Line profile detecting and sorting system

Abstract

The invention relates to the technical field of detection and sorting, in particular to a line profile detection and sorting system which comprises a feeding device and a discharging and sorting device which are arranged along a straight line and separated from each other, a laser detection channel is arranged between the feeding device and the discharging and sorting device, and the line profile detection and sorting system comprises an annular support, each laser contourgraph is sequentially opposite to each edge surface of the line profile, the line profile sequentially penetrates through the laser detection channel, each edge surface of the line profile in the length direction is detected at the same time in the uniform motion process, and the laser contourgraphs are in communication connection with a controller. All surface defects of the line profile are monitored in real time and fed back to the controller, and other parts are subjected to coordinated control. Line profiles are fed at a constant speed in the direction from the feeding device to the discharging and sorting device, surface defect scanning is carried out on all edge faces of the line profiles at the same time, qualified products detected are transferred in the direction of the sorting truss, unqualified products continue to be transferred in the discharging direction of the discharging conveying belt, and accurate sorting is achieved.

Description

Technical Field

[0001] This invention relates to the field of inspection and sorting technology, specifically to a linear profile inspection and sorting system. Background Technology

[0002] Traditional contact-based defect detection for linear profiles can only inspect one facet at a time. It involves direct contact between the detection probe (such as a stylus or probe) and the surface being tested. Defects are typically identified by sensing surface geometric changes using stylus-type roughness testers or inductive micrometers. This detection method damages the surface of the part being tested, easily scratching the surface of soft materials or wearing down high-precision polished surfaces. The detection efficiency is extremely low, making it unsuitable for continuous production lines, and the detection efficiency is severely out of sync with the production cycle.

[0003] Contact probes need to be scanned point by point across the surface of the profile. For long profiles, it takes a long time to complete the full surface inspection. Only offline sampling inspection can be used, which cannot achieve 100% full inspection and is prone to missing batch defects.

[0004] Meanwhile, contact probes are difficult to synchronize with the high-speed moving profiles. If they are forcibly installed on the production line, the relative movement will cause severe friction, which will damage the probe and scratch the surface of the profile. If the machine is stopped for testing, the continuous production process will be interrupted, and the production capacity will be greatly reduced.

[0005] High-speed moving linear profiles cannot be automatically sorted after inspection. They cannot automatically and accurately sort qualified and unqualified products and stack them, requiring a lot of manual handling and making it impossible to achieve large-scale automated production. Summary of the Invention

[0006] The purpose of this invention is to provide a linear profile inspection and sorting system to solve the problems mentioned in the background art. This invention uses a feeding device and a sorting device to transfer linear profiles through a laser inspection channel. During uniform motion, each facet along the length direction is simultaneously inspected, and the results are fed back to the controller for coordinated control of other components. Qualified profiles are transferred along the sorting gantry, while unqualified profiles continue to be transferred along the discharge conveyor belt, achieving the advantage of precise sorting.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a linear profile inspection and sorting system, comprising a feeding device and a sorting device arranged in a straight line and separated from each other, with a laser inspection channel between the feeding device and the sorting device. The laser inspection channel includes a ring support, with a plurality of laser profilometers arranged circumferentially on the inner wall of the ring support. The linear profiles step through the laser inspection channel axially, with each laser profilometer sequentially facing each facet of the linear profile. The laser profilometers are communicatively connected to a controller. The linear profiles are fed uniformly from the feeding device to the sorting device. The laser profilometers selectively scan each facet of the linear profile for surface defects. Qualified products are transferred along the sorting truss direction, while unqualified products continue to be transferred along the discharge direction of the discharge conveyor belt. A set of sequential control components is also provided on one side of the feeding device to control the linear profiles to always maintain linear movement.

[0008] As a further embodiment of the present invention, the feeding device includes a feeding conveyor belt, with the side of the feeding conveyor belt near the discharge sorting device being the active end, the active end being provided with an active roller, a feeding motor being provided on one side of the active roller, and a driven end being provided on the other side, with a driven roller being provided on the driven end, and the feeding conveyor belt moving at a constant speed towards the discharge sorting device from the driven end.

[0009] As a further embodiment of the present invention, the feeding device is provided with a trolley transfer device on the feeding side. The trolley transfer device includes a transfer track arranged parallel to the feeding device. A plurality of transfer trolleys are arranged on the transfer track. Each transfer trolley includes a loading body and wheels arranged below the loading body. The wheels are in rolling cooperation with the transfer track. A plurality of layers of linear profiles are stacked inside the loading body. The axial direction of the linear profiles is arranged parallel to the feeding conveyor belt.

[0010] As a further embodiment of the present invention, a feeding truss is provided vertically above the feeding conveyor belt and the transfer trolley, and a reciprocating negative pressure gripping component is provided on the feeding truss along its length.

[0011] As a further embodiment of the present invention, the discharge sorting device includes a discharge conveyor belt arranged in a straight line with the feeding conveyor belt. The end of the discharge conveyor belt near the feeding device is designated as the driven end, and the driven end is provided with a driven wheel. The other end of the discharge conveyor belt is designated as the active end, and the active end is provided with an active wheel. A discharge motor is provided on the side of the active wheel. A gap is provided between the discharge conveyor belt and the feeding conveyor belt for the installation of a laser detection channel. The discharge conveyor belt is correspondingly arranged with one of the transfer trolleys on the transfer track. A sorting truss is vertically arranged above the discharge conveyor belt and the transfer trolley. The sorting truss is provided with a reciprocating negative pressure gripping component along its length.

[0012] As a further embodiment of the present invention, the negative pressure gripping component includes a truss slider that is slidably coupled with the truss. The truss slider is equipped with a displacement sensor and a lifting mechanism. The lifting mechanism includes a lifting cylinder. The lower end of the lifting shaft of the lifting cylinder is provided with a translation beam. The translation beam is arranged parallel to the feeding conveyor belt. Several negative pressure suction cups are evenly distributed along the length direction on the bottom surface of the translation beam. The top of each negative pressure suction cup is connected to a vacuum pump through an air supply pipe.

[0013] As a further embodiment of the present invention, the sequence control component includes a sequence control stop bar arranged laterally along the surface of the discharge conveyor belt in a free state. Sequence control stops are provided on both sides of the discharge conveyor belt where the sequence control stop bar is located. A right-angle bracket is provided at one end of the sequence control stop bar. The sequence control stop bar is hinged to the upper end of the right-angle bracket. A return spring is provided between the sequence control stop bar and the right-angle bracket. A pressure roller is provided at the free end of the sequence control stop bar that is tangential to the face of the linear profile. The unidirectional movement of the linear profile pushes the sequence control stop bar to rotate along the hinge point. Under the tension of the return spring, the linear profile is subjected to the force of the pressure roller and moves forward close to the sequence control stops. When the linear profile stops at the gripping point, the two sequence control components are located at both ends of the linear profile.

[0014] As a further embodiment of the present invention, a straightening component is also provided near the sequence control component. The straightening component includes a straightening cylinder arranged perpendicular to the conveyor belt. A straightening wheel is provided at the telescopic shaft end of the straightening cylinder. A flexible contact layer is provided on the surface of the straightening wheel. By extending or retracting the telescopic shaft, the flexible contact layer of the straightening wheel is driven to contact or separate from the surface of the linear profile.

[0015] As a further embodiment of the present invention, a plurality of sensing probes are evenly distributed along the same side edge of the feeding conveyor belt and the discharging conveyor belt. The sensing probes sense the position of the linear profile in real time and transmit the information to the controller. The controller is connected to the laser profiler, the sequential control component, the straightening component, the displacement sensor, the lifting cylinder, the vacuum pump, the feeding motor, and the discharging motor.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention includes a feeding device and a discharging and sorting device arranged in a straight line and separated from each other. A laser detection channel is provided between the feeding device and the discharging and sorting device. The laser detection channel includes an annular support. A plurality of laser profilometers are arranged circumferentially on the inner wall of the annular support. The linear profile steps through the laser detection channel axially. Each laser profilometer is aligned with each facet of the linear profile in turn. As the linear profile passes through the laser detection channel in turn, each facet along the length direction of the linear profile is detected simultaneously during the uniform motion of the linear profile, or one facet is selectively detected.

[0017] The laser profilometer is connected to a controller, which monitors defects on all surfaces of the profile in real time and feeds them back to the controller for coordinated control of other components.

[0018] The linear profiles are fed uniformly from the feeding device towards the sorting device. A laser profilometer selectively scans each facet of the profile for surface defects. Qualified profiles are transferred along the sorting gantry, while defective profiles continue to be transferred along the discharge conveyor belt, achieving precise sorting. A set of sequential control components is also installed on one side of the feeding device to ensure the linear profiles maintain a straight-line movement. These components guide the profiles along their movement path, facilitating positioning and effective gripping. Other advantages include: (1) The feeding device includes a feeding conveyor belt, which works in conjunction with a trolley transfer device and a negative pressure gripping component installed on the feeding gantry to achieve efficient and accurate feeding.

[0019] (2) The discharge sorting device, together with the trolley transfer device and the negative pressure gripping component installed on the feeding gantry, achieves efficient and accurate discharge and sorting.

[0020] (3) The negative pressure gripping component achieves lateral displacement through a truss slider, and the truss slider is equipped with a displacement sensor and a lifting mechanism to achieve longitudinal displacement. Multiple linear profiles are automatically stacked by gripping with a negative pressure suction cup.

[0021] (4) The sequential control component includes a sequential control baffle that is arranged laterally along the surface of the discharge conveyor belt in a free state to control the movement trajectory of the linear profile and perform precise sorting.

[0022] (5) A regularization component is also provided near the sequential control component to interfere with the linear profile in real time, ensuring that the linear profile always maintains a straight line movement throughout the process and does not deviate in direction.

[0023] (6) The position of the linear profile is sensed in real time by the sensing probe and transmitted to the controller. The controller receives and controls the laser profiler, the sequential control component, the straightening component, the displacement sensor, the lifting cylinder, the vacuum pump, the feeding motor and the discharge motor to achieve automatic coordination of each component in real time. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall assembly of the present invention; Figure 2 This is the front view of the present invention; Figure 3 This is a top view of the present invention; Figure 4 This is a side view of the present invention; Figure 5 This is a partial schematic diagram of the present invention.

[0025] In the diagram: 1-Feeding device, 101-Feeding conveyor belt, 2-Trolley transfer device, 201-Transfer trolley, 202-Wheel, 203-Transfer track, 3-Negative pressure gripping assembly, 301-Transfer beam, 302-Negative pressure suction cup, 303-Lifting cylinder, 304-Displacement sensor, 305-Tunnel slider, 4-Feeding truss, 5-Sensing probe, 6-Sorting assembly, 601-Sorting cylinder, 602-Sorting wheel, 7-Laser detection channel, 701-Ring bracket, 702-Laser profilometer, 8-Sequencing control assembly, 801-Right angle bracket, 802-Sequencing control stop bar, 803-Pressure roller, 804-Sequencing control side guard, 805-Reset spring, 9-Sorting truss, 10-Controller, 11-Output sorting device, 1101-Output conveyor belt, 12-Linear profile. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0027] See appendix Figure 1 -Appendix Figure 5 A linear profile inspection and sorting system includes a feeding device 1 and a discharge sorting device 11 arranged in a straight line and separated from each other. The feeding device includes a feeding conveyor belt 101. The side of the feeding conveyor belt near the discharge sorting device is designated as the active end, which is equipped with an active roller. A feeding motor is provided on one side of the active roller, and a driven end is provided on the other side, which is equipped with a driven roller. When the feeding motor is started, the driven end of the feeding conveyor belt moves at a constant speed toward the discharge sorting device.

[0028] The feeding device 1 is equipped with a trolley transfer device 2 on the loading side. The trolley transfer device includes a transfer track 203 arranged parallel to the feeding device, and several transfer trolleys 201 are arranged on the transfer track. Each transfer trolley includes a loading body and wheels 202 arranged below the loading body. The wheels roll in cooperation with the transfer track. Several layers of linear profiles 12 are stacked inside the loading body. The linear profiles are wooden strips or other profiles that can be adsorbed and transferred. The axial direction of the linear profiles is parallel to the feeding conveyor belt. The linear profiles to be tested are pre-stacked in the loading body, and the transfer trolleys are transferred along the transfer track to the location of the feeding device.

[0029] The feeding conveyor belt 101 and the transfer trolley 201 are vertically provided with a feeding truss 4, and the feeding truss is provided with a reciprocating negative pressure gripping component 3 along its length.

[0030] The negative pressure gripping component 3 includes a truss slider that is slidably coupled with the truss. The truss slider is equipped with a displacement sensor 304 and a lifting mechanism. The lifting mechanism includes a lifting cylinder 303. The lower end of the lifting shaft of the lifting cylinder is equipped with a translation beam 301. The translation beam is arranged parallel to the feeding conveyor belt. Several negative pressure suction cups 302 are evenly distributed along the length of the bottom surface of the translation beam. Each negative pressure suction cup is connected to a vacuum pump through an air supply pipe.

[0031] The truss slider is equipped with a slider motor that, when started, drives the truss slider to move towards the first line profile to be inspected, until it is directly above this line profile.

[0032] Next, the lifting cylinder 303 is activated to drive the lifting shaft to move downwards. At the same time, the vacuum pump is activated. When the surface of the negative pressure suction cup 302 contacts the surface of the linear profile, the lifting cylinder stops moving.

[0033] The vacuum pump continuously generates negative pressure, and the negative pressure suction cups adsorb the linear profiles under negative pressure. Based on the adsorption force and the weight of the linear profiles, the number of negative pressure suction cups to be installed is calculated to ensure that the negative pressure suction cups can completely and stably adsorb the linear profiles.

[0034] Reactivate the lifting cylinder to move the linear profile upwards. Once it reaches a certain height, the lifting cylinder stops moving.

[0035] The slider motor starts, driving the truss slider to move along the feeding truss towards the feeding conveyor belt. When the linear profile is transferred to the top of the feeding conveyor belt, the lifting cylinder is activated, driving the lifting shaft to move downward.

[0036] When the linear profile comes into contact with the feeding conveyor belt, the vacuum pump is turned off, the linear profile separates from the negative pressure suction cup, and is moved by the feeding conveyor belt. Several sensing probes 5 are evenly distributed on the same side edge of the feeding conveyor belt 101 and the discharge conveyor belt 1101. The sensing probes sense the position of the linear profile in real time and transmit the information to the controller 10.

[0037] A laser detection channel 7 is provided between the feeding device and the discharging and sorting device. The laser detection channel includes a ring support 701. Four laser profilometers 702 are provided circumferentially on the inner wall of the ring support. The linear profile steps through the laser detection channel axially. Each laser profilometer is aligned with each facet of the linear profile in turn. The linear profile has four facets.

[0038] The discharge sorting device 11 includes a discharge conveyor belt 1101 arranged in a straight line with the feeding conveyor belt. The discharge conveyor belt moves at the same speed as the feeding conveyor belt. The end of the discharge conveyor belt near the feeding device is designated as the driven end, and the driven end is provided with a driven wheel. The other end of the discharge conveyor belt is designated as the active end, and the active end is provided with an active wheel. A discharge motor is provided on the side of the active wheel. The discharge motor and the feeding motor start simultaneously. A gap is provided between the discharge conveyor belt and the feeding conveyor belt for the installation of a laser detection channel. The linear profile moves synchronously with the feeding conveyor belt. During the continuous movement, one end first enters the laser detection channel. The laser profilometer selectively scans the surface defects of each edge of the linear profile.

[0039] Depending on the needs of on-site testing, one or more laser profilometers can be turned on to inspect one of the edges of the linear profile.

[0040] The laser profilometer can also be used to inspect each facet of the linear profile. Four laser profilometers 702 can work simultaneously to sequentially inspect the entire surface of each facet of the linear profile.

[0041] The laser profilometer 702 is connected to the controller 10, which transmits the detection results to the controller. The linear profile is fed at a constant speed along the feeding device toward the discharge sorting device. The laser profilometer 702 simultaneously scans the surface defects of each facet of the linear profile. The controller controls the sorting based on the surface defect scanning results fed back by the laser profilometer. Qualified products are transferred along the sorting truss, while unqualified products continue to be transferred along the discharge conveyor belt.

[0042] The discharge conveyor belt 1101 is set to correspond to one of the transfer trolleys on the transfer track. When the linear profile is detected as a qualified product, and the linear profile moves to the position where the discharge conveyor belt is directly opposite the transfer trolley, a positioning stop bar is provided. The positioning stop bar falls down to block the linear profile and stop its movement.

[0043] A sorting truss 9 is vertically installed above the discharge conveyor belt and the transfer trolley. The sorting truss is equipped with a reciprocating negative pressure gripping component 3 along its length.

[0044] The negative pressure gripping component 3 includes a truss slider 305 that is slidably coupled with the truss. The truss slider is equipped with a displacement sensor 304 and a lifting mechanism. The lifting mechanism includes a lifting cylinder 303. The lower end of the lifting shaft of the lifting cylinder is equipped with a translation beam 301. The translation beam is arranged parallel to the feeding conveyor belt. Several negative pressure suction cups 302 are evenly distributed along the length of the bottom surface of the translation beam. Each negative pressure suction cup is connected to a vacuum pump through an air supply pipe.

[0045] The truss slider is equipped with a slider motor. When the slider motor is activated, it drives the truss slider 305 to move towards the first qualified linear profile to be inspected, until it is directly above the linear profile. Just then, the positioning stop bar drops down, blocking the linear profile and stopping its movement.

[0046] Next, the lifting cylinder 303 is activated to drive the lifting shaft to move downwards. At the same time, the vacuum pump is activated. When the surface of the negative pressure suction cup 302 contacts the surface of the linear profile, the lifting cylinder stops moving.

[0047] The vacuum pump continuously generates negative pressure, and the negative pressure suction cup 302 adsorbs the linear profile under negative pressure. Based on the adsorption force and the weight of the linear profile, the number of negative pressure suction cups to be installed is calculated to ensure that the negative pressure suction cups can completely and stably adsorb the linear profile.

[0048] Reactivate the lifting cylinder to move the linear profile upwards. Once it reaches a certain height, the lifting cylinder stops moving.

[0049] The slider motor starts, driving the truss slider to move along the discharge truss towards the discharge conveyor belt. When the linear profile is transferred to the top of the transfer trolley on one side of the discharge conveyor belt, the lifting cylinder is activated, driving the lifting shaft to move downward.

[0050] Several sensing probes 5 are evenly distributed along the same side edge of the feeding conveyor belt 101 and the discharging conveyor belt 1101. The sensing probes sense the position of the linear profile in real time and transmit the information to the controller.

[0051] When the linear profile 12 contacts the bottom surface of the loading vehicle, the vacuum pump is turned off, the linear profile separates from the negative pressure suction cup 302, and the linear profile is loaded into the loading vehicle. Each qualified linear profile is stacked in sequence until all the linear profiles are stacked to the preset height. Example 2

[0052] See appendix Figure 1 On one side of the feeding device, there is also a set of sequential control components 8 to control the linear profile to always keep it moving in a straight line.

[0053] The sequential control component 8 includes a sequential control stop bar 802 that is horizontally arranged along the surface of the discharge conveyor belt in a free state. Sequential control side rails 804 are provided on both sides of the discharge conveyor belt where the sequential control stop bar is located. A right-angle bracket 801 is provided at one end of the sequential control stop bar. The sequential control stop bar is hinged to the upper end of the right-angle bracket. A return spring 805 is provided between the sequential control stop bar and the right-angle bracket. A pressure roller 803 is provided at the free end of the sequential control stop bar that is tangential to the face of the linear profile 12. The unidirectional movement of the linear profile pushes the sequential control stop bar to rotate along the hinge point. Under the tension of the return spring, the linear profile is subjected to the force of the pressure roller and moves forward close to the sequential control side rail. When the linear profile stops at the gripping point, the two sequential control components are located at both ends of the linear profile.

[0054] The two lateral control components and the lateral control guard on the opposite side work together to limit the lateral displacement of the linear profile. Example 3

[0055] See appendix Figure 1 Near the sequence control component 8, there is also a straightening component 6. The straightening component 6 includes a straightening cylinder 601 that is perpendicular to the conveyor belt. The end of the extension shaft of the straightening cylinder is provided with a straightening wheel 602. The surface of the straightening wheel is provided with a flexible contact layer. By extending or retracting the extension shaft, the flexible contact layer of the straightening wheel is driven to contact or separate from the surface of the linear profile 12.

[0056] Depending on the actual situation, activate the regulating cylinder 601 to extend or retract the telescopic shaft. Adjust the contact position between the regulating wheel and the surface of the profile accordingly.

[0057] Throughout the automated sorting process, the controller 10 is communicatively connected to the laser profilometer 702, the sequential control component, the grading component, the displacement sensor, the lifting cylinder, the vacuum pump, the feeding motor, and the discharging motor. The controller coordinates the operation of the laser profilometer, the sequential control component, the grading component, the displacement sensor, the lifting cylinder, the vacuum pump, the feeding motor, and the discharging motor.

[0058] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0059] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A linear profile inspection and sorting system, characterized in that: The device includes a feeding device (1) and a sorting device (11) arranged in a straight line and separated from each other. A laser detection channel (7) is provided between the feeding device and the sorting device. The laser detection channel includes a ring support (701). Several laser profilers (702) are arranged circumferentially on the inner wall of the ring support. The linear profiles step through the laser detection channel along the axial direction. Each laser profiler faces each edge of the linear profile in turn. The laser profilers are connected to a controller (10). The linear profiles are fed at a constant speed from the feeding device to the sorting device. The laser profilers selectively scan the surface defects of each edge of the linear profiles. Qualified products are transferred along the sorting truss direction, and unqualified products continue to be transferred along the discharge direction of the discharge conveyor belt. A set of sequential control components is also provided on one side of the feeding device to control the linear profiles to always maintain a straight line movement.

2. The linear profile inspection and sorting system according to claim 1, characterized in that: The feeding device (1) includes a feeding conveyor belt (101). The side of the feeding conveyor belt closest to the discharge sorting device is designated as the active end. The active end is equipped with an active roller. A feeding motor is provided on one side of the active roller, and the other side is designated as the driven end. The driven end is equipped with a driven roller. The driven end of the feeding conveyor belt moves at a constant speed toward the discharge sorting device.

3. The linear profile inspection and sorting system according to claim 2, characterized in that: The feeding device (1) is provided with a trolley transfer device (2) on the feeding side. The trolley transfer device includes a transfer track (203) arranged parallel to the feeding device. Several transfer trolleys (201) are provided on the transfer track. The transfer trolley includes a loading body and wheels (202) arranged below the loading body. The wheels and the transfer track roll together. Several layers of linear profiles (12) are stacked inside the loading body. The axial direction of the linear profiles is parallel to the feeding conveyor belt.

4. The linear profile inspection and sorting system according to claim 3, characterized in that: The feeding conveyor belt (101) is vertically provided above the transfer trolley with a feeding truss (4), and the feeding truss is provided with a reciprocating negative pressure gripping component (3) along its length.

5. The linear profile inspection and sorting system according to claim 4, characterized in that: The discharge sorting device (11) includes a discharge conveyor belt (1101) arranged in a straight line with the feeding conveyor belt. The end of the discharge conveyor belt near the feeding device is set as the driven end, and the driven end is provided with a driven wheel. The other end of the discharge conveyor belt is set as the active end, and the active end is provided with an active wheel. A discharge motor is provided on the side of the active wheel. A gap is provided between the discharge conveyor belt and the feeding conveyor belt for the installation of the laser detection channel. The discharge conveyor belt is set in correspondence with one of the transfer trolleys on the transfer track. A sorting truss (9) is provided vertically above the discharge conveyor belt and the transfer trolley. A reciprocating negative pressure gripping component (3) is provided along the length direction of the sorting truss.

6. The linear profile inspection and sorting system according to claim 4 or 5, characterized in that: The negative pressure gripping component (3) includes a truss slider (305) that is slidably coupled with the truss. The truss slider is equipped with a displacement sensor (304) and a lifting mechanism. The lifting mechanism includes a lifting cylinder (303). The lower end of the lifting shaft of the lifting cylinder is provided with a translation beam (301). The translation beam is arranged parallel to the feeding conveyor belt. Several negative pressure suction cups (302) are evenly distributed on the bottom surface of the translation beam along the length direction. Each negative pressure suction cup is connected to a vacuum pump through an air supply pipe.

7. The linear profile inspection and sorting system according to claim 1, characterized in that: The sequential control component (8) includes a sequential control stop bar (802) arranged laterally along the surface of the discharge conveyor belt in a free state. Sequential control side rails (804) are provided on both sides of the discharge conveyor belt where the sequential control stop bar is located. A right-angle bracket (801) is provided at one end of the sequential control stop bar. The sequential control stop bar is hinged to the upper end of the right-angle bracket. A reset spring (805) is provided between the sequential control stop bar and the right-angle bracket. A pressure roller (803) is provided at the free end of the sequential control stop bar that is tangential to the face of the linear profile. The unidirectional movement of the linear profile pushes the sequential control stop bar to rotate along the hinge point. Under the tension of the reset spring, the linear profile is subjected to the force of the pressure roller and moves forward close to the sequential control side rail. When the linear profile stops at the gripping point, the two sequential control components are located at both ends of the linear profile.

8. The linear profile inspection and sorting system according to claim 7, characterized in that: Near the sequence control component (8), there is also a straightening component. The straightening component includes a straightening cylinder (601) that is perpendicular to the conveyor belt. The end of the extension shaft of the straightening cylinder is provided with a straightening wheel (602). The surface of the straightening wheel is provided with a flexible contact layer. By extending or retracting the extension shaft, the flexible contact layer of the straightening wheel is driven to contact or separate from the surface of the linear profile.

9. The linear profile inspection and sorting system according to claim 6 or 8, characterized in that: Several sensing probes (5) are evenly distributed along the same side edge of the feeding conveyor belt and the discharging conveyor belt. The sensing probes sense the position of the linear profile in real time and transmit the information to the controller (10). The controller is connected to the laser profiler, the sequential control component, the straightening component, the displacement sensor, the lifting cylinder, the vacuum pump, the feeding motor and the discharging motor.

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