Automatic screening machine

Abstract

The utility model relates to an automatic material screening machine, which belongs to the technical field of automatic material screening, and comprises a vibration base body, a first material screening barrel, a second material screening barrel and a hoop, the outer side of the first screening barrel is connected with the outer side of the second screening barrel through the hoop, and an anti-loosening mechanism is installed between the two ends of the hoop. The anti-loosening mechanism comprises two rotating connecting plates which are fixedly connected to the two ends of the clamp correspondingly and are in mirror symmetry. According to the automatic screening machine, the function of keeping high connection strength in a vibration environment can be provided, the loosening phenomenon caused by vibration can be effectively reduced, the automatic screening machine can adapt to tiny deformation caused by material impact or vibration, the overall service life of the automatic screening machine can be prolonged, the maintenance and replacement frequency is reduced, and the working efficiency is improved. And the long-term operation cost is reduced, and the production efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic material screening, and specifically relates to an automatic material screening machine. Background Art

[0002] The working principle of an automatic material screening machine is to drive a material sieve to screen materials through a vibration mechanism. The vibration mechanism usually uses a motor to drive, and generates vibration through a vibration motor. This vibration can be transmitted to the material sieve to make the material sieve vibrate. At the same time, by controlling the vibration frequency and amplitude, the screening of materials with different particle sizes can be realized. The design of the material sieve is also an important part of the automatic material screening machine technology. It needs to be designed according to the properties of the materials and the screening requirements to ensure that qualified materials and unqualified materials can be effectively separated.

[0003] In addition to the vibration mechanism, the automatic material screening machine is also equipped with a synchronization device for synchronously driving the material sieve to shake, which can increase the contact area between the material and the sieve surface and improve the screening efficiency. The design of the synchronization device requires precise calculation to ensure the stable shaking amplitude of the material sieve and avoid material overflow during the screening process.

[0004] In short, automatic material screening equipment is one of the indispensable equipment in modern industrial production. Its development process and technological innovation reflect the continuous progress of industrial automation technology. With the continuous development of technology, the automatic material screening machine will further improve the screening efficiency, reduce labor costs, and bring more convenience and benefits to industrial production.

[0005] When the existing automatic material screening machines generally screen some materials with high viscosity, due to the resistance between the materials, problems such as long screening time and incomplete screening occur. For example, an automatic material screening machine disclosed in the authorized Chinese patent CN218797234U can continuously and dynamically disperse the materials through the cooperation of structures such as a vibration base assembly, a material receiving bucket, a material screening bucket, and a material dispersion assembly, reduce the screening resistance, make the screening time shorter, and the screening more thorough.

[0006] However, when the automatic material screening machine in the above-cited document is in use, the connection method between the material receiving bucket, the secondary material screening bucket, and the material screening bucket generally adopts a structure of a clamp combined with bolts. Its original design intention is to achieve fast and convenient assembly and disassembly. However, the clamp works in a vibrating environment, especially in a situation like an automatic material screening machine that requires high-frequency vibration. The connection part is very likely to become loose. The generation of this looseness is mainly due to the limited contact area between the clamp and the bolt, resulting in insufficient connection strength. Under the action of the vibration force, the stress concentration phenomenon at the connection point is particularly obvious, reducing the friction force between the clamp and the bolt. As a result, the connection part is prone to looseness. The connection method of the clamp and the bolt lacks sufficient elastic deformation space and cannot adapt to the tiny deformation caused by material impact or vibration. This rigid connection method is very likely to cause fatigue damage to the connecting parts when encountering unpredictable vibration or impact, further exacerbating the occurrence of looseness. It will not only cause damage to the equipment but also lead to waste of materials and affect production efficiency. Summary of the Utility Model

[0007] In view of the deficiencies of the prior art, the present utility model provides an automatic material screening machine, which has the advantages of effectively improving the connection strength and adapting to tiny deformation, and solves the problem that the connection part between the clamp and the bolt in the prior art is prone to looseness in a vibrating environment.

[0008] To sum up, the present utility model provides the following technical solution: An automatic material screening machine includes a vibrating base body, a first material screening bucket, a second material screening bucket, and a clamp. The first material screening bucket is fixedly installed on one side of the vibrating base body away from the ground. The first material screening bucket and the second material screening bucket are connected by the clamp on the outer sides. An anti-loosening mechanism is installed between the two ends of the clamp.

[0009] The anti-loosening mechanism includes two rotation connecting plates that are fixedly connected to the two ends of the clamp and are mirror-symmetrical. A limiting movement component is connected between one side and the other side of the two rotation connecting plates. A support box located between the opposite sides of the two rotation connecting plates is installed between the opposite sides of the two limiting movement components. A driving component is installed in the support box, and a threaded fastening component connected to the inner sides of the two rotation connecting plates is connected to the driving component.

[0010] Further, the limiting movement component includes a sliding block, a sliding plate, and a rectangular limiting block. One side of the sliding block is fixedly connected to one side of the rotation connecting plate. The outer side of the sliding plate is slidably connected between the inner sides of the two sliding blocks. The two sides of the sliding plate are respectively fixedly connected to the opposite sides of the two rectangular limiting blocks. The support box is fixedly installed on both sides between the opposite sides of the two sliding plates through bolts respectively.

[0011] By adopting the above technical solution, the cooperation of the sliding block, the sliding plate and the rectangular limiting block can provide the necessary movement flexibility and ensure the stability of the rotating connecting plate during movement. The two sides of the sliding plate are respectively fixedly connected to the opposite sides of the two rectangular limiting blocks, and the opposite sides of the two sliding plates are fixedly installed on both sides of the support box through bolts. This structure not only enhances the stability of the entire assembly, but also enables the support box to move stably in the opposite or opposite directions on the rotating connecting plate through the sliding connection between the sliding plate and the sliding block based on the bolt fixation. Therefore, this design has achieved remarkable effects: it not only improves the stability and reliability of the assembly during movement, but also ensures that the support box can accurately follow the movement of the rotating connecting plate.

[0012] Furthermore, the projection of the sliding plate in the first direction is a rectangle with a length of L and a width of D. The first direction is parallel to the hole depth direction of the sliding block. The inner diameter length of the sliding block is Q and the width is F, and L = Q, D = F.

[0013] By adopting the above technical solution, it is to enable the sliding plate to slide between the inner sides of the two sliding blocks, making its movement more stable.

[0014] Furthermore, the driving assembly includes a worm, a turning handle and a worm gear; one end of the worm is rotatably connected to the inner side wall of the support box through a bearing, and the opposite end penetrates through the support box and extends to the outside of the support box and is fixedly connected to the turning handle. The outer side of the worm meshes with the outer side of the worm gear. After the worm and the worm gear cooperate with each other.

[0015] By adopting the above technical solution, the cooperation of the worm, the turning handle and the worm gear can ensure an accurate transmission ratio, that is, the rotation of the worm can be accurately converted into the rotation of the worm gear. Moreover, through the precise tooth profile design, the transmission process is extremely smooth, almost without noise and vibration, greatly improving the working efficiency and comfort of the machine. In addition, the unique self-locking characteristic of the worm and the worm gear can prevent the reverse rotation of the worm gear under specific conditions, which is particularly important for application occasions that require restricting the movement direction of the machine or safety protection. Therefore, the close cooperation between the worm and the worm gear not only optimizes the transmission efficiency, but also enhances the stability and safety of the mechanical system. This cooperation can also suppress vibration to a certain extent, avoid loosening problems caused by vibration, thereby prolonging the service life of mechanical components and ensuring the stability and durability of the entire system.

[0016] Further, the threaded fastening assembly includes a bidirectional screw and a circular limiting block; the inner side of the worm gear is fixedly connected to the outer side of the bidirectional screw, both ends of the circular limiting block are fixedly connected to the opposite sides of the two circular limiting blocks respectively, and the outer side of the bidirectional screw is threadedly connected between the inner sides of the two rotating connecting plates.

[0017] By adopting the above technical solution, under the combined action of the bidirectional screw and the circular limiting block, when the worm gear is driven to rotate, the bidirectional screw can be driven to rotate, and under the action of the threaded rotation thrust of the bidirectional screw, the two rotating connecting plates can be moved.

[0018] Further, one end of the bidirectional screw sequentially penetrates through the support box and the worm gear, and the outer side of the bidirectional screw is rotationally connected to the inside of the support box through a bearing.

[0019] By adopting the above technical solution, not only a stable support point is provided for the bidirectional screw, but also the outer side of the bidirectional screw can be rotationally connected to the inside of the support box through a bearing, which produces significant mechanical benefits and enables the bidirectional screw to maintain extremely high stability and accuracy during rotation.

[0020] Further, the left half section of the bidirectional screw has a left-handed thread, and the right half section of the bidirectional screw has a right-handed thread.

[0021] By adopting the above technical solution, a significant synergistic effect is produced, so that when the bidirectional screw is driven to move, the rotating connecting plates tightly connected to it can be driven to move uniformly in opposite or relative directions at the same time, which not only optimizes the efficiency of mechanical movement, but also ensures the smoothness and accuracy of the movement. Therefore, through this elaborate structural design, the bidirectional screw and the rotating connecting plates connected to it can efficiently complete complex motion conversion tasks.

[0022] Compared with the prior art, the present utility model provides an automatic screening machine, which has the following beneficial effects:

[0023] In this automatic screening machine, through the mutual cooperation of the first screening bucket, the second screening bucket, the clamp and the anti-loosening mechanism on the vibration base body, a function of maintaining a high connection strength in a vibration environment can be provided, effectively reducing the loosening phenomenon caused by vibration, being able to adapt to the minute deformation caused by material impact or vibration. This design enables the connecting parts to absorb and disperse external vibration and impact to a certain extent, thereby reducing the risk of damage caused by stress concentration, contributing to extending the overall service life of the automatic screening machine, which not only reduces the frequency of maintenance and replacement, but also reduces the long-term operation cost, and helps to improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1It is a schematic structural diagram of the present utility model;

[0025] Figure 2 is Figure 1 a schematic cross-sectional view of the sliding plate connection structure in

[0026] Figure 3 is Figure 2 a left cross-sectional view of the support box connection structure in

[0027] Figure 4 is Figure 1 a three-dimensional schematic diagram of the sliding plate connection structure in

[0028] Figure 5 is Figure 4 a partial enlarged view of part A in

[0029] Explanation of reference numerals:

[0030] 1. Vibration base body; 2. First screening bucket; 3. Second screening bucket; 4. Clamp; 500. Anti-loosening mechanism; 501. Rotating connection plate; 5021. Sliding block; 5022. Sliding plate; 5023. Rectangular limit block; 503. Support box; 5041. Worm; 5042. Rotating handle; 5043. Worm gear; 5051. Bi-directional screw; 5052. Circular limit block. Specific implementation manners

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0032] Please refer to Figures 1 to 5 , the present utility model provides a technical solution: an automatic screening machine, including a vibration base body 1, a first screening bucket 2, a second screening bucket 3 and a clamp 4. The first screening bucket 2 is fixedly installed on one side of the vibration base body 1 away from the ground. The first screening bucket 2 and the second screening bucket 3 are connected by a clamp 4 on the outer sides, and an anti-loosening mechanism 500 is installed between the two ends of the clamp 4;

[0033] Through the coordinated use of the first screening bucket 2, the second screening bucket 3, the clamp 4 and the anti-loosening mechanism 500 on the vibration base body 1, a function of maintaining a high connection strength in a vibration environment can be provided, effectively reducing the loosening phenomenon caused by vibration, being able to adapt to the minute deformation caused by material impact or vibration. This design enables the connecting piece to absorb and disperse external vibration and impact to a certain extent, thereby reducing the risk of damage caused by stress concentration, contributing to extending the overall service life of the automatic screening machine. This not only reduces the frequency of maintenance and replacement, but also reduces the long-term operation cost, and helps to improve production efficiency.

[0034] In this embodiment, the anti-loosening mechanism 500 is a structure for maintaining a high connection strength in a vibration environment.

[0035] Such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown in

[0036] It should be noted that the limit moving component includes a sliding block 5021, a sliding plate 5022 and a rectangular limit block 5023; one side of the sliding block 5021 is fixedly connected to one side of the rotating connection plate 501, the inner sides between the two sliding blocks 5021 are slidably connected to the outer side of the sliding plate 5022, and the two sides of the sliding plate 5022 are respectively fixedly connected to the opposite sides of the two rectangular limit blocks 5023. The two sides between the opposite sides of the two sliding plates 5022 and the two sides of the support box 503 are fixedly installed by bolts respectively. This connection method not only provides the necessary movement flexibility, but also ensures that the rotating connection plate 501 can maintain stability during movement. The two sides of the sliding plate 5022 are respectively fixedly connected to the opposite sides of the two rectangular limit blocks 5023, and the two sides between the opposite sides of the two sliding plates 5022 are fixedly installed with the two sides of the support box 503 by bolts. This structure not only enhances the stability of the entire component, but also enables the support box 503 to move stably in the opposite or opposite direction on the rotating connection plate 501 through the sliding connection between the sliding plate 5022 and the sliding block 5021 based on the bolt fixation. Therefore, this design has produced remarkable effects: it not only improves the stability and reliability of the component during movement, but also ensures that the support box 503 can accurately follow the movement of the rotating connection plate 501.

[0037] It can be understood that the projection of the sliding plate 5022 in the first direction is a rectangle with a length of L and a width of D. The first direction is parallel to the hole depth direction of the sliding block 5021. The inner diameter length of the sliding block 5021 is Q and the width is F. L = Q and D = F are to enable the sliding plate 5022 to fit and slide between the inner sides of the two sliding blocks 5021 to make its movement more stable.

[0038] In addition, the driving component includes a worm 5041, a turning handle 5042, and a worm gear 5043. One end of the worm 5041 is rotatably connected to the inner side wall of the support box 503 through a bearing, and the opposite end penetrates through the support box 503 and extends to the outside of the support box 503 and is fixedly connected to the turning handle 5042. The outer side of the worm 5041 meshes with the outer side of the worm gear 5043. After the worm 5041 and the worm gear 5043 cooperate with each other, efficient transmission can be achieved. This kind of cooperation not only ensures an accurate transmission ratio, that is, the rotation of the worm can be precisely converted into the rotation of the worm gear, but also through a precise tooth profile design, the transmission process is extremely smooth, almost without noise and vibration, greatly improving the working efficiency and comfort of the machine. In addition, the unique self-locking characteristic of the worm 5041 and the worm gear 5043 can prevent the reverse rotation of the worm gear 5043 under specific conditions, which is particularly important for application scenarios that require restricting the direction of mechanical movement or safety protection. Therefore, the close cooperation between the worm 5041 and the worm gear not only optimizes the transmission efficiency, but also enhances the stability and safety of the mechanical system. This kind of cooperation can also suppress vibrations to a certain extent, avoid loosening problems caused by vibrations, thereby extending the service life of mechanical components and ensuring the stability and durability of the entire system.

[0039] In this embodiment, the threaded fastening component includes a bidirectional screw 5051 and a circular limiting block 5052. The inner side of the worm gear 5043 is fixedly connected to the outer side of the bidirectional screw 5051. The two ends of the circular limiting block 5052 are respectively fixedly connected to the opposite sides of the two circular limiting blocks 5052. The outer side of the bidirectional screw 5051 is threadedly connected between the inner sides of the two rotating connecting plates 501, so as to be able to drive the bidirectional screw 5051 to rotate when driving the worm gear 5043 to rotate, and move the two rotating connecting plates 501 under the action of the threaded rotational thrust of the bidirectional screw 5051.

[0040] It should also be noted that one end of the bidirectional screw 5051 sequentially penetrates through the support box 503 and the worm gear 5043. The outer side of the bidirectional screw 5051 is rotatably connected to the inside of the support box 503 through a bearing. This design not only provides a stable support point for the bidirectional screw, but also enables the outer side of the bidirectional screw to be rotatably connected to the inside of the support box through a bearing, resulting in significant mechanical benefits, enabling the bidirectional screw to maintain extremely high stability and precision when rotating.

[0041] It should be further noted that the left half of the bidirectional screw 5051 has a left-handed thread, and the right half of the bidirectional screw 5051 has a right-handed thread. This unique structural design produces a significant synergistic effect, such that when driving the bidirectional screw 5051 to move, it can simultaneously drive the rotation connection plate 501 tightly connected thereto to move uniformly in opposite or reverse directions, not only optimizing the efficiency of mechanical movement but also ensuring the smoothness and accuracy of the movement. Therefore, through this elaborate structural design, the bidirectional screw 5051 and the rotation connection plate 501 connected thereto can efficiently complete complex movement conversion tasks.

[0042] The working principle of the above embodiment is as follows:

[0043] During use, when it is necessary to tightly connect the first screening bucket 2 and the second screening bucket 3, first hold the rotating handle 5042 and rotate it. Driven by the rotating support of the bearing, the worm 5041 rotates, and driven by the meshing of the worm gear 5043 and the worm 5041 and the rotating support of the bearing, the bidirectional screw 5051 rotates. Since the rotation connection plate 501 can only move left and right under the sliding connection and cooperation of the sliding block 5021 and the sliding plate 5022, the two rotation connection plates 501 move uniformly in opposite or reverse directions on the outside of the bidirectional screw 5051 under the thrust of the inner thread rotation. When the two rotation connection plates 501 gradually approach, the first screening bucket 2 and the second screening bucket 3 are gradually tightened until the rotating handle 5042 cannot be turned. At this time, let go. Due to the unique self-locking characteristic of the cooperation between the worm 5041 and the worm gear 5043, it can prevent the worm gear 5043 from rotating in the reverse direction under specific conditions, that is, it can prevent loosening during vibration.

[0044] Compared with the prior art: This automatic screening machine, through the mutual cooperation of the first screening bucket 2, the second screening bucket 3, the clamp 4 and the anti-loosening mechanism 500 on the vibration base body 1, can provide a function of maintaining a high connection strength in a vibration environment, effectively reducing the loosening phenomenon caused by vibration, and being able to adapt to the minute deformation caused by material impact or vibration. This design enables the connecting parts to absorb and disperse external vibration and impact to a certain extent, thereby reducing the risk of damage caused by stress concentration, helping to extend the overall service life of the automatic screening machine. This not only reduces the frequency of maintenance and replacement but also reduces the long-term operation cost, helping to improve production efficiency, and solving the problem that the connection part between the clamp and the bolt is prone to loosening in a vibration environment in the prior art.

Claims

1. An automatic screening machine, comprising a vibrating base body (1), a first screening bucket (2), a second screening bucket (3) and a clamp (4). The first screening bucket (2) is fixedly installed on one side of the vibrating base body (1) away from the ground. The first screening bucket (2) and the second screening bucket (3) are connected by the clamp (4) on the outer sides thereof. It is characterized in that: An anti-loosening mechanism (500) is installed between the two ends of the clamp (4); The anti-loosening mechanism (500) includes two rotation connecting plates (501) that are fixedly connected to the two ends of the clamp (4) respectively and are mirror-symmetrical. A limit movement assembly is connected between one side and the other side of the two rotation connecting plates (501). A support box (503) located between the opposite sides of the two rotation connecting plates (501) is installed between the opposite sides of the two limit movement assemblies. A driving assembly is installed in the support box (503), and a threaded fastening assembly connected to the inner sides of the two rotation connecting plates (501) is connected to the driving assembly.

2. The automatic material screening machine according to claim 1, wherein: The limit movement assembly includes a sliding block (5021), a sliding plate (5022), and a rectangular limit block (5023); one side of the sliding block (5021) is fixedly connected to one side of the rotation connecting plate (501). The outer side of the sliding plate (5022) is slidably connected to the inner sides of the two sliding blocks (5021). The two sides of the sliding plate (5022) are respectively fixedly connected to the opposite sides of the two rectangular limit blocks (5023). The support box (503) is fixedly installed on both sides between the opposite sides of the two sliding plates (5022) through bolts respectively.

3. The automatic material screening machine according to claim 2, wherein: The projection of the sliding plate (5022) in the first direction is a rectangle with a length of L and a width of D. The first direction is parallel to the hole depth direction of the sliding block (5021). The inner diameter length of the sliding block (5021) is Q and the width is F, and L = Q, D = F.

4. The automatic material screening machine according to claim 1, wherein: The driving assembly includes a worm (5041), a rotating handle (5042), and a worm gear (5043); one end of the worm (5041) is rotatably connected to the inner side wall of the support box (503) through a bearing. The opposite end penetrates through the support box (503) and extends to the outside of the support box (503) and is fixedly connected to the rotating handle (5042). The outer side of the worm (5041) meshes with the outer side of the worm gear (5043). After the worm (5041) and the worm gear (5043) cooperate with each other.

5. The automatic material screening machine according to claim 4, wherein: The threaded fastening assembly includes a bidirectional screw (5051) and a circular limit block (5052); the inner side of the worm gear (5043) is fixedly connected to the outer side of the bidirectional screw (5051). The two ends of the circular limit block (5052) are respectively fixedly connected to the opposite sides of the two circular limit blocks (5052). The outer side of the bidirectional screw (5051) is threadedly connected between the inner sides of the two rotation connecting plates (501).

6. The automatic material screening machine according to claim 5, wherein: One end of the bidirectional screw (5051) sequentially penetrates through the support box (503) and the worm gear (5043), and the outer side of the bidirectional screw (5051) is rotatably connected to the inside of the support box (503) through a bearing.

7. The automatic material screening machine according to claim 5, wherein: The left half section of the bidirectional screw (5051) has a left-handed thread, and the right half section of the bidirectional screw (5051) has a right-handed thread.

Images