CN202560528U - Control mechanism of vacuum pump in automatic optical detector, and automatic optical detector - Google Patents

Control mechanism of vacuum pump in automatic optical detector, and automatic optical detector Download PDF

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Publication number
CN202560528U
CN202560528U CN2012201814338U CN201220181433U CN202560528U CN 202560528 U CN202560528 U CN 202560528U CN 2012201814338 U CN2012201814338 U CN 2012201814338U CN 201220181433 U CN201220181433 U CN 201220181433U CN 202560528 U CN202560528 U CN 202560528U
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China
Prior art keywords
vacuum pump
control mechanism
power
delay
optical detector
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Expired - Lifetime
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CN2012201814338U
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Chinese (zh)
Inventor
马家秋
董彦明
孙万兴
喻大群
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Zhuhai Founder Technology High Density Electronic Co Ltd
Peking University Founder Group Co Ltd
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Zhuhai Founder Technology High Density Electronic Co Ltd
Peking University Founder Group Co Ltd
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Priority to CN2012201814338U priority Critical patent/CN202560528U/en
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Abstract

The utility model provides a control mechanism of a vacuum pump in an automatic optical detector, comprising a switching unit, wherein the switching unit is used for making the vacuum pump switch an operation state between a work mode and a standby mode of the automatic optical detector; the control mechanism further comprises a power-off time delay unit, wherein delay time is preset in the power-off time delay unit; the power-off time delay unit is used for noticing the switching unit switch the vacuum pump to a shut-down state under a condition that time when the vacuum pump is under the standby mode reaches the delay time. The control mechanism has the advantages of low energy consumption, long service life, security for use and high effectiveness.

Description

The control mechanism of automatic optical detector intermediate pump and automatic optical detector
Technical field
The utility model belongs to the printed wiring board manufacture technology field, the automatic optical detector that relates to a kind of control mechanism of automatic optical detector intermediate pump and have this control mechanism.
Background technique
Automatic optical detector (AOI) is a kind of instrument that utilizes optical instrument to obtain the measured article figure; This instrument generally obtains the illumination image and the digitizing of monitoring network through sensor (vidicon camera); Someways compare then, analyze, check and judge, be equivalent to artificial visual is detected automation, intellectuality.AOI has functions such as pcb board detection, soldering paste printing detection, element testing, postwelding component detection, and when carrying out the detection of different links, the emphasis of its detection is also different.During early stage pcb board was produced, detection mainly cooperated electro-detection to accomplish by the artificial visually examine, along with development of electronic technology; The wiring density of pcb board improves constantly, and artificial visually examine's difficulty increases, and False Rate raises; And the Health cost to the tester is bigger, and electro-detection programming is more loaded down with trivial details, and cost is higher; And can't detect the defective of some type, therefore, AOI is applied in the manufacturing of pcb board more and more.
When automatic optical detector to detected object (like pcb board) when detecting, vacuumize detected object picked up and be fixed on through the vacuum pump in the automatic optical detector and inhale on the vacuum table.No matter automatic optical detector is in mode of operation or standby mode at present, the vacuum pump in the automatic optical detector all is in operating condition always: when automatic optical detector was in mode of operation, vacuum pump was in running order; When automatic optical detector was in standby mode, vacuum pump is in the idling carrying changeed state.Under normal production status; The average standby time of automatic optical detector every day is no less than 4 hours; That is to say have every day the time vacuum pump that surpasses 4 hours to be in idling always and carry under the state, so just caused the waste of the energy; And the running time of vacuum pump longly can shorten its working life, thereby improved the operating cost of automatic optical detector greatly.
The model utility content
The utility model technical problem to be solved is the above-mentioned deficiency that exists to automatic optical detector start final vacuum pump operation in the existing technology; The automatic optical detector that a kind of control mechanism of automatic optical detector intermediate pump is provided and has this control mechanism; This control mechanism can reduce the energy consumption of automatic optical detector; Thereby can optimizing equipment, prolong the working life of vacuum pump.
The technological scheme that solution the utility model technical problem is adopted is that the control mechanism of this automatic optical detector intermediate pump comprises switching unit; Said switching unit is used to make vacuum pump between the mode of operation of automatic optical detector and standby mode, to carry out the switching of operating condition; Also include the delay cut-off unit in this control mechanism; Said delay cut-off is preset with delay time in the unit; Said delay cut-off unit is used for being under the situation that the following time of standby mode reaches said delay time at vacuum pump, notifies said switching unit that said vacuum pump is switched to outage state.
Preferably; Said delay cut-off unit comprises the timing puocessing module; Said timing puocessing module is used for when said switching unit switches to standby mode with said vacuum pump, picking up counting, and is used for when the timing duration reaches said delay time, breaking off the end of incoming cables of vacuum pump and being connected of general power.
Further preferably; Said delay cut-off also includes control switch in the unit; Said timing puocessing module adopts power-off delay relay, and said switching unit comprises solenoid valve and pneumatic valve, and said pneumatic valve is used for controlling the turnover of vacuum pump gas; Said solenoid valve is used to control the switching of pneumatic valve; Said solenoid valve is connected with the coils from parallel connection of coils of said power-off delay relay, and said control switch is used to control the break-make of this parallel branch, and the normally opened contact of said power-off delay relay is serially connected between the end of incoming cables and general power of vacuum pump.
More preferably; Also include protected location in the said control mechanism; Said protected location comprises contactor and transformer, and the coil of said contactor is connected in series with the normally opened contact of power-off delay relay, and the normally opened contact of said contactor is serially connected between the end of incoming cables and general power of vacuum pump; The high voltage terminal of said transformer is connected with general power, and its low voltage terminal is connected with the input end of power-off delay relay.Owing to can pass through bigger electric current in the contactor; Through between general power and power-off delay relay, inserting contactor; Thereby make power-off delay relay reach the control purpose of electric current greatly, can shield to vacuum pump simultaneously through the very little electric current of control.Because power-off delay relay can not be connected on high-tension two ends, thus between general power and power-off delay relay, transformer is set, so that power-off delay relay is protected.
Preferred said control switch adopts programmable controller, relay switch or optoelectronic switch.
More preferably, also include sensing cell in the said control mechanism, said sensing cell is used for whether being placed with detected object on the suction vacuum table of sensing automatic optical detector, and sensing result is exported; Said control switch also is used for coming according to said sensing result the break-make of the formed parallel branch of coil of control electromagnetic valve and power-off delay relay.
Wherein, said delay time carries out the time lag of twice continuous detecting greater than automatic optical detector.Outage delay time set basis automatic optical detector in the power-off delay relay is accomplished the time of one-time detection work and is set, and the delay time of setting should be slightly larger than usually to be accomplished the one-time detection needed time of work.When the standby time of automatic optical detector surpassed the delay time of setting, the vacuum pump outage was in shutdown mode.The scope of preferred said delay time is 30s-12min.
A kind of automatic optical detector includes the control mechanism of vacuum pump and vacuum pump, and the control mechanism of said vacuum pump adopts above-mentioned control mechanism.
This control mechanism can be controlled the operation of vacuum pump rationally and effectively; In one period short period after automatic optical detector is in standby mode vacuum pump is died does not cut off the power supply; And in one period long period, can make the vacuum pump outage of dying; The energy consumption that has reduced equipment has also strengthened automation degree of equipment simultaneously to reach purpose of energy saving.Advantages such as that this control mechanism also has is simple in structure, operation facility.
Description of drawings
Fig. 1 is the circuit diagram of the control mechanism of the utility model embodiment 1 intermediate pump;
Fig. 2 is the circuit diagram of the control mechanism of the utility model embodiment 2 intermediate pumps.
Among the figure: the coil of 1-power-off delay relay; The coil of 2-contactor; The 3-solenoid valve; The 4-vacuum pump; The normally opened contact of 5-power-off delay relay; The 61-programmable controller; 62-relay switch (or optoelectronic switch); The normally opened contact of 7-contactor; Startup/the stop switch of 8-general power; The low voltage winding of 9-transformer; The high-tension coil of 10-transformer.
Embodiment
For making those skilled in the art understand the technological scheme of the utility model better, the utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment.
A kind of control mechanism of automatic optical detector intermediate pump; It comprises switching unit; Said switching unit is used to make vacuum pump between the mode of operation of automatic optical detector and standby mode, to carry out the switching of operating condition; Also include the delay cut-off unit in this control mechanism; Said delay cut-off is preset with delay time in the unit, and said delay cut-off unit is used for being under the situation that the following time of standby mode reaches said delay time at vacuum pump, notifies said switching unit that said vacuum pump is switched to outage state.
Embodiment 1:
In the present embodiment, the control mechanism of this automatic optical detector intermediate pump comprises switching unit, delay cut-off unit, protected location and sensing cell.
Wherein, Said switching unit is used to make vacuum pump between the mode of operation of automatic optical detector and standby mode, to carry out the switching of operating condition; Delay cut-off is preset with delay time in the unit; The delay cut-off unit is used for being under the situation that the following time of standby mode reaches said delay time at vacuum pump, notifies said switching unit that said vacuum pump is switched to outage state.
Said delay cut-off unit comprises control switch and timing puocessing module; Said delay time defaults in the said timing puocessing module; Said timing puocessing module is used for when said switching unit switches to standby mode with said vacuum pump, picking up counting, and when the timing duration reaches said delay time, breaks off the end of incoming cables of vacuum pump and being connected of general power.
As shown in Figure 2, in the present embodiment, said switching unit comprises solenoid valve 3 and pneumatic valve (not shown); Solenoid valve 3 is used to control the switching of pneumatic valve; Said pneumatic valve is used for controlling the turnover of vacuum pump gas, the no electric circuit of pneumatic valve own, its with vacuum pump 4 between do not belong to and be electrically connected; Pneumatic valve is that vacuum pump 4 provides compressed-air actuated path, promptly realizes the turnover of gas in the vacuum pump 4 through pneumatic valve.
In the present embodiment, said timing puocessing module adopts power-off delay relay, and said protected location comprises contactor and transformer.Solenoid valve 3 is connected in parallel with the coil 2 of power-off delay relay; Said control switch is used to control the break-make of this parallel branch; The coil 2 of said contactor is connected in series with the normally opened contact 5 of power-off delay relay, and the normally opened contact 7 of said contactor is serially connected between the end of incoming cables and general power of vacuum pump 4.
Owing to can pass through bigger electric current in the contactor; Through between general power and power-off delay relay, inserting contactor; Thereby make power-off delay relay reach the control purpose of electric current greatly, can shield to vacuum pump simultaneously through the very little electric current of control; And; Because power-off delay relay can not be connected on high-tension two ends usually; So need between power-off delay relay and general power, transformer be set; The low voltage terminal of this transformer can come the running of the vacuum pump 4 of control flows super-high-current through the little electric current that flows through power-off delay relay like this as the input end of power-off delay relay.Because control switch can control electromagnetic valve 3 is opened with closing with the same of power-off delay relay, with power-off delay relay the different controlling object in the vacuum pump is carried out synchronization control through solenoid valve 3, thereby can control the gas circuit and the circuit of vacuum pump 4 respectively.
Wherein, be provided with delay time in the power-off delay relay, said delay time should be higher than the time lag of twice continuous detecting of automatic optical detector.In the present embodiment, this delay time is 1min.
In the present embodiment, said control switch adopts programmable controller 61, and said protected location adopts a transformer.
Particularly; Because the coil 1 of solenoid valve 3 and power-off delay relay also connects; The break-make of this parallel branch is controlled by programmable controller 61, and promptly the coil 1 of programmable controller 61 control electromagnetic valve 3 and power-off delay relay carries out closing with opening together, and this parallel branch is attempted by the two ends of the low voltage winding 9 of said transformer; The high-tension coil 10 of transformer is connected with general power, also is provided with the startup/stop switch of general power between the high-tension coil 10 of transformer and the general power; The normally opened contact 5 of power-off delay relay is connected in series with the coil 2 of contactor, and this series arm is connected to the two ends of the low voltage winding 9 of transformer; The normally opened contact 7 of contactor is connected in series with the end of incoming cables of vacuum pump 4.Because power-off delay relay is the direct electronic work of the gain and loss of control contactor just, contactor can directly be controlled the electronic work of gain and loss of vacuum pump 4, has finally realized controlling through power-off delay relay the running of vacuum pump 4.
Said sensing cell is used for whether being placed with detected object (pcb board) on the suction vacuum table of sensing automatic optical detector; And with sensing result output, said programmable controller 61 also is used for coming according to said sensing result the break-make of the coil 1 formed parallel branch of control electromagnetic valve 3 and power-off delay relay.In the present embodiment, sensing cell can adopt the table top inductor.Like this, after the detection of treating automatic optical detector is accomplished, do not need being switched on or switched off of parallel branch that the coil 1 of manual control electromagnetic valve 3 and power-off delay relay forms, thereby can realize purpose that equipment is controlled automatically.
Inhale when not placing detected object on the vacuum table when sensing cell senses, output corresponding sensing signal is to programmable controller 61, the parallel branch that the coil 1 that programmable controller 61 is used to control power-off delay relay and solenoid valve 3 are formed; The said parallel branch of programmable controller 61 controls is broken off, solenoid valve 3 outages, and the control pneumatic valve cuts out; The gas circuit of vacuum pump 4 is closed (this moment, automatic optical detector was in standby mode), and coil 1 outage of power-off delay relay is when power-off time does not reach the delay time of setting in the power-off delay relay; When being 1min; Then the normally opened contact 5 of power-off delay relay continues to remain closed, and the coil 2 of contactor continues to keep energising, normally opened contact 7 closures of contactor; Vacuum pump 4 still keeps "on" position, and this moment, vacuum pump was in idling carrying commentaries on classics state; When power-off time reaches the delay time of setting in the power-off delay relay; The normally opened contact 5 of power-off delay relay breaks off, coil 2 outages of contactor, and the normally opened contact 7 of contactor breaks off; The end of incoming cables outage of vacuum pump 4, this moment, vacuum pump was in outage state.
When automatic optical detector carries out work, can general power be opened through the startup/stop switch 8 that is serially connected in the general power on the general power, said general power is whole automatic optical detector power supply.
When sensing, inhales when being placed with detected object on the vacuum table table top sensor; The corresponding sensing signal is inputed to programmable controller 61, and programmable controller 61 control electromagnetic valve 3 is in view of the above connected with the coil 1 formed parallel branch of power-off delay relay, and solenoid valve 3 control pneumatic valves are opened; The gas circuit of vacuum pump 4 is opened; Coil 1 energising of power-off delay relay, normally opened contact 5 closures of power-off delay relay, coil 2 energisings of contactor; Normally opened contact 7 closures of contactor, vacuum pump 4 energisings are started working; Automatic optical detector begins detected object is detected through a series of action: inhale vacuum, scanning, data comparison, put down detected object.
After having detected a detected object; When this detected object left the suction vacuum table, the table top sensor sensed to inhale on the vacuum table and is not placed with detected object, promptly sends corresponding sensing signal to programmable controller 61; Programmable controller 61 control electromagnetic valve 3 are cut off the power supply with the parallel branch of the coil 1 of power-off delay relay; Solenoid valve 3 outages, solenoid valve 3 control pneumatic valves cut out, and the gas circuit of vacuum pump 4 is closed (being that automatic optical detector is in standby mode); Meanwhile, coil 1 outage of power-off delay relay is not when power-off time reaches the 1min that sets in the power-off delay relay; Then the normally opened contact 5 of power-off delay relay continues to remain closed, and the coil 2 of contactor continues to keep energising, normally opened contact 7 closures of contactor; Vacuum pump 4 still keeps "on" position; But owing to pneumatic valve cuts out, so though vacuum pump energising this moment is not worked, promptly this moment, vacuum pump was in idling carrying commentaries on classics state; If when the power-off delay relay timing does not reach 1min, the table top sensor senses to be inhaled when being placed with detected object once more on the vacuum table, and the corresponding sensing signal is inputed to programmable controller 61; Programmable controller 61 control electromagnetic valve 3 is in view of the above connected with the coil 1 formed parallel branch of power-off delay relay; Solenoid valve 3 control pneumatic valves are opened, and the gas circuit of vacuum pump 4 is opened, coil 1 energising of power-off delay relay; Normally opened contact 5 closures of power-off delay relay; Coil 2 energisings of contactor, normally opened contact 7 closures of contactor, vacuum pump 4 energisings are started working; Automatic optical detector begins detected object is detected through a series of action, so circulation.
When the automatic optical detector running hours; Because the delay time of setting in the power-off delay relay is greater than the time lag of twice continuous detecting of this automatic optical detector, after so each detection finished, pneumatic valve cut out at once; But vacuum pump 4 still is in "on" position; The gas circuit control that can remain valid like this can well be protected vacuum pump 4 again simultaneously, prevents that vacuum pump 4 from opening and closing the life-span of reducing vacuum pump 4 because of frequent.
Be not placed with detected object when the table top sensor senses to inhale on the vacuum table, input corresponding sensing signal is to programmable controller 61, and programmable controller 61 is used to control the coil 1 of power-off delay relay and the parallel branch that solenoid valve 3 is formed; The said parallel branch of programmable controller 61 controls is broken off, solenoid valve 3 outages, and the control pneumatic valve cuts out; The gas circuit of vacuum pump 4 is closed (this moment, automatic optical detector was in standby mode), and coil 1 outage of power-off delay relay is when power-off time does not reach the delay time of setting in the power-off delay relay; When being 1min; Then the normally opened contact 5 of power-off delay relay continues to remain closed, and the coil 2 of contactor continues to keep energising, normally opened contact 7 closures of contactor; Vacuum pump 4 still keeps "on" position, and this moment, vacuum pump was in idling carrying commentaries on classics state; When power-off time reached the delay time of setting in the power-off delay relay, the normally opened contact 5 of power-off delay relay broke off, coil 2 outages of contactor; The normally opened contact 7 of contactor breaks off; The end of incoming cables outage of vacuum pump 4 quits work, and vacuum pump 4 is in outage state.When unattended this automatic optical detector, vacuum pump 4 will be in the outage state of dying, thereby can play the effect of energy saving.
A kind of automatic optical detector comprises the control mechanism of vacuum pump and vacuum pump, and said control mechanism has adopted above-mentioned control mechanism.
Embodiment 2:
As shown in Figure 2, present embodiment and embodiment's 1 difference is: the first, do not have sensing cell in the present embodiment; The second, control switch adopts relay switch 62.
Thereby, in the present embodiment, owing to do not have sensing cell, thereby need come the break-make of the formed parallel branch of coil of control electromagnetic valve and power-off delay relay through the switching of the said relay switch 62 of manual control.
Other structure, effect and the using process of control structure be all identical with embodiment 1 in the present embodiment, repeats no more here.
It is understandable that above mode of execution only is the illustrative embodiments that adopts for the principle that the utility model is described, yet the utility model is not limited thereto.For the one of ordinary skilled in the art, under the situation of spirit that does not break away from the utility model and essence, can make various modification and improvement, these modification and improvement also are regarded as the protection domain of the utility model.

Claims (9)

1. the control mechanism of an automatic optical detector intermediate pump; Comprise switching unit; Said switching unit is used to make vacuum pump between the mode of operation of automatic optical detector and standby mode, to carry out the switching of operating condition; It is characterized in that also include the delay cut-off unit in this control mechanism, said delay cut-off is preset with delay time in the unit; Said delay cut-off unit is used for being under the situation that the following time of standby mode reaches said delay time at vacuum pump, notifies said switching unit that said vacuum pump is switched to outage state.
2. control mechanism according to claim 1; It is characterized in that; Said delay cut-off unit comprises the timing puocessing module; Said timing puocessing module is used for when said switching unit switches to standby mode with said vacuum pump, picking up counting, and is used for when the timing duration reaches said delay time, breaking off the end of incoming cables of vacuum pump and being connected of general power.
3. control mechanism according to claim 2; It is characterized in that said delay cut-off also includes control switch in the unit, said timing puocessing module adopts power-off delay relay; Said switching unit comprises solenoid valve and pneumatic valve; Said pneumatic valve is used for controlling the turnover of vacuum pump gas, and said solenoid valve is used to control the switching of pneumatic valve, and said solenoid valve is connected with the coils from parallel connection of coils of said power-off delay relay; Said control switch is used to control the break-make of this parallel branch, and the normally opened contact of said power-off delay relay is serially connected between the end of incoming cables and general power of vacuum pump.
4. control mechanism according to claim 3; It is characterized in that; Also include protected location in the said control mechanism; Said protected location comprises contactor and transformer, and the coil of said contactor is connected in series with the normally opened contact of power-off delay relay, and the normally opened contact of said contactor is serially connected between the end of incoming cables and general power of vacuum pump; The high voltage terminal of said transformer is connected with general power, and its low voltage terminal is connected with the input end of power-off delay relay.
5. control mechanism according to claim 3 is characterized in that, said control switch adopts programmable controller, relay switch or optoelectronic switch.
6. control mechanism according to claim 3 is characterized in that, also includes sensing cell in the said control mechanism,
Said sensing cell is used for whether being placed with detected object on the suction vacuum table of sensing automatic optical detector, and sensing result is exported;
Said control switch also is used for coming according to said sensing result the break-make of the formed parallel branch of coil of control electromagnetic valve and power-off delay relay.
7. according to the described control mechanism of one of claim 1-6, it is characterized in that said delay time carries out the time lag of twice continuous detecting greater than automatic optical detector.
8. control mechanism according to claim 7 is characterized in that, the scope of said delay time is 30s-12min.
9. automatic optical detector includes the control mechanism of vacuum pump and vacuum pump, it is characterized in that the control mechanism of said vacuum pump adopts one of claim 1-8 described control mechanism.
CN2012201814338U 2012-04-25 2012-04-25 Control mechanism of vacuum pump in automatic optical detector, and automatic optical detector Expired - Lifetime CN202560528U (en)

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CN2012201814338U CN202560528U (en) 2012-04-25 2012-04-25 Control mechanism of vacuum pump in automatic optical detector, and automatic optical detector

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Application Number Priority Date Filing Date Title
CN2012201814338U CN202560528U (en) 2012-04-25 2012-04-25 Control mechanism of vacuum pump in automatic optical detector, and automatic optical detector

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110130133A (en) * 2019-05-22 2019-08-16 安徽商贸职业技术学院 A kind of waste paper interpreter
CN112377396A (en) * 2020-10-20 2021-02-19 石横特钢集团有限公司 Emergent electric device of spectrum appearance vacuum system gas leakage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110130133A (en) * 2019-05-22 2019-08-16 安徽商贸职业技术学院 A kind of waste paper interpreter
CN112377396A (en) * 2020-10-20 2021-02-19 石横特钢集团有限公司 Emergent electric device of spectrum appearance vacuum system gas leakage

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Granted publication date: 20121128