Preparations Before Using the High Speed Nail Making Machine

Preliminary Preparation: Site Planning and Equipment Installation

In industrial production, the operating stability of high-speed nail making machines is closely related to site conditions. First of all, the site selection should be far away from residential areas to avoid noise generated by equipment operation from interfering with the surrounding environment. At the same time, select an area with strong ground bearing capacity. Generally, the ground bearing capacity per square meter is required to be not less than 500 kg to ensure that the nail making machine will not tilt due to ground settlement during operation, affecting the nail making accuracy.

During the equipment installation process, the installation drawings provided by the manufacturer must be strictly followed. Before installation, all parts must be counted and quality checked for damage caused during transportation. During installation, first fix the main frame of the nail making machine on the pre-laid shock-absorbing pad. The thickness of the shock-absorbing pad is generally 5-8 cm, and the material can be rubber or polyurethane to reduce the vibration transmission during equipment operation. Then install the transmission system, feeding system and electrical control system in turn. When connecting each component, ensure that the bolt tightening torque meets the specified standard. For example, for M12 bolts, the tightening torque must reach 80-100 Nm.

Inspection Before Starting: Ensure Safe Operation of The Equipment

The inspection before starting is the key to ensuring the safe and stable operation of the equipment. When checking the transmission belt, use a professional belt tension meter to measure the belt tension. Generally, the belt tension of the high-speed nail making machine needs to be maintained at 50-70 Newtons. If the tension is insufficient, it can be adjusted by adjusting the position of the belt tensioner. For the lubrication system, check the oil quality and oil quantity of the lubricating oil, observe the color of the lubricating oil through the oil mirror, and replace it in time if it is black or turbid. At the same time, use the oil dipstick to measure the oil level to ensure that the oil level is between the upper and lower limit scales.

The inspection of the feeding system cannot be ignored. Carefully check whether there is any material or other debris left in the hopper from the last production. After cleaning, check the surface roughness of the feeding roller. Under normal circumstances, the surface roughness of the roller should not be greater than Ra3.2μm. If there are wear grooves on the surface of the roller, it needs to be replaced in time, otherwise it will affect the stability and accuracy of feeding. In addition, check whether the feeding track is deformed or stuck. You can test the smoothness of the track by manually pushing the feeding trolley.

Basic Operation: Start The Nail Making Journey

When starting the equipment, first reset all the knobs on the control panel to zero, and then press the power start button. Wait for the equipment to complete the self-test procedure. During the self-test, observe whether there is a fault code displayed on the display. If the “E01” code appears, it means that the transmission system is faulty; the “E02” code means that the feeding system is abnormal, and it needs to be checked according to the fault code prompt.

When the equipment passes the self-test, start adding raw materials. Taking metal wire as an example, lead the wire from the wire rack and pass it through the straightener, feeding roller and mold entrance in turn. During the threading process, ensure that the center line of the wire coincides with the center line of the mold, and the deviation must not exceed 0.5 mm. Start the feeding motor, set the feeding speed to low gear (usually 5-8 meters per minute), and observe whether the feeding of the wire is stable.

During the nail making process, monitor the forming quality of the nails in real time. Use a vernier caliper to measure the length and diameter of the nails with a measurement accuracy of 0.01 mm. If the nail length deviates, it can be corrected by adjusting the forming length adjustment knob of the mold; if the diameter does not meet the requirements, the mold of the corresponding specifications needs to be replaced. At the same time, observe the forming of the nail cap. If the nail cap is skewed or not full, check whether the pressure distribution of the mold is uniform, which can be analyzed and adjusted through the pressure sensor data.

Nail Making Machine: Boosting Efficiency and Cutting Energy Use

Optimizing Feeding Rhythm: Improving Equipment Utilization

Optimizing feeding rhythm can significantly improve the production efficiency of nail making machine. When using automatic feeding system, set the feeding interval time and feeding length through the PLC control system. For example, for nails with a production length of 50 mm, the feeding length can be set to 51 mm (reserving 1 mm processing allowance), and the feeding interval time is adjusted according to the nail making speed of the equipment, generally between 0.5 and 1 second. At the same time, photoelectric sensors are installed on the feeding track to monitor the remaining amount of wire in real time. When the remaining amount of wire reaches the set threshold, the alarm device is automatically activated to remind the operator to replenish the raw materials in time to avoid equipment shutdown due to material breakage.

Pretreatment of raw materials can effectively improve the smoothness of feeding. For metal wires, online rust removal is carried out before entering the nail making machine, which can be done by shot blasting or chemical rust removal. The surface roughness of the wire after rust removal should reach Ra6.3 – Ra12.5μm, which can not only reduce the friction between the wire and the equipment components, but also improve the surface quality of the nails. In addition, preheating the wire and raising the wire temperature to 40 – 60℃ can reduce the hardness of the wire, making it easier to form, thereby improving the efficiency of nail making.

Accurately Adjust The Parameters: Achieve High Efficiency and Energy Saving

Accurately adjusting the parameters of the nailing machine is the core of achieving high efficiency and energy saving. In terms of temperature control, taking the production of stainless steel nails as an example, the heating furnace is divided into three areas: preheating zone, heating zone and insulation zone. The temperature of the preheating zone is set at 600 – 700℃, the temperature of the heating zone is 1000 – 1100℃, and the temperature of the insulation zone is maintained at 900 – 950℃. The temperature is monitored in real time by the thermocouple installed in the heating furnace, and the data is fed back to the temperature control system. When the temperature deviation exceeds ±10℃, the system automatically adjusts the heating power to ensure temperature stability.

The pressure parameters should be adjusted according to the material and specifications of the nails. When producing ordinary iron nails, the working pressure of the mold is generally 6- 8MPa; when producing high-strength alloy steel nails, the pressure needs to be increased to 10-12MPa. When adjusting the pressure, proceed slowly, and the adjustment range should not exceed 0.5MPa each time to avoid damage to the mold due to sudden pressure changes. At the same time, combined with the data of the pressure sensor, the pressure changes of the mold are monitored in real time to ensure that the pressure is evenly distributed in the forming part of the nail.

The speed regulation will also affect the nail making efficiency and energy consumption. For high-speed nail making machines, while ensuring the quality of nails, appropriately increasing the spindle speed can improve production efficiency. However, too high a speed will increase the wear and energy consumption of the equipment. It is generally recommended that the spindle speed be controlled at 1500-2000 rpm. By adjusting the motor speed through the inverter, the speed can be adjusted smoothly and the energy loss during starting and stopping can be reduced.

Nail Production Strategy: Adjusting Machine Parameters for Various Materials

Metal Nail Production: Grasp The Balance of Temperature and Pressure

When producing metal nails, the balance of temperature and pressure is crucial. Taking the production of galvanized iron nails as an example, during the heating process, it is necessary to prevent the zinc layer from melting prematurely. Therefore, the heating temperature should not be too high, and is generally controlled at 850-900℃. At the same time, in order to ensure the strength and toughness of the nails, rapid cooling treatment is required after forming. Water cooling can be used to reduce the temperature of the nails to below 200℃ within 10 seconds.

In terms of pressure adjustment, it is adjusted according to the thickness and length of the nails. For iron nails with a diameter of 3 mm and a length of 30 mm, the mold pressure is set to 7MPa; for iron nails with a diameter of 5 mm and a length of 50 mm, the pressure needs to be increased to 9MPa. During the pressure application process, it is necessary to ensure that the pressure rises and falls smoothly to avoid pressure shocks that affect the molding quality of the nails.

Plastic Nail Production: Focus on Melting Point and Fluidity

When producing plastic nails, the melting point of the plastic must be accurately grasped first. Taking polyvinyl chloride (PVC) plastic as an example, its melting point is 160-180℃. During the production process, the barrel temperature needs to be set to 180-200℃ to ensure that the plastic is fully melted. At the same time, in order to improve the fluidity of the plastic, an appropriate amount of lubricant, such as calcium stearate, can be added to the raw material. The amount added is generally 0.5-1% of the weight of the raw material.

The adjustment of pressure parameters is relatively small, generally between 1.5 and 2.5 MPa. Excessive pressure will cause overflow on the surface of the nail; too little pressure will cause the nail to be not fully formed. When adjusting the pressure, it is necessary to adjust it in combination with the structure and size of the mold. For example, for thin-walled plastic nails, the pressure can be appropriately reduced to 1.5MPa, while for thick-walled nails, the pressure can be increased to 2.5MPa.

The control of feeding speed will also affect the quality of plastic nails. Due to the rapid cooling speed of plastic, the feeding speed should not be too fast, and is generally controlled at 15-20 meters per minute. Too fast feeding speed will cause the plastic to not be fully filled in the mold in time, resulting in defects such as a lack of material and bubbles.

Wood Composite Nail Production: Focus on Mixing and Extrusion

The mixing process of raw materials is the key to the production of wood composite nails. Mix wood fiber, adhesive, and additives in a certain proportion, generally 60-70% of wood fiber, 20-30% of adhesive, and 5-10% of additives. During the mixing process, a double-shaft mixer is used for stirring, and the stirring speed is controlled at 30-50 rpm, and the stirring time is 10-15 minutes to ensure that all components are evenly mixed.

During extrusion molding, the temperature is set to 160-180℃, and the pressure is 5-7MPa. During the extrusion process, the temperature and pressure should be kept stable to avoid uneven internal structure of the nails due to temperature fluctuations or pressure changes. At the same time, the extrusion speed is controlled at 8-12 meters per minute to fully compact the wood composite material in the mold and improve the strength of the nails.

Nail Making Machine: Common Faults and Emergency Solutions

Feed jam: Multi-Dimensional Troubleshooting

When the nail making machine has a feeding jam, first check it from a mechanical aspect. Check whether the bearing of the feeding roller is damaged. You can manually turn the roller to feel whether the rotation resistance is abnormal. If the bearing is damaged, it is necessary to replace the bearing of the same model in time. When replacing, pay attention to the installation direction and clearance adjustment of the bearing. At the same time, check whether the feeding track is deformed or blocked by foreign objects, clean up the debris in the track, and use a level to detect the flatness of the track. If the deviation exceeds 0.2 mm, it needs to be corrected.

Electrical system failure may also cause feeding jam. Check whether the power cord of the feeding motor is loose or damaged, use a multimeter to measure the winding resistance of the motor, and determine whether the motor is normal. If the motor winding resistance is abnormal, you need to contact professional maintenance personnel for maintenance. In addition, check whether the output signal of the PLC control system is normal. You can diagnose by observing the indicator light status of the PLC and using the programming software. If the output signal is abnormal, you need to check the relevant program and wiring.

Nail Shape Deviation: Comprehensive Inspection From Mold to Parameters

The problem of nail shape deviation needs to be checked from both mold and equipment parameters. First, check the wear of the mold and use a micrometer to measure the key dimensions of the mold, such as the diameter hole of the nail and the nail cap forming groove. If the mold wear exceeds the tolerance range (generally, the diameter tolerance is ±0.05 mm and the length tolerance is ±0.1 mm), the mold needs to be replaced in time. At the same time, check whether the mold is installed correctly, ensure that the mold’s positioning pins are fully matched with the equipment’s positioning holes, and the tightening torque of the mold’s fastening bolts meets the specified requirements.

Incorrect equipment parameter settings can also cause nail shape deviation. Recheck the length, diameter, pressure and other parameter settings of the nail making machine and compare them with the production process requirements. For example, if the nail length is short, check whether the setting value of the length adjustment knob is correct, and check the installation position and sensitivity of the length detection sensor. If the diameter does not meet the requirements, adjust the mold’s diameter adjustment parameters and check the matching of the feeding speed and the mold forming speed.

Equipment Abnormal Noise: Locate the Source and Deal With It in Time

When the equipment makes abnormal noise, first determine the source of the abnormal noise. Use tools such as a stethoscope or a long-handled screwdriver to listen to different parts of the equipment. If the abnormal noise comes from the transmission system, check whether the belt is slipping, and observe whether there are obvious friction marks and heating phenomena on the belt surface. If the belt slips, adjust the belt tension or replace a new belt. At the same time, check the meshing of the transmission gears, check whether there are defects such as wear and cracks on the gear surface, and repair or replace the gears if necessary.

If the abnormal noise comes from the motor, check whether the motor bearing is damaged, which can be judged by measuring the vibration value of the motor. Under normal circumstances, the effective value of the vibration speed of the motor should not exceed 4.5 mm/s. If the vibration value exceeds the standard, the motor needs to be disassembled to check the bearings and replace the damaged bearings. In addition, check whether the rotor of the motor is eccentric, which can be measured with a dial indicator. If the eccentricity exceeds 0.03 mm, the rotor needs to be calibrated or replaced.

Nail Making Machines: Stable Operation and Cost-Effective Maintenance

Daily Cleaning: Keep The Equipment Clean

Daily cleaning is the basic work of nail making machine maintenance. After the end of production every day, use compressed air to clean the dust and debris on the surface of the equipment, and the compressed air pressure is controlled at 0.4-0.6MPa. For oil stains that are difficult to clean, special industrial cleaners can be used for wiping. The pH value of the cleaner should be controlled between 7-9 to avoid corrosion on the surface of the equipment.

Focus on cleaning the feeding system and mold parts. Use a brush to clean the residual materials in the feeding roller and track to ensure that the feeding channel is unobstructed. For molds, use copper tools to remove attachments on the mold surface and avoid using steel tools to scratch the mold surface. After cleaning, apply a layer of anti-rust oil on the mold surface. The film thickness of the anti-rust oil is controlled at 5-8 microns to prevent the mold from rusting.

Maintenance of Key Components: Extending Service Life

The maintenance of key components of the nail making machine is directly related to the service life of the equipment. For bearings, lubrication maintenance is performed every 1000 working hours. Use high-temperature grease for lubrication, and the dropping point of the grease should not be lower than 260℃. When lubricating, first clean the old grease in the bearing, and then fill it with new grease, the filling amount is 1/3 – 1/2 of the bearing cavity volume.

Gear maintenance is also very important. Regularly check the meshing clearance of the gears. Generally, the side clearance of the gears should be kept between 0.1 – 0.2 mm. If the clearance is too large, the installation position of the gear needs to be adjusted; if the clearance is too small, the gear needs to be ground. At the same time, use gear oil to lubricate the gears, and the kinematic viscosity of the gear oil should reach 100 – 150mm²/s at 40℃.

Replacement of Wearing Parts: Scientific Planning to Reduce Costs

Reasonable planning of the replacement cycle of wearing parts can effectively reduce maintenance costs. The feeding belt is generally replaced every 2500 working hours, but in actual use, it can be replaced in advance by observing the degree of wear and aging of the belt. When obvious cracks appear on the belt surface, the depth of the wear groove exceeds 1 mm, or the belt elongation exceeds 5% of the original length, the belt needs to be replaced in time.

The replacement of the heating element needs to be based on its service life and heating effect. Generally, the service life of the heating element is 1-2 years, but if there are problems such as uneven heating and slow heating, it needs to be replaced in advance. When replacing the heating element, make sure that the power and specifications of the new element are consistent with the original element, and ensure that the heating element and the equipment are in good contact during installation to avoid virtual connection.

The replacement cycle of the seal is generally once every six months. When checking the seal, if cracks, hardening or deformation are found on the surface of the seal, it needs to be replaced in time. When replacing the seal, pay attention to the installation direction of the seal and the cleanliness of the sealing surface to ensure a good sealing effect and prevent oil and air leakage in the equipment.