Material screening device

Abstract

The embodiment of the invention provides a material screening device. The material screening device comprises a feeding track; the fixed seat is arranged outside one side of the feeding track; the screening assembly comprises two screening components arranged outside the two sides of the feeding rail correspondingly. And the screening driving mechanism is arranged on the fixed seat and is used for driving the two screening components to synchronously rotate and enabling the two screening components to synchronously swing up and down relative to the feeding track so as to block materials with staggered postures on the feeding track and enable the materials to be separated from the feeding track. The material screening device is low in energy consumption, simple in structure, stable and reliable in performance and high in screening success rate, the clamping stagnation risk is reduced, and the equipment nail feeding rate is increased.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of screening, and particularly relates to a material screening device. BACKGROUND

[0002] In the automatic feeding technology, the key technical point lies in the screening of the material with correct posture and the exclusion of the material with incorrect posture. When the material advances on the straight vibration track and enters the customized track from the disordered state, part of the material has the posture matching the track and consistent with the preset material posture, and this part of the material is the material with correct posture and needs to be reserved and conveyed to the required place; part of the material has the posture different from the set posture and cannot enter the track, and this part of the material is the material with incorrect posture and needs to be separated and excluded by the separation technology. If the material with incorrect posture cannot be timely excluded, the material will be stuck, thereby causing shutdown and removal.

[0003] There are two kinds of technologies for excluding the material with incorrect posture in the prior art, the first kind is blowing, and the second kind is physical screening. As for the blowing screening, several blowing holes are installed beside the track, the blowing holes continuously blow air, the material with incorrect posture is blown off and excluded to the return system and returned to the bin. The material with correct posture will not be blown off in the track. Since the blowing holes need to continuously blow air during the continuous feeding of the equipment, the user needs to provide continuous air source to maintain the normal operation of the equipment, the operation cost of the equipment is high, and the carbon emission is also high. As for the physical screening, various mechanisms are made on the track according to the appearance characteristics of the material by using sheet metal and welding technology to correct or screen the posture of the material. In this process, skilled technicians need to continuously correct, weld and polish according to personal experience, and the equipment is made by pure manual work, the consistency of the equipment is poor, and the performance is unstable. SUMMARY

[0004] In view of the above problems existing in the prior art, the purpose of the embodiments of the application is to provide a material screening device.

[0005] The technical scheme adopted by the embodiments of the application is that a material screening device comprises: a feeding track; a fixed seat arranged on one side of the feeding track; a screening assembly comprising two screening members arranged on the two sides of the feeding track respectively; a screening driving mechanism arranged on the fixed seat, used for driving the two screening members to rotate synchronously and making the two screening members swing up and down synchronously relative to the feeding track, so as to block the material with incorrect posture on the feeding track and make it separate from the feeding track.

[0006] In an optional embodiment, the screening driving mechanism comprises a power component and a transmission assembly, the power component comprises a cylinder; the transmission assembly comprises a connecting rod and a rotating shaft, the rotating shaft is perpendicular to and fixedly connected with the connecting rod, a piston rod of the cylinder is rotatably connected with the connecting rod, the cylinder is used to drive the connecting rod to swing with the axis of the rotating shaft as the rotation center, and the connecting rod drives the rotating shaft to rotate when swinging. Both of the screening members are fixed on the rotating shaft and swing synchronously with the rotating shaft.

[0007] In an optional embodiment, the transmission assembly further comprises a turning joint, the turning joint is fixed on the piston rod and moves synchronously with the piston rod, the turning joint is provided with a convex shaft, the connecting rod is provided with a shaft hole, the convex shaft is arranged in the shaft hole, and the turning joint moves in extension and retraction with the piston rod, the convex shaft drives the connecting rod to swing with the axis of the rotating shaft as the rotation center, and the convex shaft rotates in the shaft hole.

[0008] In an optional embodiment, the fixed seat is provided with a through hole, the through hole is provided with a shaft seat, the rotating shaft passes through the shaft seat and is rotatably connected with the shaft seat through a bearing, a first end of the rotating shaft extends out of the fixed seat and is fixedly connected with a first end of the connecting rod, a second end of the rotating shaft extends out of the fixed seat and extends above the feeding track, and both of the screening members are fixed on the second end of the rotating shaft.

[0009] In an optional embodiment, both of the screening members are identical in structure, are reduced in size from the first end to the second end, and are bent into hooks to form screening hooks, the first end of the screening hook is fixed with the second end of the rotating shaft, and the second end of the screening hook is below the upper end surface of the feeding track.

[0010] In an optional embodiment, the material screening device further comprises a plurality of spacers, the plurality of spacers are arranged on the rotating shaft in different combinations and between the two screening members, and are used to adjust the distance between the two screening members to match the width of the feeding track.

[0011] In an optional embodiment, the material screening device further comprises a base, the fixed seat is arranged on the base, a spacer sleeve is arranged between the fixed seat and the base, different heights of the spacer sleeve are replaced to adjust the distance height between the fixed seat and the base, and then the distance between the spacer and the feeding track is adjusted, so that the material with correct posture can pass through and the material with incorrect posture is blocked.

[0012] In an optional embodiment, the fixed seat is provided with a rotating shaft. The material screening device further comprises a cylinder seat, the cylinder seat is provided with an assembly hole, the cylinder seat is assembled on the rotating shaft through the assembly hole and can rotate relative to the rotating shaft; The cylinder is fixed on the cylinder seat so that the cylinder can rotate together with the fixed seat relative to the rotating shaft when working.

[0013] In an optional embodiment, the upper end surface of the feeding track gradually decreases along the feeding direction, so that the material with correct posture entering the feeding track can be automatically conveyed downstream to the required place under the action of its own gravity; and / or The upper end surface of the feeding track near one side of the track groove is chamfered respectively to reduce the contact area of the head of the material with the feeding track.

[0014] In an optional embodiment, the feeding track is divided into a first part located upstream and a second part located downstream along the feeding direction, the second part is fixed relative to the fixed seat, the first part can be lifted and lowered relative to the second part, and the first part can release the material with posture misalignment falling on the feeding track to the hopper when being lowered to the lowest position. The combined end surface of the first part and the second part is a plane or a concave-convex surface, and when the first part is raised to the highest position, the upper end surface of the first part is coplanar with the upper end surface of the second part, and the combined end surface of the first part is consistent with the combined end surface of the second part.

[0015] In an optional embodiment, the material screening device further comprises a protective cover, the protective cover is connected with the fixed seat and covers the cylinder, the steering joint and the connecting rod; and / or The fixed seat is further provided with a proximity sensor for detecting the position of the connecting rod.

[0016] Compared with the prior art, the material screening device has the advantages that the mechanical physical screening is used to replace the air blowing screening in the prior art, the energy consumption is low, the structure is simple, the performance is stable and reliable, the screening success rate is high, the risk of jamming is reduced, the equipment nail rate is improved, the processing and maintenance are facilitated, the production cost of the equipment is reduced, and the use cost of the end customer is reduced.

[0017] It should be understood that the foregoing general description and the following detailed description are only exemplary and illustrative, but not for limiting the application.

[0018] The foregoing summary of various implementations or examples of the technology described in this application is not a comprehensive disclosure of the full scope or all features of the disclosed technology. BRIEF DESCRIPTION OF DRAWINGS

[0019] In the drawings, which are not necessarily drawn to scale, like numerals describe similar components throughout the several views. The drawings illustrate various embodiments by way of example and not by way of limitation. The same reference numbers in different drawings identify the same or similar elements.

[0020] Figure 1 and Figure 2 are respectively perspective structural schematic diagrams of the material screening device of the embodiment of the present application from different angles, wherein the feeding track is not shown.

[0021] Figure 3 is an exploded view of the material screening device of the embodiment of the present application.

[0022] Figure 4 is an exploded view of the cylinder, connecting rod, rotating shaft, fixed seat and shaft seat of the embodiment of the present application.

[0023] Figure 5 is a sectional view of the material screening device of the embodiment of the present application.

[0024] Figure 6 is a partial sectional view of the fixed seat and base of the material screening device of the embodiment of the present application.

[0025] Figure 7 is a structural schematic diagram of the material screening device of the embodiment of the present application when the cylinder is extended and the first part of the feeding track is lowered.

[0026] Figure 8 and Figure 9 are respectively structural schematic diagrams of the material screening device of the embodiment of the present application from different angles when the cylinder is extended and the feeding track is raised.

[0027] Figure 10 and Figure 11 are respectively structural schematic diagrams of the material screening device of the embodiment of the present application from different angles when the cylinder is retracted and the feeding track is raised.

[0028] Figure 12 is a structural schematic diagram of the material screening device of the embodiment of the present application in a material screening state.

[0029] Reference numerals: 1 - feeding track; 11 - first part; 12 - second part; 13 - track groove; 2 - fixed seat; 21 - through hole; 22 - connecting piece; 23 - rotating shaft; 24 - spacer sleeve; 3 - screening assembly; 31 - screening member; 32 - gasket; 4 - screening driving mechanism; 41 - cylinder; 411 - cylinder body; 412 - piston rod; 42 - connecting rod; 421 - shaft hole; 43 - rotating shaft; 44 - shaft seat; 441 - bearing; 45 - steering joint; 451 - convex shaft; 46 - cylinder seat; 461 - assembly hole; 5 - base; 6 - protective cover; 7 - proximity sensor; 8 - material with correct posture 9 - material with incorrect posture. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be described clearly and completely below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without any creative effort fall within the scope of protection of the present application.

[0031] Unless otherwise defined, technical or scientific terms used in the present application should be understood as having the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terms "first", "second", and similar terms used in the present application do not denote any order, quantity, or importance, but are used to distinguish different components. The terms "include" or "contain" and similar terms mean that the elements or objects before the terms encompass the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connected" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right", and the like are only used to represent relative positional relationships, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0032] In order to keep the following description of the embodiments of the present application clear and concise, the detailed description of known functions and known components is omitted.

[0033] The embodiments of the present application provide a material screening device for screening materials such as screws or bolts, etc. For the convenience of description, the embodiments of the present application take screws as an example to illustrate. Screws include both long-shaft screws and short-shaft screws.

[0034] As shown in Figures 1 to 12 The material screening device of the embodiments of the present application includes a feeding track 1, a fixed seat 2, a screening assembly 3, and a screening driving mechanism 4.

[0035] The fixed seat 2 is arranged outside one side of the feeding track 1. The screening assembly 3 includes two screening members 31, which are arranged outside opposite sides of the feeding track 1 respectively. The screening driving mechanism 4 is arranged on the fixed seat 2, used to drive the two screening members 31 to rotate synchronously, and make the two screening members 31 swing up and down synchronously relative to the feeding track 1, so as to block the materials with posture dislocation on the feeding track 1 and make them separate from the feeding track 1.

[0036] The material screening device of the embodiment of the application can screen and discharge the materials 9 with posture error from the feeding track 1 by arranging the screening members 31 driven by the screening driving mechanism 4 to swing up and down relative to the feeding track 1, so as to avoid the materials with posture dislocation from being stuck due to the failure of being correctly conveyed on the feeding track 1, and affect the continuous conveying of the subsequent materials and cause the shutdown. The structure is simple, the performance is stable, and the processing, manufacturing and maintenance are facilitated, the production cost of the equipment is reduced, and the use cost of the end user is reduced.

[0037] The specific structure of the screening driving mechanism 4 is not limited, as long as it can drive the two screening members 31 of the screening assembly 3 to swing up and down synchronously.

[0038] In some embodiments, as shown in Figures 1 to 4 The screening driving mechanism 4 includes a power component and a transmission assembly. The power component includes a cylinder 41. The transmission assembly includes a connecting rod 42 and a rotating shaft 43, which is perpendicular to and fixedly connected with the connecting rod 42. The cylinder 41 includes a cylinder body 411 and a piston rod 412, which is rotationally connected with the connecting rod 42. When the cylinder 41 is started, the connecting rod 42 is driven by the piston rod 412 to swing around the axis of the rotating shaft 43 as the rotation center, and the connecting rod 42 swings while driving the rotating shaft 43 to rotate. That is, the piston rod 412 pulls the connecting rod 42 to swing around the axis of the rotating shaft 43 in the extension and retraction process. The two screening members 31 are fixed on the rotating shaft 43 and rotate synchronously with the rotating shaft 43. Since the rotation of the screening members 31 is reciprocating rotation in the first direction and the second direction opposite to the first direction, and the rotation angle is small, the screening members 31 form a swing around the axis of the rotating shaft 43 as the rotation center. The linear reciprocating motion of the cylinder 41 is converted into the rotation of the rotating shaft 43 and the swing of the screening members 31 by the connecting rod 42, so that the screening members 31 can exclude the materials with posture dislocation from the feeding track 1, ensure the success rate of the materials entering the feeding track 1, and improve the nailing efficiency.

[0039] Further, continuing to combine Figures 1 to 4The transmission assembly further comprises a turning joint 45 fixed to the piston rod 412 and capable of synchronous telescopic movement with the piston rod 412. The turning joint 45 is provided with a convex shaft 451, and the connecting rod 42 is provided with a shaft hole 421, and the convex shaft 451 is arranged in the shaft hole 421. When the turning joint 45 telescopes with the piston rod 412, the convex shaft 451 pushes the connecting rod 42 to swing with the axis of the shaft 43 as the rotation center, and the convex shaft 451 rotates in the shaft hole 421. Through the turning joint 45, not only the rotation connection between the piston rod 412 and the connecting rod 42 is realized, but also the reciprocating linear motion of the piston rod 412 is converted into the swinging of the connecting rod 42.

[0040] In some embodiments, as shown in Figure 4 , the fixed seat 2 is provided with a through hole 21, and the through hole 21 is provided with a shaft seat 44, and the rotating shaft 43 passes through the shaft seat 44 and is rotationally connected with the shaft seat 44 through a bearing 441. The first end of the rotating shaft 43 extends out of the fixed seat 2 and is fixedly connected with the first end of the connecting rod 42, and the second end of the rotating shaft 43 extends out of the fixed seat 2 and extends above the feeding track 1, that is, the second end of the rotating shaft 43 spans over the feeding track 1. Both of the two screening members 31 are fixed to the second end of the rotating shaft 43, so that the upper ends of the two screening members 31 are both located above the upper end surface of the feeding track 1, and the lower ends of the two screening members 31 are both located below the upper end surface and extend to both sides of the feeding track 1, as shown in Figure 9 and Figure 11 . In this way, when the two screening members 31 swing upward under the driving of the rotating shaft 43, they can push the posture-misaligned materials that have not correctly entered the feeding track 1 upward to make them disengage from the feeding track 1, thereby ensuring the effective conveying of subsequent materials.

[0041] The specific structure of the two screening members 31 is not limited, as long as they can timely remove the posture-misaligned materials from the feeding track 1 during the up-and-down swinging. For example, the screening member 31 can be long-arm-shaped.

[0042] In order to improve the screening effect, as shown in Figure 3 , the two screening members 31 of the present application are identical in structure and are both tapered and curved like hooks from the first end to the second end to form screening hooks, the first end of the screening hook is fixed to the second end of the rotating shaft 43, and the second end of the screening hook is located below the upper end surface of the feeding track 1. The upper side of the screening hook is concave, and when it swings upward, it can effectively act on the posture-misaligned materials that have not correctly entered the track groove 13 of the feeding track 1 and throw the posture-misaligned materials obliquely upward to make them disengage from the feeding track 1.

[0043] In some embodiments, as shown in Figure 3As shown, the screening device further comprises a plurality of spacers 32, which can be arranged on the rotating shaft 43 in different combinations and between the two screening members 31, for adjusting the distance between the two screening members 31 to match the width of the feeding track 1. In this way, the two screening members 31 can be arranged as close as possible to the two sides of the feeding track 1, avoiding the material from being stuck in the gap between the feeding track 1 and the screening members 31.

[0044] The thicknesses of the plurality of spacers 32 can be the same or different. In order to reduce the number of spacers 32 and quickly adjust the distance between the two screening members 31 to match the width of the feeding track 1, one or more thick spacers 32 with relatively large thicknesses and one or more thin spacers 32 with relatively small thicknesses can be designed, and the other spacers 32 can have moderate thicknesses. In this way, the appropriate width range can be easily combined.

[0045] In some embodiments, as shown in Figure 3 and Figure 6 The screening device further comprises a base 5. The fixing seat 2 is arranged on the base 5, and a spacer 24 is arranged between the fixing seat 2 and the base 5. By selecting and replacing spacers 24 with different heights, the distance between the fixing seat 2 and the base 5 can be adjusted, and thus the distance between the spacers 32 and the feeding track 1 can be adjusted to match the thickness of the nail head of the material, ensuring that the material 8 with correct posture can pass smoothly, and the material 9 with incorrect posture is blocked.

[0046] For example, the fixing seat 2 is provided with two connecting holes penetrating through the opposite sides thereof, the connecting holes avoid the through hole 21, and the axes of the connecting holes are perpendicular to the axis of the through hole 21. That is, the fixing seat 2 is similar to a block, has opposite two surfaces, and the through hole 21 is located at an upper position in the middle of the fixing seat 2 and penetrates through the opposite two surfaces of the fixing seat 2. The two connecting holes respectively penetrate from the upper side of the fixing seat 2 to the lower side of the fixing seat 2 and are respectively located on the left and right sides of the through hole 21 to avoid the through hole 21. As shown in Figure 6As shown, two connecting holes are respectively provided with connecting members 22, which can be bolts or screws, the lower ends of which are connected to the threaded holes of the base 5. Two spacers 24 are respectively sleeved on the bolts or screws and located between the base 5 and the fixed seat 2. The outer diameters of the spacers 24 are respectively greater than the diameters of the connecting holes and the threaded holes, so that the two ends of the spacers 24 abut against the fixed seat 2 and the base 5 respectively. When the height of the spacers 24 changes, the height of the fixed seat 2 will change. Since the rotating shaft 43 is arranged on the fixed seat 2, when the height of the fixed seat 2 changes, the height of the rotating shaft 43 and the gasket 32 thereon will change, and thus the distance between the lower end of the gasket 32 and the upper end surface of the feeding track 1 changes. Therefore, by adjusting the height of the spacers 24, the distance between the lower end of the gasket 32 and the upper end surface of the feeding track 1 can be adjusted to be greater than the head of the screw and less than the maximum height of the screw in the upside-down state, so that the screw with correct posture can pass through, and the screw with incorrect posture cannot pass through.

[0047] Since the rotating shaft 43 is arranged on the fixed seat 2 through the shaft seat 44, the center of the rotating shaft 43 is kept stationary, and the connecting point of the steering joint 45 on the piston rod 412 and the connecting rod 42 is in motion, and the motion track thereof is a circular arc. Therefore, the cylinder body 411 of the air cylinder 41 will swing during the extension and retraction movement of the piston rod 412 thereof. In order to adapt to the swing of the cylinder body 411, the cylinder body 411 of the present application is movably connected with the fixed seat 2.

[0048] As shown in the drawings, Figure 5 The fixed seat 2 is provided with a rotating shaft 23. The material screening device further comprises a cylinder seat 46 provided with an assembly hole 461 (see Figure 4 The cylinder seat 46 is assembled on the rotating shaft 23 through the assembly hole 461 and can rotate relative to the rotating shaft 23. The air cylinder 41 is fixed on the cylinder seat 46, so that the air cylinder 41 can rotate (also referred to as swing) relative to the rotating shaft 23 when working.

[0049] In order to enable the material 8 with correct posture entering the feeding track 1 to be smoothly conveyed along the feeding track 1, the upper end surface of the feeding track 1 gradually descends along the feeding direction, so that the material automatically moves downstream to the required place under the action of its own gravity. In addition, the upper end surface of the feeding track 1 near one side of the track groove 13 is chamfered respectively, so as to reduce the contact area between the head of the material (screw) and the feeding track 1 and reduce the frictional resistance, which is beneficial to the sliding conveying of the material downstream.

[0050] In some embodiments, as Figure 7As shown, the feeding track 1 is divided into a first part 11 at the upstream and a second part 12 at the downstream along the feeding direction, the second part 12 is fixed relative to the fixed base 2, also called fixed part, and the first part 11 can be lifted relative to the second part 12, also called lifting part. The combined end faces of the first part 11 and the second part 12 are flat or concave-convex, when the first part 11 is lifted to the highest position, the upper end face of the first part 11 is flush with the upper end face of the second part 12 to form a complete track surface, and the combined end faces of the first part 11 and the second part 12 are matched to avoid material being stuck in the joint of the two parts. When the first part 11 is lowered to the lowest position, the misaligned material falling on the feeding track 1 is released to the hopper. In addition, the feeding track 1 is designed in a split form that one part is fixed and the other part is lifted, which can also prevent the material from being stuck in the screening position, and the stuck material can be released when the lifting track is lowered, ensuring the stability during use.

[0051] In some embodiments, as Figure 3 As shown, the material screening device further comprises a protective cover 6 connected with the fixed base 2 and covering the cylinder 41, the turning joint 45 and the connecting rod 42 to achieve safety protection.

[0052] As shown in Figure 8 and Figure 10 As shown, the fixed base 2 is further provided with a proximity sensor 7 for detecting the position of the connecting rod 42. By setting the proximity sensor 7, it can be judged whether the connecting rod 42 is in the swing state, and then whether the screening member 31 is stuck, so that the user can handle it in time when the screening member 31 is stuck.

[0053] The working process and principle of the material screening device of the embodiments of the present application will be described below in conjunction with the drawings: First, adjust the total thickness of the gasket 32 between the two screening members 31 on the rotating shaft 43 according to the width of the feeding track 1, so that the total thickness is adapted to the width of the feeding track 1, and ensure that the two screening members 31 are close to the two sides of the feeding track 1; Then, select a spacer 24 with appropriate height to adjust the height of the fixed base 2 and the rotating shaft 43 thereon, so that the distance between the lower end of the gasket 32 and the upper end face of the feeding track 1 is greater than the height of the head of the screw and less than the height of the misaligned screw; Start the cylinder 41, the cylinder 41 drives the connecting rod 42 to swing through the turning joint 45, and the connecting rod 42 drives the rotating shaft 43 to rotate when it swings; as Figure 8 and Figure 9 As shown, when the piston rod 412 of the cylinder 41 is extended, it pushes the connecting rod 42 to swing away from the cylinder body 411 of the cylinder 41, and drives the rotating shaft 43 and the gasket 32 and the screening member 31 thereon to rotate in the counterclockwise direction in the drawing, and the second end of the screening member 31 swings downward; asFigure 10 and Figure 11 As shown in FIG. 4, when the piston rod 412 of the cylinder 41 retracts, the connecting rod 42 is swung towards the cylinder body 411 of the cylinder 41, and the rotating shaft 43 and the gasket 32 and the screening member 31 thereon are rotated in the clockwise direction in the drawing, and the second end of the screening member 31 is swung upwards. Figure 12 As shown in FIG. 6, when the screws are fed onto the feeding track 1, the shank portions of some of the screws enter the track groove 13 of the feeding track 1, and the head portions of the screws are placed on the upper end surface of the feeding track 1, i.e., are matched with the feeding track 1, and are consistent with the set posture, and these screws are the postures of the material 8, and can be conveyed downstream along the feeding track 1 to the required place, and the shank portions of the other screws do not correctly enter the track groove 13, i.e., are not matched with the feeding track 1, and these screws are different from the set posture, and are the postures of the material; the cylinder 41 is rapidly reciprocated, thereby driving the screening member 31 to synchronously swing rapidly. During the reciprocating swinging of the screening member 31, the front end of the screening member 31 is always not higher than the upper end surface of the feeding track 1, so as to ensure that the screws with incorrect postures can be blocked during the swinging. When the screws slide down through the feeding track 1, the screws that have entered the feeding track 1 smoothly pass through the feeding track 1 from below the gasket 32, the screws with incorrect postures that are horizontally placed on the feeding track 1 are blocked by the screening member 31, and are thrown upwardly and obliquely under the rapid swinging of the screening member 31, thereby being separated from the feeding track 1 and being returned to the bin along the return channel, and the following material (screws with correct postures that have entered the track) can continue to smoothly slide down, thereby removing the jammed material, improving the success rate of the material entering the track, and improving the efficiency of the screw feeding.

[0054] The material screening device of the embodiment of the present application utilizes the mechanical structure and the physical screening mode to realize the arrangement and the sorting of the material, can reduce the use cost of the user, can ensure the stability and the consistency of the product, and can improve the success rate of the equipment material entering the feeding track 1.

[0055] The above description is intended to be illustrative and not restrictive, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present disclosure. Moreover, the above examples (or one or more schemes thereof) can be used in combination with each other, and the embodiments can be combined with each other in various combinations or arrangements.

Claims

1. A material screening device, characterized in that, include: Feeding track; A fixed base is located on one side of the feeding track. The screening assembly includes two screening components respectively disposed on both sides of the feeding track; A screening drive mechanism, which is mounted on the fixed base, is used to drive the two screening components to rotate synchronously and to make the two screening components swing up and down synchronously relative to the feeding track, so as to block the material with misaligned posture on the feeding track and make it leave the feeding track.

2. The material screening device according to claim 1, characterized in that, The screening drive mechanism includes a power component and a transmission assembly. The power component includes a cylinder. The transmission assembly includes a connecting rod and a rotating shaft. The rotating shaft is perpendicular to and fixedly connected to the connecting rod. The piston rod of the cylinder is rotatably connected to the connecting rod. The cylinder is used to drive the connecting rod to swing about the axis of the rotating shaft as the center of rotation. When the connecting rod swings, it drives the rotating shaft to rotate. Both of the screening components are fixed on the rotating shaft and swing synchronously with the rotating shaft.

3. The material screening device according to claim 2, characterized in that, The transmission assembly also includes a steering joint, which is fixed to the piston rod and moves synchronously with the piston rod. The steering joint is provided with a convex shaft, and the connecting rod is provided with a shaft hole. The convex shaft is located in the shaft hole. When the steering joint moves with the piston rod, the convex shaft pushes the connecting rod to swing about the axis of the rotating shaft as the center of rotation, and the convex shaft rotates in the shaft hole.

4. The material screening device according to claim 2, characterized in that, The fixed base is provided with a through hole, and a bearing seat is provided in the through hole. The rotating shaft passes through the bearing seat and is rotatably connected to the bearing seat through a bearing. The first end of the rotating shaft extends out of the fixed base and is fixedly connected to the first end of the connecting rod. The second end of the rotating shaft extends out of the fixed base and extends above the feeding track. Both screening components are fixed to the second end of the rotating shaft.

5. The material screening device according to claim 4, characterized in that, The two screening components have the same structure and are both tapered from their first end to their second end and bent into a hook shape to form a screening hook. The first end of the screening hook is fixed to the second end of the rotating shaft, and the second end of the screening hook is located below the upper surface of the feeding track.

6. The material screening device according to claim 2, characterized in that, The material screening device also includes multiple gaskets, which are arranged in different combinations on the rotating shaft and located between the two screening components, for adjusting the distance between the two screening components to match the width of the feeding track.

7. The material screening device according to claim 6, characterized in that, The material screening device also includes a base, a fixed seat is disposed on the base, and a spacer is provided between the fixed seat and the base. By replacing the spacer with different heights, the distance between the fixed seat and the base can be adjusted, thereby adjusting the distance between the pad and the feeding track, so that materials with the correct posture can pass through, while materials with the incorrect posture are blocked from passing through.

8. The material screening device according to claim 2, characterized in that, The fixed base is equipped with a rotating shaft; The material screening device also includes a cylinder seat, which has an assembly hole. The cylinder seat is mounted on the rotating shaft through the assembly hole and can rotate relative to the rotating shaft. The cylinder is fixed to the cylinder seat so that the cylinder can rotate relative to the rotating shaft together with the fixed seat when it is working.

9. The material screening device according to claim 2, characterized in that, The upper surface of the feeding track gradually descends along the feeding direction, so that materials with the correct posture entering the feeding track can be automatically transported downstream along the feeding track to the required location under their own gravity; and / or The upper surface of the feeding track near its track groove is chamfered to reduce the contact area between the head of the material and the feeding track.

10. The material screening device according to claim 9, characterized in that, The feeding track is divided into a first part located upstream and a second part located downstream along the feeding direction. The second part is fixed relative to the fixed seat, and the first part can be raised and lowered relative to the second part. When the first part is lowered to the lowest position, it can release the misaligned material that has fallen on the feeding track to the hopper. The joint surfaces of the first part and the second part are either flat or concave-convex. When the first part rises to its highest position, the upper surface of the first part and the upper surface of the second part are coplanar, and the joint surfaces of the first part and the second part match.

11. The material screening device according to claim 3, characterized in that, The material screening device further includes a protective cover, which is connected to the fixed base and covers the cylinder, steering joint, and connecting rod; and / or The mounting base is also equipped with a proximity sensor for detecting the position of the connecting rod.

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