CN202097283U

CN202097283U - Stamping die capable of preventing waste rebound and overturning plug shred

Info

Publication number: CN202097283U
Application number: CN 201120119654
Authority: CN
Inventors: 张晓红; 宋贤杰
Original assignee: Shenzhen Deren Electronic Co Ltd
Current assignee: Shenzhen Deren Electronic Co Ltd
Priority date: 2011-04-21
Filing date: 2011-04-21
Publication date: 2012-01-04
Anticipated expiration: 2021-04-21

Abstract

The utility model provides a stamping die capable of preventing waste rebound and overturning plug shred. The stamping die is composed of upper and lower modules which are vertically separable and respectively installed on an upper module holder and a lower module holder. The lower module comprises a lower template with a female die, and a cutting edge of the female die is a reversed cone trapezoid with at least two slopes. The stamping die can prevent chip blockage due to rebounding and overturning of waste through different slopes in die cavity and has the advantages of being simple in process and manufacture, low in cost, and capable of being produced through a common wire cutting machine; being capable of producing high quality produces of which shapes are unlikely to be changed; being wide in application scope and long in long service lifetime; and being convenient for maintenance. And, reprocessing is not required, since the slopes may be automatically compensated during use of the die.

Description

A kind of waste material rebound and upset plug of preventing considered diel to be worth doing

Technical field

The utility model relates to the diel field, relates in particular to a kind of prevent waste material rebound and the diel of upset plug bits.

Background technology

Common five metals mould is in punching production; The waste material rebound is the modal bad phenomenon of produced on-site; Cause the stamping products bad order in the operation; Have a strong impact on the quality of final finished, influence production efficiency and production safety simultaneously, severe patient causes mould to damage can't producing and influences delivery and receive the phase and incur loss through delay and cause direct or indirect loss.So-called waste material rebound promptly in the hardware stamping process, presses enclosure material to break away from the generation of product stage fully unusually to stripper plate from stripper plate, causes the waste material rebound to come off on the mould die, and waste material overturns in the die dropping process and cause waste material to be piled up.

Existing, to waste material rebound, be employed in the die medial surface, the inclination ditch more than 2 places is begun from the center to the opposite direction machined grooves, still, be easy to generate burr when adopting this groove punching press, influence shape of product; The interlock amount limitation of punch and die is little must to be guaranteed about 1mm, and is not suitable for the occasion of the not enough 0.1mm of machined material thickness.

Also there is employing to produce and attracts, promptly make die inside form negative pressure, blinking scrap is pressed to the below knock-on with waste material to prevent that scrap heap is long-pending through compressed air with vacuum.But manufacturing cost is high, and if the air-tightness of mould lower, then may not necessarily obtain sufficient sucking-off effect.

Summary of the invention

The purpose of the utility model is to provide a kind of and prevents that waste material rebound and waste material from overturn and the diel that causes the die plug to be considered to be worth doing in dropping process.

Another purpose of the utility model is to provide a kind of prevent waste material rebound and the diel of upset plug bits, can improve the production yield, reduces the mould test-run a machine time, realizes the requirement of high-efficiency and low-costization.

The purpose of the utility model realizes through following technical scheme.

A kind ofly prevent waste material rebound and the diel of upset plug bits, but it by be installed on vertical separation on the mould bases on, following module constitutes; Last module is installed on the top mold frame, and following module is installed in down on the mould bases, comprises the lower bolster that is provided with die, and said cutting edge of die is trapezoidal at least two kinds of gradient back tapers.

Preferably, the die cavity cross section of said die become at least two up-small and down-big trapezoidal.

Preferably, said module down also comprises lower bolster and die shoe.

Preferably, the said module of going up comprises upper bolster, upper padding plate, train wheel bridge, punch, stripper pad and stripper plate.

The utility model embodiment compared with prior art, beneficial effect is: the utility model reaches through different blanking gradients in die cavity and prevents that the upset of waste material rebound waste material from filling in bits, has the following advantages:

A. processing and fabricating is simple, and processing cost is low, just can with common line cutting mill processing.

B. product quality is high, can not change shape of product.

C. applied widely, long service life.

D. easy to maintenance, gradient can remedy along with the service life of mould automatically, need not to process again.

Description of drawings

Fig. 1 is the utility model diel structure chart;

Fig. 2 is the utility model die structural representation;

Fig. 3 is two kinds of gradient structural representations in the concave die cavity.

The specific embodiment

For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.

See also Fig. 1, shown in 2, the utility model diel, but it by be installed on vertical separation on the mould bases on, following

module

11,12 constitutes; Last module 11 is installed on the top mold frame, comprises upper bolster 1, upper padding plate 2, train wheel bridge 3, punch 9 and stripper pad 4, stripper plate 5; Following module 12 is installed in down on the mould bases, comprises the lower bolster 6, lower bolster 7, the die shoe 8 that are provided with die 10; Can get according to mechanics principle: the negative pressure that the absorption affinity of the absorption affinity of the weight＞punch of the frictional force+waste material between the waste material die+fluid viscosity+die compressed air produces can prevent the waste material rebound.

Die 10 is improved keys thus; The utility model die 10 cutting edges are designed to two or more exfoliation gradients; The two place's gradient differences of in die cavity, doing as shown in Figure 3; Like gradient A1 and gradient A2, A1 and A2 value can be 0 to arbitrary numerical value, make the die cavity cross section of die 10 become two or more up-small and down-big trapezoidal; Reached by die side compression through the waste material shear plane and to increase the negative pressure that frictional force each other produces greater than absorption affinity+die compressed air of the absorption affinity+fluid viscosity of punch; When being gone up, punch 9 carries out separating with waste material; Waste material is because a kind of mode that function of friction is blocked in concave die cavity or down dropped has been given full play to the effect that prevents stampings rebound and waste material upset plug bits.

Among Fig. 2,10 is that a die, A are that cutting edge of die die cavity, B are the concave die cavity original state, the blanking gradient can for zero and arbitrarily gradient, C be another gradient state of concave die cavity, the blanking gradient can be zero and gradient arbitrarily, but not with the same gradient of B.

The size of the gradient at die cavity B and die cavity C place does not limit; B, C value can be zero and any number, decide according to the operating position of reality, and the comparable C of gradient place, B place gradient is big; Also comparable C place gradient is little; The position also is not limited to a certain fixed position, any position that can be in die cavity, and purpose is that a die cavity forms two or more different gradients.

The utility model is applicable to multiple shape die cavities such as circle, triangle, square, polygon.

The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.

Claims

1. one kind prevents waste material rebound and the diel of upset plug bits, but it by be installed on vertical separation on the mould bases on, following module constitutes; Last module is installed on the top mold frame, and following module is installed in down on the mould bases, comprises the lower bolster that is provided with die, it is characterized in that, said cutting edge of die is trapezoidal at least two kinds of gradient back tapers.

2. as claimed in claim 1ly prevent waste material rebound and the diel of upset plug bits, it is characterized in that, the die cavity cross section of said die become at least two up-small and down-big trapezoidal.

3. waste material rebound and the upset plug of preventing as claimed in claim 1 considered diel to be worth doing, it is characterized in that said module down also comprises lower bolster and die shoe.

4. waste material rebound and the upset plug of preventing as claimed in claim 1 considered diel to be worth doing, it is characterized in that the said module of going up comprises upper bolster, upper padding plate, train wheel bridge, punch, stripper pad and stripper plate.