DE1199433B - Device for heating continuously running synthetic threads or yarns - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Ini σ .:

DOId

German class: 29 a -6/31

Number: 1199 433

File number: F 34421VII a / 29 a

Filing date: July 12, 1961

Opening day: August 26, 1965

Devices are used for heating, in particular for hot drawing, synthetic threads or yarns used, on the surface of which the threads are heated when sliding over. The ones known so far Radiators consist of an elongated metal body with a slight in the direction of the longitudinal axis curved tread with a smooth surface, which is covered from its back by an electric heating plate is heated. The metal body and heater are usually enclosed in an insulated housing in such a way that that only the tread is exposed. This running surface has, due to mechanical damage and in particular due to the formation of grooves by the threads sliding over them, only a limited service life, which depends primarily on the titer, speed and material of the thread. It's easy Grooved surfaces cause breaks in the fine threads or fibers and other thread defects. Therefore must the running surfaces of the radiators are refurbished or re-ground after a certain period of operation the. To do this, it is necessary to replace the radiators when the machine is at a standstill and then replace them to be completely dismantled for the necessary treatment of the running surfaces, usually grinding and chrome plating, to be able to perform. In addition to the workload, this method of working also requires provision the corresponding number of reserve heaters.

The invention relates to a device for heating continuously running synthetic Threads or yarns by means of heated surfaces, which are used by the threads or the like Purpose of heating are touched, the device pivoted from the direction of the thread run can be, which is characterized in that a number of thread running surfaces on one Metal body 2 are arranged such that when the body 2 is rotated, a surface through a another, same area is replaced, the metal body 2 on a conical heatable from the inside Metal core 1 is attached and enclosed by a heat-insulating cap 4 with a recess 5 is that only one thread running surface 3 is exposed under the recess 5. The inventive The device is illustrated in FIG. 1 to 5 explained in more detail:

F i g. 1 shows the device in longitudinal and cross-section as well as in plan view. In a conical metal core 1 is the heating device, ζ. Β. an electrically heatable heating cartridge 6 is arranged. A multi-surface metal body 2 is pushed onto the metal core 1 in such a way that it rotates continuously around its longitudinal axis on the device for heating
running synthetic thread or yarn

Applicant:

Farbwerke Hoechst Aktiengesellschaft

formerly Master Lucius & Brüning,

Frankfurt / M.

Named as inventor:
Hans Wildegger, Bobingen

Metal core can rotate. The outer surfaces of the polyhedron body 2 are in the direction of Longitudinal axis is convexly arched and closed by appropriate treatment, such as grinding and chrome plating Fadenlauffiächen 3 formed. Their number can be chosen arbitrarily; it results from the scope of the polyhedron body and the necessary width of the individual thread running surfaces.

The close contact between the metal core 1 and the multi-faceted metal body 2 ensures when in use a highly thermally conductive material, e.g. B. light metal for the metal core 1 and steel for the Polygonal metal body 2, the uniform heating of the thread running surfaces 3.

To protect against damage to the thread running surfaces and against heat loss, the polyhedron metal body 2 a cap 4 pushed on, which has a slot-shaped recess in the direction of the longitudinal axis 5 carries, which releases a thread running surface 3. The cap 4 consists of an outer sleeve with is lined with a heat insulating material. An elastic soft material is used as the insulating material used. Due to the elasticity of the soft material insulation, the inside of the cap 4 nestles closely to the polyhedron body 2.

The multi-surface heating element is mounted so that it can pivot about an axis 7 and is secured by a locking bolt 8 established. For thermal insulation there is an insulating washer between the metal core 1 and the swivel device 9 built in.

The advantage of the heating device according to the invention lies in the fact that the can be exchanged quickly Thread running surfaces 3. For this purpose, the next already heated thread running surface 3 is simply turned of the polyhedron body 2 brought in the place of the damaged thread running surface. Are all

509 658/398

Thread running surfaces 3 damaged, so the heating device after loosening the locking screw 8 to the axis 7 is pivoted out of the thread running direction and, after removing the cap 4, the polyhedral metal body 2 removed from the metal core 1 and replaced with a new one.

The heating of the heating device can not only be electrical, but, as in FIG. 2 can be seen, can also be done by steam or a warm liquid. For this purpose, the metal core 10 is a hollow body formed, on the end face of which inlet and outlet nozzles 11, 12 are arranged for vapor or liquid are.

A special embodiment of the device according to the invention is shown in FIG. 3 shown. The * 5 Thread running surfaces 3 are no longer separate surfaces of a polyhedron metal body, but rather the The metal body 2 pushed onto the metal core 1 has a circular cross-section and is used in FIG its entire surface as a thread running surface. ao

The heating device according to the invention can also be implemented as shown in FIG F i g. 4 is explained. Here, only a correspondingly shaped device part 14 takes the place of the metal core and the pushed-on polyhedron body rotated as a whole about a longitudinal axis can be and is held by a spring-loaded catch 15 in the desired position.

F i g. 5 shows an embodiment of the invention Multi-surface heating element in which the metal core 1 is rotatably mounted. The rotation of the metal core 1 brings the new thread running surface of the pushed-on polyhedron metal body 2 into the recess the cap 4. The spring-loaded catch 15 holds the metal core in the desired position Position fixed.

Claims (6)

Patent claims: 1. Device for heating continuously running synthetic threads or yarns by means of heated surfaces that are touched by the threads or the like for the purpose of heating be, wherein the device can be pivoted from the direction of the thread run, characterized in that a number of thread running surfaces are arranged on a metal body (2) such that at one Rotation of the body (2) one surface is replaced by another, identical surface, whereby the metal body (2) is placed on an internally heatable conical metal core (1) and is enclosed by a heat insulating cap (4) with a recess (5) that only one The thread running surface (3) is exposed under the recess (5). 2. Apparatus according to claim 1, characterized in that the thread running surfaces through Rotating the metal core (1) around its longitudinal axis are interchangeable. 3. Apparatus according to claim 1, characterized in that the thread running surfaces through Rotating the metal body (2) on the metal core (1) are interchangeable. 4. Device according to claims 1 to 3, characterized in that the inner cross section of the metal body (2) a circle, the outer cross-section a regular polygon or a Circle is. 5. Device according to claims 1 to 4, characterized in that the thread running surfaces of the metal body (2) are curved in the direction of the longitudinal axis. 6. The device according to claim 1, characterized in that the metal core (1) and metal body ^) are combined into a single correspondingly shaped device part (14) which is rotatably mounted as a whole about its longitudinal axis. Considered publications:
French patent specification No. 1 205 523,
214 418.1171193. 1 sheet of drawings 509 658/398 8.65 © Bundesdruckerei Berlin