Electro-spraying dispensing nozzle with multi-stage electric field correction structure

Abstract

This utility model discloses an electro-inking dispensing nozzle with a multi-level electric field correction structure, including a glue cartridge, a support assembly, and a needle. The needle is connected to the glue cartridge via a Luer connector. A needle-shaped electrode is located on the central axis of the internal flow channel of the needle, and its surface may be plated with an insulating layer or left untreated. The surface of the needle is coated with a hydrophobic or non-stick coating, at least covering the end. One end of the locking assembly is connected to the support assembly, and the other end locks the needle. A connecting plate at its cavity opening has a through hole, with the glue outlet of the needle pointing towards the through hole. An electrode ring is fixed at the lower end of the connecting plate. The support assembly also has a sensor for detecting low liquid levels in the glue cartridge. During operation, the dispensing controller provides air pressure, and the power supply output voltage forms a converging electric field. Under the action of air pressure and electric field, the glue forms a Taylor cone jet, and the secondary annular electric field generated by the electrode ring corrects and straightens the droplets. This nozzle effectively solves the problems of poor stability, slow speed, and low efficiency of traditional dispensing in side-encapsulation processes, significantly improving dispensing accuracy and speed, and ensuring product quality.

Description

Technical Field

[0001] This utility model relates to a dispensing nozzle, specifically to an electro-inking dispensing nozzle with a multi-level electric field correction structure. Background Technology

[0002] In the field of 3C display modules such as mobile phones, the market has placed higher demands on ultra-narrow bezels for mobile phones and displays.

[0003] Currently, traditional technologies such as bonding and bending processes can no longer meet the requirements of ultra-narrow bezels. To adapt to ultra-narrow bottom bezels, the technology is shifting towards side wrapping. This process does not require bending; instead, it mainly connects the electronic circuits on both sides through dispensing. Since there are no rounded corners, it can significantly reduce the size of the bottom bezel of the phone. However, traditional dispensing in side wrapping faces the following three problems: First, poor stability; fluctuations in dispensing height significantly affect the circuit bonding effect. Second, slow speed; due to the increased number of circuits, the traditional dispensing speed no longer meets production capacity requirements. Third, low efficiency; because ordinary dispensing has poor stability, it is difficult to combine it into a multi-needle dispensing method, thus leading to low efficiency.

[0004] To address the three problems mentioned above in traditional dispensing for side wrapping, an electro-inking dispensing nozzle with multi-level electric field correction is provided, suitable for side wiring overlap of display modules. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides an electro-inking dispensing nozzle with a multi-level electric field correction structure. This solves the problems of poor stability, slow speed, and low efficiency in traditional dispensing processes for side wrapping.

[0006] To solve the above technical problems, the present invention is achieved through the following solution: The present invention provides an electro-spraying dispensing nozzle with a multi-level electric field correction structure, comprising a glue cartridge for storing glue, a support assembly for fixing the glue cartridge, and a needle, wherein the needle and the glue cartridge are connected by a connector.

[0007] The internal flow channel of the needle is provided with a needle-shaped electrode;

[0008] The electro-inking dispensing nozzle also includes a locking assembly, one end of which is connected to the bracket assembly, and the other end of which can lock the needle.

[0009] The lower end of the locking assembly has a cavity, and a connecting plate is fixed to the opening of the cavity. The upper surface of the connecting plate has a groove, and the groove has a through hole. The glue outlet of the needle points to the through hole.

[0010] An electrode ring is fixed to the lower end of the connecting plate;

[0011] The electro-inking dispensing nozzle also includes a connector fixing component, one end of which is connected to the bracket assembly, and the other end of which fixes the connector.

[0012] Furthermore, the connector is a Luer connector.

[0013] Furthermore, the inner diameter of the flow channel is 0.5μm-500μm.

[0014] Furthermore, the surface of the electrode is plated with an insulating layer or has no surface treatment.

[0015] Furthermore, the electrode is located on the central axis of the internal flow channel of the needle.

[0016] Furthermore, the surface of the needle is coated.

[0017] Furthermore, the coating includes either a hydrophobic layer or a non-stick layer.

[0018] Furthermore, the coating at least covers the tip region of the needle.

[0019] Furthermore, the support assembly is also equipped with a sensor for detecting low liquid levels in the rubber cartridge.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. The stability of the electro-inking dispensing nozzle of this utility model is improved: by correcting the flight trajectory of glue droplets through a multi-level electric field, the dispensing accuracy is effectively improved, which can meet the needs of precision dispensing of the side lines of the display module.

[0022] 2. The speed of the electro-inking dispensing nozzle of this utility model is faster: the speed of glue jetting driven by the electric field is higher than that of traditional dispensing methods, which can meet the needs of multi-line dispensing.

[0023] 3. Improved stability: A stable glue supply system and precise electric field control reduce fluctuations caused by external factors during the dispensing process, ensuring the stability of dispensing height and position, and improving product quality. Attached Figure Description

[0024] Figure 1 This is a structural diagram showing the connection between the electro-inking dispensing nozzle of this utility model and the power supply and dispensing controller.

[0025] Figure 2This is a structural diagram of the electro-inking dispensing nozzle of this utility model.

[0026] Figure 3 This is another structural view of the electro-inking dispensing nozzle of this utility model.

[0027] Figure 4 for Figure 3 Enlarged view of the lower area.

[0028] Figure 5 for Figure 4 Enlarged view of the lower area.

[0029] Figure 6 This is a partial structural diagram of the needle of this utility model.

[0030] Figure 7 This is a schematic diagram of the electrical control principle of the electro-inking dispensing nozzle of this utility model.

[0031] The attached diagram is labeled as follows: 1. Glue tube; 2. Glue tube fixing bracket; 3. Side connecting block; 4. Sensor; 5. Connector fixing component; 6. Connector; 7. Locking assembly; 8. Electrode ring fixing component; 9. Needle; 10. Connecting plate; 11. Electrode ring; 12. Groove surface; 13. Through hole; 14. Electrode; 101. Glue dispensing controller; 102. Electro-inking dispensing nozzle; 103. Power supply. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present utility model. Obviously, the embodiments described in this utility model 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0033] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0034] Example 1: The specific structure of this utility model is as follows:

[0035] Please refer to the appendix. Figure 1-7 This utility model discloses an electro-inking dispensing nozzle with a multi-level electric field correction structure. The electro-inking dispensing nozzle is connected to a dispensing controller 101 through a pipeline, and its needle head is connected to a power supply 103 to form an electric field.

[0036] The electro-inking dispensing nozzle 102 includes a glue cartridge 1 for storing glue, a support assembly for fixing the glue cartridge 1, and a needle 9. The needle 9 and the glue cartridge 1 are connected by a connector 6. The glue cartridge 1 uses a standard 10cc / 5cc syringe in conjunction with a dispensing controller for glue supply.

[0037] The electro-inking dispensing nozzle also includes a connector fixing member 5, one end of which is connected to the bracket assembly, and the other end of which fixes the connector 6. The connector 6 is a Luer connector, which is a standardized micro-volume leak-free connector.

[0038] The support assembly includes a rubber tube fixing bracket 2 and a side connecting block 3. The rubber tube fixing bracket 2 has an inner circle and an outer square shape, and it is fitted around the rubber tube 1. The upper end of the side connecting block 3 is fixed to the side end of the rubber tube fixing bracket 2 by screws, and its lower end extends downward to the parallel side of the needle 9.

[0039] The connector fastener 5 is sleeved on the outside of the connector 6, and its other end is fixed to the extension of the rubber tube fixing bracket 2.

[0040] The needle tip 9 has a needle-shaped electrode 14 arranged in its internal flow channel; the inner diameter of the flow channel is 0.5μm-500μm; the electrode 14 is located on the central axis of the internal flow channel of the needle tip 9. The surface of the electrode 14 is plated with an insulating layer or has no surface treatment. The electrode 14 includes one of a gold electrode, a copper electrode, and a silver electrode.

[0041] The electro-inking dispensing nozzle also includes a locking component 7, one end of which is connected to the bracket assembly, and the other end of which can lock the needle 9.

[0042] The lower end of the locking assembly 7 has a cavity, and a connecting plate 10 is fixed at the opening of the cavity. The upper surface of the connecting plate 10 has a groove 12, and the groove 12 is provided with a through hole 13. The glue outlet of the needle 9 points to the through hole 13.

[0043] An electrode ring 11 is fixed to the lower end of the connecting plate 10. The electrode 14 inside the needle 9 is connected to a power source, and the electrode ring 11 can form an external secondary ring electric field. The electric field strength is controlled by voltage regulation. Under the combined action of air pressure and electric field, the glue in the flow channel inside the needle 9 forms a Taylor cone for spraying and dispensing. The sprayed droplets are corrected and straightened under the action of the secondary ring electric field, thereby accurately spraying the glue droplets onto the set dispensing area.

[0044] The surface of the needle 9 is coated. The coating includes either a hydrophobic layer or a non-stick layer. The coating at least covers the tip region of the needle 9. That is, the coating can completely cover the surface of the needle 9 or partially cover the surface of the needle 9. However, regardless of whether the coating completely or partially covers the needle 9, it must cover the tip region of the needle 9.

[0045] The support assembly is also equipped with a sensor 4 for detecting low liquid levels in the rubber cartridge, such as... Figure 3 Sensor 4 is mounted on the side of the glue cartridge fixing bracket 2 via a vertical connecting block. When the glue in the glue cartridge is insufficient and its liquid level is low, sensor 4 detects the low liquid level in the glue cartridge 1 and generates an electrical signal, which is sent to the processor. The processor processes the electrical signal and controls the alarm to open, prompting that more glue needs to be added.

[0046] Example 2:

[0047] The following is the working principle of the electro-inking dispensing nozzle of this utility model:

[0048] like Figures 1 to 5 As shown, the specific structure and working process of the electro-inking dispensing nozzle with multi-level electric field correction in this embodiment are as follows:

[0049] After receiving the working signal from the host computer, the glue dispensing controller 101 starts operating, providing a stable and continuous air pressure to the glue storage syringe 1 to ensure that the glue can be smoothly delivered to the needle 9. After receiving the signal from the host computer, the power supply 103 outputs a stable voltage to provide power support for the generation of the electric field.

[0050] Unlike traditional electric fields, this invention creates a unique converging electric field in the needle tip region through multi-level voltage output. The needle tip surface is coated with a hydrophobic or non-stick coating to effectively prevent adhesive adhesion and ensure stable and continuous droplet ejection. The positive electrode needle built into the needle tip 9 is charged through contact electrification or induction electrification. Under the combined effect of air pressure and the electric field, the adhesive inside the needle tip 9 forms a Taylor cone and is ejected as droplets. The adhesive cartridge 1 is precisely positioned by the adhesive cartridge fixing bracket 2 to ensure its stability. The adhesive cartridge 1 and the needle tip 9 are connected by a Luer connector 6. By adjusting the position of the Luer connector 6, the distance between the needle tip and the electrode ring 11 can be flexibly adjusted.

[0051] Due to differences in process requirements and adhesive properties among various products, in practical applications, it is necessary to select the appropriate needle 9 based on the specific product and adhesive type, and adjust the distance between the needle 9 and the electrode ring 11 accordingly. After height adjustment, the needle position is fixed using the locking assembly 7 and Luer fixing piece to prevent displacement during dispensing. Furthermore, since different adhesives require different voltages to form a Taylor cone, the voltage source needs to be adjusted according to the specific characteristics of the adhesive 15 during actual use. Through multiple tests, the voltage range that allows the adhesive 15 to stably form a Taylor cone and achieve precise dispensing is identified to ensure smooth dispensing operations and dispensing quality.

[0052] In summary,

[0053] 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. Any equivalent structural or procedural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. An electro-inking dispensing nozzle with a multi-level electric field correction structure, comprising a glue cartridge (1) for storing glue, a support assembly for fixing the glue cartridge (1), and a needle (9), characterized in that, The needle (9) and the rubber tube (1) are connected by a connector (6); The internal flow channel of the needle (9) is provided with a needle-shaped electrode (14); The electro-inking dispensing nozzle also includes a locking assembly (7), one end of which is connected to the bracket assembly, and the other end of which can lock the needle (9); The lower end of the locking assembly (7) has a cavity, and a connecting plate (10) is fixed at the opening of the cavity. The upper surface of the connecting plate (10) has a groove (12), and the groove (12) is provided with a through hole (13). The glue outlet of the needle (9) points to the through hole (13). An electrode ring (11) is fixed at the lower end of the connecting plate (10); The electro-inking dispensing nozzle also includes a connector fixing member (5), one end of which is connected to the bracket assembly, and the other end of which fixes the connector (6).

2. The electro-inking and dispensing nozzle with a multi-level electric field correction structure according to claim 1, characterized in that, The connector (6) is a Luer connector.

3. The electro-inking and dispensing nozzle with a multi-level electric field correction structure according to claim 1, characterized in that, The inner diameter of the flow channel is 0.5μm-500μm.

4. The electro-inking and dispensing nozzle with a multi-level electric field correction structure according to claim 1, characterized in that, The surface of the electrode (14) is plated with an insulating layer or has no surface treatment.

5. The electro-inking and dispensing nozzle with a multi-level electric field correction structure according to claim 1, characterized in that, The electrode (14) is located on the central axis of the internal flow channel of the needle (9).

6. The electro-inking and dispensing nozzle with a multi-level electric field correction structure according to claim 1, characterized in that, The surface of the needle (9) is coated.

7. The electro-inking and dispensing nozzle with a multi-level electric field correction structure according to claim 6, characterized in that, The coating includes either a hydrophobic layer or a non-stick layer.

8. The electro-inking and dispensing nozzle with a multi-level electric field correction structure according to claim 6, characterized in that, The coating covers at least the end region of the needle (9).

9. The electro-inking and dispensing nozzle with a multi-level electric field correction structure according to claim 1, characterized in that, The support assembly is also equipped with a sensor (4) for detecting low liquid levels in the rubber tube.

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