Dimension inspection system for steel plate cutting production
Through the measurement method of combining conductive sliding contacts with resistive slide rods and the induced electromotive force detection of permanent magnets, the problems of low measurement accuracy and poor stability in traditional steel plate cutting production are solved, and efficient and reliable dimensional detection is achieved.
Patent Information
- Application Number
- CN202510653106.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-21
- Publication Date
- 2025-08-12
AI Technical Summary
In traditional steel plate cutting production, manual measurement accuracy is unstable and low efficiency, and fixed sensor measurements are susceptible to the sliding of the steel plate, resulting in unreal dimension data.
The conductive sliding contact is used to contact the edge of the steel plate, combined with the resistive sliding rod and the conductive sliding plate to measure the width, and the magnetic inductive line generated by the permanent magnet is used to sense the electromotive force to detect the speed and displacement. The conductive sliding contact is adjusted to adapt to different widths by adjusting the motor, and the center of the steel plate is maintained in combination with the center roller structure.
High-precision and real-time steel plate size measurement is achieved, avoiding manual measurement errors and sensor deviations, and ensuring the reliability of cutting position and production stability.
Smart Images
Figure CN120467159A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of steel plate size inspection, in particular to a size inspection system for steel plate cutting production. Background Art
[0002] In traditional steel plate cutting production, dimensional inspection typically relies on manual measurement or simple mechanical devices. Manual measurement primarily involves checking the width and length of the steel plate section by section using a tape measure or caliper. This method is time-consuming, inefficient, and susceptible to operator experience and fatigue, resulting in unstable measurement accuracy. This error is particularly pronounced when processing large batches or coils of steel plate. Another common method uses a fixed sensor to measure the number of revolutions of the rollers that move the steel plate, using the circumference to determine the plate's moving dimensions. While this method can achieve a certain degree of automation, if the steel plate and rollers slip relative to each other, the measured dimensional data will be inaccurate. Summary of the Invention
[0003] In order to overcome the defects of the above-mentioned prior art, the present invention provides the following technical solutions: a size inspection system for steel plate cutting production, comprising a base plate, on which a top permanent magnet and a bottom permanent magnet are fixedly mounted, wherein the top permanent magnet is fixedly mounted above the bottom permanent magnet by a top permanent magnet bracket, and a gap is provided between the top permanent magnet and the bottom permanent magnet to allow the steel plate to pass through; conductive sliding contacts that slide and conduct with the edge of the steel plate are symmetrically provided on both sides of the gap between the top permanent magnet and the bottom permanent magnet, and the distance between the two conductive sliding contacts is adjusted by an adjusting motor; two parallel ceramic slide bars and a power-leading slide bar are fixedly mounted on each conductive sliding contact, wherein the power-leading slide bar is insulated from the conductive sliding contact, and the ceramic slide bar and the power-leading slide bar are both surrounded by an extrusion spring, and the two conductive sliding contacts are slidably mounted on two adjustment arms through the corresponding power-leading slide bar and the ceramic slide bar, and the two ends of the extrusion spring are fixedly matched with the conductive sliding contact and the adjustment arm.
[0004] Preferably, an adjustment rack is fixedly mounted on each adjustment arm, the two adjustment racks are engaged and transmitted through an adjustment gear, and the two adjustment racks are symmetrically arranged about the center point of the adjustment gear. Both adjustment racks are slidably mounted on the adjustment seat, and the adjustment seat is fixedly mounted on the base plate.
[0005] Preferably, two symmetrically arranged sliding support plates are fixedly mounted on the adjustment seat, wherein the two adjustment arms are respectively slidably mounted on the two sliding support plates, a conductive sliding piece is fixedly mounted on the ceramic slide rod, the conductive sliding piece, the ceramic slide rod and the conductive sliding contact move synchronously, a resistance slide rod bracket is fixedly mounted on both sliding support plates, a resistance slide rod is fixedly mounted on both resistance slide rod brackets, and the opposite ends of the two resistance slide rods are insulated and fixed on the top permanent magnet through an insulating support isolation frame.
[0006] Preferably, the conductive sliding piece is slidably and conductively sleeved on the circumferential surface of the resistance sliding rod, and one end of the resistance sliding rod and the conductive sliding piece are connected in series to the DC circuit.
[0007] Preferably, a plurality of supporting conveying rollers are installed on the upper surface of the bottom plate in a rolling manner along the movement direction of the steel plate, and the axes of the supporting conveying rollers are arranged perpendicular to the movement direction of the steel plate; wherein two parallel centered sliding frames are fixedly installed on the upper surface of the bottom plate in the movement direction of the steel plate.
[0008] Preferably, two symmetrically arranged center roller brackets are slidably installed on the center sliding frame, and each center roller bracket is rotatably installed with a center roller that rolls with the edge of the steel plate. A support beam is fixedly installed overhead above the bottom plate, and both ends of the support beam are located above the center sliding frame and are fixedly installed with lifting spline rods. Each lifting spline rod is provided with a lifting block by means of spline sliding.
[0009] Preferably, the lifting block and the center roller bracket are movably connected by a lifting connecting rod to adjust the distance between the two center roller brackets. A tension spring is arranged around each lifting spline rod, and both ends of the tension spring are fixedly connected to the support beam and the lifting block.
[0010] Preferably, a base is fixedly mounted on the lower surface of the bottom plate, wherein the adjustment motor is fixedly mounted on the lower surface of the bottom plate, and the output shaft of the adjustment motor passes through the bottom plate and the adjustment seat and is fixedly connected to the adjustment gear.
[0011] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention can accurately measure the width of the steel plate in real time by combining the sliding measurement mechanism of the resistive sliding rod and the conductive sliding sheet with the contact between the conductive sliding contact and the edge of the steel plate. The adjustment motor drives the adjustment gear and rack, so that the conductive sliding contact can flexibly adapt to steel plates of different widths, and the change of the resistance value in the DC circuit further improves the measurement accuracy. This design avoids the errors caused by traditional manual measurement or fixed sensors, ensures the reliability of the size calibration before the steel plate is cut, and provides high-precision data support for subsequent processing; (2) The centering roller and lifting connecting rod structure provided by the present invention can automatically adjust the centering roller spacing through the cooperation of the tension spring and the lifting spline rod, so that the steel plate always remains in the center position of the supporting conveying roller during the conveying process. This automatic centering function effectively avoids measurement or cutting deviations caused by steel plate offset, improving the stability and consistency of the production process. (3) The present invention utilizes the magnetic field generated by the top and bottom permanent magnets. When the steel plate moves, the magnetic flux lines are cut to generate an induced electromotive force. The magnitude of the induced electromotive force is measured by a conductive sliding contact and a voltage sensor. Combined with the known width of the steel plate, the movement speed and displacement can be calculated. This non-contact measurement method not only simplifies the complexity of speed detection, but also provides real-time data on the distance the steel plate moves, providing a reliable basis for precise control of the cutting position. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention.
[0013] Figure 2 It is a schematic diagram of the base structure of the present invention.
[0014] Figure 3 This is a structural schematic diagram of the insulating support isolation frame of the present invention.
[0015] Figure 4 This is a structural distribution diagram of the support and conveying roller of the present invention.
[0016] Figure 5 This is a schematic diagram of the structure of the adjustment rack of the present invention.
[0017] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at point A in the middle.
[0018] In the figure: 101-bottom plate; 102-base; 103-adjusting motor; 104-top permanent magnet bracket; 105-centering sliding frame; 106-centering roller bracket; 107-centering roller; 108-lifting connecting rod; 109-lifting spline rod; 110-tension spring; 111-support beam; 112-lifting block; 113-top permanent magnet; 114-bottom permanent magnet; 115-support conveyor roller; 116-resistance slide rod bracket; 117-resistance slide rod; 118-insulating support isolation frame; 119-conductive sliding sheet; 120-ceramic slide rod; 121-sliding support plate; 122-adjusting seat; 123-adjusting arm; 124-adjusting rack; 125-adjusting gear; 126-conductive sliding contact; 127-leading slide rod; 128-extrusion spring. DETAILED DESCRIPTION
[0019] The following is combined with Figures 1-6 , and further illustrate the technical solution of the present invention through specific implementation methods.
[0020] The present invention provides a size inspection system for steel plate cutting production, comprising a base plate 101, on which a top permanent magnet 113 and a bottom permanent magnet 114 are fixedly mounted, wherein the top permanent magnet 113 is fixedly mounted above the bottom permanent magnet 114 via a top permanent magnet bracket 104, and a gap is provided between the top permanent magnet 113 and the bottom permanent magnet 114 to allow the steel plate to pass through; conductive sliding contacts 126 are symmetrically provided on both sides of the gap between the top permanent magnet 113 and the bottom permanent magnet 114 to contact and slide with the edge of the steel plate for conductive cooperation, and the distance between the two conductive sliding contacts 126 is adjusted by adjusting the distance between the two conductive sliding contacts 126. The motor 103 is adjusted; two parallel ceramic slide bars 120 and a power-leading slide bar 127 are fixedly mounted on each conductive sliding contact 126, wherein the power-leading slide bar 127 is in conductive cooperation with the conductive sliding contact 126, and the ceramic slide bar 120 is insulated cooperation with the conductive sliding contact 126, and an extrusion spring 128 is provided around the ceramic slide bar 120 and the power-leading slide bar 127, and the two conductive sliding contacts 126 are slidably mounted on the two adjustment arms 123 through the corresponding power-leading slide bars 127 and the ceramic slide bar 120, and the two ends of the extrusion spring 128 are fixedly matched with the conductive sliding contact 126 and the adjustment arm 123. Each adjustment arm 123 is fixedly mounted with an adjustment rack 124. The two adjustment racks 124 are meshed and coupled via an adjustment gear 125. The two adjustment racks 124 are symmetrically arranged about the center of the adjustment gear 125. The two adjustment racks 124 are slidably mounted on an adjustment seat 122, which is fixedly mounted on the base plate 101. The adjustment seat 122 is fixedly mounted with two symmetrically arranged sliding support plates 121. The two adjustment arms 123 are slidably mounted on the two sliding support plates 121, respectively. A conductive sliding piece 119 is fixedly mounted on the ceramic slide 120. The conductive sliding piece 119, ceramic slide 120, and conductive sliding contact 126 move synchronously. Resistive slide rod brackets 116 are fixedly mounted on both sliding support plates 121. Resistive slide rods 117 are fixedly mounted on both resistance slide rod brackets 116. The opposing ends of the two resistance slide rods 117 are insulated and fixed to the top permanent magnet 113 via insulating support isolation frames 118. A conductive sliding sheet 119 is slidably mounted on the circumferential surface of a resistive sliding rod 117. One end of the resistive sliding rod 117 and the conductive sliding sheet 119 are connected in series to a DC circuit. Multiple support rollers 115 are mounted on the upper surface of the base plate 101, rolling along the direction of motion of the steel plate. The axes of the support rollers 115 are perpendicular to the direction of motion of the steel plate. Two parallel, centrally located sliding frames 105 are fixedly mounted on the upper surface of the base plate 101, in the direction of motion of the steel plate.Two symmetrically arranged center roller brackets 106 are slidably mounted on the center sliding frame 105. A center roller 107 that rolls with the edge of the steel plate is rotatably mounted on each center roller bracket 106. A support beam 111 is fixedly mounted overhead above the bottom plate 101. Both ends of the support beam 111 are fixedly mounted with lifting spline rods 109 above the center sliding frame 105. Each lifting spline rod 109 is sleeved with a lifting block 112 by means of spline sliding. The lifting block 112 is movably connected to the center roller bracket 106 through a lifting connecting rod 108, which is used to adjust the distance between the two center roller brackets 106. A tension spring 110 is arranged around each lifting spline rod 109, and both ends of the tension spring 110 are fixedly connected to the support beam 111 and the lifting block 112. A base 102 is fixedly mounted on the lower surface of the bottom plate 101 , wherein the adjustment motor 103 is fixedly mounted on the lower surface of the bottom plate 101 , and the output shaft of the adjustment motor 103 passes through the bottom plate 101 and the adjustment seat 122 and is fixedly connected to the adjustment gear 125 .
[0021] The disclosed dimensional inspection system for steel plate cutting production operates as follows: During the steel plate cutting process, the steel plate's dimensions need to be measured to calibrate the cutting position. The steel plate to be cut is placed on support conveyor rollers 115 (rolled steel plates need to be unrolled, flattened, and stress-released before operation). The steel plate then moves along the support conveyor rollers 115 (driven by the conveyor rollers). Two sets of centering rollers 107 in the direction of movement center the steel plate left and right, ensuring it is centered between the support conveyor rollers 115. At the same time, it is necessary to make the two conductive sliding contacts 126 fit with the edge of the steel plate. Specifically, by controlling the adjusting motor 103, the output shaft of the adjusting motor 103 drives the adjusting gear 125 to rotate, and the adjusting gear 125 drives the two adjusting racks 124 to move relative to each other. The two adjusting racks 124 drive the two adjusting arms 123 to slide relative to each other on the sliding support plate 121, thereby driving the two conductive sliding contacts 126 to move relative to each other, so that the two conductive sliding contacts 126 contact the edge of the steel plate, and the adjusting arm 123 compresses all the extrusion springs 128 to ensure the contact pressure between the conductive sliding contacts 126 and the edge of the steel plate (it should be noted that a worm gear transmission mechanism is provided in the transmission path between the adjusting motor 103 and the adjusting gear 125). During the movement of the conductive sliding contact 126, the conductive sliding contact 126, the ceramic sliding rod 120 and the conductive sliding piece 119 move synchronously. Therefore, the displacement of the conductive sliding contact 126 can be determined by measuring the displacement of the conductive sliding piece 119. The conductive sliding piece 119 slides on the resistance sliding rod 117. The position of the conductive sliding piece 119 on the resistance sliding rod 117 can be determined by the current in the DC circuit where the conductive sliding pieces 119 and the resistance sliding rod 117 on both sides are located. The resistance values corresponding to different positions of the conductive sliding piece 119 on the resistance sliding rod 117 are different, so the current is also different. The width of the steel plate can be determined by the sum of the displacements of the conductive sliding contact 126 measured by the two sets of resistance sliding rods 117 and the conductive sliding piece 119.
[0022] When the steel plate moves between the top permanent magnet 113 and the bottom permanent magnet 114, the width direction of the steel plate will move perpendicularly to the magnetic flux lines between the top permanent magnet 113 and the bottom permanent magnet 114, so that the steel plate cuts the magnetic flux lines. At this time, induced electromotive force will be generated at both ends of the steel plate in the width direction, and will be guided to the voltage sensor capable of measuring the magnitude of the induced electromotive force through the conductive sliding contact 126 and the power-inducing slide rod 127. The distance between the two conductive sliding contacts 126 measured previously, that is, the width of the steel plate, combined with the magnitude of the induced electromotive force measured by the voltage sensor, can be used to determine the movement speed of the steel plate (the movement speed of the steel plate is proportional to the potential difference between the two ends), and the movement distance of the steel plate can be measured in combination with the movement time of the steel plate, thereby checking the displacement of the steel plate and cutting the steel plate.
Claims
1. A dimensional inspection system for steel plate cutting production, characterized by: The invention comprises a bottom plate (101), wherein a top permanent magnet (113) and a bottom permanent magnet (114) are fixedly mounted on the bottom plate (101), wherein the top permanent magnet (113) is fixedly mounted above the bottom permanent magnet (114) via a top permanent magnet bracket (104), and a gap is provided between the top permanent magnet (113) and the bottom permanent magnet (114) so as to allow a steel plate to pass through. Conductive sliding contacts (126) that are in contact with the edge of the steel plate and are electrically conductive are symmetrically arranged on both sides of the gap between the top permanent magnet (113) and the bottom permanent magnet (114). The distance between the two conductive sliding contacts (126) is adjusted by adjusting the motor (103). Two parallel ceramic slide bars (120) and a power-inducing slide bar (127) are fixedly mounted on each conductive sliding contact (126). The power-inducing slide bar (127) and the conductive sliding contact (120) are connected to each other. 6) Conductive matching, the ceramic slide bar (120) and the conductive sliding contact (126) are insulated and matched, and a compression spring (128) is provided around the ceramic slide bar (120) and the lead-in slide bar (127). The two conductive sliding contacts (126) are slidably mounted on the two adjustment arms (123) through the corresponding lead-in slide bar (127) and the ceramic slide bar (120), and the two ends of the compression spring (128) are fixedly matched with the conductive sliding contact (126) and the adjustment arm (123).
2. A dimensional inspection system for steel plate cutting production according to claim 1, characterized in that: An adjusting rack (124) is fixedly mounted on each adjusting arm (123), and the two adjusting racks (124) are meshed and driven by an adjusting gear (125). The two adjusting racks (124) are symmetrically arranged about the center of the adjusting gear (125). The two adjusting racks (124) are slidably mounted on the adjusting seat (122), and the adjusting seat (122) is fixedly mounted on the base plate (101).
3. A dimensional inspection system for steel plate cutting production according to claim 2, characterized in that: Two symmetrically arranged sliding support plates (121) are fixedly mounted on the adjustment seat (122), wherein two adjustment arms (123) are respectively slidably mounted on the two sliding support plates (121), a conductive sliding piece (119) is fixedly mounted on the ceramic slide bar (120), and the conductive sliding piece (119), the ceramic slide bar (120), and the conductive sliding contact (126) move synchronously. A resistance slide bar bracket (116) is fixedly mounted on each of the two sliding support plates (121), and a resistance slide bar (117) is fixedly mounted on each of the two resistance slide bar brackets (116). The opposite ends of the two resistance slide bars (117) are insulated and fixed on the top permanent magnet (113) through an insulating support isolation frame (118).
4. A dimensional inspection system for steel plate cutting production according to claim 3, characterized in that: The conductive sliding piece (119) is provided as a sliding conductive sleeve on the circumferential surface of the resistance sliding rod (117), and one end of the resistance sliding rod (117) and the conductive sliding piece (119) are connected in series to a DC circuit.
5. The dimensional inspection system for steel plate cutting production according to claim 4, characterized in that: A plurality of supporting conveying rollers (115) are rollingly mounted on the upper surface of the bottom plate (101) along the moving direction of the steel plate, and the axes of the supporting conveying rollers (115) are arranged perpendicular to the moving direction of the steel plate; wherein two parallel central sliding frames (105) are fixedly mounted on the upper surface of the bottom plate (101) in the moving direction of the steel plate.
6. A dimensional inspection system for steel plate cutting production according to claim 5, characterized in that: Two symmetrically arranged center roller brackets (106) are slidably mounted on the center sliding frame (105), and a center roller (107) that rolls with the edge of the steel plate is rotatably mounted on each center roller bracket (106). A support beam (111) is fixedly mounted overhead above the bottom plate (101), and lifting spline rods (109) are fixedly mounted at both ends of the support beam (111) above the center sliding frame (105), and a lifting block (112) is sleeved on each lifting spline rod (109) by means of spline sliding.
7. A dimensional inspection system for steel plate cutting production according to claim 6, characterized in that: The lifting block (112) and the center roller bracket (106) are movably connected via a lifting connecting rod (108) for adjusting the distance between the two center roller brackets (106). A tension spring (110) is provided around each lifting spline rod (109), and both ends of the tension spring (110) are fixedly connected to the support beam (111) and the lifting block (112).
8. The dimensional inspection system for steel plate cutting production according to claim 7, characterized in that: A base (102) is fixedly mounted on the lower surface of the bottom plate (101), wherein the adjustment motor (103) is fixedly mounted on the lower surface of the bottom plate (101), and the output shaft of the adjustment motor (103) passes through the bottom plate (101) and the adjustment seat (122) and is fixedly connected to the adjustment gear (125).