CN110542846B - Testing device of full-automatic three-wheel tester - Google Patents
Testing device of full-automatic three-wheel tester Download PDFInfo
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- CN110542846B CN110542846B CN201910749674.4A CN201910749674A CN110542846B CN 110542846 B CN110542846 B CN 110542846B CN 201910749674 A CN201910749674 A CN 201910749674A CN 110542846 B CN110542846 B CN 110542846B
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- card
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/01—Subjecting similar articles in turn to test, e.g. "go/no-go" tests in mass production; Testing objects at points as they pass through a testing station
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2851—Testing of integrated circuits [IC]
- G01R31/2893—Handling, conveying or loading, e.g. belts, boats, vacuum fingers
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Engineering & Computer Science (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a testing device of a full-automatic three-wheel tester, which comprises a testing machine table, wherein an automatic card supplying mechanism, an automatic card clamping mechanism, a mobile control mechanism for controlling the automatic card clamping mechanism to move left and right and a three-wheel testing mechanism for performing length direction plug-pull testing on a card are arranged on the testing machine table, the automatic card supplying mechanism is positioned at one side of the automatic card clamping mechanism, the automatic card supplying mechanism horizontally scrapes out one card from the bottom every time to the automatic card clamping mechanism for clamping, and the mobile control mechanism drives the automatic card clamping mechanism to move left and right back and forth to perform the plug-pull testing on the card in the three-wheel testing mechanism. This kind of confession card mode of this application can improve the clamping speed of card, does not need the manual work to make a round trip to dismantle anchor clamps, reduces the amount of hand labor, and the card piles up the cavity and can once only pile up the card more than 50, does not need the manual work to come the playback card.
Description
Technical Field
The invention relates to intelligent card service life testing equipment, in particular to a testing device of a full-automatic three-wheel tester.
Background
The intelligent card is a double-interface chip card which is assembled by a PVC card, a chip and a coil and integrates a contact type interface and a non-contact type interface into a whole, and the intelligent card is provided with two operation interfaces, can access the chip by directly contacting the chip contact and can also access the chip by a radio frequency mode at a certain distance. The card has only one chip and two interfaces, and the same operation can be executed through a contact interface and a non-contact interface. After the assembly of the smart card is completed, the life and performance of the card need to be tested by simulating the plug-pull test of the test card which is plugged and unplugged on a machine in a reciprocating manner.
At present, a three-wheel tester called a smart card is provided, the patent number is ZL2016211713844, the three-wheel tester adopts manual clamping, clamping and card supplying, the clamping is performed by a clamping fixture, and the left-right movement control mechanism controls the fixture to perform back-and-forth plugging and pulling actions at the position measuring position of the three-wheel tester, so that the testing efficiency of the tester is very low, and the card needs to be clamped manually and repeatedly after one card is tested each time. Therefore, there is a need for improvements to existing three-wheel testers that are fully automated.
Disclosure of Invention
The invention aims to provide a testing device of a full-automatic three-wheel tester, aiming at the defects of the prior art.
In order to solve the above defects in the prior art, the technical scheme provided by the invention is as follows: the utility model provides a testing arrangement of full-automatic tricycle tester, includes the test board, be equipped with on the test board and supply automatic card mechanism, the automatic fixture of card, control the mobile control mechanism that removes about the automatic fixture of card and carry out the tricycle accredited testing organization of length direction plug test to the card, supply automatic card mechanism to be located one side of the automatic fixture of card, supply automatic card mechanism to scrape out a card extremely from the bottom level at every turn the automatic fixture of card carries out the centre gripping, mobile control mechanism drives make a round trip about the automatic fixture of card the tricycle accredited testing organization carries out the card plug test.
The automatic card supply mechanism comprises a card stacking plate and a card scraping mechanism, two strip-shaped holes which are arranged in parallel are arranged on the card stacking plate at intervals, one side of each strip-shaped hole is provided with a protective plate, the space between the two protective plates is a card stacking cavity, one side edge of each strip-shaped hole is provided with a card sinking step, a card sliding step is arranged between the two strip-shaped holes of the card stacking plate, and the card scraping mechanism scrapes cards stacked in the card stacking cavity from the bottom one by one horizontally to the automatic card clamping mechanism through the two strip-shaped holes, the card sinking steps and the card sliding steps.
As an improvement of the testing device of the full-automatic three-wheel tester, the card sliding step and the card sinking step are in a horizontal state.
The invention relates to an improvement of a testing device of a full-automatic three-wheel tester, wherein a card scraping mechanism comprises a motor fixing plate, two slide rails are arranged on the upper plane of the motor fixing plate at intervals, slide blocks are arranged on the two slide rails and connected through a movable plate, two claw scrapers are arranged at the upper end of the movable plate, the end parts of the two claw scrapers respectively penetrate through a strip-shaped hole, an inclined plane is arranged at the end part of each claw scraper, a movable plate driving motor is fixed on the lower plane of the motor fixing plate, a driving synchronous belt wheel is arranged on an output shaft of the movable plate driving motor, driven synchronous belt wheels are arranged at the two ends of the upper plane of the motor fixing plate respectively, the driving synchronous belt wheel drives the driven synchronous belt wheels through synchronous belts, and the synchronous belts are connected with the movable plate.
The automatic clamping mechanism for the card comprises a cylinder fixing plate, shaft seats are arranged on two sides of the cylinder fixing plate respectively, shaft rods penetrate through the two shaft seats, a clamping cylinder is arranged between the two shaft seats, an upper clamping block is arranged at the end part of a piston rod of the clamping cylinder, two ends of the upper clamping block are connected to the upper end of each shaft rod respectively, a lower clamping block is arranged at the upper end of the cylinder fixing plate, a piston rod of the clamping cylinder penetrates out of the lower clamping block, the upper clamping block is controlled by the clamping cylinder to move downwards to form clamping of the card in pairs with the lower clamping block, and the upper clamping block and the lower clamping block clamp one end edge part of the card.
As an improvement of the testing device of the full-automatic three-wheel tester, the movement control mechanism comprises two synchronous pulley fixing seats and a linear slide rail fixed on a testing machine table, second synchronous pulleys are arranged on the two synchronous pulley fixing seats respectively, the two second synchronous pulleys are connected through a second synchronous belt, one of the second synchronous pulleys is connected with a motor through a rotating shaft, a linear slide block is connected onto the second synchronous belt, and the linear slide block is connected with the linear slide rail and the air cylinder fixing plate.
As an improvement of the testing device of the full-automatic three-wheel tester, the three-wheel testing mechanism comprises a base, two rotatable lower rollers are arranged on the base, a pressing block is arranged above the lower rollers, a rotatable upper roller is arranged at the lower end of the pressing block, a weight is placed at the upper end of the pressing block, and the pressing block is arranged above the base in a vertically sliding manner.
The test machine platform is provided with a card collecting groove at one side of the three-wheel test mechanism, the movement control mechanism drives the cards on the automatic card clamping mechanism to move back and forth for a certain number of times, and then the movement control mechanism drives the cards on the automatic card clamping mechanism to move to the position of the card collecting groove, and the cards are placed in the card collecting groove to be collected.
As an improvement of the testing device of the full-automatic three-wheel tester, both sides of the testing machine are provided with placing frames for placing weights, and the front side of the testing machine is provided with a control panel.
As an improvement of the testing device of the full-automatic three-wheel tester, the placing frame is provided with two placing areas, weight clamping grooves are formed in the two placing areas, and notches are formed in the outer sides of the two weight clamping grooves.
Compared with the prior art, the invention has the advantages that: the automatic card feeding mechanism and the automatic card clamping mechanism are adopted, the automatic card feeding mechanism skillfully adopts a bottom card scraping mode, only one card is scraped each time, the depths of a card sinking step and a card sliding step are set according to the thickness of the card, the depths of the card sinking step and the card sliding step are set to be only suitable for one card to pass, and the card scraping mechanism scrapes the card through the parts of two scraping claws and scrapes the card to the automatic card clamping mechanism for clamping. This kind of confession card mode of this application can improve the clamping speed of card, does not need the manual work to make a round trip to dismantle anchor clamps, reduces the amount of hand labor, and the card piles up the cavity and can once only pile up the card more than 50, does not need the manual work to come the playback card.
Drawings
The invention and its advantageous technical effects are described in further detail below with reference to the accompanying drawings and detailed description, in which:
fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic view of the internal structure of the present invention.
Fig. 3 is another internal structure diagram of the present invention.
Fig. 4 is a schematic perspective view of the automatic card feeding mechanism of the present invention.
Fig. 5 is an enlarged view at a in fig. 4.
Reference symbol names:
1. testing the machine table; 11. the card collecting groove is characterized by comprising a card collecting groove 12, a placing rack 13, a control panel 14, a placing area 15, a weight clamping groove 16 and a gap;
2. an automatic card supply mechanism; 21. the card stacking mechanism comprises a card stacking plate 22, a card scraping mechanism 23, a strip-shaped hole 24, a protective plate 25, a card stacking cavity 26, a card sinking step 27, a card sliding step 221, a motor fixing plate 222, a slide rail 223, a slide block 224, a moving plate 225, a card scraping claw 226, an inclined surface 227, a moving plate driving motor 228, a driving synchronous pulley 229, a driven synchronous pulley 220 and a synchronous belt;
3. an automatic card clamping mechanism; 31. the device comprises a cylinder fixing plate 32, a shaft seat 33, a shaft lever 34, an upper clamping block 35 and a lower clamping block;
4. a movement control mechanism; 41. the linear sliding rail 42, the synchronous pulley fixing seat 43, the second synchronous pulley 44, the second synchronous belt 45, the motor 46 and the linear sliding block;
5. a three-wheel testing mechanism; 51. base 52, lower roller 53, briquetting 54, upper roller 55, weight.
Detailed Description
The invention will be further described below with reference to the drawings and specific examples, but the embodiments of the invention are not limited thereto.
As shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, a testing device of a full-automatic three-wheel tester, including the testing board 1, be equipped with on the testing board 1 and supply automatic card mechanism 2, automatic fixture 3 of card, control the mobile control mechanism 4 that moves about automatic fixture 2 of card and carry out the three-wheel test mechanism 5 of length direction plug test to the card, automatic card mechanism 2 that supplies is located one side of automatic fixture 3 of card, automatic card mechanism 2 that supplies scrapes out a card to automatic fixture 3 of card from the bottom level at every turn carries out the centre gripping, mobile control mechanism 4 drives automatic fixture 3 of card and makes a round trip to carry out the plug test of card at three-wheel test mechanism 5 about.
Preferably, automatic card mechanism 2 that supplies includes that the card stacks board 21 and scrapes card mechanism 22, the card stacks board 21 and goes up the interval and is equipped with two parallel arrangement's bar hole 23, one side of two bar holes 23 all is equipped with a backplate 24, space between two backplate 24 piles up cavity 25 for the card, a side edge of two bar holes 23 all is equipped with card step 26 that sinks, card stacks board 21 and is located and is equipped with card slip step 27 between two bar holes 23, scrape card mechanism 22 through two bar holes 23, card step 26 that sinks and card slip step 27 and pile up the card in the cavity 25 and stack up the card and scrape to the automatic fixture 3 of card from the level of one sheet in bottom.
Preferably, the card sliding step 27 and the card lowering step 26 are in a horizontal state. The depth of the card slide step 27 and the card lowering step 26 is the thickness of the card and can pass through just one card.
Preferably, the card scraping mechanism 22 includes a motor fixing plate 221, two sliding rails 222 are disposed on an upper plane of the motor fixing plate 221 at intervals, sliding blocks 223 are disposed on the two sliding rails 222, the sliding blocks 223 on the two sliding rails 222 are connected through a moving plate 224, two scraping claws 225 are disposed at an upper end of the moving plate 224, end portions of the two scraping claws 225 respectively penetrate through the strip-shaped holes 23, an inclined plane 226 is disposed at an end portion of each of the two scraping claws 225, a moving plate driving motor 227 is fixed on a lower plane of the motor fixing plate 221, a driving synchronous pulley 228 is disposed on an output shaft of the moving plate driving motor 227, driven synchronous pulleys 229 are disposed at two ends of an upper plane of the motor fixing plate 221, the driving synchronous pulley 228 drives the driven synchronous pulleys 229 through a synchronous belt 220, and the synchronous belt 220 is connected with the moving plate 224.
Preferably, the automatic fixture 3 of card includes cylinder fixing plate 31, the both sides of cylinder fixing plate 31 are equipped with axle bed 32 respectively, all wear to be equipped with axostylus axostyle 33 on two axle beds 32, be equipped with the centre gripping cylinder between two axle beds 32, the tailpiece of the piston rod portion of centre gripping cylinder is equipped with clamp splice 34, the both ends of going up clamp splice 34 are connected respectively in axostylus axostyle 33 upper end, the upper end of cylinder fixing plate 31 is equipped with clamp splice 35 down, the piston rod of centre gripping cylinder wears out from clamp splice 35 down, it moves down by centre gripping cylinder control with clamp splice 35 down and forms the centre gripping to the card to go up clamp splice 34 and the one end edge portion of clamp splice 35 centre gripping card down.
Preferably, the movement control mechanism 4 includes two synchronous pulley fixing seats 41 and a linear sliding rail 42 fixed on the testing machine 1, a second synchronous pulley 43 is disposed on each of the two synchronous pulley fixing seats 42, the two second synchronous pulleys 43 are connected through a second synchronous belt 44, one of the second synchronous pulleys 43 is connected through a rotating shaft to a motor 45, a linear sliding block 46 is connected to the second synchronous belt 44, and the linear sliding rail 42 and the cylinder fixing plate 31 are connected to the linear sliding block 46.
Preferably, the three-wheel testing mechanism 5 comprises a base 51, two rotatable lower rollers 52 are arranged on the base 51, a pressing block 53 is arranged above the lower rollers 52, a rotatable upper roller 54 is arranged at the lower end of the pressing block 53, a weight 55 is placed at the upper end of the pressing block 53, and the pressing block 53 is arranged above the base 51 in a vertically sliding manner. Analog pressure is adjusted through adjusting 55 quantity of weights on briquetting 53, and under self action of gravity, the last gyro wheel of briquetting 53 bottom can the base of butt below, presses operation switch start test afterwards, and automatic fixture of card takes the card to move to tricycle accredited testing organization, makes the chip on the card insert from last gyro wheel and down between the gyro wheel, through the plug that makes a round trip that relapses like this, can test resistant plug degree parameter on the card.
Preferably, the test machine platform position 1 is equipped with card collecting vat 11 in one side of tricycle accredited testing organization 5, and after mobile control mechanism 4 drove the card round trip movement on the automatic fixture 3 of card to certain number of times, mobile control mechanism 4 drove the card on the automatic fixture 3 of card and removed to the position of card collecting vat 11, put into card collecting vat 11 with the card and collect.
Preferably, both sides of the testing machine 1 are provided with placing racks 12 for placing weights, and the front side of the testing machine 1 is provided with a control panel 13.
Preferably, the placing rack 12 is provided with two placing areas 14, the two placing areas 14 are provided with weight clamping grooves 15, and the outer sides of the two weight clamping grooves 15 are provided with notches 16.
The automatic card feeding mechanism and the automatic card clamping mechanism are adopted, the automatic card feeding mechanism skillfully adopts a bottom card scraping mode, only one card is scraped each time, the depths of a card sinking step and a card sliding step are set according to the thickness of the card, the depths of the card sinking step and the card sliding step are set to be only suitable for one card to pass, and the card scraping mechanism scrapes the card through the parts of two scraping claws and scrapes the card to the automatic card clamping mechanism for clamping. This kind of confession card mode of this application can improve the clamping speed of card, does not need the manual work to make a round trip to dismantle anchor clamps, reduces the amount of hand labor, and the card piles up the cavity and can once only pile up the card more than 50, does not need the manual work to come the playback card.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and arrangements of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The testing device of the full-automatic three-wheel tester comprises a testing machine table and is characterized in that an automatic card supplying mechanism, an automatic card clamping mechanism, a movement control mechanism for controlling the automatic card clamping mechanism to move left and right and a three-wheel testing mechanism for performing length direction plug-in test on a card are arranged on the testing machine table, the automatic card supplying mechanism is positioned on one side of the automatic card clamping mechanism, the automatic card supplying mechanism horizontally scrapes out one card from the bottom at each time and clamps the card by the automatic card clamping mechanism, and the movement control mechanism drives the automatic card clamping mechanism to move left and right back and forth to perform the plug-in test on the card by the three-wheel testing mechanism;
automatic card supply mechanism includes that the card stacks the board and scrapes card mechanism, the card stacks the board and goes up the strip hole that the interval was equipped with two parallel arrangement, two one side in strip hole all is equipped with a backplate, and space between two backplates is the card and piles up the cavity, two one side edge in strip hole all is equipped with the card and sinks the step, the card stacks the board and is located two be equipped with card slip step between the strip hole, it will to scrape card mechanism through two strip hole, card sink step and card slip step the card is piled up the card that piles up in the cavity and is scraped to the automatic fixture of card from the level of bottom one by one.
2. The testing device of the fully automatic three-wheel testing machine according to claim 1, wherein the card sliding step and the card sinking step are in a horizontal state.
3. The testing device of the full-automatic three-wheel tester as claimed in claim 2, wherein the card scraping mechanism comprises a motor fixing plate, two sliding rails are arranged on an upper plane of the motor fixing plate at intervals, sliding blocks are arranged on the two sliding rails, the two sliding blocks on the sliding rails are connected through a moving plate, two claw scrapers are arranged at the upper end of the moving plate, the end parts of the two claw scrapers respectively penetrate through the bar-shaped holes, an inclined plane is arranged at the end part of each claw scraper, a moving plate driving motor is fixed on a lower plane of the motor fixing plate, a driving synchronous pulley is arranged on an output shaft of the moving plate driving motor, driven synchronous pulleys are arranged at two ends of the upper plane of the motor fixing plate respectively, the driving synchronous pulleys drive the driven synchronous pulleys through synchronous belts, and the synchronous belts are connected with the moving plate.
4. The testing device of the full-automatic three-wheel tester as claimed in claim 1, wherein the automatic clamping mechanism of the card comprises a cylinder fixing plate, two sides of the cylinder fixing plate are respectively provided with a shaft seat, a shaft rod penetrates through each of the two shaft seats, a clamping cylinder is arranged between the two shaft seats, an upper clamping block is arranged at the end of a piston rod of the clamping cylinder, two ends of the upper clamping block are respectively connected to the upper end of the shaft rod, a lower clamping block is arranged at the upper end of the cylinder fixing plate, a piston rod of the clamping cylinder penetrates out of the lower clamping block, the upper clamping block is controlled by the clamping cylinder to move downwards to form clamping of the card in pairs with the lower clamping block, and the upper clamping block and the lower clamping block clamp one end edge of the card.
5. The testing device of the full-automatic three-wheel tester as claimed in claim 4, wherein the movement control mechanism comprises two fixed seats of the synchronous pulley and a linear slide rail fixed on the testing machine, each of the two fixed seats of the synchronous pulley is provided with a second synchronous pulley, the two second synchronous pulleys are connected through a second synchronous belt, one of the second synchronous pulleys is connected with a motor through a rotating shaft, the second synchronous belt is connected with a linear slider, and the linear slider is connected with the linear slide rail and the cylinder fixing plate.
6. The testing device of the full-automatic three-wheel tester as claimed in claim 4, wherein the three-wheel testing mechanism comprises a base, two rotatable lower rollers are arranged on the base, a pressing block is arranged above the lower rollers, a rotatable upper roller is arranged at the lower end of the pressing block, a weight is placed at the upper end of the pressing block, and the pressing block is arranged above the base in a manner of sliding up and down.
7. The testing device of the full-automatic three-wheel tester as claimed in claim 1, wherein the testing machine platform is provided with a card collecting slot at one side of the three-wheel testing mechanism, the moving control mechanism drives the card on the automatic card holding mechanism to move back and forth for a certain number of times, and then the moving control mechanism drives the card on the automatic card holding mechanism to move to the position of the card collecting slot, so as to place the card in the card collecting slot for collection.
8. The testing device of the full-automatic three-wheel tester as claimed in claim 1, wherein both sides of the testing machine are provided with placing racks for placing weights, and the front side of the testing machine is provided with a control panel.
9. The testing device of the full-automatic three-wheel tester as claimed in claim 8, wherein the rack is provided with two placement areas, the two placement areas are provided with weight clamping grooves, and the outer sides of the two weight clamping grooves are provided with notches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910749674.4A CN110542846B (en) | 2019-08-14 | 2019-08-14 | Testing device of full-automatic three-wheel tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910749674.4A CN110542846B (en) | 2019-08-14 | 2019-08-14 | Testing device of full-automatic three-wheel tester |
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| Publication Number | Publication Date |
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| CN110542846A CN110542846A (en) | 2019-12-06 |
| CN110542846B true CN110542846B (en) | 2022-01-28 |
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| CN201910749674.4A Active CN110542846B (en) | 2019-08-14 | 2019-08-14 | Testing device of full-automatic three-wheel tester |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203311436U (en) * | 2013-05-31 | 2013-11-27 | 上海慧升智能科技有限公司 | Card passing module of smart card personalization device |
| KR101373423B1 (en) * | 2012-10-30 | 2014-03-14 | 세메스 주식회사 | Apparatus for inspecting display cells |
| CN206132931U (en) * | 2016-10-26 | 2017-04-26 | 东莞市锐祥智能卡科技有限公司 | Tricycle tester of smart card |
| CN206634789U (en) * | 2017-02-28 | 2017-11-14 | 深圳源明杰科技股份有限公司 | Cards conveying device |
| CN207731307U (en) * | 2017-12-21 | 2018-08-14 | 深圳怡化电脑股份有限公司 | A kind of card-issuing device |
| CN208067850U (en) * | 2018-04-10 | 2018-11-09 | 广州三拓金属加工机械有限公司 | A kind of piece-holder hand |
-
2019
- 2019-08-14 CN CN201910749674.4A patent/CN110542846B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101373423B1 (en) * | 2012-10-30 | 2014-03-14 | 세메스 주식회사 | Apparatus for inspecting display cells |
| CN203311436U (en) * | 2013-05-31 | 2013-11-27 | 上海慧升智能科技有限公司 | Card passing module of smart card personalization device |
| CN206132931U (en) * | 2016-10-26 | 2017-04-26 | 东莞市锐祥智能卡科技有限公司 | Tricycle tester of smart card |
| CN206634789U (en) * | 2017-02-28 | 2017-11-14 | 深圳源明杰科技股份有限公司 | Cards conveying device |
| CN207731307U (en) * | 2017-12-21 | 2018-08-14 | 深圳怡化电脑股份有限公司 | A kind of card-issuing device |
| CN208067850U (en) * | 2018-04-10 | 2018-11-09 | 广州三拓金属加工机械有限公司 | A kind of piece-holder hand |
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| CN110542846A (en) | 2019-12-06 |
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