Molding machine base plate feeding cleaning air knife

Abstract

The utility model relates to the technical field of chip production, in particular to a die sealing machine base plate feeding cleaning air knife which comprises a first carrier plate, one side of the first carrier plate is fixedly connected with a second carrier plate, one side of the second carrier plate is fixedly connected with a third carrier plate, a frame is fixed on the surface of the third carrier plate, and an air knife head is rotatably installed on the inner wall of the frame. The surface of the first carrier plate is fixedly connected with an ion generator, one end of the ion generator is connected with a factory service air source pipe, the other end of the ion generator fixedly communicates with a guide pipe, and the outer end of the guide pipe fixedly communicates with the air knife head. According to the utility model, the inclined air knife head is connected into a factory service air source, so that the formed air knife purges foreign matters on the surface of the substrate, and high-pressure air instantly blows away the foreign matters on the surface of the substrate, thereby improving the cleaning effect on the foreign matters on the surface of the substrate, effectively ensuring the thoroughness of foreign matter removal, and improving the working efficiency. And the condition that pits exist on the surface of the substrate after mold sealing due to residual foreign matters on the surface of the substrate is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of chip production, in particular to a substrate feeding and cleaning air knife for a mold sealing machine. Background Art

[0002] The substrate is the carrier of semiconductor chip packaging, which can provide electrical connection, protection, support, heat dissipation, assembly and other functions for the chip, so as to achieve multi-pin, reduce the size of packaged products, improve electrical performance and heat dissipation, ultra-high density or multi-chip modularization;

[0003] There will be a lot of foreign matter on the surface of the chip substrate before it enters the molding machine. If the foreign matter is not removed, it is easy to cause pits on the surface of the product substrate after molding;

[0004] Existing substrates will pass through a vacuum cleaner before molding, and foreign matter on the substrate will be sucked out by the vacuum cleaner. After the product with foreign matter passes through the vacuum cleaner, some foreign matter still cannot be cleaned, resulting in pits on the surface of the substrate after molding. Therefore, we propose a substrate feeding cleaning air knife for a molding machine. Utility Model Content

[0005] The utility model aims to provide a substrate feeding and cleaning air knife for a mold sealing machine, which solves the problems raised in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a substrate feeding and cleaning wind knife for a mold sealing machine, comprising a first carrier plate, a second carrier plate is fixedly connected to one side of the first carrier plate, a third carrier plate is fixedly connected to one side of the second carrier plate, a frame is fixedly provided on the surface of the third carrier plate, a wind knife head is rotatably mounted on the inner wall of the frame, an ion generator is fixedly provided on the surface of the first carrier plate, one end of the ion generator is connected to a factory air source pipe, the other end of the ion generator is fixedly connected to a conduit, and the outer end of the conduit is fixedly connected to the wind knife head.

[0007] By adopting the above technical solution, the device is first installed at a specified position, and then the wind knife head is rotated so that the wind knife head is tilted to point to the surface of the moving substrate, and then the gas source is introduced into the ion generator through the factory gas source pipe. The gas then passes through the ion generator and enters the wind knife head, thereby outputting a wind knife with ions from the outlet of the wind knife head. The wind knife can be used to comprehensively blow and clean the surface of the substrate, thereby avoiding foreign matter remaining on the surface of the substrate before entering the molding machine, thereby avoiding foreign matter remaining on the surface of the substrate causing pits on the surface of the substrate after molding. At the same time, the wind knife is added with ion wind, thereby avoiding the risk of electrostatic discharge during the movement of the product on the track causing ESD abnormality of the product.

[0008] As a preferred embodiment of the utility model, an arc-shaped sliding hole is opened on one side wall of the frame, a bolt column passes through the inner cavity of the arc-shaped sliding hole, a threaded hole adapted to the bolt column is opened on the end surface of the wind knife head corresponding to the bolt column, the bolt column and the threaded hole are threadedly engaged, and the outer end of the bolt column is fixedly connected with a tightening block.

[0009] By adopting the above technical solution, after rotating the wind blade head to adjust the angle, the bolt column can be driven to rotate by rotating the clamping block, so that the bolt column can penetrate into the threaded hole, and then the clamping block can be clamped against the side wall of the frame, thereby achieving locking and positioning of the wind blade head, thereby ensuring stability during use.

[0010] As a preferred embodiment of the utility model, an angle scale line is provided on a side wall surface of the arc-shaped sliding hole corresponding to the frame, and a benchmark is fixed to an end surface of the wind knife head corresponding to the angle scale line.

[0011] By adopting the above technical solution, when the wind knife head is rotated to adjust the alignment position of the wind knife head air outlet, the corresponding angle scale line after the reference rod is rotated can be used to ensure accurate adjustment, and when adjusting the inclination of the wind knife head, the optimal angle is that the wind direction of the wind knife and the substrate form 45°.

[0012] As a preferred embodiment of the utility model, one end of the ion generator corresponding to the factory gas source pipe is fixedly connected to a pressure regulating valve, and the outer end of the pressure regulating valve is fixedly connected to the factory gas source pipe.

[0013] By adopting the above technical solution and setting the pressure regulating valve, it is possible to adjust the gas source pressure introduced into the factory gas source pipe, and the optimal pressure value range is: 0.5-0.7MPa.

[0014] As a preferred embodiment of the present invention, a first strip hole and a second strip hole are respectively formed on the surfaces of the first carrier plate and the second carrier plate.

[0015] By adopting the above technical solution, the setting of the first strip hole makes it possible to fix the ion generator by means of bolts passing through the first strip hole, and the installation height of the ion generator can be adjusted when the bolts are loosened so that the installation is in the optimal position. The setting of the second strip hole makes it possible to fix the entire device at a designated installation position by means of installation bolts passing through the second strip hole, and the installation bolts can be loosened so that the installation bolts can slide relatively in the second strip hole to adjust the installation height of the entire device, thereby ensuring that the wind knife is at the optimal use height.

[0016] As a preferred embodiment of the present invention, the first carrier plate, the second carrier plate and the third carrier plate are integrally bent and formed.

[0017] By adopting the above technical solution, the first carrier plate, the second carrier plate and the third carrier plate have high overall strength.

[0018] As a preferred embodiment of the present invention, the side wall of the pressing block corresponding to the frame is provided with anti-slip grooves. The anti-slip grooves can increase friction when the rotating pressing block is pressed against the side wall of the frame for positioning, thereby improving the stability of the pressing.

[0019] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0020] The substrate feeding and cleaning air knife of a mold sealing machine of the technical solution of the present application utilizes an inclined air knife head to connect to a factory gas source, so that the formed air knife can sweep away foreign matter on the surface of the substrate. Since the air knife has a certain width, it can achieve a comprehensive sweep of the substrate surface. The high-pressure gas can instantly blow away foreign matter on the substrate surface, thereby improving the cleaning effect of foreign matter on the substrate surface, effectively ensuring the thoroughness of foreign matter removal, and avoiding the situation where pits on the substrate surface will appear after mold sealing due to residual foreign matter on the substrate surface;

[0021] The factory air source passes through the ion generator and then is introduced into the wind knife head to form a wind knife, so that the wind knife used to blow and clean the substrate can be added with ion wind, thereby avoiding the risk of electrostatic discharge during the movement of the product on the track, causing ESD abnormalities in the product, and playing a good role in protecting the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0023] Figure 1 This is a schematic diagram of the overall structure of the substrate feeding and cleaning air knife of the mold sealing machine of the utility model;

[0024] Figure 2 This is an enlarged structural schematic diagram of the air knife head of the substrate feeding and cleaning air knife of the mold sealing machine of the utility model;

[0025] Figure 3 It is a partial enlarged structural schematic diagram of the substrate feeding and cleaning air knife of the mold sealing machine of the utility model;

[0026] Figure 4 This is a schematic diagram of the connection structure of the bolt column and the tightening block of the substrate feeding and cleaning air knife of the mold sealing machine of the utility model;

[0027] Figure 5 The utility model is a schematic diagram of the side view structure of the clamping block and the bolt column of the substrate feeding and cleaning air knife of the mold sealing machine.

[0028] In the figure:

[0029] 1. a first carrier plate; 11. a first strip hole;

[0030] 2. a second carrier plate; 21. a second strip hole;

[0031] 3. Ion generator; 31. Pressure regulating valve; 32. Factory gas source pipe; 33. Conduit;

[0032] 4. The third carrier plate; 41. The frame; 42. The wind knife head; 43. The arc-shaped sliding hole; 44. The tightening block; 45. The bolt column; 46. The angle scale line; 47. The benchmark. DETAILED DESCRIPTION

[0033] See also Figure 1-5 The utility model provides a technical solution: a substrate feeding and cleaning air knife for a mold sealing machine, comprising a first carrier plate 1, a second carrier plate 2 is fixedly connected to one side of the first carrier plate 1, a third carrier plate 4 is fixedly connected to one side of the second carrier plate 2, a frame 41 is fixedly provided on the surface of the third carrier plate 4, an air knife head 42 is rotatably mounted on the inner wall of the frame 41, an ion generator 3 is fixedly provided on the surface of the first carrier plate 1, one end of the ion generator 3 is connected to a factory gas source pipe 32, the other end of the ion generator 3 is fixedly connected to a conduit 33, and the outer end of the conduit 33 is fixedly connected to the air knife head 42;

[0034] In actual use, the device is first installed at a designated position, and then the wind knife head 42 is rotated so that the wind knife head 42 is tilted to point toward the surface of the moving substrate, and then the gas source is introduced into the ion generator 3 through the factory gas source pipe 32, and then the gas enters the wind knife head 42 after passing through the ion generator 3, so that the wind knife with ions is led out from the outlet of the wind knife head 42, and the surface of the substrate can be fully purged and cleaned by the wind knife, so as to avoid foreign matter remaining on the surface of the substrate before entering the molding machine, and further avoid the situation that foreign matter remaining on the surface of the substrate causes pits on the surface of the substrate after molding, and at the same time, the wind knife is added with ion wind, so as to avoid the risk of electrostatic discharge of the product during the track movement, resulting in ESD abnormality of the product;

[0035] Among them, the positive and negative ion dissipation time is within 5S, and the equilibrium voltage range is less than plus or minus 35V;

[0036] Furthermore, one end of the ion generator 3 corresponding to the factory gas source pipe 32 is fixedly connected with a pressure regulating valve 31, and the outer end of the pressure regulating valve 31 is fixedly connected to the factory gas source pipe 32. The setting of the pressure regulating valve 31 enables the pressure of the gas source introduced into the factory gas source pipe 32 to be adjusted, and the optimal range of the pressure value is: 0.5-0.7MPa;

[0037] Furthermore, the first carrier plate 1, the second carrier plate 2 and the third carrier plate 4 are integrally bent and formed, so that the first carrier plate 1, the second carrier plate 2 and the third carrier plate 4 have high overall strength;

[0038] It is worth mentioning that the surfaces of the first carrier plate 1 and the second carrier plate 2 are respectively provided with a first strip hole 11 and a second strip hole 21. The first strip hole 11 is provided so that the ion generator 3 can be fixed by passing a bolt through the first strip hole 11, and the installation height of the ion generator 3 can be adjusted when the bolt is loosened so that the installation is in the best position. The second strip hole 21 is provided so that the device as a whole can be fixedly installed in a specified installation position by passing a mounting bolt through the second strip hole 21, and the mounting bolt can be loosened so that the mounting bolt slides relatively in the second strip hole 21 to adjust the installation height of the device as a whole, thereby ensuring that the wind knife is at the best use height.

[0039] like Figure 1 and 2 , 3, and 4; an arc-shaped sliding hole 43 is provided on one side wall of the frame 41, and a bolt column 45 passes through the inner cavity of the arc-shaped sliding hole 43, and a threaded hole adapted to the bolt column 45 is provided on the end surface of the wind blade head 42 corresponding to the bolt column 45, and the bolt column 45 is threadedly engaged with the threaded hole, and a tightening block 44 is fixedly connected to the outer end of the bolt column 45. After the wind blade head 42 is rotated to adjust the angle, the bolt column 45 can be driven to rotate by rotating the tightening block 44, so that the bolt column 45 penetrates into the threaded hole, and then the tightening block 44 can be pressed against the side wall of the frame 41, so as to realize the locking and positioning of the wind blade head 42, thereby ensuring the stability during use;

[0040] Furthermore, an angle scale line 46 is provided on one side wall surface of the arc-shaped sliding hole 43 corresponding to the frame 41, and a reference rod 47 is fixed to one end surface of the wind knife head 42 corresponding to the angle scale line 46, so that when the wind knife head 42 is rotated to adjust the alignment position of the wind knife head 42 air outlet, the reference rod 47 can be used to refer to the angle scale line 46 corresponding to the rotation of the reference rod 47, so as to ensure accurate adjustment, and when adjusting the inclination of the wind knife head 42, the best angle is that the wind direction of the wind knife and the substrate form 45 degrees;

[0041] Furthermore, a side wall of the frame 41 corresponding to the pressing block 44 is provided with anti-skid grooves, and the anti-skid grooves can increase friction when the pressing block 44 is rotated to press against the side wall of the frame 41 for positioning, thereby improving the stability of the pressing.

[0042] The implementation principle of a substrate feeding and cleaning wind knife for a mold sealing machine of the present application is as follows: in actual use, the device is first installed at a specified position, and then the wind knife head 42 is rotated so that the wind knife head 42 is tilted to point to the surface of the moving substrate. When the wind knife head 42 is rotated to adjust the alignment position of the air outlet of the wind knife head 42, the reference bar 47 can be used to refer to the angle scale line 46 corresponding to the rotation of the reference bar 47. After adjusting the angle of the wind knife head 42, the wind direction of the wind knife and the substrate form a 45° angle. After the wind knife head 42 is rotated to adjust the angle, the bolt column 45 can be driven to rotate by rotating the tightening block 44, so that the bolt column 45 penetrates into the threaded hole, and then the tightening block 44 can be tightened against the side wall of the frame 41, thereby achieving the wind knife head 42 is locked in position to ensure stability during use, and then the gas source is introduced into the ion generator 3 through the factory gas source pipe 32, and then the gas passes through the ion generator 3 and enters the wind knife head 42, so that the wind knife with ions is output from the outlet of the wind knife head 42. The wind knife can be used to comprehensively blow and clean the surface of the substrate, so as to avoid foreign matter remaining on the surface of the substrate before entering the molding machine, and further avoid the situation where foreign matter remaining on the surface of the substrate causes pits on the surface of the substrate after molding. At the same time, the wind knife is added with ion wind, the positive and negative ion dissipation time is within 5S, and the balance voltage range is less than plus or minus 35V, so as to avoid the risk of electrostatic discharge of the product during the movement of the track and causing ESD abnormality of the product.

[0043] In addition, the components included in the substrate feeding and cleaning air knife of a mold sealing machine according to the utility model are all universal standard parts or components known to technical personnel in this field, and their structures and principles can be known to technical personnel in this field through technical manuals or through conventional experimental methods. In the idle part of this device, all the above-mentioned electrical components, which refer to power elements, electrical components, and compatible monitoring computers and power supplies, are connected through wires. The specific connection means should refer to the following working principle. The electrical connection is completed in the working order of each electrical component. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principles and processes, and no longer explains the electrical control.

Claims

1. A substrate feeding and cleaning air knife for a mold sealing machine, comprising a first carrier plate (1), characterized in that: One side of the first carrier plate (1) is fixedly connected to the second carrier plate (2), one side of the second carrier plate (2) is fixedly connected to the third carrier plate (4), a frame (41) is fixedly provided on the surface of the third carrier plate (4), an air knife head (42) is rotatably mounted on the inner wall of the frame (41), an ion generator (3) is fixedly provided on the surface of the first carrier plate (1), one end of the ion generator (3) is connected to a factory gas source pipe (32), the other end of the ion generator (3) is fixedly connected to a conduit (33), and the outer end of the conduit (33) is fixedly connected to the air knife head (42).

2. The substrate feeding and cleaning air knife for a mold sealing machine according to claim 1, characterized in that: A side wall of the frame (41) is provided with an arc-shaped sliding hole (43), a bolt column (45) passes through the inner cavity of the arc-shaped sliding hole (43), a threaded hole adapted to the bolt column (45) is provided on the end surface of the wind knife head (42) corresponding to the bolt column (45), the bolt column (45) and the threaded hole are threadedly engaged, and the outer end of the bolt column (45) is fixedly connected with a tightening block (44).

3. The substrate feeding and cleaning air knife for a mold sealing machine according to claim 2, characterized in that: An angle scale line (46) is provided on a side wall surface of the arc-shaped sliding hole (43) corresponding to the frame (41), and a reference rod (47) is fixed to an end surface of the wind blade head (42) corresponding to the angle scale line (46).

4. The substrate feeding and cleaning air knife for a mold sealing machine according to claim 1, characterized in that: One end of the ion generator (3) corresponding to the factory gas source pipe (32) is fixedly connected to a pressure regulating valve (31), and the outer end of the pressure regulating valve (31) is fixedly connected to the factory gas source pipe (32).

5. The substrate feeding and cleaning air knife for a mold sealing machine according to claim 1, characterized in that: The surfaces of the first carrier plate (1) and the second carrier plate (2) are respectively provided with a first strip hole (11) and a second strip hole (21).

6. The substrate feeding and cleaning air knife for a mold sealing machine according to claim 1, characterized in that: The first carrier plate (1), the second carrier plate (2) and the third carrier plate (4) are integrally bent and formed.

7. The substrate feeding and cleaning air knife for a mold sealing machine according to claim 2, characterized in that: A side wall of the abutting block (44) corresponding to the frame (41) is provided with anti-slip grooves.

Images