Brass nut detecting and packaging all-in-one machine

Abstract

The invention relates to the technical field of nut detecting and packaging, and provides a brass nut detecting and packaging all-in-one machine which comprises a feeding machine and a feeding channel, the feeding channel is provided with an eddy current sensor, and the side, away from the feeding machine, of the eddy current sensor is provided with a first screening structure. The first screening structure comprises a first swing rod and a first driver used for driving the first swing rod to swing, the first swing rod is located on the edge of the feeding channel, one end of the first swing rod is rotationally connected with the feeding channel, the first driver is connected with the first swing rod, and a first screening opening is formed in the opposite side of the first swing rod. The first screening opening is located in the edge of the feeding channel and provided with a first screening channel, the first screening channel extends in the direction away from the feeding channel, a screening box is arranged at the end, away from the feeding channel, of the first screening channel, and a packaging device is arranged at the tail end of the feeding device. According to the technical scheme, the problem that the material uniformity and internal defects of the nut cannot be detected in the prior art is solved.

Description

Technical Field

[0001] The invention relates to the technical field of nut detection and packaging, and in particular to a brass nut detection and packaging integrated machine. Background Art

[0002] As an important component in mechanical connection, brass nuts are widely used in situations that require high corrosion resistance or conductivity, such as electronic equipment, ship equipment and tap water projects, due to their excellent corrosion resistance, conductivity and high wear resistance. Brass nuts are made of an alloy of copper and zinc. Compared with ordinary steel or iron nuts, they have better toughness, but lower hardness and are not suitable for use in extremely high-strength application scenarios. In addition, the performance stability of brass nuts in high-temperature environments is also better than that of ordinary nuts.

[0003] At present, most of the equipment used for nut inspection on the market is designed for ordinary nuts. Usually, a camera is used to check the appearance of the nut to identify its size, shape and surface defects (such as scratches, cracks, etc.). Although this method can effectively detect the appearance quality of the nut, it has a significant disadvantage: it cannot detect the material uniformity and internal defects of the nut. The uneven material of the brass nut or the hidden defects inside will cause the strength of the nut to decrease significantly. In practical applications, such nuts may fail when subjected to mechanical stress or environmental corrosion, resulting in equipment damage or safety accidents. In addition, brass nuts with uneven materials may suffer fatigue fractures or accelerated wear during long-term use, significantly shortening their service life. Summary of the invention

[0004] The invention provides a brass nut detection and packaging integrated machine capable of simultaneously performing nut detection and packaging.

[0005] The technical solution of the present invention is as follows: A brass nut detection and packaging integrated machine comprises a feeder and a feeding channel, wherein the feeding channel is connected to a material outlet of the feeder, the feeding channel is provided with an eddy current sensor, the eddy current sensor is located on the upper side of the feeding channel, the eddy current sensor is perpendicular to the feeding channel and fixedly connected to the feeding channel, a first screening structure is provided on the side of the eddy current sensor away from the feeder, the first screening structure comprises a first swinging rod and a first driver for driving the first swinging rod to swing, the first swinging rod is located at the edge of the feeding channel, one end of the first swinging rod is rotatably connected to the feeding channel, the first driver is connected to the first swinging rod, a first screening port is provided on the side of the feeding channel opposite to the first swinging rod, the first screening port is located at the edge of the feeding channel, the first screening port is provided with a first screening channel, the first screening channel extends in a direction away from the feeding channel, a screening box is provided at one end of the first screening channel away from the feeding channel, and a packaging device is provided at the end of the feeding device.

[0006] Furthermore, a magnetic fluid detection device for performing surface defect detection on nuts is provided on the side of the first swing arm away from the eddy current sensor, and one end of the magnetic fluid detection device is connected to the feeding channel and the other end is connected to the packaging device.

[0007] Furthermore, the magnetic fluid detection device includes a conveyor belt, a detection device located on the upper side of the conveyor belt, a magnetic fluid storage box located on the lower side of the conveyor belt, a support frame, and a second screening structure. The conveyor belt is located on the support frame, and the two ends of the conveyor belt are respectively connected to the feeding channel and the packaging device. The conveyor belt adopts a plastic mesh belt. A water pump is provided on one side of the magnetic fluid storage box. The water inlet of the water pump is provided with a water inlet pipe. The water inlet pipe extends into and into the magnetic fluid storage box. The water outlet of the water pump is provided with a water outlet pipe. The water outlet pipe extends to the upper side of the conveyor belt. The water outlet of the water outlet pipe is located on the side of the detection device facing the eddy current sensor and towards the middle of the conveyor belt. A recovery box is provided on the side of the magnetic fluid storage box facing the conveyor belt. The recovery box extends from one end of the conveyor belt to the other end of the conveyor belt. A reflux groove is provided in the middle of the recovery box. The reflux groove is connected to the magnetic fluid storage box, and both sides of the recovery box are inclined toward the reflux groove.

[0008] Furthermore, the detection device includes a first electromagnetic coil, an imaging device, and a cleaning structure. Baffles are provided on both sides of the conveyor belt, the baffles are fixedly connected to the support frame, the water outlet of the water outlet pipe is embedded in the baffles, the first electromagnetic coil is located on the side of the water outlet of the water outlet pipe away from the eddy current sensor, the first electromagnetic coil is fixedly connected to the baffle, the first electromagnetic coil faces the conveyor belt, the imaging device is located on the side of the first electromagnetic coil away from the water outlet of the water outlet pipe, the imaging device includes a top camera and a side camera, the top camera is located on the upper side of the conveyor belt, the top camera is fixedly connected to the baffle, the side camera is embedded in the baffle, the top camera and the side camera are both facing the middle of the conveyor belt, and the cleaning structure is located on the side of the imaging device away from the first electromagnetic coil.

[0009] Furthermore, the cleaning structure includes a reverse electromagnetic coil, a plurality of air ducts, and a fan that provides airflow to the air duct, the reverse electromagnetic coil is located on the side of the imaging device away from the first electromagnetic coil, the reverse electromagnetic coil faces the conveyor belt, the reverse electromagnetic coil is fixedly connected to the baffle, the air duct is located on the side of the reverse electromagnetic coil away from the imaging device, a plurality of the air ducts are linearly arranged along the conveyor belt, the air duct is fixedly connected to the baffle, the air outlet of the air duct faces the conveyor belt, the fan is located on the side of the baffle and fixedly connected to the baffle, and the air outlet of the fan is connected to a plurality of air ducts.

[0010] Furthermore, the second screening structure is the same as the first screening structure, the second screening structure is fixedly connected to the baffle, a second screening port is provided on the opposite side of the second screening structure, the second screening port is located on the baffle away from the second screening structure, the second screening port is connected to a second screening channel, and the second screening channel extends toward the screening box and into the screening box.

[0011] Furthermore, the packaging structure includes a packaging channel and a roller conveyor. The packaging channel is connected to the feeding channel. The packaging channel extends toward the roller conveyor and extends to the upper side of the roller conveyor. A number of packaging boxes are arranged on the roller conveyor. The packaging channel is provided with a metering device and an electric push rod. The electric push rod is close to one end of the packaging channel away from the feeding channel, and the metering device is close to the electric push rod.

[0012] Furthermore, the metering device comprises a receiver and a transmitter, wherein the receiver and the transmitter are respectively fixed on two sides of the packaging channel, the receiver faces the transmitter, and the transmitter faces the receiver.

[0013] The working principle and beneficial effects of the present invention are: 1. The present invention detects the material uniformity and internal defects of brass nuts through eddy current sensors. The eddy current sensors can detect the material uniformity and internal defects of brass nuts by sensing the conductivity changes of the nuts. Since brass has a strong conductivity, the eddy current sensor can keenly detect any conductivity changes caused by material unevenness or internal defects, thereby identifying potential quality problems. At the same time, the eddy current sensor can detect the conductivity of the brass nut. Materials with high conductivity will produce stronger eddy currents, which will more significantly affect the impedance or inductance changes of the sensor. Therefore, by calibrating the sensor and comparing the measurement signals, the conductivity of the brass nut can be evaluated. For brass nuts that need to be used in conductive occasions, conductivity is an important detection indicator. The present invention can simultaneously detect the material uniformity, internal defects, and conductivity of the brass nut through the eddy current sensor, reduce the detection steps, improve the detection efficiency, and reduce the equipment cost, solving the problem that the nut material uniformity and internal defects cannot be detected in the prior art.

[0014] 2. The present invention combines the first screening structure with the eddy current sensor so that the system can automatically remove unqualified nuts detected, ensuring that only high-quality nuts enter the packaging process. This automated screening and separation process greatly reduces human errors and improves the efficiency of the production line.

[0015] 3. The present invention integrates detection, screening and packaging into an all-in-one machine. The system can realize full automation from detection to finished product packaging, which not only improves production efficiency, but also ensures the consistency of product quality, and further solves the limitations of traditional detection technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0017] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a top view of the present invention; Figure 3 It is a right side view of the present invention; Figure 4 It is a left side view of the present invention; Figure 5 for Figure 2 Enlarged view of point A.

[0018] In the figure: 1. feeder; 2. feeding channel; 3. eddy current sensor; 4. first electromagnetic coil; 5. magnetic fluid storage box; 6. imaging device; 7. reverse electromagnetic coil; 8. air duct; 9. screening box; 31. first swing arm; 32. first driver; 33. first screening port; 34. first screening channel; 51. recovery box; 52. water pump; 53. water inlet pipe; 54. water outlet pipe; 55. reflux slot; 61. top camera; 62. side camera; 81. fan; 100. packaging channel; 101. electric push rod; 102. transmitter; 103. receiver; 110. roller conveyor; 120. packaging box; 200. conveyor belt; 210. baffle; 211. second screening structure; 212. second screening port; 213. second screening channel; 300. support frame. DETAILED DESCRIPTION

[0019] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] like Figure 1~Figure 5As shown, this embodiment proposes a brass nut detection and packaging integrated machine, including a feeder 1 and a feeding channel 2, the feeding channel 2 is connected to the discharge port of the feeder 1, the feeding channel 2 is provided with an eddy current sensor 3, the eddy current sensor 3 is located on the upper side of the feeding channel 2, the eddy current sensor 3 is perpendicular to the feeding channel 2 and is fixedly connected to the feeding channel 2, a first screening structure is provided on the side of the eddy current sensor 3 away from the feeder 1, the first screening structure includes a first swinging rod 31, a first driver 32 for driving the first swinging rod 31 to swing, and a first The swing arm 31 is located at the edge of the feeding channel 2, one end of the first swing arm 31 is rotatably connected to the feeding channel 2, the first driver 32 is connected to the first swing arm 31, and a first screening port 33 is arranged on the side of the feeding channel 2 opposite to the first swing arm 31. The first screening port 33 is located at the edge of the feeding channel 2, the first screening port 33 is arranged with a first screening channel 34, the first screening channel 34 extends in a direction away from the feeding channel 2, a screening box 9 is arranged at one end of the first screening channel 34 away from the feeding channel 2, and a packaging device is arranged at the end of the feeding device.

[0021] The feeder 1 is responsible for transporting the brass nuts from the storage position to the detection and screening area. The feeding channel 2 serves as a channel connecting the feeder 1 and the subsequent detection structure to ensure that the nuts enter the detection area in a stable and continuous manner. The combination of the feeder 1 and the feeding channel 2 can realize the automatic transportation of the brass nuts, reduce manual intervention, and improve production efficiency. The eddy current sensor 3 is used to detect the material uniformity and internal defects of the brass nuts. The eddy current sensor 3 can perform non-contact detection on the brass nuts when they pass through the feeding channel 2. It can not only identify the material unevenness and internal defects, but also detect the conductivity of the brass nuts, so that one sensor can perform multiple detections, which can reduce the detection steps, reduce the equipment cost, and improve the detection efficiency. A lifting structure can be set at the connection between the eddy current sensor 3 and the feeding channel 2, so that the eddy current sensor 3 can adapt to nuts of different heights. The lifting structure can be lifted by a screw rod or manually lifted. The lifting structure is a prior art, and the specific embodiment will not be repeated. The first swing rod 31 is used to change the front route of the brass nut by rotating, and remove the unqualified brass nut. Specifically, when the eddy current sensor 3 detects that the nut has material uniformity or internal defects, the first driver 32 will drive the first swing rod 31 to rotate, and the first swing rod 31 rotates to apply force to the unqualified nut in the direction of the first screening port 33 or guide the unqualified nut to move to the first screening port 33, so that the unqualified nut is removed from the feeding channel 2, enters the first screening port 33 and the first screening channel 34, and finally falls into the screening box 9. This structure can automatically remove the detected unqualified nuts from the production line, avoid bad products from entering the next link, and thus improve the overall quality of the product. The first driver 32 can be an electric motor, which is a prior art. Specifically, this embodiment will not be repeated. The motor can be directly connected to one end of the first swing rod 31 or drive the first swing rod 31 to rotate through a gear. The first screening port 33 is the channel where the nut enters after being screened out, and the first screening channel 34 guides the unqualified nuts into the screening box 9. The screening box 9 is used to collect the rejected unqualified brass nuts for subsequent processing or rework. The packaging device is located at the end of the feeding device and is responsible for automatically packaging the brass nuts that have been tested and screened to be qualified.

[0022] In this embodiment, a magnetic fluid detection device for detecting surface defects of nuts is arranged on the side of the first swing arm 31 away from the eddy current sensor 3. One end of the magnetic fluid detection device is connected to the feeding channel 2 and the other end is connected to the packaging device. The magnetic fluid detection device includes a conveyor belt 200, a detection device located on the upper side of the conveyor belt 200, a magnetic fluid storage box 5 located on the lower side of the conveyor belt 200, a support frame 300, and a second screening structure 211. The conveyor belt 200 is located on the support frame 300. The two ends of the conveyor belt 200 are respectively connected to the feeding channel 2 and the packaging device. The conveyor belt 200 adopts a plastic mesh belt. A water pump 52 is arranged on one side of the magnetic fluid storage box 5. The water pump 52 A water inlet pipe 53 is arranged at the water inlet, and the water inlet pipe 53 extends into the magnetic fluid storage box 5 and extends into the magnetic fluid storage box 5. A water outlet pipe 54 is arranged at the water outlet of the water pump 52, and the water outlet pipe 54 extends to the upper side of the conveyor belt 200. The water outlet of the water outlet pipe 54 is located on the side of the detection device facing the eddy current sensor 3 and facing the middle of the conveyor belt 200. A recovery box 51 is arranged on the side of the magnetic fluid storage box 5 facing the conveyor belt 200, and the recovery box 51 extends from one end of the conveyor belt 200 to the other end of the conveyor belt 200. A reflux groove 55 is arranged in the middle of the recovery box 51, and the reflux groove 55 is connected to the magnetic fluid storage box 5, and both sides of the recovery box 51 are inclined toward the reflux groove 55.

[0023] The magnetic fluid detection device is used to detect surface defects of nuts. The conveyor belt 200 transports the nuts from the feeding channel 2 to the packaging device. During this period, the detection device located above the conveyor belt 200 cooperates with the magnetic fluid storage box 5 to identify defects on the surface of the nuts through the characteristics of the magnetic fluid. The conveyor belt 200 is responsible for transporting the nuts from the feeding channel 2 to the packaging device and passing through the magnetic fluid detection device. The plastic mesh belt is designed to allow the magnetic fluid to flow back into the storage box through the mesh belt. The use of plastic mesh belts is both light and corrosion-resistant, which can effectively reduce wear, and the structural design of the mesh belt allows the magnetic fluid to flow back smoothly, avoiding the accumulation and waste of magnetic fluid during the transportation process. The mesh belt made of plastic material will not react with the magnetic field when passing through the electromagnetic coil, and will not affect the return of the magnetic fluid. Rollers should be arranged at both ends of the conveyor belt 200, and the conveyor belt 200 is sleeved on the rollers, and the rollers are rotatably connected with the support frame 300. The rollers are provided with motors, and the motors are used to drive the rollers to rotate, and then the conveyor belt 200 is driven by the rollers to move, so as to realize the conveying of the nuts. The conveyor belt 200, the rollers, and the motors are all prior art, and are specifically not described in detail in this embodiment. The magnetic fluid storage box 5 is used to store the magnetic fluid for detection, and the water pump 52 is responsible for extracting the magnetic fluid from the storage box and delivering it to the detection device above the conveyor belt 200 through the outlet pipe 54. The cooperation of the water pump 52 and the magnetic fluid storage box 5 ensures the recycling of the magnetic fluid, improves the working efficiency of the detection device, and reduces the waste of the magnetic fluid. At the same time, this circulation design also avoids the contamination of the conveyor belt 200 by the magnetic fluid during the detection process, and maintains the cleanliness of the production environment. The outlet pipe 54 delivers the magnetic fluid to the position above the conveyor belt 200, close to the detection device, and sprays the magnetic fluid to the nuts, so that the magnetic fluid can be evenly covered on the surface of the nuts for detection. The detection device applies a magnetic field to the nut, so that the magnetic fluid is adsorbed on the surface defective part of the nut, and the surface defect is identified by observing the distribution of the magnetic fluid on the surface of the nut. The recovery box 51 extends from one end of the conveyor belt 200 to the other end, and is responsible for collecting excess magnetic fluid. The design of the reflux groove 55 ensures that the magnetic fluid can smoothly flow back into the magnetic fluid storage box 5 for recycling. The inclined two sides can guide the magnetic fluid to move toward the reflux groove 55, thereby accelerating the reflux of the magnetic fluid.

[0024] In this embodiment, the detection device includes a first electromagnetic coil 4, an imaging device 6, and a cleaning structure. Baffles 210 are arranged on both sides of the conveyor belt 200, the baffles 210 are fixedly connected to the support frame 300, the water outlet of the water outlet pipe 54 is embedded in the baffle 210, the first electromagnetic coil 4 is located on the side of the water outlet of the water outlet pipe 54 away from the eddy current sensor 3, the first electromagnetic coil 4 is fixedly connected to the baffle 210, the first electromagnetic coil 4 faces the conveyor belt 200, the imaging device 6 is located on the side of the first electromagnetic coil 4 away from the water outlet of the water outlet pipe 54, the imaging device 6 includes a top camera 61 and a side camera 62, the top camera 61 is located on the upper side of the conveyor belt 200, the top camera 61 is fixedly connected to the baffle 210, the side camera 62 is embedded in the baffle 210, the top camera 61 and the side camera 62 are both facing the middle of the conveyor belt 200, and the cleaning structure is located on the side of the imaging device 6 away from the first electromagnetic coil 4.

[0025] The first electromagnetic coil 4 is used to further enhance the response effect of the magnetic fluid through electromagnetic induction after the nut is detected by the magnetic fluid, so as to better detect the surface defects of the nut. By adding an electromagnetic coil, the magnetic fluid can form a more obvious aggregation effect on the surface of the nut, making the surface defects clearer and improving the detection precision and accuracy of the image device 6. The image device 6 is used to visually detect the surface of the nut. The top camera 61 is used to capture the overall image of the nut from above, and the side camera 62 is used to capture the details of the side of the nut. They work together to provide a multi-angle detection view of the nut. Multi-angle image capture can more comprehensively detect the defects on the surface of the nut to ensure that no problems that may affect the quality of the nut are missed. At the same time, this configuration can also reduce the occurrence of false detection and improve the reliability of detection. The top camera 61 and the side camera 62 can use anti-interference cameras. Since they are close to the electromagnetic coil, the magnetic field generated by the electromagnetic coil will affect the camera shooting. The use of anti-interference cameras can reduce the interference of the electromagnetic coil on the camera and improve the image quality. The baffle 210 is used to provide fixed support and limit the trajectory of the nut moving on the conveyor belt 200 to ensure that the position of the nut is stable during the detection process. The design of the baffle 210 prevents the nut from deflecting during the conveying process, thereby ensuring the working accuracy of the detection device (such as the electromagnetic coil and the imaging device 6). In addition, the baffle 210 also provides a stable structural support for the installation and connection of the device.

[0026] In this embodiment, the cleaning structure includes a reverse electromagnetic coil 7, a plurality of air ducts 8, and a fan 81 for providing airflow to the air duct 8. The reverse electromagnetic coil 7 is located on the side of the imaging device 6 away from the first electromagnetic coil 4, the reverse electromagnetic coil 7 faces the conveyor belt 200, the reverse electromagnetic coil 7 is fixedly connected to the baffle 210, the air duct 8 is located on the side of the reverse electromagnetic coil 7 away from the imaging device 6, the plurality of air ducts 8 are linearly arranged along the conveyor belt 200, the air duct 8 is fixedly connected to the baffle 210, the air outlet of the air duct 8 faces the conveyor belt 200, the fan 81 is located on the side of the baffle 210 and is fixedly connected to the baffle 210, and the air outlet of the fan 81 is connected to the plurality of air ducts 8.

[0027] The cleaning structure is used to remove residual magnetic fluid or other impurities after the nut is detected by the imaging device 6. The reverse electromagnetic coil 7 is used for demagnetization to remove the aggregation effect of the magnetic fluid attached to the surface of the nut. The air duct 8 blows the residual magnetic fluid away from the surface of the nut through the airflow, so that the nut can enter the next process cleanly. This cleaning design can effectively remove the residual magnetic fluid on the surface of the nut to avoid unnecessary contamination or adhesion during packaging or subsequent processing. At the same time, through double cleaning of demagnetization and wind blowing, it is ensured that the surface of the nut is clean before entering the packaging stage, which is conducive to ensuring the quality of the final product. The fan 81 is used to provide airflow for the air duct 8. The fan 81 is a prior art, and the specific details will not be repeated in this embodiment.

[0028] In this embodiment, the second screening structure 211 is the same as the first screening structure. The second screening structure 211 is fixedly connected to the baffle 210. A second screening port 212 is arranged on the opposite side of the second screening structure 211. The second screening port 212 is located on the baffle 210 away from the second screening structure 211. The second screening port 212 is connected to a second screening channel 213. The second screening channel 213 extends toward the screening box 9 and extends into the screening box 9. The second screening structure 211 is used to further screen the nuts. It is fixedly connected to the baffle 210 to ensure the stability of the nuts during the screening process. A second screening port 212 is arranged on the opposite side of the second screening structure 211. Nuts that are unqualified or require special treatment are introduced into the second screening channel 213 through the second screening port 212. Through two independent screening structures, the system can more accurately perform multi-stage screening on the nuts to avoid mixing qualified and unqualified products. The second screening channel 213 is connected to the second screening port 212 and extends into the screening box 9. It is used to introduce the nuts screened by the second screening structure 211 into the screening box 9.

[0029] In this embodiment, the packaging structure includes a packaging channel 100 and a roller conveyor 110. The packaging channel 100 is connected to the end of the conveyor belt 200 away from the feeding channel 2. The packaging channel 100 extends toward the roller conveyor 110 and extends to the upper side of the roller conveyor 110. A plurality of packaging boxes 120 are arranged on the roller conveyor 110. The packaging channel 100 is provided with a metering device and an electric push rod 101. The electric push rod 101 is close to the end of the packaging channel 100 away from the conveyor belt 200, and the metering device is close to the electric push rod 101. The packaging channel 100 is used to convey the nuts that have passed the screening to the packaging box 120 on the roller conveyor 110. It connects the conveyor belt 200 and the roller conveyor 110 to form a channel for the nuts to enter the packaging link. The roller conveyor 110 is used to transport the packaging box 120 to the designated position in an orderly manner to facilitate subsequent packaging operations. The roller conveyor 110 is a prior art, and the specific details will not be repeated in this embodiment. The combination of the packaging channel 100 and the roller conveyor 110 realizes a seamless connection from screening to packaging, ensuring the stability and smoothness of the nuts during the packaging process. The design of the roller conveyor 110 enables the packaging box 120 to move automatically, reducing manual operations and improving the degree of automation and production efficiency. The metering device is used to accurately measure the number of nuts in the packaging channel 100 to ensure that the number of nuts loaded in each packaging box 120 meets the requirements. The electric push rod 101 is used to limit the movement of the nuts. After the number of nuts in the packaging box 120 reaches the set value, the electric push rod 101 is pushed to limit the subsequent nuts, thereby facilitating the replacement of the packaging box 120.

[0030] In this embodiment, the metering device includes a receiver 103 and a transmitter 102. The receiver 103 and the transmitter 102 are respectively fixed on both sides of the packaging channel 100, the receiver 103 faces the transmitter 102, and the transmitter 102 faces the receiver 103. The metering device is a through-beam photoelectric sensor, the receiver 103 is the receiving end of the through-beam photoelectric sensor, and the transmitter 102 is the transmitting end of the through-beam photoelectric sensor. The transmitter 102 and the receiver 103 need to be precisely aligned to ensure that the light beam can stably pass through the packaging channel 100. The working principle is that the transmitting end of the through-beam photoelectric sensor installed on one side of the packaging channel 100 emits infrared rays or visible light, and the infrared rays or visible light are received by the receiving end of the through-beam photoelectric sensor installed on the other side of the packaging channel 100. When a nut passes by, the light beam will be temporarily blocked. When the receiving end cannot receive infrared rays or visible light, the counter will record once, and the system will accumulate the number of detections to determine the total number.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A brass nut detection and packaging integrated machine, comprising a feeder (1) and a feed channel (2), wherein the feed channel (2) is connected to a discharge port of the feeder (1), characterized in that: The feeding channel (2) is provided with an eddy current sensor (3), the eddy current sensor (3) is located on the upper side of the feeding channel (2), the eddy current sensor (3) is perpendicular to the feeding channel (2) and is fixedly connected to the feeding channel (2), and a first screening structure is provided on the side of the eddy current sensor (3) facing away from the feeder (1), the first screening structure comprises a first swinging rod (31) and a first driver (32) for driving the first swinging rod (31) to swing, the first swinging rod (31) is located at the edge of the feeding channel (2), one end of the first swinging rod (31) is in contact with the feeding channel (2), and the first swinging rod (31) is connected to the feeding channel (2). The feeding channel (2) is rotatably connected, the first driver (32) is connected to the first swing rod (31), a first screening port (33) is provided on a side of the feeding channel (2) opposite to the first swing rod (31), the first screening port (33) is located at the edge of the feeding channel (2), the first screening port (33) is provided with a first screening channel (34), the first screening channel (34) extends in a direction away from the feeding channel (2), a screening box (9) is provided at one end of the first screening channel (34) away from the feeding channel (2), and a packaging device is provided at the end of the feeding device.

2. The brass nut detection and packaging integrated machine according to claim 1, characterized in that: A magnetic fluid detection device for detecting surface defects of nuts is provided on the side of the first swinging rod (31) facing away from the eddy current sensor (3); one end of the magnetic fluid detection device is connected to the feeding channel (2), and the other end of the magnetic fluid detection device is connected to the packaging device.

3. The brass nut detection and packaging integrated machine according to claim 2, characterized in that: The magnetic fluid detection device comprises a conveyor belt (200), a detection device located on the upper side of the conveyor belt (200), a magnetic fluid storage box (5) located on the lower side of the conveyor belt (200), a support frame (300), and a second screening structure (211). The conveyor belt (200) is located on the support frame (300). Both ends of the conveyor belt (200) are respectively connected to a feeding channel (2) and a packaging device. The conveyor belt (200) is made of a plastic mesh belt. A water pump (52) is provided on one side of the magnetic fluid storage box (5). A water inlet of the water pump (52) is provided with a water inlet pipe (53). The water inlet pipe (53) extends into the magnetic fluid storage box (5) and extends into the magnetic fluid storage box (5). The water outlet of the water pump (52) is provided with a water outlet pipe (54), the water outlet pipe (54) extends toward the upper side of the conveyor belt (200), the water outlet of the water outlet pipe (54) is located on the side of the detection device facing the eddy current sensor (3) and facing the middle of the conveyor belt (200), the magnetic fluid storage box (5) is provided with a recovery box (51) on the side facing the conveyor belt (200), the recovery box (51) extends from one end of the conveyor belt (200) to the other end of the conveyor belt (200), the recovery box (51) is provided with a reflux groove (55) in the middle, the reflux groove (55) is connected to the magnetic fluid storage box (5), and both sides of the recovery box (51) are inclined toward the reflux groove (55).

4. The brass nut detection and packaging integrated machine according to claim 3, characterized in that: The detection device comprises a first electromagnetic coil (4), an imaging device (6), and a cleaning structure; baffles (210) are provided on both sides of the conveyor belt (200); the baffles (210) are fixedly connected to the support frame (300); the water outlet of the water outlet pipe (54) is embedded in the baffles (210); the first electromagnetic coil (4) is located on a side of the water outlet of the water outlet pipe (54) away from the eddy current sensor (3); the first electromagnetic coil (4) is fixedly connected to the baffles (210); the first electromagnetic coil (4) faces the conveyor belt (200); the imaging device (6) Located on a side of the first electromagnetic coil (4) away from a water outlet of the water outlet pipe (54), the imaging device (6) comprises a top camera (61) and a side camera (62), the top camera (61) being located on the upper side of the conveyor belt (200), the top camera (61) being fixedly connected to the baffle (210), the side camera (62) being embedded in the baffle (210), the top camera (61) and the side camera (62) both facing the middle of the conveyor belt (200), and the cleaning structure being located on a side of the imaging device (6) away from the first electromagnetic coil (4).

5. The brass nut detection and packaging integrated machine according to claim 4, characterized in that: The cleaning structure comprises a reverse electromagnetic coil (7), a plurality of air ducts (8), and a fan (81) for providing airflow to the air duct (8); the reverse electromagnetic coil (7) is located on a side of the image device (6) away from the first electromagnetic coil (4); the reverse electromagnetic coil (7) faces the conveyor belt (200); the reverse electromagnetic coil (7) is fixedly connected to the baffle (210); the air duct (8) is located on a side of the reverse electromagnetic coil (7) away from the image device (6); a plurality of the air ducts (8) are linearly arranged along the conveyor belt (200); the air duct (8) is fixedly connected to the baffle (210); an air outlet of the air duct (8) faces the conveyor belt (200); the fan (81) is located on a side of the baffle (210) and is fixedly connected to the baffle (210); and an air outlet of the fan (81) is connected to the plurality of air ducts (8).

6. The brass nut detection and packaging integrated machine according to claim 3, characterized in that: The second screening structure (211) is identical to the first screening structure. The second screening structure (211) is fixedly connected to the baffle plate (210). A second screening port (212) is provided on the opposite side of the second screening structure (211). The second screening port (212) is located on the baffle plate (210) away from the second screening structure (211). The second screening port (212) is connected to a second screening channel (213). The second screening channel (213) extends toward the screening box (9) and extends into the screening box (9).

7. The brass nut detection and packaging integrated machine according to claim 1, characterized in that: The packaging structure comprises a packaging channel (100) and a roller conveyor (110); the packaging channel (100) is connected to a feeding channel (2); the packaging channel (100) extends toward the roller conveyor (110) and extends to the upper side of the roller conveyor (110); a plurality of packaging boxes (120) are arranged on the roller conveyor (110); the packaging channel (100) is provided with a metering device and an electric push rod (101); the electric push rod (101) is located at one end of the packaging channel (100) away from the feeding channel (2); and the metering device is located on a side of the electric push rod (101) facing the feeding channel (2).

8. The brass nut detection and packaging integrated machine according to claim 7, characterized in that: The metering device comprises a receiver (103) and a transmitter (102); the receiver (103) and the transmitter (102) are respectively fixed on two sides of a packaging channel (100); the receiver (103) faces the transmitter (102), and the transmitter (102) faces the receiver (103).

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