Spinneret cap
By designing the isosceles triangle structure of grooves and multiple spray holes on the spinneret, the problem of insufficient spinneret stability and accuracy of the existing spinneret cap is solved, and higher spinneret stability and spinning are achieved quality.
Patent Information
- Application Number
- CN202420233876.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-31
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-01-31
AI Technical Summary
The existing spinnerets have shortcomings in spinneret stability and processing accuracy, resulting in insufficient spinning quality and low accuracy.
A spinneret cap is designed, the outer side wall of the top outer wall of the cap body is formed with a flange and a groove is opened. A plurality of spray holes are provided at the bottom of the groove, including three first guide surfaces and three second guide surfaces. The spinneret holes with isosceles triangle structure are formed, and the fluid is guided through these guiding surfaces, causing the fluid to gradually narrow and spray out the filamentous fluid through the spinneret holes, improving the spinneret stability.
By setting up grooves and multiple spray holes, the guide surface of the isosceles triangle structure allows fluid to pass smoothly, which improves the stability and accuracy of the spinning process and improves the spinning quality.
Smart Images
Figure CN222160483U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of spinneret caps, in particular to a spinneret cap. Background Art
[0002] Spinneret, a precision part with micropores or slits for extruding fiber stock solution on a dry and wet spinning machine. There are many types of spinnerets in the world. Japan's Tanaka Precious Metals Co., Ltd. and Tainaika Co., Ltd. develop more than 1,000 spinnerets of different shapes of special-shaped fibers every year; DuPont of the United States can manufacture triangular, four-leaf and five-leaf spinnerets using the puffing adhesion technology; Germany's Enka company's spinneret production technology is in a leading position internationally; and domestic spinnerets, although there are also spinnerets produced in China, the spinneret's spinning stability and processing accuracy are far behind those of foreign countries. The publication number is CN103993367B, which discloses a spinneret for high-speed dry spinning, which contains a circular fixed gasket, a multi-layer filter cloth, a deflector, and a special-shaped spinneret from top to bottom. The spinneret shell surrounds the lower end of the inlet device of the spinning solution, the fixed gasket, the multi-layer filter cloth, the deflector, and the special-shaped spinneret on its inner side and fixes them. The multi-layer filter cloth can be composed of a layer of flannel and three continuous layers of high-density nylon fabric; the special-shaped spinneret has horizontal folds, vertical folds, and a spinneret body, and the spinneret body has multiple spinnerets; the number of spinnerets is 200-2000, and the density of the spinnerets near the center is greater than the density of the surrounding spinnerets; the inner side of the deflector is in the shape of an inverted truncated cone side surface, and the outer side is in the shape of a cylindrical cylindrical surface with annular burrs; the truncated cone vertex angle is 20-30 degrees. The local density and number of spinnerets of the utility model are increased, and the spinning speed and production capacity are greatly improved; the pressure distribution of the spinneret liquid in the spinneret cap is uniform and stable, which also improves the stability of the spinning process and the quality of spinning. The spinning quality of the spinneret cap is not stable enough, and the processing accuracy is low. Utility Model Content
[0003] In view of the deficiencies in the prior art, the utility model aims to provide a spinning cap with stable spinning and high precision.
[0004] To achieve the above-mentioned purpose, the solution provided by the utility model is: a spinneret cap, comprising a cap body, a flange is formed on the outer side wall of the top of the cap body, the cap body is provided with a groove, a plurality of ejection holes are provided at the bottom of the groove, the ejection holes include three first guide surfaces and three second guide surfaces, the three first guide surfaces are arranged obliquely downward, the sides of the three first guide surfaces are connected in sequence, the bottoms of the three first guide surfaces are close to each other to form a spinneret hole, the tops of every two adjacent first guide surfaces are connected to the second guide surface, and the second guide surface is an isosceles triangle structure.
[0005] The beneficial effects of the utility model are as follows: the stability of spinning is improved. The spinning cap is provided with a groove and a plurality of ejection holes in the groove to receive the fluid. Then the ejection holes are provided with three first guide surfaces and three second guide surfaces to form the spinning holes. The three first guide surfaces and three second guide surfaces are used to guide the movement of the fluid, so that the fluid gradually narrows after entering the ejection holes, and finally the filamentary fluid is ejected through the spinning holes. In this way, the fluid can smoothly pass through the ejection holes and the filamentary fluid can be smoothly ejected, so that the spinning process has high stability.
[0006] Furthermore, the first guide surface includes a first guide portion and a second guide portion, the second guide portion and the first guide portion are arranged one above the other, the bottoms of the three first guide portions are close to each other and form a spinneret, and the second guide surface is connected between every two adjacent second guide portions.
[0007] Furthermore, the first guiding surface is an isosceles triangle structure, and the second guiding surface is a rectangular structure. After the utility model adopts the above structure, it can guide the flow of fluid.
[0008] Furthermore, the cross section of the spinneret hole is a triangular structure.
[0009] Furthermore, the cross-sectional area of the spinneret hole gradually decreases from top to bottom. The utility model adopts the above structure to realize the spraying of filamentous fluid. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 The overall structure of the utility model is three-dimensional Figure 1 .
[0011] Figure 2 The overall structure of the utility model is three-dimensional Figure 2 .
[0012] Figure 3 It is a top view of the spray hole of the utility model.
[0013] Figure 4 For the utility model Figure 3 Middle AA section view.
[0014] Figure 5 The composition detection of three points of the spinning cap of the utility model Figure 1 .
[0015] Figure 6 The composition detection of three points of the spinning cap of the utility model Figure 2 .
[0016] Figure 7 The hardness change of the ejection hole of the utility model Figure 1 .
[0017] Figure 8 The hardness change of the ejection hole of the utility model Figure 2 .
[0018] Among them, 1 is the cap body, 11 is the flange, 12 is the groove, 2 is the ejection hole, 21 is the first guide surface, 211 is the first guide part, 212 is the second guide part, 22 is the second guide surface, and 23 is the spinneret hole. DETAILED DESCRIPTION
[0019] The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0020] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0021] See attached Figure 1 To Attachment Figure 4 As shown, a spinneret includes a cap body 1, a flange 11 is formed on the outer side wall of the top of the cap body 1, a groove 12 is formed on the cap body 1, and a plurality of ejection holes 2 are formed at the bottom of the groove 12. The ejection holes 2 include three first guide surfaces 21 and three second guide surfaces 22. The three first guide surfaces 21 are arranged to be inclined downward, and the sides of the three first guide surfaces 21 are connected in sequence. The bottoms of the three first guide surfaces 21 are close to each other to form a spinneret 23, and the second guide surface 22 is connected between the tops of every two adjacent first guide surfaces 21, and the second guide surface 22 is an isosceles triangle structure.
[0022] In this embodiment, the first guide surface 21 includes a first guide portion 211 and a second guide portion 212. The second guide portion 212 and the first guide portion 211 are arranged up and down. The bottoms of the three first guide portions 211 are close to each other and form a spinneret hole 23. The second guide surface 22 is connected between every two adjacent second guide portions 212.
[0023] In this embodiment, the first guide surface 21 is in an isosceles triangle structure, and the second guide surface 22 is in a rectangular structure.
[0024] In this embodiment, the cross section of the spinneret hole 23 is a triangular structure.
[0025] In this embodiment, the cross-sectional area of the spinneret hole 23 gradually decreases from top to bottom.
[0026] In this embodiment, the inclination angle of the first guide surface 21 is 30°, the inclination angle of the second guide surface 22 is 20°, and the inclination angle of the spinneret hole 23 is 10°.
[0027] The production process of the spinneret of this embodiment comprises the following steps:
[0028] S1. Pour molten steel into an ingot mold, let it stand for a certain period of time, condense to form an ingot, take out the ingot, and then forge the steel strip. Then, roll the ingot into a sheet to form a steel sheet. After the steel sheet is formed, pickling is performed on the steel sheet.
[0029] S2. Punch the steel sheet in step S1 into a hat blank, perform a first inspection on the size of the hat blank, then place the hat blank into a corresponding mold and clamp it to fix it in place.
[0030] S3. Punch the hat blank positioned in step S2 for the first time, polish it for the first time after the first punching, and then perform laser drilling. After laser drilling, check the size of the hat blank for the second time, polish it for the second time, perform fine electric spark drilling, and finally put it into the shaping mold to perform the first size finishing on the hat blank.
[0031] S4. The cap blank after finishing in step S3 is polished for the third time, then laser punched, and then the size of the cap blank is finished for the second time. After the second size finishing, the cap blank is inspected for the third time, and finally the cap blank is polished by abrasive flow to obtain the spinneret of this embodiment.
[0032] When the spinneret of this embodiment is used for spinning, the fluid enters the groove 12 and then flows into the multiple ejection holes 2 respectively. When in the ejection holes 2, after being guided by the three first guide surfaces 21 and the three second guide surfaces 22, it flows into the spinneret hole 23 and ejects the filamentary fluid through the spinneret hole 23.
[0033] In this embodiment, the element composition of the spinneret material of this embodiment includes: C element, Si element, Cr element, Fe element, Ni element, and Ta element.
[0034] Among them, Ta element is used. Due to its high melting point, low hardness, excellent conductivity, good biocompatibility, low thermal expansion coefficient, little effect of hot processing on precision, high ductility, excellent cold processing performance, can be drawn into thin foil with filaments, and has excellent high temperature resistance, corrosion resistance, and chemical stability.
[0035] Specifically, the element composition of the spinneret material includes: 2.88% C element, 0.81% Si element, 18.84% Cr element, 65.60% Fe element, 11.86% Ni element, and 1.00% Ta element.
[0036] From the above table, with the attached Figure 5 To Attachment Figure 8 It was found that the hardness of the prepared spinneret increased gradually from the upper surface to the lower surface, and the hardness value remained constant within the range of ~600 μm of the lower surface, the hardness of the upper surface was ~220 HV, and the hardness of the lower surface was ~310 HV.
[0037] The embodiments described above are only preferred embodiments of the present invention and do not limit the present invention in any form. Any technician familiar with the field can use the above disclosed technical content to make more possible changes and modifications to the technical solution of the present invention without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, all equivalent and equivalent changes made according to the idea of the present invention without departing from the content of the technical solution of the present invention should be included in the protection scope of the present invention.
Claims
1. A spinning cap, comprising a cap body (1), characterized in that: The outer side wall of the top of the cap body (1) is formed with a flange (11), the cap body (1) is provided with a groove (12), the bottom of the groove (12) is provided with a plurality of ejection holes (2), the ejection holes (2) include three first guide surfaces (21) and three second guide surfaces (22), the three first guide surfaces (21) are arranged to be inclined downward, the sides of the three first guide surfaces (21) are connected in sequence, the bottoms of the three first guide surfaces (21) are close to each other and form a spinneret hole (23), the tops of every two adjacent first guide surfaces (21) are connected to the second guide surface (22), and the second guide surface (22) is an isosceles triangle structure.
2. A spinning cap according to claim 1, characterized in that: The first guide surface (21) comprises a first guide portion (211) and a second guide portion (212); the second guide portion (212) and the first guide portion (211) are arranged one above the other; the bottoms of the three first guide portions (211) are close to each other to form a spinneret hole (23); and the second guide surface (22) is connected between every two adjacent second guide portions (212).
3. A spinning cap according to claim 2, characterized in that: The first guide surface (21) is in the form of an isosceles triangle structure, and the second guide surface (22) is in the form of a rectangular structure.
4. A spinning cap according to claim 3, characterized in that: The spinneret hole (23) has a triangular cross-section.
5. A spinning cap according to claim 4, characterized in that: The cross-sectional area of the spinneret hole (23) gradually decreases from top to bottom.