CN218462405U

CN218462405U - Fine punching die

Info

Publication number: CN218462405U
Application number: CN202222827678.XU
Authority: CN
Inventors: 张秀明; 丁展龙; 李建
Original assignee: Zhuhe Xiamen Precision Circuit Technology Co ltd
Current assignee: Zhuhe Xiamen Precision Circuit Technology Co ltd
Priority date: 2022-10-26
Filing date: 2022-10-26
Publication date: 2023-02-10
Anticipated expiration: 2032-10-26

Abstract

The utility model discloses a die-cut mould that becomes more meticulous, including last mold core and lower mold core, go up the mold core with be provided with location structure down between the mold core, it includes fixed plate, stripper and drift to go up the mold core, the stripper sets up in the fixed plate below, the vertical setting of drift, drift top and fixed plate fixed connection, the bottom pierces through the stripper, the lower mold core includes die board, layer board and etching sword, the layer board sets up in the die board below, the etching sword is fixed to be set up at the die board top. Use the utility model discloses carry out die-cut reducible die-cut location number of times, avoid fixing a position many times and lead to the great condition of combination tolerance, reduce the influence to product machining precision, the product size precision that comes is cut out to the institute is higher, satisfies the processing requirement relatively easily, is favorable to improving enterprise competitiveness. According to specific processing requirements, the position height of the etching knife is correspondingly arranged, and the die can simultaneously perform punching blanking and half-cutting treatment.

Description

Fine punching die

Technical Field

The utility model relates to a die-cut mould technical field, in particular to die-cut mould becomes more meticulous.

Background

With the gradual development of the electronic industry, the requirement on the processing precision of FPC products is higher and higher. In actual production, partial FPC products are difficult to be formed at one time, and multiple punching forming is carried out by using multiple punching dies. Many times of die-cut shaping need carry out location many times, and many times of location can produce combination tolerance inevitable, influences the machining precision of FPC product, and the FPC product of processing out is difficult to satisfy the processing requirement.

For example, the structure of a conventional FPC product is shown in fig. 1, and the product includes three layers of an FPC layer 51, a double-sided adhesive layer 52 and a release paper layer 53, which are sequentially arranged, wherein the outer contour portion of the product needs to be half-cut (the FPC layer and the double-sided adhesive layer are punched off, and the release paper layer is not broken), and the inner slot 54 needs to be blanked, so that the FPC product cannot be processed by using a composite steel die when being punched off. Therefore, in order to produce and mold the FPC product, a pair of steel molds is used for blanking, and a pair of etching knife molds is used for half-cutting.

The punching outline of the steel die is shown in a dotted line frame of fig. 3, the punching outline of the etching cutting die is shown in a dotted line frame of fig. 4, the punching outline corresponds to the two punching dies, the whole product structure to be punched is shown in fig. 2, the steel die is used for positioning through the first positioning hole 1 during punching, and the etching die is used for positioning through the second positioning hole 2 during punching. The positioning tolerance of the two pairs of dies is +/-0.035 mm, and after the dies are combined for use, the combination tolerance is +/-0.07 mm, so that the machining requirements of +/-0.05 cannot be met, and improvement is needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a die-cut mould becomes more meticulous to reduce die-cut location number of times, improve the machining precision.

In order to realize the purpose, the utility model discloses a technical scheme as follows:

the utility model provides a die-cut mould that becomes more meticulous, includes mold core and lower mold core, go up the mold core with be provided with location structure down between the mold core, it includes fixed plate, stripper and drift to go up the mold core, the stripper sets up in the fixed plate below, the vertical setting of drift, drift top and fixed plate fixed connection, the stripper is penetrated to the bottom, the lower mold core includes die board, layer board and etching sword, the layer board sets up in the die board below, the etching sword is fixed to be set up at the die board top.

Furthermore, the etching knife comprises a knife edge part and a base part, the knife edge part is used for cutting, and the base part is fixedly connected to the bottom end of the knife edge part and embedded in the concave template.

Further, the knife-edge part is provided with a first cutting surface and a second cutting surface which are intersected, and an included angle formed between the first cutting surface and the second cutting surface ranges from 25 degrees to 35 degrees.

Further, the vertical height of the knife edge part is 0.5-1.0 mm, and the height of the base part is 1.0-1.4 mm.

Furthermore, the whole etching knife is in a rectangular frame shape.

Furthermore, a plurality of etching knives are arranged, a knife mold bottom plate is arranged at the bottom of each etching knife, and the knife mold bottom plates are fixedly connected with the etching knives and embedded into the top of the concave template.

Furthermore, the etching knives are arranged in a matrix type interval arrangement.

Furthermore, the stripper plate and the supporting plate are provided with a blanking hole which is communicated up and down, and the position of the punch corresponds to the position of the blanking hole up and down.

Furthermore, the positioning structure comprises an avoidance hole and a positioning pin which are correspondingly arranged from top to bottom, the positioning pin is fixedly connected with the lower mold core, the top of the positioning pin protrudes out of the top end face of the concave template, the avoidance hole is formed in the bottom of the discharging plate, and the shape of the avoidance hole is matched with that of the positioning pin.

Furthermore, the positioning pins are four and are respectively arranged at the edges of four corners of the concave template.

The utility model discloses following beneficial effect has:

1. the die can be used for punching and can reduce the punching and positioning times, the condition that the combination tolerance is large due to repeated positioning is avoided, the influence on the processing precision of a product is reduced, the size precision of the punched product is high, the processing requirement is easily met, and the die is favorable for improving the enterprise competitiveness.

2. The position height of the etching knife is correspondingly arranged according to the processing requirement, so that the die can simultaneously carry out punching blanking and half-cutting treatment.

Drawings

Fig. 1 is a schematic structural diagram of an FPC product.

Fig. 2 is a schematic structural diagram of a prior art full-page product to be punched.

FIG. 3 is a schematic view of a prior art steel die cut profile.

FIG. 4 is a schematic view of a prior art etched die cut profile.

Fig. 5 is a schematic structural diagram of the present invention.

Fig. 6 is a partially enlarged view of the structure of part i in fig. 5.

Fig. 7 is a schematic view of the die-cut state of the present invention.

Fig. 8 is a partially enlarged view of part ii of fig. 7.

FIG. 9 is a schematic view of the three-dimensional structure of the etching knife of the present invention.

FIG. 10 is a schematic cross-sectional view of an etching blade according to the present invention.

Fig. 11 is a schematic view of a three-dimensional structure of the etching knife of the present invention.

FIG. 12 is a schematic view of the connection structure between the etching knife and the bottom plate of the cutting die according to the present invention.

Fig. 13 is the utility model discloses treat die-cut full-page product structure sketch map.

Fig. 14 is a schematic view of the die-cut profile of the present invention.

Description of the main component symbols: 1. a first positioning hole; 2. a second positioning hole; 3. punching the profile by a punch; 4. punching the profile by an etching knife; 5. FPC products; 51. an FPC layer; 52. a double-sided adhesive layer; 53. a release paper layer; 54. a slot; 6. an upper mold core; 61. a fixing plate; 62. a stripper plate; 63. a punch; 7. a lower mold core; 71. a cavity plate; 711. a blanking hole; 72. etching a knife; 721. a blade edge portion; 7211. a first cutting surface; 7212. a second cut surface; 722. a base part; 723. a cutting die base plate; 7231. a blanking hole; 73. a pallet; 731. a blanking hole; 8. a positioning structure; 81. avoiding holes; 82. positioning pins; 9. a third positioning hole; a. the included angle between the first cutting surface and the second cutting surface; h1, the height of the blade part; h2, base height.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

As shown in fig. 5-8, the utility model discloses a die-cut mould becomes more meticulous, including last mold core 6 and lower mold core 7, go up mold core 6 and be provided with location structure 8 down between the mold core 7, go up mold core 6 and include fixed plate 61, stripper 62 and drift 63, stripper 62 sets up in fixed plate 61 below, the vertical setting of drift 63, drift 63 top and fixed plate 61 fixed connection, the bottom pierces through stripper 62, lower mold core 7 includes die board 71, layer board 73 and etching sword 72, layer board 73 sets up in die board 71 below, etching sword 72 is fixed to be set up at die board 71 top.

As shown in fig. 9 and 10, the etching blade 72 includes a blade edge portion 721 and a base portion 722, the blade edge portion 721 is used for cutting, and the base portion 722 is fixedly connected to the bottom end of the blade edge portion 721 and embedded in the cavity plate 71. The base portion 722 is provided to facilitate mounting of the etching blade 72 and to enhance the overall structural strength. The embedded arrangement of the base portion 722 makes the installation of the etching blade 72 more stable. The cutting edge portion 721 has a first cutting surface 7211 and a second cutting surface 7212 which intersect, and an included angle α between the first cutting surface 7211 and the second cutting surface 7212 is 25 ° to 35 °. Preferably, the first and second cutting surfaces 7211 and 7212 are symmetrically arranged with respect to a vertical plane, and the cutting tips at the intersection of the two faces are directed vertically upward. The vertical height H1 of the blade edge portion 721 is 0.5 to 1.0mm, and the vertical height H1 of the blade edge portion 721 is set to about 0.8mm for facilitating the half-cut processing when the FPC product 5 in fig. 1 is processed. The base portion 722 has a square cross-sectional shape and a height H2 of 1.0 to 1.4mm, that is, a thickness of the base portion 722 is 1.0 to 1.4mm, and preferably, it is set to about 1.2 mm.

When the die is used for processing the FPC product 5 in fig. 1, the etching knife 72 is correspondingly rectangular frame-shaped as a whole, the shape and the number of the punches 63 correspond to those of the FPC product 5 in fig. 1, and the positions of the punches correspond to the positions of the punching outlines 4 of the etching knife up and down and are positioned in the frame-shaped outlines. When the product is processed in full page, a plurality of etching knives 72 are arranged at intervals in a matrix form, and a plurality of groups of punches 63 are correspondingly arranged. When a plurality of etching knives 72 are provided to facilitate the mounting and dismounting of the etching knives 72, as shown in fig. 11 and 12, a knife mold base plate 723 is provided at the bottom of the etching knives 72, and the knife mold base plate 723 is fixedly connected to each etching knife 72 at the same time and is embedded at the top of the cavity plate 71. The etching blade 72 and the blade mold base 723 may be integrally formed. In order to facilitate blanking, blanking

holes

711 and 731 which are vertically communicated are formed in the discharging plate 62 and the supporting plate 73, and the position of the punch 63 corresponds to the positions of the blanking holes 711 and 731 up and down. When the cutting die base plate 723 is arranged, the cutting die base plate 723 is correspondingly provided with blanking holes 7231.

The positioning structure 8 is used for positioning the full page product to be punched, and as one of the options, the positioning structure 8 comprises an avoiding hole 81 and a positioning pin 82 which are correspondingly arranged up and down, the positioning pin 82 is fixedly connected with the lower die core 7, the top of the positioning pin protrudes out of the top end face of the concave die plate 71, the avoiding hole 81 is arranged at the bottom of the discharging plate 62, and the shape of the avoiding hole is matched with that of the positioning pin 82. The four positioning pins 82 are arranged at the four corner edges of the cavity plate 71.

When the die is used for punching the FPC product 5 shown in fig. 1, correspondingly, only one set of positioning holes of the full-page product to be punched needs to be formed, that is, only the third positioning hole 9 needs to be formed as shown in fig. 13. The third positioning holes 9 are located outside the die cutting range of the die, and the specific number and positions of the third positioning holes are set according to the processing requirements and are used for positioning at one time. The full-page product to be punched is matched and positioned with the positioning pin 82 through the third positioning hole 9, and a plurality of FPC products 5 shown in figure 1 can be obtained through one-time punching after positioning. During punching, the punching outline 4 of the etching knife is shown as a dotted line part in fig. 14, the punching outline 3 of the punch is shown as a solid line part positioned at the inner side of the punching outline 4 of the etching knife in fig. 14, the position height of the etching knife 72 is adjusted according to the thickness conditions of the FPC layer 51 and the double-sided adhesive layer 52, the half-cutting effect of the appearance of the FPC product 5 can be realized, and the position height of the bottom end of the punch 63 is adjusted according to the integral thickness of the FPC product 5, so that the blanking processing of the inner slotted hole 54 of the FPC can be realized.

Therefore, the die can be used for punching, so that the punching positioning times can be reduced, the condition that the combination tolerance is larger due to repeated positioning is avoided, the influence on the processing precision of the product is reduced, the size precision of the punched product is higher, the processing requirement is easily met, and the enterprise competitiveness is favorably improved.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A die-cut mould that becomes more meticulous which characterized in that: the upper die core comprises a fixed plate, a stripper plate and a punch, the stripper plate is arranged below the fixed plate, the punch is vertically arranged, the top of the punch is fixedly connected with the fixed plate, the bottom of the punch penetrates through the stripper plate, the lower die core comprises a concave die plate, a supporting plate and an etching knife, the supporting plate is arranged below the concave die plate, and the etching knife is fixedly arranged at the top of the concave die plate.

2. A fine blanking die as claimed in claim 1, wherein: the etching knife comprises a knife edge part and a base part, the knife edge part is used for cutting, and the base part is fixedly connected to the bottom end of the knife edge part and embedded in the concave template.

3. A fine blanking die as claimed in claim 2, wherein: the knife edge part is provided with a first cutting surface and a second cutting surface which are intersected, and the included angle between the first cutting surface and the second cutting surface is 25-35 degrees.

4. A fine blanking die as claimed in claim 2, wherein: the vertical height of the knife edge part is 0.5-1.0 mm, and the height of the base part is 1.0-1.4 mm.

5. A fine blanking die according to claim 1, wherein: the whole etching knife is in a rectangular frame shape.

6. A fine blanking die as claimed in claim 1 or 2, wherein: the etching knife is provided with a plurality of etching knives, the bottom of each etching knife is provided with a knife die bottom plate, and the knife die bottom plates are fixedly connected with the etching knives and embedded into the tops of the concave die plates.

7. A fine blanking die as claimed in claim 1, wherein: the etching knife is provided with a plurality of etching knives which are arranged at intervals in a matrix form.

8. A fine blanking die as claimed in claim 1, wherein: the stripper plate and the supporting plate are provided with blanking holes which are communicated up and down, and the position of the punch corresponds to the position of the blanking holes up and down.

9. A fine blanking die according to claim 1, wherein: the positioning structure comprises an avoidance hole and a positioning pin which are correspondingly arranged up and down, the positioning pin is fixedly connected with the lower mold core, the top of the positioning pin protrudes out of the top end face of the concave mold plate, the avoidance hole is formed in the bottom of the stripper plate, and the shape of the avoidance hole is matched with that of the positioning pin.

10. A fine blanking die as claimed in claim 9, wherein: the locating pins are four and are respectively arranged at the edges of the four corners of the concave template.