Gantry type ground rail device for single crystal silicon rod detection

Abstract

The utility model relates to the technical field of single crystal silicon rod detection, and provides a gantry type ground rail device for single crystal silicon rod detection, which comprises a ground rail mechanism, a gantry mechanism and a silicon rod rotating table, the ground rail mechanism comprises a base, a sliding rail and a sliding platform. Sliding rails are arranged on the two sides of the base respectively. A rack is arranged on the sliding rail; a sliding platform is arranged on each sliding rail; a servo motor is arranged on the sliding platform; gears are arranged at the output ends of the servo motors, and the gears are meshed with the corresponding racks; the gantry mechanism comprises a mounting plate and two gantry stand columns. The gantry stand columns are arranged on the corresponding sliding platforms, and a mounting plate is connected between the two gantry stand columns. The mounting plate is used for arranging a visual acquisition system; and the silicon rod rotating table is arranged on the base. According to the utility model, the measurement in a full-length range can be realized, and the stability of the visual acquisition system during automatic image data acquisition is ensured.

Description

A gantry-type ground rail device for testing single-crystal silicon rods Technical Field

[0001] This utility model relates to the field of single crystal silicon rod testing technology, and in particular to a gantry-type ground rail device for single crystal silicon rod testing. Background Technology

[0002] Monocrystalline silicon rods are typically 0.5-7.2 meters long and 250-330 mm in diameter, with four crystal lines along their circumference. Before cutting, the silicon rod needs to be inspected, primarily for its effective length and diameter distribution. Following inspection, the data is used to determine the appropriate length for the rod to be segmented, and the segmented data is transmitted to the cutting equipment for processing.

[0003] Currently, there are two methods for testing silicon rods in the photovoltaic industry:

[0004] 1. Measuring the length and diameter of silicon rods manually using tools such as measuring tapes and calipers is extremely inefficient, has a large measurement error, and diameter measurements can only be taken at a few points, making it impossible to measure the entire length range.

[0005] 2. Scanning and acquiring images of silicon rods using a cantilevered scanning mechanism can cause shaking and vibration during operation, which directly affects the accuracy of image acquisition and often results in pixel misalignment and blurring. Summary of the Invention

[0006] This invention primarily addresses the low efficiency of manual inspection in existing technologies, as well as the technical problems caused by the cantilevered scanning mechanism leading to shaking and vibration during operation, which affects the accuracy of image acquisition. It proposes a gantry-type ground rail device for single-crystal silicon rod inspection, capable of covering the entire length of the silicon rod, enabling measurement across the entire length range, and ensuring the stability of the vision acquisition system during automatic image data acquisition, thereby improving the accuracy and efficiency of inspection.

[0007] This utility model provides a gantry-type ground rail device for testing single crystal silicon rods, including: a ground rail mechanism, a gantry mechanism, and a silicon rod rotating table;

[0008] The ground track mechanism includes: a base, a slide rail, and a sliding platform;

[0009] The base is provided with slide rails on both sides; racks are arranged on the slide rails; a sliding platform is provided on each slide rail; a servo motor is provided on the sliding platform; a gear is provided at the output end of the servo motor, and the gear meshes with the corresponding rack.

[0010] The gantry mechanism includes: a mounting plate and two gantry columns; the gantry columns are mounted on corresponding sliding platforms, and the mounting plate connects the two gantry columns; the mounting plate is used to arrange the vision acquisition system.

[0011] The silicon rod rotary table is mounted on the base.

[0012] Preferably, the silicon rod rotary table includes: a rotary table base, a rotary table frame, a rotary table motor, a rotary table drive shaft, rollers, and roller brackets;

[0013] Both ends of the turntable frame are fixedly connected to the base via turntable feet;

[0014] The turntable frame is equipped with multiple roller frames; each roller frame is equipped with two rollers; each roller is connected to the turntable drive shaft via a belt mechanism.

[0015] The turntable drive shaft is movably mounted through the bottom of multiple roller frames;

[0016] A turntable motor is installed on the turntable frame, and a turntable reducer is installed at the output end of the turntable motor. The turntable reducer is connected to the turntable drive shaft.

[0017] Preferably, the base includes two main square tubes and multiple horizontal tie square tubes; the multiple horizontal tie square tubes are welded between the two main square tubes;

[0018] The main square tube and the horizontal tie square tube are made of carbon steel square tube.

[0019] Preferably, a drag chain is provided between the sliding platform and the base.

[0020] Preferably, the lower part of the mounting plate has an arc-shaped opening that allows the single-crystal silicon rod to pass through.

[0021] Preferably, the visual acquisition device includes a light source, multiple cameras, and multiple laser diameter gauges.

[0022] This invention provides a gantry-type ground rail device for inspecting single-crystal silicon rods. Each rail is equipped with a sliding platform, on which a servo motor and a gantry column are mounted. Two servo motors work synchronously, driving the sliding platform and its gantry mechanism along the rails via a rack and pinion system. A vision acquisition system is mounted on the gantry mechanism, enabling it to move along the length of the base. This allows the vision acquisition system to scan and acquire images and data of the silicon rod placed on the rotating platform for optical inspection. This invention allows the vision acquisition system to cover the entire length of the silicon rod, enabling measurement across the entire length range and significantly improving inspection efficiency. Combined with the vision acquisition system, measurement accuracy is improved and measurement errors are reduced. Furthermore, the ground rail mechanism uses a dual-side, dual-power synchronous drive, ensuring the stability of the vision acquisition system during automatic image data acquisition. This avoids image acquisition abnormalities or data acquisition errors caused by jitter and vibration, improving inspection accuracy and achieving high-precision inspection. Attached Figure Description

[0023] Figure 1 is a schematic diagram of the gantry-type ground rail device for detecting single crystal silicon rods provided by this utility model;

[0024] Figure 2 is a partially enlarged schematic diagram of Figure 1;

[0025] Figure 3 is a schematic diagram of the application of the gantry-type ground rail device for detecting single crystal silicon rods provided by this utility model;

[0026] Figure 4 is a schematic diagram of the silicon rod rotary table provided by this utility model.

[0027] Reference numerals: 1. Silicon rod; 2. Base; 3. Slide rail; 4. Servo motor; 5. Sliding platform; 6. Gantry column; 7. Cable chain; 8. Silicon rod rotary table; 9. Vision system; 10. Vision control cabinet; 11. PLC control cabinet;

[0028] 801. Turntable base; 802. Turntable frame; 803. Turntable motor; 804. Idler roller; 805. Idler roller frame; 806. Turntable drive shaft; Detailed Implementation

[0029] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.

[0030] As shown in Figures 1-3, the present invention provides a gantry-type ground rail device for detecting single crystal silicon rods, comprising: a ground rail mechanism, a gantry mechanism, and a silicon rod rotating table 8.

[0031] The ground track mechanism includes: a base 2, a slide rail 3, and a sliding platform 5. The base 2 includes two main square tubes and multiple horizontal tie square tubes; the multiple horizontal tie square tubes are welded between the two main square tubes; the main square tubes are located in the length direction of the base 2, and the horizontal tie square tubes are located in the width direction of the base 2. The main square tubes and the horizontal tie square tubes are made of carbon steel square tubes, which have good structural stability.

[0032] The base 2 is provided with slide rails 3 on both sides; racks are arranged on the slide rails 3; a sliding platform 5 is provided on each slide rail 3; a servo motor 4 is provided on the sliding platform 5; a gear is provided at the output end of the servo motor 4, and the gear meshes with the corresponding rack; a drag chain 7 is provided between the sliding platform 5 and the base 2 to carry the cable and protect the cable.

[0033] The gantry mechanism includes: a mounting plate and two gantry columns 6; the gantry columns 6 are set on the corresponding sliding platform 5, and the mounting plate is connected between the two gantry columns 6; the mounting plate is used to arrange the vision acquisition system 9; the lower part of the mounting plate has an arc-shaped opening that allows the silicon rod 1 to pass through, so that the vision acquisition system 9 can scan above the silicon rod 1.

[0034] The silicon rod rotary table 8 is mounted on the base 2. As shown in Figure 4, the silicon rod rotary table 8 includes: a turntable base 801, a turntable frame 802, a turntable motor 803, a turntable drive shaft 806, rollers 804, and roller brackets 805. The two ends of the turntable frame 802 are fixedly connected to the base 2 via the turntable base 801; multiple roller brackets 805 are mounted on the turntable frame 802; each roller bracket 805 has two rollers 804, with a concave shape between the two rollers 804 for placing the silicon rod 1; each roller 804 is connected to the turntable drive shaft 806 via a belt mechanism; the turntable drive shaft 806 is movably inserted through the bottom of the multiple roller brackets 805; the turntable motor 803 is mounted on the turntable frame 802, and a turntable reducer is mounted at the output end of the turntable motor 803, which is connected to the turntable drive shaft 806.

[0035] Silicon rod 1 is placed on a silicon rod rotary table 8 and supported by multiple sets of rollers 804. During operation, the rotary table 8 is driven by a rotary table motor 803 via a rotary table reducer, which in turn drives the rotary table transmission shaft 806 to rotate. The rotary table transmission shaft 806 then drives each set of rollers 804 to rotate synchronously, thus rotating the silicon rod 1. This invention utilizes a silicon rod rotary table 8 to achieve the rotation of the silicon rod 1, facilitating the acquisition of the state of the four crystal lines on the circumference of the silicon rod 1 by the vision acquisition system 9.

[0036] In this utility model, the servo motor 4 and the turntable motor 803 are electrically connected to the PLC control cabinet 11 and are controlled by the PLC control cabinet 11 to realize the movement of the sliding platform, the gantry mechanism and the vision acquisition system 9 on the gantry mechanism, as well as the rotation of the silicon rod, signal interaction and abnormal situation alarm, etc.

[0037] The mounting plate of this invention can accommodate a vision acquisition system 9. The vision acquisition system 9 includes a light source, multiple cameras, and multiple laser diameter gauges. The vision acquisition system is electrically connected to the vision control cabinet 10.

[0038] In this embodiment, each slide rail 3 is equipped with a sliding platform 5, and a servo motor 4 and a gantry column 6 are installed on the sliding platform 5. The two servo motors 4 work synchronously and can drive the sliding platform 5 and the gantry mechanism on it to move along the slide rail 3 through a gear rack. A vision acquisition system 9 is arranged on the gantry mechanism, which can drive the vision acquisition system 9 to move along the length direction of the base 2, so that the vision acquisition system 9 can scan the silicon rod 1 placed on the silicon rod rotary table 8, acquire the image and data of the silicon rod 1, so as to perform optical inspection of the silicon rod 1.

[0039] The images and data of silicon rod 1 collected by vision acquisition system 9 are uploaded to vision control cabinet 10. Based on the images or data collected by multiple cameras and laser diameter measuring instruments, vision control cabinet 10 analyzes the diameter value, crystal wire state and length information of silicon rod 1 throughout its entire length range, thereby providing effective detection data for subsequent processes and facilitating the segmented cutting of silicon rod 1.

[0040] This invention moves the vision acquisition system 9, enabling it to cover the entire length of the silicon rod 1, achieving measurement across the entire length range and significantly improving detection efficiency. Combined with the vision acquisition system 9, it enhances measurement accuracy and reduces measurement errors. Furthermore, the ground track mechanism employs a dual-side, dual-power synchronous drive, ensuring the stability of the vision acquisition system 9 during automatic image data acquisition. This prevents image acquisition anomalies or data acquisition errors caused by jitter and vibration, improving detection accuracy and achieving high-precision detection.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications to the technical solutions described in the foregoing embodiments, or equivalent substitutions for some or all of the technical features, do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A gantry-type ground rail device for detecting single-crystal silicon rods, characterized in that, include: The system comprises a ground rail mechanism, a gantry mechanism, and a silicon rod rotary table (8); the ground rail mechanism includes: a base (2), a slide rail (3), and a sliding platform (5); slide rails (3) are respectively provided on both sides of the base (2); racks are arranged on the slide rails (3); a sliding platform (5) is provided on each slide rail (3); a servo motor (4) is provided on the sliding platform (5); a gear is provided at the output end of the servo motor (4), and the gear meshes with the corresponding rack; the gantry mechanism includes: a mounting plate and two gantry columns (6); the gantry columns (6) are set on the corresponding sliding platforms (5), and a mounting plate is connected between the two gantry columns (6); a vision acquisition system (9) is arranged on the mounting plate; the silicon rod rotary table (8) is set on the base (2).

2. The gantry-type ground rail device for detecting single-crystal silicon rods according to claim 1, characterized in that, The silicon rod rotary table (8) includes: a turntable base (801), a turntable frame (802), a turntable motor (803), a turntable drive shaft (806), rollers (804), and roller frames (805); the two ends of the turntable frame (802) are fixedly connected to the base (2) through the turntable base (801); multiple roller frames (805) are provided on the turntable frame (802); two rollers (804) are provided on each roller frame (805); each roller (804) is connected to the turntable drive shaft (806) through a belt mechanism; the turntable drive shaft (806) is movably inserted through the bottom of the multiple roller frames (805); the turntable motor (803) is provided on the turntable frame (802), and a turntable reducer is provided at the output end of the turntable motor (803), and the turntable reducer is connected to the turntable drive shaft (806).

3. A gantry-type ground rail device for detecting single-crystal silicon rods according to claim 2, characterized in that, The base (2) includes two main square tubes and multiple horizontal square tubes; the multiple horizontal square tubes are welded between the two main square tubes; the main square tubes and the horizontal square tubes are made of carbon steel square tubes.

4. A gantry-type ground rail device for detecting single-crystal silicon rods according to claim 3, characterized in that, A drag chain (7) is provided between the sliding platform (5) and the base (2).

5. A gantry-type ground rail device for detecting single-crystal silicon rods according to claim 1, characterized in that, The mounting plate has an arc-shaped opening at the bottom that allows the single-crystal silicon rod to pass through.

6. A gantry-type ground rail device for detecting single-crystal silicon rods according to claim 1, characterized in that, The visual acquisition system (9) includes a light source, multiple cameras, and multiple laser diameter gauges.

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