A plurality of enameled wires are wound and formed
By designing a multi-enameled wire winding forming fixture, and utilizing the combination structure of the winder and the pressure plate, the problem of difficulty in controlling the shape and size of the multi-enameled wire after winding was solved, realizing rapid coil shaping and improving slot fill factor, thus meeting the assembly requirements of high-precision equipment.
Patent Information
- Application Number
- CN202522148725.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-11
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-10-11
AI Technical Summary
When multiple enameled wires are wound, the overlapping and springback between the wires make it difficult to control the size of the wound coil. After curing, the coil is loose and cannot meet the assembly requirements of high-precision equipment. The slot fill factor is low, which affects the magnetic flux density distribution and power output of electromagnetic components.
Design a multi-enameled wire winding and forming fixture, including a winder and a pressure plate. The winder is equipped with a winding slot and a forming block. The coil is positioned by a combination of spacers and forming blocks, and is clamped by the pressure plate to ensure that the coil maintains consistency and dimensional stability during the winding and curing process.
It achieves controllability of shape and size after winding multiple enameled wires and improves slot fill factor, adapts to the pressing and forming of coils of different sizes, and meets the assembly requirements of high-precision equipment.
Smart Images
Figure CN224682939U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of wire winding equipment, specifically to a multi-enameled wire winding forming tooling. Background Technology
[0002] In the field of manufacturing electromagnetic components such as motors and transformers, the technology of winding coils with a single enameled wire is currently very mature and the forming size is controllable. However, when multiple wires are wound in parallel, the overlapping between the enameled wires and the springback of the wires make it difficult to control the size of the wound coil. When two or more wires are wound in parallel, irregular overlapping between the wires is likely to occur due to the difference in the smoothness of the enameled wire surface and the tension fluctuation during the winding process, resulting in local bulges or depressions. At the same time, the elastic springback characteristics of the enameled wire itself will cause the coil to be loose after winding, and it is necessary to rely on binding and fixing to maintain the initial shape. After subsequent impregnation and curing, the dimensional deviation often exceeds 5%, which cannot meet the assembly requirements of high-precision equipment. While the advent of self-adhesive wire has solved the problem of loose coils, the thermosetting adhesive coating on its surface, after being heated and cured, allows the coil to form a monolithic structure. However, the uneven shrinkage rate of the adhesive during the curing process, typically between 1.2% and 2.5%, results in insufficient space for adjustment after the coil shape is fixed. When winding the coil in the limited space of motor stator slots, transformer core windows, etc., the cured coil, due to local dimensional deviations, requires forced compression to fit into the slot. This not only easily damages the insulation layer of the enameled wire but also increases the porosity within the slot, with the slot fill factor generally below 70%, far lower than the 85% or more of a single-strand wound coil. This directly affects the magnetic flux density distribution and power output efficiency of the electromagnetic components. Utility Model Content
[0003] To address the aforementioned technical shortcomings, the purpose of this utility model is to provide a multi-enameled wire winding and forming fixture, including a connecting rod connected to the output end of a winding machine, and a winding device mounted on the connecting rod. The winding device is provided with a plurality of winding slots, which are formed around the axis of the connecting rod and are evenly distributed along the axis of the connecting rod. Each winding slot rotates around the axis of the connecting rod to drive the enameled wire to wind. Removable pressure plates are also provided on both sides of the winding slots, which are used to clamp and fix the shape of the coil after winding.
[0004] To ensure that the enameled wire is evenly wound within the winding slot during winding, the winding device has the following features: the winding device consists of several parallel spacers and a forming block assembled between two adjacent spacers. The cross-sectional shape of the forming block matches the shape of the coil, and the length and width of the spacers are both greater than the length and width of the forming block.
[0005] To facilitate quick assembly of the winding device, the following features are specifically provided: a mounting base coaxial with the connecting rod is provided at the center of the spacer on the side of the winding device near the connecting rod, and the connecting rod is fixedly connected to the mounting base through a connecting shaft coaxially provided at its end.
[0006] Preferably, all spacers and forming blocks are provided with first threaded holes parallel to the axis of the connecting rod, and the spacers and forming blocks of the winder are fixed by screwing locking bolts into all the first threaded holes.
[0007] Preferably, at least two first positioning holes are provided on the spacer between the two molding blocks, and the axis of the first positioning hole is parallel to the axis of the first threaded hole; a second positioning hole is provided on the side of the molding block that is in contact with the spacer, and the two adjacent molding blocks and the spacer in between are positioned by positioning pins inserted into the first positioning holes and the second positioning holes.
[0008] Preferably, the two outermost spacers of the entire winding device are provided with positioning slots that match the shape of the forming block.
[0009] In order to achieve comprehensive shaping and pressing of coils of different sizes in the winding slot, the following features are specifically set: the length of the pressure plate is greater than the length of the winding slot, and the width of the pressure plate matches the width of the winding slot.
[0010] Preferably, threaded holes are provided at both ends of the length direction of the pressure plate, and the axis of the threaded holes is perpendicular to the axis of the connecting rod. The pressure plates located on both sides of the winding slot are installed in the threaded holes by bolts and cooperate with nuts to clamp the coil wound in the winding slot.
[0011] The advantages of this utility model compared to the prior art are: Firstly, this invention solves the problem of difficulty in controlling the shape and size of multiple enameled wires after winding and curing, and can quickly shape the wound coil and improve the slot fill factor of the winder.
[0012] Secondly, the winding device of this utility model is assembled by several spacers and forming blocks with locking bolts. The presence of positioning slots and positioning pins enables quick positioning of the spacers and forming blocks, which not only facilitates the alignment of the first threaded hole, but also ensures that all winding slots on the winding device have the same shape, size and angle after installation, thus ensuring the consistency of the formed coil in each winding slot during subsequent winding.
[0013] Thirdly, the pressure plate in this utility model has a width that matches the winding slot, and since the length of the pressure plate is greater than the length of the winding slot, the pressure plate can fully press both sides of the coil in the winding slot, thereby adapting to the pressing and forming of coils of different sizes and improving the applicability of the tooling. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a three-dimensional view of a multi-enameled wire winding and forming tool without a pressure plate installed.
[0016] Figure 2 This is a three-dimensional sectional view of a multi-enameled wire winding forming tool without a pressure plate installed.
[0017] Figure 3 This is a three-dimensional view of a tooling for winding and forming multiple enameled wires.
[0018] Figure 4 A three-dimensional structural breakdown of a multi-enameled wire winding forming tool. Figure 1 .
[0019] Figure 5 A three-dimensional structural breakdown of a multi-enameled wire winding forming tool. Figure 2 .
[0020] Explanation of reference numerals in the attached drawings: 1. Connecting rod; 1a. Connecting shaft; 2. Winder; 2a. Winding slot; 2b. Spacer; 2b1. Mounting base; 2b2. First threaded hole; 2b3. First positioning hole; 2b4. Positioning slot; 2c. Forming block; 2c1. Second positioning hole; 2c2. Positioning pin; 2d. Locking bolt; 3. Pressure plate; 3a. Threaded hole. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Reference Figures 1 to 5 : A multi-enameled wire winding forming fixture includes a connecting rod 1 connected to the output end of a winding machine, and a winder 2 mounted on the connecting rod 1. The winder 2 is provided with a plurality of winding slots 2a, which are formed around the axis of the connecting rod 1 and are evenly distributed along the axis of the connecting rod 1. Each winding slot 2a rotates around the axis of the connecting rod 1 to drive the enameled wire to wind. Removable pressure plates 3 are also provided on both sides of the winding slots 2a. The pressure plates 3 are used to clamp and fix the shape of the coil after winding on both sides.
[0023] like Figures 1 to 3 As shown, the winding forming fixture in this application is connected to the output end of the winding machine via a connecting rod 1. Multiple enameled wires are respectively installed in the winding slots 2a of the winder 2. When the connecting rod 1 rotates, the winder 2 drives the enameled wires in the winding slots 2a to wind, so that multiple enameled wires are evenly wound in the winding slots 2a. After winding, the operator installs pressure plates 3 on both sides of each winding slot 2a. The pressure plates 3 clamp the coil in the winding slot 2a, thereby pressing the formed coil tightly within a controllable size. The fixture is then sent into a heating device to cure the coil at high temperature. After curing, the operator removes the pressure plates 3 and takes out the formed coil from the winding slots 2a of the winder 2. This embodiment solves the problem of difficulty in controlling the shape and size after multiple enameled wires are wound and cured, and can quickly shape the wound coil and improve the slot fill factor of the winder 2.
[0024] To ensure that the enameled wire is evenly wound within the winding slot 2a during winding, the winder 2 is specifically designed with the following features: The winding device 2 is assembled from several parallel spacers 2b and a forming block 2c located between two adjacent spacers 2b. The cross-sectional shape of the forming block 2c matches the shape of the coil. The length and width of the spacers 2b are both greater than the length and width of the forming block 2c.
[0025] like Figure 4 and Figure 5 As shown, the winder 2 in this embodiment is formed by assembling multiple spacers 2b and forming blocks 2c in sequence. The forming blocks 2c, together with the spacers 2b on both sides, form a winding slot 2a. Since the length and width of the spacers 2b are greater than the length and width of the forming blocks 2c, each enameled wire can be wound individually in the winding slot 2a. The forming blocks 2c limit the enameled wire to ensure that it is wound evenly in the winding slot 2a.
[0026] To facilitate quick assembly of the winder 2, the following features are specifically designed: The winding device 2 has a mounting base 2b1 coaxial with the connecting rod 1 at the center of the spacer 2b on the side near the connecting rod 1. The connecting rod 1 is fixedly connected to the mounting base 2b1 through a connecting shaft 1a coaxially set at its end.
[0027] All spacers 2b and forming blocks 2c are provided with first threaded holes 2b2 parallel to the axis of connecting rod 1. The spacers 2b and forming blocks 2c of the winder 2 are fixed by screwing locking bolts 2d into all the first threaded holes 2b2.
[0028] At least two first positioning holes 2b3 are provided on the spacer 2b located between the two forming blocks 2c, and the axis of the first positioning hole 2b3 is parallel to the axis of the first threaded hole 2b2; a second positioning hole 2c1 is provided on the side of the forming block 2c that is in line with the first positioning hole 2b3 on the same straight line as the spacer 2b; the two adjacent forming blocks 2c and the spacer 2b in between are positioned by inserting positioning pins 2c2 into the first positioning holes 2b3 and the second positioning holes 2c1.
[0029] The two outermost spacers 2b of the winding device 2 are provided with positioning slots 2b4 that match the shape of the forming block 2c.
[0030] like Figure 4 and Figure 5 As shown, in this embodiment, when assembling the winder 2, the workers can arrange the spacers 2b and the forming blocks 2c in sequence at intervals. The positioning slots 2b4 on the two outermost spacers 2b engage with the forming blocks 2c. Then, the positioning pins 2c2 are inserted into the second positioning hole 2c1 of the forming block 2c and the first positioning hole 2b3 of the spacers 2b to position the middle spacers 2b and the forming blocks 2c. Finally, the first threaded holes 2b2 on all spacers 2b and the forming blocks 2c are aligned. Then, the locking bolts 2d are screwed into the first threaded holes 2b2 to lock the spacers 2b and the forming blocks 2c. After locking, the winder 2 is connected to the connecting shaft 1a of the connecting rod 1 through the mounting seat 2b1 on the outermost spacer 2b, and thus rotates with the winder. In this embodiment, the positioning slots 2b4 and positioning pins 2c2 are used to position the spacer 2b and the forming block 2c. This facilitates the alignment of the first threaded hole 2b2 and ensures that all the winding slots 2a on the winder 2 have the same shape, size and angle after installation, thus ensuring the consistency of the formed coil in each winding slot 2a during subsequent winding.
[0031] In order to achieve comprehensive shaping and pressing of coils of different sizes within the winding slot 2a, the following features are specifically designed: The length of the pressure plate 3 is greater than the length of the winding slot 2a, and the width of the pressure plate 3 matches the width of the winding slot 2a.
[0032] The wire pressure plate 3 has threaded holes 3a at both ends along its length. The axis of the threaded holes 3a is perpendicular to the axis of the connecting rod 1. The wire pressure plates 3 located on both sides of the winding slot 2a are installed in the threaded holes 3a by bolts and work with nuts to clamp the coil wound in the winding slot 2a.
[0033] like Figures 3 to 5 As shown, in this embodiment, the pressure plate 3 has a width that matches the winding slot 2a. Therefore, after the coil is formed in the winding slot 2a, the operator installs the pressure plate 3 on both sides of the winding slot 2a and adjusts the distance between the two pressure plates 3 by using bolts installed in the threaded holes 3a, thereby achieving different pressure on the coil. Since the length of the pressure plate 3 is greater than the length of the winding slot 2a, the pressure plate 3 can fully press both sides of the coil in the winding slot 2a, thereby adapting to the pressing and forming of coils of different sizes and improving the applicability of the tooling.
[0034] Working principle: During use, the output end of the winding machine is connected via connecting rod 1. Multiple enameled wires are installed in the winding slots 2a of the winding device 2. When connecting rod 1 rotates, the winding device 2 drives the enameled wires in the winding slots 2a to wind, so that the multiple enameled wires are evenly wound in the winding slots 2a. After winding is completed, the station staff installs pressure plates 3 on both sides of each winding slot 2a. The pressure plates 3 clamp the coil in the winding slot 2a, thereby pressing the formed coil tightly within a controllable size. Then, the fixture is sent into the heating equipment to cure the coil at high temperature. After curing, the staff removes the pressure plates 3 and takes out the formed coil in the winding slots 2a of the winding device 2.
[0035] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.
Claims
1. A tooling for winding and forming multiple enameled wires, characterized in that, The device includes a connecting rod (1) that connects to the output end of the winding machine, and a winding device (2) installed on the connecting rod (1). The winding device (2) is provided with a plurality of winding slots (2a). The winding slots (2a) are formed around the axis of the connecting rod (1) and are evenly distributed along the axis of the connecting rod (1). Each winding slot (2a) rotates around the axis of the connecting rod (1) to drive the enameled wire to wind. The winding slot (2a) is also provided with detachable pressure plates (3) on both sides. The pressure plates (3) are used to clamp and fix the shape of the coil on both sides after winding.
2. The multi-enameled wire winding forming fixture according to claim 1, characterized in that, The winding device (2) is formed by assembling several parallel spacers (2b) and a forming block (2c) located between two adjacent spacers (2b). The cross-sectional shape of the forming block (2c) matches the shape of the coil. The length and width of the spacers (2b) are both greater than the length and width of the forming block (2c).
3. The multi-enameled wire winding forming fixture according to claim 2, characterized in that, The winding device (2) has a mounting base (2b1) coaxial with the connecting rod (1) at the center of the spacer (2b) on the side near the connecting rod (1). The connecting rod (1) is fixedly connected to the mounting base (2b1) through a connecting shaft (1a) coaxially arranged at its end.
4. The multi-enameled wire winding forming fixture according to claim 2, characterized in that, All spacers (2b) and forming blocks (2c) are provided with first threaded holes (2b2) parallel to the axis of the connecting rod (1). The spacers (2b) and forming blocks (2c) of the winder (2) are fixed in all the first threaded holes (2b2) by screwing in the locking bolts (2d).
5. The multi-enameled wire winding forming fixture according to claim 4, characterized in that, At least two first positioning holes (2b3) are provided on the spacer (2b) located between the two forming blocks (2c), and the axis of the first positioning hole (2b3) is parallel to the axis of the first threaded hole (2b2); The molded block (2c) has a second positioning hole (2c1) on one side of the spacer (2b) that is on the same straight line as the first positioning hole (2b3). Two adjacent molded blocks (2c) and the spacer (2b) in between are positioned by inserting positioning pins (2c2) into the first positioning hole (2b3) and the second positioning hole (2c1).
6. The multi-enameled wire winding forming fixture according to claim 4, characterized in that, The winding device (2) has positioning slots (2b4) on the two outermost spacers (2b) that match the shape of the forming block (2c).
7. The multi-enameled wire winding forming fixture according to claim 1, characterized in that, The length of the pressure plate (3) is greater than the length of the winding slot (2a), and the width of the pressure plate (3) matches the width of the winding slot (2a).
8. The multi-enameled wire winding forming fixture according to claim 7, characterized in that, The pressure plate (3) has threaded holes (3a) at both ends along its length. The axis of the threaded hole (3a) is perpendicular to the axis of the connecting rod (1). The pressure plates (3) located on both sides of the winding slot (2a) are installed in the threaded hole (3a) with bolts and nuts to clamp the coil wound in the winding slot (2a).