CN207271874U - One kind series connection insert splicing bending mould - Google Patents

Abstract

The utility model provides a kind of series connection insert splicing bending mould, belongs to mechanical stamping technical field, reduces weld defect, reduces leveling man-hour caused by thermal deformation and reduces labor intensity；Solve the problems, such as the production slot of " Z " shape bending；Mould is made of punch assemblies, cavity plate component and positioner three parts；Punch assemblies and cavity plate component are using insert tandem compound splicing punch and matrix insert；Punch assemblies include the identical simply different punch insert of length of seven kinds of structures；Multiple product bending is completed by piece bending mould, die manufacturing cost is reduced, can quickly change the mold, improve the uniformity of product batches.

Description

One kind series connection insert splicing bending mould

Technical field

The utility model belongs to mechanical stamping technical field, is related to sheet metal bending and bending mould.

Background technology

(1) background technology scheme：

It is back-shaped groove framework, groove and the curved narrow required precision of plate body Z-shaped among the panel with rivet hole that shape of product, which is, Height, groove is narrow, and outside is high.This part is applicable in curved basic principle, and bending can be carried out in forcing press using mould, can also rolled over Used on bender, (as shown in Figure 1 and Figure 2).

In the past, back-shaped groove framework and Z-shaped were curved can not be completed using existing Bending Mould, divide three body bending single-pieces to spell always Weldering processing.(as shown in Figure 3, Figure 4), product 1 is the panel with rivet hole, and product 2 and product 3 are that structure is identical length Difference, is converted into channel steel, then product 2 and product 3 are welded on product 1.3 product of product 2 and product, (such as Fig. 5, Fig. 6 institute Show).Welding manner and the sectional view part of position (as shown in Figure 4).Welding procedure is that the material of welded piece is (of the same race or different Kind) by heating, and with or without packing material, the material of workpiece is reached interatomic and build and and form permanent connection Technical process.This technical process can make product produce very big thermal deformation.

Bending process is the shape needs according to part, and plate is bent by mould and forcing press (bender, punching machine) Have a certain degree, certain curvature, form the Sheet Metal Forming Technology method of definite shape part.Mould is installed on bender, with Slide block down plate outer layer fiber is stretched, and internal layer is squeezed contracting, and neutral line is constant, and at this moment steel plate is pressed into certain angle, bending Complete.Curved super-long structure is in the industrial production using quite extensive, such as many automobiles, tractor, electric appliance, instrument, electronics, state Covering, tank bracket component, stent, button, clip in the industry such as anti-etc..The product is closed back-shaped groove frame flex part, material Material is steel plate 3/Q235-A, so being also applied for bending principle (as shown in Fig. 7 Fig. 8).Straight punch-pin 2 is consolidated using lathe bolt It is scheduled on convex mould pad 1, general cavity plate 4 is fixed on cavity plate backing plate 5, is controlled by bender between mould closure height and mould Gap, the i.e. pushing of guarantee punch-pin will not be too deep or cannot be compacted, punch-pin downlink, under the pressure of punch-pin, the effect of plate bending moment, Elastic deformation is first passed around, subsequently into plastic deformation, in the plastic deformation incipient stage, plate is free bend.With punch-pin Pushing, plate is gradually close to cavity plate V-arrangement surface.Radius of curvature and bending moment arm taper at the same time, and punch-pin is pushed, Sheet metal bending deformed area continues to reduce, until with punch-pin three point contact, to stroke end its value side, fillet and punch-pin is all leaned on Tightly.Bending forming process terminates.

(2) the defects of background technology：

Back-shaped groove framework uses multistage split welding manufacture, and postwelding thermal deformation is big, reaches 30-50mm torsional deformations, weld seam Need substantial amounts of hand grinding, in addition narrow slot at all can not trimming, need manual leveling straightening at deformation, leveling is often lifted up Seesaw effect, labor intensity is big, and presentation quality and dimensional uniformity are poor, and production efficiency is low, also has the inspection etc. of welding product Problem.This kind of frame structure is the same, simply the change in size of framework length and width.Such as each size does one set of die, significantly Increase die manufacturing cost.Existing Universal bending die tool can not meet product needs, and small lot, the production of multi items at all Mode feature.

Utility model content

In order to solve the above technical problems, the utility model provides a kind of back-shaped more efficiently processing method of groove framework, carry A kind of simple series connection insert bending mould for the processing of back-shaped groove framework is supplied.

Split weld length is reduced using piece frock bending technique technology and is manufactured using general supplementary angle process.Subtract Few weld defect, reduces leveling man-hour caused by thermal deformation and reduces labor intensity；The production slot for solving " Z " shape bending is asked Topic, does not have to adjusting after shaping, improve production efficiency.

Multiple product bending is completed by piece bending mould, die manufacturing cost is reduced, can quickly change the mold, is improved The uniformity of product batches.

This method and mould are applicable in flexible shaping, have enough plasticity, yield tensile ratio (σ_b/σ_s) small, yield point and elasticity Ratio (the σ of modulus_b/ E) small metal material.For example, the material such as mild steel, brass and aluminium, thickness≤3mm, length≤1500mm Product.

The technical solution of the utility model is：One kind series connection insert splicing bending mould, by punch assemblies, cavity plate component and Positioner three parts form；Punch assemblies and cavity plate component are using insert tandem compound splicing punch and matrix insert；Punch set Part includes the identical simply different punch insert of length of seven kinds of structures, and punch assemblies section is big radian tulwar shape；Cavity plate group Part is made of cavity plate and die socket, is coordinated between cavity plate and die socket for transition, cavity plate is pressed among die socket, Liang Zhegu It is scheduled on together；Cavity plate includes that with seven kinds of size die plate inserts, each series connection different lengths size can be combined as；Cavity plate is boss Structure, V of the crook of part to the distance of end when cavity plate V-shaped groove center line to cavity plate left side outer wall dimension is second of bending For shape groove center line to cavity plate outer wall distance, cavity plate is the symmetrical slot structure of double V-arrangements；Die socket carries a wide groove among it, recessed Mould clamping is in die socket；Positioner is made of fastening bolt, positioning plate, locking nut and positioning bolt；By fastening spiral shell Positioning plate is fixed on die socket by bolt, and fastening bolt is withstood on cavity plate through die socket；On positioning plate away from top just above Position processing tapped through hole at the top of cavity plate, the positioning bolt precession tapped through hole, and locking nut is used on the outside of positioning plate It is fixed；Die socket has multiple holes for fastening bolt, enables increase and decrease of the positioning plate with die plate insert quantity along recessed Die holder moves.

Preferably, punch and matrix insert is fabricated to 50,80,100,150,200,300,500mm seven kinds of length dimensions respectively； Seven kinds of dimension combination different lengths.

Preferably, punch-pin mouth width dimensions 11mm, is respectively designed to three kinds of fillet sizes.

Preferably, punch insert material selects 42GrMo materials, integral quenching HRC47 ± 2, punch insert series connection splicing Clamping is on bender.

Preferably, die socket Design of length is 1500mm, carries a 50mm wide groove among it.

Preferably, cavity plate assembly material selects 42GrMo materials, integral quenching HRC47 ± 2.

Preferably, during second of bending of part, the crook of part to distance, that is, V-shaped groove center line of end to cavity plate outer wall Distance, is 8.5mm.

Back-shaped groove framework processing method, step are as follows：

First time bending step：According to bending linear dimension, rotational positioning bolt stretches out the length of positioning plate, makes cavity plate V-arrangement Groove center is equal to bending linear dimension to positioning bolt distance, and locking nut, plate is lain on cavity plate, and plate and positioning Bolt is close to, and punch-pin pushes, and product type is into first time bending；

Second of bending step：First dismantle positioner, first time bending upset 180 degree is buckled on cavity plate, with cavity plate Outer wall is close to, and is positioned with outer wall on the left of cavity plate, cavity plate V-shaped groove center line is equal to cavity plate outer wall distance and is calculated secondary bending Bending linear dimension, punch-pin pushes, and product type is into second of bending；

Third time bending step：Positioner is reinstalled, readjusts positioning bolt, locking nut will be second Bending turns back 180 degree and is placed on cavity plate again, is close to positioning bolt, by bending line sizing, completes third time bending, completes The bending on one side.

Preferably, back-shaped groove framework processing method, step are as follows：

The long Edge Bend of two back-shaped groove frameworks is first completed by above-mentioned bending three times order, then completes the folding of two short sides Curved, framework bending is completed.

Mould structure is simple, weight is light, easy to operate, highly practical.Bending die structure is by punch-pin, die set Formed with positioner three parts.Wherein cavity plate is mainly made of die plate insert, die socket, and cavity plate transition coordinates fixed die socket In, according to product length series connection die plate insert, accomplish quickly to change the mold；Positioner has two kinds of positioning fractions；Punch-pin is mainly by curved Knife punch insert forms, of different sizes according to product bending R, has separately designed R1-3 kind punch-pin and has been used in series the various length of composition Size.Manufacture experimently and be used for the one group of effective die parameters L produced_A=14；r_T=1；R_A=0.8；R_A1=0.2；β=88 degree, such as Shown in Figure 11.And with both the above positioning method, the bending time-division, three steps was implemented, and completed the bending three times of framework, solved Z " shapes Curved production slot problem, as shown in Figure 16 .17.18.

The technique effect of the utility model is as follows：

Split weld length is reduced using special insert frock bending technique technology and uses general supplementary angle process system Make.(general supplementary angle can standardize)

1st, the product processed by press device and special bending mould, has the following advantages compared with being shaped with welding：

1) weld seam is reduced 90%-95% by such a method, saves the nearly 90%-95% of wlding, artificial one piece of leveling is by 3 Hour is reduced to 30 minutes, substantially reduces labor strength.Product appearance quality is improved, ensures the uniformity of size.Contracting In short Product processing man-hour, reduce manufacturing procedure, reduces laser cutting length 2/3.

Bending special tooling technology is combined by using multistage, improvement is clearly.Fusion length is reduced 95%.The leveling time by it is original one piece 3 small when, shorten to complete for 30 minutes, greatly reduce labor strength, presentation quality and Dimensional uniformity is good, substantially increases production efficiency.

A, during leveling section：By annual 700, every is averaged with 2, when every piece of saving 2.5 is small, 23 yuan per hour, X23 members/hour=80500 yuan when 700X2X2.5 is small；

B, during weld seam section：Average 2.8 meters of every weld seam length, 20 ms/h of (2.8 × 95% × 2 × 700)/20 of weldering speed × 23=4282.6 members

C, laser cutting and wlding consumption do not count.

2) mould only needs before start, first by framework long side clamping punch-die insert, after the completion of two long Edge Bends, by short Side size directly unloads the insert of lower part punch-die, then rolls over short both sides.Mould need not be so debugged, is not interfered with mounted in machine The straightness of bed mold, and while also being saved during mould unloading, is laborsaving, it is not necessary to adjusting is carried out to product, labor intensity is small, accomplishes quick Mold changing, accomplishes one module multiple usages, saves substantial amounts of mold manufacturing expense, the administration fee of mold storing.

According to statistics some projects：Count seven kinds of vehicles, about 22.5 meters of framework size

Comprehensive various factors mold manufacturing 1.5 ten thousand/rice of expense, ten thousand yuan of 22.5 × 1.5=33.75,

1.5 meters of combination die length, ten thousand yuan of 1.5 × 1.5=2.25, saves 31.5 ten thousand yuan of mold manufacturing expense.

The time is saved in the characteristics of suitable multi items, small lot produces, quick mold changing：A mould is changed, the interior activity duration subtracts Few 37.4 minutes, the outer activity duration reduced 32 minutes, in batches by 700 ÷, 30=23.33 batches (37.4+32)/60 × 23.33 × 23 yuan/hour=1414.75 yuan

3) product size precision wants higher, and presentation quality is good, arc transition naturally, and product batches uniformity it is good.

2nd, special bending mould design structure is simple and convenient to operate, to manufacture cost low, can accomplish quickly to change the mold, practical The advantages that property is strong.

Brief description of the drawings

Fig. 1 Product processing portion profile figures

Fig. 2 product design sectional views

Fig. 3 Product processings part original conceptual scheme

Fig. 4 Product processings part original scheme sectional view

Fig. 5 products 2 and 3 product front view of product (length of two kinds of parts is different)

3 product left view of Fig. 6 products 2 and product

Fig. 7 bender operation principle front views

Fig. 8 bender operation principle sectional views

Fig. 9 punch assemblies schematic diagrames

Figure 10 cavity plate component diagrams

Figure 11 positioner schematic diagrames

Figure 12 cavity plate left views

Figure 13 cavity plate left views

Figure 14 positioner installation site left views

Figure 15 die parameters illustrate schematic diagram

Bending schematic diagram of Figure 16

The secondary bending schematic diagrames of Figure 17

Figure 18 bending schematic diagrames three times.

Figure 19 cavity plate front views；

Figure 20 die socket front views；

Figure 21 positioner installation site front views.

Wherein, straight 6 plate of punch-pin, the 7 general cavity plate 8 of 4 convex mould pads 5 installs 9 cavity plate of backing plate, 10 die socket I-match somebody with somebody 15 plate 16 1 of conjunction face 11 M10X45 fastening bolts, 12 positioning plate, 13 M10 locking nuts, 14 M10X40 positioning bolts Secondary 17 2 bendings three times of bending 18 of bending.

Embodiment

The utility model is described in further detail below in conjunction with the accompanying drawings.

The simple series connection insert bending mould of one kind of the utility model is (as schemed by punch assemblies (such as Fig. 9), cavity plate component 10) formed with positioner (such as Figure 11) three parts.Punch assemblies and cavity plate component are spliced convex, recessed using insert tandem compound Mould insert, according to the back-shaped diversified feature of groove framework length dimension.

Punch and matrix insert is fabricated to 50,80,100,150,200,300,500mm seven kinds of length dimensions, seven kinds of sizes respectively Various length are freely combined, insert tandem docking is seamless, accomplishes to adapt to the variation of product size.Improve punch-pin, cavity plate at the same time Utilization rate, accomplishes one module multiple usages, saves substantial amounts of mold manufacturing expense, the administration fee of mold storing.

The identical simply length of seven kinds of punch insert contour structures is different in punch assemblies (such as Fig. 9), if punch-pin is made directly Can interfere with the folding curved above product of twice, therefore make big radian tulwar shape, punch-pin mouth width dimensions 11mm, both ensures mould Intensity, i.e., the situation of preceding working procedure interference later process when preventing twice above bending process again, meets the needs of folding narrow slot.For Meet the different needs of product fillet, be respectively designed to tri- kinds of fillet sizes of R1, R2, R3.Punch insert material is selected 42GrMo materials, integral quenching HRC47 ± 2.The material high intensity of selection, quenching degree is good, good toughness.Punch-pin series connection splicing clamping On bender, fixation is connected with lathe by lathe bolt itself, docking is seamless, dismounts the punch-pin of partial-length as needed Block, quick mold changing, completes the product bending of different length.This design punch structure is simple, and light-weight, convenient mounting and clamping, reduces mould Tool takes up an area, and can be fixed using itself lathe bolt.

Cavity plate component (such as Figure 10), is made of cavity plate (such as Figure 12) and die socket (such as Figure 13), female die block and die socket it Between for transition coordinate 50H7/k6 (marker I), cavity plate is pressed among die socket, pass through fastening bolt (11 in such as Figure 10) will Both are fixed together.Shown in cavity plate (such as Figure 12), connected using seven kinds of size inserts, various length dimensions can be freely combined. Only die plate insert quantity need to be increased and decreased according to product bending length dimension in production, accomplish quickly to change the mold.Cavity plate makes boss knot Structure, both ensures mould strength, also reduces the waste of finishing；Cavity plate V-shaped groove center line (passes through V-shaped groove to cavity plate outer wall 8.5mm The distance of center line and cavity plate outer wall carries out part positioning), cavity plate outer wall can be used to position (positioning is used when folding second is curved), It can be operated with safe ready, also solve the limitation for using bending machine tool self poisoning in the past；Double symmetrical slot structures of V-arrangement, can be with When mould local damage is needed to replicate and replaced, without considering installation direction.Shown in die socket (such as Figure 13), Design of length is 1500mm, carries a 50mm wide groove among it, it is ensured that straightness of the cavity plate clamping in die socket, stability, make Insert docking is smooth.The cavity plate coordinates 50H7/k6 with die socket transition, it is ensured that die plate insert, which slips into, pine also should not excessively Tension.Once there is mould local damage, the die location adjustment of die plate insert can be easy to and replicated.Cavity plate assembly material selects With 42GrMo materials, integral quenching HRC47 ± 2.The material high intensity of selection, quenching degree is good, good toughness.In order to fasten cavity plate And positioning plate, prepare 28 M10X45 fastening bolts (can determine dosage, including two in positioner according to insert quantity Bar).

Positioner (such as Figure 11), is made of fastening bolt 11, positioning plate 12, locking nut 13 and positioning bolt 14. 11 specification of fastening bolt is M10X45 (two), and 12 size of positioning plate is 135X25X10 (two pieces), and locking nut is M10 (two It is a) and 14 specification of positioning bolt be M10X40 (two), positioning plate is fixed on die socket (such as Figure 14) by fastening bolt, this Two bolts also can both be fixed cavity plate at the same time, cavity plate is withstood on through die socket with stationary positioned plate.Respectively in two pieces of positioning Each machine in position of the plate away from top 11mm adds the tapped through hole of a M10, with positioning bolt precession threaded hole, and on the outside of positioning plate Fixed using locking nut, the length that rotational positioning bolt can be needed to stretch out according to bending size, plays the role of positioning.Cavity plate Seat tool has multiple holes for fastening bolt, positioning plate is moved with the increase and decrease of die plate insert quantity along die socket. The material selection 42GrMo materials of positioning plate, integral quenching HRC47 ± 2.The material high intensity of selection, quenching degree is good, toughness.

Mould machines, die parameters (such as Figure 15) r for back-shaped geosynclinal block body bending_T=1； L_A=14；R_A= 0.8；R_A1=0.2；β=88 degree, with two kinds of positioning methods, first install punch and matrix insert by back-shaped groove framework lengthwise dimension, Two long Edge Bends, punch and matrix insert of then dismantling are completed, two widths that back-shaped geosynclinal block body is completed with remaining mould are rolled over It is curved.Order installation mold is debugged the mould time again after can saving punch and matrix insert of dismantling by, clamped one time mould folding Curved precision is high.Three step of bending time-division is implemented, and completes the bending three times of framework, solves the problems, such as the curved production slot of Z " shapes.

Step is as follows：

First time bending (such as Figure 16), according to bending linear dimension, rotational positioning bolt 14 stretches out the length of positioning plate, makes recessed Mould V-shaped groove center is equal to bending linear dimension to positioning bolt distance, and locking nut, plate 15 is lain on cavity plate, and plate Material is close to positioning bolt, and punch-pin pushing, product type is into first time bending 16.

Second of bending (such as Figure 17), positioner of first dismantling, by first time bending 16 overturn 180 degree be buckled in by diagram it is recessed On mould, it is close to cavity plate outer wall, is positioned with outer wall on the left of cavity plate, makes cavity plate V-shaped groove center line to cavity plate outer wall distance 8.mm5 etc. In the bending linear dimension for calculating secondary bending, punch-pin pushes, and product type is into second of bending 17.

Third time bending (such as Figure 18), reinstalls positioner, readjusts positioning bolt, locking nut, by Secondary bending 17, then turn back 180 degree (returning to original direction) and lain in by diagram on cavity plate, it is close to positioning bolt, equally By bending line sizing, third time bending is completed, product type is into third time bending 18.First completed by above-mentioned bending three times order The long Edge Bend of two back-shaped groove frameworks, then the bending of two short sides is completed, framework bending is completed.

Claims (7)

1. one kind series connection insert splicing bending mould, it is characterised in that by punch assemblies, cavity plate component and positioner three parts Composition；Punch assemblies and cavity plate component are using insert tandem compound splicing punch and matrix insert；

Punch assemblies include the different punch insert of seven kinds of structure equal lengths, and punch assemblies section is big radian tulwar shape,

Cavity plate component is made of cavity plate and die socket, coordinates between cavity plate and die socket for transition, cavity plate is pressed into die socket In the middle, both are fixed together；Cavity plate includes that with seven kinds of size die plate inserts, each series connection different lengths ruler can be combined as It is very little；Cavity plate is boss structure, and the crook of part is arrived when cavity plate V-shaped groove center line to cavity plate left side outer wall dimension is second of bending For the V-shaped groove center line of the distance of end to cavity plate outer wall distance, cavity plate is the symmetrical slot structure of double V-arrangements；

Die socket carries a wide groove among it, and cavity plate clamping is in die socket；

Positioner is made of fastening bolt, positioning plate, locking nut and positioning bolt；Positioning plate is fixed by fastening bolt On die socket, fastening bolt is withstood on cavity plate through die socket；

On positioning plate away from top just above at the top of cavity plate position process tapped through hole, the positioning bolt precession tapped through hole, And fixed on the outside of positioning plate using locking nut；

Die socket has multiple holes for fastening bolt, enables increase and decrease of the positioning plate with die plate insert quantity along cavity plate Seat is mobile.

2. a kind of series connection insert splicing bending mould according to claim 1, it is characterised in that punch and matrix insert is distinguished It is fabricated to 50,80,100,150,200,300,500mm seven kinds of length dimensions；Seven kinds of dimension combination different lengths.

A kind of 3. series connection insert splicing bending mould according to claim 1, it is characterised in that punch-pin mouth width dimensions 11mm, is respectively designed to three kinds of fillet sizes.

4. a kind of series connection insert splicing bending mould according to claim 1, it is characterised in that punch insert material selects With 42GrMo materials, integral quenching HRC47 ± 2, punch insert series connection splicing clamping is on bender.

5. a kind of series connection insert splicing bending mould according to claim 1, it is characterised in that die socket Design of length is 1500mm, carries a 50mm wide groove among it.

6. a kind of series connection insert splicing bending mould according to claim 1, it is characterised in that cavity plate assembly material selects With 42GrMo materials, integral quenching HRC47 ± 2.

A kind of 7. series connection insert splicing bending mould according to claim 1, it is characterised in that second of bending of part When, the crook of part is 8.5mm to distance, that is, V-shaped groove center line of end to cavity plate outer wall distance.