CN210816961U - High-precision die for forming copper backlight plate stretching hole - Google Patents
High-precision die for forming copper backlight plate stretching hole Download PDFInfo
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- CN210816961U CN210816961U CN201921138948.8U CN201921138948U CN210816961U CN 210816961 U CN210816961 U CN 210816961U CN 201921138948 U CN201921138948 U CN 201921138948U CN 210816961 U CN210816961 U CN 210816961U
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Abstract
A high-precision die for forming a copper backlight plate stretching hole comprises an upper die base, a punch group, a lower die base and a female die cavity group; the head group comprises a pre-hole punch, a first stretching punch, a second stretching punch, a punching punch and a hole drawing punch, and the round angle of the stretching punch is formed; the female die cavity group comprises a pre-hole groove, a stretching groove, a punching groove and a hole drawing groove, wherein the pre-hole groove, the stretching groove, the punching groove and the hole drawing groove are arranged in one-to-one correspondence with the pre-hole punch, the stretching punch, the punching punch and the hole drawing punch. The utility model discloses not only reducible copper material shaping is strained, the product warp and the problem that the demoulding is not in the same direction as, and the concentricity precision is high, and position concentricity stability is good, can improve the yields of processing procedure production. In addition, the punching punch is changed from original free guiding to fixed guiding, the guide precision greatly improves the production time and the punch is difficult to wear and break, the service life of the die part can be effectively prolonged, and the production quality can be stably improved.
Description
Technical Field
The utility model relates to a mould especially relates to a high-accuracy mould of tensile hole shaping of copper board in a poor light.
Background art:
with the development of society, the electronic products are updated as fast as the dragon, and the requirements of people on mobile phones are higher and higher. The backlight source is an important part in the field of mobile phone screen manufacturing, and a backlight plate is arranged on the outer side of the backlight source and used for mounting and limiting the backlight source. In order to meet the demand of mobile phones developing toward light and thin, the backlight plate is usually made thinner and softer. The backlight plate is provided with a stretching hole (as shown in fig. 1) at a position corresponding to the camera or the lamp, and the stretching hole extends outwards to form a side edge 10 a. However, the backlight plate is thin and soft, so that the lateral edge 10a of the stretching hole is easy to be damaged and broken, the fold is deformed, and the heights are different in the punching process, and further the problems of poor light leakage, camera shooting and shooting effects of the mobile phone are caused. Particularly, compared with the conventional backlight plate made of copper alloy, the backlight plate made of copper alloy is higher in punching difficulty, and is easier to deform and crack during processing because the copper alloy is soft.
The utility model has the following contents:
based on this, the utility model discloses a main aim at provides a high-accuracy mould of tensile hole shaping of copper board in a poor light to solve the easy problem that is broken, the fold warp, the height differs of the tensile hole edge of traditional cell-phone piece in a poor light.
In order to achieve the aim, the utility model provides a high-precision die for forming the drawing hole of the copper backlight plate;
a high-precision die for forming a copper backlight plate stretching hole comprises an upper die base, a punch group, a lower die base and a female die cavity group; the punch is assembled on the bottom surface of the upper die base, the female die cavity group is arranged on the top surface of the lower die base, and the punch group and the female die cavity are arranged in an up-down opposite mode; the punch group comprises a pre-hole punch, a first stretching punch, a second stretching punch, a punching punch and a hole drawing punch, a feeding port and a discharging port are arranged on the copper backlight plate stretching hole forming high-precision die, and the pre-hole punch, the first stretching punch, the second stretching punch, the punching punch and the hole drawing punch are sequentially arranged from the feeding port to the discharging port; the pre-hole punch, the first stretching punch, the second stretching punch and the punching punch are all arranged in a cylindrical shape with a horizontal bottom surface, a round corner guiding structure is arranged between the side surfaces and the bottom end surface of the first stretching punch and the second stretching punch, and the round corner of the first stretching punch is larger than that of the second stretching punch; the female die cavity group comprises a pre-hole groove, a stretching groove, a punching groove and a hole drawing groove, wherein the pre-hole groove, the stretching groove, the punching groove and the hole drawing groove are arranged in a one-to-one correspondence with the pre-hole punch, the stretching punch, the punching punch and the hole drawing punch.
Furthermore, the first drawing punch and the second drawing punch have the same outer diameter, and the outer diameter of the first drawing punch is larger than that of the pre-hole punch and the punching punch.
Further, the outer diameter of the punching punch is larger than that of the pre-hole punch, and the maximum outer diameter of the hole drawing punch is larger than that of the stretching punch.
Furthermore, the shapes and the specifications of the pre-hole groove, the first stretching groove, the second stretching groove and the hole drawing groove are consistent with the external dimensions of the corresponding punches, and the groove depths of the first stretching groove and the second stretching groove are consistent.
Furthermore, the depth of the punching groove is consistent with that of the pre-hole groove, the depth of the hole drawing groove is larger than that of the punching groove, and the inner diameter of the hole drawing groove is also larger than that of the stretching groove.
Furthermore, the punching groove comprises an outer groove and an inner groove arranged on the bottom surface of the outer groove, the outer groove is consistent with the size specification of the hole drawing groove, and the inner groove is consistent with the external dimension of the punching punch.
Furthermore, a black nickel layer is arranged on the outer surface of each punch of the punch group.
Furthermore, a lubricating groove is further formed in the upper die, a stripper plate is arranged at the bottom end of the upper die, the lubricating groove is connected to the stripper plate through an oil pipe, and the punch set penetrates through the stripper plate from top to bottom and can extend out of the stripper plate from bottom to top.
To sum up, the utility model discloses a set up cope match-plate pattern subassembly, drift subassembly and lower bolster subassembly, the reducible copper material shaping of setting of drift subassembly is strained, the product warp and the problem that the deciduate is not in proper order, and the concentricity precision is high, and position concentricity stability is good to can improve the yields of processing procedure production. The punching punch is changed from original free guiding to fixed guiding, the guide precision greatly improves the production time and the punch is difficult to wear and break, the service life of the die part can be effectively prolonged, and the production quality can be stably improved. The utility model discloses a practicality is strong, has stronger popularization meaning.
Drawings
FIG. 1 is a schematic cross-sectional view of a draw hole;
FIG. 2 is a schematic structural view of the high-precision mold for forming the drawing hole of the copper backlight plate of the present invention;
fig. 3 is an exploded view of the mold of fig. 2 and an enlarged view of a part of the structure thereof.
The specific implementation mode is as follows:
in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments.
As shown in fig. 2 and fig. 3, it is a high-precision mold for forming a copper backlight plate stretching hole provided by the present invention, wherein the high-precision tool is used for processing the stretching hole 10a shown in fig. 1. The high-precision die for forming the copper backlight plate stretching hole comprises an upper die base 10, a punch set 20, a lower die base 30 and a female die cavity set 40. The punch set 20 is arranged on the bottom surface of the upper die base 10, the female die cavity set 40 is arranged on the top surface of the lower die base 30, and the punch set 20 and the female die cavity 40 are arranged in a vertically opposite mode.
The punch group 20 comprises a pre-hole punch 21, a drawing punch 22, a punching punch 24 and a hole drawing punch 25, a feeding port and a discharging port are arranged on the copper backlight board drawing hole forming high-precision die, and the pre-hole punch 21, the first drawing punch 22, the second drawing punch 23, the punching punch 24 and the hole drawing punch 25 are sequentially arranged from the feeding port to the discharging port. In this embodiment, the pre-hole punch 21, the first drawing punch 22, the second drawing punch 23, and the piercing punch 24 are all provided in a cylindrical shape with a horizontal bottom surface. The difference between the four is that a rounded corner structure is provided between the side surfaces and the bottom end surfaces of the first drawing punch 22 and the second drawing punch 23, and the rounded corner of the second drawing punch 23 is smaller than that of the first drawing punch 22. And the end of the hole drawing punch 23 is arranged in a bullet shape with the outer diameter gradually reduced from top to bottom. The first drawing punch 22 and the second drawing punch 23 have the same outer diameter and are both larger than the outer diameters of the pre-hole punch 21 and the punching punch 24, the outer diameter of the punching punch 24 is larger than the outer diameter of the pre-hole punch 21, and the maximum outer diameter of the draw-out punch 23 is larger than the outer diameter of the first drawing punch 22.
The die cavity group 40 comprises a pre-hole groove 41, a first stretching groove 42, a second stretching groove 43, a punching groove 44 and a hole drawing groove 45, wherein the pre-hole groove 41, the first stretching groove 42, the second stretching groove 43, the punching groove 44 and the hole drawing groove 45 are arranged in a one-to-one correspondence manner with the pre-hole punch 21, the first stretching punch 22, the second stretching punch 23, the punching punch 24 and the hole drawing punch 25. The pre-hole groove 41, the first drawing punch 22, the second drawing punch 23 and the hole drawing groove 45 are all consistent in size and shape with the corresponding punch external dimensions. The punching groove 44 includes an outer groove 441 and an inner groove 442 provided on a bottom surface of the outer groove 441, the outer groove 441 corresponds to the drawing groove 42 in terms of dimension, and the inner groove 442 corresponds to the outer dimension of the punching punch 24. The inner groove 442 has a smaller diameter than the outer groove 441, but the inner groove 442 has a larger diameter than the pre-hole groove 41. The depth of the punching groove 44 is the same as that of the pre-hole groove 41, the depth of the hole drawing groove 42 is larger than that of the punching groove 44, and the inner diameter of the hole drawing groove is larger than that of the hole drawing groove 42.
In addition, the high-precision die for forming the stretched hole of the copper backlight plate is further provided with a material pushing device (not shown), the backlight plate is pushed into the die from a material inlet by the material pushing device, the backlight plate is punched by the pre-hole punch 21, a pre-hole is formed in the backlight plate, the backlight plate is pushed to the position right below the stretching punch 22 by the material pushing device, the pre-hole is arranged in the middle and corresponds to the stretching groove 42, and the stretching punch 22 is sunken downwards on the backlight plate by taking the pre-hole as the center to form a stretching groove. The punching punch 24 punches a hole by taking the pre-hole as the center in the stretching groove, the outer side of the bottom surface of the stretching groove is expanded to form a side edge, the hole drawing punch 25 moves downwards to expand the punched hole to the required size, meanwhile, the pointed structure is arranged, so that a good alignment function can be achieved, the punched hole can be gradually expanded, and the problem that the side wall is too thin and breaks due to one-time expansion of the punched hole can be avoided.
In addition, a black nickel layer is disposed on the outer surface of each punch of the punch set 20, and the black nickel layer can reduce friction of the backlight shell made of copper alloy material in the forming process, reduce strain on the outer side of the product, and simultaneously can make the outer surface of the backlight shell shiny, and has less black nickel layer dropping and copper leakage. The upper die is also internally provided with a lubricating groove, the bottom end of the upper die is provided with a stripper plate, and the lubricating groove is connected to the stripper plate through an oil pipe, so that the die keeps lubricating during production operation and the temperature of the die plate is reduced; the yield of the process can be improved; after the temperature in the mold is reduced, the product is less damaged and deformed, the service life of the mold part can be effectively prolonged, and the product quality can be improved.
To sum up, the utility model discloses a set up cope match-plate pattern subassembly, drift subassembly and lower bolster subassembly, the reducible copper material shaping of setting of drift subassembly is strained, the product warp and the problem that the deciduate is not in proper order, and the concentricity precision is high, and position concentricity stability is good to can improve the yields of processing procedure production. The punching punch is changed from original free guiding to fixed guiding, the guide precision greatly improves the production time and the punch is difficult to wear and break, the service life of the die part can be effectively prolonged, and the production quality can be stably improved. The utility model discloses a practicality is strong, has stronger popularization meaning.
The above-mentioned embodiments only represent one embodiment of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (8)
1. The utility model provides a tensile hole shaping high accuracy mould of copper board in a poor light which characterized in that: comprises an upper die holder, a punch group, a lower die holder and a female die cavity group; the punch is assembled on the bottom surface of the upper die base, the female die cavity group is arranged on the top surface of the lower die base, and the punch group and the female die cavity are arranged in an up-down opposite mode; the punch group comprises a pre-hole punch, a first stretching punch, a second stretching punch, a punching punch and a hole drawing punch, a feeding port and a discharging port are arranged on the copper backlight plate stretching hole forming high-precision die, and the pre-hole punch, the first stretching punch, the second stretching punch, the punching punch and the hole drawing punch are sequentially arranged from the feeding port to the discharging port; the pre-hole punch, the first stretching punch, the second stretching punch and the punching punch are all arranged in a cylindrical shape with a horizontal bottom surface, a round corner guiding structure is arranged between the side surfaces and the bottom end surface of the first stretching punch and the second stretching punch, and the round corner of the first stretching punch is larger than that of the second stretching punch; the female die cavity group comprises a pre-hole groove, a stretching groove, a punching groove and a hole drawing groove, wherein the pre-hole groove, the stretching groove, the punching groove and the hole drawing groove are arranged in a one-to-one correspondence with the pre-hole punch, the stretching punch, the punching punch and the hole drawing punch.
2. The high-precision die for forming the drawing hole of the copper backlight plate as claimed in claim 1, wherein: the outer diameters of the first stretching punch and the second stretching punch are equal to each other, and the outer diameter of the first stretching punch is larger than the outer diameters of the pre-hole punch and the punching punch.
3. The high-precision die for forming the drawing hole of the copper backlight plate as claimed in claim 2, wherein: the outer diameter of the punching punch is larger than that of the pre-hole punch, and the maximum outer diameter of the hole drawing punch is larger than that of the stretching punch.
4. The high-precision die for forming the drawing hole of the copper backlight plate as claimed in claim 1, wherein: the shapes and the specifications of the pre-hole groove, the first stretching groove, the second stretching groove and the hole drawing groove are consistent with the external dimensions of the corresponding punches, and the groove depths of the first stretching groove and the second stretching groove are consistent.
5. The high-precision die for forming the drawing hole of the copper backlight plate as claimed in claim 4, wherein: the depth of the punching groove is consistent with that of the pre-hole groove, the depth of the hole drawing groove is larger than that of the punching groove, and the inner diameter of the hole drawing groove is larger than that of the stretching groove.
6. The high-precision die for forming the drawing hole of the copper backlight plate as claimed in claim 1, wherein: the punching groove comprises an outer groove and an inner groove arranged on the bottom surface of the outer groove, the outer groove is consistent with the drawing groove in size and specification, and the inner groove is consistent with the outer size of the punching punch.
7. The high-precision die for forming the drawing hole of the copper backlight plate as claimed in claim 1, wherein: and a black nickel layer is arranged on the outer surface of each punch of the punch group.
8. The high-precision die for forming the drawing hole of the copper backlight plate as claimed in claim 1, wherein: the upper die is internally provided with a lubricating groove, the bottom end of the upper die is provided with a stripper plate, the lubricating groove is connected to the stripper plate through an oil pipe, and the punch group penetrates through the stripper plate from top to bottom and can extend out of the stripper plate from bottom to top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921138948.8U CN210816961U (en) | 2019-07-19 | 2019-07-19 | High-precision die for forming copper backlight plate stretching hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921138948.8U CN210816961U (en) | 2019-07-19 | 2019-07-19 | High-precision die for forming copper backlight plate stretching hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210816961U true CN210816961U (en) | 2020-06-23 |
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ID=71272104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921138948.8U Active CN210816961U (en) | 2019-07-19 | 2019-07-19 | High-precision die for forming copper backlight plate stretching hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210816961U (en) |
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2019
- 2019-07-19 CN CN201921138948.8U patent/CN210816961U/en active Active
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Address after: Room 101, building 3, No. 31, jiangchengdong Road, Gaopu Town, Dongguan City, Guangdong Province Patentee after: Dongguan Juwei Electronic Technology Co.,Ltd. Address before: 523270 building C and D, fuybao Industrial Zone, shangjiangcheng, Gaopu Town, Dongguan City, Guangdong Province Patentee before: Dongguan Juwei Electronic Technology Co.,Ltd. |