JPH0630173U - Binding spinning machine - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to prevent the decrease of the operating rate by not detecting the snare which is eliminated during the winding operation. [Structure] In a binding spinning machine 1 in which a draft device 2, a yarn forming device 3, a take-up device 4, a suction type yarn accumulating device 5, a tension device 7, a yarn detector 8 and a winding device 6 are arranged in this order, The distance between the device 7 and the yarn detector 8 is at least 20 mm.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a binding spinning machine for producing a binding spun yarn from a fiber bundle such as staple fibers.

[0002]

[Prior art]

 Generally, when manufacturing a bundled spun yarn from a fiber bundle such as staple fiber, a draft device, a yarn forming device, a take-up device, a suction type yarn accumulating device, a tension device, a yarn detector, and a winding device are arranged in this order. The spinning machine having the above configuration is used, and the tension device and the yarn detector are installed in a state of being extremely close to each other.

The yarn detector is adapted to detect a yarn thickness, and when a yarn having a cross-sectional area having a thickness at least three times as large as that of a spinning yarn passes, it outputs a snare signal. ing.

When the tension device and the yarn detector are installed in close proximity to each other as described above, the binding fibers are concentratedly generated, or the short thin yarn portions are generated, so that the binding twisting is performed. If the torque balance is lost, or the peripheral speed of the take-up device is 5% or more slower than the peripheral speed of the front roller of the draft device, and the yarn with a high overfeed rate is spun, the spun yarn will have a high torque. In many cases, it becomes snare in the suction type yarn storage device.

However, comparing the number of snares actually contained in the wound package with the number of snares detected by the yarn detector, it was found that the number of snares detected was extremely large. It was

That is, when the tension device and the yarn detector as described above are installed in a state of being extremely close to each other, the snare that naturally disappears during the winding operation is also detected.

Even when such a snare that disappears is detected, the spinning is temporarily stopped, the yarn wound on the package is pulled out, a part of the yarn is removed, and the spinning is restarted to splice the yarn. Since the winding operation is performed by performing the operation, many unnecessary spinning stop operations are performed, and the operating rate is reduced more than necessary.

[0008]

[Problems to be solved by the device]

 An object of the present invention is to detect the snarl that naturally disappears during the winding operation to perform the spinning stop, the snare removal, and the spinning restart operation, so that the operation rate is unnecessarily reduced.

[0009]

[Means for Solving the Problems]

 In order to solve the problem, the binding spinning machine of the present invention is constructed such that the distance dimension (H) between the tension device and the yarn detector is at least 20 mm or more as described in claim 1.

In order to solve the problem more reliably, the distance (H) between the tension device and the yarn detector is set to 50 mm or more.

[0011]

【Example】

 FIG. 1 is a front view showing an embodiment of the binding spinning machine of the present invention, and FIG. 2 is a schematic view showing a snare elimination state in the yarn detecting section in FIG. 1, in which the binding spinning machine 1 is On the machine stand (not shown), the draft device 2 including the front roller 2-1, the middle roller 2-2, the back roller 2-3, the fiber separation tube 3-1 and the yarn forming nozzle 3-2 are provided. A yarn forming device 3 in which a negative pressure duct 3-3 is connected to the fiber separating pipe 3-1 and a compressed air supply pipe 3-4 having an electromagnetic switching valve is connected to the yarn forming nozzle 3-2; A take-up device 4 including a driving roller 4-1 and a nip roller 4-2, a suction pipe 5-1 having a suction port positioned orthogonal to the yarn path and the other end connected to a negative pressure duct 5-2, A suction type yarn accumulating device 5 comprising a yarn detector 5-3 attached to the suction pipe 5-1 for detecting the presence or absence of a yarn, and a clade for rotatably mounting a bobbin. 6-1 and a winding device 6 including a driving drum 6-2 for rotating the bobbin and traversing the yarn are attached in that order, and a tension device 7 is provided at the outlet of the suction port of the suction type yarn storage device 5. A yarn detector 8 for detecting yarn breakage and snare is installed so as to have a space dimension (H).

The interval dimension (H) needs to be at least 20 mm or more, preferably 50 mm or more, because the generated snare disappears during the winding operation.

A clutch mechanism is incorporated in the above-mentioned drive drum 6-2, which operates based on a signal from the control device 9 to rotate and stop the drive drum 6-2. Instead of stopping the rotation of the drive drum 6-2 and interrupting the winding operation, a mechanism in which a partition plate is inserted between the drive drum and the package can be used.

Further, as the winding device 6, a device constituted by a driving roller and a traverse device can be used.

In the above-mentioned binding spinning machine 1, when the sliver is draft-processed by the drafting device 2 to a preset ratio and supplied to the yarn forming device 3, the binding fiber component is introduced at the inlet of the fiber separation tube 3-1. The fiber bundle is formed, and then false twist is applied to the fiber bundle by the nozzle 3-2. A bundled spun yarn is formed when passing through the nozzle 3-2. Then, the bundled spun yarn spun from the nozzle 3-2 is sent out at a predetermined speed by the take-up device 4, and is suction-stored in a U-shape in the suction pipe 5-1 of the suction-type yarn storage device 5. In this state, it is wound onto a bobbin attached to the cradle 6-1 of the winding device 6.

The yarn spun from the above-mentioned yarn forming device 3 is sent out by the take-up device 4, and is taken up by the take-up device 6 while being sucked into the suction-type yarn storage device 5. When the number of yarns sucked into the suction tube 5-1 of the suction type yarn storage device 5 increases and the yarn detector 5-3 detects the yarns, the drive drum 6-2 of the winding device 6 The clutch mechanism is activated and the yarn is wound. Since the winding speed of the winding device 6 at this time is set to be about 10% faster than the delivery speed of the pulling device 4, the amount of yarn sucked and stored in the suction type yarn storage device 5 decreases. . When the yarn detector 5-3 no longer detects the yarn, the clutch mechanism of the drive drum 6-2 is disengaged and stopped, and the winding of the yarn is interrupted. By interrupting the winding operation, the amount of the yarns stored in the suction type yarn storage device 5 increases, and when the yarn detector 5-3 detects the yarns, the clutch of the drive drum 6-2. The mechanism is activated and the winding of the yarn is restarted. The above operation is repeated to wind the yarn. During this time, the tension necessary for winding the yarn is applied by the tension device 7.

The tension of the yarn 20 in the suction type yarn accumulating device 5 during the above-described winding operation is only given by the air flow sucked into the negative pressure duct 5-2, and is about several grams. And is a very small one. Therefore, when the torque is strong and the yarn has even a thin portion, that portion becomes the snare 20a (Fig. 2-1). Then, when the snare 20a passes through the tension device 7 (FIG. 2-2) and the entire snare 20a passes through the tension device 7 (FIG. 2-3), the tension device 7 causes a predetermined winding tension ( Since several tens of grams are applied, the yarn located at the tension device 7 upstream of the snare 20a is gripped by the yarn winding device 6 and the snare 20a disappears (Fig. 2-4). Then, when the snare 20a disappears, the yarn held by the tensor device 7 starts traveling.

That is, the thread detector 8 is installed at five places so that the distance (H) from the tension device 7 is 10 mm, 20 mm, 30 mm, 40 mm, and 50 mm, and the thread is processed under the following processing conditions. The yarn is spun and sucked into the suction type yarn accumulating device 5, and the generated snares are sequentially counted as the number per hour by the yarn detector 8, and the number of snares actually wound is unrolled by unwinding the wound package. The counted results are shown in Tables 1 and 2.

[Processing conditions] Staple fiber: 100% polyester Fiber length: 38 mm Fiber thickness: 40 cotton count, 50 cotton count Negative pressure inside the suction type yarn storage device: 100 mm Aq, 200 mm Aq Overfeed rate: 5%, 10 %, 15%

[0020]

[Table 1]

[0021]

[Table 2] When the snarl generated in the suction type yarn accumulating device 5 is directly wound into the package, or when the snarl is eliminated between the tension device 7 and the yarn detector 8 and the generated snarl is not wound into the package. The ratio of the ratios varies depending on the distance (H) between the tension device 7 and the yarn detector 8. When the distance (H) is 10 mm, all snares lost during the winding operation are detected. Will be there. On the other hand, when the interval dimension (H) is 20 mm or more, there is no difference in the relationship between the snare number counted by the yarn detector 8 and the snare number wound in the package in the region where the overfeed rate is small, It can be seen that when the space dimension (H) is 50 mm, snalls that disappear during the winding operation are not detected.

For these reasons, the distance (H) between the tension device 7 and the yarn detector 8 must be set to at least 20 mm or more, preferably 50 mm or more.

[0023]

[Effect of device]

 The binding spinning machine of the present invention is configured so that the distance (H) between the tension device and the yarn detector is at least 20 mm or more, so it does not detect the snare that is naturally eliminated during the winding operation. Also, unnecessary spinning stop, snare removal, and spinning restart operations are not performed, and it is possible to prevent a decrease in operating rate.

In addition, the distance (H) between the tension device and the yarn detector is set to 50.
If it is more than mm, it is possible to detect only the snare that is wound into the package regardless of the processing conditions.

[Brief description of drawings]

FIG. 1 is a schematic front view showing an embodiment of the binding spinning record of the present invention.

FIG. 2 is a schematic view showing a snare elimination state in the yarn detector section in FIG. 1 of the present invention.

[Explanation of symbols]

 1 Bundling spinning machine 2 Drafting device 3 Yarn forming device 4 Pulling device 5 Suction type yarn storage device 6 Winding device 7 Tension device 8 Yarn detector

Claims (2)

[Scope of utility model registration request] 1. A binding spinning machine in which a draft device, a yarn forming device, a take-up device, a suction type yarn accumulating device, a tension device, a yarn detector, and a winding device are arranged in this order, and the tension device and the yarn detector. The space dimension (H) is at least 20
A binding spinning machine characterized by having a size of at least mm. 2. The binding and spinning machine according to claim 1, wherein the distance (H) between the tension device and the yarn detector is set to 50 mm or more.