Intelligent screening equipment for nut and screw production

Abstract

The invention discloses intelligent screening equipment for nut and screw production, and relates to the technical field of nut and screw production, the intelligent screening equipment comprises a base, a screening barrel is mounted in the middle of the top end of the base, a supporting barrel is mounted in the middle of the top end of the screening barrel, a top seat is mounted at the top end of the supporting barrel, and a side support is mounted on one side of the top end of the base; a visual box is mounted at the top of the side end face of the side support, a push-pull cylinder is mounted at the position, corresponding to the visual box, of one side of the top end of the top seat in an embedded mode, and a sliding plate is slidably mounted in the push-pull cylinder. According to the invention, preliminary inspection of materials of nuts and screws is realized, synchronous inspection of element composition and content of the nuts and screws is equivalently realized, comprehensiveness and reliability of screening detection work are improved, sensitivity and high efficiency of screening work are greatly improved, compatibility stability of equipment is improved, and the detection effect is enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of nut and screw production, and in particular to intelligent screening equipment for nut and screw production. Background Art

[0002] As an important fastener, nuts and screws play an irreplaceable role in industrial production, construction, transportation and other fields. In order to ensure the quality and safety of nuts and screws, nut and screw testing institutions have emerged. Nut and screw testing is a key process to ensure the quality and safety of nuts and screws, involving the testing of appearance, size, mechanical properties, chemical composition and metallographic structure. The performance of appearance, size, mechanical properties, chemical composition and metallographic structure will directly affect the gravity of nuts and screws;

[0003] However, the current screening equipment for nut and screw production usually only performs synchronous appearance inspection during the production process of nuts and screws, but lacks synchronous inspection means for the materials of the nuts and screws. The screening inspection work has limitations and the inspection accuracy is low. The output nuts and screws are prone to low output qualification rate due to mismatch of elemental composition and content of the materials. The nuts and screws cannot be pre-screened during the inspection process, which causes high pressure for subsequent inspections and affects the inspection effect and reliability of the device. Summary of the invention

[0004] The present invention provides an intelligent screening device for nut and screw production, which can effectively solve the problem that the current screening device for nut and screw production proposed in the above background technology usually only performs synchronous appearance inspection during the nut and screw production process, but lacks synchronous inspection means for the material of the nut and screw, and the screening inspection work has limitations and the inspection accuracy is low. The output nuts and screws are prone to have a low output qualified rate due to mismatch of elemental composition and content of the materials. The nuts and screws cannot be pre-screened during the inspection process, resulting in high pressure for subsequent inspections, which affects the inspection effect and reliability of the device.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an intelligent screening device for nut and screw production, comprising a base, a screening cylinder is installed in the middle of the top of the base, a support cylinder is installed in the middle of the top of the screening cylinder, a top seat is installed at the top of the support cylinder, a side support is installed at one side of the top of the base, a visual box is installed at the top of the side end surface of the side support, and a pre-screening distribution mechanism is installed at the top of the base;

[0006] The pre-screening distribution mechanism includes a push-pull cylinder;

[0007] A push-pull cylinder is embedded and installed at a position corresponding to the visual box on one side of the top of the top seat, a slide is slidably installed inside the push-pull cylinder, a lifting rod is installed in the middle of the bottom end of the slide, a material receiving seat is installed at the bottom end of the lifting rod, a material dividing plate is rotatably installed at the end of the inclined surface of the material receiving seat, a mounting seat is installed at the bottom of the material receiving seat, a pull pipe is installed on one side of the top of the mounting seat, and the material receiving seat is connected to the mounting seat through the pull pipe, and a slide cylinder is installed on the other side of the top of the mounting seat;

[0008] A sliding block is slidably installed inside the slide cylinder, a push rod is installed at the middle of the top of the sliding block, a telescopic rod is installed at the top of the push rod, a swivel is installed at the end of the telescopic rod, and the telescopic rod is rotatably connected to the dividing plate through the swivel, through holes are opened in the middle of the top of the sliding block and the lifting rod, and the mounting seat is connected with the through hole through a pull tube, an equal position cylinder is installed at the top of the side support seat, a piston plate is slidably installed inside the equal position cylinder, a piston rod is installed in the middle of the bottom end of the piston plate, a weight tank is installed at the bottom end of the piston rod, and a connecting pipe is installed at the bottom of the side end surface of the equal position cylinder;

[0009] A diverter seat is embedded and installed at the bottom of the side end surface of the viewing box, and a number of inclined grooves are evenly and equidistantly opened inside the diverter seat. An extension plate is installed at one end of the inclined groove at the inner position of the viewing box, and a feed pipe is installed at the other end of the inclined groove. A material guide seat is installed at the end of the feed pipe, and a feed plate is embedded and rotatably installed at the top edge of the top seat. A number of receiving plates are evenly and equidistantly installed inside the screening barrel at the position of the material guide seat, and a number of discharge hoppers are installed at equal angles along the circumferential direction at the outer curved surface of the screening barrel at the position of the receiving plate.

[0010] Preferably, the discharge hopper and the material guide seat are distributed at equal angles along the circumferential direction. There are three discharge hoppers in total. The horizontal heights of the three discharge hoppers increase successively along the rotation direction of the receiving plate. The receiving plate and the feeding plate both gradually protrude toward the center along the edge, and a number of material plates are installed on the top inclined surface of the feeding plate at equal angles along the circumferential direction.

[0011] Preferably, there are three extension plates and three feed pipes respectively, the lengths of the three extension plates gradually decrease from the base to the top seat, the extension plates and the inclined surfaces of the inclined grooves have the same inclination angle, the feed pipe is spiral-shaped, and explosion-proof glass is embedded in the side end face of the viewing box.

[0012] Preferably, the dimensions of the push-pull cylinder are exactly the same as those of the equal-position cylinder, the outer diameter and length of the lifting rod are the same as those of the piston rod, the horizontal height of the equal-position cylinder is the same as that of the push-pull cylinder, the push-pull cylinder is connected to the equal-position cylinder through a connecting pipe, a liquid guide valve is embedded in the bottom of the side end surface of the equal-position cylinder, and a filling valve is embedded in the bottom of the outer curved surface of the load-bearing tank.

[0013] Preferably, an air valve is embedded in the top of the side end surface of the push-pull cylinder, the interior of the push-pull cylinder at the top of the slide plate is filled with air, and the top area of ​​the slide plate is larger than the bottom area of ​​the slider.

[0014] Preferably, a side support is installed on the other side of the top of the base, a parallel conveying mechanism is installed on one side of the side support, and the parallel conveying mechanism includes a power box;

[0015] A power box is installed at the top of the side end surface of the side support, a driving plate is symmetrically slidably installed inside the power box, a motor is embedded and installed at the position of the side end surface of the side support corresponding to the power box, a gear plate is installed at the end of the motor output shaft located inside the power box, a gear plate is symmetrically installed at the side end surface of the driving plate at the outer position of the gear plate, an intake valve is symmetrically installed at the bottom of the side end surface of the power box, an outlet valve is symmetrically installed at the top of the side end surface of the power box, a strip box is installed at the end of the outlet valve, a blocking block is symmetrically slidably installed inside the strip box, a partition rib is installed on the inner wall of the strip box at the outer position of the blocking block, and an exhaust valve is symmetrically installed at the bottom of the strip box;

[0016] A sealing groove is provided at the top of the top seat at the inner side of the feeding tray, an air inlet is provided on one side of the bottom of the sealing groove, and an air outlet is provided on the other side of the bottom of the sealing groove. An air pipe is embedded and installed at the position of the bottom of the top seat corresponding to the air inlet, and both sides of the inner cavity of the strip box are connected with the air pipe. A driving wheel is embedded and installed at the top of the sealing groove, and the outer curved surface of the driving wheel is connected to the inner wall of the feeding tray, a guide box is installed at the top of the driving wheel, and a shaft rod is installed in the middle of the bottom end of the guide box, and the end of the shaft rod is connected to the receiving tray;

[0017] The outer curved surface of the shaft rod is provided with a strip groove at the inner side of the support tube, the top of the shaft rod is provided with a guide hole, an air supply pipe is embedded and installed at the bottom of the top seat corresponding to the air outlet, and the end of the air supply pipe is connected with the inner cavity of the support tube, and an exhaust seat is installed at the outer curved surface of the shaft rod corresponding to the top of the receiving tray, and a plurality of exhaust ports are provided at equal angles on the outer curved surface of the exhaust seat along the circumferential direction, and a plurality of exhaust grooves are provided at equal angles on the outer curved surface of the guide box along the circumferential direction;

[0018] A slide bar is installed in the middle of the side end surface of the blocking block, and the slide bar is slidably connected to the strip box, an elastic plate is installed at the end of the slide bar, and a switch is embedded and installed at the position of the elastic plate corresponding to the top of the side end surface of the strip box.

[0019] Preferably, the partition rib divides the strip box into a flow chamber and a pressure relief chamber, the air outlet valve is connected to the gas supply pipe through the flow chamber, the exhaust valve is connected to the flow chamber through the pressure relief chamber, the inner diameter of the exhaust valve is smaller than the width of the block, the distance between the exhaust valve and the partition rib is half the width of the block, an extension pipe is installed in the middle of the bottom end of the strip box, the side end face of the side support is located at the bottom of the motor and a pressure regulating valve is embedded and installed, and the end of the extension pipe is connected to the pressure regulating valve.

[0020] Preferably, the inclination angle of the exhaust groove is the same as the slope of the top of the feeding tray, the inclination angle of the exhaust port is the same as the slope of the top of the receiving tray, the inner cavities of the guide box and the exhaust seat are connected to the strip groove through guide holes, and the inner diameter of the support tube is larger than the outer diameter of the shaft rod.

[0021] Preferably, the sliding distance of the elastic plate is equal to the width of the block, the switch is a synchronous control switch of the motor and the external alarm, the motor input end is electrically connected to the switch output end, and the switch input end is electrically connected to the external power supply output end.

[0022] Preferably, a filter box is installed at the end of the intake valve, and the interior of the filter box is filled with filter media in sequence. The bottom end of the driving wheel is provided with a plurality of deflection grooves at equal angles along the circumferential direction, and the toothed disc is a half gear.

[0023] Compared with the prior art, the invention has the following beneficial effects: the invention has a scientific and reasonable structure and is safe and convenient to use;

[0024] 1. A pre-screening distribution mechanism is provided. Through the cooperation of the push-pull cylinder, the slide plate, the lifting rod, the equal position cylinder, the piston plate and the connecting pipe, a connecting vessel structure can be constructed. The relative height of the docking seat can be synchronously regulated, the gravity can be transformed and utilized, and the weight of the nuts and screws can be synchronously compared with the standard weight. On the one hand, the nuts and screws can be pre-screened to improve the screening efficiency and effect and reduce the subsequent detection pressure. On the other hand, the external appearance detection can be supplemented to realize the preliminary inspection of the material of the nuts and screws, which is equivalent to realizing the synchronous inspection of the elemental composition and content of the nuts and screws, and can indirectly realize the preliminary inspection of the grain size and organizational morphology of the nuts and screws, making the detection work more convenient and efficient, effectively improving the comprehensiveness and reliability of the screening detection work, and indirectly improving the output qualified rate of nuts and screws.

[0025] 2. An air pressure conversion structure can be constructed by cooperating with the mounting seat, pull tube, slide cylinder, slider, push rod, telescopic rod, swivel head and through hole, which can convert the slight displacement of the slide plate into a large deflection of the dividing plate. With the diversion and guiding function of the diverter seat, chute, extension plate, feeder pipe and guide seat, the nuts and screws can be quickly and synchronously separated and guided, which greatly improves the sensitivity and efficiency of screening work, realizes precise feeding, greatly improves the screening detection accuracy, effectively avoids the mixing of qualified products and unqualified products, avoids the trouble of secondary screening, and improves the output quality of nuts and screws. The feeder pipe can reduce the rolling speed of the nuts and screws, reduce the impact on the equipment, and improve the durability of the equipment. With the guiding function of the feed tray, receiving tray and discharge hopper, the stability and reliability of screening and feeding can be effectively improved.

[0026] 3. By cooperating with the piston rod and the load tank, a gravity compensation structure can be constructed to compensate and limit the relative pressure on the slide plate and the piston plate. On the one hand, it can effectively offset the adverse effects of the equipment's own weight on the detection accuracy, compensate for the wear error of the equipment, further improve the detection accuracy, make the detection work more sensitive and efficient, and increase the effective service life of the equipment. On the other hand, when standard parts are missing, the detection standards can be equivalently limited, the flexibility and efficiency of the detection standard setting work can be improved, and the detection work can be more convenient and reliable. On the other hand, it can effectively adapt to detection and screening work of different specifications, expand the scope of application of the equipment, and improve the compatibility and stability of the equipment, so that the detection effect can be enhanced.

[0027] 4. A parallel conveying mechanism is provided. Through the cooperation of the power box, drive plate, toothed disc and toothed plate, an airflow traction structure can be constructed. With the flow limiting and guiding function of the outlet valve and the inlet valve, the airflow can be traction-converted, and the rigid mechanical drive of the motor is changed to an indirect elastic drive. On the one hand, it can effectively improve the stability of the driving force, making the conveying of nuts and screws more stable and efficient. On the other hand, it can give the equipment sufficient pressure buffer space, and with the synchronous regulation function of the strip box, block, partition rib, exhaust valve, slide rod, elastic plate and switch, it can effectively improve the pressure stability during the operation of the equipment, improve the stability of the equipment operation and the timeliness and effectiveness of the inspection and maintenance, avoid equipment damage caused by accidental jamming of the equipment, increase the effective service life of the equipment, reduce the failure rate, compress the failure loss, and improve the working efficiency of the equipment in disguise.

[0028] 5. The air flow pressure can be converted and utilized through the coordination of the air pipe, sealing groove, air inlet and air outlet. With the linkage effect of the shaft rod, the driving wheel can drive the feeding plate and the receiving plate to rotate synchronously, which effectively improves the synchronization and compatibility stability of the equipment's receiving and unloading work, making the screening and conveying work more continuous and reliable. With the strip grooves, guide holes and air pipes, a complete air flow passage can be constructed, and the air flow can be limited and guided. On the one hand, it can effectively improve the transmission stability of the driving force and make the connection between the various components of the equipment smoother and more reliable. On the other hand, with the diversion and guiding effect of the guide box, exhaust seat, exhaust port and exhaust groove, and the centrifugal force, the conveying of nuts and screws is smoother and more stable, and the jam rate is reduced.

[0029] To sum up, the screening equipment for nut and screw production can perform auxiliary comprehensive inspection on the external appearance during the production process of nuts and screws, and can use gravity conversion to indirectly realize synchronous equivalent inspection of the material of nuts and screws, making the inspection work more comprehensive and efficient, more accurate and reliable, effectively reducing the subsequent inspection pressure, improving the output qualified rate of nuts and screws, and optimizing the nut and screw conveying method, making the nut and screw conveying work more stable and smooth, and reducing the equipment jamming rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0031] In the attached picture:

[0032] Figure 1 It is a schematic diagram of the structure of the present invention;

[0033] Figure 2 It is a schematic diagram of the support tube installation structure of the present invention;

[0034] Figure 3 It is a schematic diagram of the installation structure of the feed pipe of the present invention;

[0035] Figure 4 It is a schematic diagram of the structure of the pre-screening and dispensing mechanism of the present invention;

[0036] Figure 5 It is a schematic diagram of the installation structure of the load-bearing tank of the present invention;

[0037] Figure 6 It is a schematic diagram of the installation structure of the material receiving seat of the present invention;

[0038] Figure 7 It is a schematic diagram of the structure of the parallel conveying mechanism of the present invention;

[0039] Figure 8 It is a schematic diagram of the installation structure of the drive plate of the present invention;

[0040] Fig. 9 It is a schematic diagram of the shaft rod installation structure of the present invention;

[0041] Numbers in the figure: 100, base; 101, screening cylinder; 102, support cylinder; 103, top seat; 104, side support; 105, visual box; 106, explosion-proof glass; 107, side support;

[0042] 200, pre-screening distribution mechanism; 201, push-pull cylinder; 202, slide plate; 203, lifting rod; 204, receiving seat; 205, material distribution plate; 206, mounting seat; 207, pull tube; 208, slide cylinder; 209, slide block; 210, push rod; 211, telescopic rod; 212, swivel head; 213, through hole; 214, equal position cylinder; 215, piston plate; 216, piston rod; 217, load-bearing tank; 218, connecting pipe; 219, diverter seat; 220, chute; 221, extension plate; 222, material discharge pipe; 223, material guide seat; 224, feeding tray; 225, receiving tray; 226, discharge hopper;

[0043] 2011, air valve; 2141, liquid guide valve; 2171, filling valve; 2241, strip plate;

[0044] 300, parallel conveying mechanism; 301, power box; 302, driving plate; 303, motor; 304, toothed disc; 305, toothed plate; 306, air outlet valve; 307, strip box; 308, blocking block; 309, partition rib; 310, exhaust valve; 311, air delivery pipe; 312, sealing groove; 313, air inlet; 314, air outlet; 315, driving wheel; 316, guide box; 317, shaft; 318, strip groove; 319, guide hole; 320, air delivery pipe; 321, exhaust seat; 322, exhaust port; 323, exhaust groove; 324, sliding rod; 325, elastic plate; 326, switch; 327, air intake valve;

[0045] 3071. Flow chamber; 3072. Pressure relief chamber; 3073. Extension tube; 3074. Pressure regulating valve; 3151. Deflection slot; 3271. Filter box. DETAILED DESCRIPTION

[0046] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0047] Example: Figure 1-9As shown, the present invention provides a technical solution, an intelligent screening device for nut and screw production, comprising a base 100, a screening cylinder 101 is installed in the middle of the top of the base 100, a support cylinder 102 is installed in the middle of the top of the screening cylinder 101, a top seat 103 is installed at the top of the support cylinder 102, a side support 104 is installed on one side of the top of the base 100, a visual box 105 is installed on the top of the side end surface of the side support 104, and a pre-screening distribution mechanism 200 is installed on the top of the base 100;

[0048] The pre-screening distribution mechanism 200 includes a push-pull cylinder 201, a slide plate 202, a lifting rod 203, a material receiving seat 204, a material dividing plate 205, a mounting seat 206, a pull tube 207, a slide cylinder 208, a slider 209, a push rod 210, a telescopic rod 211, a swivel head 212, a through hole 213, an equal position cylinder 214, a piston plate 215, a piston rod 216, a load tank 217, a connecting pipe 218, a diverter seat 219, a chute 220, an extension plate 221, a material discharge pipe 222, a material guide seat 223, a feeding tray 224, a material receiving tray 225 and a discharge hopper 226;

[0049] A push-pull cylinder 201 is embedded and installed at the position of the visual box 105 corresponding to the top side of the top seat 103, a slide plate 202 is slidably installed inside the push-pull cylinder 201, a lifting rod 203 is installed at the middle of the bottom end of the slide plate 202, a material receiving seat 204 is installed at the bottom end of the lifting rod 203, a material dividing plate 205 is rotatably installed at the inclined end of the material receiving seat 204, a mounting seat 206 is installed at the bottom of the material receiving seat 204, a pull tube 207 is installed at one side of the top of the mounting seat 206, and the material receiving seat 204 is connected to the mounting seat 206 through the pull tube 207, and a slide cylinder 208 is installed on the other side of the top of the mounting seat 206;

[0050] A slider 209 is slidably installed inside the slide cylinder 208, an air valve 2011 is embedded and installed on the top of the side end surface of the push-pull cylinder 201, and the push-pull cylinder 201 is filled with air at the top position of the slide plate 202. The top area of ​​the slide plate 202 is larger than the bottom area of ​​the slider 209, so as to improve the detection sensitivity. A push rod 210 is installed in the middle of the top of the slider 209, and a telescopic rod 211 is installed on the top of the push rod 210. A swivel 212 is installed at the end of the telescopic rod 211, and the telescopic rod 211 is rotatably connected to the dividing plate 205 through the swivel 212. A through hole 213 is opened in the middle of the top of the slide plate 202 and the lifting rod 203, and the mounting seat 206 is connected with the through hole 213 through the pull tube 207. An equal position cylinder 214 is installed on the top of the side support 104, and a piston plate 215 is slidably installed inside the equal position cylinder 214;

[0051] A piston rod 216 is installed in the middle of the bottom end of the piston plate 215, a weight tank 217 is installed at the bottom end of the piston rod 216, a connecting pipe 218 is installed at the bottom of the side end surface of the equal position cylinder 214, the size and specification of the push-pull cylinder 201 are exactly the same as those of the equal position cylinder 214, the outer diameter and length of the lifting rod 203 are the same as those of the piston rod 216, the horizontal height of the equal position cylinder 214 is the same as that of the push-pull cylinder 201, the push-pull cylinder 201 is connected to the equal position cylinder 214 through the connecting pipe 218, a liquid guide valve 2141 is embedded in the bottom of the side end surface of the equal position cylinder 214, and a filling valve 2171 is embedded in the bottom of the outer curved surface of the weight tank 217, so as to supplement the gravity and reduce the influence of the equipment's own weight;

[0052] A shunt seat 219 is embedded and installed at the bottom of the side end face of the visual box 105, and a plurality of chute slots 220 are evenly and evenly opened inside the shunt seat 219. An extension plate 221 is installed at one end of the chute 220 at the inner position of the visual box 105, and a feed pipe 222 is installed at the other end of the chute 220. There are three extension plates 221 and three feed pipes 222 respectively, and the lengths of the three extension plates 221 gradually decrease from the base 100 to the top seat 103. The extension plates 221 and the inclined surfaces of the chute 220 have the same inclination angle, and the feed pipe 222 is spiral-shaped. An explosion-proof glass 106 is embedded and installed on the side end face of the visual box 105 to separate and transport nuts and screws. A material guide seat 223 is installed at the end of the feed pipe 222, and a feeding tray 224 is embedded and rotatably installed at the top edge of the top seat 103. A plurality of receiving trays 225 are evenly and evenly rotatably installed at the position of the material guide seat 223 inside the screening barrel 101;

[0053] A plurality of discharge hoppers 226 are installed at equal angles along the circumferential direction at the position of the receiving plate 225 on the outer curved surface of the screening drum 101. The discharge hoppers 226 and the material guide seats 223 are distributed at equal angles along the circumferential direction. There are three discharge hoppers 226 in total. The horizontal heights of the three discharge hoppers 226 increase successively along the rotation direction of the receiving plate 225. The receiving plate 225 and the feeding plate 224 are gradually raised toward the center along the edge. A plurality of material plates 2241 are installed at equal angles along the circumferential direction on the inclined surface at the top of the feeding plate 224, so as to improve the stability of the nut and screw conveying work.

[0054] A side support 107 is installed on the other side of the top of the base 100, and a parallel conveying mechanism 300 is installed on one side of the side support 107. The parallel conveying mechanism 300 includes a power box 301, a driving plate 302, a motor 303, a toothed disc 304, a toothed plate 305, an air outlet valve 306, a strip box 307, a blocking block 308, a partition rib 309, an exhaust valve 310, an air delivery pipe 311, a sealing groove 312, an air inlet 313, an air outlet 314, a driving wheel 315, a guide box 316, a shaft 317, a strip groove 318, a guide hole 319, an air delivery pipe 320, an exhaust seat 321, an exhaust port 322, an exhaust groove 323, a sliding rod 324, an elastic plate 325, a switch 326 and an air inlet valve 327;

[0055] A power box 301 is installed on the top of the side end surface of the side support 107, and a driving plate 302 is symmetrically slidably installed inside the power box 301. A motor 303 is embedded and installed at the position of the side end surface of the side support 107 corresponding to the power box 301. A toothed disc 304 is installed at the end of the output shaft of the motor 303 at the position inside the power box 301. A toothed plate 305 is symmetrically installed at the side end surface of the driving plate 302 at the position outside the toothed disc 304. An intake valve 327 is symmetrically installed at the bottom of the side end surface of the power box 301. An outlet valve 306 is symmetrically installed at the top of the side end surface of the power box 301. A strip box 307 is installed at the end of the outlet valve 306. A blocking block 308 is symmetrically slidably installed inside the strip box 307. A partition rib 309 is installed on the inner wall of the strip box 307 at the position outside the blocking block 308. An exhaust valve 310 is symmetrically installed at the bottom of the strip box 307.

[0056] A sealing groove 312 is provided at the top of the top seat 103, which is located inside the feeding tray 224. An air inlet 313 is provided on one side of the bottom of the sealing groove 312, and an air outlet 314 is provided on the other side of the bottom of the sealing groove 312. An air delivery pipe 311 is embedded and installed at the position of the air inlet 313 at the bottom of the top seat 103. The partition rib 309 divides the strip box 307 into a flow chamber 3071 and a pressure relief chamber 3072. The air outlet valve 306 is connected to the air delivery pipe 311 through the flow chamber 3071, and the exhaust valve 310 is connected to the pressure relief chamber 3072 through the pressure relief chamber 3071. 2 is communicated with the flow cavity 3071, the inner diameter of the exhaust valve 310 is smaller than the width of the block 308, the distance between the exhaust valve 310 and the partition rib 309 is half the width of the block 308, an extension pipe 3073 is installed in the middle of the bottom end of the strip box 307, the side end surface of the side support 107 is located at the bottom of the motor 303 and embedded with a pressure regulating valve 3074, and the end of the extension pipe 3073 is connected to the pressure regulating valve 3074 to perform flow limiting and guiding, thereby improving the smoothness of the equipment operation, and both sides of the inner cavity of the strip box 307 are communicated with the gas delivery pipe 311;

[0057] A driving wheel 315 is embedded and installed at the top of the sealing groove 312, a filter box 3271 is installed at the end of the air inlet valve 327, and the filter medium is sequentially filled inside the filter box 3271. A plurality of deflection grooves 3151 are opened at equal angles along the circumferential direction at the bottom of the driving wheel 315. The toothed disc 304 is a half gear to convert the driving force and improve the driving force stability. The outer curved surface of the driving wheel 315 is connected to the inner wall of the feeding tray 224. A guide box 316 is installed at the top of the driving wheel 315. A shaft 317 is installed at the middle of the bottom end of the guide box 316, and the end of the shaft 317 is connected to the receiving tray 225.

[0058] The outer curved surface of the shaft 317 is provided with a strip groove 318 at the inner side of the support tube 102, and a guide hole 319 is provided at the top of the shaft 317. An air supply pipe 320 is embedded and installed at the bottom of the top seat 103 corresponding to the air outlet 314, and the end of the air supply pipe 320 is connected to the inner cavity of the support tube 102. An exhaust seat 321 is installed at the outer curved surface of the shaft 317 corresponding to the top position of the receiving tray 225. The outer curved surface of the exhaust seat 321 is provided with equal angles along the circumferential direction. There are a number of exhaust ports 322, and a number of exhaust grooves 323 are opened at equal angles on the outer curved surface of the guide box 316 along the circumferential direction. The inclination angle of the exhaust groove 323 is the same as the top slope of the feeding tray 224, and the inclination angle of the exhaust port 322 is the same as the top slope of the receiving tray 225. The inner cavities of the guide box 316 and the exhaust seat 321 are connected to the strip groove 318 through the guide hole 319. The inner diameter of the support tube 102 is larger than the outer diameter of the shaft rod 317, so as to improve the stability of material feeding;

[0059] A sliding rod 324 is installed in the middle of the side end surface of the blocking block 308, and the sliding rod 324 is slidably connected to the strip box 307. An elastic plate 325 is installed at the end of the sliding rod 324. A switch 326 is embedded and installed at the top of the side end surface of the strip box 307 corresponding to the position of the elastic plate 325. The elastic plate 325 can slide a distance equal to the width of the blocking block 308. The switch 326 is a synchronous control switch for the motor 303 and the external alarm. The input end of the motor 303 is electrically connected to the output end of the switch 326, and the input end of the switch 326 is electrically connected to the output end of the external power supply, so as to improve the operating pressure stability of the equipment.

[0060] Working principle and use process of the present invention: When the screening equipment for nut and screw production is actually used, the equipment can be placed before the shape and size detection process or after the shape and size detection process, and the shape and size detection process is combined to perform comprehensive detection on the nuts and screws. First, the equipment is placed on the ground of the working area, the base 100 is placed stably, and the side of the feeding tray 224 away from the equal position cylinder 214 is placed at the bottom of the discharge end of the external nut and screw conveying mechanism, so that the nuts and screws can fall stably to the side of the feeding tray 224 away from the equal position cylinder 214 under the conveyance of the external conveying device, and different external material receiving devices are placed at the bottom of the three discharge hoppers 226 respectively, so as to collect and transport qualified products and unqualified products respectively;

[0061] Then, the calibration and parameter setting of the device are carried out. First, the piston plate 215 is pressed to prevent it from being displaced. The hydraulic liquid is injected into the equal position cylinder 214 through the liquid guide valve 2141. The hydraulic liquid will enter the push-pull cylinder 201 through the connecting pipe 218 to replenish the hydraulic liquid at the bottom of the slide plate 202. In this process, the hydraulic liquid will press the slide plate 202, forcing the slide plate 202 to drive the material receiving seat 204 to rise synchronously through the lifting rod 203. When the material receiving seat 204 rises to the highest point, the injection of hydraulic liquid is stopped and the limit of the piston plate 215 is released.

[0062] At this time, the push-pull cylinder 201, the slide plate 202, the equal position cylinder 214 and the piston plate 215 together form a communicating vessel structure under the connecting action of the connecting pipe 218. Since the tension on the bottom of the slide plate 202 is greater than the tension on the bottom of the piston plate 215, the slide plate 202 will drop under the bottom tension, and the hydraulic fluid at the bottom will be pressed into the equal position cylinder 214 through the connecting pipe 218. The corresponding piston plate 215 will rise synchronously, and the height of the material receiving seat 204 will be reduced accordingly.

[0063] Then, clean water is injected into the load-bearing tank 217 through the filling valve 2171 to increase the tension on the bottom of the piston plate 215. Under the tension on the bottom, the piston plate 215 will press the hydraulic fluid at its bottom into the push-pull cylinder 201 through the connecting pipe 218, forcing the slide plate 202 to drive the material receiving seat 204 to rise synchronously through the lifting rod 203. When the end of the inclined surface of the material receiving seat 204 is flush with the top of the diverter seat 219, the water injection is stopped, and the tension on the bottom of the piston plate 215 is compensated and corrected to offset the tension on the bottom of the slide plate 202, that is, the influence of the self-weight of the material receiving seat 204 and the material dividing plate 205 on the detection work is eliminated, thereby improving the detection accuracy;

[0064] Then, air is injected into the push-pull cylinder 201 through the air valve 2011, and the air flow enters the pull tube 207 through the through hole 213, and enters the slide cylinder 208 through the mounting seat 206, forcing the slider 209 to slide relatively along the slide cylinder 208 under the action of air pressure. The push rod 210 will also drag the telescopic rod 211 to rise and fall synchronously under the drive of the slider 209, and make the dividing plate 205 deflect relative to the receiving seat 204 under the drive of the rotating head 212. As the dividing plate 205 deflects, the telescopic rod 211 will be synchronously extended and retracted, and the rotating head 212 will deflect accordingly. By injecting air into the push-pull cylinder 201 through the air valve 2011 or releasing the air inside the push-pull cylinder 201, the deflection angle of the dividing plate 205 can be adjusted and corrected, so that the end of the inclined surface of the dividing plate 205 is flush with the middle extension plate 221, and the adjustment and correction work of the pre-screening distribution mechanism 200 is completed;

[0065] Then, air is injected into the strip box 307 through the pressure regulating valve 3074 via the extension pipe 3073 to limit and adjust the air pressure between the two blocking blocks 308, and to limit the pressure on the inner end surface of the blocking block 308. This pressure is the safe load pressure of the parallel conveying mechanism 300 during the operation of the equipment, and ensures the safety and stability of the equipment during operation. After the air pressure between the two blocking blocks 308 is regulated, the calibration and adjustment work of the parallel conveying mechanism 300 is completed.

[0066] Subsequently, according to actual needs, standard parts of nuts or screws can be put into the equal position cylinder 214 to increase the pressure on the top of the piston plate 215. At this time, the piston plate 215 will drop under the action of the top pressure, and press the bottom hydraulic fluid into the push-pull cylinder 201 through the connecting pipe 218, forcing the material receiving seat 204 to rise, and the slide plate 202 will press the top air into the slide cylinder 208, forcing the slide block 209 to rise. At this time, the material dividing plate 205 will also deflect synchronously, and finally the end of its inclined surface will be flush with the top extension plate 221. In the absence of standard parts, this step can also be replaced by injecting a corresponding weight of clean water into the load-bearing tank 217 again. The weight of the clean water injected into the load-bearing tank 217 again should be equal to the weight of the standard parts, completing the setting of the screening standard;

[0067] Then the equipment can be started to screen the nuts and screws. During the screening process of the nuts and screws, the motor 303 drives the tooth plate 305 to move back and forth through the tooth disc 304, forcing the driving plate 302 to move back and forth inside the power box 301 driven by the tooth plate 305, pulling the external air, so that the airflow is filtered by the filter box 3271, enters the power box 301 through the air inlet valve 327, and is pressed into the flow cavity 3071 inside the strip box 307 through the air outlet valve 306, and then is pressed into the sealing groove 312 through the air supply pipe 311 and the air inlet 313, forcing the air pressure inside the deflection groove 3151 to rise, so that the driving wheel 315 drives the feeding tray 224 and the guide box 316 to rotate synchronously under the action of the air pressure, and the receiving tray 225 will also rotate synchronously driven by the shaft 317;

[0068] At this time, the nuts or screws that fall onto the surface of the feeding tray 224 through the external nut and screw conveying mechanism will be driven by the feeding tray 224 and synchronously displaced with the feeding tray 224 under the limiting action of the material belt plate 2241. Since the feeding tray 224 protrudes from the edge to the center, during the rotation of the feeding tray 224, coupled with the effect of centrifugal force, the nuts or screws on the surface of the feeding tray 224 will eventually fall from the feeding tray 224 when it moves to the opening of the top seat 103, and finally fall smoothly onto the receiving seat 204 under the limiting action of the visual box 105.

[0069] At this time, the pressure on the bottom of the slide plate 202 increases. If the weight of the nut or screw that falls on the receiving seat 204 meets the standard, that is, its weight is the same as that of the standard part, it can offset the pressure of the standard part on the top of the piston plate 215, or offset the gravity of the clean water injected again into the load-bearing tank 217. The force state of the slide plate 202 and the piston plate 215 will return to the relative initial state, and the slide plate 202 will drop to the initial position, forcing the air flow inside the slide cylinder 208 to enter the push-pull cylinder 201. The material dividing plate 205 will deflect accordingly, and its end will eventually be flush with the middle extension plate 221. At this time, the nut or screw that falls on the receiving seat 204 will slide onto the middle extension plate 221 and enter the middle discharge pipe 222 through the middle inclined slot 220.

[0070] If the weight of the nut or screw falling on the material receiving seat 204 is greater than that of the standard part, the slide plate 202 will further drop under the pressure at the bottom, causing the material receiving seat 204 to deviate from the initial state, and the material dividing plate 205 will deflect accordingly, and its end will eventually abut against the bottom extension plate 221. At this time, the nut or screw falling on the material receiving seat 204 will slide onto the bottom extension plate 221 and enter the bottom discharge pipe 222 through the bottom inclined groove 220. Similarly, if the weight of the nut or screw falling on the material receiving seat 204 is less than that of the standard part, the end of the material dividing plate 205 will eventually abut against the top extension plate 221. At this time, the nut or screw falling on the material receiving seat 204 will slide onto the top extension plate 221 and enter the top discharge pipe 222 through the top inclined groove 220.

[0071] In the above process, the rising of the slide plate 202 will press the airflow inside the push-pull cylinder 201 into the slide cylinder 208, and the falling of the slide plate 202 will draw the airflow inside the slide cylinder 208 into the push-pull cylinder 201, forcing the slider 209 to drive the push rod 210 to rise and fall accordingly, so that the dividing plate 205 will produce a corresponding deflection. By utilizing the difference in the force-bearing area between the slide plate 202 and the slider 209, the slight displacement of the slide plate 202 can be converted into a large deflection of the dividing plate 205, thereby improving the accuracy of the feeding work of the dividing plate 205 and making the screening work more accurate and sensitive.

[0072] At this time, the nuts or screws that meet the weight standard will pass through the middle discharge pipe 222, the middle guide seat 223, roll into the screening drum 101 and fall on the middle receiving plate 225, the nuts or screws with low weight will pass through the top discharge pipe 222, the top guide seat 223, roll into the screening drum 101 and fall on the top receiving plate 225, and the nuts or screws with high weight will pass through the bottom discharge pipe 222, the bottom guide seat 223, roll into the screening drum 101 and fall on the bottom receiving plate 225, and rotate with the receiving plate 225, and under the action of centrifugal force, with the inclined surface guide of the receiving plate 225, be discharged through the corresponding discharge hopper 226;

[0073] The airflow entering the sealing groove 312 will enter the inner cavity of the support tube 102 through the air outlet 314 and the air delivery pipe 320, and enter the guide box 316 and the exhaust seat 321 through the strip groove 318 and the guide hole 319, and be discharged through the exhaust groove 323 and the exhaust port 322 respectively, blowing the nuts or screws on the surface of the feeding tray 224 and each receiving tray 225, and the centrifugal force makes the conveying of the nuts or screws more stable;

[0074] During the operation of the equipment, if the device is stuck due to unexpected factors and the driving wheel 315 cannot rotate normally, the external air is continuously sent into the strip box 307, and the air pressure inside the circulation chamber 3071 will suddenly rise. When the air pressure is greater than the air pressure inside the pressure relief chamber 3072, the block 308 will slide toward each other under the action of the pressure difference and no longer block the exhaust valve 310. The airflow sent into the strip box 307 will be discharged through the exhaust valve 310 to maintain the stable operating pressure of the equipment and ensure the safe operation of the equipment. At the same time, the block 308 will drive the elastic plate 325 to slide through the sliding rod 324, so that the elastic plate 325 presses against the switch 326. The switch 326 will stop the motor 303 and send a signal to the external alarm for early warning to maintain the stable operation of the equipment.

[0075] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An intelligent screening device for nut and screw production, comprising a base (100), characterized in that: A screening cylinder (101) is installed in the middle of the top of the base (100), a support cylinder (102) is installed in the middle of the top of the screening cylinder (101), a top seat (103) is installed at the top of the support cylinder (102), a side support seat (104) is installed on one side of the top of the base (100), a visual box (105) is installed on the top of the side end surface of the side support seat (104), and a pre-screening distribution mechanism (200) is installed on the top of the base (100); The pre-screening distribution mechanism (200) comprises a push-pull cylinder (201); A push-pull cylinder (201) is embedded and installed at a position corresponding to the visible box (105) on one side of the top of the top seat (103); a slide plate (202) is slidably installed inside the push-pull cylinder (201); a lifting rod (203) is installed in the middle of the bottom end of the slide plate (202); a material receiving seat (204) is installed at the bottom end of the lifting rod (203); a material dividing plate (205) is rotatably installed at the inclined end of the material receiving seat (204); a mounting seat (206) is installed at the bottom of the material receiving seat (204); a pull tube (207) is installed on one side of the top end of the mounting seat (206); and the material receiving seat (204) is connected to the mounting seat (206) through the pull tube (207); and a slide cylinder (208) is installed on the other side of the top end of the mounting seat (206); A slider (209) is slidably mounted inside the slide cylinder (208), a push rod (210) is mounted at the middle of the top of the slider (209), a telescopic rod (211) is mounted at the top of the push rod (210), a swivel (212) is mounted at the end of the telescopic rod (211), and the telescopic rod (211) is rotatably connected to the material distribution plate (205) through the swivel (212), and a through hole (213) is provided in the middle of the top of each of the slide plate (202) and the lifting rod (203). ), and the mounting seat (206) is connected to the through hole (213) through the pull tube (207), an equal position cylinder (214) is installed at the top of the side support seat (104), a piston plate (215) is slidably installed inside the equal position cylinder (214), a piston rod (216) is installed in the middle of the bottom end of the piston plate (215), a load tank (217) is installed at the bottom end of the piston rod (216), and a connecting pipe (218) is installed at the bottom of the side end surface of the equal position cylinder (214); A diverter seat (219) is embedded and installed at the bottom of the side end surface of the viewing box (105), and a plurality of equidistantly arranged inclined grooves (220) are provided inside the diverter seat (219). An extension plate (221) is installed at one end of the inclined groove (220) located at the inner side of the viewing box (105), and a discharge pipe (222) is installed at the other end of the inclined groove (220). A material guide seat (223) is installed at the end of the discharge pipe (222). A feeding plate (224) is embedded and rotatably installed at the top edge of the top seat (103). A plurality of material receiving plates (225) are equidistantly and rotatably installed inside the screening drum (101) at positions corresponding to the material guide seat (223), and a plurality of material discharge hoppers (226) are installed at equal angles along the circumferential direction at positions corresponding to the material receiving plates (225) on the outer curved surface of the screening drum (101).

2. The intelligent screening equipment for nut and screw production according to claim 1 is characterized in that: The discharge hopper (226) and the material guide seat (223) are distributed at equal angles along the circumferential direction. There are three discharge hoppers (226) in total. The horizontal heights of the three discharge hoppers (226) are successively increased along the rotation direction of the receiving plate (225). The receiving plate (225) and the feeding plate (224) are gradually raised along the edge toward the center. The top inclined surface of the feeding plate (224) is provided with a plurality of material plates (2241) at equal angles along the circumferential direction.

3. The intelligent screening equipment for nut and screw production according to claim 1 is characterized in that: There are three extension plates (221) and three feed tubes (222), respectively. The lengths of the three extension plates (221) gradually decrease from the base (100) to the top seat (103). The extension plates (221) and the inclined surfaces of the inclined grooves (220) have the same inclination angle. The feed tubes (222) are spiral-shaped. The side end surface of the viewing box (105) is embedded with explosion-proof glass (106).

4. The intelligent screening equipment for nut and screw production according to claim 1 is characterized in that: The dimensions of the push-pull cylinder (201) are exactly the same as those of the equal-position cylinder (214); the outer diameter and length of the lifting rod (203) are the same as those of the piston rod (216); the horizontal height of the equal-position cylinder (214) is the same as that of the push-pull cylinder (201); the push-pull cylinder (201) is connected to the equal-position cylinder (214) via a connecting pipe (218); a liquid guide valve (2141) is embedded in the bottom of the side end surface of the equal-position cylinder (214); and a filling valve (2171) is embedded in the bottom of the outer curved surface of the load-bearing tank (217).

5. The intelligent screening equipment for nut and screw production according to claim 1 is characterized in that: An air valve (2011) is embedded and installed at the top of the side end surface of the push-pull cylinder (201), and the interior of the push-pull cylinder (201) is filled with air at the top position of the slide plate (202), and the top area of ​​the slide plate (202) is larger than the bottom area of ​​the slider (209).

6. The intelligent screening equipment for nut and screw production according to claim 1 is characterized in that: A side support (107) is installed on the other side of the top of the base (100), and a parallel conveying mechanism (300) is installed on one side of the side support (107), and the parallel conveying mechanism (300) includes a power box (301); A power box (301) is installed at the top of the side end surface of the side support (107), a driving plate (302) is symmetrically slidably installed inside the power box (301), a motor (303) is embedded and installed at a position of the side end surface of the side support (107) corresponding to the power box (301), a toothed disc (304) is installed at the end of the output shaft of the motor (303) at a position inside the power box (301), and a toothed plate (305) is symmetrically installed at a position outside the toothed disc (304) on the side end surface of the driving plate (302). An air inlet valve (327) is symmetrically mounted on the bottom of the side end surface of the power box (301), an air outlet valve (306) is symmetrically mounted on the top of the side end surface of the power box (301), a strip box (307) is mounted on the end of the air outlet valve (306), a block (308) is symmetrically slidably mounted inside the strip box (307), a partition rib (309) is mounted on the inner wall of the strip box (307) at a position outside the block (308), and an air exhaust valve (310) is symmetrically mounted on the bottom end of the strip box (307); A sealing groove (312) is provided at the top of the top seat (103) at a position inside the feeding tray (224), an air inlet (313) is provided on one side of the bottom end of the sealing groove (312), and an air outlet (314) is provided on the other side of the bottom end of the sealing groove (312). An air pipe (311) is embedded and installed at the position of the bottom end of the top seat (103) corresponding to the air inlet (313), and both sides of the inner cavity of the strip box (307) are connected to the air pipe (311). A driving wheel (315) is embedded and installed at the top end of the sealing groove (312), and the outer curved surface of the driving wheel (315) is connected to the inner wall of the feeding tray (224), and a guide box (316) is installed at the top end of the driving wheel (315), and a shaft (317) is installed in the middle of the bottom end of the guide box (316), and the end of the shaft (317) is connected to the receiving tray (225); The outer curved surface of the shaft rod (317) is provided with a strip groove (318) at a position inside the support tube (102), the top of the shaft rod (317) is provided with a guide hole (319), the bottom of the top seat (103) is embedded with an air supply pipe (320) at a position corresponding to the air outlet (314), and the end of the air supply pipe (320) is connected to the inner cavity of the support tube (102), the outer curved surface of the shaft rod (317) is provided with an exhaust seat (321) at a position corresponding to the top of the receiving plate (225), the outer curved surface of the exhaust seat (321) is provided with a plurality of exhaust ports (322) at equal angles in the circumferential direction, and the outer curved surface of the guide box (316) is provided with a plurality of exhaust grooves (323) at equal angles in the circumferential direction; A sliding rod (324) is installed in the middle of the side end surface of the blocking block (308), and the sliding rod (324) is slidably connected to the strip box (307). An elastic plate (325) is installed at the end of the sliding rod (324), and a switch (326) is embedded and installed at the top of the side end surface of the strip box (307) corresponding to the position of the elastic plate (325).

7. The intelligent screening device for nut and screw production according to claim 6, characterized in that: The partition rib (309) divides the strip box (307) into a circulation chamber (3071) and a pressure relief chamber (3072); the air outlet valve (306) is connected to the air delivery pipe (311) through the circulation chamber (3071); the exhaust valve (310) is connected to the circulation chamber (3071) through the pressure relief chamber (3072); the inner diameter of the exhaust valve (310) is smaller than the width of the block (308); the distance between the exhaust valve (310) and the partition rib (309) is half the width of the block (308); an extension tube (3073) is installed in the middle of the bottom end of the strip box (307); a pressure regulating valve (3074) is embedded and installed on the side end surface of the side support (107) located at the bottom of the motor (303); and the end of the extension tube (3073) is connected to the pressure regulating valve (3074).

8. The intelligent screening equipment for nut and screw production according to claim 6, characterized in that: The inclination angle of the exhaust groove (323) is the same as the top slope of the feeding tray (224), the inclination angle of the exhaust port (322) is the same as the top slope of the receiving tray (225), the inner cavities of the guide box (316) and the exhaust seat (321) are both connected to the strip groove (318) through the guide hole (319), and the inner diameter of the support tube (102) is greater than the outer diameter of the shaft rod (317).

9. The intelligent screening device for nut and screw production according to claim 6, characterized in that: The elastic plate (325) can slide a distance equal to the width of the block (308); the switch (326) is a synchronous control switch of the motor (303) and the external alarm; the input end of the motor (303) is electrically connected to the output end of the switch (326); and the input end of the switch (326) is electrically connected to the output end of the external power supply.

10. The intelligent screening device for nut and screw production according to claim 6, characterized in that: A filter box (3271) is installed at the end of the air intake valve (327), and the interior of the filter box (3271) is filled with filter media in sequence. A plurality of deflection grooves (3151) are provided at equal angles along the circumferential direction at the bottom end of the driving wheel (315), and the toothed disc (304) is a half gear.

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