JPS59149270A - Device for winding filament bundle on feed roller - Google Patents

Abstract

PURPOSE:To prevent remaining of unfibered strands wound on the tip of a roller by winding a strand on a collet while a feed roller in normal rotational condition, advancing the collet, stretching the fibers, and by threading thereafter the yarn through the feed roller. CONSTITUTION:After drive of a cutter roller 10 commences and this cutter roller and a feed roller 9 are at regular speed, No.1 strand 5a is drawn in alignment and wound on a collet 75 upon threading a groove in main guide roller 8 and an aux. guide roller 61, and at the same time drive of the collet 75 is started. When this collet 75 attains a specific regular speed, a pin 62 advances to set off the strand 5a from detention with the aux. guide roller 61. At this time, strand 5a contacts the feed roller 9 to be taken up by the collet 75. Then cylinder 87 of a yarn guide device 81 is put in operation, and the strand is depressed by a move guide 83, where the cutter will cut off the strand. Now yarn guide is completed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for winding a filament bundle around a feed roller that brings the filament bundle into contact over a predetermined angular range and takes the filament bundle at a predetermined take-up speed using M frictional adhesive force.

Conventionally, glass fiber strands (filament bundles) pulled out from a spinning furnace and bundled are directly cut into chopped strands by a cutting device without being wound up as a package, and shaken onto a υ traveling conveyor by a shaking device. Methods of forming the glass fibers directly into a web are known; these methods use feed rollers in front of a cutting or shaking device to provide the glass fiber strands with the necessary tension for drawing. ing. In the case of man-made fibers and synthetic fibers, this feed roller generally uses a pair of feed rollers that sandwich the strands between them and take them off, but in the case of glass fibers, the fibers are brittle and the sizing agent is Because the strands are adhesively bonded, it is not convenient to hold the entire strand, so for example, as shown in Japanese Patent Publication No. 50-27089, one feed roller is used to hold the strand on its circumference within a predetermined angle range. A method has been carried out in which glass fibers are brought into contact with each other and subjected to frictional viscous force to form them into υ-stretched fibers.

In this method, at the beginning of the work, the feed roller is rotated at low speed in order to wind the glass fiber strand around the feed roller. and then winding it around the tip of the feed roller while gradually accelerating the feed roller, and when the feed roller reaches a predetermined speed necessary to obtain a strand of a predetermined fineness (hereinafter referred to as fiberization speed), The strand is moved to the center of the feed roller and the cutting or shaking operation begins. In the darning method, the unfiberized filament that is wrapped around the tip of the feed roller before the work starts remains intact during the work, so it gradually unravels and scatters in fluff and falls into the product, impairing its quality. It has the disadvantage of being damaged. In addition, since the unfiberized filament is quite thick and has a rigid structure, the end of the unfibered filament is extremely dangerous because it is completely exposed to the surface of the feed roller and is swung around in a large arc away from the peripheral surface of the feed roller. One way to avoid this is to wind the strand around the feed roller, then quickly increase the speed of the feed roller to the fiberizing speed and wrap it around the tip of the feed roller to minimize the length of the remaining unfiberized filament. However, this method has disadvantages in that the strands are subject to sudden tension and are likely to break, and the feed rollers are likely to wear out.

Alternatively, when producing chopped strands, an unfiberized filament is wound around the cut surface of the feed roller from the beginning, and the circumferential speed of the feed roller is gradually adjusted to the fiberization speed while cutting with a cutter roller. A method has been implemented in which only the chopped strands that have been completely thinned and cut are taken out as a product. In this method, it is necessary to considerably increase the pressing force of the cutter roller against the feed roller in order to cut the unfiberized filament, which is considerably thicker and more rigid than normal filament11). This creates a gap 9 between the blades, which interferes with normal filament cutting operations, and also greatly accelerates damage to the cutter grade and feed roller. Further, as a result of passing a thick unfiberized filament with a large tension onto the surface of the cut portion of the feed roller formed of an elastic material, a large dent is created on the surface of the feed roller, causing miscuts after normal cutting operations have begun. Particularly when such work is carried out by unskilled workers, they often make a mistake in feeding the filament mixed with uncooled glass to the feed roller, resulting in burnout of the feed roller, breakage of the cutter blade, etc. There are things that can lead to trouble. Particularly in the latter case, the broken blade may fly off as the cutter roller rotates at high speed, which is dangerous.

The present invention provides a feed-row two-winding device for filament bundles that can solve the problems associated with devices that use one feed roller to take up filament bundles by frictional adhesive force. The purpose is to

The feed roller winding device of the present invention that achieves the above object includes a collet that is arranged parallel to the side of the feed roller and winds the filament bundle at the start of winding, and a collet that winds the filament bundle wound around the collet. A device that partially contacts the circumferential surface of the row 2, and a device that contacts the filament bundle between the feed roller and the collet and can move back and forth to deflect the travel path of the filament bundle in a direction that increases the contact angle of the feed roller. It is characterized by the provision of a moving guide.

According to the present invention, at the start of work, the sifted roller is rotated at a high speed at a fiberizing speed, the bundle of unfiberized filaments is first wound around a pret, and then the rotational speed of the collet is adjusted to a fiberizing speed. After increasing the speed to a slightly higher speed, the filament bundle is brought into partial contact with the circumferential surface of the feed roller, and finally the moving guide is advanced to cause the filament bundle to cross the circumferential surface of the feed roller within a predetermined angle range. Since it is brought into contact and taken over by Feedrow 2,
Only completely fiberized filament bundles are taken up by the feed roller, thereby avoiding the above-mentioned problems.

Hereinafter, an embodiment in which the present invention is applied to a glass fiber strand wire forming apparatus will be described with reference to the drawings.

As shown in FIG. 1, a bushing 1 at the bottom of the spinning furnace has a large number of nozzle holes (for example, 400 to 2,000) through which a large number of glass filaments 2 flow out. The filament 2 is coated with a nucleating agent containing a lubricant gas in a coating device 3, and is further focused into one strand 5a in a focusing row 24. Similarly, strands 5b and 5c are formed in another spinning furnace (not shown). These sub-troughs 5a+5'or 5c are supplied to the cutting device γ via a guide shoe 6 having a groove corresponding to each strand. The cutting device 7 has a main guide roller 8, a feed roller 9, and a cutter roller 1o. During normal operation, the strand passes through the main guide row 28, comes into contact with the circle fi't1 surface of the feed roller 9 as if it is broken, rotates at a legal angle of 0 circle, and then is cut by the cutter roller 10.
A chopped strand 11 of a certain length is conveyed to the conveyor 1.
2 and transported as products. Strand 5
The glass filaments constituting a, 5b, and 5c are drawn and drawn into fibers only by the viscous force caused by the contact of the strands with the peripheral surface of the feed roller 9 over a predetermined angle θ.

Next, to explain in detail with reference to FIGS. 2 and 6, the feed roller 9 is a roller whose circumferential surface is lined with a material having a large coefficient of friction against glass fibers such as polyurethane or tan rubber. Fixed. The shaft 21 is rotatably held by a bearing 23 via a bearing (not shown), and the shaft 21 is held by a bolt 3 on a support base 29.
It has been identified as 1.

The housing support stand 29 is slidably held by a rod 37 held on the stand 33 via a support body 35.
The rod 37 extends in a direction perpendicular to a vertical plane containing the axis of the shaft 21 of the feed roller 9. Thus, the feed roller 9 is movable in the water direction in FIG. 2 together with the housing support 29, and can come into contact with or separate from the cutter roller 10. A contact pressure adjusting cylinder 39 is further mounted on the pedestal 33, and its piston rod 39a is connected to the nozzle support 29. The cylinder 39 adjusts the contact pressure of the feed roller 9 against the cutter roller 10.

The cutter roller 10 is rotatably supported at a fixed position on the pedestal 33, and has a circumference of 5 to 50 mm in the axial direction on its circumferential surface.
A large number of blades are planted at equal intervals with an inclination angle of 25°. A pulley 41 is connected to the cutter roller 10, and is connected to a cutter roller driving element 43 via a belt 45. Thus, the cutter roller 10 is driven by the motor 43, and the cutter roller 10 is rotationally driven by the feed roller 9Vc.

The main idle roller 8 has a groove 47 corresponding to each strand and is rotatably supported by a shaft 51, while the shaft 51 is held slidably in the axial direction by a bracket 55 fixed to the housing support 29. has been done.

Furthermore, a piston rod 57a of a guide roller position adjustment cylinder 57 fixedly held on a bracket 55 is connected to the shaft 51, and the piston rod 57a is mainly guided by the groove 47 of the idle roller 8 and wound around the feed roller 9. When the feed roller circumferential surface wears out, the position of the strands on the circumferential surface is changed.

A variable speed motor 73 is attached to the upper end of a frame 71 that stands upright from one side of the pedestal 33.
A collet 75 is held at 3a. In this embodiment, as the variable speed motor 73, a two-stage variable speed motor that can be switched between high and low speeds is used. The collet 75 is used to temporarily wind up the strand when the strand is wound onto the feed roller 9.

A yarn guide device 81 is provided between the collet 75 and the feed roller 9.
is located. The yarn guide device 81 is a semi-cylindrical moving guide 83 that is made of a carbon bush and has a 7-shaped groove on its circumferential surface.
and scissors 85.

The moving guide 83 and the scissors 85 can move forward and backward together in the direction of the arrow in FIG. 2 by a cylinder 87. The cylinder 87 is held by a rod 89 as clearly shown in FIG. is fixed to a column 91 that stands upright approximately at the center of the frame 33. A scissor opening/closing cylinder 95 is connected to the scissors 85.

An auxiliary guide roller 61 is rotatably arranged on a shaft 63 fixed to the upper end of the frame 72 that stands upright on the other side of the frame 33 facing the frame 71, and the strand 5 introduced from the main guide roller 8 to the collet row 275 guide so as not to contact the feed roller 9. The peripheral surface of the auxiliary idle roller 61 on which the strands are held has a flange only at the rear, making it easy for the strands to come off forward.

Four extending parallel to the shaft 63 of the auxiliary guide roller 61 below. A bin 62 extending in a direction intersecting the running strand 5 is attached to the tip of the drawer 4, and the bin 62 can be moved forward and backward toward the system strand by means of a cylinder 65 attached to a frame 72.

Each of the cylinders and motors described above are connected to a control device (not shown), and are configured to be sequentially controlled so that the thread hooks described below operate. Since the detailed structure of the control device is not directly related to the present invention, it will be omitted, and only the sequence operation will be explained below.

First, we will explain the yarn threading operation when starting spinning and cutting 1@ from a state in which all spinning devices are stopped. In addition, in the following explanation, the normal spinning speed (feed roller speed) is 10
00 m/min.

First, the drive of the cutter roller 10 is started, and the cutter roller and feed roller 9 are at a steady speed (10,00 m/min).
be made into Next, the strands 5a of the first scan are aligned, passed through a predetermined groove of the main guide roller 8 and the auxiliary guide roller 61, and wound around the collet 75, and at the same time, driving of the collet is started. The collet 75 is gradually accelerated and reaches a high speed (slightly higher than normal spinning speed, for example set at 10507Z&/min) after a few seconds.

Note that before the strand 5'a f is hung on the collet, the collet may be rotated in advance at a low speed (for example, 200 m/min) or a high speed, and the strand may be wound around the rotating collet.

When the collet 75 reaches a steady speed, the bin 62 moves forward and the strand 5a is engaged with the auxiliary guide roller 61.
Then move the auxiliary guide roller 61. At this point, the strand 5a is in contact with the feed row 29 over a contact angle α and is wound onto the collet 75. Next, the cylinder 87 is actuated and the moving guide 83 pushes the strand downward to a position where a predetermined contact angle α2 is obtained, and when the position is reached, the scissors 85 are actuated to cut the strand. Upon cutting, the strands are naturally fed into the chopping position by adhesive contact against the feed rollers,
The thread guiding is completed.

With this, the operation of threading the first strand onto the feed roller is completed, and thereafter the first strand is spun and cut at a normal speed.

Next, the threading of each strand from the second scan onwards is
The procedure is similar to the threading of the first strand, without interfering with the normal speed spinning and cutting of the second strand.

The reintroduction of the strands that were broken during operation is carried out in the same manner as the above-mentioned threading of the strands after the 2'th stitch.

In carrying out the above method, in order for the strand wound around the collet 75 to adhere to the circumferential surface of the feed roller 9 and enter the navigating position, the contact angle with the feed roller must be α0. α2 and the relative speed to the feed roller are important. The inventors conducted thread insertion under various conditions and came to the following conclusion.

(a) Contact angle α0 required for thread insertion. α2 is 160 degrees ±6
It is 0 degrees.

(b) The collet speed must be equal to or greater than the feed roller speed, and preferably collet speed = feed roller speed x 1.1.

Note that the upper limit of the collet speed is 1 of the feed roller speed.
．． It was 5 times more.

In the above embodiment, the guided strand is cut by the insert 85, but it is obvious that this can be replaced with a knife, and since the cutter roller 10 is used, scissors or a knife can be used instead. You can also omit it. That is, when the rotation of the collet 75 is stopped when the strand is brought into contact with the peripheral surface of the feed roller 9 over an angle α2 by the moving guide 83, the strand is sent to the chopping position by adhesive contact with the feed row 2 and cut by the cutter roller 10. This is because it can be done. Still, instead of the assistant advancing the bin 62 to remove the strand from the idler roller 61, the assistant may be configured to allow the idler roller 61 to retreat axially.

Further, in the above embodiment, the operations from winding the strand around the collet 75 to supplying it to the chopping position, that is, increasing the speed of the collet 75 to a predetermined speed, advancing the shaft 62, advancing the moving guide 83, and operating the scissors 85, are described. It is easy to configure the system so that each operation of the system is controlled in a sequential manner.

In addition, the action of separating the strand from the feed roller before starting threading, increasing the speed, and then bringing the strand into contact with the feed roller over an angle α1 is achieved by using the auxiliary roller 61 and the pin 72, as described in Japanese Patent Application No. 57-54224. This can also be achieved by making the collet movable around the feed roller as shown in FIG.

The above embodiment shows an example in which the present invention is applied to a chopped strand manufacturing apparatus in which a strand taken up by a feed roller is cut by a cutter roller. The present invention is not limited to this invention, and is applicable to any device that uses a feed roller in which the strand is brought into contact with the circumferential surface of the feed roller over a predetermined angle and is taken off by frictional adhesive force, regardless of the final treatment to which the strand is subjected. It is possible. For example, it is possible to use a device that uses the above-mentioned type of feed row 2 to shake off the strands taken on a conveyor running below the feed roller using a shake-off device without completely cutting the strands to form a continuous web. Applicable.

In the present invention, while the feed roller is kept in a normal rotation state, the strand to be threaded is spun up on all collets to be threaded, and the collet is sped up to form drawn fibers, which are then threaded onto the feed roller. Various drawbacks caused by the fiberized strand remaining wrapped around the tip of the feed roshe can be eliminated.

Additionally, although the present invention is intended to be applied specifically to devices relating to glass fibers, it will be apparent that it is equally applicable to devices involving synthetic fibers and other man-made fibers.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing a living body of a glass fiber chopped strand manufacturing apparatus to which the present invention is applied as an embodiment. FIG. 2 shows the embodiment of FIG. 1 in a front view showing the details of the embodiment, with the thread guiding device in operation. FIG. 6 is a side view of the same and shows the thread guiding device in a standby state. FIG. 4 is an enlarged side view of the thread guiding device. 1... Spinning furnace 5.5a, 5b, 5c... Strand (filament bundle) 8... Main guide roller 9... Feed roller 10... ...Cuckoo Rolla 61...a! I-Suke Guy Guide Low 262...
・Bin 75... Collet 81... Thread guide device 83... Moving guide 85... Scissors (cutting device) Representative Asamura Kogai 4 people 1st Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] (1) A device that wraps the filament bundle around a feed roller that traverses the filament bundle over a predetermined angular range, makes contact with the circumferential surface, and takes up the filament bundle at a predetermined take-up speed using frictional adhesive force. a collet that is arranged parallel to the side of the feed roller and winds up the filament bundle at the start of winding; and a device that brings the filament bundle wound around the collet into partial contact with the peripheral surface of the feed row 2. ,
A feed characterized in that a movable guide that contacts the filament bundle between the feed roller and the collet and deflects the running path of the filament bundle in a direction that increases the contact angle with the feed roller is provided. Roller winding device. (21) The winding device supports the collet at a fixed position on one side of the feed roller, and also includes a main guide roller that guides the filament bundle wound around the collet, and a main guide roller that supports the collet and the main idle roller. Claim 1, characterized in that an auxiliary device for guiding the filament bundle between and holding the filament bundle so as not to come into contact with the feed roller includes an idle roller and a device for removing the filament bundle from the auxiliary guide roller. (3) The filament bundle removal device comprises a guide bin that contacts the filament bundle in the vicinity of the auxiliary guide roller and moves in the axial direction of the auxiliary guide reeler. The winding device according to claim 2. (4) The filament bundle removing device is configured by making the auxiliary guide row 2 movable in the axial direction. (5) Any one of claims 1 to 4, characterized in that a filament bundle cutting device is provided near the movable guide so as to be movable forward and backward together with the movable guide. Wrapping device described in .