Bearing roller automatic flaw detection equipment and flaw detection method thereof

Abstract

The application discloses a kind of bearing roller automatic flaw detection equipment and its flaw detection method, it is related to flaw detection equipment field, its technical solution main point is: frame is provided with feeding mechanism, eddy current detection mechanism, transfer platform, defective product storage groove, good product unloading and stacking mechanism, eddy current detection mechanism, feeding transfer module and unloading transfer module, feeding mechanism includes the loading plate and receiving jig being set on the frame, fixed baffle is fixed on the loading plate, slidingly connected with movable baffle between every adjacent two fixed baffles on the loading plate, first drive assembly for driving movable baffle to slide is arranged on the loading plate, material baffle is also arranged on the frame, second drive assembly for driving the loading plate to slide is also arranged on the frame, so that the inclined end of each storage chute is sequentially aligned with receiving jig.The application has the advantages of high feeding efficiency and good feeding stability.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of flaw detection equipment, more particularly, it relates to a bearing roller automatic flaw detection equipment and a flaw detection method thereof. BACKGROUND

[0002] Cylindrical roller bearing refers to the rolling element is a cylindrical roller centripetal rolling bearing, cylindrical roller bearing belongs to the separation type bearing, installation and disassembly is very convenient. Can bear large radial load and use in high speed operation occasions.

[0003] The cylindrical bearing roller in the cylindrical roller bearing is an important part, and the outer circumferential surface of the bearing roller needs to be detected for cracks, depressions and other defects before leaving the factory.

[0004] For the detection of bearing rollers, a large-diameter bearing roller detection equipment based on machine vision is disclosed in Chinese patent No. CN11014073A, and the technical solution is as follows: by setting the first material receiving station, the second material receiving station and the cylinder, the product conveyed by the conveying belt is grabbed to the detection machine and positioned by the feeding mechanism, then the roller is conveyed to the left end face detection station, the odd circumferential surface detection station, the right end face detection station and the even circumferential surface detection station by the carrying assembly to detect the end face defects, chamfer defects and circumferential surface defects of the measured roller.

[0005] Although the above-mentioned method realizes automatic flaw detection of bearing rollers, the bearing rollers need to be continuously taken and placed one by one on the conveying belt during feeding of the bearing rollers, and then conveyed to the bottom of the feeding mechanism by the conveying belt. Such feeding method is low in efficiency, and the product is easy to slide and shift during conveying on the conveying belt, so that the feeding mechanism cannot accurately take and place the product in the detection station, reducing the detection accuracy of the product.

[0006] Therefore, a new scheme is needed to solve this problem. SUMMARY

[0007] In view of the deficiencies of the prior art, the purpose of the present application is to provide a bearing roller automatic flaw detection equipment and a flaw detection method thereof, which solves the problems of low feeding efficiency and low feeding stability in the existing detection equipment.

[0008] The technical purposes are achieved by the following technical scheme: a bearing roller automatic flaw detection equipment, comprising a rack, the rack is provided with a feeding mechanism, an eddy current detection mechanism, a transfer table, a defective product storage groove, a good product unloading and stacking mechanism, an upper feeding and transferring module for taking and placing products on the feeding mechanism to the eddy current detection mechanism and taking and placing products on the eddy current detection mechanism to the transfer table, and a lower feeding and transferring module for taking and placing products on the transfer table into the defective product storage groove or the good product unloading and stacking mechanism, the feeding mechanism comprises a loading plate and a receiving jig arranged on the rack, the loading plate is arranged downwardly inclined to the eddy current detection mechanism, a fixed blocking strip is fixedly connected to the loading plate towards the eddy current detection mechanism, the fixed blocking strip is arranged as a plurality of blocking strips, the plurality of fixed blocking strips are uniformly distributed on the loading plate, a movable blocking strip is slidably connected to the loading plate between every two adjacent fixed blocking strips, the movable blocking strip is parallel to the fixed blocking strip, a first driving assembly is arranged on the loading plate and can drive the movable blocking strip to slide, a storage chute is formed between each movable blocking strip and one fixed blocking strip, a blocking strip is further arranged on the rack, the blocking strip is in gap contact with the inclined end of the loading plate, the receiving jig is located on one side of the blocking strip and is in the same straight line with the blocking strip, a second driving assembly is further arranged on the rack and can drive the loading plate to slide so that the inclined end of each storage chute is sequentially aligned with the receiving jig.

[0009] In one embodiment, the first driving assembly comprises side plates fixed on both sides of the loading plate respectively, a guide shaft fixedly connected between the two side plates, a driving frame slidably connected on the guide shaft, and a lead screw rotationally connected between the two side plates, a driving block is fixed on the driving frame, the driving block is threadedly connected with the lead screw, each movable blocking strip is fixedly connected with the driving frame respectively, the loading plate is slidably connected with the rack through a slide rail pair, the second driving assembly comprises a first servo linear module fixed on the rack, the output end of the first servo linear module is fixedly connected with the loading plate, a longitudinal cylinder is fixed on the rack, and the receiving jig is fixed on the output end of the longitudinal cylinder.

[0010] In one embodiment, the eddy current detection mechanism comprises a support fixed on the rack, two rotating rollers rotationally connected on the support, and a driving assembly for driving the two rotating rollers to rotate in the same direction, the axial lines of the two rotating rollers are coplanar, a product rotating gap is formed between the two rotating rollers, the eddy current detection mechanism further comprises an eddy current probe arranged above the product rotating gap and a second linear module for driving the eddy current probe to reciprocate along the length direction of the product rotating gap, the second linear module is fixed on the rack, a detection bracket is fixed on the output end of the second linear module, and the eddy current probe is fixed on the detection bracket.

[0011] In one of the embodiments, a rotating cylinder is fixed on the frame, an output end of the rotating cylinder is fixed with a rotating frame, and the transfer loading platform is fixed on the rotating frame. The transfer loading platform is provided in two, and the two transfer loading platforms are oppositely arranged.

[0012] In one of the embodiments, the good product unloading and stacking mechanism comprises a truss manipulator fixed on the frame and a tray placing assembly arranged below the truss manipulator. The tray placing assembly is provided in at least two. The tray placing assembly comprises a tray loading platform longitudinally and slidingly connected to the frame and a third driving assembly arranged on the frame for driving the tray loading platform to ascend and descend. The top of the tray loading platform is provided with a foot pad at each of the four corners.

[0013] In one of the embodiments, an organ type protective cover is arranged between the tray loading platform and the frame for sealing the third driving assembly.

[0014] In one of the embodiments, the flaw detection method of the bearing roller automatic flaw detection equipment comprises the following steps:

[0015] The first driving assembly is used to adjust the distance between the movable blocking strip and the fixed blocking strip, so that the width of the storage chute is adapted to the length of the product;

[0016] The storage chute is filled with the product;

[0017] The second driving assembly drives the loading plate to slide, so that the inclined end of one of the storage chutes is separated from the blocking of the blocking strip and is aligned with the receiving jig. The products in the storage chute are sequentially slid into the receiving jig;

[0018] The feeding and transferring module takes the product in the receiving jig and places it into the eddy current detection mechanism for eddy current detection. After the detection is completed, the feeding and transferring module takes the product in the eddy current detection mechanism and places it on the intermediate loading platform. The intermediate loading platform transfers the product to one side of the defective product storage groove;

[0019] The good product tray unloading mechanism takes the tray and places it to the target position. The unloading and transferring module takes the defective product according to the detection result and places it into the defective product storage groove, and stacks the good product into the tray.

[0020] In summary, the application has the following beneficial effects: through the setting of the feeding mechanism, when feeding the product, the interval between the movable baffle and the fixed baffle is adjusted by the first driving assembly, so that the width of the storage chute is adapted to the length of the product, which can better limit the product and prevent the product from deviating, thereby improving the positioning accuracy of the product in the receiving jig, and the inclined ends of multiple storage chutes can be sequentially aligned with the receiving jig by the second driving assembly, so that when the feeding of the product in one storage chute is completed, the feeding of the product in the next storage chute can be continued, thereby reducing the standby time of feeding and effectively improving the feeding efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the bearing roller automatic flaw detection equipment of the embodiment of the application;

[0022] Figure 2 It is a structural schematic diagram of the feeding mechanism in the bearing roller automatic flaw detection equipment of the embodiment of the application;

[0023] Figure 3 It is a structural schematic diagram of the eddy current detection mechanism in the bearing roller automatic flaw detection equipment of the embodiment of the application;

[0024] Figure 4 It is a structural schematic diagram of the good product unloading and stacking mechanism in the bearing roller automatic flaw detection equipment of the embodiment of the application.

[0025] In the figure: 1, feeding mechanism; 11, receiving jig; 12, carrier plate; 13, movable baffle; 14, fixed baffle; 15, first driving assembly; 151, side plate; 152, guide shaft; 153, screw rod; 154, driving frame; 2, eddy current detection mechanism; 21, support; 22, rotating roller; 23, second linear module; 24, detection support; 25, eddy current probe; 3, feeding and transferring module; 4, intermediate transfer table; 5, defective product storage groove; 6, good product unloading and stacking mechanism; 61, truss manipulator; 62, tray carrier; 63, foot pad; 64, organ type protective cover; 7, rack; 8, unloading and transferring module. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the application.

[0027] As Figure 1 and Figure 2As shown, the embodiment of the present application provides a bearing roller automatic flaw detection device, which comprises a rack 7, the rack 7 is provided with a feeding mechanism 1, an eddy current detection mechanism 2, a transfer loading platform 4, a defective product storage groove 5, a good product unloading and stacking mechanism 6, an upper feeding and transferring module 3 for taking and placing the product on the feeding mechanism 1 to the eddy current detection mechanism 2 and taking and placing the product on the eddy current detection mechanism 2 to the transfer loading platform 4, and a lower unloading and transferring module 8 for taking and placing the product on the transfer loading platform 4 into the defective product storage groove 5 or the good product unloading and stacking mechanism 6. The feeding mechanism 1 comprises a loading plate 12 and a receiving jig 11 arranged on the rack 7, the loading plate 12 is arranged downwardly inclined towards the eddy current detection mechanism 2, a fixed blocking strip 14 is fixedly connected to the loading plate 12 towards the eddy current detection mechanism 2, the fixed blocking strip 14 is arranged as a plurality of strips, the plurality of fixed blocking strips 14 are uniformly distributed on the loading plate 12, a movable blocking strip 13 is slidably connected to the loading plate 12 between every two adjacent fixed blocking strips 14, and the movable blocking strip 13 is parallel to the fixed blocking strip 14. A first driving assembly 15 is arranged on the loading plate 12 to drive the movable blocking strip 13 to slide, and a storage chute is formed between each movable blocking strip 13 and one fixed blocking strip 14. A blocking strip is further arranged on the rack 7, the blocking strip is in gap contact with the inclined end of the loading plate 12, the receiving jig 11 is located on one side of the blocking strip and is in the same straight line with the blocking strip. A second driving assembly is further arranged on the rack 7 to drive the loading plate 12 to slide, so that the inclined end of each storage chute is sequentially aligned with the receiving jig 11.

[0028] It should be noted that the upper feeding and transferring module 3 and the lower unloading and transferring module 8 can adopt a three-axis truss motion module or a six-axis mechanical hand.

[0029] In operation, the distance between the movable blocking strip 13 and the fixed blocking strip is adjusted by the first driving assembly 15, so that the width of the storage chute is adapted to the length of the product, the loading plate 12 is driven by the second driving assembly to slide, so that the inclined end of one storage chute is out of the blocking of the blocking strip and is aligned with the receiving jig 11, a plurality of products are sequentially slid from the storage chute to the receiving jig 11, the product in the receiving jig 11 is taken and placed into the eddy current detection mechanism 2 by the upper feeding and transferring module 3 for eddy current detection, after the detection is completed, the product in the eddy current detection mechanism 2 is taken and placed onto the transfer loading platform by the upper feeding and transferring module 3, the product is transferred to one side of the defective product storage groove 5 by the transfer loading platform 4, the tray is taken and placed to the target position by the good product stacking and unloading mechanism, and the defective product is taken and placed into the defective product storage groove 5 and the good product is stacked into the tray according to the detection result by the lower unloading and transferring module 8.

[0030] In the above manner, when the products are fed, the interval between the movable blocking strip 13 and the fixed blocking strip is adjusted by the first driving assembly 15, so that the width of the storage chute is adapted to the length of the product, which can better limit the product and prevent the product from deviating, thereby improving the positioning accuracy of the product in the receiving jig 11. The inclined ends of the plurality of storage chutes are sequentially aligned with the receiving jig 11 by the second driving assembly, so that when the feeding of the product in one storage chute is completed, the feeding of the product in the next storage chute can be continued, reducing the standby time of the feeding and effectively improving the feeding efficiency.

[0031] In this embodiment, the first driving assembly 15 includes side plates 151 fixed on both sides of the carrier plate 12, a guide shaft 152 fixedly connected between the two side plates 151, a driving frame 154 slidingly connected on the guide shaft 152, and a lead screw 153 rotationally connected between the two side plates 151. The driving frame 154 is fixed with a driving block, the driving block is threadedly connected with the lead screw 153, and each movable blocking strip 13 is fixedly connected with the driving frame 154. The carrier plate 12 is slidingly connected with the rack 7 through a slide rail pair. The second driving assembly includes a first servo linear module fixed on the rack 7, the output end of the first servo linear module is fixedly connected with the carrier plate 12, and a longitudinal cylinder is fixed on the rack 7. The receiving jig 11 is fixed on the output end of the longitudinal cylinder.

[0032] Specifically, the guide shaft 152 is parallelly arranged as at least two, the end of the lead screw 153 is fixed with a handle, the driving frame 154 is moved by rotating the handle of the lead screw 153, thereby driving the movable blocking strip 13 to move, and the first servo linear module drives the carrier plate 12 to move so that the plurality of storage chutes are aligned with the receiving jig 11.

[0033] In the above manner, the interval between the movable blocking strip 13 and the fixed blocking strip can be adjusted according to the height of the product by the first driving assembly 15, which can better limit the product and prevent the product from deviating, thereby improving the positioning accuracy of the product in the receiving jig 11. The carrier plate 12 slides more stably and smoothly by the slide rail pair.

[0034] In this embodiment, as Figure 3As shown, the eddy current detection mechanism 2 comprises a support 21 fixed on the rack 7, two rotating rollers 22 rotatably connected to the support 21, and a driving assembly for driving the two rotating rollers 22 to rotate in the same direction, which can adopt a synchronous pulley and belt or chain wheel and chain structure, and in the present embodiment, the specific structure is not described in detail. The two rotating rollers 22 are coplanar, and a product rotating gap is formed between the two rotating rollers 22. The eddy current detection mechanism 2 further comprises an eddy current probe 25 arranged above the product rotating gap and a second linear module 23 for driving the eddy current probe 25 to reciprocate along the length direction of the product rotating gap. The second linear module 23 is fixed on the rack 7, and a detection bracket 24 is fixed on the output end of the second linear module 23. The eddy current probe 25 is fixed on the detection bracket 24.

[0035] When the eddy current detection mechanism 2 works, the two rotating rollers 22 drive the product to rotate, the eddy current probe 25 contacts the product gap and reciprocates along the axial direction of the product, so that the eddy current detection of the entire outer circumferential surface of the product can be completed.

[0036] In the present embodiment, as shown in the figure, Figure 1 The rack 7 is fixed with a rotating cylinder, the output end of the rotating cylinder is fixed with a rotating frame, the intermediate transfer platform 4 is fixed on the rotating frame, and the intermediate transfer platform 4 is arranged in two, and the two intermediate transfer platforms 4 are oppositely arranged.

[0037] When working, the feeding and transferring module 3 takes and places the product on the intermediate transfer platform 4 close to the eddy current detection mechanism 2, and the rotating cylinder rotates the rotating platform with the product to one side of the defective product storage groove 5.

[0038] The above structure reduces the moving distance of the discharging and transferring module 8, and can improve the working efficiency of the discharging and transferring module 8.

[0039] In the present embodiment, as shown in the figure, Figure 4 The good product discharging and stacking mechanism 6 comprises a truss manipulator 61 fixed on the rack 7 and a tray placing assembly arranged below the truss manipulator 61. The tray placing assembly is arranged in at least two, and comprises a tray loading platform 62 longitudinally and slidingly connected to the rack 7 and a third driving assembly arranged on the rack 7 for driving the tray loading platform 62 to ascend and descend. The third driving assembly can be a jacking cylinder or other lifting driving structure. The tray loading platform 62 is provided with foot pads 63 at the top of four corners respectively.

[0040] Specifically, the third driving assembly is arranged between the tray loading platform 62 and the rack 7 and is closed by an organ type protective cover 64.

[0041] The good product unloading and stacking mechanism 6 works, and a plurality of empty trays are stacked on one of the tray tables 62. The truss manipulator 61 takes and places the empty trays on another tray table 62. The unloading and transfer module 8 stacks the products into the empty trays. When the trays are full of products, the tray table 62 located below the empty tray rises to a certain height. The truss manipulator 61 takes a new empty tray and stacks it above the last full tray. The cycle is repeated. When the full trays are stacked to a certain number, the full trays are manually taken out.

[0042] The above structure does not need to be equipped with a stacking device to stack the products, so that the structure of the present application is more compact and the functions are more diverse.

[0043] The embodiment of the present application also provides a flaw detection method of the bearing roller automatic flaw detection equipment, which comprises the following steps:

[0044] The first driving assembly 15 adjusts the distance between the movable baffle 13 and the fixed baffle, so that the width of the storage chute is adapted to the length of the product;

[0045] The storage chute is filled with products;

[0046] The second driving assembly drives the sliding of the carrier plate 12, so that the inclined end of one of the storage chutes is separated from the blocking of the baffle and is aligned with the receiving jig 11. A plurality of products are sequentially slid from the storage chute into the receiving jig 11;

[0047] The feeding and transfer module 3 takes the products in the receiving jig 11 and places them into the eddy current detection mechanism 2 for eddy current detection. After detection, the feeding and transfer module 3 takes the products in the eddy current detection mechanism 2 and places them on the intermediate transfer table 4. The intermediate transfer table 4 transfers the products to one side of the defective product storage groove 5;

[0048] The good product tray unloading mechanism takes the trays to the target position. The unloading and transfer module 8 takes the defective products into the defective product storage groove 5 and stacks the good products into the trays according to the detection results.

[0049] The above only describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above embodiments. Any technical solution falling within the concept of the present application belongs to the protection scope of the present application. It should be noted that, for ordinary skilled persons in the technical field, some improvements and decorations without departing from the principles of the present application are also considered to be within the protection scope of the present application.

Claims

1. A bearing roller automatic inspection apparatus comprising a frame (7), characterized in that: The rack (7) is provided with an upper feeding mechanism (1), an eddy current detection mechanism (2), a transfer loading platform (4), a defective product storage groove (5), a good product unloading and stacking mechanism (6), an upper feeding and transfer module (3) for taking and placing the product on the upper feeding mechanism (1) to the eddy current detection mechanism (2) and taking and placing the product on the eddy current detection mechanism (2) to the transfer loading platform (4), and a lower feeding and transfer module (8) for taking and placing the product on the transfer loading platform (4) into the defective product storage groove (5) or the good product unloading and stacking mechanism (6), the upper feeding mechanism (1) comprises a loading plate (12) and a receiving jig (11) provided on the rack (7), the loading plate (12) is inclined downward towards the eddy current detection mechanism (2), a fixed baffle (14) is fixedly connected to the loading plate (12) towards the eddy current detection mechanism (2), the fixed baffles (14) are provided in plurality, the plurality of fixed baffles (14) are uniformly distributed on the loading plate (12) at intervals, a movable baffle (13) is slidingly connected to the loading plate (12) between every two adjacent fixed baffles (14), the movable baffle (13) is parallel to the fixed baffle (14), a first driving assembly (15) is provided on the loading plate (12) for driving the movable baffle (13) to slide, a storage chute is formed between each movable baffle (13) and one of the fixed baffles (14), a material blocking strip is further provided on the rack (7), the material blocking strip is in gap contact with the inclined end of the loading plate (12), the receiving jig (11) is located on one side of the material blocking strip and is in the same straight line with the material blocking strip, a second driving assembly is further provided on the rack (7) for driving the loading plate (12) to slide, so that the inclined end of each storage chute is aligned with the receiving jig (11) in turn. The first driving assembly (15) comprises side plates (151) fixed on both sides of the loading plate (12), a guide shaft (152) fixedly connected between the two side plates (151), a driving frame (154) slidingly connected on the guide shaft (152), and a lead screw (153) rotatably connected between the two side plates (151), a driving block is fixed on the driving frame (154), the driving block is threadedly connected with the lead screw (153), each movable baffle (13) is fixedly connected with the driving frame (154), the loading plate (12) is slidingly connected with the rack (7) through a slide rail pair, the second driving assembly comprises a first servo linear module fixed on the rack (7), the output end of the first servo linear module is fixedly connected with the loading plate (12), a longitudinal cylinder is fixed on the rack (7), and the receiving jig (11) is fixed on the output end of the longitudinal cylinder; A rotary cylinder is fixed on the rack (7), a rotary frame is fixed on the output end of the rotary cylinder, the transfer loading platform (4) is fixed on the rotary frame, and the transfer loading platform (4) is provided in two, and the two transfer loading platforms (4) are oppositely arranged.

2. The bearing roller automatic inspection apparatus according to claim 1, characterized by: The vortex detection mechanism (2) comprises a support (21) fixed on a rack (7), two rotating rollers (22) rotatably connected to the support (21), and a driving assembly for driving the two rotating rollers (22) to rotate in the same direction. The axis lines of the two rotating rollers (22) are coplanar, and a product rotating gap is formed between the two rotating rollers (22). The vortex detection mechanism (2) further comprises a vortex probe (25) arranged above the product rotating gap and a second linear module (23) for driving the vortex probe (25) to reciprocate along the length direction of the product rotating gap. The second linear module (23) is fixed on the rack (7), and a detection bracket (24) is fixed on the output end of the second linear module (23). The vortex probe (25) is fixed on the detection bracket (24).

3. The bearing roller automatic inspection apparatus according to claim 1, characterized by: The good product unloading and stacking mechanism (6) comprises a truss manipulator (61) fixed on the rack (7) and a tray placing assembly arranged below the truss manipulator (61). The tray placing assembly is provided in at least two. The tray placing assembly comprises a tray carrier (62) longitudinally and slidingly connected to the rack (7), and a third driving assembly arranged on the rack (7) for driving the tray carrier (62) to ascend and descend. Four corners of the top of the tray carrier (62) are respectively provided with foot pads (63).

4. The bearing roller automatic inspection apparatus according to claim 3, characterized by: The third driving assembly is closed by an organ type protective cover (64) arranged between the tray carrier (62) and the rack (7).

5. The method of claim 1-4, wherein: The method comprises the following steps: Adjust the distance between the movable baffle (13) and the fixed baffle by the first driving assembly (15) so that the width of the storage chute is adapted to the length of the product; Fill each storage chute with products; Drive the carrier plate (12) to slide by the second driving assembly so that the inclined end of one of the storage chutes is separated from the blocking of the baffle and is aligned with the receiving jig (11). A plurality of products are sequentially slid from the storage chute into the receiving jig (11); The feeding and transferring module (3) takes and places the products in the receiving jig (11) into the vortex detection mechanism (2) for vortex detection. After detection, the feeding and transferring module (3) takes and places the products in the vortex detection mechanism (2) onto the intermediate carrier (4), and the intermediate carrier (4) transfers the products to one side of the defective product storage groove (5); The good product tray unloading mechanism takes and places the tray to the target position. The unloading and transferring module (8) takes and places the defective products into the defective product storage groove (5) according to the detection results, and stacks the good products into the tray.

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