Nozzle components for a spray nozzle and a method for assembling them in the correct position.

Abstract

The objective is to provide a nozzle component for a spray nozzle that ensures high concentricity during assembly and allows for uniform application of adhesive, and a method for assembling the nozzle component of the spray nozzle in the correct position. [Solution] A nozzle component for a spray nozzle, comprising a liquid nozzle and an air nozzle, wherein the liquid nozzle has a positioning portion, the positioning portion having an outer tapered surface, and the air nozzle has an internal positioning recess, the positioning recess having a tapered shape in which the diameter gradually narrows from the top to the bottom, forming an inner tapered surface, the positioning portion of the liquid nozzle is positioned within the positioning recess of the air nozzle, and the angle of the inner tapered surface and the taper angle of the outer tapered surface are in a corresponding relationship.

Description

Technical Field

[0001] The present invention relates to a spray nozzle for atomizing an adhesive, and particularly to a nozzle component of the spray nozzle and a method for assembling the nozzle component of the spray nozzle at an accurate position.

Background Art

[0002] A spray nozzle is a device for supplying an adhesive, and is particularly used when supplying a liquid adhesive with a low viscosity. This spray nozzle is connected to a dispensing device and has a function of atomizing the adhesive and spraying it onto the parts to be adhered to adhere the parts together. It is mainly used in the adhesion and assembly processes of semiconductors.

[0003] FIG. 7 shows a conventional spray nozzle. The nozzle component of the spray nozzle includes a liquid nozzle 51, an adapter member 52, an air nozzle 53, and a mounting member 54. The liquid nozzle 51 includes a liquid nozzle flange portion 511, a barrel portion 512, and a flow path 513. The barrel portion 512 extends downward from the bottom surface of the liquid nozzle flange portion 511, and the flow path 513 penetrates from the top surface of the liquid nozzle flange portion 511 to the bottom end of the barrel portion 513. The adapter member 52 is sleeved on the liquid nozzle flange portion 511 of the liquid nozzle 51 and attached to the upper half of the barrel portion 512 to support the liquid nozzle 51. On the other hand, the air nozzle 53 is coupled to the adapter member 52 through a fastening structure and surrounds the lower half 512 of the barrel portion 513 of the liquid nozzle 51. The mounting member 54 holds the adapter member 52 so as to surround it and is combined with the valve mechanism 61 of the spray nozzle through a fastening structure.

[0004] As shown in Figure 8, however, in order to facilitate fastening, the fastening structure between the air nozzle 53 and the adapter member 52, and the fastening structure between the mounting member 54 and the valve mechanism 61 are given a small gap as play. Due to this gap, the liquid nozzle 51 tilts slightly each time the fastening operation is performed, and as a result, the liquid nozzle 51 and the air nozzle 53 cannot be assembled concentrically. This decrease in concentricity causes the spray angle of the liquid nozzle 51 to become uneven, which leads to uneven spraying of the adhesive, and there was a risk that a large amount of adhesive would be applied to one side of the object 62 to which the adhesive is to be applied, while only a small amount would be applied to the other side. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Chinese Utility Model Application Publication No. CN201402799Y Specification [Overview of the project] [Problems that the invention aims to solve]

[0006] The present invention has been made in view of the shortcomings of the prior art, and aims to provide a nozzle component for a spray nozzle that ensures high concentricity when assembling a liquid nozzle and an air nozzle, and that allows for uniform application of adhesive, and a method for assembling the nozzle component of the spray nozzle in the correct position. [Means for solving the problem]

[0007] To achieve the above objective, the present invention proposes a nozzle component for a spray nozzle, which includes a liquid nozzle and an air nozzle. The liquid nozzle comprises a liquid nozzle flange, a positioning portion, a spray port, and a flow path. The positioning portion is formed to extend downward from the bottom surface of the liquid nozzle flange, has a tapered shape in which the outer diameter gradually narrows from top to bottom, and has a tapered surface. The spray port is formed to extend further downward from the lower end of the positioning portion. The flow path penetrates the liquid nozzle flange, the positioning portion, and the spray port. The air nozzle is installed so as to cover the outside of the liquid nozzle and comprises an air nozzle body and an air nozzle flange. A positioning recess and a nozzle housing recess are formed inside the air nozzle body, the positioning recess is formed to be recessed in the top of the air nozzle body, and has a tapered shape in which the diameter of the opening gradually narrows from the top to the bottom of the air nozzle body, forming a tapered space, the air nozzle body has an inner conical surface surrounding the tapered space, the positioning part of the liquid nozzle is positioned in the positioning recess, the taper angle of the inner conical surface and the taper angle of the tapered surface of the positioning part of the liquid nozzle are in a corresponding relationship, the nozzle housing recess is formed to penetrate between the positioning recess and the bottom of the air nozzle body, and the spray port of the liquid nozzle is positioned in the nozzle housing recess. The air nozzle flange is provided at the top of the air nozzle body and is arranged to surround the liquid nozzle flange. Here, the taper angle of the tapered surface portion of the positioning portion of the liquid nozzle is equal to or slightly larger than the taper angle of the inner conical surface of the air nozzle body of the air nozzle, and the difference between the taper angle of the tapered surface portion and the taper angle of the inner conical surface is 1 degree or less.

[0008] To achieve the above objective, the present invention further proposes a method for assembling nozzle components of a spray nozzle into precise positions, the assembly method comprising the steps of preparing a liquid nozzle, preparing an air nozzle, and incorporating the liquid nozzle into the air nozzle. In the step of preparing the liquid nozzle, the liquid nozzle comprises a liquid nozzle flange, a positioning portion formed to extend downward from the bottom surface of the liquid nozzle flange, a spray port formed to extend further downward from the lower end of the positioning portion, and a flow path that penetrates the liquid nozzle flange, the positioning portion, and the spray port, wherein the positioning portion has a tapered shape in which the outer diameter gradually narrows from the top to the bottom and has a tapered surface portion. In the step of preparing the air nozzle, the air nozzle comprises an air nozzle body having a positioning recess and a nozzle housing recess inside, and an air nozzle flange formed at its top, the positioning recess is formed to be recessed in the top of the air nozzle body and has a tapered shape in which the diameter of the opening gradually narrows from the top to the bottom of the air nozzle body, forming a tapered space, the air nozzle body has an inner conical surface surrounding the tapered space, the tapered surface portion of the liquid nozzle positioning portion has a taper angle equal to or slightly larger than the inner conical surface of the air nozzle body, and the difference between the taper angle of the tapered surface portion and the taper angle of the inner conical surface is 1 degree or less. The step of assembling the liquid nozzle into the air nozzle is characterized in that the positioning portion of the liquid nozzle is placed in the positioning recess of the air nozzle, the inner circumferential conical surface and the tapered surface portion are brought into close contact with each other, the spray port of the liquid nozzle is placed in the nozzle housing recess of the air nozzle, and the liquid nozzle flange portion of the liquid nozzle is fitted into the air nozzle flange portion of the air nozzle. [Effects of the Invention]

[0009] Due to the aforementioned technical features, the mounting member is provided with female threads for fastening to the valve mechanism, thereby connecting the liquid nozzle, air nozzle, and mounting member without the need for a fastening structure. This effectively reduces the influence of gaps and dimensional tolerances caused by the fastening structure. Furthermore, the tapered surface of the positioning portion of the liquid nozzle and the inner conical surface of the air nozzle body of the air nozzle have corresponding taper angles. This allows the liquid nozzle to slide smoothly into the air nozzle during assembly and be automatically guided to the correct position. This ensures high concentricity between the liquid nozzle and the air nozzle, resulting in a uniform adhesive application effect. [Brief explanation of the drawing]

[0010] [Figure 1] This is an exploded perspective view of the nozzle component according to the present invention. [Figure 2] This is an exploded perspective view of the nozzle component according to the present invention, seen from a different angle. [Figure 3] This is a side view cross-sectional view of the nozzle component according to the present invention. [Figure 4] This is a side cross-sectional view of the nozzle component according to the present invention, viewed from another angle. [Figure 5] This is a side view cross-sectional view of the liquid nozzle and air nozzle according to the present invention. [Figure 6] This is a flowchart showing the assembly method according to the present invention. [Figure 7] This is a side view cross-sectional view showing a conventional spray nozzle. [Figure 8] This is a schematic side view diagram showing the usage state of a conventional spray nozzle. [Modes for carrying out the invention]

[0011] Figures 1 to 3 show the nozzle components of the spray nozzle of the present invention. These nozzle components are attached to the bottom of the valve mechanism 41 of the spray nozzle. A linearly movable needle pin 42 is provided inside the valve mechanism 41, and the nozzle components are positioned corresponding to the installation position of the needle pin 42. The nozzle components according to the present invention include a liquid nozzle 10, an air nozzle 20, and a mounting member 30.

[0012] As shown in Figure 5, the liquid nozzle 10 comprises a liquid nozzle flange 11, a positioning portion 12, a spray nozzle 13, and a flow path 14. A recessed conical impact receiving portion 111 is formed on the top surface of the liquid nozzle flange 11. The positioning portion 12 is formed to extend downward from the bottom surface of the liquid nozzle flange 11 and has a tapered shape in which the outer diameter gradually narrows from top to bottom, and has a tapered surface portion 121. The spray nozzle 13 is formed to extend further downward from the lower end of the positioning portion 12 and has a tapered shape in which the outer diameter gradually narrows from top to bottom. The flow path 14 penetrates the liquid nozzle flange 11, the positioning portion 12, and the spray opening 13. Specifically, it is formed to penetrate from the impact receiving portion 121 on the top surface of the liquid nozzle flange 11 to the bottom end of the spray opening 13, and forms an outlet 141 at the bottom end of the spray opening 13.

[0013] As shown in Figures 2 to 5, the air nozzle 20 is arranged to surround the liquid nozzle 10, that is, the liquid nozzle 10 is housed within the air nozzle 20, and the air nozzle 20 comprises an air nozzle body 21 and an air nozzle flange 22.

[0014] The air nozzle body 21 has a positioning recess 211, a nozzle accommodation recess 211, and at least a pair of vertical guide grooves 213. The positioning recess 211 is formed to be recessed at the top of the air nozzle body 21, and has a tapered shape in which the aperture diameter gradually narrows from the top to the bottom of the air nozzle body 21, forming a tapered space. The air nozzle body 21 has an inner conical surface 210 surrounding the tapered space. The positioning portion 12 of the liquid nozzle 10 is disposed corresponding to the positioning recess 211 of the air nozzle 20. Further, the taper angle θ2 of the inner conical surface 210 and the taper angle θ1 of the tapered surface portion 121 of the positioning portion 12 of the liquid nozzle 10 are in a corresponding relationship with each other, so that when assembled, the inner conical surface 210 is in close contact with the tapered surface portion 121. The taper angle θ1 of the tapered surface portion 121 of the positioning portion 12 is substantially equal to or slightly larger than the taper angle θ2 of the inner conical surface 210 of the air nozzle body 21 of the air nozzle 20, and the difference is 1 degree or less. In a preferred embodiment of the present invention, the taper angle θ1 of the tapered surface portion 121 of the positioning portion 12 is preferably set to 14 degrees, and the taper angle θ2 of the inner conical surface 210 of the air nozzle body 21 of the air nozzle 20 is preferably set to 15 degrees.

[0015] The nozzle accommodation recess 212 is formed to penetrate between the positioning recess 211 and the bottom of the air nozzle body 21. The spraying port 13 of the liquid nozzle 10 is disposed corresponding to the nozzle accommodation recess 212 of the air nozzle body 21 of the air nozzle 20, and a gap is formed between the spraying port 13 and the air nozzle body 21.

[0016] The at least a pair of vertical guide grooves 213 are formed to be recessed in the inner conical surface 210 of the air nozzle body 21. Each pair of vertical guide grooves 213 are disposed on opposite sides in the radial direction of the positioning recess 211. One end of each vertical guide groove 213 penetrates the top of the air nozzle body 21, and the other end communicates with the nozzle accommodation recess 212.

[0017] As shown in FIGS. 2 to 5, the air nozzle flange portion 22 is formed in an annular shape at the top of the air nozzle body 21 and is installed so as to surround the positioning recess 211. Further, it has an inner annular groove portion 221, an outer annular groove portion 222, and two lateral groove portions 223. Hereinafter, the air nozzle flange portion 22 will be described in detail. The inner annular groove portion 221 and the outer annular groove portion 222 are recessed concentrically at intervals on the top surface of the air nozzle flange portion 22, and an annular convex portion 224 is formed between the inner annular groove portion 221 and the outer annular groove portion 222. In a preferred embodiment of the present invention, the depth of the inner annular groove portion 221 is set to be larger than the depth of the outer annular groove portion 222, but it is not limited thereto. At the time of assembly, the liquid nozzle flange portion 11 of the liquid nozzle 10 is disposed corresponding to the inside of the inner annular groove portion 221 of the air nozzle flange portion 22 of the air nozzle 20. That is, the air nozzle flange portion 22 holds the liquid nozzle flange portion 11 so as to surround it. The two lateral groove portions 223 are formed penetrating through both opposite sides in the radial direction of the air nozzle flange portion 22.

[0018] The mounting member 30 holds the air nozzle 20 so as to surround it, and has a bottom surface portion 31 and a peripheral wall portion 32. The bottom surface portion 31 is annular, and a through hole 311 is provided at the center. The peripheral wall portion 32 is formed so as to extend upward from the outer peripheral edge of the bottom surface portion 31, and a female screw thread 321 is provided on the inner peripheral wall surface of the peripheral wall portion 32. At the time of assembly, the air nozzle flange portion 22 of the air nozzle 20 is installed on the bottom surface portion 31 of the mounting member 30, and the air nozzle body 21 of the air nozzle 20 passes through the through hole 311 of the bottom surface portion 31 and protrudes downward.

[0019] The female thread 321 of the peripheral wall portion 32 of the mounting member 30 is fastened with the male thread 411 provided on the outer peripheral wall surface of the valve mechanism 41 of the spray nozzle, thereby attaching the nozzle component according to the present invention to the valve mechanism 41. At this time, the inner annular groove portion 211, the outer annular groove portion 222, the two transverse groove portions 223 of the air nozzle flange portion 22 of the air nozzle 20, at least one pair of longitudinal guide groove portions 213 of the air nozzle body 21, and the gap between the spray port 13 and the air nozzle body 21 form a gas flow path, and gas can be supplied to the spray port 13 of the liquid nozzle 10 through this gas flow path.

[0020] The tip of the needle pin 42 installed in the valve mechanism 41 of the spray nozzle corresponds to the impact receiving portion 111 of the liquid nozzle flange 11 of the liquid nozzle 10, and the needle pin 42 moves linearly back and forth toward the impact receiving portion 111, thereby pushing the adhesive into the flow path 14 of the liquid nozzle 10. When the pushed-in adhesive flows out from the outlet 141 of the flow path 14, it is atomized by the gas supplied from the air nozzle 20. In a preferred embodiment of the present invention, it is preferable that the outlet 141 of the flow path 14 of the liquid nozzle 10 is on the same plane as the bottom of the air nozzle body 21, but the invention is not limited thereto.

[0021] As shown in Figure 6, the method for assembling the nozzle component in the correct position is as follows. First, the liquid nozzle 10 of the nozzle component according to the present invention is incorporated into the air nozzle 20. At this time, the positioning portion 12 of the liquid nozzle 10 is placed in the positioning recess 211 of the air nozzle 20, and the inner circumferential conical surface 210 of the air nozzle 20 and the tapered surface portion 121 of the liquid nozzle 10 are brought into close contact so that they correspond to each other. The spray opening 13 of the liquid nozzle 10 is placed in the nozzle housing recess 212 of the air nozzle 20, and the liquid nozzle flange portion 11 of the liquid nozzle 10 is fitted into the air nozzle flange portion 22 of the air nozzle 20. [Explanation of symbols]

[0022] 10 Liquid Nozzles 11 Liquid nozzle flange 111 Impact receiving part 12 Positioning section 121 Tapered surface θ1 Taper angle 13 Spray nozzle 14 channels 141 Outlet 20 Air Nozzles 21 Air nozzle body 210 Inner conical surface θ2 Taper angle 211 Positioning recess 212 Nozzle housing recess 213 Vertical guide groove 22 Air nozzle flange 221 Inner annular groove 222 Outer annular groove 223 Horizontal groove section 224 Annular protrusion 30 Mounting components 31 Bottom part 311 Through hole 32 Peripheral wall section 321 Female screw thread 41 Valve mechanism 411 Male screw thread 42 Needle Pins 51 Liquid Nozzle 511 Liquid nozzle flange 512 Torso 513 Channel 52 Adapter component 53 Air nozzle 54 Mounting components 61 Valve mechanism 62. Objects to which adhesive will be applied.

Claims

1. A nozzle component of a spray nozzle, comprising a liquid nozzle and an air nozzle, The liquid nozzle comprises a liquid nozzle flange, a positioning portion, a spray port, and a flow path. The positioning portion is formed to extend downward from the bottom surface of the liquid nozzle flange, has a tapered shape in which the outer diameter gradually narrows from top to bottom, and has a tapered surface. The spray port is formed to extend further downward from the lower end of the positioning portion. The flow path penetrates the liquid nozzle flange, the positioning portion, and the spray port. The air nozzle is installed so as to cover the outside of the liquid nozzle and comprises an air nozzle body and an air nozzle flange. A positioning recess and a nozzle housing recess are formed inside the air nozzle body, the positioning recess is formed to be recessed in the top of the air nozzle body, and has a tapered shape in which the diameter of the opening gradually narrows from the top to the bottom of the air nozzle body, forming a tapered space, the air nozzle body has an inner conical surface surrounding the tapered space, the positioning part of the liquid nozzle is positioned in the positioning recess, the taper angle of the inner conical surface and the taper angle of the tapered surface of the positioning part of the liquid nozzle are in a corresponding relationship, the nozzle housing recess is formed to penetrate between the positioning recess and the bottom of the air nozzle body, and the spray port of the liquid nozzle is positioned in the nozzle housing recess. The air nozzle flange is provided at the top of the air nozzle body and is arranged to surround the liquid nozzle flange. The nozzle component for a spray nozzle is characterized in that the taper angle of the tapered surface portion of the positioning portion of the liquid nozzle is equal to or slightly larger than the taper angle of the inner conical surface of the air nozzle body of the air nozzle, and the difference between the taper angle of the tapered surface portion and the taper angle of the inner conical surface is 1 degree or less.

2. The nozzle component of the spray nozzle according to claim 1, wherein the nozzle component of the spray nozzle includes a mounting member, the mounting member having a bottom surface and a peripheral wall, the bottom surface having a through hole, the peripheral wall being formed to extend upward from the outer peripheral edge of the bottom surface and having female threads on its inner peripheral wall surface, the air nozzle flange of the air nozzle being positioned on the bottom surface of the mounting member, and the air nozzle body of the air nozzle passing through the through hole of the bottom surface and protruding downward.

3. The nozzle component of a spray nozzle according to claim 1, wherein the air nozzle body of the air nozzle is provided with at least one pair of longitudinal guide grooves, the at least one pair of longitudinal guide grooves is formed to be recessed in the inner circumferential conical surface of the air nozzle body, the pair of longitudinal guide grooves is arranged on opposing sides in the radial direction of the positioning recess, one end of each longitudinal guide groove penetrates the top of the air nozzle body and the other end communicates with the nozzle housing recess.

4. The nozzle component for a spray nozzle according to any one of claims 1 to 3, characterized in that the air nozzle flange of the air nozzle is provided with two transverse grooves, and the two transverse grooves are formed to penetrate through to opposing sides of the air nozzle flange in the radial direction.

5. The nozzle component for a spray nozzle according to claim 4, characterized in that an inner annular groove and an outer annular groove are formed as recesses on the top surface of the air nozzle flange of the air nozzle, arranged concentrically at intervals, and an annular protrusion is formed between the inner annular groove and the outer annular groove.

6. The nozzle component of a spray nozzle according to claim 5, characterized in that the depth of the inner annular groove is greater than the depth of the outer annular groove.

7. The nozzle component for a spray nozzle according to any one of claims 1 to 3, characterized in that the taper angle of the tapered surface portion of the positioning portion of the liquid nozzle is 14 degrees, and the taper angle of the inner circumferential conical surface of the air nozzle body of the air nozzle is 15 degrees.

8. The nozzle component of a spray nozzle according to claim 7, characterized in that the flow path of the liquid nozzle has an outlet formed at the bottom end of the spray opening, and the outlet is on the same plane as the bottom of the air nozzle body.

9. A method for assembling nozzle components of a spray nozzle into precise positions, comprising the steps of preparing a liquid nozzle, preparing an air nozzle, and incorporating the liquid nozzle into the air nozzle, In the step of preparing the liquid nozzle, the liquid nozzle comprises a liquid nozzle flange, a positioning portion formed to extend downward from the bottom surface of the liquid nozzle flange, a spray port formed to extend further downward from the lower end of the positioning portion, and a flow path that penetrates the liquid nozzle flange, the positioning portion, and the spray port, wherein the positioning portion has a tapered shape in which the outer diameter gradually narrows from the top to the bottom and has a tapered surface portion. In the step of preparing the air nozzle, the air nozzle comprises an air nozzle body having a positioning recess and a nozzle housing recess inside, and an air nozzle flange formed at its top, the positioning recess is formed to be recessed in the top of the air nozzle body and has a tapered shape in which the diameter of the opening gradually narrows from the top to the bottom of the air nozzle body, forming a tapered space, the air nozzle body has an inner conical surface surrounding the tapered space, the tapered surface portion of the liquid nozzle positioning portion has a taper angle equal to or slightly larger than the inner conical surface of the air nozzle body, and the difference between the taper angle of the tapered surface portion and the taper angle of the inner conical surface is 1 degree or less. A method for assembling a nozzle component of a spray nozzle in the correct position, characterized in that, in the step of incorporating the liquid nozzle into the air nozzle, the positioning portion of the liquid nozzle is placed in the positioning recess of the air nozzle, the inner circumferential conical surface and the tapered surface portion are brought into close contact with each other, the spray opening of the liquid nozzle is placed in the nozzle housing recess of the air nozzle, and the liquid nozzle flange portion of the liquid nozzle is fitted into the air nozzle flange portion of the air nozzle.

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