CN205904249U - Draw elbow that draws that trimming die possesses and use this mould production - Google Patents

Abstract

The utility model discloses a draw elbow that draws that trimming die possesses and use this mould production, including drawing the terrace die and drawing the die, it is provided with the recess of stepping down to draw the die inside wall, it is provided with elasticity butt portion in the recess to step down, elasticity butt portion protrusion under natural state draws the opening of die, behind the elasticity butt portion pressurized completely the retraction step down in the recess, its technical scheme main points are the in -processs that draw the elbow in the shaping of blank panel, blank panel is drawn the terrace die all the time and is supported tightly with elasticity butt portion, thereby prevent the incline of blank panel, until draw the terrace die laminate blank panel totally drawing the die inside wall on, the shaping of elbow is drawn in the completion, the edge that prevents blank panel get into want fashioned and draw in the profile of elbow, avoid causing the edge of producing that draws the elbow to have sunken profile, effective reduce to cause draw scrapping of elbow after tensile, thereby the very big yields of drawing elbow production that improves.

Description

A kind of drawing and trimming die tool and the drawing elbow being produced using this mould

Technical field

The utility model is related to a kind of bend pipe tools mould applications, more specifically, it relates to a kind of drawing and trimming die tool And the drawing elbow using the production of this mould.

Background technology

Bend pipe tools are the pipe fittings changing pipeline direction, angularly divide and have 45 °, 90 ° and 135 ° of three kinds of the most frequently used elbows Pipe fitting, also includes the bend pipe tools of 60 ° of other improper angles of grade according further to requirement of engineering, and the mode being connected with pipe is had: Directly welding, hot-melt adhesive paste, electric smelting connection, threaded etc..

Because bend pipe tools are tubular structure, and along its curved side having certain angle, being molded by uniaxial direct tensile of axial direction Workblank sheet material, it is difficult to ensure that the uniformity of bend pipe tools tube wall, therefore, at present when producing bend pipe tools, is typically first divided by formula It is not drawn into the drawing elbow of two arc sections, then by way of welding, by two drawing elbow weldings together, shape Become the bend pipe tools of tubulose, for example, the Chinese patent of existing Publication No. cn103894444a, its production process is: first by hair Blanket material is placed between forniciform punch and forniciform die, then by punch, workblank sheet material is pressed into die Interior, workblank sheet material produces plastic deformation, makes the profile of workblank sheet material consistent with the medial side wall profiles of groove, die is curved with die It is molded the dogleg section of drawing elbow at folding, realize workblank sheet material is drawn into the purpose of the drawing elbow of arc section.

But, workblank sheet material during gradually being pushed by punch in groove and fit with the madial wall of groove, due to , all in bending, when workblank sheet material is subject to punch active force in all directions uneven, workblank sheet material is in quilt for punch and die During stretching, produce specific punch movement in the horizontal direction, after by drawing, the edge of workblank sheet material enters to be wanted workblank sheet material In the profile of drawing elbow of shaping, the edge of the drawing elbow produced is caused to have concave profile, thus can cause to stretch Scrapping of drawing elbow afterwards, greatly reduces the yields of drawing elbow.

Utility model content

In view of the shortcomings of the prior art, main purpose of the present utility model is to provide one kind that to effectively improve drawing curved The drawing and trimming die tool of head yields.

For achieving the above object, the utility model provides following technical scheme:

A kind of drawing and trimming die tool, including drawing punch and drawing die, described drawing die madial wall is provided with resigning Groove, is provided with the elastic contact part that the abutting of drawing punch can be entirely retracted in resigning groove in described resigning groove, Described elastic contact part protrudes the opening of drawing die in its natural state.

By adopting technique scheme, before stretched blank sheet material, drawing punch is located at outside drawing die, and elasticity is supported Socket part is in nature, and elastic contact part protrudes the opening of drawing die；During stretched blank sheet material, first by blank Sheet material is placed between drawing punch and drawing die, then relative the moving to drawing die direction of drawing punch, and drawing is convex During movement, workblank sheet material is gradually clamped between drawing punch and elastic contact part mould, now workblank sheet material position At the opening of drawing die, during moving in drawing punch is to drawing die, workblank sheet material is gradually bent shape Drawing punch is pressed in forniciform drawing die, thus realizing workblank sheet material be gradually shaped to drawing elbow, in blank flat During material shaping drawing elbow, workblank sheet material is pushed against with elastic contact part by drawing punch all the time, thus preventing blank flat The deflection of material, until workblank sheet material is fitted on drawing die madial wall by drawing punch completely, completes the shaping of drawing elbow, Now elastic contact part is fully located in resigning groove, to avoid the interference to drawing bend forming for the elastic contact part；In blank In the whole forming process of sheet material, workblank sheet material is clamped with elastic contact part by drawing punch all the time, it is to avoid workblank sheet material is hanging down The movement in the straight direction in drawing punch movement, prevents the edge of workblank sheet material from entering the profile of drawing elbow to be molded Interior, it is to avoid to cause the edge of the drawing elbow produced to have concave profile, effectively reduce the drawing elbow after causing to stretch Scrap, thus the yields of drawing elbow production is greatly improved, on the other hand, after drawing bend forming, due to drawing elbow meeting Produce the elasticity recovery of a part, the tube wall of drawing elbow pushes against it is possible to make drawing elbow card to the madial wall of drawing die In drawing die, and the drawing elbow after shaping can be ejected in drawing die by elastic contact part, thus need not be artificial Take out, effectively reduce the amount of labour of operating personnel, reduce the effect of operating personnel's labour cost.

Preferably, at least provided with two, described elastic contact part is located at drawing die bending place to described elastic contact part Two ends.

By adopting technique scheme, during shaping drawing elbow, workblank sheet material is in bending place for workblank sheet material Two ends all by the clamping action of drawing punch and elastic contact part, thus avoiding workblank sheet material one end to be clamped, and the other end During drawing and moulding, cause due to unbalance stress, along the deflection perpendicular to drawing die axial direction, to prevent workblank sheet material Edge enter in the profile of drawing elbow to be molded, it is to avoid cause the edge of the drawing elbow produced to have depression and take turns Exterior feature, effectively reduces scrapping, thus reaching the effect molding qualified drawing elbow, effectively of the drawing elbow after causing to stretch Improve the yields that drawing elbow produces.

Preferably, described elastic contact part includes being arranged on the spring of resigning groove bottom wall, is connected to spring away from resigning The abutting block of groove bottom wall end.

By adopting technique scheme, when workblank sheet material just by drawing punch with abut block clamping when, due to spring Elastic deformation is less, and work as drawing punch gradually by workblank sheet material be pressed into drawing die in during, the deformation of workblank sheet material Increasing, workblank sheet material needs bigger clamping force just can prevent deflection during shaping for the workblank sheet material, and spring During gradually being pressed into resigning die by drawing punch, the elastic deformation of spring is increasing, and the elastic force of spring is also got over Come bigger, spring is also increasing to the motive force abutting block, workblank sheet material is clamped in abutting block and drawing punch by firm Interior, thus effectively preventing the deflection of workblank sheet material, prevent the edge of workblank sheet material from entering the profile of drawing elbow to be molded Interior, it is to avoid to cause the edge of the drawing elbow produced to have concave profile, effectively reduce the drawing elbow after causing to stretch Scrapping, thus reaching the effect molding more qualified drawing elbow, effectively improving the yields of drawing elbow production.

Preferably, described abut block towards drawing punch side be provided with drawing punch profile coincide arc recessed Groove.

By adopting technique scheme, when workblank sheet material is during shaping, inside workblank sheet material and drawing die The part of wall laminating can be extruded and plastically deformed into by drawing punch the profile of drawing punch lateral wall, and workblank sheet material is located at The part abutting block is connected on drawing punch by arc groove madial wall, due to the profile of mutual top groove and the wheel of drawing punch Wide identical, and when abutting block is pushed in resigning groove drawing punch, spring will abut block to drawing punch direction jack-up, So that the madial wall of arc groove is seamlessly transitted with the madial wall of drawing die, thus workblank sheet material is located at the portion abutting block Dividing the profile molding drawing punch, the even tube wall of the drawing elbow of workblank sheet material shaping, there is no the convex closure of projection, thus reaching Effect to the drawing elbow molding better quality.

Preferably, described elastic contact part is elastic block rubber.

By adopting technique scheme, because workblank sheet material is metal material, and the hardness of elastic block rubber is less than The hardness of workblank sheet material, so during workblank sheet material is pressed by elastic block rubber to drawing punch surface, will not scratch Towards the side of elastic block rubber, after shaping drawing elbow, the lateral wall of drawing elbow does not have workblank sheet material workblank sheet material Scratch, thus improving the surface quality of the lateral surface of drawing elbow, reaches the effect that drawing elbow surface quality is improved in local, separately On the one hand, the coefficient of friction of elastic block rubber is larger, is become when workblank sheet material is produced motion in the horizontal direction by deformation force During gesture, the frictional force of elastic block rubber and workblank sheet material can overcome the deformation force that workblank sheet material is subject to, thus avoiding blank flat Material movement in the horizontal direction, prevents the edge of workblank sheet material from entering in the profile of drawing elbow to be molded, it is to avoid to cause The edge of the drawing elbow produced has concave profile, effectively reduces scrapping of the drawing elbow after causing to stretch, thus pole The big yields improving the production of drawing elbow.

Preferably, described drawing punch is fixedly installed and squeezes off punch, the described punch that squeezes off is perpendicular to drawing punch The lateral wall of drawing punch is protruded in the direction of movement, described drawing die madial wall protrude be provided with can with squeeze off punch lateral wall Laminating squeezes off concave template with cut off workblank sheet material.

By adopting technique scheme, after workblank sheet material is become drawing elbow by drawing, the edge of drawing elbow is often Can have a surplus side, i.e. waste material on drawing elbow profile, when squeezing off punch with the relative close drawing die of drawing punch, Squeeze off punch and also squeeze off concave template constantly close, during drawing punch progresses in drawing die, blank flat Material is gradually become drawing elbow by drawing, when workblank sheet material is pressed in the Internal periphery of drawing die drawing punch, now draws Prolong bend forming, and squeeze off punch and fit with the side wall squeezing off concave template, the lateral wall squeezing off punch and the side squeezing off concave template The remaining side of drawing elbow is cut away, thus during reaching one-shot forming, being both molded drawing curved during relatively sliding by wall Head, and the remaining side of drawing elbow is pruned away, reduce the pruning of artificial pruning or other operations, thus reduce pruning again Drawing elbow more than side expense, be finally reached reduce produce drawing elbow cost.

Preferably, described drawing punch is provided with joint face near the lateral wall squeezing off convex template one end, described joint face Bearing of trend consistent with the drawing punch direction of motion, described joint face and squeeze off between concave template be molded drawing elbow side Edge.

By adopting technique scheme, drawing elbow can produce small elastic deformation, drawing during shaping After elbow takes out, drawing elbow produces small elasticity recovery, leads to the profile actual size of drawing elbow to reduce, and joint face And squeeze off the gap between concave template to be used for being molded the profile of drawing elbow, and this profile can extend downwardly and squeeze off punch, with company The drawing elbow overall size of junction laminating is institute's pre-set dimension, by joint face and the vertical plane that squeezes off between concave template shaping Away from drawing elbow edge part can produce elasticity recovery, and this vertical plane near the edge of drawing elbow only in vertical direction Produce elasticity to recover, its size constancy in the horizontal direction, thus reaching the effect ensureing drawing elbow overall size, raising is drawn Prolong the production precision of elbow.

Preferably, described drawing punch is provided with locating slot with squeezing off the side that punch fits, and described squeezing off sets on punch It is equipped with consistent with locating slot medial side wall profiles and corresponding with locating slot location hole, arrange between described location hole and locating slot Have simultaneously with location hole and locating slot inlay card to prevent drawing punch relative to squeezing off the locating piece that punch moves.

By adopting technique scheme, because drawing punch is contacted with workblank sheet material early than squeezing off punch, and drawing is convex Mould and drawing die in the horizontal direction all in bending, during drawing punch extrusion blank plate forming, drawing punch Uneven in the horizontal direction by the reaction force of workblank sheet material, lead to drawing punch to move relative to squeezing off punch, and locating piece Can inlay card in location hole and locating slot, when drawing punch is intended to produce and relatively squeezes off trend that punch moves, position simultaneously Block is offseted with the madial wall of locating slot, thus avoiding drawing punch and the relative movement squeezing off punch, prevents the outer of drawing punch Side wall with squeeze off that the distance between concave template is uneven, prevent the squeezed disconnected concave template side wall transition in certain side of drawing elbow profile Extruding, it is to avoid lead to the edge of drawing elbow uneven, thus it is conforming to reach pipe thickness at raising drawing elbow profile Effect.

Secondary objective of the present utility model is to provide a kind of drawing elbow effectively preventing overall size retraction.

A kind of drawing elbow, including the drawing elbow body being made up of above-mentioned drawing and trimming die tool.

By adopting technique scheme, using above-mentioned drawing and trimming die tool, can effectively keep drawing elbow body Overall size precision.

Preferably, described drawing elbow body edges are integrally formed with connection side, described connection side and drawing elbow body Tangent setting.

By adopting technique scheme, by joint face and squeeze off and extrude the connection side being formed between concave template, can make In docking, the contour edge of its drawing elbow has connection side bonded to each other to two relative drawing elbows, it is to avoid only right Connect and produce weld keyhole after leading to welding, thus reaching welding effect well so that the bend pipe tools tool of the tubulose being welded There are better seal and leakproof aqueous.

In sum, the utility model has the advantages that

1st, during workblank sheet material shaping drawing elbow, workblank sheet material is supported with elastic contact part by drawing punch all the time Tightly, the learies of the drawing elbow after causing to stretch thus preventing the deflection of workblank sheet material, are effectively reduced, thus be greatly improved drawing Prolong the yields of elbow production；

2nd, by the remaining side of drawing elbow during the lateral wall squeezing off punch slip relative with the side wall squeezing off concave template Cut away, thus during reaching one-shot forming, being both molded drawing elbow, and the remaining side of drawing elbow has been pruned away, thus reaching The expense on side more than the drawing elbow pruned again to reduction, is finally reached and reduces the cost producing drawing elbow；

3rd, pass through the setting of locating slot, location hole and locating piece, be prevented from drawing punch and the relative shifting squeezing off punch Dynamic.

Brief description

Fig. 1 be embodiment one from upper bolster perspective structure schematic diagram straight down；

Fig. 2 is the sectional view along a-a section for the Fig. 1；

Fig. 3 is the enlarged drawing of a part in Fig. 2；

Fig. 4 is the sectional view along b-b section for the Fig. 1；

Fig. 5 is the structural representation of drawing punch in embodiment one；

Fig. 6 is the structural representation abutting block in embodiment one；

Fig. 7 is the structural representation of embodiment two；

Fig. 8 is the structural representation of embodiment three.

In figure: 1, part of the upper die；11st, upper bolster；12nd, drawing concave template；121st, drawing die；122nd, resigning groove；13、 Squeeze off concave template；131st, squeeze off die；2nd, part of the lower die；21st, die shoe；22nd, punch mounting seat；23rd, drawing punch；231st, even Junction；232nd, locating slot；24th, squeeze off punch；241st, location hole；3rd, elastic contact part；31st, spring；32nd, abut block；321st, arc Connected in star；33rd, elastic block rubber；4th, locating piece；5th, drawing elbow body；51st, connect side；6th, guide pillar；61st, compression spring；62、 Guide pin bushing；7th, stock supporting plate；71st, put hopper；8th, holding pad.

Specific embodiment

Below in conjunction with the accompanying drawings and embodiment, the utility model is described in detail.

Embodiment one:

A kind of drawing and trimming die tool, sees figures.1.and.2, it includes part of the upper die 1 and part of the lower die 2, is using process In, the part of the lower die 2 of this mould is fixed in the workbench (not shown) of forcing press (not shown), and part of the upper die 1 is used for being fixed on the slide block (not shown) of forcing press, and in the course of the work, slide block drives part of the upper die 1 past to forcing press Multiple moves up and down.

With reference to Fig. 1, Fig. 2 and Fig. 4, part of the upper die 1 includes upper bolster 11, and upper bolster 11 is fixing with the slide block of forcing press even Connect, below the diagram of upper bolster 11, be fixedly installed drawing concave template 12, drawing concave template 12 sets towards the side of diagram lower section It is equipped with forniciform drawing die 121, drawing die 121 is symmetrical arranged along knee, the section of drawing die 121 is semicircle shape Structure, drawing die 121 madial wall has been arranged in pairs several resigning grooves 122, and resigning groove 122 is all with regard to drawing die 121 bending place is symmetrical arranged, and has preferably been arranged in pairs two resigning grooves 122 here, and two resigning grooves 122 are located at respectively The two ends of drawing die 121, are provided with elastic contact part 3 in resigning groove 122, elastic contact part 3 includes spring 31 and abuts Block 32, spring 31 can be compression spring, air spring and nitrogen spring, preferred compressed spring here, one end of compression spring It is fixedly connected with the diapire of resigning groove 122, the other end is fixedly connected with abutting block 32, with reference to Fig. 6, abut block 32 towards lower mould The side of part 2 is provided with arc groove 321, and this arc groove 321 and the madial wall of drawing die 121 seamlessly transit, arc Groove 321 madial wall is collectively forming bending semi-circular recesses with the madial wall of drawing die 121, in order that abut block 32 can Stable slides up and down, compression spring abut block 32 length direction on be provided with two or more, here we preferably two Individual compression spring, compression spring in its natural state, protrude outside Extruding die by the diagram lower end abutting block 32, and by compression spring After compression, abutting block 32 can be completely in resigning groove 122.

With reference to Fig. 4, drawing concave template 12 arranges fluted, the side of this groove and drawing towards the side of part of the lower die 2 Die 121 communicates, and this groove is arranged one week along the profile of drawing die 121, is fixedly installed and squeezes off concave template 13 in this groove, Squeeze off concave template 13 and protrude the setting of drawing die 121 madial wall, squeezing off the endoporus communicating with drawing die 121 on concave template 13 is Squeeze off die 131.

With reference to Fig. 2, Fig. 4 and Fig. 5, part of the lower die 2 includes die shoe 21, punch mounting seat 22, is fixed on punch mounting seat Squeezing off punch 24 and being fixed on the drawing punch 23 squeezing off on punch 24 on 22, the workbench of die shoe 21 and forcing press is fixed Connect, drawing punch 23 coincide towards the end of drawing die 121 and the Internal periphery of drawing die 121, in order to prevent drawing convex Mould 23 slip in the horizontal direction, punch mounting seat 22 is provided with the groove of waist type structure, and this groove is to squeezing off punch 24 He Drawing punch 23 direction extends, and squeezes off the location hole 241 that the through hole on punch 24 is waist type structure, the waist on drawing punch 23 Type blind hole is locating slot 232, and locating slot 232 is embedded with the locating piece 4 of waist type structure, and locating piece 4 extends downwardly, and simultaneously with fixed Die madial wall interference fit on position hole 241 and punch mounting seat 22；The lateral wall squeezing off punch 24 protrudes drawing punch 23 Lateral wall, the lateral wall squeezing off punch 24 is consistent with the medial side wall profiles squeezing off die 131, when squeeze off punch 24 with squeeze off recessed Template 13, relatively when vertical direction moves, squeezes off the lateral wall of punch 24 and squeeze off can be by hair between die 131 madial wall Blanket material cuts off.

With reference to Fig. 4, for the accuracy of part of the upper die 1 and part of the lower die 2 relative motion, at four angles of die shoe 21 It is provided with guide pillar 6, be provided with guide pin bushing 62 at four angles of upper bolster 11, guide pillar 6 is all socketed with compression spring 61, Meanwhile, on guide pillar 6, sliding is provided with stock supporting plate 7, and stock supporting plate 7 is located at the top of compression spring 61, and compression spring 61 is natural Under state, stock supporting plate 7 be located at drawing punch 23 top, stock supporting plate 7 is provided with profile be slightly larger than squeeze off punch 24 profile Via, so that stock supporting plate 7 vertically can slide on guide pillar 6, is provided with profile in the upper side of stock supporting plate 7 and is slightly larger than Workblank sheet material profile put hopper 71, workblank sheet material is first placed on and puts in hopper 71 by workblank sheet material before the punching, is squeezing off Holding pad 8 is fixedly installed on concave template 13, the middle part of holding pad 8 is provided through profile and is more than the through hole squeezing off punch 24, The outline of holding pad 8 slightly smaller than puts the Internal periphery of hopper 71, and when part of the upper die 1 moves downward, holding pad 8 can will put material Workblank sheet material compression in groove 71.

With reference to Fig. 2 and Fig. 3, the lateral wall in the diagram lower end of drawing punch 23 is provided with vertical joint face 231, connects Face 231 is tangent with the curved profile of drawing punch 23, and joint face 231 is 3cm-6cm in the length of vertical direction, here preferably 4mm, squeezes off and will be squeezed into the connection side of drawing elbow at the profile of drawing elbow between punch 24 madial wall and joint face 231 51, connect side 51 tangent with the curved profile of drawing elbow.

The course of work: with reference to Fig. 2 and Fig. 4, when needing to be molded drawing elbow, workblank sheet material is placed on puts hopper first In 71, then slide block drives part of the upper die 1 to move downward, and part of the upper die 1, in downward motion process, abuts block 32 and first can Run into workblank sheet material, part of the upper die 1 continues to move downward, compression spring produces a part of elastic compression so that holding pad 8 with Abut block 32 to be pressed against workblank sheet material on the diapire putting hopper 71, holding pad 8 continues to move downward, and stock supporting plate 7 is downward simultaneously Motion, compression spring 61 compresses, and drawing punch 23 stock supporting plate 7 relatively moves upwards.

With reference to Fig. 2 and Fig. 4 when drawing punch 23 runs into workblank sheet material, the edge contour of workblank sheet material is set to hopper 71 bottom Clamp between wall and holding pad 8, the middle part of workblank sheet material clamped with abutting block 32 by drawing punch 23, part of the upper die 1 continue to Lower motion, stock supporting plate 7 is continued to press down on by holding pad 8, and the deflection of compression spring 61 is increasing, thus clamping blank flat The power of material profile is increasing, it is to avoid during brake forming, buckling phenomena to workblank sheet material in the edge of workblank sheet material； The middle part of workblank sheet material is gradually pressed into by drawing punch 23 on the madial wall of drawing die 121, in this process, blank flat Material is abutted block 32 all the time and is clamped with drawing punch 23, thus avoiding workblank sheet material movement in the horizontal direction.

Continue to move downward with reference to Fig. 2, Fig. 3 and Fig. 4 part of the upper die 1, when squeezing off punch 24 relative movement to squeezing off die When at 131 madial walls, the edge of workblank sheet material is cut off, and the part cut away is referred to as waste material, this waste material still by holding pad 8 with hold Flitch 7 clamps, and squeezes off the gap between the madial wall of die 131 and joint face 231 and has been molded vertical connection on drawing elbow Side 51, during an above-mentioned punching press, workblank sheet material has been molded drawing elbow, and has been molded the connection side of drawing elbow 51, and the waste material of workblank sheet material is excised in the lump, avoid during drawing workblank sheet material, workblank sheet material is in water simultaneously Square to movement.

With reference to Fig. 2 and Fig. 4, after shaping drawing elbow, slide block drives part of the upper die 1 to move upwards, drawing punch 23 with draw Prolong die 121 madial wall to separate, and now, the drawing elbow being just extruded together can produce elasticity recovery somewhat, drawing is curved The tube wall of head is expanded it is possible to drawing elbow is stuck in drawing die 121 to the madial wall of drawing die 121, and compression spring Producing elasticity to recover to promote abutting block 32 to move downward, drawing elbow being connected on drawing punch 23, thus avoiding drawing curved Head is taken to top and drops, it is to avoid the damage of drawing elbow；Meanwhile, holding pad 8 constantly moves upwards, and compression spring 61 promotes Stock supporting plate 7 moves upwards, until holding pad 8 departs from stock supporting plate 7, thus waste material is in putting in hopper 71, the drawing after shaping is curved Head is on drawing punch 23, realizes the shaping of whole drawing elbow, and drawing elbow and waste material are taken out；Repeat above-mentioned action, Carry out the shaping of large batch of drawing elbow.

Embodiment two:

A kind of drawing and trimming die tool, with reference to Fig. 7, the present embodiment is with the difference of embodiment one: the bullet in the present embodiment Property abutting part 3 be elastic block rubber 33, the material of elastic block rubber 33 can be Heveatex, natural rubber and butyl rubber, Here preferred butyl rubber, the profile of the side towards part of the lower die 2 for the elastic block rubber 33 with abut block 32 court in embodiment one Identical to the profile of drawing punch 23, and elastic block rubber 33, after being under pressure, can be pressed against resigning groove 122 completely Interior, the hardness of elastic block rubber 33 is less than the hardness of workblank sheet material, thus in elastic block rubber 33, workblank sheet material is convex to drawing Mould 23 surface pressing during, will not scratch workblank sheet material towards elastic block rubber 33 side, its substantially the course of work with Embodiment one is identical.

Embodiment three:

A kind of drawing elbow, with reference to Fig. 3 and Fig. 8, it includes forniciform drawing elbow body 5, drawing elbow body 5 by Above-mentioned drawing and trimming die has a drawing and moulding, the section substantially semicircular in shape structure of drawing elbow, joint face 231 with squeeze off die Gap between 131 has been molded the connection side 51 of drawing elbow, and connection side 51 is tangent with the bending tube wall of drawing elbow, works as needs When two relative drawing elbow bodies 5 are welded into bend pipe tools, the connection side 51 of two drawing elbows are docked, makes drawing The connection side 51 of the both sides of elbow is bonded to each other, then the connection side 51 of mutual portable box is welded, and two are connected side 51 Between uniformly, the bend pipe tools reaching welding have good sealing and leakproof is aqueous.

The above is only preferred embodiment of the present utility model, and protection domain of the present utility model is not limited merely to Above-described embodiment, all technical schemes belonging under the utility model thinking belong to protection domain of the present utility model.Should refer to Go out, for those skilled in the art, some improvement under the premise of without departing from the utility model principle and Retouching, these improvements and modifications also should be regarded as protection domain of the present utility model.

Claims (10)

1. a kind of drawing and trimming die tool, including drawing punch (23) and drawing die (121), is characterized in that: described drawing die (121) madial wall is provided with resigning groove (122), is provided with supporting of drawing punch (23) in described resigning groove (122) Connect the elastic contact part (3) being entirely retracted in resigning groove (122), described elastic contact part (3) is protruded in its natural state The opening of drawing die (121).

2. drawing and trimming die according to claim 1 tool, is characterized in that: described elastic contact part (3) is at least provided with two Individual, described elastic contact part (3) is located at the two ends of drawing die (121) bending place.

3. drawing and trimming die tool according to claim 1, is characterized in that: described elastic contact part (3) includes being arranged on allowing Position groove (122) diapire spring (31), be connected to the abutting block away from resigning groove (122) diapire end for the spring (31) (32).

4. drawing and trimming die according to claim 3 tool, is characterized in that: described abutting block (32) is towards drawing punch (23) Side be provided with drawing punch (23) profile coincide arc groove (321).

5. drawing and trimming die tool according to claim 1, is characterized in that: described elastic contact part (3) is elastic block rubber (33).

6. drawing and trimming die tool according to claim 1, is characterized in that: be fixedly installed crowded on described drawing punch (23) Disconnected punch (24), the described punch (24) that squeezes off is protruding the outer of drawing punch (23) perpendicular to the direction of drawing punch (23) movement Side wall, described drawing die (121) madial wall protrudes and is provided with and can fit to cut off blank flat with squeezing off punch (24) lateral wall Material squeeze off concave template (13).

7. drawing and trimming die tool according to claim 6, is characterized in that: described drawing punch (23) is close to squeeze off convex template (13) lateral wall of one end is provided with joint face (231), and the bearing of trend of described joint face (231) is moved with drawing punch (23) Direction is consistent, described joint face (231) and squeeze off the edge being molded drawing elbow between concave template (13).

8. drawing and trimming die according to claim 6 tool, is characterized in that: described drawing punch (23) with squeeze off punch (24) The side of laminating is provided with locating slot (232), and described squeezing off is provided with punch (24) and locating slot (232) medial side wall profiles one Cause and the location hole (241) corresponding with locating slot (232), be provided with same between described location hole (241) and locating slot (232) When with location hole (241) and locating slot (232) inlay card to prevent drawing punch (23) relative to squeezing off the positioning that punch (24) moves Block (4).

9. a kind of drawing elbow, is characterized in that: includes being made up of the arbitrary described drawing and trimming die tool of the claims 1-8 Drawing elbow body (5).

10. drawing elbow according to claim 9, is characterized in that: described drawing elbow body (5) edge integrally formed with Connect side (51), described connection side (51) and the tangent setting of drawing elbow body (5).