CN202570945U

CN202570945U - Floating-type waste cutter device for blanking die

Info

Publication number: CN202570945U
Application number: CN2012202388713U
Authority: CN
Inventors: 邵东强; 梁明
Original assignee: Yantai Thyrite Automobile Die Manufacturing Co Ltd
Current assignee: YANTAI TAILI AUTOMOTIVE MOLD MANUFACTURING CO LTD
Priority date: 2012-05-25
Filing date: 2012-05-25
Publication date: 2012-12-05
Anticipated expiration: 2022-05-25

Abstract

The utility model discloses a floating-type waste cutter device for a blanking die, which comprises an upper die holder, a lower die holder, a trimming concave die insert, a trimming convex die insert, an upper waste cutter and a lower waste cutter. The floating-type waste cutter device for the blanking die is characterized in that the lower waste cutter is fixedly arranged on the lower die holder; the position on the upper die holder, which corresponds to the lower waste cutter, is provided with a cavity; the inside of the cavity is fixedly provided with a nitrogen spring; the lower end of the nitrogen spring is fixedly connected with a floating mounting seat which can vertically slide along the cavity of the upper die holder; the lower end of the floating mounting seat is fixedly connected with the upper waste cutter; the side surface of the upper waste cutter and the side surface of the adjacent trimming concave die insert, are in clearance fit; and at least one pair of upper waste cutter and lower waste cutter is arranged. The floating-type waste cutter device for the blanking die, which is disclosed by the utility model, has the beneficial effects that the defects such as shear droop and burrs on the edge of a manufactured piece in a blanking process are completely eliminated.

Description

The floating type scrap cutter device of a kind of blanking die

Technical field

The utility model relates to cold punching die, relates in particular to the floating type scrap cutter device of a kind of blanking die.

Background technology

The mould design and manufacturing technology is the core technology of modern punching production; Fast development along with modern manufacturing industry; Relevant enterprise such as automobile industry; When electrical appliance industry pursuit production was efficient, safe and reliable, to the also raising day by day of requirement of spare and accessory parts quality, especially the quality of covering comprised that appearance requirement is also increasingly high.In automobile industry more large-scale covering is arranged, itself and general experienced over stampings, it is thin, complex-shaped to have a material, and space curved surface is many, physical dimension is big, characteristics such as surface quality requirement height.The waste material appearance and size of covering is big, and the deburring shape is complicated, can not adopt the discharging of general discharging circle, needs to adopt the waste material cutter to cut off the just convenient and safety of back discharging.Widely used fixed scrap cutter is to utilize the composition surface of deburring die plate insert as a waste material edge at present; Adorn the waste material cutter as another waste material edge in deburring punch insert outside accordingly; The waste material cutter of this structure has just simply solved the cut-out of sealing waste material; And the taking-up of the discharge of waste material and product, but remain in fault of construction.Because fixed slug breaker, edge-trimming cutter blade shape have height to rise and fall, the incision of cutting edge is asynchronous during side cut.Slug breaker place elder generation's contact material also cuts off; Cut edge behind the trimming edge; Inevitable like this around cut-off part, the deburring cross section quality of workpiece is affected, usually can make stamped workpieces corresponding to the scrap cutter position; Make the effective profile of product produce defectives such as the angle burr that collapses, have a strong impact on the surface quality of workpiece.

The utility model content

The utility model is to the existing defective of deburring stamping-out class existing structure mould scrap cutter in the above-mentioned cold-punching mold; Provide a kind of blanking die floating type scrap cutter device; This floating type scrap cutter device has in the stamping-out process earlier to float; Treat the function of cutting off waste material after the effective profile cutting edge of the periphery deburring completion again, solved existing fixed waste material cutter, make the effective profile of product produce defectives such as the angle burr that collapses easily corresponding to the scrap cutter position.

The technical scheme that the utility model solves the problems of the technologies described above is following:

The floating type scrap cutter device of a kind of blanking die; Comprise upper bolster, die shoe, deburring die plate insert, deburring punch insert, last scrap cutter and following scrap cutter; It is characterized in that: said scrap cutter down is fixed on the die shoe; Said upper bolster is installed with nitrogen spring being provided with cavity with said scrap cutter opposite position down in the said cavity, the lower end of said nitrogen spring is fixedly connected with the unsteady mount pad that can slide up and down along the cavity of said upper bolster; Said unsteady mount pad lower end is fixedly connected with the said scrap cutter of going up, and said side of going up scrap cutter cooperates with the side clearance of said adjacent deburring die plate insert.

Said upper and lower scrap cutter is provided with a pair of at least.

The beneficial effect of the utility model is: this floating type scrap cutter device is owing to adopt and will go up scrap cutter and be installed on the mount pad that floats; When deburring cutting knife cutting edge has just begun to contact; Cushioning effect through nitrogen spring makes the scrap cutter cutting edge consistent with adjacent deburring cutoff edge open height; After accomplishing product deburring stamping-out, last scrap cutter floats with nitrogen spring, touches down behind the scrap cutter cut-out of completion waste material and moves.Owing to be again waste material to be cut off after waiting the deburring cutting knife to cut off waste material, so just eliminated product in the stamping-out process fully, the defectives such as angle and burr of collapsing in that waste material cutter correspondence position is produced have guaranteed product quality.Deburring cutting knife described here is upper and lower concavo-convex mould and inserts.

Description of drawings

Fig. 1 is the floating type scrap cutter apparatus structure of the blanking die of a utility model sketch map;

Fig. 2 is the side view of Fig. 1;

Fig. 3 is the A-A cutaway view of Fig. 2.

At Fig. 1 in Fig. 3,1, the mount pad that floats, 2, nitrogen spring, 3, go up scrap cutter, 4, scrap cutter down, 5, the deburring punch insert, 6, holding pad, 7, go up the molding compound spring, 8, the deburring die plate insert, 9, upper bolster, 10, die shoe.

The specific embodiment

Below in conjunction with accompanying drawing the principle and the characteristic of the utility model are described, institute gives an actual example and only is used to explain the utility model, is not the scope that is used to limit the utility model.

Arrive shown in Figure 3 like Fig. 1; The floating type scrap cutter device of a kind of blanking die; Comprise upper bolster 9, die shoe 10, deburring die plate insert 8, deburring punch insert 5, last scrap cutter 3 and following scrap cutter 4; It is characterized in that: said scrap cutter 4 down is fixed on the said die shoe 10; Said upper bolster 9 is installed with nitrogen spring 2 being provided with cavity with said scrap cutter 4 opposite positions down in the said cavity, the lower end of said nitrogen spring 2 is fixedly connected with the unsteady mount pad 1 that can slide up and down along the cavity of said upper bolster; Said unsteady mount pad 1 lower end is fixedly connected with the said scrap cutter 3 of going up, and said side of going up scrap cutter 3 cooperates with the side clearance of said adjacent deburring die plate insert 8.Said matched in clearance is meant that the said scrap cutter 3 of going up is close to the deburring die plate insert that is adjacent, and can slide up and down along the side of deburring die plate insert.

Said upper and lower scrap cutter is provided with a pair of at least.

The top of said punch insert 5 also is provided with holding pad 6 and last molding compound spring 7.

The floating type scrap cutter device of the utility model blanking die course of work is following: when punching press begins; Nitrogen spring 2, unsteady mount pad 1 and last scrap cutter 3 are descending with upper bolster 9; The deburring die contacts with the punch insert cutting edge; Scrap cutter 3 receives product reaction force acts compressed nitrogen spring 2 on this moment, calculates through blanking pressure for nitrogen spring 2 and checks, and makes the elastic force of nitrogen spring 2 cut off power greater than the scrap cutter position.Along with the continuation of upper bolster is descending; Deburring die and punch insert cutting edge are accomplished the stamping-out deburring simultaneously with the workpiece periphery, and meanwhile under the promotion of nitrogen spring 2, this floats and goes up scrap cutter 3 continuation with upper bolster 9 descending about 5 ㎜; That is to say after accomplishing the stamping-out deburring; Begin to contact down scrap cutter 4, the contact of upper and lower scrap cutter cutting edge is also accomplished waste material and is cut off, and goes up scrap cutter then and begins upwards with nitrogen spring 2 to float.Accomplished when so both having guaranteed the action of deburring die and punch insert cutting edge, accomplished the cut-out of waste material again.Eliminated fixed upward waste material cutter and peripheral cutting edge and caused the collapse defectives such as angle and burr of deburring process in the thickness of workpiece direction because of there being difference in height.

Fig. 2 is the side view of Fig. 1, and its expression position is that the deburring die contacts the state diagram of back to bottom dead centre with the punch insert cutting edge.

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

Claims

1. floating type scrap cutter device of blanking die; Comprise upper bolster, die shoe, deburring die plate insert, deburring punch insert, last scrap cutter and following scrap cutter; It is characterized in that: said down scrap cutter is fixedly on the die shoe; Said upper bolster is installed with nitrogen spring being provided with cavity with said scrap cutter opposite position down in the said cavity, the lower end of said nitrogen spring is fixedly connected with the unsteady mount pad that can slide up and down along the cavity of said upper bolster; Said unsteady mount pad lower end is fixedly connected with the said scrap cutter of going up, and said side of going up scrap cutter cooperates with the side clearance of said adjacent deburring die plate insert.

2. the floating type scrap cutter device of blanking die according to claim 1 is characterized in that said upper and lower scrap cutter is provided with a pair of at least.