The machine head is the heart of the mechanical operation, and the needle parts such as the needle selector, the triangle, the electromagnet, and the eye move the needle. The core of the machine head is the triangular bottom plate. When the triangle plate is used properly, the lifting speed and lifting frequency of the needle raising triangle can be increased, the damage rate of the knitting needle can be reduced, and the adjustable range of the fabric density can be widened to improve the weaving quality of the fabric. . At present, domestic triangular production enterprises are limited by materials, heat treatment, cryogenic treatment, manufacturing, etc. It is difficult to compete with imported equipment. If the toughness of the triangular bottom plate is not enough or the process is not up to standard, it will cause problems such as striker and fabric deformation, which will seriously cause machinery. Wear, deformation, blackening. However, it is gratifying that the national enterprises are still fighting for strength. For example, the quality of the triangular plates in Shantou Lianxing, Taiwan, Zhejiang and other places is not bad. Their materials and processes are basically up to standard, but due to the difficulty of materials and process treatment, Lianxing and Taiwan The production capacity can not meet the market demand, the monthly output is not enough, and the relative price is relatively high, so the supply is relatively short. For the selection of the triangular plate, attention should be paid to its material parameters and precision parameters to see the smoothness, tightness and flatness of the triangular plate. Tightness refers to the gap between the triangle block and the grid. The smaller the gap, the better (tight) the better. The flatness can be seen whether the grid is distorted or not, which can be observed by the naked eye. In general, the products that the industry praises will not be too bad.
The second measure: look at the system
The computer system should be the brain of the whole machine, which can be imagined. This metaphor shows the importance of the computer. If the computer instability is definitely the sin that affects the production and quality of sweaters, all the movements, patterns, speeds, and densities must be controlled by computers. The computer selection can not be sloppy. I have personally seen some computers doing the machine. The head and the shaker flew, the yarn feeder was messed up, the needle was moved a few times, the code was loose, the crash, and the mess was running, it was terrible! Imported machines have always been recognized as stable, but now domestically produced machines are not bad. It is said that domestically produced systems started in 2001. Before 2001, it was basically a situation of “big roads through the sky, importing and escapingâ€, and the actual level of foreign mechanical and electrical integration. It is indeed better than the people of the country. However, the progress of domestically produced computers is not slow. The Chinese people have fully exerted the high-level wisdom of "bringing the doctrine". At first, they basically relied on imitation. Later, they began to innovate independently. In less than ten years, the technical level was approached step by step. It’s sweating. It’s said that the blue is better than the blue. It should be said that the domestic computer has a qualitative change compared with eight years ago. At present, the domestically-made machine can be regarded as the Hengqiang computer in Hangzhou. There are more than 80% of users in China, and the big manufacturers are basically using it. The waste rate and the waste rate are relatively low, and it is still stable. The normal speed can be opened to 0.9, the imported machine is 1.0, and other domestic brands are as fast as 0.8. The operation of Hengqiang system is relatively simple, the maintenance is relatively easy, and the employment is better. This aspect is slightly better than the imported machine. It seems that the national enterprise is still very competitive. However, the price of Hengqiang computer is higher than that of other domestic systems. It is said that the price of the whole machine is the same regardless of the computer installed in the third or fourth thousand. There are also a small number of machinery factories posted "dog skin plaster". I heard that there are pirated Hengqiang systems on the market, and they are sold in the market after the change of face. The low-quality domestic computers are going to the market. This may be the source of misunderstanding of some domestic machines. Look at the computer mainly depends on how much speed can be opened, whether the operation is simple, whether the flower type action (jacquard, intarsia, and needle turning) is comprehensive and the software error rate is much. Efficiency is money, speed is fast, there are fewer mistakes, and the function is full. This is money.
The third measure: look at the needle board
The needle plate should be regarded as the torso of the flat knitting machine. It is also limited by the materials, heat treatment, process, manufacturing and other techniques. If the needle plate is not used properly, the fabric will be rough, the plate will be worn, the needle will be hit, and even the needle plate will be black and fester. Fabrics that are not well woven will go away. At present, the domestic reputation is better in the needle board of Wenzhou Baixin and Changshu. There are usually two kinds of needle plates in China: one is a slotted needle plate, and the other is a horn pin plate. At present, many manufacturers use a slotted needle plate to reduce the cost. When you purchase, look at the needle plate. When you look at the smoothness of the needle groove, look at the flatness of the whole plate. This is generally touched by hand and observed with the naked eye. The needle plate of the good needle plate is smooth and has no meat. When viewed with the naked eye on the horizontal line, the whole plate is flat and does not deform.
The fourth measure: look at the knitting needle
The knitting needle is the finger of the flat knitting machine. The warp and weft knitting of the yarn depends on it. In addition to the material toughness of the knitting needle, the design and precision of the needle hook of the needle are also very different. Domestic needles, useful for imported needles, the representative of the import is: Groz, Aka, Hite, these needles are still "tested", the waste needle rate is very low, the domestic needle needle rate is relatively higher . Groz, Aka, Hite, etc. may be the best needle brand. In the circular machine industry, Groz's knitting needle ratio is still relatively large, so its quality can be seen. These "Shanghai style" needle prices Not low, an average of 4-6 yuan per piece, poor selection of knitting needles will lead to fabric smearing, waste, missing needles, broken needles, etc., so don't underestimate these small knitting needles, things are small, choose not The trouble is big. The knitting needle is also a consumable in a certain sense. In the knitting process, it is inevitable to rate a few needles, so reducing the needle rate should also be considered.
The fifth measure: look at the service
Mechatronics equipment will inevitably have problems, Stoll should be one of the best equipment in the industry, but there will also be common faults such as crashes, frequent failure of the pulling system, and damage to the scissors, so no matter what machine is not " "The golden bell", there must be a bad time. Our industry is most afraid of the machine stopping, and the output will be damaged in one hour. Especially in the peak season, the profit is basically calculated according to time. The service time is too long to lose the real money. Therefore, after-sales service is still very important in the current industry environment. Look at the service, mainly when looking at the equipment manufacturer's staff configuration when buying the machine, especially to observe the dealer's staffing configuration, most of the flat knitting machine manufacturers in Jiangsu and Zhejiang, the resident sales department (some are business) is the first-line service The organization, so be sure to understand the local dealer structure, see if there is a version of the master, see how many mechanics, see how many service vehicles. At the time of the inspection, attention should also be paid to the management of the company. There are a lot of mechanics who are recruited by the dealers. After one or two months of training, they will be pulled out for sale. The horses will be tempered by the hands and the money will be worn away. In the end, they will not be solved. When purchasing the machine, it is best to ask the dealer to give a detailed introduction to the background of each mechanic, the number of years of work, and the proficiency of the technology.
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