CN216068829U - Salient point forming die structure and die with same - Google Patents

Abstract

The utility model discloses a salient point forming die structure and a die with the same, wherein the die comprises an upper die set and a lower die set, a salient point forming die structure is arranged between the upper die set and the lower die set, the salient point forming die structure comprises a concave die plate and a stripper plate which can move close to the concave die plate, a forming stripper insert is arranged on the stripper plate, a forming cavity is formed on the forming stripper insert, a forming concave die core for forming a pit on a material belt is arranged on the concave die plate, when the forming concave die core forms the pit on the material belt, the material belt is extruded into the forming cavity to form salient points on the opposite positions of the pit, the forming concave die core comprises a forming convex part for forming the pit on the material belt, and the cross section of the forming convex part is rectangular. According to the utility model, the cross section of the forming convex part is set to be rectangular, so that the processing difficulty of the forming concave template mold core is reduced, and the service life of the forming concave template mold core is prolonged.

Description

Salient point forming die structure and die with same

[ technical field ] A method for producing a semiconductor device

The present disclosure relates to forming molds, and particularly to a bump forming mold structure and a mold having the same.

[ background of the utility model ]

The bump forming die utilizes the material ejecting belt on the forming female die core arranged on the female die insert component to form a pit at the lower side of the material belt and simultaneously extrudes the material belt into a forming cavity on the forming stripping insert to form bumps at the upper side of the material belt. The existing forming female die core is in a stepped cylindrical shape, the processing difficulty is high, and due to the small size of the forming female die core, the forming female die core adopting the stepped cylindrical shape is easy to damage, and the service life is short.

[ Utility model ] content

An object of the present application is to provide a bump forming mold structure, which reduces the processing difficulty of a forming cavity plate mold core and prolongs the service life of the forming cavity plate mold core by setting the cross section of a forming convex part to be rectangular.

The application is realized by the following technical scheme:

a salient point forming die structure comprises a concave die plate and a stripper plate which is movably close to the concave die plate, wherein a forming stripping insert is arranged on the stripper plate, a forming cavity is formed on the forming stripping insert, a forming concave die plate die core for forming a pit in a material strip is arranged on the concave die plate, the forming concave die plate die core extrudes the material strip into the forming cavity when the pit is formed in the material strip so that salient points are formed in the material strip at the opposite positions of the pit, the forming concave die plate die core comprises a forming convex part for forming the pit in the material strip, and the cross section of the forming convex part is rectangular.

The convex point forming die structure comprises a die core base and the forming convex part arranged on the die core base.

In the above bump forming mold structure, the core base and the forming protrusion are integrally formed.

In the above bump forming die structure, the cross-sectional area of the forming protrusion gradually increases in a direction approaching the core base.

In the above bump forming mold structure, the forming convex part is close to one side of the mold core base and is chamfered.

In the above bump forming mold structure, the number of the forming protrusions is plural, and the plural forming protrusions are arranged on the core base at intervals.

According to the bump forming die structure, the cross section of the die core base is rectangular.

According to the bump forming die structure, the cross section of the forming cavity is circular.

In the above bump forming mold structure, the axial height of the forming protrusion is 0.15mm to 0.25 mm.

The second objective of the present application is to provide a mold with a bump forming mold structure, which comprises an upper mold set and a lower mold set, wherein the bump forming mold structure is arranged between the upper mold set and the lower mold set.

Compared with the prior art, the utility model has the following advantages:

compared with the existing forming concave template mold core which adopts a cylindrical shape, the forming concave template mold core has the advantages of easy processing and difficult breakage by arranging the cross section of the forming convex part into a rectangle, thereby not only reducing the processing difficulty of the forming concave template mold core, but also prolonging the service life of the forming concave template mold core.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below.

FIG. 1 is a schematic structural diagram of a mold having a bump forming mold structure according to an embodiment of the present disclosure;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic diagram illustrating a principle of forming bumps on a tape by using a mold having a bump forming mold structure according to the present application;

FIG. 4 is an enlarged view of a portion of FIG. 3 at B;

FIG. 5 is a top view of a formed cavity plate core in an embodiment of the present application;

FIG. 6 is a bottom view of a formed stripper insert according to an embodiment of the present application;

FIG. 7 is a top view of the tape;

fig. 8 is a bottom view of the tape;

fig. 9 is a left side view of the tape.

[ detailed description ] embodiments

In order to make the technical problems, technical solutions and advantageous effects solved by the present application more clear and obvious, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

The mold with the bump forming mold structure shown in fig. 1-6 comprises an upper mold set 5 and a lower mold set 6, and a bump forming mold structure is arranged between the upper mold set 5 and the lower mold set 6. The upper die set 5 comprises an upper die base 51, an upper backing plate 52 and a punch fixing plate 53 which are sequentially stacked from top to bottom, and the lower die set 6 comprises a lower die base 61 and a lower backing plate 62 which are sequentially stacked from bottom to top. The bump forming mold structure comprises a concave template 1 arranged on the lower padding plate 62 and a stripper plate 2 arranged on the upper mold set 5 and located below the punch fixing plate 53, wherein a stripper plate 2 is provided with a stripper insert component 7, the stripper insert component 7 comprises a forming stripper insert 3, a forming cavity 31 is formed on the forming stripper insert 3, a concave template insert component 8 is arranged on the concave template 1, and the concave template insert component 8 comprises a forming concave template mold core 4 for forming a concave pit 300 on the material strip 100. As shown in fig. 3, when the forming cavity plate mold core 4 forms the concave pit 300 on the material strip 100, the material strip 100 is extruded into the forming cavity 31 so that the material strip 100 forms the convex point 200 at the opposite position of the concave pit 300, the forming cavity plate mold core 4 comprises a forming convex part 42 for forming the concave pit 300 on the material strip 100, and the cross section of the forming convex part 42 is rectangular. As shown in fig. 6-8, the forming cavity plate mold core 4 extrudes the material strip 100 into the forming cavity 31 when the concave pit 300 is formed on the lower side of the material strip 100, so that the upper side of the material strip 100 forms the convex point 200. The cross section of the forming convex part 42 is rectangular, the forming convex part 42 is square or cuboid, and the forming convex part 42 in the shape is cylindrical compared with the existing forming concave template mold core, so that the forming concave template mold core has the advantages of easiness in processing and difficulty in breaking.

Specifically, the cross section of the forming cavity 31 is circular. The cross section shape of the forming cavity 31 determines the shape of the salient points of the material strip 100, one side of the material strip 100, where the salient points 200 are formed, is a functional surface, the specific shape of the salient points 200 is set according to the requirements of customers and cannot be changed, most of the existing salient point shapes are cylindrical, and the existing forming cavity template core is set to be cylindrical in order to match the shape (cylindrical) of the salient points, which results in the problems of high processing difficulty and easy breakage. Since the lower side of the material belt 100 is the non-functional surface, and the shape of the concave pit 300 does not affect the functional surface of the material belt 100, the shape of the forming concave template mold core is set to be cubic or cuboid, so that the processing difficulty of the forming concave template mold core is reduced and the service life of the forming concave template mold core is prolonged while the convex points 200 are formed on the upper side of the material belt 100.

Further, as a preferred embodiment of the present invention, not limited thereto, the forming cavity plate core 4 includes a core base 41 and the forming protrusion 42 provided on the core base 41. Preferably, the core base 41 has a rectangular cross section. The structure is convenient to process, and has stable structure and long service life.

Further, as a preferred embodiment of the present invention, but not limited thereto, the number of the forming protrusions 42 is plural, and the plural forming protrusions 42 are provided at intervals on the core base 41. As can be seen from fig. 5, the plurality of forming protrusions 42 are arranged at intervals in a rectangular shape. The number and arrangement of the forming protrusions 42 are determined by the shape of the material belt. Wherein, the arrangement of a plurality of the forming convex parts 42 is beneficial to improving the production efficiency.

Further, as a preferred embodiment of the present invention, not limited thereto, the core base 41 is integrally formed with the forming protrusion 42. The device is convenient to process and has long service life.

Further, as a preferred embodiment of the present invention, not limited thereto, the cross-sectional area of the forming protrusion 42 gradually increases in a direction approaching the core base 41. This arrangement improves the deformation resistance of the forming protrusion 42 and prolongs the service life.

Preferably, the forming protrusion 42 is chamfered on a side adjacent to the core base 41. This arrangement can reduce stress at the joint of the forming protrusion 42 and the core base 41, improve deformation resistance, and prolong the service life.

Further, as a preferred embodiment of the present invention, not limiting, the axial height of the shaped projection 42 is 0.15mm to 0.25 mm. This arrangement prevents the forming lugs 42 from being too long, and prolongs their service life.

It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present application. Furthermore, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing is illustrative of one or more embodiments provided in connection with the detailed description and is not intended to limit the disclosure to the particular forms disclosed. Similar or identical methods, structures, etc. as used herein, or several technical inferences or substitutions made on the concept of the present application should be considered as the scope of the present application.

Claims (10)

1. A salient point forming die structure comprises a concave die plate (1) and a stripping plate (2) which is movably close to the concave die plate (1), and is characterized in that a forming stripping insert (3) is arranged on the stripping plate (2), a forming cavity (31) is formed in the forming stripping insert (3), a forming concave die plate die core (4) used for forming a concave pit in a material belt is arranged on the concave die plate (1), when the forming concave die plate die core (4) forms the concave pit in the material belt, the material belt is extruded into the forming cavity (31) to enable the material belt to form salient points at the opposite positions of the concave pit, the forming concave die plate die core (4) comprises a forming convex part (42) used for forming the concave pit in the material belt, and the cross section of the forming convex part (42) is rectangular.

2. The bump forming die structure according to claim 1, wherein the forming cavity plate core (4) includes a core base (41) and the forming protrusion (42) provided on the core base (41).

3. The bump forming die structure according to claim 2, wherein the core base (41) is integrally formed with the forming boss (42).

4. The bump forming die structure according to claim 2, wherein a cross-sectional area of the forming protrusion (42) is gradually increased in a direction approaching the core base (41).

5. The bump forming die structure according to claim 2, wherein the forming convex portion (42) is chamfered on a side thereof immediately adjacent to the core base (41).

6. The bump forming die structure according to claim 2, wherein the number of the forming protrusions (42) is plural, and the plural forming protrusions (42) are provided at intervals on the core base (41).

7. The bump forming die structure according to claim 2, wherein the core base (41) has a rectangular cross section.

8. The bump forming die structure according to claim 1, wherein the forming cavity (31) has a circular cross section.

9. The bump forming die structure according to claim 1 or 2, wherein the axial height of the forming protrusion (42) is 0.15mm to 0.25 mm.

10. A mould having a bump forming mould structure comprising an upper mould set (5) and a lower mould set (6), characterised in that a bump forming mould structure according to any of claims 1-9 is provided between the upper mould set (5) and the lower mould set (6).

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