CN202387833U

CN202387833U - Stamping die

Info

Publication number: CN202387833U
Application number: CN2011203888346U
Authority: CN
Inventors: 陈红梅; 许丽丽; 高传琴; 夏卫平
Original assignee: NANJING LIMIN MACHINERY CO Ltd
Current assignee: NANJING LIMIN MACHINERY CO Ltd
Priority date: 2011-10-13
Filing date: 2011-10-13
Publication date: 2012-08-22
Anticipated expiration: 2021-10-13

Abstract

The utility model discloses a stamping die, which comprises an upper die base, a lower die base and a drift pin; the lower die base comprises a guide plate and a lower die plate, a guide hole is arranged in the guide plate, and the lower die plate is provided with a blanking hole corresponding the position of the guide hole in the guide plate; the drift pin comprises a fixing section, a guiding section and a working section, the fixing section of the drift pin is fixed in the upper die base, and the working section can penetrate through the guide hole; the diameter of the guiding section of the drift pin is larger than that of the working section; the diameter of the guide hole in the guide plate corresponds to that of the guiding section of the drift pin, and the guiding section of the drift pin can slide in the guide hole. When the stamping die is applied, the working section of the drift pin in the stamping die is not directly contacted with the wall of the guide hole in the guide plate, and the working section is driven by the guiding section of the drift pin to move so as to finish stamping operation, because the axes of the guiding section and the working section are coincident, the accuracy of stamping can be ensured, meanwhile heating and abrasion of the working section caused by repeated sliding friction are avoided, and the service life of the stamping die is prolonged.

Description

A kind of diel

Technical field

The utility model relates to part cold-punching mold design and manufacturing technology field, and particularly a kind of stamping quality is reliable and stable, dashes the stronger diel of nail rigidity.

Background technology

Traditional carrier bar diel version such as accompanying drawing are shown in Figure 1; Wherein dash nail and be processed into three sections different outside diameter sizes, be respectively canned paragraph, guide section and active section, the diameter of active section is minimum; But be most critical property size, directly determine the diameter of chain film perforation.Active section passes guide plate, with hole on the guide plate be that little gap is slidingly matched, heating easily can receive than galling in punching course, fracture easily, work brings very big extra workload to match grinding.Simultaneously, along with improving constantly of mould blanking speed, the heating phenomenon in the blanking process is more inevitable, and the wearing and tearing that can cause are bigger, even can make that dashing nail ruptures, and then destroys the carrier bar material and cause waste.

Summary of the invention

The purpose of the utility model provides a kind of diel, improves the version of dashing nail in the mould, makes that dashing nail has higher intensity in the course of the work, thereby improves the work quality of diel.

For realizing above-mentioned purpose, the technical scheme of the utility model is: a kind of diel comprises upper bolster, die shoe and dashes nail; Die shoe comprises guide plate and lower bolster, is provided with pilot hole in the guide plate, be provided with in the lower bolster with guide plate in the corresponding material-dropping hole in pilot hole position; Dash nail and be made up of canned paragraph, guide section and active section, the canned paragraph that dashes nail is fixed in the upper bolster, and active section can pass pilot hole; Dash the diameter of the guide section diameter of nail greater than active section; The diameter of pilot hole adapts with the diameter that dashes the nail guide section in the guide plate, makes the guide section that dashes nail in pilot hole, to slide.

Further, the active section upper end towards nail in the utility model embeds in the guide section, and this version can better protection be dashed the active section of following closely, and avoids heating and wearing and tearing, strengthens the bonding strength of guide section and active section simultaneously.

The beneficial effect of the utility model is: when using; The active section that dashes nail in the diel no longer with guide plate in the hole wall of pilot hole directly contact, and drive the active section motion by the guide section that dashes nail, accomplish the punching press action; Because the axis coinciding of guide section and active section; Can guarantee the accuracy of punching press, avoid simultaneously repeating active section heating and the wearing and tearing that sliding friction causes, prolong the service life of diel.

Description of drawings

Shown in Figure 1 is the structural representation of diel in the prior art;

Shown in Figure 2 is the structural representation of the utility model diel.

The specific embodiment

For the content that makes the utility model is more obviously understandable, do to further describe below in conjunction with accompanying drawing and the specific embodiment.

In conjunction with Fig. 1 and Fig. 2, traditional diel and the diel of the utility model all comprise upper bolster 1, die shoe 2 and dash nail; Upper bolster is made up of upper padding plate 11 and fixed head 12; Die shoe 2 is made up of guide plate 21 and lower bolster 22, is provided with pilot hole in the guide plate 21, be provided with in the lower bolster 22 with guide plate 21 in the corresponding material-dropping hole in pilot hole position; Dashing nail is made up of canned paragraph 13, guide section 14 and active section 15; The canned paragraph 13 that dashes nail is fixed in the fixed head 12 of upper bolster 1, and active section 15 can pass pilot hole.

As shown in Figure 1; Its active section diameter that dashes nail of traditional diel is minimum; But active section back and forth slides in the medium and small matched in clearance of the pilot hole of guide plate during owing to work; The heating situation is more serious, and permanent work is prone to cause wearing and tearing, and then influences punching precision, quality and the service life of mould itself.

And the diel of the utility model, it dashes the diameter of guide section 14 diameters of nail greater than active section 15; The diameter of pilot hole adapts with the diameter that dashes nail guide section 14 in the guide plate 21 simultaneously, makes the guide section 14 that dashes nail in pilot hole, to slide.When specifically manufacturing and designing, the utility model has prolonged the length of dashing the nail guide section, has shortened the length of active section; And enlarged the diameter of pilot hole in the guide plate; Make when diel is worked, drive active section by guide section and accomplish reciprocal punching press action, because guide section replaces the hole wall of active section and pilot hole to produce friction; The wearing and tearing of also just having avoided active section to work long hours and bring have prolonged the service life of diel.

Further, when the utility model dashes nail in design, the upper end of active section is embedded in the guide section, has promoted the bonding strength of active section and guide section, guaranteed the accuracy of punching press.

The case of practical implementation described in the utility model is merely the preferable case study on implementation of the utility model, is not the practical range that is used for limiting the utility model.Be that all contents according to the utility model claim are done ground equivalence variation and modified, all should be as the technological category of the utility model.

Claims

1. diel comprises upper bolster, die shoe and dashes nail; Die shoe comprises guide plate and lower bolster, is provided with pilot hole in the guide plate, be provided with in the lower bolster with guide plate in the corresponding material-dropping hole in pilot hole position; Dash nail and be made up of canned paragraph, guide section and active section, the canned paragraph that dashes nail is fixed in the upper bolster, and active section can pass pilot hole; It is characterized in that, dash the diameter of the guide section diameter of nail greater than active section; The diameter of pilot hole adapts with the diameter that dashes the nail guide section in the guide plate, makes the guide section that dashes nail in pilot hole, to slide.

2. diel according to claim 1 is characterized in that, the said active section upper end that dashes nail embeds in the guide section.