CN106734393B - A kind of composite pressure molding machine and its forming method for bloom sheet metal - Google Patents

A kind of composite pressure molding machine and its forming method for bloom sheet metal Download PDF

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Publication number
CN106734393B
CN106734393B CN201710081828.8A CN201710081828A CN106734393B CN 106734393 B CN106734393 B CN 106734393B CN 201710081828 A CN201710081828 A CN 201710081828A CN 106734393 B CN106734393 B CN 106734393B
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China
Prior art keywords
punch
plate
sheet metal
nitrogen gas
gas spring
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CN201710081828.8A
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CN106734393A (en
Inventor
倪慨宇
吴滨
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Fujian Fuyao Automotive Accessories Co., Ltd.
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Three Fujian Feng Automotive Trim Co
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Priority to CN201710081828.8A priority Critical patent/CN106734393B/en
Publication of CN106734393A publication Critical patent/CN106734393A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/002Positioning devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00Tools as parts of machines covered by this subclass
    • B21D37/10Die sets; Pillar guides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/004Bending sheet metal along straight lines, e.g. to form simple curves with program control
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/02Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means

Abstract

The present invention relates to a kind of composite pressure molding machines and its manufacturing process for bloom sheet metal, including are separately mounted to the upper die and lower die of forcing press upper table surface and following table, and upper die and lower die are oppositely arranged up and down;Upper mold includes the cope plate, upper padding plate and upper frame body set gradually up and down, runs through in the middle part of upper padding plate and upper frame body and offers vertical notch, punch assemblies is movably set in notch, punch assemblies drive through the first nitrogen gas spring;Lower frame body, the active card stripper plate being set on lower frame body and the first flange cutter block and the second flange cutter block being respectively arranged at left and right sides of stripper plate that lower die includes lower template, is set in lower template, second flange cutter block is fixed on a sliding block, sliding block is movably set in the lower template, and the bottom surface of punch assemblies is corresponding up and down with the top side location of stripper plate.The present invention positions unstable caused waste by reducing process and inter process, improves production efficiency and yield rate.

Description

A kind of composite pressure molding machine and its forming method for bloom sheet metal
Technical field
The present invention relates to a kind of composite pressure molding machines and its forming method for bloom sheet metal, are mainly used for Exterior trim stainless steel or magnesium, aluminium alloy sheeting class part in automobile, locomotive etc..
Background technology
Currently, the inside and outside decoration application of vapour, locomotive is increasingly wider, more and more various, this kind of part bloom magnesium multi-purpose greatly, Aluminium alloy and stainless sheet steel manufacture, the surface-type feature unobvious of this kind of product, it is desirable that smooth out very much smooth and to have very high Visual decorative effect, the thin and narrow length of part raw material, manufacturing process quality is not easy to control, and semi-finished product buckling deformation and size are not Consistency is very serious, and with processing negative angle not etc..Because conventional fabrication processes setting process is more, the thin length of process part processing causes Half-finished parts rebound, buckling deformation, size inconsistency are very serious, and machining benchmark is difficult accurately to pass between leading to each process It passs, causes part qualification rate very low, production efficiency is also very low, and manufacturing cost is high, and waste is serious, is mainly reflected in appearance light distortion The defects of unstable with size.
Invention content
The purpose of the present invention is being directed to the above shortcoming, provide a kind of composite pressure for bloom sheet metal at Type device and its forming method improve the production efficiency and quality of product.
Scheme is used by the present invention solves technical problem:A kind of composite pressure for bloom sheet metal is molded dress It sets, including is separately mounted to the upper die and lower die of forcing press upper table surface and following table, the upper die and lower die are oppositely arranged up and down; The upper mold includes the cope plate, upper padding plate and upper frame body set gradually up and down, runs through in the middle part of the upper padding plate and upper frame body and opens Equipped with a vertical notch, a punch assemblies are movably set in the notch, the punch assemblies are driven through the first nitrogen gas spring It is dynamic;The lower die includes lower template, is set in lower template lower frame body, active card are set on lower frame body for placing metal The stripper plate of thin plate and the first flange cutter block and the second flange cutter block being respectively arranged at left and right sides of stripper plate, described second Flange cutter block is fixed on a sliding block, and the sliding block is movably set in the lower template, and is connected on the outside of the sliding block First spring is additionally provided with limited block between the sliding block and the first spring;The bottom surface of the punch assemblies and the stripper plate Top side location is corresponding up and down, and the punch assemblies two sides are turned over the first flange cutter block and the cooperation of the second flange cutter block respectively Side;It is also correspondingly provided on the upper padding plate for driving sliding block to be located at along the inserted block of lower template transverse shifting, the lower template Also cooperation is equipped with the inserted block backrest for limit on the outside of sliding block;The stripper plate drives through the second nitrogen gas spring;Further include several A alignment sensor for being set to sheet metal side, the alignment sensor are respectively arranged at the first flange cutter block, stripper plate In the second flange cutter block;The controller that the alignment sensor is used for molding control with one is electrically connected.
Further, the punch assemblies include that punch retainer and the second punch-pin for being disposed adjacent of left and right and first are convex Mould, first punch-pin are fixed on the punch retainer, and the second punch-pin nesting is set to the first male left-hand lower end, Second punch-pin top surface is fixedly connected with a second spring, and described second spring one end is fixedly connected with the second punch-pin top surface, The other end is fixedly connected with the punch retainer, and is additionally provided with one between second punch-pin top surface and the first punch-pin and is pushed away Block, the pushing block drive through a cylinder assembly;The output end of first nitrogen gas spring and one be set to above cope plate Blow ejecting plate is inconsistent, and described first, which hits board bottom face, is fixedly connected with mandril in downward first, and mandril is worn in described first It crosses the cope plate to contact with the punch retainer, the output end of first nitrogen gas spring hits plate, through first successively Mandril, punch retainer drive first punch-pin in one;The cylinder assembly includes several cylinders and for fixing cylinder Fixed plate connection, the fixed plate hits plate with described first and is fixedly connected, the cylinder through cylinder drive module with it is described Controller is electrically connected.
Further, the upper mold plate top surface is also connect through several top blocks with a upper pallet;The first nitrogen bullet Spring is set in the first nitrogen gas spring fixed plate, and the first nitrogen gas spring fixed plate is fixed on the upper pallet.
Further, the alignment sensor is electrically connected through AD converter and the controller.
Further, the sliding block is movably set on a guide plate, and the guide plate is fixed in lower template.
Further, the lower template bottom surface is also connect through several bottom seat pads with a lower pallet, the second nitrogen bullet Spring is set in the second nitrogen gas spring fixed plate, and the second nitrogen gas spring fixed plate is fixed on the lower pallet, institute It states the output end of the second nitrogen gas spring and second to hit plate inconsistent, described second hits plate through top rod driving de- material in second Plate, mandril is vertically arranged in described second, and one end hits plate with described second and is fixedly connected, and the other end offsets with the stripper plate It touches.
Further, several guide sleeves and several guide posts, the guide post are respectively equipped in the cope plate and lower template It corresponds and coordinates with the guide sleeve.
The present invention also provides a kind of composite pressure molding machine for bloom sheet metal forming method, including with Lower step:
Step S0:Upper die and lower die are individually fixed in the upper table surface and following table of forcing press, are driven by forcing press Mould and the opposite up and down motion of lower die;
Step S1:Sheet metal is placed horizontally on stripper plate, is believed the positioning of sheet metal by alignment sensor Breath is transmitted to controller;
Step S2:Drive cylinder assembly work, cylinder assembly driving pushing block that the second punch-pin is pushed to transport downwards by controller It is dynamic so that the bottom surface of the second punch-pin is concordant with the bottom surface of the first punch-pin, and the first nitrogen gas spring and the second nitrogen gas spring are at this time Original state;
Step S3:Upper mold drives downlink, inserted block and shoe contact by forcing press, and sliding block is driven to be moved to the left, and makes Obtain the second flange cutter block and sheet metal contact aside, the first punch-pin and the second punch-pin and sheet metal under the action of forcing press Inconsistent, sheet metal is pressed into arc;The first nitrogen gas spring and the second nitrogen gas spring are in original state at this time;
Step S4:Stripper plate continues to be pushed by punch assemblies under the drive of forcing press, and sheet metal is in punch assemblies, de- At U-shaped under the mating reaction of flitch, the first flange cutter block and the second flange cutter block, stripper plate is by the first of the first nitrogen gas spring at this time Beginning power F is forced into bottom, and the second nitrogen gas spring is accordingly by one stroke L1 of compression;
Step S5:Upper mold continues to move down a stroke S under the drive of forcing press, and sliding block is further under the action of inserted block It is moved to the left, sheet metal bends inwards on one side under the action of the second flange cutter block, and the sheet metal shaped is convex at this time Membrane module is accordingly compressed, and the first nitrogen gas spring is accordingly by one stroke S of compression;
Step S6:Upper mold goes upward to inserted block under the drive of forcing press and is kept completely separate with sliding block, and sliding block is in the first spring Initial position is returned under effect;The sheet metal of forming drives cylinder assembly return with punch assemblies uplink, by controller, pushes away Block is retracted under the drive of cylinder assembly between the first punch-pin and the second punch-pin;Effect of second punch-pin in second spring at this time It is lower to reply upwards so that the sheet metal of forming is detached from from the second punch-pin, and the first nitrogen gas spring and the second nitrogen gas spring It is corresponding to restore to original state;
Step S7:Step S1 is gone to, the molding of next sheet metal is continued.
Further, the starting force F of first nitrogen gas spring is more than the compressing force of the second nitrogen gas spring, wherein S, L1 is all higher than 0.
Compared with prior art, the present invention has following advantageous effect:Molding machine and its forming method provided by the invention, Bloom metal sheet forming technology process can be made to reduce, reduce the quantity of tooling, development rate is improved, process is greatly decreased Between position it is unstable caused by waste, improve production efficiency and yield rate.It can in vapour, locomotive light sheet decorative kind part forming So that it is completed at the same time two work steps, has effectively eliminated traditional work in one-time positioning benchmark, a reciprocating stroke Product appearance light distortion and the unstable defect of size caused by datum tool is inconsistent between sequence.
Description of the drawings
Patent of the present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the structural schematic diagram of the molding machine upper mold of the embodiment of the present invention;
Fig. 2 is the structural schematic diagram of the molding machine lower die of the embodiment of the present invention;
Fig. 3 is that the upper die and lower die of the embodiment of the present invention coordinate shaping schematic view.
Fig. 4 is the metal sheet profiled preceding schematic diagram of the embodiment of the present invention;
Fig. 5 is the schematic diagram of the sheet metal after the step S3 of the embodiment of the present invention;
Fig. 6 is the schematic diagram of the sheet metal after the step S4 of the embodiment of the present invention;
Fig. 7 is the schematic diagram of the sheet metal after the step S5 of the embodiment of the present invention;
Fig. 8 is the schematic diagram that the sheet metal after the forming of the embodiment of the present invention is detached from from punch assemblies.
In figure:1- upper molds;11- cope plates;12- upper padding plates;13- punch assemblies;130- punch retainers;131- first Punch-pin;The second punch-pin of 132-;14- upper frame bodies;The first nitrogen gas springs of 15-;Mandril in 16- first;17- first hits plate;On 18- Feet;19- upper pallets;2- lower dies;20- lower templates;21- lower frame bodies;22- stripper plates;Mandril in 23- second;The second nitrogen of 24- Spring;25- bottom seat pads;26- lower pallets;27- the first flange cutter blocks;28- the second flange cutter blocks;29- sliding blocks;30- second is hit Plate;31- alignment sensors;3- guide plates;4- limited blocks;The first springs of 5-;6- second springs;7- cylinder assemblies;8- pushing blocks;9- Inserted block;10- inserted block backrests.
Specific implementation mode
The present invention is further described with reference to the accompanying drawings and detailed description.
As shown in Figures 1 to 3, a kind of composite pressure molding machine for bloom sheet metal of the present embodiment, including point Not An Zhuan forcing press upper table surface and following table upper mold 1 and lower die 2, the upper mold 1 and about 2 lower die are oppositely arranged;It is described Upper mold 1 includes cope plate 11, upper padding plate 12 and the upper frame body 14 set gradually up and down, 14 middle part of the upper padding plate 12 and upper frame body Through a vertical notch is offered, a punch assemblies 13 are movably set in the notch, the punch assemblies 13 are through first Nitrogen gas spring 15 drives;The lower die 2 is set to including lower template 20, the lower frame body 21 being set in lower template 20, active card It is used to place the stripper plate 22 of sheet metal on lower frame body 21 and is respectively arranged at the first flange of 22 left and right sides of stripper plate Cutter block 27 and the second flange cutter block 28, the second flange cutter block 28 are fixed on a sliding block 29,29 activity setting of the sliding block In in the lower template 20, and 29 outside of the sliding block is connected with the first spring 5, between the sliding block 29 and the first spring 5 It is additionally provided with limited block 4;The bottom surface of the punch assemblies 13 is corresponding and described convex up and down with the top side location of the stripper plate 22 13 two sides of membrane module coordinate flange with the first flange cutter block 27 and the second flange cutter block 28 respectively;It is also right on the upper padding plate 12 It should be equipped with for driving sliding block 29 to be located at 29 outside of sliding block along the inserted block 9 of 20 transverse shifting of lower template, the lower template 20 also Cooperation is equipped with the inserted block backrest 10 for limit;The stripper plate 22 drives through the second nitrogen gas spring 24;Further include that several set It is placed in the alignment sensor 31 of sheet metal side, the alignment sensor 31 is respectively arranged at the first flange cutter block 27, de- material On plate 22 and the second flange cutter block 28;The controller that the alignment sensor 31 is used for molding control with one is electrically connected.
From the foregoing, the beneficial effects of the present invention are:The molding machine provided through the invention carries out bloom metal The molding of thin plate, it is possible to reduce the technique of forming can make it in one-time positioning benchmark, a reciprocating stroke, be completed at the same time Two work steps(Step S4, step S5), effectively eliminated traditional inter process datum tool it is inconsistent caused by produce The light distortion of product appearance and the unstable defect of size.
In the present embodiment, the punch assemblies 13 include punch retainer 130 and left and right be disposed adjacent it is second convex Mould 132 and the first punch-pin 131, first punch-pin 131 are fixed on the punch retainer 130, and second punch-pin 132 is embedding Set is set to 131 left side lower end of the first punch-pin, and 132 top surface of the second punch-pin is fixedly connected with a second spring 6, and described second 6 one end of spring is fixedly connected with 132 top surface of the second punch-pin, and the other end is fixedly connected with the punch retainer 130, and described A pushing block 8 is additionally provided between second punch-pin, 132 top surface and the first punch-pin 131, the pushing block 8 drives through a cylinder assembly 7;Institute The output end of the first nitrogen gas spring 15 and one is stated to be set to the first of the top of cope plate 11 and hit that plate 17 is inconsistent, and described first hits 17 bottom surface of ejecting plate is fixedly connected with mandril 16 in downward first, in described first mandril 16 pass through the cope plate 11 with it is described Punch retainer 130 contacts, the output end of first nitrogen gas spring 15 successively through first hit mandril 16 in plate 17, first, Punch retainer 130 drives first punch-pin 131;The cylinder assembly 7 is including several cylinders and for fixing cylinder Fixed plate connects, and the fixed plate hits plate 17 with described first and be fixedly connected, the cylinder through cylinder drive module with it is described Controller is electrically connected.Pass through the pushing block 8 being set between the second punch-pin 132 and the first punch-pin 131 so that shaping in sheet metal When, the first punch-pin 131 and 132 bottom surface of the second punch-pin are concordant;When sheet metal is detached from, pushing block 8 is exited, in the first spring 5 Under the action of, the second punch-pin 132 restores to initial position, realizes the fast demoulding of sheet metal.Fixation for fixing cylinder Plate hits plate 17 with first and connect, and realizes that cylinder assembly 7 is with punch set when the first nitrogen gas spring 15 pushes punch assemblies 13 Part 13 moves down simultaneously, prevents the output shaft of cylinder assembly 7 from causing to fracture.By between the second punch-pin 132 and the first punch-pin 131 Setting, the second punch-pin 132 realizes fast demoulding under the action of second spring 6 after realizing machine-shaping.Punch retainer 130 is also It is set and is limited in the caging bolt on cope plate 11.
In the present embodiment, 11 top surface of the cope plate is also connect through several top blocks 18 with a upper pallet 19;It is described First nitrogen gas spring 15 is set in 15 fixed plate of the first nitrogen gas spring, and 15 fixed plate of the first nitrogen gas spring is fixed on On the upper pallet 19.
In the present embodiment, the alignment sensor 31 is electrically connected through AD converter and the controller.The controller can Think microcontroller or PLC controller, the signal of alignment sensor 31 is received by controller, alignment sensor 31 is photoelectric sensing Whether device, detection sheet metal are in place.
In the present embodiment, the sliding block 29 is movably set on a guide plate 3, and the guide plate 3 is fixed on lower template On 20.The sliding block 29 is driven by inserted block 9 in upper mold 1 so that sliding block 29 the second flange cutter block 28 and inserted block backrest it Between move.
In the present embodiment, 20 bottom surface of the lower template is also connect through several bottom seat pads 25 with a lower pallet 26, described Second nitrogen gas spring 24 is set in 24 fixed plate of the second nitrogen gas spring, and 24 fixed plate of the second nitrogen gas spring is fixed on On the lower pallet 26, the output end of second nitrogen gas spring 24 hits that plate 30 is inconsistent, and described second hits plate with second 30 drive stripper plate 22 through mandril 23 in second, and mandril 23 is vertically arranged in described second, and one end and described second hits plate 30 It is fixedly connected, the other end and the stripper plate 22 are inconsistent.Second nitrogen gas spring 24 hits plate 30 through second and drives stripper plate 22.
In the present embodiment, several guide sleeves and several guide posts are respectively equipped in the cope plate 11 and lower template 20, The guide post is corresponded with the guide sleeve to be coordinated.Several positioning are further respectively had in the cope plate 11 and lower template 20 Block realizes the accurate positionin of upper mold 1 and lower die 2.
As viewed in figures 5-8, the present invention also provides a kind of composite pressure molding machine for bloom sheet metal at Type method, includes the following steps:
Step S0:Upper mold 1 and lower die 2 are individually fixed in the upper table surface and following table of forcing press, driven by forcing press Upper mold 1 and the opposite up and down motion of lower die 2;
Step S1:Sheet metal is placed horizontally on stripper plate 22, the determining sheet metal of alignment sensor 31 is passed through Position information is transmitted to controller;
Step S2:Cylinder assembly 7 is driven to work by controller, cylinder assembly 7 drives pushing block 8 to push the second punch-pin 132 It moves downward so that the bottom surface of the second punch-pin 132 is concordant with the bottom surface of the first punch-pin 131;
Step S3:Upper mold 1 drives downlink by forcing press, and inserted block 9 contacts with sliding block 29, and drives sliding block 29 to moving to left It is dynamic so that the second flange cutter block 28 and sheet metal contact aside, the first punch-pin 131 and the second punch-pin under the action of forcing press 132 is inconsistent with sheet metal, and sheet metal is pressed into arc, at this time at the first nitrogen gas spring 15 and the second nitrogen gas spring 24 In original state;
Step S4:Stripper plate 22 continues to be pushed by punch assemblies 13 under the drive of forcing press, and sheet metal is in punch set At U-shaped under the mating reaction of part 13, the first flange cutter block 27 and the second flange cutter block 28, stripper plate 22 is by the first nitrogen bullet at this time The starting force F of spring 15 is forced into bottom, and the second nitrogen gas spring 24 is accordingly by one stroke L1 of compression;
Step S5:Upper mold 1 continues to move down under the drive of forcing press a stroke S, sliding block 29 under the action of inserted block 9 into One step is moved to the left, and sheet metal bends inwards on one side under the action of the second flange cutter block 28, the sheet metal shaped; Punch assemblies are accordingly compressed at this time, and the first nitrogen gas spring is accordingly by one stroke S of compression;
Step S6:Upper mold 1 goes upward to inserted block 9 under the drive of forcing press and is kept completely separate with sliding block 29, and sliding block 29 is first Initial position is returned under the action of spring 5;The sheet metal of forming drives air cylinder group with 13 uplink of punch assemblies by controller 7 return of part, pushing block 8 are retracted under the drive of cylinder assembly 7 between the first punch-pin 131 and the second punch-pin 132;Second is convex at this time Mould 132 is replied upwards under the action of second spring 6 so that and the sheet metal of forming is detached from from the second punch-pin 132, and the One nitrogen gas spring 15 and the second nitrogen gas spring 24 accordingly restore to original state;
Step S7:Step S1 is gone to, the molding of next sheet metal is continued.
In the present embodiment, the starting force F of first nitrogen gas spring 15 is more than the compressing force of the second nitrogen gas spring 24, Wherein S, L1 are all higher than 0.By the starting force of the first nitrogen gas spring 15 end-state is compressed to more than the second nitrogen gas spring 24 Power, i.e.,, ensure that processed sheet metal will not be displaced or deform when carrying out step S5.
In conclusion a kind of composite pressure molding machine and its molding side for bloom sheet metal provided by the invention Method, it is simple in structure, the unstable caused waste of inter process positioning is greatly decreased, improves production efficiency and yield rate.
Above-listed preferred embodiment, has been further described the object, technical solutions and advantages of the present invention, is answered Understand, the foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.

Claims (7)

1. a kind of composite pressure molding machine for bloom sheet metal, it is characterised in that:Including being separately mounted to forcing press The upper die and lower die of upper table surface and following table, the upper die and lower die are oppositely arranged up and down;The upper mold includes setting successively up and down Run through in the middle part of cope plate, upper padding plate and the upper frame body set, the upper padding plate and upper frame body and offers a vertical notch, it is described to lack A punch assemblies are movably set in mouthful, the punch assemblies drive through the first nitrogen gas spring;The lower die includes lower template, sets The lower frame body that is placed in lower template, active card are set to the stripper plate on lower frame body for placing sheet metal and are respectively set The first flange cutter block at left and right sides of stripper plate and the second flange cutter block, the second flange cutter block are fixed on a sliding block, The sliding block is movably set in the lower template, and is connected with the first spring, the sliding block and first on the outside of the sliding block Limited block is additionally provided between spring;The bottom surface of the punch assemblies is corresponding up and down with the top side location of the stripper plate, and institute It states punch assemblies two sides and coordinates flange with the first flange cutter block and the second flange cutter block respectively;Also correspondence is set on the upper padding plate It is useful for inserted block of the driving sliding block along lower template transverse shifting, is located in the lower template on the outside of sliding block and also coordinates equipped with for limiting The inserted block backrest of position;The stripper plate drives through the second nitrogen gas spring;Further include that several are set to determining for sheet metal side Level sensor, the alignment sensor are respectively arranged in the first flange cutter block, stripper plate and the second flange cutter block;The positioning The controller that sensor is used for molding control with one is electrically connected;The punch assemblies include that punch retainer and left and right are disposed adjacent The second punch-pin and the first punch-pin, first punch-pin is fixed on the punch retainer, the second punch-pin nesting setting In the first male left-hand lower end, second punch-pin top surface is fixedly connected with a second spring, described second spring one end and the Two punch-pin top surfaces are fixedly connected, and the other end is fixedly connected with the punch retainer, and second punch-pin top surface and first A pushing block is additionally provided between punch-pin, the pushing block drives through a cylinder assembly;The output end and one of first nitrogen gas spring It is set to first above cope plate and hits that plate is inconsistent, described first, which hits board bottom face, is fixedly connected with top in downward first Bar, mandril is contacted across the cope plate with the punch retainer in described first, the output end of first nitrogen gas spring Hit that plate, mandril, punch retainer drive first punch-pin in first through first successively;The cylinder assembly includes several Cylinder is connected with the fixed plate for fixing cylinder, and the fixed plate hits plate with described first and is fixedly connected, the cylinder warp Cylinder drive module is electrically connected with the controller;
Its forming method, includes the following steps:
Step S0:Upper die and lower die are individually fixed in the upper table surface and following table of forcing press, by forcing press drive upper mold and Lower die is opposite to move up and down;
Step S1:Sheet metal is placed horizontally on stripper plate, is passed the location information of sheet metal by alignment sensor Transport to controller;
Step S2:Cylinder assembly work, cylinder assembly driving pushing block is driven to push the second punch-pin to move downward, make by controller The bottom surface for obtaining the second punch-pin is concordant with the bottom surface of the first punch-pin;
Step S3:Upper mold drives downlink, inserted block and shoe contact by forcing press, and sliding block is driven to be moved to the left so that the Two flange cutter blocks and sheet metal contact aside, the first punch-pin and the second punch-pin offset with sheet metal under the action of forcing press It touches, sheet metal is pressed into arc;The first nitrogen gas spring and the second nitrogen gas spring are in original state at this time;
Step S4:Stripper plate continues to be pushed by punch assemblies under the drive of forcing press, and sheet metal is in punch assemblies, de- material At U-shaped under the mating reaction of plate, the first flange cutter block and the second flange cutter block, stripper plate is by the initial of the first nitrogen gas spring at this time Power F is forced into bottom, and the second nitrogen gas spring is accordingly by one stroke L1 of compression;
Step S5:Upper mold continues to move down under the drive of forcing press a stroke S, sliding block under the action of inserted block further to the left Mobile, sheet metal bends inwards on one side under the action of the second flange cutter block, the sheet metal shaped, at this time punch set Part is accordingly compressed, and the first nitrogen gas spring is accordingly by one stroke S of compression;
Step S6:Upper mold goes upward to inserted block under the drive of forcing press and is kept completely separate with sliding block, effect of the sliding block in the first spring Under return to initial position;The sheet metal of forming drives cylinder assembly return, pushing block to exist with punch assemblies uplink, by controller It is retracted between the first punch-pin and the second punch-pin under the drive of cylinder assembly;At this time the second punch-pin under the action of second spring to Upper reply so that the sheet metal of forming is detached from from the second punch-pin, and the first nitrogen gas spring and the second nitrogen gas spring are corresponding Restore to original state;
Step S7:Step S1 is gone to, the molding of next sheet metal is continued.
2. the composite pressure molding machine according to claim 1 for bloom sheet metal, it is characterised in that:On described Template top surface is also connect through several top blocks with a upper pallet;First nitrogen gas spring is set to the first nitrogen gas spring and fixes On plate, the first nitrogen gas spring fixed plate is fixed on the upper pallet.
3. the composite pressure molding machine according to claim 1 for bloom sheet metal, it is characterised in that:It is described Alignment sensor is electrically connected through AD converter and the controller.
4. the composite pressure molding machine according to claim 1 for bloom sheet metal, it is characterised in that:The cunning Block is movably set on a guide plate, and the guide plate is fixed in lower template.
5. the composite pressure molding machine according to claim 1 for bloom sheet metal, it is characterised in that:Under described Template bottom surface is also connect through several bottom seat pads with a lower pallet, and second nitrogen gas spring is set to the second nitrogen gas spring and fixes On plate, the second nitrogen gas spring fixed plate is fixed on the lower pallet, the output end and second of second nitrogen gas spring It is inconsistent to hit plate, described second hits plate through top rod driving stripper plate in second, and mandril is vertically arranged in described second, one end Plate is hit with described second to be fixedly connected, the other end and the stripper plate are inconsistent.
6. the composite pressure molding machine according to claim 1 for bloom sheet metal, it is characterised in that:On described Several guide sleeves and several guide posts are respectively equipped in template and lower template, the guide post is corresponded with the guide sleeve to be coordinated.
7. the composite pressure molding machine according to claim 1 for bloom sheet metal, it is characterised in that:Described The starting force F of one nitrogen gas spring is more than the compressing force of the second nitrogen gas spring, and wherein S, L1 is all higher than 0.
CN201710081828.8A 2017-02-15 2017-02-15 A kind of composite pressure molding machine and its forming method for bloom sheet metal Active CN106734393B (en)

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CN202367044U (en) * 2011-05-28 2012-08-08 牟维军 V-shaped member bending die with inclined wedges
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Address after: 350300 Fuyao Industrial Village, Fuzhou City, Fujian Province

Patentee after: Fujian Fuyao Automotive Accessories Co., Ltd.

Address before: Fuqing City, Fuzhou City, Fujian province 350301 Fuyao Industrial Zone II

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