Powder coating and laminating device for aluminum nitride green body sintering machine

Abstract

The utility model provides a powder coating and laminating device for an aluminum nitride green body sintering machine, which comprises a machine body, a first conveying belt arranged in the machine body, a plurality of supporting plates conveyed on the first conveying belt, a powder coating plate arranged at the tail end of the first conveying belt, a spraying head and a second conveying belt arranged above the powder coating plate, and a laminating bracket arranged at the tail end of the powder coating plate, two rows of supporting rods are vertically arranged on the two sides of the lamination support, limiting holes corresponding to the supporting rods in position and number in a one-to-one mode are formed in the two sides of the supporting plates, a discharging port is formed in the upper portion of the lamination support, discharging plates are rotationally arranged on the two sides of the discharging port, and baffles are arranged at the ends, away from the powder coating plates, of the discharging plates. According to the powder coating and lamination device for the aluminum nitride green body sintering machine, the green body sheets conveyed by the first conveying belt are automatically sprayed by the spraying head, and then the green body sheets are stacked through mutual cooperation of the second conveying belt, the discharging plate and the lamination support; and finally, the stacked green body sheets are conveyed into the vacuum drying box through the third conveying belt to be subjected to flattening and aging treatment, the automation degree is high, and the production efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum nitride sintering, in particular to a powder coating and lamination device for an aluminum nitride green body sintering machine. Background Art

[0002] Aluminum nitride ceramic substrates have high thermal conductivity, low expansion coefficient, high strength, high temperature resistance, chemical corrosion resistance, high resistivity, and low dielectric loss. They are ideal large-scale integrated circuit heat dissipation substrates and packaging materials. Existing ceramic substrates usually need to be powdered during the preparation process, that is, a layer of anti-sticking powder is applied on the surface of the blank to prevent the ceramic substrates from sticking together during sintering. However, the traditional powdering method usually uses manual feeding, which makes the production efficiency low. Utility Model Content

[0003] The technical problem to be solved by the utility model is: in order to overcome the shortcoming of low production efficiency of manual powder coating in the prior art, the utility model provides a powder coating and lamination device for an aluminum nitride green body sintering machine.

[0004] The technical solution to be adopted by the utility model to solve its technical problems is: a powder coating and stacking device for an aluminum nitride green body sintering machine, comprising a machine body, a first conveyor belt is arranged inside the machine body, a plurality of support plates for carrying green sheets are conveyed on the first conveyor belt, a powder coating plate is arranged at the end of the first conveyor belt, a spraying head and a second conveyor belt are arranged above the powder coating plate, the second conveyor belt is arranged on the side of the spraying head away from the first conveyor belt, a stacking bracket is arranged at the end of the powder coating plate, two rows of support rods are vertically arranged on both sides of the stacking bracket, limiting holes corresponding to the positions and quantities of the support rods are arranged on both sides of the support plate, a discharge port is arranged above the stacking bracket, discharge plates are rotatably arranged on both sides of the discharge port, and a baffle is arranged at the end of the discharge plate away from the powder coating plate.

[0005] The aluminum nitride billet roll is punched and sheared into green sheets of a certain size and then transferred to the support plate. The first conveyor belt conveys the support plate carrying the green sheets into the machine body. After the support plate reaches the powder coating plate, the relevant sensor detects the support plate (such as an infrared sensor), and the spray head applies a layer of isolation powder to the green sheets on the support plate; after applying the isolation powder, the second conveyor belt close to the upper end of the support plate conveys the support plate to the discharge port through friction. When the support plate is blocked by the baffle, the support plate is located directly above the stacking bracket, and the limit hole on the support plate corresponds to the position of the support rod on the stacking bracket; the discharge plate is opened, and the support plate slides down along the support rod, and preferably 5 to 25 support plates are stacked on each stacking bracket.

[0006] The second conveyor belts correspond to the positions on both sides of the support plate and do not contact the green sheets.

[0007] Furthermore, the discharge plate has a cross-shaped cross section, both ends of the discharge plate are rotatably connected to the machine body, a driving motor is transmission-connected to the discharge plate, and a counter is provided on the discharge plate.

[0008] The unloading plate is cross-shaped, and the support plate is accurately positioned and stable when entering between the two unloading plates; the driving motor on the two unloading plates drives the two unloading plates to rotate 90° relative to each other each time, so that the support plate falls from the two unloading plates, and the counter counts the released support plates.

[0009] Furthermore, the lamination support is arranged on the third conveyor belt, and the third conveyor belt is provided with a gravity sensor at a position below the discharge port, and the gravity sensor is connected to the servo motor signal of the third conveyor belt.

[0010] The gravity sensor is located below the discharge port. When the gravity sensor detects that the weight of the stacking bracket plus the support plate and the green sheet reaches a preset value, the third conveyor belt is started. When the next empty stacking bracket is transported to the gravity sensor, the third conveyor belt stops rotating. A vacuum drying oven for flattening and aging the green sheet is provided at the end of the third conveyor belt.

[0011] Furthermore, a pressing plate is conveyed on the first conveyor belt, and a through hole is provided on the pressing plate corresponding to the position and number of the support rods. A pressing plate will be placed after a certain number of support plates are placed on the first conveyor belt, and the specific number is based on the number of green sheets to be placed on the stacking bracket.

[0012] Furthermore, a feed pipe is connected to the spray head, a feed pump is provided on the feed pipe, and a powder bin is provided at one end of the feed pipe away from the spray head.

[0013] Furthermore, in order to evenly distribute the anti-sticking powder on the surface of the green sheet, an oscillating motor is provided at the lower end of the powder coating plate.

[0014] Furthermore, in order to prevent the support plate from sliding down along the support rod too fast, a plurality of fan-shaped spring pieces are evenly arranged in the circumferential direction in the limiting hole. The fan-shaped spring pieces are closely attached to the support rod, so that the support plate can slide down along the support rod at a uniform and stable speed.

[0015] The beneficial effects of the utility model are as follows: the utility model provides a powder coating and stacking device for an aluminum nitride green body sintering machine, which adopts a spraying head to automatically spray the green sheets conveyed by the first conveyor belt, and then the green sheets are stacked through the cooperation of the second conveyor belt, the discharge plate and the stacking bracket, and finally the stacked green sheets are sent into a vacuum drying box for flattening and aging treatment through the third conveyor belt, with a high degree of automation and high production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is a structural schematic diagram of the best embodiment of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the support plate and the unloading plate;

[0019] Figure 3 It is a structural schematic diagram of the support plate.

[0020] In the figure: 1. first conveyor belt, 2. green sheet, 3. support plate, 3-1. limit hole, 3-2. fan-shaped spring, 4. pressure plate, 5. powder coating plate, 6. oscillation motor, 7. spray head, 8. second conveyor belt, 9. feed pipe, 10. stacking bracket, 10-1, support rod, 11. discharge port, 12. discharge plate, 13. baffle, 14. third conveyor belt, 15. gravity sensor. DETAILED DESCRIPTION

[0021] Now the utility model is described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, which only illustrates the basic structure of the utility model in a schematic manner, so it only shows the components related to the utility model.

[0022] like Figure 1-3 As shown, the utility model is a powder coating and stacking device for an aluminum nitride green body sintering machine, comprising a machine body, wherein a first conveyor belt 1 is provided in the machine body, and the first conveyor belt 1 conveys a plurality of support plates 3 for carrying green sheets 2 and a pressing plate 4 for ensuring the flattening and aging effect of the green sheets 2. If a stacking bracket 10 is provided with N green sheets 2 stacked thereon, a pressing plate 4 is placed every N support plates 3 on the first conveyor belt 1.

[0023] A powder coating plate 5 is provided at the end of the first conveyor belt 1, and an oscillating motor 6 is provided at the lower end of the powder coating plate 5. A spraying head 7 and a second conveyor belt 8 are provided above the powder coating plate 5, and a feed pipe 9 is connected to the spraying head 7, and a pump is provided on the feed pipe 9. A powder bin is provided at one end of the feed pipe 9 away from the spraying head 7.

[0024] The second conveyor belt 8 is arranged on the side of the spray head 7 away from the first conveyor belt 1, and a stacking bracket 10 is arranged at the end of the powder coating plate 5. Two rows of support rods 10-1 are vertically arranged on both sides of the stacking bracket 10. The support plate 3 is provided with limiting holes 3-1 on both sides corresponding to the position and number of the support rods 10-1. The pressure plate 4 is provided with through holes corresponding to the position and number of the support rods 10-1. A plurality of fan-shaped springs 3-2 are evenly arranged in the circumferential direction in the limiting holes 3-1. A discharge port 11 is arranged above the stacking bracket 10, and discharge plates 12 are rotatably arranged on both sides of the discharge port 11. A baffle 13 is arranged at the end of the discharge plate 12 away from the powder coating plate 5.

[0025] The cross section of the discharge plate 12 is cross-shaped, and both ends of the discharge plate 12 are rotatably connected to the machine body. The discharge plate 12 is transmission-connected to a driving motor, and a counter is provided on the discharge plate 12 .

[0026] The stack support 10 is disposed on the third conveyor belt 14 . The third conveyor belt 14 is provided with a gravity sensor 15 at a position below the discharge port 11 . The gravity sensor 15 is connected to the servo motor signal of the third conveyor belt 14 .

[0027] Working process:

[0028] The first conveyor belt 1 conveys the support plate 3 carrying the raw sheet 2 into the machine body. After the support plate 3 reaches the powder coating plate 5, the infrared sensor detects the support plate 3, and then the spray head 7 applies a layer of isolation powder to the raw sheet 2 arranged on the support plate 3; after applying the isolation powder, the second conveyor belt 8 close to the upper end of the support plate 3 conveys the support plate 3 to the discharge port 11 through friction. When the support plate 3 is blocked by the baffle 13, the support plate 3 is located directly above the stacking bracket 10, and the limiting hole 3-1 on the support plate 3 corresponds to the position of the support rod 10-1 on the stacking bracket 10; the two driving motors drive the two cross-shaped discharge plates 12 to rotate 90° relative to each other to release the support plate 3, and the support plate 3 slides down along the support rod 10-1. After 10 support plates 3 are stacked on each stacking bracket 10, the first conveyor belt 1 conveys a pressing plate 4 to press on the top of the stacking bracket 10.

[0029] When the gravity sensor 15 detects that the total weight on the stacking rack 10 (the weight of the stacking rack 10, the support plate 3, the green sheet 2 and the pressing plate 4) reaches a preset value, the third conveyor belt 14 is started, and when the next empty stacking rack 10 is conveyed to the gravity sensor 15, the third conveyor belt 14 stops rotating; the third conveyor belt 14 finally conveys the stacking rack 10 toward the vacuum drying oven.

[0030] Directions and references (e.g., up, down, left, right, etc.) in the present invention may only be used to assist in the description of features in the accompanying drawings. Therefore, the following detailed description is not to be taken in a limiting sense, and the scope of the subject matter claimed is limited only by the attached claims and their equivalents.

[0031] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without departing from the scope of the utility model through the above description. The technical scope of this utility model is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A powder coating and lamination device for an aluminum nitride green body sintering machine, characterized in that: The invention comprises a machine body, wherein a first conveyor belt (1) is provided in the machine body, a plurality of support plates (3) for carrying green sheets (2) are conveyed on the first conveyor belt (1), a powder coating plate (5) is provided at the end of the first conveyor belt (1), a spraying head (7) and a second conveyor belt (8) are provided above the powder coating plate (5), the second conveyor belt (8) is provided on the side of the spraying head (7) away from the first conveyor belt (1), a stacking bracket (10) is provided at the end of the powder coating plate (5), two rows of support rods (10-1) are vertically provided on both sides of the stacking bracket (10), limiting holes (3-1) corresponding to the positions and numbers of the support rods (10-1) are provided on both sides of the support plate (3), a discharge port (11) is provided above the stacking bracket (10), discharge plates (12) are rotatably provided on both sides of the discharge port (11), and a baffle (13) is provided at the end of the discharge plate (12) away from the powder coating plate (5).

2. A powder coating and lamination device for an aluminum nitride green body sintering machine as claimed in claim 1, characterized in that: The discharge plate (12) has a cross-shaped cross section, two ends of the discharge plate (12) are rotatably connected to the machine body, a drive motor is transmission-connected to the discharge plate (12), and a counter is provided on the discharge plate (12).

3. A powder coating and lamination device for an aluminum nitride green body sintering machine as claimed in claim 1, characterized in that: The lamination support (10) is arranged on the third conveyor belt (14); the third conveyor belt (14) is provided with a gravity sensor (15) at a position below the discharge port (11); the gravity sensor (15) is connected to the servo motor signal of the third conveyor belt (14).

4. A powder coating and lamination device for an aluminum nitride green body sintering machine as claimed in claim 3, characterized in that: A pressing plate (4) is conveyed on the first conveyor belt (1), and the pressing plate (4) is provided with through holes corresponding in position and number to the support rods (10-1).

5. The powder coating and lamination device for an aluminum nitride green body sintering machine according to claim 1, characterized in that: The spray head (7) is connected to a feed pipe (9), a feed pump is provided on the feed pipe (9), and a powder bin is provided at one end of the feed pipe (9) away from the spray head (7).

6. The powder coating and lamination device for an aluminum nitride green body sintering machine according to claim 1, characterized in that: An oscillating motor (6) is provided at the lower end of the powder applying plate (5).

7. The powder coating and lamination device for an aluminum nitride green body sintering machine according to claim 1, characterized in that: A plurality of fan-shaped spring pieces (3-2) are evenly arranged in the circumferential direction in the limiting hole (3-1).

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