Coil winding jig core

Abstract

The utility model relates to the technical field of coil winding, and discloses a coil winding jig core which comprises a shaft sleeve assembly, a mounting hole is formed in the shaft sleeve assembly, and a notch penetrating through the shaft sleeve assembly in the radial direction is formed in the inner wall of the mounting hole; a shaft core assembly is embedded in the mounting hole, the shaft core assembly comprises a supporting rod, two buckles are oppositely arranged at the tail end of the supporting rod, and the opposite sides of the tail ends of the two buckles can penetrate through the notch to the outer side of the shaft sleeve assembly; the buckle can be bent towards the interior of the notch under extrusion of the framework, after the shaft sleeve assembly is completely sleeved with the framework, the buckle is reset outwards, the inclined face of the back of the buckle makes contact with the tail end of the framework, and then the framework firmly abuts against the end face of the positioning ring to be positioned through thrust of the inclined face. Compared with elastic positioning through a shifting bead, the structure can provide larger thrust, the framework is prevented from moving disorderly due to external force, and then the positioning accuracy of the framework and the consistency of the production quality of products are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coil winding, in particular to a coil winding fixture core. Background Art

[0002] The coil winding jig core is an auxiliary tool used during coil winding. It mainly plays the following roles: (1) Positioning and support: ensuring that the coil can be wound according to a specific shape and size, and maintaining stability during the winding process; (2) Improving accuracy: helping to achieve a more accurate number of turns and uniform winding distribution; (3) Improving efficiency: making the winding operation more convenient and smooth, reducing errors and repetitive work; this jig core is usually designed and manufactured according to the specifications and winding requirements of different coil skeletons to meet diverse production needs.

[0003] The coil winding machine uses the winding jig core to complete the winding process. However, due to the influence of factors such as the skeleton shape and winding tension, the existing jig core has the following unreasonable features:

[0004] (1) The fixture core uses elastic positioning of beads, which may cause inaccurate positioning;

[0005] (2) The ball-pushing force is insufficient;

[0006] (3) The defect rate is relatively high when the wires are not arranged neatly during winding. Utility Model Content

[0007] The problem to be solved by the utility model is to provide a coil winding jig core. During the installation process of the skeleton, the buckle will first be squeezed to make it elastically deformed and bend into the notch, so that the skeleton can be sleeved on the shaft sleeve assembly, until one end of the skeleton contacts the positioning ring and the buckle is reset outward, so that the inclined surface on the back of the buckle contacts the end of the skeleton, and then the thrust of the inclined surface makes the skeleton firmly lean against the end face of the positioning ring for positioning, so as to improve the positioning accuracy and the yield of the product.

[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0009] A coil winding jig core comprises a sleeve assembly, a mounting hole is provided inside the sleeve assembly, and a notch is provided on the inner wall of the mounting hole and penetrates the sleeve assembly in a radial direction;

[0010] The mounting hole is embedded with an axis core assembly, which includes a support rod, and two buckles with an inclined back surface that can be elastically deformed are arranged opposite to each other at the ends of the support rod, and the opposite sides of the two buckle ends can pass through the notch to the outside of the sleeve assembly;

[0011] A positioning ring is also sleeved on the outside of the sleeve assembly, and a frame for winding wire is sleeved on the sleeve assembly. When one end of the frame abuts against the positioning ring, the other end abuts against the inclined surface of the back of the buckle.

[0012] Optionally, the sleeve assembly includes a coaxially distributed mounting portion and a driving portion, the driving portion is fixedly connected to one end of the mounting portion, the positioning ring is fixedly sleeved on the outside of the driving portion, the notch is opened at the end of the mounting portion, and the mounting hole penetrates the mounting portion and the driving portion axially.

[0013] Optionally, the outer diameter of the driving portion is smaller than the outer diameter of the mounting portion, and a driving surface parallel to the axis of the driving portion is provided on the outer side of the driving portion.

[0014] Optionally, positioning holes are provided on the outer circumferential surfaces of the positioning ring and the driving portion, and the axes of the positioning holes are perpendicular to the axis of the mounting hole.

[0015] Optionally, the support rod and the buckle are connected by integral molding, and a gap is formed between two opposite side surfaces of the buckle and the end surface of the support rod.

[0016] Optionally, chamfers are provided on the outer sides of the front ends of the two buckles.

[0017] Optionally, the thickness of the buckle is smaller than the width of the notch.

[0018] Optionally, the skeleton includes a main body, which is sleeved on the outside of the sleeve assembly through an inner hole, and baffles for limiting the winding range are provided at both ends of the main body, and the outer diameter of the baffle is larger than the outer diameter of the main body.

[0019] Beneficial Effects

[0020] The buckle of the central axis core assembly of the utility model is elastic and can bend into the notch under the pressure of the skeleton. When the skeleton is completely sleeved on the shaft sleeve assembly, the buckle resets outward and makes the inclined surface on its back contact with the end of the skeleton, so that the skeleton is firmly positioned against the end face of the positioning ring through the thrust of the inclined surface. Compared with elastic positioning by beads, this structure can provide greater thrust, prevent the skeleton from moving around due to external forces, and thus improve the positioning accuracy of the skeleton and the consistency of product production quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model;

[0022] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0023] Figure 3This is a schematic diagram of the position structure of the buckle and the inner hole of the utility model;

[0024] Figure 4 It is a schematic diagram of the internal structure of the utility model;

[0025] Figure 5 It is a structural schematic diagram of the shaft sleeve assembly of the utility model;

[0026] Figure 6 It is a schematic diagram of the internal structure of the shaft sleeve assembly of the utility model;

[0027] Figure 7 It is a structural schematic diagram of the shaft core assembly of the utility model;

[0028] Figure 8 This is a schematic diagram of the main structure of the shaft core assembly of the utility model;

[0029] Among them, 1. sleeve assembly; 11. mounting portion; 12. driving portion; 13. mounting hole; 14. notch; 15. driving surface; 2. positioning ring; 21. positioning hole; 3. shaft core assembly; 31. support rod; 32. buckle; 33. notch; 34. chamfer; 35. inclined surface; 4. skeleton; 41. main body; 42. baffle; 43. inner hole. DETAILED DESCRIPTION

[0030] The present invention will now be further described in detail in conjunction with the accompanying drawings and embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0031] Embodiment 1

[0032] like Figure 1-Figure 2 As shown, a coil winding jig core includes a sleeve assembly 1, a positioning ring 2 and a shaft core assembly 3, wherein the positioning ring 2 is fixedly sleeved on the outside of the sleeve assembly 1, and the shaft core assembly 3 is embedded in the interior of the sleeve assembly 1, and the two are used together to realize the axial positioning of the skeleton 4 installed on the shaft core assembly 3.

[0033] As mentioned above, the skeleton 4 is used for winding to form a coil, and includes a main body 41, which is provided with an inner hole 43. The main body 41 is sleeved on the outer side of the sleeve assembly 1 through the inner hole 43, and baffles 42 for limiting the winding range are provided at both ends of the main body 41.

[0034] The main body 41 and the baffle 42 are connected by an integrally formed structure. The area between the two baffles 42 and the main body 41 is the winding range. The outer diameter of the baffle 42 is larger than the outer diameter of the main body 41, so as to better achieve the purpose of limiting the winding range.

[0035] like Figure 1-Figure 4As shown, the shaft sleeve assembly 1 includes a mounting portion 11 and a driving portion 12, the driving portion 12 is fixedly connected to one end of the mounting portion 11, the two are coaxially distributed and adopt an integrally formed structure; a mounting hole 13 is opened inside the shaft sleeve assembly 1, and a notch 14 is opened on the inner wall of the mounting hole 13 to radially penetrate the shaft sleeve assembly 1, that is, the mounting hole 13 axially penetrates the mounting portion 11 and the driving portion 12, and the notch 14 is opened at the end of the mounting portion 11.

[0036] The shaft core assembly 3 is embedded in the mounting hole 13, and the shaft core assembly 3 includes a support rod 31, and two elastically deformable buckles 32 are arranged opposite to each other at the ends of the support rod 31. The back of the buckle 32 has a slope 35, and the opposite sides of the ends of the two buckles 32 can pass through the notch 14 to the outside of the sleeve assembly 1.

[0037] The thickness of the buckle 32 is smaller than the width of the notch 14 , and based on this, the buckle 32 can be deformed and moved in the notch 14 , ensuring that it can bend and reset in time.

[0038] The frame 4 for winding wires is sleeved on the mounting portion 11 of the sleeve assembly 1 , and when one end of the frame 4 abuts against the positioning ring 2 , the other end abuts against the inclined surface 35 on the back of the buckle 32 .

[0039] The buckle 32 of the shaft core assembly 3 is elastic and can bend into the notch 14 under the pressure of the skeleton 4. When the skeleton 4 is completely sleeved on the mounting portion 11 of the sleeve assembly 1, the buckle 32 resets outward and makes the inclined surface 35 on its back contact with the end of the skeleton 4, and then the thrust of the inclined surface 35 makes the skeleton 4 firmly lean against the end face of the positioning ring 2 to achieve positioning; compared with elastic positioning by beads, this structure can provide greater thrust to prevent the skeleton 4 from moving around due to external forces, thereby improving the positioning accuracy of the skeleton 4 and the consistency of product production quality.

[0040] Workflow:

[0041] Assembly of the jig core: first, fix the positioning ring 2 on the driving part 12 of the sleeve assembly 1, then insert the shaft core assembly 3 into the mounting hole 13 of the sleeve assembly 1, and make the buckle 32 located between the notches 14. Here, the support rod 31 and the mounting hole 13 are interference fit, and then assemble the assembled jig core to the corresponding winding machine;

[0042] Installation of the skeleton 4: The main body 41 of the skeleton 4 is sleeved on the outside of the mounting portion 11 of the sleeve assembly 1. When the mounting portion 11 enters the inner hole 43, the side wall of the inner hole 43 squeezes the buckle 32, causing it to bend and embed into the notch 14, to ensure that the main body 41 can be smoothly wrapped around the mounting portion 11; when the end face of the positioning ring 2 contacts one end of the skeleton 4, the end of the buckle 32 has passed through the inner hole 43 and is reset outward under the action of its own elastic force. The elastic force can act on the other end of the skeleton 4 through the inclined surface 35 on the back of the buckle 32, that is, the thrust of the inclined surface 35 makes the skeleton 4 firmly lean against the end face of the positioning ring 2 to achieve positioning. Under the joint action of the positioning ring 2 and the buckle 32, the axial positioning of the skeleton 4 on the sleeve assembly 1 can be achieved.

[0043] In the existing structure that uses elastic positioning by beads, the contact area between the beads and the inner wall of the frame 4 is small, and its ejection force is insufficient, which easily causes the frame 4 to move around due to external forces. The fixture core of the utility model uses elastic double-sided buckles 32 to position the frame 4, which not only has a higher thrust, but also a larger contact area between the buckles 32 and the frame 4, which can avoid the frame 4 from moving around due to external forces, thereby improving the positioning accuracy of the frame 4 and the consistency of product production quality.

[0044] Embodiment 2

[0045] On the basis of the first embodiment, the present invention further improves the fixture core proposed therein.

[0046] like Figure 1-Figure 2 , Figure 5-Figure 6 As shown, the outer diameter of the driving part 12 is smaller than the outer diameter of the mounting part 11, and the positioning ring 2 is fixedly sleeved on the outer side of the driving part 12; the shaft sleeve assembly 1 is an overall stepped shaft structure, resulting in a shoulder at the connection between the driving part 12 and the mounting part 11, which can more conveniently achieve axial positioning of the positioning ring 2 on the driving part 12.

[0047] The outer circumferential surfaces of the positioning ring 2 and the driving part 12 are both provided with positioning holes 21, and the axis of the positioning hole 21 is perpendicular to the axis of the mounting hole 13. After the positioning ring 2 is moved axially to the driving part 12, it is rotated around its own axis until the positioning holes 21 on the positioning ring 2 and the driving part 12 are aligned with each other, and then the positioning holes 21 are inserted by pins or bolts to achieve fixed installation of the positioning ring 2 on the sleeve assembly 1.

[0048] The axial dimension of the driving part 12 is greater than that of the positioning ring 2. Therefore, the positioning ring 2 can not only serve as an axial reference for installing the skeleton 4, but also as an axial reference for installing the jig core on the winding machine; and a driving surface 15 parallel to its axis is provided on the outer side of the driving part 12.

[0049] The winding machine provides rotational drive, and the driving surface 15 is a plane machined on the outer circumferential surface of the driving part 12; when one end of the driving part 12 is embedded in the corresponding interface on the winding machine, the driving surface 15 cooperates with the corresponding surface in its interface, so that the torque output by the winding machine can be transmitted to the sleeve assembly 1, and the skeleton 4 can be driven to rotate.

[0050] like Figure 1-Figure 2 , Figure 7-Figure 8 As shown, the support rod 31 and the buckle 32 are connected by integral molding, which is convenient for processing; and a gap 33 is formed between the opposite sides of the two buckles 32 and the end surface of the support rod 31. The function of the gap 33 is to facilitate the buckle 32 to bend and deform after being squeezed, and provide a working space for its inward deformation.

[0051] In addition, chamfers 34 are provided on the outer sides of the front ends of the two buckles 32 to facilitate the skeleton 4 to be easily inserted into the outer sides of the two buckles 32 and the mounting portion 11; the chamfer 34 surface is a slope structure, and under the action of the chamfer 34, the diameter of the end of the buckle 32 is less than or equal to the diameter of the inner hole 43, so that the skeleton 4 can be directly aligned with the mounting portion 11 for movement, avoiding interference between the end face of the skeleton 4 and the end of the buckle 32, thereby hindering the skeleton 4 from moving toward the positioning ring 2.

[0052] In summary, the jig core proposed in the utility model adopts the form of elastic double-sided buckle 32, which increases the area of ​​the positioning contact surface with the skeleton 4, and after the skeleton 4 is loaded into the jig core, the elastic inclined surface 35 of the buckle 32 pushes the skeleton 4 tightly against the end face of the positioning ring 2 for positioning. The jig core proposed in the utility model can meet the product positioning requirements, improve the stability and performance consistency of the product production process, and reduce the defect rate and production cost of the production process.

[0053] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model 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 a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0054] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0055] The above is based on the ideal embodiment of the utility model. Through the above description, relevant personnel can make various changes and modifications without deviating from the technical concept of this utility model. The technical scope of this utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. A coil winding jig core, characterized in that: It comprises a shaft sleeve assembly (1), wherein a mounting hole (13) is provided inside the shaft sleeve assembly (1), and a notch (14) is provided on the inner wall of the mounting hole (13) and penetrates the shaft sleeve assembly (1) in a radial direction; The mounting hole (13) is embedded with a shaft core assembly (3), the shaft core assembly (3) comprising a support rod (31), two elastically deformable buckles (32) having an inclined surface (35) on the back thereof are arranged opposite to each other at the ends of the support rod (31), and the opposite sides of the ends of the two buckles (32) can pass through the notch (14) to the outside of the shaft sleeve assembly (1); The shaft sleeve assembly (1) is also sleeved with a positioning ring (2) on its exterior, and a wire winding frame (4) is sleeved on the shaft sleeve assembly (1), and when one end of the frame (4) abuts against the positioning ring (2), the other end abuts against the inclined surface (35) on the back of the buckle (32).

2. The coil winding jig core according to claim 1, characterized in that: The shaft sleeve assembly (1) comprises a coaxially distributed mounting portion (11) and a driving portion (12), wherein the driving portion (12) is fixedly connected to one end of the mounting portion (11), the positioning ring (2) is fixedly sleeved on the outside of the driving portion (12), the notch (14) is formed at the end of the mounting portion (11), and the mounting hole (13) axially penetrates the mounting portion (11) and the driving portion (12).

3. The coil winding jig core according to claim 2, characterized in that: The outer diameter of the driving portion (12) is smaller than the outer diameter of the mounting portion (11), and a driving surface (15) parallel to the axis of the driving portion (12) is provided on the outer side of the driving portion (12).

4. The coil winding jig core according to claim 3, characterized in that: Positioning holes (21) are provided on the outer circumferential surfaces of the positioning ring (2) and the driving portion (12), and the axes of the positioning holes (21) are perpendicular to the axes of the mounting holes (13).

5. The coil winding jig core according to claim 1, characterized in that: The support rod (31) and the buckle (32) are connected by integral molding, and a notch (33) is formed between two opposite side surfaces of the buckle (32) and the end surface of the support rod (31).

6. The coil winding jig core according to claim 5, characterized in that: The front ends of the two buckles (32) are both provided with chamfers (34) on their outer sides.

7. The coil winding jig core according to claim 6, characterized in that: The thickness of the buckle (32) is smaller than the width of the notch (14).

8. The coil winding jig core according to any one of claims 1 to 7, characterized in that: The skeleton (4) comprises a main body (41), the main body (41) being sleeved on the outside of the shaft sleeve assembly (1) through an inner hole (43), baffles (42) for limiting a winding range being provided at both ends of the main body (41), and the outer diameter of the baffles (42) being greater than the outer diameter of the main body (41).

Images