Nail box production process and its quality control (2)

Differences in the length of the flap after the carton is set

When the cardboard is not positioned at the baffle, the switch is pressed and nailed prematurely; the wear on the upper and lower sides of the toothed belts is too large and the belt clearances on the two sides are too large and inconsistent; the depth of the crates of the carton is not enough, and the carton is folded before the nails and clearly The skewed situation will cause the cartons to be set up, and the lengths of the two sides of the cart cover will be inaccurate. In this regard, the exact cause of the fault must be identified in order to take appropriate measures and correct them.

Inaccurate cardboard pitch

When the left and right side baffles are too tight, so that the resistance is large and the paper feeding is not smooth; the toothed belts obviously wear out, make their heights inconsistent, and the gauge pressure is insufficient, it will easily affect the normal transportation of the paperboard. In this regard, the reasons should be ascertained in order to take appropriate measures to handle and eliminate.

The proper use, maintenance and maintenance of nail box machine

Before using the newly purchased nail box machine, be sure to read the equipment manual carefully to understand the basic structure, performance, and usage of the equipment, and to avoid operational blindness. When nailing the box, adjust the position of the main and left and right baffles and the position of the upper and lower nail heads according to the flaps of the carton. When adjusting, it should be noted that the left and right baffles cannot be clamped too tightly, but the cardboard can be easily inserted and withdrawn. When the mechanical adjustment is completed, you can touch the screen to set the computer: carton height = the original carton height -40mm, the number of carton nails, the carton set distance, whether the set of reinforced nails, single chip, double chip selection and a series of settings, and then Can be nailed box. While paying attention to the correct use of the staple box machine, it is necessary to pay attention to the correct maintenance and maintenance of the machine. This is a key link for improving the production efficiency and the quality of the nail box. It must not be ignored. Therefore, it is required that the head be set and the punch be lubricated once a day; on the fixed shaft of the fixed head and the left and right baffles, the oil should be lubricated and cleaned at any time; the upper and lower nail head drive shafts, the spline shaft, and the drive screw Also need to maintain a good lubrication; down the first easy to flat part of the electroplating crumbs fall off the flattened wire gathered in the punch, usually pay attention to cleaning and cleaning often; after every month to open the head for cleaning and refueling The paper feed belts are equipped with 3 gears on the left and right side plates of the spline shaft, should be filled with butter once a month; the clutch and brake should prevent oil and water from infiltrating; the servo motor should be kept clean to avoid dust accumulation; always to the servo motor The heat-dissipating dust filter of the driver is cleaned; the electrical control box must be kept clean to prevent dust from collecting and causing a short-circuit fault; the inner and outer feed reel shafts should be lubricated with butter to ensure reliable flexibility; and gears and chain requirements for power transmission Lubricate once a month with grease to prevent wear of mechanical parts.

Nail box process technology control essentials

The choice of nail saw

Nail saws should be reasonably selected according to the performance and characteristics of the carton in order to better meet the quality requirements. Nail box saws are divided into three basic forms: oblique nails, straight nails and horizontal nails. The structures include single oblique nails, double oblique nails and reinforced nails; single straight nails, double straight nails and reinforced nails; single horizontal nails and double horizontal nails. And strengthen nails. The form of the nail sawing is usually determined by the structure of the machine. Therefore, the nail box machine must be selected according to the process requirements of the nail box. Generally, the double oblique nails can improve the binding strength of the corrugated box with its arrangement structure, and are generally used. The oblique nails are arranged obliquely in a 45o-like structure. The nail saws of the straight nails are arranged vertically and the nail saws of the horizontal nails are arranged horizontally. A single nail refers to a number of single nail saws at the lap joints of the carton. Double nails are used to set two sets of two sided nail saws. Reinforcement nails are a pair of single nails between two sets of double nails. .

In general, a single-layer, 3-layered, small carton requires only a few staples to be sufficient to ensure the packaging strength of the carton. The 5th and 7th-floor medium and large-sized cartons can be used to determine the number of double-nails, or double-nail nails, according to the characteristics of the contents, as a starting point for saving both material and nail box strength. Scientifically and reasonably determining the structure of the box nail is the basic principle of the technology control of the nail box.

Box nail quality control

The arrangement and control of the box nails are not only related to the appearance quality of the carton products, but also directly affect the packaging performance of the carton. Therefore, the box nails should be firm, and the nails should be neat and beautiful. The nail saws cannot be stacked nails, stud nails, missing nails or nails. Defects such as obvious deflection of foot shape. Determining the nail pitch of the carton nail saw is an important technical control link in production. The nail box nail box with positioning mechanism is the reliable guarantee for ensuring the nail pitch accurately. According to the relevant standards of corrugated boxes, nail distances must be arranged neatly and uniformly, and the distance between double nails should not exceed 75mm. The distance between single nails should not exceed 55mm, and the distance between head and tail nails should be 13±. For 7mm, the saw must be fully nailed to the lap tongue. The national standard is a guiding standard and is the guiding reference for industrial production reference. However, the customer and the carton factory can also determine the appropriate nail saw according to the characteristics of the carton product to meet the requirements of the product and the province As a guideline, both parties can accept it.

Flat wire quality requirements and technical control

The surface coating of flat yarns is generally made of copper plating and zinc plating. From the perspective of quality and technology, flat yarns are not allowed to have quality defects such as cracks, rust, peeling, bending or uneven thickness. Some of the flat wires are poor in moisture resistance and oxidation resistance, and they are found out from the warehouse and found that rust has not yet been used. If the storage environment is wet, rusting is more likely to occur. Therefore, when purchasing, pay attention to the flat wire with good plating, good rigidity, and elasticity. The uniformity of the thickness and width can be checked with a vernier caliper.

The correct choice of flat yarn

The quality of the flat yarn depends mainly on the raw material properties and the production process. If the flat wire material is not qualified, the quality of the coating will fall off, the feed line will not be smooth, the broken nails, and the nail saw will not be well formed. A good quality flat yarn should have uniform plating, bright, non-bending wire material, soft and moderate steel and elasticity. According to the machine structure of the nail box machine, the flat yarn is determined to use the specifications of the flat yarn, and it is necessary to pay attention to the selection of high quality flat yarn. This is the basis for improving the quality of the nail box and improving the service life of the equipment. The annealing degree of the flat iron wire is about 400 degrees and the time is only 4 hours, while the annealing temperature of the copper plating flat wire is about 900 degrees, the time is 14 hours, and its hardness is about 2 times smaller than the former. The wear of the head parts is better reduced. Therefore, from the perspective of improving the life of the equipment, the selection of copper-plated flat wires is of certain significance.

Nail box production should pay attention to matters

When the foot nail box is used, the hands and feet must be well-matched and carefully operated. If there is no stoppage, do not put your hand into the machine to order the head or other rotating parts to avoid inadvertently injuring your hands. After replacing the new flat yarn, it is necessary to pay attention to lock the flat yarn tray to prevent it from being damaged or hurt. The machine must be properly used, maintained, and lubricated in accordance with the instructions. It must not use inferior flat yarns for the sake of cheapness, but must choose flat yarns that conform to the specifications of the machine.

The correct storage of flat yarn

The wire of the flat wire is an iron wire. Although the surface has a certain anti-oxidation and anti-rust plating, it can easily be rusted if it is not well-kept. Therefore, the flat yarn that has not been used up after opening should be sealed and stored in a moisture-proof manner. Storehouses for flats must have basic requirements for ventilation, drying, non-corrosive and oxidizing substances, and they must not be placed directly on the floor, but should be placed on wooden pallets with a foot height greater than 15cm. To prevent moisture from rusting.

The production efficiency and quality control of the nail box involve many aspects such as equipment performance, technical operation, and the selection and storage of materials. Therefore, as long as the nail box equipment is reasonably selected according to the characteristics of the production, the nail box technology and operation technology are seriously taken into consideration. Off, the use of high-quality flat wire nail boxes, and pay attention to the scientific custody of the flat wire, not only can make the best use of the capacity of the nail box equipment, and the quality of the nail box can also be better guaranteed.