JPH0229768B2 - SEIBOKINIOKERUDORAFUTOROORAKUDOSOCHI - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention enables easy removal of fibers wrapped around the bottom roller, replacement of the bottom apron, and yarn splicing operations in spinning machines such as ring spinning machines and bundled spinning machines. The present invention relates to a draft roller drive device that is configured to operate as a draft roller.

BACKGROUND OF THE INVENTION A group of bottom rollers of a spinning frame is usually connected for each staff, and all the spindles are connected together and are directly driven by a drive mechanism provided in a gear end frame at one end. In this case, the problem is that when replacing parts, especially replacing the apron, the old apron is removed by cutting it, but when wrapping the new apron, one stub of the bottom roller is removed from the roller stand, and the bottom apron is removed. must be carried out while moving the roller in the longitudinal direction, which is an extremely complicated operation.
Furthermore, even in the event that the fibers become wrapped around the bottom roller in the fiber passage section, it takes a great deal of effort to remove them. In other words, it is virtually impossible to move the wrapped fibers in the longitudinal direction of the roller and remove them, so it is necessary to spend time unraveling or cutting them. This removal work is particularly difficult for the back bottom roller. In other words, since the front bottom roller is usually equipped with a suction tube (neutral device), it is difficult for it to get wrapped, and even if it does get wrapped, it is easy to remove it because it can be done from the front side of the machine. On the other hand, removal work using a back bottom roller is extremely difficult because it is far from the working position. Furthermore, if wrapping occurs,
Since the feeding of the fibers is not stopped, that is, the rotation of the back roller is not stopped, unexpected situations such as damage to the roller part tend to occur.

Recently, it is a kind of air spinning machine. BACKGROUND ART A binding spinning device that spins binding yarn using an air false twisting nozzle has been attracting attention. This binding spinning device is capable of high production, more than 10 times that of a ring spinning machine.
Since a high drafting action is therefore required, the above-mentioned problems are likely to occur in the drafting device, and this is a major obstacle to practical use. That is, in the drafting device of this binding spinning device, the apron is considerably worn out due to the high speed rotation, and the fibers are likely to be wrapped around due to the influence of accompanying airflow. In addition, once winding occurs, a large amount of fibers will wind around within a short period of time, potentially causing damage to the parts.

Problems to be Solved by the Invention The above-mentioned problems include the difficulty in replacing the apron, the difficulty in removing the fibers wrapped around the back bottom roller, and the inconvenience caused by the continuous feeding of fibers during wrapping. To address the problem, first of all, it is necessary to make it easy to replace the apron for rollers equipped with an apron, and for the back bottom roller, where it is difficult to remove wrapped fibers, a structure that makes it easy to remove the wrapped fibers should be created. Furthermore, it is necessary to be able to stop the bat crawler independently in order to increase the number of fibers wrapped around each other.

Means for Solving the Problems In order to solve the above problems, in the present invention, at least a back bottom roller and a middle bottom roller provided with an apron are configured in units of two spindles, and one end of each bottom roller is configured as a two-spindle unit. The left and right rollers are driven and connected independently via an electromagnetic clutch from a back bottom roller drive shaft that is common to all spindles, and the middle bottom roller is connected to a middle bottom roller that is common to all spindles. The tom roller drive shaft is connected to drive the left and right rollers.

Function In this invention, at least the back bottom roller and the middle bottom roller are each driven in units of two spindles from a common drive shaft for all spindles, and in particular, the left and right rollers of the back bottom roller are driven via electromagnetic clutches. be worked. In response to an abnormality in the weight, the electromagnetic clutch disengages and the feeding of the fiber by the weight is stopped.

Embodiment An embodiment of a three-wire draft device employed for bundle spinning shown in the drawings will be described. Bottom roller drive shafts 1, 2, and 3 whose rotation is transmitted from a drive source at the end of the machine (gear end frame) extend along the back bottom roller 4, middle bottom roller 5, and front bottom roller 6, respectively, over the entire spindle. It extends. Each bottom roller 4, 5, 6 is composed of two spindles, and a driven mechanism is provided between the two spindles in order to transmit rotation to the bottom roller of each unit. The attached drive mechanism joins.

First, regarding the back bottom roller, the gear 7 of the drive shaft 1 meshes with the gear 9 of the intermediate shaft 8, and the gears 10, 10 at both ends of the shaft 8 are connected to the back bottom roller shaft 1.
It meshes with gears 12, 12 above 1, 11. In this case, the left and right bottom rollers 4, 4 have separate shafts 11, 11, and are supported by two bearings 13, 14, respectively.

Next, regarding the middle bottom roller, the gear 15 of the drive shaft 2 meshes with the gear 17 on the bottom roller shaft 16, and drives the middle bottom rollers 5, 5 under the support of the bearing 18. .

The rotation transmission structure of the front bottom roller 6 is similar to that of the middle bottom roller 5 described above. 22 is a lower cover, and 23 is an upper cover.

Based on this configuration, the rotation of the bottom roller drive shafts 1, 2, and 3 is transmitted from the drive mechanism to the driven mechanism, and gears 7, 15, etc. exist as the drive mechanism, and gears 9, 12, 17 etc. correspond to the driven mechanism.

This embodiment is an example of application to an air false-twisting binding spinning device, in which the fiber bundle supplied from the guide 19 is wrapped around a back bottom roller 4, a middle bottom roller 5, an apron 20, and a front bottom roller. 6 and into the air false twisting nozzle 21. Of course, a top roller (not shown) is pressed against each of the bottom rollers 4, 5, and 6, and performs a drafting action while holding the fiber bundle between the upper and lower rollers. Since a drive mechanism is arranged between every two spindles, it is possible to stop and start each spindle, and as shown in the example shown in the figure, in order to cut off the feeding of fibers when the yarn breaks, the intermediate shaft related to the back bottom roller 4 is 8
Two electromagnetic clutches MC and MC are interposed at the top.

If an abnormality occurs in the weight such as thread breakage during operation, the electromagnetic clutch MC at that weight is disengaged in response to the signal and the feeding of the fiber is stopped, so even if the fiber is wrapped around the roller,
The amount of winding is small. As for the front bottom roller 6, since the air false twisting nozzle 21 acts as a pneumatic device, it is difficult for the fibers to get wrapped around the front bottom roller 6, but even if it does get wrapped around it, it is only a small amount and it is located at a position where it can face the operator. Since the removal work is easy to perform due to these factors, it is not necessary that the front bottom roller 6 has one end open as shown in the illustrated example. However, since the back bottom roller 4 is located at a position where it is difficult to remove the wrapped fibers, since one end is open as shown in the illustrated example, the wrapped fibers can be easily removed by shifting them in the axial direction.

Although it is difficult for the fibers to wrap around the middle bottom roller 5, since one end is open, the apron can be replaced extremely easily.

Effects of the Invention According to the present invention, since the bottom roller is divided into every two spindles, one end of the bottom roller becomes open, and as a result, when replacing the apron, the bottom roller with the apron wound thereon can be moved in the longitudinal direction of the roller. By performing this work, the apron can be easily removed from the end of the roller, and a new apron can also be easily wrapped. In addition, in the event of an abnormality such as yarn breakage, the feeding of fibers can be stopped for each spindle, reducing the possibility of fibers wrapping around the rollers, and even if they do wrap around the bottom roller, it would be difficult to remove them, which would normally be difficult to do. The bottom roller can also be removed from the roller end in the same manner. Since the electromagnetic clutch is interposed in the back bottom roller, the yarn splicing operation can be performed independently for each spindle. Furthermore, it is advantageous to remove fluff accumulated on the roller portion because the removal operation can be performed from the end of the roller.

[Brief explanation of drawings]

The figure is a perspective view showing an embodiment of the device of the present invention. 1... Back bottom roller drive shaft, 2... Middle bottom roller drive shaft, 4... Back bottom roller, 5... Middle bottom roller, 20... Apron, MC... Electromagnetic clutch.

Claims (1)

[Claims] 1 At least a back bottom roller and a middle bottom roller with an apron are configured in units of two spindles, one end of each bottom roller is open, and the back bottom roller is driven by a back bottom roller common to all spindles. A draft roller in a spinning machine, in which the left and right rollers are independently driven and connected from a shaft via an electromagnetic clutch, and the middle bottom roller is driven and connected to the left and right rollers from a middle bottom roller drive shaft that is common to all spindles. Drive device.