Dispensing needle used for die bonder and capable of preventing glue falling

Abstract

The utility model discloses an anti-drop glue dispensing needle for a die bonder, which comprises a glue dispensing needle body, the bottom of the glue dispensing needle body is provided with an end plane, the middle of the end plane is connected with a cylindrical glue head which is longitudinally arranged, the diameter of the glue head is smaller than that of the glue dispensing needle body, the end plane is provided with an anti-drop glue groove which is recessed upwards, and the glue dispensing needle body is provided with a glue dispensing groove which is recessed upwards. The glue falling prevention groove is arranged to be in a circular ring shape, and the glue falling prevention groove is arranged around the gluing head. The glue dispensing head is simple in structure and reasonable in design, and can solve the problem that the glue is easy to throw off in the high-speed swinging working process after the glue is taken by the glue dispensing head.

Description

Technical Field

[0001] This utility model relates to the field of die bonder technology, and more specifically, to a die bonder dispensing needle that prevents adhesive from falling off. Background Technology

[0002] LED chips can include components such as brackets, light-emitting chips, and lead frames. The mounting of the light-emitting chips requires a die bonder. Before chip transfer, the dispensing head of the die bonder is typically used to dispense adhesive onto the mounting portion of the lead frame. However, existing conventional dispensing heads, such as the one described in patent publication CN 219745334 U (a novel mini LED die bonder dispensing head), have a dispensing area on a flat step. This makes it easy for the adhesive to be splattered during high-speed oscillation after the dispensing head picks up the adhesive. Utility Model Content

[0003] The purpose of this invention is to overcome the above-mentioned defects in the prior art and provide a dispensing needle for a die bonder that adopts an anti-adhesion groove design to prevent adhesive from falling off.

[0004] To achieve the above objectives, this utility model provides a dispensing needle for a die bonder that prevents adhesive from falling off. The dispensing needle body has an end plane at its bottom, and a cylindrical adhesive head is connected to the middle of the end plane. The diameter of the adhesive head is smaller than the diameter of the dispensing needle body. An upwardly recessed anti-adhesion groove is provided on the end plane. The anti-adhesion groove is arranged in an annular shape and surrounds the adhesive head.

[0005] Preferably, the upper end of the dispensing needle body is cylindrical, and the lower end of the dispensing needle body is frustoconical.

[0006] Preferably, the depth of the anti-adhesive groove is 0.1mm to 0.3mm.

[0007] Preferably, the upper outer wall of the dispensing needle body is provided with at least one raised ring for preventing glue from creeping.

[0008] Preferably, there are two convex rings, spaced apart from top to bottom.

[0009] Preferably, both the dispensing needle body and the adhesive head are made of tungsten carbide.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] This utility model has a simple structure and reasonable design. It has an anti-glue groove arranged around the glue head on the end plane of the glue dispensing needle body. This can overcome the problem that glue is easily thrown off during the high-speed swinging operation after the glue dispensing head picks up glue. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of the dispensing needle for the die bonder provided in this embodiment of the utility model;

[0014] Figure 2 This is a bottom view of the dispensing needle for a die bonder provided in this embodiment of the present invention;

[0015] Figure 3 This is an enlarged view of the head structure of the dispensing needle for a die bonder provided in this embodiment of the utility model. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] Please refer to Figure 1 The present invention provides a dispensing needle for a die bonder that prevents adhesive from falling off, including a dispensing needle body 1, an end plane 2 at the bottom of the dispensing needle body 1, and a longitudinally arranged adhesive head 3 connected to the middle of the end plane 2.

[0018] Preferably, the upper end of the dispensing needle body 1 can be set in a cylindrical shape, and the lower end of the dispensing needle body 1 can be set in a frustum-shaped cone with a gradually decreasing diameter.

[0019] In this embodiment, the adhesive head 3 is cylindrical, and the diameter of the adhesive head 3 is smaller than the diameter of the dispensing needle body 1.

[0020] like Figure 2 and Figure 3As shown, the end face 2 of the dispensing needle body 1 is provided with an upwardly recessed anti-adhesion groove 4. The anti-adhesion groove 4 can be configured as a ring and is arranged around the adhesive head 3. Preferably, the depth of the anti-adhesion groove 4 can be set to 0.1mm to 0.3mm. Of course, other parameters can be set according to actual needs.

[0021] The anti-glue groove 4 can hold the glue and increase the contact area between the glue and the dispensing needle body 1. Its concave design can limit the glue, so that the glue is less likely to be splattered after the dispensing head picks up the glue.

[0022] like Figure 1 As shown, the upper outer wall of the dispensing needle body 1 may also be provided with at least one raised ring 5 to prevent glue from creeping. Preferably, two raised rings 5 ​​may be provided, with the two raised rings 5 ​​spaced apart from top to bottom.

[0023] In specific manufacturing, both the dispensing needle body 1 and the adhesive head 3 can be made of tungsten steel. Of course, in other embodiments, other metal materials can also be used.

[0024] In summary, this utility model has a simple structure and reasonable design. It has an anti-glue-drop groove arranged around the glue head on the end plane of the glue dispensing needle body. This can overcome the problem that glue is easily splattered during high-speed swinging operation after the glue dispensing head picks up glue.

[0025] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A dispensing needle for a die bonder that prevents adhesive detachment, characterized in that: The device includes a dispensing needle body, the bottom of which has an end plane. A cylindrical adhesive head is connected to the middle of the end plane. The diameter of the adhesive head is smaller than the diameter of the dispensing needle body. An upwardly recessed anti-adhesion groove is provided on the end plane. The anti-adhesion groove is arranged in a ring shape and surrounds the adhesive head.

2. The dispensing needle for a die bonder that prevents adhesive detachment according to claim 1, characterized in that: The upper end of the dispensing needle body is cylindrical, and the lower end of the dispensing needle body is frustoconical.

3. The die bonder dispensing needle for preventing adhesive detachment according to claim 1, characterized in that: The depth of the anti-adhesive groove is 0.1mm to 0.3mm.

4. The die bonder dispensing needle for preventing adhesive detachment according to claim 1, characterized in that: The upper outer wall of the dispensing needle body is provided with at least one raised ring to prevent glue from crawling.

5. The die bonder dispensing needle for preventing adhesive detachment according to claim 4, characterized in that: Two convex rings are provided, spaced apart from top to bottom.

6. The die bonder dispensing needle for preventing adhesive detachment according to claim 1, characterized in that: Both the dispensing needle body and the adhesive head are made of tungsten steel.

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