Nut machining and sorting apparatus

Abstract

This utility model relates to the field of nut processing technology and discloses a nut processing and screening device, including a base, a screening mechanism on the top of the base, a feeding mechanism on the left side of the top of the base, a support frame fixedly connected to the top of the base, a conveyor table fixedly connected to the top of the support frame, a mounting frame fixedly connected to the bottom right side of the conveyor table, and a first servo motor fixedly connected to the bottom of the mounting frame. In use, when the nuts need to be screened and are conveyed into the conveyor table, the nuts will move to the right due to the design of the conveyor table. The right channel is narrow, and only one nut can pass through at a time. Through the clear division of labor between the first and second feeding troughs, small and large nuts can be screened separately, different specifications of nuts can be distinguished, and the problem of mixing materials can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of nut processing technology, specifically a nut processing and screening device. Background Technology

[0002] During the nut processing and production process, due to factors such as processing accuracy and equipment errors, nuts produced in the same batch often have inconsistent dimensions and specifications. As a key component in mechanical assembly, the dimensional accuracy of nuts directly affects the assembly quality and connection stability. Therefore, it is necessary to strictly screen the processed nuts by size to distinguish products of different specifications and avoid mixing problems.

[0003] Currently, existing equipment for nut screening has many shortcomings. Some screening equipment uses manual feeding or single-channel conveying, which is not only inefficient but also prone to insufficient screening accuracy due to human error. Some equipment has unreasonable screening structure design, and the channel width cannot be precisely controlled, often resulting in multiple nuts passing through at the same time. There is a lack of effective correction mechanism in the conveying and screening process, and nuts are prone to blockage and jamming during movement, affecting the continuity and stability of screening.

[0004] According to the description of a nut processing and screening device published on the patent website (authorization announcement number: CN223097377U), the nut processing and screening device includes a "transfer frame, baffle" and other components to perform the screening work.

[0005] Regarding the above description, the applicant believes the following issues exist:

[0006] This nut processing and screening equipment uses a conveyor frame and baffles to perform the screening work. When in use, the nuts slide down from the inclined plate onto the conveyor frame below. However, there is no correction structure on the inclined plate, which causes multiple nuts to pile up or large nuts to have misalignment. This results in the nuts piling up on the inclined plate and affects the smoothness of the conveying. Therefore, this equipment needs to be improved. Utility Model Content

[0007] The purpose of this invention is to provide a nut processing and screening device to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a nut processing and screening device, including a base, a screening mechanism on the top of the base, and a feeding mechanism on the left side of the top of the base;

[0009] The screening mechanism includes a support frame fixedly connected to the top of the base. A conveyor platform is fixedly connected to the top of the support frame. A mounting frame is fixedly connected to the bottom right side of the conveyor platform. A first servo motor is fixedly connected to the bottom of the mounting frame. A first rotating rod is fixedly connected to the top of the first servo motor. A first sprocket is fixedly connected to the periphery of the first rotating rod. A first correction wheel is fixedly connected to the periphery of the first rotating rod. A composite sprocket meshes with the periphery of the first sprocket. A second rotating rod is fixedly connected inside the composite sprocket. A second correction wheel is fixedly connected to the periphery of the second rotating rod. A fixing frame is fixedly connected to the right side of the support frame, which is fixedly connected to the top right side of the base. A second servo motor is fixedly connected to the top of the fixing frame. A rotating shaft is fixedly connected to the bottom of the second servo motor. A screening disc is fixedly connected to the periphery of the rotating shaft. Protective covers are fixedly connected to the front and rear sides of the fixing frame, and the protective covers are located around the screening disc.

[0010] Preferably, the first rotating rod is rotatably connected to the mounting frame and the conveyor table, and the second rotating rod is rotatably connected to the conveyor table, so as to drive the first and second correction wheels to rotate through the first and second rotating rods.

[0011] Preferably, the first and second straightening wheels are rotatably connected to the inner side of the right end of the conveyor table, which facilitates the straightening of the nuts conveyed to the right side of the conveyor table by the first and second straightening wheels, thus avoiding blockage.

[0012] Preferably, the rotating shaft is rotatably connected inside the fixed frame and the base, the protective cover is semi-circular, and the left and right ends of the front and rear protective covers inside the fixed frame do not overlap, so as to facilitate the protection of the nuts inside the screening tray through the protective cover.

[0013] Preferably, the first rotating rod, the first correcting wheel, and the first chain are provided in two sets and are symmetrically distributed on the left and right sides of the second rotating rod. The two sets of first chains are respectively engaged with the periphery of the composite sprocket, which facilitates the improvement of the correction effect by providing two sets.

[0014] Preferably, the mounting bracket, the first servo motor, the first sprocket, the first rotating rod, the first correction wheel, the first chain, the composite sprocket, the second rotating rod, and the second correction wheel are provided in two sets, and are symmetrically distributed on the front and rear sides of the right end of the conveyor table. By setting two sets, the comprehensiveness of the correction can be guaranteed.

[0015] Preferably, a first feeding trough is provided at the bottom inner right end of the conveyor table, and a second feeding trough is provided at the right end of the conveyor table. The size of the first feeding trough is smaller than that of the second feeding trough, so as to facilitate the screening and feeding of nuts of different sizes through the first feeding trough and the second feeding trough.

[0016] Preferably, the screening disc has a screening port inside, and the size of the screening port is the same as the size of the second feeding trough. The screening disc is located at the right end of the conveyor table, which facilitates the conveying of nuts screened by the second feeding trough through the screening disc.

[0017] Preferably, the feeding mechanism includes a load-bearing frame, which is fixedly connected to the top left side of the base. A storage box is fixedly connected to the top of the load-bearing frame, and a fixed platform is fixedly connected to the top right side of the storage box. A second hydraulic cylinder is fixedly connected to the top of the fixed platform, and a baffle is fixedly connected to the bottom of the second hydraulic cylinder. The baffle is slidably connected inside the storage box, and a conveying pipe is fixedly connected to the bottom right side of the storage box.

[0018] Preferably, the bottom of the baffle is in contact with the bottom of the storage box, and the bottom of the storage box is inclined. A conveying trough is provided on the right side of the storage box. The right side of the baffle and the left side of the conveying pipe are located on the left and right sides of the conveying trough, respectively. The bottom of the conveying pipe is located on the top left side of the conveying platform. This allows the baffle to control the feeding speed of the nuts in the storage box and ensures the stable operation of the screening process.

[0019] Compared with the prior art, this utility model provides a nut processing and screening device, which has the following features:

[0020] Beneficial effects:

[0021] 1. This nut processing and screening equipment, through its screening mechanism, allows for nut screening when nuts are conveyed to the conveyor table. Due to the table's design, the nuts move to the right, and the right-side channel is narrow, allowing only one nut to pass at a time. The clear division of labor between the first and second feeding troughs enables separate screening of small and large nuts, distinguishing different specifications and preventing material mixing. This meets the requirements for dimensional consistency in subsequent processing or assembly. The mounting frame, servo motor, sprocket, and alignment wheel all employ two symmetrically distributed structures. The first servo motor connects to the sprocket... The transmission drives the first and second correction wheels to operate synchronously, ensuring the stability of the nut's position during transport and preventing blockages or jamming during movement. This ensures the stability of the screening process. The two sets of first servo motors rotate in opposite directions. Smaller nuts are fed through the first feeding chute, while larger nuts are fed through the second feeding chute into the screening disc. The screening disc operates stably under the drive of the second servo motor. Combined with the semi-circular protective cover, it not only prevents nuts from splashing during screening but also enhances the screening accuracy of large nuts by matching the size of the screening opening with the second feeding chute, reducing misscreening and missed screening.

[0022] 2. This nut processing and screening equipment, through its feeding mechanism, first puts the processed nuts into the storage bin when screening is required. The inclined design at the bottom of the storage bin allows the nuts to naturally gather towards the outlet. By controlling the movement stroke of the second hydraulic cylinder, the distance the drive baffle moves within the storage bin can be controlled, thus achieving feeding rhythm control. In conjunction with the conveying pipe, the nuts are directly transported to the conveying table, eliminating the need for manual feeding one by one, making the feeding process continuous and stable. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is a schematic diagram of the left-side structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the screening mechanism;

[0027] Figure 4 This is a schematic diagram of the top structure of the support frame;

[0028] Figure 5 This is a schematic diagram of the bottom structure of the conveyor platform;

[0029] Figure 6 This is a schematic diagram of the conveyor platform from below.

[0030] Figure 7 This is a schematic diagram of the right side of the support frame;

[0031] Figure 8 This is a schematic diagram of the feeding mechanism.

[0032] In the diagram: 1. Base; 2. Screening mechanism; 3. Feeding mechanism; 21. Support frame; 22. Conveyor table; 23. Fixing frame; 24. Mounting frame; 25. First servo motor; 26. First sprocket; 27. First rotating rod; 28. First correction wheel; 29. ​​First chain; 291. Composite sprocket; 292. Second rotating rod; 293. Second correction wheel; 294. Second servo motor; 295. Rotating shaft; 296. Screening disc; 297. Protective cover; 31. Load-bearing frame; 32. Storage box; 33. Fixing table; 34. Second hydraulic cylinder; 35. Baffle; 36. Conveying pipe. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] This utility model provides the following technical solution:

[0036] Example 1

[0037] Please see Figure 1-8 This utility model provides a technical solution: a nut processing and screening device, including a base 1, a screening mechanism 2 is provided on the top of the base 1, and a feeding mechanism 3 is provided on the left side of the top of the base 1;

[0038] The screening mechanism 2 includes a support frame 21, which is fixedly connected to the top of the base 1. A conveyor table 22 is fixedly connected to the top of the support frame 21. A mounting frame 24 is fixedly connected to the bottom right side of the conveyor table 22. A first servo motor 25 is fixedly connected to the bottom of the mounting frame 24. A first rotating rod 27 is fixedly connected to the top of the first servo motor 25. A first sprocket 26 is fixedly connected to the periphery of the first rotating rod 27. A first correction wheel 28 is fixedly connected to the periphery of the first rotating rod 27. A composite sprocket 291 meshes with the periphery of the first sprocket 26. A second rotating rod 292 is fixedly connected inside the base 1. A second correction wheel 293 is fixedly connected to the outer periphery of the second rotating rod 292. A fixed frame 23 is fixedly connected to the right side of the support frame 21. The fixed frame 23 is fixedly connected to the top right side of the base 1. A second servo motor 294 is fixedly connected to the top of the fixed frame 23. A rotating shaft 295 is fixedly connected to the bottom of the second servo motor 294. A screening disc 296 is fixedly connected to the outer periphery of the rotating shaft 295. Protective covers 297 are fixedly connected to the front and rear sides of the fixed frame 23. The protective covers 297 are located around the screening disc 296.

[0039] The first rotating rod 27 is rotatably connected to the inside of the mounting frame 24 and the conveyor table 22, and the second rotating rod 292 is rotatably connected to the inside of the conveyor table 22, so that the first correcting wheel 28 and the second correcting wheel 293 can be rotated through the first rotating rod 27 and the second rotating rod 292.

[0040] The first straightening wheel 28 and the second straightening wheel 293 are rotatably connected to the inner side of the right end of the conveyor table 22, so as to facilitate the straightening of the nuts conveyed to the right side of the conveyor table 22 by the first straightening wheel 28 and the second straightening wheel 293, and avoid blockage.

[0041] The rotating shaft 295 is rotatably connected to the inside of the fixed frame 23 and the base 1. The protective cover 297 is semi-circular, and the left and right ends of the protective cover 297 on the front and rear sides inside the fixed frame 23 do not overlap, so that the nut inside the screening disc 296 can be protected by the protective cover 297.

[0042] Two sets of the first rotating rod 27, the first correcting wheel 28, and the first chain 29 are provided and symmetrically distributed on the left and right sides of the second rotating rod 292. The two sets of first chains 29 are respectively engaged with the periphery of the composite sprocket 291, which facilitates the improvement of the correction effect by setting two sets.

[0043] The mounting frame 24, the first servo motor 25, the first sprocket 26, the first rotating rod 27, the first correction wheel 28, the first chain 29, the composite sprocket 291, the second rotating rod 292, and the second correction wheel 293 are provided in two sets and are symmetrically distributed on the front and rear sides of the right end of the conveyor table 22. By setting two sets, the comprehensiveness of the correction can be guaranteed.

[0044] A first feeding trough is provided at the bottom right end of the conveyor table 22, and a second feeding trough is provided at the right end of the conveyor table 22. The size of the first feeding trough is smaller than that of the second feeding trough, so that nuts of different sizes can be screened and fed separately through the first feeding trough and the second feeding trough.

[0045] The screening disc 296 has a screening port inside, and the size of the screening port is the same as that of the second feeding trough. The screening disc 296 is located at the right end of the conveyor table 22, which facilitates the conveying of nuts screened by the second feeding trough through the screening disc 296.

[0046] Example 2

[0047] Please see Figure 1-8Furthermore, based on Embodiment 1, the feeding mechanism 3 further includes a load-bearing frame 31, which is fixedly connected to the top left side of the base 1. A storage box 32 is fixedly connected to the top of the load-bearing frame 31. A fixed platform 33 is fixedly connected to the top right side of the storage box 32. A second hydraulic cylinder 34 is fixedly connected to the top of the fixed platform 33. A baffle 35 is fixedly connected to the bottom of the second hydraulic cylinder 34. The baffle 35 is slidably connected inside the storage box 32. A conveying pipe 36 is fixedly connected to the bottom right side of the storage box 32.

[0048] The bottom of the baffle 35 is in contact with the bottom of the storage box 32, and the bottom of the storage box 32 is inclined. A conveying trough is provided on the right side of the storage box 32. The right side of the baffle 35 and the left side of the conveying pipe 36 are located on the left and right sides of the conveying trough, respectively. The bottom of the conveying pipe 36 is located on the top left side of the conveying table 22, so that the feeding speed of the nuts in the storage box 32 can be controlled by the baffle 35 to ensure the stable operation of the screening process.

[0049] In actual operation, when this device is used and the nuts need to be screened, collection frames are first placed at the bottom of the first feeding trough and the bottom right side of the screening disc 296. The processed nuts are then put into the storage box 32. The inclined design of the bottom of the storage box 32 allows the nuts to naturally gather towards the outlet. By controlling the movement stroke of the second hydraulic cylinder 34, the distance that the drive baffle 35 moves in the storage box 32 can be controlled to achieve feeding rhythm control. With the help of the conveying pipe 36, the nuts are directly conveyed to the conveying table 22 without the need for manual feeding one by one, making the feeding process continuous and stable.

[0050] When the nut is conveyed into the conveyor table 22, due to the design of the conveyor table 22, the nut will move to the right. The right channel is narrow, and only one large nut or two small nuts can pass through at a time. When the nut is located on the right side of the conveyor table 22 and cannot move, the first servo motor 25 drives the first correction wheel 28 and the first sprocket 26, which are fixedly connected to the periphery of the first rotating rod 27, to rotate. The first sprocket 26 drives the second correction wheel 293, which is fixedly connected to the periphery of the second rotating rod 292, to rotate. The nut can be adjusted in position under the action of the correction wheel. The mounting frame 24, the first servo motor 25, the first sprocket 26, the first correction wheel and the second correction wheel 293 all adopt two sets of symmetrical distribution structures, which further ensures the comprehensiveness of the nut correction process. Moreover, the two sets of first servo motors 25 rotate in opposite directions to avoid the blockage of the screening process caused by the simultaneous movement of two small nuts and the movement of a large nut.

[0051] Smaller nuts are fed through the first feeding chute, while larger nuts are fed through the second feeding chute into the screening port of the screening disc 296. The second servo motor 294 drives the screening disc 296, which is fixedly connected to the outer side of the rotating shaft 295, to rotate, thereby rotating the nuts screened in the screening disc 296. The screening disc 296 is located inside the protective cover 297 to ensure the stability of the nuts. When the nuts in the screening port are located at the right end of the two sets of protective covers 297, the left and right ends of the two protective covers 297 do not overlap, which facilitates the nuts to enter and exit the screening disc 296, ensuring the continuity of the screening process and controlling the feeding speed. Furthermore, the size of the screening port matches the second feeding chute, further enhancing the screening accuracy of large-sized nuts and reducing misscreening and missed screening.

[0052] In this application, all the first servo motor 25, the second servo motor 294, the first hydraulic cylinder, and the second hydraulic cylinder 34 need to be connected to the same PLC controller to ensure the coordinated and synchronous operation of the equipment. The PLC controller is existing technology, and those skilled in the art are well aware of its operation method, so it will not be described in detail here.

[0053] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A nut processing and screening device, comprising a base (1), characterized in that: The base (1) is provided with a screening mechanism (2) on the top and a feeding mechanism (3) is provided on the left side of the top of the base (1); The screening mechanism (2) includes a support frame (21), which is fixedly connected to the top of the base (1). A conveyor platform (22) is fixedly connected to the top of the support frame (21). An installation frame (24) is fixedly connected to the bottom right side of the conveyor platform (22). A first servo motor (25) is fixedly connected to the bottom of the installation frame (24). A first rotating rod (27) is fixedly connected to the top of the first servo motor (25). A first sprocket (26) is fixedly connected to the periphery of the first rotating rod (27). A first correction wheel (28) is fixedly connected to the periphery of the first rotating rod (27). A composite sprocket (291) meshes with the periphery of the first sprocket (26). A second rotating rod (292) is fixedly connected inside the composite sprocket (291). A second correction wheel (293) is fixedly connected to the periphery of the second rotating rod (292). A fixed frame (23) is fixedly connected to the right side of the support frame (21). The fixed frame (23) is fixedly connected to the top right side of the base (1). A second servo motor (294) is fixedly connected to the top of the fixed frame (23). A rotating shaft (295) is fixedly connected to the bottom of the second servo motor (294). A screening disc (296) is fixedly connected to the periphery of the rotating shaft (295). Protective covers (297) are fixedly connected to the front and rear sides inside the fixed frame (23). The protective covers (297) are located around the screening disc (296).

2. The nut processing and screening equipment according to claim 1, characterized in that: The first rotating rod (27) is rotatably connected to the mounting frame (24) and the conveyor (22), and the second rotating rod (292) is rotatably connected to the conveyor (22).

3. The nut processing and screening equipment according to claim 1, characterized in that: The first correction wheel (28) and the second correction wheel (293) are rotatably connected to the inner side of the right end of the conveyor table (22).

4. The nut processing and screening equipment according to claim 1, characterized in that: The rotating shaft (295) is rotatably connected to the inside of the fixed frame (23) and the base (1). The protective cover (297) is semi-circular, and the left and right ends of the protective covers (297) on the front and rear sides inside the fixed frame (23) do not overlap.

5. The nut processing and screening equipment according to claim 1, characterized in that: The first rotating rod (27), the first straightening wheel (28) and the first chain (29) are provided in two sets and are symmetrically distributed on the left and right sides of the second rotating rod (292), and the two sets of first chains (29) are respectively engaged with the periphery of the composite sprocket (291).

6. The nut processing and screening equipment according to claim 1, characterized in that: The mounting frame (24), the first servo motor (25), the first sprocket (26), the first rotating rod (27), the first correction wheel (28), the first chain (29), the composite sprocket (291), the second rotating rod (292), and the second correction wheel (293) are provided in two sets and are symmetrically distributed on the front and rear sides of the right end of the conveyor table (22).

7. The nut processing and screening equipment according to claim 1, characterized in that: The right end of the conveyor (22) has a first discharge trough at the bottom, and the right end of the conveyor (22) has a second discharge trough, and the size of the first discharge trough is smaller than that of the second discharge trough.

8. The nut processing and screening equipment according to claim 1, characterized in that: The screening plate (296) has a screening port inside, and the size of the screening port is the same as that of the second feeding trough. The screening plate (296) is located at the right end of the conveyor table (22).

9. A nut processing and screening device according to claim 1, characterized in that: The feeding mechanism (3) includes a load-bearing frame (31), which is fixedly connected to the top left side of the base (1). A storage box (32) is fixedly connected to the top of the load-bearing frame (31). A fixed platform (33) is fixedly connected to the top right side of the storage box (32). A second hydraulic cylinder (34) is fixedly connected to the top of the fixed platform (33). A baffle (35) is fixedly connected to the bottom of the second hydraulic cylinder (34). The baffle (35) is slidably connected inside the storage box (32). A conveying pipe (36) is fixedly connected to the bottom right side of the storage box (32).

10. A nut processing and screening device according to claim 9, characterized in that: The bottom of the baffle (35) is in contact with the bottom of the storage box (32), and the bottom of the storage box (32) is inclined. A conveying groove is provided on the right side of the storage box (32). The right side of the baffle (35) and the left side of the conveying pipe (36) are located on the left and right sides of the conveying groove, respectively. The bottom of the conveying pipe (36) is located on the top left side of the conveying table (22).

Images