Dispensing needle head, dispensing assembly and dispensing device

Abstract

The utility model relates to an adhesive dispensing needle head, an adhesive dispensing assembly and an adhesive dispensing device.The adhesive dispensing needle head comprises a body and a needle tip part which are sequentially arranged, an adhesive dispensing channel is formed in the body and extends in the axial direction of the body, and an adhesive outlet hole communicating with the adhesive dispensing channel is formed in the needle tip part; and the aperture of the glue outlet hole far away from the body is smaller than that of the glue outlet hole close to the body. According to the technical scheme, the technical problem that a traditional dispensing needle is poor in dispensing effect when glue is not heated is effectively solved.

Description

Technical Field

[0001] This application relates to the technical field of dispensing devices, and particularly to a dispensing needle tip, a dispensing assembly, and a dispensing device. Background Art

[0002] During the encapsulation process of a lens module, a gap will be generated at the joint between the camera and the PCB board. There is a risk of dust and water ingress into this gap. Therefore, a dispensing machine needs to be used to perform dispensing and curing operations on this gap to enhance the sealing performance of the connection between the camera and the PCB board.

[0003] In related technologies, a traditional dispensing needle tip is generally used to perform dispensing on this gap. To ensure the dispensing effect, the glue inside the traditional dispensing needle tip usually needs to be heated before performing the dispensing operation. If the glue is not heated and then dispensed, an adverse situation where the glue adheres to the needle tip or the product surface will occur, and the dispensing effect is poor. Therefore, there is an urgent need to find a new type of dispensing needle tip that can achieve the dispensing operation without heating the glue and has a good dispensing effect. Summary of the Utility Model

[0004] This application provides a dispensing needle tip, a dispensing assembly, and a dispensing device to solve the technical problem of poor dispensing effect of traditional dispensing needle tips when the glue is not heated.

[0005] To this end, in a first aspect, an embodiment of this application provides a dispensing needle tip, which includes a body and a needle tip part arranged in sequence. A dispensing channel is provided on the body, and the dispensing channel extends along the axial direction of the body. A glue outlet hole communicated with the dispensing channel is provided on the needle tip part, and the aperture of the glue outlet hole far from the body is smaller than the aperture of the glue outlet hole close to the body.

[0006] In a possible implementation manner, the glue outlet hole includes a drainage section, an inclined section, and a dispensing section arranged in sequence. The drainage section is communicated with the dispensing channel, and the radial dimension of the dispensing section is smaller than the radial dimension of the drainage section.

[0007] In a possible implementation manner, the glue outlet hole includes a drainage section, an inclined section, and a dispensing section arranged in sequence. The drainage section is communicated with the dispensing channel, and the radial dimension of the dispensing section is smaller than the radial dimension of the inclined section.

[0008] In a possible implementation manner, the first included angle between the hole wall of the inclined section and the straight line where the axis of the body is located is 42° - 68°; and / or,

[0009] The axial length of the drainage section is greater than the axial length of the dispensing section, and the axial length of the dispensing section is greater than the axial length of the inclined section.

[0010] In a possible implementation manner, the body includes a limit stop part and a glue storage part arranged in sequence. The radial dimension of the limit stop part is greater than or equal to the radial dimension of the glue storage part, and the needle tip part is connected to the glue storage part.

[0011] In a possible implementation, a glue inlet hole is provided on the limiting stop portion, a storage cavity communicating with the glue inlet hole is provided on the glue storage portion, a second included angle between the inner wall of the glue inlet hole and the inner wall of the storage cavity is 110°-135°, and the glue outlet hole communicates with the storage cavity.

[0012] In a possible implementation, a third included angle between the inner wall of the storage cavity and the straight line where the axis of the body is located is 30°-75°.

[0013] In a possible implementation, a fourth included angle between the outer wall of the glue storage portion and the outer wall of the needle tip portion is 145°-165°; and / or,

[0014] A fifth included angle between the outer wall of the glue storage portion and the outer wall of the limiting stop portion is 190°-220°.

[0015] In a possible implementation, the viscosity of the liquid in the glue dispensing needle is less than or equal to 7000 mPa·s.

[0016] In a second aspect, the present application further provides a glue dispensing assembly, including a syringe barrel, an elastic member and the glue dispensing needle as described above. The syringe barrel is provided with a movable cavity and a movable hole communicating with the movable cavity. The elastic member is arranged in the movable cavity and abuts between the syringe barrel and the body of the glue dispensing needle. The glue dispensing needle can be movably inserted into the movable hole.

[0017] In a third aspect, the present application further provides a glue dispensing device, which is characterized in that it includes a control component and the glue dispensing assembly as described above. The control component is arranged on the syringe barrel of the glue dispensing assembly and is configured to control the glue dispensing needle of the glue dispensing assembly to perform glue dispensing operations.

[0018] According to the glue dispensing needle, the glue dispensing assembly and the glue dispensing device provided by the embodiments of the present application, the glue dispensing needle includes a body and a needle tip portion arranged in sequence. A glue dispensing channel is provided on the body, and the glue dispensing channel extends along the axis of the body. A glue outlet hole communicating with the glue dispensing channel is provided on the needle tip portion, and the aperture of the glue outlet hole far from the body is smaller than the aperture of the glue outlet hole close to the body. Compared with the glue dispensing mode of traditional glue dispensing needles that need to heat the glue to ensure the glue dispensing effect, the technical solution of the present application realizes the adjustment of the liquid flow rate at the glue outlet hole by setting the mechanical structure of the glue outlet hole, so as to increase the liquid contact area and flow resistance at the glue outlet hole, thereby realizing the adjustment of the glue dispensing amount of the glue dispensing needle. This is beneficial to avoiding excessive glue accumulation on the product, which affects the curing and aesthetics of the product, and residue on the outer surface of the glue dispensing needle, which affects the next glue dispensing operation, effectively improving the glue dispensing stability and consistency of the glue dispensing needle and improving the glue dispensing effect. Description of the Drawings

[0019] The accompanying drawings herein are incorporated into and constitute a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application. To more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the accompanying drawings required for use in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those of ordinary skill in the art, other accompanying drawings can be obtained based on these drawings without creative efforts. One or more embodiments are exemplarily illustrated by the pictures in the corresponding accompanying drawings. These exemplary illustrations do not limit the embodiments. Elements with the same reference numerals in the accompanying drawings are represented as similar elements. Unless otherwise stated, the drawings in the accompanying drawings do not constitute a scale limitation.

[0020] Figure 1 Axial sectional view of the dispensing needle tip provided by the embodiment of the present application;

[0021] Figure 2 Schematic perspective view of the dispensing needle tip provided by the embodiment of the present application;

[0022] Figure 3 Bottom view of the dispensing needle tip provided by the embodiment of the present application;

[0023] Figure 4 Axial sectional view of the dispensing needle tip provided by the embodiment of the present application.

[0024] Explanation of reference numerals in the drawings:

[0025] 100, body; 101, glue inlet hole; 102, storage cavity; 110, limit stop portion; 120, glue storage portion;

[0026] 200, needle tip portion; 210, glue outlet hole; 211, drainage section; 212, inclined section; 213, dispensing section;

[0027] α1, first included angle; α2, second included angle; α3, third included angle; α4, fourth included angle; α5, fifth included angle. Detailed implementation manners

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0029] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art can recognize the applicability of other processes and / or the use of other materials.

[0030] For ease of description, spatial relative relationship terms may be used in the text to describe the relative position relationship or movement of one element or feature shown in the figure with respect to another element or feature. These relative relationship terms are, for example, "inner", "outer", "inner side", "outer side", "below", "beneath", "above", "over", "front", "rear", etc. Such spatial relative relationship terms are intended to include different orientations of the device in use or operation other than the orientations depicted in the figure. For example, if the device in the figure undergoes a position flip, attitude change, or motion state change, then these directional indications will change accordingly. For example, an element described as "below" or "beneath" other elements or features will subsequently be oriented as "above" or "over" other elements or features. Thus, the exemplary term "below" can include both upward and downward orientations. The device may be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used in the text are interpreted accordingly.

[0031] See Figures 1 to 4 , an embodiment of the present application provides a dispensing needle head, including a body 100 and a tip portion 200 arranged in sequence. A dispensing channel is provided on the body 100, and the dispensing channel extends along the axial direction of the body 100. A glue outlet hole 210 communicating with the dispensing channel is provided on the tip portion 200, and the aperture of the glue outlet hole 210 far from the body 100 is smaller than the aperture of the glue outlet hole 210 close to the body 100.

[0032] Compared with the dispensing mode of traditional dispensing needle heads that need to heat the glue to ensure the dispensing effect, the technical solution of the present application adjusts the flow rate of the liquid at the glue outlet hole 210 by setting the mechanical structure of the glue outlet hole 210, so as to increase the liquid contact area and flow resistance at the glue outlet hole 210, thereby realizing the adjustment of the dispensing amount of the dispensing needle head. This is beneficial to avoiding excessive glue accumulation on the product, which may affect the curing and aesthetics of the product, and residue on the outer surface of the dispensing needle head, which may affect the next dispensing operation. It effectively improves the dispensing stability and consistency of the dispensing needle head and improves the dispensing effect.

[0033] Specifically, the dispensing needle tip is configured as a combined structure including at least a body 100 and a needle tip portion 200. The body 100 is used to connect to the syringe barrel. It can be a metal component with high hardness and rigidity and a long service life. A dispensing channel is provided on the body 100. One end of the dispensing channel can be connected to a glue tank through a rubber tube. Liquid glue is stored in the glue tank, and the liquid glue in the glue tank can be sucked and transferred to the dispensing channel of the dispensing needle tip by a pump body. The needle tip portion 200 can be a needle-shaped metal component with high rigidity and hardness. It can perform multiple dispensing operations at a specified position on the product and has a long service life. A glue outlet hole 210 is provided on the needle tip portion 200, and its radial aperture is smaller than the radial dimension of the dispensing channel. In this way, the large space of the dispensing channel can be used to cache the liquid glue, providing sufficient glue for the lower glue outlet hole 210 to ensure the continuity and consistency of glue dispensing. In addition, the glue outlet hole 210 is configured to be reduced in size. This can not only increase the contact area between the inner wall of the glue outlet hole 210 and the liquid glue, making it difficult to break the surface tension of the liquid glue adhering to the inner wall of the glue outlet hole 210, thereby slowing down the flow rate of the liquid glue flowing out from the glue outlet hole 210 and improving the dispensing stability of the dispensing needle tip; but also provide upward resistance to the liquid glue, further dispersing the self-gravity of the liquid glue and reducing its flow rate at the outflow end of the glue outlet hole 210, improving the dispensing stability and dispensing effect.

[0034] As Figure 1 and Figure 4 shown, in a possible implementation, the glue outlet hole 210 includes a drainage section 211, an inclined section 212, and a dispensing section 213 arranged in sequence. The drainage section 211 is connected to the dispensing channel, and the radial dimension of the dispensing section 213 is smaller than that of the drainage section 211.

[0035] In this embodiment, the specific configuration of the glue outlet hole 210 is optimized. Specifically, the glue outlet hole 210 is configured as a combined structure including at least a drainage section 211, an inclined section 212, and a dispensing section 213. The drainage section 211 can be a straight hole, one end of which is connected to the dispensing channel and the other end is connected to the inclined section 212. In this way, the liquid glue in the dispensing channel can be guided into the inclined section 212. The inclined section 212 can be an inclined hole, the end connected to the drainage section 211 is the large-aperture end, and the end connected to the dispensing section 213 is the small-aperture end. The inclined hole wall can increase the contact area with the liquid glue, ensuring the surface tension between the liquid glue and the glue outlet hole 210; it can also increase the flow resistance of the liquid glue at the hole wall, slowing down the flow rate of the liquid glue flowing towards the dispensing section 213, thereby realizing the adjustment of the flow rate of the liquid glue and the adjustment of the glue output, which is beneficial to improving the dispensing stability and consistency. The dispensing section 213 can be a straight hole, which is used to connect to the external environment. When a certain amount of glue inside it is dispensed and discharged at the designated position of the product at its end, the dispensing operation on the designated position of the product can be realized. The structure of the glue outlet hole 210 provided in this example is simple, convenient to process, and beneficial to improving the dispensing stability, and the dispensing effect is good.

[0036] Of course, in other embodiments, the drainage section 211 can also be an inclined hole, and the dispensing section 213 can also be an inclined hole to further increase the contact area between the glue outlet hole 210 and the liquid glue, increase the resistance to the liquid glue, slow down the glue output flow rate, improve the dispensing accuracy, and realize the precise control of the glue output.

[0037] As Figure 4 shown, in a possible implementation manner, the first included angle α1 between the hole wall of the inclined section 212 and the straight line where the axis of the body 100 is located is 42° - 68°. With such a setting, the inclination degree of the inclined section 212 can be kept within a reasonable range, avoiding the adverse situation that the inclined section 212 is too flat due to the too large first included angle α1, resulting in too large resistance to the liquid glue and glue blockage, or avoiding the adverse situation that the inclined section 212 is too steep due to the too small first included angle α1, resulting in too large glue output speed and causing glue to accumulate on the product or remain on the outer surface of the needle tip part 200, improving the glue output uniformity and stability, and the glue output effect is good.

[0038] As Figure 1 and Figure 4As shown, in a possible implementation, the axial length of the drainage section 211 is greater than that of the dispensing section 213, and the axial length of the dispensing section 213 is greater than that of the inclined section 212. In this example, by reasonably utilizing the axial space of the needle tip 200, the glue discharging effect of the collaborative cooperation of the drainage section 211, the inclined section 212, and the dispensing section 213 is optimized. Among them, the longer drainage section 211 can divert and store a relatively large amount of glue, avoid the accumulation of glue in the dispensing channel of the main body 100, increase the amount of glue in the glue discharging hole 210, and improve the glue discharging efficiency; the shortest inclined section 212 can improve the glue flow rate in the glue discharging hole 210, but will not cause the glue to be blocked due to excessive resistance at this place, which can improve the stability and consistency of glue discharging; the medium-length dispensing section 213 can dispense the glue to the designated position of the product through a smaller aperture, realize the precise dispensing of the glue, improve the dispensing quality of the product, and improve the product quality.

[0039] As Figures 1 to 4 shown, in a possible implementation, the main body 100 includes a limiting and blocking portion 110 and a glue storage portion 120 arranged in sequence. The radial dimension of the limiting and blocking portion 110 is greater than or equal to that of the glue storage portion 120, and the needle tip 200 is connected to the glue storage portion 120.

[0040] In this embodiment, the specific configuration of the main body 100 is optimized. Specifically, the main body 100 is configured to at least include a combined structure of a limiting and blocking portion 110 and a glue storage portion 120. The limiting and blocking portion 110 can be an inverted T-shaped column, which is movably arranged inside the syringe barrel and can form a limit and stop with the moving hole below the syringe barrel to prevent the dispensing needle head from flying out of the syringe barrel, improving the connection stability and reliability between the dispensing needle head and the syringe barrel. The glue storage portion 120 can be a conical structure, and its large-size end can be smoothly connected to the limiting and blocking portion 110 through a chamfer structure to avoid forming side edges between the glue storage portion 120 and the limiting and blocking portion 110 that may scratch the operator or the product, improving the use safety of the dispensing needle head; the needle tip 200 is arranged on the small-size end of the glue storage portion 120, and its size is much smaller than that of the glue storage portion 120 to form a nearly T-shaped flat on the small-size end of the glue storage portion 120. On the one hand, it can reduce the use of raw materials for the needle tip 200 and reduce costs; on the other hand, it can reduce the external dimension of the needle tip 200 so that it can operate in smaller gaps or dispensing positions with smaller spaces, improving the applicable range of the dispensing needle head. The structure of the main body 100 provided in this example is simple, the processing is fast, and the production efficiency is high.

[0041] In one example, the limit stop 110 includes a coaxially arranged horizontal section and a vertical section, and the radial dimension of the horizontal section is larger than the radial dimension of the vertical section to form a female angle at the connection with the vertical section; at this time, a male angle is formed between the bottom wall of the movable cavity of the syringe and the inner wall of the movable hole, and the male angle can match the aforementioned female angle. When the needle tip 200 of the dispensing needle extends out of the movable hole, the female angle fits on the male angle to stop the dispensing needle, prevent the dispensing needle from continuing to extend forward and break away from the restraint of the syringe, and achieve precise and continuous dispensing of the dispensing needle.

[0042] In one example, the stopper 110, the glue storage portion 120 and the needle tip portion 200 can be integrally formed, thereby reducing the processing difficulty of the glue dispensing needle, shortening its production cycle, and improving its sealing performance and glue dispensing effect.

[0043] like Figure 4 As shown, in one possible embodiment, a glue inlet hole 101 is provided on the stopper portion 110, a storage cavity 102 is provided on the glue storage portion 120, and the glue inlet hole 101 is connected to the glue inlet hole 101. The second angle α2 between the inner wall of the glue inlet hole 101 and the inner wall of the storage cavity 102 is 110° to 135°, and the glue outlet hole 210 is connected to the storage cavity 102. Such an arrangement can keep the second angle α2 between the glue inlet hole 101 and the storage cavity 102 within a reasonable range, avoiding the situation where the second angle α2 is too large, resulting in an excessively small axial height of the storage cavity 102, causing the glue outlet speed of the glue entering the glue outlet hole 210 to be too low, thereby affecting the glue outlet efficiency; or, for example, the situation where the second angle α2 is too large, resulting in an excessively large axial height of the storage cavity 102, causing an excessive amount of glue entering the glue outlet hole 210, thereby affecting the control of the glue dispensing amount, thereby improving the uniformity and consistency of the glue dispensing amount each time and improving the glue dispensing effect. For example but not limited to, the second angle α2 between the inner wall of the glue inlet hole 101 and the inner wall of the storage cavity 102 is 135°.

[0044] like Figure 4 As shown, in one possible embodiment, the third angle α3 between the inner wall of the storage cavity 102 and the straight line along the axis of the body 100 is 30° to 75°. This setting can keep the inclination of the inner wall of the storage cavity 102 within a reasonable range, avoiding the third angle α3 being too large, which would make the inner wall of the storage cavity 102 too flat, and the resistance to the liquid glue being too large, resulting in the glue flowing too slowly and accumulating in the storage cavity 102; or avoiding the third angle α3 being too small, which would make the inner wall of the storage cavity 102 too steep, resulting in inconvenience in glue feeding, thereby improving the convenience of glue feeding and the stability of glue dispensing, and improving the glue dispensing effect. For example, but not limited to, the third angle α3 between the inner wall of the storage cavity 102 and the straight line along the axis of the body 100 is 45°.

[0045] like Figure 2 and Figure 4As shown, in a possible implementation, the fourth included angle α4 between the outer wall of the glue storage part 120 and the outer wall of the needle tip part 200 is 145°-165°. With such a setting, the inclination degree of the outer wall of the needle tip part 200 can be kept within a reasonable range, avoiding the situation that the needle tip part 200 is too flat due to the too large fourth included angle α4, the axial length of the needle tip part 200 is too small, resulting in too short a flow rate adjustment stroke of the liquid glue and poor glue discharge stability; or, avoiding the situation that the needle tip part 200 is too steep due to the too small fourth included angle α4, and the axial speed adjustment stroke of the glue discharge hole 210 in the needle tip part 200 is too large, which affects the glue discharge efficiency and the glue discharge amount, improving the glue discharge stability and the glue discharge efficiency, and having a good glue discharge effect. For example but not limited to, the fourth included angle α4 between the outer wall of the glue storage part 120 and the outer wall of the needle tip part 200 is 160°.

[0046] As Figure 2 and Figure 4 shown, in a possible implementation, the fifth included angle α5 between the outer wall of the glue storage part 120 and the outer wall of the limit stop part 110 is 190°-220°. With such a setting, the inclination degree of the outer wall of the glue storage part 120 can be kept within a reasonable range, avoiding the situation that the glue storage part 120 is too steep due to the too large fifth included angle α5, the axial height of the glue storage part 120 is too large, resulting in too much glue entering the glue discharge hole 210 and affecting the control of the dispensing amount; or, avoiding the situation that the axial height of the storage cavity 102 is too small due to the too small fifth included angle α5, and the glue discharge speed of the glue entering the glue discharge hole 210 is too low, which affects the glue discharge efficiency, improving the uniformity and consistency of each dispensing amount, and improving the dispensing effect. For example but not limited to, the fifth included angle α5 between the outer wall of the glue storage part 120 and the outer wall of the limit stop part 110 is 220°.

[0047] In a possible implementation, the viscosity of the liquid in the dispensing needle is less than or equal to 7000 mPa·s. This example provides the optimal viscosity of the liquid glue in the dispensing needle, which can not only ensure the viscosity of the glue to the specified position of the product, making the product firmly adhered; but also ensure the fluidity of the glue, enabling the glue to flow freely in the dispensing needle without heating to achieve the dispensing operation. For example but not limited to, the liquid in the dispensing needle can be Loctite glue with a viscosity of 7000 mPa·s.

[0048] In addition, the present application also provides a dispensing assembly, including a syringe (not shown in the figure), an elastic member (not shown in the figure), and the dispensing needle head as described above. The syringe is provided with a movable cavity and a movable hole communicating with the movable cavity. The elastic member is disposed in the movable cavity and abuts between the syringe and the body 100 of the dispensing needle head. The dispensing needle head is movably inserted into the movable hole. For the specific structure of the dispensing needle head, refer to the above-mentioned embodiments. Since this dispensing assembly adopts all the technical solutions of the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be elaborated herein one by one.

[0049] In this embodiment, a dispensing assembly with buffer elasticity is provided. This buffer elasticity can offset the stress when the tip portion 200 abuts against the position to be dispensed on the product, reduce the damage rate of the dispensing needle head, and has a long service life. The dispensing assembly is configured to at least include a combined component of a syringe, an elastic member, and a dispensing needle head. The syringe can be a long tube structure, and corresponding holes are opened at both ends of its long side. The bottom hole is the movable hole, and the top hole is the insertion hole for the glue pipe to pass through. The elastic member can be a spring, which extends along the axial direction of the syringe and abuts between the inner wall of the top of the syringe and the body 100 of the dispensing needle head. When the dispensing needle head abuts against the position to be dispensed on the product, it can provide a buffer elastic force to offset the abutting stress for the needle head, realize the flexible connection between the dispensing needle head and the syringe, reduce the risk of breakage of the dispensing needle head directly contacting the hard product, and at the same time, avoid the dispensing needle head from damaging the product and improve the dispensing quality; and, provide an elastic force for the dispensing needle head to return to its original position, so as to continue the dispensing operation subsequently and realize the continuity of dispensing.

[0050] In addition, the present application also provides a dispensing device, which is characterized in that it includes a control component (not shown in the figure) and the dispensing assembly as described above. The control component is disposed on the syringe of the dispensing assembly and is configured to control the dispensing needle head of the dispensing assembly to perform a dispensing operation. For the specific structure of the dispensing assembly, refer to the above-mentioned embodiments. Since this dispensing device adopts all the technical solutions of the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be elaborated herein one by one.

[0051] In this embodiment, an automatic or semi-automatic dispensing device is provided. The control component can be a controller, which can be arranged on the outer side wall of the syringe through fasteners such as screws / bolts to improve the connection tightness with the syringe and make the whole structure more compact and reliable.

[0052] It should be understood that the terms used herein are for the purpose of describing particular example embodiments only and are not intended to be limiting. Unless the context clearly dictates otherwise, the singular forms "a", "an", and "the" as used herein may also include the plural forms. The terms "comprising", "including", "containing", and "having" are inclusive and thus specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the particular order described or illustrated, unless explicitly indicated as an order of performance. It should also be understood that additional or alternative steps may be used.

[0053] Although the terms first, second, third, etc. may be used herein to describe multiple elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or section from another. Unless the context clearly indicates otherwise, terms such as "first", "second", and other numerical terms when used herein do not imply an order or sequence. Thus, the first element, component, region, layer, or section discussed below may be referred to as the second element, component, region, layer, or section without departing from the teachings of the example embodiments.

[0054] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A dispensing needle, characterized in that, It includes a body (100) and a needle tip part (200) arranged in sequence. A glue dispensing channel is provided on the body (100), and the glue dispensing channel extends along the axial direction of the body (100). A glue outlet hole (210) communicating with the glue dispensing channel is provided on the needle tip part (200), and the aperture of the glue outlet hole (210) far from the body (100) is smaller than the aperture of the glue outlet hole (210) close to the body (100).

2. The dispensing needle according to claim 1, wherein, The glue outlet hole (210) includes a drainage section (211), an inclined section (212) and a glue dispensing section (213) arranged in sequence. The drainage section (211) communicates with the glue dispensing channel, and the radial dimension of the glue dispensing section (213) is smaller than the radial dimension of the drainage section (211).

3. The dispensing needle according to claim 2, wherein, The first angle (α1) between the hole wall of the inclined section (212) and the straight line where the axis of the body (100) is located is 42° to 68°; and / or, The axial length of the drainage section (211) is greater than the axial length of the glue dispensing section (213), and the axial length of the glue dispensing section (213) is greater than the axial length of the inclined section (212).

4. The dispensing needle according to claim 1, wherein The body (100) includes a limit stop part (110) and a glue storage part (120) arranged in sequence. The radial dimension of the limit stop part (110) is greater than or equal to the radial dimension of the glue storage part (120), and the needle tip part (200) is connected to the glue storage part (120).

5. The dispensing needle according to claim 4, characterized in that, An inlet hole (101) is provided on the limit stop part (110), a storage cavity (102) communicating with the inlet hole (101) is provided on the glue storage part (120), the second angle (α2) between the inner wall of the inlet hole (101) and the inner wall of the storage cavity (102) is 110° to 135°, and the glue outlet hole (210) communicates with the storage cavity (102).

6. The dispensing needle according to claim 5, wherein, The third angle (α3) between the inner wall of the storage cavity (102) and the straight line where the axis of the body (100) is located is 30° to 75°.

7. The dispensing needle according to claim 4, characterized in that, The fourth angle (α4) between the outer wall of the glue storage part (120) and the outer wall of the needle tip part (200) is 145° to 165°; and / or, The fifth angle (α5) between the outer wall of the glue storage part (120) and the outer wall of the limit stop part (110) is 190° to 220°.

8. The dispensing needle according to claim 1, wherein, The viscosity of the liquid in the glue dispensing needle is less than or equal to 7000 mPa*s.

9. A dispensing component, characterized in that, It includes a syringe barrel, an elastic member and the glue dispensing needle according to any one of claims 1 to 8. An activity cavity and an activity hole communicating with the activity cavity are provided on the syringe barrel. The elastic member is arranged in the activity cavity and abuts between the syringe barrel and the body (100) of the glue dispensing needle, and the glue dispensing needle can be movably inserted into the activity hole.

10. A dispensing device, characterized in that, It includes a control component and the glue dispensing component according to claim 9. The control component is arranged on the syringe barrel of the glue dispensing component and is configured to control the glue dispensing needle of the glue dispensing component to perform glue dispensing operations.

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