Automatic detection system for stainless steel pipe finished products

Abstract

A stainless steel pipe finished product automatic detection system disclosed by the present invention comprises a conveying module, a detection module and a sorting module, the tail end of the conveying module and the starting end of the sorting module form a detection station, and a three-dimensional moving support of the detection module is arranged above the detection station in a crossing manner. The steel pipe is conveyed to a detection station through a roller way assembly of the conveying module. The detection module drives a multi-degree-of-freedom detection head through a three-dimensional moving support to conduct all-dimensional detection on the steel pipe, the sorting module pushes defective products into a defective product temporary storage bin through a pneumatic push rod according to the detection result, qualified products continue to be conveyed along a main sliding way, transportation is convenient, and detection is comprehensive.

Description

Technical Field

[0001] The present invention relates to the technical field of manufacturing machine tools, and specifically relates to an automatic detection system for finished stainless steel pipes. Background Art

[0002] Stainless steel pipes are hollow long round steel materials, mainly widely used in industrial conveying pipelines such as petroleum, chemical industry, medical treatment, food, light industry, and mechanical instruments, as well as mechanical structure components, etc. In addition, when the bending and torsional strength are the same, the weight is lighter, so it is also widely used in the manufacture of mechanical parts and engineering structures. The current commonly used quality detection technologies in the industry have the following technical bottlenecks: using fixed-spacing roller tracks for conveying, it is difficult to adapt to the pipe diameter change range of Φ20 - Φ300mm, resulting in problems such as easy deviation of small-diameter pipes and jamming of large-diameter pipes. The single-sensor detection mode (such as only using vision or ultrasonic detection) leads to insufficient defect detection rate, and the impact force control of the pneumatic sorting mechanism is inaccurate (error > 15%), causing secondary damage to the pipe surface. Summary of the Invention

[0003] The purpose of the present invention is to provide an automatic detection system for finished stainless steel pipes to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: An automatic detection system for finished stainless steel pipes, comprising:

[0005] A conveying module, which includes a roller track assembly with adjustable spacing, a driving motor, and a steel pipe positioning mechanism. The roller track assembly with adjustable spacing, the driving motor, and the steel pipe positioning mechanism of the conveying module are horizontally installed on one side of the working platform;

[0006] A detection module, which consists of a three-dimensional moving bracket, a multi-degree-of-freedom detection head, and a sensor array mounting base. Both the multi-degree-of-freedom detection head and the sensor array mounting base are installed on the three-dimensional moving bracket for movement;

[0007] A sorting module, which is provided with a pneumatic push rod actuator, a diversion guide chute, and a defective product buffer bin. The pneumatic push rod actuator, the diversion guide chute, and the defective product buffer bin on the sorting module are horizontally installed on the other side of the working platform;

[0008] Among them, the end of the conveying module and the beginning of the sorting module form a detection station, and the three-dimensional moving bracket of the detection module straddles above the detection station.

[0009] As a further scheme of the present invention:

[0010] The roller track assembly includes: at least three groups of parallel arranged driving rollers and driven rollers. The spacing adjustment mechanism is connected to the driving rollers and the driven rollers through a worm and gear transmission device. The roller surfaces of the driving rollers and the driven rollers are provided with V-shaped guide grooves, and elastic buffer layers are embedded in the grooves.

[0011] As a further solution of the present invention:

[0012] The steel pipe positioning mechanism includes: limit baffles arranged symmetrically on both sides, a gear-rack driving device. The two-sided limit baffles drive the racks to move horizontally in opposite directions through cylinders respectively, and the gears drive the baffles to move relatively to achieve synchronous opening and closing. A pressure sensor array is provided on the inner surface of the limit baffles.

[0013] As a further solution of the present invention:

[0014] The three-dimensional moving bracket includes: a gantry frame, an X-axis linear guide is arranged at the bottom of the gantry frame, a Y-axis moving cross beam is arranged on the X-axis linear guide, a Z-axis lifting platform is slidably installed on the Y-axis moving cross beam, and a rotary adjustment table is installed on the Z-axis lifting platform. An angle adjustment mechanism is provided on the rotary adjustment table for adjusting the angle between the Z-axis lifting platform and the rotary adjustment table.

[0015] As a further solution of the present invention:

[0016] The multi-degree-of-freedom detection head includes: a laser rangefinder, an industrial camera and an ultrasonic probe coaxially installed. A pneumatic dust removal nozzle is provided on the housing of the multi-degree-of-freedom detection head. The coaxially installed laser rangefinder, industrial camera and ultrasonic probe are fixed on the rotary adjustment table through a quick-release mounting seat.

[0017] As a further solution of the present invention:

[0018] The pneumatic push rod actuator includes: a double-acting cylinder. An adaptive chuck is provided at the end of the cylinder push rod of the double-acting cylinder. A composite material layer with different friction coefficients is coated on the surface of the adaptive chuck. A buffer and shock absorption device is provided at the end of the stroke of the cylinder push rod.

[0019] As a further solution of the present invention:

[0020] The shunt guiding slideway includes: a Y-shaped bifurcation structure formed by a main slideway and a defective product slideway and a shunt switch. The shunt switch is connected to the pneumatic push rod actuator through a pneumatic push rod. Wear-resistant lining plates that can be replaced are provided on the inner wall of the shunt guiding slideway.

[0021] As a further solution of the present invention:

[0022] The defective product buffer bin includes: a multi-layer drawer-type storage rack. A weight sensing platform and anti-rolling limit strips are provided on each layer. A shock absorption spring group is installed at the bottom of the bin body of the defective product buffer bin.

[0023] As a further solution of the present invention:

[0024] The sensor array mounting base includes: a circular frame and a number of uniformly distributed mounting points on the circular frame. Each mounting point is provided with a universal adjustment cloud platform and a locking mechanism, and a calibration reference ball is provided at the center of the circular frame.

[0025] As a further solution of the present invention:

[0026] All the above modules achieve coordinated actions through a mechanical linkage device. The mechanical linkage device includes: a cam drive shaft connecting the conveying module and the sorting module, a synchronous belt drive mechanism coordinating the movement of the detection module and the triggering of the sensor, and a mechanical position feedback device arranged at the motion node.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] When the present invention is in use, on the existing basis, the steel pipe is transported to the detection station through the roller way assembly of the conveying module. The detection module drives the multi-degree-of-freedom detection head through the three-dimensional moving bracket to perform a comprehensive detection on the steel pipe. According to the detection results, the sorting module uses the pneumatic push rod to push the defective products into the defective product buffer bin, and the qualified products continue to be conveyed along the main slideway, which is convenient for transportation and comprehensive in detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0030] Figure 2 It is a schematic diagram of the conveying module, detection module, and sorting module of the present invention.

[0031] Figure 3 It is a schematic diagram of the structure of the defective product buffer bin of the present invention.

[0032] In the figure: 100, conveying module; 200, detection module; 300, sorting module; 110, adjustable-spacing roller way assembly; 120, drive motor; 210, three-dimensional moving bracket; 220, multi-degree-of-freedom detection head; 230, sensor array mounting base; 310, pneumatic push rod actuator; 320, shunt guiding slideway; 330, defective product buffer bin. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] Please refer to Figures 1 to 3, in the embodiment of the present invention, an automatic detection system for stainless steel pipe products includes: a conveying module 100, which includes a roller track assembly 110 with adjustable spacing, a driving motor 120 and a steel pipe positioning mechanism. The roller track assembly 110 with adjustable spacing, the driving motor 120 and the steel pipe positioning mechanism of the conveying module 100 are horizontally installed on one side of the working platform; a detection module 200, which is composed of a three-dimensional moving bracket 210, a multi-degree-of-freedom detection head 220 and a sensor array mounting base 230. The multi-degree-of-freedom detection head 220 and the sensor array mounting base 230 are both installed on the three-dimensional moving bracket 210 for movement; a sorting module 300, which is provided with a pneumatic push rod actuator 310, a diversion guiding chute 320 and a defective product buffer bin 330. The pneumatic push rod actuator 310, the diversion guiding chute 320 and the defective product buffer bin 330 on the sorting module 300 are horizontally installed on the other side of the working platform; wherein, the end of the conveying module 100 and the beginning of the sorting module 300 form a detection station, and the three-dimensional moving bracket of the detection module 200 straddles above the detection station.

[0035] The steel pipe is transported to the detection station through the roller track assembly 110 of the conveying module 100. The detection module 200 drives the multi-degree-of-freedom detection head 220 through the three-dimensional moving bracket 210 to perform a full-range detection on the steel pipe. According to the detection result, the sorting module 300 uses the pneumatic push rod 310 to push the defective products into the defective product buffer bin 330, and the qualified products continue to be conveyed along the main chute.

[0036] The roller track assembly 110 includes: at least three groups of active rollers and driven rollers arranged in parallel. The spacing adjustment mechanism 110 is connected to the active rollers and the driven rollers through a worm and gear transmission device. The roller surfaces of the active rollers and the driven rollers are provided with V-shaped guiding grooves, and elastic buffer layers are embedded in the grooves.

[0037] The worm and gear transmission adjusts the spacing between the active roller and the driven roller. The V-shaped groove fits the surface of the steel pipe to facilitate the transportation of the steel pipe. The elastic buffer layer absorbs the vibration during the movement of the steel pipe, avoids surface scratches, and at the same time sets multiple groups of active rollers to prevent jamming during the transportation process.

[0038] The steel pipe positioning mechanism includes: limit baffles arranged symmetrically on both sides, a gear and rack drive device. The bilateral limit baffles are respectively driven by cylinders to move horizontally in opposite directions. The gears drive the baffles to move relatively to achieve synchronous opening and closing. The inner surfaces of the limit baffles are provided with a pressure sensor array.

[0039] The baffle driving cylinder synchronously closes the limit baffles through the gear and rack. The cylinder drives the gear to move on the rack. When the gear moves, the pressure sensor array feeds back the clamping force signal to prevent overpressure or positioning deviation.

[0040] The three-dimensional moving support 210 includes: a gantry frame, an X-axis linear guide is provided at the bottom end of the gantry frame, a Y-axis moving crossbeam is provided on the X-axis linear guide, a Z-axis lifting platform is slidably installed on the Y-axis moving crossbeam, and a rotary adjustment table is installed on the Z-axis lifting platform. An angle adjustment mechanism is provided on the rotary adjustment table for adjusting the angle between the Z-axis lifting platform and the rotary adjustment table.

[0041] Achieve precise three-dimensional positioning and angle adjustment of the detection head. Move the detection head to the target area along the X / Y-axis guides, adjust the detection distance by lifting the Z-axis, and adjust the tilt angle of the detection head with the rotary adjustment table to adapt to the curved surface of the steel pipe.

[0042] The multi-degree-of-freedom detection head 220 includes: a laser rangefinder, an industrial camera, and an ultrasonic probe coaxially installed. An air dust removal nozzle is provided on the housing of the multi-degree-of-freedom detection head 220, and the coaxially installed laser rangefinder, industrial camera, and ultrasonic probe are fixed on the rotary adjustment table through a quick-release mounting seat.

[0043] Integrate multi-sensor detection capabilities to improve the comprehensiveness of defect identification; the air dust removal nozzle cleans the surface of the steel pipe to ensure detection accuracy; the laser rangefinder measures dimensions, the industrial camera captures surface defects, and the ultrasonic probe detects internal cracks; the quick-release mounting seat supports the rapid replacement of the sensor combination.

[0044] The pneumatic push rod actuator 310 includes: a double-acting cylinder, an adaptive chuck is provided at the end of the cylinder push rod of the double-acting cylinder, a composite material layer with different friction coefficients is coated on the surface of the adaptive chuck, and a buffer and shock-absorbing device is provided at the end of the stroke of the cylinder push rod.

[0045] Perform reliable sorting to prevent the steel pipe from slipping or being damaged. The double-acting cylinder drives the adaptive chuck to clamp the steel pipe. The composite material layer provides different friction forces. The buffer and shock-absorbing device absorbs the impact at the end of the push rod and reduces noise.

[0046] The diversion guide chute 320 includes: a Y-shaped bifurcation structure formed by a main chute and a defective product chute and a diversion switch. The diversion switch is connected to the pneumatic push rod actuator 310 through a pneumatic push rod, and replaceable wear-resistant liners are provided on the inner wall of the chute of the diversion guide chute 320.

[0047] Realize dynamic switching of the sorting path and extend the service life of the chute. The diversion switch changes the chute direction through a linkage mechanism. Defective products enter the defective product chute. The replaceable wear-resistant liners reduce chute wear and adapt to high-frequency sorting.

[0048] The defective product buffer bin 330 includes: a multi-layer drawer-type storage rack, a weight sensing platform and anti-rolling limit strips are provided on each layer, and a shock-absorbing spring group is installed at the bottom of the bin body of the defective product buffer bin 330.

[0049] Safely store defective products and monitor the inventory in real time. The defective products slide into the multi-layer drawer-type storage rack. The anti-rolling limit bars fix the positions of the steel pipes. The weight-sensing platform records the weight of the defective products at each layer. When overweight, an alarm is triggered. The shock-absorbing spring group buffers the impact of the steel pipe sliding.

[0050] The mounting base 230 of the sensor array includes: an annular frame and a number of mounting points evenly distributed on the annular frame. Each mounting point is provided with a universal adjustment cloud platform and a locking mechanism. A calibration reference ball is provided at the center of the annular frame.

[0051] To ensure the flexible calibration and high-precision detection of the sensor array, the universal adjustment cloud platform adjusts the angle of the sensor, the locking mechanism fixes the position, and the calibration reference ball is used as a reference point for regular sensor calibration.

[0052] All the above modules achieve coordinated actions through a mechanical linkage device. The mechanical linkage device includes: a cam transmission shaft connecting the conveying module and the sorting module, a synchronous belt transmission mechanism coordinating the movement of the detection module and the triggering of the sensor, and a mechanical position feedback device arranged at the motion node.

[0053] Coordinate the action timing of multiple modules and improve the system synchronization. The cam transmission shaft synchronizes the action rhythms of the conveying module and the sorting module. The synchronous belt transmission mechanism ensures the linkage between the movement of the detection head and the sensor trigger signal. The mechanical position feedback device monitors the motion node in real time to avoid mechanical interference.

[0054] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention, and any reference signs in the claims should not be regarded as limiting the claims involved.

[0055] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only includes an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automated inspection system for finished stainless steel pipes, characterized in that, Including: A conveying module (100), comprising a roller path assembly (110) with adjustable spacing, a driving motor (120) and a steel pipe positioning mechanism. The roller path assembly (110) with adjustable spacing, the driving motor (120) and the steel pipe positioning mechanism of the conveying module (100) are horizontally installed on one side of the working platform; A detection module (200), composed of a three-dimensional moving bracket (210), a multi-degree-of-freedom detection head (220) and a sensor array mounting base (230). The multi-degree-of-freedom detection head (220) and the sensor array mounting base (230) are both installed on the three-dimensional moving bracket (210) for movement; A sorting module (300), provided with a pneumatic push rod actuator (310), a diversion guide chute (320) and a defective product buffer bin (330). The pneumatic push rod actuator (310), the diversion guide chute (320) and the defective product buffer bin (330) on the sorting module (300) are horizontally installed on the other side of the working platform; Among them, the end of the conveying module (100) and the start end of the sorting module (300) form a detection station, and the three-dimensional moving bracket of the detection module (200) straddles above the detection station.

2. The automated inspection system for finished stainless steel pipes according to claim 1, characterized in that The roller path assembly (110) includes: at least three groups of active rollers and driven rollers arranged in parallel. The spacing adjustment mechanism (110) is connected to the active rollers and the driven rollers through a worm and gear transmission device. The roller surfaces of the active rollers and the driven rollers are provided with V-shaped guide grooves, and elastic buffer layers are embedded in the grooves.

3. An automated inspection system for finished stainless steel pipes according to claim 2, characterized in that, The steel pipe positioning mechanism includes: limit baffles arranged symmetrically on both sides, a gear and rack driving device. The two-sided limit baffles are respectively driven by cylinders to move horizontally in opposite directions, and the gears drive the baffles to move relatively to achieve synchronous opening and closing. A pressure sensor array is provided on the inner surface of the limit baffles.

4. An automated inspection system for stainless steel pipe finished products according to claim 1, characterized in that, The three-dimensional moving bracket (210) includes: a gantry frame. An X-axis linear guide rail is provided at the bottom end of the gantry frame, and a Y-axis moving cross beam is arranged on the X-axis linear guide rail. A Z-axis lifting platform is slidably installed on the Y-axis moving cross beam, and a rotary adjustment table is installed on the Z-axis lifting platform. An angle adjustment mechanism is provided on the rotary adjustment table for adjusting the angle between the Z-axis lifting platform and the rotary adjustment table.

5. An automated inspection system for stainless steel pipe finished products according to claim 4, characterized in that, The multi-degree-of-freedom detection head (220) includes: a laser rangefinder, an industrial camera and an ultrasonic probe coaxially installed. A pneumatic dust removal nozzle is provided on the housing of the multi-degree-of-freedom detection head (220). The coaxially installed laser rangefinder, industrial camera and ultrasonic probe are fixed on the rotary adjustment table through a quick-release mounting seat.

6. The automated inspection system for stainless steel pipe finished products according to claim 1, wherein, The pneumatic push rod actuator (310) includes: a double-acting cylinder. An adaptive chuck is provided at the end of the cylinder push rod of the double-acting cylinder. The surface of the adaptive chuck is coated with a composite material layer with different friction coefficients. A buffer and shock absorption device is provided at the end of the stroke of the cylinder push rod.

7. An automated inspection system for stainless steel pipe finished products according to claim 1, characterized in that, The diversion guide chute (320) includes: a Y-shaped bifurcation structure formed by a main chute and a defective product chute and a diversion switch. The diversion switch is connected to the pneumatic push rod actuator (310) through a pneumatic push rod. Wear-resistant liners that can be replaced are provided on the inner wall of the diversion guide chute (320).

8. An automated inspection system for finished stainless steel pipes according to claim 1, characterized in that, The defective product storage bin (330) includes: a multi-layer drawer-type storage rack, with a weight sensing platform and anti-rolling limit strips provided on each layer, and a shock-absorbing spring group is installed at the bottom of the bin body of the defective product storage bin (330).

9. An automated inspection system for finished stainless steel pipes according to claim 1, characterized in that, The sensor array installation base (230) includes: an annular frame and a number of installation points evenly distributed on the annular frame. Each installation point is provided with a universal adjustment cloud platform and a locking mechanism, and a calibration reference ball is provided at the center of the annular frame.

10. An automated inspection system for finished stainless steel pipes according to any one of claims 1-9, characterized in that, The actions of all the above modules are coordinated through a mechanical linkage device. The mechanical linkage device includes: a cam transmission shaft connecting the conveying module and the sorting module, a synchronous belt transmission mechanism coordinating the movement of the detection module and the triggering of the sensor, and a mechanical position feedback device is arranged at the movement nodes.

Images