A steel nail finished product vibration screening mechanism

Abstract

The utility model discloses a kind of steel nail finished product vibrating screening mechanisms, belong to vibrating screening mechanism technical field, including sieve box, by limit piece to pull movable plate and to movable plate position limit, make that after inserting rod is separated from card hole, again utilize handle to extract sieve plate from sieve box through dismounting opening, it can complete the dismounting of sieve plate, and sieve plate that needs to be replaced is inserted into sieve box again through dismounting opening, and after using supporting plate to support sieve plate, let limit piece not limit movable plate again, make movable plate move upwards under the action of elastic member, let inserting rod insert into card hole to fix sieve plate, it can complete the installation replacement of sieve plate, so when dismounting replacement to sieve plate, dust cover does not need to be opened, and whole process does not need to use wrench etc. Tool dismounting bolt, single-person operation can complete sieve plate replacement, not only shorten replacement time, and reduce labor intensity of staff, reduce equipment downtime.

Description

Technical Field

[0001] This utility model relates to the technical field of vibration screening mechanisms, and in particular to a vibration screening mechanism for finished steel nails. Background Technology

[0002] Steel nails are small metal fasteners made primarily of steel through processes such as cutting, cold heading, and heat treatment. Their core function is to fix or connect objects of different materials (such as wood, boards, and walls) together using their sharp tips and load-bearing caps. They are widely used basic accessories in industrial production, construction, and home decoration.

[0003] In existing technologies, during the large-scale production of steel nails, factors such as fluctuations in the diameter of raw wire, wear of cold heading dies, and deviations in cutting precision can easily lead to dimensional defects in finished steel nails, including excessive nail head diameter, uneven shaft length, and missing nail tips. Furthermore, impurities such as metal scraps and oxide scale generated during production may also be present. If these substandard products directly enter the market, they will not only affect the construction results for downstream users but may also pose safety hazards. Therefore, it is essential to use a vibration screening mechanism to grade and separate impurities from the finished steel nails.

[0004] Currently, linear vibrating screens have become the mainstream equipment for screening finished steel nails due to their advantages of large processing capacity and high grading efficiency. Their working principle involves a vibrating motor driving the screen box to vibrate at high frequency, causing the steel nails to perform linear jumping motion on the screen plate. The use of screen plates with different apertures achieves the stratified separation of "qualified steel nails – substandard steel nails – impurities".

[0005] However, traditional linear vibrating screens often use bolts to directly fix the screen plates inside the screen box. When it is necessary to replace the screen plates with different aperture sizes according to the specifications of the steel nails (such as switching from steel nails with 10-15mm screen nail heads to 8-12mm), or when maintenance is required due to wear or blockage of the screen plates, the dust cover on the top of the screen box must be removed first, and then the bolts fixing the screen plates must be unscrewed one by one to remove the screen plates. This operation method is not only cumbersome and time-consuming, but also requires frequent handling of tools and alignment of bolts during the disassembly process, which increases the labor intensity of the workers and brings inconvenience to the disassembly and replacement of the screen plates. Utility Model Content

[0006] The main purpose of this utility model is to provide a vibration screening mechanism for finished steel nails, which can effectively solve the problems in the background art.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A vibratory screening mechanism for finished steel nails includes a sieve box;

[0009] The screen box is fixedly connected to two sides, and a screen plate is inserted between the two screen plates. A fixed plate is fixedly connected to one side of the screen box. A vertically movable plate is provided above the fixed plate. Two rods are fixedly connected to the top of the movable plate. The rods are inserted into corresponding holes opened on one side of the top of the screen plate. An elastic element for controlling the elastic reset of the movable plate is provided between the fixed plate and the movable plate.

[0010] The front end of the movable plate is provided with a limiting member to restrict the elastic reset of the movable plate.

[0011] Preferably, the bottom of the screen box is provided with a support, a shock-absorbing spring is fixedly connected between the screen box and the support, a vibration motor is installed at the bottom of the screen box to provide vibration force, an outlet for screening and discharging finished steel nails is installed at the bottom of the screen box and away from the vibration motor, a dust cover is fixedly connected to the top of the screen box, and an inlet for entering finished steel nails is installed at the top of the dust cover.

[0012] Preferably, the elastic element includes a guide rod, a compression spring, and a stop block. Two guide rods are fixedly connected to the bottom of the movable plate. The guide rods are inserted into corresponding guide holes opened on the top of the fixed plate. A stop block is fixedly connected to the bottom of the guide rod. The compression spring is sleeved on the outside of the guide rod and is fixedly connected between the opposite surfaces of the movable plate and the fixed plate.

[0013] Preferably, the limiting component includes a fixing block, an L-shaped flap, a rotating rod, and a limiting rod. A set of fixing blocks is fixedly connected to the front end of the movable plate. A set of rotating rods is fixedly connected to the vertical top of the L-shaped flap. The rotating rods are rotatably connected to a rotating hole on one side of the fixing block. A limiting rod is fixedly connected to the horizontal top of the L-shaped flap. The limiting rods are inserted into a limiting hole on the top of the fixing plate between two guide holes.

[0014] Preferably, the screen box has a strip-shaped, horizontally oriented disassembly port on the side away from the discharge port, and slots for inserting the two sides of the screen plate are provided on the opposite surfaces of the two trays, with the slots and the disassembly port being at the same horizontal position.

[0015] Preferably, a handle is fixedly connected to the side of the sieve plate near the card hole.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] In this invention, the movable plate is pulled and its position is limited by a limiting member, causing the insert rod to disengage from the locking hole. Then, the screen plate is pulled out of the screen box through the disassembly port using a handle, thus completing the disassembly of the screen plate. The screen plate to be replaced is then reinserted into the screen box through the disassembly port. After the screen plate is supported by a support plate, the limiting member no longer restricts the movable plate, allowing the movable plate to move upward under the action of the elastic member, so that the insert rod can be inserted into the locking hole to fix the screen plate. This completes the installation and replacement of the screen plate. Therefore, the dust cover does not need to be opened when disassembling and replacing the screen plate, and no wrench or other tools are needed to remove the bolts. The screen plate replacement can be completed by a single person, which not only shortens the replacement time but also reduces the labor intensity of the workers and reduces equipment downtime, thus bringing convenience to the replacement and use of the screen plate on the vibrating screening mechanism. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the sieve box of this utility model;

[0020] Figure 3 This is a schematic diagram of the sieve plate of this utility model;

[0021] Figure 4 This is a schematic diagram showing the disassembled structure on the right side of the sieve box of this utility model.

[0022] In the diagram: 1. Screen box; 2. Support frame; 3. Shock-absorbing spring; 4. Vibration motor; 5. Discharge port; 6. Dust cover; 7. Feed port; 8. Screen plate; 9. Support plate; 10. Slot; 11. Disassembly port; 12. Locking hole; 13. Handle; 14. Fixing plate; 15. Guide hole; 16. Limiting hole; 17. Movable plate; 18. Guide rod; 19. Compression spring; 20. Stop block; 21. Insert rod; 22. Fixing block; 23. Rotating hole; 24. L-shaped flap; 25. Limiting rod. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] like Figure 1 - Figure 4 As shown, a vibratory screening mechanism for finished steel nails includes a screen box 1;

[0025] The screen box 1 has two fixedly connected support plates 9 on both sides, and a screen plate 8 is inserted between the two support plates 9. A fixed plate 14 is fixedly connected to one side of the screen box 1. A vertically movable plate 17 is provided above the fixed plate 14. Two insert rods 21 are fixedly connected to the top of the movable plate 17. The insert rods 21 are inserted into the corresponding card holes 12 opened on one side of the top of the screen plate 8. An elastic element for controlling the elastic reset of the movable plate 17 is provided between the fixed plate 14 and the movable plate 17.

[0026] The front end of the movable plate 17 is provided with a limiting member for restricting the elastic reset of the movable plate 17.

[0027] like Figure 1 As shown, the bottom of the screen box 1 is equipped with a support 2, and a shock-absorbing spring 3 is fixedly connected between the screen box 1 and the support 2. A vibration motor 4 is installed at the bottom of the screen box 1 to provide vibration force. A discharge port 5 for screening and discharging finished steel nails is installed at the bottom of the screen box 1 and away from the vibration motor 4. A dust cover 6 is fixedly connected to the top of the screen box 1, and a feed port 7 for entering finished steel nails is installed at the top of the dust cover 6. The steel nails to be screened enter the screen box 1 through the feed port 7 at the top of the dust cover 6 and fall onto the internal screen plate 8. Under the vibration of the screen box 1, the qualified steel nails, unqualified steel nails and impurities that have been screened will move along the screen plate 8 away from the vibration motor 4 and finally be discharged from the discharge port 5 at the bottom of the screen box 1. The dust cover 6 can cover the top opening of the screen box 1 to prevent steel nail fragments and dust from drifting outward during the screening process, and at the same time avoid external impurities from falling into the screen box 1 and affecting the screening accuracy, so as to realize the vibration screening of finished steel nails.

[0028] like Figure 4 As shown, the elastic element includes guide rods 18, compression springs 19, and stop blocks 20. Two guide rods 18 are fixedly connected to the bottom of the movable plate 17. The guide rods 18 are inserted into the corresponding guide holes 15 opened on the top of the fixed plate 14. The guide holes 15 restrict the movement direction of the guide rods 18, ensuring that the movable plate 17 can only move up and down in the vertical direction. The stop blocks 20 are fixedly connected to the bottom of the guide rods 18 to prevent the guide rods 18 from disengaging from the guide holes 15, ensuring that the movable plate 17 will not separate from the fixed plate 14 during movement. The compression springs 19 are fitted outside the guide rods 18 and are fixedly connected between the opposite surfaces of the movable plate 17 and the fixed plate 14. When the movable plate 17 is moved downward, the compression springs 19 are compressed and store elastic potential energy, which can prevent the spring from twisting or misaligning during compression and reset, ensuring the stability of the elastic function and providing a continuous and uniform reset force for the movable plate 17.

[0029] like Figure 4As shown, the limiting component includes a fixing block 22, an L-shaped flap 24, a rotating rod 25, and a limiting rod 26. A set of fixing blocks 22 are fixedly connected to the front end of the movable plate 17. A set of rotating rods 25 are fixedly connected to the vertical top of the L-shaped flap 24. The rotating rods 25 are rotatably connected to the rotating holes 23 on one side of the fixing blocks 22. The limiting rod 26 is fixedly connected to the horizontal top of the L-shaped flap 24. The limiting rod 26 is limited by the two guide holes 15 opened on the top of the fixing plate 14. The hole 16 is inserted and installed. When it is necessary to fix the position of the movable plate 17, the movable plate 17 is moved down to the designated position, and the L-shaped flap 24 is flipped so that the limiting rod 26 at the top of the L-shaped flap 24 is inserted into the limiting hole 16 of the fixed plate 14. The limiting rod 26 and the limiting hole 16 are used to restrict the movable plate 17 to reset upward. When it is necessary to release the limit, the L-shaped flap 24 is flipped in the opposite direction so that the limiting rod 26 is disengaged from the limiting hole 16, and the movable plate 17 can be reset under the action of the elastic element.

[0030] like Figure 2 and Figure 3 As shown, the screen box 1 has a strip-shaped, horizontally oriented disassembly port 11 on the side away from the discharge port 5, providing a channel for the screen plate 8 to enter and exit. The two support plates 9 have slots 10 on their opposite surfaces for the screen plate 8 to be inserted into from both sides. The slots 10 and the disassembly port 11 are at the same horizontal level. The horizontal alignment of the disassembly port 11 and the slots 10 allows the screen plate 8 to be smoothly inserted or removed along a straight line, avoiding jamming of the screen plate 8 due to positional deviation. This ensures that the screen plate 8 is accurately and stably positioned after insertion. The limiting effect of the slots 10 on both sides of the screen plate 8 ensures that the screen plate 8 remains relatively fixed to the screen box 1 after installation, preventing the screen plate 8 from shifting left or right during screening and affecting screening accuracy. At the same time, the slots 10 can limit the insertion depth of the screen plate 8, ensuring that the locking hole 12 at the top of the screen plate 8 can be accurately aligned with the insertion rod 21 of the movable plate 17, facilitating subsequent fixing operations.

[0031] like Figure 3 As shown, a handle 13 is fixedly connected to the side of the sieve plate 8 near the card hole 12, providing a force point for the operator to insert and remove the sieve plate 8, making it easy to operate by hand.

[0032] The specific operating principle of this steel nail finished product vibration screening mechanism is as follows:

[0033] During the screening of finished steel nails, the finished steel nails to be screened are first poured into the screen box 1 through the feed inlet 7 at the top of the dust cover 6. At this time, the steel nails will fall onto the screen plate 8, which is supported and fixed by the support plate 9. The vibration motor 4 installed at the bottom of the screen box 1 is started. The high-frequency vibration force generated by the vibration motor 4 drives the screen box 1 to vibrate synchronously. The shock-absorbing spring 3 connected between the screen box 1 and the support 2 can effectively buffer the impact of vibration on the support 2 and the ground, avoiding violent shaking of the entire equipment. Under the vibration of the screen box 1, the steel nails on the screen plate 8 will move along the surface of the screen plate. The linear jumping motion allows impurities smaller than the aperture of the sieve plate 8, such as metal shavings and oxide scale, to pass directly through the sieve holes and fall into the bottom of the sieve box 1, eventually being discharged from the discharge port 5 at the bottom of the sieve box 1. Unqualified steel nails with excessively small head diameters or excessively thin rods will also pass through the sieve holes with the vibration and be discharged along with the impurities. Qualified steel nails with the required head diameter will be intercepted by the sieve plate 8 and, under continuous vibration, move towards the side of the sieve box 1 closer to the discharge port 5, eventually being discharged separately from the discharge port 5, thus achieving layered screening of "qualified steel nails - unqualified steel nails - impurities".

[0034] When the sieve plate 8 is damaged or needs to be replaced to accommodate different sizes of steel nails, hold the L-shaped flap 24 and flip it outwards. The rotating rod 25 at the top vertical position of the L-shaped flap 24 will rotate within the rotating hole 23 on the side wall of the fixed block 22, and pull the L-shaped flap 24 downwards. This will cause the movable plate 17 to move downwards. The guide rod 18 at the bottom of the movable plate 17 passes through the guide hole 15 at the bottom of the fixed plate 14, forcing the compression spring 19 fitted outside the guide rod 18 to tighten. The insert rod 21 at the top of the movable plate 17 will be removed from the locking hole 12 at the top of the current screen plate 8 until the L-shaped flap 24 can no longer be pulled. Maintaining the pulling force, the L-shaped flap 24 is flipped inwards and reversed, so that the limiting rod 26 at the top of the L-shaped flap 24 is positioned below the fixed plate 14. Once it can no longer be flipped, the pulling force on the rotating rod 25 is released. At this time, the compression spring 19 will elastically extend and push the movable plate 17 upwards a certain distance, while the limiting rod 26 will insert into the limiting hole 16 and, within the L-shaped flap... The lateral portion of plate 24 acts as a blocking force to prevent the movable plate 17 from continuously moving upward, thus restricting the movable plate 17. Then, the sieve plate 8 is pulled out of the sieve box 1 to one side via handle 13. The sieve plate 8 will be pulled out of the sieve box 1 through the disassembly port 11. After being pulled out, the sieve plate 8 to be used is reinserted into the sieve box 1 through the disassembly port 11 via handle 13. The two sides of the sieve plate 8 will insert into the slots 10 on the side walls of the support plates 9 installed on both sides of the sieve box 1, thus providing support for the sieve plate 8. Then, pull the L-shaped flap 24 downward to disengage the limiting rod 26 from the fixed plate 14, flip the L-shaped flap 24 outward and release the pulling force on the L-shaped flap 24, release the restriction on the movable plate 17, and after the compression spring 19 performs an elastic recovery and extension operation, push the movable plate 17 upward to allow the insertion rod 21 to be inserted into the locking hole 12. In this way, the screen plate 8 can be fixed in the screen box 1 for use, preventing the screen plate 8 from moving out of the screen plate 8 under vibration, thereby facilitating the disassembly and replacement of the screen plate 8.

[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, various improvements can be made to it without departing from the scope of the present utility model, and components can be replaced with equivalents or some technical features can be replaced with equivalents. All such improvements within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vibratory screening mechanism for finished steel nails, comprising a sieve box (1); Its features are: The screen box (1) is fixedly connected to two sides of the screen box (1), and a screen plate (8) is inserted between the two screen plates (9). A fixed plate (14) is fixedly connected to one side of the screen box (1). A movable plate (17) that can move vertically is provided above the fixed plate (14). Two rods (21) are fixedly connected to the top of the movable plate (17). The rods (21) are inserted into the corresponding card holes (12) opened on one side of the top of the screen plate (8). An elastic element for controlling the reset of the movable plate (17) is provided between the fixed plate (14) and the movable plate (17). The front end of the movable plate (17) is provided with a limiting member for restricting the elastic reset of the movable plate (17).

2. The steel nail finished product vibration screening mechanism according to claim 1, characterized in that: The bottom of the sieve box (1) is provided with a support (2), and a shock-absorbing spring (3) is fixedly connected between the sieve box (1) and the support (2). A vibration motor (4) is installed at the bottom of the sieve box (1) to provide vibration force. A discharge port (5) for screening and discharging finished steel nails is installed at the bottom of the sieve box (1) and away from the vibration motor (4). A dust cover (6) is fixedly connected to the top of the sieve box (1), and a feed port (7) for entering finished steel nails is installed at the top of the dust cover (6).

3. The steel nail finished product vibration screening mechanism according to claim 1, characterized in that: The elastic element includes a guide rod (18), a compression spring (19), and a stop block (20). Two guide rods (18) are fixedly connected to the bottom of the movable plate (17). The guide rods (18) are inserted into the corresponding guide holes (15) opened on the top of the fixed plate (14). The stop block (20) is fixedly connected to the bottom of the guide rods (18). The compression spring (19) is fitted on the outside of the guide rods (18) and is fixedly connected between the opposite surfaces of the movable plate (17) and the fixed plate (14).

4. The steel nail finished product vibration screening mechanism according to claim 1, characterized in that: The limiting component includes a fixing block (22), an L-shaped flap (24), a rotating rod (25), and a limiting rod (26). A set of fixing blocks (22) is fixedly connected to the front end of the movable plate (17). A set of rotating rods (25) is fixedly connected to the vertical top of the L-shaped flap (24). The rotating rods (25) are rotatably connected to the rotating hole (23) opened on one side of the fixing block (22). The limiting rod (26) is fixedly connected to the horizontal top position of the L-shaped flap (24). The limiting rod (26) is inserted into the limiting hole (16) opened between the two guide holes (15) on the top of the fixing plate (14).

5. The steel nail finished product vibration screening mechanism according to claim 1, characterized in that: The screen box (1) has a strip-shaped and horizontally oriented disassembly port (11) on the side away from the discharge port (5). The two trays (9) have slots (10) on their opposite surfaces for inserting the two sides of the screen plate (8). The slots (10) and the disassembly port (11) are at the same horizontal position.

6. The steel nail finished product vibration screening mechanism according to claim 1, characterized in that: A handle (13) is fixedly connected to the side of the sieve plate (8) near the card hole (12).

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