It is well known that the main carding carding machine area is between the cloth and the cylinder cover needle cloth, both is the key to realize high quality components. Throughout our country flat clothing equipment and products structure, production process can be divided into three stages.

The first phase of 80 s, the main process equipment is completely localization of Germany imported processing equipment, mainly producing all kinds of twill, satin weave, are dense cover plate products, etc.

The second stage for the mid - 80 to 80, is the introduction of Switzerland graf production process equipment, mainly produces horizontal light, vertical light, such as horizontal superdense cover plate products.

The third stage is from 2000 to now, it is the introduction of Italy, darcy production process equipment, mainly produces horizontal dense type, light type and dense type plate products gradually.

Each phase of the development of the clothing industry and cotton spinning industry is a promotion, is the beginning of international standard, to make a certain contribution to the development of China's textile industry.

In different stages of the process is essentially the same, the main difference between the main different of the structure of special equipment, performance and the different features to produce a product. Here in every stage of the process equipment as a characteristic analysis.

1. The first phase of the introduction:

A. flocking needle machine: by Germany, the introduction of improved has completely localization, can plant arrangement such as twill, satin weave all horizontal dense type, also is the present domestic ordinary cover plate of the main production equipment. Its all for mechanical transmission structure, part mechanical complete ascension. Molding is transmission driven by six square shaft or triangular shaft CAM to complete. The main products are 709, 715, 702, twill and satin weave MCC36, etc.

B. needle grinding machine: cloth grinding flat needle machines made in China at that time only two grinding head, respectively on two guide around mobile, can be flat grinding and side grinding at the same time. Flat grinding and grinding pressure on the rail Shared a grinding head, side next guide rail grinding with a grinding head, the reciprocating velocity by the chain wheel, chain transmission, heavy structure, accuracy is not high, guide rail and the large diameter cylinder deformation and radial runout is big, poor roundness. Needle grinding machine is the key process equipment. Such as planting needle machine error can damage a few root, and grinding needle machine error can cause the entire scrap.

C. hardening machine: there are two main types of domestic equipment, is a kind of high frequency hardening, is a kind of flame quenching. The former adopts water cooling, experience shows its unstable, quenching is not stable, tempering, easily burnt cloth, has been phased out. The latter using propane + oxygen, with liquid cooling water (or oil).

2. The introduction of the second stage:

A. flocking needle machine: in the mid - 80 the introduction of Switzerland graff flocking needle machine, its mechanical structure can be rooted out in the same light and transverse superdense plate products, it's a change in varieties of models is still done through the design of the tooling parts, such as car tide cone, the rising proportion of supporting roller, roller part such as ascension by a pair of worm worm gear mechanism. Molding is transmission driven by 12 spline shaft CAM completed, is composed of double plate, plate on the wheel drive transmission. Its main products are ST series, RT series such as satin, twill weave. Mid - 90 - Swiss graves to launch new products abroad, namely light type PT series cover plate, the longitudinal 1/3 is arc arrangement, two-thirds are longitudinal isometric arrangement, it still is up to now.

B. needle grinding machine: in the early 90 s the introduction of graff grinding needle machine, its use is five grinding head grinding needle, that is, a grinding head, a flat grinding head, grinding head of three side, it consists of a small diameter cylinder and a large diameter cylinder hold each other tight base cloth for grinding needle, mainly depends on the surface of the roller rotation and friction driven in clothing clothing to wear. The big roller diameter of about 2 m, roller with stripping roller above to remove the burr, increase the degree of finish, the screw by manual transmission, braking power outage protection.