Method for manufacturing a funnel and a core thereof

Abstract

This application discloses a method for preparing a funnel and its core. A concave surface and a contact surface are machined on a workpiece. Two workpieces are connected so that their corresponding contact surfaces are sealed together, and the concave surfaces of the workpieces form a slit. Using the slit as a reference, a contour surface is machined on each workpiece to obtain an intermediate structure. The contour surface, contact surface, and concave surface together form the intermediate structure, and the two connected intermediate structures form the core. The machining cost of the concave surface and contact surface is much lower than that of long holes or slits, and no custom machining tools are required, effectively reducing the preparation cost of the core and funnel. The straightness of the concave surface and contact surface can be guaranteed, resulting in good straightness and linearity of the core and slit. The quality of the filament bundle formed through the slit is better, improving textile efficiency. This method, to some extent, solves the problems of high core preparation cost and insufficient core quality affecting textile efficiency.

Description

Technical Field

[0001] This application belongs to the field of wet spinning funnel technology, and particularly relates to the preparation method of the funnel and its core. Background Technology

[0002] A spinning machine is the equipment used in wet spinning. Some spinning machines require a funnel component to form the filament bundle. The funnel consists of a bath tray and a core, both of which have a hollowed-out structure in the center. The filament bundle and pressurized water pass through a sloping central slit in the bath tray and enter a narrow slit in the center of the core. The filament bundle and pressurized water then flow out through the slit, thus forming the filament bundle.

[0003] In existing technologies, the core is a one-piece molded structure with deep and narrow slits, and the surface precision requirements for these slits are high. During core fabrication, a tool with a large aspect ratio is needed to machine the slits into the workpiece. On the one hand, using a tool with a large aspect ratio requires customization, increasing the core fabrication cost; on the other hand, using a tool with a large aspect ratio makes it difficult to guarantee the flatness and straightness of the slits. This affects the quality of the resulting core and thus reduces textile efficiency. Summary of the Invention

[0004] This application aims to at least partially address the problems of high core preparation costs and insufficient core quality affecting textile efficiency. To this end, this application provides a funnel and a method for preparing its core.

[0005] This application provides a method for preparing a core, applied to the preparation of a funnel core, wherein the core has a slit penetrating the core; the preparation method includes:

[0006] A concave surface and a contacting plane are machined on the workpiece. The ratio of the width to the height of the concave surface is 10-50. The concave surface penetrates the workpiece along the width direction of the concave surface. The two contacting planes are distributed on both sides of the concave surface along the length direction of the concave surface.

[0007] The two workpieces are connected so that the corresponding contact planes of the workpieces are sealed and fitted together, and the corresponding concave surfaces of the workpieces form the slit.

[0008] Using the slit as a reference, a contour surface is machined on each workpiece to obtain an intermediate structure. The contour surface, the contact plane, and the recessed surface enclose the intermediate structure, and two connected intermediate structures form the core.

[0009] In some embodiments provided in this application, the "machined concave surfaces and contact surfaces on the workpiece" includes:

[0010] The workpiece is milled to create the recessed surface;

[0011] The workpiece is surface-ground to machine the contact surface.

[0012] In some embodiments provided in this application, the machining reference surface of the recessed surface is the same as the machining reference surface of the contact surface.

[0013] In some embodiments provided in this application, the step of "connecting the two workpieces so that the contact planes corresponding to the workpieces are sealed and fitted together, and the recessed surfaces corresponding to the workpieces form the slit" includes:

[0014] Using the recessed surface as a reference surface, spaced connecting holes and pin holes are machined on the workpiece;

[0015] Fasteners are passed through the connecting holes of the two workpieces to connect the two workpieces, and the corresponding recessed surfaces of the workpieces form the slit.

[0016] In some embodiments provided in this application, the fastener includes a threaded post and a connecting pin, and the threaded post and the workpiece are rigidly connected.

[0017] In some embodiments provided in this application, the contour surface includes a curved surface and a transition surface. Along the length direction, the curved surface is connected to two contact planes. Along the width direction, the two ends of the concave surface are connected to the curved surface through two transition surfaces respectively. The step of "processing a contour surface on each workpiece based on the slit to obtain an intermediate structure" includes:

[0018] Using the slit as a reference, the curved surface and the transition surface are sequentially machined on the workpiece.

[0019] In some embodiments provided in this application, the phrase "using the slit as a reference, sequentially machining the curved surface and the transition surface on the workpiece" includes:

[0020] Using the slit as a reference, the workpiece is machined by surface grinding to create the curved surface and the transition surface.

[0021] This application provides a funnel, comprising:

[0022] A bath tray has a central seam and a guide surface. The two ends of the central seam are an inlet and an outlet, respectively. The guide surface surrounds the central seam and is connected to the inlet.

[0023] The core includes two opposing intermediate structures with a slit formed between them. The slit communicates with the outlet end, and a high-pressure water channel is formed between the outlet end and the slit.

[0024] The intermediate structure includes a concave surface, two contact planes, and a contour surface. The width-to-height ratio of the concave surface is 10-50. The concave surface extends through the intermediate structure along its width. The two contact planes are distributed on both sides of the concave surface along its length. The contour surface, the contact planes, and the concave surface together form the intermediate structure.

[0025] The contact surfaces of the two connected intermediate structures are used for sealing and fitting, and the recessed surfaces of the two connected intermediate structures are used to form the slit.

[0026] In some embodiments provided in this application, the guide surface is an annular curved surface surrounding the central seam, and the slope of the annular curved surface decreases from the center of the annular curved surface outwards.

[0027] In some embodiments provided in this application, the high-pressure water channel surrounds the annular channel of the central slit and the slit, and the cross-section of the annular channel is two parallel inverted conical tubes.

[0028] The embodiments of this application have at least the following beneficial effects:

[0029] When machining a funnel-shaped core with a through-hole slit, concave and convex surfaces are machined on the workpieces. Two workpieces are connected, ensuring a tight seal between their corresponding convex surfaces, and the concave surfaces form the slit. Using the slit as a reference, a contour surface is machined on each workpiece to obtain an intermediate structure. The contour surface, convex surface, and concave surface together form the intermediate structure, and the two connected intermediate structures form the core. The machining cost of the concave surface and convex surface is significantly lower than that of long holes or slits, and the width-to-height ratio of the concave surface is 10-50. When the width-to-height ratio of the concave surface is within this range, the resulting slit requires custom-made tools for machining using traditional one-piece machining, resulting in high overall manufacturing costs. Converting the slit into a concave surface eliminates the need for custom-made tools, effectively reducing the manufacturing costs of the core and funnel. The straightness of the concave surface and convex surface is guaranteed, resulting in better straightness and linearity of the formed core and slit. The quality of the filament bundle formed through the slit is better, improving textile efficiency. This can, to some extent, solve the problems of high core preparation costs and poor core quality that affect textile efficiency. Attached Figure Description

[0030] Figure 1 A schematic diagram of the structure of a funnel provided in this application.

[0031] Figure 2 A flowchart illustrating a core fabrication method provided in this application.

[0032] Figure 3A side view of a core provided for this application.

[0033] Figure 4 A top view of the intermediate structure provided in this application.

[0034] Explanation of reference numerals in the attached drawings: 1. Bath tray; 11. Center seam; 12. Guide surface; 2. Core; 21. Intermediate structure; 211. Recessed surface; 212. Contact plane; 213. Contour surface; 2131. Transition surface; 2132. Curved surface; 214. Connecting hole; 215. Pin hole; 22. Slit; 3. High-pressure water channel. Detailed Implementation

[0035] To enable those skilled in the art to better understand this application, the technical solution of this application will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Figure 1 A schematic diagram of the structure of a funnel provided in this application is shown below. Figure 1 As can be seen, this application provides a method for preparing a core, which is used to prepare the core of a funnel, and the core has a slit that penetrates the core. Figure 2 A flowchart of a core fabrication method provided in this application is shown below. Figure 2 The core preparation method includes:

[0037] S101: A recessed surface and a contacting surface are machined on the workpiece. The ratio of the width to the height of the recessed surface is 10-50. The recessed surface penetrates the workpiece along the width direction of the recessed surface. The two contacting surfaces are distributed on both sides of the recessed surface along the length direction of the recessed surface.

[0038] S102: Connect two workpieces so that the corresponding contact surfaces of the workpieces are sealed and fitted together, and the corresponding concave surfaces of the workpieces form a narrow slit.

[0039] S103: Using the slit as a reference, a contour surface is machined on each workpiece to obtain an intermediate structure. The contour surface, contact plane, and concave surface enclose the intermediate structure, and two connected intermediate structures form the core.

[0040] When machining a funnel-shaped core with a through-hole slit, concave and convex surfaces are machined on the workpieces. Two workpieces are connected, ensuring a tight seal between their corresponding convex surfaces, and the concave surfaces form the slit. Using the slit as a reference, a contour surface is machined on each workpiece to obtain an intermediate structure. The contour surface, convex surface, and concave surface together form the intermediate structure, and the two connected intermediate structures form the core. The machining cost of the concave surface and convex surface is significantly lower than that of long holes or slits, and the width-to-height ratio of the concave surface is 10-50. When the width-to-height ratio of the concave surface is within this range, the resulting slit requires custom-made tools for machining using traditional one-piece machining, resulting in high overall manufacturing costs. Converting the slit into a concave surface eliminates the need for custom-made tools, effectively reducing the manufacturing costs of the core and funnel. The straightness of the concave surface and convex surface is guaranteed, resulting in better straightness and linearity of the formed core and slit. The quality of the filament bundle formed through the slit is better, improving textile efficiency. This can, to some extent, solve the problems of high core preparation costs and poor core quality that affect textile efficiency.

[0041] Furthermore, by adopting the above structure, if one of the intermediate structures forming the core experiences significant wear, another intermediate structure can be used to replace the worn one, rather than scrapping the entire core. This approach is more energy-efficient and environmentally friendly, and has lower maintenance costs.

[0042] It should be noted that the width-to-height ratio of the concave surface is 10-50, specifically 10:1-50:1. Similar to the depth-to-width ratio of the slit mentioned below, this will not be discussed further.

[0043] In some embodiments provided in this application, the width of the slit on the prepared core can be approximately 0.5 mm, and the depth of the slit can be 200–4000 mm. This provides good general performance. It should be noted that the length of the recessed surface corresponds to the length of the slit, the width of the recessed surface corresponds to the depth of the slit, and the height of the recessed surface is half the width of the slit. The ratio of the slit depth to the slit width is 5:1–25:1.

[0044] In some embodiments provided in this application, step S101, "machines a contacting recessed surface and a contacting flat surface on the workpiece," includes:

[0045] Milling the workpiece to create a concave surface. Surface grinding the workpiece to create a contact surface.

[0046] Milling of concave surfaces offers a faster machining speed and better quality, improving the quality of the slits formed by the mating of concave surfaces. The contact surfaces are prepared using surface grinding, which effectively improves the machining quality of the contact surfaces.

[0047] In some embodiments provided in this application, the machining reference surface of the recessed surface is the same as the machining reference surface of the contact surface. This can improve the relative positional accuracy between the recessed surface and the contact surface.

[0048] In some embodiments provided in this application, the machining reference surfaces of the recessed surface and the contact surface may be different. This application does not impose any limitations on this.

[0049] In some embodiments provided in this application, a machining datum may be provided on the workpiece before machining the recessed surface and the contact plane. This machining datum can serve as the machining reference for the recessed surface and the contact plane, improving quality. The machining datum can be a machining datum surface or a machining datum line. This application does not impose any limitations on this.

[0050] In some embodiments provided in this application, the contact surface can be wire-machined and then the recessed surface can be machined. This application does not limit this.

[0051] In some embodiments provided in this application, S102, "connecting two workpieces so that the corresponding contact planes of the workpieces are sealed and fitted together, and the corresponding concave surfaces of the workpieces form a slit", includes:

[0052] Using the concave surface as a reference surface, spaced connecting holes and pin holes are machined on the workpiece.

[0053] Fasteners are passed through the connecting holes of the two workpieces to connect them, and the corresponding concave surfaces of the workpieces form a slit.

[0054] The connecting hole and pin hole, when used with fasteners, serve to position the components and ensure a tight connection. When the connecting hole and pin hole are aligned, the recessed surface forms a narrow slit, facilitating the assembly and disassembly of the core.

[0055] In some embodiments provided in this application, the fastener includes a threaded post and a connecting pin, with a rigid connection between the threaded post and the workpiece. This improves the connection strength between intermediate structures and reduces the possibility of leakage from the contact planes.

[0056] In some embodiments provided in this application, both the connecting hole and the pin hole can be distributed on both sides of the recessed surface along its length. This facilitates installation and provides good strength.

[0057] Figure 3 A side view of a core provided in this application, with reference to Figure 3 The core 2 has a connecting hole 214 and a pin hole 215 on its middle structure 21.

[0058] In some embodiments provided in this application, the two intermediate structures may also be welded together for fixation. This application does not impose any limitations on this.

[0059] In some embodiments provided in this application, the contour surface includes a curved surface and a transition surface. Along the length direction, the curved surface is connected to two contact planes, and along the width direction, the two ends of the concave surface are connected to the curved surface through two transition surfaces respectively. In step SS103, "using the slit as a reference, machining a contour surface on each workpiece to obtain an intermediate structure" includes: using the slit as a reference, sequentially machining a curved surface and a transition surface on the workpiece.

[0060] After ensuring the dimensions and precision of the slit, curved surfaces and transition surfaces are machined using the slit as a reference. This ensures the relative positional accuracy between the contour surface of the intermediate structure and the slit, facilitating the connection and installation between the core and related structures.

[0061] Using the slit as a reference, the workpiece can be machined with the center of the slit or the concave surface as a reference, and this application does not limit this.

[0062] In some embodiments provided in this application, "using the slit as a reference, sequentially machining curved surfaces and transition surfaces on the workpiece" includes: using the slit as a reference, machining the workpiece by surface grinding to machine curved surfaces and transition surfaces. This can improve the surface accuracy of the curved surfaces and transition surfaces.

[0063] In some embodiments provided in this application, a workpiece with a rough-machined curved surface can be provided, and then a concave surface and a contact plane can be machined on the workpiece using the rough-machined curved surface as a reference. After connecting two workpieces and forming a slit, the rough-machined curved surface can be further finished to obtain the curved surface. This machining method can ensure the relative positional accuracy of the concave surface, the contact plane, and the curved surface as much as possible, and the thickness accuracy between the concave surface and the curved surface can be gradually corrected and improved during the machining process.

[0064] This application provides a funnel, with reference to... Figure 1 The funnel includes a bath tray 1 and a core 2.

[0065] The bath tray 1 has a central seam 11 and a guide surface 12. The two ends of the central seam 11 are the inlet end and the outlet end, respectively. The guide surface 12 surrounds the central seam 11 and is connected to the inlet end.

[0066] The core 2 includes two relatively connected intermediate structures 21, and a slit 22 is formed between the two connected intermediate structures 21. The slit 22 is connected to the outflow end, and a high-pressure water channel 3 is formed between the outflow end and the slit 22.

[0067] The intermediate structure 21 includes a concave surface 211, two contact planes 212, and a contour surface 213. The width-to-height ratio of the concave surface 211 is 10-50. The concave surface 211 extends through the intermediate structure 21 along its width direction. The two contact planes 212 are distributed on both sides of the concave surface 211 along its length direction. The contour surface 213, contact planes 212, and concave surface 211 enclose and form the intermediate structure 21. The contact planes 212 of the two connected intermediate structures 21 are used for sealing and fitting, and the concave surfaces 211 of the two connected intermediate structures 21 are used to form a slit 22.

[0068] The technical effects of the core 2's structure are described above and will not be repeated here. For the funnel itself, atmospheric pressure water flows from the guide surface 12 of the bath tray 1 into the central slit 11 of the bath tray 1. A high-pressure water channel 3 is formed between the outlet end of the central slit 11 and the narrow slit 22, allowing high-pressure water to enter the narrow slit 22 of the core 2 itself. The high-speed flowing high-pressure water carries the atmospheric pressure water flowing down from the top of the bath tray 1, and the two water flows mix together, creating an artificial siphon effect. Materials such as silk bundles entering from above and mixing with the water flow are pulled along. By adjusting the water pressure and flow, different stretching effects are achieved on the silk bundles. This improves control over the silk bundles, thereby increasing the quality of the obtained silk bundles.

[0069] In some embodiments provided in this application, the guide surface 12 is an annular curved surface 2132 surrounding the central seam 11, and the slope of the annular curved surface 2132 decreases from the center of the annular curved surface 2132 to the surrounding area. This can improve the control over the flow rate and volume of atmospheric pressure water and increase versatility.

[0070] In some embodiments provided in this application, the high-pressure water channel 3 surrounds the annular channel of the central slit 11 and the narrow slit 22, and the cross-section of the annular channel is two parallel inverted conical tubes. This improves the control over the high-pressure water flow rate and volume, and increases versatility.

[0071] In some embodiments provided in this application, the width of the slit 22 on the prepared core 2 can be about 0.5 mm, and the depth of the slit 22 can be 200–4000 mm. This provides good general performance. This application does not impose any limitations on this.

[0072] Figure 4 A top view of the intermediate structure provided in this application, with reference to Figure 1 , 3 4. In some embodiments provided in this application, the contour surface 213 may include the transition surface 2131 and the curved surface 2132 as described above. The intermediate structure 21 may also include the connecting hole 214 and the pin hole 215 as described above. The connecting hole 214 and the pin hole 215 are used for fastening connection with the fastener. This application does not limit this.

[0073] It should be noted that the funnel itself can be connected to the textile machine to which the application is required, and both the bath tray 1 and the core 2 can be connected to the frame of the textile machine to fix their relative positions. The specific structure of the core 2 can be found in [reference needed]. Figure 3 , 4 This application does not impose any restrictions on this.

[0074] It should be noted that the parallelism or perpendicularity involved in this application, relative to the geometric concepts of absolute parallelism or absolute perpendicularity, allows for a deviation of 0 to 5°. This application does not impose any restrictions on this.

[0075] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0076] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A method for preparing a core, characterized in that, A core used in the preparation of a funnel, the core having a slit penetrating the core; The preparation method includes: A concave surface and a contacting plane are machined on the workpiece. The ratio of the width to the height of the concave surface is 10-50. The height of the concave surface is half the width of the slit. The concave surface penetrates the workpiece along the width direction of the concave surface. The two contacting planes are distributed on both sides of the concave surface along the length direction of the concave surface. The two workpieces are connected so that the corresponding contact planes of the workpieces are sealed and fitted together, and the corresponding concave surfaces of the workpieces form the slit. Using the slit as a reference, a contour surface is machined on each workpiece to obtain an intermediate structure. The contour surface, the contact plane, and the recessed surface enclose the intermediate structure, and two connected intermediate structures form the core.

2. The preparation method according to claim 1, characterized in that, The phrase "machine a contacting concave surface and a contacting flat surface on the workpiece" includes: The workpiece is milled to create the recessed surface; The workpiece is surface-ground to machine the contact surface.

3. The preparation method according to claim 1, characterized in that, The machining reference surface of the recessed surface is the same as the machining reference surface of the contact surface.

4. The preparation method according to any one of claims 1 to 3, characterized in that, The phrase "connecting two workpieces such that the corresponding contact planes of the workpieces are sealed and fitted together, and the corresponding recessed surfaces of the workpieces form the slit" includes: Using the recessed surface as a reference surface, spaced connecting holes and pin holes are machined on the workpiece; Fasteners are passed through the connecting holes of the two workpieces to connect the two workpieces, and the corresponding recessed surfaces of the workpieces form the slit.

5. The preparation method according to claim 4, characterized in that, The fastener includes a threaded post and a connecting pin, and the threaded post and the workpiece are rigidly connected.

6. The preparation method according to any one of claims 1 to 3, characterized in that, The contour surface includes a curved surface and a transition surface. Along the length direction, the curved surface is connected to the two contact planes. Along the width direction, the two ends of the concave surface are connected to the curved surface through the two transition surfaces respectively. The phrase "using the slit as a reference, machining a contour surface on each workpiece to obtain an intermediate structure" includes: Using the slit as a reference, the curved surface and the transition surface are sequentially machined on the workpiece.

7. The preparation method according to claim 6, characterized in that, The phrase "using the slit as a reference, sequentially machining the curved surface and the transition surface on the workpiece" includes: Using the slit as a reference, the workpiece is machined by surface grinding to create the curved surface and the transition surface.

8. A funnel, characterized in that, include: A bath tray has a central seam and a guide surface. The two ends of the central seam are an inlet and an outlet, respectively. The guide surface surrounds the central seam and is connected to the inlet. The core includes two opposing intermediate structures with a slit formed between them. The slit communicates with the outlet end, and a high-pressure water channel is formed between the outlet end and the slit. The intermediate structure includes a concave surface, two contact planes, and a contour surface. The width-to-height ratio of the concave surface is 10-50, and the height of the concave surface is half the width of the slit. The concave surface extends through the intermediate structure along its width direction. The two contact planes are distributed on both sides of the concave surface along its length direction. The contour surface, the contact planes, and the concave surface together form the intermediate structure. The contact surfaces of the two connected intermediate structures are used for sealing and fitting, and the recessed surfaces of the two connected intermediate structures are used to form the slit.

9. The funnel according to claim 8, characterized in that, The guide surface is an annular curved surface surrounding the central seam, and the slope of the annular curved surface decreases from the center of the annular curved surface outwards.

10. The funnel according to claim 8, characterized in that, The high-pressure water channel surrounds the annular channel of the central slit and the narrow slit, and the cross-section of the annular channel is two parallel inverted conical tubes.

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