A steel ball screening machine

Abstract

The utility model discloses a kind of steel ball screening machines, aiming at the mode of manual screening of existing, but manual screening is high in labor intensity, easy to fatigue, and low in work efficiency, and the intensity, frequency and amplitude of manual operation are difficult to keep constant, which can lead to the problems of insufficient screening, screening leakage or uneven distribution of steel balls in screen, and the following scheme is proposed, including rack, the rack is fixedly connected with water tank, one side of the rack is fixedly connected with electric control box, one side of the electric control box is fixedly connected with fixed plate, lifting mechanism is equipped on the fixed plate, mobile plate is fixedly connected on lifting mechanism, swing mechanism is equipped on the mobile plate, positioning plate is fixedly connected on swing mechanism, the utility model controls lifting mechanism and swing mechanism by electric control system, completely replaces the action of traditional worker hand-held screen repeatedly, laborious shaking, improves work efficiency.

Description

Technical Field

[0001] This utility model relates to a bead screening machine, and more specifically, to a steel bead screening machine. Background Technology

[0002] In existing production technologies, the screening of small spherical parts such as steel balls, especially when precision sorting based on size is required, is generally done manually. Operators need to place the steel balls to be screened on a handheld or fixed screen and manually shake, vibrate, or roll them to allow steel balls that meet the size requirements to pass through the screen holes, while steel balls that are oversized are left inside the screen, thus achieving the purpose of sorting.

[0003] However, manual screening is labor-intensive, easy to get tired, and inefficient. It is difficult to keep the force, frequency and amplitude of manual operation constant, which may lead to problems such as insufficient screening, missed screening or uneven distribution of steel balls in the screen.

[0004] Therefore, we propose a steel ball screening machine. Utility Model Content

[0005] One objective of this invention is to provide a new technical solution for a steel ball screening machine.

[0006] According to a first aspect of the present invention, a steel ball screening machine is provided, comprising a frame, a water tank fixedly connected to the frame, an electrical control box fixedly connected to one side of the frame, a fixed plate fixedly connected to one side of the electrical control box, a lifting mechanism provided on the fixed plate, a movable plate fixedly connected to the lifting mechanism, a swing mechanism provided on the movable plate, a positioning plate fixedly connected to the swing mechanism, and a screen for screening steel balls being mounted on the top of the positioning plate.

[0007] Optionally, the lifting mechanism includes a fixed base, a first motor, and a lead screw. The fixed base is fixedly connected to the top of the fixed plate, the first motor is fixedly connected to the fixed base, the output shaft of the first motor is fixedly connected to the top end of the lead screw through a coupling, a lead screw nut is threaded onto the lead screw, the lead screw nut is fixedly embedded in the moving plate, and the bottom end of the lead screw is rotatably connected to the connecting plate through a bearing on the frame.

[0008] Optionally, the swing mechanism includes a second motor, a swing plate, an arc plate, and a suspension rod. The second motor is fixedly connected to the moving plate via a motor mount. The output shaft of the second motor is fixedly connected to the swing plate. The swing plate is fixedly connected to the arc plate. There are two suspension rods. The top ends of the two suspension rods are fixedly connected to the arc plate, and the bottom ends of the two suspension rods are fixedly connected to the top of the positioning plate.

[0009] Optionally, an upper sensing base is fixedly connected to one side of the movable plate, and a lower sensing base is fixedly connected to the top of the connecting plate. Both the upper and lower sensing bases are equipped with sensors.

[0010] Optionally, a plurality of sliding rods are fixedly connected between the fixed plate and the connecting plate, and a plurality of sliding sleeves are fixedly connected to the movable plate, the sliding sleeves being slidably fitted onto the sliding rods.

[0011] Optionally, the bottom of the screen is fixedly connected with multiple positioning posts, and the top of the positioning plate is provided with multiple positioning holes that are adapted to the positioning posts, and the positioning posts and positioning holes are interference fit.

[0012] Optionally, an arc-shaped slide rail is fixedly connected to the movable plate, and multiple sliders are fixedly connected to the arc-shaped slide rail. Each slider is equipped with a roller, which is rotatably connected to the arc-shaped slide rail.

[0013] In practical use, first, an appropriate amount of water is injected into the water tank. Then, the steel balls to be screened are poured into the screen. Subsequently, the first motor is started by switching on the control box. The first motor can rotate the lead screw, and under the action of the lead screw nut, the moving plate can move downward. When the lower induction seat senses the upper induction seat, the first motor is turned off. At this time, the screen is completely immersed in the water tank. Then, the second motor is started. The second motor moves back and forth in both directions, which can make the swing plate drive the arc plate and the hanging rod to swing back and forth in the arc guide rail. Steel balls that meet the size requirements pass through the screen holes, while steel balls that are oversized are left in the screen, thereby achieving the purpose of sorting. Since the screen is secured to the positioning plate by the positioning post, the screen can be removed by pulling it upwards, allowing different screens to be used for different steel balls.

[0014] According to one embodiment of this disclosure, the lifting mechanism and the swing mechanism are controlled by an electronic control system, which completely replaces the traditional action of relying on workers to repeatedly and laboriously shake the sieve by hand. The lifting mechanism can stably immerse a large number of steel balls in water, and the continuous and uniform swinging power provided by the swing mechanism makes the screening process faster and more thorough, greatly increasing the output per unit time. The screen and the positioning plate are connected by an interference fit between the positioning pin and the positioning hole, which allows for quick screen replacement for different steel balls.

[0015] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0017] Figure 1 This is a schematic diagram of the main structure of a steel ball screening machine in one embodiment; Figure 2 This is a top view schematic diagram of a steel ball screening machine in one embodiment; Figure 3 This is a schematic diagram of the swing mechanism structure of a steel ball screening machine in one embodiment; Figure 4 This is a schematic diagram of the lifting mechanism structure of a steel ball screening machine in one embodiment; Figure 5 This is a schematic diagram of the arc-shaped slide rail and slider structure of a steel ball screening machine in one embodiment.

[0018] The following are marked in the diagram: 1. Frame; 2. Water tank; 3. Electrical control box; 4. Fixed plate; 5. Moving plate; 6. Positioning plate; 7. Screen; 8. Fixed seat; 9. First motor; 10. Lead screw; 11. Upper induction seat; 12. Lower induction seat; 13. Connecting plate; 14. Slide rod; 15. Second motor; 16. Swing plate; 17. Arc plate; 18. Hanging rod; 19. Slider; 20. Sliding sleeve; 21. Arc slide rail. Detailed Implementation

[0019] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0020] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0021] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0022] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0023] like Figures 1 to 5 As shown, a steel ball screening machine includes a frame 1, a water tank 2, an electrical control box 3, a fixed plate 4, a lifting mechanism, a moving plate 5, a swinging mechanism, a positioning plate 6, and a screen 7.

[0024] A water tank 2 is fixedly connected to the top of the frame 1 to hold the screening medium (usually water). The buoyancy and resistance of the water can effectively separate the steel balls and reduce noise and wear during the screening process. An electrical control box 3 is fixedly connected to one side of the frame 1. It integrates electrical control components such as PLC, frequency converter, and relay to control the automated operation of the entire equipment. A fixing plate 4 is fixedly connected to one side of the electrical control box 3 to provide a stable mounting base for the lifting mechanism.

[0025] like Figures 1 to 5 As shown, the lifting mechanism is mounted on the fixed plate 4, which is used to drive the screen 7 into or out of the water tank 2.

[0026] In this embodiment, the lifting mechanism includes a fixed base 8, a first motor 9, and a lead screw 10. The fixed base 8 is fixedly connected to the top of the fixed plate 4 by bolts. The first motor 9 (which is a servo motor or stepper motor with a braking function) is fixedly connected to the fixed base 8 by bolts. The output shaft of the first motor 9 is fixedly connected to the top of the lead screw 10 by a coupling, thereby accurately transmitting the rotational motion of the motor to the lead screw 10. A lead screw nut (not shown separately in the figure) is threaded onto the lead screw 10, and the lead screw nut is fixedly embedded in the moving plate 5.

[0027] Secondly, to ensure the stability of the lead screw 10, a connecting plate 13 is also fixedly connected to the frame 1, and the bottom end of the lead screw 10 is rotatably connected to the connecting plate 13 through a bearing.

[0028] In order to precisely guide the lifting and lowering movement of the movable plate 5 and prevent it from rotating and swaying, multiple (usually two or four, arranged symmetrically) slide rods 14 are fixedly connected between the fixed plate 4 and the connecting plate 13. Correspondingly, multiple sliding sleeves 20 (such as linear bearings) are fixedly connected to the movable plate 5. The sliding sleeves 20 are slidably mounted on the sliding rod 14, forming a stable sliding pair.

[0029] It should be noted that, in order to achieve automatic control of the lifting stroke, an upper sensing seat 11 is fixedly connected to one side of the moving plate 5, and a lower sensing seat 12 is fixedly connected to the top of the connecting plate 13. Both the upper sensing seat 11 and the lower sensing seat 12 are equipped with sensors (such as proximity switches or photoelectric sensors). When the moving plate 5 descends to align the upper sensing seat 11 with the lower sensing seat 12, the sensing signal is triggered, and the controller in the electrical control box 3 will immediately shut down the first motor 9, so that the screen 7 stops precisely in the working position completely submerged in the water tank 2.

[0030] Furthermore, the movable plate 5 is equipped with a swing mechanism for driving the screen 7 to reciprocate in the water. The swing mechanism includes a second motor 15, a swing plate 16, an arc plate 17, and a suspension rod 18. The second motor 15 (a reversible geared motor) is fixedly connected to the movable plate 5 through a motor mount. The output shaft of the second motor 15 is fixedly connected to the swing plate 16. The swing plate 16 and the arc plate 17 are fixedly connected by bolts or integrally formed. There are two suspension rods 18. The top ends of the two suspension rods 18 are fixedly connected to the arc plate 17 by threads or welding. The bottom ends of the two suspension rods 18 are fixedly connected to the top of the positioning plate 6.

[0031] To ensure the smoothness of the swing process and the accuracy of the trajectory, an arc-shaped slide rail 21 is fixedly connected to the moving plate 5, and multiple sliders 19 are fixedly connected to the arc-shaped plate 17. Each slider 19 is equipped with a roller (i.e., a bearing), which is rolled on the arc-shaped slide rail 21. This transforms the cantilever motion of the swing plate 16 into a stable circular arc motion constrained by the arc-shaped slide rail 21, greatly reducing vibration and sway.

[0032] Furthermore, the top positioning plate 6 is fitted with a screen 7 for screening steel balls. To enable quick replacement of the screen 7, multiple positioning posts (not shown in the figure) are fixedly connected to the bottom of the screen 7. The top of the positioning plate 6 is provided with multiple positioning holes (not shown in the figure) that are compatible with the positioning posts.

[0033] During installation, align the positioning pin at the bottom of the screen 7 with the positioning pin and insert it into the positioning hole on the positioning plate 6. Reliable positioning and locking are achieved through interference fit. When replacement is needed, simply pull the screen 7 out by applying upward force. The operation is simple.

[0034] However, as is well known to those skilled in the art, the working principle and wiring method of the electrical control box 3, the first motor 9, the upper induction seat 11, the lower induction seat 12 and the second motor 15 are commonplace and belong to conventional means or common knowledge. Therefore, they will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0035] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not intended to limit the actual dimensions, but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions. Although some specific embodiments of this utility model have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this utility model. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of this utility model. The scope of this utility model is defined by the appended claims.

Claims

1. A steel ball screening machine, characterized in that: Includes a frame (1), on which a water tank (2) is fixedly connected, and an electrical control box (3) is fixedly connected to one side of the frame (1). A fixed plate (4) is fixedly connected to one side of the electrical control box (3). A lifting mechanism is provided on the fixed plate (4), and a moving plate (5) is fixedly connected to the lifting mechanism. A swing mechanism is provided on the moving plate (5), and a positioning plate (6) is fixedly connected to the swing mechanism. A screen (7) for screening steel balls is installed on the top of the positioning plate (6).

2. The steel ball screening machine according to claim 1, characterized in that: The lifting mechanism includes a fixed base (8), a first motor (9), and a lead screw (10). The fixed base (8) is fixedly connected to the top of the fixed plate (4). The first motor (9) is fixedly connected to the fixed base (8). The output shaft of the first motor (9) is fixedly connected to the top of the lead screw (10) through a coupling. A lead screw nut is threaded onto the lead screw (10). The lead screw nut is fixedly embedded in the moving plate (5). A connecting plate (13) is fixedly connected to the frame (1). The bottom end of the lead screw (10) is rotatably connected to the connecting plate (13) through a bearing.

3. A steel ball screening machine according to claim 1, characterized in that: The swing mechanism includes a second motor (15), a swing plate (16), an arc plate (17), and a hanging rod (18). The second motor (15) is fixedly connected to the moving plate (5) through a motor base. The output shaft of the second motor (15) is fixedly connected to the swing plate (16). The swing plate (16) is fixedly connected to the arc plate (17). There are two hanging rods (18). The top ends of the two hanging rods (18) are fixedly connected to the arc plate (17), and the bottom ends of the two hanging rods (18) are fixedly connected to the top of the positioning plate (6).

4. A steel ball screening machine according to claim 2, characterized in that: The upper sensing seat (11) is fixedly connected to one side of the movable plate (5), and the lower sensing seat (12) is fixedly connected to the top of the connecting plate (13). Both the upper sensing seat (11) and the lower sensing seat (12) are equipped with sensors.

5. A steel ball screening machine according to claim 2, characterized in that: Multiple sliding rods (14) are fixedly connected between the fixed plate (4) and the connecting plate (13), and multiple sliding sleeves (20) are fixedly connected to the moving plate (5). The sliding sleeves (20) are slidably sleeved on the sliding rods (14).

6. A steel ball screening machine according to claim 4, characterized in that: The bottom of the screen (7) is fixedly connected with multiple positioning posts, and the top of the positioning plate (6) is provided with multiple positioning holes that are adapted to the positioning posts. The positioning posts and positioning holes are interference fit.

7. A steel ball screening machine according to claim 3, characterized in that: An arc-shaped slide rail (21) is fixedly connected to the movable plate (5), and a plurality of sliders (19) are fixedly connected to the arc-shaped plate (17). The sliders (19) are provided with rollers, which are tumblingly connected to the arc-shaped slide rail (21).

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