CN202683756U - Upper die floating punching die structure - Google Patents

Abstract

A upper die floating punching die structure comprises an upper template, upper die floating stoppers, springs, guide pillars, spring seats, a lower template, a punching terrace die, a positioning plate and a punching concave die; and the punching terrace die is arranged on the upper template. The punching concave die is arranged on the lower template, the positioning plate is arranged on the punching concave die, the two guide pillars and the two upper die floating stoppers are symmetrically arranged between the upper template and the lower template; the spring seats are respectively arranged outside the two guide pillars and the two upper die floating stoppers, and the springs are respectively arranged on the spring seats. By adopting the upper die floating punching die structure, the phenomenon that the concave die wall of the traditional box-shaped workpiece sidewall punching die is thin, the concave die is easy to fracture when punching can be radically solved. The die structure is simple and practical, is convenient to manufacture and maintain, and is suitable for large-batch production.

Description

The punching die structure that patrix floats

Technical field

The utility model belongs to the punch process field of metal forming, relates to the punching die structure that a kind of patrix floats.

Background technology

In the punch process of metallic article, to carry out punching at box-like workpiece sidewall and often run into, traditional way is that the punching concave die with mould structure is fixed on the counterdie of mould; Piercing punch is fixed on the patrix of mould, moves up and down with press ram during work.For this mould structure, when punch process, punching concave die is in the inside of box-like workpiece, and piercing punch is in the outside of box-like workpiece.If the pitch-row that box-like workpiece sidewall need to rush from box-like workpiece bottom very close to, by traditional way, punching concave die still is placed on the inside of box-like workpiece, then the wall thickness of punching concave die can be very thin, easy fracture phenomenon is difficult to satisfy the quality requirement of workpiece.

The utility model content

The purpose of this utility model is: for the pitch-row of box-like workpiece sidewall from the workpiece bottom characteristics close to very, during work, punching concave die can not be in the situation of box-like inside workpiece, the punching die structure that provides a kind of patrix to float, during work, punching concave die is in the outside of box-like workpiece, and piercing punch is upper and lower floating in the inside of box-like workpiece, finishes the technique content of punching.

The technical solution of the utility model is: the punching die structure that patrix floats comprises: cope match-plate pattern, patrix floating position-limiting device, spring, guide pillar, spring base, lower bolster, piercing punch, location-plate, punching concave die; Piercing punch is installed on the cope match-plate pattern, and punching concave die is installed on the lower bolster, and location-plate is installed on the punching concave die, and two guide pillars and two patrix floating position-limiting device symmetries are installed between cope match-plate pattern and the lower bolster.

The outside of two guide pillars and two patrix floating position-limiting devices is separately installed with spring base, is separately installed with spring on the spring base.

The utility model can reach following beneficial effect after adopting technique scheme: the punching die structure that patrix floats has fundamentally solved the die wall thickness of traditional box-like workpiece Punching, and the die phenomenon of rupture occurs during punching easily.This mould structure is simple and practical, and manufacturing and easy to maintenance is applicable to produce in enormous quantities.

Description of drawings

Fig. 1 is the schematic diagram of the unsteady punching die structure of the utility model patrix.

Fig. 2 is the A-A cross section view of the unsteady punching die structure of the utility model patrix.

The specific embodiment

The utility model is described in further detail with reference to the accompanying drawings for the below.The punching die structure that patrix floats mainly comprises: cope match-plate pattern 1, patrix floating position-limiting device 2, spring 3, guide pillar 4, spring base 5, lower bolster 6, piercing punch 7, location-plate 8, punching concave die 9.Piercing punch 7 is installed on the cope match-plate pattern 1, forms patrix, patrix can fluctuate under the interaction of spring 3 and press ram, and the distance of floating is h.Punching concave die 9 is installed on the lower bolster 6, and location-plate 8 is installed on the punching concave die 9, and location-plate 8 is the location-plate of workpiece 10, is again the stripper of workpiece 10; Location-plate 8, punching concave die 9, lower bolster 6 form counterdie, and counterdie is fixed on the workbench of forcing press.Two guide pillars 4 and two patrix floating position-limiting device 2 symmetries are installed between cope match-plate pattern 1 and the lower bolster 6, have both played the guide effect that patrix fluctuates, and again upper die and lower die are linked together.Two springs 3 and two spring bases 5 are contained in respectively the outside of two guide pillars 4 and two patrix floating position-limiting devices 2, two power that spring 3 provides patrix upwards to float.

During work, by shown in Figure 1 workpiece 10 is placed on the punching concave die 9, determines that by location-plate 8 and punching concave die 9 workpiece 10 is in the position of counterdie.At this moment, press ram is descending, promotes patrix and moves downward, and piercing punch 7 contacts with punching concave die 9, goes out the hole of box-like workpiece 10 sidewalls, and punched scrap spills mould downwards, finishes the operation content of punching.At this moment, press ram stops and is up, patrix moves upward under the effect of two springs 3, location-plate 8 is backed off workpiece 10 from piercing punch 7, but be subjected to the restriction of patrix floating position-limiting device 2, the distance that patrix upwards floats is h(h＜H, and H is the maximum activity amount of piercing punch 7 in the box-like workpiece ), Workpiece 10 is taken out in the patrix stop motion.

In punching production, the punching die structure that utilizes this patrix to float can solve the problem of complicated box-like workpiece sidewall punching, has prolonged the service life of punching die, has improved product quality and production efficiency.

Claims (2)

1. the unsteady punching die structure of patrix comprises: cope match-plate pattern (1), patrix floating position-limiting device (2), spring (3), guide pillar (4), spring base (5), lower bolster (6), piercing punch (7), location-plate (8), punching concave die (9); It is characterized in that: piercing punch (7) is installed on the cope match-plate pattern (1); Punching concave die (9) is installed on the lower bolster (6), and location-plate (8) is installed on the punching concave die (9), and two guide pillars (4) and two patrix floating position-limiting devices (2) symmetry are installed between cope match-plate pattern (1) and the lower bolster (6).

2. the punching die structure that floats of patrix according to claim 1, it is characterized in that: the outside of two guide pillars (4) and two patrix floating position-limiting devices (2) is separately installed with spring base (5), is separately installed with spring (3) on the spring base (5).

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