CN111558648B - Close range punching die with smooth punching surface - Google Patents
Close range punching die with smooth punching surface Download PDFInfo
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- CN111558648B CN111558648B CN202010510806.0A CN202010510806A CN111558648B CN 111558648 B CN111558648 B CN 111558648B CN 202010510806 A CN202010510806 A CN 202010510806A CN 111558648 B CN111558648 B CN 111558648B
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- insert
- subunit
- punch
- punching
- blanking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/14—Dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/34—Perforating tools; Die holders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
- B21D45/10—Combined ejecting and stripping-off devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Punching Or Piercing (AREA)
Abstract
The invention provides a short-distance punching die with a smooth punching section, which comprises an upper die mechanism and a lower die mechanism, wherein the upper die mechanism comprises an upper die plate, and the bottom of the upper die plate is provided with a first punch and a second punch which are arranged in parallel; the lower die mechanism comprises a lower die plate, a workpiece is placed on the lower die plate, an insert is arranged on the lower die plate and comprises a first insert subunit, a second insert subunit and a third insert subunit, one side of the second insert subunit is spliced with the first insert subunit to form a first blanking hole corresponding to the first punch, the splicing surface of the second insert subunit and the first insert subunit is an inclined surface, the other side of the second insert subunit is spliced with the third insert subunit to form a second blanking hole corresponding to the second punch, and the splicing surface of the second insert subunit and the third insert subunit is an inclined surface. According to the close-range punching die with the smooth punching surface, the splicing surfaces of all parts of the combined lower die insert are inclined surfaces, so that the splicing seams are prevented from influencing the smoothness of the inner surface of the punched hole.
Description
Technical Field
The invention relates to a punching die, in particular to a close-range punching die with a smooth punching surface.
Background
In the hardware stamping die technology, two holes which are very close to each other in a product can only be punched by using different dies through two stamping processes generally, and the production cost is increased due to the increase of the die development cost and the processes. If a die is adopted to punch two holes simultaneously in one process, the distance between the holes is too close, and the thickness of the lower die knife edge insert is thinner, so that the strength of the insert is not enough, and the insert is easy to break in the production process.
According to the existing mold capable of punching in a close range, a lower mold knife edge insert is formed by splicing three parts, a splicing seam perpendicular to the punching edge is formed when any two parts are spliced, and burrs are easily formed on the blanking surface of a workpiece punched by the splicing seam during punching.
Disclosure of Invention
In view of the above, the invention provides a close-range punching die with a smooth punching surface, which avoids burrs on the punching surface of a punched hole caused by a splicing seam of a lower die knife edge insert.
Therefore, the invention provides a close-range punching die with a smooth punching surface, which comprises:
the upper die mechanism comprises an upper die plate, and a first punch and a second punch which are arranged in parallel are arranged at the bottom of the upper die plate;
the lower die mechanism comprises a lower die plate, a workpiece is placed on the lower die plate, an insert is arranged on the lower die plate and comprises a first insert subunit, a second insert subunit and a third insert subunit, one side of the second insert subunit is spliced with the first insert subunit to form a first blanking hole corresponding to the first punch, the splicing surface of the second insert subunit and the first insert subunit is an inclined surface, the other side of the second insert subunit is spliced with the third insert subunit to form a second blanking hole corresponding to the second punch, and the splicing surface of the second insert subunit and the third insert subunit is an inclined surface.
Furthermore, the first blanking hole channel and the second blanking hole channel are symmetrically arranged.
Furthermore, the first blanking hole is sequentially provided with a first blanking portion and a second blanking portion from top to bottom, and the radial sectional area of the first blanking portion is smaller than the radial sectional area of the second blanking portion.
Furthermore, a first stripping thimble is arranged in the first punch, and the end part of the first stripping thimble extends out of the bottom end face of the first punch.
Furthermore, a second stripping thimble parallel to the first stripping thimble is arranged in the first punch, and the length of the second stripping thimble is greater than that of the first stripping thimble.
Further, the end part of the second stripping thimble is arc-shaped.
Furthermore, the upper die mechanism further comprises an upper die base, an upper clamping plate and a stripper plate, the upper die plate is fixedly arranged on the upper die base, the upper clamping plate is elastically connected to the upper die plate, and the stripper plate is fixedly arranged on the upper clamping plate.
Further, the lower die mechanism also comprises a lower die base, and the lower die plate is fixedly installed on the lower die base.
According to the close-range punching die with the smooth punching surface, when punching is carried out, the upper die mechanism descends, the first punch and the second punch through holes in a workpiece, and waste materials fall into the corresponding first hole channel and the corresponding second hole channel. After punching is completed, the upper die mechanism moves upwards, stripping thimbles are arranged in the first punch and the second punch to separate waste materials from the first punch and the second punch, and the stripping plates press workpieces on the lower die plate and cannot move upwards along with the upper die mechanism. The first subunit, the second of going into is gone into the concatenation face of subunit and third income subunit and is the inclined plane, consequently does not have the concatenation seam on the limit that punches a hole of perpendicular to when the concatenation face of slope makes the concatenation of first income subunit, second income subunit and third income subunit receive the extrusion, extruded power can be decomposed, concatenation seam non-deformable, expansion, and the blanking face that punches a hole when consequently fully avoiding the punching press appears the burr, guarantees the smoothness of the inside surface that punches a hole.
According to the close-range punching die with the smooth punching surface, the splicing surfaces of all parts of the combined lower die insert are inclined surfaces, so that the splicing seams are prevented from influencing the smoothness of the inner surface of the punched hole.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic die parting diagram of a close-range punching die with a smooth punching surface according to an embodiment of the present invention;
fig. 2 is a schematic diagram of closing a short-distance punching die with a smooth punching surface according to an embodiment of the present invention;
fig. 3 is a schematic structural view of an insert in a close-range punching die with a smooth punching surface according to an embodiment of the present invention;
FIG. 4 is a structural exploded view of an insert of a close-range hole-punching die with a smooth punching surface according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view of an insert in a close-up hole-punching die with a smooth punching surface according to an embodiment of the present invention;
fig. 6 is a schematic structural view of a first punch in a close-range punching die with a smooth punching surface according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The first embodiment is as follows:
referring to fig. 1 to 6, there is shown a close-range punching die with smooth punching surface according to an embodiment of the present invention, including:
the upper die mechanism 1 comprises an upper die plate 11, wherein a first punch 12 and a second punch 13 which are arranged in parallel are arranged at the bottom of the upper die plate 11;
the lower die mechanism 2 comprises a lower die plate 21, a workpiece is placed on the lower die plate 21, an insert 3 is arranged on the lower die plate 21, the insert 3 comprises a first insert subunit 31, a second insert subunit 32 and a third insert subunit 33, one side of the second insert subunit 32 is spliced with the first insert subunit 31 to form a first blanking hole 4 corresponding to the first punch 12, the splicing surface of the second insert subunit 32 and the first insert subunit 31 is an inclined surface, the other side of the second insert subunit 32 is spliced with the third insert subunit 33 to form a second blanking hole 5 corresponding to the second punch 13, and the splicing surface of the second insert subunit 32 and the third insert subunit 33 is an inclined surface.
Specifically, referring to fig. 1 to 6, the first and second blanking holes 4 and 5 are symmetrically arranged.
Specifically, referring to fig. 1 to 6, a first stripping thimble 121 is disposed inside the first punch 12, and an end of the first stripping thimble 121 extends out of a bottom end face of the first punch 12.
Specifically, referring to fig. 1 to 6, the upper die mechanism 1 further includes an upper die base 14, an upper clamping plate 15 and a stripper plate 16, the upper die plate 11 is fixedly mounted on the upper die base 14, the upper clamping plate 15 is elastically connected to the upper die plate 11, and the stripper plate 16 is fixedly mounted on the upper clamping plate 15.
Specifically, referring to fig. 1 to 6, the lower die mechanism 2 further includes a lower die base 22, and the lower die plate 21 is fixedly mounted on the lower die base 22.
According to the close-range punching die with the smooth punching surface, when punching is carried out, the upper die mechanism descends, the first punch and the second punch through holes in a workpiece, and waste materials fall into the corresponding first hole channel and the corresponding second hole channel. After punching is completed, the upper die mechanism moves upwards, stripping thimbles are arranged in the first punch and the second punch to separate waste materials from the first punch and the second punch, and the stripping plates press workpieces on the lower die plate and cannot move upwards along with the upper die mechanism. The first subunit, the second of going into is gone into the concatenation face of subunit and third income subunit and is the inclined plane, consequently does not have the concatenation seam on the limit that punches a hole of perpendicular to when the concatenation face of slope makes the concatenation of first income subunit, second income subunit and third income subunit receive the extrusion, extruded power can be decomposed, concatenation seam non-deformable, expansion, and the blanking face that punches a hole when consequently fully avoiding the punching press appears the burr, guarantees the smoothness of the inside surface that punches a hole.
According to the close-range punching die with the smooth punching surface, the splicing surfaces of all parts of the combined lower die insert are inclined surfaces, so that the splicing seams are prevented from influencing the smoothness of the inner surface of the punched hole.
Example two:
referring to fig. 1 to fig. 6, a close-range punching die with a smooth punching surface according to a second embodiment of the present invention is shown, and the present embodiment further adopts the following technical solutions as improvements on the basis of the above embodiment: the first blanking hole 4 is sequentially provided with a first blanking part 41 and a second blanking part 42 from top to bottom, and the radial sectional area of the first blanking part 41 is smaller than the radial sectional area of the second blanking part 42; a second stripping thimble 122 parallel to the first stripping thimble 121 is disposed in the first punch 12, and the length of the second stripping thimble 122 is greater than that of the first stripping thimble 121.
In order to ensure the compressive strength of the second feeding subunit, the diameter of the middle punching and edge forming part of the second feeding subunit is gradually increased from top to bottom, and an inclined second blanking part is formed in the first blanking hole, so that bending can be formed between the first blanking part and the second blanking part, and in order to avoid waste accumulation of the first blanking hole, the radial sectional area of the second blanking part is larger than the radial sectional area of the first blanking part. The second blanking hole channel is the same.
In order to further prevent stacking, two stripping thimbles are arranged in the first punch and the second punch. Taking the first punch as an example, after the first punch punches the waste materials, the two stripping thimbles push the waste materials to be blanked along the first blanking portion, and because the length of the second stripping thimbles is greater than that of the first stripping thimbles, after the waste materials enter the second blanking portion, the second stripping thimbles enable the waste materials to rotate, so that the waste materials can rapidly slide in the second blanking portion, and material piling is avoided.
Example three:
referring to fig. 1 to fig. 6, a close-range punching die with a smooth punching surface according to a third embodiment of the present invention is shown, and the present embodiment further provides the following technical solutions as improvements on the basis of the above embodiment: the end of the second stripping thimble 122 is arc-shaped.
The end part of the second stripping thimble is arc-shaped, so that the contact area of the second stripping thimble and the waste material is small, and the interference on the rotation of the waste material is avoided.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. A close range punching die with smooth punching surface is characterized by comprising:
the upper die mechanism (1) comprises an upper die plate (11), wherein a first punch (12) and a second punch (13) which are arranged in parallel are arranged at the bottom of the upper die plate (11);
the lower die mechanism (2) comprises a lower die plate (21), a workpiece is placed on the lower die plate (21), an insert (3) is arranged on the lower die plate (21), the insert (3) comprises a first insert subunit (31), a second insert subunit (32) and a third insert subunit (33), one side of the second insert subunit (32) is spliced with the first insert subunit (31) to form a first blanking hole (4) corresponding to the first punch (12), the splicing surface of the second insert subunit (32) and the first insert subunit (31) is an inclined surface, the other side of the second insert subunit (32) is spliced with the third insert subunit (33) to form a second blanking hole (5) corresponding to the second punch (13), and the splicing surface of the second insert subunit (32) and the third insert subunit (33) is an inclined surface;
a first stripping thimble (121) is arranged in the first punch (12), and the end part of the first stripping thimble (121) extends out of the bottom end face of the first punch (12);
a second stripping thimble (122) parallel to the first stripping thimble (121) is arranged in the first punch (12), and the length of the second stripping thimble (122) is greater than that of the first stripping thimble (121).
2. A close-up punch with a smooth cutting surface according to claim 1, characterised in that the first (4) and the second (5) blanking opening are arranged symmetrically.
3. The close-range punching die with smooth punching surface according to claim 2 is characterized in that the first blanking hole (4) is provided with a first blanking portion (41) and a second blanking portion (42) from top to bottom in sequence, and the radial sectional area of the first blanking portion (41) is smaller than the radial sectional area of the second blanking portion (42).
4. A close-up punch die with a smooth blanking surface according to claim 1, characterised in that the end of the second stripper thimble (122) is curved.
5. The close-range punching die with smooth blanking surface according to claim 1, characterized in that the upper die mechanism (1) further comprises an upper die holder (14), an upper clamping plate (15) and a stripper plate (16), the upper die plate (11) is fixedly installed on the upper die holder (14), the upper clamping plate (15) is elastically connected to the upper die plate (11), and the stripper plate (16) is fixedly installed on the upper clamping plate (15).
6. The close-up punching die with smooth blanking surface as claimed in claim 1, characterized in that the lower die mechanism (2) further comprises a lower die holder (22), and the lower die plate (21) is fixedly mounted on the lower die holder (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010510806.0A CN111558648B (en) | 2020-06-08 | 2020-06-08 | Close range punching die with smooth punching surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010510806.0A CN111558648B (en) | 2020-06-08 | 2020-06-08 | Close range punching die with smooth punching surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111558648A CN111558648A (en) | 2020-08-21 |
| CN111558648B true CN111558648B (en) | 2022-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010510806.0A Active CN111558648B (en) | 2020-06-08 | 2020-06-08 | Close range punching die with smooth punching surface |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08257657A (en) * | 1995-03-28 | 1996-10-08 | Daiwa Kogyo Kk | Ejector unit for press die |
| CN201752743U (en) * | 2010-01-19 | 2011-03-02 | 亿和精密金属制品(深圳)有限公司 | Stripping push-out device for stamping mould |
| CN102350461B (en) * | 2011-07-19 | 2013-07-17 | 奇瑞汽车股份有限公司 | Method for adjusting gaps after quenching of die forging inserts |
| CN203494997U (en) * | 2013-09-05 | 2014-03-26 | 亿和精密金属制品(深圳)有限公司 | Short-distance punching structure of mold |
| CN207238868U (en) * | 2017-08-29 | 2018-04-17 | 艾柯豪博（苏州）电子有限公司 | A kind of punch die structure of punching shaping of elongated needle |
| CN208261706U (en) * | 2018-03-28 | 2018-12-21 | 安特(苏州)精密机械有限公司 | Punching press automatic guide structure |
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2020
- 2020-06-08 CN CN202010510806.0A patent/CN111558648B/en active Active
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| CN111558648A (en) | 2020-08-21 |
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