An automatic sorting and feeding device for screws

Abstract

The present invention discloses an automatic sorting and feeding device for screws, which relates to the technical field of screw sorting and feeding. It includes a working table, and a guiding sliding circular groove is provided on the upper side of the working table. A conveying mechanism for arranging scattered screws in a row is provided on the upper side of the working table. Before feeding the screws into the threaded through holes on the surface of the product, the arrangement of the threaded through holes on the surface of the product is judged by a camera, and the number and positions of the six moving components that need to move are determined, and the screws that need to be fed in one go are automatically sorted in advance. When feeding, the output end of the second motor rotates to drive the six material-passing components to rotate, so that the material-passing grooves are sequentially aligned below each arranged screw, and then the screws that need to be fed are fed into each threaded through hole of the product at one time, effectively preventing the phenomenon that when feeding single screws into each threaded through hole of the product in sequence, most of the time is wasted on the time of rotating and moving the product, resulting in low screw feeding efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of screw sorting and feeding, and specifically provides an automatic screw sorting and feeding device for screws. Background Art

[0002] A screw mainly consists of two parts: a head and a screw rod (a cylinder with external threads). The shape of the head is diverse, and common ones include flat head, round head, semi-round head, etc. The head of a flat-head screw is a plane, and this shape facilitates the installation of the screw at a position flush with the surface of the mating part. In the machinery manufacturing industry, screws are used for the assembly of various machines and equipment. Whether it is a large industrial machine tool, an automated production line equipment, or a small power tool, screws are essential connecting parts.

[0003] For products of different sizes, the number of screws used is different. Generally, small and lightweight products or components, such as the housing of small electronic devices, lightweight panels, etc., use two screws for fixation, and the two screws are placed diagonally. Medium-sized or heavier products, such as medium-sized mechanical components, the base and panel of electronic devices, etc., use four screws for fixation, and the four screws are distributed in a square. Large and heavy products or products that require high-precision fixation, such as large mechanical components, the base of heavy equipment, precision instruments, etc., use six screws for fixation, and the six screws are distributed in a rectangle.

[0004] However, the existing screw feeding equipment can only convey one screw into the threaded through-hole of the product at a time. When facing products with multiple threaded through-holes, it is necessary to rotate and move the product multiple times to align each threaded through-hole with the discharge port of the screw feeding device in sequence, and then feed each screw into each threaded through-hole of the product in sequence. This method of feeding single screws is inefficient, and most of the time is wasted on the time of rotating and moving the product, and it is impossible to quickly and effectively feed all the screws into each threaded through-hole of the product at one time.

[0005] Therefore, it is very necessary to design an automatic screw sorting and feeding device for screws that can feed all the screws into the product at one time. Summary of the Invention

[0006] The purpose of the present invention is to provide an automatic screw sorting and feeding device for screws to solve the problems raised in the above background art.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: an automatic sorting and feeding device for screws, comprising a work table and a guide slide circular groove is provided on the upper side of the work table, a conveying mechanism for arranging scattered screws into a row is provided on the upper side of the work table, a first motor is fixedly connected to the upper side of the work table, a connecting plate is fixedly connected to the output end of the first motor, a first sorting mechanism and a second sorting mechanism are respectively provided on both sides of the connecting plate for feeding the screws into the threaded through holes corresponding to the products at one time, a product placement table for placing products is provided on one side of the first motor, a support frame is provided on one side of the product placement table, a camera is fixedly connected to one end of the support frame, and the shooting end of the camera is downwardly aligned with the guide slide circular groove.

[0008] According to the above technical solution, a database is provided inside the camera, and identification photos of different arrangements of product threaded through holes are provided inside the database.

[0009] According to the above technical solution, the conveying mechanism includes a vibration plate fixedly connected to the upper side of the work table, a conveyor is provided on one side of the vibration plate, the input end of the conveyor is connected to the output end of the vibration plate, and the output end of the conveyor is provided with a discharge port.

[0010] According to the above technical solution, the first sorting mechanism includes a guide sliding block slidably connected to the inside of the guide sliding circular groove, a support ring is fixedly connected to the upper side of the guide sliding block, a positioning plate is fixedly connected to the upper side of the support ring, a rotating component is provided on the upper side of the positioning plate, a guide sliding component is provided on the upper side of the rotating component, six moving components for driving the screws to move and arrange are provided inside the guide sliding component, six material passing components for feeding the screws into the threaded through holes of the product and indirectly spraying oil on the threaded surface of the screws are provided on the lower side of the positioning plate, and a positioning cover plate is fixedly connected to the upper side of the positioning plate.

[0011] According to the above technical solution, the rotating component includes a second gear slidably connected to the upper side of the positioning plate, the outer side of the second gear is meshingly connected to the first gear, the inside of the support ring is fixedly connected to the second motor, and the output end of the second motor passes through the positioning plate and is fixedly connected to the first gear.

[0012] According to the above technical solution, the guide sliding assembly includes two fixed blocks fixedly connected to the lower side of the positioning cover plate, the lower sides of the fixed blocks are respectively fixedly connected to the first U-shaped plate and the second U-shaped plate, the interior of the positioning cover plate is slidably connected to two sliding blocks, the lower sides of the sliding blocks are respectively fixedly connected to the third U-shaped plate and the fourth U-shaped plate, the upper side of the second gear is fixedly connected to a hydraulic cylinder, and the output end of the hydraulic cylinder is fixedly connected to the fourth U-shaped plate.

[0013] According to the above technical solution, a first arc-shaped guide chute and a second arc-shaped guide chute are respectively arranged inside the positioning disk, and the four material feeding components are arranged inside the second arc-shaped guide chute, and the two material feeding components are arranged inside the first arc-shaped guide chute.

[0014] According to the above technical solution, upper guide chutes and lower guide chutes are arranged inside the first U-shaped plate, the second U-shaped plate, the third U-shaped plate and the fourth U-shaped plate. Upper avoidance grooves are arranged on the upper sides of both ends of the second U-shaped plate and the third U-shaped plate, and lower avoidance grooves are arranged on the lower sides of both ends of the first U-shaped plate and the fourth U-shaped plate.

[0015] According to the above technical solution, the moving component includes a first rubber sleeve slidably connected inside the upper guide chute. A first turntable is fixedly connected to the inner side of the first rubber sleeve. A nail loading cylinder is slidably connected to the inner side of the first turntable. A first bevel gear is fixedly connected to the lower side of the first turntable. A micro motor is arranged below the first bevel gear and the micro motor is fixedly connected to the nail loading cylinder. An output end of the nail loading cylinder is fixedly connected to a second bevel gear and the second bevel gear is meshed with the first bevel gear. A connecting cylinder is fixedly connected to the lower side of the first turntable. A second turntable is fixedly connected to the lower side of the connecting cylinder and the inner side of the second turntable is slidably connected to the nail loading cylinder. A second rubber sleeve is fixedly connected to the outer side of the second turntable, and the second rubber sleeve is slidably connected to the lower guide chute.

[0016] According to the above technical solution, the material feeding component includes a guide slide cylinder fixedly connected through the lower side of a second gear. A material feeding cylinder is fixedly connected to the lower side of the guide slide cylinder. Oil boxes are fixedly connected to both sides of the material feeding cylinder. Material feeding grooves are arranged inside the guide slide cylinder and the material feeding cylinder.

[0017] According to the above technical solution, two first avoidance grooves are evenly arranged on the inner wall of the material feeding groove. A rotating column is arranged inside each first avoidance groove. Rotating shafts are fixedly connected to both sides of the rotating column. A torsion spring is arranged on the outer side of the rotating shaft. One end of the torsion spring is fixedly connected to the rotating shaft and the other end is fixedly connected to the material feeding cylinder.

[0018] According to the above technical solution, a spring groove is arranged below the first avoidance groove. A spring is fixedly connected inside the spring groove. The other end of the spring is fixedly connected to an oil guiding column. A second oil passage groove is arranged on one side of the oil guiding column. A first oil passage groove is arranged inside the oil guiding column. An oil spray head is fixedly connected inside the first oil passage groove.

[0019] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0020] 1. Before feeding the screw into the threaded through-hole of the product, the arrangement of the threaded through-holes on the product surface is judged by the camera to determine the number and positions of the six moving components that need to move. The screws that need to be fed in one go are automatically sorted in advance. During feeding, the output end of the second motor rotates to drive the six material-passing components to rotate, so that the material-passing grooves are sequentially aligned below each arranged screw, and then the screws to be fed are fed into each threaded through-hole of the product at one time. This effectively prevents the situation that when feeding single screws into each threaded through-hole of the product in sequence, most of the time is wasted on the time of rotating and moving the product, resulting in low screw feeding efficiency, and achieves the effect of high feeding efficiency for multiple screws.

[0021] 2. The material-passing cylinder can not only guide the screws and feed them into the threaded through-holes of the product, but also, when the screws fall, due to the self-gravity of the screws, press down the rotating column to make it rotate, thereby indirectly driving the oil guide column to move downward, and then spraying the lubricating oil from the oil spray head onto the threaded surface of the screws. And the spraying time is before the screws fall into the threaded through-holes of the product, effectively preventing the lubricating oil on the threaded surface of the screws from being easily taken away by the transmission equipment during the vibration conveying process, resulting in the reduction of the lubricating oil on the threaded surface of the screws when the subsequent screws are fed into the threaded through-holes of the product, and improving the reliability of the subsequent screw connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0023] Figure 1 is a schematic diagram of the overall structure of an automatic sorting and feeding device for screws according to the present invention;

[0024] Figure 2 is a schematic diagram of the structure of the conveying mechanism in the present invention;

[0025] Figure 3 is a schematic diagram of the structure of the first sorting mechanism in the present invention;

[0026] Figure 4 is a schematic diagram of the structure of the rotating component and the guiding and sliding component in the present invention;

[0027] Figure 5 is a schematic diagram of the structure from the lower perspective of the positioning disk in the present invention;

[0028] Figure 6 is a schematic diagram of the internal structure of the guiding and sliding component in the present invention;

[0029] Figure 7 is a schematic diagram of the external structure of the moving component in the present invention;

[0030] Figure 8 Schematic diagram of the internal structure of the moving component in the present invention;

[0031] Figure 9 Schematic diagram of the external structure of the feeding component in the present invention;

[0032] Figure 10 Schematic diagram of the internal structure of the material-passing component in the present invention;

[0033] Figure 11 In the present invention Figure 10 Enlarged schematic diagram of area A.

[0034] In the figure: 1, working table; 2, guiding sliding circular groove;

[0035] 3, conveying mechanism; 31, vibrating disk; 32, conveyor; 33, discharge port;

[0036] 4, first sorting mechanism; 41, guiding sliding block; 42, support ring; 43, positioning disk; 431, first arc-shaped guiding sliding groove; 432, second arc-shaped guiding sliding groove; 44, positioning cover plate; 45, guiding sliding component; 451, hydraulic cylinder; 452, first U-shaped plate; 4521, upper guiding sliding groove; 4522, lower guiding sliding groove; 4523, lower avoidance groove; 4524, upper avoidance groove; 453, fixing block; 454, second U-shaped plate; 455, sliding block; 456, third U-shaped plate; 457, fourth U-shaped plate; 46, rotating component; 461, second motor; 462, first gear; 463, second gear; 47, material-passing component; 471, guiding sliding cylinder; 472, oil box; 473, material-passing cylinder; 4731, material-passing groove; 4732, first avoidance groove; 4733, first oil-passing groove; 4734, second oil-passing groove; 4735, spring groove; 474, rotating column; 475, torsion spring; 476, rotating shaft; 477, oil guiding column; 478, oil spray head; 479, spring; 48, moving component; 481, nail-loading cylinder; 482, first turntable; 483, first rubber sleeve; 484, first bevel gear; 485, connecting cylinder; 486, micro motor; 487, second bevel gear; 488, second rubber sleeve; 489, second turntable;

[0037] 5, first motor; 6, connecting plate; 7, second sorting mechanism; 8, support frame; 9, camera. Detailed implementation manners

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0039] Embodiment 1. Please refer to Figures 1-11 , the present invention provides a technical solution: an automatic sorting and feeding device for screws, including a workbench 1, and a guiding sliding circular groove 2 is arranged on the upper side of the workbench 1. A conveying mechanism 3 for arranging scattered screws in a row is arranged on the upper side of the workbench 1. A first motor 5 is fixedly connected to the upper side of the workbench 1. The output end of the first motor 5 is fixedly connected to a connecting plate 6. On both sides of the connecting plate 6, a first sorting mechanism 4 and a second sorting mechanism 7 for feeding screws into the corresponding threaded through holes of the product at one time are respectively arranged. A product placement table for placing the product is arranged on one side of the first motor 5. A support frame 8 is arranged on one side of the product placement table. One end of the support frame 8 is fixedly connected to a camera 9, and the shooting end of the camera 9 faces downward and is aligned with the guiding sliding circular groove 2.

[0040] Specifically, the rotation of the output end of the first motor 5 is used to drive the first sorting mechanism 4 and the second sorting mechanism 7 to rotate, so as to alternately perform sorting and feeding. The first sorting mechanism 4 and the second sorting mechanism 7 have the same structure. When the first sorting mechanism 4 arranges the screws, the second sorting mechanism 7 feeds the arranged screws at one time. After the feeding of the second sorting mechanism 7 is completed, the output end of the first motor 5 rotates 180 degrees to drive the arranged first sorting mechanism 4 to feed, and the second sorting mechanism 7 arranges the screws again, and sequentially and cyclically performs one-time screw sorting and feeding for the product. Before the first sorting mechanism 4 and the second sorting mechanism 7 perform sorting and feeding, the camera 9 will first take pictures of the hole position distribution of the product.

[0041] Please refer to Figure 2 , the conveying mechanism 3 includes a vibrating disk 31 fixedly connected to the upper side of the workbench 1. A conveyor 32 is arranged on one side of the vibrating disk 31. The input end of the conveyor 32 is connected to the output end of the vibrating disk 31. The output end of the conveyor 32 is provided with a discharge port 33.

[0042] Specifically, the vibrating disk 31 is used to automatically and orderly convey the scattered screws to the transmission end of the conveyor 32, and the conveyor 32 is used to convey a plurality of screws and sequentially drop them downward from the discharge port 33.

[0043] Please refer to Figure 3, the first sorting mechanism 4 includes a guide slider 41 slidably connected inside the guide sliding circular groove 2. A support ring 42 is fixedly connected to the upper side of the guide slider 41, a positioning disk 43 is fixedly connected to the upper side of the support ring 42, a rotating assembly 46 is provided on the upper side of the positioning disk 43, a guide sliding assembly 45 is provided on the upper side of the rotating assembly 46, six moving assemblies 48 for driving the screws to move and arrange are provided inside the guide sliding assembly 45, six feeding assemblies 47 for feeding the screws into the threaded through holes of the product and indirectly spraying oil on the threaded surfaces of the screws are provided on the lower side of the positioning disk 43, and a positioning cover plate 44 is fixedly connected to the upper side of the positioning disk 43.

[0044] Please refer to Figure 4 , the rotating assembly 46 includes a second gear 463 slidably connected to the upper side of the positioning disk 43. A first gear 462 is meshed and connected to the outside of the second gear 463. A second motor 461 is fixedly connected inside the support ring 42. The output end of the second motor 461 penetrates through the positioning disk 43 and is fixedly connected to the first gear 462.

[0045] Specifically, the rotation of the output end of the second motor 461 is used to drive the first gear 462 to rotate, thereby driving the second gear 463 to rotate, and further driving the six feeding assemblies 47 to rotate so that they move to the lower side of the screws to be unloaded.

[0046] Please refer to Figure 4 , the guide sliding assembly 45 includes two fixed blocks 453 fixedly connected to the lower side of the positioning cover plate 44. A first U-shaped plate 452 and a second U-shaped plate 454 are respectively fixedly connected to the lower sides of the fixed blocks 453. Two sliding blocks 455 are slidably connected inside the positioning cover plate 44. A third U-shaped plate 456 and a fourth U-shaped plate 457 are respectively fixedly connected to the lower sides of the sliding blocks 455. A hydraulic cylinder 451 is fixedly connected to the upper side of the second gear 463. The output end of the hydraulic cylinder 451 is fixedly connected to the fourth U-shaped plate 457.

[0047] Specifically, when the output end of the hydraulic cylinder 451 fully extends, the guide sliding cavity formed by the first U-shaped plate 452, the second U-shaped plate 454, the third U-shaped plate 456 and the fourth U-shaped plate 457 forms a rectangle. When the output end of the hydraulic cylinder 451 fully retracts, the guide sliding cavity formed by the first U-shaped plate 452, the second U-shaped plate 454, the third U-shaped plate 456 and the fourth U-shaped plate 457 forms a square.

[0048] Please refer to Figure 5 , the inside of the positioning disk 43 is respectively provided with a first arc-shaped guide sliding groove 431 and a second arc-shaped guide sliding groove 432. Four feeding assemblies 47 are arranged inside the second arc-shaped guide sliding groove 432, and two feeding assemblies 47 are arranged inside the first arc-shaped guide sliding groove 431.

[0049] Specifically, the first arc-shaped guide chute 431 and the second arc-shaped guide chute 432 are used to avoid and guide the six material passing components 47, preventing the six material passing components 47 from hitting the positioning disk 43 when rotating.

[0050] Please refer to Figure 6 , upper guide chutes 4521 and lower guide chutes 4522 are provided inside the first U-shaped plate 452, the second U-shaped plate 454, the third U-shaped plate 456 and the fourth U-shaped plate 457. Upper avoidance grooves 4524 are provided on the upper sides of both ends of the second U-shaped plate 454 and the third U-shaped plate 456, and lower avoidance grooves 4523 are provided on the lower sides of both ends of the first U-shaped plate 452 and the fourth U-shaped plate 457.

[0051] Specifically, the upper guide chute 4521 and the lower guide chute 4522 are used to guide the moving component 48 to slide inside the rectangular or square cavity surrounded by the first U-shaped plate 452, the second U-shaped plate 454, the third U-shaped plate 456 and the fourth U-shaped plate 457. When the hydraulic cylinder 451 is fully retracted, both ends of the second U-shaped plate 454 and the third U-shaped plate 456 are inserted into the lower avoidance groove 4523, and both ends of the first U-shaped plate 452 and the fourth U-shaped plate 457 are inserted into the upper avoidance groove 4524.

[0052] Please refer to Figure 7 and Figure 8 , the moving component 48 includes a first rubber sleeve 483 slidably connected inside the upper guide chute 4521. A first turntable 482 is fixedly connected to the inner side of the first rubber sleeve 483. A nail loading cylinder 481 is slidably connected to the inner side of the first turntable 482. A first bevel gear 484 is fixedly connected to the lower side of the first turntable 482. A micro motor 486 is provided below the first bevel gear 484 and the micro motor 486 is fixedly connected to the nail loading cylinder 481. An output end of the nail loading cylinder 481 is fixedly connected to a second bevel gear 487 and the second bevel gear 487 is meshed with the first bevel gear 484. A connecting cylinder 485 is fixedly connected to the lower side of the first turntable 482. A second turntable 489 is fixedly connected to the lower side of the connecting cylinder 485 and the inner side of the second turntable 489 is slidably connected to the nail loading cylinder 481. A second rubber sleeve 488 is fixedly connected to the outer side of the second turntable 489, and the second rubber sleeve 488 is slidably connected to the lower guide chute 4522.

[0053] Specifically, the nail loading cylinder 481 is used to place the screws dropped from the inside of the discharge port 33. The rotation of the output end of the micro motor 486 is used to control the rotation of the second bevel gear 487, thereby driving the rotation of the first bevel gear 484. While the first bevel gear 484 rotates, it drives the first rubber sleeve 483 and the second rubber sleeve 488 to rotate, so that the first rubber sleeve 483 and the second rubber sleeve 488 rotate inside the upper guide chute 4521 and the lower guide chute 4522 respectively, causing the screws to slide inside the rectangular or square cavity for arrangement.

[0054]

[0054] In the initial state, the six moving components 48 are arranged in a row. When it is necessary to load the screws into the interior of the nail loading cylinder 481, the six moving components 48 slide simultaneously, causing the first nail loading cylinder 481 to move below the discharge port 33. After the first nail loading cylinder 481 is loaded with screws, the output end of the micro motor 486 starts to rotate and drives it to slide to the area where blanking is required. The remaining five moving components 48 slide simultaneously again, causing the second nail loading cylinder 481 to move below the discharge port 33, and so on to nail each nail loading cylinder 481. When the screws in the nail loading cylinder 481 have been completely discharged, the nail loading cylinder 481 slides again to be arranged behind the previous nail loading cylinder 481 that has not been nailed, and the subsequent nail loading cylinders 481 line up in sequence, waiting for the next batch of nail arrangements.

[0055]

[0055] The camera 9 is used to take a photograph and form an image of the upper part of the product. A database is provided inside the camera 9, and identification photos of different arrangement modes of the product thread through holes are provided inside the database. After the camera 9 takes a photograph of the upper part of the product, it will compare it with the identification photos of different arrangement modes of the product thread through holes in the internal database, pre-identify the arrangement mode of the product thread through holes, and classify the arrangement mode of this thread through hole into three different arrangement modes: two-hole diagonal, four-hole square, and six-hole rectangle according to the obtained photograph of the upper part of the product.

[0056]

[0056] When the camera 9 determines that the arrangement mode of the product thread through holes is two-hole diagonal, two nail loading cylinders 481 respectively move below the discharge port 33 in sequence for nailing. After the nailing is completed, the first nail loading cylinder 481 drives the screw to move to the upper right corner of the rectangular cavity, and the second nail loading cylinder 481 drives the screw to move to the lower left corner of the rectangular cavity. When the two screws are arranged, since the lower part of the screw is solid and cannot fall downward, at this time, the output end of the first motor 5 rotates 180 degrees, driving the two arranged screws to rotate above the two thread through holes of the product respectively. While the output end of the first motor 5 rotates, the synchronous rotation of the output end of the second motor 461 drives the six material feeding components 47 to rotate. While the output end of the first motor 5 rotates 180 degrees, the six material feeding components 47 just move below the screws to be discharged. At this time, the two screws can be fed into the two-hole diagonal thread through holes of the product through the material feeding slots 4731 at one time.

[0057] When the camera 9 determines that the arrangement of the threaded through-holes of the product is a four-hole square, the output end of the hydraulic cylinder 451 retracts completely. The guiding and sliding cavity formed by the first U-shaped plate 452, the second U-shaped plate 454, the third U-shaped plate 456, and the fourth U-shaped plate 457 forms a square. The four nail loading cylinders 481 respectively move to the positions below the discharge port 33 in sequence for nail loading. After the nail loading is completed, the first nail loading cylinder 481 drives the screw to move to the upper left corner of the square cavity, the second nail loading cylinder 481 drives the screw to move to the upper right corner of the square cavity, the third nail loading cylinder 481 drives the screw to move to the lower right corner of the square cavity, and the fourth nail loading cylinder 481 drives the screw to move to the upper left corner of the square cavity. When the four screws are arranged, since the lower part of the screw is solid and cannot fall downward, at this time, the output end of the first motor 5 rotates 180 degrees, driving the four arranged screws to rotate to the positions above the four threaded through-holes of the product respectively. While the output end of the first motor 5 rotates, the synchronous rotation of the output end of the second motor 461 drives the six material feeding components 47 to rotate. While the output end of the first motor 5 rotates 180 degrees, the six material feeding components 47 just move to the positions below the screws to be fed. At this time, the four screws can be fed into the four-hole square threaded through-holes of the product through the material feeding slots 4731 at one time.

[0058] When the camera 9 determines that the arrangement of the threaded through-holes of the product is a six-hole rectangle, the output end of the hydraulic cylinder 451 extends completely. The guiding and sliding cavity formed by the first U-shaped plate 452, the second U-shaped plate 454, the third U-shaped plate 456, and the fourth U-shaped plate 457 forms a rectangle. The six nail loading cylinders 481 respectively move to the positions below the discharge port 33 in sequence for nail loading. After the nail loading is completed, the first nail loading cylinder 481 drives the screw to move to the upper left corner of the rectangular cavity, the second nail loading cylinder 481 drives the screw to move to the middle of the upper part of the rectangular cavity, the third nail loading cylinder 481 drives the screw to move to the upper right corner of the rectangular cavity, the fourth nail loading cylinder 481 drives the screw to move to the lower right corner of the rectangular cavity, the fifth nail loading cylinder 481 drives the screw to move to the middle of the lower part of the rectangular cavity, and the sixth nail loading cylinder 481 drives the screw to move to the lower left corner of the rectangular cavity. When the six screws are arranged, since the lower part of the screw is solid and cannot fall downward, at this time, the output end of the first motor 5 rotates 180 degrees, driving the six arranged screws to rotate to the positions above the six threaded through-holes of the product respectively. While the output end of the first motor 5 rotates, the synchronous rotation of the output end of the second motor 461 drives the six material feeding components 47 to rotate. While the output end of the first motor 5 rotates 180 degrees, the six material feeding components 47 just move to the positions below the screws to be fed. At this time, the six screws can be fed into the six-hole rectangular threaded through-holes of the product through the material feeding slots 4731 at one time.

[0059] Before the screw is fed into the threaded through-hole of the product, the arrangement of the threaded through-holes on the surface of the product is judged by the camera 9, and the number and positions of the six moving components 48 that need to move are determined. The screws that need to be fed in one go are automatically sorted in advance. During feeding, the output end of the second motor 461 rotates to drive the six material-passing components 47 to rotate, so that the material-passing grooves 4731 are aligned below each arranged screw in turn, and then the screws that need to be fed are fed into each threaded through-hole of the product at one time, effectively preventing the situation that when single screws are fed into each threaded through-hole of the product in turn, most of the time is wasted on the time of rotating and moving the product, resulting in low screw feeding efficiency, and achieving the effect of high feeding efficiency of multiple screws.

[0060] Embodiment 2. Usually, in order to reduce the friction coefficient between the threads and enable the screw to generate a greater pre-tightening force under the same tightening torque, lubricating oil is sprayed on the surface of the threads. Due to the spraying of lubricating oil on the thread surface, during the vibration conveying process of the screw, the lubricating oil on the screw thread surface is easily taken away by the conveying equipment, resulting in the reduction of the lubricating oil on the screw thread surface when the subsequent screw is fed into the threaded through-hole of the product, and further resulting in the reduction of the pre-tightening force of the subsequent screw and poor connection reliability. Therefore, the following structure is designed to solve the above technical problems.

[0061] Please refer to Figures 9-11 , the material-passing component 47 includes a guide sliding cylinder 471 fixedly connected through the lower side of the second gear 463. A material-passing cylinder 473 is fixedly connected to the lower side of the guide sliding cylinder 471. Oil boxes 472 are fixedly connected to both sides of the material-passing cylinder 473. Material-passing grooves 4731 are provided inside the guide sliding cylinder 471 and the material-passing cylinder 473.

[0062] Specifically, the oil box 472 is used to store lubricating oil, and the material-passing groove 4731 is used to pass the screw.

[0063] Two first avoidance grooves 4732 are evenly provided on the inner wall of the material-passing groove 4731. A rotating column 474 is provided inside each first avoidance groove 4732. Rotating shafts 476 are fixedly connected to both sides of the rotating column 474. A torsion spring 475 is provided outside the rotating shaft 476. One end of the torsion spring 475 is fixedly connected to the rotating shaft 476 and the other end is fixedly connected to the material-passing cylinder 473.

[0064] Specifically, the rotating column 474 can rotate inside the first avoidance groove 4732 through the rotating shaft 476. In the initial state, the rotating column 474 is ejected by the torsion spring 475 and is in a horizontal placement state.

[0065] A spring groove 4735 is provided on the lower side of the first avoidance groove 4732. A spring 479 is fixedly connected inside the spring groove 4735. The other end of the spring 479 is fixedly connected to an oil guiding column 477. A second oil passage groove 4734 is provided on one side of the oil guiding column 477. A first oil passage groove 4733 is provided inside the oil guiding column 477. An oil spray head 478 is fixedly connected inside the first oil passage groove 4733.

[0066] Specifically, the oil guiding column 477 is used to move up and down inside the spring groove 4735. In the initial state, the spring 479 pushes out the oil guiding column 477, making its top protrude inside the first avoidance groove 4732. The first oil passage groove 4733 is not connected to the second oil passage groove 4734. The second oil passage groove 4734 is used to lead out the lubricating oil inside the oil box 472. The oil spray head 478 is used to spray the lubricating oil inside the first oil passage groove 4733 on the surface of the screw thread.

[0067] When the screw falls into the material passing groove 4731, since the gravity of the screw is greater than the elastic force of the torsion spring 475, the head of the screw squeezes the oil guiding column 477 downward, causing the oil guiding column 477 to bend 90 degrees and completely enter the first avoidance groove 4732. At the same time, the spherical surface of the rotating column 474 squeezes the spherical surface of the oil guiding column 477, driving the oil guiding column 477 to move downward. The spring 479 is compressed. When the spring 479 is completely compressed, the first oil passage groove 4733 is connected to the second oil passage groove 4734. The second oil passage groove 4734 is used to lead the lubricating oil inside the oil box 472 into the first oil passage groove 4733. The oil spray head 478 then sprays the lubricating oil inside the first oil passage groove 4733 on the surface of the screw thread. The screw sprayed with lubricating oil falls into the threaded through hole of the product. At this time, the rotating column 474 is driven by the torsion spring 475 to reset, the oil guiding column 477 is driven by the spring 479 to reset, and the oil spray head 478 no longer sprays lubricating oil.

[0068] The material passing cylinder 473 can not only guide the screw and lead it into the threaded through hole of the product, but also, when the screw falls, press down the rotating column 474 by the gravity of the screw itself, causing it to rotate, thereby indirectly driving the oil guiding column 477 to move downward, and then making the lubricating oil spray from the oil spray head 478 onto the screw thread surface. And the oil spraying time is before the screw falls into the threaded through hole of the product, effectively preventing the lubricating oil on the screw thread surface from being easily taken away by the conveying equipment during the vibration conveying process of the screw, thus avoiding the phenomenon that the lubricating oil on the screw thread surface is reduced when the screw is subsequently sent into the threaded through hole of the product, and improving the reliability of the subsequent screw connection.

[0069] It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0070] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art may still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An automatic sorting and feeding device for screws, including a workbench (1), and a guiding sliding circular groove (2) is arranged on the upper side of the workbench (1), characterized in that, On the upper side of the workbench (1), there is a conveying mechanism (3) for arranging scattered screws in a row. On the upper side of the workbench (1), a first motor (5) is fixedly connected. The output end of the first motor (5) is fixedly connected with a connecting plate (6). On both sides of the connecting plate (6), there are respectively a first sorting mechanism (4) and a second sorting mechanism (7) for feeding screws into the corresponding threaded through holes of the product at one time. On one side of the first motor (5), there is a product placement table for placing the product. On one side of the product placement table, there is a support frame (8). One end of the support frame (8) is fixedly connected with a camera (9), and the shooting end of the camera (9) faces downward and is aligned with the guiding sliding circular groove (2); The first sorting mechanism (4) includes a guiding slider (41) slidably connected inside the guiding sliding circular groove (2). On the upper side of the guiding slider (41), a support ring (42) is fixedly connected. On the upper side of the support ring (42), a positioning disk (43) is fixedly connected. On the upper side of the positioning disk (43), there is a rotating assembly (46). On the upper side of the rotating assembly (46), there is a guiding sliding assembly (45). Inside the guiding sliding assembly (45), there are six moving assemblies (48) for driving the screws to move and arrange. On the lower side of the positioning disk (43), there are six feeding assemblies (47) for feeding the screws into the threaded through holes of the product and indirectly spraying oil on the threaded surfaces of the screws. On the upper side of the positioning disk (43), a positioning cover plate (44) is fixedly connected; The rotating assembly (46) includes a second gear (463) slidably connected to the upper side of the positioning disk (43). The outer side of the second gear (463) is meshed with a first gear (462). Inside the support ring (42), a second motor (461) is fixedly connected. The output end of the second motor (461) penetrates the positioning disk (43) and is fixedly connected with the first gear (462); The guiding sliding assembly (45) includes two fixed blocks (453) fixedly connected to the lower side of the positioning cover plate (44). The lower sides of the fixed blocks (453) are respectively fixedly connected with a first U-shaped plate (452) and a second U-shaped plate (454). Inside the positioning cover plate (44), two sliding blocks (455) are slidably connected. The lower sides of the sliding blocks (455) are respectively fixedly connected with a third U-shaped plate (456) and a fourth U-shaped plate (457). On the upper side of the second gear (463), a hydraulic cylinder (451) is fixedly connected. The output end of the hydraulic cylinder (451) is fixedly connected with the fourth U-shaped plate (457); The material feeding component (47) includes a guide sliding cylinder (471) fixedly connected to the lower side of the second gear (463) through, a material feeding cylinder (473) is fixedly connected to the lower side of the guide sliding cylinder (471), oil boxes (472) are fixedly connected to both sides of the material feeding cylinder (473), material feeding grooves (4731) are provided inside both the guide sliding cylinder (471) and the material feeding cylinder (473), two first avoidance grooves (4732) are evenly provided on the inner wall of the material feeding groove (4731), a rotating column (474) is provided inside each first avoidance groove (4732), and rotating shafts (476) are fixedly connected to both sides of the rotating column (474); A torsion spring (475) is provided outside the rotating shaft (476), one end of the torsion spring (475) is fixedly connected to the rotating shaft (476) and the other end is fixedly connected to the material feeding cylinder (473), a spring groove (4735) is provided below the first avoidance groove (4732), a spring (479) is fixedly connected inside the spring groove (4735), the other end of the spring (479) is fixedly connected to an oil guiding column (477), a second oil passage groove (4734) is provided on one side of the oil guiding column (477), a first oil passage groove (4733) is provided inside the oil guiding column (477), and an oil spray head (478) is fixedly connected inside the first oil passage groove (4733).

2. The automatic sorting and feeding device for screws according to claim 1, characterized in that, The conveying mechanism (3) includes a vibrating disk (31) fixedly connected to the upper side of the workbench (1), a conveyor (32) is provided on one side of the vibrating disk (31), the input end of the conveyor (32) is connected to the output end of the vibrating disk (31), and a discharge port (33) is provided at the output end of the conveyor (32).

3. The automatic sorting and feeding device for screws according to claim 1, characterized in that, A first arc-shaped guide chute (431) and a second arc-shaped guide chute (432) are respectively provided inside the positioning disk (43), and four of the material feeding components (47) are provided inside the second arc-shaped guide chute (432), and two of the material feeding components (47) are provided inside the first arc-shaped guide chute (431).

4. The automatic sorting and feeding device for screws according to claim 3, wherein, Upper guide chutes (4521) and lower guide chutes (4522) are provided inside the first U-shaped plate (452), the second U-shaped plate (454), the third U-shaped plate (456) and the fourth U-shaped plate (457), upper avoidance grooves (4524) are provided on the upper sides of both ends of the second U-shaped plate (454) and the third U-shaped plate (456), and lower avoidance grooves (4523) are provided on the lower sides of both ends of the first U-shaped plate (452) and the fourth U-shaped plate (457).

5. The automatic sorting and feeding device for screws according to claim 4, wherein, The moving component (48) includes a first rubber sleeve (483) slidably connected inside the upper guide chute (4521), a first turntable (482) is fixedly connected to the inner side of the first rubber sleeve (483), a nail loading cylinder (481) is slidably connected to the inner side of the first turntable (482), a first bevel gear (484) is fixedly connected to the lower side of the first turntable (482), a micro motor (486) is provided below the first bevel gear (484) and the micro motor (486) is fixedly connected to the nail loading cylinder (481).

6. The automatic sorting and feeding device for screws according to claim 5, characterized in that, The output end of the stapling cylinder (481) is fixedly connected with a second bevel gear (487), and the second bevel gear (487) is meshed and connected with the first bevel gear (484). A connecting cylinder (485) is fixedly connected to the lower side of the first turntable (482). A second turntable (489) is fixedly connected to the lower side of the connecting cylinder (485), and the inner side of the second turntable (489) is slidably connected with the stapling cylinder (481). A second rubber sleeve (488) is fixedly connected to the outer side of the second turntable (489), and the second rubber sleeve (488) is slidably connected with the lower guide chute (4522).

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