CN117259183A - A automatic screening plant for intelligent manufacturing - Google Patents

Abstract

The invention relates to an automatic screening device, in particular to an automatic screening device for intelligent manufacturing. It is necessary to design an automatic screening device for intelligent manufacture, which can timely discharge screened massive materials to prevent blockage and improve screening effect. An automatic screening device for intelligent manufacturing comprises a screening box, a supporting frame, a feeding pipe and the like, wherein the supporting frame is fixedly connected between the lower parts of the left side surface and the right side surface outside the screening box, and the feeding pipe is fixedly connected to the rear side of the top of the screening box in a penetrating manner. According to the invention, the servo motor is started to enable the sieving plate to continuously move forwards and backwards, the positioning belt assembly is positively rotated to drive the brush frame to be continuously contacted with the sieving plate through the moving rod, then materials are poured into the feeding pipe and fall onto the sieving plate, the sieving plate is moved forwards and backwards to sieve the materials, the large materials are left on the sieving plate, and the brush frame is positively rotated to push the large materials forwards to be discharged and collected, so that the large materials can be discharged and collected to prevent blockage, and the sieving effect is improved.

Description

A automatic screening plant for intelligent manufacturing

Technical Field

The invention relates to an automatic screening device, in particular to an automatic screening device for intelligent manufacturing.

Background

The intelligent manufacturing is a man-machine integrated intelligent system which is composed of intelligent machines and human experts, intelligent activities can be carried out in the manufacturing process, the concept of manufacturing automation is expanded to flexibility, intelligence and high integration, and in the intelligent manufacturing, the screening of materials is indispensable because of the different sizes of the materials.

The chinese patent with publication No. CN216757206U discloses an intelligent manufacturing automatic screening device, including shell body, support frame one, support frame two, regulation structure, bearing structure and revolution mechanic, the shell body is cylindric structure, support frame one sets up on the shell body right side, support frame two sets up in the left side of shell body, the top fixed connection solid fixed ring of support frame one and support frame two, gu fixed ring's inside fixed connection unloading pipe, be provided with regulation structure on the unloading pipe, above-mentioned patent is nevertheless can carry out the screening to the material, but the unable timely discharge of big piece material of screening out, along with the volume of screening is more and more, causes the effect of jam influence screening easily.

The invention aims to solve the problems in the above patent, and therefore, provides an automatic screening device for intelligent manufacturing, which can timely discharge screened massive materials to prevent blockage and improve screening effect.

Disclosure of Invention

In order to overcome the defect that the screened massive materials cannot be timely discharged although the materials can be screened, and the effect of screening is easily affected by blockage along with the increasing screening amount, the invention provides an automatic screening device for intelligent manufacturing, which can timely discharge the screened massive materials to prevent blockage and improve the screening effect.

The invention is realized by the following technical approaches:

the utility model provides an automatic screening plant for intelligent manufacturing, including screening case, the support frame, the inlet pipe, the locating frame and screening plate, the rigid coupling has the support frame between the outer left and right sides face lower part of screening case, screening case top rear side fixed cross-under has the inlet pipe, screening case inboard lower part rigid coupling has the locating frame, the inboard sliding connection of locating frame has the screening plate that is used for sieving the material, screening plate sets up for the slope, still including vibration mechanism and brush material mechanism, be provided with on the screening case and be used for driving the vibration mechanism who crosses the screen plate back-and-forth movement, screening case inboard is provided with the brush material mechanism that is used for the bulk material promotion with the screening out.

Further stated, the vibration mechanism comprises a servo motor, a driving shaft, a cam, a contact rod and first springs, four first springs are connected between the rear side surface of the screening plate and the inner rear side surface of the positioning frame at equal intervals, the contact rod is fixedly connected with the rear side of the bottom of the screening plate in a bilateral symmetry manner, the driving shaft is connected between the lower rear sides of the left side and the right side of the screening box in a penetrating manner in a rotating manner, the cam used for driving the contact rod to move backwards is fixedly sleeved on the driving shaft in a bilateral symmetry manner, the cam is in contact with the contact rod, the servo motor is fixedly connected with the rear lower side of the left side surface of the outer side of the screening box, and an output shaft of the servo motor is fixedly connected with the left end of the driving shaft.

Further stated, the brushing mechanism comprises a reduction gear assembly, a transmission shaft, a positioning belt assembly, a movable rod, a brush frame, a second spring and a rotating shaft, wherein the rotating shafts are rotatably connected between the front sides and the rear sides of the left side and the right side of the screening box in a penetrating way, the positioning belt assembly is symmetrically connected between the front side and the rear side of the rotating shafts, the movable rod is fixedly connected between the positioning belt assemblies on the left side and the right side, the brush frame for pushing a large block of materials is slidably connected on the movable rod in a penetrating way, the brush frame is contacted with a screening plate, four second springs are uniformly arranged between the top of the brush frame and the top of the movable rod at intervals, the transmission shaft is rotatably connected in the middle of the rear side of the outer right side of the screening box, the transmission shaft is driven by a synchronous belt assembly between the left side of the transmission shaft and the right side of the front side of the transmission shaft, and the middle of the transmission shaft is connected with the reduction gear assembly.

Further described, the device also comprises a blocking mechanism for blocking the material at intervals.

Further stated, the material blocking mechanism comprises a material blocking plate, a convex plate, a movable frame, a third spring, a hinge rod and a first positioning seat, wherein the material blocking plate for blocking materials at intervals is fixedly connected to the left end of the material blocking plate at the front and the rear sides in a penetrating manner, the movable frame is fixedly connected to the middle part of the left side of the screening box in a penetrating manner, the convex plate is fixedly connected to the three top ends of the movable frame, the movable rod positively rotates to be in contact with the convex plate, the hinge rod for driving the first positioning seat to swing downwards is symmetrically connected to the front and the rear bottoms of the movable frame in a rotating manner, the tops of the hinge rods at the front and the rear sides are respectively connected to the tops of the first positioning seats at the front and the rear sides in a rotating manner, and four third springs are connected to the bottom of the movable frame and the outer left side of the screening box at uniform intervals.

Further described, the device also comprises a spacing feeding mechanism for enabling the materials to fall at intervals.

Further stated, interval pan feeding mechanism is including interval pan feeding pipe, the fourth spring, the second positioning seat, the synchronous connecting rod, third positioning seat and arc guide arm, rotatory cross-under has interval pan feeding pipe that is used for driving the material interval to drop between the middle part of inlet pipe left and right sides, inlet pipe lateral surface middle part rigid coupling has the arc guide arm that is used for carrying out the direction to interval pan feeding pipe, arc guide arm and interval pan feeding pipe left side sliding connection, be connected with the fourth spring between arc guide arm lower part and the interval pan feeding pipe left side, interval pan feeding pipe right-hand member rigid coupling has the second positioning seat, second positioning seat top rotation is connected with the synchronous connecting rod, the transmission shaft right-hand member rigid coupling has the third positioning seat that is used for driving synchronous connecting rod reciprocates, third positioning seat top and synchronous connecting rod bottom rotation are connected.

Further, the screening box further comprises a material guide plate and mounting rods, two mounting rods are fixedly connected between the rear sides of the upper parts of the left side surface and the right side surface in the screening box, a material guide plate used for guiding materials is fixedly connected between the two mounting rods, the material guide plate is obliquely arranged, and the material guide plate is located below the feeding pipe.

Further description, still include the cloth cover, the discharge end of both sides all is connected with the cloth cover that is used for blocking the dust that will appear around the screening case.

Further stated, the screening box also comprises an observation window, and the upper part of the front side surface of the screening box is fixedly connected with the observation window in a penetrating way.

The invention has the remarkable advantages that:

1. the servo motor is started to enable the sieving plate to continuously move forwards and backwards, the positioning belt assembly positively rotates to drive the brush frame to positively rotate to continuously contact with the sieving plate through the moving rod, materials are poured into the feeding pipe and fall onto the sieving plate, the sieving plate moves forwards and backwards to sieve the materials, the large materials are left on the sieving plate, the brush frame positively rotates to push the large materials to be discharged and collected forwards, and the large materials can be discharged and collected to prevent blockage, so that the sieving effect is improved.

2. Under the effect of blocking material mechanism, whenever the material drops to the screen plate, blocking material mechanism operation can block the material with the long-time contact of screen plate, then do not block the material again, can prevent that the material from being too short with the time of screen plate contact can not fully be sieved to improve the screening effect to the material.

3. Under the effect of interval pan feeding mechanism, whenever the material falls into in the inlet pipe, interval pan feeding mechanism function can make the material interval drop by the screening board screening, can prevent that a large amount of materials from dropping to be difficult to by the screening on the screening board to further improvement is to the screening effect of material.

Drawings

Fig. 1 is a schematic perspective view of a first view of the present invention.

Fig. 2 is a schematic perspective view of a second view of the present invention.

Fig. 3 is a schematic perspective view of a vibration mechanism and a brushing mechanism according to the present invention.

Fig. 4 is a schematic perspective view of a vibration mechanism according to the present invention.

Fig. 5 is a schematic perspective view of a brushing mechanism according to the present invention.

FIG. 6 is an enlarged schematic view of section A of the present invention.

Fig. 7 is a schematic perspective view of a material blocking mechanism and a spacing feeding mechanism according to the present invention.

Fig. 8 is a schematic perspective view of a material blocking mechanism according to the present invention.

Fig. 9 is a schematic perspective view of a space feeding mechanism according to the present invention.

Fig. 10 is a schematic perspective view of a material guiding plate and a cloth cover according to the present invention.

Meaning of reference numerals in the drawings: 1. screening box, 2, support frame, 21, observation window, 3, inlet pipe, 4, locating frame, 5, screening board, 6, vibration mechanism, 61, servo motor, 62, drive shaft, 63, cam, 64, contact lever, 65, first spring, 7, brush material mechanism, 71, reduction gear assembly, 72, transmission shaft, 73, locating belt assembly, 74, movable lever, 75, brush frame, 76, second spring, 77, rotation shaft, 8, material blocking mechanism, 81, material blocking board, 82, convex plate, 83, movable frame, 84, third spring, 85, hinge lever, 86, first positioning seat, 9, interval material feeding mechanism, 91, interval material feeding pipe, 92, fourth spring, 93, second positioning seat, 94, synchronous connecting rod, 95, third positioning seat 96, arc guide rod, 10, material guiding board, 11, installation lever, 12, cloth cover.

Detailed Description

It should be noted that in the various embodiments described, identical components are provided with identical reference numerals or identical component names, wherein the disclosure contained throughout the description can be transferred in a meaning to identical components having identical reference numerals or identical component names. The position specification, upper, lower, lateral, etc. selected in the description are also referred to directly in the description and the figures shown and are transferred in the sense of a new position when the position is changed.

Example 1

An automatic screening plant for intelligent manufacturing, including screening case 1, support frame 2, observation window 21, inlet pipe 3, locating frame 4, screening board 5, vibration mechanism 6 and brush material mechanism 7, please see the illustration of fig. 1-6, install support frame 2 through bolted connection's mode between screening case 1 outside left and right sides face lower part, screening case 1 top rear side fixed cross-under has inlet pipe 3, screening case 1 front side upper portion fixed cross-under has observation window 21, locating frame 4 is installed through welded connection's mode in screening case 1 inboard lower part, locating frame 4 inboard sliding connection has screening board 5, when screen board 5 back-and-forth movement, screening board 5 can be realized sieving the material, screening board 5 is the slope setting, be provided with vibration mechanism 6 on screening case 1, vibration mechanism 6 function can be realized driving screen board 5 back-and-forth movement when vibration mechanism 6 functions, screening case 1 inboard is provided with brush material mechanism 7, when brush material mechanism 7 functions, brush material mechanism 7 can realize promoting the massive material that will screen out.

The vibration mechanism 6 comprises a servo motor 61, a driving shaft 62, a cam 63, a contact rod 64 and a first spring 65, as shown in fig. 3 and 4, four first springs 65 are uniformly and alternately connected between the rear side surface of the screen plate 5 and the inner rear side surface of the positioning frame 4, the contact rod 64 is symmetrically arranged on the rear side of the bottom of the screen plate 5 in a left-right manner through welding connection, the driving shaft 62 is rotatably connected between the lower rear sides of the left side and the right side of the screen box 1 in a penetrating manner, the cam 63 is fixedly sleeved on the driving shaft 62 in a left-right manner, the cam 63 is in contact with the contact rod 64, when the cam 63 rotates, the cam 63 can drive the contact rod 64 to move backwards, the servo motor 61 is arranged on the rear lower side of the outer left side surface of the screen box 1 in a bolt connection manner, and an output shaft of the servo motor 61 is fixedly connected with the left end of the driving shaft 62.

The brushing mechanism 7 comprises a reduction gear assembly 71, a transmission shaft 72, a positioning belt assembly 73, a moving rod 74, a brush holder 75, a second spring 76 and a rotating shaft 77, as shown in fig. 3, 5 and 6, the rotating shaft 77 is rotatably connected between the front side and the rear side of the screening box 1, the positioning belt assembly 73 is symmetrically connected between the front side and the rear side of the rotating shaft 77, the positioning belt assembly 73 is composed of two belt pulleys and a flat belt, the two belt pulleys are respectively fixedly sleeved on the front side and the rear side of the rotating shaft 77, the flat belt is wound between the two belt pulleys, the moving rod 74 is mounted between the left side and the right side of the positioning belt assembly 73 in a bolt connection mode, the brush holder 75 is connected with the screen plate 5 in a sliding mode, when the brush holder 75 rotates positively, the four second springs 76 are connected between the inner top of the brush holder 75 and the top of the moving rod 74, the middle of the rear side of the screening box 1 is rotatably connected with the transmission shaft 72 in a rotating manner, the left side and the right side of the driving shaft 72 are respectively fixedly sleeved on the front side and the rear side of the rotating shaft 77, the flat belt is wound between the two belt pulleys and the two belt pulleys, the left side and the right side of the driving shaft 72 are fixedly sleeved on the driving shaft 62, the middle of the transmission shaft is meshed with the small gear assembly 62, and the small gear assembly is fixedly sleeved on the middle of the transmission shaft is meshed with the small gear assembly, and the small gear assembly is meshed with the small gear assembly 62, and the small gear assembly is meshed with the small gear assembly 72.

Firstly, two collection containers are respectively placed under two discharging ends of a screening box 1, a servo motor 61 is started to reversely rotate to drive a driving shaft 62 to reversely rotate, the driving shaft 62 reversely rotates to drive a cam 63 to reversely rotate, when the cam 63 reversely rotates to enable the convex end to be in contact with a contact rod 64, the cam 63 drives the contact rod 64 to move backwards, the contact rod 64 moves backwards to drive a screening plate 5 to move backwards, a first spring 65 is compressed, when the cam 63 continuously reversely rotates to enable the convex end to be out of contact with the contact rod 64, the screening plate 5 moves forwards to reset to drive the contact rod 64 to move forwards under the action of the first spring 65, so that the screening plate 5 can continuously move forwards and backwards, meanwhile, the driving shaft 62 reversely rotates to drive a transmission shaft 72 to rotate forwards through a reduction gear assembly 71, the transmission shaft 72 positively rotates forwards through a synchronous belt assembly to drive a front side rotation shaft 77, the front side rotation shaft 77 positively rotates forwards through a rear side rotation shaft 77 to drive a positioning belt assembly 73, the positioning belt assembly 73 positively rotates to drive the moving rod 74 positively, the moving rod 74 positively rotates to drive the brush frame 75 positively, the brush frame 75 continuously contacts with the sieving plate 5 positively, then the material is poured into the feeding pipe 3, the material in the feeding pipe 3 falls onto the sieving plate 5, the sieving plate 5 moves forwards and backwards to shake and sieve the material, the qualified material passes through the sieving plate 5 and falls into the lower part of the inner side of the sieving box 1, the qualified material is discharged through the discharging end of the rear side of the sieving box 1 and falls into the rear side collecting container, the unqualified bulk material is left on the sieving plate 5, when the brush frame 75 positively rotates to contact with the sieving plate 5, the bulk material on the sieving plate 5 is pushed forwards, the pushed material is discharged through the discharging end of the front side of the sieving box 1, the discharged material falls into the front side collecting container, because of the effect of the second spring 76, the brush holder 75 can closely push the massive materials in contact with the sieving plate 5, and the materials can be continuously and automatically sieved, and the massive materials can be discharged and collected to prevent blockage, so that the sieving effect is improved, and the sieving condition of the materials can be clearly seen through the effect of the observation window 21. After the materials are completely screened, the servo motor 61 is turned off, the screening plate 5 stops moving back and forth, the positioning belt assembly 73 stops driving the brush frame 75 to rotate forward through the moving rod 74, and the two collecting containers are taken up to carry out subsequent treatment on the bulk materials and qualified materials.

Example 2

On the basis of embodiment 1, still include and hinder material mechanism 8, hinder material mechanism 8 is including hinder the flitch 81, protruding board 82, movable frame 83, third spring 84, articulated lever 85 and first positioning seat 86, please see the fig. 7 and 8 and show, the cross-under that symmetry rotated around between the upper portion of screening case 1 left and right sides has hinder the flitch 81, when the material drops on sieving board 5, hinder the flitch 81 and can realize blockking the material interval, first positioning seat 86 is installed through welded connection's mode in front and back both sides hinder flitch 81 left end, the cross-under of screening case 1 left side middle part sliding has movable frame 83, all rigid coupling has protruding board 82 on the three top of movable frame 83, movable lever 74 corotation and protruding board 82 contact, the articulated lever 85 is connected with in the front and back symmetry rotation of movable frame 83 bottom, the articulated lever 85 top is connected with the top rotation in front and back both sides first positioning seat 86 respectively, when articulated lever 85 moves down, articulated lever 85 can realize driving first positioning seat 86 to swing down, the cross-under the mode is provided with the movable frame 83 bottom and the first positioning seat 86, evenly has four spring 84 to have between the outside of evenly to have between the left and right side outside of screening case 1 to have between the movable frame 83.

The feeding mechanism 9 comprises a feeding pipe 91, a fourth spring 92, a second positioning seat 93, a synchronous connecting rod 94, a third positioning seat 95 and an arc-shaped guide rod 96, as shown in fig. 7 and 9, the feeding pipe 91 is rotatably connected between the middle parts of the left side and the right side of the feeding pipe 3 in a penetrating manner, when the feeding pipe 91 rotates positively and negatively, the feeding pipe 91 can drive materials to fall off in a spaced manner, the arc-shaped guide rod 96 is fixedly connected with the middle part of the left side surface of the feeding pipe 3, the arc-shaped guide rod 96 is slidably connected with the left side of the feeding pipe 91, when the feeding pipe 91 rotates positively and negatively, the arc-shaped guide rod 96 can guide the feeding pipe 91, the fourth spring 92 is connected between the lower part of the arc-shaped guide rod 96 and the left side of the feeding pipe 91, the right end of the feeding pipe 91 is fixedly connected with the second positioning seat 93, the synchronous connecting rod 94 is rotatably connected to the top end of the second positioning seat 93, the right end of the transmission shaft 72 is fixedly connected with the third positioning seat 95, the top end of the third positioning seat 95 is rotatably connected with the bottom end of the synchronous connecting rod 94, and when the third positioning seat 95 rotates positively and rotatably, the third positioning seat 95 can drive the upper and lower synchronous connecting rod 94.

When the servo motor 61 starts to rotate reversely, the moving rod 74 rotates positively to drive the brush holder 75 to rotate positively, and simultaneously, when the moving rod 74 rotates positively to contact with the convex plate 82, the moving rod 74 drives the convex plate 82 to move downwards, the convex plate 82 moves downwards to drive the movable frame 83 to move downwards, the third spring 84 is stretched, the movable frame 83 moves downwards to drive the hinged rod 85 to move downwards, the hinged rod 85 moves downwards to drive the first positioning seat 86 to swing downwards, the first positioning seat 86 swings downwards to drive the material blocking plate 81 to swing upwards, when the moving rod 74 continues to rotate positively to be in contact with the convex plate 82, the movable frame 83 moves upwards to drive the convex plate 82 to move upwards to reset due to the action of the third spring 84, the movable frame 83 also drives the first positioning seat 86 to swing upwards to reset, the first positioning seat 86 swings upwards to reset, so repeatedly, and when the material drops onto the sieving plate 5, the material is contacted with the material blocking plate 81 to be blocked, the material blocking plate 81 is contacted with the sieving plate 5 to be blocked, and the material is not blocked from rolling upwards when the material blocking plate 81 is blocked. When the screening of the material is completed, the servo motor 61 is turned off, the moving rod 74 stops driving the forward rotation, the moving rod 74 stops driving the convex plate 82 to move downwards, and the material blocking plate 81 stops swinging. Thus, the contact time of the material and the sieving plate 5 is prevented from being too short to be sufficiently sieved, and the sieving effect on the material is improved.

When the servo motor 61 is started, the transmission shaft 72 rotates forward to drive the third positioning seat 95 to rotate forward, the third positioning seat 95 rotates forward to drive the synchronous connecting rod 94 to move up and down, the synchronous connecting rod 94 moves up and down to drive the second positioning seat 93 to swing up and down, the second positioning seat 93 swings up and down to drive the interval feeding pipe 91 to rotate in a positive-negative alternating mode, the fourth spring 92 stretches continuously, when materials are poured into the feeding pipe 3, the materials are blocked by contact with the interval feeding pipe 91, when the interval feeding pipe 91 is communicated with the feeding pipe 3 in a reverse mode, the interval feeding pipe 91 does not block the materials, the materials pass through the interval feeding pipe 91 to be discharged from the feeding pipe 3 and screened by the screening plate 5, and then when the interval feeding pipe 91 rotates forward to reset, the interval feeding pipe 91 blocks the materials, and the materials fall onto the screening plate 5 at intervals and are screened. When the servo motor 61 is turned off, the transmission shaft 72 stops driving the third positioning seat 95 to rotate forward, the third positioning seat 95 stops driving the second positioning seat 93 to swing up and down through the synchronous connecting rod 94, and the second positioning seat 93 stops driving the interval feeding pipe 91 to rotate forward and backward alternately. Thus, a large amount of materials can be prevented from falling onto the screening plate 5 and being difficult to screen, and the screening effect on the materials is further improved.

Example 3

On the basis of embodiment 1 and embodiment 2, still include stock guide 10 and installation pole 11, please see the fig. 10 and show, install two installation poles 11 through welded connection's mode between the upper portion rear side of the left and right sides in the screening case 1, the rigid coupling has stock guide 10 between two installation poles 11, stock guide 10 is the slope setting, stock guide 10 is located inlet pipe 3 below, when the material drops to stock guide 10, stock guide 10 can realize leading the material.

The screening box 1 further comprises a cloth cover 12, as shown in fig. 10, the cloth covers 12 are connected to the discharge ends of the front side and the rear side of the screening box 1, and when materials are discharged into the cloth cover 12, the cloth cover 12 can block dust.

When the material is discharged from the feed pipe 3, the material falls onto the guide plate 10, the guide plate 10 guides the material, the guided material falls to the rear side of the top of the sieving plate 5, and then the material rolls forward to be sieved by the sieving plate 5. In this way, the material can be fully contacted with the sieving plate 5, so that the material can be fully sieved.

When qualified materials are discharged from the discharge end at the rear side of the screening box 1, the qualified materials are discharged into the rear side cloth cover 12, the materials in the rear side cloth cover 12 are discharged and fall into the rear side collecting container, and large materials are discharged into the front cloth cover 12 from the discharge end in front of the screening box 1, the large materials in the front side cloth cover 12 are discharged and fall into the front side collecting container, and the cloth cover 12 shields dust appearing in the discharged materials. Thus, dust can be prevented from flying around to influence the environment, and the clean and tidy surrounding environment is ensured.

Finally, it is necessary to state that: the foregoing is provided to assist in understanding the technical solutions of the present invention, and is not to be construed as limiting the scope of protection of the present invention; insubstantial modifications and variations from the above teachings are within the scope of the invention as claimed.

Claims (10)

1. The utility model provides an automatic screening plant for intelligent manufacturing, including screening case (1), support frame (2), inlet pipe (3), locating frame (4) and screening board (5), the rigid coupling has support frame (2) between screening case (1) outer left and right sides face lower part, screening case (1) top rear side fixed cross-under has inlet pipe (3), screening case (1) inboard lower part rigid coupling has locating frame (4), locating frame (4) inboard sliding connection has screening board (5) that are used for sieving the material, screening board (5) are the slope setting, a serial communication port, still including vibration mechanism (6) and brush material mechanism (7), be provided with on screening case (1) and be used for driving vibration mechanism (6) that cross screen board (5) back and forth moved, screening case (1) inboard is provided with and is used for the brush material mechanism (7) that promote the big material that will sieve out.

2. An automatic screening device for intelligent manufacturing according to claim 1, wherein the vibration mechanism (6) comprises a servo motor (61), a driving shaft (62), a cam (63), a contact rod (64) and a first spring (65), four first springs (65) are uniformly and alternately connected between the rear side surface of the screening plate (5) and the inner rear side surface of the positioning frame (4), the contact rod (64) is fixedly connected on the left and right sides of the bottom of the screening plate (5) in a bilateral symmetry manner, the driving shaft (62) is rotatably connected between the lower rear sides of the left and right sides of the screening box (1) in a penetrating manner, a cam (63) for driving the contact rod (64) to move backwards is fixedly sleeved on the driving shaft (62), the cam (63) is in contact with the contact rod (64), the servo motor (61) is fixedly connected on the rear lower side of the outer left side surface of the screening box (1), and the output shaft of the servo motor (61) is fixedly connected with the left end of the driving shaft (62).

3. An automatic screening device for intelligent manufacturing according to claim 2, wherein the brushing mechanism (7) comprises a reduction gear assembly (71), a transmission shaft (72), a positioning belt assembly (73), a moving rod (74), a brush frame (75), a second spring (76) and a rotating shaft (77), wherein the rotating shaft (77) is rotatably connected between the front side and the rear side of the screening box (1), the positioning belt assembly (73) is symmetrically connected between the front side and the rear side of the rotating shaft (77), the moving rod (74) is fixedly connected between the positioning belt assembly (73) on the left side and the right side, the brush frame (75) for pushing a large block of materials is connected between the moving rod (74) in a sliding mode, the brush frame (75) is in contact with the screening plate (5), four second springs (76) are uniformly spaced between the inner top of the brush frame (75) and the top of the moving rod (74), the transmission shaft (72) is rotatably connected between the middle of the rear side of the outer right side of the screening box (1), and the middle part of the transmission shaft (72) is connected with the transmission shaft (72) through a synchronous gear assembly (62) between the left side and the right side of the rotating shaft (77).

4. An automatic screening device for intelligent manufacturing according to claim 3, further comprising a blocking mechanism (8) for blocking the material gap.

5. The automatic screening device for intelligent manufacturing according to claim 4, wherein the material blocking mechanism (8) comprises a material blocking plate (81), a convex plate (82), a movable frame (83), a third spring (84), a hinge rod (85) and a first positioning seat (86), the material blocking plate (81) for blocking the material interval is connected between the upper parts of the left side and the right side of the screening box (1) in a penetrating way in a front-back symmetrical rotating way, the first positioning seat (86) is fixedly connected with the left end of the material blocking plate (81) on the front side and the rear side, the movable frame (83) is connected with the middle part of the screening box (1) in a sliding way in a penetrating way, the convex plate (82) is fixedly connected with the three top ends of the movable frame (83), the movable rod (74) positively rotates to be in contact with the convex plate (82), the hinge rod (85) for driving the first positioning seat (86) to swing downwards is connected with the top ends of the first positioning seat (86) on the front side and the rear side in a rotating way, and the bottom of the movable frame (83) is uniformly connected with the fourth spring (84) on the outer side of the screening box (1) in a front-rear side.

6. An automatic screening apparatus for intelligent manufacturing according to claim 5, further comprising a gap feeding mechanism (9) for allowing material to fall off at intervals.

7. The automatic screening device for intelligent manufacturing according to claim 6, wherein the interval feeding mechanism (9) comprises an interval feeding pipe (91), a fourth spring (92), a second positioning seat (93), a synchronous connecting rod (94), a third positioning seat (95) and an arc guide rod (96), the interval feeding pipe (91) for driving materials to fall at intervals is rotationally connected between the middle parts of the left side and the right side of the feeding pipe (3), the arc guide rod (96) for guiding the interval feeding pipe (91) is fixedly connected in the middle part of the outer left side surface of the feeding pipe (3), the arc guide rod (96) is connected with the left side of the interval feeding pipe (91) in a sliding mode, the fourth spring (92) is connected between the lower part of the arc guide rod (96) and the left side of the interval feeding pipe (91), the right end of the interval feeding pipe (91) is fixedly connected with the second positioning seat (93), the top end of the second positioning seat (93) is rotationally connected with the synchronous connecting rod (94), the right end of the transmission shaft (72) is fixedly connected with the third positioning seat (95) for driving the synchronous connecting rod (94) to move up and down, and the top end of the third positioning seat (95) is rotationally connected with the synchronous connecting rod (94).

8. The automatic screening device for intelligent manufacturing according to claim 7, further comprising a material guiding plate (10) and mounting rods (11), wherein two mounting rods (11) are fixedly connected between the upper rear sides of the left side surface and the right side surface in the screening box (1), a material guiding plate (10) for guiding materials is fixedly connected between the two mounting rods (11), the material guiding plate (10) is obliquely arranged, and the material guiding plate (10) is positioned below the feeding pipe (3).

9. An automatic screening device for intelligent manufacturing according to claim 8, further comprising a cloth cover (12), wherein the discharge ends of the screening box (1) on both front and rear sides are connected with cloth covers (12) for blocking dust to be present.

10. An automatic screening device for intelligent manufacturing according to claim 9, further comprising an observation window (21), wherein the observation window (21) is fixedly connected to the upper part of the front side of the screening box (1).