Nozzle, nozzle set and glue spraying valve

Abstract

The utility model provides a nozzle, a nozzle group and a glue spraying valve. The nozzle comprises a fixing cap which is provided with a through hole; the guide piece is accommodated in the through hole, and the guide piece is provided with an accommodating hole and a guide hole communicated with the accommodating hole; and the protective sleeve is sleeved on the fixing cap and the guide piece, and the guide hole is exposed out of the protective sleeve. And at least partial area of the hole wall of the accommodating hole is obliquely arranged. The nozzle provided by the utility model has relatively high universality.

Description

Technical Field

[0001] This utility model relates to the field of glue spraying valve technology, and in particular to a nozzle, nozzle assembly and glue spraying valve. Background Technology

[0002] Existing nozzles have significant limitations and low versatility. Specifically, they are only suitable for adhesives with viscosities between 2000 cps and 6000 cps. Excessive viscosity can easily lead to nozzle clogging and uneven spraying, while insufficient viscosity can result in adhesive residue, scattering, and uneven spraying. Furthermore, existing nozzles are only suitable for adhesives with dosages between 0.2 mg and 0.5 mg. Excessive dosage can easily lead to nozzle clogging, unstable dispensing, and uneven spraying, while insufficient dosage can easily result in scattering and residue. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a nozzle with high versatility.

[0004] This utility model provides a nozzle, which includes:

[0005] The fixing cap has a through hole;

[0006] A guide member, accommodated in the through hole, the guide member having a receiving hole and a guide hole communicating with the receiving hole, at least a portion of the wall of the receiving hole being inclined; and

[0007] A protective sleeve is fitted over the fixing cap and guide, and the guide hole is exposed through the protective sleeve.

[0008] Furthermore, the receiving hole includes a first receiving hole, a second receiving hole, and a third receiving hole that communicates with the guide hole. The angle between the wall of the first receiving hole and the central axis of the nozzle is 10°-30°, the angle between the wall of the second receiving hole and the central axis X is 30°-70°, and the angle between the wall of the third receiving hole and the central axis X is 10°-40°.

[0009] Furthermore, the length of the guide hole is 5mm-20mm.

[0010] Furthermore, the receiving hole has a conical structure, the angle between the hole wall and the central axis of the nozzle is 10°-50°, and the length of the guide hole is 5mm-20mm.

[0011] Furthermore, the receiving hole includes a fourth receiving hole, a fifth receiving hole, and a sixth receiving hole that communicates with the guide hole. The fourth receiving hole is a straight hole, the angle between the hole wall of the fifth receiving hole and the central axis of the nozzle is 5°-30°, and the angle between the hole wall of the sixth receiving hole and the central axis is 30°-60°.

[0012] Furthermore, the length of the guide hole is 1mm-5mm.

[0013] Furthermore, the receiving hole includes a seventh receiving hole, an eighth receiving hole, and a ninth receiving hole that communicates with the guide hole. The angle between the wall of the seventh receiving hole and the central axis X of the nozzle is 5°-30°, the bottom wall of the eighth receiving hole is arc-shaped, and the angle between the wall of the ninth receiving hole and the central axis is 20°-50°.

[0014] Furthermore, the length of the guide hole is 5mm-20mm.

[0015] This utility model also provides a nozzle assembly, which includes the above-mentioned multiple nozzles.

[0016] This utility model also provides a glue spraying valve, which includes any of the above-mentioned nozzles or the above-mentioned nozzle group.

[0017] In this utility model, the nozzle includes a fixing cap, a guide member, and a protective sleeve fitted onto the fixing cap and the guide member. The fixing cap has a through hole, and the guide member is accommodated in the through hole and exposed by the protective sleeve. The guide member has a receiving hole and a guide hole communicating with the receiving hole. At least a portion of the wall of the receiving hole is inclined to adjust the flow rate of the adhesive. The adhesive can flow at a suitable speed. During the reciprocating impact of the ejector pin, each impact completely discharges the adhesive in the receiving hole through the guide hole, thus solving problems such as nozzle clogging, unstable adhesive dispensing, uneven adhesive spraying, adhesive residue, adhesive scattering, and uneven adhesive spraying that easily occur during adhesive spraying. Attached Figure Description

[0018] To more clearly illustrate the solution of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the first nozzle of this utility model.

[0020] Figure 2 yes Figure 1A schematic diagram of the structure of the first nozzle at another angle is shown.

[0021] Figure 3 yes Figure 1 A schematic diagram of the structure of the first nozzle at another angle is shown.

[0022] Figure 4 yes Figure 1 The diagram shows a plan view of the first nozzle, in which the firing pin is housed.

[0023] Figure 5 yes Figure 4 The image shows a cross-sectional view of the first nozzle and the firing pin.

[0024] Figure 6 yes Figure 5 Enlarged view of point A in the middle.

[0025] Figure 7 This is a cross-sectional view of the second nozzle, in which the firing pin is housed.

[0026] Figure 8 yes Figure 7 Enlarged view of point B in the middle.

[0027] Figure 9 This is a cross-sectional view of the third nozzle, in which the firing pin is housed.

[0028] Figure 10 yes Figure 9 A magnified view of point C in the middle.

[0029] Figure 11 This is a cross-sectional view of the fourth nozzle, in which the firing pin is housed.

[0030] Figure 12 yes Figure 11 Enlarged view of point D in the middle.

[0031] Explanation of icon numbers:

[0032]

[0033]

[0034] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0035] 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.

[0036] Please refer to Figure 1-12 One embodiment of this utility model provides a nozzle assembly, which includes a plurality of nozzles, and different nozzles can be selected according to different needs. The nozzle assembly may include a first nozzle 100a, a second nozzle 100b, a third nozzle 100c, and a fourth nozzle 100d.

[0037] Please refer to Figure 1-6 The first nozzle 100a is suitable for low-viscosity adhesives and includes a fixing cap 10a, a guide member 20a, and a protective sleeve 30a. The fixing cap 10a includes a receiving cavity 101a, and a through hole 111a communicating with the receiving cavity 101a is formed in the bottom wall 11a. The through hole 111a is located in the central region of the bottom wall 11a, ensuring that the firing pin 200 is always centered in the first nozzle 100a. The guide member 20a is accommodated in the receiving cavity 101a and the through hole 111a, and is exposed through the through hole 111a. The guide member 20a has a receiving hole 21a and a guide hole 22a communicating with the receiving hole 21a. The guide hole 22a serves as an adhesive channel, guiding the adhesive. The adhesive can be intermittently delivered to the receiving hole 21a. The striking pin 200 can extend into the receiving hole and intermittently strike the adhesive in the receiving hole 21a, so that the adhesive can be delivered through the guide hole 22a to the outside of the guide member 20a for dispensing. It is understood that the method of intermittently delivering the adhesive to the receiving hole 21a is a common technical means in the art, and this utility model will not be described in detail here. For example, a through hole (not shown) can be opened on the side wall of the fixing cap 10a and the guide member 20a, and a glue tube (not shown) can be connected to the through hole to intermittently or pulsedly deliver external adhesive to the receiving hole 21a through the glue tube.

[0038] The outer wall of the guide member 20a is provided with a connecting part 23a, which can be placed around the periphery of the through hole 111a to connect the guide member 20a to the fixing cap 10a. The bottom wall of the guide member 20a is also provided with a protrusion 24a, through which the guide hole 22a passes. The bottom surface 241a of the protrusion 24a can be flush with the bottom surface 311a of the protective sleeve 30a, or the bottom surface 241a of the protrusion 24a can be higher than the bottom surface 311a of the protective sleeve 30a, so as to ensure smooth glue spraying, improve glue spraying quality, and effectively protect the guide member 20a.

[0039] The protective sleeve 30a is fitted onto the fixing cap 10a and the guide member 20a. The protective sleeve 30a has a through hole 31a, allowing it to fit over the fixing cap 10a and the guide member 20a. The inner wall of the through hole 31a may also have a recessed step 32a. The protrusion 12a of the fixing cap 10a is detachably mounted on the step 32a, allowing for easy removal during routine maintenance to facilitate cleaning, replacement, and maintenance of the firing pin 200 and nozzle. The through hole 111a penetrates the protrusion 12a. The wall of the through hole 111a can be fitted against the outer wall of the guide member 20a to stabilize it. The wall of the through hole 31a and the outer wall of the guide member 20a can be spaced apart, forming a gap 312a, to allow for the removal of the protective sleeve 30a. The adhesive outlet of the guide 20a, i.e. the protrusion 24a, is a micro-point structure, which is easily damaged and worn during debugging and use. The protective sleeve 30a can prevent it from being bumped during debugging and use.

[0040] The receiving hole 21a includes a first receiving hole 211a, a second receiving hole 212a, and a third receiving hole 213a that are connected to each other. The third receiving hole 213a is directly connected to the guide hole 22a. External adhesive can be delivered to the first receiving hole 211a, the second receiving hole 212a, and the third receiving hole 213a. The amount of adhesive can be adjusted according to the actual dispensing needs to set whether the adhesive is contained in the third receiving hole 213a, the second receiving hole 212a, the third receiving hole 213a, or the first receiving hole 211a, the second receiving hole 212a, and the third receiving hole 213a.

[0041] The angle α1 between the wall of the first receiving hole 211a and the central axis X of the nozzle 100a is smaller than the angle between the wall of the second receiving hole 212a and the central axis X.

[0042] The angle α1 between the wall of the first receiving hole 211a and the central axis X is 10°-30°, specifically 10°, 20° or 30°. The length of the first receiving hole 211a is 10mm-50mm, specifically 10mm, 20mm, 30mm, 40mm or 50mm.

[0043] The angle between the wall of the second receiving hole 212a and the central axis X is 30°-70°, specifically 30°, 40°, 50°, 60°, or 70°. The length of the second receiving hole 212a is 5mm-20mm, specifically 5mm, 10mm, 15mm, or 20mm.

[0044] The angle between the wall of the third receiving hole 213a and the central axis X is 10°-40°, specifically 10°, 20°, 30° or 40°. The length of the third receiving hole 213a is 1mm-5mm, specifically 1mm, 2mm, 3mm, 4mm or 5mm.

[0045] The diameter of the guide hole 22a is 0.1mm-5mm, specifically 0.1mm, 0.5mm, 1mm, 3mm, or 5mm. The length of the guide hole 22a is 5mm-20mm, specifically 5mm, 10mm, 15mm, or 20mm. The smaller diameter and longer length of the guide hole 22a allow for a longer adhesive spraying effect, resulting in greater pressure of the adhesive within the receiving hole 21a and preventing adhesive scattering during spraying.

[0046] When the firing pin 200 is fully accommodated in the receiving hole 21a, the length L1 of the receiving space 214a between the bottom of the firing pin 200 and the bottom of the third receiving hole 213a is 5mm-25mm, specifically 5mm, 10mm, 15mm, 20mm, or 25mm. It is understood that the receiving space 214a is used to hold the adhesive, and a single impact of the firing pin 200 can completely discharge the adhesive in the receiving space 214a through the guide hole 22a for dispensing. The relatively short length of the receiving space 214a, i.e., the smaller space used to hold the adhesive, avoids excessive adhesive accumulation.

[0047] The first nozzle 100a is suitable for adhesives with low viscosity. Adhesives with low viscosity have a faster flow rate. The angle of the second receiving orifice 212a is greater than the angles of the first receiving orifice 211a and the third receiving orifice 213a. The angle of the third receiving orifice 213a is greater than the angle of the first receiving orifice 211a. The smaller angle of the first receiving orifice 211a increases the adhesive flow rate; the larger angle of the second receiving orifice 212a increases the adhesive capacity; and the smaller angle of the third receiving orifice 213a further increases the adhesive flow rate.

[0048] When a low-viscosity adhesive is delivered into the receiving orifice 21a, the adhesive can be quickly delivered to the guide orifice 22a due to the small angle between the first receiving orifice 211a and the third receiving orifice 213a. Because the receiving space 214a is small and the guide orifice 22a is long, the amount of adhesive can be reduced simultaneously, and the flow rate of the adhesive in the guide orifice 22a can be slowed down, avoiding adhesive dripping and scattering caused by gravity. Thus, the first nozzle 100a is suitable not only for adhesives with a viscosity of 2000cps-6000cps, but also for adhesives with a viscosity below 2000cps (such as 1500cps), without problems such as adhesive dripping, scattering, nozzle clogging, unstable adhesive dispensing, or uneven spraying. The applicable adhesive amount for the first nozzle 100a is 0.3-0.6mg.

[0049] The impact pin 200 is pushed up and down repeatedly. Each impact of the impact pin 200 can completely push out the glue in the receiving space 214a, preventing the glue from hardening in the receiving hole 21a and causing nozzle blockage.

[0050] Please refer to Figure 7-8 The second nozzle 100b is similar to the first nozzle 100a, but the difference lies in that the receiving orifice 21b is approximately conical. The second nozzle 100b is suitable for adhesives with high viscosity and slow flow rate.

[0051] The included angle α2 between the receiving hole 21b and the central axis X is 10°-50°, specifically 10°, 20°, 30°, 40°, or 50°. The receiving hole 21b of the second nozzle 100b has a small angle and a large slope, which can accelerate the flow speed of the adhesive. The length of the receiving hole 21b is 10mm-60mm, specifically 10mm, 20mm, 30mm, 40mm, 50mm, or 60mm.

[0052] When the firing pin 200 is fully accommodated in the receiving hole 21b, the length L2 of the receiving space 214b between the bottom of the firing pin 200 and the bottom of the receiving hole 21b is 20mm-40mm, specifically 20mm, 30mm, or 40mm. It is understood that the receiving space 214b is used to hold the adhesive. A single impact of the firing pin 200 can completely discharge the adhesive in the receiving space 214b through the guide hole 22b for dispensing. The relatively large length of the receiving space 214b provides ample space to hold the adhesive. The large length of the receiving space 214b, coupled with the small angle and large slope of the receiving hole 21b, allows for faster adhesive flow while maintaining the amount of adhesive, resulting in smoother dispensing.

[0053] The diameter of the guide hole 22b is 0.1mm-5mm, specifically 0.1mm, 0.5mm, 1mm, 3mm, or 5mm. The length of the guide hole 22b is 5mm-20mm, specifically 5mm, 10mm, 15mm, or 20mm. The smaller diameter and longer length of the guide hole 22b result in a longer spraying effect, allowing for greater pressure of the adhesive within the receiving hole 21b, thus preventing adhesive scattering or sticking during spraying. Therefore, the second nozzle 100b is suitable not only for adhesives with a viscosity of 2000cps-6000cps, but also for adhesives with a viscosity above 6000cps (e.g., 6500cps), without problems such as adhesive sticking, scattering, nozzle clogging, unstable adhesive dispensing, or uneven spraying. The applicable adhesive amount for the second nozzle 100b is 0.3-1mg.

[0054] A connecting hole 25b may be further provided between the guide hole 22b and the receiving hole 21b. The length of the connecting hole 25b can be 0.5-2mm, specifically 0.5mm, 1mm, or 2mm. The inner wall of the connecting hole 25b is arc-shaped to buffer the impact force when glue enters the guide hole 22b from the receiving hole 21b. Both ends of the inner wall of the connecting hole 25b can be flared.

[0055] The impact pin 200 is pushed up and down repeatedly. Each impact of the impact pin 200 can completely push out the glue in the receiving space 214b, preventing the glue from hardening in the receiving hole 21b and causing nozzle blockage.

[0056] Please refer to Figure 9-10 The third nozzle 100c is similar to the first nozzle 100a, but the differences include: the receiving hole 21c includes a fourth receiving hole 211c, a fifth receiving hole 212c, and a sixth receiving hole 213c. The fourth receiving hole 211c is a straight hole, and the sixth receiving hole 213c is connected to the guide hole 22c. Generally speaking, the receiving hole 21c has a large angle and a small slope, which slows down the flow rate of the adhesive, making the third nozzle 100c suitable for adhesives with low viscosity and fast flow rate, and for situations where the amount of adhesive required is small.

[0057] The length of the fourth accommodating hole 211c is 2-10mm, specifically 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm or 10mm.

[0058] The angle α3 between the wall of the fifth accommodating hole 212c and the central axis X is 5°-30°, specifically 5°, 10°, 20° or 30°.

[0059] The angle between the wall of the sixth accommodating hole 213c and the central axis X is 20°-50°, specifically 20°, 30°, 40° or 50°.

[0060] When the firing pin 200 is fully accommodated in the receiving hole 21c, the length L3 of the receiving space 214c between the bottom of the firing pin 200 and the bottom of the receiving hole 21c is 1-6mm, specifically 1mm, 2mm, 3mm, 4mm, 5mm, or 6mm. It is understood that the receiving space 214c is used to hold the adhesive, and a single impact of the firing pin 200 can completely discharge the adhesive in the receiving space 214c through the guide hole 22c for dispensing. The extremely small length of the receiving space 214c results in a very small space for holding the adhesive, leading to a small amount of adhesive dispensed, thus achieving the effect of small adhesive volume.

[0061] The diameter of the guide hole 22c is 0.1mm-5mm, specifically 0.1mm, 0.5mm, 1mm, 3mm, or 5mm. The length of the guide hole 22c is 1mm-5mm, specifically 1mm, 2mm, 3mm, 4mm, or 5mm, and is relatively short. Because the adhesive has low viscosity, fast flow rate, and requires a small amount of adhesive, the short length of the guide hole 22c ensures that only a very small amount of adhesive remains in the sixth section receiving hole 213c / receiving space 214c. This prevents the adhesive from flowing downwards due to its weight, avoiding overflow. Furthermore, it prevents adhesive scattering and residue after spraying stops and starts. Thus, the third nozzle 100c is suitable not only for adhesives with a viscosity of 2000 cps-6000 cps, but also for adhesives with a viscosity below 2000 cps (such as 1500 cps). Even when the amount of adhesive is less than 0.2 mg (such as 0.1 mg), it will not cause problems such as adhesive dripping, adhesive scattering, nozzle clogging, unstable adhesive dispensing, or uneven adhesive spraying. The applicable adhesive amount for the third nozzle 100c is 0.1-0.5 mg.

[0062] The impact pin 200 is pushed up and down repeatedly. Each impact of the impact pin 200 can completely push out the glue in the receiving space 214c, preventing the glue from hardening in the receiving hole 21c and causing nozzle blockage.

[0063] Please refer to Figure 11-12 The fourth nozzle 100d is similar to the first nozzle 100a, but the difference lies in that the receiving hole 21d includes a seventh receiving hole 211d, an eighth receiving hole 212d, and a ninth receiving hole 213d, the ninth receiving hole 213d being connected to the guide hole 22d. The fourth nozzle 100d is suitable for situations with high viscosity and large adhesive requirements.

[0064] The angle α4 between the wall of the seventh receiving hole 211d and the central axis X is 5°-30°, specifically 5°, 10°, 20° or 30°. The small angle and large slope of the seventh receiving hole 211d can accelerate the flow of glue, avoid nozzle clogging caused by the hardening of glue in the receiving hole 21d, and also reduce the situation of easy glue dispersion during glue spraying.

[0065] The bottom wall of the eighth accommodating hole 212d is arc-shaped.

[0066] The ninth receiving hole 213d is much smaller than the eighth receiving hole 212d and slightly larger than the guide hole 22d, serving as a channel connecting the eighth receiving hole 212d and the guide hole 22d. The angle between the wall of the ninth receiving hole 213d and the central axis X is 20°-50°, specifically 20°, 30°, 40°, or 50°. The length of the ninth receiving hole 213d is 0.5-2mm, specifically 0.5mm, 1mm, or 2mm.

[0067] When the firing pin 200 is fully accommodated in the receiving hole 21d, the length L4 of the receiving space 214d between the bottom of the firing pin 200 and the bottom of the receiving hole 21d is 1-10mm, specifically 1mm, 3mm, 5mm, 7mm, 9mm, or 10mm. It is understood that the receiving space 214d is used to hold the adhesive. A single impact of the firing pin 200 can completely discharge the adhesive in the receiving space 214d through the guide hole 22d for dispensing. The extremely long length of the receiving space 22d provides a large space for holding the adhesive, allowing for a larger amount of adhesive to be dispensed each time. This eliminates the need for high-frequency impacts and dispensing to achieve a large amount of adhesive, reducing the power consumption of the dispensing valve and extending its service life.

[0068] The diameter of the guide hole 22d is 0.1mm-5mm, specifically 0.1mm, 0.5mm, 1mm, 3mm or 5mm. The length of the guide hole 22d is 5mm-20mm, specifically 5mm, 10mm, 15mm or 20mm. The longer length provides a longer adhesive spraying effect, allowing the adhesive to have greater pressure within the receiving hole 21d, thus preventing adhesive scattering during the spraying process.

[0069] Thus, the fourth nozzle 100d is suitable not only for adhesives with a viscosity of 2000 cps-6000 cps, but also for adhesives with a viscosity above 6000 cps (such as 6500 cps). Even when the amount of adhesive is greater than 0.5 mg (such as 1 mg), it will not cause problems such as adhesive dripping, adhesive scattering, nozzle clogging, unstable adhesive dispensing, or uneven adhesive spraying. The third nozzle 100b is suitable for adhesive amounts of 0.3-1 mg.

[0070] The impact pin 200 is pushed up and down repeatedly. Each impact of the impact pin 200 can completely push out the glue in the receiving space 214d, preventing the glue from hardening in the receiving hole 21d and causing nozzle blockage.

[0071] This utility model also provides a glue spraying valve, which may include at least one nozzle as described above. The glue spraying valve may be a piezoelectric ceramic glue spraying valve. It is understood that the glue spraying valve also includes other necessary components for performing glue spraying, such as a valve body, a material storage assembly, and a valve seat, etc., and the nozzle is connected to the valve body. Because the glue spraying valve is equipped with the nozzle described above, it also possesses all the advantages described above. When the glue spraying valve is working, it drives the striking pin 200 to reciprocate up and down. When the striking pin 200 moves upward, it injects glue into the receiving hole; when the striking pin 200 moves downward, it impacts the glue, causing the glue to be discharged through the guide hole and out of the nozzle for dispensing.

[0072] The nozzle assembly of this invention can meet the needs of applications with viscosity ranging from 2000 cps to 6000 cps and adhesive dosage from 0.2 to 0.5 mg. It is also suitable for applications with viscosity below 2000 cps, viscosity above 6000 cps, adhesive dosage below 0.2 mg, and adhesive dosage above 0.5 mg. Therefore, the adhesive spray valve of this invention has a wider range of applications, higher efficiency, and can meet the adhesive spraying needs of different customers, achieving greater compatibility.

[0073] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A nozzle, characterized in that, include: The fixing cap has a through hole; A guide member, accommodated in the through hole, the guide member having a receiving hole and a guide hole communicating with the receiving hole, at least a portion of the wall of the receiving hole being inclined; and A protective sleeve is fitted over the fixing cap and guide, and the guide hole is exposed through the protective sleeve.

2. The nozzle according to claim 1, characterized in that, The receiving hole includes a first receiving hole, a second receiving hole, and a third receiving hole that communicates with the guide hole. The angle between the wall of the first receiving hole and the central axis of the nozzle is 10°-30°, the angle between the wall of the second receiving hole and the central axis X is 30°-70°, and the angle between the wall of the third receiving hole and the central axis X is 10°-40°.

3. The nozzle according to claim 2, characterized in that, The length of the guide hole is 5mm-20mm.

4. The nozzle according to claim 1, characterized in that, The receiving hole has a conical structure, the angle between the hole wall and the central axis of the nozzle is 10°-50°, and the length of the guide hole is 5mm-20mm.

5. The nozzle according to claim 1, characterized in that, The receiving hole includes a fourth receiving hole, a fifth receiving hole, and a sixth receiving hole that communicates with the guide hole. The fourth receiving hole is a straight hole. The angle between the hole wall of the fifth receiving hole and the central axis of the nozzle is 5°-30°. The angle between the hole wall of the sixth receiving hole and the central axis is 30°-60°.

6. The nozzle according to claim 5, characterized in that, The length of the guide hole is 1mm-5mm.

7. The nozzle according to claim 1, characterized in that, The receiving hole includes a seventh receiving hole, an eighth receiving hole, and a ninth receiving hole that communicates with the guide hole. The angle between the wall of the seventh receiving hole and the central axis X of the nozzle is 5°-30°. The bottom wall of the eighth receiving hole is arc-shaped. The angle between the wall of the ninth receiving hole and the central axis is 20°-50°.

8. The nozzle according to claim 7, characterized in that, The length of the guide hole is 5mm-20mm.

9. A nozzle assembly, characterized in that, This includes the nozzle as described in claim 2 or 3, the nozzle as described in claim 4, the nozzle as described in claim 5 or 6, and the nozzle as described in claim 7 or 8.

10. A glue spraying valve, characterized in that, Includes the nozzle as described in any one of claims 1-8 or the nozzle assembly as described in claim 9.

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