JPH0233513B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the treatment of cords, and more particularly to a method and apparatus for treating reinforcing cords of pneumatic rubber tires with liquid.

Cords of various materials are commonly used as reinforcement in tires, belts, hoses, and various other articles made of rubber or other elastomeric materials. Such cords generally consist of at least one strand, and more typically a plurality of strands joined together into a cable.

Adhesion of the cord to rubber or other materials is generally enhanced by applying an adhesive to the cord. The adhesive is usually applied to the cord in a liquid, such as a liquid mixture or emulsion, and then the water is removed from the liquid, usually by applying heat to evaporate it.

However, the cord is passed under tension through a liquid adhesive immersion zone over squeeze rolls to squeeze out most of the water, and is subjected to wet tension to more thoroughly incorporate the adhesive into the fibers of the cord. Contamination of such squeeze and tension rolls has been experienced in continuous cord bonding processes in which the cord is passed sequentially around the roll and then heated to dry the cord. Contamination on the rolls may consist, for example, of various residues, dried adhesive deposits, etc., and the equipment must be shut down for cleaning.

The present invention provides a method for processing a plurality of individual cords of textile material while moving under tension in a spaced arrangement along a predetermined path, comprising: (1) (2) a squeeze roll zone comprising at least two rotating cylindrical rolls to which an adhesive liquid solution or mixture of said cord is deposited and over which said cord passes in a substantially serpentine manner over a single passageway; moving said cord in the same direction as the rotational direction of the rolls around which it passes, wherein at least two adjacent rolls rotate in opposite directions and these rolls compress the cord between each other; (3) arranged to remove a substantial amount of said liquid solution or mixture from the cord;
The cord is then processed in a tension roll section consisting of at least two spaced apart rotating cylindrical tension rolls, where at least two adjacent rolls rotate in opposite directions so that the cord is (4) drying the cord by heating in a dehumidifying zone; sequentially carrying out the steps of sequentially carrying out the steps of forming a first rigidly mounted squeezable roll loosely disposed over the upwardly facing surface of the upper half of the at least one squeeze roll so as to be in slight contact across the width of the cord; Liquid is additionally removed from the cord in said squeeze roll zone by means of an elastomeric rubber squeezer, and the foamy liquid or material formed on the cord in the pull roll zone is transferred onto at least one pull roll. on the cord in said tension roll area by a second fixedly attached elastomeric rubber squeezer loosely disposed in light contact across the width of the cord on the upwardly facing surface of the half. A method of treating a plurality of individual cords of textile material, characterized in that the bubble-like liquid or substance formed is removed.

Another aspect of the invention provides an apparatus for processing a plurality of individual cords of textile material while moving under tension in a spaced arrangement along a predetermined path. 1) a device for applying an adhesive liquid solution or mixture to said cord; and (2) disposed in a substantially perpendicular plane over which said cord passes in a substantially serpentine manner over a single path. consisting of at least two rotary cylindrical rolls arranged so that the cord travels in the same direction as the rotation of the rolls around which the cord passes, and at least two adjacent rolls rotate in opposite directions and between the adjacent rolls; (3) a squeeze roll section configured to remove a substantial amount of said liquid solution or mixture from the cord;
consisting of at least two adjacent tension rolls rotating in opposite directions, the cord wrapping around the rolls and meandering substantially in the same direction as the rotation of the rolls around which the cord passes over a single passageway; (4) a dehumidification section for heating and drying the cord, the upwardly facing surface of at least one of the squeeze rolls for removing a predetermined amount of liquid from the cord; a first fixed elastomeric rubber squeeze rod loosely disposed in slight contact across the width of the cord at the top and predetermining the bubble-like liquid or substance formed on the cord in the tension roll area; a second fixed elastomeric rubber squeezer loosely disposed on at least one upwardly facing surface of the tension roll to contact the cord across the width of the cord; An apparatus for processing a plurality of individual cords of textile material, characterized in that the apparatus comprises:

The present invention will be described below with reference to the drawings.

The drawings show the continuous processing of the tire cord 1.
In particular, the cord 1 is indexed through a saturation tank 2 containing a liquid dipping solution/mixture of adhesive compound 3. The soaked cord 4 with liquid coating is fed to a squeeze roll section comprising three vertically arranged rolls 6, 7, 8. The cord 4 is fed under tension, as shown in the figure, around the squeezing rolls and through a substantially meandering path between the rolls.
The squeezing rolls are arranged to squeeze the cord as it passes between them, thereby squeezing out a portion of the liquid solution, which is returned to the saturation tank 2.

Opposed to the upper squeeze roll 8 is a squeeze assembly 9, which assembly 9 is shown in more detail in FIGS. 2 and 3. The rubber vanes 10 of the diaphragm assembly 9 lightly abut the cord 4 on the upwardly facing surface essentially by their own weight, thereby providing some scraping effect. This throttling action prevents the cord 4 from being fed to the next stage or area with excess liquid solution, thereby reducing the rate of contamination of the following wet pull rolls. Additionally, the pressure required to be applied to the cord by the squeeze rolls is reduced, with attendant benefits.

From the squeeze roll zone 5, the cord 4 passes through a wet roll zone 11, which includes seven spaced apart rolls 12 around which the cord serpentines approximately under tension. Take a route and pass. The rolls 12 are arranged in a diagonal staggered manner while extending horizontally.

As the cord 4 passes around the last roll 12, another draw rod assembly 13 is disposed in substantially light abutment by its own weight against the upwardly facing surface of the cord 4, and the wet tensile Remove any air bubbles and material that may form on the cord within area 11.

The cord then passes through a dehumidification zone where it is dried by applying heat and then passed through other processing zones until cord processing is complete. This cord is then used as a rubber reinforcement.

Figures 2 and 3 show the important draw rod assemblies 9 and 13. In these figures, the aperture rod assembly consists of a longitudinal rubber vane or rubber rod 10 rigidly attached to or included in a metal rod 14 using a metal piece 15. This metal strip-mounted rubber vane is then attached to two U-shaped metal mounting members 16. The mounting member 16 is loosely mounted about a fixed, stationary circular cross-section mounting rod 17, and a pin or bolt 18 is inserted through a hole 19 formed in the mounting member 16, thereby loosely mounting the assembly. Attach to rod 17.

The functional design of this drawing rod assembly is such that it has a loose connection to the mounting rod 17 which is intentional so that the treated cord 4 rests only slightly against the cord as it passes around the roll 8. It is easily understood that the processing efficiency of the cord 4 can be further improved since it can substantially react to variations in the thickness of the cord 4, etc. without requiring any external operation.

It is conceivable that the cord moves on its predetermined path under tension provided by a suitable device. This device is generally achieved by power driving rotating rolls at a controlled speed.

In this regard, a greater tension is generally applied in the wet pull roll area than in the squeeze roll area, which generally causes some slippage of the cord relative to the individual pull rolls. In fact, stress in the cord has been observed that appears to be applied alternately from one side of the cord to the other, creating a kind of air bubble on the cord, which is removed by the aperture blade or aperture rod assembly. It is desirable to do so.

The invention has been specifically described with respect to means for processing a plurality of parallel, spaced apart cords. The present invention can be effectively used not only for treating cords with weft threads removed, but also for cords joined by light weft threads or transverse cords. Furthermore, the present invention is not limited to the treatment of any predetermined number of cords or to any particular treatment fluid; the present invention has greatest utility in preparing cords for incorporation into elastomeric materials; In this case, the treatment liquid has adhesive properties.

Although some representative embodiments and details have been shown to illustrate the invention, those skilled in the art will appreciate that various modifications can be made without departing from the spirit or scope of the invention. .

[Brief explanation of drawings]

FIG. 1 shows a section or section of a continuous cord processing apparatus in which the cord is immersed in a liquid bath and under tension, passing successively through squeeze rolls and, after passing through wet pull rolls, to a dehumidification chamber. Schematic view, FIG. 2 is an enlarged view of the wringer assembly applied to both the squeeze roll and the pull roll, and FIG. 3 is a side view of the wringer assembly taken along line 3--3 of FIG. It is a diagram. DESCRIPTION OF SYMBOLS 1... Cord, 2... Saturation tank, 3... Adhesive compound, 4... Cord, 5... Squeezing roll area, 6, 7, 8... Squeezing roll, 9... Squeezing tool assembly, 10... ...Rubber blade, 11...Wet tension roll, 12...Tension roll, 13...Drawing rod assembly, 14...Metal rod, 15...Metal piece, 16...
Mounting member, 17... Mounting rod, 18... Pin, 19
...Mounting hole.

Claims (1)

Claims: 1. A method of processing a plurality of individual cords of textile material while moving under tension in a spaced arrangement along a predetermined path, comprising: ) applying an adhesive liquid solution or mixture to said cord; and (2) a squeezing roll comprising at least two rotating cylindrical rolls over which said cord passes in a substantially serpentine manner over a single passageway. moving said cord within a zone and in the same direction as the rotational direction of the rolls around which the cord passes, wherein at least two adjacent rolls rotate in opposite directions and these rolls compress the cord between each other; and (3) a tension roll section comprising at least two spaced apart rotating cylindrical tension rolls arranged to remove a substantial amount of said liquid solution or mixture from the cord; processing said cord in a manner in which at least two adjacent rolls rotate in opposite directions and said cord follows a substantially serpentine path over a single carriageway in the same direction as the rotation of the rolls it encircles and passes therethrough; A method for treating a plurality of individual cords of textile material, comprising sequentially carrying out the steps of: (4) drying the cords by heating in a dehumidifying zone along said path. a first rigidly mounted elastomeric rubber wringer loosely disposed in slight contact across the width of the cord on the upwardly facing surface of the upper half of the at least one wringer roll; Thus, additional liquid is removed from the cord in the area of the squeezing rolls and the bubble-like liquid or material formed on the cord in the area of the pulling rolls is directed upwardly into the upper half of at least one pulling roll. a plurality of individual pieces of textile material characterized in that they are removed by a second, fixedly mounted elastomeric rubber wringer disposed loosely in contact with the lateral width of the cord on the surface; How the code is processed. 2. An apparatus for processing a plurality of individual cords of textile material arranged at intervals along a predetermined path and moving under tension; (2) at least two devices disposed in a substantially vertical plane in which said cord wraps around and passes in a substantially serpentine manner over a single passageway; The cord is made up of two rotating cylindrical rolls, and the cord is made to travel in the same direction as the rotation of the rolls that the cord passes around.
(3) a squeeze roll section in which at least two adjacent rolls rotate in opposite directions and are configured to remove a substantial amount of the liquid solution or mixture from the cord between the adjacent rolls; comprising at least two adjacent tension rolls rotating in a substantially serpentine manner and with said cord wrapping around the rolls in the same direction as the rotation of the rolls over which said cord wraps and passes over a single passageway; a tension roll area passing through;
(4) a dehumidifying section for heating and drying said cords; in an apparatus for treating a plurality of individual cords of textile material, said cords being heated and dried; a first fixed elastomeric rubber squeezer loosely disposed in slight contact across the lateral width of the cord on the facing surface, and a bubbly liquid or a second fixed elastomeric rubber squeezer disposed on at least one upwardly facing surface of the tension roll in light contact across the width of the cord to remove material to a predetermined extent; Apparatus for processing a plurality of individual cords of textile material, characterized in that it comprises: