CN203791142U - High-precision dispensing valve for COB (Chip On Board) - Google Patents
High-precision dispensing valve for COB (Chip On Board) Download PDFInfo
- Publication number
- CN203791142U CN203791142U CN201320643161.3U CN201320643161U CN203791142U CN 203791142 U CN203791142 U CN 203791142U CN 201320643161 U CN201320643161 U CN 201320643161U CN 203791142 U CN203791142 U CN 203791142U
- Authority
- CN
- China
- Prior art keywords
- valve seat
- valve
- slideway
- sealing ring
- communicated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a high-precision dispensing valve for a COB (Chip On Board). The high-precision dispensing valve comprises a valve seat (4), a pump body (5) and a connecting part fixedly connected on the outer side surface of the valve seat, wherein a slideway (6) communicated with the valve seat (4) is arranged in the pump body, an injection rod (1) in sliding matching with the slideway is arranged in the slideway adaptively, a draining joint (7) is communicated to the bottom of the valve seat, a valve core assembly for controlling connection and disconnection of the valve seat and the draining joint is arranged in the valve seat, the connecting part comprises a liquid inlet channel (8) communicated with the valve seat, one end of the liquid inlet channel (8), away from the valve seat, is provided with an exhaust hole, and an exhaust screw (9) is arranged on the exhaust hole adaptively. The high-precision dispensing valve has the beneficial effects that the exhaust hole and the exhaust screw are arranged on the liquid inlet channel and are beneficial to exhausting before dispensing, so as to ensure the stable work of the dispensing valve; a first sealing ring, a second sealing ring and the slideway between the first sealing ring and the second sealing ring are matched to achieve the effects of draining residual liquid in the valve body and sealing; due to the valve core assembly and a turning stem on the valve core, the valve seat and the draining joint can be connected and disconnected conveniently and rapidly.
Description
Technical field
The utility model relates to glue dispensing valve, relates in particular to COB high-precision glue-dispensing valve.
Background technology
COB(chip on board), the one of chip surface encapsulation technology, i.e. semiconductor chip handing-over is mounted on printed substrate, lead-in wire sewing method realization for the electrical connection of chip and substrate, and cover to guarantee reliability with resin.Along with the rise of China COB industry, COB industry is increasing to the demand of COB encapsulation point gum machine, precision prescribed is also more and more higher, compared with COB encapsulates with traditional LED, the glue quantity of COB encapsulation is a lot, higher to the exhaust requirements before a glue, traditional glue dispensing valve capacity is less, exhaust performance is poor, cannot meet above-mentioned requirements at all, and disassembly, cleaning are also inconvenient.
Utility model content
The technical problems to be solved in the utility model is that the existing glue dispensing valve packaging plastic water yield is few, exhaust performance does not reach requirement, and disassembly, cleaning are also inconvenient, are not suitable for COB and directly use, and a kind of COB high-precision glue-dispensing valve is provided for this reason.
The technical solution of the utility model is: COB high-precision glue-dispensing valve, it comprises valve seat, the pump housing and is fixed in the connecting portion on valve seat lateral surface, in the described pump housing, be provided with the slideway being communicated with valve seat, in slideway, adaptation has the injection rod being slidably matched with slideway, described valve seat bottom is communicated with draining connector, in described valve seat, be provided with the core assembly of energy control valve seat and draining connector break-make, described connecting portion comprises and the feed pathway being connected with valve seat, described feed pathway is provided with steam vent away from one end of valve seat, and on described steam vent, adaptation has exhaust bolt.
The improvement of such scheme is that described slideway inside top is provided with the first sealing ring and the second sealing ring, described the first sealing ring is positioned at the second sealing ring upside for stoping described injection rod to depart from slideway, and described the second sealing ring, slideway and feed pathway form the cavity of sealing.
The further improvement of such scheme is that the slideway between described the first sealing ring and the second sealing ring is provided with the apocenosis passage being in communication with the outside.
Core assembly described in such scheme comprises and valve pocket and be fixed in the spool in valve pocket on described valve pocket and spool, is equipped with the passage being communicated with draining connector, described spool and valve pocket formation be rotatably assorted make valve seat with draining connector in being communicated with or dissengaged positions.
Further improving of such scheme is that described spool is provided with the turning handle of being convenient to screw spool.
Further improving again of such scheme is that between described exhaust bolt and feed pathway, adaptation has gasket seal.
The beneficial effects of the utility model are in feed pathway, to be provided with steam vent and exhaust bolt is conducive to the exhaust before a glue, ensure the steady operation of glue dispensing valve; The first sealing ring, the second sealing ring and slideway between the two thereof coordinate has realized the effect of discharging residual liquid and sealing in valve body; Turning handle on design and the spool thereof of core assembly makes the break-make fast and easy of control valve seat and draining connector.
Brief description of the drawings
Fig. 1 is the utility model schematic diagram;
Fig. 2 is the side view of Fig. 1;
In figure, 1, injection rod, 2, the first sealing ring, 3, the second sealing ring, 4, valve seat, 5, the pump housing, 6, slideway, 7, draining connector, 8, feed pathway, 9, exhaust bolt, 10, valve pocket, 11, spool.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1 and Figure 2, the utility model comprises valve seat 4, the pump housing 5 and is fixed in the connecting portion on valve seat lateral surface, in the described pump housing, be provided with the slideway 6 being communicated with valve seat, in slideway, adaptation has the injection rod 1 being slidably matched with slideway, described valve seat bottom is communicated with draining connector 7, in described valve seat, be provided with the core assembly of energy control valve seat and draining connector break-make, described connecting portion comprises and the feed pathway 8 being connected with valve seat, described feed pathway is provided with steam vent away from one end of valve seat, and on described steam vent, adaptation has exhaust bolt 9.
Injection rod can be to be driven by stepper motor, tell glue to realize high accuracy, insert from top to bottom in described slideway, and the bar head process of injection rod goes out in slideway outside, the upper end of slideway is provided with the sealing device matching with the shaft of injection rod, the pump housing is divided into two sections by sealing device, sealing device can be the first sealing ring 2 and the second sealing ring 3, wherein the first sealing ring is positioned at the second sealing ring upper end, namely with respect to the more close slideway of the second sealing ring top, in the time that injection rod upwards detaches slideway, the first sealing ring can stop injection rod to depart from slideway, and be provided with the apocenosis passage being in communication with the outside in the slideway between the first sealing ring and the second sealing ring, for discharging the residual liquid of putting glue in the pump housing last time, the slideway of the second sealing ring and below thereof and feed pathway have formed airtight cavity, for extracting the liquid in feed pathway.
When injection rod is installed, be provided with pressing plate at the top of the first sealing ring, one end of pressing plate is pressed and is fixed on the upper surface of the pump housing, and pressing plate presses end face and is provided with the hole of passing for the shaft of injection rod, and both sides are provided with the screw fixing with the pump housing.
Said structure is good airproof performance not only, and the installation that is conducive to the pump housing fixes, and contributes to the steady operation of this glue dispensing valve.
Feed pathway can be fixed by screws on the lateral surface of the pump housing, also can be fixed on the lateral surface of the pump housing by bolt, riveted joint, link.
Core assembly is made up of valve pocket 10 and the spool 11 being fixedly connected in valve pocket, on valve pocket and spool, be equipped with the passage being communicated with draining connector, spool is provided with the turning handle of being convenient to screw spool, rotate turning handle, spool is rotated with respect to valve pocket, blocked the connected relation of valve pocket and spool and draining connector, liquid can not be discharged from draining connector, again rotate, the passage on valve pocket and spool is connected with draining connector, can discharge from draining connector for liquid.
Spool and valve pocket preferably ceramic material, ensure the sealing between the two, and improved the service life of core assembly.
Between feed pathway and valve seat, be provided with seal washer, between exhaust bolt and feed pathway, adaptation has gasket seal, between the pump housing and valve seat, is provided with sealing ring, improves overall tightness of the present utility model.
Draining connector assembly comprises draining connector affixed with valve seat and that be connected with pin mouth, is provided with the passage being connected with the passage in valve pocket in draining connector; All sides of draining connector are provided with internal thread female Luer and knurled nut from inside to outside successively; Between draining connector and valve seat, be provided with seal washer.
While using the utility model, first make valve core rotation and make valve seat and draining connector the two in dissengaged positions, then on injection rod, move the colloid being stored in feed pathway is sucked in valve seat and slideway, now make valve core rotation commutate to make valve seat and draining connector the two in connected state, drive injection rod to press down by stepper motor again, colloid is spued by the pin mouth being connected with draining connector, after colloid has spued, spool again Rotation With Changing to, at this moment valve seat and feed pathway communicate, injection rod return, colloid is sucked in valve seat and slideway again, to complete one-off circulation.
By reference to the accompanying drawings the utility model is exemplarily described above; obviously the utility model specific implementation is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technical scheme carry out; or without improving, design of the present utility model and technical scheme are directly applied to other occasion, all within protection domain of the present utility model.
Claims (6)
1.COB high-precision glue-dispensing valve, it comprises valve seat (4), the pump housing (5) and be fixed in the connecting portion on valve seat lateral surface, in the described pump housing, be provided with the slideway (6) being communicated with valve seat, in slideway, adaptation has the injection rod (1) being slidably matched with slideway, described valve seat bottom is communicated with draining connector (7), in described valve seat, be provided with the core assembly of energy control valve seat and draining connector break-make, it is characterized in that described connecting portion comprises and the feed pathway (8) being connected with valve seat, described feed pathway is provided with steam vent away from one end of valve seat, on described steam vent, adaptation has exhaust bolt (9).
2. COB high-precision glue-dispensing valve as claimed in claim 1, it is characterized in that described slideway inside top is provided with the first sealing ring (2) and the second sealing ring (3), described the first sealing ring is positioned at the second sealing ring upside for stoping described injection rod to depart from slideway, and described the second sealing ring, slideway and feed pathway form the cavity of sealing.
3. COB high-precision glue-dispensing valve as claimed in claim 2, is characterized in that the slideway between described the first sealing ring and the second sealing ring is provided with the apocenosis passage being in communication with the outside.
4. COB high-precision glue-dispensing valve as claimed in claim 3, it is characterized in that described core assembly comprises valve pocket (10) and is fixed in the spool (11) in valve pocket, on described valve pocket and spool, be equipped with the passage being communicated with draining connector, described spool and valve pocket form be rotatably assorted make valve seat with draining connector in being communicated with or dissengaged positions.
5. COB high-precision glue-dispensing valve as claimed in claim 4, is characterized in that described spool is provided with the turning handle of being convenient to screw spool.
6. the COB high-precision glue-dispensing valve as described in as arbitrary in claim 1-5, is characterized in that between described exhaust bolt and feed pathway, adaptation has gasket seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320643161.3U CN203791142U (en) | 2013-10-18 | 2013-10-18 | High-precision dispensing valve for COB (Chip On Board) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320643161.3U CN203791142U (en) | 2013-10-18 | 2013-10-18 | High-precision dispensing valve for COB (Chip On Board) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203791142U true CN203791142U (en) | 2014-08-27 |
Family
ID=51373417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320643161.3U Expired - Fee Related CN203791142U (en) | 2013-10-18 | 2013-10-18 | High-precision dispensing valve for COB (Chip On Board) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203791142U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500813A (en) * | 2014-12-12 | 2015-04-08 | 刘建芳 | Sliding type piezoelectric valve used for discharging particle-contained liquid |
| CN105583122A (en) * | 2014-10-24 | 2016-05-18 | 富鼎电子科技(嘉善)有限公司 | Automatic dispensing device |
-
2013
- 2013-10-18 CN CN201320643161.3U patent/CN203791142U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105583122A (en) * | 2014-10-24 | 2016-05-18 | 富鼎电子科技(嘉善)有限公司 | Automatic dispensing device |
| CN104500813A (en) * | 2014-12-12 | 2015-04-08 | 刘建芳 | Sliding type piezoelectric valve used for discharging particle-contained liquid |
| CN104500813B (en) * | 2014-12-12 | 2017-02-01 | 刘建芳 | Sliding type piezoelectric valve used for discharging particle-contained liquid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103682240B (en) | Battery manufacturing equipment and without chamber vacuum pumping device and vacuumize method for packing | |
| CN203791142U (en) | High-precision dispensing valve for COB (Chip On Board) | |
| CN203582439U (en) | Vacuum filling device for electronic packaging glue | |
| CN103495525A (en) | High-precision dispensing valve for COB | |
| CN203594568U (en) | Dual-purpose photovoltaic water pumping device | |
| CN203644871U (en) | Battery manufacturing device and cavity-free vacuum liquid extracting device thereof | |
| CN102688834A (en) | High-precision light-emitting diode (LED) dispenser | |
| CN102327841B (en) | High-accuracy adhesive dispensing valve | |
| CN201038227Y (en) | Battery vacuum liquid injection device | |
| CN104167304B (en) | A kind of multistation liquid-filling valve and multistation electrolyte filling method | |
| CN203488461U (en) | Continuous feeding device for hydraulic system | |
| CN202606357U (en) | Injection glue spitting type glue dispensing valve | |
| CN202483859U (en) | Self-circulating water cooling device | |
| CN202180028U (en) | High-precision adhesive dispensing valve | |
| CN108851861A (en) | A kind of multi-functional tumbler water cup device | |
| CN204604701U (en) | A kind of general purpose epoxy resin encapsulating device | |
| CN107378178A (en) | Portable solder sucker | |
| CN104752237B (en) | A kind of controllable silicon method for packing and encapsulating mould | |
| CN203509490U (en) | Lead sealing mechanical hand for electric energy meter automatic assembling line | |
| CN201512128U (en) | Control device of vacuum package machine | |
| CN202667087U (en) | High-precision LED (Light Emitting Diode) adhesive dispenser | |
| CN208610726U (en) | A kind of induction soap device | |
| CN210585662U (en) | Precision AB double-liquid valve | |
| CN102698928B (en) | Injection adhesive spitting-type dispensing valve | |
| CN204144062U (en) | Multistation liquid-filling valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 Termination date: 20181018 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |