A sealing gasket for a melt spinning device

Abstract

The application discloses a sealing gasket for a melt spinning device, which comprises a ceramic cup body, a sealing gasket and a spinneret, a plurality of through holes are formed in the sealing gasket, a support net frame is arranged in the sealing gasket, the support net frame is fixedly connected with the ceramic cup body and the spinneret, the support net frame comprises a fixed frame and support ribs, the fixed frame is arranged in the edge part of the sealing gasket, the support ribs are arranged in the interval regions between adjacent through holes, the support ribs are fixedly connected with each other, and the support ribs are fixedly connected with the fixed frame. The sealing gasket for the melt spinning device is provided, the sealing gasket is transversely supported by the support net frame, the deviation of the interval regions on the sealing gasket is reduced, and misalignment between the through holes and corresponding melt flow channels is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to a sealing gasket for a melt spinning device. BACKGROUND

[0002] Generally, the melt spinning device is a device that extrudes a polymer melt from an elongated nozzle of a spinneret under pressure and then cools it into a filament.

[0003] The present application relates to a sealing gasket for a melt spinning device.

[0004] However, the spinneret is composed of a nozzle and a capillary tube, and the diameter of the capillary tube is smaller than the diameter of the flow regulating hole and the through hole, which is used to extrude a polymer melt into a filament through the capillary tube and the nozzle under pressure. Therefore, the sidewall of the through hole is easily affected by the pressure of the polymer melt. Due to the large capacity of the melt spinning device, multiple through holes are provided on the sealing gasket, and the spacing area between the through holes is easily offset under pressure, thereby forming a misalignment between the through hole and the corresponding melt flow path. In this case, there may be a problem of deviation in the extrusion pressure and the extrusion amount of the yarn from the melt flow path. SUMMARY

[0005] The present application relates to a sealing gasket for a melt spinning device.

[0006] To achieve the above-mentioned purpose, the technical solution of the present application is to design a sealing gasket for a melt spinning device, which comprises a ceramic cup body and a spinneret arranged in an upper and lower manner, a sealing gasket arranged between the ceramic cup body and the spinneret, a plurality of flow regulating holes provided on the ceramic cup body, a plurality of through holes provided on the sealing gasket, a plurality of spinneret holes provided on the spinneret, the flow regulating holes, the through holes and the spinneret holes being aligned one by one to form a melt flow path, a support mesh frame provided in the interior of the sealing gasket, the support mesh frame being fixedly connected with the ceramic cup body and the spinneret respectively, the support mesh frame comprising a fixed frame and a support rib, the fixed frame being arranged in the edge portion of the sealing gasket, the support rib being arranged in the spacing area between adjacent through holes, and the support rib being fixedly connected with the fixed frame.

[0007] Preferably, the edge of the fixed frame is provided with an ear, a pin hole is formed in the ear, the pin hole is aligned with the first positioning hole of the sealing gasket, the second positioning hole of the ceramic cup body and the third positioning hole of the spinneret, and a positioning pin is inserted into the pin hole, the first positioning hole, the second positioning hole and the third positioning hole.

[0008] Preferably, the bottom surface of the ceramic cup body is tightly attached to the top surface of the sealing gasket, and the bottom surface of the sealing gasket is tightly attached to the top surface of the spinneret.

[0009] Preferably, the shape of the support mesh frame is matched with the distribution position of the through hole on the sealing gasket, and the sealing gasket is surrounded outside the support mesh frame.

[0010] Preferably, the fixed frame, the support rib and the ear are integrally formed in a hard material.

[0011] The advantages and beneficial effects of the present application are as follows: a sealing gasket for a melt spinning device is provided, a support mesh frame is arranged inside the sealing gasket, the support mesh frame is fixedly connected with the ceramic cup body and the spinneret through the pin hole and the positioning pin, so that the support mesh frame can provide lateral support for the sealing gasket, the support rib of the support mesh frame is located in the interval region between adjacent through holes, which can prevent the interval region from being deviated due to the pressure of the polymer solution, and avoid the misalignment between the through hole and the corresponding melt flow path. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 is a schematic diagram of the present application.

[0013] Fig. 2 is a top view and a sectional view of the sealing gasket of the present application.

[0014] Fig. 3 is a split schematic diagram of the sealing gasket and the support mesh frame of the present application. EMBODIMENT

[0015] The specific embodiments of the present application will be further described below in conjunction with the drawings and examples. The following examples are only used to more clearly illustrate the technical solutions of the present application, and cannot be used to limit the protection scope of the present application.

[0016] The technical solutions of the specific embodiments of the present application are as follows:

[0017] As shown in Figs. 1 to 3 , a melt spinning device includes a ceramic cup body 1, a sealing gasket 2 and a spinneret 3, the inside of the melt spinning device is provided with the ceramic cup body 1, the lower part of the ceramic cup body 1 is provided with the spinneret 3 through the sealing gasket 2.

[0018] In the melt spinning device, the flow regulating hole 4 of the ceramic cup body 1, the through hole 5 of the sealing gasket 2 and the jet hole 6 of the spinneret 3 are aligned one by one to form a melt flow path, wherein the ceramic cup body 1, the sealing gasket 2 and the spinneret 3 are pressed together in the state of forming the melt flow path, and the positioning pin 10 is inserted into the first positioning hole 8 of the sealing gasket 2, the second positioning hole 7 of the ceramic cup body 1 and the third positioning hole 9 of the spinneret 3 to be pressed and assembled.

[0019] The inside of the sealing gasket 2 is provided with a support mesh frame 11, which is fixedly connected with the ceramic cup body 1 and the spinneret 3 respectively, and the support mesh frame 11 comprises a fixed frame 12 and a support rib 13, the fixed frame 12 is arranged in the edge part of the sealing gasket 2, the support rib 13 is arranged in the interval area 16 between adjacent through holes 5, the support ribs 13 are fixedly connected with each other, and the support rib 13 is fixedly connected with the fixed frame 12.

[0020] The edge of the fixed frame 12 is provided with an ear 14, the pin hole 15 is formed in the ear 14, the pin hole 14 is aligned with the first positioning hole 8 of the sealing gasket 2, the second positioning hole 7 of the ceramic cup body 1 and the third positioning hole 9 of the spinneret 3, and the pin hole 14, the first positioning hole 8, the second positioning hole 7 and the third positioning hole 9 are inserted with the positioning pin 10.

[0021] The shape of the support mesh frame 11 is matched with the distribution position of the through hole 5 on the sealing gasket 2, and the sealing gasket 2 is surrounded outside the support mesh frame 11.

[0022] The fixed frame 12, the support rib 13 and the ear 14 are integrally formed of hard material.

[0023] In the process of melt spinning, since the polymer melt is extruded into a filament under the action of pressure through the capillary tube 17 and the nozzle 18, the interval area 16 between the through holes 5 is easy to be offset under pressure, and the offset of the interval area 16 is particularly easy to occur at the beginning of melt spinning, at the moment when the high-pressure polymer melt passes through part of the through holes 5 on the sealing gasket 2, the high pressure of the polymer melt acts on the side wall of this part of the through holes 5, causing the interval area 16 to be offset under pressure, and causing the other part of the through holes 5 not passing through the polymer melt to be misaligned with the corresponding melt flow path. Therefore, the support mesh frame 11 is arranged inside the sealing gasket 2, the fixed frame 12 of the support mesh frame 11 is matched with the positioning pin 10 through the insertion of the pin hole 15, so that the support mesh frame 11 is fixedly connected with the ceramic cup body 1 and the spinneret 3, thereby the support mesh frame 11 strengthens and supports the sealing gasket 2 transversely, when the interval area 16 is affected by the pressure of the polymer melt, the support rib 13 of the support mesh frame 11 supports and fixes the interval area 16, which can prevent the offset of the interval area 16, thereby avoiding the misalignment between the through hole 5 and the corresponding melt flow path.

[0024] The above merely describes the preferred embodiments of the present application, and it should be pointed out that those skilled in the art can make several improvements and refinements without departing from the technical principles of the present application, and these improvements and refinements should also be considered as falling within the protection scope of the present application.

Claims

1. A sealing gasket for a melt spinning device, comprising a ceramic cup body and a spinneret arranged in an up-down manner, a sealing gasket is arranged between the ceramic cup body and the spinneret, a plurality of rectifying holes are arranged on the ceramic cup body, a plurality of through holes are arranged on the sealing gasket, and a plurality of spinneret holes are arranged on the spinneret, the rectifying holes, the through holes and the spinneret holes are aligned one by one to form a melt flow path, characterized in that: The inner part of the sealing gasket is provided with a support net frame, which is fixedly connected with the ceramic cup body and the spinneret respectively, the support net frame comprises a fixed frame and support ribs, the fixed frame is arranged in the edge part of the sealing gasket, the support ribs are arranged in the interval area between adjacent through holes, the support ribs are fixedly connected with each other, and the support ribs are fixedly connected with the fixed frame; ​ The edge of the fixed frame is provided with an ear, a pin hole is formed in the ear, the pin hole is aligned with the first positioning hole of the sealing gasket, the second positioning hole of the ceramic cup body and the third positioning hole of the spinneret, and a positioning pin is inserted into the pin hole, the first positioning hole, the second positioning hole and the third positioning hole.

2. The sealing gasket for a melt spinning device according to claim 1, wherein The bottom surface of the ceramic cup body is tightly attached to the top surface of the sealing gasket, and the bottom surface of the sealing gasket is tightly attached to the top surface of the spinneret.

3. The sealing gasket for a melt spinning device according to claim 2, wherein The shape of the support net frame is matched with the distribution position of the through holes on the sealing gasket, and the sealing gasket is surrounded outside the support net frame.

4. The sealing gasket for a melt spinning device according to claim 3, wherein The fixed frame, the support ribs and the ear are integrally formed in a hard material.

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