TW201424879A - Trimming mold and punch thereof - Google Patents

Abstract

A trimming mold comprises a first die base assembly, a second die base assembly, and a punch. The first die base assembly includes a fixing portion; the second die base assembly is positioned opposite to the first die base assembly; the second die base assembly includes a mold cavity portion; the mold cavity portion has a mold cavity and a mold cavity inner wall; the mold cavity inner wall has a plurality of first slanted grooves; the punch has a fixing end portion and a trimming end portion positioned opposite to the fixing end portion; the fixing end portion is disposed at the fixing portion; the trimming end portion is positioned corresponding to the mold cavity; the peripheral surface of the trimming end portion includes a plurality of second slanted grooves. This invention also provides a punch.

Description

Punching die and its punch

The present invention relates to a mold and a punch thereof, and more particularly to a die cutting die and a punch thereof.

In the past ten years, due to the rapid development of the electronics industry, the sales of electronic consumer products such as mobile phones and notebook computers have increased. The trend of these products in recent years tends to be small, light, strong, and easy to dissipate heat, so that the components they need to be metallized and refined, and the use of semiconductor or non-traditional processes for component production has high equipment costs. The materials used in the process are limited, the aspect ratio of the product is small, and the three-dimensional shape components are not easy to be produced.

Metal plastic processing is an important key technology for mass production of metal parts in traditional manufacturing. It has high production efficiency, material saving, high precision, Near Net Shape, and finished products with excellent mechanical properties and materials. The application is not limited, simplifies the above advantages of the part design, and meets the current environmental requirements of the green industry, so that the application of metal forming in the manufacture of micro-components is attracting more and more attention, and is called micro-metal forming.

Please refer to FIG. 1A and FIG. 1B . FIG. 1A is a partial schematic view of a punching die of the prior art before the punching operation of the punching die; FIG. 1B is a part of the punching die of FIG. 1A and the punching work of the punching plate of the punching die of FIG. 1A schematic diagram.

As shown in FIGS. 1A and 1B, the die cutting die 5 includes a first die mount assembly (eg, an upper die mount assembly) and a second die mount assembly (eg, a lower die mount assembly) corresponding to the first die mount assembly. . Wherein, the first die base assembly is configured with a punch The head 50 and the pressure plate 51; the second mold base assembly includes a module 52 having a cavity 520.

When the operator wants to perform a punching operation on a plate 53, the plate 53 can be fixed at the processing position by the press plate 51 and the module 52 of the punching die, and then the downward punching force F of the punch 50 can be utilized. The punching operation of the sheet 53 is completed (for example, a circular hole is formed in the central portion of the sheet 53; or, a portion of the side of the sheet 53 is cut).

However, since the outer peripheral surface of the punch 50 of the conventional die-cutting die 5 or the inner wall of the cavity 520 of the module 52 of the second die block assembly does not have a special structural design, the processing quality of the plate 53 is not as good as expected. .

In view of the above, the present invention provides a die-cutting die and a punch capable of improving the molding quality of a sheet.

In accordance with the above objects, the present invention provides a die cutting die comprising a first die block assembly, a second die block assembly, and a punch. The first die holder assembly includes a fixing portion; the second die holder assembly is positioned relative to the first die holder assembly, the second die holder assembly includes a cavity portion, the cavity portion has a cavity and the inner wall of the cavity, and the inner wall of the cavity The utility model has a plurality of first oblique grooves; the punch has a fixed end portion and a punching end portion which is opposite to the fixed end portion, the fixed end portion is disposed at the fixing portion, the punching end portion is corresponding to the cavity portion, and the peripheral surface of the punching end portion is Contains a plurality of second oblique grooves.

According to the punching die of the embodiment of the present invention, the first die holder assembly further includes a bolt member and a pressure plate corresponding to the cavity portion, and the bolt member One end is disposed at the fixing portion, and the other end of the bolt member is disposed on the pressure plate; the first mold base assembly and the second mold base assembly further comprise a guide post, and the first mold base assembly further comprises a guide column lining corresponding to the guide post The fixing portion further comprises a punch back plate, a punch fixing plate and a fixing member for engaging the punch back plate and the punch fixing plate, and the fixed end of the punch abuts against the punch back plate and is fixed at the punch fixing The plate portion is composed of a module and a mold base.

According to the punching die of the embodiment of the invention, the first oblique grooves are arranged at intervals.

According to the punching die of the embodiment of the invention, the groove patterns of the first oblique grooves are cylindrical grooves, V-shaped grooves or curved grooves.

According to the punching die of the embodiment of the invention, the second oblique grooves are arranged at intervals.

According to the punching die of the embodiment of the invention, the lengths of the second inclined grooves are uniform.

According to the punching die of the embodiment of the invention, the groove patterns of the second inclined grooves are cylindrical grooves, V-shaped grooves or curved grooves.

The invention further provides a punch comprising a die cut end. The peripheral surface of the punched end portion includes a plurality of oblique grooves.

According to the punch of the embodiment of the present invention, the oblique grooves are arranged at intervals.

According to the punch of the embodiment of the present invention, the lengths of the oblique grooves described above are uniform.

The punch according to the embodiment of the present invention, the above-mentioned oblique grooves The groove shape is a cylindrical groove, a V-shaped groove or a curved groove.

One of the features of the present invention is that the second oblique groove of the punch can reduce the shearing force of the punch on the plate during the punching operation to improve the forming quality of the plate.

The above described objects, features, and characteristics of the present invention will become more apparent from the aspects of the invention.

Please refer to FIG. 2A. FIG. 2A is a schematic view of a punching die before punching a sheet material according to an embodiment of the present invention. As shown in FIG. 2A, it shows the mold opening state of the punching die 1 (Trimming Mold). The die cutting die 1 is used for the die cutting operation of the sheet material 20 and comprises a first die holder assembly 11 , a second die holder assembly 12 and a punch 13 . The first die holder assembly 11 of the embodiment is used as the upper die holder assembly; and the second die holder assembly 12 is used as the lower die holder assembly. However, the relationship between the actual design requirements of the mold is not limited thereto.

The first die holder assembly 11 includes a fixing portion 110; the second die holder assembly 12 is positioned relative to the first die holder assembly 11. The second die holder assembly 12 includes a cavity portion 120 having a cavity 121 and a cavity inner wall W. The surface of the inner wall W of the cavity (the surface of the effective working area) has a plurality of first oblique grooves G1 (two or more first inclined grooves G1). In this embodiment, the cavity portion 120 is composed of a module 120a (lower module) and a die holder 120b (lower die holder). The above plate 20 is placed on the cavity portion 120.

The punch 13 is suitable for the die cutting die 1. The punch 13 has a fixed end 131 And a die cut end 132 that is positioned relative to the fixed end 131. The fixed end portion 131 is disposed at the fixing portion 110; the position of the punched end portion 132 corresponds to the cavity 121. The outer peripheral surface of the punched end portion 132 includes a plurality of second oblique grooves G2 (two or more second oblique grooves G2).

Specifically, the first die holder assembly 11 further includes a bolt member 111 and a pressure plate 112 positioned to correspond to the surface of the cavity portion 120. One end of the bolt member 111 is disposed on the fixing portion 110; the other end of the bolt member 111 is disposed on the binder plate 112. The bolt member 111 can be provided with a spring (not shown), and the spring is located between the fixing portion 110 and the pressure plate 112.

In addition, the first mold base assembly 11 and the second mold base assembly 12 further include a guide post 14 for guiding the die cutting die 1 to perform mold closing or mold opening; and the first mold base assembly 11 further includes corresponding guides. The post 14 prevents the guide post 14 from damaging the post bushing 140 of the first die block assembly 11 due to direct contact.

The fixing portion 110 further includes a punch back plate 110a, a punch fixing plate 110b, and a fixing member 15 that engages the punch back plate 110a and the punch fixing plate 110b. The fixed end portion 131 of the punch 13 abuts against the punch back plate 110a and is positioned on the punch fixing plate 110b.

Please refer to FIG. 2A to FIG. 2C at the same time. FIG. 2B is a partial schematic view of the punching die of the punching die of FIG. 2A for punching the plate; FIG. 2C is the punching die of FIG. 2A, after punching the punching work of the plate Schematic diagram.

As shown in the partial view of Fig. 2B, the surface of the inner wall W of the cavity has a plurality of first oblique grooves G1, wherein the first oblique grooves G1 are spaced apart. And the outer peripheral surface of the punched end portion 132 of the punch 13 includes A plurality of second oblique grooves G2. The second oblique grooves G2 are arranged at intervals, and the lengths of the second oblique grooves G2 are uniform to form an effective working area.

When the operator wants to perform a punching operation on the sheet 20, the sheet 20 can be placed on the cavity portion 120. When driving the die 1 , the first die base assembly 11 is brought close to the second die block assembly 12 by the guiding of the guide post 14 . As shown in FIG. 2B , the plate 20 is fixed to the pressing plate 112 and the module 120 a . between.

At this time (as shown in FIG. 2B), the second oblique groove G2 included in the peripheral surface of the punched end portion 132 of the punch 13 can be used while the punching operation is performed on the plate member 20 by the punch 13. The shearing force of the punch 13 against the plate 20 is reduced; at the same time, by using the first inclined grooves G1 of the inner wall W of the cavity, the shearing force of the plate 20 against the inner side of the cavity 121 can be reduced, thereby facilitating the lifting of the plate 20 Forming quality. After the punching operation is completed, the die cutting die 1 is in a closed mode state (as shown in Fig. 2C).

Please refer to FIG. 3. FIG. 3 is a schematic view showing a groove of the punching die and a groove of the inner wall of the cavity as a V-shaped groove according to another embodiment of the present invention.

As shown in FIG. 3, the groove shape of the first oblique groove G1 may be a V-shaped groove; and the groove shape of the second oblique groove G2 may also be a V-shaped groove. Of course, as the design is different, the grooves of the first oblique groove G1 and the second oblique groove G2 may be cylindrical grooves, curved grooves or other geometric grooves (for example: irregular shape) The groove is not limited to the disclosure of FIG. 3. From this, it can be seen that the shear forming quality of the sheet material 20 can also be improved by these types.

It is worth mentioning that the shape of the above punch is said to be a cylindrical punch. In the actual die-cutting die, in order to meet the punching shape or other requirements of the plate, the punch may be an elliptical column, a square column, a triangular column or other column type, and is not limited to the disclosure of the above embodiment. . Further, the oblique groove on the peripheral surface of the punched end portion of the punch may vary depending on the shape of the punch. In addition, the inclined groove around the punched end portion of the punch and the inner wall of the cavity (the first oblique groove and the second oblique groove) can also be applied to the shearing machine. The cutting plane of the cutter and the lower cutter.

In summary, the present invention is only described as a preferred embodiment or embodiment of the technical means for solving the problem, and is not intended to limit the scope of the invention. That is, the equivalent changes and modifications made in accordance with the scope of the patent application of the present invention or the scope of the invention are covered by the scope of the invention.

[previous technical part]

5‧‧‧punching die

50‧‧‧ Punch

51‧‧‧Billing plate

52‧‧‧ modules

520‧‧‧ cavity

53‧‧‧ plates

F‧‧‧punching force

[Part of the Invention]

1‧‧‧punching die

11‧‧‧First module base assembly

110‧‧‧Fixed Department

110a‧‧‧Backplane

110b‧‧‧punch fixing plate

111‧‧‧Bolts

112‧‧‧Pressure plate

12‧‧‧Second die base assembly

120‧‧‧Move

120a‧‧‧ module

120b‧‧‧ mold base

121‧‧‧ cavity

13‧‧‧ Punch

131‧‧‧Fixed end

132‧‧‧punched end

14‧‧‧ Guide column

140‧‧‧Guide column bushing

15‧‧‧Fixed parts

20‧‧‧ plates

G1‧‧‧ first oblique groove

G2‧‧‧second oblique groove

W‧‧‧ cavity wall

FIG. 1A is a partial schematic view of a conventional punching die before the punching operation of the punching plate.

FIG. 1B is a partial schematic view showing the punching operation of the punching die of FIG. 1A and the punching operation of the sheet.

2A is a schematic view of a punching die before punching a sheet material according to an embodiment of the present invention.

2B is a partial schematic view showing the punching operation of the punching die of FIG. 2A and the punching operation of the sheet.

2C is a schematic view of the punching die of FIG. 2A after the punching operation of the punching plate.

Fig. 3 is a schematic view showing the groove of the punching die and the inner wall of the cavity of the die-cutting die according to another embodiment of the present invention as a V-shaped groove.

112‧‧‧Pressure plate

120‧‧‧Move

120a‧‧‧ module

13‧‧‧ Punch

132‧‧‧punched end

20‧‧‧ plates

G1‧‧‧ first oblique groove

G2‧‧‧second oblique groove

W‧‧‧ cavity wall

Claims (14)

A die cutting die comprising: a first die holder assembly including a fixing portion; a second die holder assembly positioned relative to the first die holder assembly, the second die holder assembly including a cavity portion, the die The cavity portion has a cavity and an inner wall of the cavity, the inner wall of the cavity has a plurality of first oblique grooves; and a punch having a fixed end and a punched end positioned opposite the fixed end The fixed end portion is disposed at the fixing portion, and the punched end portion is located corresponding to the cavity, and a peripheral surface of the punched end portion includes a plurality of second oblique grooves. The die-cutting die of the first aspect of the invention, wherein the first die base assembly further comprises a bolt member and a pressure plate corresponding to the cavity portion, wherein one end of the bolt member is disposed at the fixing portion, The other end of the bolt member is disposed on the binder plate. The die-cutting die of claim 2, wherein the first die holder assembly and the second die block assembly further comprise a guide post, the first die block assembly further comprising a corresponding guide post Guide post bushing. The die-cutting die of claim 2, wherein the fixing portion further comprises a punch back plate, a punch fixing plate and a fixing member for engaging the punch back plate with the punch fixing plate, The fixed end of the punch abuts against the punch backing plate and is positioned on the punch fixing plate. A die-cutting die as described in claim 2, wherein the cavity portion It consists of a module and a mold base. The die-cutting die of claim 1, wherein the first oblique grooves are arranged at intervals. The die-cutting die of the first aspect of the invention, wherein the groove shape of the first oblique grooves is a cylindrical groove, a V-shaped groove or a curved groove. The die-cutting die of claim 1, wherein the second oblique grooves are arranged at intervals. The die-cutting die of claim 1, wherein the lengths of the second oblique grooves are the same. The punching die according to claim 1, wherein the groove shape of the second oblique grooves is a cylindrical groove, a V-shaped groove or a curved groove. A punch includes a die cut end, a peripheral surface of the punched end portion comprising a plurality of beveled grooves. The punch of claim 11, wherein the oblique grooves are arranged at intervals. The punch of claim 11, wherein the lengths of the oblique grooves are the same. The punch of claim 11, wherein the groove shape of the oblique groove is a cylindrical groove, a V-shaped groove or a curved groove.