¿Cómo logra la máquina automática de conteo y embalaje de tornillos y un conteo preciso y un bolsillo automático?

Las máquinas automáticas de conteo de tornillos y envases se utilizan ampliamente en la industria del sujetador de hardware. Su tarea principal es contar con precisión tornillos de diferentes especificaciones y empacarlos en bolsas, Asegurar que la cantidad en cada bolsa sea precisa para satisfacer las necesidades de la producción y el envío por lotes. Analizaremos completamente su lógica operativa desde los aspectos de los principios técnicos., Puntos de control clave, Gestión de errores y mecanismo de embolsado.

1. Principle of accurate counting

Automatic counting is the core function of the device. Sus métodos de conteo generalmente se dividen en las siguientes categorías:

1.1 Fiber Optic Sensing Counting

This is the most common method. Se instala un sensor fotoeléctrico infrarrojo en el canal de descarga del equipo. Cuando el tornillo pasa a través del canal, bloqueará la luz. Cada vez que el sensor siente una vez, El mostrador será +1.

1.2 Placa vibratoria + multi-channel buffer tank counting

For small particles and mixed packaging of multiple specifications, Se utilizan múltiples placas vibratorias para alimentarse, y cada placa vibratoria descarga los materiales a su vez a través de un tolva específica.

• 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, como “10 tornillos + 2 nueces + 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. Por ejemplo, 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 piezas, the actual range is between 99 y 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;
• Finalmente, 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