A machining mold for an armature assembly of a relay

Abstract

This utility model discloses a processing mold for an armature assembly of a relay, comprising: an armature fixed in a cavity for molding a plastic part; a first insert forming part of the cavity, the first insert having a protrusion that impacts the edge of the armature during mold closing, resulting in a groove in the armature after impact; by using the protrusion, the edge of the armature is impacted during mold closing, so that the obtuse angle is destroyed after impact, thus not affecting subsequent injection molding, improving product quality, and meeting processing requirements.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to a processing mold for the armature assembly of a relay. Background Technology

[0002] Today, new energy sources are ubiquitous in cities, leading to the iterative upgrades of electrical products related to new energy, such as relays used for new energy storage.

[0003] In the prior art, a relay includes an armature assembly, which includes an armature 20 and a plastic part 21, the plastic part 21 being used to connect and fix the armature 20. (See attached diagram) Figure 1 As shown, the armature 20 has a metal radius (R-angle), and the metal radius is located exactly next to the plastic part 21. This means that during injection molding, the plastic part 21 is formed on the edge of the metal radius, thus forming an integral injection molded armature assembly. Since the armature 20 is made of metal, after bending, it undergoes cutting. This cutting causes the edge of the metal radius to form an obtuse angle. This obtuse angle leads to defects in the area of ​​the obtuse angle during subsequent injection molding, severely affecting product quality. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is how to solve the impact of obtuse angles on product quality. A processing mold for an armature assembly of a relay includes: A cavity, wherein an armature is fixed in the cavity, and the cavity is used to mold a plastic part; A first insert forms part of the cavity. The first insert has a protrusion that impacts the edge of the armature during mold closing, causing a groove to form on the armature after impact.

[0005] The upper surface edge of the armature is located on the impact trajectory of the protrusion.

[0006] The groove portion is located in the metal R-corner region, and the remaining portion of the groove is located in the first planar region connected to the metal R-corner region.

[0007] The length of the groove located in the metal radius region is one-third to one-fifth of the arc length of the metal radius region.

[0008] It also includes a moving mold and a fixed mold, with the first insert connected to the moving mold; or, it also includes a moving mold and a fixed mold, with the first insert connected to the fixed mold.

[0009] The protrusion has a trapezoidal structure and includes a first inclined surface, which impacts the armature.

[0010] The sidewall of the groove near the plastic part is coplanar with the sidewall of the plastic part near the groove.

[0011] It also includes a positioning post, the armature having a through hole through which the positioning post passes.

[0012] It also includes a second insert, the positioning post being connected to the second insert, the first insert having a first positioning hole, and the positioning post extending through the through hole to the first positioning hole.

[0013] It also includes flow channels, and the number of cavities is four, with the flow channels connecting the four cavities.

[0014] The technical solution of this utility model has the following advantages: 1. The present invention provides a processing mold for an armature assembly of a relay, which adopts a raised design. During the mold closing process, the edge of the armature is impacted, so that the obtuse angle is destroyed after the impact, eliminating the defect caused by the obtuse angle. This will not affect the subsequent injection molding, improve product quality, and meet processing requirements.

[0015] 2. The processing mold for the armature assembly of a relay provided by this utility model can better achieve the stamping effect of obtuse angles by impacting from top to bottom, thus eliminating the obtuse angle. In addition, side or bottom stamping can also be used.

[0016] 3. The present invention provides a processing mold for an armature assembly of a relay, which further improves the stamping effect by stamping in two areas, thereby eliminating the obtuse angle.

[0017] 4. The present invention provides a processing mold for an armature assembly of a relay, wherein the first insert is connected to the moving mold, and when the moving mold moves, the first insert also moves, forming a linkage effect; or, through relative movement, when the first insert is connected to the fixed mold, the first insert is in a fixed state, and the relative movement of the first insert is achieved by the movement of the moving mold.

[0018] 5. The present invention provides a processing mold for an armature assembly of a relay. The setting of the first inclined surface creates a force decomposition effect to prevent excessive impact. Secondly, the first inclined surface also creates a squeezing effect, making the stamping position smooth.

[0019] 6. The processing mold for the armature assembly of a relay provided by this utility model has a coplanar design, which better achieves the effect of injection molding.

[0020] 7. The present invention provides a processing mold for an armature assembly of a relay, wherein the setting of the positioning post forms a positioning effect and prevents the armature from shaking.

[0021] 8. The present invention provides a processing mold for an armature assembly of a relay. The cooperation between the positioning post and the first positioning hole not only fixes the armature, but also forms a positioning and fixing effect between the first insert and the second insert, further improving the stability of the fixation among the three.

[0022] 9. The present invention provides a processing mold for an armature assembly of a relay, which has a four-cavity design to improve processing efficiency. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of an existing armature assembly; Figure 2 A schematic diagram of the armature assembly provided by this utility model; Figure 3 A schematic diagram of the processing mold for the armature assembly of a relay provided by this utility model; Figure 4 for Figure 3 A sectional view; Figure 5 A partial structural schematic diagram of a processing mold for an armature assembly of a relay provided by this utility model; Figure 6 A partial cross-sectional view of a machining mold for an armature assembly of a relay provided by this utility model; Figure 7 A partial cross-sectional view from another angle of the machining mold for the armature assembly of a relay provided by this utility model; Figure 8 A partial cross-sectional view of the first insert provided by this utility model.

[0025] Explanation of reference numerals in the attached figures: 10. Cavity; 11. Moving mold; 12. Fixed mold; 13. First insert; 14. Protrusion; 15. Groove; 16. Positioning pin; 17. Second insert; 18. Runner; 20. Armature; 21. Plastic part; 131. First positioning hole; 141. First inclined surface; 201. Radius area; 202. First planar area; 203. Through hole. Detailed Implementation

[0026] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0030] Example 1 This embodiment provides a machining mold for the armature assembly of a relay, as shown in the attached figure. Figures 2-8 As shown, it includes: Cavity 10, specifically formed by the mating of moving mold 11 and fixed mold 12, has the same structure as the armature assembly. When armature 20 is fixed in cavity 10, the remaining space is exactly the structure of plastic part 21. That is, the colloid is injected into cavity 10, cooled and formed into plastic part 21, and plastic part 21 is connected and fixed to armature 20.

[0031] The first insert 13 forms part of the cavity 10 and constitutes part of the inner wall of the cavity 10. The first insert 13 has a protrusion 14 that impacts the edge of the armature 20 during mold closing. Specifically, the edge of the armature 20 extends to the obtuse angle of the R-angle region 201. The impact creates a groove 15 after impact, forming a partition. Furthermore, during mold closing, the protrusion 14 abuts against the groove 15, creating a sealing effect, preventing the colloid from flowing into the groove 15 and thus preventing overflow and defects. By using the protrusion 14 to impact the edge of the armature 20 during mold closing, the obtuse angle is broken after impact, thus not affecting subsequent injection molding, improving product quality, and meeting processing requirements. It should be noted that the obtuse angle in this embodiment specifically refers to the obtuse angle generated during the cutting process. It usually refers to the angle feature of the cutting surface or cut edge being greater than 90 degrees. This feature will affect the subsequent injection molding process, causing the colloid to leak along the obtuse angle and produce defects.

[0032] Specifically, as shown in the attached document Figures 3-5 As shown, the upper surface edge of the armature 20 is located on the impact trajectory of the protrusion 14. Specifically, the upper surface edge of the armature 20 refers to the edge of the upper surface of the R-angle region 201, that is, the edge where the R-angle region 201 produces an obtuse angle. By impacting from top to bottom, the obtuse angle can be better eliminated through stamping. Alternatively, side or bottom stamping can also be used; those skilled in the art can adjust according to actual needs.

[0033] Specifically, as shown in the attached document Figures 3-8 As shown, it should also be noted that there are two protrusions 14, which correspond to the two sides of the armature 20 respectively, and there are also two corresponding impact-generated grooves 15.

[0034] Specifically, as shown in the attached document Figures 2-8 As shown, the groove 15 is located in the metal R-angle region 201, and the remaining part of the groove 15 is located in the first planar region 202, which is connected to the metal R-angle region 201. Here, the first planar region 202 is located in the horizontal direction and is located on the top surface of the armature 20. By stamping the two regions, the stamping effect is further improved, thereby eliminating the obtuse angle.

[0035] Specifically, the length of the groove 15 located in the metal R-corner region 201 is one-third to one-fifth of the arc length of the metal R-corner region 201. The length of the groove 15 can be adjusted according to actual needs.

[0036] Specifically, as shown in the attached document Figures 3-4As shown, it also includes a moving mold 11 and a fixed mold 12, with a first insert 13 connected to the moving mold 11. When the moving mold 11 moves, the first insert 13 also moves, creating a linkage effect. Alternatively, it also includes a moving mold 11 and a fixed mold 12, with the first insert 13 connected to the fixed mold 12. Through relative movement, when the first insert 13 is connected to the fixed mold 12, it is in a fixed state; the relative movement of the first insert 13 is achieved by the movement of the moving mold 11. In this embodiment, the connection between the first insert 13 and the moving mold 11 is used as an example for description.

[0037] Specifically, as shown in the attached document Figures 2-8 As shown, the protrusion 14 has a trapezoidal structure and includes a first inclined surface 141. The first inclined surface 141 impacts the armature 20. Here, the first inclined surface 141 is located above one side of the edge of the armature 20, forming a stamping effect during the impact. The first inclined surface 141 creates a force decomposition effect, preventing excessive impact. Secondly, the first inclined surface 141 also creates a squeezing effect, making the stamped area smooth. In this embodiment, the protrusion 14 is a right-angled trapezoidal structure overall.

[0038] Specifically, the side wall of the groove 15 near the plastic part 21 is coplanar with the side wall of the plastic part 21 near the groove 15. This coplanar arrangement allows for better injection molding results.

[0039] Specifically, as shown in the attached document Figures 5-7 As shown, it also includes a positioning post 16, and the armature 20 has a through hole 203 through which the positioning post 16 passes. The positioning post 16 is provided to create a positioning effect and prevent the armature 20 from shaking. There are two through holes 203 and two positioning posts 16 here.

[0040] Specifically, as shown in the attached document Figures 5-7 As shown, it also includes a second insert 17, with a positioning post 16 connected to the second insert 17. The first insert 13 has a first positioning hole 131, and the positioning post 16 extends through the through hole 203 to the first positioning hole 131. The cooperation between the positioning post 16 and the first positioning hole 131, in addition to fixing the armature 20, also forms a positioning and fixing effect between the first insert 13 and the second insert 17, further improving the stability of the fixation among the three.

[0041] Specifically, it also includes runners 18, and the number of cavities 10 is four, with the runners 18 connecting the four cavities 10. The four-cavity configuration of the mold improves processing efficiency.

[0042] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A machining mold for the armature assembly of a relay, characterized in that, include: A cavity (10) is provided with an armature (20) fixed thereon, and the cavity (10) is used to form a plastic part (21); The first insert (13) forms part of the cavity (10). The first insert (13) is provided with a protrusion (14). The protrusion (14) impacts the edge of the armature (20) during the mold closing process, and the armature (20) generates a groove (15) after impact.

2. The machining mold for the armature assembly of the relay according to claim 1, characterized in that, The upper surface edge of the armature (20) is located on the impact trajectory of the protrusion (14).

3. The machining mold for the armature assembly of the relay according to claim 1, characterized in that, The groove (15) is located in the metal R-corner region (201), and the rest of the groove (15) is located in the first planar region (202) that is connected to the metal R-corner region (201).

4. The machining mold for the armature assembly of the relay according to claim 3, characterized in that, The length of the groove (15) located in the metal R-corner region (201) is one-third to one-fifth of the arc length of the metal R-corner region (201).

5. The machining mold for the armature assembly of the relay according to claim 1, characterized in that, It also includes a moving mold (11) and a fixed mold (12), with the first insert (13) connected to the moving mold (11); or, it also includes a moving mold (11) and a fixed mold (12), with the first insert (13) connected to the fixed mold (12).

6. The machining mold for the armature assembly of the relay according to claim 1, characterized in that, The protrusion (14) has a trapezoidal structure and includes a first inclined surface (141), which impacts the armature (20).

7. The machining mold for the armature assembly of the relay according to claim 1, characterized in that, The side wall of the groove (15) near the plastic part (21) is coplanar with the side wall of the plastic part (21) near the groove (15).

8. The machining mold for the armature assembly of the relay according to claim 1, characterized in that, It also includes a positioning post (16), the armature (20) is provided with a through hole (203), and the positioning post (16) passes through the through hole (203).

9. The machining mold for the armature assembly of the relay according to claim 8, characterized in that, It also includes a second insert (17), the positioning post (16) is connected to the second insert (17), the first insert (13) is provided with a first positioning hole (131), and the positioning post (16) extends through the through hole (203) to the first positioning hole (131).

10. The machining mold for the armature assembly of the relay according to claim 1, characterized in that, It also includes a flow channel (18), and the number of cavities (10) is four, with the flow channel (18) connecting the four cavities (10).

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