A rolling reinforcement weld control system for welding steel strips and a method thereof

Abstract

The application discloses a kind of roll strengthening weld joint control systems for welding strip steel, including upper and lower roll wheel assemblies, upper roll lifting mechanism, upper roll lifting mechanism includes frame, double-out bar roll lifting cylinder, guide rod, roll gap automatic adjusting mechanism, including screw cap and be arranged in the inner hole of screw cap, be arranged in adjusting motor, transmission gear, adjustment position detection encoder, detection gear, the inner hole lower section of screw cap has internal thread, upper section has internal thread, the upper piston rod of double-out bar roll lifting cylinder has outer thread and is screw thread matched with screw cap, adjusting motor output end is engaged with the internal thread of screw cap by transmission gear, adjustment position detection encoder is engaged with the internal thread of screw cap by detection gear.Rolling gap can be automatically adjusted by the application to ensure the rolling effect of weld joints with different thicknesses.

Description

TECHNICAL FIELD

[0001] The present application relates to the welding seam rolling technology, and in particular to a rolling reinforcement welding seam control system for welded steel strips and a method thereof. BACKGROUND

[0002] A high-power laser welder is used in a cold-rolling and pickling mill train welder. The laser welder focuses laser to melt the steel plate to form a welding seam, that is, the tail of the front coil and the head of the rear coil of the strip produced by the mill train are welded to realize the full continuous production of the mill train. In order to improve the quality of the laser welding seam, the welding seam after welding needs to be rolled and reinforced. At present, the welding seam reinforcement rolling device is driven by a pneumatic cylinder. Since the rolling gap cannot be automatically adjusted, the rolling effect of different thickness welding seams is not ideal. The thin welding seam is not effectively rolled, and the thick welding seam is excessively rolled, which causes damage to the welding seam. In addition, the high-strength welding seam cannot be effectively rolled due to the limitation of system pressure, which seriously affects the rolling reinforcement effect of the laser welding seam and greatly affects the reliability of the welding production.

[0003] A welding seam rolling machine with the patent application number 202110087331.3 includes a machine table and a positioning support mechanism, a mandrel and a rolling mechanism installed on the machine table. The mandrel passes through the positioning support mechanism, and the rolling mechanism is located above the mandrel. The positioning support mechanism and the rolling mechanism are movably installed on the machine table. The moving direction of the positioning support mechanism is parallel to the length direction of the mandrel. The rolling mechanism is movable in the first direction and the second direction perpendicular to each other. The first direction is parallel to the length direction of the mandrel. The to-be-processed cylinder is supported on the mandrel after being sleeved on the mandrel, and one end surface of the cylinder abuts against the positioning support mechanism. The rolling mechanism moves in the second direction to press the welding seam of the cylinder on the mandrel, and simultaneously moves in the first direction to roll the welding seam. The rolling mechanism does not have the automatic adjustment technology of the rolling gap, and cannot solve the above problems.

[0004] A pipe welding seam rolling machine with the patent application number 201821310101.9 includes a machine frame, a horizontal support shaft, a rolling wheel and a driving mechanism. One end of the horizontal support shaft is fixed on the machine frame, and the other end is a free end. The rolling wheel is arranged above the horizontal support shaft. The driving mechanism is used to drive the rolling wheel to lift and horizontally reciprocate. Both ends of the pipe welding seam are provided with outwardly extending welding lug portions. The top surface of the horizontal support shaft is provided with a rolling plate. The rolling plate is provided with a limiting component corresponding to the welding lug portions. The limiting component includes at least two elastic lifting columns arranged on both sides of the welding lug portions. The patent technology mainly facilitates the positioning of the pipe to improve the stability of the welding seam rolling. However, it also does not have the automatic adjustment technology of the rolling gap, and cannot control the rolling force by rolling locking. SUMMARY

[0005] In order to solve the above problems of the prior art, the present application provides a rolling reinforcement weld control system for welding strip steel and a method thereof, which can automatically adjust the rolling gap to ensure the rolling effect of the welds of different thicknesses.

[0006] In one aspect, a rolling reinforcement weld control system for welding strip steel, comprising upper and lower rolling wheel assemblies, an upper rolling lifting mechanism, the upper rolling lifting mechanism comprising a frame, a double-rod rolling lifting cylinder arranged on the frame, a guide rod connecting the lower piston rod of the double-rod rolling lifting cylinder and the lower rolling wheel assembly, characterized in that it further comprises a rolling gap automatic adjusting mechanism arranged on the frame, comprising a screw cap and a adjusting motor, a transmission gear, an adjusting position detection encoder, a detection gear arranged in the inner hole of the screw cap, the lower section of the inner hole of the screw cap has internal threads, the upper section has internal teeth, the upper piston rod of the double-rod rolling lifting cylinder has external threads and is threadedly matched with the screw cap, the output end of the adjusting motor is meshed with the internal teeth of the screw cap through the transmission gear, and the adjusting position detection encoder is meshed with the internal teeth of the screw cap through the detection gear.

[0007] Further comprising a rolling locking mechanism arranged on the frame, comprising a pair of support plates, a pair of locking cylinders arranged on the support plates, a pair of rolling locking blocks arranged on the piston rods of the locking cylinders, a support clamping block located below the screw cap and sleeved on the upper piston rod of the double-rod rolling lifting cylinder, the support clamping block is provided with transverse guide holes at both ends, the opposite ends of the two rolling locking blocks are provided with semicircular concave arc clamping heads matched with the outer wall of the upper piston rod, and the upper piston rod is clamped by the rolling locking blocks through the locking cylinders and the same side guide holes.

[0008] The upper surfaces of both ends of the support clamping block are further respectively provided with a locking detection transmitting probe and a locking detection receiving probe, which can block the signal received by the locking detection receiving probe when the screw cap descends to the support clamping block.

[0009] Further comprising a camera lifting cylinder arranged on one side of the lower rolling wheel assembly and a gap detection camera device arranged on the upper end piston rod of the cylinder.

[0010] In another aspect, a rolling reinforcement weld control method for welding strip steel, comprising the following steps:

[0011] A. According to the welding strip thickness data provided by the unit, the transmission gear of the adjusting motor drives the screw cap to rotate to adjust the limiting position of the screw cap in the axial direction of the upper piston rod of the double-rod rolling lifting cylinder, and the adjusting position detection encoder detects at the same time, and when the screw cap is adjusted to the position, the adjusting motor is controlled to stop rotating;

[0012] B. Control the lower piston rod of the double-out-rod rolling lifting cylinder to extend to make the rolling wheel assembly press down to the position where the screw cap is pressed to the supporting clamping block, drive the rolling clamping block by the locking cylinder to clamp the upper piston rod, and the locking detection receiving probe loses the receiving signal;

[0013] C. Control the gap detection camera to extend and detect the rolling gap, and compare the measured value with the set value, if it is within the normal deviation range, proceed to the next step of automatic welding, if it is beyond the deviation range, control the automatic welding step to interrupt and alarm;

[0014] D. In the welding rolling, if the locking detection receiving probe receives the signal, control the automatic welding step to interrupt and alarm.

[0015] Using the welding strip rolling reinforced weld control system and method, the following beneficial effects are obtained:

[0016] 1. The top motor drives the adjusting screw cap and the detection encoder combination, which can automatically adjust the rolling gap according to the thickness of the strip, to solve the problem that the original weld reinforcement rolling gap cannot be automatically adjusted, resulting in unsatisfactory rolling effect of different thickness welds;

[0017] 2. The pair of rolling clamping blocks of the rolling clamping mechanism can lock the adjusted rolling gap to effectively lock the rolling reinforcement gap and ensure the weld rolling effect of high-strength steel;

[0018] 3. The gap detection camera detects the actual gap;

[0019] 4. Through the locking detection transmission and reception detection, the lower piston rod of the rolling lifting cylinder can be lifted by the reaction force when abnormal conditions such as locking cylinder leakage or rolling weld thickness exceed the normal range occur. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the welding strip rolling reinforced weld control system of the present application;

[0021] Figure 2 It is a structural schematic diagram of the rolling clamping mechanism of the present application;

[0022] Figure 3 It is a structural schematic diagram of the rolling gap automatic adjustment mechanism of the present application;

[0023] Figure 4 It is a schematic diagram of the use state of the control system of the present application. DETAILED DESCRIPTION

[0024] The welding strip rolling reinforced weld control system of the present application will be further described as follows:Figures 1-4 As shown, the control system specifically comprises the upper and lower roller assemblies 1, 2, the upper roller lifting mechanism, the lower roller assembly 2 is fixedly arranged, and the upper and lower roller assemblies 1, 2 each comprises a micro-convex arc roller 11, an axle 12, and a roller axle locking plate 13 arranged at both ends. The upper roller lifting mechanism comprises a frame 3, a double-rod roller lifting cylinder 4 arranged on the frame 3, a guide rod 6 connecting the lower piston rod 5 of the double-rod roller lifting cylinder 4 and the lower roller assembly 2, and a roller gap automatic adjusting mechanism arranged on the frame 3, which is different from the prior art and comprises an adjusting motor 8, a transmission gear 9, an adjusting position detection encoder 10, a detection gear 14 arranged in the inner hole of a screw cap 7, the lower section of the inner hole of the screw cap 7 is internally threaded, and the upper section is internally toothed, the upper piston rod 18 of the double-rod roller lifting cylinder 4 is externally threaded and threadedly matched with the screw cap 7, the output end of the adjusting motor 8 is meshed with the internal tooth of the screw cap 7 through the transmission gear 9, and the adjusting position detection encoder 10 is meshed with the internal tooth of the screw cap 7 through the detection gear 14. When the adjusting motor 8 drives the transmission gear 9 to reverse, the screw cap 7 can be driven to axially ascend and descend along the upper piston rod 18 to adjust the limiting height, that is, the roller gap between the upper roller assembly 1 and the lower roller assembly 2 can be adjusted, and at the same time, the transmission of the transmission gear 9 can enable the adjusting position detection encoder 10 to detect the rotation amount of the adjusting cap.

[0025] The control system further comprises a roller locking mechanism arranged on the frame 3, which comprises a pair of support plates 15, a pair of locking cylinders 16 arranged on the support plates 15, a pair of roller locking blocks 17 arranged on the piston rods of the locking cylinders 16, a support clamping block 19 located below the screw cap 7 and sleeved on the upper piston rod 18 of the double-rod roller lifting cylinder 4, the support clamping block 19 is provided with transverse guide holes at both ends, the opposite ends of the two roller locking blocks 17 are provided with semicircular concave arc clamping heads matched with the outer wall of the upper piston rod 18, and the upper piston rod 18 is clamped by the locking cylinders 16 on the same side through the guide holes into the support clamping block 19 and driven. The support clamping block 19 is fixed on the frame 3 through a support 25 and serves as a height limit for the descent of the screw cap 7.

[0026] The upper surfaces of both ends of the support clamping block 19 are further respectively provided with a locking detection emission probe 20 and a locking detection receiving probe 21. Normally, the locking detection receiving probe 21 can receive the radiation signal emitted by the locking detection emission probe 20, and when the screw cap 7 descends to the support clamping block 19, the locking detection receiving probe 21 can block the signal reception.

[0027] The control system further comprises a camera lifting cylinder 22 arranged on one side of the lower roller assembly 2 and a gap detection camera 23 arranged on the upper end piston rod of the cylinder, the gap detection camera 23 is lifted by the camera lifting cylinder 22 to detect the rolling gap between the upper and lower roller assemblies 1 and 2 and obtain the actual gap value.

[0028] The control method of the control system for rolling and strengthening the weld of the welded strip steel is as follows:

[0029] A. According to the thickness data of the welded strip steel provided by the machine set, the driving gear 9 of the motor 8 is adjusted to drive the screw cap 7 to rotate to adjust the limiting position of the screw cap 7 in the axial direction of the upper piston rod 18 of the double-rod rolling and lifting cylinder 4, and the adjusting position detection encoder 10 is used for detection, and when the screw cap 7 is adjusted to the position, the control adjusting motor 8 is stopped rotating;

[0030] B. Before preparing for welding and rolling, the lower piston rod 5 of the double-rod rolling and lifting cylinder 4 is controlled to extend to make the roller assembly press down to the position that the screw cap 7 is pressed against the supporting clamping block 19, and then the rolling locking block 17 is clamped on the upper piston rod 18 from both sides by driving the locking cylinder 16, at this time, the locking detection receiving probe 21 is blocked by the screw cap 7 and loses the receiving signal;

[0031] C. The camera lifting cylinder 22 drives the gap detection camera 23 to extend and detect the rolling gap, and the computer 24 compares the measured value with the set value, if it is within the normal deviation range, the next automatic welding step is carried out, if it is beyond the deviation range, the automatic welding step is interrupted and an alarm is given by the computer control;

[0032] D. When the welding and rolling starts, the welding machine trolley moves to start welding, the upper and lower roller assemblies contact the weld to roll, the rolling force acts on the weld, at the same time, the reaction force pushes the rolling and lifting cylinder piston rod to rise, since the upper piston rod 18 has been clamped, the normal situation can overcome the reaction force, but when the locking cylinder 16 leaks or the rolling weld is abnormally thick, the lower piston rod 5 of the double-rod rolling and lifting cylinder 4 will be lifted by the reaction force, which will cause the upper piston rod 18 and the screw cap 7 to rise together, at this time, the locking detection receiving probe 21 receives the signal, after being amplified by the signal amplifier 27, the automatic welding step is interrupted and an alarm is given by the computer 24 control.

[0033] In summary, the rolling reinforcement weld control system for welded strip steel and the method thereof can realize real-time adjustment of the rolling gap according to the actual thickness of the welded strip, effectively lock the rolling reinforcement gap to ensure the rolling effect of the high-strength steel weld, and completely solve the problem that the original weld reinforcement rolling gap cannot be automatically adjusted, resulting in unsatisfactory rolling effect of different thickness welds, ineffective rolling of thin welds, and excessive rolling of thick welds, which leads to damage to the weld. In addition, the locking can solve the problem that the weld with high strength cannot be effectively rolled due to insufficient driving pressure of the rolling cylinder, effectively improve the quality and stability of the laser welded weld, and improve the operation reliability of the unit.

[0034] However, those skilled in the art should recognize that the above embodiments are only used to illustrate the present application, and are not used as a limitation on the present application. As long as the changes and modifications of the above described embodiments are within the spirit and principle of the present application, they will fall within the scope of the claims of the present application.

Claims

1. A kind of rolling reinforcement weld control system for welding strip steel, including upper and lower roller assembly, upper roller lifting mechanism, upper roller lifting mechanism includes frame, double-outlet rod roller lifting cylinder arranged on the frame, the guide rod of the lower piston rod of double-outlet rod roller lifting cylinder is connected with the lower roller assembly, it is characterized by: The rolling gap automatic adjusting mechanism comprises a screw cap, an adjusting motor arranged in the inner hole of the screw cap, a transmission gear, an adjusting position detection encoder, and a detection gear.

2. A roll-bonded reinforced weld control system for welding steel strip as defined in claim 1 wherein: The rolling locking mechanism comprises a pair of support plates, a pair of locking cylinders arranged on the support plates, a pair of rolling locking blocks arranged on the piston rods of the locking cylinders, and a support clamping block arranged below the screw cap and sleeved on the upper piston rod of the double-rod rolling lifting cylinder.

3. A roll-bonded reinforced weld control system for welding steel strip as defined in claim 2 wherein: The upper surfaces of the two ends of the support clamping block are respectively provided with a locking detection transmitting probe and a locking detection receiving probe.

4. A roll-bonded reinforced weld control system for welding steel strip as defined in claim 1 wherein: The gap detection camera device is arranged on the lower rolling wheel assembly.

5. A control method of a roll-bonded reinforcement weld control system for a welded steel strip as claimed in any one of claims 1 to 4, characterized in that: The method comprises the following steps: A. According to the thickness data of the welding strip provided by the machine group, the transmission gear of the adjusting motor drives the screw cap to rotate to adjust the limiting position of the screw cap in the axial direction of the upper piston rod of the double-rod rolling lifting cylinder, and the adjusting position detection encoder detects the position of the screw cap. When the screw cap is adjusted to the correct position, the adjusting motor stops rotating; B. The lower piston rod of the double-rod rolling lifting cylinder is controlled to extend to press the rolling wheel assembly to the position where the screw cap and the support clamping block are pressed, the rolling locking blocks are driven by the locking cylinders to clamp the upper piston rod, and the locking detection receiving probe loses the received signal; C. The gap detection camera device is controlled to extend and detect the rolling gap, and the actual value is compared with the set value. If the actual value is within the normal deviation range, the next automatic welding step is performed. If the actual value exceeds the deviation range, the automatic welding step is interrupted and an alarm is given; D. During the welding rolling, if the locking detection receiving probe receives a signal, the automatic welding step is interrupted and an alarm is given.

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