Rapid and uniform dispensing device for PCB processing

Abstract

The utility model relates to PCB board processing technical field especially relates to a kind of for the quick and even point gum device of PCB board processing.The technical scheme of it includes: external point gum machine glue spraying pipe head, still includes glue cutting mechanism, the glue cutting mechanism is movably installed on external point gum machine glue spraying pipe head;Buffer reset mechanism, the buffer reset mechanism is movably installed on external point gum machine glue spraying pipe head, and located the top of glue cutting mechanism, the glue cutting mechanism is movably connected with buffer reset mechanism.The utility model passes through the up-and-down movement action of external point gum machine glue spraying pipe head, cooperate glue cutting mechanism and buffer reset mechanism gradually cut off the glue of wire drawing, avoid that glue is stained to PVB board other position, cause the problem that glue is not uniform and PVB board panel face is contaminated in glue spraying place, close external point gum machine glue spraying pipe head simultaneously, avoid that glue is in contact with external air for a long time, cause glue solidification, influence next time glue spraying.

Description

Technical Field

[0001] This utility model relates to the field of PCB board processing technology, and in particular to a fast and uniform dispensing device for PCB board processing. Background Technology

[0002] The PCB manufacturing process includes an adhesive dispensing step, which mainly utilizes a robotic arm and dispensing machine to spray adhesive onto designated areas of the PCB surface, facilitating subsequent processing and packaging. When dispensing adhesive onto the PCB, it is crucial to ensure the adhesive is sprayed evenly. Uneven adhesive can easily overflow onto other parts of the board, contaminating the surface, affecting the dispensing of other areas, and also compromising the adhesion between the adhesive and other components.

[0003] Traditional PCB manufacturing fast and uniform dispensing devices cannot close the dispensing nozzle in time, which can easily lead to stringing when the dispensing volume is large. This not only causes uneven glue application but also causes glue to contaminate other areas of the PCB. Summary of the Invention

[0004] The purpose of this invention is to address the problem in the prior art where the glue spray nozzle cannot be sealed in time, which leads to stringing when the glue output is large. This not only causes uneven glue application but also causes glue to contaminate other areas of the PCB board. The invention proposes a fast and uniform glue dispensing device for PCB board processing.

[0005] The technical solution of this utility model is as follows: a fast and uniform dispensing device for PCB board processing, including an external dispensing machine spray nozzle, and an adhesive cutting mechanism, wherein the adhesive cutting mechanism is movably installed on the external dispensing machine spray nozzle; a buffer reset mechanism, wherein the buffer reset mechanism is movably installed on the external dispensing machine spray nozzle and located above the adhesive cutting mechanism, wherein the adhesive cutting mechanism is movably connected to the buffer reset mechanism; and a support block, wherein the support block is fixedly connected to the bottom of the adhesive cutting mechanism.

[0006] Preferably, the glue cutting mechanism includes a second sleeve ring, which is sleeved on the glue spray tube head of an external dispensing machine. Two mutually compatible cutting pieces are hinged to the lower surface of the second sleeve ring near the center. Two symmetrical support blocks are fixedly connected to the lower surface of the second sleeve ring near the outer side. Spring wires are fixedly connected between the two cutting pieces and the corresponding support blocks.

[0007] Preferably, the buffer reset mechanism includes a first collar, which is sleeved and fixed to the glue spray tube head of an external dispensing machine. A connecting shaft is fixedly connected to the lower surface of the first collar, and a connecting sleeve is inserted into the bottom end of the connecting shaft. The bottom end of the connecting sleeve is fixedly connected to the top of a second collar, and a spring is fixedly connected to the bottom of the inner wall of the connecting sleeve and the bottom end of the connecting shaft.

[0008] Preferably, each of the two truncated pieces has a matching magnetic strip fixedly connected to one side of its opposite side, and the two magnetic strips are fitted together.

[0009] Preferably, the bottom of the second ring is provided with an annular groove, and an annular heating box is embedded in the annular groove. The lower surface of the annular heating box is provided with multiple through holes, and the multiple through holes are arranged in an annular array. The annular heating box is provided with a heating wire, and the heating wire is connected to an external controller. The bottom of the connecting sleeve and the top of the annular heating box are connected by a connecting pipe.

[0010] Preferably, the inner wall of the second ring is fixedly connected with a plurality of limiting blocks, and the outer wall of the glue spray nozzle of the external dispensing machine is provided with a limiting groove that matches the limiting blocks, and the limiting blocks are slidably connected in the limiting groove.

[0011] Preferably, a rubber pad for protecting the PCB board is fixedly connected to the bottom end of the support block.

[0012] Preferably, both of the cut pieces are semi-circular and are adapted to the bottom end of the glue spray nozzle of the external dispensing machine.

[0013] Compared with the prior art, the present invention has the following beneficial technical effects:

[0014] This invention utilizes the up-and-down movement of the glue spray nozzle of an external dispensing machine, combined with a glue cutting mechanism and a buffer reset mechanism, to gradually cut off the stringy glue, preventing the glue from contaminating other parts of the PVB board and causing uneven glue application and PVB board surface contamination. At the same time, it closes the glue spray nozzle of the external dispensing machine to prevent the glue from being in contact with the outside air for a long time, causing the glue to solidify and affecting the next glue application.

[0015] Furthermore, compressed air is used to heat the air after it flows through the heating wire, and finally, the air is blown to preheat the designated glue spraying points on the PCB board, which improves the glue spraying effect and makes the glue more even on the PCB board. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of this utility model is provided;

[0017] Figure 2 A schematic diagram of the adhesive cutting mechanism and buffer reset mechanism of this utility model is provided;

[0018] Figure 3 A cross-sectional view of the structure at the second ring of this utility model is provided;

[0019] Figure 4 A cross-sectional view of the connecting shaft and connecting sleeve of this utility model is provided;

[0020] Figure 5 A bottom view of the structure of the second ring of this utility model is provided.

[0021] Reference numerals in the attached drawings: 1. Adhesive cutting mechanism; 2. Buffer reset mechanism; 3. Cutting piece; 4. Spring wire; 5. Connecting shaft; 6. Connecting sleeve; 7. Limiting block; 8. Annular heating box; 9. Connecting tube; 10. Spring; 11. Magnetic strip; 12. First collar; 13. Second collar; 14. Support block. Detailed Implementation

[0022] 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.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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.

[0025] like Figures 1-5As shown, the fast and uniform dispensing device for PCB board processing proposed in this utility model includes an external dispensing machine spray nozzle.

[0026] In this embodiment, the fast and uniform dispensing device for PCB board processing further includes an adhesive cutting mechanism 1, which is movably mounted on the spray nozzle of an external dispensing machine; a buffer reset mechanism 2, which is movably mounted on the spray nozzle of an external dispensing machine and located above the adhesive cutting mechanism 1, and the adhesive cutting mechanism 1 and the buffer reset mechanism 2 are movably connected; and a support block 14, which is fixedly connected to the bottom of the adhesive cutting mechanism 1.

[0027] Furthermore, the glue cutting mechanism 1 includes a second sleeve ring 13, which is fitted onto the glue spray nozzle of the external dispensing machine. Two mutually compatible cutting pieces 3 are hinged to the lower surface of the second sleeve ring 13 near its center. Two symmetrical support blocks 14 are fixedly connected to the lower surface of the second sleeve ring 13 near its outer side. A spring wire 4 is fixedly connected between the two cutting pieces 3 and their corresponding support blocks 14. With this configuration, when the glue spray nozzle of the external dispensing machine moves downwards to spray glue, the two support blocks 14 will first contact the PCB board and fix the PVB board, preventing the PCB board from moving and thus improving the accuracy of glue spraying. During the continuous movement of the dispensing nozzle, the external dispensing machine's nozzle support block 14 pushes the two cutting pieces 3 closer to the PCB board's dispensing area. At this time, the two cutting pieces 3 are gradually pushed completely away. During the above process, the spring wire 4 is squeezed and undergoes compression deformation. After the dispensing is completed, the two compressed spring wires 4 will push the two cutting pieces 3 to reset. During this process, the two cutting pieces 3 will gradually cut off the stringy glue, preventing the glue from contaminating other parts of the PVB board, causing uneven glue application and PVB board surface contamination. At the same time, the external dispensing machine's nozzle is closed to prevent the glue from being in contact with the outside air for a long time, causing the glue to solidify and affecting the next dispensing.

[0028] Furthermore, the buffer reset mechanism 2 includes a first sleeve 12, which is sleeved and fixed to the spray nozzle of an external dispensing machine. A connecting shaft 5 is fixedly connected to the lower surface of the first sleeve 12, and a connecting sleeve 6 is inserted into the bottom end of the connecting shaft 5. The bottom end of the connecting sleeve 6 is fixedly connected to the top of the second sleeve 13. A spring 10 is fixedly connected to the bottom of the inner wall of the connecting sleeve 6 and the bottom end of the connecting shaft 5. With the above settings, during the upward movement of the second sleeve 13, the position between the spring wire 4 and the spray nozzle of the external dispensing machine remains unchanged, while the connecting shaft 5 gradually enters the connecting sleeve 6 and squeezes the spring 10, thereby achieving a buffering effect on the movement of the second sleeve 13 and also assisting in the reset of the second sleeve 13.

[0029] In addition, each of the two cut pieces 3 is fixedly connected to a matching magnetic strip 11 on its opposite side. The two magnetic strips 11 are attached together. By setting the magnetic strips 11 on the two cut pieces 3, the spring wire 4 can be assisted in resetting the cut pieces 3, ensuring that the two cut pieces 3 can completely seal the glue spray nozzle of the external dispensing machine.

[0030] The second ring 13 has an annular groove at its bottom, and an annular heating box 8 is embedded in the groove. The lower surface of the annular heating box 8 has multiple through holes arranged in a ring array. The annular heating box 8 contains a heating wire connected to an external controller. A connecting pipe 9 is connected between the bottom of the connecting sleeve 6 and the top of the annular heating box 8. With the above configuration, when the second ring 13 is pushed upward, it will first drive the connecting sleeve 6 to move upward. At this time, the bottom end of the connecting shaft 5 will gradually approach the bottom of the connecting sleeve 6 and squeeze the spring 10, causing the spring 10 to compress and deform. The air in the connecting sleeve 6 will be compressed and enter the annular heating box 8 through the connecting pipe 9. After being heated by the heating wire in the annular heating box 8, it will be blown out from the multiple through holes along with the hot air in the annular heating box 8, preheating the designated glue spraying points on the PCB board, improving the glue spraying effect, and making the glue more uniform on the PCB board.

[0031] In addition, multiple limiting blocks 7 are fixedly connected to the inner wall of the second ring 13. The outer wall of the glue spray nozzle of the external dispensing machine is provided with a limiting groove that matches the limiting block 7, and the limiting block 7 is slidably connected in the limiting groove. By setting the limiting groove and the limiting block 7, the movement of the second ring 13 can be limited, thereby improving the stability of the movement of the related structure.

[0032] The bottom of the support block 14 is fixedly connected with a rubber pad for protecting the PCB board. By setting the rubber pad, the surface of the PCB board can be prevented from being damaged under the pressure when the support block 14 comes into contact with the PCB board surface.

[0033] Both cut-off pieces 3 are semi-circular and are adapted to the bottom end of the spray nozzle of the external dispensing machine. With this setting, when the two cut-off pieces 3 are closed, they can fit against the bottom end of the spray nozzle of the external dispensing machine, cut off the stringy glue, and seal the nozzle, preventing foreign objects from directly contacting the glue at the bottom of the nozzle, reducing the risk of glue contamination, and extending the glue hardening time.

[0034] Working principle: When the external dispensing machine's spray nozzle moves downwards to spray glue, the two support blocks 14 first contact the PCB board and fix the PVB board to prevent the PCB board from moving, thereby improving the accuracy of glue spraying. As the external dispensing machine's spray nozzle continues to move, the support blocks 14 push the two cutting pieces 3 closer to the PCB board's glue spraying area. At this time, the two cutting pieces 3 are gradually pushed open completely. During the above process, the spring wire 4 is squeezed and deformed. After the glue dispensing is completed, the two deformed spring wires 4 will push the two cutting pieces 3 to reset. During this process, the two cutting pieces 3 will gradually cut off the stringy glue, preventing the glue from contaminating other parts of the PVB board, causing uneven glue application and PVB board surface contamination. At the same time, the external dispensing machine's spray nozzle is closed to prevent the glue from being in contact with the outside air for a long time, causing the glue to solidify and affecting the next glue spraying.

[0035] During the upward movement of the second collar 13, the position between the spring wire 4 and the glue spray nozzle of the external dispensing machine remains unchanged, while the connecting shaft 5 gradually enters the connecting sleeve 6 and squeezes the spring 10, thereby achieving a buffering effect on the movement of the second collar 13 and also assisting the second collar 13 in resetting.

[0036] Furthermore, when the second sleeve 13 is pushed upward, it will first drive the connecting sleeve 6 to move upward. At this time, the bottom end of the connecting shaft 5 will gradually approach the bottom of the connecting sleeve 6 and squeeze the spring 10, causing the spring 10 to undergo compression deformation. The air inside the connecting sleeve 6 will be compressed and enter the annular heating box 8 through the connecting pipe 9. After being heated by the heating wire inside the annular heating box 8, it will be blown out from multiple through holes along with the hot air inside the annular heating box 8, preheating the designated glue spraying points on the PCB board, improving the glue spraying effect, and making the glue more uniform on the PCB board.

[0037] The above specific embodiments are merely several optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A rapid and uniform dispensing device for PCB board processing, comprising an external dispensing machine nozzle, characterized in that, Also includes: Adhesive cutting mechanism (1), wherein the adhesive cutting mechanism (1) is movably installed on the spray nozzle of the external dispensing machine; The buffer reset mechanism (2) is movably installed on the glue spray tube head of the external dispensing machine and located above the glue cutting mechanism (1). The glue cutting mechanism (1) is movably connected to the buffer reset mechanism (2). Support block (14), which is fixedly connected to the bottom of glue cutting mechanism (1).

2. The rapid and uniform dispensing device for PCB board processing according to claim 1, characterized in that, The glue cutting mechanism (1) includes a second collar (13), which is sleeved on the glue spray tube head of an external dispensing machine. Two mutually compatible cutting pieces (3) are hinged on the lower surface of the second collar (13) near the center. Two symmetrical support blocks (14) are fixedly connected on the lower surface of the second collar (13) near the outer side. Spring wires (4) are fixedly connected between the two cutting pieces (3) and the corresponding support blocks (14).

3. The rapid and uniform dispensing device for PCB board processing according to claim 1, characterized in that, The buffer reset mechanism (2) includes a first collar (12), which is sleeved and fixed on the spray nozzle of an external dispensing machine. A connecting shaft (5) is fixedly connected to the lower surface of the first collar (12). A connecting sleeve (6) is inserted into the bottom end of the connecting shaft (5). The bottom end of the connecting sleeve (6) is fixedly connected to the top of the second collar (13). A spring (10) is fixedly connected to the bottom of the inner wall of the connecting sleeve (6) and the bottom end of the connecting shaft (5).

4. The rapid and uniform dispensing device for PCB board processing according to claim 2, characterized in that, Each of the two cut pieces (3) has a matching magnetic strip (11) fixedly connected to one side of the opposite side, and the two magnetic strips (11) are attached together.

5. The rapid and uniform dispensing device for PCB board processing according to claim 3, characterized in that, The bottom of the second ring (13) is provided with an annular groove, and an annular heating box (8) is embedded in the annular groove. The lower surface of the annular heating box (8) is provided with multiple through holes, and the multiple through holes are arranged in an annular array. The annular heating box (8) is provided with an electric heating wire, and the electric heating wire is connected to an external controller. The bottom of the connecting sleeve (6) and the top of the annular heating box (8) are connected by a connecting pipe (9).

6. The rapid and uniform dispensing device for PCB board processing according to claim 2, characterized in that, The inner wall of the second ring (13) is fixedly connected with multiple limiting blocks (7). The outer wall of the glue spray nozzle of the external dispensing machine is provided with a limiting groove that matches the limiting block (7), and the limiting block (7) is slidably connected in the limiting groove.

7. The rapid and uniform dispensing device for PCB board processing according to claim 2, characterized in that, The bottom end of the support block (14) is fixedly connected with a rubber pad for protecting the PCB board.

8. The rapid and uniform dispensing device for PCB board processing according to claim 2, characterized in that, Both of the cut pieces (3) are semi-circular and are adapted to the bottom end of the glue spray nozzle of the external dispensing machine.

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