CN215964474U

CN215964474U - Dispensing needle structure

Info

Publication number: CN215964474U
Application number: CN202121698578.0U
Authority: CN
Inventors: 龚文; 龚楷
Original assignee: Suzhou Kinglight Optoelectronics Co ltd
Current assignee: Suzhou Kinglight Optoelectronics Co ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2022-03-08
Anticipated expiration: 2031-07-23

Abstract

The utility model discloses a dispensing needle structure which comprises a sleeve fixed on a dispensing arm and a dispensing needle arranged in the sleeve in a telescopic mode, wherein the tip end of the dispensing needle extends out of the bottom end of the sleeve, and a limiting piece used for limiting the needle body of the dispensing needle is arranged on the inner wall of the bottom end of the sleeve. The sleeve and the dispensing needle have high matching degree, so that the dispensing needle does not shake in the dispensing process, the precision positioning is more accurate in dispensing, the problems of different sizes of glue points and the like in dispensing are avoided, and the working efficiency is improved.

Description

Dispensing needle structure

Technical Field

The utility model relates to the technical field of LED packaging, in particular to a dispensing needle structure.

Background

The LED (light emitting diode) is very widely applied, the die bonding in the LED packaging is taken as the first process of packaging, along with the rapid development of packaging flip products, the diversity requirement of products with small space is harsh on the precision positioning requirement of die bonding glue dispensing, the traditional glue dispensing structure on the die bonding machine is easy to cause glue dispensing point deviation when the products are dispensed with glue, the glue dispensing point size is different, the cost efficiency loss is huge, and the traditional glue dispensing structure cannot follow the current development. For example, chinese patent No. CN201632367U, publication No. 2010.11.17: the utility model provides a solid brilliant machine point glues arm, sleeve and point glue needle are glued to the tradition point that the needle of gluing that this point glue on the arm utilized, the point glue needle is flexible for the sleeve, avoid damaging the PCB board and reduce flexible friction, though fix the point glue needle on point glue through the screw thread, but the point glue needle body of built-in the sleeve is only supported by upper and lower spring, the inner space clearance between sleeve end and the point glue needle is big, when gluing, the clearance about, with rock and lead to a little glue needle easy point partially, can cause the problem such as glue point size inequality, the decomposition delay parameter who remedies in the parameter of solid brilliant machine will increase to this, be unfavorable for the development of trade at present, work efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a dispensing needle structure, which enables the matching degree of a sleeve and a dispensing needle to be high, enables the dispensing needle not to shake in the dispensing process, enables the precision positioning to be more accurate in dispensing, avoids the problems of different glue points and the like in dispensing, and improves the working efficiency.

The technical scheme of the utility model is as follows:

the utility model provides a point is glued needle structure, is including being used for fixing the sleeve on the arm of gluing in the point and the point that the flexible setting in the sleeve glues the needle, the pointed end of point is glued the needle and is stretched out telescopic bottom, just telescopic bottom inner wall is equipped with and is used for right the needle body of point is glued the needle and is carried out spacing locating part.

According to the utility model, the limiting piece is additionally arranged at the gap between the sleeve and the dispensing needle, so that the problems that the dispensing needle shakes relative to the sleeve, the gap is reserved for the thickness error of the dispensing needle, and the problem of different sizes of the dispensing points caused by point deviation during dispensing is solved.

Further, the sleeve is a cylinder with a sealed top and a hollow interior, the dispensing needle is arranged in the sleeve and is in telescopic connection with the sleeve through a telescopic spring, one end of the telescopic spring is fixed at the top end of the inner side of the sleeve, and the other end of the telescopic spring is fixedly connected with the top end of the dispensing needle.

When the die bonder drives the dispensing arm to dispense, the retractable spring enables the dispensing needle to have certain buffering elasticity, and the PCB subjected to dispensing is prevented from being damaged.

Furthermore, the locating part includes the spring leaf, the both ends of spring leaf are fixed on telescopic bottom inner wall, and the outside bending in middle part forms domes, and the highest point of domes with the needle body contact of point gum needle.

Furthermore, the inner wall of the bottom end of the sleeve is symmetrically provided with two spring pieces, and the needle body of the dispensing needle is limited from two sides.

Two arched spring pieces are arranged on two sides of the inner wall of the sleeve and used for limiting the dispensing needle, the dispensing needle is prevented from shaking relative to the sleeve when the dispensing needle is not influenced to stretch and dispense, and dispensing precision is improved.

Furthermore, four spring pieces are uniformly arranged on the inner wall of the bottom end of the sleeve along the peripheral side, and the glue dispensing needle body is limited from the periphery.

Four arched spring pieces can be used for limiting the dispensing needle on the periphery, so that shaking is further prevented, and the dispensing precision is improved.

Further, telescopic periphery wall is equipped with and is used for carrying out threaded connection's external screw with the screw of point gluey arm.

The sleeve is fixedly connected with the dispensing arm in a threaded connection mode, so that the sleeve is convenient to assemble and disassemble.

Furthermore, the top of the screw hole of the sleeve penetrating through the dispensing arm is provided with an adjusting nut for adjusting the extending length of the sleeve.

The extension length of the sleeve relative to the dispensing arm can be adjusted by screwing the adjusting nut, so that the dispensing position of the dispensing needle can be adjusted.

Furthermore, the sleeve is made of stainless steel, and the stainless steel has the characteristics of firmness, difficult deformation, rust prevention and the like.

Furthermore, the telescopic spring is made of stainless steel.

Furthermore, the spring piece is a thin sheet steel product, and two ends of the spring piece are welded on the inner wall of the bottom end of the sleeve.

The utility model has the beneficial effects that:

the spring piece for limiting is additionally arranged at the position where the tail end of the sleeve coincides with the dispensing needle, so that the spring piece is more convenient to be matched with the dispensing needle, the dispensing needle has better binding force under the action of the expansion spring and the spring piece on the side edge in two directions, the adverse phenomena of blocking deformation, clamping tightness and the like cannot be caused in use, the problem of gaps caused by thickness errors of the dispensing needle can be adapted, the dispensing needle is effectively prevented from shaking, and the problem that the dispensing point is different in size from the dispensing point in dispensing is solved. The utility model has better stability when being applied to die bonding and dispensing of small-spacing packaged products, has good flexibility for improving the problem that a dispensing sleeve shakes and is not matched with dispensing needles of different sizes of different manufacturers, and can improve the quality problem, reduce the manufacturing cost, reduce the efficiency problem caused by speed reduction and die bonding and stably improve the efficiency by adopting the dispensing needle structure.

Drawings

FIG. 1 is a schematic view of a dispensing needle structure according to the present invention;

FIG. 2 is a schematic top view of a spring plate disposed at the end of a sleeve in another embodiment;

FIG. 3 is a schematic view of a dispensing needle structure fixed on a dispensing arm;

in the figure: sleeve 1, point glue needle 2, expanding spring 3, spring leaf 4, point glue arm 5, adjusting nut 6.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

Traditional sleeve only has expanding spring to do the support, and the inner space clearance between some glue needle and the sleeve end is big, and when some glue, the clearance about with rock the not scheduling problem performance of gluing some partial sizes that leads to obvious, the decomposition delay parameter of remedying to this in the solid brilliant parameter will increase, is unfavorable for the development of trade now, has reduced work efficiency.

Example 1:

as shown in fig. 1, in order to solve the above-mentioned problem, a dispensing needle structure is provided, including being used for fixing sleeve 1 on dispensing arm 5, sleeve 1 is top seal, inside hollow cylinder, dispensing needle 2 arranges in sleeve 1 and through expanding spring 3 and sleeve 1 telescopic connection, the inboard top at sleeve 1 is fixed to expanding spring 3's one end, the other end and dispensing needle 2's top fixed connection, dispensing needle 2's most advanced stretches out sleeve 1's bottom, and sleeve 1's bottom inner wall is equipped with and is used for carrying out spacing locating part to dispensing needle 2's needle body.

When solid brilliant machine drive dispensing arm 5 carries out the point and glues, expanding spring 3 makes point glue needle 2 possess certain buffering elasticity, avoids damaging the PCB board of being glued by the point, and simultaneously, sleeve 1 and the locating part of the clearance setting between the point glue needle 2 avoid point glue needle 2 to take place to rock relative sleeve 1, and the clearance problem of needle 2 thickness error is glued to the adaptation point, improves the gluey problem of dot size difference that the point caused when gluing partially.

Referring to fig. 1, in the present embodiment, the limiting member includes a spring plate 4, the spring plate 4 is a thin steel product, two spring plates 4 are symmetrically disposed on the inner wall of the bottom end of the sleeve 1, two ends of the spring plate 4 are welded and fixed on the inner wall of the bottom end of the sleeve 1, and the middle portion of the spring plate is bent outward to form an arch structure, the highest point of the arch structure contacts with the needle body of the dispensing needle 2, so as to limit the needle body of the dispensing needle 2 from two sides. Two arched spring pieces 4 are arranged on two sides of the inner wall of the sleeve 1 and used for limiting the dispensing needle 2, the dispensing needle 2 is prevented from shaking relative to the sleeve 1 when the dispensing needle 2 is not influenced to stretch and dispense, and dispensing precision is improved.

As shown in fig. 2, in the present embodiment, another arrangement of the spring plate 4 is as follows: four spring pieces 4 are uniformly arranged on the inner wall of the bottom end of the sleeve 1 along the peripheral side, and the needle body of the dispensing needle 2 is limited from the periphery. Four arched spring pieces 4 are used for limiting the dispensing needle 2 on the periphery, so that shaking is further prevented, and the dispensing precision is improved.

As shown in fig. 3, in the present embodiment, the outer peripheral wall of the sleeve 1 is provided with external threads for screwing with the screw holes of the dispensing arm 5, and the sleeve 1 is fastened to the dispensing arm 5 by screwing, so that it is easy to assemble and disassemble. And the top that sleeve 1 passed out the screw of point gluey arm 5 is equipped with adjusting nut 6 that is used for adjusting sleeve 1 extension length, and the accessible is twisted adjusting nut 6 soon and is adjusted sleeve 1 extension length relative to point gluey arm 5, and then realizes the point of adjustment point gluey needle 2 and glues the position.

In this embodiment, the sleeve 1, the extension spring 3, and the spring piece 4 are made of stainless steel, which is characterized by firmness, difficult deformation, rust resistance, etc.

The spring piece 4 for limiting is additionally arranged at the position where the tail end of the sleeve 1 coincides with the dispensing needle 2, so that the dispensing needle can be more matched with the dispensing needle, the dispensing needle 2 has better binding force under the action of the telescopic spring 3 and the spring piece 4 on the side edge in two-way jacking, the adverse phenomena of blocking deformation, loose clamping and the like cannot be caused in use, the problem of gaps among thickness errors of the dispensing needle 2 can be adapted, the shaking of the dispensing needle 2 is effectively prevented, and the problem of different sizes of glue dots caused by point deviation in dispensing is solved. The utility model has better stability when being applied to die bonding and dispensing of small-spacing packaged products, has good flexibility for improving the problem that a dispensing sleeve shakes and is not matched with dispensing needles of different sizes of different manufacturers, and can improve the quality problem, reduce the manufacturing cost, reduce the efficiency problem caused by speed reduction and die bonding and stably improve the efficiency by adopting the dispensing needle structure.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a point is glued needle structure, its characterized in that, is including being used for fixing sleeve (1) on gluing arm (5) and point glue needle (2) of the flexible setting in sleeve (1), the pointed end of point glue needle (2) stretches out the bottom of sleeve (1), just the bottom inner wall of sleeve (1) is equipped with and is used for right the needle body of point glue needle (2) carries out spacing locating part.

2. The dispensing needle structure according to claim 1, wherein the sleeve (1) is a cylinder with a sealed top and a hollow interior, the dispensing needle (2) is disposed in the sleeve (1) and is telescopically connected with the sleeve (1) through a telescopic spring (3), one end of the telescopic spring (3) is fixed at the top end of the inner side of the sleeve (1), and the other end of the telescopic spring is fixedly connected with the top end of the dispensing needle (2).

3. The dispensing needle structure according to claim 2, wherein the limiting member comprises a spring plate (4), two ends of the spring plate (4) are fixed on the inner wall of the bottom end of the sleeve (1), and the middle part of the spring plate is bent outwards to form an arch structure, and the highest point of the arch structure is in contact with the needle body of the dispensing needle (2).

4. A dispensing needle structure according to claim 3, wherein the inner wall of the bottom end of the sleeve (1) is symmetrically provided with two spring pieces (4) for limiting the needle body of the dispensing needle (2) from two sides.

5. The dispensing needle structure according to claim 3, wherein four spring strips (4) are uniformly arranged on the inner wall of the bottom end of the sleeve (1) along the peripheral side, and the dispensing needle body (2) is limited from the periphery.

6. The dispensing needle structure according to claim 2, characterized in that the outer peripheral wall of the sleeve (1) is provided with an external thread for threaded connection with a threaded hole of the dispensing arm (5).

7. The dispensing needle structure according to claim 6, wherein the top of the screw hole of the dispensing arm (5) through which the sleeve (1) passes is provided with an adjusting nut (6) for adjusting the extension length of the sleeve (1).

8. The dispensing needle structure according to claim 1, wherein the sleeve (1) is made of stainless steel.

9. The dispensing needle structure according to claim 2, wherein the retractable spring (3) is made of stainless steel.

10. A dispensing needle structure according to claim 3, wherein the spring plate (4) is a steel sheet, and both ends of the spring plate (4) are welded to the inner wall of the bottom end of the sleeve (1).