Screw detection device

Abstract

The invention relates to a screw detection device, and belongs to the technical field of screw detection, the screw detection device comprises a detection frame, the inner side of the detection frame is rotatably provided with a plurality of first screws and a plurality of second screws, and the plurality of first screws and the plurality of second screws are arranged in a staggered manner; the first screws and the second screws are arranged in a staggered mode and are opposite in thread rotating direction, the bottom of the detection frame is provided with a first driving mechanism which drives the second screws to rotate at the same time, the top of the detection frame is provided with a second driving mechanism which drives the first screws to rotate at the same time, and the upper side of the detection frame is provided with a top plate in a lifting mode. Lifting mechanisms are arranged at the two ends of the top plate correspondingly, a plurality of rotating rods are rotationally arranged on the lower side of the top plate, second electromagnets are arranged at the lower ends of the rotating rods correspondingly, and a third driving mechanism for driving the rotating rods to rotate at the same time is arranged on the upper side of the top plate.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of screw detection, and particularly relates to a screw detection device. BACKGROUND

[0002] At present, screws are widely used as mechanical parts and can be seen everywhere in life. Medical devices, furniture and household appliances all need to be connected by screws. In order to ensure the stability of the connection of the screws, the threads on the surface of the screws need to be detected.

[0003] For example, in the Chinese invention with the publication number CN108693190A and the name of a screw visual detection device, it specifically comprises a first driving source and a disc, the first driving source is connected with the disc and can drive the disc to rotate, a plurality of openings are arranged around the outer side wall of the disc, and a magnet for adsorbing a screw head is arranged in each opening; it further comprises a detection station, the disc can rotate to move the opening into the detection station, a light emitting element and a camera are arranged on the two sides of the detection station respectively, the light emitting element is arranged on the lower side of the disc, the light emitting element illuminates the detection station, and the camera is arranged towards the detection station. Although the above-mentioned prior art can detect the screw visually through the camera, it can only detect one side of the screw and cannot comprehensively detect the thread part of the screw. In order to improve the comprehensiveness of the detection of the screw, a screw detection device is needed. SUMMARY

[0004] The purpose of the application is to provide a screw detection device with simple structure and reasonable design to solve the above problems.

[0005] The application achieves the above-mentioned purpose through the following technical solutions: A screw detection device comprises a detection frame, a plurality of first screws and a plurality of second screws are arranged on the inner side of the detection frame, the plurality of first screws and the plurality of second screws are arranged alternately and the thread rotation directions of the first screws and the second screws are opposite, the gap between adjacent two first screws and second screws is greater than the diameter of the screw rod and smaller than the diameter of the screw nut, the thread spacing of the first screws and the second screws is consistent with the diameter of the screw nut, a first driving mechanism for driving the plurality of second screws to rotate is arranged on the bottom of the detection frame, a second driving mechanism for driving the plurality of first screws to rotate is arranged on the top of the detection frame, a top plate is arranged on the upper side of the detection frame and is arranged to be lifted, lifting mechanisms are arranged at the two ends of the top plate, a plurality of rotating rods are arranged on the lower side of the top plate and are arranged to be rotated, second electromagnets are arranged at the lower ends of the plurality of rotating rods, a third driving mechanism for driving the plurality of rotating rods to rotate is arranged on the upper side of the top plate, a detection mechanism is arranged on one side of the second electromagnet, and a collection mechanism is arranged on the other side of the second electromagnet.

[0006] As a further optimization scheme of the present application, the first driving mechanism comprises a first synchronous wheel fixedly sleeved at the lower end of the second screw rod, the outer side of the first synchronous wheel is commonly meshed with a first synchronous belt, and the lower end of the detection frame is fixedly provided with a first servo motor for driving rotation of one of the second screw rods.

[0007] As a further optimization scheme of the present application, the second driving mechanism comprises a second synchronous wheel fixedly sleeved at the upper end of the first screw rod, the outer side of the second synchronous wheel is commonly meshed with a second synchronous belt, and the upper end of the detection frame is fixedly provided with a second servo motor for driving rotation of one of the first screw rods.

[0008] As a further optimization scheme of the present application, the lifting mechanism comprises a fixed cylinder fixedly connected to the front and rear sides of the detection frame, and a pneumatic cylinder is fixedly arranged at the lower side of each fixed cylinder, and the output end of the pneumatic cylinder slides through the fixed cylinder to drive the lifting of the top plate.

[0009] As a further optimization scheme of the present application, the third driving mechanism comprises a third synchronous wheel fixedly sleeved at the upper end of the rotating rod, the outer side of the third synchronous wheel is commonly meshed with a third synchronous belt, and the upper side of the top plate is fixedly provided with a third servo motor for driving rotation of one of the rotating rods.

[0010] As a further optimization scheme of the present application, the detection mechanism comprises a horizontal plate fixedly arranged on one side of the two fixed cylinders, a plurality of mounting plates are fixedly arranged on one side of the horizontal plate through screws, an ultrasonic detection probe is arranged on one side of each mounting plate, and a data line electrically connected to the ultrasonic detection probe is arranged on the other side of each mounting plate.

[0011] As a further optimization scheme of the present application, the collection mechanism comprises a collection plate slidingly arranged on the upper side of the detection frame, a sliding groove slidingly connected to the collection plate is formed in the upper side of the detection frame, and a third electric telescopic rod for driving sliding of the collection plate is fixedly arranged on the two sides of the detection frame.

[0012] As a further optimization scheme of the present application, a plurality of first vertical columns are fixedly arranged at the bottom of the detection frame, a horizontal bottom plate is commonly fixedly arranged at the lower end of the first vertical columns, the detection frame is arranged on the upper side of the bottom plate in an inclined manner, a feeding hopper is fixedly arranged on the upper side of the bottom of the detection frame, and a rotating mechanism is arranged on the upper side of the top of the detection frame.

[0013] As a further optimization scheme of the present application, the material transferring mechanism comprises guide rails fixedly arranged on both sides of the upper end of the detection frame, the upper sides of the two guide rails are slidably provided with sliding plates, the upper ends of the detection frame are fixedly provided with second electric telescopic rods for driving the sliding plates to slide, the upper ends of the two sliding plates are fixedly provided with a fixed plate located above the detection frame, the upper side of the fixed plate is fixedly provided with a first electric telescopic rod, the output end of the first electric telescopic rod is fixedly provided with a vertically lifting lifting plate, and the lower side of the lifting plate is fixedly provided with a plurality of first electromagnets.

[0014] As a further optimization scheme of the present application, the upper side of the base plate is fixedly provided with a plurality of second vertical columns, the upper ends of the second vertical columns are fixedly provided with crossbars, a plurality of first rollers are arranged between the two crossbars, the upper sides of one end of the two crossbars are vertically fixedly provided with vertical rods, a fixed rod is fixedly arranged between the two vertical rods, a rotating drum is rotatably arranged on the fixed rod, a reverse hopper is fixedly arranged on one side of the rotating drum, a plurality of second rollers are arranged on the inner bottom of the reverse hopper, a base is fixedly arranged between a plurality of the vertical columns, a hydraulic cylinder is rotatably arranged on the upper side of the base, and the output end of the hydraulic cylinder is rotatably connected with the bottom of the reverse hopper.

[0015] The present application has the following advantages: In the present application, when the first screw and the second screw rotate in opposite directions, each screw can fall into the thread groove in the gap between the first screw and the second screw. When the first screw and the second screw move a row of screws below the second electromagnet, the first screw and the second screw stop rotating. The top plate is lowered by the air cylinder, the second electromagnet is lowered by the rotating rod on the lower side of the top plate, a plurality of second electromagnets attract a row of screws, the top plate is raised by the air cylinder, a plurality of second electromagnets drive a row of screws to separate from the first screw and the second screw, one of the rotating rods is rotated by the third servo motor, a plurality of rotating rods are synchronously rotated by the third synchronous belt and the third synchronous wheel, the threads on the surface of the screw are detected by the ultrasonic detection probe on one side of the screw during rotation, the screw is rotated for detection, the detection effect of the screw is improved, the collecting plate slides on the upper side of the detection frame when the screw is unqualified, the collecting plate slides into the lower side of the screw, the corresponding second electromagnet is de-energized and demagnetized, the unqualified screw falls onto the collecting plate for collection, the detection accuracy is improved, and the unqualified screw can be screened out, improving the detection efficiency.

[0016] In the application, the screws can be conveyed upward between the gaps between the first screw and the second screw through the reverse rotation of the first screw and the second screw, and since the gap between the first screw and the second screw is between the screw rod diameter and the nut diameter of the screw, the nut of the screw is clamped between the threads of the first screw and the second screw during the feeding of the screw, and the screw rod of the screw slides to the lower side of the first screw and the second screw due to the gravity, so that the screws are separated and each screw is conveyed with the nut on the upper screw and the screw rod on the lower screw, facilitating the subsequent neat packaging of the screws and improving the packaging efficiency of the screws. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the first overall structure schematic diagram of the application; Figure 2 is the second overall structure schematic diagram of the application; Figure 3 is the first partial overall structure schematic diagram of the application; Figure 4 is the second partial overall structure schematic diagram of the application; Figure 5 is the third partial overall structure schematic diagram of the application; Figure 6 is the fourth partial overall structure schematic diagram of the application; Figure 7 is the first partial overall structure schematic diagram of the application; Figure 3 is the second partial overall structure schematic diagram of the application; Figure 8 Figure 3 is the third partial overall structure schematic diagram of the application; Figure 9 is the fourth partial overall structure schematic diagram of the application; Figure 4 is the fifth partial overall structure schematic diagram of the application; Figure 10 Figure 4 is the sixth partial overall structure schematic diagram of the application; Figure 11 is the seventh partial overall structure schematic diagram of the application; Figure 5 is the eighth partial overall structure schematic diagram of the application; Figure 12 Figure 6 is the ninth partial overall structure schematic diagram of the application.

[0018] ​​​In the figure: 1, detection frame; 2, first screw rod; 3, second screw rod; 4, first driving mechanism; 401, first servo motor; 402, first synchronous belt; 403, first synchronous wheel; 5, fixed cylinder; 6, pneumatic cylinder; 7, top plate; 8, material rotating mechanism; 801, sliding plate; 802, fixed plate; 803, first electric telescopic rod; 804, lifting plate; 805, first electromagnet; 806, guide rail; 807, second electric telescopic rod; 9, third driving mechanism; 901, third servo motor; 902, third synchronous belt; 903, third synchronous wheel; 10, rotating rod; 11, second electromagnet; 12, second driving mechanism; 1201, second servo motor; 1202, second synchronous belt; 1203, second synchronous wheel; 13, collecting mechanism; 1301, collecting plate; 1302, chute; 1303, third electric telescopic rod; 14, detection mechanism; 1401, cross plate; 1402, mounting plate; 1403, ultrasonic detection probe; 1404, data line; 15, feeding hopper; 16, first vertical column; 17, bottom plate; 18, second vertical column; 19, cross rod; 20, hydraulic cylinder; 21, base; 22, inverted hopper; 23, first roller; 24, second roller; 25, vertical rod; 26, fixed rod; 27, rotating cylinder. DETAILED DESCRIPTION

[0019] The application will be described in further detail below with reference to the drawings. It is necessary to point out here that the following detailed description is only used to further illustrate the application and cannot be understood as limiting the scope of protection of the application. Those skilled in the art can make some non-essential improvements and adjustments to the application according to the above application content.

[0020] Example 1: as Figure 1 , Figure 2As shown, a screw detection device, including detection frame 1, detection frame 1 adopts square hollow structure, detection frame 1 is set up obliquely upwards, the upper side of the lower end of detection frame 1 is fixedly provided with a feeding hopper 15, the upper side of the bottom plate 17 is fixedly provided with a plurality of second columns 18, the upper end of the second column 18 is fixedly provided with a cross bar 19, a plurality of first roller shafts 23 are arranged between the two cross bars 19, the upper side of one end of the two cross bars 19 is vertically fixedly provided with a vertical rod 25, a fixed rod 26 is fixedly arranged between the two vertical rods 25, a rotating drum 27 is rotatably sleeved on the fixed rod 26, a reverse hopper 22 is fixedly arranged on one side of the rotating drum 27, a plurality of second roller shafts 24 are arranged on the inner bottom of the reverse hopper 22, a base 21 is fixedly arranged between the plurality of columns 18, a hydraulic cylinder 20 is rotatably arranged on the upper side of the base 21, the output end of the hydraulic cylinder 20 is rotatably connected with the bottom of the reverse hopper 22, in use, the storage hopper (not shown in the figure) storing the screws is placed on the upper side of the plurality of first roller shafts 23, then the storage hopper is pushed to the inner side of the reverse hopper 22, then the reverse hopper 22 and the rotating drum 27 on one side thereof are driven by the hydraulic cylinder 20 to rotate around the fixed rod 26, so that the reverse hopper 22 drives the storage hopper to incline, the screws inside the storage hopper are poured into the inner side of the feeding hopper 15, the screws are automatically fed, manual work is saved, and subsequent detection efficiency is improved.

[0021] As Figure 3 、 Figure 4 、 Figure 5 、 Figure 11As shown, the inner side of the detection frame 1 is provided with a plurality of first screws 2 and a plurality of second screws 3. The screws (not shown in the figure) are poured into the bottom of the detection frame 1 through the feeding hopper 15, and the screws at the bottom of the detection frame 1 can be respectively slid into the adjacent first screw 2 and second screw 3 through the opposite rotation of the first screw 2 and the second screw 3. The first screw 2 and the second screw 3 are provided with five, and the specific number is selected flexibly according to the process. The five first screws 2 and the five second screws 3 are staggered and the thread rotation directions are opposite. The gap between the adjacent first screw 2 and second screw 3 is greater than the diameter of the screw rod and less than the diameter of the screw nut. The thread pitch on the first screw 2 and the second screw 3 is consistent with the diameter of the screw nut, so that the thread groove on the first screw 2 and the second screw 3 can clamp the screw nut, which is convenient for positioning and feeding detection of each screw. In use, the screw rod of the screw can be driven to slide into the lower side of the first screw 2 and the second screw 3 through the first screw 2 and the second screw 3 during the rotation of the first screw 2 and the second screw 3, so that the screw nut of the screw falls into the thread groove on the first screw 2 and the second screw 3. Through the opposite rotation of the adjacent first screw 2 and the second screw 3, the thread grooves on the first screw 2 and the second screw 3 can correspond to each other, so that the screw nut of the screw is clamped on the inner side of the thread groove, which is convenient for the vertical screw. The bottom of the detection frame 1 is provided with a first driving mechanism 4 for driving a plurality of second screws 3 to rotate simultaneously. The first driving mechanism 4 includes a first synchronous wheel 403 fixedly sleeved on the lower end of the plurality of second screws 3. The outer side of the plurality of first synchronous wheels 403 is jointly meshed with a first synchronous belt 402. The lower end of the detection frame 1 is fixedly provided with a first servo motor 401 for driving one of the second screws 3 to rotate. In use, the first servo motor 401 drives one of the second screws 3 to rotate, so that the first synchronous wheel 403 at one end of the second screw 3 rotates, and in turn drives the first synchronous belt 402 on the outer side to rotate, so that the remaining first synchronous wheels 403 rotate synchronously. This can make the second screws 3 at the center of the plurality of first synchronous wheels 403 rotate simultaneously in one direction, which is convenient for the second screws 3 to drive the screws on the bottom of the detection frame 1 to feed, and improves the efficiency of subsequent detection.

[0022] As Figure 3 , Figure 5 , Figure 10As shown, the top of the detection frame 1 is provided with a second driving mechanism 12 for driving a plurality of first screw rods 2 to rotate simultaneously, the second driving mechanism 12 comprises a second synchronous wheel 1203 fixedly sleeved on the upper end of the plurality of first screw rods 2, the outer side of the plurality of second synchronous wheels 1203 is jointly meshed with a second synchronous belt 1202, and the upper end of the detection frame 1 is fixedly provided with a second servo motor 1201 for driving one of the first screw rods 2 to rotate, in use, the second servo motor 1201 drives one of the first screw rods 2 to rotate, so that the second synchronous wheel 1203 at one end of the first screw rod 2 rotates, and in turn drives the second synchronous belt 1202 on the outer side to rotate, so that the remaining second synchronous wheels 1203 rotate synchronously, so that the first screw rod 2 at the center of the plurality of second synchronous wheels 1203 rotates simultaneously in one direction, facilitating the first screw rod 2 to drive the screw nail feeding at the bottom of the detection frame 1, and the first screw rod 2 and the adjacent second screw rod 3 rotate in opposite directions, and the threads on the first screw rod 2 and the adjacent second screw rod 3 rotate in opposite directions, so that the threads on the first screw rod 2 and the adjacent second screw rod 3 cooperate to form a moving clamping groove, which can clamp the screw cap, thereby improving the screw detection efficiency.

[0023] As Figure 3 , Figure 4 , Figure 7 , Figure 8 , Figure 9As shown, the upper side of the detection frame 1 is provided with a top plate 7, the front and rear sides of the detection frame 1 are fixedly provided with fixed cylinders 5, the lower sides of the two fixed cylinders 5 are fixedly provided with pneumatic cylinders 6, the output ends of the pneumatic cylinders 6 slide through the fixed cylinders 5 to drive the top plate 7 to lift and lower, the lower side of the top plate 7 is rotatably provided with a plurality of rotating rods 10, the number of the rotating rods 10 in the embodiment is nine, and the specific number can be selected flexibly according to the process, the lower ends of the nine rotating rods 10 are provided with second electromagnets 11, the top plate 7 is driven to lift and lower by the pneumatic cylinders 6, thereby driving the nine rotating rods 10 on the top plate 7 to lift and lower, thereby driving the second electromagnets 11 at the lower ends of the nine rotating rods 10 to lift and lower, so that the nuts of the screws between the adjacent two first screws 2 and second screws 3 are attracted, and when the second electromagnets 11 are powered off, the nuts of the screws are separated from the second electromagnets 11, so that the screws fall into the adjacent two first screws 2 and second screws 3 again, the upper side of the top plate 7 is provided with a third driving mechanism 9 for simultaneously driving a plurality of rotating rods 10 to rotate, the third driving mechanism 9 comprises third synchronous wheels 903 fixedly sleeved on the upper ends of the rotating rods 10, the outer sides of the plurality of third synchronous wheels 903 are jointly meshed with a third synchronous belt 902, and the upper side of the top plate 7 is fixedly provided with a third servo motor 901 for driving one of the rotating rods 10 to rotate, in use, one of the rotating rods 10 is driven to rotate by the third servo motor 901, so that the third synchronous wheel 903 at one end of the rotating rod 10 rotates, thereby driving the third synchronous belt 902 on the outer side to rotate, so that the remaining third synchronous wheels 903 rotate synchronously, so that the rotating rods 10 at the centers of the plurality of third synchronous wheels 903 rotate simultaneously in one direction, thereby driving the second electromagnets 11 at the lower ends of the nine rotating rods 10 to rotate 360°, so as to facilitate 360° detection of the threads on the surface of the screws, improve the comprehensiveness of detection, and thereby improve the detection accuracy.

[0024] As Figure 3 , Figure 4 , Figure 7 , Figure 9As shown, one side of the second electromagnet 11 is provided with a detection mechanism 14, the detection mechanism 14 includes a horizontal plate 1401 fixedly arranged on one side of the two fixed cylinders 5, a plurality of mounting plates 1402 are fixedly arranged on one side of the horizontal plate 1401 through screws, and ultrasonic detection probes 1403 are arranged on one side of the plurality of mounting plates 1402. The other side of the plurality of mounting plates 1402 is provided with a data line 1404 electrically connected with the ultrasonic detection probe 1403, one end of the data line 1404 is electrically connected with a controller (not shown in the figure), and in use, when the second electromagnet 11 attracts the screw below, the air cylinder 6 drives the top plate 7 to rise, and then drives the nine rotating rods 10 on the top plate 7 to rise, and then drives the second electromagnet 11 at the lower end of the nine rotating rods 10 to rise, so that the nut of the screw between the adjacent two first screw rods 2 and the second screw rod 3 is sucked out, and then the rotating rod 10 rotates 360°, and then drives the second electromagnet 11 at the lower end of the rotating rod 10 to rotate 360° with the screw, so that the ultrasonic detection probe 1403 on one side of the screw can detect the screw for 360°, and the efficiency and accuracy of detection are improved.

[0025] As shown in Figure 3 、 Figure 7 , the other side of the second electromagnet 11 is provided with a collection mechanism 13, the collection mechanism 13 includes a collection plate 1301 slidingly arranged on the upper side of the detection frame 1, and a semicircular arc plate is formed on the lower side of the upper surface of the collection plate 1301. The screw falling to the collection plate 1301 can be collected, and the unqualified screw can be conveniently recycled. The upper side of the detection frame 1 is provided with a sliding groove 1302 in sliding connection with the collection plate 1301, and the two sides of the detection frame 1 are both fixedly provided with a third electric telescopic rod 1303 for driving the collection plate 1301 to slide. The third electric telescopic rod 1303 is electrically connected with the controller through wires (not shown in the figure). In use, when the ultrasonic detection probe 1403 detects the screw, if the screw is detected to be unqualified, the ultrasonic detection probe 1403 transmits to the controller through the data line 1404, and the controller judges the damage detection. The controller controls the third electric telescopic rod 1303 to work, and the third electric telescopic rod 1303 drives the collection plate 1301 to slide upwards along the upper side of the detection frame 1, so that the collection plate 1301 moves to the lower side of the screw attracted by the second electromagnet 11, and the unqualified screw can be conveniently collected.

[0026] Embodiment 2: further improved on the basis of embodiment 1, as shown in Figure 3 、 Figure 4 、 Figure 6 、 Figure 12As shown, the bottom of the detection frame 1 is fixedly provided with a plurality of first columns 16, the lower ends of the plurality of first columns 16 are commonly fixedly provided with a horizontally arranged bottom plate 17, the detection frame 1 is arranged obliquely upward on the upper side of the bottom plate 17, and a material turning mechanism 8 is arranged on the upper side of the top of the detection frame 1. The material turning mechanism 8 comprises guide rails 806 fixedly arranged on both sides of the upper end of the detection frame 1, a sliding plate 801 is slidably arranged on the upper side of each of the two guide rails 806, a second electric telescopic rod 807 is fixedly arranged on both sides of the upper end of the detection frame 1 and drives the sliding plate 801 to slide, a fixed plate 802 is commonly fixedly arranged on the upper ends of the two sliding plates 801 and is located above the detection frame 1, a first electric telescopic rod 803 is fixedly arranged on the upper side of the fixed plate 802, an elevating plate 804 vertically arranged is fixedly arranged on the output end of the first electric telescopic rod 803, a plurality of first electromagnets 805 are fixedly arranged on the lower side of the elevating plate 804, and one end of the first electromagnet 805 is electrically connected with the controller through a wire (not shown in the figure). In use, when the qualified screws are fed to the top end of the detection frame 1 through the first screw rod 2 and the second screw rod 3, the sliding plate 801 is driven to slide on the guide rail 806 through the second electric telescopic rod 807, and then the fixed plate 802 at the upper end of the sliding plate 801 is driven to slide, so that the fixed plate 802 slides to the top end of the detection frame 1. Then the elevating plate 804 is driven to descend through the first electric telescopic rod 803, so that the plurality of first electromagnets 805 on the lower side of the elevating plate 804 descend to the upper side of the screws on the top end of the detection frame 1, the screws are attracted through the first electromagnet 805, then the elevating plate 804 is driven to rise through the first electric telescopic rod 803, so that the plurality of first electromagnets 805 on the lower side of the elevating plate 804 drive the screws to rise, so that the screws slide out from between the adjacent first screw rod 2 and second screw rod 3. Then the sliding plate 801 is driven to slide upward on the guide rail 806 through the second electric telescopic rod 807, and then the first electromagnet 805 is de-energized, so that the plurality of qualified screws can fall off, facilitating subsequent packaging of the screws, and improving the neatness of the packaging through the neat screws, preventing the screws from being packaged in the packaging box in disorder, avoiding damage to the packaging box by the screws, and improving the storage capacity of the packaging box.

[0027] It should be noted that the screw detection device, in use, first through the trolley into the inside of the upper hopper 15 screw, through the upper hopper 15 into the bottom of the detection frame 1 screw upside, then through the first servo motor 401 drive one of the second screw rod 3 rotation, can make the first synchronous wheel 403 rotation of the second screw rod 3 one end, in turn drive the outside of the first synchronous belt 402 rotation, make the rest of the first synchronous wheel 403 rotation synchronous rotation, can make the second screw rod 3 center of a plurality of first synchronous wheel 403 simultaneously in one direction, at the same time through the second servo motor 1201 drive one of the first screw rod 2 rotation, can make the second synchronous wheel 1203 rotation of the first screw rod 2 one end, in turn drive the outside of the second synchronous belt 1202 rotation, make the rest of the second synchronous wheel 1203 rotation synchronous rotation, can make the first screw rod 2 center of a plurality of second synchronous wheel 1203 simultaneously in the opposite direction of the second screw rod 3 rotation, because the first screw rod 2 and adjacent second screw rod 3 on the thread rotation direction opposite, can make the first screw rod 2 and adjacent second screw rod 3 on the thread each other cooperation form a moving slot, can be set screw cap, make the screw vertical in the detection frame 1 conveying, when the screw moves to the second electromagnet 11 below, at this time the first screw rod 2 and the second screw rod 3 stop rotating, through the pneumatic cylinder 6 drive the top plate 7 down, make the top plate 7 downside of the rotating rod 10 and the second electromagnet 11 down, make a number of second electromagnet 11 attract a row of screw, then through the pneumatic cylinder 6 drive the top plate 7 up, make a number of second electromagnet 11 drive a row of screw away from the first screw rod 2 and the second screw rod 3, at this time through the third servo motor 901 drive one of the rotating rod 10 rotation, in turn through the third synchronous belt 902 and the third synchronous wheel 903 make a plurality of rotating rod 10 synchronous rotation, in the process of rotation, through the ultrasonic detection probe 1403 on the side of the screw thread detection of the screw surface, make the screw in the process of rotation for comprehensive detection, when the screw is unqualified, through the third electric telescopic rod 1303 drive the collection plate 1301 on the upside of the detection frame 1 sliding, make the collection plate 1301 slip into the screw below, can make the corresponding second electromagnet 11 power off demagnetization, make the corresponding unqualified screw drop to the collection plate 1301 on the collection, then through the pneumatic cylinder 6 drive the top plate 7 down, make the top plate 7 downside of a plurality of rotating rod 10 and the second electromagnet 11 down, make the second electromagnet 11 downside of the remaining qualified screw re fall into adjacent two first screw rod 2 and the second screw rod 3 between, then through the first servo motor 401 and the second servo motor 1201 re drive a plurality of first screw rod 2 and the second screw rod 3 synchronous rotation, make the screw continue to feed, when the qualified screw feed to the top end of the detection frame 1, at this time through the second electric telescopic rod 807 drive the sliding plate 801 on the guide rail 806 sliding, in turn drive the fixed plate 802 sliding of the sliding plate 801 upper end,Make the fixed plate 802 slide to the top end of the detection frame 1, then drive the lifting plate 804 to descend through the first electric telescopic rod 803, make the multiple first electromagnet 805 under the lifting plate 804 descend to the upper side of the screw at the top end of the detection frame 1, attract the screw through the first electromagnet 805, then drive the lifting plate 804 to ascend through the first electric telescopic rod 803, make the multiple first electromagnet 805 under the lifting plate 804 drive the screw to ascend, make the screw slide out from between the adjacent two first screw rods 2 and the second screw rod 3, then drive the sliding plate 801 to slide upward on the guide rail 806 through the second electric telescopic rod 807, then the first electromagnet 805 is powered off, so that the multiple qualified screws can be dropped, and subsequent packaging of the screws is facilitated.

[0028] The above-described embodiments only express several embodiments of the present application, which are described in detail and specifically, but cannot be understood as the limitation of the patent scope of the present application. It should be pointed out that, for ordinary skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, which all belong to the protection scope of the present application.

Claims

1. A screw detection device comprising a detection frame (1), characterized in that: The inner side of the detection frame (1) is rotationally provided with a plurality of first screw rods (2) and a plurality of second screw rods (3), the plurality of first screw rods (2) and the plurality of second screw rods (3) are staggered and oppositely threaded, the gap between adjacent two first screw rods (2) and second screw rods (3) is greater than the diameter of the screw rod and less than the diameter of the screw nut, the thread spacing on the first screw rod (2) and the second screw rod (3) is consistent with the diameter of the screw nut, the bottom of the detection frame (1) is provided with a first driving mechanism (4) for driving the plurality of second screw rods (3) to rotate simultaneously, the top of the detection frame (1) is provided with a second driving mechanism (12) for driving the plurality of first screw rods (2) to rotate simultaneously, the upper side of the detection frame (1) is provided with a top plate (7), both ends of the top plate (7) are provided with lifting mechanisms, the lower side of the top plate (7) is rotationally provided with a plurality of rotating rods (10), the lower end of each of the plurality of rotating rods (10) is provided with a second electromagnet (11), the upper side of the top plate (7) is provided with a third driving mechanism (9) for driving the plurality of rotating rods (10) to rotate simultaneously, one side of the second electromagnet (11) is provided with a detection mechanism (14), the other side of the second electromagnet (11) is provided with a collection mechanism (13).

2. The screw detection device of claim 1, wherein: The first driving mechanism (4) comprises a first synchronous wheel (403) fixedly sleeved on the lower end of the plurality of second screw rods (3), the outer sides of the plurality of first synchronous wheels (403) are commonly meshed with a first synchronous belt (402), and the lower end of the detection frame (1) is fixedly provided with a first servo motor (401) for driving one of the second screw rods (3) to rotate.

3. A screw detection device according to claim 2, characterized in that: The second driving mechanism (12) comprises a second synchronous wheel (1203) fixedly sleeved on the upper end of the plurality of first screw rods (2), the outer sides of the plurality of second synchronous wheels (1203) are commonly meshed with a second synchronous belt (1202), and the upper end of the detection frame (1) is fixedly provided with a second servo motor (1201) for driving one of the first screw rods (2) to rotate.

4. The screw detection device of claim 3, wherein: The lifting mechanism comprises a fixed cylinder (5) fixedly connected to the front and rear sides of the detection frame (1), and a pneumatic cylinder (6) fixedly arranged at the lower side of each of the two fixed cylinders (5), and the output end of the pneumatic cylinder (6) slides through the fixed cylinder (5) to drive the top plate (7) to lift.

5. A screw detection device according to claim 4, characterized in that: The third driving mechanism (9) comprises a third synchronous wheel (903) fixedly sleeved on the upper end of the plurality of rotating rods (10), the outer sides of the plurality of third synchronous wheels (903) are commonly meshed with a third synchronous belt (902), and the upper side of the top plate (7) is fixedly provided with a third servo motor (901) for driving one of the rotating rods (10) to rotate.

6. A screw detection device according to claim 5, characterized in that: The detection mechanism (14) includes a horizontal plate (1401) fixedly arranged on one side of the two fixed cylinders (5), one side of the horizontal plate (1401) is fixedly provided with a plurality of mounting plates (1402) by screws, one side of each of the mounting plates (1402) is provided with an ultrasonic detection probe (1403), and the other side of each of the mounting plates (1402) is provided with a data line (1404) electrically connected with the ultrasonic detection probe (1403).

7. A screw detection device according to claim 6, characterized in that: The collecting mechanism (13) includes a collecting plate (1301) slidingly arranged on the upper side of the detection frame (1), the upper side of the detection frame (1) is provided with a sliding groove (1302) in sliding connection with the collecting plate (1301), and the two sides of the detection frame (1) are fixedly provided with third electric telescopic rods (1303) for driving the collecting plate (1301) to slide.

8. A screw detection device according to any one of claims 1-7, characterized in that: The bottom of the detection frame (1) is fixedly provided with a plurality of first vertical columns (16), the lower ends of the first vertical columns (16) are fixedly provided with a horizontally arranged bottom plate (17) in common, the detection frame (1) is arranged obliquely upward on the upper side of the bottom plate (17), the upper side of the lower end of the detection frame (1) is fixedly provided with a feeding hopper (15), and the upper side of the upper end of the detection frame (1) is provided with a material rotating mechanism (8).

9. A screw detection device according to claim 8, characterized in that: The material rotating mechanism (8) includes guide rails (806) fixedly arranged on the two sides of the upper end of the detection frame (1), the upper sides of the two guide rails (806) are slidingly provided with sliding plates (801), the two sides of the upper end of the detection frame (1) are fixedly provided with second electric telescopic rods (807) for driving the sliding plates (801) to slide, the upper ends of the two sliding plates (801) are fixedly provided with a fixed plate (802) located above the detection frame (1) in common, the upper side of the fixed plate (802) is fixedly provided with a first electric telescopic rod (803), the output end of the first electric telescopic rod (803) is fixedly provided with a vertically lifting lifting plate (804), and the lower side of the lifting plate (804) is fixedly provided with a plurality of first electromagnets (805).

10. The screw detection device of claim 9, wherein: The upper side of the bottom plate (17) is fixedly provided with a plurality of second vertical columns (18), the upper ends of the second vertical columns (18) are fixedly provided with cross bars (19), a plurality of first roller shafts (23) are arranged between the two cross bars (19), vertical fixing rods (25) are vertically fixedly arranged on the upper sides of one end of the two cross bars (19), a fixing rod (26) is fixedly arranged between the two vertical fixing rods (25), a rotating drum (27) is rotatably arranged on the fixing rod (26), a reverse hopper (22) is fixedly arranged on one side of the rotating drum (27), a plurality of second roller shafts (24) are arranged on the inner bottom of the reverse hopper (22), a base (21) is fixedly arranged between the plurality of vertical columns (18), a hydraulic cylinder (20) is rotatably arranged on the upper side of the base (21), and the output end of the hydraulic cylinder (20) is rotatably connected with the bottom of the reverse hopper (22).

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