Spray valve

Abstract

The spray valve comprises a valve body, a firing pin, an air nozzle seat and a nozzle structure, the firing pin is arranged in the valve body in a penetrating mode, the nozzle structure is contained in the air nozzle seat and comprises a spray nozzle and a nozzle seat, the spray nozzle is arranged in the nozzle seat, and the air nozzle seat is arranged at the bottom of the valve body in a screwed mode. The nozzle structure can automatically shift in the tuyere seat so as to offset the manufacturing tolerance among all parts when the spray valve is assembled through the cooperation of an impact end of the firing pin and an alignment conical part of the spray nozzle and the gap formed between the tuyere seat and the nozzle seat, so that the nozzle structure can automatically shift in the tuyere seat so as to offset the manufacturing tolerance among all the parts when the spray valve is assembled, and the spray nozzle structure can automatically shift in the tuyere seat to offset the manufacturing tolerance among all the parts when the spray valve is assembled. The spray nozzle and the firing pin are in a concentric state automatically, so that a flow channel of the spray nozzle can be sealed indeed, and therefore, the convenience of assembly is improved, and the assembly time is shortened.

Description

Technical Field

[0001] This invention relates to a spray valve, particularly a spray valve connected to a dispensing device and used for supplying adhesives, and applied in the bonding and assembly process of semiconductors. Background Technology

[0002] A spray valve is a device for supplying colloids, especially for supplying liquid colloids with low viscosity. The spray valve is connected to dispensing equipment and used in the bonding and assembly process of semiconductors. It atomizes the colloid and sprays it onto the components, enabling the components to bond together.

[0003] The current spray valve includes a valve body, a firing pin and a spray nozzle. The valve body is connected to the dispensing equipment and has a glue storage channel. The spray nozzle is locked at the bottom of the valve body and has a mating groove and a glue outlet channel. The glue outlet channel extends downward from the mating groove. The firing pin passes through the glue storage channel of the valve body and can contact the mating groove of the spray nozzle.

[0004] When dispensing, the ejector pin moves upward away from the spray nozzle, and then the dispensing device supplies the adhesive to the adhesive storage channel of the valve body. The ejector pin then moves downward to squeeze the adhesive out of the dispensing channel of the spray nozzle. When dispensing stops, the ejector pin abuts against the mating groove of the spray nozzle to close the dispensing channel, thus preventing the adhesive from flowing out of the dispensing channel.

[0005] However, the spray nozzle is directly threaded to the bottom of the valve body. To facilitate locking, a certain margin is left between the threads of the spray nozzle and the threads on the valve body. Therefore, when the spray nozzle is rotated and locked to the valve body, the spray nozzle may deviate in any direction. Furthermore, due to the inevitable machining errors during the manufacturing of the valve body, the striker, and the spray nozzle, the mating grooves of the striker and the spray nozzle may not be completely concentric. This will cause the striker to be unable to fully abut against the mating groove, resulting in a gap and the dispensing channel not being completely sealed, allowing the adhesive to flow out from the dispensing channel.

[0006] Therefore, in order to avoid the aforementioned situation, when the spray nozzle is rotated and locked to the valve body, the operator needs to repeatedly rotate and adjust the spray nozzle to ensure that the firing pin and the mating groove of the spray nozzle are indeed concentric when the assembly is completed. This makes the assembly of the spray valve inconvenient and time-consuming. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to improve the current spray valve's striking pin and spray nozzle, which are difficult to adjust to be concentric, thus requiring more time and causing inconvenience during assembly.

[0008] The technical solution of the present invention is as follows: To achieve the aforementioned objective, the spray valve of the present invention comprises:

[0009] A valve body having an outlet at its bottom, the outlet having threads formed around its periphery;

[0010] A striking pin is linearly movable within the valve body, and the bottom end of the striking pin has an impact end that is conical.

[0011] A nozzle seat, wherein a connecting portion and a positioning groove are formed inside the nozzle seat, the connecting portion is screwed onto the outlet of the valve body, and the impact end of the firing pin faces the positioning groove; and

[0012] A nozzle structure includes a nozzle seat and a spray nozzle. The spray nozzle is slidably fitted into the nozzle seat and forms an airflow gap with the nozzle seat. The spray nozzle has a flow channel extending through it. One end of the spray nozzle has a pair of aligning cones that communicate with the flow channel. The nozzle seat is movably accommodated in the positioning groove, and the outer periphery of the nozzle seat is spaced apart from the inner wall of the positioning groove of the nozzle seat. The aligning cones correspond to and can contact the impact end of the firing pin.

[0013] This invention relates to a spray valve for connecting to a dispensing device and for use in the bonding and assembly process of semiconductor and electronic components. When assembling the spray valve, the nozzle seat and spray nozzle of the nozzle structure are first combined. Then, the nozzle structure is housed in the positioning groove of the nozzle seat. Finally, the nozzle seat and the nozzle structure are jointly mounted on the valve body, thus completing the assembly. During dispensing, the dispensing device supplies adhesive to the interior of the valve body and pushes the adhesive into the flow channel of the spray nozzle through the ejector pin. The spray valve delivers gas through the airflow gap between the spray nozzle and the nozzle seat of the nozzle structure, atomizing the adhesive sprayed from the flow channel of the spray nozzle.

[0014] Because there is a gap between the outer periphery of the nozzle seat and the inner wall of the positioning groove of the air nozzle seat, the nozzle structure can move in the positioning groove of the air nozzle seat. The aligning cone of the spray nozzle and the impact end of the impact pin are both conical and correspondingly matched. Therefore, when the joint of the air nozzle seat is screwed into the outlet of the valve body, the nozzle structure can move slightly in the air nozzle seat and be positioned by the impact pin and the aligning cone. Thus, the manufacturing tolerances between the components can be automatically offset. Moreover, the nozzle seat and the spray nozzle of the nozzle structure are joined by a sliding fit and do not need to be locked. After the assembly is completed, the aligning cone of the spray nozzle and the impact end of the impact pin are concentric, which can prevent low viscosity liquid glue from flowing out of the flow channel of the spray nozzle when the glue supply stops.

[0015] Therefore, by the cooperation between the striking pin and the aligning cone of the spray nozzle, and by the gap formed between the air nozzle seat and the nozzle seat, it can be ensured that the spray nozzle and the striking pin are concentric after the spray valve is assembled. Therefore, there is no need to repeatedly adjust during assembly, which improves the convenience of assembly. Even if the concentricity of the striking pin and the nozzle structure is different during manufacturing, the striking pin and the spray nozzle can still be made concentric after assembly, thus reducing the requirements for manufacturing precision and reducing costs. Attached Figure Description

[0016] Figure 1 This is a partial perspective view of a preferred embodiment of the spray valve of the present invention.

[0017] Figure 2 This is a partially exploded schematic diagram of the spray valve of the present invention.

[0018] Figure 3 This is a partial cross-sectional schematic diagram of the spray valve of the present invention.

[0019] Figure 4 This is a partially enlarged cross-sectional schematic diagram of the spray valve of the present invention.

[0020] Figure 5 This is an exploded view of the nozzle structure of the spray valve of the present invention.

[0021] Figure 6 This is a top plan view of the nozzle structure of the spray valve of the present invention.

[0022] Figure 7 for Figure 6 A schematic diagram of the AA cross-section. Detailed Implementation

[0023] The following, in conjunction with the accompanying drawings and preferred embodiments of the present invention, further illustrates the technical means employed by the present invention to achieve its intended purpose.

[0024] Please see Figures 1 to 3 This is a preferred embodiment of the spray valve of the present invention, which includes a valve body 10, a striking pin 20, a nozzle seat 30 and a nozzle structure 40.

[0025] like Figure 2 As shown, the bottom of the valve body 10 has an outlet portion 11, and the periphery of the outlet portion 11 is formed with threads.

[0026] like Figure 2 and Figure 3 As shown, the striker 20 is linearly movable in the valve body 10, and the bottom end of the striker 20 has an impact end 21, which is conical.

[0027] like Figure 2 and Figure 3 As shown, the nozzle seat 30 has a connecting part 31 and a positioning groove 32 inside. The connecting part 31 is screwed onto the outlet part 11 of the valve body 10, and the impact end 21 of the striker 20 faces the positioning groove 32.

[0028] like Figures 3 to 5 As shown, the nozzle structure 40 includes a nozzle seat 41 and a spray nozzle 42. The spray nozzle 42 is slidably engaged in the nozzle seat 41, and an airflow gap is formed between the spray nozzle 42 and the nozzle seat 41. The spray nozzle 42 has a flow channel 421 that passes through the spray nozzle 42. One end of the spray nozzle 42 has a pair of aligning cones 422 that communicate with the flow channel 421. The nozzle seat 41 is movably accommodated in the positioning groove 32, and the periphery of the nozzle seat 41 and the inner wall 321 of the positioning groove 32 of the nozzle seat 30 are spaced apart. The aligning cones 422 correspond to and can contact the impact end 21 of the impact pin 20. The aligning cones 422 of the spray nozzle 42 are conical grooves, and the impact end 21 of the impact pin 20 is conical. The taper of the aligning cones 422 corresponds to that of the impact end 21, and their contours are matched.

[0029] The spray valve of the present invention is used to connect a dispensing device and is applied in the bonding and assembly process of semiconductor and electronic components. When assembling the spray valve, the nozzle seat 41 and the spray nozzle 42 of the nozzle structure 40 are first combined.

[0030] Among them, such as Figures 5 to 7 As shown, the spray nozzle 42 has an outer ring wall 423, and a mating groove 411 is formed inside the nozzle seat 41. The diameter of the outer ring wall 423 corresponds to the inner diameter of the mating groove 411, so that the spray nozzle 42 is slidably engaged in the mating groove 411 by means of the outer ring wall 423.

[0031] Next, as Figure 3 and Figure 4 As shown, the nozzle structure 40 is housed in the positioning groove 32 of the nozzle seat 30. Since there is a gap between the outer periphery of the nozzle seat 41 and the inner wall 321 of the positioning groove 32 of the nozzle seat 30, the nozzle structure 40 can move slightly back and forth and left and right in the nozzle seat 30. Then, the nozzle seat 30 is screwed onto the outlet 11 of the valve body 10 by the connecting part 31 of the nozzle seat 30. At this time, the nozzle seat 30 abuts against the nozzle seat 41, so that the spray nozzle 42 is abutted and limited by the nozzle seat 41 and the valve body 10 respectively. Thus, the nozzle seat 30 and the nozzle structure 40 can be set together in the valve body 10, and the assembly is completed.

[0032] During the dispensing operation, the dispensing equipment supplies the adhesive into the interior of the valve body 10 and pushes the adhesive into the flow channel 421 of the spray nozzle 42 through the impact pin 20. The spray valve delivers gas through the airflow gap between the spray nozzle 42 and the nozzle seat 41 of the nozzle structure 40, so that the adhesive sprayed from the flow channel 421 of the spray nozzle 42 is atomized.

[0033] Among them, such as Figures 3 to 6 As shown, the nozzle seat 41 has an air duct structure 412 and an air jet pipe 413. The airflow gap can be formed by the air duct structure 412 and the air jet pipe 413. The air duct structure 412 is located at the top of the nozzle seat 41 and is connected to the mating groove 411. The air jet pipe 413 passes through the nozzle seat 41 vertically and is connected to the air duct structure 412. The outer ring wall 423 of the spray nozzle 42 is adjacent to the air duct structure 412. The spray nozzle 42 has a spray end 424. The spray end 424 passes through the air duct structure 412 and the air jet pipe 413 in sequence, so that the air jet pipe 413 surrounds the periphery of the spray end 424. The spray valve delivers air to the spray end 424 of the spray nozzle 42 through the air duct structure 412 and the air jet pipe 413, so that the colloid passing through the spray nozzle 42 is atomized.

[0034] When assembling the spray valve, as follows Figures 4 to 6 As shown, the distance between the nozzle seat 41 and the positioning groove 32 of the nozzle seat 30 allows the nozzle structure 40 to move within the positioning groove 32. Furthermore, the aligning cone 422 of the spray nozzle 42 and the impact end 21 of the impact pin 20 are conical and have correspondingly matching contours. Therefore, during the rotational screwing of the nozzle seat 30's connecting portion 31 into the outlet portion 11 of the valve body 10, the nozzle structure 40 can automatically shift within the nozzle seat 30 and offset the gaps between the components due to the conical positioning of the impact pin 20 and the aligning cone 422. The manufacturing tolerances are such that the nozzle seat 41 and the spray nozzle 42 of the nozzle structure 40 are joined by a sliding fit without locking, so that the alignment cone 422 of the spray nozzle 42 and the impact end 21 of the impact pin 20 remain concentric during the assembly process and remain concentric after the spray valve is assembled. In this way, when the impact end 21 of the impact pin 20 abuts against the alignment cone 422 of the spray nozzle 42, the flow channel 421 of the spray nozzle 42 can be reliably sealed, ensuring that the adhesive will not flow out of the flow channel 421 when the adhesive supply stops.

[0035] Therefore, by the cooperation between the impact pin 20 and the alignment cone 422 of the spray nozzle 42, and by the gap formed between the nozzle seat 30 and the nozzle seat 41, it can be ensured that the spray nozzle 42 and the impact pin 20 are automatically concentric after the spray valve is assembled. Therefore, there is no need to repeatedly adjust during assembly, which can improve the convenience of assembly. Even if the concentricity of the impact pin 20 and the nozzle structure 40 is different during manufacturing, the flow channel 421 and the spray end 424 of the impact pin 20 and the spray nozzle 42 can still be concentric after assembly. Therefore, the requirements for manufacturing precision can be reduced, thereby reducing costs.

[0036] In summary, the spray valve of the present invention is used to spray atomized colloids, especially liquid colloids with low viscosity. Through the cooperation between the impact pin 20 and the aligning cone 422 of the spray nozzle 42, and by the gap formed between the air nozzle seat 30 and the nozzle seat 41, the nozzle structure 40 can automatically offset within the air nozzle seat 30 during the assembly of the spray valve to offset manufacturing tolerances between components. Therefore, when the spray valve is assembled, the spray nozzle 42 and the impact pin 20 are automatically concentric, allowing the impact pin 20 to reliably abut against the aligning cone 422 of the spray nozzle 42 to close the flow channel 421 of the spray nozzle 42, thereby improving assembly convenience and reducing assembly time.

[0037] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A spray valve, characterized in that, The spray valve includes: A valve body having an outlet at its bottom, the outlet having threads formed around its periphery; A striking pin is linearly movable within the valve body, and the bottom end of the striking pin has an impact end that is conical. A nozzle seat, wherein a connecting portion and a positioning groove are formed inside the nozzle seat, the connecting portion is screwed onto the outlet of the valve body, and the impact end of the firing pin faces the positioning groove; and A nozzle structure includes a nozzle seat and a spray nozzle. The spray nozzle is slidably fitted into the nozzle seat and forms an airflow gap with the nozzle seat. The spray nozzle has a flow channel extending through it. One end of the spray nozzle has a pair of aligning cones that communicate with the flow channel. The nozzle seat is movably accommodated in the positioning groove, and the outer periphery of the nozzle seat is spaced apart from the inner wall of the positioning groove of the nozzle seat. The aligning cones correspond to and can contact the impact end of the firing pin.

2. The spray valve according to claim 1, characterized in that, When the nozzle seat is screwed into the outlet of the valve body, the nozzle seat abuts against the nozzle seat, so that the spray nozzle is limited by the nozzle seat and the valve body respectively.

3. The spray valve according to claim 1, characterized in that, The spray nozzle has an outer ring wall, and a mating groove is formed inside the nozzle seat. The diameter of the outer ring wall corresponds to the inner diameter of the mating groove, so that the spray nozzle is slidably engaged in the mating groove by means of the outer ring wall.

4. The spray valve according to claim 2, characterized in that, The spray nozzle has an outer ring wall, and a mating groove is formed inside the nozzle seat. The diameter of the outer ring wall corresponds to the inner diameter of the mating groove, so that the spray nozzle is slidably engaged in the mating groove by means of the outer ring wall.

5. The spray valve according to any one of claims 1 to 4, characterized in that, The nozzle holder has an air jet channel that runs vertically through the nozzle holder, and the spray nozzle has a spray end that passes through the air jet channel and surrounds the periphery of the spray end.

6. The spray valve according to claim 1 or 2, characterized in that, The nozzle holder has an air duct structure located at the top of the nozzle holder and connecting the top and bottom of the nozzle holder. The spray nozzle has a spray end that passes through the air duct structure.

7. The spray valve according to claim 3 or 4, characterized in that, The nozzle seat has an air duct structure located at the top of the nozzle seat and connecting the top and bottom of the nozzle seat. The air duct structure is connected to the mating groove. The outer ring wall of the spray nozzle is adjacent to the air duct structure. The spray nozzle has a spray end that passes through the air duct structure.

8. The spray valve according to claim 5, characterized in that, The nozzle holder has an air duct structure located at the top of the nozzle holder and connected to the jet pipe, with the spray end passing through the air duct structure and the jet pipe in sequence.

9. The spray valve according to any one of claims 1 to 4, characterized in that, The nozzle has a conical conical part with a conical groove, and the impact end of the firing pin is conical. The conical part and the impact end have a corresponding taper.

10. The spray valve according to claim 8, characterized in that, The nozzle has a conical conical part with a conical groove, and the impact end of the firing pin is conical. The conical part and the impact end have a corresponding taper.

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