CN214753371U

CN214753371U - Coil pressing die

Info

Publication number: CN214753371U
Application number: CN202120717099.2U
Authority: CN
Inventors: 祝全根; 陈晨
Original assignee: Lanto Electronic Ltd
Current assignee: Lanto Electronic Ltd; Kunshan Liantao Electronics Co Ltd
Priority date: 2021-04-08
Filing date: 2021-04-08
Publication date: 2021-11-16
Anticipated expiration: 2031-04-08

Abstract

The embodiment of the utility model discloses coil embossing mold utensil, including first mould and second mould, first mould includes the base and sets up the fixed column on the base, and the second mould has with fixed column assorted cell body and around the face that compresses tightly of cell body setting, and the face that compresses tightly has the slope towards the inside slope of cell body in the subregion, establishes the coil cover and is fixed in on the fixed column, cooperatees through first mould and second mould to face pressing coil obtains predetermined shape. Therefore, the utility model discloses technical scheme can change the shape of coil through simple structure effectively, can use manpower sparingly material resources, practices thrift manufacturing cost.

Description

Coil pressing die

Technical Field

The embodiment of the utility model provides a relate to the electronic product field, concretely relates to coil embossing mold utensil.

Background

With the development of science and technology, the application of smart watches is more and more extensive, and the function that smart watches has is also more and more. For convenience of use, most of the existing smart watches have a wireless charging function, and in the field of wireless charging receiving terminals, a common part is a combination of ferrite and a coil. Because the backshell of the wrist-watch of intelligence has the radian, set up the coil on the ferrite often can not laminate with the backshell shape when wrist-watch backshell equipment.

In the prior art, the coil is assembled with the ferrite after pressure maintaining is carried out before assembly to obtain the required radian, but the coil is easy to be damaged; or, the coil and the ferrite are assembled and then pressure-holding is performed together, but the ferrite is likely to break due to its weak strength. The functions of the two parts are limited, so that the production efficiency is low.

SUMMERY OF THE UTILITY MODEL

In view of this, the embodiment of the present invention provides a coil pressing mold, which can replace the conventional pressure maintaining means, and avoid damaging the coil or the ferrite while changing the shape of the coil.

A coil pressing die comprising:

the first die is provided with a fixing column and a base, wherein the fixing column is arranged on the base and is used for sleeving a fixed coil; and

and the second die is provided with a groove body matched with the fixed column and a pressing surface surrounding the groove body, and the pressing surface is at least provided with a slope inclining towards the inside of the groove body in a partial area.

Preferably, the position of the slope extends at least from the groove body to the outer diameter of the coil.

Preferably, the inclination angle of the slope is 5 ° to 15 °.

Preferably, a face of the base, which is in contact with the coil, has a slope toward the inside or outside of the first mold; or

The surface of the base, which is contacted with the coil, is formed into an arc surface.

Preferably, the slope is 5 ° to 15 °.

Preferably, the coil winding device further comprises a coil winding body, wherein the coil winding body is used for sleeving the coil, and the coil winding body is sleeved on the fixing column.

Preferably, the coil wound body is ferrite.

Preferably, a step structure is arranged between the groove body and the pressing surface, and the step structure is used for avoiding the coil winding body in the pressing process.

Preferably, the step structure has a shape matching the coil wound body, and a depth of the step structure is smaller than a height of the coil wound body;

the coil wound body is partially embedded in the stepped structure during pressing of the coil.

Preferably, the step structure has a depth of 0.05mm to 0.15 mm.

The utility model discloses coil embossing mold utensil includes first mould and second mould, and first mould includes the base and sets up the fixed column on the base, and the second mould has with fixed column assorted cell body and around the face that compresses tightly of cell body setting, and the face that compresses tightly has the slope towards the inside slope of cell body in the subregion, establishes the coil cover and is fixed in on the fixed column, cooperatees through first mould and second mould to the face pressing coil obtains predetermined shape. Therefore, the utility model discloses technical scheme can change the shape of coil effectively through simple structure, makes its laminating with the dorsal scale of intelligent wrist-watch better to promote product quality, can save the pressurize step simultaneously, improve production efficiency.

Drawings

The above and other objects, features and advantages of the embodiments of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

fig. 1 is a schematic perspective view of a coil pressing mold according to an embodiment of the present invention;

fig. 2 is a side view of a coil pressing die according to an embodiment of the present invention;

fig. 3 is a side sectional view of a coil pressing die according to an embodiment of the present invention;

fig. 4 is a schematic working diagram of a first embodiment of a coil pressing die according to an embodiment of the present invention;

fig. 5 is a schematic working diagram of a second embodiment of a coil pressing die according to an embodiment of the present invention;

fig. 6 is a schematic diagram comparing a first embodiment of a coil pressing die and a second embodiment of a second die according to an embodiment of the present invention;

description of reference numerals:

1-a first mold; 11-fixed column; 12-a base; 2-a second mold; 21-a groove body; 22-a compression surface; 23-a step structure; 3-a coil; 4-coil winding.

Detailed Description

The present invention will be described below based on examples, but the present invention is not limited to only these examples. In the following detailed description of the present invention, certain specific details are set forth in detail. It will be apparent to those skilled in the art that the present invention may be practiced without these specific details. Well-known methods, procedures, components and circuits have not been described in detail so as not to obscure the present invention.

Further, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

Unless the context clearly requires otherwise, throughout this specification, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, what is meant is "including, but not limited to".

In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are intended to be inclusive and mean that, for example, they may be fixedly connected or detachably connected or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Fig. 1 is a schematic perspective view of a coil pressing mold according to an embodiment of the present invention. Fig. 2 is a side view of a coil pressing die according to an embodiment of the present invention. Fig. 3 is a side sectional view of a coil pressing die according to an embodiment of the present invention. As shown in fig. 1, 2 and 3, the coil pressing die includes a first die 1 and a second die 2. The first mold 1 includes a fixing post 11 and a base 12, and the fixing post 11 is disposed on the base 12. The second die 2 includes a groove 21 and a pressing surface 22, the groove 21 matches with the fixing post 11, and the pressing surface 22 is disposed around the groove 21 and has a slope inclined toward the inside of the groove 21. That is, the fixing post 11 and the groove 21 have matching shapes, and the coil 3 is sleeved on the fixing post 11 in the process of pressing the coil 3. The fixing post 11 is inserted into the groove 21 and can slide between the two, so that the first mold 1 and the second mold 2 can be detachably connected. The opposite side of the second die 2 and the first die 1 is a pressing surface 22, and under the condition that the second die 2 moves towards the first die 1, the pressing surface 22 contacts with the coil 3, and the slope on the pressing surface enables the coil 3 to have a preset slope so as to adapt to the subsequent assembly requirement.

Because the coil 3 is sleeved on the fixing column 11, the fixing column 11 is arranged on the base 12, and the size of the base 12 is slightly larger than that of the fixing column 11, so as to support the coil 3. During pressing, the other side of the coil 3 is closely attached to the base 12 to restrict the position of the coil 3. In the present embodiment, the first mold 1 has a handle at the rear portion thereof for the convenience of the user in addition to the base 12 and the fixing post 11, and the second mold 2 also has a handle at the rear portion thereof, and optionally, the shapes of the first mold 1 and the second mold 2 may be changed.

Fig. 4 is a schematic working diagram of a first embodiment of a coil pressing die according to an embodiment of the present invention. In an alternative embodiment, as shown in fig. 4, the pressing surface 22 is at least partially a slope, and the slope extends at least from the groove 21 to the outer diameter of the coil 3. That is, since the coil 3 is fitted over the fixing post 11, the outer diameter of the fixing post 11 is substantially equal to the inner diameter of the coil 3, and the slope extends outward from the tank 21, that is, from a position corresponding to the inner diameter of the coil 3. The slope extends from the inner diameter of the coil 3 to the outer diameter of the coil 3 so that the surface of the coil 3 is entirely in contact with the slope, thereby being formed into a preset shape during pressing. In this embodiment, the pressing surface 22 is formed to have a slope, and the portion other than the outer diameter of the coil 3 remains a horizontal surface. Alternatively, the ramp may continue to extend towards the edge of the second mould 2. The slope angle of the ramp may be between 5 and 15 or other angles, and this design may vary depending on the particular manufacturing needs.

Further, a surface of the base 12 contacting the coil 3 has a slope toward the inside or outside of the first mold 1, or a surface of the base 12 contacting the coil 3 is formed into an arc surface. That is, the surface of the base 12 of the first mold 1 contacting the coil 3 may have a slope or a curvature, so that the coil 3 is deformed when being pressed against the base 12, for example, in the case that the surface of the base 12 contacting the coil 3 has a slope toward the inside of the first mold 1, the slope of the pressing surface 22 cooperates with the slope, so that the cross section of the coil 3 is formed in a trapezoid shape. Alternatively, the draft may be between 5 ° and 15 °, or other angles, and this design may vary depending on the particular manufacturing needs.

Fig. 5 is a schematic diagram of a coil pressing mold according to a second embodiment of the present invention. Fig. 6 is a schematic diagram comparing a first embodiment of a coil pressing die and a second embodiment of a second die according to an embodiment of the present invention. As shown in fig. 5 and 6, since the coil 3 needs to be sleeved on the coil winding body 4 and then installed in the electronic device during assembly, if the coil 3 and the coil winding body 4 are treated as a whole, that is, the coil pressing mold acts on the coil 3 assembled with the coil winding body 4, the production efficiency can be improved to a certain extent. In the present embodiment, the coil 3 is sleeved on the coil winding body 4, and the coil winding body 4 is sleeved on the fixing post 11, at this time, a step structure 23 is provided between the groove 21 and the pressing surface 22 of the second mold 2.

The step structure 23 is used to avoid the coil wound body 4 during pressing, and has a shape matching the coil wound body 4. The step structure 23 has a depth smaller than the height of the coil wound body 4, and the coil wound body 4 is partially embedded in the step structure 23 during the process of pressing the coil 3. That is, since the coil 3 is disposed on the coil winding body 4, when the second mold 2 moves toward the first mold 1, the pressing surface 22 needs to be configured to be able to contact the coil 3, so that the coil winding body 4 can be partially embedded, and the second mold 2 can continue to move toward the coil 3 after contacting the coil winding body 4. That is, the stepped structure 23 can function to allow the pressing surface 22 to contact the coil 3 and to shape the coil 3 without crushing the coil wound body 4. For example, in the present embodiment, the coil wound body 4 is ferrite, and the upper portion of the ferrite is a cylinder in which the coil 3 is fitted. In order to avoid the ferrite, the stepped structure 23 is formed in a shape matching the upper surface of the ferrite between the pressing surface 22 and the groove 21, i.e., a circular shape, and has a depth of 0.1 mm. In the process of pressing the coil 3, the second mold 2 moves towards the first mold 1, after contacting the ferrite, the ferrite is partially embedded into the step structure 23, and the second mold 2 can continue to move, so that the pressing surface 22 contacts the coil 3 sleeved on the ferrite, and the coil 3 is correspondingly deformed. Alternatively, the coil wound body 4 may be another component other than ferrite. The shape of the step formation 23 may vary, and its depth may be between 0.05mm and 0.15mm, or other dimensions, and this design may vary depending on the particular production requirements.

Specifically, in use, the user places the coil 3 or the combination of the coil 3 and the coil wound body 4 on the fixing post 11. Then, the fixing post 11 is fitted into the groove 12, and the second mold 2 is moved toward the first mold 1. After the compression surface 22 contacts the coil 3, the two dies are separated to obtain the coil 3 with the preset shape or the coil winding body 4 sleeved with the coil 3 with the preset shape, and then the coil winding body is applied to the next step of assembly.

In addition, the coil pressing die is applicable not only to the molded coil 3 or the combination of the molded coil 3 and the coil wound body 4 but also to the coil 3 pressing operation in the winding process. That is, the user may also use the coil pressing mold for manual winding or match the coil pressing mold with a winding process of a machine dedicated for winding around the mold, that is, directly perform winding on the fixing post 11 or the coil winding body 4 sleeved on the fixing post 11, and mold the first mold 1 and the second mold 2 after the coil 3 is molded, so that the coil 3 has a preset shape.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A coil pressing die, comprising:

the first die (1) is provided with a fixing column (11) and a base (12), the fixing column (11) is arranged on the base (12), and the fixing column (11) is used for sleeving a fixed coil (3); and

a second die (2) having a groove (21) adapted to the fastening stud (11) and a pressing surface (22) surrounding the groove (21), the pressing surface (22) having, at least in some regions, a slope which slopes toward the interior of the groove (21).

2. Coil pressing die according to claim 1, characterized in that the position of the ramp extends at least from the slot (21) to the outer diameter of the coil (3).

3. The coil embossing die of claim 1, wherein the slope is inclined at an angle of 5 ° to 15 °.

4. Coil pressing die according to claim 1, characterized in that the face of the seat (12) in contact with the coil (3) has a slope towards the inside or outside of the first die (1); or

The surface of the base (12) contacted with the coil (3) is formed into a cambered surface.

5. The coil compaction tool of claim 4, wherein the draft is 5 ° to 15 °.

6. The coil pressing die according to claim 1, further comprising a coil winding body (4), wherein the coil winding body (4) is used for sleeving the coil (3), and the coil winding body (4) is sleeved on the fixing column (11).

7. Coil pressing die according to claim 6, characterized in that the coil wound body (4) is ferrite.

8. A coil pressing die according to claim 6, characterized in that a step structure (23) is arranged between the slot body (21) and the pressing surface (22), and the step structure (23) is used for avoiding the coil winding body (4) in the pressing process.

9. Coil pressing die according to claim 8, characterized in that the step structure (23) has a shape matching the coil winding body (4), the depth of the step structure (23) being smaller than the height of the coil winding body (4);

during pressing of the coil (3), the coil wound body (4) is partially embedded in the step structure (23).

10. A coil compacting die according to claim 9, characterized in that the step structure (23) has a depth of 0.05mm to 0.15 mm.