CN215786486U - Die structure of die with reversed strong beam - Google Patents
Die structure of die with reversed strong beam Download PDFInfo
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- CN215786486U CN215786486U CN202122369474.1U CN202122369474U CN215786486U CN 215786486 U CN215786486 U CN 215786486U CN 202122369474 U CN202122369474 U CN 202122369474U CN 215786486 U CN215786486 U CN 215786486U
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Abstract
The utility model belongs to the technical field of cold heading dies, and particularly relates to a die-punching and beam-reflecting die structure. This mould includes master mould and die, the die is located the left side of master mould, the master mould includes the main mould shell, the die sleeve that opens and shuts, lower mould and the master mould logical stick in the master mould, the lower mould is located inside the main mould shell in the die sleeve and the master mould that opens and shuts, lower mould left side butt in the die sleeve right side and the master mould that opens and shuts, lower mould left end outside cover is equipped with the spring in the master mould, the master mould leads to the inside of stick position lower mould in main mould shell and the master mould and makes a round trip to slide, the die is including dashing the mould shell, the die dashes needle and die cushion block, the die dashes the needle and inserts and establish inside dashing the mould shell, the diameter that the die dashes the needle left end is greater than the diameter that the die dashes the needle right-hand member, the die cushion block is located the first standing groove that die shell left side was seted up, die cushion right side and die dashes needle left side fixed connection, die shell right-hand member is the U-shaped groove of opening towards the main mould shell. The die solves the problem that products with large diameter difference at two ends are limited by a constraint formula in the cold heading process and cannot be formed at one time.
Description
Technical Field
The utility model belongs to the technical field of cold heading dies, and particularly relates to a die-punching and beam-reflecting die structure.
Background
Many fasteners in the existing hardware products are formed by adopting a cold heading die. Cold heading is a type of cold forming, and is a processing method of punching, shearing, bending, drawing, and the like, a material without heating. The cold heading die is used for forging and forming upset (usually local upset) of a metal bar at normal temperature, is usually used for manufacturing heads of screws, bolts, rivets and the like, and can reduce or replace cutting processing.
The cold heading die is a precise tool, has a complex shape, bears the expansion force of a blank, has higher requirements on structural strength, rigidity, surface hardness, surface roughness and processing precision, has a specific contour or inner cavity shape, can separate the blank according to the contour shape by applying the contour shape with a cutting edge, and can obtain a corresponding three-dimensional shape by applying the inner cavity shape.
The diameters of the left end and the right end of a plurality of hardware products are different, the diameter of one end is large, the diameter of the other end is small, the diameters of the two ends of the products are restricted by a restriction formula, and the formula is (D)2-d2)/D230%, D indicates the numerical value of the great diameter of product, and D indicates the numerical value of the minor diameter of product, and there is the great structure of two diameter differences in the five metals product promptly, and the product of this kind of structure often can not one shot forming at the cold-heading in-process, and tolerance is great behind the two cold-heading, need carry out turning secondary operation, and the cold-heading is inefficient, wastes time and energy.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a die structure for a die with reversed beam, which is time-saving and labor-saving and solves the problems that a product with two large diameter differences is limited by a constraint formula in a cold heading process, cannot be formed at one time and needs to be turned for secondary processing after the cold heading.
The above object of the present invention is achieved by the following technical solutions:
the stamping die reversed strong beam die structure comprises a main die and a stamping die, wherein the stamping die is positioned on the left side of the main die;
the main die comprises a main die shell, an opening and closing die sleeve, a main die inner lower die and a main die through rod, wherein a first through hole penetrating through the left side of the main die shell and the right side of the main die shell is formed in the main die shell, the opening and closing die sleeve and the main die inner lower die are positioned in the first through hole and in interference fit with the inner side wall of the main die shell, the right side of the opening and closing die sleeve is abutted against the left side of the main die inner lower die, a spring is sleeved on the outer side of the left end of the main die inner lower die, and the main die through rod is positioned in the main die shell and the main die inner lower die and slides back and forth;
the stamping die comprises a stamping die shell, a stamping die stamping needle and a stamping die cushion block, wherein a fourth through hole penetrating through the left side of the stamping die shell and the right side of the stamping die shell is formed in the stamping die shell, the stamping die stamping needle is inserted into the fourth through hole, the diameter of the left end of the stamping die stamping needle is larger than that of the right end of the stamping die stamping needle, a first placing groove is formed in the left side of the stamping die shell, the stamping die cushion block is arranged in the first placing groove, the right side of the stamping die cushion block is fixedly connected with the left side of the stamping die stamping needle, and the right end of the stamping die shell is provided with a U-shaped groove with an opening facing the main die shell.
The preferred scheme is as follows:
preferably: the diameter of the opening on the left side of the main formwork is smaller than that of the first through hole to form a step shape, the diameter of the left end of the opening and closing die sleeve is smaller than that of the right end of the opening and closing die sleeve to form the step shape, and the steps of the opening and closing die sleeve are matched with the steps of the main formwork.
Preferably: the longitudinal section of the punching needle of the punching die is in a funnel shape which is transversely arranged.
Preferably: the main mold through rod penetrates through the right end of the lower mold in the main mold, and a main mold through rod sleeve is sleeved on the right end of the lower mold in the main mold.
Preferably: the die sleeve is provided with a through hole which penetrates through the left side of the die sleeve and the second perforation on the right side of the die sleeve, a first insert and a second insert are arranged inside the second perforation, the shape of the first insert and the shape of the second insert are matched with the shape of the second perforation, the right side of the first insert is abutted against the left side of the second insert, the outer side of the first insert and the outer side of the second insert are in interference fit with the inner side wall of the die sleeve, a first molding cavity is arranged inside the first insert, a second molding cavity is arranged inside the second insert, the position of the first molding cavity is corresponding to that of the second molding cavity, and the shape of the first molding cavity is matched with that of a product.
Preferably: the lower mould is the T shape of transversely placing in the master mould, the diameter of lower mould left end is less than in the master mould the diameter of lower mould right-hand member in the master mould, the right-hand member outside of lower mould in the master mould with the inside wall interference fit of main mould shell, the lower mould has been seted up in the master mould and has run through in the master mould lower mould left side with the third on lower mould right side perforates in the master mould, the master mould leads to the stick to insert and establish the fenestrate inside of third and with the inside wall interference fit of lower mould in the master mould, the fenestrate position of third with the position of second die cavity is corresponding, the master mould leads to the stick and is in the second die cavity with the fenestrate inside horizontal slip of third.
Preferably: and a plurality of threaded holes which vertically penetrate through the outer side wall of the inner lower die and the outer side wall of the third punch hole are formed in the outer side of the right end of the inner lower die of the main die in the annular direction, and headless bolts are arranged inside the threaded holes.
Preferably: the stamping die comprises a stamping die shell and is characterized in that a second placing groove is formed in the right side of the stamping die shell, a third insert is arranged in the second placing groove, a third molding cavity is arranged in the third insert, the shape of the third molding cavity is matched with that of a product, the diameter of the left end of the third molding cavity is smaller than that of the right end of the third molding cavity, the inner diameter of the left end of the third molding cavity is equal to that of a fourth perforation, the right end of the third molding cavity is a U-shaped groove with an opening facing the first molding cavity, and the position of the U-shaped groove corresponds to that of the first molding cavity.
Preferably: the stamping die is characterized in that a stamping die rear cushion is arranged on the left side of the stamping die, the right side of the stamping die rear cushion is abutted to the left side of the stamping die, a fifth through hole penetrating through the left side of the stamping die rear cushion and the right side of the stamping die rear cushion is formed in the stamping die rear cushion, the diameter of the fifth through hole is smaller than that of the fourth through hole, and a push-pull rod is inserted into the fifth through hole.
In conclusion, the utility model has the following beneficial effects:
1. the step of the die sleeve that opens and shuts matches with the step of main mould shell, is favorable to the product cold-heading in-process, and when the die sleeve that opens and shuts makes a round trip to slide in the second perforation of main mould shell, the die sleeve that opens and shuts can not follow the second perforation of main mould shell and roll off, improves the stability between die sleeve and the main mould shell that opens and shuts.
2. The right end of the third forming cavity is a U-shaped groove with an opening facing the first forming cavity, so that the forming of the joint of the small end and the large end of the product is facilitated, and the product can be conveniently demoulded after being subjected to cold heading.
3. The longitudinal section of the punch die punch pin is in a horizontally placed funnel shape, the contact area of the joint of the punch die punch pin and the punch die rear pad can be increased, the connection firmness and the stability of the punch die punch pin and the punch die rear pad are enhanced, the centralized transmission of the thrust transmitted by the punch die cushion block by the punch die punch pin to a product needing cold heading processing is facilitated, the pressure of the punch die cushion block to the punch die punch pin is reduced, and the service life of the punch die punch pin is prolonged.
Drawings
Fig. 1 is a schematic structural diagram in the embodiment.
In the figure, 1, a main mold shell; 2. opening and closing the die sleeve; 3. a lower die in the main die; 4. connecting a main mold with a rod; 5. a master die through rod sleeve; 6. a first insert; 7. a second insert; 8. a spring; 9. punching a mould shell; 10. punching a cushion block; 11. punching a die and a needle; 12. a third insert; 13. punching a rear cushion; 14. a headless bolt; 15. a U-shaped groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In which like parts are designated by like reference numerals. It should be noted that the words "left", "right", "lower", "inner" and "outer" used in the following description refer to directions in the drawings, but are not limited thereto.
As shown in fig. 1, the die-to-die intense beam die structure includes a main die and a die, and the die is located on the left side of the main die.
The master mould includes main mould shell 1, the die sleeve 2 that opens and shuts, lower mould 3 and the master mould lead to stick 4 in the master mould, main mould shell 1 has been seted up and has been run through the first perforation on main mould shell 1 left side and main mould shell 1 right side, the left opening diameter of main mould shell 1 is less than first fenestrate diameter and forms the step form, lower mould 3 is located first fenestrate inside and with the inside wall interference fit of master mould shell 1 in the die sleeve 2 that opens and shuts and the master mould, the left side looks butt of lower mould 3 in the right side of die sleeve 2 and the master mould that opens and shuts, the inside of lower mould 3 slides back and forth in the master mould that the master mould leads to stick 4 is located the master mould.
The diameter of the left end of the opening and closing die sleeve 2 is smaller than the diameter of the right end of the opening and closing die sleeve 2 to form a step shape, the step of the opening and closing die sleeve 2 is matched with the step of the main die shell 1, when the opening and closing die sleeve 2 slides in a first perforation, the opening and closing die sleeve 2 is always positioned in the first perforation to prevent the opening and closing die sleeve 2 from being separated from the main die shell 1 when the first perforation slides, the opening and closing die sleeve 2 is provided with a second perforation which penetrates through the left side of the opening and closing die sleeve 2 and the right side of the opening and closing die sleeve 2, a first insert 6 and a second insert 7 are arranged inside the second perforation, the shape of the first insert 6 and the shape of the second insert 7 are matched with the shape of the second perforation, the outer side of the first insert 6 and the outer side of the second insert 7 are in interference fit with the inner side wall of the opening and closing die sleeve 2, a first molding cavity is arranged inside the first insert 6, a second molding cavity is arranged inside the second insert 7, the right side of the first insert 6 is abutted against the left side of the second insert 7, the position of the first forming cavity corresponds to the position of the second forming cavity, and the shape of the first forming cavity and the shape of the second forming cavity are matched with the shape of a product, so that on one hand, sufficient accommodating space can be provided for cold heading treatment of the product, on the other hand, a long path is provided for the main mold through rod 4, and the main mold through rod 4 can extrude the product tightly.
The main die inner and lower dies 3 are in a T shape which is transversely placed, the diameter of the left end of the main die inner and lower dies 3 is smaller than that of the right end of the main die inner and lower dies 3, the outer side of the left end of the main die inner and lower dies 3 is sleeved with a spring 8, the outer side of the right end of the main die inner and lower dies 3 is in interference fit with the inner side wall of the main die shell 1, the main die inner and lower dies 3 are provided with a third through hole which penetrates through the left side of the main die inner and lower dies 3 and the right side of the main die inner and lower dies 3, a main die through rod 4 is inserted in the third through hole and is in interference fit with the inner side wall of the main die inner and lower dies 3, the main die through rod 4 penetrates through the right end of the main die inner and lower dies 3 and is sleeved with a main die through rod sleeve 5, the position of the third through hole corresponds to the position of the second die cavity, the main die through rod 4 slides left and right in the second die cavity and the third through hole, the outer side of the main die inner and lower dies 3 is provided with a plurality of threaded holes which vertically penetrate through the outer side of the main die inner and lower dies 3 along the annular direction, inside the threaded hole is provided a headless bolt 14.
The stamping die comprises a stamping die shell 9, a stamping die stamping needle 11 and a stamping die cushion block 10, wherein the stamping die shell 9 is provided with a fourth through hole penetrating through the left side of the stamping die shell 9 and the right side of the stamping die shell 9, the stamping die stamping needle 11 is inserted into the fourth through hole, the diameter of the left end of the stamping die stamping needle 11 is larger than that of the right end of the stamping die stamping needle 11, the longitudinal section of the stamping die stamping needle 11 is in a horizontally placed funnel shape, the left side of the stamping die shell 9 is provided with a first placing groove, the stamping die cushion block 10 is arranged in the first placing groove, the right side of the stamping die cushion block 10 is fixedly connected with the left side of the stamping die stamping needle 11, the longitudinal section of the stamping die stamping needle 11 is in a horizontally placed funnel shape, the contact area of the joint of the stamping die stamping needle 11 and the stamping die cushion block 10 is increased, the firmness and the firmness of the joint of the stamping die stamping needle 11 and the stamping die cushion block 10 are enhanced, the stress and the firmness of the stamping die 11 are enhanced, the right side of the stamping die shell 9 is provided with a second placing groove, a third insert 12 is arranged in the second placing groove, a third molding cavity is arranged in the third insert 12, the shape of the third molding cavity is matched with the shape of a product, the diameter of the left end of the third molding cavity is smaller than that of the right end of the third molding cavity, the inner diameter of the left end of the third molding cavity is equal to that of the fourth through hole, a die punch pin 11 can conveniently enter the third molding cavity from the fourth through hole to extrude the product, meanwhile, the thrust of the die punch pin 11 is not lost, the right end of the third molding cavity is a U-shaped groove 15 with an opening facing the first molding cavity, the position of the U-shaped groove 15 corresponds to that of the first molding cavity, the U-shaped groove 15 can conveniently enable a product to be subjected to cold heading forming to enter the U-shaped groove 15 from the first molding cavity to be subjected to cold heading forming, the U-shaped groove 15 can support the product while forming and fixing the product to be subjected to cold heading, and can conveniently move left and right, product after not influencing the cold-heading is demolded, the left side of die is provided with die back cushion 13, the right side of die back cushion 13 and the left side looks butt of die, die back cushion 13 exerts pressure for die shell 9, make die shell 9 sticis the die sleeve 2 that opens and shuts at the product cold-heading in-process, be favorable to the flat cold-heading shaping of shovel, die back cushion 13 has been seted up and has run through die back cushion 13 left side and the fifth perforation on die back cushion 13 right side, the diameter of fifth perforation is less than the diameter of fourth perforation, the inside of fifth perforation is inserted and is equipped with the push-and-pull stick, be used for exerting thrust to die cushion 10, play the effect of anti-top simultaneously.
The specific implementation process comprises the following steps:
putting a product needing cold heading into a first molding cavity and a second molding cavity, determining the size and the length of the product, pushing a main mold through rod sleeve 5, pushing the main mold through rod 4 by the main mold through rod sleeve 5, enabling the left end of the main mold through rod 4 to enter a third molding cavity, enabling the left side of the main mold through rod 4 to be in contact with the right side of the product, aligning the right end of a die shell 9 with the left end of the main mold shell 1, enabling the third molding cavity to correspond to the first molding cavity, aligning the third molding cavity with the left side of the product, enabling the right side of the die shell 9 to be in contact with the left side of an opening and closing mold sleeve 2, pushing a die rear pad 13, pushing the die shell 9 to move towards the main mold shell 1 by the die rear pad 13, pushing a push-pull rod, pushing a die pad 10 by a die pad 10, pushing a die punch pin 11 by the die pad 10, enabling the right side of the die pin 11 to be in contact with the left side of the product, continuously pushing the main mold through rod sleeve 5, pushing the main mold through rod 4, the product is formed by moving towards the third forming cavity under the pushing force of the main die through rod 4, after the product is formed, the main die through rod sleeve 5 is loosened, the lower die 3 in the main die slowly recovers to the initial position under the action of the spring 8, the main die through rod sleeve 5 is separated from the right side of the product, the push-pull rod is pushed, the die cushion block 10 drives the die punching needle 11 to push the formed product out of the third forming cavity, the die shell 9 is separated from the opening-closing die sleeve 2, and the product after cold heading is taken out. The product is firstly put into the main mould shell 1, moves towards the direction of the mould shell 9 from the main mould shell 1 and is not restricted by a formula (D)2-d2)/D2The influence of less than or equal to 30 percent is suitable for cold heading of hardware products with different diameters at two ends, and the diameter difference at the two ends of the products is not influenced by a constraint formula.
The present embodiments are illustrative, but not restrictive, and changes, modifications, additions, and substitutions may be made within the spirit and scope of the present invention, and those skilled in the art may make modifications to the embodiments as required without any inventive contribution thereto after reading the present specification, but within the scope of the claims of the present invention.
Claims (9)
1. The die structure of the die with the strong beam reaction is characterized in that: the stamping die comprises a main die and a stamping die, wherein the stamping die is positioned on the left side of the main die;
the main die comprises a main die shell (1), an opening and closing die sleeve (2), a main die inner lower die (3) and a main die through rod (4), wherein a first through hole penetrating through the left side of the main die shell (1) and the right side of the main die shell (1) is formed in the main die shell (1), the opening and closing die sleeve (2) and the main die inner lower die (3) are located inside the first through hole and are in interference fit with the inner side wall of the main die shell (1), the right side of the opening and closing die sleeve (2) is abutted against the left side of the main die inner lower die (3), a spring (8) is sleeved on the outer side of the left end of the main die inner lower die (3), and the main die through rod (4) is located inside the main die shell (1) and the main die inner lower die (3) and slides back and forth;
the stamping die comprises a stamping die shell (9), a stamping die stamping needle (11) and a stamping die cushion block (10), wherein the stamping die shell (9) is provided with a fourth through hole penetrating through the left side of the stamping die shell (9) and the right side of the stamping die shell (9), the stamping die stamping needle (11) is inserted into the fourth through hole, the diameter of the left end of the stamping die stamping needle (11) is larger than that of the right end of the stamping die stamping needle (11), a first placing groove is formed in the left side of the stamping die shell (9), the stamping die cushion block (10) is arranged in the first placing groove, the right side of the stamping die cushion block (10) is fixedly connected with the left side of the stamping die stamping needle (11), and the right end of the stamping die shell (9) is provided with an opening facing to a U-shaped groove (15) of the main die shell (1).
2. The die-back-beam die structure according to claim 1, characterized in that: the diameter of an opening on the left side of the main formwork (1) is smaller than that of the first through hole to form a step shape, the diameter of the left end of the opening and closing die sleeve (2) is smaller than that of the right end of the opening and closing die sleeve (2) to form the step shape, and the step of the opening and closing die sleeve (2) is matched with that of the main formwork (1).
3. The die-back-beam die structure according to claim 1, characterized in that: the longitudinal section of the punch die needle (11) is in a transversely placed funnel shape.
4. The die-back-beam die structure according to claim 1, characterized in that: the main mold through rod (4) penetrates through the right end sleeve of the main mold inner lower mold (3) and is provided with a main mold through rod sleeve (5).
5. The die-back-beam die structure according to claim 1, characterized in that: the die sleeve (2) is provided with a second perforation which penetrates through the left side of the die sleeve (2) and the right side of the die sleeve (2), a first insert (6) and a second insert (7) are arranged inside the second perforation, the shape of the first insert (6) and the shape of the second insert (7) are matched with the shape of the second perforation, the right side of the first insert (6) is abutted against the left side of the second insert (7), the outer side of the first insert (6) and the outer side of the second insert (7) are in interference fit with the inner side wall of the die sleeve (2), a first molding cavity is arranged inside the first insert (6), a second molding cavity is arranged inside the second insert (7), and the position of the first molding cavity corresponds to the position of the second molding cavity, the shape of the first molding cavity and the shape of the second molding cavity are matched with the shape of a product.
6. The die-back-beam die structure according to claim 5, wherein: lower mould (3) are the T shape of transversely placing in the master mould, the diameter of lower mould (3) left end is less than in the master mould the diameter of lower mould (3) right-hand member in the master mould, the right-hand member outside of lower mould (3) in the master mould with the inside wall interference fit of master mould shell (1), lower mould (3) has seted up in the master mould and has run through lower mould (3) left side in the master mould with the third on lower mould (3) right side in the master mould is perforated, master mould leads to stick (4) and inserts and establishes the fenestrate inside of third and with the inside wall interference fit of lower mould (3) in the master mould, the fenestrate position of third with the position of second die cavity is corresponding, master mould leads to stick (4) is in the second die cavity with the fenestrate inside horizontal slip of third.
7. The die-back-beam die structure according to claim 6, wherein: the outer side of the right end of the lower die (3) in the main die is provided with a plurality of threaded holes which vertically penetrate through the outer side wall of the lower die (3) in the main die to the third through hole along the annular direction, and a headless bolt (14) is arranged inside each threaded hole.
8. The die-back-beam die structure according to claim 5, wherein: the stamping die is characterized in that a second placing groove is formed in the right side of the stamping die shell (9), a third insert (12) is arranged in the second placing groove, a third molding cavity is arranged inside the third insert (12), the shape of the third molding cavity is matched with that of a product, the diameter of the left end of the third molding cavity is smaller than that of the right end of the third molding cavity, the inner diameter of the left end of the third molding cavity is equal to that of the fourth perforation, the right end of the third molding cavity is a U-shaped groove (15) with an opening facing the first molding cavity, and the position of the U-shaped groove (15) corresponds to that of the first molding cavity.
9. The die-back-beam die structure according to claim 1, characterized in that: the left side of die is provided with die back cushion (13), the right side of die back cushion (13) with the left side looks butt of die, die back cushion (13) are seted up and are run through die back cushion (13) left side with the fifth perforation on die back cushion (13) right side, the diameter of fifth perforation is less than the diameter of fourth perforation, the inside interpolation of fifth perforation is equipped with pushes away and draws the stick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122369474.1U CN215786486U (en) | 2021-09-28 | 2021-09-28 | Die structure of die with reversed strong beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122369474.1U CN215786486U (en) | 2021-09-28 | 2021-09-28 | Die structure of die with reversed strong beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215786486U true CN215786486U (en) | 2022-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122369474.1U Active CN215786486U (en) | 2021-09-28 | 2021-09-28 | Die structure of die with reversed strong beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215786486U (en) |
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2021
- 2021-09-28 CN CN202122369474.1U patent/CN215786486U/en active Active
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