Chip nano-silver paste coating device

Abstract

The utility model relates to the technical field of coating devices, and discloses a chip nano silver paste coating device which comprises a coating frame, a plurality of coating rollers are arranged at the lower end of the coating frame, a storage barrel is fixedly mounted at the upper end of the coating frame, an intermittent barrel is arranged at the lower end of the storage barrel, and the lower end of the intermittent barrel is communicated with a plurality of discharging pipelines. According to the technical scheme, the servo motor can drive the scraping rod to rotate, the scraping rod can scrape and clean the inner wall of the storage barrel, the situation that nano-silver paste is attached to the inner wall of the storage barrel and is dry and hard is reduced, the fixing rod can drive the sealing plate to rotate, and therefore the sealing effect is improved. According to the device, the intermittent cylinder is arranged in the inner cavity of the intermittent cylinder, so that nano-silver paste temporarily stored above the inner cavity of the intermittent cylinder is rotated to the position below the intermittent cylinder and then discharged to the upper end of the coating roller through the discharging channel, then nano-silver paste feeding is conducted on the coating roller, the situation of spraying waste of a spray head is avoided, the situation of excessive supply of the nano-silver paste is avoided, and then nano-silver paste coating is conveniently conducted on a chip.

Description

TECHNICAL FIELD

[0001] The utility model relates to coating device technical field, concretely is a chip nanometer silver paste coating device. BACKGROUND

[0002] Nanotechnology shows great results in promoting modern science and technology. In the field of semiconductor manufacturing, nanotechnology enables Moore's law to continue. Material science experiments prove that when material particles reach nanoscale, the material has high surface activity and surface performance. This makes the melting point or sintering temperature of nanometer particles much lower than that of bulk materials, but the material formed after sintering has similar melting point and performance as bulk materials, which makes it have a wide application prospect in the field of microsystem integration. Metal silver is particularly suitable as an assembly material for high-power products, making nanosilver the most popular packaging material among many nanomaterials. Nanosilver is usually attached to the chip by coating.

[0003] After searching, the disclosure number (CN109950178B) discloses a kind of chip nanometer silver paste coating device, including bottom plate, auxiliary part, first motor, second motor, limiting piece;First support column, second support column, third support column, fourth support column are provided on bottom plate, first support column, second support column, third support column, fourth support column are distributed clockwise around bottom plate center axis, first support column, third support column are diagonally distributed, second support column, fourth support column are diagonally distributed;Bottom plate is equipped with a pair of tracks, track is located first support column, second support column outside, track extends along X direction;Auxiliary part is provided above track.

[0004] In the implementation of the technical scheme, at least the following defects still exist: although the invention can coat silver paste, it is too cumbersome to spray silver paste with a spray head and then coat it, and it is easy to cause waste of nanosilver paste, and it is not convenient to perform intermittent feeding coating, and improvement is needed. Therefore, we propose a kind of chip nanometer silver paste coating device. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of chip nanometer silver paste coating device, solve the problem raised in background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: A chip nanometer silver paste coating device, including the coating frame, a plurality of coating cylinders are arranged on the lower end of the coating frame, the upper end of the coating frame is fixedly installed with the storage cylinder, the lower end of the storage cylinder is provided with the intermittent cylinder, a plurality of blanking pipe channels are communicated with the lower end of the intermittent cylinder, the upper end of one side of the coating frame is fixedly installed with the servo motor, the output end of the servo motor is installed with the scraping rod, one end of the scraping rod is fixedly installed with the first belt pulley, one side of the intermittent cylinder is provided with the fixed rod, the other end of the fixed rod is fixedly installed with the closing plate.

[0007] By adopting the above technical scheme, the servo motor can drive the scraping rod to rotate, the scraping rod can scrape and clean the inner wall of the storage cylinder, thereby reducing the situation that the nanometer silver paste is dried and solidified on the inner wall of the storage cylinder, and the fixed rod can drive the closing plate to rotate during the rotation of the scraping rod, so that the nanometer silver paste temporarily stored in the upper cavity of the intermittent cylinder is rotated to the lower part of the intermittent cylinder, and then discharged to the upper end of the coating cylinder through the blanking channel, thereby supplying the nanometer silver paste to the coating cylinder, avoiding the waste of the spray head, and the continuously rotating closing plate can intermittently supply the blanking pipe channel, thereby avoiding the situation that too much nanometer silver paste is supplied, and thereby facilitating the nanometer silver paste coating of the chip.

[0008] Optionally, one end of the fixed rod is fixedly installed with a second belt pulley, and the first belt pulley and the second belt pulley are connected through a transmission belt.

[0009] By adopting the above technical scheme, the first belt pulley and the second belt pulley are matched, so that the fixed rod can be driven to rotate.

[0010] Optionally, the coating cylinders are equidistantly distributed, and the blanking pipe channels correspond to the coating cylinders.

[0011] By adopting the above technical scheme, the nanometer silver paste can be supplied to the coating cylinder through the blanking channel.

[0012] Optionally, the scraping rod is arranged inside the storage cylinder, and the scraping rod is adapted to be attached to the inner wall of the storage cylinder.

[0013] By adopting the above technical scheme, the inner wall of the storage cylinder can be scraped and cleaned through the scraping rod.

[0014] Optionally, the lower end of the storage cylinder is communicated with a solenoid valve, and the other end of the solenoid valve is communicated with the upper end of the intermittent cylinder.

[0015] By adopting the above technical scheme, the intermittent cylinder can be supplied through the solenoid valve.

[0016] Optionally, the length of the closing plate is the same as the length of the inner cavity of the intermittent cylinder, and the edge of the closing plate is in close contact with the inner wall of the intermittent cylinder.

[0017] By adopting the technical scheme, the intermittent feeding of the nano silver paste can be realized through the closing plate.

[0018] Compared with the prior art, the technical scheme has the following beneficial effects:

[0019] The technical scheme can drive the scraping rod to rotate through the servo motor, and the scraping rod can scrape and clean the inner wall of the storage cylinder, thereby reducing the situation that the nano silver paste is dried and solidified on the inner wall of the storage cylinder. The fixed rod can drive the closing plate to rotate during the rotation of the scraping rod, so that the nano silver paste temporarily stored above the inner cavity of the intermittent cylinder is rotated to the lower part of the intermittent cylinder, and then discharged to the upper end of the coating roller through the discharge channel. The coating roller is fed with the nano silver paste, which avoids the waste of the spray head. The continuously rotating closing plate can intermittently feed the discharge pipeline, thereby avoiding the overfeeding of the nano silver paste, and facilitating the coating of the chip with the nano silver paste. BRIEF DESCRIPTION OF DRAWINGS

[0020] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments, read in conjunction with the accompanying drawings:

[0021] Fig. 1 Figure 1 is a schematic view of the overall structure of a chip nano silver paste coating device according to the present application;

[0022] Fig. 2 Figure 2 is a schematic view of the cross-sectional structure of an intermittent cylinder of a chip nano silver paste coating device according to the present application.

[0023] In the figure: 1, coating frame; 11, coating roller; 12, storage cylinder; 13, intermittent cylinder; 14, discharge pipeline; 2, servo motor; 21, scraping rod; 22, first pulley; 23, transmission belt; 24, electromagnetic valve; 3, fixed rod; 4, second pulley; 5, closing plate. DETAILED DESCRIPTION

[0024] Please refer to Figs. 1-2The utility model provides a kind of technical scheme: a kind of chip nanometer silver paste coating device, including coating frame 1, the lower end of coating frame 1 is provided with multiple coating cylinders 11, the upper end of coating frame 1 is fixedly installed with storage cylinder 12, the lower end of storage cylinder 12 is provided with intermittent cylinder 13, intermittent cylinder 13 is communicated with multiple blanking ducts 14, the upper end of one side of coating frame 1 is fixedly installed with servo motor 2, the output of servo motor 2 is installed with scraping rod 21, one end of scraping rod 21 is fixedly installed with first belt pulley 22, one side of intermittent cylinder 13 is provided with fixed rod 3, the other end of fixed rod 3 is fixedly installed with closure plate 5, scraping rod 21 is arranged inside storage cylinder 12, and scraping rod 21 is conveniently attached with the inner wall of storage cylinder 12, by the setting of scraping rod 21, the inner wall of storage cylinder 12 can be scraped and cleaned, the lower end of storage cylinder 12 is communicated with electromagnetic valve 24, the other end of electromagnetic valve 24 is communicated with the upper end of intermittent cylinder 13, by the setting of electromagnetic valve 24, intermittent cylinder 13 can be fed, the length of closure plate 5 is same with the length of the inner cavity of intermittent cylinder 13, and the edge of closure plate 5 is attached with the inner wall of intermittent cylinder 13, by the setting of closure plate 5, intermittent feeding of nanometer silver paste can be carried out.

[0025] One end of fixed rod 3 is fixedly installed with second belt pulley 4, first belt pulley 22 is connected with second belt pulley 4 by transmission belt 23, by the cooperation of first belt pulley 22 and second belt pulley 4, fixed rod 3 can be driven to rotate.

[0026] Coating cylinder 11 is equidistantly distributed, and blanking duct 14 corresponds to coating cylinder 11, by the setting of blanking passage, nanometer silver paste can be fed to coating cylinder 11.

[0027] During coating, electromagnetic valve 24 is opened first, electromagnetic valve 24 discharges nanometer silver paste in storage cylinder 12 into intermittent cylinder 13, then servo motor 2 is opened, servo motor 2 drives scraping rod 21 to rotate, scraping rod 21 can scrape and clean the inner wall of storage cylinder 12, thereby reducing the situation that nanometer silver paste is attached and dried on the inner wall of storage cylinder 12, while in the rotating process of scraping rod 21, first belt pulley 22 on scraping rod 21 drives second belt pulley 4 to rotate by cooperating with transmission belt 23, second belt pulley 4 drives fixed rod 3 to rotate, so that fixed rod 3 drives closure plate 5 to rotate, thereby rotating nanometer silver paste temporarily stored above the inner cavity of intermittent cylinder 13 to the lower part of intermittent cylinder 13, and then discharging the nanometer silver paste to the upper end of coating cylinder 11 through blanking passage, thereby feeding nanometer silver paste to coating cylinder 11, avoiding the waste situation of nozzle spraying, and continuously rotating closure plate 5 can intermittently feed blanking duct 14, thereby avoiding the situation that nanometer silver paste is supplied too much, and thereby facilitating nanometer silver paste coating of chip.

Claims

1. A chip nano-silver paste coating device comprising a coating rack (1), characterized in that: The lower end of the coating frame (1) is provided with a plurality of coating rollers (11), the upper end of the coating frame (1) is fixedly installed with a storage cylinder (12), the lower end of the storage cylinder (12) is provided with an intermittent cylinder (13), the lower end of the intermittent cylinder (13) is communicated with a plurality of discharge pipes (14), the upper end of one side of the coating frame (1) is fixedly installed with a servo motor (2), the output end of the servo motor (2) is installed with a scraping rod (21), one end of the scraping rod (21) is fixedly installed with a first belt pulley (22), one side of the intermittent cylinder (13) is provided with a fixed rod (3), the other end of the fixed rod (3) is fixedly installed with a closing plate (5).

2. The chip nano-silver paste coating device according to claim 1, characterized in that: One end of the fixed rod (3) is fixedly installed with a second belt pulley (4), the first belt pulley (22) and the second belt pulley (4) are drivingly connected through a transmission belt (23).

3. The chip nano-silver paste coating device according to claim 1, characterized in that: The coating rollers (11) are equidistantly distributed, and the discharge pipes (14) correspond to the coating rollers (11).

4. The chip nano-silver paste coating device according to claim 1, characterized in that: The scraping rod (21) is arranged in the inside of the storage cylinder (12), and the scraping rod (21) is convenient to be attached to the inner wall of the storage cylinder (12).

5. The chip nano-silver paste coating device according to claim 1, characterized in that: The lower end of the storage cylinder (12) is communicated with a solenoid valve (24), the other end of the solenoid valve (24) is communicated with the upper end of the intermittent cylinder (13).

6. The chip nano-silver paste coating device according to claim 1, characterized in that: The length of the closing plate (5) is same as the length of the inner cavity of the intermittent cylinder (13), and the edge of the closing plate (5) is attached to the inner wall of the intermittent cylinder (13). The length of the closing plate (5) is same as the length of the inner cavity of the intermittent cylinder (13), and the edge of the closing plate (5) is attached to the inner wall of the intermittent cylinder (13).

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