Ultra-long hot melt adhesive dispensing needle

Abstract

The utility model relates to the technical field of hot melt adhesive dispensing needles, in particular to an ultra-long hot melt adhesive dispensing needle, which comprises a needle seat, a needle tube is fixedly mounted at the bottom end of the needle seat and communicated with the needle seat, an inner insulating layer is fixedly mounted on the surface of the needle tube, a heating layer is fixedly mounted on the insulating layer, and an outer insulating layer is fixedly mounted on the heating layer. And an outer insulating layer is fixedly mounted on the heating layer. According to the utility model, the needle tube with the length of 100 millimeters is arranged, so that the needle tube can touch a position which is difficult to reach by a common needle head, such as a deep cavity, a slit or the interior of a complex structure. Meanwhile, the dispensing needle head can directly reach a target area with a long distance or a large depth, and the dispensing position does not need to be frequently replaced or a plurality of needle head combinations do not need to be used, so that the working efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hot melt adhesive dispensing needles, in particular to an extra-long hot melt adhesive dispensing needle. Background Technique

[0002] The extra-long hot melt adhesive dispensing needle is a tool specifically designed for precision and special requirements of hot melt adhesive dispensing applications, especially suitable for those working occasions that require deep into narrow spaces or have strict requirements for the dispensing position.

[0003] At present, the market lacks effective technical solutions for extra-long hot melt adhesive heating needles, making it difficult to meet the precise dispensing requirements for small, deep grooves or irregular surfaces in modern electronic manufacturing. This results in problems such as incomplete dispensing and inaccurate glue volume control during the bonding process of some special structural components, affecting the consistency and reliability of products. The utility model patent successfully fills the technical gap, and the heat preservation structure of the hot melt adhesive heating needle is single, resulting in rapid heat dissipation. Content of the Utility Model

[0004] The purpose of the utility model is to provide an extra-long hot melt adhesive dispensing needle to solve the above-mentioned disadvantages existing in the prior art.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] Design an extra-long hot melt adhesive dispensing needle, including a needle seat, characterized in that: a needle tube is fixedly installed at the bottom end of the needle seat, the needle tube communicates with the needle seat, an inner insulation layer is fixedly installed on the surface of the needle tube, a heating layer is fixedly installed on the insulation layer, and an outer insulation layer is fixedly installed on the heating layer.

[0007] Further, the needle tube is made of stainless steel.

[0008] Further, the inner insulation layer is made of aluminum nitride ceramic coating.

[0009] Further, the heating layer includes a heat conduction layer, the heat conduction layer is fixedly installed between the inner insulation layer and the outer insulation layer, and a heating wire is installed in the heat conduction layer.

[0010] Further, the heat conduction layer is made of silicon carbide.

[0011] Further, the outer insulation layer is made of glass fiber reinforced plastic.

[0012] The ultra-long dispensing needle tip for hot melt adhesive proposed by the present utility model has the beneficial effects as follows: By setting a syringe tube with a length of 100 millimeters, it can reach positions that are difficult for general needle tips to reach, such as deep cavities, narrow slits, or the interior of complex structures. At the same time, it enables the dispensing needle tip to directly reach the target area at a relatively long distance or with a large depth, without the need to frequently change the dispensing position or use a combination of multiple needle tips, thus greatly improving the operation efficiency. By setting an inner insulation layer, it is convenient to protect the syringe tube and at the same time achieve a stable linear output of the temperature of the heating layer. By setting a heating layer, when the syringe tube is in use, it serves the purpose of increasing the heating function of the syringe tube, which is beneficial to the use of the syringe tube. By setting an outer insulation layer, the outer insulation layer protects the heating layer from external damage and the safety of operators, and at the same time avoids heat loss. Brief Description of the Drawings

[0013] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0014] Figure 2 It is a schematic diagram of the syringe tube of the present utility model;

[0015] Figure 3 It is a transverse sectional view of the heating layer of the present utility model;

[0016] Figure 4 It is a schematic diagram of the heating layer of the present utility model.

[0017] In the figure: 1, needle tip seat; 2, syringe tube; 3, inner insulation layer; 4, heating layer; 41, heat conduction layer; 42, heating wire; 5, outer insulation layer. Detailed Description of the Preferred Embodiment

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0019] Refer to Figures 1-4, The hot melt adhesive extra-long dispensing needle head, including a needle head seat 1, is characterized in that: a needle tube 2 is fixedly installed at the bottom end of the needle head seat 1. The length of the needle tube 2 is one hundred millimeters and it has an ultra-thin wall thickness, which enables it to reach positions that are difficult for ordinary needle heads to reach, such as deep cavities, narrow slits or the interior of complex structures. At the same time, it enables the dispensing needle head to directly reach target areas at a relatively long distance or with a relatively large depth, without the need to frequently change the dispensing position or use a combination of multiple needle heads, thus greatly improving the operation efficiency. The needle tube 2 is connected to the needle head seat 1. An inner insulation layer 3 is fixedly installed on the surface of the needle tube 2. By setting the inner insulation layer 3, it is convenient to protect the needle tube 2 and at the same time achieve a stable linear output of the temperature of the heating layer 4. A heating layer 4 is fixedly installed on the insulation layer 3. By setting the heating layer 4, when the needle tube 2 is in use, it serves the purpose of increasing the heating function of the needle tube 2, which is beneficial to the use of the needle tube 2. An outer insulation layer 5 is fixedly installed on the heating layer 4. By setting the outer insulation layer 5, the outer insulation layer 5 protects the heating layer 4 from external damage and the safety of operators, and at the same time avoids heat loss.

[0020] Specifically, the needle tube 2 is made of stainless steel. Stainless steel has good mechanical strength, can withstand large loads and pressures, and still maintains certain performance and structural stability in high-temperature environments. At the same time, stainless steel can resist the erosion of various chemical substances and is not easy to rust and corrode.

[0021] Furthermore, the inner insulation layer 3 is made of aluminum nitride ceramic coating. The aluminum nitride ceramic coating has extremely high thermal conductivity. At the same time, the aluminum nitride ceramic coating has excellent mechanical properties, and its flexural strength is higher than that of alumina and beryllia ceramics. This high strength makes aluminum nitride ceramics have advantages in wear-resistant and impact-resistant applications, can withstand large mechanical stresses without damage, and the aluminum nitride ceramic coating is an electrical insulator with good dielectric properties. The aluminum nitride ceramic coating has extremely high resistance to most acids, alkalis and organic solvents. By setting the inner insulation layer 3, it is convenient to protect the needle tube 2 and at the same time achieve a stable linear output of the temperature of the heating layer 4.

[0022] Still further, the heating layer 4 includes a heat conduction layer 41. The heat conduction layer 41 is fixedly installed between the inner insulation layer 3 and the outer insulation layer 5. A heating wire 42 is installed in the heat conduction layer 41. By setting the heat conduction layer 41, it is convenient to conduct the heat generated by the heating wire 42, and the heating wire 42 is used to provide heat.

[0023] More specifically, the heat conduction layer 41 is made of silicon carbide. The thermal conductivity of silicon carbide is very excellent. Silicon carbide not only has a high thermal conductivity but also has high thermal stability. At high temperatures, the electrons of silicon carbide are not easy to transition, and it can withstand higher working temperatures. By setting the heat conduction layer 41, it is convenient to conduct the heat generated by the heating wire 42.

[0024] Generally speaking, the outer insulating layer 5 is made of glass fiber reinforced plastic. Glass fiber has good strength, rigidity and wear resistance. It is made by drawing glass melt, so it has good toughness and tensile strength. After adding glass fiber to plastic, the wear resistance of plastic products can be significantly improved because the hardness and anti-wear performance of glass fiber can effectively enhance the overall wear resistance of plastic. Due to its unique material composition, that is, the composite of glass fiber and resin matrix, glass fiber reinforced plastic can isolate the heat transfer to a certain extent. Glass fiber itself has high thermal stability and heat resistance and can maintain structural stability in high-temperature environments. By providing the outer insulating layer 5, the outer insulating layer 5 protects the heating layer 4 from external damage and ensures the safety of operators, while avoiding heat loss.

[0025] Working mode; During operation, since the length of the syringe needle 2 is 100 mm, it can reach positions that are difficult for ordinary needles to reach, such as deep cavities, narrow slits or the inside of complex structures. At the same time, it enables the dispensing needle to directly reach the target area at a relatively long distance or with a large depth, without the need to frequently change the dispensing position or use a combination of multiple needles, thus greatly improving the operation efficiency and being applicable to more diverse complex structure adhesions, especially showing superiority in high-tech fields such as precision electronics and medical devices.

[0026] At the same time, by providing the inner insulating layer 3, it is convenient to protect the syringe needle 2 and at the same time achieve a stable linear output of the temperature of the heating layer 4. By providing the heating layer 4, when the syringe needle 2 is in use, it serves the purpose of increasing the heating function of the syringe needle 2, which is beneficial to the use of the syringe needle 2. By providing the outer insulating layer 5, the outer insulating layer 5 protects the heating layer 4 from external damage and ensures the safety of operators, while avoiding heat loss.

[0027] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An extra-long hot melt adhesive dispensing needle, comprising a needle seat (1), characterized in that: A needle tube (2) is fixedly mounted on the bottom end of the needle seat (1); the needle tube (2) is connected to the needle seat (1); an inner insulating layer (3) is fixedly mounted on the surface of the needle tube (2); a heating layer (4) is fixedly mounted on the insulating layer (3); and an outer insulating layer (5) is fixedly mounted on the heating layer (4).

2. The hot melt adhesive super-long dispensing needle according to claim 1, characterized in that: The needle tube (2) is made of stainless steel.

3. The hot melt adhesive super-long dispensing needle according to claim 1, characterized in that: The inner insulating layer (3) is made of aluminum nitride ceramic coating.

4. The hot melt adhesive super-long dispensing needle according to claim 1, characterized in that: The heating layer (4) comprises a heat-conducting layer (41), the heat-conducting layer (41) is fixedly installed between the inner insulating layer (3) and the outer insulating layer (5), and a heating wire (42) is installed in the heat-conducting layer (41).

5. The hot melt adhesive super-long dispensing needle according to claim 4, characterized in that: The heat conducting layer (41) is made of silicon carbide.

6. The hot melt adhesive super-long dispensing needle according to claim 1, characterized in that: The outer insulating layer (5) is made of glass fiber reinforced plastic.

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