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Large drop liquid dispensing needle for dispensing machine

A technology of large drop point and glue dispenser, applied in the field of glue dispenser, can solve the problems of not being able to solidify too fast, limited extrusion volume, small surface tension, etc., and achieve good coating, not easy to collapse, and increase strength Effect

Active Publication Date: 2021-08-03
XIAMEN XINAOGE AUTOMATION EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Dispensing machines are used in a wide range of applications, ranging from dispensing of internal parts of mobile phones to large automobile sheets, industrial electrical parts, such as various cabinets, etc. Usually, dispensing machines are used. For large parts, more There is a lot of glue, so its dispensing usually needs to extrude larger glue droplets. Considering that the dispensing process requires pressure to squeeze the glue, and the problem that it cannot solidify too quickly, the glue with a certain degree of dilution is compared with Glue with extremely high viscosity is more friendly to the dispenser, but larger glue drops are heavy and easy to collapse under the action of gravity, especially if the glue is not too viscous; at the same time When extruding glue droplets, the surface tension of glue droplets with a certain degree of dilution is small, and it is easy to drip before the required amount of glue is extruded. Therefore, the amount of each extrusion is relatively limited, and the same position needs to be dispensed repeatedly

Method used

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  • Large drop liquid dispensing needle for dispensing machine
  • Large drop liquid dispensing needle for dispensing machine
  • Large drop liquid dispensing needle for dispensing machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] see Figures 1 to 4 , a large liquid dispensing needle for a dispensing machine, including an inner needle 11 and an outer needle 12 sleeved outside the inner needle 11; an annular cavity 13 is formed between the inner needle 11 and the outer needle 12; The front end of the inner needle 11 gradually shrinks in diameter toward its end to form an outer convex arc surface 111; the front end of the outer needle 12 is slightly shorter than the inner needle 11, and the front end of the outer needle 12 corresponds to the outer convex arc surface 111; The glue feeding mechanism supplies glue to the inner needle 11, and a liquid feeding mechanism supplies liquid to the annular cavity 13; the encapsulation liquid 16 flowing out of the annular cavity 13 flows closely to the outer convex arc surface 111 and gathers in front of the inner needle 11 to wrap Glue drop 15 extruded by inner needle 11.

[0035] Further, the enveloping liquid 16 flowing out of the annular cavity 13 is a s...

Embodiment 2

[0045] see Figures 5 to 7 , a large liquid dispensing needle for a dispensing machine, including an inner needle 11 and an outer needle 12 sleeved outside the inner needle 11; an annular cavity 13 is formed between the inner needle 11 and the outer needle 12; The front end of the inner needle 11 gradually shrinks in diameter toward its end to form an outer convex arc surface 111; the front end of the outer needle 12 is slightly shorter than the inner needle 11, and the front end of the outer needle 12 corresponds to the outer convex arc surface 111; The glue feeding mechanism supplies glue to the inner needle 11, and a liquid feeding mechanism supplies liquid to the annular cavity 13; the encapsulation liquid 16 flowing out of the annular cavity 13 flows closely to the outer convex arc surface 111 and gathers in front of the inner needle 11 to wrap The glue droplet 15 extruded by the inner needle 11; the encapsulation liquid 16 flowing out of the annular cavity 13 is the corr...

Embodiment 3

[0050] see Figures 5 to 7 , a large liquid dispensing needle for a dispensing machine, including an inner needle 11 and an outer needle 12 sleeved outside the inner needle 11; an annular cavity 13 is formed between the inner needle 11 and the outer needle 12; The front end of the inner needle 11 gradually shrinks in diameter toward its end to form an outer convex arc surface 111; the front end of the outer needle 12 is slightly shorter than the inner needle 11, and the front end of the outer needle 12 corresponds to the outer convex arc surface 111; The glue feeding mechanism supplies glue to the inner needle 11, and a liquid feeding mechanism supplies liquid to the annular cavity 13; the encapsulation liquid 16 flowing out of the annular cavity 13 flows closely to the outer convex arc surface 111 and gathers in front of the inner needle 11 to wrap Glue drop 15 extruded by inner needle 11.

[0051] Further, the elasticity of the envelope fluid 16 flowing out of the annular c...

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Abstract

The invention relates to a large liquid dispensing needle for a glue dispensing machine, comprising an inner needle and an outer needle sheathed outside the inner needle; an annular cavity is formed between the inner needle and the outer needle; the front end part of the inner needle The outer needle gradually shrinks in diameter to form an outer convex arc surface; the front end of the outer needle is slightly shorter than the inner needle, and the front end of the outer needle corresponds to the outer convex arc surface; a glue feeding mechanism supplies glue for the inner needle, and a The liquid inlet mechanism supplies liquid to the annular cavity; the liquid package flowing out of the annular cavity flows close to the outer convex arc surface and gathers in front of the inner needle to wrap the glue liquid droplets extruded by the inner needle; the dispenser uses a large The liquid dispensing needle uses a creative way to enable the dispensing machine to use a relatively dilute glue solution, so that the extruded large glue solution forms a heart-shaped glue droplet, which is not easy to collapse and maintains a good shape , large volume, the advantages of precise and adjustable glue volume.

Description

technical field [0001] The invention relates to the field of dispensing machines, in particular to a large liquid dispensing needle for a dispensing machine. Background technique [0002] Glue dispensing machine, also known as glue applicator, glue dispenser, glue machine, glue pouring machine, etc., specializes in controlling fluid. And the automatic machine that drips and coats the fluid on the surface of the product or inside the product can realize three-dimensional and four-dimensional path dispensing, precise positioning, precise glue control, no wire drawing, no glue leakage, and no glue dripping. The glue dispenser is mainly used for accurate pointing, injecting, coating, and dripping of glue, paint and other liquids in the product process to the precise position of each product, and can be used to achieve dots, lines, circles or arcs. [0003] Dispensing machines are used in a wide range of applications, ranging from dispensing of internal parts of mobile phones to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05C5/02
CPCB05C5/02
Inventor 李海滨
Owner XIAMEN XINAOGE AUTOMATION EQUIP CO LTD