A packaging device that allows material to pass through the slicing path of a rotating powder tray.

Abstract

This invention provides a packaging device that feeds material along the slicing path of a rotating powder tray. It comprises a material belt pulled by a traction mechanism, a heating mechanism, and an annular powder trough driven by a motor. Several evenly arranged components to be packaged adhere to the material belt. Turning mechanisms are located on both sides of the annular powder trough to direct the material belt into and out of the trough. After passing through the heating mechanism, the material belt enters the annular powder trough and forms a wrapping angle against the inner ring of the trough as it moves. This invention operates continuously using a strip-shaped material movement method. The powder adheres to the components to be packaged in a relatively static manner through the annular powder trough and the material belt, resulting in dust-free operation, energy saving, environmental friendliness, better packaging effect, higher efficiency, and reduced production costs.

Description

Technical fields:

[0001] This invention relates to the field of electronic component manufacturing equipment technology, and specifically to a packaging device that allows material to pass through the slicing path of a rotating powder tray. Background technology:

[0002] Electronic components such as varistors, thermistors, and ceramic capacitors require heating during production to melt insulating powder onto their outer surface. This process involves multiple heating and melting processes to form a uniform insulating layer. For example, Chinese utility model patent CN1792470A describes a method where, after two leads are soldered to an electronic chip to form the component to be encapsulated, rows of these components are heated and placed in a fluidized bed. Airflow then forces insulating powder onto the components for encapsulation. However, this production method has drawbacks. Airflow blowing of powder can easily result in irregular insulating paint spots on the leads of the encapsulated electronic components, potentially causing connection failures during installation and hindering the component's performance. Furthermore, airflow blowing consumes significant energy, and the large dynamic movement of the powder can lead to uneven encapsulation. Summary of the Invention:

[0003] The purpose of this invention is to provide a packaging device that feeds material along the tangential path of a rotating powder tray, addressing the limitations of existing technologies. This device employs a relatively static, rotating packaging method, eliminating the need for airflow assistance, resulting in better packaging performance, higher efficiency, and greater economy.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This invention is a packaging device that allows material to pass through the slicing path of a rotating powder tray. It has a material belt pulled by a traction mechanism, a heating mechanism, and an annular powder trough driven by a motor. Several uniformly arranged components to be packaged are adhered to the material belt. A turning mechanism is provided on both sides above the annular powder trough to turn the material belt to enter and exit the annular powder trough. After passing through the heating mechanism, the material belt enters the annular powder trough and forms a wrapping angle with the inner ring of the annular powder trough as it moves with the annular powder trough.

[0006] Furthermore, the vertical height of the inner ring of the annular powder trough should be higher than that of the outer ring.

[0007] Furthermore, the steering mechanism consists of inclined guide wheels and is equipped with a lifting mechanism.

[0008] Preferably, the material belt is adjusted from a horizontal state to a longitudinal state by a steering mechanism and travels along the inner ring of the annular powder trough.

[0009] Furthermore, a powder scraper is provided in the annular powder trough.

[0010] Furthermore, an automatic feeder is also installed on the annular powder trough.

[0011] Preferably, the scraper is located outside the arc-shaped area covered by the corner.

[0012] Preferably, the wrap angle is less than 300°.

[0013] The beneficial effects of this invention are as follows: It operates continuously using a strip-shaped material conveyor system. Electronic components are encapsulated by a concentric, relatively static arrangement between the annular powder trough and the material strip, allowing the powder to adhere to the component to be encapsulated. After multiple cycles of heating and powder deposition, a uniform insulating layer is formed at the work site. Compared to traditional powder deposition structures, it eliminates the need for airflow assistance, and the concentric, relatively static encapsulation of the material strip and the annular powder trough avoids dust generation. It is highly efficient, energy-saving, and environmentally friendly, and better prevents powder from flowing onto the pins of electronic components, resulting in a superior encapsulation effect. Attached image description:

[0014] Figure 1 This is a structural schematic diagram relating to the present invention.

[0015] In the above attached diagram: 1. Material belt; 2. Heating mechanism; 3. Annular powder trough; 4. Steering mechanism; 5. Powder scraper; 6. Automatic feeder. Detailed implementation method:

[0016] The present invention will now be described in further detail with reference to the accompanying drawings.

[0017] Reference Figure 1 As shown, a packaging device that feeds material along the cross-sectional path of a rotating powder tray includes a material belt 1 pulled by a traction mechanism, a heating mechanism 2, and an annular powder trough 3 driven by a motor. Several uniformly arranged components to be packaged are adhered to the material belt 1. The components to be packaged are electronic components with two leads and chips soldered to their ends, such as thermistors, varistors, ceramic capacitors, etc. The leads of the electronic components are adhered to the material belt 1 with adhesive tape. The material belt 1 can be moved by unwinding and rewinding traction. After being heated by the heating mechanism 2, it enters the annular powder trough 3 to melt and coat insulating powder to form an insulating layer.

[0018] Specifically, a turning mechanism 4 is provided on both sides above the annular powder trough 3 to turn the material belt 1 to enter and exit the annular powder trough 3. Preferably, the material belt 1 is pulled horizontally by the traction mechanism. At this time, the part to be sealed is also horizontal. When entering the annular powder trough 3, the end of the part to be sealed needs to be inserted into the insulating powder in the annular powder trough 3. Therefore, the material belt 1 is adjusted to a longitudinal state by the turning mechanism 4, and then it is attached to the inner ring of the annular powder trough 3 to form a wrapping angle and move with the annular powder trough 3.

[0019] The steering mechanism 4 needs to be installed on both sides above the annular powder trough 3. The steering mechanism 4 is preferably an inclined guide wheel, which provides a sliding contact steering pressure when the material belt 1 enters and exits the annular powder trough 3, so that the material belt 1 can smoothly turn to enter and exit the annular powder trough 3.

[0020] The steering mechanisms 4 on both sides need to be kept at the same height so that the material belt 1 at the corner of the annular powder trough 3 can move horizontally, so that the position of the end of each part to be sealed is uniform when the insulating powder is inserted, and the sealing position is uniform.

[0021] To accommodate packages of different sizes, the steering mechanism 4 should be equipped with a lifting mechanism (not shown in the figure), such as a lifting track adjustment mechanism. The vertical height of the inner ring of the annular powder trough 3 should be higher than that of the outer ring, so that the steering mechanism 4 can adjust the height and thus control the vertical position of the material belt 1 in the annular powder trough 3 against the inner ring, thereby controlling the powder absorption depth of the package.

[0022] The steering mechanism 4 can also move horizontally on the worktable, thus controlling the wrap angle of the material belt 1 in the annular powder trough 3. If the two steering mechanisms 4 are symmetrically arranged on the left and right sides of the annular powder trough 3, the wrap angle is 180°. If the angle between the two steering mechanisms 4 and the center position of the annular powder trough 3 is 60°, the wrap angle is 300°. The wrap angle of the material belt 1 in the annular powder trough 3 determines the welding time of the packaged part. The larger the wrap angle, the longer the welding time, which is suitable for welding different sizes of packages.

[0023] The annular powder trough 3 is equipped with a powder scraper 5, which is located on the powder surface of the annular powder trough 3. When the annular powder trough 3 rotates, the powder scraper 5 will continuously push the powder flat to avoid pits at the insertion position of the packaged item, thus avoiding affecting the subsequent packaging of the packaged item by the powder.

[0024] The scraper rod 5 is located outside the arc-shaped area covered by the corner of the package. This arc-shaped area is the region between the inner ring of the corner and the corresponding outer ring. In this area, since the part to be packaged is still within the powder layer, even with the scraper rod 5 pushing the powder, it's not conducive to filling the pits. Therefore, the scraper rod 5 is positioned outside this area. Furthermore, when the powder in the annular powder trough 3 rotates to the outside of the arc-shaped area covered by the corner, the resulting pit is quickly smoothed out by the scraper rod 5. Preferably, a corner angle of less than 300° is sufficient for the deposition time of most models.

[0025] The annular powder trough 3 is also equipped with an automatic feeder 6, which can automatically replenish insulating powder. The automatic feeder 6 can be set to start replenishing intermittently, or replenishment can be initiated when a sensor detects that the material is insufficient. Automatic feeders 6 are widely used in existing technologies and will not be described in detail here.

[0026] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. The technical scope of this invention is not limited to the contents of the specification. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A packaging device that allows material to pass through the sectional path of a rotating powder tray, characterized in that: The device comprises a material belt (1) pulled by a traction mechanism, a heating mechanism (2), and an annular powder trough (3) driven by a motor. Several evenly arranged packaging components are adhered to the material belt (1). A turning mechanism (4) is provided on both sides above the annular powder trough (3) to turn the material belt (1) and allow it to enter and exit the annular powder trough (3). After passing through the heating mechanism (2), the material belt (1) enters the annular powder trough (3), and the material belt (1) adheres to the inner ring of the annular powder trough (3) to form a wrap angle as it travels with the annular powder trough (3). The wrap angle is less than 300°. The vertical height of the inner ring of the annular powder trough (3) is higher than that of the outer ring. The steering mechanism (4) is an inclined guide wheel and is equipped with a lifting mechanism. The material belt (1) is adjusted from a horizontal state to a longitudinal state by the steering mechanism (4) and travels along the inner ring of the annular powder trough (3). The electronic components are encapsulated by the annular powder trough (3) and the material belt (1) in a relatively static state of concentric circles, so that the powder adheres to the component to be encapsulated. After the material belt (1) is heated and the powder is melted and coated multiple times, a uniform insulating layer can be formed at the working position.

2. The encapsulation device for conveying material along the sectional path of a rotating powder tray according to claim 1, characterized in that: The annular powder trough (3) is equipped with a powder scraper (5).

3. The encapsulation device for conveying material along the sectional path of a rotating powder tray according to claim 2, characterized in that: An automatic feeder (6) is also provided on the annular powder trough (3).

4. The encapsulation device for conveying material along the sectional path of a rotating powder tray according to claim 2, characterized in that: The powder scraper (5) is located outside the arc-shaped area covered by the corner.

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