CN210936942U

CN210936942U - Cold heading forming die

Info

Publication number: CN210936942U
Application number: CN201921925986.8U
Authority: CN
Inventors: 徐海平; 傅海灯; 张琪
Original assignee: Zhoushan Dinghai Haili Electric Appliance Co ltd
Current assignee: Zhoushan Dinghai Haili Electric Appliance Co ltd
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2020-07-07
Anticipated expiration: 2029-11-08

Abstract

The utility model discloses a cold heading forming die, including die body, shaping chamber, shaping core, the shaping core includes the shaping outer core and the shaping inner core that cup joint each other, the shape of shaping outer core is the round platform form of inversion, and the middle part is equipped with the cooperation cavity, be provided with the internal thread on the shaping intracavity wall, and screw-thread fit has the tighrening ring, the spraying has the elasticity wearing layer on the outer wall of shaping outer core, form the shaping cavity on between the cooperation cavity of the top surface of shaping inner core and shaping outer core, the shaping cavity under inner hole wall and the bottom surface formation of shaping chamber of shaping inner core; the outer wall of the forming inner core and the outer wall of the forming outer core are respectively provided with an inner air groove and an outer air groove which are communicated with the upper end and the lower end of the corresponding outer wall, the bottom surface of the forming outer core is provided with a vent groove communicated with the inner air groove and the outer air groove, the air adjusting column is embedded in the outer air groove and is arranged in a hollow mode, the hollow bottom of the air adjusting column is communicated with the vent groove, and the forming inner core and the forming outer core are not easy to damage due to stamping, long in service life, good in using effect and simple and convenient.

Description

Cold heading forming die

Technical Field

The utility model relates to a mould, in particular to cold-heading moulded die.

Background

In recent years, cold heading technology is developed rapidly in China, a plurality of products such as automobile parts can be finished by machining originally, the process is very simple as long as the products are formed by cold heading on a cold heading forming machine, and the key of cold heading forming is the design and application of a cold heading forming die.

For a cold heading forming die for punching a workpiece with a stepped shaft structure, the current structure is usually as follows: the die core and the die piece are arranged in the outer sleeve, the die piece is provided with an inner hole with a larger diameter, the die core is provided with an inner hole with a smaller diameter, the inner holes of the die core and the die piece jointly form a die cavity with a stepped hole structure, and the die cavity with the stepped hole structure is just used for upsetting a workpiece stepped shaft.

However, the cold heading forming die has the following disadvantages: many times because the work piece reason needs the thickness of diaphragm very thin, just leads to the diaphragm to damage easily, can be equipped with the exhaust hole simultaneously at the bottom terminal surface of diaphragm, so in cold-heading forming process, often have impurity to get into the bottom terminal surface of diaphragm and continuous exhaust pressure effect, the diaphragm is outwards bloated from the surface of mould easily, leads to damaging or droing, and the life of mould is shorter.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a punching press is not fragile, long service life, excellent in use effect and assembly and dismantle simple and convenient cold-heading moulded die.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a cold heading forming die comprises a die body, a forming cavity is arranged on the upper end surface of the die body, a forming core body which can be matched with the appointed shape of a part is arranged in the forming cavity, the molding core body comprises a molding outer core and a molding inner core which are mutually sleeved, the molding outer core is in an inverted round table shape, the middle part of the molding outer core is provided with a matching cavity for the molding inner core to slide in from bottom to top, the matching cavity is narrow at the top and wide at the bottom, the inner wall of the molding cavity above the molding outer core is provided with internal threads, and the threads are matched with a fastening ring used for limiting the molding outer core to be separated from the molding cavity, the outer wall of the molding outer core is coated with an elastic wear-resistant layer to realize the tight support and wear resistance with the molding cavity, an upper forming cavity is formed between the top surface of the forming inner core and the matching cavity of the forming outer core, and a lower forming cavity is formed between the inner hole wall of the forming inner core and the bottom surface of the forming cavity; the outer wall of the forming inner core and the outer wall of the forming outer core are respectively provided with an inner air groove and an outer air groove which penetrate through the upper end and the lower end of the corresponding outer wall, the bottom surface of the forming outer core is provided with a vent groove communicated with the inner air groove and the outer air groove, a hollow air adjusting column is embedded in the outer air groove, and the hollow bottom of the air adjusting column is communicated with the vent groove.

More preferably: the ventilation channel of the hollow setting of the air adjusting column can be set to different apertures according to the requirement, and the ventilation aperture is changed by matching with chimeras with different hollow apertures.

More preferably: the die body comprises a die cover, a rear cover, a die pad and a top rod, the top rod penetrates through the die pad, the rear cover is connected to the lower portion of the die pad, the die cover is sleeved on the upper portion of the die pad, the lower portion of the die cover is in threaded connection with the upper side wall of the rear cover, a die cover through hole is formed in the upper portion of the die cover, and a forming cavity is formed between the side wall of the die cover through hole and the top surface of the die pad.

To sum up, the utility model discloses the beneficial effect who contrasts in prior art does: in the cooperation cavity was up entered into from down in the shaping inner core, put the outer core of shaping again in the shaping cavity, through the mounting that the tighrening ring threaded connection on upper portion realized that the shaping core is firm on the die body, the outer core of shaping simultaneously and shaping inner core are through spacing butt, and the structure is firm and dismantle conveniently to in this aspect of breathing freely, set up the adjustable of column realization ventilative aperture of transferring gas, so the cold-heading shaping of different parts.

Drawings

Fig. 1 is a schematic structural diagram of the embodiment.

Reference numerals: 1. a mold body; 2. a molding cavity; 3. molding a core body; 31. molding the outer core; 32. forming an inner core; 4. a mold cover; 5. a rear cover; 6. a die pad; 7. a mating cavity; 8. a fastening ring; 9. an upper molding cavity; 10. a lower molding cavity; 11. an internal gas tank; 12. an external air tank; 13. a vent channel; 14. and (5) adjusting the gas column.

Detailed description of the preferred embodiments

The following provides a more detailed description of the present invention with reference to the accompanying drawings.

The utility model provides a cold-heading moulded die, refer to fig. 1 and show, including die body 1, become die cavity 2 at 1 upper portion terminal surface of die body, be provided with in the become die cavity 2 can with the shaping core 3 of the appointed shape looks adaptation of part, shaping core 3 is including the outer core 31 of shaping and the shaping inner core 32 that cup joint each other, die body 1 is including the lid 4 simultaneously, back lid 5, die cushion 6 and ejector pin, the ejector pin is worn to put in die cushion 6, back lid 5 is connected in the lower part of die cushion 6, the upper portion at die cushion 6 is put to 4 covers of die cover, the lower part of lid 4 is connected with the last lateral wall screw thread of back lid 5, the upper portion of lid 4 is provided with 4 through-holes of die cover, form become die cavity 2 between the lateral wall of 4 through-holes of die cover.

The shape of the outer core 31 of shaping is the round platform form of inversion, and the middle part is offered and is used for the shaping inner core 32 to follow cooperation cavity 7 up sliding in down, cooperation cavity 7 is narrow wide setting down, be provided with the internal thread on the shaping 2 inner walls of core 31 top outside the shaping, and screw-thread fit has the tighrening ring 8 that is used for restricting the outer core 31 of shaping and breaks away from shaping chamber 2, the spraying has the elasticity wearing layer to realize supporting tightly and the abrasionproof damage with shaping chamber 2 on the outer wall of the outer core 31 of shaping, form shaping 2 bodies in the shaping chamber between the cooperation cavity 7 of the outer core 31 of top surface of shaping inner core 32 and shaping, shaping 2 bodies in the shaping inner hole wall of inner core 32 and the bottom surface formation of shaping chamber 2 down.

An inner air groove 11 and an outer air groove 12 which run through the upper end and the lower end of the corresponding outer wall are respectively arranged on the outer wall of the forming inner core 32 and the outer wall of the forming outer core 31, the inner air groove 11 and the outer air groove 12 are equally distributed on the corresponding outer side wall at intervals, a vent groove 13 which is communicated with the inner air groove 11 and the outer air groove 12 is arranged on the bottom surface of the forming outer core 31, a hollow air adjusting column 14 is embedded in the outer air groove 12, and the hollow bottom of the air adjusting column 14 is communicated with the vent groove; in this embodiment, the ventilation channel of the air adjusting column 14 can be set to different apertures according to the requirement, and the ventilation aperture can be changed by matching with the chimera of different hollow apertures.

The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention, which is defined by the appended claims.

Claims

1. The utility model provides a cold-heading moulded die, includes die body (1), has seted up one-tenth die cavity (2) at die body (1) upper portion terminal surface, be provided with in one-tenth die cavity (2) can with the shaping core (3) of the appointed shape looks adaptation of part, characterized by: the molding core body (3) comprises a molding outer core (31) and a molding inner core (32) which are mutually sleeved, the shaping outer core (31) is in an inverted round table shape, the middle part of the shaping outer core is provided with a matching cavity (7) for the shaping inner core (32) to slide in from bottom to top, the matching cavity (7) is arranged in a narrow-top and wide-bottom manner, the inner wall of the molding cavity (2) above the molding outer core (31) is provided with internal threads, and the fastening ring (8) used for limiting the molding outer core (31) to be separated from the molding cavity (2) is matched with the threads, the outer wall of the forming outer core (31) is coated with an elastic wear-resistant layer to realize the tight support and wear resistance with the forming cavity (2), an upper molding cavity (2) body is formed between the top surface of the molding inner core (32) and the matching cavity (7) of the molding outer core (31), the inner hole wall of the forming inner core (32) and the bottom surface of the forming cavity (2) form a lower forming cavity (2); an inner air groove (11) and an outer air groove (12) which penetrate through the upper end and the lower end of the corresponding outer wall are respectively formed in the outer wall of the forming inner core (32) and the outer wall of the forming outer core (31), an air groove (13) which is communicated with the inner air groove (11) and the outer air groove (12) is formed in the bottom surface of the forming outer core (31), a hollow air adjusting column (14) is embedded in the outer air groove (12), and the hollow bottom of the air adjusting column (14) is communicated with the air groove.

2. A cold-heading forming die as claimed in claim 1, wherein: the ventilation channel of the hollow setting of the air adjusting column (14) can be set to different apertures according to the requirement, and the ventilation aperture can be changed by matching with chimeras with different hollow apertures.

3. A cold-heading forming die as claimed in claim 1, wherein: the die body (1) comprises a die cover (4), a rear cover (5), a die pad (6) and a top rod, wherein the top rod penetrates through the die pad (6), the rear cover (5) is connected to the lower portion of the die pad (6), the die cover (4) is sleeved on the upper portion of the die pad (6), the lower portion of the die cover (4) is in threaded connection with the upper side wall of the rear cover (5), a through hole of the die cover (4) is formed in the upper portion of the die cover (4), and a forming cavity (2) is formed between the side wall of the through hole of the die cover (4) and the top surface of the die pad (6).