CN201848473U - A die structure - Google Patents

Abstract

The utility model discloses a die structure be equipped with two bosss on two relative lateral walls of die cavity respectively. The utility model has the advantages that: the mould phenomenon of the sweeps because of the upset production has effectually been prevented, has reduced the damage of die and drift, practices thrift the cost, improves the rate of utilization of board and the yield of product.

Description

A die structure

technical field

The utility model relates to a blanking die, in particular to a concave die structure on the blanking die.

Background technique

At present, the mass production of lead frame products is generally carried out by punching copper strips on a mold. The working surface of the punching die is usually provided with a geometric cutting edge. The punch punches into the die, punches down the copper strip at the cutting edge to form waste, falls into the cavity, and forms a hole on the copper strip with the same shape as the cutting edge of the die. Usually, the vertical section of the cavity is trapezoidal, that is, the upper part is the smallest near the cutting edge of the die, and the lower part is the largest, so that the waste chips fall horizontally. However, when the shape of the cutting edge of the die is simple, the cut waste is also relatively simple, and it is easy to turn over during the falling process. The head is broken and scrapped, causing the cost to rise.

Contents of the invention

The purpose of the utility model is to provide a die structure that can prevent waste from clogging in the cavity of the die.

The technical solution of the utility model is: a die structure, two bosses are respectively arranged on the two opposite side walls of the cavity.

Four bosses are set on the side wall of the cavity of the die, and four grooves are formed on the side of the stamped waste chips. Due to the limit function of the bosses, the waste chips fall smoothly into the cavity along the bosses, without Deflection will occur, avoiding the phenomenon of waste clogging, reducing the phenomenon of die and punch being scrapped, and saving costs.

The four bosses are symmetrically arranged on the two side walls in the length direction of the cavity, which can provide a symmetrical balance moment and facilitate the falling of waste.

The utility model has the advantages of effectively preventing the clogging phenomenon caused by the turning over of the waste, reducing the damage of the die and the punch, saving the cost, and improving the weaving rate of the machine and the yield rate of the product.

Description of drawings

Accompanying drawing 1 is the top view of the utility model die structure;

Accompanying drawing 2 is the enlarged view of part A in Fig. 1;

Accompanying drawing 3 is B-B direction sectional enlarged view in Fig. 2;

1. Die, 2. Working surface, 3. Cutting edge, 4. Cavity, 5. Boss.

Detailed ways

Example:

Referring to Fig. 1, it is a top view of a blanking die for stamping, wherein the upper surface of the die 1 is a working surface 2, on which several cutting edges 3 are provided, see accompanying drawings 2 and 3, the cutting edge 3 is closed A mold cavity 4 is formed. The vertical section of the mold cavity 4 is trapezoidal. Two bosses 5 are respectively arranged on the two side walls in the length direction, and four bosses 5 are symmetrically arranged on the two side walls of the mold cavity.

When punching, the punch enters the die, and the side wall of the cavity cuts off the waste. Due to the existence of the boss, the side of the cut waste has a groove that matches the boss, and the waste can move along the The boss falls smoothly into the cavity without overturning, which effectively avoids the clogging of the die caused by the overturning and accumulation of waste, prolongs the service life of the die and punch, and improves the weaving rate of the machine , improving the yield of the product.

The above detailed description is a specific description for one of the feasible embodiments of the present utility model. This embodiment is not intended to limit the patent scope of the present utility model. Any equivalent implementation or change that does not deviate from the utility model shall include within the patent scope of this case.

Claims (2)

1. a die structure comprises die cavity, it is characterized in that: be respectively equipped with two boss on two relative sidewalls of described die cavity.

2. a kind of die structure according to claim 1 is characterized in that: four described boss are symmetricly set on two sidewalls on the described die cavity length direction.

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