A device and control method for effectively controlling the welding quality of cold-formed steel

Abstract

The application discloses a device and a control method for effectively controlling welding quality of cold-bending section steel, and relates to the technical field of cold-bending section steel welding. In order to control the welding quality, the device comprises a conveying mechanism and a control module, and is sequentially provided with an edge bending mechanism, a side surface bending mechanism, a side surface shaping mechanism, a welding assembly, a top shaping mechanism and a detection mechanism along the conveying direction of the conveying mechanism. The detection mechanism comprises a third mounting frame, and a vertical hydraulic cylinder is mounted on the top of the third mounting frame. The method comprises the following steps: placing a steel plate on a conveying roller; and controlling the driving assembly to work. According to the application, the detection mechanism is arranged, and before welding processing, the detection wheel rolls on the top of the steel plate based on the conveying of the conveying mechanism. When the top of the steel plate is uneven, the wheel frame moves upward, the top end of the scale line presses the first pressure sensor assembly, and when the control module senses that the value is greater than a critical value, the control module controls all mechanisms to stop working, so that defective products are prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cold-bending steel welding, and particularly relates to a device and a control method for effectively controlling cold-bending steel welding quality. BACKGROUND

[0002] In the process of preparing a steel pipe by welding a cold-bending steel, a steel plate is bent into a square pipe structure according to certain steps, and the two sides are aligned, and then the aligned sides are processed into one body by high-frequency welding to finally form a square pipe. At present, the high-frequency heating temperature is a key factor for controlling the welding quality during cold-bending welding. The existing heating and welding method has no feedback, and the heating power is controlled by manual experience and the finished product after welding, which is an open-loop control method with great control difficulty. When problems are found, many defective products are produced. At the same time of high-frequency welding, the yield strength of the steel is also greatly affected.

[0003] According to the search, a double-station square pipe automatic welding device is disclosed in Chinese patent application No. CN201521111340.8, which comprises a rack composed of a base and a column in a T-shaped structure. An upper welding mechanism and a cutting mechanism are arranged on the column, and a lower welding mechanism, a first clamping mechanism and a second clamping mechanism are arranged on the base. The first clamping mechanism and the second clamping mechanism are respectively used for clamping and conveying a first square pipe and a second square pipe, the cutting mechanism is used for process chamfer cutting of the square pipe, and the upper welding mechanism and the lower welding mechanism are simultaneously used for welding between the first square pipe and the second square pipe. The welding device in the above-mentioned patent has the following disadvantages: the high-frequency heating temperature needs to be controlled during welding, the welding device has no feedback during welding, and the control difficulty is great. When problems are found, many defective products are produced. SUMMARY

[0004] The present application aims to solve the problems in the prior art and provides a device and a control method for effectively controlling cold-bending steel welding quality.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] A device for effectively controlling cold-bending steel welding quality comprises a conveying mechanism and a control module, and a side bending mechanism, a side bending mechanism, a side shaping mechanism, a welding assembly, a top shaping mechanism and a detection mechanism are sequentially arranged along the conveying direction of the conveying mechanism. The welding assembly is a high-frequency welding machine for high-frequency heating of the edges of the steel plate at the welding position.

[0007] The detection mechanism comprises:

[0008] The third mounting frame is provided with a vertical hydraulic cylinder at the top, and an upper pressing frame is fixed to the output end of the vertical hydraulic cylinder;

[0009] The infrared temperature measurement probe is arranged on the outer wall at the bottom of the upper pressing frame, and the position of the infrared temperature measurement probe is matched with the welding assembly;

[0010] The wheel frame is slidably connected to the inner wall of the upper pressing frame, and the same spring is fixed between the wheel frame and the upper pressing frame;

[0011] The detection wheel is rotatably mounted on the wheel frame;

[0012] The pressure top rod is mounted on the inner wall of one side of the wheel frame;

[0013] The first pressure sensor assembly is mounted at the bottom of the upper pressing frame, and the position of the first pressure sensor assembly is matched with the position of the top end of the pressure top rod;

[0014] The control module is electrically connected with the infrared temperature measurement probe and the first pressure sensor assembly.

[0015] Preferably, the conveying mechanism comprises:

[0016] The machining table is rotatably mounted with a plurality of conveying rollers on the inner walls on both sides thereof through shafts;

[0017] The chain wheels are mounted at one end of the shafts of the conveying rollers, and the chain wheels are connected through a chain transmission;

[0018] The driving assembly is used for driving the conveying rollers to rotate.

[0019] Further, the edge bending mechanism comprises:

[0020] The first lifting hydraulic cylinders are symmetrically arranged below the two sides of the steel plate to be machined;

[0021] The first lifting frame is mounted on the output end of the first lifting hydraulic cylinder;

[0022] The first inclined roller is in a circular truncated cone structure and is rotatably mounted on the first lifting frame;

[0023] The first mounting frame is rotatably mounted with a first upper pressing roller at the lower middle part thereof, and the first upper pressing roller is located above the steel plate.

[0024] Further preferably, the side bending mechanism comprises:

[0025] The second lifting hydraulic cylinders are symmetrically arranged below the two sides of the steel plate to be machined;

[0026] The second jacking frame is installed at the output end of the second jacking hydraulic cylinder.

[0027] The second inclined roller is in a circular truncated cone structure and is rotatably installed on the second jacking frame.

[0028] The second mounting frame is provided with a pressing block below the middle part, and the pressing block is located above the steel plate.

[0029] As a preferred embodiment of the present application, the side shaping mechanism comprises a first side shaping assembly and a second side shaping assembly, the first side shaping assembly and the second side shaping assembly are identical in structure and each comprises:

[0030] The fixed frame is provided with a horizontal hydraulic cylinder on one side of the outer wall.

[0031] The side pressing frame is provided with a second pressure sensor assembly on one side, the second pressure sensor assembly is installed at the output end of the horizontal hydraulic cylinder, and the second pressure sensor assembly is electrically connected with the control module.

[0032] The side pressing roller is rotatably installed on the side pressing frame.

[0033] As a further preferred embodiment of the present application, the top shaping mechanism comprises:

[0034] The roller frame is installed on the bottom outer wall of the upper pressing frame.

[0035] The second upper pressing roller is rotatably installed on the roller frame.

[0036] The second side shaping assembly is arranged on both sides of the top shaping mechanism, and the first side shaping assembly is arranged between the second side shaping assembly and the side bending mechanism.

[0037] As a further embodiment of the present application, support assemblies are arranged at the middle positions of the edge bending mechanism, the side bending mechanism, the side shaping mechanism and directly below the top shaping mechanism, the support assemblies are used for supporting the bottom of the steel plate to prevent the bottom of the steel plate from deforming, and each of the support assemblies comprises:

[0038] The support frame is arranged directly below the steel plate.

[0039] The support roller is rollingly connected to the outer wall of the bottom of the steel plate and is rotatably installed on the support frame.

[0040] Based on the foregoing scheme, the driving assembly comprises:

[0041] The driving motor is installed on one side of the outer wall of the machining table through the motor frame.

[0042] A driving wheel is installed on the output end of the driving motor;

[0043] A driven wheel is installed on the shaft of a conveying roller, and the driving wheel and the driven wheel are drivingly connected through a transmission chain;

[0044] The device further comprises a rear shaping mechanism, which comprises:

[0045] A rear top shaping assembly;

[0046] A rear bottom shaping assembly, which has the same structure as the support assembly;

[0047] A rear side shaping assembly, which has the same structure as the first side shaping assembly and the second side shaping assembly.

[0048] Preferably, the upper pressing frame (29) is further provided with a first distance measuring probe (111) fixed through a second adjusting knob (26); the side wall of the pressure top rod is provided with a scale line, the pressure top rod is movably installed on the inner wall of one side of the wheel frame, and the inner wall of one side of the wheel frame is threadedly connected with a first adjusting knob for fixing the pressure top rod.

[0049] A control method of a device for effectively controlling the welding quality of cold-formed steel, comprising the following steps:

[0050] S1: placing a steel plate on a conveying roller;

[0051] S2: controlling the driving assembly to work to drive the conveying roller to convey the steel plate;

[0052] S3: when the steel plate is conveyed to the edge bending mechanism, the first lifting hydraulic cylinder works to bend the edges of the steel plate by using the first inclined roller, and the width of the two edge bends is one-eighth of the width of the steel plate;

[0053] S4: when the steel plate is conveyed to the side bending mechanism, the second lifting hydraulic cylinder works to bend the two sides of the steel plate by using the second inclined roller, and the width of the two side bends is one-fourth of the width of the steel plate;

[0054] S5: when the steel plate is conveyed to the first side shaping assembly, a group of horizontal hydraulic cylinders work to press and shape the two sides of the steel plate by using a group of side pressure rollers, so that the bending angle forms an 80-85° angle with the ground;

[0055] S6: before the steel plate (11) is conveyed to the top shaping mechanism, the two edges of the steel plate (11) are high-frequency heated and melted by the welding assembly;

[0056] S7: When the steel plate material (11) is conveyed to the top shaping mechanism, another set of horizontal hydraulic cylinders (18) works, and the two sides of the steel plate material (11) are pressed and limited and shaped by another set of side pressure rollers (32), and at the same time, the vertical hydraulic cylinders (13) work, and the top of the steel plate material (11) is flattened and shaped by the second upper pressure roller (21); so that the two edges of the steel plate material (11) are combined together to form a square steel pipe.

[0057] The beneficial effects of the present application are:

[0058] 1. The present application can make the detection wheel roll on the top of the steel plate material based on the conveying of the conveying mechanism before welding processing, and when the top of the steel plate material is uneven, the wheel frame will move upwards, so that the top end of the scale line presses the first pressure sensor assembly, and when the control module senses that the value of the first pressure sensor assembly is greater than the critical value, the control of each mechanism is suspended, so as to prevent the generation of defective products; in addition, the temperature after welding can be monitored in real time through the structure of the infrared temperature measurement probe, so that the welding quality is more easily controlled, and the practicability is improved.

[0059] 2. The present application can make the two ends of the steel plate material be lifted upwards by the first inclined roller based on the lifting of the first lifting hydraulic cylinder through the setting of the edge bending mechanism, and since the middle part of the steel plate material is pressed by the first upper pressure roller, the two edges of the steel plate material can be bent to meet the processing requirements.

[0060] 3. The present application can make the two edges of the steel plate material be lifted upwards by the second inclined roller based on the lifting of the second lifting hydraulic cylinder through the setting of the side bending mechanism, and since the middle part of the steel plate material is pressed by the pressing block, the two edges of the steel plate material can be bent to meet the processing requirements.

[0061] 4. The present application can extrude and shape the side of the steel plate material to meet the processing requirements through the setting of the side shaping mechanism; the top of the bent steel plate material can be flattened through the setting of the second upper pressure roller, so that the two edges of the steel plate material are aligned, the whole steel plate material is bent to form a square steel pipe structure, and the processing requirements are met. BRIEF DESCRIPTION OF DRAWINGS

[0062] Figure 1 It is a structure schematic view of the whole device for effectively controlling the welding quality of the cold-formed steel put forward by the present application;

[0063] Figure 2 It is a structure schematic view of another angle of the device for effectively controlling the welding quality of the cold-formed steel after removing the post-shaping mechanism put forward by the present application;

[0064] Figure 3 It is a structure schematic view of the welding mechanism of the device for effectively controlling the welding quality of the cold-formed steel put forward by the present application;

[0065] Figure 4 A structure schematic view of a top shaping mechanism of a device for effectively controlling the welding quality of cold-formed steel;

[0066] Figure 5 A structure schematic view of a side shaping mechanism of a device for effectively controlling the welding quality of cold-formed steel;

[0067] Figure 6 A structure schematic view of a side bending mechanism of a device for effectively controlling the welding quality of cold-formed steel;

[0068] Figure 7 A structure schematic view of a side bending mechanism of a device for effectively controlling the welding quality of cold-formed steel;

[0069] Figure 8 A structure schematic view of a rear shaping mechanism of a device for effectively controlling the welding quality of cold-formed steel;

[0070] Figure 9 A structure schematic view of a multi-range probe detection of a device for effectively controlling the welding quality of cold-formed steel.

[0071] In the figure: 1 processing table, 2 first mounting frame, 3 second mounting frame, 4 fixed frame, 5 first side shaping assembly, 6 second side shaping assembly, 7 chain wheel, 8 sprocket chain, 9 conveying roller, 10 driving motor, 11 steel plate, 12 third mounting frame, 13 vertical hydraulic cylinder, 14 first upper pressing roller, 15 first inclined roller, 16 welding assembly, 17 second pressure sensor assembly, 18 horizontal hydraulic cylinder, 19 side pressing frame, 20 detection wheel, 21 second upper pressing roller, 22 first pressure sensor assembly, 23 pressure ejector rod, 24 scale line, 25 first adjusting knob, 26 second adjusting knob, 27 wheel frame, 28 spring, 29 upper pressing frame, 30 support frame, 31 supporting roller, 32 side pressing roller, 33 second inclined roller, 34 second jacking hydraulic cylinder, 35 second jacking frame, 36 first jacking frame, 37 first jacking hydraulic cylinder, 38 infrared temperature measurement probe, 39 rear top shaping assembly, 40 rear side shaping assembly, 41 rear bottom shaping assembly, 111 first distance measuring probe, 112 second distance measuring probe, 113 third distance measuring probe, 114 first upper pressing wheel, 115 second upper pressing wheel. DETAILED DESCRIPTION

[0072] The technical solutions of the patent will be further described in detail in combination with specific embodiments.

[0073] Embodiments of the present patent are described below in detail, examples of which are shown in the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, for the purpose of explanation, and are not to be understood as a limitation of the present patent.

[0074] Embodiment 1:

[0075] An effective device for controlling the welding quality of cold-formed steel, as shown in Figures 1-7 , comprising a conveying mechanism and a control module, a side bending mechanism, a side bending mechanism, a side shaping mechanism, a welding assembly, a top shaping mechanism, and a detection mechanism are sequentially arranged along the conveying direction of the conveying mechanism, and the welding assembly 16 is a high-frequency welding machine;

[0076] The detection mechanism comprises a third mounting frame 12, a vertical hydraulic cylinder 13 is mounted on the top of the third mounting frame 12, and an upper pressing frame 29 is fixed to the output end of the vertical hydraulic cylinder 13; an infrared temperature measurement probe 38 is arranged on the outer wall at the bottom of the upper pressing frame 29, and the position of the infrared temperature measurement probe 38 is matched with the welding assembly 16; a wheel frame 27 is slidably connected to the inner wall of the upper pressing frame 29 at the top end, and a spring 28 is fixed between the wheel frame 27 and the upper pressing frame 29; a detection wheel 20 is rotatably mounted on the wheel frame 27; a pressure top rod 23 is mounted on the inner wall of one side of the wheel frame 27; and a first pressure sensor assembly 22 is mounted on the bottom of the upper pressing frame 29, and the position of the first pressure sensor assembly 22 is matched with the position of the top end of the pressure top rod 23.

[0077] The control module is electrically connected with the infrared temperature measurement probe 38 and the first pressure sensor assembly 22.

[0078] By setting the detection mechanism, the detection wheel 20 can roll on the top of the steel plate 11 based on the conveying of the conveying mechanism before high-frequency welding processing. The detection wheel is arranged in a structure with a middle avoiding ring groove to avoid extruding the uncooled burr generated during welding. When the two top surfaces of the steel plate 11 are uneven and have an up-down difference for the standard height, the wheel frame 27 will move upwards, so that the top end of the scale line 24 extrudes the first pressure sensor assembly 22. When the control module senses that the value of the first pressure sensor assembly 22 is greater than the critical value, the control module controls each mechanism to pause operation to prevent the generation of defective products.

[0079] In addition, since the monitoring of the heating temperature in the high-frequency welding process cannot guarantee the quality after the subsequent extrusion welding, by setting the infrared temperature measurement probe 38 and the like, the temperature of the rough part after welding can be monitored in real time. Through standard process parameters, a reasonable temperature interval range of the welded part can be calculated at a certain point position after high-frequency welding. After the temperature is collected by the infrared temperature measurement probe, it is compared with the set temperature interval. When the collected temperature is greater than the temperature interval, the welding assembly reduces the heating power. When the collected temperature is less than the temperature interval, the welding assembly increases the heating power, so as to easily control the high-frequency welding quality and improve the practicality and product quality. Since burrs are generated during high-frequency welding, the identification of the burrs also helps to improve the preparation quality. Therefore, a first distance measurement probe 111 is also arranged on the side of the infrared temperature measurement probe. The first distance measurement probe measures the height of the burr. Under the same parameter process, the qualified burr height is relatively constant. When the burr height measured by the first distance measurement probe is low and the burr temperature is too high, it is judged that overburning occurs. The extruded metal burr is in the form of a sheet covering the deformed metal burr, and the burr as a whole is flat, so the height will be reduced. When the height of the burr continues to decrease and the burr temperature measured by the infrared temperature measurement probe is too high, the welding assembly reduces the heating power, further improving the accuracy of the judgment. When the burr height measured by the first distance measurement probe is high and the burr temperature is too high or too low, it is judged that cold welding occurs. According to the judgment, the welding power is adjusted to improve the accuracy of the judgment of the infrared temperature measurement probe.

[0080] In order to facilitate the conveying of the steel plate 11; as Figure 1 、 Figure 2 shown, the conveying mechanism comprises:

[0081] The machining table 1 is provided with a plurality of conveying rollers 9 rotatably installed on the inner walls on both sides of the machining table 1 through shafts;

[0082] The chain wheels 7 are installed at one end of the shafts of the conveying rollers 9, and each chain wheel 7 is drivingly connected through the sprocket chain 8;

[0083] The driving assembly is used to drive the conveying rollers 9 to rotate.

[0084] In order to facilitate the bending of the edge portion of the steel plate 11 first; as Figure 7 shown, the edge portion bending mechanism comprises:

[0085] The first lifting hydraulic cylinders 37 are symmetrically arranged below the two sides of the steel plate 11 to be machined;

[0086] The first lifting frame 36 is installed on the output end of the first lifting hydraulic cylinder 37;

[0087] The first inclined roller 15 has a frustum-shaped structure and is rotatably mounted on the first lifting frame 36.

[0088] The first mounting frame 2 has a first upper pressure roller 14 rotatably mounted on the lower middle part of the first mounting frame 2, and the first upper pressure roller 14 is located above the steel plate 11;

[0089] By setting up an edge bending mechanism, the steel plate 11 can be lifted upwards at both ends by the first inclined roller 15 based on the lifting of the first lifting hydraulic cylinder 37. Since the middle of the steel plate 11 is pressed by the first upper pressure roller 14, the steel plate 11 can be bent on both sides to meet the processing requirements.

[0090] To facilitate bending of the steel plate 11, forming the side of the square steel tube; such as Figure 6 As shown, the side bending mechanism includes:

[0091] The second lifting hydraulic cylinder 34 is symmetrically arranged on both sides below the steel plate 11 to be processed.

[0092] The second lifting frame 35 is installed at the output end of the second lifting hydraulic cylinder 34;

[0093] The second inclined roller 33 has a frustum-shaped structure and is rotatably mounted on the second lifting frame 35.

[0094] The second mounting bracket 3 has a pressure block located at the lower center of the second mounting bracket 3, and the pressure block is located above the steel plate 11.

[0095] By setting up a side bending mechanism, the steel plate 11 can be lifted upwards on both sides by the second inclined roller 33 based on the lifting of the second lifting hydraulic cylinder 34. Since the middle of the steel plate 11 is pressed by the pressure block, the steel plate 11 can be bent on both sides to meet the processing requirements.

[0096] To facilitate shaping of the side profile; such as Figure 5 As shown, the side shaping mechanism includes a first side shaping component 5 and a second side shaping component 6. The first side shaping component 5 and the second side shaping component 6 have the same structure and both include:

[0097] The fixing frame 4 has a horizontal hydraulic cylinder 18 fixed on one outer wall;

[0098] A side pressure frame 19 is provided, and a second pressure sensor assembly 17 is installed on one side of the side pressure frame 19. The second pressure sensor assembly 17 is installed at the output end of the horizontal hydraulic cylinder 18 and is electrically connected to the control module.

[0099] Side pressure roller 32 is rotatably mounted on side pressure frame 19;

[0100] By setting the side shaping mechanism, the side of the steel plate 11 can be extruded and shaped to meet the processing requirements.

[0101] In order to facilitate the flattening and alignment of the edge of the bent steel plate 11, as shown in the drawings, the top shaping mechanism comprises: Figure 4

[0102] The roller frame is installed on the bottom outer wall of the upper pressing frame 29.

[0103] The second upper pressing roller 21 is rotatably installed on the roller frame.

[0104] The second side shaping assembly 6 is arranged on both sides of the top shaping mechanism, and the first side shaping assembly 5 is arranged between the second side shaping assembly 6 and the side bending mechanism.

[0105] By setting the second upper pressing roller 21 and other structures, the top of the bent steel plate 11 can be flattened, and the two edges of the steel plate 11 are aligned, and the entire steel plate 11 is bent to form a square steel pipe structure, meeting the processing requirements.

[0106] In order to facilitate reliable support of the bottom of the steel plate 11, as shown in the drawings, support assemblies are arranged at the middle positions of the edge bending mechanism, the side bending mechanism, the side shaping mechanism and directly below the top shaping mechanism. Figures 1-7 The support assembly comprises:

[0107] The support frame 30 is arranged directly below the steel plate 11.

[0108] The support roller 31 is rollingly connected to the bottom outer wall of the steel plate 11, and the support roller 31 is rotatably installed on the support frame 30.

[0109] Figure 2 In order to facilitate the rotation of the conveying roller 9, as shown in the drawings, the driving assembly comprises:

[0110] The driving motor 10 is installed on one side of the outer wall of the processing table 1 through the motor frame.

[0111] The driving wheel is installed on the output end of the driving motor 10.

[0112] The driven wheel is installed on the shaft of one conveying roller 9, and the driving wheel and the driven wheel are drivingly connected through the transmission chain.

[0113] The device further comprises a rear shaping mechanism, and the rear shaping mechanism comprises:

[0114] ​​rear top shaping assembly 39;

[0115] rear bottom shaping assembly 41, the rear bottom shaping assembly 41 is the same structure as the support assembly;

[0116] rear side shaping assembly 40, the rear side shaping assembly 40 is the same structure as the first side shaping assembly 5 and the second side shaping assembly 6.

[0117] Embodiment 2:

[0118] An effective device for controlling the welding quality of cold-formed steel, as shown in Figures 1-4 In order to facilitate adjustment, the following improvements are made on the basis of embodiment 1: the side wall of the pressure ejector rod 23 is provided with a scale line 24, the pressure ejector rod 23 is movably installed on the inner wall of one side of the wheel frame 27, and the inner wall of one side of the wheel frame 27 is connected with a first adjusting knob 25 for fixing the pressure ejector rod 23 through threads;

[0119] By setting the first adjusting knob 25, the position of the pressure ejector rod 23 can be easily adjusted, so as to adjust the welding position and the detection triggering position, and the practicability is improved.

[0120] Embodiment 3:

[0121] The application further discloses a control method of the device for effectively controlling the welding quality of cold-formed steel, the steel plate 11 is first placed on the conveying roller 9; then the driving assembly is controlled to work to drive the conveying roller 9 to convey the steel plate 11; when the steel plate 11 is conveyed to the edge bending mechanism, the first lifting hydraulic cylinder 37 works to bend the edge of the steel plate 11 by the first inclined roller 15, and the width of the two edges is one eighth of the width of the steel plate 11, so as to form the top surface of the square steel pipe; when the steel plate 11 is conveyed to the side bending mechanism, the second lifting hydraulic cylinder 34 works to bend the two sides of the steel plate 11 by the second inclined roller 33, and the width of the two sides is one fourth of the width of the steel plate 11, so as to form the two sides of the square steel pipe; when the steel plate 11 is conveyed to the first side shaping assembly 5, a group of horizontal hydraulic cylinders 18 work to press and shape the two sides of the steel plate 11 by a group of side pressure rollers 32, so that the bent side edge of the steel plate 11 forms an 85° angle with the bottom surface;

[0122] Before the steel plate 11 is conveyed to the top shaping mechanism, the two side edges of the top of the steel plate are heated by the welding assembly, and when the steel plate 11 is conveyed to the top shaping mechanism, the other group of horizontal hydraulic cylinders 18 works to limit and shape the two sides of the steel plate 11 by using the other group of side pressing rollers 32 to press the two sides of the steel plate 11, at this time, the side edges of the steel plate 11 are at a 90° angle with the bottom surface, and by working of the vertical hydraulic cylinder 13, the second upper pressing roller 21 is used to flatten and shape the top of the steel plate 11, at this time, the flattening part of the second upper pressing roller 21 is the two eighth-width bending parts in the S3 step, as the steel plate 11 is conveyed, the detection wheel 20 rolls in contact with the top surface of the steel plate 11, and detects whether the height of the top surface of the welded section steel is flat, when the welded part has a misalignment problem, the two edges of the steel plate 11 are not on the qualified horizontal plane, so that the detection wheel is lifted and moved to a position, and detection triggering is realized; the circumferential middle part of the detection wheel is provided with a avoiding ring for avoiding burrs, when the welding has a quality problem and the burrs arch up to the two sides with a large size, the detection wheel can also trigger.

[0123] Finally, the welded section steel is pressed and corrected once by the rear shaping mechanism, and the effect of high-precision preparation is achieved.

[0124] Referring to Figure 9As shown, in order to further improve the preparation accuracy and effective control ability, in an embodiment, the number of the second upper pressing rollers is designed as two, which are the first upper pressing roller 114 and the second upper pressing roller 115, and the first upper pressing roller and the second upper pressing roller are respectively used for pressing the two top surfaces of the steel plate for welding. The first upper pressing roller and the second upper pressing roller respectively have independent pressing power mechanisms, and the pressing power mechanisms are provided with pressure sensors. The second distance measuring probe and the third distance measuring probe are also arranged on the surface of the upper pressing frame. The second distance measuring probe is located on the same side as the first upper pressing roller, and the third distance measuring probe is located on the same side as the second upper pressing roller. The second distance measuring probe and the third distance measuring probe are respectively arranged on both sides of the first distance measuring probe, and are used for measuring the two top surfaces of the steel plate for welding. When the detection wheel is triggered, if the distance measured by the second distance measuring probe and the third distance measuring probe is within the qualified range, it indicates that the surface is burr, which causes the detection wheel to be triggered. When the detection wheel is triggered, if the distance measured by the second distance measuring probe and / or the third distance measuring probe is not within the qualified range, it indicates that there is a problem of upward bending in the two top surfaces of the steel plate for welding. The corresponding first upper pressing roller and second upper pressing roller need to calculate the moving distance for correction according to the distance. The wheels within the qualified range are not adjusted, and the wheels not within the qualified range are adjusted. The power required for the pressing power mechanism to move is calculated according to the distance to be moved, and the pressing power mechanism is controlled to move; when the detection wheel is not triggered, and the second distance measuring probe or the third distance measuring probe is triggered, it indicates that there is a qualified surface in the two top surfaces of the steel plate for welding, and the other surface is downward bent, so the detection wheel cannot be triggered. According to the distance measured by the second distance measuring probe and the third distance measuring probe, the corresponding wheel of the probe not within the qualified range is identified, and the power required for the pressing power mechanism to move is calculated according to the distance to be moved, and the pressing power mechanism is controlled to move; thereby the welding quality can be quickly and automatically fed back and corrected, and the generation of defective products is greatly reduced.

[0125] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can make equivalent replacements or changes to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A device for effectively controlling the welding quality of cold-formed steel, characterized by, The device comprises a conveying mechanism and a control module, and is sequentially provided with an edge bending mechanism, a side bending mechanism, a side shaping mechanism, a welding assembly, a top shaping mechanism and a detection mechanism along the conveying direction of the conveying mechanism. The detection mechanism comprises: A third mounting frame (12) is provided on the top of which a vertical hydraulic cylinder (13) is mounted, and an upper pressing frame (29) is fixed to the output end of the vertical hydraulic cylinder (13); An infrared temperature measurement probe (38) is arranged on the bottom outer wall of the upper pressing frame (29), and the position of the infrared temperature measurement probe (38) is matched with the welding assembly (16); A wheel frame (27) is slidingly connected to the inner wall of the upper pressing frame (29) at the top end, and a same spring (28) is fixed between the wheel frame (27) and the upper pressing frame (29); A detection wheel (20) is rotatably mounted on the wheel frame (27); A pressure top rod (23) is mounted on the inner wall of one side of the wheel frame (27); A first pressure sensor assembly (22) is mounted on the bottom of the upper pressing frame (29), and the position of the first pressure sensor assembly (22) is matched with the position of the top end of the pressure top rod (23); The control module is electrically connected with the infrared temperature measurement probe (38) and the first pressure sensor assembly (22); The welding assembly (16) is a high-frequency welding machine; The top shaping mechanism comprises: A roller frame is mounted on the bottom outer wall of the upper pressing frame (29); A second upper pressing roller (21) is rotatably mounted on the roller frame; The second upper pressing roller (21) is 2, which is the first upper pressing wheel (114) and the second upper pressing wheel (115), the first upper pressing wheel (114) and the second upper pressing wheel (115) are used for pressing the two top surfaces of the steel plate for welding, the first upper pressing wheel (114) and the second upper pressing wheel (115) have independent pressing power mechanisms, the pressing power mechanisms are provided with pressure sensors, and the second distance measuring probe (112) and the third distance measuring probe (113) are arranged on the surface of the upper pressing frame, the second distance measuring probe (112) and the third distance measuring probe (113) are arranged on the same side of the first upper pressing wheel (114) and the second upper pressing wheel (115), and are used for measuring the two top surfaces of the steel plate for welding, when the detection wheel is triggered, the distance measured by the second distance measuring probe (112) and the third distance measuring probe (113) is within the qualified range, the surface is burr, and the detection wheel is triggered; when the detection wheel is triggered, the distance measured by the second distance measuring probe (112) and / or the third distance measuring probe (113) is not within the qualified range, the two top surfaces of the steel plate for welding exist the problem of upwarping, and the corresponding first upper pressing wheel (114) and the second upper pressing wheel (115) need to calculate the moving distance required for correction according to the distance; the wheels within the qualified range are not adjusted, the wheels not within the qualified range are adjusted, the power required for the pressing power mechanism to move is calculated according to the distance required to move, and the pressing power mechanism is controlled to move; when the detection wheel is not triggered, and the second distance measuring probe (112) or the third distance measuring probe (113) is triggered, it is indicated that one of the two top surfaces of the steel plate for welding is qualified, and the other surface is downwarping, so that the detection wheel cannot be triggered; according to the distance measured by the second distance measuring probe (112) and the third distance measuring probe (113), the wheel corresponding to the probe not within the qualified range is identified, the power required for the pressing power mechanism to move is calculated according to the distance required to move, and the pressing power mechanism is controlled to move.

2. A device for effectively controlling the welding quality of cold-rolled steel according to claim 1, characterized in that, The conveying mechanism comprises: A machining table (1), a plurality of conveying rollers (9) are rotatably installed on the inner walls of both sides of the machining table (1) through shafts; Chain wheels (7), each chain wheel (7) is installed at one end of the shaft of a conveying roller (9), and each chain wheel (7) is drivingly connected through a sprocket chain (8); A driving assembly, the driving assembly is used for driving the conveying rollers (9) to rotate.

3. A device for effectively controlling the welding quality of cold-rolled steel according to claim 2, characterized in that, The edge bending mechanism comprises: Two first jacking hydraulic cylinders (37) are symmetrically arranged below the two sides of the steel plate (11) to be machined; A first jacking frame (36) is installed on the output end of the first jacking hydraulic cylinder (37); A first inclined roller (15) is in a circular truncated cone structure, and is rotatably installed on the first jacking frame (36); A first mounting frame (2) rotatably has a first upper pressing roller (14) installed below the middle part of the first mounting frame (2), and the first upper pressing roller (14) is located above the steel plate (11).

4. The device for effectively controlling the welding quality of cold-rolled steel according to claim 3, characterized in that, The side bending mechanism comprises: Second jacking hydraulic cylinders (34), two second jacking hydraulic cylinders (34) are symmetrically arranged below the two sides of the steel plate material (11) to be processed; Second jacking frames (35), the second jacking frames (35) are installed on the output ends of the second jacking hydraulic cylinders (34); Second inclined rollers (33), the second inclined rollers (33) are in a circular truncated cone structure, and are rotatably installed on the second jacking frames (35); Second mounting frames (3), the second mounting frames (3) are provided with pressing blocks below the middle portions thereof, and the pressing blocks are located above the steel plate material (11).

5. A device for effectively controlling the welding quality of cold-rolled steel according to claim 4, characterized in that, The side shaping mechanism comprises first side shaping assemblies (5) and second side shaping assemblies (6), the first side shaping assemblies (5) and the second side shaping assemblies (6) are the same in structure and each comprises: A fixed frame (4) is provided with a horizontal hydraulic cylinder (18) on one side of the outer wall thereof; A side pressing frame (19) is provided with a second pressure sensor assembly (17) on one side thereof, the second pressure sensor assembly (17) is installed on the output end of the horizontal hydraulic cylinder (18), and the second pressure sensor assembly (17) is electrically connected with the control module; A side pressing roller (32) is rotatably installed on the side pressing frame (19).

6. The device for effectively controlling the welding quality of cold-formed steel according to claim 5, characterized in that, The second side shaping assemblies (6) are arranged on the two sides of the top shaping mechanism, and the first side shaping assemblies (5) are arranged between the second side shaping assemblies (6) and the side bending mechanism.

7. A device for effectively controlling the welding quality of cold-rolled steel according to claim 6, characterized in that, Support assemblies are arranged below the top shaping mechanism, in the middle positions of the side bending mechanism, the side shaping mechanism and the edge bending mechanism, and are used for supporting the bottom of the steel plate material (11) to prevent the bottom of the steel plate material (11) from being deformed, and each of the support assemblies comprises: A support frame (30) is arranged below the steel plate material (11); A support roller (31) is rollingly connected to the outer wall of the bottom of the steel plate material (11) and is rotatably installed on the support frame (30).

8. A device for effectively controlling the welding quality of cold-rolled steel according to claim 7, characterized in that, The driving assembly comprises: A driving motor (10) is installed on one side of the outer wall of the processing table (1) through a motor frame; A driving wheel is installed on the output end of the driving motor (10); A driven wheel is installed on the shaft of one conveying roller (9), and the driving wheel and the driven wheel are drivingly connected through a transmission chain. The device further comprises a rear shaping mechanism, and the rear shaping mechanism comprises: A rear top shaping assembly (39); A rear bottom shaping assembly (41) which is the same in structure as the support assembly; A rear side shaping assembly (40) which is the same in structure as the first side shaping assembly (5) and the second side shaping assembly (6).

9. The device for effectively controlling the welding quality of cold-rolled steel according to claim 8, characterized in that, The upper pressing frame (29) is further provided with a first distance measuring probe (111) fixed by a second adjusting knob (26); the side wall of the pressure jacking rod (23) is provided with a scale line (24), the pressure jacking rod (23) is movably installed on the inner wall of one side of a wheel frame (27), and the inner wall of one side of the wheel frame (27) is threadedly connected with a first adjusting knob (25) for fixing the pressure jacking rod (23).

10. A control method of the device for effectively controlling the welding quality of cold-rolled steel according to claim 9, characterized in that, The method comprises the following steps: S1: Place the steel plate (11) on the conveying roller (9); S2: Control the driving assembly to work to drive the conveying roller (9) to convey the steel plate (11); S3: When the steel plate (11) is conveyed to the edge bending mechanism, the first jacking hydraulic cylinder (37) works to bend the edge of the steel plate (11) by the first inclined roller (15), and the width of the two edge bends is one eighth of the width of the steel plate (11); S4: When the steel plate (11) is conveyed to the side bending mechanism, the second jacking hydraulic cylinder (34) works to bend the two sides of the steel plate (11) by the second inclined roller (33), and the width of the two side bends is one fourth of the width of the steel plate (11); S5: When the steel plate (11) is conveyed to the first side shaping assembly (5), a group of horizontal hydraulic cylinders (18) work to press and shape the two sides of the steel plate (11) by a group of side pressure rollers (32), so that the bending angle of the steel plate (11) and the bottom surface form an included angle of 80-85°; S6: Before the steel plate (11) is conveyed to the top shaping mechanism, the two edges of the steel plate (11) are high-frequency heated and melted by the welding assembly; S7: When the steel plate (11) is conveyed to the top shaping mechanism, another group of horizontal hydraulic cylinders (18) work to press and limit the two sides of the steel plate (11) by another group of side pressure rollers (32), and a vertical hydraulic cylinder (13) works to press and flatten the top of the steel plate (11) by a second upper pressing roller (21); so that the melted parts of the two edges of the steel plate (11) are combined together to form a square steel pipe.

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