CN202443084U - Automatic test device of alternative-current (AC) contactor - Google Patents
Automatic test device of alternative-current (AC) contactor Download PDFInfo
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- CN202443084U CN202443084U CN2012200719961U CN201220071996U CN202443084U CN 202443084 U CN202443084 U CN 202443084U CN 2012200719961 U CN2012200719961 U CN 2012200719961U CN 201220071996 U CN201220071996 U CN 201220071996U CN 202443084 U CN202443084 U CN 202443084U
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Abstract
The utility model relates to an automatic test device of an alternative-current (AC) contactor, which mainly solves the problems that the existing AC contactor is manually tested in detection, the labor intensity is large, the working efficiency is low and the error is large. The automatic test device of the AC contactor is characterized in that a feeding station, at least one detection station and a discharging station are sequentially arranged on a stander (1) along the feeding direction of a work-piece, wherein the detection station is provided with an automatic clamp (3), a detection probe group (5) is fixedly arranged on a linear reciprocating device (6) and is driven by the linear reciprocating device (6) to be communicated and disconnected with the AC contactor (4); and a mechanical hand (7) is driven by an elevation reciprocating linear device and a horizontal reciprocating linear device, and the mechanical hand (7) can clamp the work-piece to move from one station to a next adjacent station. The mechanical hand is adopted to grab the work-piece, so that the sequential automatic detection of multiple parameters on multiple stations is realized, and the automatic test device has the characteristics of high working efficiency and small error.
Description
Technical field
The utility model relates to a kind of A.C. contactor parameter detection device, is specifically related to a kind of A.C. contactor automatic testing equipment.
Background technology
Contactor is a kind of application robotization control apparatus very widely, is mainly used in the AC and DC circuit of frequent connection or disjunction, and it is big to have a control capacity, but advantages such as remote-controlled operation.Cooperate relay can realize fixed cycle operator, interlocked control, various quantitative control and functions such as decompression and under-voltage protection, be widely used in automatic control circuit.Must the strict project that detects when A.C. contactor dispatches from the factory have whether break-make qualified, coil voltage-withstand test, power consumption parameter, the adhesive parameter that leans forward whether qualified (leaning forward 5 °), hypsokinesis adhesive parameter whether qualified (5 ° of hypsokinesis), clearance between open contacts and excess of stroke parameter qualified.Above-mentioned parameter is very big to the A.C. contactor quality influence, and custom adopts the manual testing on producing in the past, has that labour intensity is big, inefficiency and a big defective of error.
The utility model content
When detecting, adopt the manual testing in order to solve existing A.C. contactor; Have that labour intensity is big, inefficiency and the big problem of error; The utility model provides a kind of A.C. contactor automatic testing equipment; This A.C. contactor automatic testing equipment adopts the automatic grabbing workpiece of mechanical arm, realizes that each parameter detects at multistation successively automatically, has the little characteristics of high efficiency and error.
The technical scheme of the utility model is: a kind of A.C. contactor automatic testing equipment comprises frame and belt conveyor; The approach axis of frame upper edge workpiece is provided with the material loading station successively, at least one detects station and blanking station; Distance between the adjacent stations equates; Detect station and be provided with automatic fixture; One side of automatic fixture is provided with and the corresponding detector probe group of each terminals of A.C. contactor, and one group of detector probe group is electrically connected with the relevant parameters pick-up unit, and the detector probe group is fixed on the linear reciprocation device and drives it and A.C. contactor switches on and off by the linear reciprocation device; The top of automatic fixture is provided with two mechanical arms at least; Distance between the adjacent mechanical arm equates with distance between the adjacent stations; Mechanical arm is driven by the reciprocal linear device of reciprocal linear device and level that goes up and down, and mechanical arm can move to adjacent next station from a station by the clamping workpiece.
Described parameter detection device is divided into and detects six kinds of on off test device, coil pressure resistant testing device, power consumption parameter test device, the adhesive parameter test device that leans forward, hypsokinesis adhesive parameter test device, clearance between open contacts and excess of stroke parameter test devices.
Described detection station is one, two, three, four, five or six and respectively corresponding a kind of, six kinds or the combination any two, three, four, five kind that is equipped with in the parameter detection device.
Described detection station is six, and promptly the first detection station, second detects station, the 3rd and detects station, the 4th detection station, the 5th detection station and the 6th detection station, and automatic fixture is made up of the moving clamping plate of holder and air cylinder driven;
Whether the first detection station magnetic test coil is qualified with each contact break-make;
Whether the second detection station magnetic test coil is withstand voltage qualified, and the opposite side with the detector probe group on the automatic fixture on this detection station is provided with copper coin, and copper coin also can be fitted with the mounting groove of A.C. contactor by air cylinder driven;
The 3rd detects whether lattice of station magnetic test coil power consumption parameter;
Whether the 4th to detect the A.C. contactor adhesive parameter that leans forward qualified if detecting station, the automatic fixture on this detection station is provided with the cylinder that automatic fixture is leaned forward;
Whether the 5th detection station detects A.C. contactor hypsokinesis adhesive parameter qualified, and the automatic fixture on this detection station is provided with the cylinder that makes the automatic fixture hypsokinesis;
Whether qualified the 6th detects the station detection contact opens distance and the excess of stroke parameter when; The detector probe group is fixed on the linear reciprocation device; Linear reciprocation Unit Installation plate is driven by servomotor and ball-screw, wherein also is provided with the middle probe that stretches into the unsteady indication piece of A.C. contactor.
Described mechanical arm is 7 and equidistant being fixed on the web joint, and the top of web joint is connected with the piston rod of lift cylinder, and lift cylinder is fixed on the slide plate; Slide plate is installed on the slide block of line slideway; And can realize left and right sides linear slide through the slip between slide block and the line slideway, slide plate is provided with guide holder, is fixed with guidepost on the web joint; Described guidepost passes the guide holder on the slide plate, is fixed with on the frame to drive the feeding cylinder that the slide plate level reciprocatingly slides.
Described detector probe group is fixed on the side plate, and side plate links to each other with the piston rod of cylinder.
Described mechanical arm mainly is made up of two clamping plate that parallel, and two clamping plate are closed up synchronously and separated by air cylinder driven; The equal synchronization action of a plurality of mechanical arms.
Described material loading station place is provided with the material loading switching mechanism; The material loading switching mechanism mainly is made up of lift cylinder, Connection Block and rollover stand; Rollover stand is made up of base plate and dihedral side plate, and the dihedral side plate is corresponding with belt conveyor, and a side and the Connection Block of rollover stand are hinged; Be fixed with position limit arm on the rollover stand, frame is provided with the push rod corresponding with position limit arm; Rollover stand has two duties; The one, the base plate and the belt conveyor of rollover stand are positioned at same plane before the upset; Belt conveyor can be delivered to A.C. contactor on the rollover stand; The 2nd, 90 ° of upset back rollover stand upsets, this moment, base plate erected, dihedral side plate level and with frame on the automatic fixture that respectively detects on the station be in same straight line sustained height; Blanking station place is provided with blanking turnover mechanism, and blanking turnover mechanism is identical with material loading switching mechanism structure, and action is opposite during work.
The contact jaw of described belt conveyor and material loading switching mechanism is provided with positioning cylinder.
Described belt conveyor is provided with the blowing tube that communicates with pressure air, and blowing tube is above A.C. contactor.
The utlity model has following beneficial effect: owing to take such scheme, adopt the automatic grabbing workpiece of mechanical arm, realize that each parameter detects at multistation successively automatically, has the little characteristics of high efficiency and error.The parameter setting of product can be provided with on touch-screen or industrial computer, and this equipment not only is applicable to the A.C. contactor product, also is applicable to the similar detection operation of other products.
Description of drawings
Accompanying drawing 1 is the perspective view of the utility model.
Accompanying drawing 2 is structural representations of automatic fixture 3 among Fig. 1.
Accompanying drawing 3 is mounting structure synoptic diagram of mechanical arm 7 among Fig. 1.
Accompanying drawing 4 is structural representations of material loading switching mechanism 11 among Fig. 1.
Accompanying drawing 5 is mounting structure synoptic diagram of detector probe group 5 among Fig. 1.
1-frame among the figure, the 2-belt conveyor, the 3-automatic fixture, the 31-holder, 32-moves clamping plate, 33-copper coin, 4-A.C. contactor; 5-detector probe group, 6-linear reciprocation device, 61-side plate, 7-mechanical arm, 71-web joint, 72-lift cylinder, 73-slide plate; The 73A-slide block, 74B-line slideway, 74-guide holder, 75-guidepost, 76-feeding cylinder, 8-servomotor; Probe in the middle of the 9-ball-screw, 10-, 11-material loading switching mechanism, 111-material loading lift cylinder, 112-Connection Block, 113-rollover stand; The 1131-base plate, 1132-dihedral side plate, 114-position limit arm, 115-push rod, 12-blanking turnover mechanism, 13-positioning cylinder.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further:
Combine Fig. 2-shown in Figure 5 by Fig. 1; A kind of A.C. contactor automatic testing equipment comprises frame 1 and belt conveyor 2; The approach axis of frame 1 upper edge workpiece is provided with the material loading station successively, at least one detects station and blanking station; Distance between the adjacent stations equates, detects station and is provided with automatic fixture 3, and a side of automatic fixture 3 is provided with and the corresponding detector probe group 5 of each terminals of A.C. contactor 4; One group of detector probe group 5 is electrically connected with the relevant parameters pick-up unit, and detector probe group 5 is fixed on the linear reciprocation device 6 and drives it and A.C. contactor 4 switches on and off by linear reciprocation device 6; The top of automatic fixture 3 is provided with two mechanical arms 7 at least; Distance between the adjacent mechanical arm 7 equates with the distance between the adjacent stations; Mechanical arm 7 is driven by the reciprocal linear device of reciprocal linear device and level that goes up and down; The reciprocal linear device of reciprocal linear device and the level of going up and down adopts cylinder, i.e. lift cylinder 72 and feeding cylinder 76, and mechanical arm 7 can move to adjacent next station from a station by the clamping workpiece.The utility model adopts mechanical arm 7 automatic grabbing workpieces, realizes that each parameter detects at multistation successively automatically, has the little characteristics of high efficiency and error.The parameter setting of product can be provided with on touch-screen or industrial computer, and this equipment not only is applicable to the A.C. contactor product, also is applicable to the similar detection operation of other products.
Described parameter detection device is divided into and detects six kinds of on off test device, coil pressure resistant testing device, power consumption parameter test device, the adhesive parameter test device that leans forward, hypsokinesis adhesive parameter test device, clearance between open contacts and excess of stroke parameter test devices.Substandard product is discerned and write down to the above-mentioned parameter pick-up unit automatically by the PLC programmed control, on the belt conveyor 2 of discharging, is provided with photoelectric sensor and picks the material cylinder, automatically substandard product rejected defective material road.
Described detection station is one, two, three, four, five or six and respectively corresponding a kind of, six kinds or the combination any two, three, four, five kind that is equipped with in the parameter detection device.
Described detection station is six, and promptly the first detection station, second detects station, the 3rd and detects station, the 4th detection station, the 5th detection station and the 6th detection station, and automatic fixture 3 is made up of the moving clamping plate 32 of holder 31 and air cylinder driven;
Whether the first detection station magnetic test coil is qualified with each contact break-make; When product cut off the power supply, normally closed contact was reliably connected, and normally opened contact reliably breaks off; When product was switched on, normally closed contact reliably broke off, and normally opened contact is reliably connected.
Whether the second detection station magnetic test coil is withstand voltage qualified, and the opposite side with detector probe group 5 on the automatic fixture 3 on this detection station is provided with copper coin 33, and copper coin 33 also can be fitted with the mounting groove of A.C. contactor 4 by air cylinder driven; High-potting voltage is 2500V, and is adjustable at 0～5000V, test period 1S, and in 0～120S, set arbitrarily; Leakage Current is 0～200mA, comprises the gear of 0～200mA, can set up on their own.The position that product testing detects is: 1. when main contact is closed, between all each utmost point electrified bodys that connects together; 2. when main contact breaks off, between the connection terminal of the same side and the connection terminal of opposite side; Coil over the ground between, promptly coil is between the copper coin 33.
The 3rd detects whether lattice of station magnetic test coil power consumption parameter; When product coil energising adhesive, the current value of test coil, when greater than setting, system judges that product is defective, setting can be set arbitrarily.
Whether the 4th to detect the A.C. contactor 4 adhesive parameter that leans forward qualified if detecting station, the automatic fixture 3 on this detection station is provided with the cylinder that automatic fixture 3 is leaned forward; Product coil is applied 80%～110% of rated voltage, rated voltage respectively, and the voltage output system adopts stepper motor to rotate the output voltage that slowly increases pressure regulator, the A.C. contactor 45 ° of reliably adhesives of leaning forward, and test number (TN) can be set arbitrarily.
Whether the 5th detection station detects A.C. contactor 4 hypsokinesis adhesive parameters qualified, and the automatic fixture 3 on this detection station is provided with the cylinder that makes automatic fixture 3 hypsokinesis; Product coil is applied rated voltage make it adhesive; With 5 ° of A.C. contactor 4 hypsokinesis; Slowly step-down continuously then; Reliable release in 20%～75% (interchange) scope of rated voltage, the voltage output system adopts stepper motor to rotate the output voltage that slowly reduces pressure regulator, and test number (TN) can be set arbitrarily.
Whether qualified the 6th detects the station detection contact opens distance and the excess of stroke parameter when; Detector probe group 5 is fixed on the linear reciprocation device 6; Linear reciprocation device 6 is a cylinder; The installing plate of linear reciprocation device 6 is driven by servomotor 8 and ball-screw 9, wherein also is provided with the middle probe 10 that stretches into A.C. contactor 4 unsteady indication pieces.Linear reciprocation device 6 is pushed detector probe group 5 and middle probe 10 to A.C. contactor 4; Each contact and coil that detector probe group 5 is connected on the A.C. contactor 4; Servomotor 8 rotations are through probe 10 in the middle of ball-screw 9 drives and after the unsteady indication piece of A.C. contactor 4 contacts; Servomotor 8 stops, the initial point of the middle probe 10 of record this moment.The coil adhesive, servomotor 8 starts, and middle probe 10 extend in the A.C. contactor 4 and with after unsteady indication piece contact, servomotor 8 stops, and the position and the distance between the initial point of the middle probe 10 of record this moment are total journey.The method that the distance and the excess of stroke are opened in detection has two kinds: first kind is servomotor 8 counter-rotatings; Middle probe 10 is retracted into origin position; Coil blackout; Servomotor 8 is just changeing by middle probe 10 indication piece that promotes to float connects each main contacts of A.C. contactor 4 respectively, and probe 10 is respectively the distance of opening of each main contacts to the distance of initial point in the middle of this moment, and total journey is the excess of stroke with the difference of opening distance.Second kind is coil blackout; But middle probe 10 props up unsteady indication piece; Servomotor 8 counter-rotating is broken off each main contacts one by one, is the distance of opening of each main contacts in middle probe 10 positions that each main contacts has just broken off to the distance between the initial point, and total journey is the excess of stroke with the difference of opening distance.
Described mechanical arm 7 is 7 and equidistant being fixed on the web joint 71; The top of web joint 71 is connected with the piston rod of lift cylinder 72; Lift cylinder 72 is fixed on the slide plate 73, and slide plate 73 is installed on the slide block 73A of line slideway, and can realize left and right sides linear slide through the slip between slide block and the line slideway 73B; Slide plate 73 is provided with guide holder 74; Be fixed with guidepost 75 on the web joint 71, described guidepost 75 passes the guide holder 74 on the slide plate 73, is fixed with on the frame 1 to drive the feeding cylinder 76 that slide plate 73 levels reciprocatingly slide.The stroke of feeding cylinder 76 equals two distances between the station, and the 76 every actions of feeding cylinder are once just moved a station with workpiece.
Described detector probe group 5 is fixed on the side plate 61, and side plate 61 links to each other with the piston rod of cylinder.Detector probe group 5 and the identical telescopic structure that is of middle probe 10 structures; Inside is provided with spring; Spring force in the middle probe 10 is much smaller than the spring force of the A.C. contactor 4 interior indication pieces that float; Thereby withdraw the fully indication piece that floats of middle probe 10 is motionless, can detect the position of the indication piece that floats, and cylinder side plate 61 drives detector probe groups 5 and connects with the terminals of A.C. contactor 4.
Described mechanical arm 7 mainly is made up of two clamping plate that parallel, and two clamping plate are closed up synchronously and separated by air cylinder driven; A plurality of mechanical arm 7 equal synchronization actions.Mechanical arm 7 clamping A.C. contactors 4 enter into next station from a last station.Each parameter detects simultaneously, has reduced detection time, has improved detection efficiency.
Described material loading station place is provided with material loading switching mechanism 11; Material loading switching mechanism 11 mainly is made up of material loading lift cylinder 111, Connection Block 112 and rollover stand 113; Rollover stand 113 is made up of base plate 1131 and dihedral side plate 1132, and dihedral side plate 1132 is corresponding with belt conveyor 2, and a side and the Connection Block 112 of rollover stand 113 are hinged; Be fixed with position limit arm 114 on the rollover stand 113, frame 1 is provided with the push rod 115 corresponding with position limit arm 114; Rollover stand 113 has two duties; The one, the base plate 1131 of rollover stand 113 is positioned at same plane with belt conveyor 2 before the upset; Belt conveyor 2 can be delivered to A.C. contactor 4 on the rollover stand 113; The 2nd, 90 ° of upset back rollover stand 113 upsets, this moment, base plate 1131 erected, dihedral side plate 1132 levels and with frame 1 on the automatic fixture 3 that respectively detects on the station be in same straight line sustained height; Blanking station place is provided with blanking turnover mechanism 12, and blanking turnover mechanism 12 is identical with material loading switching mechanism 11 structures, and action is opposite during work.During work, material loading lift cylinder 111 rises, and position limit arm 114 leaves push rod 115, and rollover stand 113 stops after 90 ° of the upsets under action of gravity naturally, and when material loading lift cylinder 111 descended, position limit arm 114 was by push rod 115 jack-up, 90 ° of rollover stand 113 reverse flip.A.C. contactor 4 its terminals when normal the conveying make progress, and can lead to through material loading switching mechanism 11 to make terminals be positioned at the side for 90 ° its upset, are convenient to detect; After detecting end, through blanking turnover mechanism 12 A.C. contactor 4 is turned over back normal condition again.
Described belt conveyor 2 is provided with positioning cylinder 13 with the contact jaw of material loading switching mechanism 11.Positioning cylinder 13 can block the A.C. contactor 4 that gets into material loading switching mechanism 11 back, makes it remain on waiting status.
Described belt conveyor 2 is provided with the blowing tube that communicates with pressure air, and blowing tube is above A.C. contactor 4.Blowing tube can blow down the dust on A.C. contactor 4 terminals.
Claims (10)
1. A.C. contactor automatic testing equipment; Comprise frame (1) and belt conveyor (2); It is characterized in that: the approach axis of frame (1) upper edge workpiece is provided with the material loading station successively, at least one detects station and blanking station; Distance between the adjacent stations equates, detects station and is provided with automatic fixture (3), and a side of automatic fixture (3) is provided with the corresponding detector probe groups of each terminals (5) with A.C. contactor (4); One group of detector probe group (5) is electrically connected with the relevant parameters pick-up unit, and detector probe group (5) is fixed on that linear reciprocation device (6) is gone up and drives it and A.C. contactor (4) switches on and off by linear reciprocation device (6); The top of automatic fixture (3) is provided with two mechanical arms (7) at least; Distance between the adjacent mechanical arm (7) equates with the distance between the adjacent stations; Mechanical arm (7) is driven by the reciprocal linear device of reciprocal linear device and level that goes up and down, and mechanical arm (7) can move to adjacent next station from a station by the clamping workpiece.
2. A.C. contactor automatic testing equipment according to claim 1 is characterized in that: parameter detection device is divided into and detects six kinds of on off test device, coil pressure resistant testing device, power consumption parameter test device, the adhesive parameter test device that leans forward, hypsokinesis adhesive parameter test device, clearance between open contacts and excess of stroke parameter test devices.
3. A.C. contactor automatic testing equipment according to claim 2 is characterized in that: detect station and be one, two, three, four, five or six and corresponding respectively a kind of, six kinds or the combination any two, three, four, five kind that is equipped with in the parameter detection device.
4. A.C. contactor automatic testing equipment according to claim 3; It is characterized in that: detecting station is six; Promptly the first detection station, second detects station, the 3rd and detects station, the 4th detection station, the 5th detection station and the 6th detection station, and automatic fixture (3) is made up of the moving clamping plate (32) of holder (31) and air cylinder driven;
Whether the first detection station magnetic test coil is qualified with each contact break-make;
Whether the second detection station magnetic test coil is withstand voltage qualified, and the automatic fixture (3) on this detection station is gone up and the opposite side of detector probe group (5) is provided with copper coin (33), and copper coin (33) also can be fitted with the mounting groove of A.C. contactor (4) by air cylinder driven;
The 3rd detects whether lattice of station magnetic test coil power consumption parameter;
Whether the 4th to detect A.C. contactor (4) the adhesive parameter that leans forward qualified if detecting station, the automatic fixture (3) on this detection station is provided with the cylinder that automatic fixture (3) is leaned forward;
Whether the 5th detection station detects A.C. contactor (4) hypsokinesis adhesive parameter qualified, and the automatic fixture (3) on this detection station is provided with the cylinder that makes automatic fixture (3) hypsokinesis;
Whether qualified the 6th detects the station detection contact opens distance and the excess of stroke parameter when; Detector probe group (5) is fixed on the linear reciprocation device (6); The installing plate of linear reciprocation device (6) is driven by servomotor (8) and ball-screw (9), wherein also is provided with the middle probe (10) that stretches into the unsteady indication piece of A.C. contactor (4).
5. A.C. contactor automatic testing equipment according to claim 4; It is characterized in that: mechanical arm (7) is 7 and equidistant being fixed on the web joint (71); The top of web joint (71) is connected with the piston rod of lift cylinder (72); Lift cylinder (72) is fixed on the slide plate (73), and slide plate (73) is installed on the slide block (73A) of line slideway, and can realize left and right sides linear slide through the slip between slide block and the line slideway (73B); Slide plate (73) is provided with guide holder (74); Be fixed with guidepost (75) on the web joint (71), described guidepost (75) passes the guide holder (74) on the slide plate (73), is fixed with on the frame (1) to drive the feeding cylinder (76) that slide plate (73) level reciprocatingly slides.
6. according to claim 1,2,3,4 or 5 described A.C. contactor automatic testing equipments, it is characterized in that: detector probe group (5) is fixed on the side plate (61), and side plate (61) links to each other with the piston rod of cylinder.
7. according to claim 1,2,3,4 or 5 described A.C. contactor automatic testing equipments, it is characterized in that: mechanical arm (7) mainly is made up of two clamping plate that parallel, and two clamping plate are closed up synchronously and separated by air cylinder driven; A plurality of mechanical arms (7) are synchronization action all.
8. according to claim 1,2,3,4 or 5 described A.C. contactor automatic testing equipments; It is characterized in that: material loading station place is provided with material loading switching mechanism (11); Material loading switching mechanism (11) mainly is made up of lift cylinder (111), Connection Block (112) and rollover stand (113); Rollover stand (113) is made up of base plate (1131) and dihedral side plate (1132), and dihedral side plate (1132) is corresponding with belt conveyor (2), and a side of rollover stand (113) and Connection Block (112) are hinged; Be fixed with position limit arm (114) on the rollover stand (113), frame (1) is provided with the push rod (115) corresponding with position limit arm (114); Rollover stand (113) has two duties; The one, the base plate (1131) of rollover stand (113) is positioned at same plane with belt conveyor (2) before the upset; Belt conveyor (2) can be delivered to A.C. contactor (4) on the rollover stand (113); The 2nd, 90 ° of upset back rollover stand (113) upsets, base plate this moment (1131) erects, dihedral side plate (1132) level and with frame (1) on the automatic fixture (3) that respectively detects on the station be in same straight line sustained height;
Blanking station place is provided with blanking turnover mechanism (12), and blanking turnover mechanism (12) is identical with material loading switching mechanism (11) structure, and action is opposite during work.
9. A.C. contactor automatic testing equipment according to claim 8 is characterized in that: belt conveyor (2) is provided with positioning cylinder (13) with the contact jaw of material loading switching mechanism (11).
10. A.C. contactor automatic testing equipment according to claim 9 is characterized in that: belt conveyor (2) is provided with the blowing tube that communicates with pressure air, and blowing tube is in the top of A.C. contactor (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200719961U CN202443084U (en) | 2012-02-29 | 2012-02-29 | Automatic test device of alternative-current (AC) contactor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200719961U CN202443084U (en) | 2012-02-29 | 2012-02-29 | Automatic test device of alternative-current (AC) contactor |
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| CN202443084U true CN202443084U (en) | 2012-09-19 |
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| CN2012200719961U Withdrawn - After Issue CN202443084U (en) | 2012-02-29 | 2012-02-29 | Automatic test device of alternative-current (AC) contactor |
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| CN104900452A (en) * | 2014-03-06 | 2015-09-09 | 温州奔龙自动化科技有限公司 | Circuit breaker side surface pad printing device |
| CN103995228A (en) * | 2014-06-04 | 2014-08-20 | 温州奔龙自动化科技有限公司 | Breaker time delay characteristic detecting device |
| CN103995228B (en) * | 2014-06-04 | 2017-06-23 | 温州奔龙自动化科技有限公司 | A kind of breaker time-delay characteristics detection means |
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