Stable delivery device for screws and detection apparatus

Abstract

The application discloses a stable conveying device for screws and a detection equipment, which belongs to the field of screw detection equipment and comprises a conveying part, a driving device for providing driving force, a driven device for keeping the conveying part in a tension state, and a coupling connection between the conveying part and the driving device and the driven device, so that the conveying part circulates between the driving device and the driven device to convey the screws, the driving device and the driven device are fixed on a fixed support, the conveying part has a material collecting end and a feeding end, the material collecting end is close to the direction of the screw source and is used for collecting the screws, the feeding end is close to the next processing station and is used for conveying the screws to the next processing station, a magnetic device is further arranged on the lower surface of the upper end of the conveying part and is used for generating a magnetic force, so that the screws can be adsorbed to the conveying part and move together with the conveying part. Through the design of the magnetic device and the cooperation of the demagnetization structure, the magnetic force of the magnetic field is linearly weakened, and the screws can be more smoothly handed over.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of screw detection equipment, in particular to a stable conveying device for screws and a detection equipment BACKGROUND

[0002] The screw detection equipment and conveying device currently used in the market generally use a vibrating disc to convey and directly send to the detection table. However, the current conveying device has the problems of unstable conveying and easy congestion, resulting in low efficiency. For example, there are two technical solutions for direct conveying to the detection table. One is that the conveying device is higher than the detection table (see FIG. 1). The purpose of this design is to solve the problem of contact between the conveying device and the detection table. If the vibrating disc directly contacts the table, it will cause the table to vibrate, resulting in detection errors or even damage to the detection table. However, this design has the problem that there is a height difference between the conveying device and the detection table. During the process of pushing the screw to the table, the height difference will cause the screw to tip over. Through actual use, the higher the height of the screw, the more unstable it is because of its high center of gravity. The other technical solution is that the conveying device and the detection table are close in the horizontal direction, so that they are in the same plane, thereby solving the problem of height difference. However, this solution has another disadvantage, which is that there is a gap between the two in the horizontal direction (if there is no gap, there is also the defect of vibration transmission). Generally, the screw cap end has a screwing gap, which is very easy to interfere with the gap, causing the screw to be blocked at the gap, causing the vibrating disc conveying system to stop working, and often requiring manual intervention to solve the problem. In order to solve this problem, some enterprises use clamping to feed one by one, that is, the detection table is made into a circular shape, and a plurality of receiving holes are arranged on the edge of the circular table (see FIG. 2). The rotation speed of the circular table and the feeding speed of the conveying device are adjusted to be consistent, so that the screws are fed one by one into the receiving holes, and the cap is supported by the receiving holes. The advantage of this design is that the cap is upward and the screw rod is downward, which solves the problem of unstable screw and congestion. However, this method has low efficiency and poor applicability. Because the rotation speed of the table cannot be too fast, if it is too fast, the screw will be thrown out due to the centrifugal force. In addition, because the size of the cap is not consistent with the size of the stud, different specifications of screws require different sizes of tables, resulting in increased cost. In addition, the drilling space on one table is limited, resulting in low detection efficiency. Figure 1 Figure 2

[0003] Based on the above reasons, it is necessary to design a conveying device of a vibrating disc and a detection table that cannot directly contact each other, while ensuring stable conveying of screws, strong applicability, and high efficiency of the conveying device and the corresponding detection equipment. SUMMARY​​

[0004] The present application aims at solving the above defects, providing a stable conveying device for screws and a detection equipment, which can achieve the purpose of stable and efficient conveying of screws and improve the applicability to meet the detection of various screws.

[0005] The stable conveying device for screws of the present application is achieved by the following means:

[0006] The conveying device comprises a conveying part, a driving device for providing driving force, a driven device for keeping the conveying part in tension, and the conveying part is coupled with the driving device and the driven device to make the conveying part circulate between the driving device and the driven device for conveying screws. The driving device and the driven device are fixed on a fixed support, and the conveying part has a receiving end and a feeding end. The receiving end is close to the direction of the source of screws for collecting screws, and the feeding end is close to the next processing station for conveying screws to the next processing station. A magnetic device is further arranged on the lower surface of the conveying part for generating magnetic force to make the screws and the conveying part be adsorbed as a whole and move together with the conveying part. The tension of the driving device and the driven device can keep the conveying part in a stable conveying state. The design of the magnetic device can adsorb the screws on the conveying part. Because of the principle of magnetic force, the magnetic device and the screws are attracted to each other, and the force generated between them is applied to the conveying part and clamps the conveying part, so that the screws can be stably fixed on the conveying part in any direction and will not fall over. When the conveying part moves, the screws can also move together with the conveying part, thereby achieving the purpose of stable conveying.

[0007] In the above description, as a preferred solution, the magnetic device is fixedly arranged, and the length of the magnetic device is less than the length of the conveying part, relative movement is generated between the conveying part and the magnetic device, so that the points on the conveying part can cyclically appear in the magnetic field environment and the non-magnetic environment, thereby realizing the purpose of stable conveying and transfer of the screw. The purpose of fixedly arranging the magnetic device is to control the magnetic force range generated by the magnetic field in the required area, and the conveying part and the magnetic device are relatively moved, so that the position and direction of the two are relatively independent. Thus, each point on the conveying part cyclically appears in the magnetic field environment and the non-magnetic environment. In the magnetic field environment, the screw is adsorbed on the conveying part by the action of the magnetic force, and in the non-magnetic environment, the screw loses the constraint of the magnetic force, so that it can smoothly and stably enter the next work station. Generally, the subsequent work scene is mostly processing or detection, which cannot be affected by the magnetic field in this environment. Therefore, by this design scheme, the risk of the subsequent work scene can be reduced. At the same time, the direction and structure of the conveying part can be set according to the required conveying position, which is more suitable for subsequent processing work, and the overall conveying device structure is relatively simple and effective. Because of the action of the magnetic force, the conveying part and the screw move as a whole, and the friction force and inertia between the screw and the conveying part, the movement direction and trajectory of the screw are more affected by the conveying part. Moreover, through the independent design of the magnetic device and the conveying part, the space for adjusting and improving the conveying part is larger, so that the applicability is more extensive, and such improvement will not affect the magnetic device. It is convenient for later adjustment.

[0008] In the above description, as a preferred solution, the magnetic device is arranged on the side of the conveying part at the receiving end, the driven device is arranged at the receiving end, and the driving device is arranged at the feeding end. In order to facilitate the collection of the conveyed screw, the magnetic device is arranged on the side of the receiving end. The purpose of this arrangement is to facilitate flexible material collection mode, because the material collection mode determines the application range of the conveying device. When the magnetic device is arranged on the side of the receiving end, the material collection is relatively smooth, and various forms of material collection scenes are formed. The screw can be collected in the horizontal direction, or the screw can be collected at other angles. Because of the existence of the magnetic force, the screw can be adsorbed at any angle, so as to be stably arranged on the conveying part.

[0009] In the above description, as a preferred scheme, the magnetic device extends from the material receiving end to the material feeding end, and a demagnetization structure is arranged near the material feeding end to linearly weaken the magnetic force, so that the screw can be smoothly handed over. The design advantage of using the demagnetization structure is that the linear weakening of the magnetic field strength can be achieved. Thus, the entire stable conveying device has three magnetic field states. One is a stable strong magnetic field, which enables the screw to be stably and reliably handed over to the conveying part. One is a linearly weakened weak magnetic field environment, which enables the magnetic force acting on the screw to change from strong to weak. The third one is a non-magnetic field environment, that is, the screw is separated from the weak magnetic field and enters the non-magnetic field environment. This design scheme can gradually weaken the magnetic force acting on the screw from strong to none, achieve smooth handover, and finally enable the conveying device to smoothly convey the screw to the next station and process or detect it in the non-magnetic environment. If a stable magnetic device is used, it will lead to difficult handover and low efficiency. Because the magnetic force control range is large, when the screw suddenly enters the non-magnetic range from the magnetic range, the screw will be dragged from the non-magnetic range to the magnetic range under the action of the magnetic force, thereby causing the conveying to be blocked or the screw to be tilted. In order to solve this defect, the design of the demagnetization structure gradually reduces the magnetic influence range instead of suddenly disappearing, thereby gradually weakening the magnetic force acting on the screw, solving the problem of uneven force acting on the screw, preventing the screw from being blocked or tilted, and achieving the purpose of smooth conveying at the material feeding end of the conveying part.

[0010] In the above description, as a preferred scheme, the driven device is a driven wheel with a groove, the other end of the magnetic device extends towards the driven wheel, is inserted between the conveying part and the driven wheel, and wraps the driven wheel along the groove in the circumferential direction of the driven wheel. The arc length of the wrapped driven wheel is not less than the arc length of the coupling connection between the conveying part and the driven wheel, and the magnetic device remains in a static state for adsorbing and overturning the screw. When conveying various screws, if the screw is short and small, the magnetic device can be directly arranged below the conveying part in the horizontal direction. However, when conveying long screw rods, because the center of gravity is high, it is very unstable, and a slight uneven force or vibration will cause the screw to tilt. Therefore, in this case, the best direction of the long screw rod conveyed by the vibration disc is that the nut is upward and the screw rod is downward, and the screw is conveyed by supporting the nut. This can solve the problem of too high center of gravity. However, in actual operation and subsequent processing, it is necessary to make the nut downward and the screw rod upward. In order to facilitate the conveying of such screws, the screw needs to be overturned. Therefore, the magnetic device wraps the driven wheel to adsorb the nut of the screw from above the vibration disc, so that the screw is overturned when the driving wheel rotates. Because of the continuous magnetic adsorption, the long screw rod can be stably erected on the surface of the conveying part. The purpose of overturning and conveying is achieved.

[0011] In the above description, as a preferred scheme, the conveying part is a belt, and a supporting plate is further arranged below the belt, the supporting plate is used for supporting the belt, the belt moves along the supporting plate in a stable state, the magnetic device is fixedly arranged between the supporting plate and the belt, the supporting plate is provided with a groove, the size of the groove corresponds to the size of the magnetic device, the magnetic device is matched with the surface of the supporting plate to form a plane, the thickness of the belt is 0.02-0.8 mm, and the magnetic device is a soft magnetic strip, and the width of the magnetic strip is smaller than the width of the belt. The conveying part can adopt various modes, such as a belt, a hose, an expansion joint and the like. In the present application, a simple belt conveying mode is adopted, the stability of conveying is ensured through the supporting plate below the belt, the belt is prevented from collapsing due to gravity to affect the stability of conveying, and the purpose of fixed installation is achieved through the magnetic device fixedly arranged on the supporting plate. In order to ensure more stable conveying, the thickness of the belt is set to be 0.02-0.8 mm, and the purpose is to ensure that the screw is conveyed to the next station more stably. If the thickness of the belt is too thick, the screw is prone to be unstable. The soft magnetic strip is used to facilitate production and processing, so that the cost is lower and the soft magnetic strip is more convenient to bend.

[0012] In the above description, as a preferred scheme, the soft magnetic strip is fixed in the groove of the supporting plate, two constraint strips are further arranged on the groove, the soft magnetic strip is in an inverted T-shaped structure, the constraint strips are pressed on both sides of the soft magnetic strip, and the magnetic strip is fixed through the screw arranged on the constraint strips.

[0013] In the above description, as a preferred scheme, a downward acute angle inclined part is formed on one side of the soft magnetic strip close to the feeding end, the magnetic reduction structure is formed by the acute angle inclined part, the distance of the magnetic field is increased and the mass of the magnetic strip is reduced, and the purpose of reducing the magnetic field strength is achieved. The design is simple and convenient, the magnetic force generated by the magnetic strip is gradually weakened along the direction perpendicular to the conveying part through the acute angle structure formed by the magnetic strip. The principle of the technical scheme is that the distance of the magnetic field is increased and the mass of the effective magnet is reduced, the purpose of reducing the magnetic field strength is achieved, the acute angle triangular design scheme is used to achieve the purpose of linearly reducing the magnetic field strength, the magnetic force is more uniformly reduced, and the state of the screw is more stable, so that the screw is not prone to be tilted or stacked.

[0014] The second magnetic reduction structure is that the magnetic reduction structure is a wedge-shaped acute angle triangular block, the triangular block is arranged between the belt and the soft magnetic strip, the smallest angle of the triangular block is inserted between the belt and the soft magnetic strip and faces the material receiving end, the bottom edge of the triangular block faces the feeding end, the distance between the belt and the soft magnetic strip gradually increases towards the feeding end, and the purpose of reducing the magnetic field strength is achieved. Through the increase of the distance between the magnetic device and the conveying part, the magnetic field strength is gradually weakened, and the same purpose of linearly reducing the magnetic force is achieved.

[0015] The detection equipment using the stable conveying device comprises a stable conveying device, a vibrating feeding device and a detection device, the vibrating feeding device is arranged on one side of a feeding end, screws are sent to the stable conveying device through vibration, and the detection device is arranged on one side of the feeding end.

[0016] In the above description, as a preferred scheme, the detection device comprises a detection table and a support frame supporting the detection table, and a camera arranged around the detection table, the camera being used for video detection of the quality of the screws.

[0017] In the above description, as a preferred scheme, the detection table is a circular structure made of transparent material, a lower driving motor is arranged in the middle of the support frame, the detection table is driven to rotate, the rotating direction is consistent with the moving direction of the conveying part, a screw guide device is further arranged above the detection table, the screw guide device is used for guiding the screws from the stable conveying device to the detection table while maintaining the stability of the screws, and a partial arc surface of the detection table is arranged between the driving device and the driven device of the stable conveying device and close to the end point of the feeding end, the position of the arc surface is below the conveying part and in contact with the lower surface of the conveying part. The screw guide device is used for guiding the screws from the conveying part of the stable conveying device to the detection table, in order to facilitate the smooth guiding of the screws, the partial arc surface of the detection table is arranged below the conveying part and overlaps the conveying part, at the overlapping position, the screw guide device pushes the screws from the conveying part to the detection table, the position of the detection table is at the end of the demagnetization structure, the screws completely leave the control of the magnetic field and smoothly enter the detection station.

[0018] In the above description, as a preferred scheme, the screw guide device is a disc, a connecting column is arranged in the middle of the disc, an upper driving motor is further arranged above the connecting column, the connecting column is connected with the upper driving motor, the disc is driven to rotate, the rotating direction is matched with the moving direction of the detection table and the conveying part, thereby achieving the stability of the screws, the part close to the feeding end of the conveying part moves in contact with the edge of the detection table, the demagnetization structure is close to the detection table, the magnetic force gradually weakens when the screws are conveyed to the detection table through the conveying part, the screw guide device is arranged above the conveying part and there is a gap between the screw guide device and the conveying part, the thickness of the gap corresponds to the size of the screw cap, after the screw cap is clamped by the screw guide device, the screw is pushed away from the conveying part through rotation, thereby entering the detection table. The gap between the screw guide device and the conveying part is designed to further enhance the stability of the screw transfer, the screw cap is clamped between the conveying part and the screw guide device, the rotation of the screw guide device is matched with the advancing direction of the conveying part, thereby stably conveying the screw to the detection table in a non-magnetic environment and maintaining the stability, at the same time, the screw is sent to the camera station for detection through the rotation of the detection table. The defective ones are selected out by the selection mechanism and enter the waste box, and the good ones are collected by the collection mechanism.

[0019] The beneficial effects generated by the present application are: through the design of the magnetic device, combined with the demagnetization structure, the magnetic force of the magnetic field is linearly weakened, so that the screw can be more smoothly connected. Through the improvement of the stability of the screw and the fast transportation mode, the applicability of this design scheme is wide, and different types of screws can be applied without high-cost transformation. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The schematic diagram of the screw feeding structure from the top in the prior art;

[0021] Figure 2 The schematic diagram of the screw clamping and conveying structure in the prior art;

[0022] Figure 3 The schematic diagram of the conveying device combination structure of the present application;

[0023] Figure 4 The schematic diagram of the disassembly structure of the conveying device of the present application;

[0024] Figure 5 The schematic diagram of the support plate structure of the conveying device of the present application;

[0025] Figure 6 The schematic diagram of the Figure 5 A-A sectional view (first embodiment) schematic diagram;

[0026] Figure 7 The schematic diagram of the Figure 5 A-A sectional view (second embodiment) schematic diagram;

[0027] Figure 8 The schematic diagram of the detection equipment structure;

[0028] Figure 9 The schematic diagram of the detection equipment structure;

[0029] Figure 10 The schematic diagram of the screw guide device and connecting column structure;

[0030] Figure 11 The schematic diagram of the conveying device feeding from the top of the present application;

[0031] Figure 12 The magnetic field influence distribution diagram of the conveying device;

[0032] Figure 13 The A-1 local enlarged view of the Figure 3

[0033] ​In the figure, 1 is a belt, 101 is a material receiving end, 102 is a feeding end, 103 is a demagnetization structure, 2 is a driving wheel, 3 is a driven wheel, 301 is a tensioning wheel, 4 is a fixed support, 401 is a tensioning strip, 5 is a soft magnetic strip, 6 is a support plate, 601 is a groove, 602 is a constraint strip, 7 is a vibrating feeding device, 701 is a feeding track, 8 is a detection device, 801 is a detection table, 802 is a support frame, 803 is a camera, 804 is a lower driving motor, 805 is a screw guide device, 8051 is a connecting column, 806 is an upper driving motor; DETAILED DESCRIPTION

[0034] The application will be further described in detail below with reference to the drawings and specific embodiments.

[0035] A stable conveying device for screws:

[0036] In the embodiment, the conveying device is composed of a conveying belt, a conveying belt driving motor, a support plate 6, a soft magnetic strip 5 and a driving device. The conveying belt can be a belt 1, a nylon belt, a rubber belt or a cloth belt. In this embodiment, the conveying belt is a belt 1. The belt 1 is sleeved above the support plate 6. The support plate 6 is provided with a groove 601 between the belt 1 and the support plate 6. The soft magnetic strip 5 is arranged below the belt 1 and inlaid in the groove 601 of the support plate 6, for generating a magnetic force to enable the screw to be adsorbed with the belt 1 and move together with the belt 1. The soft magnetic strip 5 is fixedly arranged. The belt 1 and the soft magnetic strip 5 will move relatively. The belt 1 rotates continuously and circulates on the soft magnetic strip 5, so that each point on the conveying part can circulate in a magnetic field environment and a non-magnetic environment, thereby forming that the screw is adsorbed on the belt 1 when affected by the magnetic force and is transferred and handed over stably by using the inertia and friction force when losing the magnetic force. The driving device is composed of a driving wheel 2, a driven wheel 3, a tensioning wheel 301 and a fixed support 4. The driving wheel 2 is used to drive the belt 1 to rotate and convey the screw. The driven wheel 3 is used to rotate cooperatively with the driving wheel 2. The tensioning wheel 301 is used to adjust and tension the belt 1, so that the belt 1 will not be slackened or dropped. The fixed support 4 is arranged below the support plate 6 and is used to fix the driving device.

[0037] The driving wheel 2 and the tensioning wheel 301 are fixed on the front support by a screw rod, and then the whole is fixed on the support plate 6 at the position close to the feeding end 102 side; the driven wheel 3 and the tensioning wheel 301 are fixed on the rear support by a screw rod, and are fixed on the support plate 6 at the position close to the collecting end 101 side; the driven wheel 3 and the tensioning wheel 301 are arranged in parallel on the rear support, and the front support is L-shaped, wherein the driving wheel 2 is arranged at one end of the horizontal side of the front support, and the tensioning wheel 301 is arranged at one end of the vertical side of the front support, and the vertical side is the tensioning strip 401, the tensioning strip 401 is provided with a track, and the tensioning wheel 301 can move up and down, and the fixed support 4 is arranged below the tensioning strip 401, and is used for supporting the whole support plate 6.

[0038] The support plate 6 is provided with a groove 601, the size of the groove 601 corresponds to the size of the soft magnetic strip 5, and the soft magnetic strip 5 forms a plane with the surface of the support plate 6 after being arranged in the groove 601, the thickness of the belt 1 is 0.02 mm, and the width of the soft magnetic strip 5 is less than the width of the belt 1. Two constraint strips 602 are further arranged on the groove 601, the soft magnetic strip 5 has an inverted T-shaped structure, the constraint strips 602 are pressed on both sides of the soft magnetic strip 5, and the soft magnetic strip 5 is fixed by a screw arranged on the constraint strip 602.

[0039] The magnetic strip is mainly arranged on the collecting end 101 side of the conveying belt 1, and is not arranged on the feeding end 102 side. The purpose of this arrangement is to control the influence range of the magnetic field on the collecting end 101 side. In this way, the screw can be attracted and conveyed, and when it reaches the feeding end 102, the handover will not be affected by the magnetic force. The whole conveying device is divided into three magnetic field interval sections. 1. The strong magnetic field section, in this section, the magnetic field has a greater influence, and the magnetic force is stronger. The screw can be attracted and stably conveyed at any position in this section, so the vibration feeding device 7 can be arranged at any position in this section, and the applicability is wide. 2. The weak magnetic field section, in this section, the influence of the magnetic field gradually weakens, and the corresponding magnetic force gradually weakens. The screw gradually separates from the magnetic force control, which facilitates the screw to stably enter the next station. 3. The non-magnetic field section, in this section, there is no influence of any magnetic force, which prevents some small impurities from being continuously attracted and affecting the subsequent production. The advantage of this structure design is that it can completely ensure the generation of faults and impurities as required, and guarantee efficient production throughout the process. It is better than the design of having a magnetic field throughout the process or the design of having no magnetic field throughout the process.

[0040] The magnetic strip is installed from the side close to the feeding end 102 to the driven wheel 3, and wraps around the driven wheel 3. The arc length of the wrapped driven wheel 3 is not less than the arc length of the coupling connection between the belt 1 and the driven wheel 3, and the magnetic device remains in a static state, which is used for attracting and turning the screw.

[0041] A wedge-shaped acute triangular block is arranged between the belt 1 and the soft magnetic strip 5, the triangular block makes the side of the soft magnetic strip 5 close to the feeding end 102 concave downward, the smallest angle of the wedge-shaped acute triangular block is inserted between the belt 1 and the soft magnetic strip 5, and is directed to the receiving end 101, the bottom edge of the triangular block is directed to the feeding end 102, so that the distance between the magnetic device and the conveying part gradually increases in the direction of the feeding end 102, thereby weakening the magnetic force.

[0042] Example two: compared with example one, only the demagnetization scheme is modified, the demagnetization scheme of example two is not to use a wedge-shaped acute triangular block, but to cut a block on the side of the soft magnetic strip 5 close to the feeding end 102, so that a space is formed above the cut part of the belt 1 and the soft magnetic strip 5, the existence of the space increases the magnetic field distance, and by increasing the magnetic field distance and reducing the mass of the magnetic strip, the purpose of reducing the magnetic field strength is achieved.

[0043] The detection device for the stable conveying device for screws is composed of a detection table 801, a support frame 802, a camera 803 and a screw guide device 805.

[0044] The detection table 801 is a disc-shaped structure made of transparent material, and the periphery of the detection table 801 is provided with an air gun and a camera 803, the camera 803 detects screws by video technology, and abnormal screws are blown into the waste port by the air gun; the support frame 802 is used to support the detection table 801, and a lower driving motor 804 is arranged in the middle of the support frame 802 to drive the detection table 801 to rotate. A screw guide device 805 is further arranged above the detection table 801 to guide the screws from the conveying device to the detection table 801 while maintaining the stability of the screws.

[0045] The screw guide device 805 is a disc, a connecting column 8051 is arranged in the middle of the disc, an upper driving motor 806 is further arranged above the connecting column 8051, the connecting column 8051 is connected with the upper driving motor 806, so that the disc rotates and the screw guide device 805 is matched with the movement direction of the detection table 801 and the conveying device, achieving the purpose of stabilizing the screws during guiding. The part of the conveying device close to the feeding end 102 side moves in contact with the edge of the detection table 801, the demagnetization structure 103 is close to the detection table 801, so that the magnetic force of the screws gradually weakens when the screws are conveyed to the detection table 801 through the conveying device; the screw guide device 805 is located above the conveying device, and there is a gap between the screw guide device 805 and the conveying device, the thickness of the gap corresponds to the size of the screw cap, after the screw cap is clamped by the screw guide device 805, the screw is pushed away from the conveying part by rotation, so as to enter the detection table 801.

[0046] The device is used in cooperation with the vibration feeding device 7, which is arranged near the receiving end 101 of the conveying device, and is provided with a feeding track 701 close to the receiving end 101 of the conveying device, and a large number of undetected screws are placed in the vibration feeding device 7, and the screws are shaken out of the vibration feeding device 7 and sent to the conveying device through the feeding track 701.

[0047] First, the undetected screws are placed in the vibration feeding device 7, and the vibration feeding device 7 arranges and combines the screws by vibration, and then the screws are sent to the feeding track 701 of the vibration feeding device 7, and the feeding track 701 is in contact with or close to the receiving end 101 of the conveying device, and the screws are adsorbed from the feeding track 701 to the belt 1 through the soft magnetic strip 5 in the conveying device, and the screw cap is in contact with the belt 1 of the conveying device; the screws are conveyed from the receiving end 101 of the conveying device to the feeding end 102, and during the conveying, the screws pass through the magnetic reduction structure 103 of the conveying device, and the magnetic force on the screws is reduced through the magnetic reduction structure 103, and then the screws are sequentially sent to the detection platform 801 of the detection device 8 through the rotation of the screw guiding device 805; the screws on the detection platform 801 are detected by the camera 803, and whether the screws are qualified can be detected, and the unqualified screws are blown into the waste port by the air gun. The qualified screws are collected by the collecting device.

[0048] The soft magnetic strip 5 in the application is a rubber magnetic strip, which is composed of magnetic powder (SrO6, Fe2O3), chlorinated polyethylene (CPE) and other additives (EBSO, DOP) and the like, and is manufactured by extrusion and calendering. The rubber magnet can be homogenous or heterogeneous, and can be bent, twisted and rolled. It can be used without more mechanical processing, and can be trimmed in shape according to the required size, and can be coated with PVC, back glue, UV oil and the like according to the requirements of customers. It can be purchased through the website of Shanghai Huichuang Magnetic Industry Co., Ltd. in Ali, and the website link of the company is: https: / / shhcciye.1688.com / page / index.html?spm= 0.0.wp_pc_comm on_header_undefined.0 .

[0049] The conveying part can be a belt 1, a nylon belt, a rubber belt or a cloth belt.

[0050] The above content is a further detailed description of the application in combination with specific preferred embodiments, and cannot be regarded as the specific implementation of the application being limited to these descriptions. For ordinary skilled persons in the technical field to which the application belongs, some simple deductions or substitutions can be made without departing from the concept of the application, and all of them should be regarded as the protection scope of the application.

Claims

1. A stabilizing conveyor for screws, characterized by: The device comprises a conveying part, a driving device for providing driving force, a driven device for keeping the conveying part in tension, and the conveying part is coupled with the driving device and the driven device to make the conveying part circulate between the driving device and the driven device, and the driving device and the driven device are fixed on a fixed support (4), the conveying part comprises a receiving end (101) and a feeding end (102), the receiving end (101) is close to the direction of the screw source and is used for collecting screws, and the feeding end (102) is close to the next processing station and is used for feeding the screws to the next processing station, a magnetic device is further arranged on the lower surface of the conveying part, and the magnetic device is used for generating a magnetic field and a magnetic force, so that the screw can be adsorbed with the conveying part as a whole and moves together with the conveying part, the magnetic device is fixedly arranged, the length of the magnetic device is less than the length of the conveying part, relative movement is generated between the conveying part and the magnetic device, so that each point on the conveying part can appear in the magnetic field environment and the non-magnetic environment, thereby realizing the stable conveying and transfer of the screw, the magnetic device extends from the receiving end (101) to the feeding end (102), a demagnetization structure (103) is arranged at the end of the magnetic device close to the feeding end (102), the magnetic force of the magnetic field is linearly weakened, and no magnetic device is arranged on the other side of the feeding end (102), so that the screw can be more stably transferred, the screw is adsorbed and stably conveyed to a detection device (8) by the stable conveying device, the driven device is a driven wheel (3) with a groove (601), the other end of the magnetic device extends to the driven wheel (3) and is inserted between the conveying part and the driven wheel (3), and the magnetic device wraps the driven wheel (3) along the groove (601) in the circumferential direction of the driven wheel (3), the arc length of the wrapped driven wheel (3) is not less than the arc length of the coupling connection between the conveying part and the driven wheel (3), and the magnetic device remains in a static state and is used for adsorbing and overturning the screw, the detection device (8) is arranged on one side of the feeding end (102), and the detection device (8) comprises a detection table (801), a screw guide device (805) is further arranged above the detection table (801) and is used for guiding the screw from the stable conveying device to the detection table (801) while maintaining the stability of the screw, the screw guide device (805) is located above the conveying part and has a gap between the conveying part, the thickness of the gap corresponds to the size of the screw nut, and after the screw nut is clamped by the screw guide device (805), the screw is separated from the conveying part through rotation and pushing, so as to enter the detection table (801).

2. The stable delivery device for a screw of claim 1, wherein: The magnetic device is arranged on one side of the receiving end (101) of the conveying part, the driven device is arranged on the receiving end (101), and the driving device is arranged on the feeding end (102).

3. A stable delivery device for screws as claimed in claim 2, characterized in that: The conveying part is a belt (1), and a supporting plate (6) is further arranged below the belt (1), the supporting plate (6) is used for supporting the belt (1), the belt (1) is in a stable state and moves along the supporting plate (6), a magnetic device is fixedly arranged between the supporting plate (6) and the belt (1), the supporting plate (6) is provided with a groove (601), the size of the groove (601) corresponds to the size of the magnetic device, the magnetic device is arranged on the surface of the supporting plate (6) to form a plane, the thickness of the belt (1) is 0.02-0.8 mm, and the magnetic device is a soft magnetic strip (5), the width of the soft magnetic strip (5) is smaller than the width of the conveying part.

4. The stable delivery device for a screw of claim 3, wherein: The soft magnetic strip (5) is fixed in the groove (601) of the supporting plate (6), two constraint strips (602) are further arranged on the groove (601), the soft magnetic strip (5) is in a reverse T-shaped structure, the constraint strips (602) are pressed on both sides of the soft magnetic strip (5), and the soft magnetic strip (5) is fixed through the screws arranged on the constraint strips (602).

5. A stable delivery device for a screw as defined in claim 4, wherein: The soft magnetic strip (5) is provided with an acute-angle inclined part towards the feeding end (102), the demagnetization structure (103) is formed by the acute-angle inclined part, the magnetic field distance is increased, the mass of the magnetic strip is reduced, and the purpose of reducing the magnetic field strength is achieved.

6. The stable delivery device for a screw of claim 2, wherein: The demagnetization structure (103) is a wedge-shaped acute-angle triangular block, the triangular block is arranged between the belt (1) and the soft magnetic strip (5), the smallest angle of the triangular block is inserted between the belt (1) and the soft magnetic strip (5), and the triangular block faces the material receiving end (101), the bottom edge of the triangular block faces the feeding end (102), the distance between the soft magnetic strip (5) and the belt (1) gradually increases towards the feeding end (102), and the purpose of reducing the magnetic field strength is achieved.

7. Inspection apparatus using the stable conveying device for screws according to any one of claims 1 to 6, characterized in that: The stable conveying device, the vibrating feeding device (7) and the detection device (8) are arranged, the vibrating feeding device (7) is arranged on the side of the material receiving end (101), and the screw is fed to the stable conveying device in a vibrating mode.

8. The detection device of claim 7, wherein: The detection device (8) further comprises a support frame (802) supporting a detection table (801) and a camera (803) arranged on the periphery of the detection table (801), and the camera (803) is used for video detection of the screw.

9. The detection device of claim 8, wherein: The detection table (801) is a transparent circular structure, a lower driving motor (804) is arranged in the middle of the support frame (802), the detection table (801) is driven to rotate, the rotating direction of the detection table (801) is consistent with the moving direction of the conveying part, part of the arc surface of the detection table (801) is arranged between the driving device and the driven device of the stable conveying device, and is close to the end of the feeding end (102), the arc surface position is below the conveying part and in contact with the lower surface of the conveying part.

10. The detection device of claim 9, wherein: The screw guide device (805) is disc-shaped, and a connecting column (8051) is arranged in the middle of the disc; an upper driving motor (806) is further arranged above the connecting column (8051), and the connecting column (8051) is connected with the upper driving motor (806), so that the disc rotates, and the rotating direction is matched with the moving direction of the detection table (801) and the conveying part, thereby realizing the stable purpose of the screw; the part of the conveying part close to the feeding end (102) is attached to the edge of the detection table (801) and moves, and the demagnetization structure (103) is close to the detection table (801), so that the magnetic force gradually weakens when the screw is conveyed to the detection table (801) through the conveying part.

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