Air exhaust equipment for preparing electronic-grade glass fiber cloth composite substrate

Abstract

The utility model discloses air exhaust equipment for preparing an electronic grade glass fiber cloth composite substrate, and relates to the technical field of glass fiber cloth composite substrate processing, the air exhaust equipment comprises a working table and a lower vacuum cover, the upper surface of the working table is provided with a guide sliding strip, and the rear side of the working table is provided with a vacuum pump; supporting plates are installed on the left side and the right side of the workbench correspondingly, a servo motor is installed above a top plate, a first movable plate is installed on a ball screw, an upper heating plate is installed below the top plate through a hydraulic rod assembly, and a lower heating plate is installed at the inner bottom of a lower vacuum cover. And a connecting block is mounted on the front surface of the upper vacuum cover. According to the air exhausting equipment for preparing the electronic-grade glass fiber cloth composite substrate, the lower vacuum cover is arranged, after the substrate is exhausted, the lower vacuum cover is pulled forwards through the handle, so that the lower vacuum cover is far away from the upper heating plate, and workers are not prone to being scalded by waste heat on the upper heating plate when taking materials.

Description

Technical Field

[0001] This utility model relates to the field of glass fiber cloth composite substrate processing technology, specifically to an air exhaust device for the preparation of electronic-grade glass fiber cloth composite substrates. Background Technology

[0002] In today's rapidly developing electronics and information industry, electronic-grade glass fiber composite substrates, as a key basic material for printed circuit boards (PCBs), play a decisive role in the stability, miniaturization, and high performance of electronic devices. PCBs are widely used in various electronic products, from everyday smartphones and tablets to complex computer servers and communication base station equipment, with continuously growing demand and increasingly stringent requirements.

[0003] In the fabrication of electronic-grade glass fiber cloth composite substrates, a crucial step is the removal of air from the substrate's interior and interlayer layers. Residual air will form bubbles or voids within the substrate, significantly impacting its mechanical strength and leading to serious problems such as delamination and breakage during subsequent processing and use. Simultaneously, the presence of bubbles will also significantly affect the substrate's electrical performance, such as increasing signal transmission loss and reducing insulation performance—unacceptable for modern electronic devices that demand high speed, high frequency, and high reliability.

[0004] For example, Chinese utility model patent application number 201821207340.1 discloses a vacuum hot pressing forming device, which is equipped with an upper vacuum hood and a lower vacuum hood, which can quickly and effectively create a vacuum environment, facilitating subsequent extrusion forming operations. The cooling water plate can control the temperature during extrusion within a suitable range, and the use of sealing gaskets and sealing rings improves the airtightness of the vacuum environment. However, the device still has certain defects.

[0005] After the electronic-grade glass fiber cloth composite substrate is hot-pressed to remove air, it needs to be removed from below the heating plate. This makes it easy to get burned by the heating plate when manually handling the material, and at the same time, a long material cooling time is required.

[0006] Therefore, we propose an air venting device for the fabrication of electronic-grade glass fiber cloth composite substrates to solve the problems mentioned above. Utility Model Content

[0007] The purpose of this invention is to provide an air exhaust device for the preparation of electronic-grade glass fiber cloth composite substrates, in order to solve the problems mentioned in the background art. Currently, after hot pressing and exhausting the electronic-grade glass fiber cloth composite substrate, the substrate needs to be removed from below the heating plate, which makes it easy to be burned by the heating plate when manually handling the material. At the same time, a long material cooling time is required.

[0008] To achieve the above objectives, the present invention provides the following technical solution: an air exhaust device for the preparation of electronic-grade glass fiber cloth composite substrates, comprising a worktable and a lower vacuum hood, wherein a guide slide is installed on the upper surface of the worktable and the lower vacuum hood is provided on the guide slide, and a vacuum pump is installed on the rear side of the worktable;

[0009] Support plates are installed on both the left and right sides of the workbench, and a top plate is installed above the support plates. A servo motor is installed above the top plate, and a ball screw is installed below the servo motor via an output shaft. A first movable plate is installed on the ball screw, and an upper vacuum shroud is installed on the left side of the first movable plate. An upper heating plate is installed below the top plate via a hydraulic rod assembly, and a lower heating plate is installed at the bottom inner part of the lower vacuum shroud.

[0010] A connecting block is installed on the front surface of the upper vacuum shroud, and a groove is formed on the upper surface of the connecting block. A forward and reverse motor is installed on the right side inside the groove. A first gear is installed on the right side of the forward and reverse motor via an output shaft. Fixing blocks are installed on both the left and right sides of the connecting block, and a connecting rod is installed between the fixing blocks via a bearing seat. A fan assembly is installed on the connecting rod, and a second gear is installed on the right end of the connecting rod.

[0011] Preferably, a limit block is installed on the guide slide, and a guide groove is formed on the lower surface of the lower vacuum cover, through which the lower vacuum cover is slidably connected to the guide slide.

[0012] With the above structural design, the lower vacuum cover can move back and forth along the guide rail when under force, which makes it easy to adjust the position of the lower vacuum cover. After the substrate is degassed, the lower vacuum cover can be pulled forward by the handle to move the lower vacuum cover away from the upper heating plate, so that the staff will not be burned by the residual heat on the upper heating plate when picking up materials.

[0013] Preferably, a handle is installed on the left side of the lower vacuum shroud, and the upper part of the vacuum pump is connected to the interior of the lower vacuum shroud via a connecting pipe, which is designed to be retractable.

[0014] With the above structural design, the upper vacuum shroud is driven by a servo motor to rotate the ball screw, causing the first movable plate to descend and cooperate with the lower vacuum shroud to tightly cover the glass fiber cloth composite substrate placed between them. At the same time, after the vacuum pump is started, the air inside the lower vacuum shroud is extracted through the connecting pipe to form a negative pressure environment, which further enhances the vacuum environment. Then, the hydraulic rod assembly is started to move the upper heating plate downward. The upper heating plate and the lower heating plate inside the lower vacuum shroud squeeze the glass fiber cloth composite substrate, effectively expelling the air inside the substrate and preventing residual air bubbles from affecting the substrate performance.

[0015] Preferably, the first movable plate and the ball screw form a sliding connection structure, and the lower end of the ball screw is connected to the upper surface of the worktable through a bearing seat.

[0016] With the above structural design, the servo motor is started, and the servo motor drives the ball screw to rotate through the output shaft. The ball screw drives the first movable plate to move downward, and the first movable plate drives the upper vacuum cover to move downward, cooperating with the lower vacuum cover.

[0017] Preferably, a second movable plate is installed on the left side of the upper vacuum hood. The second movable plate and the first movable plate are symmetrical about each other along the center line of the upper vacuum hood, and a guide rod passes through both the second movable plate and the first movable plate. The second movable plate, the first movable plate and the guide rod are slidably connected, and the guide rod is fixed between the worktable and the top plate.

[0018] With the above structural design, when the upper vacuum cover moves up and down under force, the second movable plate and the first movable plate on its left and right sides move up and down along the guide rod, so that the upper vacuum cover is more stable when moving up and down and will not deviate.

[0019] Preferably, the upper heating plate is located below the upper vacuum shroud, the hydraulic rod assembly passes through the upper vacuum shroud, and a sealing gasket is provided at the intersection of the upper vacuum shroud and the hydraulic rod assembly.

[0020] With the above structural design, the hydraulic rod assembly is activated, which drives the upper heating plate to move downwards and compress the substrate. The sealing gasket can improve the sealing between the upper and lower vacuum hoods.

[0021] Preferably, the fan assembly has multiple fan components arranged at equal intervals, and the second gear meshes with the first gear.

[0022] With the above structural design, when the forward and reverse motors start, their output shaft drives the first gear to rotate, which in turn drives the second gear to rotate. The meshing second gear causes the connecting rod to rotate, which in turn drives the fan assembly to rotate back and forth in small amplitudes, thereby improving the heat dissipation efficiency of the substrate inside the lower vacuum chamber and the heat dissipation efficiency of the waste heat of the lower heating plate.

[0023] Compared with the prior art, the beneficial effects of this utility model are: the air exhaust device for preparing electronic-grade glass fiber cloth composite substrates:

[0024] 1. A lower vacuum cover is provided. After the substrate is degassed, the lower vacuum cover can be pulled forward by the handle to move it away from the upper heating plate, so that the staff are less likely to be burned by the residual heat on the upper heating plate when handling materials.

[0025] 2. Equipped with a fan assembly, the forward and reverse motors start, and its output shaft drives the first gear to rotate. The first gear drives the second gear to rotate, and the meshing second gear causes the connecting rod to rotate, thereby driving the fan assembly to rotate back and forth in small amplitudes. This improves the heat dissipation efficiency of the substrate inside the lower vacuum chamber and the heat dissipation efficiency of the residual heat of the lower heating plate, allowing workers to remove parts in a short time and improving the processing efficiency of the substrate. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall main structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the overall rear view structure of this utility model;

[0028] Figure 3 This is a schematic diagram of the structure of the present invention when picking up a workpiece;

[0029] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0030] Figure 5 This is a schematic diagram showing the position and structure of the lower vacuum shroud and guide slide bar of this utility model;

[0031] Figure 6 This is a schematic diagram of the fan assembly installation structure of this utility model.

[0032] In the diagram: 1. Workbench; 2. Guide slide; 3. Limit block; 4. Lower vacuum hood; 5. Handle; 6. Guide groove; 7. Vacuum pump; 8. Connecting pipe; 9. Support plate; 10. Top plate; 11. Servo motor; 12. Ball screw; 13. First movable plate; 14. Upper vacuum hood; 15. Second movable plate; 16. Guide rod; 17. Hydraulic rod assembly; 18. Upper heating plate; 19. Lower heating plate; 20. Connecting block; 21. Groove; 22. Forward and reverse motor; 23. First gear; 24. Fixing block; 25. Connecting rod; 26. Fan assembly; 27. Second gear. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Please see Figures 1-6This utility model provides a technical solution: an air venting device for preparing electronic-grade glass fiber cloth composite substrates, comprising a worktable 1, a guide slide 2, a limiting block 3, a lower vacuum hood 4, a handle 5, a guide groove 6, a vacuum pump 7, a connecting pipe 8, a support plate 9, a top plate 10, a servo motor 11, a ball screw 12, a first movable plate 13, an upper vacuum hood 14, a second movable plate 15, a guide rod 16, a hydraulic rod assembly 17, an upper heating plate 18, a lower heating plate 19, a connecting block 20, and a groove. 21. Forward and reverse motors; 22. First gear; 23. Fixing block; 24. Connecting rod; 25. Fan assembly; 26. Second gear; 27. A guide slide 2 is installed on the upper surface of the worktable 1, and a limit block 3 is installed on the guide slide 2. A guide groove 6 is opened on the lower surface of the lower vacuum cover 4. The lower vacuum cover 4 is slidably connected to the guide slide 2 through the guide groove 6. When subjected to force, the lower vacuum cover 4 can move back and forth along the guide slide 2, thereby facilitating the adjustment of the position of the lower vacuum cover 4. After the substrate is degassed, it is pulled... Hand 5 pulls the lower vacuum cover 4 forward, moving it away from the upper heating plate 18. This prevents workers from being burned by the residual heat of the upper heating plate 18 when handling materials. The lower vacuum cover 4 is mounted on the guide slide 2. A vacuum pump 7 is installed on the rear side of the workbench 1. A handle 5 is installed on the left side of the lower vacuum cover 4. The upper part of the vacuum pump 7 is connected to the interior of the lower vacuum cover 4 via a connecting pipe 8. The connecting pipe 8 has a telescopic design. The upper vacuum cover 14 is driven by the servo motor 11 to rotate the ball screw 12, causing the first movable plate 13 to descend. It cooperates with the lower vacuum cover 4 to tightly cover the glass fiber cloth composite substrate placed therein. At the same time, after the vacuum pump 7 is started, the air inside the lower vacuum cover 4 is extracted through the connecting pipe 8, forming a negative pressure environment and further enhancing the vacuum environment. Then, the hydraulic rod assembly 17 is started to move the upper heating plate 18 downward. The upper heating plate 18 and the lower heating plate 19 inside the lower vacuum cover 4 squeeze the glass fiber cloth composite substrate, effectively expelling the air inside the substrate and preventing residual air bubbles from affecting the substrate performance.

[0035] Support plates 9 are installed on both the left and right sides of the workbench 1, and a top plate 10 is installed above the support plates 9. A servo motor 11 is installed above the top plate 10, and a ball screw 12 is installed below the servo motor 11 via an output shaft. A first movable plate 13 is installed on the ball screw 12, and a sliding connection structure is formed between the first movable plate 13 and the ball screw 12. The lower end of the ball screw 12 is connected to the upper surface of the workbench 1 via a bearing seat. When the servo motor 11 is started, the servo motor 11 drives the ball screw 12 to rotate via the output shaft. The ball screw 12 drives the first movable plate 13 to move downward, and the first movable plate 13 drives the upper vacuum cover 14 to move downward, cooperating with the lower vacuum cover 4. The upper vacuum cover 14 is installed on the left side of the first movable plate 13, and a second movable plate 15 is installed on the left side of the upper vacuum cover 14. The second movable plate 15 and the first movable plate 13 are symmetrical about each other along the center line of the upper vacuum cover 14, and the second movable plate 15 and the first movable plate 13 are symmetrical about each other. Guide rods 16 are threaded through the first movable plate 13. The second movable plate 15, the first movable plate 13 and the guide rods 16 are slidably connected. The guide rods 16 are fixed between the worktable 1 and the top plate 10. When the upper vacuum cover 14 moves up and down under force, the second movable plate 15 and the first movable plate 13 on its left and right sides move up and down along the guide rods 16, so that the upper vacuum cover 14 is more stable when moving up and down and will not deviate. The upper heating plate 18 is installed under the top plate 10 through the hydraulic rod assembly 17. The lower heating plate 19 is installed at the inner bottom of the lower vacuum cover 4. The upper heating plate 18 is located below the upper vacuum cover 14. The hydraulic rod assembly 17 passes through the upper vacuum cover 14. A sealing gasket is provided at the intersection of the upper vacuum cover 14 and the hydraulic rod assembly 17. When the hydraulic rod assembly 17 is activated, the hydraulic rod assembly 17 can drive the upper heating plate 18 to move downward and squeeze the substrate. The sealing gasket can improve the sealing between the upper vacuum cover 14 and the lower vacuum cover 4.

[0036] A connecting block 20 is installed on the front surface of the upper vacuum cover 14, and a groove 21 is formed on the upper surface of the connecting block 20. A forward and reverse motor 22 is installed on the right side inside the groove 21. A first gear 23 is installed on the right side of the forward and reverse motor 22 through the output shaft. Fixing blocks 24 are installed on both the left and right sides of the connecting block 20, and a connecting rod 25 is installed between the fixing blocks 24 through a bearing seat. A fan assembly 26 is installed on the connecting rod 25. A second gear 27 is installed on the right end of the connecting rod 25. Multiple fan assemblies 26 are evenly arranged. The second gear 27 meshes with the first gear 23. When the forward and reverse motor 22 is started, its output shaft drives the first gear 23 to rotate. The first gear 23 drives the second gear 27 to rotate. The meshing second gear 27 causes the connecting rod 25 to rotate, thereby driving the fan assembly 26 to rotate back and forth in a small amplitude, thereby improving the heat dissipation efficiency of the substrate inside the lower vacuum cover 4 and the heat dissipation efficiency of the waste heat of the lower heating plate 19.

[0037] Working principle: When using the air removal equipment for preparing electronic-grade glass fiber cloth composite substrates, firstly, during equipment installation, ensure that the workbench 1 is placed horizontally and all components are securely installed. Place the electronic-grade glass fiber cloth composite substrate to be processed on the lower vacuum chamber 4. Push the lower vacuum chamber 4 along the guide slide 2 to the position of the limit block 3 by the handle 5. The lower vacuum chamber 4 is located directly below the upper vacuum chamber 14. The upper vacuum chamber 14 is driven by the ball screw 12 of the servo motor 11 to rotate, causing the first movable plate 13 to descend. It cooperates with the lower vacuum chamber 4 to tightly cover the glass fiber cloth composite substrate placed therein. At the same time, after the vacuum pump 7 is started, the air inside the lower vacuum chamber 4 is extracted through the connecting pipe 8 to form a negative pressure environment, further enhancing the vacuum environment. Then, the hydraulic rod assembly 17 is started to drive the upper heating plate 18 to move downward. The upper heating plate 18 and the lower heating plate 19 inside the lower vacuum chamber 4 squeeze the glass fiber cloth composite substrate, effectively expelling the air inside the substrate and preventing residual air bubbles from affecting the substrate performance.

[0038] After the substrate is degassed, the lower vacuum chamber 4 is pulled forward using handle 5, moving it away from the upper heating plate 18. This prevents workers from being burned by residual heat from the upper heating plate 18 when retrieving the substrate. Simultaneously, the forward and reverse motor 22 starts, its output shaft driving the first gear 23 to rotate. The first gear 23 drives the second gear 27 to rotate, which in turn rotates the connecting rod 25, driving the fan assembly 26 to reciprocate in small amplitudes. This improves the heat dissipation efficiency of the substrate inside the lower vacuum chamber 4 and the residual heat of the lower heating plate 19, allowing workers to retrieve the substrate quickly and increasing substrate processing efficiency. This completes a series of tasks. Content not described in detail in this specification is prior art known to those skilled in the art.

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An air exhausting apparatus for preparing an electronic-grade glass cloth composite substrate, comprising a worktable (1) and a lower vacuum cover (4), characterized in that: The upper surface of the workbench (1) is provided with a guide slide (2), and a lower vacuum cover (4) is arranged on the guide slide (2); and a vacuum pump (7) is arranged on the rear side of the workbench (1). Support plates (9) are arranged on the left and right sides of the workbench (1), and a top plate (10) is arranged above the support plates (9); a servo motor (11) is arranged above the top plate (10), and a ball screw (12) is arranged below the servo motor (11) through an output shaft; a first movable plate (13) is arranged on the ball screw (12); an upper vacuum cover (14) is arranged on the left side of the first movable plate (13); and an upper heating plate (18) is arranged below the top plate (10) through a hydraulic rod assembly (17); and a lower heating plate (19) is arranged on the inner bottom of the lower vacuum cover (4). A connecting block (20) is arranged on the front surface of the upper vacuum cover (14), and a groove (21) is arranged on the upper surface of the connecting block (20); a reversible motor (22) is arranged inside the groove (21) on the right side; a first gear (23) is arranged on the right side of the reversible motor (22) through an output shaft; fixed blocks (24) are arranged on the left and right sides of the connecting block (20); a connecting rod (25) is arranged between the fixed blocks (24) through a bearing seat; a fan assembly (26) is arranged on the connecting rod (25); and a second gear (27) is arranged on the right end of the connecting rod (25).

2. The air exhausting apparatus for preparing an electronic-grade glass cloth composite substrate according to claim 1, characterized by: A limiting block (3) is arranged on the guide slide (2), and a guide groove (6) is arranged on the lower surface of the lower vacuum cover (4); and the lower vacuum cover (4) is slidably connected with the guide slide (2) through the guide groove (6).

3. The air exhausting apparatus for preparing an electronic-grade glass cloth composite substrate according to claim 2, characterized by: A handle (5) is arranged on the left side of the lower vacuum cover (4), and the upper surface of the vacuum pump (7) is connected with the inside of the lower vacuum cover (4) through a connecting pipe (8); and the connecting pipe (8) is designed in an extensible structure.

4. The air exhausting apparatus for preparing an electronic-grade glass cloth composite substrate according to claim 1, characterized by: The first movable plate (13) and the ball screw (12) are slidably connected; the lower end of the ball screw (12) is connected with the upper surface of the workbench (1) through a bearing seat.

5. The air exhausting apparatus for preparing an electronic-grade glass cloth composite substrate according to claim 1, characterized by: A second movable plate (15) is arranged on the left side of the upper vacuum cover (14); the second movable plate (15) and the first movable plate (13) are mutually symmetrical along the center line of the upper vacuum cover (14); guide rods (16) are arranged on the second movable plate (15) and the first movable plate (13); and the second movable plate (15), the first movable plate (13) and the guide rods (16) are slidably connected; and the guide rods (16) are fixed between the workbench (1) and the top plate (10).

6. The air exhausting apparatus for preparing an electronic-grade glass cloth composite substrate according to claim 1, characterized by: The upper heating plate (18) is arranged below the upper vacuum cover (14), the hydraulic rod assembly (17) penetrates the upper vacuum cover (14), and a sealing gasket is arranged at the intersection position of the upper vacuum cover (14) and the hydraulic rod assembly (17).

7. The air exhausting apparatus for preparing an electronic-grade glass cloth composite substrate according to claim 1, characterized by: The fan assembly (26) is arranged in multiple equidistant positions, and the second gear (27) and the first gear (23) are mutually engaged.

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