Dispensing nozzle

Abstract

The utility model discloses an adhesive dispensing nozzle which comprises an adhesive dispensing main body, an adhesive inlet is formed in the upper end of the adhesive dispensing main body, a pressure maintaining cavity and a plurality of adhesive dispensing channels are arranged in the adhesive dispensing main body, the pressure maintaining cavity is arranged above the adhesive dispensing channels and communicated with the adhesive inlet, and the adhesive dispensing channels are communicated with the pressure maintaining cavity. And the dispensing channels are through holes penetrating downwards from the pressure maintaining cavity, the multiple dispensing channels are arranged in parallel at intervals, and dispensing openings are formed in the bottoms of the dispensing channels. According to the glue dispensing nozzle, the glue dispensing main body, the pressure maintaining cavity arranged in the glue dispensing main body and the plurality of glue dispensing channels are designed, so that the glue dispensing nozzle is integrally arranged, the structure is simpler, in addition, the glue dispensing nozzle with multiple pin holes is formed through the arrangement of the plurality of glue dispensing channels, and the glue dispensing efficiency is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of dispensing, and in particular to a dispensing nozzle. Background Technology

[0002] Currently, most FPC dispensing anti-tampering equipment uses a single-needle nozzle, which requires planning the dispensing path to control the dispensing stroke. This results in a long dispensing time. Moreover, in order to achieve more uniform dispensing, the dispensing rate is often sacrificed, which further prolongs the dispensing completion time and greatly reduces efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a dispensing nozzle to solve the problem of low efficiency of existing single-needle nozzles.

[0004] To achieve the above objectives, this utility model provides a dispensing nozzle, comprising a dispensing body, an inlet at the upper end of the dispensing body, a pressure-holding cavity and a plurality of dispensing channels inside the dispensing body, the pressure-holding cavity being located above the dispensing channels and communicating with the inlet, the dispensing channels being through holes extending downward from the pressure-holding cavity, the plurality of dispensing channels being spaced apart from each other and arranged parallel to each other, the bottom of each dispensing channel being a dispensing port, and the plurality of dispensing ports being located on the bottom surface of the dispensing body.

[0005] Preferably, the dispensing body is U-shaped and includes a first plate, a second plate parallel to the first plate, and a third plate connecting the first plate and the second plate. The first plate, the second plate, and the third plate are all arranged vertically. The glue inlet is located at the upper middle part of the third plate. The pressure-holding cavity includes a first cavity, a second cavity, and a third cavity that are interconnected. The first cavity is located at the upper part of the first plate, the second cavity is located at the upper part of the second plate, and the third cavity is located at the upper part of the third plate. The third cavity is connected to the glue inlet.

[0006] Preferably, the lower parts of the first plate, the second plate, and the third plate are all solid plates, and the plurality of dispensing channels penetrate the solid plates in the vertical direction and form a U-shaped structure with the plurality of dispensing openings.

[0007] Preferably, the first cavity has a first dispensing port into the first cavity, the second cavity has a second dispensing port into the second cavity, the height of the vertical cross-section of the first cavity gradually decreases from the first dispensing port toward the direction away from the first dispensing port, the height of the vertical cross-section of the second cavity gradually decreases from the second dispensing port toward the direction away from the second dispensing port, and the height of the vertical cross-section of the third cavity gradually decreases from the dispensing port toward the direction away from the dispensing port.

[0008] Preferably, the height of the vertical section of the first dispensing port and the height of the vertical section of the second dispensing port are the same and both are the first height, and the height of the vertical section of the edge of the second cavity away from the first dispensing port and the height of the vertical section of the third cavity away from the edge of the second dispensing port are the same and both are the second height.

[0009] Preferably, the second height is greater than or equal to one-third of the first height and less than or equal to one-half of the first height.

[0010] Preferably, the width of the cross-section of the first cavity in the vertical direction gradually increases from the first dispensing port towards the direction away from the first dispensing port, the width of the cross-section of the second cavity in the vertical direction gradually increases from the second dispensing port towards the direction away from the second dispensing port, and the width of the cross-section of the third cavity in the vertical direction gradually increases from the glue inlet towards the direction away from the glue inlet.

[0011] Preferably, the dispensing channel is a vertical circular channel, and adjacent dispensing channels have the same preset interval.

[0012] Preferably, the dispensing nozzle has a first diameter, and the preset interval is equal to two-thirds of the first diameter.

[0013] Preferably, the dispensing port is used to introduce adhesive, the adhesive entering at a speed greater than or equal to 0.4 ml / s and less than or equal to 0.6 ml / s, and the adhesive moving at a speed greater than or equal to 2 mm / s and less than or equal to 100 mm / s.

[0014] Compared with the prior art, the present invention's dispensing nozzle integrates a dispensing body, a pressure-holding cavity within the dispensing body, and several dispensing channels, resulting in a simpler structure. Furthermore, the arrangement of several dispensing channels forms a multi-needle dispensing nozzle, effectively improving dispensing efficiency. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the FPC board corresponding to the dispensing nozzle of this utility model.

[0016] Figure 2 This is a three-dimensional structural diagram of the dispensing nozzle of this utility model.

[0017] Figure 3 This is a top view of the dispensing nozzle of this utility model.

[0018] Figure 4 This is a bottom view of the dispensing nozzle of this utility model.

[0019] Figure 5 This is a cross-sectional view of the third plate in the dispensing nozzle of this utility model.

[0020] Figure 6 This is a cross-sectional view of the first plate in the dispensing nozzle of this utility model.

[0021] Figure 7 This is a cross-sectional view of the second plate in the dispensing nozzle of this utility model. Detailed Implementation

[0022] To explain in detail the technical content, structural features, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0023] like Figures 1 to 7 As shown, this utility model embodiment provides a dispensing nozzle, including a dispensing body 1, an inlet 2 at the upper end of the dispensing body 1, a pressure-holding cavity and a plurality of dispensing channels 14 inside the dispensing body 1, the pressure-holding cavity being located above the dispensing channels 14 and communicating with the inlet 2, the dispensing channels 14 being through holes extending downward from the pressure-holding cavity, the plurality of dispensing channels 14 being spaced apart from each other and arranged parallel to each other, the bottom of each dispensing channel 14 being a dispensing port 141, and the plurality of dispensing ports 141 being located on the bottom surface of the dispensing body 1.

[0024] Specifically, in fields such as POS machines, PDAs, PADs, mobile phones, laptops, televisions, and monitors, FPC dispensing is involved to better bond the FPC board 10 to the circuit board. Generally, dispensing is done on the edge of the FPC board 10. The dispensing path can be preset according to the shape of the FPC board 10, and the dispensing nozzle 20 can be designed according to the shape of the dispensing path. UV glue and other adhesives enter the pressure-holding cavity through the glue inlet 2 to make the pressure of the adhesive in various positions in the pressure-holding cavity consistent, thereby making the pressure of the adhesive flowing out of the dispensing port 141 consistent and the dispensing more uniform.

[0025] The dispensing nozzle 20 of this utility model is designed with a dispensing body 1, a pressure-holding cavity and several dispensing channels 14 provided in the dispensing body 1, so that the dispensing nozzle 20 is integrated in one piece and the structure is simpler. In addition, the arrangement of several dispensing channels 14 forms a multi-pinhole dispensing nozzle, which effectively improves the dispensing efficiency.

[0026] In this embodiment of the invention, the dispensing body 1 is U-shaped and includes a first plate 11, a second plate 12 parallel to the first plate 11, and a third plate 13 connecting the first plate 11 and the second plate 12. The first plate 11, the second plate 12, and the third plate 13 are all arranged vertically. The glue inlet 2 is located at the upper center of the third plate 13. The pressure-holding cavity includes a first cavity 111, a second cavity 121, and a third cavity 131 that are interconnected. The first cavity 111 is located on the upper part of the first plate 11, the second cavity 121 is located on the upper part of the second plate 12, and the third cavity 131 is located on the upper part of the third plate 13. The third cavity 131 is connected to the glue inlet 2. Specifically, as shown... Figure 1 As shown, the FPC board 10 is typically square in shape, with adhesive application paths designed along three of its sides. The specific adhesive application paths are as follows: Figure 1 As shown by the middle arrow, the dispensing path is U-shaped. To correspond with this dispensing path, as follows: Figures 2 to 7 As shown, the dispensing body 1 can be designed with a U-shaped structure. UV glue and other adhesives enter from the glue inlet 2. The adhesive is squeezed from the glue inlet 2 into the third cavity 131 by gas pressure, and then dispersed into the first cavity 111 and the second cavity 121 on both sides. Then the adhesive is squeezed out from the dispensing port 141 of the dispensing channel 14 to complete the dispensing. This allows the dispensing nozzle 20 to dispense the FPC board 10 in one go without moving the dispensing nozzle 20, which greatly improves the dispensing efficiency. Of course, the specific structure of the dispensing body 1 can be set according to actual needs, and it can also be used in other application scenarios besides FPC boards.

[0027] In this embodiment of the invention, the lower parts of the first plate 11, the second plate 12, and the third plate 13 are all solid plates. A plurality of dispensing channels 14 penetrate the solid plates in the vertical direction, forming a plurality of dispensing openings 141 in a U-shape. Specifically, the first plate 11, the second plate 12, and the third plate 13 can be integrally molded U-shaped structures. The upper parts of the first plate 11, the second plate 12, and the third plate 13 are all hollow structures to form a first cavity 111, a second cavity 121, and a third cavity 131, respectively. The lower parts of the first plate 11, the second plate 12, and the third plate 13 are all solid plates. A plurality of dispensing openings 141 can be formed simply by opening through holes in the solid plates, a very ingenious design.

[0028] In this embodiment of the present invention, the first cavity 111 has a first dispensing port 113 into the first cavity 111, the second cavity 121 has a second dispensing port 123 into the second cavity 121, the height of the cross section of the first cavity 111 in the vertical direction gradually decreases from the first dispensing port 113 in the direction away from the first dispensing port 113, the height of the cross section of the second cavity 121 in the vertical direction gradually decreases from the second dispensing port 123 in the direction away from the second dispensing port 123, and the height of the cross section of the third cavity 131 in the vertical direction gradually decreases from the glue inlet 2 in the direction away from the glue inlet 2. Specifically, since the glue inlet 2 is located at the upper middle part of the third plate 13, the glue will flow to both sides after entering the third cavity 131 from the glue inlet 2. In order to avoid pressure loss during the glue flow process, the height of the cross section of the third cavity 131 in the vertical direction can be set to gradually decrease from the glue inlet 2 away from the glue inlet 2. That is, the thickness of the third upper wall 132 at the top of the third plate 13 in the vertical direction can be set to gradually increase from the glue inlet 2 away from the glue inlet 2, thereby achieving pressure holding. The adhesive flows from the third cavity 131 to both sides and flows into the first cavity 111 and the second cavity 121 respectively. In order to avoid pressure loss during the flow of adhesive in the first cavity 111 and the second cavity 121, the height of the vertical section of the first cavity 111 can be set to gradually decrease from the first dispensing port 113 away from the first dispensing port 113. That is, the thickness of the first upper wall 112 of the first plate 11 in the vertical direction can be set to gradually increase from the first dispensing port 113 away from the first dispensing port 113. Similarly, the height of the vertical section of the second cavity 121 can be set to gradually decrease from the second dispensing port 123 away from the second dispensing port 123. That is, the thickness of the second upper wall 122 of the upper part of the second plate 12 in the vertical direction can be set to gradually increase from the second dispensing port 123 away from the second dispensing port 123, thereby achieving pressure holding.

[0029] Furthermore, the height of the vertical section of the first dispensing port 113 is the same as the height of the vertical section of the second dispensing port 123, both being a first height a. The height of the vertical section of the edge of the second cavity 121 away from the first dispensing port 113 and the height of the vertical section of the edge of the third cavity 131 away from the second dispensing port 123 are the same as the second height b. The second height b is greater than or equal to one-third of the first height a and less than or equal to one-half of the first height a, which makes the pressure holding effect of the first cavity 111 and the second cavity 121 better.

[0030] In this embodiment of the invention, the width of the cross-section of the first cavity 111 in the vertical direction gradually increases from the first dispensing port 113 toward the direction away from the first dispensing port 113; the width of the cross-section of the second cavity 121 in the vertical direction gradually increases from the second dispensing port 123 toward the direction away from the second dispensing port 123; and the width of the cross-section of the third cavity 131 in the vertical direction gradually increases from the dispensing port 2 toward the direction away from the dispensing port 2, thereby ensuring that the pressure in the pressure-holding cavity is approximately the same.

[0031] In this embodiment of the invention, the dispensing channel 14 is a vertical circular channel, and adjacent dispensing channels 14 have the same preset interval. Specifically, the dispensing orifice 141 has a first diameter d, and the preset interval c is equal to two-thirds of the first diameter d, ensuring that the glue overflowing to both sides can just overlap, achieving uniform dispensing. This design is ingenious.

[0032] In this embodiment of the present invention, the dispensing port 141 is used to introduce glue, the glue entering speed is greater than or equal to 0.4 ml / s and less than or equal to 0.6 ml / s, and the glue moving speed is greater than or equal to 2 mm / s and less than or equal to 100 mm / s.

[0033] When the dispensing nozzle 20 of this embodiment reaches the holding pressure state, dispensing is performed, which can achieve rapid dispensing within 1 second, reduce the time consumption caused by the single-needle nozzle moving along the dispensing path, and effectively improve dispensing efficiency.

[0034] This utility model embodiment solves the problem of excessive assembly time caused by FPC dispensing in electronic product terminal equipment such as POS machines and PADs. This utility model embodiment has a simple structure, fast dispensing speed, and short time consumption, which improves the dispensing speed and greatly enhances the assembly speed of electronic equipment. In addition, it achieves uniform dispensing from a functional perspective, avoiding the occurrence of glue breakage, and can meet the needs of rapid dispensing in electronic product terminal equipment such as POS machines and PADs.

[0035] The above-disclosed examples are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent changes made in accordance with the scope of the present utility model application shall still fall within the scope of the present utility model.

Claims

1. A dispensing nozzle, characterized in that, The device includes a dispensing body, with an inlet at its upper end. The dispensing body has a pressure-holding cavity and several dispensing channels inside. The pressure-holding cavity is located above the dispensing channels and communicates with the inlet. Each dispensing channel is a through-hole extending downwards from the pressure-holding cavity. The several dispensing channels are spaced apart and arranged parallel to each other. The bottom of each dispensing channel is a dispensing opening, and all dispensing openings are located on the bottom surface of the dispensing body.

2. The dispensing nozzle as described in claim 1, characterized in that, The dispensing body is U-shaped and includes a first plate, a second plate parallel to the first plate, and a third plate connecting the first plate and the second plate. The first plate, the second plate, and the third plate are all arranged vertically. The glue inlet is located at the upper middle part of the third plate. The pressure holding cavity includes a first cavity, a second cavity, and a third cavity that are interconnected. The first cavity is located at the upper part of the first plate, the second cavity is located at the upper part of the second plate, and the third cavity is located at the upper part of the third plate. The third cavity is connected to the glue inlet.

3. The dispensing nozzle as described in claim 2, characterized in that, The lower parts of the first plate, the second plate, and the third plate are all solid plates, and the plurality of dispensing channels penetrate the solid plates in the vertical direction and form a U-shaped structure with the plurality of dispensing orifices.

4. The dispensing nozzle as described in claim 2, characterized in that, The first cavity has a first dispensing port into the first cavity, the second cavity has a second dispensing port into the second cavity, the height of the vertical cross-section of the first cavity gradually decreases from the first dispensing port toward the direction away from the first dispensing port, the height of the vertical cross-section of the second cavity gradually decreases from the second dispensing port toward the direction away from the second dispensing port, and the height of the vertical cross-section of the third cavity gradually decreases from the dispensing port toward the direction away from the dispensing port.

5. The dispensing nozzle as described in claim 4, characterized in that, The height of the vertical section of the first dispensing port and the height of the vertical section of the second dispensing port are the same and both are the first height. The height of the vertical section of the edge of the second cavity away from the first dispensing port and the height of the vertical section of the third cavity away from the edge of the second dispensing port are the same and both are the second height.

6. The dispensing nozzle as described in claim 5, characterized in that, The second height is greater than or equal to one-third of the first height and less than or equal to one-half of the first height.

7. The dispensing nozzle as described in claim 4, characterized in that, The width of the first cavity in the vertical direction gradually increases from the first dispensing port towards the direction away from the first dispensing port; the width of the second cavity in the vertical direction gradually increases from the second dispensing port towards the direction away from the second dispensing port; and the width of the third cavity in the vertical direction gradually increases from the glue inlet towards the direction away from the glue inlet.

8. The dispensing nozzle as described in claim 1, characterized in that, The dispensing channel is a vertical circular channel, and there is the same preset interval between two adjacent dispensing channels.

9. The dispensing nozzle as described in claim 8, characterized in that, The dispensing nozzle has a first diameter, and the preset interval is equal to two-thirds of the first diameter.

10. The dispensing nozzle as described in claim 1, characterized in that, The dispensing port is used to introduce adhesive, the entry speed of the adhesive is greater than or equal to 0.4 ml / s and less than or equal to 0.6 ml / s, and the movement speed of the adhesive is greater than or equal to 2 mm / s and less than or equal to 100 mm / s.

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