CN104941875B - A kind of adjustable contactless high-speed injection valve of stroke - Google Patents

A kind of adjustable contactless high-speed injection valve of stroke Download PDF

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Publication number
CN104941875B
CN104941875B CN201510412050.5A CN201510412050A CN104941875B CN 104941875 B CN104941875 B CN 104941875B CN 201510412050 A CN201510412050 A CN 201510412050A CN 104941875 B CN104941875 B CN 104941875B
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CN
China
Prior art keywords
stroke
striker
nozzle
firing pin
valve
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CN201510412050.5A
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Chinese (zh)
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CN104941875A (en
Inventor
林东明
黄成亮
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深圳市赛派斯工业设备有限公司
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Priority to CN201510412050.5A priority Critical patent/CN104941875B/en
Publication of CN104941875A publication Critical patent/CN104941875A/en
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Abstract

The invention discloses a kind of adjustable contactless high-speed injection valve of stroke, electromagnetic valve component passes through including high-speed electromagnetic valve, electromagnetism valve base, high-speed electromagnetic valve is fixedly mounted on electromagnetism valve base, the high-speed electromagnetic valve connects air inlet pipe, cracking pressure tracheae connects a compaction cavum, and compaction cavum opposite side is provided with piston apparatus;The piston apparatus connects stroke component, and the stroke component connects firing pin assembly, and the striker periphery of the firing pin assembly bottom is glue channel, and glue channel connects with the supply assembly on right side;The firing pin assembly end is connected with nozzle assembly;After the high-speed electromagnetic valve work, open the valve at compaction cavum, the compressed air of cracking pressure tracheae connection enters compaction cavum, piston apparatus is promoted to move upwards, piston apparatus drives stroke component to move upwards, and stroke component drives firing pin assembly to move upwards, striker moves upwards with firing pin assembly, striker separates with nozzle pad, and fluid enters nozzle pad, then is flowed outwardly through nozzle.

Description

A kind of adjustable contactless high-speed injection valve of stroke

Technical field

The present invention relates to injection apparatus technical field, particularly relates to a kind of adjustable contactless high speed spray of stroke Penetrate valve.

Background technology

Existing injection valve generally comprises nozzle, striker, hot-melt adhesive device and cylinder, and hot-melt adhesive device includes housing, shell Hot melt glue chamer body is formed in vivo, and housing is provided with the charging aperture connected with hot melt glue chamer body, nozzle and hot-melt adhesive device housing Bottom is fixedly connected, and the lower end with heating glue chamer body is docked and connected;The striker is arranged in hot melt glue chamer body, and cylinder is located at Hot-melt adhesive device top, the cylinder body of cylinder are fixedly connected with hot-melt adhesive device, and striker is fixedly connected with the piston of cylinder, the gas The return spring being provided with cylinder between the cylinder body and piston acted on.During work, PUR to be sprayed passes through charging aperture hot melt Glue chamer body is fed, while starts cylinder, and piston moves up, and striker moves up therewith, and the passage that hot melt glue chamer body leads to nozzle is beaten Open, PUR to be sprayed enters nozzle by heating glue chamer body, now closes cylinder, striker is under the elastic force effect of return spring Reset so that the PUR to be sprayed into nozzle is ejected.

Traditional injection valve often produces following failure:

1. nozzle not plastic emitting.

2. easy kiss-coating.

3. glue splashes, there is satellite point.

4. glue water clock.

5. dispensing uniformity is poor.

6. compressed air leakage.

Therefore, in order that dispensing can be carried out sequentially, dispensing quality reaches pre-provisioning request, and traditional injection valve needs to change Enter.

The content of the invention

For deficiency of the prior art, it is adjustable non-that the technical problem to be solved in the present invention is the provision of a kind of stroke Contact high-speed injection valve, high-speed injection valve of the present invention is in the closed position under a normality, by compressed air-driven, pretension The adjustable non-contact injecting type glue valve of power, stroke.It realizes the dispensing of adhesive using energy conversion principle.

In order to solve the above technical problems, the present invention is realized by following scheme:A kind of adjustable contactless height of stroke Fast injection valve, the high-speed injection valve include:

Electromagnetic valve component, stroke component, firing pin assembly, supply assembly, nozzle assembly;

The electromagnetic valve component including high-speed electromagnetic valve, electromagnetism valve base, high-speed electromagnetic valve by being fixedly mounted on electromagnetism On valve base, the high-speed electromagnetic valve connects air inlet pipe, and cracking pressure tracheae connects a compaction cavum, compaction cavum opposite side peace Equipped with piston apparatus;

The piston apparatus connects stroke component, and the stroke component connects firing pin assembly, the firing pin assembly bottom Striker periphery is glue channel, and glue channel connects with the supply assembly on right side;

The firing pin assembly end is connected with nozzle assembly;

After the high-speed electromagnetic valve work, the valve at compaction cavum, the compressed air of cracking pressure tracheae connection are opened Into compaction cavum, piston apparatus is promoted to move upwards, piston apparatus drives stroke component to move upwards, and stroke component drives and hit Needle assemblies move upwards, and striker moves upwards with firing pin assembly, and striker separates with nozzle pad, and fluid enters nozzle pad, then through spray Mouth flows outwardly.

Further, the stroke component includes stroke adjustment seat, spring, pretightning force regulation ring, the stroke adjustment seat For inverted T-shaped body, spring is placed on the vertical cylinder of T-shaped body of stroke adjustment seat, and pretightning force is connected on stroke adjustment seat top Regulation ring, screw or unclamp pretightning force regulation ring, the position of stroke adjustment seat can be changed, and then spring-compressed or pine can be made Open, spring bottom end is withstood at the platform rafter of stroke adjustment seat lower end, and the position by changing stroke adjustment seat can realize that spring is pre- Clamp force size, so as to change the acceleration that striker moves downward.

Further, the stroke component upper end is provided with stroke regulating handle, can by rotating distance regulation handle Change the stroke adjustment seat position overall with spring, the setting of firing pin assembly move distance can be realized, and then spray can be changed The gel quantity of nozzle assembly.

Further, the junction of the firing pin assembly and stroke component is provided with striker pad, and firing pin assembly upper semisection is Striker sleeve, striker are installed in striker sleeve, and striker sleeve has the function that to orient striker, striker is not offset.

Further, the supply assembly includes syringe, glue storage chamber, is set between syringe and the glue storage chamber There is a piston, piston upper end cavity connection feed pressure tracheae, glue storage chamber is stored with glue, under the glue storage chamber Portion connects glue channel on glue exit normal direction, and the glue channel is extended at striker, is connected with striker peripheral clearance.

Further, the nozzle assembly includes nozzle pad, nozzle, and the nozzle pad is provided with plastic hole, is placed in nozzle Upside, under high-speed injection valve off working state, the end of striker holds out against the plastic emitting hole plug in nozzle pad, making nozzle pad.

Further, the high-speed electromagnetic valve upper end connection power line.

Relative to prior art, the beneficial effects of the invention are as follows:The present invention is a non-contact injecting type high-speed injection valve, To various liquid surface adhesives, conductive silver paste, IC package glue, underfill, fluid sealant, surface coating material glue etc. The flow-controllable of all kinds of adhesive, high speed dispensing operation.Small to hundred microns of narrow space can be injected, also can be in specified location Complete accurate dispensing of the weight to 0.02 milligram of rank.Completely compatible various automation dispensing platforms, in Electronic Packaging industry, shine Bright industry, energy industry, Life Science and other need high accuracy, high efficiency and have space limit occasion brought for client Maximum economic benefit.

Brief description of the drawings

In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with Other accompanying drawings are obtained according to these accompanying drawings.

Fig. 1 is that high-speed injection valve structure of the present invention closes schematic diagram.

Fig. 2 is schematic diagram after high-speed injection valve structure of the present invention is opened.

Fig. 3 is high-speed injection valve of the present invention and outside pipe and power line connection diagram.

Marked in accompanying drawing:Pretightning force regulation ring 1, stroke adjustment seat 2, striker pad 3, firing pin assembly 4, nozzle pad 5, nozzle 6, Spring 7, high-speed electromagnetic valve 8, glue 9, syringe 10, stroke regulating handle 11, cracking pressure tracheae 12, power line 13, feed pressure Strength pipe 14.

Embodiment

The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, so that advantages and features of the invention energy It is easier to be readily appreciated by one skilled in the art, apparent is clearly defined so as to be made to protection scope of the present invention.

Accompanying drawing 1~3, a kind of adjustable contactless high-speed injection valve of stroke are refer to, the high-speed injection valve includes:

Electromagnetic valve component, stroke component, firing pin assembly 4, supply assembly, nozzle assembly;

The electromagnetic valve component including high-speed electromagnetic valve 8, electromagnetism valve base, high-speed electromagnetic valve 8 by being fixedly mounted on electricity On magnet valve valve seat, the high-speed electromagnetic valve 8 connects air inlet pipe 12, and cracking pressure tracheae 12 connects a compaction cavum, compaction cavum Opposite side is provided with piston apparatus;The piston apparatus connects stroke component, and the stroke component connects firing pin assembly 4, described The striker periphery of the bottom of firing pin assembly 4 is glue channel, and glue channel connects with the supply assembly on right side;The firing pin assembly 4 End is connected with nozzle assembly;After the high-speed electromagnetic valve 8 works, the valve at compaction cavum, cracking pressure tracheae 12 are opened The compressed air of connection enters compaction cavum, promotes piston apparatus to move upwards, and piston apparatus drives stroke component to move upwards, Stroke component drives firing pin assembly 4 to move upwards, and striker moves upwards with firing pin assembly 4, and striker separates with nozzle pad 5, fluid Flowed outwardly into nozzle pad 5, then through nozzle 6.The stroke component includes stroke adjustment seat 2, spring 7, pretightning force regulation ring 1, the stroke adjustment seat 2 is inverted T-shaped body, and spring 7 is placed on the vertical cylinder of T-shaped body of stroke adjustment seat 2, is adjusted in stroke The top of seat 2 connection pretightning force regulation ring 1 is saved, screws or unclamps pretightning force regulation ring 1, the position of stroke adjustment seat 2 can be changed, And then spring 7 can be made to compress or unclamp, the bottom of spring 7 is withstood at the platform rafter of the lower end of stroke adjustment seat 2, is adjusted by changing stroke The position of section seat 2 can realize the pretightning force size of spring 7, so as to change the acceleration that striker moves downward.The stroke component Upper end is provided with stroke regulating handle 11, and it is overall with spring 7 to change stroke adjustment seat 2 by rotating distance regulation handle 11 Position, the setting of firing pin assembly move distance can be realized, and then the gel quantity of nozzle assembly can be changed.The striker group The junction of part 4 and stroke component is provided with striker pad 3, and the upper semisection of firing pin assembly 4 is striker sleeve, and striker installs striker sleeve Interior, striker sleeve has the function that to orient striker, striker is not offset.The supply assembly includes syringe 10, glue stores Chamber 9, a piston being provided between the syringe 10 and glue storage chamber 9, piston upper end cavity connects feed pressure tracheae 14, Glue storage chamber 9 is stored with glue, connects glue channel on the bottom glue exit normal direction of glue storage chamber 9, the glue Aquaporin is extended at striker, is connected with striker peripheral clearance.The nozzle assembly includes nozzle pad 5, nozzle 6, the nozzle Pad 5 is provided with plastic hole, is placed in the upside of nozzle 6, under high-speed injection valve off working state, the end of striker is held out against in nozzle pad 5, make the plastic emitting hole plug of nozzle pad 6.The upper end of high-speed electromagnetic valve 8 connects power line 13.

Under normal circumstances, injection valve firing pin assembly 4 presses with nozzle pad 5 under the pretightning force effect of spring 7, prevents stream Body flows out, and is closed, and fluid is under pressure full of the gap between firing pin assembly and cavity.In opening for magnetic valve Close control under, compressed air enter valve body in, promote firing pin assembly 4 move upwards, until with 2 times end in contact of stroke adjustment seat, And one section of reasonable time is stopped in this position, now, striker separates with nozzle pad 5, and fluid enters nozzle pad 5.

Work as solenoid closure, striker is under the active force of spring 7, fast ram nozzle pad 5, by the precompressed potential energy of spring 7 The kinetic energy that striker moves downward is converted to, fluid is cut off in flow process, passes through fluid with glue drop-wise in closure moment Nozzle 6 ejects, and completes a work period.

For different fluid behaviours, it is necessary to which the pretightning force of glue valve is set and adjusted with stroke.High-speed injection valve Pretightning force it is separately adjustable with travel parameters, be independent of each other.It can realize that spring 7 is pre- by the position of rotating distance adjustment seat 2 Clamp force size, so as to change the acceleration that striker moves downward;Striker group can be realized by the position of rotating distance adjustment seat 2 The setting of the move distance of part 4, reach the purpose for changing gel quantity.

Feed pressure and the size of supply gas pressure directly affect glue valve effect for dispensing glue, and feed pressure is too small, and fluid can not Full of nozzle pad 5 and nozzle 6;Feed pressure is too big, in valve opening moment, is directly flowed out from nozzle 6, it is impossible to forms injection.Supply The size of pressure will be enough to ensure that firing pin assembly can smoothly move up and down.

Nozzle pad 5, nozzle 6 and and corresponding firing pin assembly 4 physical dimension be not both control point flow adhesive it is main because Element, the configuration of other specification are also to be set according to three's specification size.So should be special according to practical situations and glue The difference of property, select the nozzle assembly of appropriate size.

The fluid for being affected by temperature and changing for viscosity, improve the rheological characteristic of fluid using heating component, make fluid It is more easy to be switched " off " in course of injection.

The make-and-break time of magnetic valve controls the working frequency of injection valve.When empty full of compression in electricity on magnetic valve, valve body Gas and promote piston upwards, realize valve opening.Conversely, closed under pre-pressure of the spring.The make-and-break time of magnetic valve can not be small In the response time, otherwise can not work.

Frictional resistance between piston and valve interior wall, striker and guide bearing, the mechanical response of moving component can be influenceed Time, so as to influence the uniformity of glue amount.Frictional resistance should be minimized periodically to being lubricated, safeguarding in valve body.

The injection valve of appropriate size, configuration is fixed on motion platform, according to the applicable cases of reality, syringe is installed 10th, the feeder means such as cassette glue bucket or pressurized tank, cracking pressure tracheae 12 and feed pressure tracheae in connection, if it is necessary, Heating component is installed, and is connected with control system.Before formal use, gas circuit closing, air pressure 0 are reviewed and validate. Glue valve control is closed.A charge cup for holding raffinate is placed below in glue valve.

Keep the continuous supply gas pressure of valve opening air pressure all non-in the uniformity that at least 85psi drips for the realization of injection, glue It is often important.The viscosity of fluid, the difference of rheological property and the setting for getting parameter ready, it is also different to the size of valve opening air pressure. Generally, valve opening air pressure is set between 90-95psi.The fluctuation of general factory air pressure is larger, to ensure valve opening air pressure Continuous voltage supply stability is, it is necessary to connect supercharging stable-pressure device, such as booster pump.Set feed pressure 15Psi, according to the viscosity of fluid with And glue amount demand and it is different, be generally kept between 10~20Psi;Pretightning force and striker stroke are to separate adjustment, and There is graduation indication alone.When adjusting pretightning force, stroke can change therewith, and adjust stroke and do not interfere with pretightning force then.Use Special spanner carries out pretightning force regulation.The pretightning force that turns clockwise increases, and rotate counterclockwise pretightning force reduces.Generally, Pretightning force scale is between 10~20 lattice.The size of stroke influences the uninterrupted of glue drop.Wherein, turn clockwise stroke adjustment Handle increases stroke, reduces stroke counterclockwise.Often move table rows journey change 0.05mm.In the course of the work, due in fluid The accumulation of particle or solid impurity in nozzle flow channel, may result in spray nozzle clogging, so that can not plastic emitting.Such a situation Under, please it is stopped immediately, the step of according to foregoing simple-to-maintain, nozzle is removed, confirms spray nozzle clogging under the microscope.Examination With air gun from the up blowback of nozzle glue-extruding end, (can not being blown from glue end is entered toward glue-extruding end), then part is put into equipped with alcohol Ultrasonic container in clean, and under the microscope observation confirm nozzle conducting.The process blown using air gun to nozzle In, nozzle can't be touched by paying attention to the head end of air gun.

The preferred embodiment of the present invention is the foregoing is only, is not intended to limit the scope of the invention, every profit The equivalent structure or equivalent flow conversion made with description of the invention and accompanying drawing content, or directly or indirectly it is used in other phases The technical field of pass, is included within the scope of the present invention.

Claims (1)

1. a kind of adjustable contactless high-speed injection valve of stroke, it is characterised in that the high-speed injection valve includes:
Electromagnetic valve component, stroke component, firing pin assembly (4), supply assembly, nozzle assembly;
The electromagnetic valve component including high-speed electromagnetic valve (8), electromagnetism valve base, high-speed electromagnetic valve (8) by being fixedly mounted on electricity On magnet valve valve seat, high-speed electromagnetic valve (8) the connection air inlet pipe (12), cracking pressure tracheae (12) connects a compaction cavum, pressure Contracting cavity opposite side is provided with piston apparatus;
The piston apparatus connects stroke component, the stroke component connection firing pin assembly (4), firing pin assembly (4) bottom Striker periphery be glue channel, glue channel connects with the supply assembly on right side;
Firing pin assembly (4) end is connected with nozzle assembly;
After high-speed electromagnetic valve (8) work, the valve at compaction cavum is opened, the compression of cracking pressure tracheae (12) connection is empty Gas enters compaction cavum, promotes piston apparatus to move upwards, and piston apparatus drives stroke component to move upwards, and stroke component drives Firing pin assembly (4) moves upwards, and striker moves upwards with firing pin assembly (4), and striker separates with nozzle pad (5), and fluid enters spray Mouth pad (5), then flowed outwardly through nozzle (6);
The stroke component includes stroke adjustment seat (2), spring (7), pretightning force regulation ring (1), and the stroke adjustment seat (2) is Inverted T-shaped body, spring (7) are placed on the vertical cylinder of T-shaped body of stroke adjustment seat (2), are connected on stroke adjustment seat (2) top Pretightning force regulation ring (1), screw or unclamp pretightning force regulation ring (1), the position of stroke adjustment seat (2), Jin Erneng can be changed Spring (7) is enough set to compress or unclamp, spring (7) bottom is withstood at the platform rafter of stroke adjustment seat (2) lower end, is adjusted by changing stroke The position of section seat (2) can realize spring (7) pretightning force size, so as to change the acceleration that striker moves downward;
The stroke component upper end is provided with stroke regulating handle (11), can change row by rotating distance regulation handle (11) Journey adjustment seat (2) position overall with spring (7), can realize the setting of firing pin assembly move distance, and then can change spray The gel quantity of nozzle assembly;
The firing pin assembly (4) and the junction of stroke component are provided with striker pad (3), and firing pin assembly (4) upper semisection is striker Sleeve, striker are installed in striker sleeve, and striker sleeve has the function that to orient striker, striker is not offset;
The supply assembly includes syringe (10), glue storage chamber (9), is set between the syringe (10) and glue storage chamber (9) A piston, piston upper end cavity connection feed pressure tracheae (14) are equipped with, glue storage chamber (9) is stored with glue, the glue Water storage chamber (9) bottom connects glue channel on glue exit normal direction, and the glue channel is extended at striker, with striker week Side gap connects;
The nozzle assembly includes nozzle pad (5), nozzle (6), and the nozzle pad (5) is provided with plastic hole, is placed on nozzle (6) Side, under high-speed injection valve off working state, the end of striker, which is held out against, in nozzle pad (5) blocks up, the plastic hole of nozzle pad (6) Plug.
CN201510412050.5A 2015-07-14 2015-07-14 A kind of adjustable contactless high-speed injection valve of stroke CN104941875B (en)

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CN201510412050.5A CN104941875B (en) 2015-07-14 2015-07-14 A kind of adjustable contactless high-speed injection valve of stroke

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CN104941875B true CN104941875B (en) 2018-01-09

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5747102A (en) * 1995-11-16 1998-05-05 Nordson Corporation Method and apparatus for dispensing small amounts of liquid material
US6253957B1 (en) * 1995-11-16 2001-07-03 Nordson Corporation Method and apparatus for dispensing small amounts of liquid material
CN100553795C (en) * 2007-12-07 2009-10-28 华中科技大学 High viscosity fluid microscale spraying glue dropping machine
CN101844124A (en) * 2010-03-17 2010-09-29 上海大学 Ejecting adhesive dispenser based on dual-function cylinder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5747102A (en) * 1995-11-16 1998-05-05 Nordson Corporation Method and apparatus for dispensing small amounts of liquid material
US6253957B1 (en) * 1995-11-16 2001-07-03 Nordson Corporation Method and apparatus for dispensing small amounts of liquid material
CN100553795C (en) * 2007-12-07 2009-10-28 华中科技大学 High viscosity fluid microscale spraying glue dropping machine
CN101844124A (en) * 2010-03-17 2010-09-29 上海大学 Ejecting adhesive dispenser based on dual-function cylinder

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