CN201799510U

CN201799510U - Die for one-step molding and composite bending of sigma-shaped part

Info

Publication number: CN201799510U
Application number: CN2010205566037U
Authority: CN
Inventors: 殷荣军
Original assignee: Jiangsu World Plant Protecting Machinery Co Ltd
Current assignee: Jiangsu World Plant Protecting Machinery Co Ltd
Priority date: 2010-09-30
Filing date: 2010-09-30
Publication date: 2011-04-20
Anticipated expiration: 2020-09-30

Abstract

The utility model discloses a die for the one-step molding and the composite bending of a sigma-shaped part. The die comprises a die handle, a bending convex die, a bending convex die fixing plate, a rotating concave die, a swinging press block, a fixed concave die, a tension spring and a tension spring seat. The shape of the lower end of the bending convex die is fit with the that of the inner side of the sigma-shaped part, the bending convex die fixing plate is fixedly connected with the die handle and the bending convex die, the bottom of the fixed concave die is fixedly connected with a concave die seat, a plurality of concave die openings at one side of the rotating concave die are opposite to a plurality of concave die openings at one side of the swinging press block two by two, the lower end of the rotating concave die and the lower end of the swinging press block are respectively and movably connected with the upper side of the fixed concave die, and a side plate of the concave die is fixedly connected with the front side and the rear side of the fixed concave die respectively. The tension spring seat is fixed at two ends of the fixed concave die respectively, one end of the tension spring is articulated with the tension spring seat, and the other end of the tension spring is articulated with the other sides of the rotating concave die and the swinging press block respectively. The die is compact in structure, and a sigma-shaped torsional spring seat which has three bending deformations and is more complex in shape can be produced only by positioning and compositely bending thin steel plate blank at one step.

Description

б shape part one-shot forming complex bend mould

Technical field

The utility model relates to a kind of sheet bending mould, relates in particular to the mould that a punching press of a kind of need just can be finished sheet metal blank many places complex bend, belongs to the cold punching technology field.

Background technology

Figure 1 shows that the stereogram of hay mower part torsion spring seat 30, these torsion spring seat 30 end faces such as Russion letter " б " have three places and bend to profile, adopt the sheet metal blank to make.Its structure is: an end is rolled into semicircle 301,112 ° of 90 ° of bendings, the other end 303 bendings are carried out at middle part 302.Existing torsion spring seat successively just can be made through three bendings, and Fig. 2 is crooked work step one: sheet metal blank two ends are carried out crooked relatively simultaneously, and an end bends semicircle 301 blanks, 112 ° of the other end 303 bendings; Fig. 3 is crooked work step two: 90 ° of middle part 302 bendings; Fig. 4 is the upset work step: 303 1 ends that will finish 112 ° of bendings are as the benchmark base, and the other end that curves semicircle 301 blanks is put into mould vertically upward; Fig. 5 is crooked work step three: finish the shaping of semicircle 301 at last.This bending forming technology needs three punch presses with three secondary mould continuous productive processes, carries out three bendings continuously, and bending all need position at every turn, inefficiency, the equipment that takies is many, positioning accuracy is poor, time-consuming.

Application number is that 03217942.1 Chinese utility model patent discloses a kind of " U " shape part bending mould, and this mould is the bending mould of full-sized car sheet metal component, and the sheet material two ends are curved swallow-tail form earlier, and resilience becomes U again " the shape part.This bending mould mainly is made up of die socket, swinging cavity die, holding pad, air cushion, pressure pin and crooked punch, and wherein, swinging cavity die is made up of two blocks of dies, and the elasticity ejector pin by its underpart is connected on the die socket respectively, on two blocks of dies rotating shaft is installed respectively; In crooked punch bottom the elasticity sprue puller pin is set.Advantage such as that this utility model has is simple in structure, easy to operate, efficient is high, quality is good, but, the rotating shaft that the swinging cavity die structure of this utility model is more loaded down with trivial details, be provided with on two blocks of dies is subjected to the shearing force effect that the sheet deformation drag is produced, and is cut off inefficacy easily; Elasticity ejector pin in the die socket is in case damage, and could take out after must removing swinging cavity die, keeps in repair very inconvenient.Should " U " shape part be by obtaining behind the swallow-tail form bool resilience, have the advantages that upper opening is little, the bottom is big; U " the shape part is during from the vertical demoulding of crooked punch, the knockout press that the elasticity sprue puller pin of crooked punch bottom produces must be greater than the U after the resilience " the shape part is to the clamping force of crooked punch; just can finish U " the vertical demoulding of shape part, utilize the elastic force at swallow-tail form bool two ends to make its resilience become standard compliant part again.Because the mechanical property of sheet material there are differences, screen resilience has nothing in common with each other, and can make U " final angle of bend has bigger difference after the shape part demoulding resilience, influences U " geometric accuracy of shape part.

The utility model content

The purpose of this utility model provide a kind of simple in structure, reliable operation, can one-time positioning, in a minor bend mould, finish the complex bend mould of multiple bending simultaneously.

The utility model is achieved by the following technical programs:

A kind of б shape part one-shot forming complex bend mould, comprise die shank, crooked punch, crooked punch retainer, rotate die, wiggling and pressing block, fixedly die, die socket, die side plate, extension spring, extension spring seat, described crooked punch lower end shape is identical with б shape part inboard shape; Described crooked punch retainer is fixedlyed connected with crooked punch, fixedlys connected with the die shank lower end respectively in described crooked punch upper end, crooked punch retainer upper end; Fixedly connected with die socket in described fixedly die bottom, described rotation die one re-entrant mold mouth is relative in twos with wiggling and pressing block one re-entrant mold mouth, described rotation die lower end and wiggling and pressing block lower end flexibly connect with groove I, the groove II of fixing die upside respectively, and described die side plate is fixedlyed connected with side before and after the fixing die respectively; Described extension spring seat is separately fixed at fixedly die two ends, and described extension spring one end is hinged with the extension spring seat respectively, the extension spring other end respectively with rotate the die opposite side, the wiggling and pressing block opposite side is hinged.

The purpose of this utility model can also further realize by following technical measures.

Aforesaid б shape part one-shot forming complex bend mould, wherein said crooked punch retainer has the profiled holes that matches with crooked punch lower, outer perimeter shape, and crooked punch bottom is embedded in the profiled holes of crooked punch retainer.

Aforesaid б shape part one-shot forming complex bend mould; wherein said rotation die lower end is provided with the rotation die arc head greater than semicircle; the wiggling and pressing block lower end is provided with the wiggling and pressing block arc head greater than semicircle; described rotation die arc head and fixedly die upside groove I, wiggling and pressing block arc head and fixedly die upside groove II matched in clearance; crooked punch and when fixedly die is closed rotates die and wiggling and pressing block and lays respectively at crooked punch both sides.

Aforesaid б shape part one-shot forming complex bend mould, wherein said rotation die upper end is provided with rotates die hinge ear, the wiggling and pressing block upper end is provided with wiggling and pressing block hinge ear, described extension spring one end by swivel pin respectively with rotate die hinge ear, wiggling and pressing block hinge ear is hinged, the extension spring other end is hinged with the screw rod that is fixed on the extension spring seat respectively.

The utility model compact conformation, easy to operate.Existing torsion spring seat is carried out three location, three bendings respectively by three cover bending moulds to sheet metal blank and crooked semi-finished product process, change into and only needing sheet metal blank one-time positioning, once-combined bending, just can make б shape torsion spring seat with the flexural deformation of three places, shape more complicated, accuracy of manufacture height, low cost of manufacture, to take equipment few, and work efficiency is at least more than three times of prior art.Rotation die arc head of the present utility model and rotate die arc head respectively with fixedly die upside groove I, groove II matched in clearance, the arc head rotating shaft of cutting off inefficacy easily needn't be set specially, improved the reliability of bending mould.

Advantage of the present utility model and characteristics will illustrate by the non-limitative illustration of following preferred embodiment and explain that these embodiment only provide as an example with reference to accompanying drawing.

Description of drawings

Fig. 1 is the stereogram of torsion spring seat;

Fig. 2 is torsion spring seat bending forming work step one schematic diagram of prior art;

Fig. 3 is torsion spring seat bending forming work step two schematic diagrames of prior art;

Fig. 4 is the torsion spring seat upset work step schematic diagram of prior art;

Fig. 5 is torsion spring seat bending forming work step three schematic diagrames of prior art;

Fig. 6 is a front view of the present utility model, and workpiece begins bending;

Fig. 7 is a front view of the present utility model, and workpiece is finished complex bend;

Fig. 8 is a three-dimensional exploded view of the present utility model.

The specific embodiment

The utility model is described in further detail below in conjunction with drawings and Examples.

As Fig. 6～shown in Figure 8, the utility model comprises die shank 1, crooked punch 2, crooked punch retainer 3, rotates die 4, wiggling and pressing block 5, fixedly die 6, die socket 7, die side plate 8, extension spring 9, extension spring seat 10, and crooked punch 2 lower end shapes and б shape torsion spring seat 30 inboard shapes are identical; Crooked punch retainer 3 is laterally fixedlyed connected by crooked punch trip bolt 21 with crooked punch 2, have the profiled holes 31 that matches with crooked punch bottom 22 peripheral shape on the crooked punch retainer 3, crooked punch bottom 22 is embedded in the profiled holes 31, fixedly connected with die shank 1 lower end by securing member respectively with crooked punch retainer 3 upper ends in crooked punch 2 upper ends, like this, crooked punch 2, crooked punch retainer 3 and die shank 1 are fixedly connected into overall structure, can prevent effectively because the problem of the thin easy damage of crooked punch 2 substructures.Fixedly fixedly connected with die socket 7 in die 6 bottoms, and fixedly side is fixedlyed connected with die side plate 8 respectively before and after the die, and 8 pairs of die side plates rotate die 4, wiggling and pressing block 5 front and back sides and carry out spacingly, and can be used as the guide plate of crooked punch 2 when entering fixing die 6.It is relative in twos with wiggling and pressing block 5 one re-entrant mold mouths 51 to rotate die 4 one re-entrant mold mouths 41, is used for the bending forming of sheet metal blank 20.

As shown in Figure 6, rotating die hinge ear 42 1 sides as the location benchmark, sheet metal blank 20 left ends are against thereon, and sheet metal blank 20 right-hand members are supported on fixedly on the die 6.Rotation die 4 lower ends are provided with the rotation die arc head 43 greater than semicircle; wiggling and pressing block 5 lower ends are provided with the wiggling and pressing block arc head 53 greater than semicircle, rotate die arc head 43, wiggling and pressing block arc head 53 respectively with fixedly die 6 upside groove I 61, groove II62 matched in clearance.

As shown in Figure 7; descending and when fixedly die 6 is closed when crooked punch 2; rotation die 4 and wiggling and pressing block 5 lay respectively at the both sides of crooked punch 2; crooked punch 2 lower ends promote to rotate die arc head 41 by sheet metal blank 20 and clockwise rotate around its arc center; crooked punch 2 dextral platform 23 promote wiggling and pressing block arc head 51 and rotate counterclockwise around its arc center, finish the complex bend of б shape torsion spring seat 30.

Extension spring seat 10 is separately fixed at fixedly die 6 two ends, extension spring 9 one ends respectively by swivel pin 101 respectively with rotate die hinge ear 42, wiggling and pressing block hinge ear 52 is hinged, the other end is hinged with screw rod 102 1 ends respectively, and screw rod 102 other ends are fixed on the extension spring seat 10 by nut 103.By turn nut 103, screw rod 102 is moved forward and backward, thus the elastic force that can regulate extension spring 9.When crooked punch 2 was up, the elastic force that extension spring 9 resets spurs respectively and rotates die 4, wiggling and pressing block 5 is got back to the home position, and was last, takes out from crooked punch 2 front sides and finishes crooked б shape torsion spring seat 30

In addition to the implementation, the utility model can also have other embodiments, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.

Claims

1. б shape part one-shot forming complex bend mould, it is characterized in that: comprise die shank, crooked punch, crooked punch retainer, rotate die, wiggling and pressing block, fixedly die, die socket, die side plate, extension spring, extension spring seat that described crooked punch lower end shape is identical with б shape part inboard shape; Described crooked punch retainer is fixedlyed connected with crooked punch, fixedlys connected with the die shank lower end respectively in described crooked punch upper end, crooked punch retainer upper end; Fixedly connected with die socket in described fixedly die bottom, described rotation die one re-entrant mold mouth is relative in twos with wiggling and pressing block one re-entrant mold mouth, described rotation die lower end and wiggling and pressing block lower end flexibly connect with groove I, the groove II of fixing die upside respectively, and described die side plate is fixedlyed connected with side before and after the fixing die respectively; Described extension spring seat is separately fixed at fixedly die two ends, and described extension spring one end is hinged with the extension spring seat respectively, the extension spring other end respectively with rotate the die opposite side, the wiggling and pressing block opposite side is hinged.

2. б shape part one-shot forming complex bend mould as claimed in claim 1, it is characterized in that: described crooked punch retainer has the profiled holes that matches with crooked punch lower, outer perimeter shape, and crooked punch bottom is embedded in the profiled holes of crooked punch retainer.

3. б shape part one-shot forming complex bend mould as claimed in claim 1; it is characterized in that: described rotation die lower end is provided with the rotation die arc head greater than semicircle; the wiggling and pressing block lower end is provided with the wiggling and pressing block arc head greater than semicircle; described rotation die arc head and fixedly die upside groove I, wiggling and pressing block arc head and fixedly die upside groove II matched in clearance; crooked punch and when fixedly die is closed rotates die and wiggling and pressing block and lays respectively at crooked punch both sides.

4. б shape part one-shot forming complex bend mould as claimed in claim 3, it is characterized in that: described rotation die upper end is provided with rotates die hinge ear, the wiggling and pressing block upper end is provided with wiggling and pressing block hinge ear, described extension spring one end by swivel pin respectively with rotate die hinge ear, wiggling and pressing block hinge ear is hinged, the extension spring other end is hinged with the screw rod that is fixed on the extension spring seat respectively.