CN203253795U - Scrap jumping prevention structure of splicing block notching concave mold - Google Patents

Abstract

The utility model discloses a scrap jumping prevention structure of a splicing block notching concave mold, comprising a concave mold main body. The concave mold main body is composed of a plurality of concave mold splicing blocks, the outer diameter of the concave mold splicing blocks is hooped tightly by a circular roll while the inner diameter of the concave mold splicing blocks is tensioned by inlaying a choke plug, and the concave mold splicing blocks and the choke plug are fixed together by a rotation-stopping locating pin; inner wall surfaces at two sides of single concave mold splicing block are provided with opposite inclined grooves. The scrap jumping prevention structure of splicing block notching concave mold solves the difficult problems, for example, the scrap of the notching concave mold jumps up during high-speed blanking, the cutting edge of the concave mold cracks when the scrap jumps up, the service life of the mold is reduced and the production cost is increased, thereby effectively guaranteeing realization of a high-speed punching automatic production line.

Description

The anti-tripping waste structure of piece lower die

Technical field

The utility model relates to a kind of anti-tripping waste structure of piece lower die, can be widely used in the anti-tripping waste of the lower die of all kinds of high-speed electric expreess locomotive iron core multi-station progressive dies, and all can be suitable for the piece die of other flute profile.

Background technology

The conventional lower die jump-scrap that solves high-speed electric expreess locomotive iron core multi-station progressive die is when finding jump-scrap is arranged in stamping-out, and mould is pulled down from lathe, and cutting edge of die is carried out slight abate or to the manual kerve of die inwall.The shortcoming that this processing method exists is: very time-consuming in the automated production of high speed stamping; When the jump-scrap operating personnel are uncontrollable, could find out the time at the finished product iron core often, affect production efficiency and product cost.

Summary of the invention

In order to overcome exist in the method that has the lower die jump-scrap of processing high-speed electric expreess locomotive iron core multi-station progressive die now very time-consuming in the automated production of high speed stamping, affect the shortcoming of production efficiency, the utility model provides a kind of anti-tripping waste structure of piece lower die.

The technical solution adopted in the utility model is:

The anti-tripping waste structure of piece lower die, it is characterized in that: comprise the die body, described die body is comprised of some cavity splitses, and the external diameter of described cavity splits rolls tightly circle by cover, and internal diameter tightly and by the spline alignment pin is fixed described cavity splits and plug by the plug edge; The both sides inner wall surface of the described cavity splits of monolithic is provided with the skewed slot of opposite direction.

Further, described skewed slot is wide to be 0.10～0.20mm, is 0.03～0.04mm deeply, and gradient is 3 °～5 °.

The utility model is in continuous punching press, make the stamping-out section of flute profile waste material produce small salient point, when the flute profile waste material is constantly down extruded in die, salient point on the waste material skids off skewed slot and bumps the straight wall of die, increased the frictional resistance of waste material and the straight wall of die, small salient point has increased relative frictional resistance to the straight wall of die, forces the flute profile waste material firmly to be stuck in the die, can not go up jumping.

The processing of the utility model skewed slot is adopted sine gauge or is fixed through Special precision cushion block and limited block and screw, is placed on the high-precision tool plan grinding machine to process.

The beneficial effects of the utility model are embodied in: solved the scraps-bounce of lower die in the high speed blanking and scraps-bounce and caused that cutting edge of die bursts apart, the end falls in die life, the difficult problems such as production cost raising, thus effectively guarantee to realize automatic stamping production line at a high speed.

Description of drawings

Fig. 1 is the piece constitutional diagram of the anti-tripping waste of the utility model piece lower die.

Fig. 2 is the top view of Fig. 1.

Fig. 3 is the be careful schematic diagram of cavity splits of silk thread cutting of the utility model.

Fig. 4 is the side schematic view of Fig. 3.

Fig. 5 is the schematic diagram of the concave surface piece of the bent mill processing of light.

Fig. 6 is the schematic diagram that the utility model Special precision anchor clamps are fixed on the skewed slot of processing piece on the tool master plain grinding.

Fig. 7 is the side view of Fig. 6.

Fig. 8 is piece die card waste material schematic diagram A in the utility model stamping-out process.

Fig. 9 is piece die card waste material schematic diagram A in the utility model stamping-out process.

The specific embodiment

Referring to figs. 1 through Fig. 9, the anti-tripping waste structure of piece lower die, comprise the die body, described die body is comprised of some cavity splitses 1, the external diameter of described cavity splits 1 is by cover volume 12 tight circles, and internal diameter is tight and by spline alignment pin 14 that described cavity splits 1 is fixing with plug 13 by plug 13 edges; The both sides inner wall surface of the described cavity splits 1 of monolithic is provided with the skewed slot 11 of opposite direction.

Further, described skewed slot 11 is wide to be 0.10～0.20mm, is 0.03～0.04mm deeply, and gradient is 3 °～5 °.

The utility model is in continuous punching press, make the stamping-out section of flute profile waste material 6 produce small salient point 61, when flute profile waste material 6 is constantly down extruded in die, salient point 61 on the waste material skids off skewed slot 11 and bumps the straight wall of die, increased the frictional resistance of waste material 6 with the straight wall of die, 61 pairs of straight walls of die of small salient point have increased relative frictional resistance, force the flute profile waste material firmly to be stuck in the die, can not go up jumping.

Sine gauge or fixing through Special precision cushion block 3 and limited block 5 and screw 2 is adopted in the processing of the utility model skewed slot, is placed on high-precision tool plan 4 grinding machines to process.

The described content of this specification embodiment only is enumerating the way of realization of inventive concept; protection domain of the present utility model should not be regarded as only limiting to the concrete form that embodiment states, protection domain of the present utility model also reaches the equivalent technologies means that design can be expected according to the utility model in those skilled in the art.

Claims (2)

1. the anti-tripping waste structure of piece lower die, it is characterized in that: comprise the die body, described die body is comprised of some cavity splitses, and the external diameter of described cavity splits rolls tightly circle by cover, and internal diameter tightly and by the spline alignment pin is fixed described cavity splits and plug by the plug edge; The both sides inner wall surface of the described cavity splits of monolithic is provided with the skewed slot of opposite direction.

2. the anti-tripping waste structure of piece lower die as claimed in claim 1, it is characterized in that: the wide 0.10～0.20mm of being of described skewed slot is 0.03～0.04mm deeply, and gradient is 3 °～5 °.

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