Injection mold for forming sliding block for forming key hole and key

Abstract

The utility model provides an injection mold of a forming sliding block for forming a key hole and a key. The injection mold comprises a sliding block main body and a forming insert, the sliding block main body is provided with a convex strip-shaped forming boss; the sliding block body is further provided with a containing notch and an insertion hole. The forming insert comprises an inserting column, a connecting boss and a key hole forming column which are connected in sequence, and the connecting boss protrudes out of the key hole forming column in the radial direction and is matched with the containing notch of the forming boss; the inserting column is inserted into the inserting hole of the sliding block main body; the connecting boss is matched in the accommodating notch of the sliding block main body and is in smooth transition with the outer surface of the forming boss; and the key hole forming column protrudes out of the forming boss. The key hole forming column can be directly machined through a grinding machine to meet the size and appearance requirements, and the problem that the sliding block jumps due to a thin-wall structure which is high in height and thin in thickness is solved.

Description

Technical Field

[0001] The utility model relates to the field of injection molds, in particular to an injection mold for forming a molding slide block and a button for molding a button hole. Background Art

[0002] Injection-molded products with buttons require tight tolerances on button hole diameter (e.g., ±0.003mm) and an A2 surface finish. In this case, if the button hole-forming pillars are directly molded onto the slider, EDM (Electrodischarge Machining) is the only option. However, EDM precision is difficult to achieve and the processing cost is high. Damage to the bosses requires welding or rebuilding the entire slider, which is both costly and difficult to achieve with the required dimensions and an A2 mirror finish. If the button hole forming column is set on an independent insert, and then the insert is assembled on the slider, on this basis, the button hole forming column can be directly ground to meet the size and appearance requirements. However, since the slider needs to be designed to form a forming boss for other parts of the forming button, according to the conventional method, the insert is cut along the edge of the forming boss, and a socket for inserting the insert is directly processed on the forming boss. The gap between the socket and the outer wall of the forming boss is small, forming a thin wall with a high height and a thin thickness (such as the thickness of the thin wall is 0.12mm), which is prone to jumping problems during production; it greatly affects the yield and productivity of the product. Utility Model Content

[0003] Therefore, in order to solve the above problems, the present invention provides an injection mold for forming a slider and a button for forming a button hole.

[0004] To achieve the above purpose, the technical solutions provided by the present invention are as follows:

[0005] A forming slider for forming a button hole, comprising a slider body and a forming insert; the slider body has a raised elongated forming boss; the slider body also has a receiving notch arranged on the forming boss and passing through both sides of the forming boss in the width direction, and an insertion hole located at the bottom of the receiving notch; the forming insert comprises an insertion column, a connecting boss and a button hole forming column connected in sequence, the connecting boss radially protrudes from the button hole forming column and is adapted to the receiving notch; the insertion column is inserted into the insertion hole of the slider body, the connecting boss fits in the receiving notch of the slider body and smoothly transitions to the outer surface of the forming boss; the button hole forming column protrudes from the forming boss.

[0006] Furthermore, on a projection plane perpendicular to the axial direction of the insertion column, the accommodating notch and the connecting boss are both square.

[0007] Furthermore, on a projection plane perpendicular to the axial direction of the insertion column, the accommodating notch and the connecting boss are both rectangular.

[0008] Furthermore, the insertion column and the connecting boss are not coaxial.

[0009] Furthermore, on a projection plane perpendicular to the width direction of the forming boss, the accommodating notch and the connecting boss are both in the shape of an inverted trapezoid that is wider at the top and narrower at the bottom.

[0010] Furthermore, the insertion column is also provided with a radially penetrating fixing notch, and the slider body is also provided with a pin hole radially penetrating the insertion hole, and the pin hole also corresponds to the fixing notch of the insertion column; it also includes a pin member, which is inserted into the pin hole and the fixing notch of the insertion column.

[0011] Furthermore, the latch hole passes through both sides of the slider body so that both ends of the latch are exposed.

[0012] Furthermore, the forming boss has integrally connected forming protrusions on both sides of the accommodating notch.

[0013] A button injection mold at least comprises the above-mentioned molding slider for molding the button hole.

[0014] The technical solution provided by the utility model has the following beneficial effects:

[0015] The forming boss is designed with accommodating notches running through both sides of the width to eliminate the need for tall, thin-walled structures. Simultaneously, a connecting boss is added to the forming insert to mate with the accommodating notch. This connecting boss fits within the accommodating notch of the slider body and smoothly transitions into the outer surface of the forming boss, forming a complete key forming structure. This allows the button hole forming post to be directly ground to meet dimensional and appearance requirements, while preventing the slider from bouncing due to tall, thin-walled structures. Furthermore, the insert can be directly replaced during mold repair, making it convenient and cost-effective. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG2 is a schematic structural diagram of a forming slider for forming a button hole in an embodiment;

[0017] Figure 2 Shown Figure 1 A magnified schematic diagram of area A in the middle;

[0018] Figure 3 FIG2 is a schematic diagram of a partial structural decomposition of a forming slider for forming a button hole in an embodiment;

[0019] Figure 4 The figure shows a partial structural cross-sectional view of a forming slider for forming a button hole in an embodiment;

[0020] Figure 5The figure shows a partial structural diagram of the slider body in the embodiment;

[0021] Figure 6 Shown is a schematic diagram of the slider body in the embodiment;

[0022] Figure 7 Shown is a schematic diagram of a molding insert in an embodiment;

[0023] Figure 8 Shown is a side view of a mold insert in one embodiment. DETAILED DESCRIPTION

[0024] To further illustrate various embodiments, the present invention is provided with accompanying drawings. These drawings form part of the disclosure of this invention and are primarily used to illustrate the embodiments and, in conjunction with the relevant description in the specification, to explain the operating principles of the embodiments. By referring to these drawings, those skilled in the art will understand other possible implementations and the advantages of this invention. The components in the figures are not drawn to scale, and similar reference numerals are generally used to represent similar components.

[0025] In the description of the present invention, terms such as "up", "down", "left", "right", "front", and "back" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limiting the present invention.

[0026] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0027] Reference Figures 1 to 8 As shown, the present embodiment provides a molding slider for molding a button hole, comprising a slider body 10 and a molding insert 20; the slider body 10 has a raised, long strip-shaped molding boss 11; the slider body 10 also has an accommodating notch 12 provided on the molding boss 11 and passing through both sides of the molding boss 11 in the width direction, and an insertion hole 13 located at the bottom of the accommodating notch 12; as in the present embodiment, the accommodating notch 12 is located in the middle position in the length direction of the molding boss 11, and the accommodating notch 12 forms a notch structure similar to a U-shape, wherein the bottom of the accommodating notch 12 is slightly higher than the bottom of the molding boss 11, that is, a thinner wall 15 is reserved, but the thin wall 15 is low in height and is not prone to bouncing. Of course, in other embodiments, the accommodating notch 12 can also be fully extended to the bottom of the molding boss 11 to completely eliminate the thin wall 15.

[0028] The molding insert 20 includes an insertion column 23, a connecting boss 22 and a button hole molding column 21 connected in sequence, the connecting boss 22 radially protrudes from the button hole molding column 21 and is adapted to the accommodating notch 12; the insertion column 23 is inserted into the insertion hole 13 of the slider body 10, the connecting boss 22 is fitted into the accommodating notch 12 of the slider body 10 and smoothly transitions to the outer surface of the molding boss 11; the button hole molding column 21 is protruding from the molding boss 11 and is used to form a button hole.

[0029] In this embodiment, the molding boss 11 is provided with receiving notches 12 extending along both sides of the width to eliminate the need for a tall, thin-walled structure. Simultaneously, a connecting boss 22 is added to the molding insert 20 to mate with the receiving notches 12. The connecting boss 22 fits within the receiving notches 12 of the slider body 10 and smoothly transitions with the outer surface of the molding boss 11, forming a complete key molding structure. Thus, thanks to the design of the independent molding insert 20, the button hole molding post 21 can be directly ground to meet dimensional and appearance requirements. The slider (referring to the slider body 10) also avoids the problem of bounce caused by a tall, thin-walled structure. Furthermore, the insert can be directly replaced during mold repair, making it convenient and cost-effective to repair.

[0030] Furthermore, in this embodiment, on the projection plane perpendicular to the axial direction of the insertion column 23, the receiving notch 12 and the connecting boss 22 are both square, specifically rectangular, such as Figure 6 As shown, the receiving notch 12 is rectangular; this prevents the mold insert 20 from being rotated 90° during assembly. Furthermore, the insertion post 23 and the connecting boss 22 are not coaxial; the insertion post 23 is offset to one side of the connecting boss 22. Consequently, when the mold insert 20 is rotated 180° for assembly, the connecting boss 22 does not smoothly transition with the outer surface of the molding boss 11. One side protrudes from the sidewall of the molding boss 11, while the other side is recessed. This allows for intuitive confirmation of reverse installation, providing a foolproof approach. The receiving notch 12 is designed in a square shape to facilitate wire-cut machining.

[0031] More specifically, on a projection plane perpendicular to the width direction of the forming boss 11, as shown in FIG. Figure 5 and Figure 8 As shown, the receiving notch 12 and the connecting boss 22 are both in the shape of an inverted trapezoid that is wider at the top and narrower at the bottom, so that the molding insert 20 is easier to install from top to bottom.

[0032] Of course, in other embodiments, the structures of the accommodating notch 12 and the connecting boss 22 are not limited to this. For example, on the projection surface perpendicular to the axial direction of the insertion column 23, the accommodating notch 12 and the connecting boss 22 are both trapezoidal; or on the projection surface perpendicular to the width direction of the forming boss 11, the accommodating notch 12 and the connecting boss 22 are both square, etc.

[0033] Furthermore, the molding boss 11 has an integrally connected molding protrusion 111 on both sides of the accommodating notch 12; it is used to mold other parts of the key. Of course, in other embodiments, the shape of the molding protrusion 111 can be specifically designed according to the structure of the key, or the molding protrusion 111 can be directly deleted.

[0034] Furthermore, the insertion column 23 is also provided with a radially penetrating fixing notch 24, and the slider body 10 is also provided with a pin hole 14 radially penetrating the insertion hole 13, and the pin hole 14 also corresponds to the fixing notch 24 of the insertion column 23; it also includes a pin member 30, and the pin member 30 is inserted into the pin hole 14 and the fixing notch 24 of the insertion column 23, so that stable assembly of the slider body 10 and the molding insert 20 is achieved.

[0035] More specifically, the latch holes 14 extend through both sides of the slider body 10, exposing both ends of the latch member 30. This allows for easy removal of the molded insert 20 by pressing either end of the latch member 30. This allows for a simple and easy installation. Of course, in other embodiments, the securing method between the slider body 10 and the molded insert 20 is not limited to this.

[0036] Furthermore, this embodiment also provides an injection mold for a button, which at least includes the above-mentioned molding slider for molding the button hole.

[0037] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes can be made to the form and details of the present invention without departing from the spirit and scope of the present invention as defined by the appended claims, and all of these changes are within the scope of protection of the present invention.

Claims

1. A molding slider for molding a button hole, comprising a slider body and a molding insert; the slider body having a raised, elongated molding boss; characterized in that: The slider body also has a receiving notch arranged on the forming boss and passing through both sides of the forming boss in the width direction, and an insertion hole located at the bottom of the receiving notch; the forming insert includes an insertion column, a connecting boss and a button hole forming column connected in sequence, and the connecting boss radially protrudes from the button hole forming column and adapts to the receiving notch; the insertion column is inserted into the insertion hole of the slider body, and the connecting boss fits in the receiving notch of the slider body and smoothly transitions to the outer surface of the forming boss; the button hole forming column protrudes from the forming boss.

2. The forming slider for forming a button hole according to claim 1, characterized in that: On a projection plane perpendicular to the axial direction of the insertion column, the accommodating notch and the connecting boss are both square.

3. The forming slider for forming a button hole according to claim 2, characterized in that: On a projection plane perpendicular to the axial direction of the insertion column, the accommodating notch and the connecting boss are both rectangular.

4. The forming slider for forming a button hole according to claim 3, characterized in that: The insert column and the connecting boss are not coaxial.

5. The forming slider for forming a button hole according to claim 1 or 2, characterized in that: On a projection surface perpendicular to the width direction of the forming boss, the accommodating notch and the connecting boss are both in the shape of an inverted trapezoid that is wider at the top and narrower at the bottom.

6. The forming slider for forming a button hole according to claim 1, characterized in that: The insertion column is also provided with a radially penetrating fixing notch, and the slider body is also provided with a pin hole that radially penetrates the insertion hole, and the pin hole also corresponds to the fixing notch of the insertion column; it also includes a pin member, which is inserted into the pin hole and the fixing notch of the insertion column.

7. The forming slider for forming a button hole according to claim 6, characterized in that: The latch hole passes through both sides of the slider body so that both ends of the latch are exposed.

8. The forming slider for forming a button hole according to claim 1, characterized in that: The forming boss has integrally connected forming protrusions on both sides of the accommodating notch.

9. An injection mold for a button, characterized in that: At least includes the molding slider for molding a button hole according to any one of claims 1 to 8.

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