A plastic molded storage device electromagnetic needle shell structure

Abstract

The application discloses a plastic-coated electromagnetic needle shell structure of a storage accumulator, which comprises a magnetic conducting assembly and a plastic coating layer. The magnetic conducting assembly comprises a coil framework and a wire wound on the coil framework. The plastic coating layer is coated on the outer side of the coil framework and the wire. The plastic coating layer not only fills the outer periphery of the coil framework, but also is combined with the coil framework into an integrated structure for fixing and sealing the magnetic conducting assembly. The application has the effects of convenient operation and high production efficiency.

Description

Technical Field

[0001] This application relates to the field of weft feeder technology, and in particular to a plastic-coated electromagnetic needle housing structure for a weft feeder. Background Technology

[0002] The weft feeder is an important component of a shuttleless loom. Its working principle involves pre-loading a certain number of yarn loops onto a yarn drum. A motor rotates, causing the drum to vibrate and supply the yarn to the loom. The purpose is to ensure uniform and constant yarn tension and a constant weft feed length. The weft feeder is a temporary storage device for the unloaded weft yarn on the bobbin before it enters the shed. Used in water-jet and air-jet looms, it typically consists of a motor, yarn drum, yarn winding disc, yarn quantity detector, damping ring, tensioner, and yarn feeding mechanism, and may also include an electromagnetic needle. The electromagnetic needle is a needle structure that requires frequent reciprocating motion.

[0003] The existing method for molding the shell of the electromagnetic needle for weft feeders generally adopts a combination structure of "iron sleeve + resin potting". That is, the iron sleeve base is first prepared by machining, then the magnetic conductive component is placed inside the iron sleeve, and resin material is poured into the iron sleeve. After the resin cures, a complete shell is formed. This process has problems such as complicated procedures, assembly accuracy relying on manual operation, and long production cycle, making it difficult to meet the needs of large-scale production. Utility Model Content

[0004] To improve the current situation, this application provides a plastic-coated electromagnetic needle housing structure for a weft feeder.

[0005] The technical solution for the plastic-coated electromagnetic needle housing structure of the weft feeder provided in this application is as follows: A plastic-coated electromagnetic needle housing structure for a weft feeder includes a magnetic conductive component and a plastic coating layer. The magnetic conductive component includes a coil frame and a wire wound on the coil frame. The plastic coating layer covers the outer side of the coil frame and the wire, and the plastic coating layer not only fills the outer periphery of the coil frame, but also integrates with the coil frame as an integral structure to fix and seal the magnetic conductive component.

[0006] By adopting the above technical solution and replacing the traditional "iron sleeve + resin potting" combination structure with a plastic-coated integrated molding process, production efficiency can be greatly improved: not only are multiple time-consuming processes such as iron sleeve processing, resin mixing and potting, and long curing time eliminated, but also multi-step discrete production is integrated into single-step continuous molding. Moreover, this process is compatible with automated production lines, which can effectively reduce labor and turnover costs and achieve large-scale and efficient production.

[0007] Preferably, the outer peripheral wall of the coil frame is provided with a wavy texture, and the inner wall of the plastic coating layer is formed with an interlocking surface that matches the wavy texture, so that the plastic coating layer and the coil frame form a concave-convex embedded connection.

[0008] By adopting the above technical solution, the wavy texture significantly increases the contact area between the coil frame and the plastic coating layer, forming a concave-convex embedded connection, which greatly enhances the tightness of the bond between the two.

[0009] Preferably, the coil frame has a sliding groove along the axial direction, the sliding groove passes through the coil frame and extends to the end face of the plastic coating layer; the sliding groove is configured to allow the electromagnetic needle to slide back and forth, and to serve as a mold positioning reference during plastic coating molding.

[0010] By adopting the above technical solution, the sliding groove can cooperate with the positioning column in the injection mold to realize the rapid and accurate positioning of the magnetic conductive component in the mold cavity, and avoid the radial displacement of the magnetic conductive component due to injection pressure and melt impact during the plastic coating process; at the same time, it ensures the relative positional accuracy of the plastic coating layer and the magnetic conductive component, and ensures the uniformity of the plastic coating layer thickness.

[0011] Preferably, both the coil frame and the plastic coating are made of plastic, and the softening point or heat distortion temperature of the coil frame material is higher than the melting temperature of the plastic coating material.

[0012] By adopting the above technical solution, the coil frame can withstand an injection temperature of 220°C to 230°C, avoiding softening, melting, or irreversible shrinkage of the coil frame during the injection molding process.

[0013] Preferably, the conductor is a high-temperature resistant conductor, and the upper limit of the temperature resistance of its insulation layer is higher than the melt temperature during the molding of the plastic coating layer.

[0014] By adopting the above technical solution, the upper limit of the temperature resistance of the insulation layer of the high-temperature resistant wire is higher than the melt temperature during the molding of the plastic coating layer, thus avoiding the risk of short circuit caused by the melting and damage of the insulation layer during the injection molding process.

[0015] Preferably, the coating layer is a high-strength engineering plastic injection molding layer with a thickness ranging from 2 mm to 4 mm.

[0016] In summary, this application includes at least one of the following beneficial technical effects: 1. This solution uses a plastic-coated integrated molding process to replace the traditional "iron sleeve + resin potting" combination structure, eliminating time-consuming processes such as iron sleeve processing, resin mixing and potting, and long curing time. It integrates multi-step discrete production into a single-step continuous molding process, significantly shortening the production cycle. At the same time, this process can be directly adapted to automated production lines, reducing manual operation and intermediate transfer links, lowering labor costs and transfer losses, effectively supporting large-scale and efficient production, and significantly improving production capacity and economic efficiency. 2. By setting the sliding groove, it can cooperate with the positioning pin in the injection mold to realize the rapid and accurate positioning of the magnetic conductive component in the mold cavity, and avoid the radial displacement of the magnetic conductive component due to injection pressure and melt impact during the plastic coating process; at the same time, it ensures the relative positional accuracy of the plastic coating layer and the magnetic conductive component, and ensures the uniformity of the plastic coating layer thickness. 3. The wavy texture significantly increases the contact area between the coil frame and the plastic coating layer, while forming a concave-convex interlocking structure, greatly enhancing the tightness of their bonding. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a plastic-coated electromagnetic needle housing for a weft feeder in this embodiment; Figure 2 for Figure 1 A cross-sectional view along the AA direction; Figure 3 for Figure 2 Enlarged structural diagram at point B; Reference numerals: 1. Magnetic conductive component; 11. Conductor wire; 12. Coil frame; 13. Sliding groove; 2. Plastic coating layer. Detailed Implementation

[0018] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0019] This application discloses a plastic-coated electromagnetic needle housing structure for a weft feeder.

[0020] Reference Figures 1 to 3 A plastic-coated electromagnetic needle housing structure for a weft feeder includes a magnetic conductive component 1 and a plastic coating layer 2. The magnetic conductive component 1 includes a coil frame 12 and a wire 11 wound on the coil frame 12. The plastic coating layer 2 covers the outer side of the coil frame 12 and the wire 11, and the plastic coating layer 2 not only fills the outer periphery of the coil frame 12, but also integrates with the coil frame 12 into an integral structure for fixing and sealing the magnetic conductive component 1.

[0021] Furthermore, the outer peripheral wall of the coil frame 12 is provided with a wavy texture, and the inner wall of the plastic coating layer 2 is formed with an interlocking surface that matches the wavy texture, so that the plastic coating layer 2 and the coil frame 12 form a concave-convex embedded connection.

[0022] Furthermore, the coil frame 12 is provided with a sliding groove 13 along the axial direction. The sliding groove 13 passes through the coil frame 12 and extends to the end face of the plastic coating layer 2. The sliding groove 13 is configured to allow the electromagnetic needle to slide back and forth and to serve as a mold positioning reference during plastic coating molding.

[0023] Furthermore, both the coil frame 12 and the plastic coating layer 2 are made of plastic material, and the softening point or heat distortion temperature of the coil frame 12 material is higher than the melting temperature of the plastic coating layer 2 material.

[0024] Furthermore, conductor 11 is a high-temperature resistant conductor, and the upper limit of the temperature resistance of its insulation layer is higher than the melt temperature when the plastic coating layer 2 is formed.

[0025] Furthermore, the plastic coating layer 2 is a high-strength engineering plastic injection molding layer with a thickness ranging from 2 mm to 4 mm.

[0026] The implementation principle of the plastic-coated electromagnetic needle housing structure disclosed in this application embodiment is as follows: using a special winding equipment, the wire 11 is wound into the corresponding winding groove of the coil skeleton 12 according to the preset number of turns and wire diameter parameters; then, a pair of coil skeletons 12 with the wound wire 11 are stacked on top of each other to assemble a complete magnetic conductive component 1.

[0027] The prefabricated magnetic conductive component 1 is then inserted into the positioning post on the special injection mold through the sliding groove 13 on its coil frame 12, thereby assisting the magnetic conductive component 1 to be quickly positioned in the preset position of the special injection mold; plastic is selected as the coating material, and the molten plastic is injected into the mold cavity according to the set process parameters by the injection molding machine, so that it wraps around the outer periphery of the coil frame 12; after pressure holding, shaping, cooling and solidification, the plastic coating is completed in one piece, and finally a plastic coating layer 2 with both fixing and protection functions is formed.

[0028] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A plastic-coated electromagnetic needle housing structure for a weft feeder, characterized in that, It includes a magnetic conductive component (1) and a plastic coating layer (2); the magnetic conductive component (1) includes a coil frame (12) and a wire (11) wound on the coil frame (12); the plastic coating layer (2) covers the outside of the coil frame (12) and the wire (11), and the plastic coating layer (2) not only fills the outer periphery of the coil frame (12), but also integrates with the coil frame (12) into an integral structure for fixing and sealing the magnetic conductive component (1).

2. The plastic-coated electromagnetic needle housing structure for a weft feeder according to claim 1, characterized in that: The outer peripheral wall of the coil frame (12) is provided with a wavy texture, and the inner wall of the plastic coating layer (2) is formed with an interlocking surface that matches the wavy texture, so that the plastic coating layer (2) and the coil frame (12) form a concave-convex embedded connection.

3. The plastic-coated electromagnetic needle housing structure for a weft feeder according to claim 1, characterized in that: The coil frame (12) has a sliding groove (13) along the axial direction. The sliding groove (13) passes through the coil frame (12) and extends to the end face of the plastic coating layer (2). The sliding groove (13) is configured to allow the electromagnetic needle to slide back and forth and to serve as a mold positioning reference during plastic coating molding.

4. The plastic-coated electromagnetic needle housing structure for a weft feeder according to claim 1, characterized in that: Both the coil frame (12) and the plastic coating layer (2) are made of plastic material, and the softening point or heat distortion temperature of the material of the coil frame (12) is higher than the melting temperature of the material of the plastic coating layer (2).

5. The plastic-coated electromagnetic needle housing structure for a weft feeder according to claim 1, characterized in that: The conductor (11) is a high-temperature resistant conductor, and the upper limit of the temperature resistance of its insulation layer is higher than the melt temperature when the plastic coating layer (2) is formed.

6. The plastic-coated electromagnetic needle housing structure for a weft feeder according to claim 1, characterized in that: The plastic coating layer (2) is a high-strength engineering plastic injection molding layer with a thickness ranging from 2 mm to 4 mm.

Images