JPH043011Y2 - - Google Patents

Description

[Detailed Description of the Invention] Purpose of the Invention Industrial Application Field This invention relates to a sliver feeding and stopping device for a roller draft device.

Conventional technology In general, spinning machines have two different surface speeds.
A so-called roller draft type drafting device is widely used, in which two or more sets of rollers are installed and the fiber bundle is successively thinned by utilizing the difference in surface speed between the rollers.
The roving frame adopts a method in which the entire machine is stopped when the thread breaks, thereby stopping the supply of sliver to the draft device and performing the splicing operation, which reduces the operating efficiency of the machine. be. On the other hand, ring spinning machines use a method in which the sliver is continuously fed to the draft device without stopping even when the thread breaks, and the new machine suction removes the supplied sliver by suction until the operator completes the splicing. Therefore, there is a disadvantage that there is a large loss of raw materials.

If the above-mentioned method of constantly supplying sliver even during yarn breakage and suctioning it away with a new suction is applied to high-speed spinning machines such as binding spinning machines, which have made remarkable progress in recent years, the loss of raw materials will be large and it will be difficult to do so. This is not only economical, but also prevents the fiber bundles from wrapping around the rotating part if the pneumatic suction fails.
There is a problem that it may lead to accidents such as damage.

In order to solve the above-mentioned problem, as shown in FIG. A device has been proposed in which the back bottom roller 48 is driven through the back bottom roller 48. In this device, when the yarn breaks, the clutch 44 is released to stop the back bottom roller 8, the sliver is cut between the back roller and the next downstream roller, and the sliver supply is stopped.

However, when the back bottom rollers 48 are made independent for each spindle in a roller draft device, 1
Since a driving force transmitting section is required for each spindle, a large amount of fluff generated during operation of the spinning machine adheres to the gears 42, 43, etc. of the driving force transmitting section, causing a malfunction. Furthermore, it is necessary to apply lubricating oil to the gears 42, 43, etc., and as the gears 42, 43 rotate, the lubricating oil scatters around and contaminates various parts of the spinning machine, threads, etc. In addition, there is also the disadvantage that lubricating oil promotes the adhesion of fluff.

Problems that the invention aims to solve This invention solves the problem that fluff adheres to the gears of the driving force transmission section in the conventional device, causing malfunctions, and that lubricating oil scatters around the spinning machine, causing damage to various parts of the spinning machine. This solves the problem of contaminating threads, etc.

Means for solving the problem In this invention, one back bottom roller is used.
Each spindle is arranged so as to be drivable, and the back bottom roller and the back bottom roller drive shaft are drivingly connected to each spindle via an electromagnetic clutch, and the driving force between the back bottom roller and the back bottom roller drive shaft is The transmission part is housed in a case in units of two spindles.

Effect: In the device of this invention, since the driving force transmitting part is protected by the case, the fluff generated in the draft device does not adhere to the driving force transmitting part. In addition, lubricating oil that scatters from the driving force transmission section does not come out of the case. Furthermore, since the driving force transmission section is housed in a case divided into two weight units, when replacing or maintaining the electromagnetic clutch, two weights including the weights that require maintenance can be stored.
The driving force transmission section consisting only of weights can be opened and removed.

Examples 1 to 6 below are examples that embody this idea.
This will be explained according to the diagram. As shown in FIGS. 2 and 3, a roller stand 2 is fastened to the roller beam 1 for each staff by bolts 3 so as to be perpendicular to the longitudinal direction of the machine. A front bottom roller 4 is rotatably supported at the front upper part of the roller stand 2 via a bearing 4a. A middle bottom roller 7 is rotatably supported on a slide member 6 which is fastened to the rear roller stand 2 of the front bottom roller 4 with a bolt 5 via a bearing 7a. Also, roller stand 2
An arm 11 that supports a front top roller 8, a middle top roller 9, and a back top roller 10 is rotatably supported at its base end at the rear upper end of the arm 11.

A support bracket 13 for supporting the support pipe 12 along the longitudinal direction of the machine is fixedly supported by bolts 14 on the rear lower surface of the roller stand 2. A back bottom roller drive shaft 15 common to all the spindles is loosely inserted into the support pipe 12 and is rotatably supported via a bearing 16. The back bottom roller drive shafts 15 are connected via couplings 17 every few spindles, and
It is designed to be rotationally driven from the end on the gear end side via a gear train 18.

A back bottom roller 1 is attached to the support pipe 12.
A case 20 serving as a support member for rotatably supporting the roller beam 1 as a set of two spindles is rotatably supported at its base end, and is fastened onto the roller beam 1 via a bolt 21 as shown in FIG. It is fixedly supported via a bolt 23 by a bracket 22 that is attached and fixed. As shown in FIG. 1, the back bottom roller shafts 19a are rotatably supported one spindle at a time through bearings 24 at the ends of the case 20, and each back bottom roller shaft 19a has a driven gear 25 that rotates integrally therewith. Possibly fixed. Inside the case 20, the back bottom roller drive shaft 1 is installed in the center of the back roller, which is composed of a set of two spindles.
A drive gear 27 meshing with a gear 26 formed in 5
is rotatably supported by a shaft 28. On both sides of the driving gear 27, a transmission gear 29 that meshes with the driven gear 25 is supported on the shaft 28 so as to be rotatable with respect to the shaft 28 and movable in the axial direction. A large number of triangular teeth 27a forming a dog clutch are formed on both sides of the drive gear 27. Also, triangular teeth 29a that mesh with the triangular teeth 27a are formed on one side of the transmission gear 29 that faces the drive gear 27, and the case 20 is formed on the other side.
A triangular tooth 29b is formed as an engaging portion that engages with the triangular tooth 30a of the brake member 30 fixed to the brake member 30. The shaft 28 has a triangular tooth 29b between the drive gear 27 and the transmission gear 29.
A coil spring 31 is wound around the brake member 30 so that the brake member 30 engages with the triangular teeth 30a of the brake member 30.
Further, the transmission gear 2 is located near both ends of the shaft 28.
The operating member (armature) 3 is in contact with 9.
2 is slidably inserted on the shaft 28, and the actuating member 32 is connected to the drive gear 27 on the outer periphery of the shaft 28 when energized.
An electromagnet 33 is provided to attract and hold it to the side.
The electromagnet 33 is deenergized and demagnetized when the yarn breakage detector detects yarn breakage. Incidentally, the case 20 is provided with a trumpet 34 for guiding the sliver to the back bottom roller 19.
is installed.

Next, the operation of the apparatus configured as described above will be explained. During normal spinning, the coil of the electromagnet 33 is energized to keep the electromagnet 33 in an excited state, and the attraction force of the electromagnet 33 causes the operating member 32 to move to the drive gear 27.
sucked to the side. As a result, the transmission gear 29 is pushed toward the drive gear 27 against the spring force of the coil spring 31, and the triangular teeth 27a and 29a are held in the engaged state, that is, the clutch is connected, and the drive gear 27 Since the back bottom roller drive shaft 15 is rotated integrally with the gears 26 and
is transmitted to the back bottom roller shaft 19a via the driving gear 27, transmission gear 29 and driven gear 25,
The back bottom roller 19 is driven to rotate and the sliver is continuously fed.

When the thread breakage detector detects thread breakage, the detection signal de-energizes the electromagnet 33.
3 disappears, and the urging force of the actuating member 32 disappears, so the transmission gear 29 moves along the shaft 28 toward the brake member 30 together with the actuating member 32 by the spring force of the coil spring 31. The triangular teeth 29b mesh with the triangular teeth 30a of the brake member 30, and the transmission gear 29 is reliably stopped, the back bottom roller 19 is also stopped, and the supply of sliver is immediately stopped.

In the device of this embodiment, a meshing clutch with triangular teeth is used as the clutch mechanism, and the brake mechanism is also structured so that the triangular teeth mesh with each other, so even if gear grease gets on the clutch or brake mechanism, Transmission or disconnection of rotational force is carried out without any hindrance. Furthermore, since the clutch mechanism, brake mechanism, gears, etc. as driving force transmitting members are housed in the case 20, it is possible to prevent fluff from accumulating on the clutch mechanism or gears and interfering with the transmission of driving force. be done.

In addition, lubricating oil splashed from gears, etc. in case 2
Since it does not scatter outside, it does not contaminate the parts of the spinning machine or the spun yarn. Furthermore, since the driving force transmission section is housed in a case 20 divided into two weight units, when replacing or maintaining the electromagnetic clutch, two weights including the weights that need to be maintained can be stored.
The driving force transmission section consisting only of weights can be opened and removed.

Note that this invention is not limited to the above embodiments, and for example, a plate spring may be used instead of the coil spring 31, the drive gear 27 may be provided for each spindle instead of common to the two spindles, or the brake member may be The shape, structure, etc. of each part may be arbitrarily changed without departing from the spirit of this invention, such as providing a brake shoe instead of the triangular tooth 30 and providing a friction member on the transmission gear 29 side instead of the triangular tooth 29b. is also possible.

Effects of the Invention As detailed above, according to this invention, since the back bottom rollers are made independent for each spindle, the supply of sliver can be stopped for each spindle when the yarn breaks.
In addition, since the driving force transmission part between the back bottom roller and the back bottom roller drive shaft is housed inside the case, the air lint generated during operation will not enter the driving force transmission part, resulting in damage to the draft device. The incidence of this can be kept low. Furthermore, since it is possible to prevent lubricating oil from scattering from the driving force transmission section, it is possible to prevent contamination of various parts of the spinning machine and the spun yarn. Furthermore, since the driving force transmission section is housed in a case divided into two spindles, when replacing or maintaining the electromagnetic clutch, it is possible to open and remove only the two spindles, including the weight that requires maintenance. I can do it.

[Brief explanation of the drawing]

1 to 4 show an embodiment embodying this invention, in which FIG. 1 is a sectional view of the main part, FIG. 2 is a partially omitted plan view, and FIG. A-line enlarged sectional view, FIG. 4 is a BB-line enlarged sectional view of FIG. 2,
FIG. 5 is a schematic plan view showing a conventional device. Back bottom roller drive shaft...15, Back bottom roller...19, Back bottom roller shaft...
19a, case...20, driven gear...25, gear...26, drive gear...27, triangular teeth as clutch mechanism...27a, 29a, transmission gear...
29, Brake member...30, Triangular tooth as an engaging part...29b, Coil spring...31, Electromagnet...
…33.

Claims (1)

[Scope of utility model registration request] A back bottom roller is arranged to be drivable for each spindle, and the back bottom roller and a back bottom roller drive shaft common to all spindles are drivingly connected to each spindle via an electromagnetic clutch, and the back bottom roller and back bottom roller are A sliver supply and stop device for a roller draft device, characterized in that a drive force transmission section between the bottom roller drive shaft and the bottom roller drive shaft is housed in a case in units of two spindles.