Lamp strip dispensing needle
By improving the structure of the lamp strip dispensing needle and adopting multi-stage filtration and slow flow design, the problems of glue production are solved and the flatness and aesthetics of the glue strip are improved.
Patent Information
- Application Number
- CN202421951134.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-12
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-08-12
AI Technical Summary
The glue output of existing lamp strip dispensing needles is unstable, resulting in uneven width of the glue strip and bubbles, which affects aesthetics and flatness.
A light strip dispensing needle is designed, including a dispensing needle holder and a dispensing needle body, with a first and second flow path inside, equipped with a first and second filter plates, a shaft spirocarpod and a flow guide. Through multi-stage filtration and slow flow, the bubbles in the glue are reduced and the amount of glue output is stable.
The stability of the glue output amount is achieved, and the appearance of the glue strip on the light strip is improved.
Smart Images
Figure CN223083140U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of strip light dispensing, and more specifically, to a strip light dispensing needle head. Background Art
[0002] When manufacturing strip lights (such as LED strip lights), it is often necessary to coat a rubber strip on the strip light to achieve the encapsulation of lamp beads. Generally, a dispensing needle head is used in cooperation with a corresponding dispensing machine to complete the dispensing operation. Through high-precision motor control and programmable control, automatic positioning and precise dispensing are achieved, which are effectively used in the potting, bonding and other processes of strip light products to ensure the quality and stability of strip light products. However, since the inside of the existing dispensing needle head is directly penetrated for glue outflow, it is easy to cause unstable glue outflow, resulting in uneven width of the outflowing glue strip in a wavy section during molding, and there are many bubbles in the outflowing glue, and the flatness and aesthetics of the glue strip are insufficient. Therefore, it is urgent to improve the internal structure of the dispensing needle head. Summary of the Utility Model
[0003] The technical problem to be solved by the utility model is to provide a strip light dispensing needle head in view of the above-mentioned defects of the prior art.
[0004] The technical solution adopted by the utility model to solve its technical problems is: a strip light dispensing needle head, including a dispensing needle seat and a dispensing needle body. The dispensing needle seat is provided with a glue injection hole. The upper end of the dispensing needle body is arranged in the dispensing needle seat and is located below the glue injection hole. The lower end of the dispensing needle body is located outside the dispensing needle seat and below the dispensing needle seat. A first glue flow channel and a second glue flow channel are arranged in the dispensing needle body. The first glue flow channel is respectively communicated with the glue injection hole and the second glue flow channel. The lower end of the second glue flow channel is provided with a glue outlet. A first filter plate is arranged in the first glue flow channel. The inner peripheral side wall on the upper side of the second glue flow channel is set as an inclined surface. A second filter plate is arranged in the second glue flow channel. A shafted spiral body is arranged on the second filter plate. A diversion part with an inverted V-shaped or triangular cross-sectional shape is arranged at the upper end of the shafted spiral body. The diversion part is located below the first filter plate. There is a glue inlet gap between the lower edge of the diversion part and the inclined surface of the second glue flow channel.
[0005] In some embodiments, the shafted spiral body is composed of a vertical shaft and spiral blades arranged on the vertical shaft. The lower end of the vertical shaft is arranged at the central position of the second filter plate. The diversion part is arranged at the upper end of the vertical shaft. There is a gap between the lower end of the spiral blade and the second filter plate. The side edge of the spiral blade is closely attached to the inner peripheral side wall of the second glue flow channel.
[0006] In some embodiments, a depression is formed on the surface of the lower end of the dispensing needle body. The glue outlet penetrates through the middle of the depression.
[0007] In some embodiments, two notches are respectively formed on the outer peripheral side wall of the lower end of the dispensing needle body where the depression is formed, and the two notches are arranged corresponding to each other front and back.
[0008] In some embodiments, the concave surface of the depression is arc-shaped.
[0009] In some embodiments, a plurality of first filtering through holes are formed on the first filter plate, a plurality of second filtering through holes are formed on the second filter plate, and the inner diameter of the first filtering through holes is larger than the inner diameter of the second filtering through holes.
[0010] In some embodiments, the flow guiding member is integrally connected by two inclined plates.
[0011] In some embodiments, the flow guiding member is an inverted cone.
[0012] In some embodiments, the inner diameter of the glue injection hole is the same as the inner diameter of the first glue flow channel.
[0013] In some embodiments, the glue inlet gap is 10 ± 2 mm.
[0014] The beneficial effects of the present utility model are as follows: Different from the prior art, when using the glue dispensing needle head of the present utility model for the light strip, when the glue enters the first glue flow channel of the dispensing needle body through the glue injection hole, the relatively many air bubbles existing in the glue can be filtered out by the first filter plate. Then, when the glue enters the second glue flow channel of the dispensing needle body, the flow guiding member makes the glue flow downward into the glue inlet gap, and the shaft spiral body can play a role in slowing down the flow of the glue to a certain extent. Then, the remaining air bubbles in the glue are further filtered by the second filter plate, further reducing the air bubbles carried in the glue. Finally, the glue flows out through the glue outlet to be coated on the light strip, which can make the glue output more stable, and further make the appearance of the glue strip on the light strip more flat and beautiful. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a schematic structural diagram of the glue dispensing needle head for the light strip in an embodiment of the present utility model;
[0016] Figure 2 is a schematic bottom surface structure diagram of the dispensing needle body in an embodiment of the present utility model;
[0017] Figure 3 is a schematic structural diagram of the first filter plate in an embodiment of the present utility model;
[0018] Figure 4 is a schematic structural diagram of the second filter plate in an embodiment of the present utility model;
[0019] Figure 5 is another schematic structural diagram of the glue dispensing needle head for the light strip in an embodiment of the present utility model;
[0020] Names and serial numbers of the markings in the figure: dispensing needle base - 1; dispensing needle body - 2; glue injection hole - 101; first glue flow channel - 21; second glue flow channel - 22; glue outlet - 201; first filter plate - 3; second filter plate - 4; shafted helix - 5; flow guide - 6; glue inlet gap - 7; vertical shaft - 51; helical blade - 52; depression - 20; notch - 202; first filter through hole - 301; second filter through hole - 401. Specific embodiments
[0021] The terms "first", "second", "third", "fourth", etc. in the specification, claims and drawings of the present utility model are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products or devices.
[0022] Referring to "embodiment" herein means that a specific feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present utility model. The phrase appearing at various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0023] "Plurality" means two or more. "And / or" describes the association relationship of associated objects and indicates that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.
[0024] Moreover, the terms indicating directions such as "up, down, front, back, left, right, upper end, lower end" etc. are all referenced based on the attitude position of the device or equipment described in this solution during normal use.
[0025] In order to make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below. Obviously, the described embodiments are partial embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the protection scope of the present utility model.
[0026] Embodiments of the present utility model are as followsFigures 1 to 4 As shown in Figures 1 to 4 , a dispensing needle head for a light strip includes a dispensing needle seat 1 and a dispensing needle body 2. The dispensing needle seat 1 is provided with a glue injection hole 101. The upper end of the dispensing needle body 2 is disposed within the dispensing needle seat 1 and is located below the glue injection hole 101. The lower end of the dispensing needle body 2 is located outside the dispensing needle seat 1 and is below the dispensing needle seat 1. A first glue flow channel 21 and a second glue flow channel 22 are provided within the dispensing needle body 2. The first glue flow channel 21 communicates with the glue injection hole 101 and the second glue flow channel 22 respectively. A glue outlet 201 is provided at the lower end of the second glue flow channel 22. A first filter plate 3 is provided within the first glue flow channel 21. The inner peripheral side wall on the upper side of the second glue flow channel 22 is set as an inclined surface. A second filter plate 4 is provided within the second glue flow channel 22. A shafted spiral body 5 is provided on the second filter plate 4. A diversion member 6 with a cross-sectional shape of an inverted V or a triangle is provided at the upper end of the shafted spiral body 5. The diversion member 6 is located below the first filter plate 3. There is a glue inlet gap 7 between the lower edge of the diversion member 6 and the inclined surface of the second glue flow channel 22.
[0027] Among them, the dispensing needle seat 1 is used to be installed on a dispensing device equipped with a dispensing valve, such as a dispensing machine. The dispensing needle seat 1 cooperates with the dispensing valve to enable the glue to enter the glue injection hole 101, and then through the glue injection hole 101, the glue enters the first glue flow channel 21 of the dispensing needle body 2. The first filter plate 3 can filter out more air bubbles existing in the glue. Then when the glue enters the second glue flow channel 22 of the dispensing needle body 2, the diversion member 6 enables the glue to flow downward into the glue inlet gap 7. The shafted spiral body 5 can play a role in slowing down the flow of the glue to a certain extent. The second filter plate 4 further filters the remaining air bubbles in the glue, further reducing the air bubbles carried in the glue. Finally, the glue flows out through the glue outlet 201 to be coated on the light strip, which can make the glue output more stable, and thus make the appearance of the glue strip on the light strip more flat and beautiful.
[0028] Specifically, in this embodiment, the shafted spiral body 5 is composed of a vertical shaft 51 and spiral blades 52 provided on the vertical shaft 51. The lower end of the vertical shaft 51 is disposed at the central position of the second filter plate 4. The vertical shaft 51 mainly plays a role in supporting the diversion member 6 and the spiral blades 52. When glue contacts the spiral blades 52 and flows downward, the spiral blades 52 can play a role in slowing down the flow of the glue to a certain extent.
[0029] Among them, the diversion member 6 is provided at the upper end of the vertical shaft 51. There is a gap between the lower end of the spiral blades 52 and the second filter plate 4 to facilitate the glue to flow through the second filter plate 4 smoothly. The side edges of the spiral blades 52 are closely attached to the inner peripheral side wall of the second glue flow channel 22, so that the glue flowing into the second glue flow channel 22 can fully pass through the spiral blades 52 to be subjected to the flow slowing effect.
[0030] Specifically, in this embodiment, a recess 20 is formed on the surface of the lower end of the dispensing needle body 2, and the glue outlet 201 penetrates through the middle of the recess 20. The inner concave surface of the recess 20 is arc-shaped, providing a reasonable space for glue dispensing to effectively prevent the glue from overflowing instantaneously. Further, two notches 202 are respectively formed on the outer peripheral side wall of the lower end of the dispensing needle body 2 where the recess 20 is formed. The two notches 202 are arranged corresponding to each other front and back, and the shapes of the two notches 202 are both inverted U-shaped. When dispensing glue, when the dispensed glue is coated on the lamp strip according to the dispensing direction, the setting of the notches 202 helps the glue strip to be formed more smoothly, ensuring the consistency of the appearance of the glue strip.
[0031] Wherein, the flow guiding member 6 is integrally connected by two inclined plates; the connection part of the two inclined plates is rounded, and the included angle formed between the two inclined plates is greater than 90° and less than 180°. In some other embodiments, as Figure 5 shown in, the flow guiding member 6 is an inverted cone, making the flow guiding range more sufficient.
[0032] Wherein, the inner diameter of the glue injection hole 101 is the same as that of the first glue flow channel 21; the cross-sectional shapes of the glue injection hole 101 and the first glue flow channel 21 are both cylindrical. The cross-sectional shape of the second glue flow channel 22 is funnel-shaped. The feeding gap 7 is 10 ± 2 mm.
[0033] Specifically, in this embodiment, a plurality of first filtering through holes 301 are formed on the first filter plate 3, and a plurality of second filtering through holes 401 are formed on the second filter plate 4. The inner diameter of the first filtering through holes 301 is larger than that of the second filtering through holes 401. The density of the second filtering through holes 401 arranged on the second filter plate 4 is greater than the density of the first filtering through holes 301 arranged on the first filter plate 3. The second filter plate 4 is at a certain distance from the glue outlet 201, such as 7 or 8 mm. Both the first filter plate 3 and the second filter plate 4 are fixedly connected to the dispensing needle body 2, and the way of fixed connection is, for example, integral connection, etc. In actual application, it can be designed and selected according to actual application requirements. This is only an example for illustration here.
[0034] In this embodiment, a plurality of glue injection holes 101 are provided. The plurality of glue injection holes 101 are arranged side by side at equal intervals on the dispensing needle base 1, and the number of the dispensing needle bodies 2 is the same as the number of the glue injection holes 101, and the plurality of dispensing needle bodies 2 are arranged in one-to-one correspondence with the plurality of glue injection holes 101 to meet the requirements of multi-point dispensing.
[0035] It should be noted that the dispensing equipment with a dispensing valve is relatively existing. In actual application, it can be designed and selected according to actual application requirements, and no specific limitation is made in this embodiment.
[0036] It should be understood that those of ordinary skill in the art can make improvements or modifications based on the above description, and all such improvements and modifications shall fall within the scope of protection of the appended claims of this utility model.
Claims
1. A dispensing needle head for a light strip, comprising a dispensing needle base and a dispensing needle body, characterized in that: The dispensing needle base is provided with a glue injection hole. The upper end of the dispensing needle body is arranged inside the dispensing needle base and below the glue injection hole, and the lower end of the dispensing needle body is located outside the dispensing needle base and below the dispensing needle base. A first glue flow channel and a second glue flow channel are arranged inside the dispensing needle body. The first glue flow channel is respectively communicated with the glue injection hole and the second glue flow channel. A glue outlet is arranged at the lower end of the second glue flow channel. A first filter plate is arranged in the first glue flow channel. The inner peripheral side wall on the upper side of the second glue flow channel is set as an inclined surface. A second filter plate is arranged in the second glue flow channel. A shafted spiral body is arranged on the second filter plate. A diversion member with an inverted V-shaped or triangular cross-sectional shape is arranged at the upper end of the shafted spiral body. The diversion member is located below the first filter plate, and there is a glue inlet gap between the lower edge of the diversion member and the inclined surface of the second glue flow channel.
2. The dispensing needle for the light strip according to claim 1, wherein: The shafted spiral body is composed of a vertical shaft and spiral blades arranged on the vertical shaft. The lower end of the vertical shaft is arranged at the central position of the second filter plate, and the diversion member is arranged at the upper end of the vertical shaft. There is a gap between the lower end of the spiral blade and the second filter plate, and the side of the spiral blade is closely attached to the inner peripheral side wall of the second glue flow channel.
3. The glue - dispensing needle head for the light - strip according to claim 1, wherein: A recess is formed on the surface of the lower end of the dispensing needle body, and the glue outlet penetrates through the middle of the recess.
4. The glue - dispensing needle head for the light strip according to claim 3, characterized in that: Two notches are respectively formed on the outer peripheral side wall of the lower end of the dispensing needle body where the recess is formed, and the two notches are arranged corresponding to each other front and back.
5. The dispensing needle for the light strip according to claim 3 or 4, characterized in that: The inner concave surface of the recess is arc-shaped.
6. The dispensing needle for light strip according to claim 1, wherein: A plurality of first filter through holes are formed on the first filter plate, and a plurality of second filter through holes are formed on the second filter plate. The inner diameter of the first filter through holes is larger than the inner diameter of the second filter through holes.
7. The dispensing needle for the light strip according to claim 1, wherein: The diversion member is integrally connected by two inclined plates.
8. The glue - dispensing needle head for the light - strip according to claim 1, characterized in that: The diversion member is an inverted cone.
9. The dispensing needle for light strip according to claim 1, wherein: The inner diameter of the glue injection hole is the same as the inner diameter of the first glue flow channel.
10. The dispensing needle for the light strip according to claim 1, wherein: The glue inlet gap is 10 ± 2 mm.