Comment la machine automatique de comptage des vis et d'emballage des vis atteint-elle un comptage précis et un engagement automatique?

Les machines automatiques de comptage des vis et d'emballage sont largement utilisées dans l'industrie de la fixation matérielle. Leur tâche principale consiste à compter avec précision les vis de différentes spécifications et à les emballer dans des sacs, S'assurer que la quantité dans chaque sac est exacte pour répondre aux besoins de la production et de l'expédition par lots. Nous analyserons pleinement sa logique de fonctionnement à partir des aspects des principes techniques, points de contrôle des clés, Mécanisme de gestion des erreurs et d'ensachage.

1. Principle of accurate counting

Automatic counting is the core function of the device. Ses méthodes de comptage sont généralement divisées en catégories suivantes:

1.1 Fiber Optic Sensing Counting

This is the most common method. Un capteur photoélectrique infrarouge est installé sur le canal de déchargement de l'équipement. Lorsque la vis traverse le canal, Il bloquera la lumière. Chaque fois que le capteur sent une fois, le comptoir sera +1.

1.2 Plaque de vibration + multi-channel buffer tank counting

For small particles and mixed packaging of multiple specifications, Plusieurs plaques vibrantes sont utilisées pour l'alimentation, et chaque plaque vibrante décharge les matériaux à son tour à travers une goulotte spécifique.

• A photoelectric sensor is installed at the exit of each channel;
• The controller determines whether to stop feeding the channel according to the set quantity.

This method is suitable for mixed counting of 1-4 specifications, tel que “10 des vis + 2 des noisettes + 1 washer”, and supports multiple combinations.

1.3 Servo driven feeding device (high-end models)

Some high-end models use servo motors to accurately control the time and quantity of material discharge, combined with visual recognition (AI cameras or laser sensors) to assist in judging the passage of particles.

2. How to ensure accurate counting and error control?

2.1 Equipment control logic: stop when quantity is reached

The required quantity can be preset in the program. Par exemple, if it is set to 50, the system will stop the feeding system immediately after the photoelectric sensing accumulates 50 signals, and start sealing and packaging at the same time.

2.2 Real-time feedback control system

The advanced model is equipped with a PLC control system, which has:

• Self-learning function: can record the speed and shape error of different screws;
• Lack of material/stuck material alarm: prevent missed counting;
• Secondary detection: Some machines have secondary sensors for cross-verification before entering the packaging port to ensure accurate counting without omissions.

2.3 Error control range

The factory default error range is controlled within ±1 piece. Some high-precision equipment supports an error rate of <0.5% (for example, if it is set to 100 pièces, the actual range is between 99 et 101), depending on:

• Whether the screw size is uniform;
• Whether the channel is stable;
• Whether the vibration feeding is uniform;
• Whether the environmental static electricity/light interferes with the sensor.

3. How to achieve automatic bagging?

The entire automatic bagging is divided into the following links:

3.1 Material unloading and integration

• All screws fall into the merged channel through their respective channels;
• Enfin, they fall together above the formed bag mouth.

3.2 Bag forming or bag pre-loading

• Roll film type: PE film automatic bag making (back seal, three-side seal, etc.);
• Pre-made bags: manual or machine automatic placement of pre-formed bags.

3.3 Material unloading triggers sealing

• After counting is completed, the system controls the material unloading;
• After unloading, the heat sealing mechanism is immediately triggered (commonly used heat sealing or pulse sealing);
• Auxiliary functions such as date coder, gas injection, exhaust, etc.. can be configured.

3.4 Finished product output

• After sealing, it is output to the finished product area through the conveyor belt;
• It can be connected to a baler or a cartoner.

Flowchart (Simplified)

5. Why choose automatic counting and packaging machine?

6. Applicable industries

• Fastener manufacturers
• Furniture accessories packaging
• Electronic components packaging
• DIY screw package manufacturers
• Hardware packaging companies