US3902834A

US3902834A - Blowshaft

Info

Publication number: US3902834A
Application number: US484921A
Authority: US
Inventors: Otto Heinrich Graf Hagenburg
Original assignee: Individual
Current assignee: Individual
Priority date: 1974-07-01
Filing date: 1974-07-01
Publication date: 1975-09-02
Anticipated expiration: 1992-09-02

Abstract

A blow shaft insertable between a spinning nozzle and a spooling device for making synthetic textile fibers of thermoplastic material, in which on a base plate there is vertically arranged a first frame one side of which has provided thereon connecting bolts for detachably receiving thereon second frame means forming part of rectifier means and for also detachably receiving a rear hood, whereas the other side of the first frame means is provided with welded-on portions to which doors forming part of a spinning chamber are hinged.

Description

United States Patent Hagenburg Sept. 2, 1975 [541 BLOWSHAFT 3,551,949 1/1971 Leyboume ct a1 425/445 [76] Inventor: Otto Heinrich Graf Hagenburg,

T tte k f Strasse 6 8192 Primary ExaminerRobert L. Spicer, Jr.

G i d 2 Germany Attorney, Agent,.0r Firm--Wa1ter Becker [22] Filed: July 1, 1974 57 ABSTRACT A blow shaft insertable between a spinning nozzle and a spooling device for making synthetic textile fibers of [52] US. Cl. 425/73; 425/72; 425/445 thermoplastic material in which on a base plate there [51] Int. Cl D0ld 11/00 is vertical] arran ed a first frame one Side of which 58 Field of Search 264/176 F; 57/157 F; y g

has provided thereon connecting bolts for detachably 425/66, 72, 73, 404, 445

receiving thereon second frame means forming part of rectifier means and for also detachably receiving a [56] References Cned rear hood, whereas the other side of the first frame UNITED STATES PATENTS means is provided with welded-on portions to which 2,940,122 6/1960 Collat 425/72 doors forming part of a spinning chamber are hinged. 3,067,459 12/1962 Brand 3,320,343 5/1967 Buschmann ct al. 425/72 X 5 Claims, 4 Drawing Figures 6 g 5 I I 1:

6 1: Anna: 7

l t; t f "I. 'nJ

PATENTED SEP 21975 Prior Ar Fig.1

BLOWSHAFI The present invention relates to a blow shaft for manufacturing synthetic textile fibers and thermoplastic material, said blow shaft being arranged between a spinning nozzle and a spooling device.

Blow shafts of theabove. mentioned type have th purpose by means of a flow of climatized air transverse to the spinning direction to consolidate-the textile fibers by cooling and to tighten them by displacement out of the spinning plane. In order to align the air flowing uniformly parallel and transverse to the spinning direction, a rectifier system is provided which is arranged on a side wall of the spinning chamber.

It is known on a base plate I) to provide a stabile back f(FlG. l which simultaneously forms the damming up or accumulating chamber. This arrangement results in a central and supporting structural element, the individual parts of which are firmly and permanently connected to each other. On said central and supporting structural element, as closure relative to the spinning chamber, there are the rectifier systems and :1 built in while as lateral confinement of the spinning chamber there are connected for instance doors g. The construction of such blow shafts, however, is extremely expensive because no economic production of parts thereof is possible. The reason for this was the lack of clearly subdivided construction groups. Above all, with such an arrangement, the elements of the rectifying system and the spinning nozzles were accessible only under difficulties and above all not from all sides. It is, therefore, an object of the present invention to provide in a simple construction a blow shaft of prefabricated elements adapted to be arranged in single structural groups in which the rectifier system can easily be cleaned and exchanged while the spinning nozzles are accessible from all sides.

These and other objects and advantages of the invention will appear more clearly from the following specification in connection with the accompanying drawing, in which:

FIG. 1 illustrates a side view of a heretofore known blow shaft.

FIG. 1a is a top view of FIG. 1.

FIG. 2 is an exploded side view of a blow shaft according to the invention.

FIG. 3 shows the blow shaft of FIG. 2 in top view likewise in exploded condition.

The blow shaft according to the present invention is characterized primarily in that on a base plate there is vertically arranged a frame which on one of its sides has connecting bolts on which the frames for receiving the rectifier elements and the back hood provided on a frame are adapted to be placed, and on the other side of which is provided with welded on portions with vertical bores on which the doors forming the spinning chamber are suspended with hinges and pins. It is expedient that the frames of the rectifier system and of the back hood have a cross section which in superimposed condition covers the frame connected to the base plate while the outer surface of the frames of the rectifier elements are parts of the outer surface of the blow shaft.

The rectifier system may consist of a back-up wall inserted in a frame, and of a fine mesh grate clamped into a further frame. All above mentioned frames are expediently made of square steel pipe.

Referring now to the drawing in detail, on the base plate 1 (FIG. ,2) there are arranged vertical struts 4 which fonn a frame 2 and preferably consist of tubular square steel pipe. The vertical struts have their upper ends interconnected by a transverse latch 5. The vertical struts 4 have on oneside thereof connecting bolts 6 with screw thread and on that side which is located opposite thereto have two welded on portions 7 with a vertical bore each. These parts result in the stationary framework of the blow shaft.

The rectifier system 3 comprises two

steel pipe frames

8 and 9 one of which comprises the damming up wall whereas the other has a wire screen fabric which is placed over its free width. These two frames are with corresponding bores slipped onto the connecting bolts 6. The

frames

8 and 9 may also comprise other elements for deviating and quieting the elements producing the air flow. Provided in front of the rectifier system 3 there is arranged a rear hood 10 which comprises for instance a sheet metal planked frame of square shaped steel pipes. This rear hood forms the back-up chamber. The back-up chamber is like

frames

8 and 9 with corresponding bores placed upon the connecting bolts 6 and together with

frames

8 and 9 is screwed thereon. The spinning chamber located on the oppositely arranged side of the frame 2 is laterally confined by the two

doors

11 and 12 which by means of hinges l3 and pins can be pivotally fastened in the bores of the welded on portions 7 on frame 2. The doors are expediently made of aluminum sheet metal having a thickness of approximately 5mm and may also be provided with windows 14. The blow shaft thus consists substantially of three structural groups, namely the fixed base framework comprising the base plate and the vertically standing frame 2 onto which on one side there are placed the rectifier system and the rear hood and are screwed thereto, and on its other side there is provided the spinning chamber comprising the

doors

11 and 12. The assembly can be carried out with a few manual operations. The cleaning of the elements of the rectifier system is easily possible by withdrawing the rear hood 10 while the

frames

8 and 9 can likewise be withdrawn. By unhinging the doors 1 1 and 12, the spinning nozzles arranged above the spinning chamber will be accessible from all sides. With heretofore known blow shaft constructions this was possible only by a cumbersome disassembly of the entire construction.

It is, of course, to be understood that the present invention is, by no means, limited to the specific showing in the drawing but also comprises any modifications within the scope of the appended claims.

What I claim is:

1. A blow shaft adapted to be placed between a spinning nozzle and a spooling device for manufacturing synthetic textile fibers from thermoplastic material, which includes: a base plate, first frame means vertically arranged on said base plate and connected thereto, connecting bolt means provided on one side of said first frame means, protrusion means protruding from and arranged on the other side of said first frame means and provided with substantially vertical bores, second frame means forming part of a rectifier system and detachably mounted on said bolt means, a rear hood including third frame means and being likewise detachably mounted on said bolt means and being located on the outside of said second frame means remote from said first frame means, door means provided 3 with hinge means, and pin means pivotally and hingedly connecting said door means to said protrusion means, said door means forming part of a spinning chamber.

2. A blow shaft according to claim 1, in which said first and second and third frame means have a vertical section of substantially the same size so that said first frame means and said second frame means and said rear hood cover each other when in mounted condition.

3. A blow shaft according to claim 1, in which said of the outer surfaces of said blow shaft.

Claims

1. A blow shaft adapted to be placed between a spinning nozzle and a spooling device for manufacturing synthetic textile fibers from thermoplastic material, which includes: a base plate, first frame means vertically arranged on said base plate and connected thereto, connecting bolt means provided on one side of said first frame means, protrusion means protruding from and arranged on the other side of said first frame means and provided with substantially vertical bores, second frame means forming part of a rectifier system and detachably mounted on said bolt means, a rear hood including third frame means and being likewise detachably mounted on said bolt means and being located on the outside of said second frame means remote from said first frame means, door means provided with hinge means, and pin means pivotally and hingedly connecting said door means to said protrusion means, said door means forming part of a spinninG chamber.

3. A blow shaft according to claim 1, in which said second frame means includes a first frame with a backing-up wall inserted thereinto and also includes a second frame with a fine mesh screen inserted thereinto.

4. A blow shaft according to claim 1, in which said first and second frame means and said third frame means include steel pipes of square cross section.

5. A blow shaft according to claim 1, in which the outer surfaces of said second frame means form a part of the outer surfaces of said blow shaft.