Anti-skid rivet nut and detection and screening equipment thereof

Abstract

The application discloses an anti-skid rivet nut and a detection screening device thereof, and relates to the technical field of rivet nut production and manufacturing. The anti-skid rivet nut detection screening device comprises a device body, a material collecting mechanism installed on the device body and used for collecting and discharging rivet nuts one by one, a conveying mechanism used for continuously conveying the rivet nuts, and a detection screening mechanism used for optically screening the rivet nuts. The application can sequentially realize the collection of the rivet nuts, the one-by-one feeding of the collected rivet nuts, the batch conveying of the one-by-one fed rivet nuts, and the adjustment and alignment of the rivet nuts during the batch conveying of the rivet nuts. The above process is continuous and uninterrupted, effectively shortens the time consumed by the discontinuous conveying process and the complicated adjustment and alignment process during the process from the electroplating treatment and drying to the optical screening and manual full inspection of the rivet nuts, and improves the overall detection and screening efficiency.

Description

TECHNICAL FIELD

[0001] The application relates to the rivet nut manufacturing technology field, in particular to an anti-skid rivet nut and a detection and screening device thereof. BACKGROUND

[0002] The rivet nut, also known as a pull rivet nut or a pull cap, is used in the fastening field of various metal plate and pipe manufacturing industries, and is widely used in the assembly of automobile, aviation, railway, refrigeration, elevator, switch, instrument, furniture, decoration and other electromechanical and light industry products, and is also applied to the sealing process of the battery pack of new energy batteries. The rivet nut is developed to solve the problems of easy melting of welded nuts of metal thin plates and thin pipes, easy welding deformation of base materials, and easy slipping of internal threads of tapping, and does not need to tap internal threads or weld nuts, is firmly riveted, has high efficiency and is convenient to use.

[0003] In the related art, the rivet nut generally comprises a head flange and a rod part integrally connected with the head flange, and a plurality of half-rivet structures are arranged at the connection between the head flange and the rod part and are uniformly distributed along the outer circumference of the rod part. In the production and manufacturing process of the rivet nut in the related art, the following process steps are generally required: S1, wire drawing; S2, wire annealing; S3, surface phosphating treatment; S4, cold upsetting forming; S5, nut tapping; S6, heat treatment; S7, nut electroplating; S8, optical screening, manual full inspection and packaging. As described in the production process of a rivet nut in the application publication No. CN113857783A, during the electroplating and optical screening of the rivet nut (such as the rivet nut described above), the heat-treated rivet nut is first placed in an electroplating tank, an electroplating solution is added to the electroplating tank, the electroplating solution covers the rivet nut, and electroplating treatment is performed under certain temperature conditions. After a period of electroplating, the rivet nut is taken out and dried. Then, the dried rivet nut is placed on an optical camera, the optical camera performs full inspection on the rivet nut product size, half-rivet structure and surface burr, and after the inspection is qualified, manual detection is performed. After the manual detection is qualified, the rivet nut is packaged, and if the detection is unqualified, the rivet nut is scrapped.

[0004] In the related art, in the actual production process of the rivet nut, the electroplated rivet nut generally still has electroplating solution, which needs to be cleaned before drying, and then dried. The dried rivet nut generally needs to be manually or mechanically transferred to the detection platform of the optical camera, and after the rivet nut is transferred to the detection platform, it needs to be manually or mechanically adjusted and fixed to enable the optical camera to effectively image. Since the rivet nut is produced in large quantities in the factory, the transfer efficiency of the rivet nut from electroplating to optical screening and manual inspection is low. When the dried rivet nut is transferred from the bin to the detection platform of the optical camera, the rivet nut is in a scattered state and needs to be manually / mechanically adjusted and fixed, which takes a long time to adjust the rivet nut, the overall detection and screening efficiency is not high, and the overall production and manufacturing efficiency of the rivet nut is affected. SUMMARY

[0005] To improve the problem of low transfer efficiency of the rivet nut from electroplating to optical screening and manual inspection in the conventional technology, and long time for optical screening adjustment and fixing, the application provides a slip-resistant rivet nut and a detection and screening device thereof.

[0006] The application provides a slip-resistant rivet nut detection and screening device, which adopts the following technical scheme:

[0007] A slip-resistant rivet nut detection and screening device, comprising a device body, a material collecting mechanism for collecting and discharging rivet nuts one by one, a transmission mechanism for continuously conveying rivet nuts, and a detection and screening mechanism for optically screening rivet nuts are installed on the device body; the transmission mechanism comprises a ring-shaped transmission rail, a plurality of transmission discs slidingly assembled on the transmission rail, and a driving assembly for driving the transmission discs to slide;

[0008] The transmission rail is horizontally arranged, and the transmission rail comprises a straight section and a ring section. The detection and screening mechanism is arranged at the straight section of the transmission rail close to the material collecting mechanism, and the detection and screening mechanism horizontally emits imaging light perpendicular to the transmission rail towards the transmission rail;

[0009] A plurality of placement holes for placing rivet nuts one by one are formed in the transmission disc along the straight direction. A locking assembly for locking the rivet nut on the transmission disc after the rivet nut is placed in the placement hole, and a rotating assembly for rotating the rivet nut around the axis of the rivet nut in the circumferential direction after the rivet nut is locked on the transmission disc are installed between the transmission rail and the transmission disc.

[0010] By adopting the above technical scheme, in the process of mass production of rivet nuts, the rivet nuts after electroplating treatment and drying can be collected and accumulated at the collecting mechanism, and then discharged one by one through the collecting mechanism, and then continuously transported to the detection and screening mechanism through the conveying mechanism for optical detection and screening, so as to realize full detection of the size, half-rivet structure and surface burr of the rivet nut product. In this process, the driving assembly can continuously rotate the conveying disc on the conveying rail and continuously batch convey the rivet nuts to the detection and screening mechanism for optical imaging, detection and screening. The placement hole on the conveying disc cooperates with the locking assembly to lock and fix the rivet nut and limit the rivet nut, so that the distance and angle of the rivet nut relative to the light source during imaging remain consistent. The placement hole, the locking assembly and the rotating assembly cooperate to rotate the rivet nut in the circumferential direction, so as to realize full detection of the surface state of the rivet nut in the circumferential direction.

[0011] Therefore, the device as a whole can realize the discharge of rivet nuts one by one, and ensure the continuous conveying process, realize the batch conveying, position adjustment and fixing of the rivet nuts from electroplating treatment to optical detection and screening, effectively integrate the conveying process and optical screening and detection process of the rivet nuts after electroplating treatment and drying into an uninterrupted and continuous process, effectively save the time consumed by the operator / mechanical to arrange the scattered rivet nuts, and effectively shorten the time consumed by the discontinuous / continuous existing rivet nuts from electroplating treatment to optical screening and manual full detection, which is conducive to improving the overall detection and screening efficiency and ultimately improving the overall production efficiency of the rivet nuts.

[0012] Optionally, the collecting mechanism includes a vibrating disc fixedly installed on the device body, a discharging guide connected to the discharging port of the vibrating disc, and a pressing assembly provided at the discharging end of the discharging guide. The discharging guide can only pass one workpiece at a time. When the workpiece passes through the discharging end of the discharging guide, the head flange of the workpiece is vertically upward and the rod portion is vertically downward. The pressing assembly is used to vertically press the workpiece into the placement hole when the workpiece passes through the discharging end of the discharging guide.

[0013] By adopting the above technical scheme, the rivet nuts after electroplating treatment and drying can be placed in the vibrating disc for centralized storage, and then conveyed one by one and stably to above the conveying rail through the discharging guide. When the rivet nut falls to the discharging end of the discharging guide, the rivet nut is kept in a vertical state under the limiting action of the discharging guide, and is vertically inserted into the corresponding placement hole on the conveying disc under the pressing action of the pressing assembly cooperating with the discharging guide, so as to continuously complete the discharging action and naturally realize the vibration sorting and alignment of the rivet nut during the discharging and conveying process of the rivet nut, saving the time consumed by the operator / mechanical to re-arrange the rivet nuts.

[0014] Optionally, the locking assembly comprises a plurality of locking sleeves corresponding to the plurality of placement holes of the conveying disc and arranged in the plurality of placement holes in a lifting manner, and a driving component for driving the locking sleeves to lift, the locking sleeve is open and the opening of the locking sleeve is vertically upward, a flexible pad is fixedly installed on the bottom wall of the locking sleeve, and the inner cavity of the locking sleeve is in interference fit with the shank of the rivet nut.

[0015] By adopting the above technical scheme, in the process of the pressing assembly cooperating with the blanking guide rail and the conveying disc to press down the rivet nut, the driving component can drive the locking sleeve to lift, and the locking sleeve cooperates with the pressing assembly, so that the lower part of the rivet nut can be aligned and stably inserted into the locking sleeve, and then the rivet nut is fixed on the conveying disc.

[0016] Optionally, the driving component comprises a plurality of first tooth rings coaxially sleeved outside the plurality of locking sleeves and a first tooth bar in meshing connection with the first tooth rings, the first tooth ring is rotationally connected to the conveying disc along the axis of the first tooth ring, and the locking sleeve is threadedly assembled and slidingly connected to the inside of the first tooth ring along the axis of the locking sleeve; the first tooth bar is fixedly installed inside the straight line segment of the guide rail, and when the pressing assembly vertically presses the workpiece into the placement hole, the first tooth bar drives the first tooth ring at the corresponding placement hole to synchronously rotate, and the locking sleeve synchronously lifts.

[0017] By adopting the above technical scheme, as the driving assembly drives the conveying disc to slide on the conveying guide rail, when the conveying disc reaches and gradually passes below the blanking end of the blanking guide rail, the first tooth ring on the conveying disc can mesh with the first tooth bar, and the first tooth ring continuously advances with the conveying disc and rotates relative to the first tooth bar under the continuous movement of the conveying disc; in this process, the locking sleeve moves upward with the first tooth ring, so that the upward movement of the locking sleeve is more conveniently realized by utilizing the forward movement trend of the conveying disc itself and the driving force, the process of the conveying disc reaching the pressing assembly and continuously conveying is synchronized with the process of the pressing assembly pressing down the locking sleeve, the reaction time of the pressing assembly pressing down the locking sleeve after the conveying disc reaches the pressing assembly is saved, the time-consuming of rivet nut selection, adjustment and fixing is effectively shortened, and the overall detection and selection efficiency is improved.

[0018] Optionally, the rotating assembly comprises a second tooth ring coaxially arranged below the plurality of first tooth rings and a tooth bar group in meshing connection with the second tooth ring, the tooth bar group is located below the first tooth bar and in the imaging light irradiation range of the detection and selection mechanism, the tooth bar group comprises a plurality of second tooth bars fixedly installed on the guide rail and arranged at intervals along the extension direction of the straight line segment of the guide rail; the conveying disc sequentially passes through the first tooth bar and the tooth bar group, and the first tooth ring is rotationally connected to the conveying disc through the second tooth ring and synchronously rotates with the second tooth ring.

[0019] With the above technical scheme, as the conveying disc continuously moves forward, the conveying disc can drive the rivet nut to gradually reach and pass through the imaging light irradiation interval of the detection and screening mechanism; in this process, the first gear ring has been relatively separated from the first gear and no longer rotates by itself, and the second gear ring continuously advances the conveying disc under the continuous movement of the conveying disc and sequentially contacts and passes through the multiple second gear racks section by section, thereby relatively stably and conveniently adjusting the circumferential position of the rivet nut, obtaining multiple images of the outer peripheral wall of the rivet nut in the imaging light irradiation interval of the detection and screening mechanism, and relatively conveniently and effectively achieving comprehensive detection of the outer peripheral wall condition of the rivet nut (including the product size, half-rivet structure, and surface burr condition of the rivet nut). The detection and screening mechanism can take flash photographs of the rivet nut during the forward rotation of the rivet nut, and the operator does not need to take out the rivet nut, rotate the rivet nut after taking it out, and put the rivet nut back on the detection platform. The rivet nut is in a continuous conveying state during its rotation, and can always remain relatively stationary in the horizontal position and the vertical position relative to the conveying disc during its rotation, thereby further shortening the time-consuming rivet nut screening adjustment alignment and fixation.

[0020] Optionally, the first gear ring is rotationally connected above the second gear ring about the axis thereof, and the first gear ring and the second gear ring have a large friction force therebetween.

[0021] By adopting the above technical scheme, it is beneficial for the first gear ring to remain relatively stationary relative to the second gear ring without receiving external force, and it is beneficial for the first gear ring to effectively rotate with the first gear rack when the second gear ring remains relatively stationary relative to the conveying disc.

[0022] Optionally, the guide rail straight section is further provided with an unlocking assembly for lifting the head flange of the rivet nut after the rivet nut completes optical detection and driving the locking sleeve to descend.

[0023] By adopting the above technical scheme, it is beneficial for the rivet nut to realize relative separation from the locking sleeve after completing optical detection, thereby facilitating the operator to subsequently take out the rivet nut and reject unqualified rivet nuts.

[0024] Optionally, the unlocking assembly includes a left guide frame, a right guide frame, and a third gear rack fixedly installed on the guide rail, the left guide frame and the right guide frame are oppositely arranged on both sides of the guide rail straight section, and the upper portions of the left guide frame and the right guide frame extend toward each other to above the guide rail, and a gap only for the rivet nut stem to pass through is left between the left guide frame and the right guide frame; the third gear rack is fixedly installed below the left guide frame / right guide frame, and the third gear rack is oppositely arranged with the first gear rack.

[0025] By adopting the technical scheme, with the continuous forward movement of the conveying disc, the third rack can directly realize reverse rotation of the first gear in the opposite direction of the first rack, so that the locking sleeve can conveniently utilize the tendency and driving force of the forward movement of the conveying disc to realize lowering relative to the conveying disc; the head flange of the rivet nut can be kept above the left guide frame and the right guide frame during the lowering of the locking sleeve, and the rod part continuously runs forward with the conveying disc, so that the relative separation of the locking sleeve and the rivet nut is conveniently realized, and the operator / mechanical device can subsequently take out the rivet nut from the locking sleeve more easily and quickly.

[0026] Optionally, a roller set is integrally rotatably installed on the lower side of the transmission disc, the roller set includes a plurality of rollers uniformly arranged on the transmission disc, and the transmission disc is slidably connected to the conveying guide rail through the rollers.

[0027] By adopting the technical scheme, the friction between the conveying disc and the conveying guide rail can be reduced, and efficient and stable transmission of the conveying disc can be realized.

[0028] The application also provides a non-slip rivet nut, which comprises a head flange and a rod part integrally connected with the head flange, a plurality of half-rivet structures are arranged at the connection between the head flange and the rod part, the half-rivet structures are uniformly distributed along the outer circumference of the rod part, and a non-slip pattern is arranged on the outer side of the rod part.

[0029] In summary, the application has at least one of the following beneficial technical effects:

[0030] 1. By arranging the vibration disc, the feeding guide rail, the pressing assembly, the conveying guide rail, the conveying disc and the driving assembly, and by cooperating the above components with the locking assembly and the rotating assembly, the rivet nuts can be conveniently collected, fed one by one, fixed and conveyed in batches, and adjusted and aligned during the batch conveying process, and the above process is continuous and uninterrupted, the time consumed due to the discontinuous conveying process and the complicated adjustment and alignment steps during the process from the electroplating treatment and drying to the optical screening and manual inspection is effectively shortened, and the overall detection and screening efficiency is effectively improved.

[0031] 2. By arranging the first rack, the first tooth ring and the third rack, and by cooperating the above components with the conveying disc, the second tooth ring, the left guide frame and the right guide frame, the rivet nuts can be conveniently and efficiently locked and fixed relative to the locking sleeve and unlocked during the forward movement of the conveying disc on the conveying guide rail driven by the driving assembly, so that the feeding and discharging efficiency of the rivet nuts is improved.

[0032] 3. Through the cooperation between the gear set and the second tooth ring, the conveying disc, the first tooth ring and the locking sleeve, the rivet nut can be directly, conveniently and efficiently rotated horizontally during the process of passing through the imaging light irradiation area of the detection screening mechanism, so as to efficiently realize the comprehensive detection of the state of the outer peripheral wall of the rivet nut. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application;

[0034] Figure 2 is a schematic diagram of the overall structure of the embodiment of the present application from a different perspective; Figure 1

[0035] Figure 3 is an enlarged schematic diagram of part A in Figure 1

[0036] Figure 4 is a schematic diagram of the overall structure of the embodiment of the present application from a different perspective;

[0037] Figure 5 is a schematic diagram of the overall structure of the embodiment of the present application from a different perspective;

[0038] Figure 6 is an enlarged schematic diagram of part B in Figure 1

[0039] Figure 7 is a schematic diagram of the overall structure of the embodiment of the present application from a different perspective;

[0040] Reference signs: 1, device body; 2, collecting mechanism; 21, vibrating disc; 22, discharging guide rail; 23, pressing assembly; 3, conveying mechanism; 31, conveying guide rail; 311, limiting block; 312, conveying belt; 32, conveying disc; 321, fixing frame; 322, roller set; 323, placement hole; 33, driving assembly; 331, main driving disc; 332, auxiliary driving disc; 333, driving belt; 4, detection screening mechanism; 5, locking assembly; 51, locking sleeve; 511, flexible pad; 512, limiting block; 52, driving part; 521, first tooth ring; 522, first rack; 6, rotating assembly; 61, second tooth ring; 611, limiting groove; 62, rack set; 621, second rack; 7, unlocking assembly; 71, left guide frame; 72, right guide frame; 73, third rack; 8, rivet nut; 81, head flange; 82, rod part; 83, half-rivet structure; 84, anti-skid pattern. DETAILED DESCRIPTION

[0041] The following will be further described in detail in combination with the accompanying drawings. Figures 1-7 The present application is further described in detail.

[0042] ​​​The embodiment of the application discloses a kind of anti-skid rivet nut detection screening equipment, as shown in Figure 1 And Figure 2 As shown, including equipment body 1, rivet nut 8 on equipment body 1 realizes electroplating treatment and air drying etc.Process, to solve the problem of "rivet nut 8 in traditional technology is handled by electroplating to optical screening, manual full detection transfer efficiency is low, and optical screening adjustment is right and fixed time-consuming is long, overall detection screening efficiency is not high", the equipment body 1 of the application is also installed with the material collecting mechanism 2 for collecting and discharging rivet nut 8 one by one, the transmission mechanism 3 for continuously conveying rivet nut 8 and the detection screening mechanism 4 for optical screening of rivet nut 8.

[0043] Specifically, referring to Figure 1 And Figure 2 Material collecting mechanism 2 includes vibration disc 21 fixedly installed on equipment body 1, discharging guide rail 22 connected to the discharge port of vibration disc 21 on feeding end and lower pressing assembly 23 arranged at the discharge end of discharging guide rail 22.

[0044] Vibration disc 21 is provided with a hopper, the hopper opening faces upwards and is used for storing rivet nut 8 after electroplating treatment and air drying, the upper side of the hopper is a feeding track of the vibration disc 21, the feeding track extends to the outside of the hopper, and the end of the feeding track extending out of the hopper is a discharge end of the vibration disc 21, the feeding track is fixedly connected to the upper end of the discharging guide rail 22 and is connected thereto; the discharging guide rail 22 is serpentine from top to bottom, and the width and size of the track of the discharging guide rail 22 gradually narrow, until only one rivet nut 8 (also referred to as "workpiece" in the embodiment of the application) can pass through at a time, and when the rivet nut 8 passes through the discharge end of the discharging guide rail 22, the head flange 81 of the workpiece is vertically upwards and the rod part 82 is vertically downwards.

[0045] Referring to Figure 1 And Figure 3 The lower pressing assembly 23 can be a pressing disc and a linear driving part fixedly installed at the discharge end of the discharging guide rail 22 and used for driving the pressing disc to move downwards in the embodiment of the application, or can be a mechanical hand that can approach the discharge end of the discharging guide rail 22 from outside and vertically press the rivet nut 8 downwards; the discharging assembly is used for vertically pressing the workpiece one by one when each workpiece passes through the discharge end of the discharging guide rail 22, and makes the workpiece separate from the discharging guide rail 22.

[0046] The transmission mechanism 3 includes a ring-shaped transmission guide rail 31, a plurality of transmission discs 32 slidingly assembled on the transmission guide rail 31 and a driving assembly 33 used for driving the transmission disc 32 to slide.

[0047] Referring to Figure 1 And Figure 3The conveying rail 31 is specifically in a waist shape, is fixedly installed on the equipment body 1, and is horizontally arranged. The conveying rail 31 comprises two groups of symmetrical linear segments and annular segments. The discharge end of the blanking rail 22 and the pressing assembly 23 are located above the joint of one group of linear segments and annular segments of the conveying rail 31. The conveying disc 32 can be horizontally reciprocated around the conveying rail 31 under the driving action of the driving assembly 33. After the workpiece falls from the discharge end of the blanking rail 22, the workpiece is located above the linear segment of the conveying rail 31, and the workpiece can be linearly conveyed along the linear segment of the conveying rail 31 through the conveying disc 32 until reaching the entrance of the next annular segment.

[0048] Specifically, the conveying disc 32 is in a rectangular disc body, and the length direction of the conveying disc 32 is adapted to be consistent with the conveying direction of the linear segment of the conveying rail 31. A plurality of rollers are integrally rotatably installed below the conveying disc 32. The rollers comprise at least four rollers which are uniformly arranged at four corners of the conveying disc, are rotatably connected to the inner and outer sides of the conveying rail 31, and slideably connect the conveying disc to the conveying rail 31 through the plurality of rollers. A fixed frame 321 is fixedly installed above the conveying disc 32. A plurality of placement holes 323 for sequentially placing the rivet nuts 8 are uniformly arranged on the fixed frame 321 along the long side direction of the conveying disc 32. The placement holes 323 are upwardly and vertically arranged.

[0049] Referring to Figure 1 and Figure 3 , the driving assembly 33 comprises a main driving disc 331, a sub-driving disc 332 and a driving belt 333 which are located on the same horizontal plane and on the inner side of the conveying rail 31.

[0050] The main driving disc 331 and the sub-driving disc 332 can be rollers with strong friction on the outer wall. The main driving disc 331 and the sub-driving disc 332 are horizontally arranged, and are rotatably connected to the equipment body 1 around their respective axes. The main driving disc 331 is driven by a motor. The driving belt 333 is a transmission belt which is sleeved and assembled on the outer side of the main driving disc 331 and the sub-driving disc 332. The driving belt 333 is also in a waist shape, and the distance between the driving belt 333 and the conveying rail 31 is always kept unchanged. The side of the transmission disc close to the inner side of the conveying rail 31 is hingedly connected to the transmission surface of the driving belt 333. In other application embodiments, the main driving disc 331 and the sub-driving disc 332 can be rollers with tooth portions on the outer wall. The driving belt 333 is a chain which is sleeved and assembled on the outer side of the main driving disc 331 and the sub-driving disc 332. The inner side of the conveying disc 32 is hingedly connected to the outer side of the chain through a pin shaft.

[0051] And in the embodiment of the present application, the plurality of conveying plates 32 are uniformly arranged outside the driving belt 333, and the main driving plate 331 is driven to rotate by the motor, so that the plurality of conveying plates 32 can be correspondingly driven to continuously rotate back and forth along the conveying rail 31; and the detection and screening mechanism 4 is arranged at the linear section of the conveying rail 31 near the discharge end of the discharging rail 22, and the detection and screening mechanism 4 horizontally emits an imaging light perpendicular to the conveying rail 31 towards the conveying rail 31, and the locking assembly 5 for locking the rivet nut 8 on the conveying plate 32 after the rivet nut 8 is placed in the placement hole 323, the rotating assembly 6 for rotating the rivet nut 8 around the axis of the rivet nut 8 after the rivet nut 8 is locked on the conveying plate 32, and the unlocking assembly 7 for lifting the head flange 81 of the rivet nut 8 and driving the locking sleeve 51 to descend after the optical detection of the rivet nut 8 are further arranged between the conveying rail 31 and the conveying plate 32.

[0052] With reference to Figure 3 And Figure 4 , the rivet nut 8 after the electroplating treatment and drying can be placed in the vibrating disc 21 for centralized storage, and is transferred to above the conveying rail 31 one by one and stably through the discharging rail 22; and when the rivet nut 8 falls to the discharge end of the discharging rail 22, the rivet nut 8 is kept in a vertical state under the limiting action of the discharging rail 22, and is vertically inserted into the corresponding placement hole 323 of the conveying plate 32 under the pressing action of the discharging rail 22 cooperating with the pressing assembly 23, so that the discharging action is continuously completed, and the vibration distribution and alignment of the rivet nut 8 are naturally realized during the conveying of the rivet nut 8, saving the time consumed by the operator / mechanical reorganization of the rivet nut 8.

[0053] The driving assembly 33 cooperates with the discharging rail 22, the vibrating disc 21 and the pressing assembly 23, and can drive the conveying plate 32 to continuously rotate on the conveying rail 31 and continuously batch convey the rivet nut 8 to the detection and screening mechanism 4 for optical imaging and detection and screening.

[0054] Specifically, with reference to Figure 3 And Figure 4 , the locking assembly 5 includes a plurality of locking sleeves 51 which are correspondingly arranged in the plurality of placement holes 323 of the conveying plate 32 and a driving component 52 for driving the locking sleeves 51 to ascend and descend.

[0055] With reference to Figure 5The driving component 52 comprises a plurality of first tooth rings 521 coaxially sleeved outside the plurality of locking sleeves 51 one by one and a first rack 522 movably engaged with the first tooth rings 521. The locking sleeve 51 is arranged in an open manner and the opening of the locking sleeve 51 vertically faces upward. The flexible pad 511 is fixedly installed on the bottom wall of the locking sleeve 51. The inner cavity of the locking sleeve 51 is in interference fit with the rod part 82 of the rivet nut 8. The first tooth ring 521 is rotationally connected to the transmission disc 32 along the axis thereof. The first tooth ring 521 has sawteeth facing outward. The locking sleeve 51 is threadedly assembled and axially slidably connected to the inner side of the first tooth ring 521.

[0056] Specifically, referring to Figure 4 and Figure 5 , the rotating assembly 6 comprises a second tooth ring 61 coaxially arranged below the plurality of first tooth rings 521 one by one and a rack set 62 movably engaged with the second tooth ring 61. The second tooth ring 61 is rotationally connected to the fixed frame 321. The second tooth ring 61 also has sawteeth facing outward. The first tooth ring 521 is rotationally connected to the upper side of the second tooth ring 61 along the axis thereof. In addition, the first tooth ring 521 and the second tooth ring 61 are both located in the placement hole 323. The first tooth ring 521 and the second tooth ring 61 have a large friction force therebetween. The inner side of the second tooth ring 61 is provided with a linear limiting groove 611 along the axis thereof. The limiting block 512 slidably connected with the limiting groove 611 is protrusively arranged on the outer peripheral wall of the bottom end of the locking sleeve 51.

[0057] The first rack 522 is fixedly installed on the inner side of the linear segment of the guide rail. The first rack 522 is provided with a limiting block 311 and a conveyor belt 312 on the lower side thereof for being inserted into the sawteeth of the second tooth ring 61 when the first tooth ring 521 contacts the first rack 522 and for keeping the second tooth ring 61 relatively stationary relative to the transmission disc 32.

[0058] Referring to Figure 1 , Figure 5 and Figure 6, two groups of limiting blocks 311 are fixed on two opposite conveying surfaces of the conveying belt 312, and the two groups of limiting blocks 311 are centrally symmetric relative to the midpoint of the conveying belt 312; when the transmission disc 32 drives the fixing frame 321 to gradually approach below the discharging end of the discharging guide rail 22, the first tooth ring 521 on the transmission disc 32 contacts the first toothed bar 522, and one group of limiting blocks 311 on the conveying belt 312 is just embedded between any two adjacent sawteeth of the second tooth ring 61, and the second tooth ring 61 is kept relatively stationary relative to the transmission disc 32; and with the continuous transmission of the transmission disc 32, the conveying belt 312 also drives the limiting blocks 311 to continuously move forward, the first tooth ring 521 on the transmission disc 32 can be engaged with the first toothed bar 522, the first tooth ring 521 continuously advances with the transmission disc 32 and rotates relative to the first toothed bar 522 under the continuous movement of the transmission disc 32, until the first tooth ring 521 is disengaged from the end of the first toothed bar 522, the next first tooth ring 521 in the placement hole 323 behind the first tooth ring 521 synchronously contacts the front end of the first toothed bar 522, and the above steps are repeated.

[0059] In this process, with the driving assembly 33 driving the transmission disc 32 to slide on the transmission guide rail 31, when the transmission disc 32 reaches and gradually passes below the discharging end of the discharging guide rail 22, the first tooth ring 521 on the transmission disc 32 can be engaged with the first toothed bar 522, the first tooth ring 521 continuously advances with the transmission disc 32 and rotates relative to the first toothed bar 522 under the continuous movement of the transmission disc 32, the locking sleeve 51 moves upward with the first tooth ring 521, and the pressing assembly 23 vertically presses the workpiece into the placement hole 323; thus, the screening and removing device utilizes the tendency of the transmission disc 32 to move forward and the driving force to conveniently realize the upward movement of the locking sleeve 51, so that the process of the transmission disc 32 reaching the pressing assembly 23 and continuously transmitting is synchronized with the process of the pressing assembly 23 pressing the locking sleeve 51 downward, the lower part of the rivet nut 8 is aligned and stably inserted into the locking sleeve 51, so as to be fed and fixed on the transmission disc 32, thereby saving the reaction time of the pressing assembly 23 pressing the locking sleeve 51 downward after the transmission disc 32 reaches the pressing assembly 23; and the depth of the rod part of the rivet nut 8 inserted into the locking sleeve 51 is 1 / 6-1 / 5 of the length of the rod part 82, so as to detect the rivet nut 8 by the detection screening mechanism 4 (the figure only shows the principle of the technical scheme, and does not show the actual length of each part).

[0060] Further, referring to Figure 4 and Figure 5The rack set 62 in the rotating assembly is located below the first rack 522 and in the imaging light irradiation interval of the detection screening mechanism 4, and the rack set 62 includes a plurality of second racks 621 which are spaced apart along the extension direction of the linear segment of the guide rail and are fixedly installed on the guide rail; the conveying disc 32 sequentially passes through the first rack 522 and the rack set 62, and the first ring 521 is rotatably connected to the conveying disc 32 through the second ring 61 and rotates synchronously with the second ring 61.

[0061] With the continuous forward movement of the conveying disc 32, the rivet nut 8 can be gradually brought by the conveying disc 32 to the imaging light irradiation interval of the detection screening mechanism 4; in this process, the first ring 521 has been relatively separated from the first rack 522 and no longer rotates by itself, and the second ring 61 continuously advances the conveying disc 32 under the continuous movement of the conveying disc 32 and sequentially contacts and gradually passes through the plurality of second racks 621, thereby relatively stably and conveniently adjusting the circumferential position of the rivet nut 8, obtaining multiple images of the outer peripheral wall of the rivet nut 8 in the imaging light irradiation interval of the detection screening mechanism 4, and relatively conveniently and effectively achieving comprehensive detection of the outer peripheral wall condition of the rivet nut 8 (including product size, half-rivet structure 83, and surface burr condition of the rivet nut 8); and the detection screening mechanism 4 can flash photograph the rivet nut 8 during the forward rotation of the rivet nut 8, so that the operator does not need to take out the rivet nut 8, rotate the rivet nut 8 after taking it out, and put it back on the detection platform, the rivet nut 8 is in a continuous conveying state during its rotation, and the rivet nut 8 can always remain relatively stationary in the horizontal position and the vertical position relative to the conveying disc 32 during its rotation, thereby effectively achieving rivet nut 8 screening adjustment alignment and further shortening the time-consuming of fixing.

[0062] Referring to Figure 4 and Figure 6 The unlocking assembly 7 includes a left guide frame 71, a right guide frame 72, and a third rack 73 which are fixedly installed on the guide rail, the left guide frame 71 and the right guide frame 72 are oppositely arranged on both sides of the linear segment of the guide rail and the upper parts of the left guide frame 71 and the right guide frame 72 extend towards each other above the guide rail, and a gap is left between the left guide frame 71 and the right guide frame 72 for the rod part 82 of the rivet nut 8 to pass through; in the embodiment of the present application, the third rack 73 is fixedly installed below the right guide frame 72, and the third rack 73 is oppositely arranged with the first rack 522.

[0063] With the continuous forward movement of the conveying disc 32, the third rack 73 can more directly realize the reverse rotation of the first gear in the opposite direction of the first rack 522, so that the locking sleeve 51 can more conveniently utilize the tendency and driving force of the forward movement of the conveying disc 32 to realize the lowering relative to the conveying disc 32; and the lock nut 8 can keep the head flange 81 above the left guide frame 71 and the right guide frame 72 and the rod portion 82 continuously runs forward with the conveying disc 32 during the lowering of the locking sleeve 51, so as to more conveniently realize the relative separation of the locking sleeve 51 and the lock nut 8, and facilitate the subsequent labor-saving and rapid removal of the lock nut 8 from the locking sleeve 51 by the operator / machine.

[0064] The implementation principle of the anti-slip lock nut detection and screening device according to the embodiment of the application is as follows: by setting the vibration disc 21, the feeding guide rail 22, the pressing assembly 23, the conveying guide rail 31, the conveying disc 32 and the driving assembly 33, and by cooperating the above components with the locking assembly 5 and the rotating assembly 6, the material collection of the lock nut 8, the one-by-one feeding of the collected lock nut 8, the relative fixation of the one-by-one fed lock nut 8 and the batch conveying of the lock nut 8 can be more conveniently realized, and the lock nut 8 can be directly adjusted and aligned during the batch conveying of the lock nut 8, and the above process is in a continuous and uninterrupted state, which effectively shortens the time consumed due to the discontinuous conveying process and the relatively complicated adjustment and alignment steps in the process from the electroplating treatment and drying to the optical screening and manual full inspection of the lock nut 8, and effectively improves the overall detection and screening efficiency.

[0065] Referring Figure 7 The embodiment also discloses an anti-slip lock nut, which mainly comprises a head flange 81 and a rod portion 82 integrally connected with the head flange 81, a plurality of half-rivet structures 83 are arranged at the connection between the head flange 81 and the rod portion 82, the half-rivet structures 83 are uniformly distributed along the outer circumference of the rod portion 82, and an anti-slip pattern 84 is arranged on the outer side of the rod portion 82; the specifications, the outer circumferential wall recesses and the surface burrs of the rod portion 82 and the head flange 81 of the anti-slip lock nut are detected by the screening and removing device, and the overall detection and screening efficiency and the yield of the anti-slip lock nut detected by the screening and removing device are effectively improved.

[0066] The above are the preferred embodiments of the application, which do not limit the protection scope of the application, and therefore: any equivalent changes made on the basis of the structure, shape and principle of the application shall be covered within the protection scope of the application.

Claims

1. An anti-slip rivet nut detection screening apparatus comprising an apparatus body (1), characterised in that: The device body (1) is provided with a collecting mechanism (2) for collecting and discharging rivet nuts (8) one by one, a conveying mechanism (3) for continuously conveying the rivet nuts (8), and a detection and screening mechanism (4) for optically screening the rivet nuts (8); the conveying mechanism (3) comprises an annular conveying guide rail (31), a plurality of conveying plates (32) slidingly assembled on the conveying guide rail (31), and a driving assembly (33) for driving the conveying plates (32) to slide; The conveying guide rail (31) is horizontally arranged, and comprises a linear section and an annular section; the detection and screening mechanism (4) is arranged at the linear section of the conveying guide rail (31) close to the collecting mechanism (2), and the detection and screening mechanism (4) horizontally emits imaging light perpendicular to the conveying guide rail (31) towards the conveying guide rail (31); A plurality of placement holes (323) for placing the rivet nuts (8) one by one are formed in the conveying plate (32) in a linear direction; a locking assembly (5) for locking the rivet nuts (8) on the conveying plate (32) after the rivet nuts (8) are placed in the placement holes (323), and a rotating assembly (6) for rotating the rivet nuts (8) around the axis of the rivet nuts (8) after the rivet nuts (8) are locked on the conveying plate (32) are arranged between the conveying guide rail (31) and the conveying plate (32); The locking assembly (5) comprises a plurality of locking sleeves (51) arranged in the plurality of placement holes (323) of the conveying plate (32) one by one and a driving component (52) for driving the locking sleeves (51) to ascend and descend; the locking sleeve (51) is open at the top and the bottom, and the flexible pad (511) is fixedly arranged on the bottom wall of the locking sleeve (51); the inner cavity of the locking sleeve (51) is in interference fit with the rod portion (82) of the rivet nut (8); The driving component (52) comprises a plurality of first tooth rings (521) coaxially sleeved outside the plurality of locking sleeves (51) one by one and a first toothed rack (522) in meshing connection with the first tooth rings (521); the first tooth ring (521) is rotationally connected to the conveying plate (32) along the axis thereof, and the locking sleeve (51) is threadedly assembled and axially slidingly connected to the inside of the first tooth ring (521); the first toothed rack (522) is fixedly arranged on the inside of the linear section of the guide rail; when the pressing assembly (23) vertically presses the workpiece into the placement hole (323), the first toothed rack (522) drives the first tooth ring (521) at the corresponding placement hole (323) to synchronously rotate, and the locking sleeve (51) synchronously ascends. The rotating assembly (6) comprises a second gear ring (61) coaxially arranged below a plurality of first gear rings (521) one by one and a rack group (62) movably engaged with the second gear ring (61), the rack group (62) is located below the first gear rack (522) and in the imaging light irradiation range of the detection screening mechanism (4), the rack group (62) comprises a plurality of second gear racks (621) fixedly installed on the guide rail in the extension direction of the straight line segment of the guide rail; the conveying disc (32) passes through the first gear rack (522) and the rack group (62) in turn, and the first gear ring (521) is rotatably connected to the conveying disc (32) through the second gear ring (61) and rotates synchronously with the second gear ring (61).

2. The anti-slip rivet nut detection and screening apparatus of claim 1, wherein: The collecting mechanism (2) comprises a vibrating disc (21) fixedly installed on the equipment body (1), a discharging guide rail (22) connected to the discharging end of the vibrating disc (21), and a pressing assembly (23) arranged at the discharging end of the discharging guide rail (22), the discharging guide rail (22) can only pass one workpiece at a time, and the head flange (81) of the workpiece is vertically upward and the rod part (82) is vertically downward when the workpiece passes through the discharging end of the discharging guide rail (22); the pressing assembly (23) is used for vertically pressing the workpiece into the placing hole (323) when the workpiece passes through the discharging end of the discharging guide rail (22).

3. The anti-slip rivet nut detection and screening apparatus of claim 1, wherein: The first gear ring (521) is rotatably connected above the second gear ring (61) about its axis.

4. The anti-slip rivet nut detection and screening apparatus of claim 1, wherein: The guide rail straight line segment is also provided with an unlocking assembly (7) for lifting the head flange (81) of the rivet nut (8) after the optical detection of the rivet nut (8) is completed and driving the locking sleeve (51) to descend.

5. An anti-slip rivet nut detection and screening apparatus according to claim 4, wherein: The unlocking assembly (7) comprises a left guide frame (71), a right guide frame (72) and a third gear rack (73) fixedly installed on the guide rail, the left guide frame (71) and the right guide frame (72) are oppositely arranged on both sides of the guide rail straight line segment, and the upper parts of the left guide frame (71) and the right guide frame (72) extend to above the guide rail, a gap only for the rod part (82) of the rivet nut (8) to pass through is left between the left guide frame (71) and the right guide frame (72); the third gear rack (73) is fixedly installed below the left guide frame (71) / right guide frame (72), and the third gear rack (73) is oppositely arranged with the first gear rack (522).

6. An anti-slip rivet nut detection and screening apparatus according to any one of claims 1 to 5, wherein: The conveying disc (32) is integrally rotatably installed with a roller group (322) on the lower side, the roller group (322) comprises a plurality of rollers uniformly arranged on the conveying disc (32), and the conveying disc (32) is slidably connected to the conveying guide rail (31) through the rollers.

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