CN118699515A - A welding device for processing solid state hard disk - Google Patents

Abstract

The present invention is applicable to the technical field of solid-state hard disk circuit board welding, and in particular, relates to a welding device for solid-state hard disk processing, including a processing table, and the surface of the processing table is connected to a circuit board placement plate, the surface of the circuit board placement plate is provided with a plurality of circuit board placement grooves, the side of the processing table is slidably connected to a second sliding panel, and the surface of the second sliding panel is provided with a precision drive component. The present invention adopts a scraper system with an elastic airbag and a micro high-definition camera, which has significant advantages over the method of directly using computer vision technology to identify hollow depressions and their volumes in the prior art. The system utilizes the physical contact and deformation of the airbag to detect and analyze the hollow area in the solder paste coating process in real time and accurately, and records the deformation of the airbag through a micro high-definition camera to accurately calculate the position and volume of the hollow area.

Description

A welding device for processing solid state hard disk

Technical Field

The invention relates to the technical field of solid state hard disk circuit board welding, in particular to a welding device for solid state hard disk processing.

Background Art

As a new generation of data storage devices, solid-state drives (SSDs) are gradually replacing traditional mechanical hard drives with their advantages of high speed, high stability and low power consumption, and are widely used in various electronic devices. In the manufacturing process of solid-state drives, welding is one of the key steps, which directly affects the reliability and performance of the product. In the welding process, solder paste coating is particularly important. The quality of solder paste coating determines the firmness of the connection between components and circuit boards, which affects the electrical performance and service life of the entire hard drive. Solder paste coating is usually completed by a scraper system to evenly distribute the solder paste on the pads of the circuit board to prepare for subsequent reflow soldering. However, in the process of solder paste coating, especially when facing large-area openings, uneven coating is prone to occur, resulting in welding defects.

In the prior art, computer vision technology is usually used to identify hollow depressions and their volumes after solder paste coating. This method uses a camera to capture the solder paste surface and uses an image processing algorithm to analyze the uniformity of the solder paste. However, computer vision technology is prone to errors under complex lighting conditions, such as light reflection, shadow occlusion, etc., resulting in inaccurate detection results. In addition, due to the reflective properties of the surface after solder paste coating, traditional machine vision systems are difficult to accurately identify all hollow depression areas, especially smaller or hidden defect areas. These factors limit the application effect of the prior art in solder paste coating detection and cannot fully meet the production requirements of high precision and high efficiency.

Summary of the invention

The purpose of the embodiment of the present invention is to provide a welding device for processing a solid state hard disk, aiming to solve the technical problems mentioned in the background technology.

To achieve the above object, the present invention provides the following technical solutions:

A welding device for processing a solid-state hard disk comprises a processing table, wherein a circuit board placement plate is connected to the surface of the processing table, a plurality of circuit board placement grooves are provided on the surface of the circuit board placement plate, a second sliding panel is slidably connected to the side of the processing table, a precision driving component is arranged on the surface of the second sliding panel, a solder paste scraper is connected to the outer side of the precision driving component, a mounting panel is connected to the side of the solder paste scraper, a flexible air bag is installed on the surface of the mounting panel, a plurality of miniature cameras are installed inside the flexible air bag, an air pump is installed on the side of the mounting panel, and an air injection pipe is connected to the outer side of the air pump;

The side of the processing table is slidably connected to a first sliding panel, and a multi-directional linkage platform is installed on the surface of the first sliding panel, the surface of the multi-directional linkage platform is connected to a solder paste storage barrel, and a paste pump is installed on the side of the solder paste storage barrel, and the two sides of the surface of the paste pump are respectively connected to a paste extraction tube and a paste injection tube;

A first precision electric cylinder and a second precision electric cylinder are installed on the side of the processing table, and one end of the first precision electric cylinder is connected to a first connecting block, and one end of the second precision electric cylinder is connected to a second connecting block.

Furthermore, the inner bottom of the flexible airbag is provided with a plurality of marking points made of reflective material, and the diameter of the marking points is 0.5-1 mm.

Furthermore, the reflective material may be a micro-prismatic reflective film or a glass bead reflective coating.

Furthermore, the precision drive assembly comprises:

A bearing seat and a servo motor are respectively installed on both sides of the surface of the second sliding panel, and a ball screw is installed inside the bearing seat and at the output end of the servo motor, and a ball nut is meshed and connected on the surface of the ball screw;

A guide square hole is opened on the surface of the second sliding panel, and the ball nut is slidably connected inside the guide square hole, and the surface of the ball nut is connected to the surface of the solder paste scraper.

Furthermore, the bottom of the flexible airbag is made of silicone material, and the bottom surface of the flexible airbag is provided with a polytetrafluoroethylene coating, and the surrounding of the flexible airbag is made of chloroprene rubber or polyurethane material.

Further, a first guide slot and a second guide slot are provided on the side of the processing table, and a first guide slider and a second guide slider are installed on the sides of the first sliding panel and the second sliding panel respectively, and the first sliding panel is slidably connected to the side of the processing table through the cooperation of the first guide slider and the first guide slot, and the second sliding panel is slidably connected to the side of the processing table through the cooperation of the second guide slider and the second guide slot;

The surface of the first connection block is connected to the surface of the first sliding panel, and the surface of the second connection block is connected to the surface of the second sliding panel.

Furthermore, one end of the air injection tube away from the air pump is arranged on the inner top of the flexible airbag.

Furthermore, one end of the paste extraction tube away from the paste extraction pump is arranged at the inner bottom of the solder paste storage barrel, and one end of the paste injection tube away from the solder paste storage barrel opens vertically downward.

The present invention provides a welding device for solid-state hard disk processing. By adopting a scraper system with an elastic airbag and a micro high-definition camera, it has significant advantages over the method of directly using computer vision technology to identify hollow depressions and their volumes in the prior art. The system uses the physical contact and deformation of the airbag to detect and analyze the hollow area in the solder paste coating process in real time and accurately, and records the deformation of the airbag through a micro high-definition camera to accurately calculate the position and volume of the hollow area. This method not only avoids the detection error of traditional computer vision technology under complex lighting conditions, but also ensures high detection accuracy through direct contact, eliminating blind spots caused by light reflection and occlusion. In general, the technical solution integrates the dual advantages of physical contact detection and intelligent visual analysis, achieves higher detection accuracy and real-time repair capabilities, and significantly improves the quality and production efficiency of solder paste coating.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of a welding device for processing a solid state hard disk.

FIG. 2 is a schematic diagram of a partial structure of a welding device for processing a solid state hard disk.

FIG3 is a schematic diagram of the structure of a solder paste scraper, a mounting panel, a flexible airbag, and an air pump in a welding device for processing a solid state hard disk.

FIG. 4 is a schematic structural diagram of a flexible airbag in a welding device for processing a solid state hard disk in a cross-sectional state.

FIG. 5 is a schematic diagram of the side structure of a welding device for processing a solid state hard disk.

FIG. 6 is an enlarged view of point A in FIG. 5 of a welding device for processing a solid state hard disk.

In the figure: 1. processing table; 2. air pump; 3. precision drive assembly; 31. bearing seat; 32. ball nut; 33. ball screw; 34. guide square hole; 35. servo motor; 4. multi-directional linkage platform; 5. first sliding panel; 6. flexible airbag; 7. mounting panel; 8. circuit board placement plate; 9. circuit board placement slot; 10. solder paste storage barrel; 11. first connecting block; 12. first precision electric cylinder; 13. second connecting block; 14. second precision electric cylinder; 15. second sliding panel; 16. solder paste scraper; 17. air injection pipe; 18. miniature camera; 19. paste pump; 20. paste injection pipe.

DETAILED DESCRIPTION

In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

As shown in Figures 1 to 6, an embodiment of the present invention provides a welding device for solid-state hard disk processing, including a processing table 1, and a circuit board placement plate 8 is connected to the surface of the processing table 1. A plurality of circuit board placement grooves 9 are provided on the surface of the circuit board placement plate 8. The shape of the circuit board placement grooves 9 is adapted to the shape of the circuit board to be welded. The inside of the circuit board placement grooves 9 is used to sequentially place the circuit board to be welded and the scraper template adapted to the circuit board. The depth of the circuit board placement grooves 9 is the same as the sum of the thickness of the circuit board and the scraper template, that is, after the circuit board and the scraper template are both placed in the circuit board placement grooves 9, the surface of the scraper template and the top surface of the circuit board placement plate 8 are on the same plane.

A second sliding panel 15 is slidably connected to the side of the processing table 1, and a precision driving component 3 is arranged on the surface of the second sliding panel 15. The precision driving component 3 can adopt a precision screw drive structure or a precision cylinder drive structure.

The outside of the precision drive component 3 is connected to a solder paste scraper 16, and the side of the solder paste scraper 16 is connected to a mounting panel 7, a flexible airbag 6 is mounted on the surface of the mounting panel 7, and a plurality of miniature cameras 18 are mounted inside the flexible airbag 6, an air pump 2 is mounted on the side of the mounting panel 7, and an air injection pipe 17 is connected to the outside of the air pump 2, and one end of the air injection pipe 17 away from the air pump 2 is arranged at the inner top of the flexible airbag 6, after the air pump 2 is working, gas can be injected into the inside of the flexible airbag 6 through the air injection pipe 17, and after the flexible airbag 6 is fully inflated after the air injection is completed, the bottom surface of the flexible airbag 6 is in a flat state, and is in a state of contact with the surface of the circuit board placement plate 8;

The bottom of the flexible airbag 6 is made of silicone material, and the bottom surface of the flexible airbag 6 is provided with a polytetrafluoroethylene coating, and the surrounding of the flexible airbag 6 is made of chloroprene rubber or polyurethane material.

The side of the processing table 1 is slidably connected with a first sliding panel 5, and the surface of the first sliding panel 5 is installed with a multi-directional linkage platform 4, the surface of the multi-directional linkage platform 4 is connected with a solder paste storage barrel 10, the multi-directional linkage platform 4 is a precision XY axis motion platform, and the side of the solder paste storage barrel 10 is installed with a paste pump 19, and the two sides of the surface of the paste pump 19 are respectively connected with a paste extraction tube and a paste injection tube 20, and the end of the paste extraction tube away from the paste extraction pump 19 is arranged at the inner bottom of the solder paste storage barrel 10, and the end of the paste injection tube 20 away from the solder paste storage barrel 10 opens vertically downward, and the height of the opening is close to the surface height of the circuit board placement plate 8;

A first precision electric cylinder 12 and a second precision electric cylinder 14 are installed on the side of the processing table 1 , and one end of the first precision electric cylinder 12 is connected to the first connecting block 11 , and one end of the second precision electric cylinder 14 is connected to the second connecting block 13 .

The side of the processing table 1 is provided with a first guide slot and a second guide slot, and the sides of the first sliding panel 5 and the second sliding panel 15 are respectively provided with a first guide slider and a second guide slider, the first sliding panel 5 is slidably connected to the side of the processing table 1 through the cooperation of the first guide slider and the first guide slot, and the second sliding panel 15 is slidably connected to the side of the processing table 1 through the cooperation of the second guide slider and the second guide slot;

The surface of the first connection block 11 is connected to the surface of the first sliding panel 5 , and the surface of the second connection block 13 is connected to the surface of the second sliding panel 15 .

In one embodiment of the present invention, when using the device to print solder paste for multiple circuit boards of solid-state hard drives to be soldered, the multiple circuit boards are first placed in turn into a plurality of circuit board placement grooves 9 opened on the surface of the circuit board placement plate 8, and then multiple scraper templates are placed on the circuit boards in turn.

After the circuit board and the template are properly placed, the first precision electric cylinder 12 is turned on, so that the first precision electric cylinder 12 drives the first sliding panel 5 to slide on the side of the processing table 1 until the multi-directional linkage platform 4 is located directly above the circuit board placement plate 8. Subsequently, the multi-directional linkage platform 4 is controlled to work according to the position of the opening of the template, so that the multi-directional linkage platform 4 drives the solder paste storage barrel 10 and the paste injection tube 20 to move to the vicinity of the opening. After that, the solder paste stored in the solder paste storage barrel 10 is injected into the paste injection tube 20 through the paste pump 19, and the paste injection tube 20 injects the solder paste into the opening or the vicinity of the opening. After all the openings of the template are filled with solder paste, the first precision electric cylinder 12 is turned on again, and the first sliding panel 5 is restored to its original position.

After the solder paste at the template opening is filled and the first sliding panel 5 returns to its original position, the second precision electric cylinder 14 is turned on, and the second precision electric cylinder 14 drives the second sliding panel 15 to slide on the side of the processing table 1 until the second sliding panel 15 is located directly above the circuit board placement plate 8, and at this time, the scraping edge of the solder paste scraper 16 is in contact with the surface of the circuit board placement plate 8, and then, the solder paste scraper 16 is driven by the precision drive component 3 to move on the surface of the circuit board placement plate 8, and the solder paste scraper 16 will scrape the solder paste on the template flat, so that the preset position on the surface of the circuit board below the template is evenly covered with solder paste.

However, due to the complex structure of SSD circuit boards, some circuit boards have large openings on the surface of the scraping template. Those skilled in the art have found that these large openings often have hollow depressions in local areas after scraping, resulting in uneven scraping and affecting the final effect.

In view of the above technical defects, in the present application, after the solder paste on the template is scraped flat by the precision drive component 3 and the solder paste scraper 16, the air pump 2 is turned on so that the air pump 2 injects gas into the interior of the flexible airbag 6 and the flexible airbag 6 is fully expanded. At this time, the lower surface of the flexible airbag 6 will be in contact with the circuit board placement plate 8;

After the flexible airbag 6 is fully inflated, the air pump 2 is turned on again to continue to inject part of the gas into the flexible airbag 6. Since the bottom of the flexible airbag 6 is made of silicone material and the surrounding is made of chloroprene rubber or polyurethane material, the bottom is more likely to deform when receiving a large air pressure. When there is a hollow depression in the solder paste in the template opening, the deformed flexible airbag 6 will enter the hollow depression and fill it up. During this process, the micro camera 18 set inside the flexible airbag 6 will continue to monitor and analyze the entire deformation process. Subsequently, the camera sends the deformation process data to the computer system to obtain the deformation position (hollow depression position) and deformation volume (volume of the hollow depression). Afterwards, the gas inside the flexible airbag 6 is discharged through the air pump 2 to restore it to its initial state.

Since the bottom surface of the flexible airbag 6 is provided with a polytetrafluoroethylene coating, and the coating has excellent non-stick properties, the solder paste will not adhere to the bottom surface of the airbag. After obtaining the deformation position and volume data, the second sliding panel 15 is reset, and the first sliding panel 5 is placed above the circuit board placement plate 8 again. Subsequently, the computer system sends the deformation position data to the multi-directional linkage platform 4 and the deformation volume data to the paste pump 19. The multi-directional linkage platform 4 drives the paste injection tube 20 to move to the top of the hollow depression, and injects the same amount of solder paste as the deformation volume through the paste pump 19, thereby filling the hollow depression inside the opening.

In summary, the scraper system with elastic airbags and micro HD cameras has significant advantages over the existing method of directly using computer vision technology to identify hollow depressions and their volumes. The system uses the physical contact and deformation of the airbag to detect and analyze the hollow area in the solder paste coating process in real time and accurately, and records the deformation of the airbag through a micro HD camera to accurately calculate the position and volume of the hollow area. This method not only avoids the detection error of traditional computer vision technology under complex lighting conditions, but also ensures high detection accuracy through direct contact and eliminates blind spots caused by light reflection and occlusion. At the same time, the airbag surface uses non-stick materials such as fluorosilicone rubber or PTFE coating to effectively prevent solder paste adhesion and ensure smooth detection and repair processes. The further optimized multi-directional mobile paste injection tube and intelligent pump system can accurately inject the right amount of solder paste and scrape it flat according to the real-time detection results to ensure uniform solder paste coating. Overall, this technical solution integrates the dual advantages of physical contact detection and intelligent visual analysis, achieves higher detection accuracy and real-time repair capabilities, and significantly improves the quality and production efficiency of solder paste coating.

In this embodiment, the precision drive assembly 3 includes:

A bearing seat 31 and a servo motor 35 are respectively installed on both sides of the surface of the second sliding panel 15, and a ball screw 33 is installed inside the bearing seat 31 and at the output end of the servo motor 35, and a ball nut 32 is meshedly connected to the surface of the ball screw 33;

A guide square hole 34 is formed on the surface of the second sliding panel 15 , and the ball nut 32 is slidably connected inside the guide square hole 34 . The surface of the ball nut 32 is connected to the surface of the solder paste scraper 16 .

When it is necessary to drive the solder paste scraper 16 to move, the servo motor 35 can be turned on. The servo motor 35 drives the ball screw 33 to rotate through the bearing seat 31, so that the ball nut 32 can move smoothly and accurately on the outside of the ball screw 33. Since the outer side of the ball nut 32 is tightly attached to the inner wall of the guide square hole 34, the ball nut 32 will drive the solder paste scraper 16 to move in a straight line.

In one embodiment of the present invention, the inner bottom of the flexible airbag 6 is provided with a plurality of marking points made of reflective material, and the diameter of the marking points is 0.5-1 mm. The reflective material may be a micro-prismatic reflective film or a glass bead reflective coating.

In this embodiment, by setting these reflective marking points, the micro camera 18 can accurately monitor and analyze the deformation of the flexible airbag 6, so that the hollow area and its volume that appear during the solder paste coating process can be detected and calculated in real time and accurately. This not only improves the accuracy and reliability of detection, but also avoids the identification blind area caused by light reflection and shading, and effectively improves the uniformity and overall quality of solder paste coating.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. A welding device for processing a solid-state hard disk, comprising a processing table (1), wherein a circuit board placement plate (8) is connected to the surface of the processing table (1), and a plurality of circuit board placement grooves (9) are provided on the surface of the circuit board placement plate (8), characterized in that a second sliding panel (15) is slidably connected to the side of the processing table (1), and a precision drive component (3) is arranged on the surface of the second sliding panel (15), a solder paste scraper (16) is connected to the outer side of the precision drive component (3), and a mounting panel (7) is connected to the side of the solder paste scraper (16), and a flexible airbag (6) is installed on the surface of the mounting panel (7), and a plurality of miniature cameras (18) are installed inside the flexible airbag (6), and an air pump (2) is installed on the side of the mounting panel (7), and an air injection pipe (17) is connected to the outer side of the air pump (2); The side of the processing table (1) is slidably connected to a first sliding panel (5), and a multi-directional linkage platform (4) is installed on the surface of the first sliding panel (5), the surface of the multi-directional linkage platform (4) is connected to a solder paste storage barrel (10), and a solder paste pump (19) is installed on the side of the solder paste storage barrel (10), and the two sides of the surface of the solder paste pump (19) are respectively connected to a paste extraction tube and a paste injection tube (20); A first precision electric cylinder (12) and a second precision electric cylinder (14) are installed on the side of the processing table (1), and one end of the first precision electric cylinder (12) is connected to a first connection block (11), and one end of the second precision electric cylinder (14) is connected to a second connection block (13). 2. A welding device for solid state hard disk processing according to claim 1, characterized in that the inner bottom of the flexible airbag (6) is provided with a plurality of marking points made of reflective material, and the diameter of the marking points is 0.5-1 mm. 3. A welding device for solid state hard disk processing according to claim 2, characterized in that the reflective material is a micro-prismatic reflective film or a glass bead reflective coating. 4. The welding device for solid state hard disk processing according to claim 1, characterized in that the precision drive component (3) comprises: A bearing seat (31) and a servo motor (35) are respectively installed on both sides of the surface of the second sliding panel (15), and a ball screw (33) is installed inside the bearing seat (31) and at the output end of the servo motor (35), and a ball nut (32) is meshedly connected to the surface of the ball screw (33); A guide square hole (34) is provided on the surface of the second sliding panel (15), and a ball nut (32) is slidably connected inside the guide square hole (34), and the surface of the ball nut (32) is connected to the surface of the solder paste scraper (16). 5. A welding device for solid state hard disk processing according to claim 1, characterized in that the bottom of the flexible airbag (6) is made of silicone material, and the bottom surface of the flexible airbag (6) is provided with a polytetrafluoroethylene coating, and the surrounding of the flexible airbag (6) is made of chloroprene rubber or polyurethane material. 6. A welding device for processing a solid-state hard disk according to claim 1, characterized in that a first guide slot and a second guide slot are provided on the side of the processing table (1), and a first guide slider and a second guide slider are installed on the side of the first sliding panel (5) and the second sliding panel (15), respectively, and the first sliding panel (5) is slidably connected to the side of the processing table (1) through the cooperation of the first guide slider and the first guide slot, and the second sliding panel (15) is slidably connected to the side of the processing table (1) through the cooperation of the second guide slider and the second guide slot; The surface of the first connection block (11) is connected to the surface of the first sliding panel (5), and the surface of the second connection block (13) is connected to the surface of the second sliding panel (15). 7. A welding device for solid state hard disk processing according to claim 1, characterized in that one end of the gas injection pipe (17) away from the air pump (2) is arranged on the inner top of the flexible air bag (6). 8. A welding device for solid-state hard disk processing according to claim 1, characterized in that one end of the paste extraction tube away from the paste extraction pump (19) is arranged at the inner bottom of the solder paste storage barrel (10), and one end of the paste injection tube (20) away from the solder paste storage barrel (10) opens vertically downward.