JPS62158132A - Strand twisting apparatus and method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates generally to strand twisting equipment, and more particularly to an apparatus and method for drying wet strands during a twisting operation.

Conventional technology Bare glass filaments tend to annihilate each other.

Therefore, after drawing bare glass filaments from the molten glass of the bushing, these filaments are directly subjected to water or liquid sizing before being collected into strands and wound into packages. Wet strand packages are often rewound on a twisting frame to form twisted strand packages. Prior to the present invention, wet strands were typically subjected to an infrared heater or hot air stream after exiting the wet strand package and before being twisted and rewound. There are about 100 packages of wet strands in the twisting frame.
There may also be several twisting frames in the factory room.

The temperature and humidity in such rooms become almost unbearable, and infrared heaters and hot air streams consume large amounts of energy.

SUMMARY OF THE INVENTION According to the invention, the twisting frame is provided with an electrically heated hollow cylindrical metal rod with which the running strand comes into direct contact on its way to the twisting bobbin. Drying of the strands takes place with a consumption of only about a third of the power previously consumed by the infrared heater. This also reduces the air conditioning load, resulting in further savings.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring now to the drawings, FIG. 1 shows a twisting frame or strand twisting apparatus 10 that includes a supply package mounting structure 12, which includes a co-supply package 14 of a glass filament strand 16 at the interface. It has a mandrel (not shown) that rotatably supports it. Each strand 16 passes through various guides 18, 20, 22 on its way to the twisting station 24. A horizontal chevron rail 26 supports a plurality of stationary shafts (not shown) spaced apart along the chevron rail, each of which has a hollow spindle 28 rotatably mounted thereon. Only the lower sheave portion of the spindle is shown. The bobbin 30, only the lower flange portion of which is shown, is the strand 28.
are installed respectively. The spindle 28 is the guide roll 3
It is driven by a belt 32 controlled by 4.36. The guide rolls 34,36 of each twisting station 24 are selectively movable to move the belt 32 into and out of driving engagement with the spindle 28. The belt 32 is driven by a pulley 38, which is driven by an electric motor 40 via a gearbox 42.

The horizontal ring rail 44 is provided with a plurality of circular openings, each of which has a circular track 4 around its periphery.
6 is installed. A running yarn path 48 guides each strand 16 so that it can move freely along each trunk 46. Spindle 28 and bobbin 3
0 protrudes through the circular track 46 and the ring rail 4
4 can be vertically reciprocated up and down each bobbin 30 in a conventional manner not shown as the respective strands 16 are wound into packages 50 of twisted strands.

According to the invention, each strand 16 has guides 18 and 20
and passes around the stationary heating rod 52 once in direct contact therewith. The heating rods 52 are mounted in spaced relationship in diagonal sockets 54 of a cable duct 55 extending along the length of the stranding frame 10, and the heating rods 52 are powered by a power cable 56. be done.

2 and 3 show the heating rod 52 and its installation in more detail, with the electrical connections omitted. Cable duct 55 is provided with rear mounting lugs, such as mounting lugs 58, regularly along its length. Initially, the duct 55 is open at the front except for perforated plates 60 spaced along the duct, one of which is shown in FIG. Sockets 54 have angled inner ends so that the sockets are each mounted to perforated plate 60 at an angle of approximately 15 degrees below the horizontal plane. Only the upper half of the inner end of each socket 54 is welded or fixed to the respective perforated plate 60 and partially to the upper wall of the duct 55. A lid plate 61 is fixed between the perforated plates 60. The lower half of each socket 54 is split and the front end is provided with perforated lugs 62, 63 on either side of the split. Bolts 64 extend through the lugs 62.63 and cooperate with threaded nuts 65 to tighten the flanged inner socket 66 of the insulation in place. The lower half of the inner socket 66 is also split so that the heating rod 52 is similarly tightened in place by tightening the bolt 64.

Each heating rod 52 has an electrically insulating plastic base 68
electrical terminals 69,70 are molded into the plastic base and electrically connected to a smooth hollow cylinder 72 which is closed at its outer end and whose inner end 72 is closed.
a is installed in the groove of the base 68. Cylinder 72 is preferably made of brass. The power cables 56 include electrical wires that are electrically connected to the electrical terminals 69, 70 of each heating rod 52 in a manner not shown.

Each strand 16 passes around a respective heating rod 52 once on its way to its respective package 50.

The voltage at terminals 69,70 can be varied according to the speed of strand 16, so that the strand is essentially dry before being wound into package 50. Various modifications may be made to the structure shown and described without departing from the spirit and scope of the invention as set forth in the appended claims.

[Brief explanation of drawings]

1 is a partial schematic diagram of a twisting frame or strand twisting device constructed according to the present invention; FIG. 2 is a partial sectional view taken along line 2--2 in FIG. 1; and FIG. 3 is a partial sectional view taken along line 3 in FIG.
It is a sectional view at -3. DESCRIPTION OF SYMBOLS 10... Strand twisting device, 12... Supply package mounting structure, 14... Supply package, 24...
- Twisting station, 50...Package of twisted strands, 52...Fixed heating rod.

Claims (14)

[Claims] (1) a device for rotatably mounting a supply package of wet strands, a twisting station located below the device for mounting the supply package for rewinding the strands from the supply package into packages of twisted strands, respectively; and a supply package; and a fixed heating rod mounted between the twisting station and the twisting station, each strand being in direct contact with the respective heating rod on its way to the respective twisting station. (2) The strand twisting device according to claim (1), wherein the heating rod is electrically heated. (3) The strand twisting device according to claim (1), wherein the heating rod is made of brass. (4) Claim (1) characterized in that each of the heating rods is attached at an acute angle downward from a horizontal plane.
Strand twisting device as described in Section. (5) The strand twisting device according to claim (1), wherein the strand is a glass strand. (6) The strand twisting device according to claim (1), wherein each of the heating rods has a hollow cylindrical shape. (7) Claim (1) characterized in that each strand passes essentially once around a respective heating rod.
Strand twisting device as described in Section. (8) Rotatably mount a wet strand supply package, pull the strands from the rotatably mounted supply package to a twisting station, rewind the strands at the twisting station into a package of twisted strands, and place the strands at the twisting station. Strand twisting method characterized by direct contact with an upstream heating rod. (9) A method according to claim 8, characterized in that the strand is passed essentially once around the heating rod on its way to the twisting station. (10) The strand twisting method according to claim (8), wherein the heating rod is electrically heated. (11) The strand twisting method according to claim (8), wherein the heating rod is made of brass. (12) The strand twisting method according to claim (8), wherein the heating rod is attached at an acute angle downward from a horizontal plane. (13) The strand twisting method according to claim (8), wherein the strand is a glass strand. (14) The strand twisting method according to claim (8), wherein the heating rod has a hollow cylindrical shape.