WO2016077990A1

WO2016077990A1 - Dispensing needle and dispenser

Info

Publication number: WO2016077990A1
Application number: PCT/CN2014/091386
Authority: WO
Inventors: 魏晓敏
Original assignee: 魏晓敏
Priority date: 2014-11-18
Filing date: 2014-11-18
Publication date: 2016-05-26
Also published as: CN205599440U

Abstract

A dispensing needle and a dispenser. The dispensing needle comprises: a needle tube and a needle head communicated with each other. The needle head is communicated with a horn-shaped opening part. The opening part has an inner diameter gradually increasing along the dispensing direction, and is flattened in a direction perpendicular to the dispensing direction at the tail end of the dispensing direction. The opening part is made of a flexible material incompatible with a dispensed adhesive. During dispensing, when the flexible opening part touches an LED chip, the tail end of the opening part can be flattened to cover the LED chip, and the dispensed adhesive can be injected into the LED chip along the needle head and the opening part through the needle tube, so that adhesive overflow is avoided while the dispensing efficiency is ensured; because of the better matching between the opening part and the LED chip, injection blind areas in the LED cavity can be reduced, dispensing uniformity is improved, and the performance and quality of LED finished products are guaranteed.

Description

Dispensing needle and dispenser

Technical field

The present application relates to the field of light emitting diodes, and in particular, to a dispensing needle and a dispensing machine.

Background technique

In the packaging process of Light Emitting Diode (LED), a very important step is to dispense the LED, and the quality of the dispensing will have a great impact on the performance of the finished LED. At present, the pinholes of the head of the dispensing needle used in the dispensing process are round pinholes, and the cross-sections of the existing dispensing needles are also circular; and the currently common LED sealing glue The shape of the cavity is also square or the like. For a square cavity, the existing circular dispensing needle tube, regardless of its pinhole shape or cross-sectional shape, does not match the elongated cavity. In order to ensure the efficiency of injection, in the process of dispensing, the circular pinhole is generally set to be large enough, which may cause the inner diameter of the circular pinhole to be too large relative to the width of the square cavity, resulting in overflow in the dispensing process, waste The encapsulation of the glue also affects the quality and performance of the finished LED product. If the inner diameter of the circular pinhole is made smaller than the width of the square cavity or the width of the square cavity in consideration of the matching of the size, although the above problem of overflowing can be solved, the cross section of the pinhole is opposite to the cavity. The cross-section of the body is small, and due to the mismatch of the shape, there are many blind spots in the cavity during the injection process that cannot be injected through the dispensing needle, which leads to a decrease in the uniformity of the glue in the cavity and affects the performance of the finished LED product. And quality; at the same time, it will greatly reduce the efficiency of injection.

Summary of the invention

The present application aims to solve at least one of the above technical problems to some extent.

According to a first aspect of the present application, the present application provides a dispensing needle comprising: a needle tube and a needle communicating with each other, wherein the needle is connected with a flared opening member, and an inner diameter of the opening member is gradually increased along a dispensing direction And the end of the dispensing direction is flattened perpendicular to the dispensing direction, and the opening member is made of a flexible material that is incompatible with the dispensing gel.

Further, the opening member is flattened in a square shape at the end of the dispensing direction.

Further, the opening member is flattened in a circle at the end of the dispensing direction.

Further, the opening member is flattened in an elliptical shape at the end of the dispensing direction.

Further, when the dispensing gel is silica gel, the opening member adopts a flexible material that is not compatible with the silica gel.

According to a second aspect of the present application, the present application provides a dispenser including: a base, a dispensing needle disposed on the base, and a glue supply device in communication with the dispensing needle, The dispensing needle includes: a needle tube and a needle communicating with each other, and the needle is connected with a flared opening member, and an inner diameter of the opening member gradually increases along a dispensing direction, and at the point The end of the glue direction is flattened perpendicular to the dispensing direction, and the opening member is made of a flexible material that is incompatible with the dispensing gel.

The beneficial effects of the application are:

By providing a dispensing needle and a dispensing machine, the dispensing needle comprises: a needle tube and a needle communicating with each other, wherein the needle is connected with a flared opening member, and an inner diameter of the opening member gradually increases along a dispensing direction, and The end of the dispensing direction is flattened perpendicular to the dispensing direction, and the opening member is made of a flexible material that is incompatible with the dispensing gel. In this way, when the flexible opening member touches the LED chip, the end of the flexible opening member can be flattened to cover the LED chip, and the dispensing gel can be injected into the LED chip along the needle and the opening through the needle tube, thereby ensuring the dispensing efficiency while ensuring the dispensing efficiency. Avoid overflowing; because the opening is more matched with the LED chip, it can reduce the injection blind zone in the LED cavity, improve the uniformity of dispensing, and ensure the performance and quality of the finished LED.

DRAWINGS

FIG. 1 is a schematic structural view of a dispensing needle according to an embodiment of the present application.

detailed description

The embodiments of the present application are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are intended to be illustrative, and are not to be construed as limiting.

In the description of the present application, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation or position of indications such as "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. The relationship is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of the description and the simplified description, and is not intended to indicate or imply that the device or component referred to has a specific orientation, and is constructed and operated in a specific orientation. It is not to be construed as limiting the application.

Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may include one or more of the features either explicitly or implicitly. In the description of the present application, the meaning of "a plurality" is two or more unless specifically and specifically defined otherwise.

In this application, the terms "installation", "connected", "connected", "solid", unless expressly stated and limited otherwise. Terms such as "should" should be understood broadly. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly through an intermediate medium. The connection may be internal to the two components. For those skilled in the art, the specific meanings of the above terms in the present application may be understood on a case-by-case basis.

In the present application, the first feature "on" or "under" the second feature may include direct contact of the first and second features, and may also include first and second features, unless otherwise specifically defined and defined. It is not in direct contact but through additional features between them. Moreover, the first feature "above", "above" and "above" the second feature includes the first feature directly above and above the second feature, or merely indicating that the first feature level is higher than the second feature. The first feature "below", "below" and "below" the second feature includes the first feature directly above and above the second feature, or merely the first feature level being less than the second feature.

The present application will be further described in detail below with reference to the accompanying drawings.

Referring to FIG. 1 , the present application provides a dispenser for injecting a colloid into a cavity of an LED chip to form a finished LED product.

The above dispensing machine mainly comprises: a base, a dispensing needle disposed on the base, and a glue supply device in communication with the dispensing needle. The number of dispensing needles is adopted according to actual conditions, for example, 4 groups, 8 groups, etc., the glue supply device can be a glue receiving cavity, and the glue receiving cavity is connected with the dispensing needle through the glue supply pipe, and the glue supply device can also Set the control unit to control the amount of glue dispensed.

The dispensing needle mainly comprises: a needle tube 1 and a needle 2 which are connected to each other, and a needle-shaped opening member 3 is connected to the needle 2. The inner diameter of the opening member 3 gradually increases along the dispensing direction, and the end 31 of the dispensing direction is vertical. Flattened in the dispensing direction, the opening member 3 is made of a flexible material that is incompatible with the dispensing gel.

In the present embodiment, the opening member 3 is flattened in a square shape at the end 31 of the dispensing direction. In other embodiments, the opening member 3 is flattened in a shape such as a circle or an ellipse at the end 31 of the dispensing direction.

In order to ensure that the dispensing gel does not adhere to the opening member, when the dispensing gel is silica gel, the opening member is made of a flexible material that is not compatible with the silicone, such as polyacrylate.

In the description of the present specification, reference is made to the descriptions of the terms "one embodiment", "some embodiments", "one embodiment", "some embodiments", "example", "specific examples", or "some examples" The specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the application. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

The above content is a further detailed description of the present application in combination with a specific implementation manner, and the application cannot be identified. The specific implementation is limited to these descriptions. For the ordinary person skilled in the art to which the present invention pertains, a number of simple deductions or substitutions may be made without departing from the spirit of the present application.

Claims

A dispensing needle comprising: a needle tube and a needle communicating with each other, wherein a needle-shaped opening member is connected to the needle, an inner diameter of the opening member is gradually increased along a dispensing direction, and the dispensing is performed at the dispensing The end of the direction is flattened perpendicular to the dispensing direction, and the opening member is a flexible material that is incompatible with the dispensing gel.
A dispensing needle according to claim 1, wherein said opening member is flattened in a square shape at an end of said dispensing direction.
A dispensing needle according to claim 1, wherein said opening member is flattened in a circular shape at an end of said dispensing direction.
A dispensing needle according to claim 1, wherein said opening member is flattened in an elliptical shape at an end of said dispensing direction.
The dispensing needle according to claim 1, wherein when the dispensing gel is silica gel, the opening member is a flexible material that is not compatible with silicone.
A dispensing machine comprising: a base, a dispensing needle disposed on the base, and a glue supply device in communication with the dispensing needle, the dispensing needle comprising: a needle and a needle communicating with each other The stylus is connected with a flared opening member, the inner diameter of the opening member gradually increases along the dispensing direction, and the end at the dispensing direction is flattened perpendicular to the dispensing direction. The opening member utilizes a flexible material that is incompatible with the dispensing gel.
A dispenser according to claim 6, wherein said opening member is flattened in a square shape at an end of said dispensing direction.
A dispenser according to claim 6, wherein said opening member is flattened in a circular shape at an end of said dispensing direction.
A dispenser according to claim 6, wherein said opening member is flattened in an elliptical shape at an end of said dispensing direction.
The dispenser according to claim 6, wherein when the dispensing gel is silica gel, the opening member is a flexible material that is not compatible with silicone.