Automatic detection equipment for bar product quality

Abstract

The invention relates to the technical field of bar detection, and discloses bar product quality automatic detection equipment which comprises a bilateral feeding mechanism, a bar carrying mechanism, a rotary detection mechanism, a discharging mechanism and a sorting mechanism. The rotary detection mechanism comprises a rotary clamping jaw air cylinder and a detection camera, a clamping jaw of the rotary clamping jaw air cylinder is arranged opposite to the bilateral feeding mechanism, a bar supporting unit is arranged on the front side of the clamping jaw and comprises a pair of supporting slender rods, two supporting bases are arranged on the tops of the supporting slender rods, and the supporting bases and the clamping jaw of the rotary clamping jaw air cylinder are horizontally coaxial. The bar supporting unit and the rotary clamping jaw air cylinder are both connected to the rack in a sliding mode. A parallel light source used for supplementing light to the bar is arranged at the bottom of the bar supporting unit. The bar carrying mechanism is located on one side of the rotary detection mechanism and comprises a carrying driving structure and a clamping structure, and the discharging mechanism comprises a discharging driving structure and a pneumatic finger. In practical application, the detection efficiency and the detection quality of the detection equipment are effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of bar material detection, and in particular to an automatic detection device for bar material product quality. Background Art

[0002] Bars are widely used in many fields such as mechanical processing, building structures, aerospace, etc. in industrial production. These fields have strict requirements on the quality and performance of materials, especially surface defects (such as cracks, pits, inclusions, etc.). Surface defects can easily become stress concentration points, causing materials to break or fail under high stress environments, thereby causing equipment failure or safety accidents. Therefore, bar surface defect detection is a key step to ensure product quality and safety.

[0003] At present, mechanized equipment is mostly used for rod inspection. For example, the Chinese patent publication number is CN116273941A, "A fuel rod inspection device and sorting method", the publication number is CN118671081A, "A cylindrical product defect visual automatic inspection system", and the publication number is CN114812683A, "A device for detecting nuclear fuel rod size and appearance defects". These mechanical equipment improves the inspection efficiency and accuracy to a certain extent through automatic loading and unloading and automatic photo inspection. However, there are still some problems with the existing inspection equipment:

[0004] 1. During the bar inspection process, after the bar is placed on the conveyor belt, it usually relies on a transfer fixture or transfer robot to achieve the subsequent handling, clamping and unloading conveying process. Since the transfer fixture or transfer robot has a long travel path, the overall cycle time is long and the continuity is poor, resulting in low inspection efficiency.

[0005] 2. The existing testing equipment has a relatively fixed structure and is difficult to adapt to bar products of different specifications. Every time the product specifications are changed, the entire equipment process needs to be adjusted, including reconfiguring the fixture, adjusting the sensor position, changing the software parameters, etc. This adjustment process is time-consuming and requires professional technicians to operate, which increases the downtime and maintenance costs of the equipment. In addition, the inflexibility of the equipment also limits its use in a variety of application scenarios.

[0006] 3. The shooting environment of bar products is relatively complex, and there are too many structural interferences, resulting in poor shooting quality and inability to effectively detect surface defects of products. Summary of the invention

[0007] The present invention aims to provide an automatic bar product quality detection device to improve the detection efficiency and detection quality of the detection device.

[0008] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an automatic inspection device for the quality of bar products, including a frame, on which are arranged a double-sided feeding mechanism, a bar material handling mechanism, a rotating inspection mechanism, a feeding mechanism and a sorting mechanism; the bar material handling mechanism transfers the bar materials to the rotating inspection mechanism for inspection, and the feeding mechanism transfers the inspected bar materials to the sorting mechanism for qualified sorting; the rotating inspection mechanism includes two rotating jaw cylinders arranged in parallel and a detection camera located above the rotating jaw cylinders, the jaws of the rotating jaw cylinders are arranged opposite to the double-sided feeding mechanism, and the front side of the jaws of the rotating jaw cylinders is A bar support unit is provided, which includes a pair of supporting thin rods, and two support seats are provided on the top of the supporting thin rods. The support seats are horizontally coaxial with the clamping jaws of the rotating clamping jaw cylinder, and the bar support unit and the rotating clamping jaw cylinder are both slidably connected to the frame; a parallel light source for supplementary light to the bar is provided at the bottom of the bar support unit; the bar handling mechanism is located on one side of the rotating detection mechanism, and includes a handling drive structure and a clamping structure, and the handling drive structure drives the clamping structure to perform horizontal and vertical movements; the unloading mechanism includes a unloading drive structure and a pneumatic finger, and the unloading drive structure drives the pneumatic finger to move horizontally.

[0009] The price of a complete set of bar material inspection equipment currently available on the market is usually hundreds of thousands or even millions, which is too expensive. In order to save costs, the applicant conducted independent research and development. In the first-generation version of the automated inspection equipment, the material is automatically loaded through an inclined loading mechanism, and a rotating clamping mechanism is set at the inclined bottom of the loading mechanism. The rotating clamping mechanism directly magnetically clamps the bar material on the loading mechanism and drives the bar material to rotate through a motor to achieve dynamic shooting. After the inspection is completed, the transfer mechanism unloads the material and transports it to the sorting mechanism for sorting. The first-generation inspection equipment realizes automatic loading and unloading and inspection of bar materials. However, when the equipment is performing dynamic shooting, the background structure of the shooting environment is complex due to the very close distance between the loading mechanism, the rotating clamping mechanism and the bar material. There is structural interference, resulting in poor shooting quality, false detection, that is, misjudging non-defective areas as defects, and missed detection, that is, misjudging defective areas as non-defective areas, resulting in low reliability of the inspection structure, requiring manual secondary inspection, and failing to achieve the purpose of improving inspection efficiency.

[0010] Therefore, in response to the above problems, the applicant conducted in-depth research and optimized the equipment structure. In this solution, a bar support unit is set between the double-sided feeding mechanism and the rotating detection mechanism, and a bar handling mechanism is designed as a transfer structure for bar transfer; the bar support unit cooperates with the double-sided feeding mechanism, the rotating detection mechanism and other mechanisms to enable this solution to achieve the following effects:

[0011] 1. The bar support unit of the present invention is arranged at the front side of the jaws of the rotating jaw cylinder, and the jaws of the rotating jaw cylinder are arranged opposite to the double-sided feeding mechanism, so that the bar support unit is also far away from the double-sided feeding mechanism; on the other hand, the bar support unit includes a pair of supporting thin rods, and two supporting seats are provided on the top of the supporting thin rods, so that the overall structure of the bar support unit is simple and occupies a small space. When cooperating with the rotating jaw cylinder to support the bar, the bar is far away from the double-sided feeding mechanism and due to the light rod structure of the supporting thin rods, the influence of the supporting thin rods can be ignored during detection and photography, and the surrounding environment of the bar can be approximately regarded as completely empty. Compared with the first-generation detection equipment, the photography environment of the present invention is simpler and more open, so that the structural edges of the bar in the photographs are clearer, which is more convenient for subsequent image processing, reduces false detection or missed detection, improves the reliability of the detection structure, and thus reduces the process of manual secondary re-inspection and improves detection efficiency.

[0012] 2. In this solution, when the bar is dynamically photographed, the bar handling mechanism moves to the initial loading position, that is, it is located at the other end of the rotating clamp cylinder and will not appear in the shooting range of the detection camera, reducing shooting obstacles. In addition, a parallel light source for fill-in light for the bar is provided at the bottom of the bar support unit. Lighting from the bottom further ensures a clean and bright shooting environment, and dynamically taken photos are clearer, and surface defects of the bar are more obvious and easy to distinguish, effectively improving the inspection quality.

[0013] 3. In this scheme, when the bar is being dynamically photographed, the bar handling mechanism is located on one side of the double-sided loading mechanism, and synchronously clamps the bar to be tested and waits, and the unloading mechanism is located on one side of the bar support unit and waits. When the bar inspection is completed, the unloading drive structure drives the pneumatic fingers to move horizontally to quickly unload the inspected bar, and then the bar handling mechanism synchronously transports the bar to be tested to the bar support unit to be clamped and fixed by the rotating clamp cylinder; the entire unloading and loading process is started synchronously, and the bar can be continuously and intensively inspected. The rhythm connection between each link of the entire inspection process is very tight and the coordination is ingenious, which effectively improves the inspection efficiency.

[0014] 4. In this solution, the bar support unit and the rotary clamp cylinder are both slidably connected to the frame, which can be used to support bars of different lengths. Moreover, compared with the existing detection equipment, the detection of bars of different lengths requires adjustment of the entire equipment process, including reconfiguration of the fixture, adjustment of the sensor position, change of software parameters, etc., in this solution, only the position of the rotary clamp cylinder needs to be simply adjusted. The bar handling mechanism and the unloading mechanism do not need to be adjusted, and they can work in a unified rhythm. It has strong versatility and applicability, and greatly reduces the equipment adjustment cycle and adjustment workload, reduces equipment downtime, and reduces production costs.

[0015] 5. In this solution, the bilateral feeding mechanism, the two support seats supporting the top of the thin rod, and the two rotating clamping claw cylinders cooperate to realize dual-station simultaneous rotation detection of rods. Compared with the single-station detection of existing detection equipment, it effectively increases the detection volume per unit time of the equipment, increases the detection efficiency, and improves the economic benefits of the equipment.

[0016] Make the photo-taking environment more spacious and simple, improve the shooting quality, and thus effectively improve the detection efficiency and quality.

[0017] Furthermore, the supporting thin rod close to the unloading mechanism is the unloading reference rod, the position of the unloading reference rod is fixed, and the distances between the end positions of the travel of the transport drive mechanism and the unloading drive mechanism close to the unloading reference rod and the unloading reference rod are respectively constant.

[0018] In this solution, a material unloading reference rod is introduced to serve as the travel end reference of the transport drive mechanism and the material unloading drive mechanism, so that the bar transport mechanism and the material unloading mechanism can transfer bars of different lengths within the same fixed rhythm. Only a simple adjustment of the rotating clamp cylinder is required. There is no need to frequently adjust the motion path of each mechanism according to the length of the bar and change the equipment program and rhythm to ensure the continuity of the overall inspection process. The overall adjustment amount is greatly reduced, and most operators can complete the adjustment, which reduces the professional requirements and training costs for operators and improves economic benefits.

[0019] Furthermore, the sorting mechanism includes a longitudinal conveying structure located at the top and a transverse conveying structure located at the bottom. The transverse conveying structure is divided into a qualified area and an unqualified area, and the two areas are isolated from each other. Two groups of sorting components with the same structure are provided on the longitudinal conveying structure, and a partition plate is provided between the two groups of sorting components.

[0020] Furthermore, the sorting component includes a first sorting cylinder and a second sorting cylinder, both of which are controlled by the same solenoid valve, a guide block is provided at the end of the output shaft of the first sorting cylinder, a sorting block is provided at the end of the output shaft of the second sorting cylinder, a first sorting arc surface is provided at one end of the sorting block close to the guide block, and a second sorting arc surface is symmetrically provided at the end of the partition plate; when the guide block and the sorting block are close to each other, the sorting component is in a qualified product sorting state, and when the guide block and the sorting block are far away from each other, the sorting component is in a non-qualified product sorting state.

[0021] Compared with the robot sorting or cylinder lifting sorting system in the prior art, the above-mentioned sorting mechanism adopts a simple mechanical mechanism. By accurately controlling the actions of the first sorting cylinder and the second sorting cylinder, the bar material can be accurately guided to the qualified area or the unqualified area, and the design of the first sorting arc surface and the second sorting arc surface is used to enable the bar material to move smoothly when contacting these arc surfaces, and naturally slide down on the side inclined surface of the transmission belt due to the action of gravity, reducing complex sorting actions such as robot or cylinder lifting, simplifying the sorting process, and improving the overall efficiency; and if it is necessary to change the bar material specifications or adjust the sorting parameters, only a simple adjustment of the sorting components is required, without the need for long-term shutdown and the intervention of professional technicians, thereby reducing costs.

[0022] Furthermore, a bearing is provided at one end of the pneumatic finger, and an inverted V-shaped limit block is provided at the other end, and the limit block is made of polyurethane material.

[0023] The bearing design at the end of the pneumatic finger converts the sliding friction between the bar and the pneumatic finger into rolling friction when the pneumatic finger clamps and lifts the bar, reducing the wear on the bar surface; the limit block can keep the bar stable in the pneumatic finger to avoid shaking during the unloading and movement process, and secondly, the inverted V-shaped structure can ensure that bars of different diameters can be unloaded stably; at the same time, the polyurethane material will not cause secondary wear on the bar surface.

[0024] Furthermore, when the bar is placed on the bar support unit, the distance between the end of the bar close to the unloading mechanism and the unloading reference rod is 3-5 cm. The above arrangement ensures the effective grasping position of the pneumatic fingers of the unloading mechanism, and can stably clamp the bar and transfer it to the sorting mechanism.

[0025] Furthermore, the frame is also provided with a bar cache belt line, which is located between the double-sided feeding mechanism and the rotation detection mechanism. The bar cache belt line is provided with two independent transmission channels and a horizontally penetrating clamping notch at one end close to the rotation detection mechanism.

[0026] The bar buffer belt line prevents the bar handling mechanism from directly taking over the bars from the double-sided loading mechanism, effectively preventing the failure of bar transfer or collision interference between the bar handling mechanism and the double-sided loading mechanism due to rhythm error or position error. The bar buffer belt line keeps the bars in a stable state and the same position, ensuring that each bar can be stably clamped and transferred, thereby improving the continuity and reliability of equipment detection.

[0027] Furthermore, a protective cover is provided on the frame, and the protective cover is arranged on the outside of the rotation detection mechanism, the bar material handling mechanism and the bar material supporting unit, and a reflective layer is provided on the inner wall of the protective cover.

[0028] The protective cover not only effectively avoids the interference of the external environment on the transportation and detection of the bar material, ensuring the stability and reliability of the entire detection process, but also makes the rotating detection mechanism, the parallel light source and the bar material to be detected in a relatively closed space, so that the light emitted by the parallel light source is gathered in the space, and the bar material is enhanced to the maximum extent, forming an ideal lighting environment, so that the detection camera can clearly obtain the surface information of the bar material and ensure the detection quality; at the same time, the reflective layer on the inner wall of the protective cover makes the light evenly distributed to every corner of the space after being reflected, reducing the dark area, improving the overall brightness, and ensuring the picture clarity of the detection camera.

[0029] Furthermore, the inner sides of the clamping jaws are provided with V-shaped grooves, which can automatically center the clamping jaws when clamping the bar material, and increase the contact points with the bar material to achieve stable clamping.

[0030] Furthermore, the two clamping blocks of the clamping structure are provided with anti-scratch blocks on opposite sides, which are made of plastic material and have a V-shaped cross section. The anti-scratch blocks made of plastic can avoid secondary damage to the surface of the bar material and increase surface defects during transportation, thereby ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 2 is an overall structural diagram of an embodiment of the present invention.

[0032] Figure 2 1 is an overall structural diagram of an embodiment of the present invention (the structure after removing both sides of the protective cover).

[0033] Figure 3 for Figure 2 A partial enlarged view of part A.

[0034] Figure 4 A partial enlarged view of the bar cache belt line.

[0035] Figure 5 An enlarged view of the bar support unit.

[0036] Figure 6 This is a partial enlarged view of the double-sided feeding mechanism.

[0037] Figure 7 This is the structural diagram of the sorting mechanism.

[0038] Figure 8 for Figure 7 A partial enlarged view of part B.

[0039] Fig. 9 A top view of the sorting mechanism. DETAILED DESCRIPTION

[0040] The following is further described in detail through specific implementation methods:

[0041] The reference numerals in the drawings of the specification include: frame 100, double-sided feeding mechanism 1, feeding conveyor belt 11, feeding cylinder 12, lifting cylinder 13, lifting seat 14, feeding fixture 15, support table 16, bar buffer belt line 2, transmission channel 21, clamping notch 22, bar handling mechanism 3, first magnetic coupling cylinder 31, lifting cylinder 32, clamping structure 33, rotating detection mechanism 4, rotating claw cylinder 41, detection camera 42, bar support unit 5, supporting thin rod 51, support seat 52, unloading mechanism 6, second magnetic coupling cylinder 61, pneumatic finger 62, bearing 63, limit plate 64, sorting mechanism 7, horizontal conveying structure 71, qualified area 711, unqualified area 712, longitudinal conveying structure 72, sorting assembly 721, first sorting cylinder 7211, second sorting cylinder 7212, guide block 7213, sorting block 7214, first sorting arc surface 7215, second sorting arc surface 7216, partition plate 73, protective cover 8.

[0042] The embodiment is basically as shown in the attached Figure 1-Figure 9 As shown:

[0043] An automatic bar product quality testing device, such as Figure 1 , Figure 2 As shown in the figure, the rack 100 is provided with a double-sided feeding mechanism 1, a bar material handling mechanism 3, a rotating detection mechanism 4, a material unloading mechanism 6 and a sorting mechanism 7; the bar material handling mechanism 3 transfers the bar materials to the rotating detection mechanism 4 for detection, and the material unloading mechanism 6 transfers the detected bar materials to the sorting mechanism 7 for qualified sorting. Figure 1 , Figure 6 As shown in the figure, the double-sided feeding mechanism 1 includes a symmetrically arranged feeding conveyor belt 11, a feeding cylinder 12 and a feeding clamp 15. The front end of the feeding conveyor belt 11 is provided with a lifting cylinder 13 and a support platform 16 located on both sides of the lifting cylinder 13. The support platform 16 is L-shaped. A lifting seat 14 is installed at the end of the output shaft of the lifting cylinder 13. The feeding clamp 15 is a pneumatic clamp and is driven by the feeding cylinder 12 to perform horizontal movement for feeding.

[0044] A bar material buffer belt line 2 is provided below the double-sided feeding mechanism 1. Figure 2 , Figure 4 , Figure 6 As shown, the bar cache belt line 2 is driven by a motor to achieve rotational motion. Two independent transmission channels 21 are provided on the bar cache belt line 2, and a horizontally penetrating clamping notch 22 is opened at one end close to the rotation detection mechanism 4. The upper part of the transmission channel 21 is a gradually expanding wedge-shaped opening so that the bar can fall smoothly into the transmission channel 21.

[0045] The bars are clamped by the double-sided feeding mechanism 1 and placed on the bar buffer belt line 2, and then transferred by the bar handling mechanism 3, which avoids the bar handling mechanism 3 directly taking over the bars from the double-sided feeding mechanism 1, and effectively prevents the bar handling mechanism 3 and the double-sided feeding mechanism 1 from failing to transfer the bars or causing collision and interference between the two if there is a beat error or position error on either side. The bar buffer belt line 2 keeps the bars in a stable state and the same position, ensuring that each bar can be stably clamped and transferred, thereby improving the continuity and reliability of equipment detection.

[0046] like Figure 2 , Figure 4 As shown, the rotating detection mechanism 4 includes two rotating jaw cylinders 41 arranged in parallel and a detection camera 42 located above the rotating jaw cylinder 41, the detection camera 42 can be slidably adjusted along the axis of the bar, and the detection camera 42 combines the YOLO visual detection technology to perform defect analysis on the surface of the bar and connects the signal to the control system, the control system stores the pictures taken by the detection camera 42 and the analysis results, wherein the control system is implemented by the prior art PLC, and the YOLO visual detection technology is also a prior art, which will not be repeated here; the jaws of the rotating jaw cylinder 41 are arranged opposite to the bilateral feeding mechanism 1, and the jaws are located in a horizontal plane and are in an open state when waiting to clamp the bar, and the inner sides of the jaws are provided with V-shaped grooves, and rounded transition treatment is performed.

[0047] The front side of the rotating jaw cylinder 41 is provided with a bar support unit 5, such as Figure 3 , Figure 5 As shown, the rod support unit 5 includes a pair of supporting thin rods 51, and two supporting seats 52 are provided on the top of the supporting thin rods 51. The support seats 52 are horizontally coaxial with the clamping jaws of the rotating clamping jaw cylinder 41. The rod support unit 5 not only supports the rod, but also centers the rod at two points through the two supporting thin rods 51 to ensure that the rotating clamping jaw cylinder 41 can clamp accurately; the bottom of the rod support unit 5 is provided with a parallel light source (not shown in the figure) for supplementary lighting of the rod, and a rectangular through hole is opened on the bottom plate of the frame 100 at the rotation detection mechanism 4 to reduce bottom interference during shooting.

[0048] The rod support unit 5 is arranged on the front side of the jaws of the rotating jaw cylinder 41, and the jaws of the rotating jaw cylinder 41 are arranged opposite to the double-sided feeding mechanism 1, so that the rod support unit 5 is also far away from the double-sided feeding mechanism 1, and the light rod structure supporting the thin rod 51 can be ignored in the detection and photography. The environment around the rod is almost regarded as completely empty. The structural edge of the rod in the photograph is clearer, which is more convenient for subsequent image processing, reducing false detection or missed detection, and improving the reliability of the detection structure.

[0049] like Figure 2 , Figure 3 , Figure 5 As shown, the bar material handling mechanism 3 is located on one side of the rotating detection mechanism 4, and the bar material handling mechanism 3 includes a handling drive structure and a clamping structure 33. The handling drive structure drives the clamping structure 33 to perform horizontal and vertical movements. The handling drive structure includes a first magnetic coupling cylinder 31 and a lifting cylinder 32. The clamping structure 33 is fixed to the axial end of the lifting cylinder 32. Anti-scratch blocks are provided on opposite sides of the two clamping blocks of the clamping structure 33. The anti-scratch blocks are made of plastic material and have a V-shaped cross-section.

[0050] like Figure 2 , Figure 3 , Figure 5 As shown, the unloading mechanism 6 includes an unloading drive structure and a pneumatic finger 62. The unloading drive structure drives the pneumatic finger 62 to move horizontally. The unloading drive structure is a second magnetically coupled cylinder 61. An L-shaped connecting rod is installed between the second magnetically coupled cylinder 61 and the pneumatic finger 62. A bearing 63 is installed at either end of the pneumatic finger 62, and an inverted V-shaped limit plate 64 for enhanced fixation is installed at the other end. The limit plate 64 is made of polyurethane material; the clamping structure 33 and the pneumatic finger 62 are existing pneumatic clamps and will not be described in detail here.

[0051] Through the above arrangement, when the bar is being dynamically photographed, the bar handling mechanism 3 is located on one side of the double-sided loading mechanism 1 and will not appear in the shooting range of the detection camera 42, reducing shooting obstacles, and also synchronously clamps and waits for the bar to be inspected. The unloading mechanism 6 is located on one side of the bar support unit 5 and waits. When the bar inspection is completed, the unloading drive structure drives the pneumatic finger 62 to move horizontally to quickly unload the inspected bar, and then the bar handling mechanism 3 synchronously transports the bar to be inspected to the bar support unit 5 to be clamped and fixed by the rotating clamp cylinder 41; the entire unloading and loading process is started synchronously, the bar can be continuously and intensively inspected, and the rhythm connection between each link of the entire inspection process is very tight and the coordination is ingenious, which effectively improves the inspection efficiency.

[0052] The frame 100 is provided with a protective cover 8, which is arranged on the outside of the rotating detection mechanism 4, the bar material handling mechanism 3 and the bar material supporting unit 5, and a reflective layer is provided on the inner wall of the protective cover 8, and the reflective layer can use existing tin foil, aluminum foil, etc. The protective cover 8 not only effectively avoids the interference of the external environment on the transportation and detection of the bar materials, ensuring the stability and reliability of the entire detection process, but also makes the rotating detection mechanism 4, the parallel light source and the bar materials to be detected in a relatively closed space, so that the light emitted by the parallel light source is gathered in the space, and the bar materials are supplemented with light to the maximum extent, forming an ideal lighting environment, so that the detection camera 42 can clearly obtain the surface information of the bar materials, and ensure the detection quality; at the same time, the reflective layer on the inner wall of the protective cover 8 makes the light evenly distributed to every corner of the space after being reflected, reducing the dark area, improving the overall brightness, and ensuring the clarity of the detection camera 42.

[0053] When inspecting products of different lengths, existing bar inspection equipment usually needs to frequently adjust the movement path of each mechanism according to the length of the bar and change the equipment program and rhythm to ensure the continuity of the overall inspection process, resulting in large adjustments each time and complex operations. In addition, a lot of costs are required to train operators so that they have high professional capabilities and can skillfully adjust equipment and programs, increasing overall costs.

[0054] Therefore, in order to solve the above problems, the present invention installs a slide rail on the bottom of the frame 100, and the parallel light source is installed on both sides of the slide rail. The rod support unit 5 and the rotating clamp cylinder 41 are slidably connected to the frame 100 through the slide rail. The bottom of the supporting thin rod 51 and the rotating clamp cylinder 41 are provided with a slider that cooperates with the slide rail. The side of the slider is provided with a threaded hole and a screw is installed in the threaded hole to fix the position of the slider and the slide rail, fix the rotating clamp cylinder 41 or the rod support unit 5, so as to meet the clamping detection of products of different lengths; further, the supporting thin rod 51 close to the unloading mechanism 6 is used as the unloading reference rod, the position of the unloading reference rod is fixed, and the transport drive mechanism and the unloading drive mechanism are close to the unloading base The distance between the end position of the travel of the calibration rod and the unloading reference rod is constant, that is, the travel paths of the first magnetic coupling cylinder 31 and the second magnetic coupling cylinder 61 remain unchanged; in specific operation, the unloading reference rod serves as the end point reference of the travel of the conveying drive mechanism and the unloading drive mechanism, so that the bar conveying mechanism 3 and the unloading mechanism 6 can transfer bars of different lengths within the same fixed rhythm. It is only necessary to loosen the bolts at the bottom of the rotating jaw cylinder 41, release the fixing relationship between the slider and the slide rail, and then adjust the rotating jaw cylinder 41 to a suitable position, and then fasten the bolts again. There is no need to change the equipment program and the rhythm between the individual mechanisms. Most workers can operate the equipment, effectively reducing costs.

[0055] like Figure 7 , Figure 8 and Fig. 9As shown, the sorting mechanism 7 includes a longitudinal conveying structure 72 located at the top and a transverse conveying structure 71 located at the bottom. The transverse conveying structure 71 is divided into a qualified area 711 and an unqualified area 712, and the two areas are isolated from each other. Two groups of sorting components 721 with the same structure are provided on the longitudinal conveying structure 72, and a partition plate 73 is provided between the two groups of sorting components 721; the sorting component 721 includes a first sorting cylinder 7211 and a second sorting cylinder 7212, both of which are controlled by the same solenoid valve, and the solenoid valve receives a qualified sorting signal from the control system, a guide block 7213 is provided at the end of the output shaft of the first sorting cylinder 7211, and a sorting block 7214 is provided at the end of the output shaft of the second sorting cylinder 7212, and a first sorting arc surface 7215 is provided at one end of the sorting block 7214 close to the guide block 7213, and the end of the partition plate 73 is symmetrically provided with a first sorting arc surface 7215. There is a second sorting arc surface 7216; when the guide block 7213 and the sorting block 7214 are away from each other, that is, the guide block 7213 is away from the partition plate 73, the guide block 7213 is close to the partition plate 73 so that there is an obstruction on the conveyor belt, and the sorting component 721 is in a qualified product sorting state; when the guide block 7213 and the sorting block 7214 are close to each other, that is, the guide block 7213 and the guide block 7213 are both away from the partition plate 73, there is no obstruction on the conveyor belt, and the sorting component 721 is in an unqualified product sorting state; preferably, the transmission belt of the longitudinal conveying structure is inclined downward from both sides of the middle phase. During sorting, the bar material is transported on the transmission belt of the longitudinal conveying structure and falls along the inclined surface of the conveyor belt to the qualified area 711 or the unqualified area 712 of the transverse conveying structure when it contacts the first sorting arc surface 7215 or the second sorting arc surface 7216 to realize sorting.

[0056] Compared with the robot sorting or cylinder lifting sorting system in the prior art, the above-mentioned sorting mechanism 7 adopts a simple mechanical mechanism. By accurately controlling the actions of the first sorting cylinder 7211 and the second sorting cylinder 7212, the rods can be accurately guided to the qualified area 711 or the unqualified area 712, and the design of the first sorting arc surface 7215 and the second sorting arc surface 7216 is used to enable the rods to move smoothly when contacting these arc surfaces, and naturally slide down on the side slope of the transmission belt due to the action of gravity, reducing complex sorting actions such as robot or cylinder lifting, simplifying the sorting process, and improving the overall efficiency; and if it is necessary to change the specifications of the rods or adjust the sorting parameters, only a simple adjustment of the sorting component 721 is required, without the need for long-term shutdown and the intervention of professional technicians, thereby reducing costs.

[0057] In this solution, the support seat 52, the guide block 7213, the sorting block 7214 and the partition plate 73 in the sorting mechanism 7 and the conveying channel 21 on the bar buffer belt line 2 are all made of plastic materials, such as polyurethane. When the plastic material comes into contact with the bar, it can avoid causing secondary damage to the surface of the bar, thereby ensuring the surface quality of the bar.

[0058] The specific implementation process is as follows:

[0059] Loading process:

[0060] The worker piles the bars to be tested on the loading conveyor belt 11, and the loading conveyor belt 11 starts to transport the bars to the lifting cylinder 13. The front end of the bar leaves the loading conveyor belt 11 and falls into the support platform 16. The lifting cylinder 13 starts to lift the lifting seat 14 upward. During the rising process, the lifting seat 14 first contacts the bottom of the bar and gradually makes the bar leave the support platform 16 and rise to the clamping height of the loading clamp 15; the loading clamp 15 clamps the bar and is driven by the loading cylinder 12 to the top of the transmission channel 21 of the bar buffer belt line 2, and then the loading clamp 15 is released, and the bar falls into the bar buffer belt line 2, and the bar buffer belt line 2 transports the bar to the rotating detection mechanism 4.

[0061] Handling and testing process:

[0062] Driven by the first magnetic coupling cylinder 31, the clamping structure 33 moves in advance to above the clamping notch 22 of the bar cache belt line 2, and then the lifting cylinder 32 drives the clamping structure 33 to descend, and the clamping structure 33 aligns with the clamping notch 22 to clamp and fix the bar, and then the lifting cylinder 32 and the first magnetic coupling cylinder 31 drive the bar to be transported to above the bar support unit 5, the lifting cylinder 32 drives the clamping structure 33 and the bar to descend and place the bar on the bar support unit 5, and one end of the bar is located in the clamping claw of the rotating clamp cylinder 41; after the bar is transported, the clamping structure 33 is driven back to above the clamping notch 22 by the lifting cylinder 32 and the first magnetic coupling cylinder 31 and clamps and waits for the next bar with detection, at this time, the rotating clamp cylinder 41 clamps the bar and drives the bar to rotate, and the detection camera 42 takes pictures of the bar during the rotation process, and transmits the results to the control system after analysis and processing of the taken pictures.

[0063] Unloading and sorting process:

[0064] After the dynamic rotation detection is completed, the clamping jaws of the rotating clamping jaw cylinder 41 are opened, and the second magnetic coupling cylinder 61 drives the pneumatic finger 62 to move horizontally to the end of the bar material and clamp the bar material, and then transports the bar material horizontally to the sorting mechanism 7. At the same time, the bar material transporting mechanism 3 is synchronously started to transport the next bar material to be inspected to the bar material support unit 5, so that the next bar material can be seamlessly connected for rotation detection; the unloading mechanism 6 transfers the inspected bar material to the conveyor belt of the longitudinal conveying structure 72, and the first sorting cylinder 7211 and the second sorting cylinder 7212 in the sorting component 721 are controlled by the solenoid valve to receive the qualified sorting signal from the control system. If the inspected bar material is qualified, the solenoid valve controls the first sorting cylinder 7211 and the second sorting cylinder 7212 to make the guide block 7213 and the sorting block 7214 move away from each other, that is, the guide block 7213 moves away from the partition plate 7 3. The guide block 7213 is pressed against the partition plate 73 to block the conveyor belt, and the sorting assembly 721 is in a qualified product sorting state. The bar material touches the first sorting arc surface 7215 on the guide block 7213 and falls into the qualified area 711 of the horizontal conveying structure 71 along the inclined surface of the conveyor belt for collection and gathering. If the bar material after inspection is unqualified, the solenoid valve controls the first sorting cylinder 7211 and the second sorting cylinder 7212 to make the guide block 7213 and the sorting block 7214 approach each other, that is, the guide block 7213 and the guide block 7214 are both away from the partition plate 73, and there is no obstruction on the conveyor belt. The sorting assembly 721 is in a non-qualified product sorting state, and the bar material is transported to the end of the longitudinal conveying structure 72 and falls into the non-qualified area 712 of the horizontal conveying structure 71 along the second sorting arc surface 7216 after passing through the sorting assembly 721. The above is a complete inspection and sorting process for a bar material.

[0065] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. An automatic bar product quality detection device, characterized in that: The machine comprises a frame, on which are arranged a double-sided feeding mechanism, a bar material handling mechanism, a rotating detection mechanism, a feeding mechanism and a sorting mechanism; the bar material handling mechanism transfers the bar materials to the rotating detection mechanism for detection, and the feeding mechanism transfers the detected bar materials to the sorting mechanism for qualified sorting; the rotating detection mechanism comprises two rotating jaw cylinders arranged in parallel and a detection camera located above the rotating jaw cylinders, the jaws of the rotating jaw cylinders are arranged opposite to the double-sided feeding mechanism, and a bar material supporting unit is arranged on the front side of the jaws of the rotating jaw cylinders, and the bar material supporting unit comprises a For the supporting thin rod, two supporting seats are provided on the top of the supporting thin rod, the supporting seats are horizontally coaxial with the clamping jaws of the rotating clamping jaw cylinder, and the rod support unit and the rotating clamping jaw cylinder are both slidably connected to the frame; the bottom of the rod support unit is provided with a parallel light source for supplementary light to the rod; the rod handling mechanism is located on one side of the rotating detection mechanism, including a handling drive structure and a clamping structure, and the handling drive structure drives the clamping structure to move horizontally and vertically; the unloading mechanism includes a unloading drive structure and a pneumatic finger, and the unloading drive structure drives the pneumatic finger to move horizontally.

2. The automatic bar product quality detection equipment according to claim 1 is characterized in that: The supporting thin rod near the unloading mechanism is the unloading reference rod, the position of the unloading reference rod is fixed, and the distances between the travel end positions of the transport drive mechanism and the unloading drive mechanism near the unloading reference rod and the unloading reference rod are respectively constant.

3. The automatic bar product quality detection equipment according to claim 1 is characterized in that: The sorting mechanism includes a longitudinal conveying structure located at the top and a transverse conveying structure located at the bottom. The transverse conveying structure is divided into a qualified area and an unqualified area, and the two areas are isolated from each other. Two groups of sorting components with the same structure are arranged on the longitudinal conveying structure, and a partition plate is arranged between the two groups of sorting components.

4. The automatic bar product quality detection equipment according to claim 3 is characterized by: The sorting assembly comprises a first sorting cylinder and a second sorting cylinder, both of which are controlled by the same solenoid valve, a guide block is provided at the end of the output shaft of the first sorting cylinder, a sorting block is provided at the end of the output shaft of the second sorting cylinder, a first sorting arc surface is provided at one end of the sorting block close to the guide block, and a second sorting arc surface is symmetrically provided at the end of the partition plate; when the guide block and the sorting block are close to each other, the sorting assembly is in a qualified product sorting state, and when the guide block and the sorting block are far away from each other, the sorting assembly is in a non-qualified product sorting state.

5. An automatic bar product quality detection device according to any one of claims 1 to 4, characterized in that: The two ends of the pneumatic finger are provided with bearings, and either end is provided with an inverted V-shaped limit block, and the limit block is made of plastic material.

6. The automatic bar product quality detection equipment according to claim 2 is characterized by: When the bar is placed on the bar support unit, the distance between the end of the bar close to the unloading mechanism and the unloading reference rod is 3-5 cm.

7. The automatic bar product quality detection equipment according to claim 5 is characterized by: The frame is also provided with a bar material buffer belt line, which is located between the double-sided feeding mechanism and the rotating detection mechanism. The bar material buffer belt line is provided with two independent transmission channels and a horizontally penetrating clamping notch at one end close to the rotating detection mechanism.

8. An automatic bar product quality detection device according to any one of claims 1-4, 6-7, characterized in that: The frame is provided with a protective cover, which is arranged on the outside of the rotation detection mechanism, the bar material conveying mechanism and the bar material supporting unit, and a reflective layer is provided on the inner wall of the protective cover.

9. The automatic bar product quality detection equipment according to claim 8 is characterized by: The inner sides of the clamping jaws are opposite to each other and are provided with V-shaped grooves.

10. The automatic bar product quality detection equipment according to claim 9, characterized in that: An anti-scratch block is arranged on one side opposite to the two clamping blocks of the clamping structure. The anti-scratch block is made of plastic material and has a V-shaped cross section.

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