CN208034709U - A kind of efficient vacuum breaker suction nozzle - Google Patents
A kind of efficient vacuum breaker suction nozzle Download PDFInfo
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- CN208034709U CN208034709U CN201820395713.6U CN201820395713U CN208034709U CN 208034709 U CN208034709 U CN 208034709U CN 201820395713 U CN201820395713 U CN 201820395713U CN 208034709 U CN208034709 U CN 208034709U
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- suction nozzle
- vacuum
- inner cavity
- push rod
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Abstract
The utility model discloses and provides a kind of simple structure and reasonable design, picks and places the efficient vacuum breaker suction nozzle of behaviour that product is stable and vacuum breaker is efficient.The utility model includes suction nozzle main body, and the suction nozzle main body is axially disposed an installation inner cavity, and intracavitary adaptation is provided with vacuum breaking device in the installation, and the vacuum breaking device is push rod thrustor or is piston-leakage port combination unit.The utility model can be used for the technical field of vacuum slot.
Description
Technical field
The utility model is related to a kind of efficient vacuum breaker suction nozzles.
Background technology
In electronic manufacturing industry, the precision that vacuum slot has been widely used in product picks and places in technique, and in part electricity
In son test and automatic test industry, due to product appearance design feature or the tactiosensible property of optics product surface, to inhaling
Mouth structure has particular/special requirement.Electronic device small especially for quality, volume is light is susceptible to brokenly true during blowing
The phenomenon that sky is inadequate, and slight vacuum negative pressure takes up product, therefore, for the discharge mechanism that takes of some electronic devices, vacuum mold
Group and its vacuum generated, vacuum breaker pressure are very sensitive.
Existing vacuum slot forms negative pressure of vacuum and vacuum breaker positive pressure by vacuum generator in suction nozzle inner cavity.When vacuum is sent out
Raw device generates vacuum, is negative pressure of vacuum in suction nozzle；When vacuum generator close vacuum, and suction nozzle surface adsorption production when, inhale
Mouth inner cavity will continue to vacuum；Vacuum generator further generates vacuum breaker air-flow, by suction nozzle inner cavity after closing vacuum
Become allowing suction nozzle to spray air-flow outward while positive pressure, product is thoroughly discharged.Wherein, vacuum breaker air-flow too senior general leads to product
Stress is excessive and unpredictable offset occurs, and vacuum breaker air-flow is too small, may cause abolish in time at the appointed time negative
Pressure.And for the special electronic device in part or semiconductor devices, especially light quality, surface is smooth, carries weak magnetic or electrostatic
Product, in fetching process faint external force i.e. may destroy vacuum breaker action, to cause to pick and place accuracy error.So making
Suction nozzle have pick and place the unstable risk of product.And a kind of product that picks and places stablizes the vacuum slot urgent need efficient with vacuum breaker
It is put into application.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of simple structure and reasonable design, pick and place product it is stable and
The efficient vacuum breaker suction nozzle of the efficient behaviour of vacuum breaker.
Technical solution used by the utility model is：The utility model includes suction nozzle main body, the suction nozzle main body edge
It is axially provided with installation inner cavity, intracavitary adaptation is provided with vacuum breaking device in the installation, and the vacuum breaking device is push rod top
Pushing device is piston-leakage port combination unit.
Further, the push rod thrustor includes the push rod being movably arranged in the installation inner cavity, the push rod
Bottom stretch out in the bottom of the suction nozzle main body, the push rod is equipped with first straight line telescoping mechanism.
Further, the installation inner cavity is to be arranged on the vacuum step inner cavity of the suction nozzle main body, the push rod
There are the matched convex block of step with vacuum step inner cavity, the first straight line telescoping mechanism adaptation to be arranged in the step
Between the convex block.
Further, the first straight line telescoping mechanism includes the first spring, and first spring is set in the push rod
On.
Further, the stretching elasticity of the first straight line telescoping mechanism meets following equation：
n* GDUT < Fs < 1/10 * min(Fvacuum),n<10 }, whereinnIt indicates by the quantity of suction product, GDUT Table
Show by suction product gravity, FsIndicate the elastic force of the first spring, FvacuumIndicate pull of vacuum in vacuum step inner cavity.
Further, limited block is provided with above the push rod, the limited block is arranged in vacuum step inner cavity
In, the length dimension of vertical range size and the push rod between the bottom of the limited block and the bottom of the suction nozzle main body
It is equal.
Further, the bottom of the push rod is provided with cushion.
Further, the piston-leakage port combination unit include the piston that is arranged in the installation inner cavity of adaptation with
Leakage port in the suction nozzle main body side is set, and the piston is matched with the leakage port, the middle part setting of the piston
There is venthole, second straight line telescoping mechanism is provided between the bottom of the piston and the bottom of the installation inner cavity.
Further, the second straight line telescoping mechanism includes second spring, the axis of the second spring and the suction
The axis of mouth main body coincides.
Further, the bottom of the suction nozzle main body is provided with several suction holes, the suction hole and the installation inner cavity
It is connected.
The beneficial effects of the utility model are：There are two scheme, the first strings to be pushed away by design for the utility model design
Bar forms the augmented thrust of efficient vacuum breaker, in addition, push rod continues to contact with product during drawing product, increases suction
Take the stability of product；And the required gas of vacuum breaker can be reduced using embedded piston cooperation leakage port in another scheme
Size is flowed, in addition, the efficiency of release product can be improved by losing heart by leakage port, and pressure drop ratio air-flow caused by natural gas leakage draws
The pressure drop risen is gentler, therefore can effectively reduce pressure drop overshoot using this mouth structure that loses heart, and improves the stability of release product.
Description of the drawings
Fig. 1 is the structural schematic diagram of embodiment one；
Fig. 2 is the structural schematic diagram of embodiment two.
Embodiment
Specific embodiment of the present utility model is：The utility model includes suction nozzle main body 1, and the suction nozzle main body 1 is along axis
To installation inner cavity 2 is provided with, it is adapted in the installation inner cavity 2 and is provided with vacuum breaking device, the vacuum breaking device is push rod top
Pushing device is piston-leakage port combination unit.
Embodiment one：The vacuum breaking device is push rod thrustor, as shown in Figure 1, in the present embodiment, the suction nozzle
1 overall appearance of main body is cylindrical, and the installation inner cavity 2 is the vacuum step inner cavity 4 axially through setting, the vacuum step
The top sectional dimension of inner cavity 4 is bigger than lower section size, so a step is formed between upper and lower part；The suction nozzle master
It is suction nozzle suction inlet that one through-hole, which is formed, on the bottom of body 1；The push rod thrustor includes being movably arranged on the installation inner cavity 2
In push rod 3, the push rod 3 can slide up and down, and the push rod 3 is used to, when vacuum breaker is discharged by suction product, form auxiliary
Thrust accelerates the time of vacuum breaker and improves release stability；The bottom of the push rod 3 passes through vacuum step inner cavity 4
The other end of lower part and the bottom for stretching out in the suction nozzle main body 1, the push rod 3 is provided with and vacuum step inner cavity 4
The matched convex block 5 of step, the convex block 5 are integrally formed with the push rod 3；The top of the push rod 3 is provided with limited block 7,
The limited block 7 is fixed in vacuum step inner cavity 4, upper limit of the limited block 7 as the push rod 3, institute
The sectional dimension for stating limited block 7 is less than the sectional dimension of vacuum step inner cavity 4, so can't the clogging vaccum bench
Rank inner cavity 4, and the limited block 7 can be cyclic annular is arranged on the cavity wall of vacuum step inner cavity 4, or it crosses
The bar blocks of vacuum step inner cavity 4；In addition, hanging down between the bottom of the limited block 7 and the bottom of the suction nozzle main body 1
It is directly equal with the length dimension of the push rod 3 apart from size, so arrive upper limit, that is, limited block 7 when being pushed up on the push rod 3
When, the part that the push rod 3 stretches out in the suction nozzle main body 1 is just retracted into vacuum step inner cavity 4, and end face is flat
Together；In addition, the bottom of the push rod 3 is provided with cushion, and when carrying out drawing product or vacuum breaker release product, the push rod
3 bottom is in contact with product, so the flexible materials such as setting cushion can take to avoid impaired can increase simultaneously of product again
Put the stability of product.
In the present embodiment, it is provided between the convex block 5 and the step and 3 matched first straight line of the push rod
Telescoping mechanism, the effect of the first straight line telescoping mechanism be can make the push rod 3 occur up and down stretching motion, described first
Linear scaling mechanism includes the first spring 6, and first spring 6 is set on the push rod 3, just using first spring 6
The stretching motion of the push rod 3 can be directly driven, structure is simplified.
In the nozzle structure of the prior art, suction nozzle inner cavity is only with the channel for vacuum, vacuum breaker gas channel and without it
His structure or action, traditional vacuum breaker thrust are formed positive pressure F=PS by air-flow in the lumen, and stream pressure can exist it is certain
Fluctuation, therefore by air-flow vacuum breaker, there are destabilizing factors merely.To solve the problems, such as this, increase " tongue " knot in the present embodiment
The push rod 3 of structure forms mechanical thrust, and the action of auxiliary vacuum breaker smoothly efficiently carries out.The push rod 3 is installed on the vacuum
In step inner cavity 4, under natural conditions, the push rod 3 is stretched out in the suction nozzle naturally by the spring-force driven dual of first spring 6
Outside the end face of main body 1, the step is as lower limit with first spring 6 for 3 active strokes of the push rod, separately for by institute
It states limited block 7 and is used as upper limit so that the push rod 3 only makees small distance movement.
When drawing product, vacuumized in vacuum step inner cavity 4, pull of vacuum picks up product, and pull of vacuum is big
In product gravity and the push rod 3 due to the sum of thrust caused by gravity, the push rod 3 will be compressed into the vacuum step
In inner cavity 4, the push rod 3 is remained to be contacted with product surface.3 end face of the push rod is avoided pair using protectiveness flexible material
Product surface damages.When discharging product, vacuum breaker so that negative pressure of vacuum increases in vacuum step inner cavity 4, so
Pull of vacuum reduces, and the push rod 3 of " tongue " shape overcomes pull of vacuum gradually by thrust in product surface at this time, makes production
Product are detached from the end face of the suction nozzle main body 1 as early as possible, and when product is detached from the end face, the vacuum of vacuum step inner cavity 4 is invalid,
Hereafter product is only fallen to by self gravitation effect and places position.
During vacuum breaker, the thrust that first spring 6 acts on is excessive, and product can be overthrown, thrust it is too small then with
Not enough equivalent effect is generated with vacuum breaker air-flow.Therefore the big feature that the present embodiment can effectively be implemented is, the reason of thrust
It by analysis and rationally designs, and by, with other active force relationships, shifting out the spring force of calculating first spring 6 onto in structure
Relational expression.Frictional force f=μ (F between product and the end face of the suction nozzle main body 1vacuum - Fs) it is to maintain product
The key factor that suction nozzle is stablized during plane accelerates, the frictional force rotate the inertia force for overcoming acceleration and deceleration and module
Centrifugal force, prevent product suction nozzle end face occur relative displacement.Compared to traditional vacuum suction nozzle, increase the push rod 3 then not
Preferably reduce the frictional force for acting on product, therefore spring force should be significantly less than pull of vacuum Fs << Fvacuum.And work as vacuum breaker
When, spring-force driven dual in product surface and resist negative pressure of vacuum formation suction.During vacuum breaker, product and the suction
Being certainly existed in the end face of mouth main body and other pipelines can be with the microgap of gas leakage, when there is spring thrust effect, this gap
It can be gradually expanded, pull of vacuum will be strongly reduced to zero.In addition, suction nozzle can also be overcome by acting on the spring thrust of product surface
Electrostatic attraction effect, greatly improve vacuum breaker stability and efficiency.In conclusion the institute in the first straight line telescoping mechanism
The requirement of following relational expression should be met by stating the spring thrust of the first spring 6, and can guarantee the operation high efficiency of the push rod 3,
Relational expression is：n* GDUT < Fs < 1/10 * min(Fvacuum),n<10 }, whereinnIt indicates by the quantity of suction product, GDUT
It indicates by suction product gravity, FsIndicate the elastic force of the first spring, FvacuumIndicate pull of vacuum in vacuum step inner cavity, min
(Fvacuum) indicate minimum suction value.The elastic force of first spring 6 described in the present embodiment and the gravity thrust of the push rod 3 can roots
It is customized according to the quality of product, it is ensured that stabilization picks and places product, overcomes the influence of external force, while not damaging product surface quality.
Embodiment two：The vacuum breaking device is piston-leakage port combination unit, as shown in Fig. 2, in the present embodiment,
1 overall appearance of the suction nozzle main body is cylindrical, and the bottom of the suction nozzle main body 1 is provided with one layer of interlayer, is arranged on the interlayer
There are multiple suction holes 12, the effect of the interlayer is to separate the parts inside suction nozzle main body 1 with outside, and the air-breathing
The effect in hole 12 is the connection installation inner cavity 2 and ventilates that the suction hole 12 is that the present embodiment is produced for drawing
The suction inlet of product；The installation inner cavity 2 is the cavity that the present embodiment vacuumizes, and the installation inner cavity 2 is cylindrical chamber；The work
Plug-leakage port combination unit includes the piston 8 and be arranged in 1 side of the suction nozzle main body that adaptation is arranged in the installation inner cavity 2
The leakage port 9 in face, the piston 8 can slide up and down, and the middle part of the piston 8 is provided with venthole 10, the ventilation
Hole 10 is for being connected piston or more two parts and ventilating；There are two the leakage ports 9 and is symmetrical arranged, the leakage port
9 to the air pressure in the installation inner cavity 2 for quickly carrying out pressure release processing, and the piston 8 can block institute by sliding up and down
It states leakage port 9 or releases and block state；It is provided with second between the bottom of the piston 8 and the bottom of the installation inner cavity 2
Linear scaling mechanism, the effect of the second straight line telescoping mechanism are that the piston 8 can be made to slide up and down；Described second
Linear scaling mechanism includes second spring 11, and the axis of the second spring 11 and the axis of the suction nozzle main body 1 coincide, profit
The sliding of the piston 8 can be directly driven with the second spring 11, simplify structure.
It is unstable that the fluctuation of traditional vacuum breaker air-flow can cause suction nozzle to pick and place, and the present embodiment is described discouraged by increasing by two
Mouth 9 eliminates the de-stabilising effect of the air-flow.The leakage port 9 is in vacsorb, in the second spring 11 under the action of institute
It states the movement of piston 8 and blocks the leakage port 9, and 2 inner cavity of installation inner cavity still maintains air tight, forms negative pressure of vacuum.?
When vacuum breaker, when there is weak gas flow, the suction that installation 2 inner cavity of inner cavity is formed reduces, and the piston 8 moves downward and reveals
Go out the leakage port 9, at this time 2 inner cavity of installation inner cavity and free surrounding space unicom, inner cavity is rapidly increased to atmospheric pressure.
The design of the leakage port 9 reduces the required air-flow size of vacuum breaker, even if vacuum breaker airflow fluctuation, as long as
Air-flow is more than the piston 8 and moves the required suction overcome, you can is quickly switched into deflated mode.In addition, vacuum breaker air-flow
Effective acting time has been less than the original time used, improves the efficiency of release product.And pressure drop ratio gas caused by natural gas leakage
Pressure drop caused by stream is gentler, therefore can effectively reduce pressure drop overshoot using the structure of the leakage port 9, improves release product
Stability.
The utility model can be used for the technical field of vacuum slot.
Claims (10)
1. a kind of efficient vacuum breaker suction nozzle, it is characterised in that：It includes suction nozzle main body（1）, the suction nozzle main body（1）It sets in an axial direction
It is equipped with installation inner cavity（2）, the installation inner cavity（2）Interior adaptation is provided with vacuum breaking device, and the vacuum breaking device is push rod top
Pushing device is piston-leakage port combination unit.
2. a kind of efficient vacuum breaker suction nozzle according to claim 1, it is characterised in that：The push rod thrustor includes living
It is dynamic to be arranged in the installation inner cavity（2）In push rod（3）, the push rod（3）Bottom stretch out in the suction nozzle main body（1）Bottom
Portion, the push rod（3）It is equipped with first straight line telescoping mechanism.
3. a kind of efficient vacuum breaker suction nozzle according to claim 2, it is characterised in that：The installation inner cavity（2）To run through
The suction nozzle main body（1）Vacuum step inner cavity（4）, the push rod（3）On be provided with and vacuum step inner cavity（4）Platform
The matched convex block of rank（5）, the first straight line telescoping mechanism adaptation setting is in the step and the convex block（5）Between.
4. a kind of efficient vacuum breaker suction nozzle according to claim 2, it is characterised in that：The first straight line telescoping mechanism packet
Include the first spring（6）, first spring（6）It is set in the push rod（3）On.
5. a kind of efficient vacuum breaker suction nozzle according to claim 2, it is characterised in that：The first straight line telescoping mechanism
Stretching elasticity meets following equation：n* GDUT < Fs < 1/10 * min(Fvacuum),n<10 }, whereinnIt indicates by suction product
Quantity, GDUT It indicates by suction product gravity, FsIndicate the elastic force of the first spring, FvacuumIndicate vacuum in vacuum step inner cavity
Suction.
6. a kind of efficient vacuum breaker suction nozzle according to claim 3, it is characterised in that：The push rod（3）Top setting
There is limited block（7）, the limited block（7）It is arranged in vacuum step inner cavity（4）In, the limited block（7）Bottom and institute
State suction nozzle main body（1）Bottom between vertical range size and the push rod（3）Length dimension it is equal.
7. a kind of efficient vacuum breaker suction nozzle according to claim 2-6 any one, it is characterised in that：The push rod（3）
Bottom be provided with cushion.
8. a kind of efficient vacuum breaker suction nozzle according to claim 1, it is characterised in that：The piston-leakage port group attaches together
It sets and is arranged in the installation inner cavity including adaptation（2）In piston（8）With setting in the suction nozzle main body（1）The leakage port of side
（9）, the piston（8）With the leakage port（9）It matches, the piston（8）Middle part be provided with venthole（10）, the work
Plug（8）Bottom and the installation inner cavity（2）Bottom between be provided with second straight line telescoping mechanism.
9. a kind of efficient vacuum breaker suction nozzle according to claim 8, it is characterised in that：The second straight line telescoping mechanism packet
Include second spring（11）, the second spring（11）Axis and the suction nozzle main body（1）Axis coincide.
10. a kind of efficient vacuum breaker suction nozzle according to claim 8, it is characterised in that：The suction nozzle main body（1）Bottom
It is provided with several suction holes（12）, the suction hole（12）With the installation inner cavity（2）It is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820395713.6U CN208034709U (en) | 2018-03-22 | 2018-03-22 | A kind of efficient vacuum breaker suction nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820395713.6U CN208034709U (en) | 2018-03-22 | 2018-03-22 | A kind of efficient vacuum breaker suction nozzle |
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| Publication Number | Publication Date |
|---|---|
| CN208034709U true CN208034709U (en) | 2018-11-02 |
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ID=63947976
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820395713.6U Active CN208034709U (en) | 2018-03-22 | 2018-03-22 | A kind of efficient vacuum breaker suction nozzle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108247664A (en) * | 2018-03-22 | 2018-07-06 | 珠海市运泰利自动化设备有限公司 | A kind of efficient vacuum breaker suction nozzle |
| CN112788900A (en) * | 2021-02-03 | 2021-05-11 | 东莞正阳电子有限公司 | Novel glue shield equipment |
-
2018
- 2018-03-22 CN CN201820395713.6U patent/CN208034709U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108247664A (en) * | 2018-03-22 | 2018-07-06 | 珠海市运泰利自动化设备有限公司 | A kind of efficient vacuum breaker suction nozzle |
| CN112788900A (en) * | 2021-02-03 | 2021-05-11 | 东莞正阳电子有限公司 | Novel glue shield equipment |
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