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High-precision dispensing valve for COB

A dispensing valve, high-precision technology, used in coatings, devices that apply liquid to the surface, etc., can solve the problems of small amount of glue in the dispensing valve, inconvenient disassembly and cleaning, and unsatisfactory exhaust performance. , to achieve the effect of convenient and fast on-off

Inactive Publication Date: 2014-01-08
TONGLING FUSHI SANJIA MACHINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the existing dispensing valve has a small amount of packaging glue, the exhaust performance cannot meet the requirements, and it is inconvenient to disassemble and clean, and it is not suitable for direct use of COB. Therefore, a high-precision valve for COB is provided. Dispensing valve

Method used

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  • High-precision dispensing valve for COB
  • High-precision dispensing valve for COB

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings.

[0015] like figure 1 , figure 2 As shown, the present invention includes a valve seat 4, a pump body 5 and a connecting portion affixed to the outer surface of the valve seat. The pump body is provided with a slideway 6 communicating with the valve seat, and the slideway is adapted to slide with the slideway. The matching injection rod 1, the bottom of the valve seat is connected with the drain joint 7, and the valve seat is provided with a valve core assembly that can control the valve seat and the drain joint. There is an open liquid inlet passage 8, and the end of the liquid inlet passage away from the valve seat is provided with a vent hole, and a vent screw 9 is fitted on the vent hole.

[0016] The injection rod can be driven by a stepping motor to realize high-precision glue spit, and is inserted into the slideway from top to bottom, and the head of the injec...

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Abstract

The invention discloses a high-precision dispensing valve for COB. The high-precision dispensing valve for COB comprises a valve seat (4), a pump block (5) and a connecting part fixedly connected to the outside of the valve seat. The pump block is provided with an inner slide (6) communicated with the valve seat. An injection rod (1) in sliding fit with the slide is fitted in the slide. A drain connector (7) is communicated with the bottom of the valve seat. A spool component capable of controlling connection and disconnection between the valve seat and the drain connector is disposed inside the valve seat. The connecting part comprises an inlet passage (8) communicated with the valve seat. One end of the inlet passage, far away from the valve seat, is provided with an exhaust hole, and an exhaust screw (9) is fitted to the exhaust hole. The high-precision dispensing valve for COB has the advantages that the exhaust hole and the exhaust screw provided for the inlet passage are good for pre-dispensing exhausting and guarantee operational stability of the dispensing valve; first and second seal rings and sliding fit between the seal fits allows residual liquid to be discharged out of the valve block and the valve block to be sealed; the valve seat and the drain connector can be connected and disconnected conveniently and fast through the spool component and a stem on a spool of the spool component.

Description

technical field [0001] The invention relates to a dispensing valve, in particular to a high-precision dispensing valve for COB. Background technique [0002] COB (chip on board), a type of chip surface packaging technology, that is, the semiconductor chip is hand-attached and mounted on the printed circuit board. The electrical connection between the chip and the substrate is realized by wire stitching and covered with resin to ensure reliability. With the rise of my country's COB industry, the COB industry's demand for COB packaging dispensers is increasing, and the precision is also getting higher and higher. Compared with traditional LED packaging, COB packaging has a lot of glue. The previous exhaust requirements are relatively high, and the traditional dispensing valve has a small capacity and poor exhaust performance, which cannot meet the above requirements at all, and it is also inconvenient to disassemble and clean. Contents of the invention [0003] The technical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05C5/02B05C11/10
Inventor 陈昌太班友根
Owner TONGLING FUSHI SANJIA MACHINE
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