Liquid smearing needle head
By designing the structure of the liquid application needle and utilizing a combination of liquid channel, conical channel and spiral channel, the problem of uneven glue dispensing in the existing technology is solved, and the effect of moderate glue dispensing and uniform application is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI YAOJIA MEDICAL TECH CO LTD
- Filing Date
- 2025-05-19
- Publication Date
- 2026-05-01
AI Technical Summary
Existing liquid application needles tend to produce jet-like sprays when spraying liquids or colloids, resulting in excessive dispensing and difficulty in achieving moderate dispensing, thus failing to achieve uniform application.
A liquid application needle was designed, which is connected to a glue supply device through a connecting component. The glue comes into contact with the liquid passage, the conical groove and the straight section, and then penetrates into the straight section. It is then applied through the conical section, and the glue is discharged in a gentle manner. The glue flows into the liquid collection tank along the spiral groove, which enables rapid replenishment.
It achieves gentle dispensing and uniform application of the colloid, avoiding spray-like application, and is suitable for industrial production and medical application, ensuring uniform application.
Smart Images

Figure CN224181196U_ABST
Abstract
Description
A liquid application needle Technical Field
[0001] This utility model relates to the field of application needle technology, and in particular to a liquid application needle. Background Technology
[0002] Liquid application needles, also known as glue gun heads, are common parts in industrial production used for applying glue and liquids.
[0003] Chinese patent application number 2018211639597 discloses a glue applicator head, which includes a barrel, a connector, and a nozzle. The connector includes a first connecting portion for connecting to the barrel, a second connecting portion for connecting to the nozzle, and an elastic portion connecting the first connecting portion and the second connecting portion.
[0004] When the above-mentioned glue gun head sprays liquid or glue, it is easy to produce a jet-like spray of liquid or glue, resulting in excessive spraying and excessive glue output, making it difficult to achieve moderate glue output. Therefore, we have proposed a liquid application needle. Summary of the Invention
[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a liquid application needle. This needle connects to a glue supply device via a connecting assembly. The glue flows along a liquid channel, a conical channel, and a straight section, then penetrates the straight section and is transported to the bottom of the conical section. Application is then achieved through the conical section, with a gentle dispensing process. The glue flows along a spiral channel into a collection tank. After application through the conical section, the glue in the collection tank quickly seeps into the conical section and continues to flow into the collection tank along the spiral channel, achieving rapid replenishment of the glue.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A liquid application needle, comprising:
[0008] Connector;
[0009] A conical needle is installed below the connecting seat. The connecting seat has a liquid passage groove, and the conical needle has a conical groove. The conical groove has a threaded section, and the threaded section has a spiral groove. A liquid collection groove is provided below the conical needle. The liquid passage groove and the conical groove are connected.
[0010] An applicator head, wherein the applicator head is disposed within the conical needle head;
[0011] A connecting component, which is mounted on the connector.
[0012] The applicator head includes:
[0013] A straight section, which is inserted into the tapered groove and the threaded section;
[0014] A tapered section is installed below the straight section and is located outside the tapered needle.
[0015] The connection component includes:
[0016] A spiral block, which is mounted on the connecting seat.
[0017] The straight section is made of multiple first nylon ropes wound together, the tapered section is made of multiple second nylon ropes wound together, and the straight section has an annular rope buckle on the outside.
[0018] The connector is equipped with reinforcing ribs at both ends.
[0019] The connector and the conical needle are made of PP material.
[0020] The beneficial effects of this utility model are as follows:
[0021] (1) This utility model is connected to the glue supply equipment through the connecting component. The glue comes into contact with the straight section along the liquid passage, the conical groove and the straight section. Then the glue penetrates into the straight section and is then transported to the bottom of the conical section. At this time, the glue can be applied through the conical section to slow down the glue discharge.
[0022] (2) In this invention, the colloid flows into the collection tank along the spiral groove. After the colloid is applied to the conical section, the colloid in the collection tank quickly penetrates into the conical section to achieve the supply of colloid. The colloid continues to flow into the collection tank along the spiral groove to achieve the rapid replenishment of colloid.
[0023] (3) This utility model does not produce spraying when used in industrial coating and medical application, and can slow down the glue dispensing to ensure even application. Attached Figure Description
[0024] Figure 1 is a schematic diagram of the overall structure of this utility model;
[0025] Figure 2 is a schematic cross-sectional view of the present invention.
[0026] Figure 3 is a schematic diagram of the spiral groove structure of this utility model;
[0027] Figure 4 is an enlarged schematic diagram of point A in Figure 2 of this utility model;
[0028] Figure 5 is a schematic diagram of the application head structure of this utility model.
[0029] Figure Labels
[0030] 1. Connecting seat; 10. Liquid passage groove; 11. Reinforcing rib; 2. Conical needle; 20. Conical groove; 21. Threaded section; 211. Spiral groove; 22. Liquid collection groove; 3. Application head; 300. Annular rope buckle; 31. Straight section; 311. First nylon rope; 32. Conical section; 321. Second nylon rope; 4. Connecting assembly; 41. Spiral block. Detailed Implementation
[0031] 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.
[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0034] Example: As shown in Figures 1-5, this example provides a liquid application needle, including: a connecting seat 1; a conical needle 2, which is installed below the connecting seat 1, with a liquid passage groove 10 inside the connecting seat 1 and a conical groove 20 inside the conical needle 2; a threaded section 21 inside the conical groove 20, with a spiral groove 211 on the threaded section 21, and a liquid collection groove 22 below the conical needle 2; an application head 3, which is disposed inside the conical needle 2; and a connecting assembly 4, which is installed on the connecting seat 1, and the liquid passage groove 10 and the conical groove 20 are connected.
[0035] The applicator head 3 includes: a straight section 31, which is inserted into the conical groove 20 and the threaded section 21; and a conical section 32, which is installed below the straight section 31 and is located outside the conical needle head 2.
[0036] The connecting component 4 includes a spiral block 41, which is mounted on the connecting seat 1.
[0037] The straight section 31 is formed by winding multiple first nylon ropes 311, and the tapered section 32 is formed by winding multiple second nylon ropes 321. The straight section 31 is provided with an annular rope buckle 300 on its outer side. The first nylon ropes 311 and the second nylon ropes 321 are preferably made of 0.03mm nylon thread. The connecting seat 1 is provided with reinforcing ribs 11 at both ends.
[0038] Connector 1 and conical needle 2 are made of PP material.
[0039] The liquid application needle is connected to the adhesive supply device through the connecting component 4. The adhesive comes into contact with the straight section 31 along the liquid passage 10 and the conical groove 20. Then the adhesive penetrates into the straight section 31 and is then transported to the bottom of the conical section 32. At this time, the adhesive can be applied through the conical section 32, and the adhesive is dispensed in a gentle manner.
[0040] It should be noted that: the colloid flows into the collection tank 22 along the spiral groove 211. After the colloid is applied to the conical section 32, the colloid in the collection tank 22 quickly seeps into the conical section 32 to achieve the supply of colloid. The colloid continues to flow into the collection tank 22 along the spiral groove 211 to achieve the rapid replenishment of colloid. The liquid material absorption space ensures that the entire brush head is evenly wetted and evenly coated.
[0041] The ring-shaped cord buckle 300 is secured in the spiral groove 211, enhancing the fixing effect between the straight section 31 and the conical needle 2.
[0042] Liquid application needles are used in industrial adhesive application and medical drug application. They do not produce a spraying pattern and can gently dispense adhesive, resulting in even application. The innovation lies in the integrated dispensing and brush needle, which does not produce a spraying pattern and can gently dispense adhesive.
[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A liquid application needle, characterized in that, include: Connecting seat (1); conical needle (2), the conical needle (2) is installed below the connecting seat (1), the connecting seat (1) has a liquid passage groove (10), the conical needle (2) has a conical groove (20), the liquid passage groove (10) and the conical groove (20) are connected; the conical groove (20) has a threaded section (21), the threaded section (21) has a spiral groove (211), the conical needle (2) has a liquid collection groove (22) below it; applicator (3), the applicator (3) is located inside the conical needle (2); connecting assembly (4), the connecting assembly (4) is installed on the connecting seat (1).
2. The liquid application needle according to claim 1, characterized in that, The applicator (3) includes: a straight section (31) inserted into the conical groove (20) and the threaded section (21); and a conical section (32) installed below the straight section (31) and located outside the conical needle (2).
3. A liquid application needle according to claim 1, characterized in that, The connecting component (4) includes a spiral block (41) which is mounted on the connecting seat (1).
4. A liquid application needle according to claim 2, characterized in that, The straight section (31) is formed by winding multiple first nylon ropes (311), and the conical section (32) is formed by winding multiple second nylon ropes (321). The straight section (31) is provided with an annular rope buckle (300) on the outside.
5. A liquid application needle according to claim 1, characterized in that, The connecting seat (1) is provided with reinforcing ribs (11) at both ends.
6. A liquid application needle according to claim 1, characterized in that, The connector (1) and the conical needle (2) are made of PP material.