Cards sorter

[pasquentmax]

Hello to all

Just a small comment to share my last creation, the sorter of cards, machine which is not strictly of no use but whose realization was not simple:

* difficulty of sorting of cards one by one

* Difficulty with a single module Ev3 to manage all the functions of which the food of cards

* Difficulty in identifying the heart with regard to the tile

* Difficulty in separating 8 and 7

Here is the machine allows to make all the possible sortings, the colors, the individual cards, the figures ...

 

 

[WvG_853]

Great MOC! Really impressive ... Also the spitting out of the single cards. How did you solve this?

[pasquentmax]

Hi thanks 

Do you mean mechanical solution or recognition solution ?

[Bublehead]

Looks like card manipulation, physical dispensing that is, is a two step process to stage the top card first then kick it out. Not sure if you are using this exact approach but if I was approaching the problem, it would use wheels to move the top card or cards (if two or more stick together) staging them towards a second set of wheels. The card or card stack of stuck together cards are then sent through two sets of wheels that pinch the cards, with one going twice the speed of the other in the opposite direction, this then rejects the bottom cards (by pushing them back since bottom roller wheels are traveling in the “back into the deck” direction, the top roller wheels pushing the good card in the “out of the deck” direction at a higher speed  and either out of the machine or through a constantly running set of final pinch rollers that send the card totally out of the machine at high speed. At least that’s what I would try first. It’s the similar mechanism used in printers to select a single sheet of paper, one at a time.

Your process looks similar, but you are also manipulating the top card (or stack of stuck together cards) up and down, but this may just be to push the cards up to engage the topside roller or down onto the bottomside rollers.  But please share your solution, it seems to work very well. Interesting project. Well done.

[Jim]

1 hour ago, WvG_853 said:

Great MOC! Really impressive ... Also the spitting out of the single cards. How did you solve this?

I am interested in this as well.

I have been contemplating on making a card printing machine in the past (pvc cards, like bank cards), but I struggled with the one at a time card dispensing mechanism.

[pasquentmax]

Bonjour et merci

Pour la sélection des cartes j'utilise un moteur et une crémaillère dans l'axe "z" pour mettre à niveau les cartes après le chargement puis après chaque éjection de carte. Ensuite le moteur d'éjection des cartes est monté sur une compensation élastique pour que la pression soit toujours identique. Pour ce moteur d'éjection j'utilise deux trains de roue, un premier qui sort la carte et un deuxième qui va deux fois plus vite et qui l'éjecte. Ensuite par une rotation arrière je remets les cartes du dessus du paquet en position. A noter que les cartes viennent en butée à l'avant sur un axe fileté libre ce qui permet à la première carte de sortir mais qui a tendance à bloquer les autres.

[Davidz90]

Wow, that's some seriously impressive image recognition algorithm!

[WvG_853]

1 hour ago, pasquentmax said:

Bonjour et merci

Pour la sélection des cartes j'utilise un moteur et une crémaillère dans l'axe "z" pour mettre à niveau les cartes après le chargement puis après chaque éjection de carte. Ensuite le moteur d'éjection des cartes est monté sur une compensation élastique pour que la pression soit toujours identique. Pour ce moteur d'éjection j'utilise deux trains de roue, un premier qui sort la carte et un deuxième qui va deux fois plus vite et qui l'éjecte. Ensuite par une rotation arrière je remets les cartes du dessus du paquet en position. A noter que les cartes viennent en butée à l'avant sur un axe fileté libre ce qui permet à la première carte de sortir mais qui a tendance à bloquer les autres.

Merci pour l’explication ...

I guess the rest will have to use Google translate!

[pasquentmax]

On 9/23/2018 at 11:03 PM, Davidz90 said:

Wow, c'est un algorithme de reconnaissance d'image très impressionnant!

 

Yes there are certain recognitions difficult to make between kings, queens and servants, as well as between 7 and 8, the tile and the heart. It is necessary to make a scaner which analyzes not always compatible very precise portions of image with the mechanics of the lego and the precision of the sensor of light

Edited December 3, 2018 by pasquentmax

[Jim]

Thanks for the explanation! Can you try to write in English please? This is an English forum but it is no problem if your English isn’t perfect  

[pasquentmax]

Hello and thank you

 

sorry I will write in english, non problem

For the selection of cards I use an engine and a rack in the axis "z" to make level cards after the load then after every ejection of card. Then the engine of ejection of cards rose on an elastic compensation so that the pressure is always identical. For this engine of ejection I use two trains of wheel, the first one who takes out the card and the second which goes twice as fast and which ejects (it). Then by a back rotation I put back the cards of the top of the package in position. To note that cards come in abutment in front on a free thread axis what allows the first card to go out but what tends to block the others.