JPH0639725B2 - Heat treatment equipment for multiple yarns - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to a heat treatment apparatus for heat-treating a plurality of yarns with a heated gas such as steam.

[Prior art]

Conventionally, in order to heat-treat a multi-filament spun yarn spun from a large number of weights, generally, a heat treatment area is provided independently for each weight so that variations in heat treatment do not occur between the weights. Therefore, every time the number of yarns to be heat treated changes, it is troublesome that the number of weights of the heat treatment apparatus used for the treatment needs to be changed.

[Object of the Invention] In view of the above problems, an object of the present invention is to provide a multi-thread yarn that can be heat-treated with one heat-treatment device so that variations do not occur between the yarns even if the number of yarns to be treated changes. The purpose is to provide a heat treatment device for use.

[Structure of Invention]

In the heat treatment apparatus for multiple yarns of the present invention to achieve the above object, the heat treatment region inside the heating cylinder is formed into a flat cross section in which a plurality of yarns can run in parallel, and both ends in the yarn running direction. A yarn inlet and a yarn outlet are provided in a portion, a heat insulating housing or a heat insulating jacket of a heat insulating material is arranged outside the heating cylinder so as to surround at least the yarn outlet inside, and the flattened portions of the heat treatment region facing each other. Heating gas outlets on at least two regions on the yarn inlet side of the two inner surfaces in the same direction, and a slit-shaped heating communicating with the yarn outlet at the end of the yarn outlet and connected to the exhaust means. A gas suction port is provided over the entire width in the flat direction of the heat treatment region, and the heating gas that is jetted from the heating gas outlet and forcibly sucked into the heating gas suction port is applied to the plurality of yarns running in parallel. Plane-symmetric Is characterized in that the Ten like flow.

Example of Invention

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

In the figure, reference numeral 1 is a heating tube having a flat rectangular tube shape, and a yarn inlet 8 and a yarn outlet 9 each having a flat cross section are provided in the upper and lower portions, and in particular, the yarn inlet 8 has a slit shape with a narrowed cross section. ing. The inside of the heating cylinder 1 forms a heat treatment area 2 for heat-treating the yarn Y, and the outside is covered with a housing 4 of a heat insulating material on both side surfaces via heating gas chambers 3 and 3, respectively. The heat treatment area 2 formed inside the heating cylinder 1 is
The flat is a rectangular cross section, and a plurality of (four in the example of the figure) yarns to be heat-treated along the flat direction can run Y in parallel.

On both sides of the inner side surface of the heating cylinder 1 along the flat direction, heating gas outlets 5 communicating with the heating gas chamber 3 are provided in multiple stages from the upper part to the lower part. The heated gas outlet 5 may be provided with a large number of holes, or may be provided with a wire mesh or the like. The heated gas outlet 5 needs to be provided in at least one stage above at least the yarn inlet side of the heating cylinder 1, but it is preferable to provide a plurality of stages as described above.

The rectifying chamber 6 is provided above the heated gas chambers 3 on both sides, respectively.
6 are provided and are respectively connected to supply pipes 7, 7 to which heating gas such as superheated steam or heating air is supplied. Each of the straightening chambers 6 is provided with straightening plates 6a, 6a along a flat opening above the heating gas chamber 3, and the heated gas is evenly distributed and supplied to the flat opening.

On the yarn outlet 9 side of the heating cylinder 1, slit-shaped heating gas suction ports 10, 10 are provided along the inner surfaces on both sides, and each heating gas suction port 10 is forcedly sucked by a blower (not shown) or the like. It is connected to the suction pipe 11 which is performing.
Each heated gas suction port 10 has a straightening plate 10a,
Through this straightening plate 10a, the heated gas is sucked in a curtain shape that is evenly dispersed in the longitudinal direction of the slit. In addition, each heating gas suction port 10 is provided with a wire mesh-shaped resistor 15 along the longitudinal direction of the slit so as to increase the uniformity of the flow velocity.

Since the heated gas suction ports 10 and 10 are slit-shaped, they act so as to make the suction flow velocity equal in the vicinity of each yarn. Further, although it is preferable to provide the wire net-like low antibody 15, it may be omitted.

According to the above-described heat treatment apparatus, since a plurality of yarns Y are run in parallel in the heat treatment region 2 having a flat cross section, the number of yarns can be changed arbitrarily by changing the interval between the yarns. . Further, the heated gas blown out from the heated gas outlets 5 on both side surfaces of the heating cylinder 1 is forcibly sucked from the slit-shaped heated gas suction ports 10 on both lower side surfaces to generate a curtain-shaped heated gas flow in the heat treatment area 2. Form. The curtain-shaped heated gas flow heats the plurality of yarns Y running from the yarn inlet 8 to the yarn outlet 9 while contacting the yarns Y so as to be plane-symmetrical from both side faces thereof. In addition, the yarn outlet 9
On the side, the heated gas (steam) after completion of the heat treatment flows, so that it is likely to be accompanied by drainage. However, in the above device, since the yarn outlet 9 is arranged so as to surround the heat insulating housing 4 of the heat insulating material, dew condensation is less likely to occur near the yarn outlet 9 and the heated gas suction port 10 positively prevents the dew condensation. Since it is sucked, even if a small amount of drain is accompanied in the heated gas, dew condensation at the yarn outlet 9 does not adversely affect the yarn. Therefore, the plurality of yarns are heat-treated so as to be even with each other, and there is no variation between the yarns.

FIG. 4 shows another embodiment of the present invention. In this embodiment, the heating chamber 3 and the heat insulating material 4 in the above embodiment are used.
A heat insulating jacket 12 is provided between the heat insulating layer and the heat insulating jacket 12 to improve heat insulating efficiency by double heat insulating. The heating medium supply ports 13, 13 and the heating medium discharge port 14, which surround the heating gas supply pipes 7, 7 and the suction pipes 11, 11 on the upper and lower side surfaces of the heat insulation jacket 12, respectively. 14
Is provided.

Further, FIGS. 5 and 6 show another embodiment of the yarn inlet portion in which the heat treatment by the heating cylinder is performed more efficiently. A plurality of running yarns are provided along the slit-shaped yarn inlet 8. The diaphragm plates 16a and 16b that can be opened and closed are provided in accordance with the arrangement of the row Y. The diaphragm plates 16a and 16b are
Each has a notch 17 corresponding to the number of running yarns, and when both diaphragm plates 16a and 16b are united, the notch 1
7 serves as a squeezing guide corresponding to the traveling yarns, and prevents the heated gas from escaping from the slit-shaped yarn inlet 8 to the outside.

The diaphragm plates 16a and 16b are arranged on the upper part of the heating cylinder main body and are separated from each other in the horizontal direction as shown in FIG. 6B when the thread is hooked, or the mating surface side is moved upward as shown in FIG. 6C. After the thread is hooked, the thread is opened to be in the open state, and after the thread is hooked, the thread is processed in the closed state as shown in FIG. 6A.

〔The invention's effect〕

As described above, in the heat treatment apparatus for multiple yarns of the present invention, the heat-retaining housing or the heat-retaining jacket is arranged outside the heating cylinder having the flattened cross-section heat-treating region so that at least the yarn outlet is surrounded inside, and the heat treatment is performed. A slit for communicating with the yarn outlet at the end of the yarn outlet and communicating with the exhaust means is provided on at least two regions on the inner surface of the region facing each other in the flat direction in the region of the yarn inlet side. Since the shaped heating gas suction port is provided over the entire width of the heat treatment area in the flat direction, the heating gas jetted from the heating gas outlet to the heating gas suction port by this configuration is forced to be sucked into the heating gas suction port. In order to create a curtain-like flow that is plane-symmetric with respect to multiple yarns, the heated gas forms a curtain in the heat treatment area and contacts multiple yarns from both sides. Without the yarn can be uniformly heat treated to no variation of.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of a heat treatment apparatus according to an embodiment of the present invention, FIG. 2 is a plan view of the same, FIG. 3 is a sectional view taken along the line III--III of FIG. 1, and FIG. FIG. 5 is a vertical cross-sectional view of a heat treatment apparatus according to another embodiment, FIG. 5 is a plan view of the heat treatment apparatus showing an embodiment in which a diaphragm plate is arranged at the yarn inlet portion, and FIGS. The operation of the diaphragm plate arranged in the figure will be described. FIG. 6A shows a closed state, and FIG.
C is an explanatory view showing an open state, respectively. 1 ... Heating cylinder, 2 ... Heat treatment area, 3 ... Heating gas chamber,
4 ... Housing, 5 ... Heating gas outlet, 7 ... Supply pipe, 8 ... Thread inlet, 9 ... Thread outlet, 10 ... Heating gas suction port, 11 ... Suction tube, 12 ... Heat insulation jacket .

Claims (1)

[Claims] 1. A heat treatment area (2) inside a heating cylinder (1) is formed in a flat cross section in which a plurality of yarns can run in parallel, and a yarn inlet (2) is provided at both ends in the yarn running direction. 8) and a thread outlet (9) are provided, and a heat insulating housing (4) or a heat insulating jacket (12) is provided outside the heating cylinder (1) so that at least the thread outlet (9) is surrounded inside. The heated gas outlets (5) are provided at least on the yarn inlet (8) side regions, respectively, on the two inner surfaces of the heat treatment region (2) facing each other in the flat direction, and the yarn outlets (9)
A slit-shaped heated gas suction port (10) communicating with the yarn outlet (9) at the end of the heat treatment region (2)
The heating gas is provided over the entire width in the flat direction of the heating gas and is forcibly sucked into the heating gas suction port (10) by being jetted from the heating gas outlet port (5), with respect to the plurality of yarns running in parallel. A heat treatment apparatus for multiple yarns, which is characterized by a curtain-shaped flow with plane symmetry.