Performance Comparison And Analysis Of Three New Doffer Cars

In recent years, several companies in China have launched. Intelligent doffer Doffing robot and doffing car. Among them, 3 companies were launched earlier, SOBONE-S9 intelligent doffer manufactured by Anhui Tongling song Bao machinery company (hereinafter referred to as SOBONE-S9 doffer), and Wuxi gathering intelligence. Spin The doffer robot produced by Machinery Co., Ltd. (hereinafter referred to as the Wuxi gathering doffing robot) and the HFLS708 type doffing car produced by Jiangyin Huafang new technology research Co., Ltd. (hereinafter referred to as the HFLS708 type doffing car). It can be seen that the performance indexes of the 3 new types of car doffer are basically different, but the doffing time, power, size and weight are slightly different.

Model SOBONE-S9 doffer

The SOBONE-S9 type ring spinning intelligent doffer developed by Tongling song Bao Machinery Co., Ltd. installed the polished rod spindle on one side and the aluminum sleeve spindle on the other side. The tube grabbing device of the machine is perpendicular to the dragline yarn, which is conducive to improving the spinning quality. We know that the existing electric doffer is made up of pre loosening discs and doffing discs to lift and lift the bobbins, and the pre loosening discs and doffer plates which have a certain inclination angle with the horizontal surface are in the process of driving along with the trolley. Apart from the vertical component of yarn pulling, horizontal forces are also produced. Horizontal forces may damage the spindles and damage the surface of the tube and yarn, which is unacceptable for spinning high-quality yarns. In order to solve this problem thoroughly, the machine uses the tube grabbing device to hold the top of the bobbin and perpendicular to the top of the dragon's ribs to pull the yarn, and the spindle bar is not stressed laterally, so that the spindle can not be damaged.

Sobo Intelligent doffer The patented technology has been applied to the automatic doffing and intubation and its structure and control, which has made a significant breakthrough in the technology of doffing cars. There are two key points in the vertical pullout of the trolley. One is that the flying scissors program in the system can track the spindle from the shaft in the stage of extubation, that is, when the spindle servo motor is moving forward at a constant speed, the axis servo motor follows the spindle to make the drawing device move in reverse speed, so that the pullout device is still relatively static with the tube being pulled out; two the other two servo motors are in charge of the combined control of the pullout device to make it arc interpolated according to the prescribed route. The positioning is more accurate and faster, and the operation is more reliable, so as to ensure vertical yarn pulling. As the machine is in the process of extubation and continuous spindle insertion, the doffing speed is greatly improved, and the doffing time of the 480 spindle machine is about 2 minutes (about one time at the same time the doffing).

HFLS708 Doffing car

The doffer car launched by Jiangyin Huafang new technology research Co., Ltd. adopts the fixed installation mode, that is, every time the doffing is finished, the car will not be pushed down from the track, but will be parked at the end of the spinning frame, waiting for the next doffing. The machine adopts artificial auxiliary mobile type, that is, two doffing cars as a group, which can be used for many spinning frames at the same time.

The machine adopts the pre loosening method when the yarn is pulled out, and adopts the simulated manual rotation method to pre release. As the rubbing is carried on the top or bottom of the bobbin, it does not touch the yarn, so the pre loosening will not damage the yarn. In addition, a small external force can be used to separate the bobbin from the spindle bar by means of rubbing. At this time, the eccentric disc will take out the tube in time, that is to achieve doffing. Because the tube yarn has been pre loosed, the doffing requires less external force, and the surface of the eccentric wheel and other parts contacting the spindle and tube yarn is covered with soft rubber. Therefore, the spindle and yarn can not be damaged. The loosening device of the pine cone ring spinning intelligent doffer and the Wuxi gathering doffing robot is not pre loosening. This has a larger yarn pulling force for the spindle, which not only makes the power consumption large, but also damages the machine parts easily.

When the doffing is done, it does not need to reverse the partition board (the electric doffing machine needs to turn over the partition board), which not only simplifies the operation of the doffing, but also reduces the failure of the turnover gauze board and improves the doffing efficiency. The doffing of the machine is not related to the structural design of the eccentric disc. This kind of equipment adopts the gap controllable socket method. The distance between the trolley and each spindle is delivered. The pipeline and the intubation device send out an empty pipe and intubate once. The whole process of pipe conveying and intubation is accurately calculated, the curing ratio is set, and the double circular arc track is set up to ensure the accuracy and stability of the intubation. The machine uses ingots and tube inlets to synchronize, thus reducing operation links and improving doffing efficiency. The extubation, intubation parts and frame are designed with suspension structure. The design of the suspension mechanism not only meets the operational requirements of the extubation pipe, but also reduces the requirement of the car for the ground drop of the spinning workshop. The operation of the whole system is driven by a DC motor and powered by a lithium iron phosphate rechargeable battery. Therefore, it does not need external power, gas and liquid power. The structure is relatively simple and clear. It has the advantages of small workload, short cycle and low cost. Before the doffing, two yarns are placed on the yarn basket. One of the yarn basket is in the position of receiving the bobbin. When it is filled, the transposition device will automatically withdraw the position, and the other basket automatically enters the position of the receiving tube yarn. This can improve the efficiency of the car, reduce the labor intensity of the workers, and also increase the yarn storage quantity of the yarn basket. This is especially important when spinning large yarn.

　　 Wuxi agglomeration Doffing robot

The product of the two generation doffing robot introduced by Wuxi gathering company is quite different in the way and structure of the yarn exits. The former's yarn pulling manipulator should softly touch the surface of the tube while pulling out the yarn, while the latter adopts the pulling out form similar to the collective doffing, and the extubor holds the top of the yarn tube vertically to pull out the yarn, so that the doffing can neither damage the yarn nor damage the ingot.

The extubation is perpendicular to the top of the dragon's ribs. This doffing robot adopts the tube pulling device, which is similar to the collective doffing. The machine can draw 6, 8 or 12 yarns at a time, and the amount of yarn removed is related to the number of spindles between the two rollers and the size of the doffing robot. It must be determined according to the needs of users and the workshop condition of the spinning frame. When the machine pulls the yarn, the doffing car is completely static, which is the same as that of the Japanese HAD-S's car doffer. Because it is in the car static state of the yarn, so it is easier to achieve vertical tubing with the tube grabbing. When the yarn is pulled, it will neither damage the spindle nor damage the yarn.

The fully automatic doffing robot launched by Wuxi gathering company is a fixed installation type, that is, two cars are fixed on a spinning frame to achieve automatic doffing. The disadvantage is that there are many cars equipped with ten thousand spindles, and when they are not working, the small car must occupy part of the spinning wheel head and tail, which may cause inconvenience in operation and maintenance. Later, the company launched the auxiliary mobile doffing device. When the doffing, two doffing workers were manually assisted to move between multiple spinning frames (the same size bobbins), usually 20 spinning frames (less than 516 spindles / units). When spinning frames have lower spinning numbers, such as spinning 11.7tex yarns, 50 spinning frames can be expanded into one group. Because the machine adopts the method of pulling out yarn in the space way, the doffing time is better than that of song Bao. Doffer Longer.