RU2473723C2 - Unit and method of flattening harness and the flattening plant - Google Patents

Abstract

FIELD: textiles, paper.

SUBSTANCE: unit of flattening the harness for the flattening plant is proposed, comprising a base fixed on the flattening plant on the harness path and having a lower surface and a substantially flat upper surface, the hole for connecting a vacuum pump made essentially in the middle of the lower surface of the base; the groove made in the upper surface of the base, extending substantially perpendicular to the direction of passage of the harness and coupling with the hole for connecting a vacuum pump; two plates having a ledge which shape matches the shape of the groove, and mounted on the upper surface of the base so that the ledge is placed in the groove, and at least one plate is made movable along the groove for adjusting the distance between the plates, which determines the width of the flattening the harness. In addition, the flattening plant is proposed which comprises such unit, and the method of flattening the harness in the said unit.

EFFECT: invention enables to flatten evenly the harness of different typical sizes.

12 cl, 7 dwg

Description

Technical field

The present invention relates to the field of flattening harnesses and, in particular, to a site and method for flattening a harness, as well as to a flattening installation comprising such a unit.

State of the art

According to the prior art, the process of flattening a bundle, for example a carbon filament (3K, 6K, 12K, 24K, 50K, 320K), was carried out in the site of flattening the bundle by injecting an air stream into it, by means of which the flattening of the bundle was achieved, i.e. changing its properties. In particular, the tourniquet was continuously fed into the indicated assembly, in which a high-pressure air stream directed at the tourniquet directly covered it. One example of such an installation is disclosed in US Pat. No. 6,722,116. However, such a flatter assembly has several disadvantages. Firstly, in such a unit it was impossible to achieve a uniform structure of the bundle, since the reflected air could enter the incoming air stream and, thus, weaken or decelerate the direction of the incoming stream. Secondly, the production of bundles with different parameters was difficult, because for the production of bundles of various thicknesses it was necessary to change the entire assembly.

SUMMARY OF THE INVENTION

Thus, it is an object of the present invention to provide an assembly and method for applying a tow, which eliminate the above disadvantages.

According to a first aspect of the invention, there is provided a bundle flattening assembly for a flat installation, comprising: a base fixed on a flat installation in the path of the bundle and having a lower surface and a substantially flat upper surface; a hole for connecting a vacuum pump, made essentially in the middle of the bottom surface of the base; a groove made in the upper surface of the base, extending substantially across the direction of travel of the tow and communicating with an opening for connecting a vacuum pump; two plates having a protrusion, the shape of which corresponds to the shape of the groove, and mounted on the upper surface of the base so that the protrusion is placed in the groove, and at least one plate is movable along the groove to adjust the distance between the plates, determining the width of the tow.

Preferably, at least one plate is moved manually.

Preferably, the movement of at least one plate is carried out by an electric motor.

Preferably, both plates are movable.

Preferably, the assembly further comprises a connecting pipe fixed in the hole for connecting the pump.

Preferably, the base comprises openings for accommodating fastening means for attaching to the flat installation.

Preferably, the fastening means are bolts.

Preferably, the base comprises attachment means for attaching it to the flat installation.

Preferably, the fastening means are in the form of latches.

Preferably, the bottom surface has a substantially flat shape.

According to a second aspect of the invention, a flattening apparatus is provided comprising the towing area described above.

According to a third aspect of the invention, there is provided a method for flattening a bundle in a flattening unit described above, wherein a predetermined flattening width of a bundle is set by moving at least one plate to adjust the distance between the plates of the flatting unit; applying a vacuum to the area unit using a vacuum pump through a hole for applying a vacuum; submitting the tow to the flattening assembly along the path of the tow; and carry out the flattening of the bundle as it passes through the groove of the flattening unit.

The technical result of the present invention is the provision of such a process of flattening the tow, which ensures uniform flattening of the tow of various sizes.

The advantage of the assembly site of the bundle, according to the invention, is the speed of regulation, since the bundles of different manufacturers have different texture with the same size. When flattening in an unregulated bundle flattening unit, some bundles reach a predetermined width, others, due to specific weaving, cannot spread to the width of the unregulated bundle flattening unit. In this case, when using the claimed site of flattening the tow, you can achieve the desired result. To do this, you just need to set the distance between the moving plates corresponding to a given width of the outgoing tow.

Brief Description of the Drawings

The present invention will now be described in more detail with reference to the accompanying drawings, in which:

Figure 1 - schematic diagram of the flat installation;

Figure 2 is a perspective view of a variant of implementation of the flat installation;

Figure 3 is a perspective view of the assembly site of the tow;

Fig. 4 is a perspective view of a plate of a towing assembly;

Figure 5 is a perspective view of the assembly site of the bundle without plates;

FIG. 6 is a plan view of a towing assembly; FIG. and

Fig. 7 is a bottom view of a towing assembly.

DETAILED DESCRIPTION OF THE INVENTION

As shown in FIG. 1, the flattening installation according to the invention, generally indicated by the reference numeral 1, comprises a frame frame 2 onto which are sequentially mounted: a self-unwinding reel 3, designed to receive the starting material and gradually unwind it; shafts 4, 5 and 6 for centering the bundle relative to the longitudinal axis of the installation 1 and ensuring the specified tension of the bundle; a drive pair of shafts 7 for unwinding a tow from a self-unwinding reel 3; triaxial cap 8 for impregnation of tourniquet with a dressing; node 9 flat tow; oven 10 for drying the tow after plating; a drive pair of shafts 11 to compensate for the tension of the bundle after flattening and a drive unit 12 for installing bobbins or coils onto which the flattened bundle is wound. Moreover, in FIG. 1 and 2 show only an example of the frame frame 2 of the scaffold 1, and the present invention is not limited to such an embodiment of the scaffold. For example, a flattening installation may be performed in a line without using a frame 2.

To obtain the finished bundle, a bobbin 3 is installed with the starting material in the form of carbon fiber filament 13 on the frame 2. The bobbin 3 is installed with the possibility of self-unwinding on the axis of rotation, which can be fixed on the frame 2. In addition, a latch can be provided to lock the bobbin 3 . Then, the thread 13 is passed through the shafts 4, 5 and 6 to ensure its centering relative to the longitudinal direction of the installation 1. The shafts 4, 5 and 6 are installed by means of sliding bearings on the frame 2.

Next, the thread 13 is passed through a drive pair of shafts 7, which unwind the thread 13 from the bobbin 3. In this case, one of the shafts 7 is a drive shaft connected to the electric motor, and the second shaft 7 is a driven shaft. Both shafts 7 are coated, for example, with rubber to prevent slipping of the thread 13.

After the drive pair of shafts 7, the thread 13 enters the triaxial cap 8, where the thread 13 is impregnated with a sizing, that is, a fiber bonding fiber, which provides a constant width of the thread 13 after plating. In this case, the cap can have any configuration used in the art. For example, the thread 13 can be passed over the first shaft, go under the second shaft, immersed in the sizing, and go over the third shaft, which can provide the removal of excess sizing by squeezing the thread.

After impregnation of the yarn 13 with a sizing, the yarn 13 enters the node 9 of the towing area. The assembly 9 of flattening the tow of the flat installation 1 comprises a base 14 fixed on the flat installation along the path of the tow 13 and having a lower surface and a substantially flat upper surface. In addition, the node 9 flattening harness contains a hole 15 for connecting a vacuum pump 16, made essentially in the middle of the lower surface of the base 14; as well as a groove 17 made in the upper surface of the base 14, extending essentially across the direction of passage of the bundle 13 and communicating with the hole 15 for connecting the vacuum pump 16. Also, the node 9 flattening the bundle contains two plates 18 having a protrusion 19, the shape of which corresponds to the shape of the groove 17. The plates 18 are mounted on the upper surface of the base 14 so that the protrusion 19 is located in the groove 17, and at least one plate 18 is movable along the groove 17 to adjust the distance between the plates 18, determining the width of the flat tow 13.

Thus, in order to lay the yarn 13 and obtain a bundle in the specified bundle flattening unit 9: set the set tow flattening width by moving at least one plate 18 to adjust the distance between the plates 18 of the flat knot 9; applying a vacuum to the flatting unit 9 with a vacuum pump 16 through an opening 15 for applying a vacuum; supplying the tow to the assembly site 9 along the path of the tow; and carry out the flattening of the bundle as it passes through the groove 17 of the flattening unit 9 due to the applied vacuum.

The movement of at least one plate 18 can be carried out either manually by the operator or by an electric motor. In this case, preferably, both plates 18 are movable.

The specified node 9 flattening the bundle may further comprise a connecting pipe 20, mounted in the hole 15, for connecting the pump 16, so that the pump can be carried at any desired distance from the node 9 flattening the bundle. For convenience of fastening of the bundle flattening unit 9, its base 14 may contain holes for accommodating fastening means for its attachment to the flat setting. Fastening means can be screws, bolts, latches, studs, etc.

The lower surface of the towing assembly 9 may have a substantially flat shape, although it is not limited to such a shape. That is, the lower surface of the bundle flattening assembly 9 may have any suitable shape for fixing in place, including curved, rounded, etc. In addition, a scale can be applied on the upper surface of the base 14 to conveniently set the distance between the plates 18, which determines the output size of the bundle, although the operation of setting a predetermined distance between the plates can be carried out in another way, for example, by using a caliper before starting the process of flattening the bundle.

Next, the flat tow is sent to the furnace 10 to dry the tow after flat. The evaporation of the sizing occurs at a temperature of about 120 ° C. After the bundle is dried in the furnace 10, it is wound using a drive pair of shafts 11, which are similar to the shafts 7 and compensate for the tension of the bundle after flattening, by a drive unit 12 on a bobbin or reel for finished products.

As shown, the flattening unit of the tow according to the present invention provides a quick and easy operation in which the tows quickly and simply undergo flattening operations.

Although the invention is shown and described with reference to some variants of its implementation, specialists in the art will understand that they can make various changes in form and detail without departing from the essence and scope of the invention.

Claims (12)

1. Site flattening harness for flat installation, containing:
- the base, mounted on a flat installation on the path of the tourniquet and having a lower surface and a substantially flat upper surface,
- a hole for connecting a vacuum pump, made essentially in the middle of the lower surface of the base,
- a groove made in the upper surface of the base, extending essentially across the direction of passage of the tow and communicating with the hole for connecting the vacuum pump,
- two plates having a protrusion, the shape of which corresponds to the shape of the groove, and mounted on the upper surface of the base so that the protrusion is placed in the groove, at least one plate is movable along the groove to adjust the distance between the plates, determining the width of the tow . 2. The node according to claim 1, in which the movement of at least one plate is carried out manually. 3. The node according to claim 1, in which the movement of at least one plate is carried out by an electric motor. 4. The node according to claim 1, in which both plates are made movable. 5. The node according to claim 1, additionally containing a connecting pipe mounted in the hole for connecting the pump. 6. The node according to claim 1, in which the base contains holes for accommodating fastening means for attaching it to the flat installation. 7. The node according to claim 6, in which the fastening means are bolts. 8. The node according to claim 1, in which the base contains fastening means for attaching it to the flat installation. 9. The node of claim 8, in which the fastening means are made in the form of latches. 10. The node according to claim 1, in which the lower surface has a substantially flat shape. 11. A sintering plant comprising a towing assembly according to any one of the preceding claims. 12. The method of flattening the tow in the flattening unit according to any one of claims 1 to 10, wherein:
- set a predetermined width of the flat tow by moving at least one plate to control the distance between the plates of the flat site,
- apply a vacuum to the flat site using a vacuum pump through the hole for applying a vacuum,
- serve the harness in the flat site along the path of the harness and
- carry out the flattening of the tow when it passes through the groove of the flattening unit.

Images