Automatic vibration feeding and discharging system for nut tapping and milling equipment

Abstract

The application discloses a nut tapping and milling equipment automatic vibration feeding and discharging system and relates to the technical field of machining equipment. The vibration feeding and discharging system comprises a vibration disc and a marking machine. A spiral feeding channel is formed in the vibration disc body. A plurality of screening mechanisms, such as height limiting plates, width limiting plates, guide plates and screening plates, are integrated in the channel to realize the screening and reflux circulation of nuts in a single layer, a single row and a correct posture. A discharging guide rail is connected to the discharging end of the vibration disc. The guide rail is divided into a blanking section and a marking section along the conveying direction. The axis of the marking execution end of the marking machine is perpendicular to the conveying direction of the nuts. The accurate positioning of the nut marking posture is realized through an adsorption assembly. The equipment realizes the automatic posture screening, directional conveying and accurate marking of nuts, improves the feeding efficiency and the marking qualified rate, does not need manual intervention and is suitable for large-scale production.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of processing equipment, in particular to a nut tapping and milling equipment automatic vibration feeding and discharging system. BACKGROUND

[0002] The nylon locking nut is widely used in vibration working condition scenes such as automobiles, engineering machinery and electrical equipment due to its anti-loosening performance and assembly convenience, and its processing flow needs to form an internal thread through tapping, and posture calibration and marking before the process is a key pre-link to ensure processing accuracy and product traceability. The material of the nylon locking nut is metal, and the nut is embedded with a nylon ring after processing, so it is called a nylon locking nut.

[0003] In the current tapping and milling production line of the nylon locking nut, the ring part and the hexagonal head part arranged at the top of the nylon locking nut form a "stepped" structure, and the center of gravity is offset compared with the ordinary hexagonal nut, which causes obvious limitations in the posture adjustment means of the existing feeding equipment. Figure 1 According to the prior art, the traditional vibration feeding equipment only relies on a simple blocking plate or a straight channel for conveying, and cannot perform directional posture calibration on the hexagonal head part 51 and the ring part 52 of the nylon locking nut, and problems such as nut inversion (the ring part 52 faces downward) and nut tilting (the hexagonal head part 51 is clamped and stuck with the side wall of the conveying channel) often occur, which requires manual stopping and sorting, resulting in a feeding efficiency of 60%-70%, and manual intervention is easy to introduce oil stains or bump damage, affecting the subsequent processing accuracy.

[0004] In the existing equipment, the marking process is often disconnected from the feeding process, and when the nut is conveyed to the marking station through the feeding channel, there is a lack of a special positioning mechanism, and only rough positioning is achieved through the side wall limiting of the channel, which causes the flat end face of the hexagonal head part of the nylon locking nut to be unable to be vertically aligned with the axis of the execution end of the marking device, and problems such as marking deviation, distortion and character blur are easy to occur.

[0005] The existing production line cannot screen the correctness of the posture of the nylon locking nut, or the posture is offset again after screening, and manual calibration is required again, further reducing the degree of automation of the production line.

[0006] In summary, the feeding and discharging link of the existing nylon locking nut tapping and milling equipment lacks an integrated device that can adapt to the composite structure, achieve efficient posture screening, accurate marking positioning and automatic collaborative conveying, resulting in low production line efficiency and high product defect rate, which is difficult to meet the dual demands of precision and efficiency in large-scale production, and targeted technical improvement is urgently needed. SUMMARY

[0007] To solve the above problems, the application provides a nut tapping and milling equipment automatic vibration feeding and discharging system.

[0008] The nut tapping and milling equipment automatic vibration feeding and discharging system is characterized in that it comprises a vibrating disc and a marking machine; the vibrating disc comprises a vibrating disc body and a vibrating drive mechanism, a spiral feeding channel extending spirally along the height direction is formed in the vibrating disc body, and a screening mechanism is arranged in the spiral feeding channel; a discharging guide rail is connected to the discharging end of the vibrating disc body, the discharging guide rail is sequentially divided into a discharging section and a marking section along the material conveying direction, the marking section is arranged horizontally, and the axis of the marking execution end of the marking machine is perpendicular to the material conveying direction of the marking section; and the inner wall of the marking section is further provided with an adsorption assembly for positioning and adsorbing nuts in the marking process.

[0009] By adopting the above technical scheme, the material is initially conveyed from disorder to order by taking the vibrating disc as the core, the nut posture is corrected in advance by the screening mechanism in the spiral feeding channel, and the transition of the discharging section and the positioning of the marking section of the discharging guide rail are combined, and the adsorption assembly and the marking machine are cooperated, so that the problems of posture confusion and poor marking positioning of the traditional feeding equipment can be solved, and qualified materials are provided for subsequent tapping and milling processes.

[0010] Further, the screening mechanism comprises a height limiting plate extending along the length direction of the spiral feeding channel, a height limiting channel is formed between the bottom of the height limiting plate and the bearing surface of the spiral feeding channel, and the vertical height of the height limiting channel matches the axial height of the nut to be conveyed.

[0011] By adopting the above technical scheme, the height limiting channel and the axial height of the nut are accurately matched, the stacked or laterally placed nuts are forcibly intercepted, and the nuts are caused to slide to the bottom of the vibrating disc body for recycling, so that the nuts entering the subsequent link are all in a single layer and a non-laterally placed posture, and channel congestion caused by stacking is avoided.

[0012] Further, the screening mechanism comprises a width limiting plate arranged along the width direction of the spiral feeding channel, a width limiting channel is formed between the width limiting plate and the inner side wall of the spiral feeding channel, and the horizontal width of the width limiting channel matches the maximum radial dimension of the nut to be conveyed.

[0013] By adopting the above technical scheme, the width of the width limiting channel is limited, only a single row of nuts is allowed to pass through the spiral feeding channel, and the mutual extrusion and stagnation problem caused by parallel conveying of multiple rows of nuts is prevented, so that an orderly material conveying environment is provided for subsequent posture screening.

[0014] Further, a first material return channel is arranged on the side of the width limiting plate away from the inner side wall of the spiral feeding channel, the inlet of the first material return channel is adjacent to the width limiting plate, and the outlet of the first material return channel extends to the bottom area of the vibrating disc body, so that the nuts can only pass through in a single row.

[0015] By adopting the above technical scheme, a single-row screening closed loop is constructed, and the excess nuts exceeding the single-row width can be automatically returned to the bottom of the vibrating disc body through the first return channel, without manual sorting, so as to avoid material waste and ensure the order of nut conveying in the feeding channel and improve the degree of automation of the equipment.

[0016] Further, the screening mechanism comprises a guide plate and a screening plate, the guide plate is arranged obliquely along the conveying direction of the spiral feeding channel, and is used for guiding the nuts to the screening plate; a plurality of screening protrusions are arranged on the bearing surface of the screening plate in a spaced manner, each screening protrusion comprises a screening protrusion integrally formed with the screening plate, and an arc-shaped guide surface is arranged at the end of the screening protrusion, and a screening groove is formed between two adjacent screening protrusions, the groove width of the screening groove gradually increases in the direction away from the screening plate, and the minimum groove width matches the minimum radial dimension of the nut to be conveyed.

[0017] By adopting the above technical scheme, the inclined guide of the guide plate is used for realizing directional flow guiding of the nuts, and the arc-shaped guide surface of the screening protrusion and the size design of the gradually changing screening groove are combined, so that the nut posture is screened based on the gravity center difference: the nuts with correct postures can stably pass through because of low gravity center and large outer diameter than the maximum width of the screening groove; and the nuts with incorrect postures can realize accurate posture separation because of high gravity center and easy sliding of the annular part from the screening groove.

[0018] Further, a second return channel is arranged on the side of the screening plate away from the screening groove, the inlet of the second return channel is communicated with the edge of the screening plate, and the outlet extends to the bottom area of the vibrating disc body, and is used for guiding the nuts not passing through the screening groove back to the vibrating disc body.

[0019] By adopting the above technical scheme, the closed loop cycle of posture screening is completed, the nuts with incorrect postures not passing through the screening groove can re-enter the feeding process through the second return channel, and the automation cycle of screening, returning and re-screening can be realized without manual intervention, so as to ensure the consistency of the nut postures entering the subsequent process.

[0020] Further, the inlet end of the feeding section is provided with an inclined baffle, the vertical distance between the bottom end of the inclined baffle and the bearing surface of the feeding section matches the axial height of the nut to be conveyed; the feeding section comprises two oppositely arranged feeding baffles, the two feeding baffles form a feeding channel, the horizontal width of the feeding channel matches the diagonal distance of the hexagonal head of the nut to be conveyed; the top end of the feeding section is provided with a top plate, the vertical distance between the top plate and the bearing surface of the feeding section matches the axial height of the nut to be conveyed;

[0021] By adopting the technical scheme, the inclined baffle can intercept the nut with an incorrect posture with the bottom side up, the width of the blanking channel is designed to allow the nut to rotate slightly to avoid jamming, and the top plate prevents the nut from bouncing off during the conveying process, thereby realizing secondary error prevention and stable conveying of the blanking section, reducing the secondary deviation of the posture, and achieving the technical effects of the present application.

[0022] Further, the marking section includes a marking side baffle and a blocking rod, the adsorption assembly is embedded on one side of the marking side baffle facing the material conveying path, a marking channel is formed between the marking side baffle and the blocking rod, the horizontal width of the marking channel matches the distance between opposite sides of the hexagonal head of the nut to be conveyed, and a hollow groove is enclosed between the blocking rod and the bearing surface of the marking section, the hollow groove is connected with the marking channel, and the vertical height of the hollow groove matches the axial height of the hexagonal head of the nut to be conveyed.

[0023] By adopting the technical scheme, the width limitation of the marking channel can prevent the nut from rotating around its own axis, ensuring that the marking surface faces the fixed direction, the hollow groove can expose the marking surface and limit the up-and-down displacement of the nut, and the adsorption assembly provides stable positioning for the marking process, thereby laying a structural foundation for accurate marking.

[0024] Further, one end of the blocking rod is connected with one of the blanking baffles of the blanking section, a guide arc part is arranged at the connecting end of the blocking rod and the blanking baffle, the bending direction of the guide arc part faces the central axis of the marking channel, a probe slot is formed between the marking side baffle and the other blanking baffle of the blanking section, and an arc-shaped buffer part is arranged on the section of the marking side baffle close to the probe slot and faces the direction of the blocking rod.

[0025] By adopting the technical scheme, the guide arc part can guide the nut to smoothly transition from the blanking section to the marking section, the arc-shaped buffer part can correct the posture through the abutting force when the posture of the nut is inclined, thereby avoiding the jamming problem caused by the sudden change in size at the joint, and improving the smoothness of the material conveying.

[0026] Further, the adsorption assembly includes an electromagnet and a buffer layer wrapped outside the electromagnet, the buffer layer is composed of a non-slip outer layer and a sponge inner layer filled in the non-slip outer layer, and the electromagnet generates an adsorption force after being powered on, so that the nut marking surface is tightly attached to the buffer layer, ensuring that the marking surface is perpendicular to the axis of the execution end of the marking machine, thereby improving the marking precision, the non-slip outer layer can prevent the displacement of the nut during the marking process, and the sponge inner layer can absorb the marking impact force, thereby avoiding damage caused by the rigid contact between the nut and the electromagnet, and the electromagnet can restore its shape after being powered off, without affecting the subsequent pushing of the nut.

[0027] In summary, the present application has at least one of the following beneficial technical effects:

[0028] 1. Through the multi-dimensional screening structure of height-limiting plate, width-limiting plate, guide plate and screening plate, combined with the closed-loop design of the return material channel, the stacked, multi-row and incorrectly oriented nuts can be comprehensively intercepted, so as to ensure that the nuts entering the subsequent process are in the correct posture of single layer, single row and hexagonal head downward, solve the problem of low feeding efficiency of traditional equipment, improve the feeding efficiency, avoid the oil stains and bump damage caused by manual sorting, and ensure the subsequent processing precision.

[0029] 2. Through the size limiting of the marking channel, the positioning and adsorption of the adsorption assembly and the posture correction structure at the joint, the nuts can maintain a stable posture with the marking surface perpendicular to the axis of the marking machine execution end at the marking station, so as to solve the problems of identification deviation, distortion and character blur of traditional equipment.

[0030] 3. The device integrates vibration feeding, posture screening and precise marking, and can complete the whole process processing from disordered materials to qualified materials without manual intervention, reduce manual downtime and labor cost; at the same time, the material recycling is realized through the return material channel, waste is avoided, and the dual demands of precision and efficiency for large-scale production of nylon locking nuts in the fields of automobiles and engineering machinery are met, so as to provide stable material supply for the subsequent tapping and milling processes. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a perspective view of the nylon locking nut, mainly showing its structure;

[0032] Figure 2 is a perspective view of the embodiment, mainly showing its overall structure;

[0033] Figure 3 is a perspective view of another view of the embodiment, mainly showing its overall structure;

[0034] Figure 4 is a partial view of the embodiment, mainly showing the specific structure of the vibration disc body;

[0035] Figure 5 is a partial view of the vibration disc body, mainly showing the width-limiting plate and the height-limiting plate;

[0036] Figure 6 is a partial view of the vibration disc body, mainly showing the screening plate;

[0037] Figure 7 mainly shows the screening groove and the arc-shaped guide surface;

[0038] Figure 8 mainly shows the material falling section, the marking section and the marking machine;

[0039] Figure 9 mainly shows the position relationship between the material falling section and the marking section;

[0040] Figure 10 It is a partial view of the blanking guide rail, mainly showing the specific structure of the blanking section and the marking section;

[0041] Figure 11 It is a partial view of the blanking guide rail, mainly showing the specific structure of the blanking section and the marking section;

[0042] Figure 12 Mainly show the specific structure of the marking side baffle, buffer part and guide arc part;

[0043] Figure 13 It demonstrates the posture of the nylon locking nut in the marking channel;

[0044] Figure 14 Mainly show the position of the adsorption assembly;

[0045] Figure 15 Mainly show the specific structure of the adsorption assembly.

[0046] BRIEF DESCRIPTION OF DRAWINGS 1, vibration disc; 10, vibration disc body; 100, spiral feeding channel; 11, height limiting plate; 111, height limiting channel; 12, width limiting plate; 13, first return channel; 14, guide plate; 15, screening plate; 151, screening protrusion; 152, arc-shaped guide surface; 153, screening groove; 16, second return channel; 17, inclined baffle; 21, blanking section; 211, top plate; 212, blanking baffle; 213, blanking channel; 22, marking section; 221, blocking rod; 222, guide arc part; 223, marking side baffle; 224, buffer part; 225, hollow groove; 226, marking channel; 227, probe slot; 3, adsorption assembly; 31, buffer layer; 32, electromagnet; 4, marking machine; 51, hexagonal head; 52, circular ring part. DETAILED DESCRIPTION

[0047] The application will be described in further detail below with reference to the drawings.

[0048] The technical solutions in the application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments. The components of the application described and shown in the drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the application. Based on the embodiments of the application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the application.

[0049] REFERENCE Figure 2 and Figure 3, Nut tapping and milling equipment automatic vibration feeding and discharging system, realizes automatic posture screening, directional conveying and precise marking of nylon locking nut (hereinafter referred to as nut), provides posture uniformity and clear identification for subsequent tapping and milling process, including vibration disc 1 and marking machine 4.

[0050] Referring to Figure 2 and Figure 3 , the vibration disc 1 includes a vibration disc body 10 and a vibration driving mechanism. The vibration disc body 10 is a hollow disc structure with an open upper end, and a spiral feeding channel 100 extending spirally in the height direction is formed inside, and a screening mechanism is arranged in the channel. The vibration driving mechanism drives the vibration disc body to vibrate periodically, so that the nut moves along the spiral feeding channel 100.

[0051] Referring to Figure 2 and Figure 3 , an adsorption assembly 3 is also provided, the marking execution end axis of the marking machine 4 is perpendicular to the material conveying direction, and the adsorption assembly 3 is embedded in the inside of the marking station to ensure the stability of the nut posture during marking.

[0052] Referring to Figure 2 and Figure 3 , the discharge end of the vibration disc body 10 is fixedly connected with a feeding guide rail, and the feeding guide rail is sequentially divided into a falling section 21 and a marking section 22 along the material conveying direction. The falling section 21 is inclinedly arranged, and the nut is naturally fed by gravity. The marking section 22 is horizontally arranged to provide a stable station for marking operation, and the length of the falling section 21 is greater than that of the marking section 22, so that the continuous stacking of the nuts in the falling section 21 pushes the nuts in front to continuously enter the marking section 22.

[0053] Referring to Figure 4 and Figure 5 , in order to solve the problem of chaotic nut posture and ensure that the nuts entering the feeding guide rail are in the correct initial posture of single layer, single row and hexagonal head 51 downward, a height limiting plate 11 is arranged along the length direction of the spiral feeding channel 100. The height limiting plate 11 is formed by surrounding the bottom of the height limiting plate 11 and the bearing surface of the spiral feeding channel 100 to form a height limiting channel 111, and the vertical height of the channel is accurately matched with the total height of the nut in the axial direction (the height of the hexagonal head 51 plus the height of the circular ring part 52).

[0054] Referring to Figure 4 and Figure 5 , when the nut is stacked (more than single layer) or laid horizontally (the flat end face of the hexagonal head 51 faces downward), the overall height of the nut will exceed the vertical height of the height limiting channel 111, and the exceeding part will be forcibly intercepted by the height limiting plate 11, and finally slide from the spiral feeding channel 100 to the bottom of the vibration disc body 10, realizing the screening of single layer and non-horizontal posture.

[0055] Referring to Figure 4 and Figure 5A width limiting plate 12 is arranged along the width direction of the spiral feeding channel 100, and the width limiting plate 12 and the inner side wall of the spiral feeding channel 100 form a width limiting channel. The horizontal width of the channel is adapted to the maximum radial dimension of the nut, i.e. the diagonal distance of the hexagonal head 51, and only allows a single row of nuts to pass.

[0056] Referring to Figure 4 and Figure 5 , the side of the width limiting plate 12 away from the inner side wall of the spiral feeding channel 100 is provided with a first return channel 13. The inlet of the channel is adjacent to the width limiting plate 12, and the outlet extends to the bottom of the vibration disc body 10. When multiple rows of nuts enter the width limiting channel at the same time, the excess nuts beyond the width of a single row will fall into the first return channel 13 and flow back to the bottom of the vibration disc body 10 to participate in the feeding cycle again, realizing single-row directional conveying.

[0057] Referring to Figure 4 and Figure 5 , the screening mechanism includes a guide plate 14 and a screening plate 15. The guide plate 14 is arranged obliquely along the conveying direction of the spiral feeding channel 100, and guides the nuts to the screening plate 15 through the inclined surface.

[0058] Referring to Figure 6 and Figure 7 , the screening plate 15 is provided with a plurality of groups of screening protrusions 151 on the bearing surface in intervals. Each group of screening protrusions 151 is composed of a screening protrusion 151 and an arc-shaped guide surface 152 integrally machined and formed at the end of the screening plate 15, and a screening groove 153 is formed between adjacent screening protrusions 151. The groove width of the screening groove 153 gradually increases in the direction away from the screening plate 15, and the minimum groove width is adapted to the minimum radial dimension of the nut (the diameter of the circular ring part 52).

[0059] Referring to Figure 6 and Figure 7 , the correct posture (the hexagonal head 51 faces downward). The center of gravity of the nut is low, the stability is high, and the outer diameter of the hexagonal head 51 is greater than the maximum groove width of the screening groove 153, so that the nut can stably pass through the screening groove 153 under the action of high-frequency vibration.

[0060] Referring to Figure 6 and Figure 7 , the incorrect posture (the circular ring part 52 faces downward). The center of gravity of the nut is high, the stability is poor, and part of the circular ring part 52 is easily slipped from the screening groove 153 under the synergistic action of the arc-shaped guide surface 152 and vibration.

[0061] Referring to Figure 6 and Figure 7 , the side of the screening plate 15 close to the spiral feeding channel 100 is provided with a second return channel 16. The inlet of the second return channel 16 is communicated with the edge of the screening plate 15, and the outlet extends to the bottom of the vibration disc body 10. The nuts in the incorrect posture that do not pass through the screening groove 153 flow back along the second return channel 16, completing the posture directional screening closed loop.

[0062] With reference to Figure 7 , the inlet end of the blanking section 21 is provided with an inclined baffle 17, the vertical distance between the bottom end of the inclined baffle 17 and the bearing surface of the blanking section 21 is consistent with the axial height of the nut, when the side of the nut is downward (one side of the hexagonal head 51 is attached to the bearing surface), the overall height exceeds the limit, which will be guided by the inclined baffle 17 to the second return channel 16, realizing secondary error proofing.

[0063] With reference to Figure 8 , Figure 9 and Figure 10 , the blanking section 21 is enclosed by two oppositely arranged blanking baffles 212 to form a blanking channel 213, the horizontal width of the blanking channel 213 is adapted to the diagonal distance of the hexagonal head 51 of the nut, which allows the nut to rotate around its own axis, avoids jamming due to diagonal abutment, and limits horizontal deviation. The top end of the blanking section 21 is provided with a top plate 211, the vertical distance between the top plate 211 and the bearing surface is consistent with the axial height of the nut, preventing the nut from bouncing out of the blanking channel 213 during transportation.

[0064] With reference to Figure 9 , Figure 10 and Figure 11 , the marking section 22 includes a marking side baffle 223 and a blocking rod 221, and the adsorption assembly 3 is embedded on one side of the marking side baffle 223 facing the nut conveying path. The marking side baffle 223 and the blocking rod 221 enclose a marking channel 226, the horizontal width of the marking channel 226 is adapted to the side distance of the hexagonal head 51 of the nylon locking nut to be conveyed, so that after the nut enters the channel, the planar end of the hexagonal head 51 of the nut is attached to the marking side baffle 223, and the nut cannot rotate around its own axis, realizing preliminary locking of the marking posture.

[0065] With reference to Figure 10 , Figure 11 and Figure 12 , one end of the blocking rod 221 is fixedly connected with one side of the blanking section 21, and the connecting end is provided with a guide arc 222, the bending direction of the guide arc 222 is away from the central axis of the marking channel 226. The marking side baffle 223 and the other side blanking baffle 212 of the blanking section 21 are spaced apart to form a probe slot 227, and the section of the marking side baffle 223 close to the probe slot 227 is provided with an arc-shaped buffer 224 towards the blocking rod 221. The guide arc 222, the probe slot 227 and the arc-shaped buffer 224 cooperate to correct the posture of the nut at the junction of the blanking section 21 and the marking section 22, to ensure smooth transition of the nut from the blanking section 21 with a larger width to the marking channel 226 with a smaller width, avoiding jamming.

[0066] With reference to Figure 11 , Figure 12 and Figure 13, specifically, the width of the blanking passage 213 is set to match the diagonal distance of the nut hexagonal head 51, to allow the nut to rotate around its axis during the falling process. This design is a necessary setting to avoid jamming. If the width of the blanking passage 213 limits the rotation of the nut, the diagonal distance of the nut hexagonal head 51 will be greater than the width of the passage, causing the diagonal of the hexagonal head 51 to abut against the two blanking baffles 212, causing jamming.

[0067] Referring to Figure 11 , Figure 12 and Figure 13 , since the blanking section 21 allows the nut to rotate, it needs to complete the posture correction before entering the marking passage 226, so that the flat end of the hexagonal head 51 is directly opposite the marking side baffle 223. When the nut enters the transition area through the guide arc part 222 of the stop rod 221, the guide arc part 222 first abuts against the side surface of the annular part 52 of the nut, guiding the nut to the center position of the width direction of the marking passage 226. If the flat end of the hexagonal head 51 of the nut is already inclined towards the marking side baffle 223 at this time, the overall width of the hexagonal head 51 will exceed the width of the marking passage 226, and at this time, one corner of the hexagonal head 51 will abut against the arc-shaped buffer part 224. The continuous stacking of the nuts in the blanking section 21, under the action of the slope of the blanking section 21, the rear nut will push the front nut to continuously enter the marking section 22. The nut passing through the stop rod 221, due to the continuous contact of the stop rod 221 with the annular part 52, the annular structure of the annular part 52 is easy to rotate under force, especially when pushed by the rear nut, the abutting force of the buffer part 224 will drive the nut to rotate around its axis until the flat end of the hexagonal head 51 is directly opposite the marking side baffle 223, and finally smoothly enters the marking passage 226.

[0068] Referring to Figure 9 , Figure 13 and Figure 14 , the stop rod 221 and the bearing surface of the marking section 22 form a hollow groove 225, which is in communication with the marking passage 226, and the vertical height thereof is matched with the axial height of the hexagonal head 51 of the nut to be conveyed, so that the stop rod 221 can be clamped into the groove between the hexagonal head 51 and the annular part 52 of the nut. This structure not only exposes the flat end of the hexagonal head 51 outward, facilitating the marking operation, but also prevents the nut from disengaging from the marking passage 226 through the limiting action of the stop rod 221 on the annular part 52, ensuring that the nut is stably in the marking posture.

[0069] Referring to Figure 15 and Figure 14When the nut enters the marking section 22 from the blanking section 21, the side of the annular portion 52 is in close contact with the stop rod 221, prompting the planar end of the hexagonal head 51 to be close to the marking side baffle 223. It should be noted that a small gap is reserved between the two, which is intended to compensate for the machining error of the planar end of the hexagonal head 51. If they are completely fitted, the nut may be stuck in the marking channel 226 due to machining tolerance. However, the gap will make the adjacent nuts in the marking channel 226 have their hexagonal heads 51 at an angle that abuts each other, and the abutting force will cause the nut to rotate at a small angle of less than 3°, which in turn will cause the surface to be marked to be not perpendicular to the axis of the execution end of the marking machine 4, resulting in distorted or offset marks.

[0070] Referring to Figure 13 , Figure 14 and Figure 15 , the adsorption assembly 3 is used to eliminate the above-mentioned small-angle rotation deviation and ensure the marking accuracy. The adsorption assembly 3 includes an electromagnet 32 and a buffer layer 31 covering the outside of the electromagnet 32, and the buffer layer 31 is composed of a non-slip outer layer (preferably made of rubber) and a sponge inner layer filled in the non-slip outer layer. The side of the buffer layer 31 in the initial state towards the marking channel 226 is arc-shaped and protruding, and the protruding part is inserted into the marking channel 226.

[0071] Referring to Figure 13 , Figure 14 and Figure 15 , when the nut moves to the marking position of the marking section 22, the electromagnet 32 is powered to generate a magnetic field, which forms an adsorption force on the nut made of metal, so that the planar end of the hexagonal head 51 of the nut is tightly attached to the surface of the buffer layer 31, achieving accurate positioning. Ensure that the surface to be marked is perpendicular to the axis of the execution end of the marking machine 4.

[0072] Referring to Figure 13 , Figure 14 and Figure 15 , the non-slip outer layer can enhance the friction force of the contact surface with the nut, preventing displacement of the nut during adsorption or marking. The sponge inner layer can absorb the impact force of marking and form a buffer between the nut and the electromagnet 32, preventing the electromagnet 32 from being damaged due to vibration.

[0073] Referring to Figure 2 and Figure 3 , the marking execution end of the marking machine 4 marks the planar end of the hexagonal head 51 of the nut that has been adsorbed and positioned in a direction perpendicular to the nut conveying direction. Since the adsorption assembly 3 ensures the perpendicularity of the surface to be marked to the axis of the execution end, the mark after marking is clear, accurate in position, without offset, distortion or character blur.

[0074] After the marking is completed, the electromagnet 32 is powered off, the magnetic field disappears, the adsorption force is released, the inner layer of the sponge is separated from the extrusion state and returns to the initial shape, and the subsequent nut is pushed by the inertia of the vibration of the vibration disc 1. The marked nut is pushed into the next process.

[0075] The implementation principle of the embodiment of the present application is:

[0076] Under the driving action of the vibration driving mechanism, the nuts in the disc body are continuously conveyed along the spiral feeding channel 100. The height limiting plate 11 extends along the length direction of the channel, and the bottom thereof and the channel bearing surface form a height limiting channel 111, the vertical height of which matches the axial height of the nut, so as to intercept the stacked or laid nuts. The width limiting plate 12 is arranged along the width direction of the channel, and forms a width limiting channel with the inner side wall of the channel, the horizontal width of which matches the maximum radial dimension of the nut, and the excess nuts are returned to the bottom of the disc body through the first return channel 13. The guide plate 14 is inclined to guide the nut to the screening plate 15, and the screening protrusions 151 on the screening plate 15 form screening grooves 153 with gradually changing widths, the minimum groove width of which matches the minimum radial dimension of the nut, so that the nut with correct posture (the hexagonal head 51 faces downward) stably passes through the screening groove 153, and the nut with incorrect posture is returned through the second return channel 16, so as to ensure that the nuts are single-layered, single-rowed and correctly postured.

[0077] The discharge end of the vibration disc 1 is connected with a discharging guide rail, and the guide rail is divided into a discharging section 21 and a marking section 22 along the conveying direction. The discharging section 21 is arranged obliquely, and the distance between the bottom end of the inlet end inclined baffle 17 and the bearing surface, the width of the channel enclosed by the two side discharging baffles 212, and the distance between the top plate 211 at the top end and the bearing surface all respectively match the axial height of the nut, the diagonal distance of the hexagonal head 51, and the axial height, so as to realize secondary error prevention and prevent the nut from bouncing. The marking section 22 comprises a marking side baffle 223 and a baffle rod 221, one end of the baffle rod 221 is connected with the discharging baffle 212 and is provided with a guide arc portion 222, the marking side baffle 223 is provided with an arc-shaped buffer portion 224 and a probe slot 227, and the two cooperate to correct the posture of the nut. The width of the marking channel 226 formed by the marking side baffle 223 and the baffle rod 221 matches the distance between the opposite sides of the hexagonal head 51 of the nut, and the hollow groove 225 enclosed by the baffle rod 221 and the bearing surface matches the axial height of the head of the nut, so as to limit the rotation of the nut and expose the flat end of the head.

[0078] The marking side baffle 223 is embedded with an adsorption assembly 3, which comprises an electromagnet 32 and an outer buffer layer 31 composed of a non-slip outer layer and a sponge inner layer. When the nut reaches the marking station, the electromagnet 32 is powered on to adsorb the nut, so that the flat end of the head closely contacts the buffer layer 31, and the execution end of the marking machine 4 accurately marks along the vertical conveying direction. After the marking is completed, the electromagnet 32 is powered off, and the buffer layer 31 returns to the initial state, so that the subsequent nut pushes the marked nut into the next tapping and milling process, so as to realize automatic posture screening, directional conveying and accurate marking of the nut, and ensure the accuracy and efficiency of subsequent processing.

[0079] The above merely provides an example of the present application, and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. The automatic vibration feeding and discharging system of nut tapping and milling equipment, characterized in that, Including a vibrating disc (1) and a marking machine (4); the vibrating disc (1) includes a vibrating disc body (10) and a vibrating drive mechanism, a spiral feeding channel (100) extending spirally along the height direction is formed in the vibrating disc body (10), and a screening mechanism is arranged in the spiral feeding channel (100); A discharging guide rail is connected to the discharging end of the vibrating disc body (10), the discharging guide rail is sequentially divided into a discharging section (21) and a marking section (22) along the material conveying direction, the marking section (22) extends horizontally, and the axis of the marking execution end of the marking machine (4) is perpendicular to the material conveying direction of the marking section (22); An adsorption assembly (3) for positioning and adsorbing nuts during marking is further arranged on the inner wall of the marking section (22); the marking section (22) includes a marking side baffle (223) and a baffle rod (221), the adsorption assembly (3) is embedded in the marking side baffle (223); a marking channel (226) is formed between the marking side baffle (223) and the baffle rod (221), the horizontal width of the marking channel (226) matches the distance between opposite sides of the hexagonal head (51) of the nut to be conveyed; an open groove (225) is formed between the baffle rod (221) and the bearing surface of the marking section (22); The open groove (225) is communicated with the marking channel (226), and the vertical height of the open groove (225) matches the axial height of the hexagonal head (51) of the nut to be conveyed; One end of the baffle rod (221) is connected to one of the discharging baffles (212) of the discharging section (21), and a guide arc portion (222) is arranged at the connecting end of the baffle rod (221) and the discharging baffle (212), and the bending direction of the guide arc portion (222) is towards the central axis of the marking channel (226); A probe slot (227) is formed between the marking side baffle (223) and the other discharging baffle (212) of the discharging section (21), and an arc-shaped buffer portion (224) is arranged on the segment of the marking side baffle (223) close to the probe slot (227) and towards the direction of the baffle rod (221); The adsorption assembly (3) includes an electromagnet (32) and a buffer layer (31) wrapped outside the electromagnet (32), and the buffer layer (31) is composed of a non-slip outer layer and a sponge inner layer filled in the non-slip outer layer.

2. The nut tapping and milling device automatic vibration feeding and discharging system according to claim 1, characterized in that, The screening mechanism includes a height limiting plate (11) extending along the length direction of the spiral feeding channel (100), a height limiting channel (111) is formed between the bottom of the height limiting plate (11) and the bearing surface of the spiral feeding channel (100), and the vertical height of the height limiting channel (111) matches the axial height of the nut to be conveyed.

3. The nut tapping and milling device automatic vibration feeding and discharging system according to claim 1, characterized in that, The screening mechanism includes a width limiting plate (12) arranged along the width direction of the spiral feeding channel (100), a width limiting channel is formed between the width limiting plate (12) and the inner side wall of the spiral feeding channel (100), and the horizontal width of the width limiting channel matches the maximum radial dimension of the nut to be conveyed.

4. The nut tapping and milling device automatic vibration feeding and discharging system according to claim 3, characterized in that, The first return channel (13) is provided on the side of the width limiting plate (12) away from the inner side wall of the spiral feeding channel (100), the inlet of the first return channel (13) is adjacent to the width limiting plate (12), and the outlet of the first return channel (13) extends to the bottom region of the vibration disc body (10).

5. The nut tapping and milling apparatus automated vibration up and down feeding system according to claim 1, characterized in that, The screening mechanism comprises a guide plate (14) and a screening plate (15), the guide plate (14) is arranged obliquely along the conveying direction of the spiral feeding channel (100) and is used for guiding the nuts to the screening plate (15); The bearing surface of the screening plate (15) is provided with a plurality of screening protrusions (151) at intervals, each screening protrusion (151) comprises a screening protrusion (151) integrally formed with the screening plate (15), an arc-shaped guide surface (152) is formed at the end of the screening protrusion (151), and a screening groove (153) is formed between two adjacent screening protrusions (151), the groove width of the screening groove (153) gradually increases away from the screening plate (15), and the minimum groove width matches the minimum radial dimension of the nut to be conveyed.

6. The nut tapping and milling apparatus automated vibration up and down feeding system according to claim 5, characterized in that, The screening plate (15) is provided with a second return channel (16) on the side away from the screening groove (153), the inlet of the second return channel (16) is communicated with the edge of the screening plate (15), the outlet extends to the bottom region of the vibration disc body (10), and the nut that does not pass through the screening groove (153) is guided back to the vibration disc body (10).

7. The nut tapping and milling apparatus automated vibration up and down feeding system according to claim 1, characterized in that, The inlet end of the falling section (21) is provided with an inclined baffle (17), the vertical distance between the bottom end of the inclined baffle (17) and the bearing surface of the falling section (21) matches the axial height of the nut to be conveyed; The falling section (21) comprises two falling baffles (212) arranged oppositely, and the falling baffles (212) form a falling channel (213) in a surrounding manner, the horizontal width of the falling channel (213) matches the diagonal distance of the hexagonal head (51) of the nut to be conveyed; The top end of the falling section (21) is provided with a top plate (211), and the vertical distance between the top plate (211) and the bearing surface of the falling section (21) matches the axial height of the nut to be conveyed.

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