Portable ceramic hole filling device

Abstract

The utility model discloses a portable ceramic hole filling device in the technical field of hole filling processing equipment, and aims to solve the problems of huge size and poor printing compatibility of hole filling printing equipment in the prior art. The device comprises a hollow box body, the upper surface of the hollow box body is provided with a placement countersink, the bottom of the placement countersink is provided with a communication port communicated with an inner cavity of the hollow box body, the hollow box body is further provided with a first negative pressure pipe communicated with the inner cavity of the hollow box body, and one side of the hollow box body is provided with a silk-screen printing module; the silk-screen printing module at least comprises a scraping pipe and a printing screen plate, the section of the scraping pipe is in a hollow rectangular shape, an opening of the scraping pipe faces downwards, and a second negative pressure pipe is arranged on the scraping pipe; according to the utility model, through hole printing and blind hole printing are compatible in the hole filling printing operation, vacuum pumping is carried out by utilizing the scraping pipe structure, so that the requirement for setting negative pressure above is reduced, bubbles generated when different hole types are compatible to be printed can be reduced, meanwhile, the size requirement of equipment is effectively reduced, and the production and processing of small parts are facilitated.

Description

Technical Field

[0001] This utility model relates to a lightweight ceramic filling device, belonging to the technical field of filling processing equipment. Background Technology

[0002] Via filling printing is primarily used in the electronic circuit manufacturing industry, especially in the processing of multilayer circuit boards (PCBs) and ceramic substrates. This technology mainly fills the holes (including through holes and blind holes) in printed circuit boards to meet the structural and electrical performance requirements of the circuit boards. The main applications of via filling printing include ceramic substrates, multilayer PCBs, and IC carriers. When printing to fill holes in the PCB, since there are two main types of holes—blind holes and through holes—both of which are prone to air bubbles during printing, the printing paste cannot fill the holes evenly, leading to product defects. Different negative pressure methods are needed for these two hole types to mitigate air bubble formation to some extent, resulting in large-volume via filling equipment and poor compatibility due to its complex operation. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a lightweight ceramic filling device that is compatible with both through-hole and blind-hole printing in filling and printing operations. It utilizes a scraper structure to create a vacuum, thereby reducing the need for a negative pressure setting above. This can reduce the air bubbles generated when printing different hole types, while also effectively reducing the size requirements of the equipment. It facilitates the production and processing of small parts and has good application prospects.

[0004] To achieve the above objectives, this utility model employs the following technical solution:

[0005] This utility model provides a lightweight ceramic filling device, comprising a hollow box body. The upper surface of the hollow box body is provided with a placement countersunk opening for placing a substrate. The bottom of the placement countersunk opening is provided with a communication opening connected to the inner cavity of the hollow box body. The hollow box body is also provided with a first negative pressure pipe connected to the inner cavity of the hollow box body. A screen printing module is provided on one side of the hollow box body. The screen printing module includes at least a squeegee and a printing screen. The squeegee can print the printing paste on the printing screen into the holes of the substrate through a squeegee action. The squeegee has a hollow rectangular cross-section with the opening facing downwards. The two ends of the squeegee extend to both sides in the length or width direction of the printing screen, respectively. A second negative pressure pipe is provided on the squeegee.

[0006] Specifically, the screen printing module further includes a vertical moving module, a horizontal moving module, and a clamping mechanism. The clamping mechanism is used to clamp the printing screen. The vertical moving module is used to drive the horizontal moving module and the clamping mechanism to rise and fall. The horizontal moving module is provided with a lifting mechanism at its horizontal movable end, and the scraper is located at the output end of the lifting mechanism.

[0007] Specifically, the clamping mechanism includes a positioning bracket, and the vertical moving module is used to drive the positioning bracket to rise and fall. A C-shaped plate is provided on both sides of the positioning bracket, and the openings of the two C-shaped plates are arranged opposite each other. The distance between the two C-shaped plates is sufficient to allow the printing screen to slide and be inserted between the two C-shaped plates without falling off. The C-shaped plates are also provided with a fastening mechanism for fastening the printing screen.

[0008] Specifically, the fastening mechanism includes a locking bolt threaded onto the upper surface of the C-shaped plate, and the bottom of the locking bolt is disc-shaped.

[0009] Specifically, the positioning bracket is mounted on the outer frame of the horizontal moving module.

[0010] Specifically, the lifting mechanism is provided in two sets and the scraper is provided in two sets. Each set of the lifting mechanism is used to control the lifting of one of the scraper tubes, and each scraper tube is connected to a second negative pressure pipe.

[0011] Specifically, it also includes several sealing plates. The hollow box body has multiple combinations of countersunk openings and connecting openings of different specifications. The sealing plates are used to seal the connecting openings in areas where the substrate is not placed.

[0012] Specifically, the bottom surface inside the hollow box has one and only one highest point and one and only one lowest point, the position of the highest point smoothly transitions to the position of the lowest point, and an opening and closing liquid outlet pipe is connected to the position of the lowest point inside the hollow box.

[0013] Specifically, the hollow box body has several cylindrical support columns inside, and the top surface of each support column is flush with the bottom surface where the countersunk is placed.

[0014] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0015] This invention utilizes a hollow box to support the substrate to be printed. The negative pressure below the box balances the negative pressure during through-hole printing, reducing air bubbles generated during this process. Simultaneously, the device replaces the scraper with a scraper tube. During scraping, the tube generates negative pressure within its cavity, which helps to expel air bubbles during blind hole printing, ensuring uniform filling of the printing paste. The equipment is compatible with both through-hole and blind hole printing methods and eliminates the need for additional negative pressure mechanisms outside the main structure. This effectively reduces the equipment's size, facilitates the production of small parts, and to some extent, reduces operating costs, thus simplifying production. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the ceramic filling device provided in this embodiment of the utility model;

[0017] Figure 2 This is a top view of the ceramic filling device provided in this embodiment of the utility model;

[0018] Figure 3 This utility model is as follows Figure 2 A cross-sectional view of the ceramic filling device provided in the embodiment along the AA direction;

[0019] Reference numerals: 1. Hollow box; 2. First negative pressure pipe; 3. Screen printing module; 301. Scraper; 302. Printing screen; 303. Second negative pressure pipe; 304. Vertical moving module; 305. Horizontal moving module; 306. Clamping mechanism; 3061. Positioning bracket; 3062. C-shaped plate; 3063. Locking bolt; 307. Lifting mechanism; 4. Sealing plate; 5. Liquid outlet pipe; 6. Support column. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0021] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example

[0023] This utility model provides a lightweight ceramic filling device that is compatible with both through-hole and blind-hole printing in filling and printing operations. It utilizes a scraper structure to create a vacuum, reducing the need for an upper negative pressure setting. This reduces air bubbles generated when printing different hole types, while also effectively reducing the size of the equipment, facilitating the production and processing of small parts, and showing promising application prospects. To achieve the structural function of the device, it includes a hollow box 1. Specifically, to accommodate the substrate to be filled, a countersunk opening for placing the substrate is provided on the upper surface of the hollow box 1. The bottom of the countersunk outlet has a connecting port that communicates with the inner cavity of the hollow box 1. In this configuration, the countersunk outlet and the connecting port form a stepped shape for placing the ceramic or PCB substrate to be processed. To ensure that the ink flows smoothly to the bottom of the through hole during printing, a first negative pressure pipe 2 connected to the inner cavity of the hollow box 1 is also provided on the hollow box 1. The first negative pressure pipe 2 is used to extract air from the hollow box 1 during printing, thereby reducing the air pressure inside the hollow box 1. During substrate printing, the printing ink can be actively surging downward under the negative pressure, thereby achieving uniform filling of the through hole. The screen printing function includes a screen printing module 3 on one side of the hollow housing 1. The screen printing module 3 includes at least a squeegee 301 and a printing screen 302. The squeegee 301 can print the printing paste on the printing screen 302 into the holes of the substrate through a squeegee action. The squeegee 301 has a hollow rectangular cross-section and its opening faces downwards (there is only one downward opening). To achieve sufficient squeegee action on the printing paste, both ends of the squeegee 301 need to extend to both sides of the printing screen 302 in the length or width direction. When printing blind holes, because the bottom of the blind hole is filled, it cannot be printed by the first negative pressure. The negative pressure generated by tube 2 is used for the operation. Therefore, a second negative pressure tube 303 is directly provided on the scraper tube 301. During operation, the opening at the bottom of the scraper tube 301 forms a certain sealed contact with the scraping surface to form a cavity. At this time, the second negative pressure tube 303 is used to extract the air in the cavity to form a negative pressure in the cavity. After the blind hole printing area contacts the bottom of the scraper tube 301, the air pressure of the air bubbles in the blind hole is greater than the negative pressure in the cavity, and they will automatically move upward and be released from the blind hole. This ensures the uniformity of the paste filler in the blind hole and can effectively reduce the generation of air bubbles. If it is necessary to print and fill blind holes, multiple reciprocating printing can be performed. The device acts on the printed circuit board through the combined action of the upper and lower layers of adsorption. It can be used for printing through holes and blind holes at the same time, with good compatibility. The upper adsorption is directly set on the scraper tube 1, without the need for an additional adsorption mechanism for clamping adsorption. It is convenient to operate and compact in size, which is conducive to the lightweight production of small parts and reduces the cost of the device.

[0024] This utility model provides a lightweight ceramic filling device. To achieve the automatic printing function of the screen printing module 3, the screen printing module 3 further includes a vertical moving module 304, a horizontal moving module 305, and a clamping mechanism 306. Specifically, the clamping mechanism 306 is used to clamp the printing screen 302, and the vertical moving module 304 is used to drive the horizontal moving module 305 and the clamping mechanism 306 to rise and fall. Figure 1 As shown, a lifting mechanism 307 is provided at the horizontal movable end of the horizontal moving module 305, and the scraper tube 301 is provided at the output end of the lifting mechanism 307. Through the above arrangement, the horizontal moving module 305 can indirectly drive the scraper tube 301 to move horizontally, while the lifting mechanism 307 can directly drive the scraper tube 301 to act on the upper surface of the printing screen 302. The two together realize the scraping action of the scraper tube 301. At this time, the vertical moving module 304 can drive the printing screen 302 clamped by the clamping mechanism 306 to rise and fall, so that the printing screen 302 can detach from or approach the printing substrate.

[0025] This utility model provides a lightweight ceramic filling device. To simplify the clamping action of the printing screen 302, a clamping mechanism 306 including a positioning bracket 3061 can be provided. In this case, a vertical moving module 304 is used to drive the positioning bracket 3061 to rise and fall. A C-shaped plate 3062 is provided on both sides of the positioning bracket 3061. Figures 1-3 As shown, the openings of two C-shaped plates 3062 are arranged opposite each other, and the distance between the two C-shaped plates 3062 is sufficient to allow the printing screen 302 to slide and insert between the two C-shaped plates 3062 without falling off, so that the printing screen 302 can be slidably inserted. Installing the printing screen 302 only requires sliding insertion. To ensure the connection stability of the printing screen 302, a fastening mechanism for securing the printing screen 302 can also be provided on the C-shaped plates 3062. In a preferred embodiment, the positioning bracket 3061 can be directly installed on the outer frame of the horizontal moving module 305. In this case, the height position of the printing screen 302 positioned by the positioning bracket 3061 is relatively fixed relative to the horizontal moving module 305. That is, the lifting mechanism 307 only needs to move a fixed distance to ensure that the scraper tube 301 contacts the printing surface of the printing screen 302, without the need for secondary adjustment. To facilitate operations such as replacing or fixing and removing the printing screen 302, such as... Figure 3 As shown, preferably, the fastening mechanism may include a locking bolt 3063 threaded to the upper surface of the C-shaped plate 3062, and the bottom of the locking bolt 3063 is set in a disc shape for stable contact with the side frame of the printing screen 302.

[0026] This utility model provides a lightweight ceramic filling device, which, in order to improve the efficiency of slurry scraping during printing, can be referred to... Figure 1 As shown, there are two sets of lifting mechanisms 307 and two scraper tubes 301. Each set of lifting mechanisms 307 is used to control the lifting of one scraper tube 301. A second negative pressure tube 303 is connected to each scraper tube 301. By alternating the operation of the two sets of lifting mechanisms 307, the paste scraped to one side can be scraped back by the other set of scraper tubes 301, thereby increasing the reciprocating motion frequency of the paste and achieving efficient printing.

[0027] This utility model provides a lightweight ceramic filling device. To facilitate printing on substrates of different sizes and to secure commonly used substrates, the device includes several sealing plates 4. Multiple combinations of countersunk openings and connecting openings of different specifications are provided on the top of the hollow housing 1. These combinations can accommodate multiple substrates of different or the same size, enabling simultaneous printing and improving printing efficiency. When printing substrates of different sizes, only one set of connecting openings and countersunk openings may be used. If other connecting openings are open, the negative pressure cannot function properly. The sealing plates 4 are used to seal the connecting openings in areas not where the substrates are placed, ensuring the negative pressure functions correctly. The substrate placement position is as follows... Figure 3 As shown, in order to prevent the substrate from deforming under negative pressure due to excessively large opening and strong negative pressure adsorption, several cylindrical support columns 6 can be set inside the hollow box 1. The top surface of each support column 6 can be flush with the bottom surface of the countersunk opening, so as to support the substrate supported on it by the support column 6.

[0028] This utility model provides a lightweight ceramic filling device. Considering that excess paste extracted by the bottom negative pressure during printing through-holes will fall into the hollow box 1, to facilitate the recycling of this paste, the bottom surface inside the hollow box 1 can be designed with only one highest point and only one lowest point, such as... Figure 3 As shown, the position of the highest point smoothly transitions to the position of the lowest point, and an openable and closable liquid outlet pipe 5 is connected at the lowest point inside the hollow box 1. After the slurry falls into the interior of the hollow box 1, it flows freely from high to low. When collection is required, the liquid outlet pipe 5 can be opened to fully discharge the slurry.

[0029] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A lightweight ceramic filling device, characterized in that, The device includes a hollow box (1), the upper surface of which is provided with a placement slot for placing a substrate, the bottom of which is provided with a communication port connected to the inner cavity of the hollow box (1), the hollow box (1) is also provided with a first negative pressure pipe (2) connected to the inner cavity of the hollow box (1), a screen printing module (3) is provided on one side of the hollow box (1), the screen printing module (3) includes at least a scraper (301) and a printing screen (302), the scraper (301) can print the printing paste on the printing screen (302) into the holes of the substrate by scraping and pressing, the cross section of the scraper (301) is a hollow rectangle and the opening is set downward, the two ends of the scraper (301) extend to both sides in the length or width direction of the printing screen (302), and a second negative pressure pipe (303) is provided on the scraper (301).

2. The lightweight ceramic filling device according to claim 1, characterized in that, The screen printing module (3) further includes a vertical moving module (304), a horizontal moving module (305), and a clamping mechanism (306). The clamping mechanism (306) is used to clamp the printing screen (302). The vertical moving module (304) is used to drive the horizontal moving module (305) and the clamping mechanism (306) to rise and fall. The horizontal moving module (305) is provided with a lifting mechanism (307) at its horizontal movable end. The scraper (301) is located at the output end of the lifting mechanism (307).

3. The lightweight ceramic filling device according to claim 2, characterized in that, The clamping mechanism (306) includes a positioning bracket (3061), and the vertical moving module (304) is used to drive the positioning bracket (3061) to rise and fall. A C-shaped plate (3062) is provided on both sides of the positioning bracket (3061). The openings of the two C-shaped plates (3062) are arranged opposite each other. The distance between the two C-shaped plates (3062) is sufficient to allow the printing screen (302) to slide and be inserted between the two C-shaped plates (3062) without falling off. The C-shaped plate (3062) is also provided with a fastening mechanism for fastening the printing screen (302).

4. A lightweight ceramic filling device according to claim 3, characterized in that, The fastening mechanism includes a locking bolt (3063) threaded onto the upper surface of the C-shaped plate (3062), the bottom of which is disc-shaped.

5. A lightweight ceramic filling device according to claim 3, characterized in that, The positioning bracket (3061) is mounted on the outer frame of the horizontal moving module (305).

6. A lightweight ceramic filling device according to claim 2, characterized in that, The lifting mechanism (307) is provided in two sets and the scraper (301) is provided in two sets. Each set of the lifting mechanism (307) is used to control the lifting of one of the scraper (301). Each scraper (301) is connected to a second negative pressure pipe (303).

7. A portable ceramic filling device according to claim 1, characterized in that, It also includes several sealing plates (4). The hollow box (1) has multiple combinations of countersunk openings and connecting openings of different specifications on its top. The sealing plates (4) are used to seal the connecting openings in areas where the substrate is not placed.

8. A portable ceramic filling device according to claim 1, characterized in that, The bottom surface inside the hollow box (1) has only one highest point and only one lowest point. The position of the highest point smoothly transitions to the position of the lowest point. A liquid outlet pipe (5) that can be opened and closed is connected to the position of the lowest point inside the hollow box (1).

9. A lightweight ceramic filling device according to claim 1, characterized in that, The hollow box (1) is provided with a number of cylindrical support columns (6) inside, and the top surface of each support column (6) is flush with the bottom surface of the recess.

Images