Powder falling device based on roller rotating speed and gap control

Abstract

The utility model discloses a powder falling device based on control of the rotating speed and the gap of a roller, which comprises a mounting frame configured to be a mounting carrier, a stock bin mounted on the mounting frame and provided with a V-shaped discharge port at the bottom, and a discharge roller rotatably mounted on the mounting frame and positioned at the discharge port of the stock bin, a plurality of discharge grooves are axially formed in the discharge roller at equal intervals, and the discharge grooves are communicated with the discharge port of the stock bin. The two discharging plates are symmetrically installed on the installation frame to form a V-shaped discharging opening, the fixed roller is rotatably installed on the installation frame, the movable roller is installed on the installation frame through a sliding assembly, the discharging opening is located between the movable roller and the fixed roller, the sliding assembly drives the movable roller to be away from or close to the fixed roller, and therefore the distance between the movable roller and the fixed roller is adjusted. The powder falling amount is accurately controlled, the quality of a powder bed is improved, the phenomenon that a screen is blocked in a traditional device is avoided, and unnecessary manpower resource waste in the production process is reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of powder dropping devices, specifically relating to a powder dropping device based on controlling the rotational speed and gap of the rollers. Background Technology

[0002] The existing powder spreading devices mainly include the following types:

[0003] Downward-pushing powder: The powder hopper and the printing hopper are placed side by side. The powder hopper is lifted up, and then a scraper or roller is used to push the powder in the upper part of the powder hopper to the upper surface of the printing hopper. This structure has high requirements for the type and physical properties of the powder and has high limitations.

[0004] Toner dispensing: The powder hopper is positioned above the printing chamber, and toner is dispensed via ultrasonic or linear vibration devices. Different powders require different screen sizes and vibration frequencies need to be adjusted. The screen condition must be monitored regularly, and clogged screens should be replaced or cleaned promptly. Simultaneously, during printing, as the powder in the hopper decreases and the vibration device affects the process, uncontrollable toner dispensing and segregation can easily occur. Ultimately, this leads to uneven powder bed density, affecting the quality of the finished product. Utility Model Content

[0005] The purpose of this invention is to provide a powder-feeding device based on controlling the rotational speed and gap of the rollers, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a powder-discharging device based on controlling the rotational speed and gap of the rollers, comprising...

[0007] Mounting bracket, configured as a mounting carrier;

[0008] The hopper is mounted on a mounting frame, and its bottom is designed with a V-shaped discharge port.

[0009] A discharge roller is rotatably mounted on a mounting frame and located at the discharge port of the hopper. Multiple discharge grooves are equidistantly opened on the discharge roller along the axial direction.

[0010] Two discharge plates are symmetrically installed on the mounting frame, forming a V-shaped discharge port;

[0011] A fixed roller is rotatably mounted on a mounting frame, and a movable roller is mounted on the mounting frame via a sliding assembly. The discharge port is configured such that the movable roller is located between the fixed roller and the movable roller. The sliding assembly drives the movable roller away from / closer to the fixed roller, thereby adjusting the distance between the movable roller and the fixed roller.

[0012] Preferably, a driven wheel is installed at one end of both the fixed roller and the discharge roller, and the driven wheel is driven by a motor to drive the fixed roller and the discharge roller to rotate.

[0013] In any of the above embodiments, it is preferred that the moving roller is connected to a motor, and the motor drives it to rotate.

[0014] Preferably, any of the above solutions also includes a light roller, which is mounted on a mounting frame and has one end connected to a motor, which drives it to rotate.

[0015] In any of the above embodiments, the preferred embodiment is that the sliding assembly includes a movable plate, a slider, and a slide rail. The slide rail is mounted on a mounting frame, the slider is limited on the slide rail and slides along the slide rail, the movable plate is mounted on the slider, and the movable roller is mounted on the movable plate.

[0016] Preferably, any of the above solutions further includes an adjustment component configured to drive the sliding component to move, comprising a rotating block, a fixed block, and a top block. The fixed block is mounted on a mounting bracket and has a hole with threads on the inner wall of the hole. The outer surface of the rotating block is threaded and is rotatably connected to the fixed block via the threads. The top block is located at one end of the rotating block, and its other end is connected to a movable plate.

[0017] The technical effects and advantages of this utility model are as follows: This powder dropping device based on controlling the rotation speed and gap of the rollers adjusts the amount of powder dropping by adjusting the rotation speed of the discharge roller, and adjusts the gap between the moving roller and the fixed roller by adjusting the adjustment component, as well as the rotation speed of the fixed roller to adjust the amount of powder dropping, thereby accurately controlling the amount of powder dropping and improving the quality of the powder bed.

[0018] To avoid screen clogging in traditional equipment and reduce unnecessary waste of human resources in the production process;

[0019] To avoid segregation phenomena that occur in traditional equipment and improve the uniformity of powder bed density. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0022] Figure 3 This is a structural schematic diagram of a portion of the present utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the discharge roller and discharge plate of this utility model;

[0024] Figure 5 This is a cross-sectional view of the main view of this utility model.

[0025] In the diagram: 1. Hopper; 2. Mounting frame; 3. Adjustment assembly; 31. Rotating block; 32. Fixed block; 33. Top block; 4. Moving roller; 5. Fixed roller; 6. Smooth roller; 7. Movable plate; 8. Sliding block; 9. Slide rail; 10. Driven wheel; 11. Discharge roller; 12. Discharge chute; 13. Discharge plate. Detailed Implementation

[0026] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0029] This utility model provides, for example Figure 1-5 The powder-discharging device shown includes a control roller speed and gap.

[0030] Mounting bracket 2 is a sheet metal part configured as a mounting carrier. It has a slot on it, into which two vertical structural components are placed. These structural components are box-shaped structures with openings at the top and bottom. Figure 5 As shown, the two ends of the structural component are bolted to the mounting bracket 2, and there are openings at the top and bottom. The hopper 1 is fixed to the structural component by bolts, and the V-shaped discharge port of the hopper 1 is located at the upper opening. The two discharge plates 13 are also bolted to the structural component and are installed symmetrically to form a V-shaped discharge port, which is located at the lower opening. The discharge roller 11 is mounted to the structural component by bearings. Three discharge grooves 12 are equidistantly opened on the discharge roller 11 along the axial direction, and the uppermost discharge groove 12 is located at the discharge port of the hopper 1.

[0031] The fixed roller 5 is rotatably mounted on the mounting frame 2 via bearings.

[0032] The moving roller 4 is mounted on the mounting frame 2 via a sliding assembly. It is configured such that the discharge port is located between the moving roller 4 and the fixed roller 5. The sliding assembly drives the moving roller 4 away from / closer to the fixed roller 5, thereby adjusting the distance between the moving roller 4 and the fixed roller 5. One end of the fixed roller 5 and the discharge roller 11 is equipped with a driven wheel 10. The motor drives the two driven wheels 10 via a belt, thereby driving the fixed roller 5 and the discharge roller 11 to rotate.

[0033] The light roller 6 is mounted on the mounting frame 2, and one end is connected to the motor, which drives it to rotate.

[0034] The moving roller 4 is connected to the motor, which drives it to rotate.

[0035] The sliding assembly includes a movable plate 7, a slider 8, and a slide rail 9. The slide rail 9 is fixed to the mounting bracket 2 by bolts. The slider 8 is limited on the slide rail 9 and slides along the slide rail 9. The movable plate 7 is fixed to the slider 8 by bolts. The movable roller 4 is rotatably mounted on the movable plate 7 through a bearing.

[0036] It also includes an adjustment component 3, configured to drive the sliding component to move, including a rotating block 31, a fixed block 32 and a top block 33. The fixed block 32 is fixed to the mounting bracket 2 by bolts and has a hole with threads on the inner wall of the hole. The outer surface of the rotating block 31 has threads and is rotatably connected to the fixed block 32 by the threads. One end of the top block 33 is fixed to the rotating block 31 and the other end is fixed to the movable plate 7.

[0037] During use, the powder-feeding device, which controls the rotation speed and gap of the rollers, involves adding powder into the hopper 1. Under normal conditions, the powder flows into the discharge trough 12 on the discharge roller 11. As the discharge roller 11 rotates, the powder in the discharge trough 12 falls down and reaches above the moving roller 4 and the fixed roller 5. The moving roller 4 and the fixed roller 5 rotate, and the powder discharged by the discharge roller 11 passes through the gap between the moving roller 4 and the fixed roller 5, completing the powder-feeding action. Finally, the powder-feeding device moves horizontally, while the smooth roller 6 rotates to flatten the fallen powder, completing the entire powder-spreading action. When it is necessary to adjust the size of the gap between the moving roller 4 and the fixed roller 5, the rotating block 31 is rotated to drive the movable plate 7 to move along the slide rail 9. Since the moving roller 4 is mounted on the movable plate 7, the moving roller 4 is moved, thereby adjusting the distance between the moving roller 4 and the fixed roller 5.

[0038] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A powder-feeding device based on controlling the rotational speed and gap of the rollers, characterized in that: include Mounting bracket (2), configured as a mounting carrier; The hopper (1) is installed on the mounting frame (2), and its bottom is set as a V-shaped discharge port; The discharge roller (11) is rotatably mounted on the mounting frame (2) and located at the discharge port of the hopper (1). Multiple discharge grooves (12) are equidistantly opened on the discharge roller (11) along the axial direction. Two discharge plates (13) are symmetrically installed on the mounting frame (2) to form a V-shaped discharge port; A fixed roller (5) is rotatably mounted on a mounting frame (2), and a movable roller (4) is mounted on the mounting frame (2) via a sliding assembly. The discharge port is configured such that the discharge port is located between the movable roller (4) and the fixed roller (5). The sliding assembly drives the movable roller (4) away from / closer to the fixed roller (5), thereby adjusting the distance between the movable roller (4) and the fixed roller (5).

2. The powder-feeding device based on controlling the rotational speed and gap of the rollers according to claim 1, characterized in that: Both the fixed roller (5) and the discharge roller (11) are equipped with driven wheels (10) at one end. The driven wheels (10) are driven by a motor, which in turn drive the fixed roller (5) and the discharge roller (11) to rotate.

3. The powder-discharging device based on controlling the rotational speed and gap of the rollers according to claim 1, characterized in that: The moving roller (4) is connected to the motor and is driven to rotate by the motor.

4. The powder-discharging device based on controlling the rotational speed and gap of the rollers according to claim 1, characterized in that: It also includes a light roller (6), which is mounted on the mounting frame (2) and one end is connected to the motor, which drives it to rotate.

5. The powder-discharging device based on controlling the rotational speed and gap of the rollers according to claim 1, characterized in that: The sliding assembly includes a movable plate (7), a slider (8), and a slide rail (9). The slide rail (9) is mounted on the mounting bracket (2). The slider (8) is limited on the slide rail (9) and slides along the slide rail (9). The movable plate (7) is mounted on the slider (8), and the moving roller (4) is mounted on the movable plate (7).

6. A powder-discharging device based on controlling the rotational speed and gap of the rollers according to claim 5, characterized in that: It also includes an adjustment component (3) configured to drive the sliding component to move, including a rotating block (31), a fixed block (32) and a top block (33). The fixed block (32) is mounted on the mounting bracket (2) and has a hole with threads on the inner wall of the hole. The outer surface of the rotating block (31) is provided with threads and is rotatably connected to the fixed block (32) through the threads. The top block (33) is located at one end of the rotating block (31) and its other end is connected to the movable plate (7).

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