A rapid sorting device for hot-rolled ribbed steel bars

Abstract

The utility model discloses a kind of for hot-rolled ribbed steel bar's quick sorting device, including conveying mechanism, length and diameter measuring mechanism, rib measuring device, sorting execution mechanism and control system;Conveying mechanism conveys steel bar by conveying gyro wheel group, and guide plate guides steel bar into position;Length and diameter measuring mechanism is synchronous with the fixed rod of built-in pressure sensor with the encoding wheel of incremental encoder, and detects steel bar length and diameter;Rib measuring device's laser range finder sensor obtains rib parameter;After control system resolves parameter, push pneumatic push plate by the cylinder of sorting execution mechanism, and steel bar is sent into corresponding collection groove.This device integrates multiple parameter detection and automation sorting, improves hot-rolled ribbed steel bar sorting efficiency and accuracy, and is suitable for large-scale production scene.

Description

Technical Field

[0001] This utility model belongs to the post-processing technology field of hot-rolled ribbed steel bar production in the iron and steel metallurgy industry. Specifically, it relates to a rapid sorting device for hot-rolled ribbed steel bars, which is particularly suitable for scenarios where hot-rolled ribbed steel bars are quickly classified according to specifications such as diameter, length and surface rib parameters. Background Technology

[0002] In the fields of iron and steel metallurgy and building materials processing, hot-rolled ribbed steel bars are core materials for building structures. Their specifications (diameter, length) and surface rib parameters (rib height, rib spacing) directly affect the quality and safety of engineering projects. Currently, the sorting of hot-rolled ribbed steel bars mainly relies on two methods:

[0003] Manual sorting: This involves workers using calipers and measuring tapes to measure the diameter and length of each steel bar, visually inspecting the surface rib features, and then sorting and stacking them according to specifications. This method has significant drawbacks:

[0004] The efficiency is extremely low, with a single shift of 20 people handling only 100-150 tons per day, which is difficult to match the daily production capacity of thousands of tons in modern steel plants; the error rate is high, the labor intensity is high, a single 20mm diameter, 9m long steel bar weighs 22.2kg, frequent handling by workers can easily cause work-related injuries, and the safety of working in high temperature environments is poor.

[0005] Traditional mechanical sorting equipment, such as vibrating screens and fixed-size baffle sorters, while partially replacing manual labor, has significant limitations: It has a single function, only able to distinguish diameters by screen aperture or baffle spacing, unable to detect length and rib parameters, leading to mixing of ribbed steel bars of different strength grades (HRB400 and HRB500, with rib height differences of 0.2-0.5mm); poor adaptability, as fixed-size sorting components require specific steel bar specifications, necessitating machine shutdown and disassembly for 1-2 hours when changing specifications, making it difficult to meet the flexible production needs of small batches and multiple varieties; and insufficient stability, as steel bars are prone to shifting due to surface rib friction during transport, and traditional equipment lacks guiding constraints, affecting detection accuracy with a false detection rate as high as 3%-5%.

[0006] In addition, although a small number of automated sorting solutions have emerged in the existing technology, most of them rely on visual recognition systems (such as industrial cameras + image algorithms), which have problems such as high cost (the cost of a single set of equipment exceeds 2 million yuan) and poor environmental adaptability (high temperature and dust can easily cause lens contamination and detection failure), making it difficult to promote and apply them in small and medium-sized steel plants.

[0007] Therefore, developing a cost-effective, multi-parameter-detecting, multi-specification-adaptable, and highly stable automated sorting device is key to solving the pain points of hot-rolled ribbed steel bar sorting. Summary of the Invention

[0008] To address the aforementioned problems, this utility model provides a rapid sorting device for hot-rolled ribbed steel bars, the specific technical solution of which is as follows:

[0009] A rapid sorting device for hot-rolled ribbed steel bars includes a conveying mechanism, a length and diameter measuring mechanism, a rib measuring device, a sorting execution mechanism, and a control system; the conveying mechanism includes a base, a guide plate, and a set of conveying rollers rotatably mounted on the base;

[0010] The core of the length and diameter measuring mechanism is an integrated detection unit, which includes a gantry mounted on a base, a bracket fixed on the gantry, a handwheel, a slide module, a sensor mounting base fixed on the slide module, an encoder wheel fixing rod, and an encoder wheel. The handwheel and the slide module are connected by a lead screw, which can drive the slide module to move up and down in the vertical direction. The encoder wheel fixing rod has a built-in pressure sensor, and the encoder wheel is rotatably mounted on the end of the encoder wheel fixing rod. The encoder wheel integrates an incremental encoder.

[0011] The rib measurement device includes a laser rangefinder sensor, which is fixed on a sensor bracket and mounted on a gantry frame.

[0012] The sorting mechanism includes a pneumatic push plate, a cylinder for driving the pneumatic push plate, a collection trough arranged along the conveying width direction, and a buffer baffle set at the end of the conveying process.

[0013] The control system is a PLC or a microcontroller, which is connected to the pressure sensor, the incremental encoder of the encoder wheel, and the laser rangefinder sensor via signal lines.

[0014] Furthermore, the outer periphery of the coding wheel is covered with a wear-resistant rubber layer or a ceramic layer.

[0015] Furthermore, the length and diameter measuring mechanism and the rib measuring device are arranged in a front-to-back manner via a gantry frame, with the rib measuring device located at the rear of the length and diameter measuring mechanism.

[0016] Furthermore, the cylinder is a double-acting cylinder, and its piston rod is connected to the pneumatic push plate by a threaded connection or a pin connection.

[0017] Furthermore, the impact-facing surface of the buffer baffle is fitted with a polyurethane buffer pad.

[0018] Furthermore, the conveying roller assembly includes a driving roller and a driven roller. The driving roller is connected to the output shaft of the geared motor via a coupling. The driving roller and the driven roller are driven by a transmission chain. The geared motor is connected to the control system via a signal line, and its speed is adjusted by the control system.

[0019] Furthermore, the guide plate opening is provided with a flared opening.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] By employing the coordinated operation of a mechanical inspection mechanism and a pneumatic sorting execution mechanism, sorting efficiency is significantly improved. Displacement sensors, pressure sensors, and depth sensors enhance inspection accuracy and effectively reduce the risk of quality disputes caused by dimensional deviations. The cooperation between the guide plate and the anti-slip texture of the conveying rollers controls the rebar conveying offset within a small range, avoiding inspection errors caused by positional deviations. This utility model, through its "high efficiency, precision, versatility, and low cost" technical characteristics, systematically solves the core problems of low efficiency, poor precision, high cost, and weak adaptability in the field of hot-rolled ribbed rebar sorting. Attached Figure Description

[0022] For ease of explanation, this utility model is described in detail below with reference to the specific embodiments and accompanying drawings.

[0023] Figure 1 This is a structural diagram of the conveying mechanism and measuring mechanism of this utility model.

[0024] Figure 2 This is a structural diagram of the length and diameter measuring mechanism.

[0025] Figure 3 This is a structural diagram of the rib measurement device.

[0026] Figure 4 This is a structural diagram of the sorting and conveying mechanism.

[0027] 1-Conveying mechanism; 2-Length and diameter measuring mechanism; 3-Rib measuring device; 4-Sorting execution mechanism; 5-Control system; 101-Base; 102-Guide plate; 103-Conveying roller assembly; 21-Gantry frame; 22-Handwheel; 23-Slide module; 24-Sensor mounting base; 25-Encoding wheel fixing rod; 26-Encoding wheel; 31-Laser rangefinder sensor; 32-Sensor bracket; 42-Pneumatic push plate; 43-Cylinder; 44-Collection trough; 45-Buffer baffle. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0029] like Figures 1 to 4 As shown, the present invention provides a rapid sorting device for hot-rolled ribbed steel bars, including a conveying mechanism 1, a length and diameter measuring mechanism 2, a rib measuring device 3, a sorting execution mechanism 4, and a control system.

[0030] The conveying mechanism 1 constitutes the main frame and conveying path of the device. Its base 101 is welded from channel steel and steel plate, which has sufficient structural strength and stability. The conveying roller group 103 is rotatably mounted on the base 101 through bearing seats and is divided into driving rollers and driven rollers. The driving roller is connected to the output shaft of a geared motor through a coupling and is driven to rotate by the motor. The driving roller and the driven roller are driven by a transmission chain, which drives the steel bar forward by friction. The guide plate 102 is installed on both sides of the conveying path and its opening is provided with a flared mouth to guide the steel bar to enter the conveying channel smoothly.

[0031] An electric material distribution baffle can be installed at the beginning of the conveying process. This baffle is driven by an electromagnetic push rod and can swing up and down in the vertical direction to allow single steel bars to pass at intervals, thus avoiding the connection between the ends of the steel bars.

[0032] The core of the length and diameter measuring mechanism 2 is an integrated detection unit located in the middle section of the conveying mechanism 1. This unit includes a gantry frame 21 mounted on the base 101, a bracket fixed on the gantry frame 21, a handwheel 22, a slide module 23, a sensor mounting base 24 fixed on the slide module 23, an encoder wheel fixing rod 25, and an encoder wheel 26. The handwheel 22 and the slide module 23 are connected by a screw, which can drive the slide module 23 to move up and down in the vertical direction. The encoder wheel 26 is rotatably mounted at the end of the encoder wheel fixing rod 25, and its position is slightly higher than the upper surface of the conveying roller group 103, so that the passing steel bars can always keep in contact with the encoder wheel 26 and drive it to rotate. The outer periphery of the encoder wheel 26 is covered with a highly wear-resistant ceramic layer to extend its service life. An incremental encoder is integrated inside the encoder wheel 26. When the encoder wheel rotates, the incremental encoder can emit a corresponding pulse signal. The encoder wheel fixing rod 25 has a built-in pressure sensor for real-time detection of the pressure change of the encoder wheel due to the weight of the steel bar, and to determine the diameter of the steel bar.

[0033] The rib measuring device 3 includes a laser rangefinder sensor 31 and a sensor bracket 32. The laser rangefinder sensor 31 is fixedly mounted on the gantry frame 21 through the sensor bracket 32 ​​and is located directly above the conveying path about 500mm downstream of the encoder wheel 26. Its laser emitter head is vertically aligned with the steel bar below to measure the microscopic height change of the steel bar surface. The length and diameter measuring mechanism 2 and the rib measuring device 3 are arranged in front and behind the gantry frame 21, with the rib measuring device 3 located at the rear of the length and diameter measuring mechanism 2.

[0034] The sorting execution mechanism 4 is located at the end of the conveying mechanism, on one side of the buffer baffle 45; it includes a pneumatic pusher plate 42, a cylinder 43 that drives the pneumatic pusher plate 42, and a series of collection troughs 44; the cylinder 43 is a double-acting cylinder, its cylinder body is mounted on the base 101 through a hinge seat, and its piston rod end is rigidly connected to the pneumatic pusher plate 42 by a thread; the collection troughs 44 are arranged sequentially along the conveying width direction (perpendicular to the rebar conveying path), each trough corresponding to a unique specification combination (such as "φ16mm+6m+HRB335" "φ20mm+9m+HRB400E"), between the diameters of each type of rebar; at the entrance of each collection trough 44, a flared guide plate is welded to ensure that the pushed rebar can smoothly and accurately enter the target collection trough.

[0035] The control system is a PLC controller (Siemens S7-1200 series can be selected), which is installed in a waterproof electrical control box. The PLC controller is electrically connected to the pressure sensor, the incremental encoder of the encoder wheel 26, the laser rangefinder sensor 31, the relay of the solenoid valve of the drive cylinder 43, and the geared motor of the drive conveyor roller assembly via signal cables. If an electric material distribution baffle is provided, the relay of its electromagnetic push rod is also connected to the control system, forming a complete electrical control system. The speed of the geared motor is adjusted by the control system.

[0036] The working principle is as follows:

[0037] The steel bars to be sorted are driven forward by the conveying roller group 103 and guided into the conveying channel through the flared mouth of the guide plate 102. In this embodiment, the spacing of the steel bars is controlled by an externally installed electric material separating baffle.

[0038] The reinforcing bar first contacts and presses against the encoder wheel 26 of the length and diameter measuring mechanism 2. The encoder wheel 26 rotates under friction, driving an internal incremental encoder to emit pulses; the number of pulses is proportional to the length the reinforcing bar has traveled. Simultaneously, a pressure sensor built into the encoder wheel fixing rod 25 senses the pressure from the reinforcing bar. This pressure value has a definite correspondence with the diameter specification of the reinforcing bar (this correspondence can be experimentally calibrated and pre-stored in the PLC). The subsequent rib measurement device 3 uses a laser rangefinder sensor 31 to scan the ribs on the surface of the reinforcing bar. Parameters such as rib depth can be calculated through the periodic changes in the measured distance.

[0039] The PLC controller collects pulse signals from the incremental encoder, pressure values ​​from the pressure sensor, and distance values ​​from the laser rangefinder sensor 31 in real time. Through an internally preset program (this is an application of known technology and not a protected feature of this invention), the PLC can comprehensively calculate the current length, diameter, and type of the reinforcing bar.

[0040] When the tail of the rebar leaves the coding wheel 26 and the head touches the end buffer baffle 45, the PLC determines that the rebar has reached its position. Based on the calculated rebar type, the PLC sends a control signal to the solenoid valve of the cylinder 43 in the corresponding sorting execution mechanism 4; the solenoid valve is energized, driving the cylinder 43 to actuate, the piston rod extends, and pushes the pneumatic pusher plate 42 to push the rebar laterally into the corresponding collection trough 44, completing one sorting operation; then the cylinder 43 resets, ready for the next operation.

[0041] Throughout the process, the various mechanical components of the device work collaboratively under the control of the PLC, achieving automated, rapid, and highly accurate sorting of hot-rolled ribbed steel bars.

[0042] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. The technical content for which protection is sought in the present invention has been fully described in the claims.

Claims

1. A rapid sorting device for hot-rolled ribbed steel bars, characterized in that: It includes a conveying mechanism (1), a length and diameter measuring mechanism (2), a rib measuring device (3), a sorting execution mechanism (4), and a control system; the conveying mechanism (1) includes a base (101), a guide plate (102), and a set of conveying rollers (103) rotatably mounted on the base (101). The core of the length and diameter measuring mechanism (2) is an integrated detection unit, which includes a gantry (21) mounted on a base (101), a bracket fixed on the gantry (21), a handwheel (22), a slide module (23), a sensor mounting base (24) fixed on the slide module (23), an encoder wheel fixing rod (25), and an encoder wheel (26); the handwheel (22) and the slide module (23) are connected by a screw, which can drive the slide module (23) to rise and fall in the vertical direction; the encoder wheel fixing rod (25) has a built-in pressure sensor, the encoder wheel (26) is rotatably mounted on the end of the encoder wheel fixing rod (25), and the encoder wheel (26) integrates an incremental encoder. The rib measuring device (3) includes a laser rangefinder sensor (31), which is fixed on a sensor bracket (32) and installed on a gantry frame (21); The sorting execution mechanism (4) includes a pneumatic push plate (42), a cylinder (43) for driving the pneumatic push plate (42), a collection trough (44) arranged along the conveying width direction, and a buffer baffle (45) set at the end of the conveying. The control system is a PLC or a microcontroller, which is connected to the pressure sensor, the incremental encoder of the encoder wheel (26), and the laser rangefinder sensor (31) via signal lines.

2. A rapid sorting device for hot-rolled ribbed steel bars according to claim 1, characterized in that: The outer periphery of the coding wheel (26) is covered with a wear-resistant rubber layer or a ceramic layer.

3. A rapid sorting device for hot-rolled ribbed steel bars according to claim 1, characterized in that: The length and diameter measuring mechanism (2) and the rib measuring device (3) are arranged in front and behind each other through a gantry frame (21), with the rib measuring device (3) located at the rear of the length and diameter measuring mechanism (2).

4. A rapid sorting device for hot-rolled ribbed steel bars according to claim 1, characterized in that: The cylinder (43) is a double-acting cylinder, and its piston rod is connected to the pneumatic push plate (42) by a thread or a pin.

5. A rapid sorting device for hot-rolled ribbed steel bars according to claim 1, characterized in that: The impact surface of the buffer baffle (45) is fitted with a polyurethane buffer pad.

6. A rapid sorting device for hot-rolled ribbed steel bars according to claim 1, characterized in that: The conveying roller assembly (103) includes a driving roller and a driven roller. The driving roller is connected to the output shaft of the geared motor through a coupling. The driving roller and the driven roller are driven by a conveyor chain. The geared motor is connected to the control system through a signal line. The speed is adjusted by the control system.

7. A rapid sorting device for hot-rolled ribbed steel bars according to claim 1, characterized in that: The guide plate (102) has a flared opening.

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