Automatic assembling and detecting equipment for combined screws

Abstract

The utility model discloses automatic assembling and detecting equipment for combined screws. The driving module is used for driving the index plate to rotate; the carriers are arranged in the circumferential direction of the index plate at equal angles; the nut feeding devices surround the periphery of the index plate and are sequentially arranged in the conveying direction; the first carrying mechanism is used for carrying nuts on the nut feeding devices to the carriers; the carrying and pre-screwing device is used for carrying a bolt on the bolt feeding device to a nut on a carrier and pre-screwing the bolt and the nut, the screwing device is used for screwing the nut and the bolt to obtain a combined screw, and the detection camera is used for detecting the appearance of the combined screw. The combined screw assembling device is simple in structure, the assembling quality of combined screws can be guaranteed, the assembling yield is improved, and therefore the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to screw production technical field, especially, relate to a kind of automatic assembly detection equipment of combination screw.

BACKGROUND

[0002] A kind of combination screw is obtained by nut and bolt tightening, after tightening, detect to confirm whether the quality of combination screw is qualified, manual operation is low in production efficiency, and artificial intensity is big, therefore, it needs to design relevant automatic assembly detection equipment to complete.

[0003] In prior art, for example, a kind of automatic assembly device of lock nut is disclosed in Chinese patent authorized announcement No.CN215658891U, three screws are assembled on the three insertion holes of lock nut, the scheme adopts mechanical hand to feed, and production cost is high;In a kind of electronic chip screwing device and method disclosed in Chinese patent publication No.CN114178837A, screwing device is provided, in the scheme, nut is fed by the way of vibration disc, guide pipe is connected with the end of screw vibrator on the side of sharp mouth seat, the lower end of sharp mouth seat is provided with gripper that clamps screw, and screwing machine is located directly above sharp mouth seat, after nut and screw are transported to position, screwing machine works directly to screw into nut, if the length of screw or bolt is longer, the position of screw and nut will be deviated, the screwing force of screwing machine is larger, and direct screwing of screwing machine can cause deformation of screw or nut, to affect the quality of assembly, and reduce assembly yield;And the scheme does not provide detection device to detect whether assembled nut screw is qualified.

[0004] Therefore, it is necessary to provide a kind of automatic assembly detection equipment of combination screw to solve the above technical problems.

UTILITARY MODEL CONTENT

[0005] The utility model is mainly aimed at providing a kind of automatic assembly detection equipment of combination screw, simple structure can guarantee the quality of combination screw assembly, improve assembly yield, to improve production efficiency.

[0006] The utility model achieves the above-mentioned purpose by the following technical scheme: a kind of automatic assembly detection equipment of combination screw, it includes index plate, drive module that the index plate rotates is driven, a plurality of carriers are set along the equiangular angle of the index plate and the nut feeder device is sequentially set along the outer periphery of the index plate and the conveying direction, the first handling mechanism that nut on the nut feeder device is handled to the carrier, screw feeder device, handling and pre-tightening device that the screw on the screw feeder device is handled to the nut of carrier and screw and nut are pre-tightened, the screwing device that the nut and bolt are tightened to obtain combination screw, detection camera that the appearance of combination screw is detected, good product collection device and defective product collection device.

[0007] Further, the nut feeding device and the bolt feeding device both comprise a vibration disc outputting the same state material, a plurality of conveying channels arranged at the output end of the vibration disc, a material receiving baffle arranged at the output end of the conveying channel, and a straight vibration module arranged below the conveying channel and conveying the material in the conveying channel to the material receiving baffle, wherein the material receiving baffle is provided with a first sensor sensing the material.

[0008] Further, the carrying pre-rotation device comprises a first air cylinder, a first supporting plate driven by the first air cylinder to move radially along the index disc, a second air cylinder arranged on the first supporting plate, a second supporting plate driven by the second air cylinder to move up and down, and a plurality of clamping pre-rotation mechanisms arranged on the second supporting plate.

[0009] Further, the clamping pre-rotation mechanism comprises a rotary lifting driving assembly, a rotary block driven by the rotary lifting driving assembly to rotate around a vertical shaft, a third air cylinder arranged at the lower end of the rotary block, and a pair of first clamping jaws driven by the third air cylinder to clamp or open.

[0010] Further, the rotary lifting driving assembly comprises a first motor, a first transmission shaft driven by the first motor to rotate around a vertical shaft, a second transmission shaft arranged in parallel with the first transmission shaft and rotatably arranged on the second supporting plate, a lifting shaft movably arranged inside the second transmission shaft, and an elastic member sleeved on the outer periphery of the lower end of the lifting shaft, wherein the first transmission shaft and the second transmission shaft are rotationally connected through a transmission belt; the rotary block is arranged at the lower end of the lifting shaft, the upper end of the elastic member abuts against the bottom of the second transmission shaft, and the lower end abuts against the upper end of the rotary block.

[0011] Further, the screwing device comprises a plurality of screwing mechanisms screwing the nut and the bolt to obtain a combined screw, wherein the screwing mechanism comprises a fourth air cylinder, a lifting frame driven by the fourth air cylinder to move up and down, a second motor arranged on the lifting frame, a first rotary shaft driven by the second motor to rotate around a vertical shaft, a second rotary shaft movably arranged inside the lower end of the first rotary shaft, a screwing head arranged at the bottom of the second rotary shaft, and an elastic module sleeved on the outer periphery of the second rotary shaft.

[0012] Furthermore, an avoidance gap is provided inside the lower end of the first rotating shaft for the second rotating shaft to move up and down, the second rotating shaft is movably arranged inside the first rotating shaft through a horizontal support shaft, and a waist-shaped opening is provided on the outer periphery of the first rotating shaft where the avoidance gap is located for the support shaft to move up and down; the elastic module includes a flange ring movably mounted on the second rotating shaft and an elastic member mounted on the second rotating shaft, the lower end of the elastic member is connected to the upper end of the flange ring, and the upper end is abutted against the bottom of the first rotating shaft, and the second rotating shaft is provided with a limiting cylinder below the flange ring to limit the flange ring to the lower position, and a second sensor for sensing the position of the flange ring is provided on the side of the flange ring.

[0013] Furthermore, the good product receiving device includes a receiving module and a second conveying mechanism for conveying the good products inspected on the carrier to the receiving module; the defective product receiving device includes a waste receiving box and a third conveying mechanism for conveying the defective products on the carrier to the waste receiving box.

[0014] Furthermore, the first conveying mechanism, the second conveying mechanism and the third conveying mechanism have the same structure and all include a fifth cylinder, a third support plate driven by the fifth cylinder to move radially along the dividing plate, a sixth cylinder arranged on the third support plate, a fourth support plate driven by the sixth cylinder to move up and down, and a plurality of clamping components fixed on the fourth support plate; the clamping component includes a clamping cylinder and a pair of second clamping jaws driven by the clamping cylinder to clamp or open.

[0015] Furthermore, the carrier is provided with a plurality of accommodating holes that are shaped like nuts, and the dividing plate is provided with avoidance through holes at positions corresponding to the accommodating holes. A jacking assembly for lifting the combination screw upward is provided below the accommodating holes at the good product receiving device and the defective product receiving device. The jacking assembly includes a jacking cylinder and a jacking rod driven by the jacking cylinder and extended into the avoidance through hole to lift the combination screw upward.

[0016] Compared with the prior art, the automatic assembly and detection equipment for the combined screw has the beneficial effects that: the carrying and pre-rotating device is simple in structure, the clamping and pre-rotating mechanism arranged on the carrying and pre-rotating device can carry the bolt, and the rotating and lifting driving assembly can drive the first clamping jaw to rotate and lift, so that the bolt and the nut are pre-tightened, the same device can realize the actions of carrying and pre-tightening, the pre-tightening makes the bolt rotate into the nut by a part, the bolt and the nut have been pre-tightened during the process that the pre-tightened screw is conveyed to the tightening device by the indexing disc, the problem of positioning deviation between the bolt and the nut can be avoided, and the assembly quality is ensured; the tightening device is arranged to further tighten the bolt and the nut, the bolt and the nut are tightened by the twice-tightening mode, the positioning deviation of the bolt and the nut can be avoided, the assembly quality can be ensured, the assembly yield is improved, and multiple combined screws can be assembled at a time, and the production efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a three-dimensional structure schematic view of the automatic assembly and detection equipment for the combined screw of the utility model embodiment;

[0018] Figure 2 It is a three-dimensional structure schematic view of the automatic assembly and detection equipment for the combined screw of the utility model embodiment;

[0019] Figure 3 It is a three-dimensional structure schematic view of the carrier of the utility model embodiment;

[0020] Figure 4 It is a three-dimensional structure schematic view of the first carrying mechanism of the utility model embodiment;

[0021] Figure 5 It is a three-dimensional structure schematic view of the carrying and pre-rotating device of the utility model embodiment;

[0022] Figure 6 It is a three-dimensional structure schematic view of the clamping and pre-rotating mechanism of the utility model embodiment;

[0023] Figure 7 It is a three-dimensional structure schematic view of the tightening device of the utility model embodiment;

[0024] Figure 8 It is a three-dimensional structure schematic view of the tightening device of the utility model embodiment;

[0025] The numbers in the figure represent:

[0026] 100-automatic assembly and detection equipment for the combined screw;

[0027] 200-combined screw, 201-nut, 202-bolt;

[0028] 1-dial; 2-carrier, 21-receiving hole;

[0029] 3-nut feeding device, 31-vibrating disc, 32-conveying channel, 33-receiving baffle, 34-straight vibration module, 35-first sensor;

[0030] 4-first carrying mechanism, 41-fifth cylinder, 42-third supporting plate, 43-sixth cylinder, 44-fourth supporting plate, 45-clamping assembly, 451-clamping cylinder, 452-second clamping jaw;

[0031] 5-bolt feeding device;

[0032] 6-carrying pre-rotation device, 61-first cylinder, 62-first supporting plate, 63-second cylinder, 64-second supporting plate, 65-clamping pre-rotation mechanism, 651-rotation lifting driving assembly, 6511-first motor, 6512-first transmission shaft, 6513-second transmission shaft, 6514-transmission wheel, 6515-transmission belt, 6516-elastic member, 6517-bearing, 6518-lifting shaft, 652-rotation block, 653-third cylinder, 654-first clamping jaw;

[0033] 7-tightening device, 71-mounting frame, 72-tightening mechanism, 721-fourth cylinder, 722-lifting frame, 7221-supporting block, 7222-receiving groove, 723-second motor, 724-first rotation shaft, 7241-avoidance gap, 7242-waist-shaped opening, 725-tightening head, 726-second sensor, 727-second rotation shaft, 7271-supporting shaft, 728-bearing, 729-flange ring, 7210-limiting cylinder;

[0034] 8-detection camera;

[0035] 9-good product collecting device, 91-collecting module, 92-second carrying mechanism;

[0036] 10-defective product collecting device, 101-waste box, 102-third carrying mechanism;

[0037] 30-jacking assembly, 301-jacking cylinder, 302-jacking rod.

DETAILED DESCRIPTION

[0038] Please refer to Figures 1-8The embodiment is an automatic assembling and detecting device for combination screws, which comprises a dividing disc 1, a driving module for driving the rotation of the dividing disc 1, a plurality of carriers 2 arranged at equal angles along the circumference of the dividing disc 1, a nut feeding device 3 arranged around the outer periphery of the dividing disc 1 and sequentially along the conveying direction, a first carrying mechanism 4 for carrying the nuts 201 on the nut feeding device 3 to the carriers 2, a bolt feeding device 5, a carrying and pre-tightening device 6 for carrying the bolts 202 on the bolt feeding device 5 to the nuts 201 of the carriers 2 and pre-tightening the bolts 202 and the nuts 201, a tightening device 7 for tightening the nuts 201 and the bolts 202 to obtain combination screws 200, a detecting camera 8 for appearance detection of the combination screws, a good product collecting device 9 and a defective product collecting device 10.

[0039] The carrier 2 is provided with a plurality of accommodation holes 21 in the shape of the nuts 201, when the nuts 201 are in the accommodation holes 21, the upper end of the nuts 201 is placed on the surface of the carrier 2, the lower end of the nuts 201 is a hexagonal structure, and the lower end of the corresponding accommodation hole 21 is also provided with a hexagonal structure. The dividing disc 1 is provided with a avoiding through hole at the position corresponding to the accommodation hole 21. In the embodiment, two accommodation holes 21 are arranged on the carrier 2, therefore, the corresponding carrying mechanism can carry two materials at a time, and the tightening device 7 can assemble two combination screws 200 at a time, which can improve the production efficiency.

[0040] The nut feeding device 3 and the bolt feeding device 5 both comprise a vibration disc 31 for outputting the same state materials, a plurality of conveying channels 32 arranged at the output end of the vibration disc 31, a material receiving baffle 33 arranged at the output end of the conveying channel 32, and a straight vibration module 34 arranged below the conveying channel 32 and conveying the materials in the conveying channel 32 to the material receiving baffle 33, the material receiving baffle 33 is provided with a first sensor 35 for sensing the materials, and the material receiving baffle 33 blocks the materials to continue to be conveyed forward. In the embodiment, two accommodation holes 21 are arranged on the carrier 2, two combination screws are processed at a time, therefore, the corresponding conveying channels 32 and material receiving baffles 33 are both provided with two, and two materials are conveyed at a time.

[0041] The carrying and pre-tightening device 6 comprises a first cylinder 61, a first supporting plate 62 driven by the first cylinder 61 to move along the radial direction of the dividing disc 1, a second cylinder 63 arranged on the first supporting plate 62, a second supporting plate 64 driven by the second cylinder 63 to move up and down, and a plurality of clamping and pre-tightening mechanisms 65 arranged on the second supporting plate 64. In the embodiment, two accommodation holes 21 are arranged on the carrier 2, two combination screws are processed at a time, therefore, the corresponding clamping and pre-tightening mechanisms 65 are provided with two, two products are clamped and pre-tightened at a time, and the production efficiency is improved.

[0042] The clamping pre-rotation mechanism 65 comprises a rotary lifting driving assembly 651, a rotary block 652 driven to rotate around a vertical shaft by the rotary lifting driving assembly 651, a third cylinder 653 arranged at the lower end of the rotary block 652, and a pair of first clamping jaws 654 driven to clamp or open by the third cylinder 653.

[0043] The rotary lifting driving assembly 651 comprises a first motor 6511, a first transmission shaft 6512 driven to rotate around a vertical shaft by the first motor 6511, a second transmission shaft 6513 arranged in parallel with the first transmission shaft 6512 and rotatably arranged on the second support plate 64, a lifting shaft 6518 movably arranged inside the second transmission shaft 6513, and an elastic member 6516 sleeved on the outer periphery of the lower end of the lifting shaft 6518, the first transmission shaft 6512 and the second transmission shaft 6513 are both provided with transmission wheels 6514, the first transmission shaft 6512 and the second transmission shaft 6513 are rotationally driven by a transmission belt 6515, the transmission belt 6515 is arranged on the transmission wheels 6514, and the transmission belt 6515 and the transmission wheels 6514 are both arranged at the lower end of the second support plate 64; the second support plate 64 is provided with a bearing sleeve, the outer periphery of the second transmission shaft 6513 is provided with a plurality of bearings 6517, and the second transmission shaft 6513 is installed in the bearing sleeve through the plurality of bearings 6517; the rotary block 652 is arranged at the lower end of the lifting shaft 6518, the second transmission shaft 6513 drives the lifting shaft 6518 to rotate, thereby driving the rotary block 652 to rotate, and thereby driving the first clamping jaw 654 to rotate, when the second transmission shaft 6513 drives the lifting shaft 6518 to rotate, in order to avoid the relative rotation between the lifting shaft 6518 and the second transmission shaft 6512, the outer periphery of the lifting shaft 6518 is cut to form a flat shaft; the upper end of the elastic member 6516 abuts against the bottom of the second transmission shaft 6513, and the lower end abuts against the upper end of the rotary block 652, and in this embodiment, the elastic member 6516 is a spring.

[0044] Since the upper end of the bolt 202 is a hexagonal structure, the clamping part of the first clamping jaw 654 is shaped according to the hexagonal structure of the upper end of the bolt 202, which facilitates the first clamping jaw 654 to clamp the bolt 202 and drive the bolt to rotate, thereby pre-rotating on the nut. Since the tightening force of the clamping pre-rotation mechanism 65 is limited, only pre-rotation can be performed, accurate assembly and pre-tightening of the bolt and the nut can be achieved, the bolt and the nut are pre-tightened during the process of being rotated and conveyed to the tightening device 7 by the indexing disc 1, the bolt will not be tilted when the bolt and the nut rotate on the indexing disc 1, thereby avoiding the problem of positioning deviation between the bolt and the nut, and the tightening device 7 arranged further tightens the bolt 202 and the nut.

[0045] The screwing device 7 comprises a mounting frame 71 and a plurality of screwing mechanisms 72 arranged on the mounting frame 71 and screwing the nut 201 and the bolt 202 to obtain the combined screw 200. In the embodiment, two accommodating holes 21 are arranged on the carrier 2, two combined screws are processed each time, and accordingly, the screwing mechanisms 72 are provided with two each time, two products are clamped and pre-screwed each time, and the production efficiency is improved.

[0046] The screwing mechanism 72 comprises a fourth cylinder 721, a second motor 723 arranged on a lifting frame 722 and driven by the fourth cylinder 721 to move up and down, a first rotating shaft 724 driven by the second motor 723 to rotate around a vertical shaft, a second rotating shaft 727 movably arranged in the lower end of the first rotating shaft 724, a screwing head 725 arranged at the bottom of the second rotating shaft 727, and an elastic module sleeved on the outer periphery of the second rotating shaft 727.

[0047] The lower end of the first rotating shaft 724 is internally provided with a clearance 7241 for the up-and-down movement of the second rotating shaft 727, the diameter of the first rotating shaft 724 is greater than that of the second rotating shaft 727, the second rotating shaft 727 is movably arranged in the first rotating shaft 724 through a transverse support shaft 7271, and a waist-shaped opening 7242 for the up-and-down movement of the support shaft 7271 is arranged on the outer periphery of the first rotating shaft 724 at the clearance 7241. In order to ensure the stability of the rotation of the first rotating shaft 724, the lifting frame 722 extends a transverse support block 7221, bearings 728 are arranged at the upper and lower ends of the first rotating shaft 724, and the first rotating shaft 724 is rotatably arranged on the support block 7221 through the bearings 728.

[0048] The elastic module comprises a flange ring 729 movably sleeved on the second rotating shaft 727 and an elastic member sleeved on the second rotating shaft 727, the lower end of the elastic member is connected to the upper end of the flange ring 729, the upper end abuts against the bottom of the first rotating shaft 724, the second rotating shaft 727 is provided below the flange ring 729 with a limiting cylinder 7210 for limiting the lower end of the flange ring 729, and the elastic member is a spring or other elastic structural member; a second sensor 726 for sensing the position of the flange ring 729 is arranged beside the flange ring 729. In order to prevent the elastic member from slipping off the bottom of the first rotating shaft 724, a accommodating groove 7222 for accommodating the elastic member is arranged at the bottom of the support block 7221 at the lower end, the upper end surface of the elastic member abuts against the bottom of the first rotating shaft 724 and the upper end periphery is limited in the accommodating groove 7222, so that the upper end of the elastic member can be prevented from slipping off.

[0049] The bottom of the screwing head 725 is provided with a profiling groove shaped according to the upper end of the bolt 202, the upper end of the bolt 202 is a hexagonal structure, and accordingly, the shape of the profiling groove is also provided with a hexagon, and the hexagonal structures are matched to facilitate the screwing of the bolt 202 and the nut 201.

[0050] The first camera 8 takes photos of the combination screw 200 to detect whether the appearance and size of the combination screw 200 are qualified, and the qualified product enters the good product collecting device 9, and the unqualified product enters the substandard product collecting device 10.

[0051] The good product collecting device 9 comprises a collecting module 91 and a second carrying mechanism 92 for carrying the detected good product on the carrier 2 to the collecting module 91.

[0052] The collecting module 91 is a receiving box or a collecting conveying line. If the detected good product is directly collected, the receiving box is used, and if the detected good product needs to be conveyed to the next processing station, the collecting conveying line is used. Here, the actual situation is set, and no limitation is made.

[0053] The substandard product collecting device 10 comprises a waste receiving box 101 and a third carrying mechanism 102 for carrying the substandard product on the carrier 2 to the waste receiving box 101.

[0054] The first carrying mechanism 4, the second carrying mechanism 92 and the third carrying mechanism 102 have the same structure and each comprise a fifth cylinder 41, a third support plate 42 driven by the fifth cylinder 41 to move radially along the indexing disc 1, a sixth cylinder 43 arranged on the third support plate 42, a fourth support plate 44 driven by the sixth cylinder 43 to move up and down, and a plurality of clamping assemblies 45 fixed on the fourth support plate 44. In the embodiment, two accommodating holes 21 are arranged on the carrier 2, two combination screws are processed each time, and correspondingly, two clamping assemblies 45 are arranged on the fourth support plate 44. The clamping assembly 45 comprises a clamping cylinder 451 and a pair of second clamping jaws 452 driven by the clamping cylinder 451 to clamp or open.

[0055] In order to ensure that the second clamping jaws 452 of the second carrying mechanism 92 and the third carrying mechanism 102 successfully clamp the combination screw, a jacking assembly 30 for jacking up the combination screw is arranged below the accommodating hole 21 of the carrier 2 at the good product collecting device 9 and the substandard product collecting device 10. The jacking assembly 30 comprises a jacking cylinder 301 and a jacking rod 302 driven by the jacking cylinder 301 to extend into the avoiding through hole to jacks up the combination screw 200 upward, so as to facilitate the second clamping jaws 452 of the second carrying mechanism 92 and the third carrying mechanism 102 to successfully clamp the combination screw.

[0056] When the automatic assembling and detecting device 100 of the combined screw is applied, the nut supply device 3 outputs the nut 201, the first carrying mechanism 4 carries the nut 201 to the accommodating hole 21 on the carrier 2, the second clamping jaw 452 rises, the carrier 2 carrying the nut 201 is transported to below the carrying pre-rotation device 6 by the indexing disc 1, meanwhile, the bolt supply device 5 outputs the bolt 202, the first clamping jaw 654 of the carrying pre-rotation device 6 carries the bolt 202 above the nut 201, the first cylinder 61 drives the first supporting plate 62 to descend, the first clamping jaw 654 contacts the nut 201 to make the lifting shaft 6518 rise, so that the elastic member 6516 is compressed, the first motor 6511 drives the first transmission shaft 6512 to rotate, so that the lifting shaft 6518 drives the rotating block 652 to rotate, so that the first clamping jaw 654 is driven to rotate and descend at the same time, so that the pre-rotation of the bolt and the nut is realized; the first clamping jaw 654 rises, the pre-rotated nut and the bolt are transported to below the tightening device 7 by the indexing disc 1, the fourth cylinder 721 drives the fourth cylinder 721 to descend, the tightening head 725 contacts the upper end of the bolt 202, so that the second rotating shaft 727 rises in the avoiding gap 7241, at this time, the limiting cylinder 7210 drives the flange ring 729 to rise, the elastic member is compressed, the second motor 723 drives the first rotating shaft 724 to drive the second rotating shaft 727 to rotate, at the same time, the elastic member stretches to drive the flange ring 729 to move downward, so that the limiting cylinder 7210 moves downward, so that the second rotating shaft 727 rotates and moves downward at the same time, so that the profiled groove of the tightening head 725 cooperates with the upper end of the bolt to make the bolt and the nut be tightened; if the combined screw has been tightened, at this time, the flange ring 729 moves downward to the position, the second sensor 726 can sense the flange ring 729, so that the assembled screw is qualified, the second carrying mechanism 92 carries the qualified assembled screw to the receiving module 91; if the combined screw has not been tightened, at this time, the flange ring 729 does not move downward to the position, the second sensor 726 cannot sense the flange ring 729, so that the assembled screw is unqualified, the third carrying mechanism 102 carries the unqualified assembled screw to the waste box 101, so that the assembling and detecting of the combined screw are completed, when the second carrying mechanism 92 and the third carrying mechanism 102 grab the combined screw 200 from the carrier 2, the jacking cylinder 301 drives the jack 302 to jack up the combined screw.

[0057] The above only describes some embodiments of the present application. Those skilled in the art can make some modifications and improvements without departing from the inventive concept of the present application, which are all within the protection scope of the present application.

Claims

1. An automatic assembly detection device for combination screws, characterized by: It includes a dividing plate, a driving module for driving the dividing plate to rotate, a plurality of carriers arranged at equal angles along the circumference of the dividing plate, and a nut feeding device surrounding the outer circumference of the dividing plate and arranged in sequence along the conveying direction, a first conveying mechanism for conveying the nuts on the nut feeding device to the carrier, a bolt feeding device, a conveying and pre-tightening device for conveying the bolts on the bolt feeding device to the nuts on the carrier and pre-tightening the bolts and the nuts, a tightening device for tightening the nuts and bolts to obtain a combined screw, an inspection camera for performing appearance inspection on the combined screws, a good product receiving device and a defective product receiving device.

2. The automatic assembly and detection equipment for combination screws according to claim 1, characterized in that: The nut feeding device and the bolt feeding device both include a vibration plate that outputs materials in the same state, a plurality of conveying channels arranged at the output end of the vibration plate, a material receiving baffle arranged at the output end of the conveying channel, and a direct vibration module arranged below the conveying channel and transporting the material in the conveying channel to the material receiving baffle, and a first sensor for sensing the material is provided on the material receiving baffle.

3. The automatic assembly and detection equipment for combination screws according to claim 1, characterized in that: The transport and pre-spinning device includes a first cylinder, a first support plate driven by the first cylinder to move radially along the indexing plate, a second cylinder arranged on the first support plate, a second support plate driven by the second cylinder to move up and down, and a plurality of clamping and pre-spinning mechanisms arranged on the second support plate.

4. The automatic assembly and detection equipment for combination screws according to claim 3, characterized in that: The clamping and pre-rotating mechanism includes a rotary lifting drive assembly, a rotating block driven by the rotary lifting drive assembly to rotate around a vertical axis, a third cylinder arranged at the lower end of the rotating block, and a pair of first clamping jaws driven by the third cylinder to clamp or open.

5. The automatic assembly and detection equipment for combination screws according to claim 4, characterized in that: The rotary lifting drive assembly includes a first motor, a first transmission shaft driven by the first motor to rotate around a vertical axis, a second transmission shaft arranged parallel to the first transmission shaft and rotatably arranged on the second support plate, a lifting shaft arranged inside the second transmission shaft for vertical movement, and an elastic member sleeved on the outer periphery of the lower end of the lifting shaft, the first transmission shaft and the second transmission shaft realize rotational transmission through a transmission belt; the rotating block is arranged at the lower end of the lifting shaft, the upper end of the elastic member abuts against the bottom of the second transmission shaft, and the lower end abuts against the upper end of the rotating block.

6. The automatic assembly and detection equipment for combination screws according to claim 1, characterized in that: The tightening device includes several tightening mechanisms for tightening nuts and bolts to obtain combined screws. The tightening mechanisms include a fourth cylinder, a lifting frame driven by the fourth cylinder to move up and down, a second motor arranged on the lifting frame, a first rotating shaft driven by the second motor to rotate around a vertical axis, a second rotating shaft movable up and down and arranged inside the lower end of the first rotating shaft, a tightening head arranged at the bottom of the second rotating shaft, and an elastic module sleeved on the outer circumference of the second rotating shaft.

7. The automatic assembly and detection equipment for combination screws according to claim 6, characterized in that: The lower end of the first rotating shaft is provided with an avoidance gap for the second rotating shaft to move up and down. The second rotating shaft is movably arranged inside the first rotating shaft through a horizontal support shaft, and a waist-shaped opening for the support shaft to move up and down is provided on the outer periphery of the first rotating shaft where the avoidance gap is located; the elastic module includes a flange ring movably mounted on the second rotating shaft and an elastic member mounted on the second rotating shaft, the lower end of the elastic member is connected to the upper end of the flange ring, and the upper end is abutted against the bottom of the first rotating shaft, and the second rotating shaft is provided with a limiting cylinder below the flange ring to limit the flange ring to the lower position, and a second sensor for sensing the position of the flange ring is provided on the side of the flange ring.

8. The automatic assembly and detection equipment for combination screws according to claim 1, characterized in that: The good product receiving device includes a receiving module and a second conveying mechanism for conveying the good products inspected on the carrier to the receiving module; the defective product receiving device includes a waste receiving box and a third conveying mechanism for conveying the defective products on the carrier to the waste receiving box.

9. The automatic assembly and detection equipment for combination screws according to claim 8, characterized in that: The first conveying mechanism, the second conveying mechanism and the third conveying mechanism have the same structure and all include a fifth cylinder, a third support plate driven by the fifth cylinder to move radially along the dividing plate, a sixth cylinder arranged on the third support plate, a fourth support plate driven by the sixth cylinder to move up and down, and a plurality of clamping assemblies fixed on the fourth support plate; the clamping assembly includes a clamping cylinder and a pair of second clamping jaws driven by the clamping cylinder to clamp or open.

10. The automatic assembly and detection equipment for combination screws according to claim 1, characterized in that: The carrier is provided with a plurality of accommodating holes that are shaped like nuts, and the dividing plate is provided with avoidance through holes at positions corresponding to the accommodating holes. A jacking assembly for lifting the combination screw upward is provided below the accommodating holes at the good product receiving device and the defective product receiving device. The jacking assembly includes a jacking cylinder and a jacking rod driven by the jacking cylinder and extending into the avoidance through hole to lift the combination screw upward.

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