CN207642142U - A kind of mold of pipe end convex closure molding and fine synchronous processing - Google Patents

Abstract

The utility model provides a kind of mold of pipe end convex closure molding and fine synchronous processing, including：Anti- drawing material punch and fine blanking die, fine blanking die are mounted on the anti-dead astern drawn and expect punch, and the fine blanking die includes upper die holder, lower die holder, caliber mould, tail plunger tip stick, standard guide post and positioning baffle.This pipe end convex closure is molded and the mold of fine synchronous processing is when pipe fitting is processed, expect that punch follows equipment level to be close to the movement of caliber mould direction by anti-drawing, after the completion of predetermined stroke, just it is bonded with caliber mould end face is added, and the convex closure shape of pipe fitting expects the outside expansion shape forming in punch end in anti-drawing at this time, and pipe fitting is made to be processed into and the anti-shape for drawing material punch cavity through-hole consistent, the indentation fine end of pipe fitting is then pipe fitting bulging in caliber mould, its final outer diameter bulging is extremely consistent with the size of caliber mould endoporus, final to ensure pipe fitting tolerance within claimed range.

Description

A kind of mold of pipe end convex closure molding and fine synchronous processing

Technical field

The present invention relates to auto parts and components processing technique fields, and in particular to a kind of pipe end convex closure molding is synchronous with fine to be added The mold of work.

Background technology

In automobile engine mechanism, for realize it is many ventilate, logical oil, draining, the functions such as exhaust, it is many to design peace Filling some straight tubes makes engine and extraneous interconnection, and often design tolerance band is up to the pipe fitting indentation end of 0.009mm and starts The interference seal cooperation of machine casting hole.The other end of pipe is designed to convex closure shape shape simultaneously, be mainly oriented to assembly sebific duct and with Sebific duct forms sealing effect, also sebific duct is avoided to fall off and leak.This existing processing technology of pipe is all examined Consider molding one end boss, then finishing is recycled to ensure that other end ensures its precision.Have and is notably gone using machining Meet the required precision at indentation casting end.These cooked modes no doubt ensure that the quality of product, but inefficiency；Manually, Equipment, die cost are high.Nowadays developing swift and violent society, such cooked mode affects the development of company or by gradually quilt Eliminate, be badly in need of it is a kind of it is efficient, at low cost under processing method improve this kind of traditional mode.

In addition the convex closure in automobile pipe fitting is essentially all to assemble too deep with limit sebific duct and prevent sebific duct due to external force The effect of falling off.There are also be effect for fixed seal ring position.In prior art, when processing pipe fitting convex closure, After often there is molding, pipe fitting will appear as punch die moves together, leads to that processing need to be debugged again, leads to inefficiency, have Pipe fitting is notably broken, product is directly destroyed.Although also it is bad to be reduced both the above by someone for the diminution caliber margin of tolerance, The material cost of product is increased, root problem can not be still solved.

Publication No.：The Chinese patent application of CN102806264A discloses a kind of two-way fine blanking die and two-way fine pipe Part processing method, in the patent application：Two-way fine blanking die includes upper die and lower die, and it includes punch-pin that upper and lower mould, which all uses cavity plate, Structure type, the upper mold includes upper male mould, upper cavity die, and lower die includes lower punch, lower cavity die；The upper male mould is mounted on upper In concave die cavity, upper cavity die is mounted on upper die holder, and lower punch is mounted in recessed model cavity, and lower cavity die passes through die block It is fixed on lower die holder, upper male mould, lower punch are slided by the pressure that fine blanking press transmits in cavity plate, and upper cavity die passes through upper Die-pin couples with fine blanking press, and upper male mould is coupled by upper male mould mandril with fine blanking press；Lower punch is convex under Mould mandril couples with fine blanking press, and jacking block is equipped between lower punch mandril and fine blanking press.Pass through the two-way fine blanking die The fine part product punching shear surface of acquisition is high-quality, and entire bright band, shear surface roughness Ra can reach 0.3~0.5, hairless Thorn, small angle of collapsing pipe fitting can be directly used for Automatic manual transmission, save subsequent processing operations, production efficiency made to greatly improve, improve Economic benefit.But still exist in the patent application：The pipe fitting precision processed is inadequate, and in processing pipe fitting convex closure When, the phenomenon that there is the phenomenon that molding rear tubular member can together be moved with punch die, convex closure fracture even will appear when serious.

Invention content

In view of the deficiencies of the prior art, the present invention propose it is a kind of it is simple in structure, easy to operate, precision is high, it is efficient and The synchronous processing mold of stability high automobile straight tube pipe end molding convex closure and fine, it is ensured that the tolerance that pipe fitting processes Within the scope of permissible accuracy.

The present invention realizes the present invention, a kind of mold of pipe end convex closure molding and fine synchronous processing, packet using following scheme It includes：Anti- drawing material punch and fine blanking die, fine blanking die are mounted on the anti-dead astern drawn and expect punch；The fine blanking die includes upper mold Seat, lower die holder, caliber mould, tail plunger tip stick, standard guide post and positioning baffle, the lower die holder is on the positioning seat of equipment, mark Quasi- guide post setting is provided with the guide pillar hole to match with standard guide post, the guide pillar hole edge of upper die holder on lower die holder, on upper die holder It the standard guide post being fixed on lower die holder to be assembled, being inserted in lower die holder above upper die holder by two screws is locked Tightly, caliber die sleeve is connected between lower die holder and upper die holder, and square groove, positioning baffle are both provided on the upper die holder and lower die holder The square groove of the first half and lower die holder carries out both ends with merga pass screw and fixes locking, and the lower half of positioning baffle is fastened on In the square groove of die holder, the center of the positioning baffle offers interstitial hole, and positioning is from left to right run through in one end of tail plunger tip stick The interstitial hole of baffle, and the middle part end face of tail plunger tip stick is necessarily located at positioning baffle close to the side of caliber mould, tail plunger tip stick Front end then stretch to the middle part of caliber mould, the axle center of the tail plunger tip stick is located at same with the anti-plug axle center drawn in material punch On horizontal plane.

Preferably, the anti-drawing material punch includes location mandril, material returned rubber, screw, die sleeve, plug and alloy punching Head is provided with annular groove in the middle part of the location mandril, and the design of material returned rubber circularizes, and the material returned rubber passes through interference fit Mode be socketed in the annular groove of location mandril, die sleeve is sleeved on location mandril by clearance fit and end face is close to Together in material returned rubber, the front end face of plug is close to the tail end face of location mandril, tail of the alloy punch welding in die sleeve Portion, the alloy punch are provided centrally with the cavity through-hole consistent with formation of tubes convex closure, the anti-front end for drawing material punch It is screwed in equipment, the anti-tail end for drawing material punch is opposite with pipe fitting convex closure by cavity through-hole, the die sleeve Side wall on open up there are two symmetrically arranged notch, it is fixed that die sleeve is locked at by screw after the notch in die sleeve On the plug of position, also set up on the lateral wall of the die sleeve there are two symmetrical mistake proofing through-hole.

Preferably, the head of the location mandril processes one 90 ° of inclined-plane, and annular is provided in the middle part of location mandril Slot, the annular groove depth is shorter 5mm than material returned rubber, and location mandril tail end face is provided centrally with through location mandril axle center Through-hole, the design of material returned rubber circularize, and the material returned rubber size is identical as the annular groove in the middle part of location mandril, is with 0.2mm Interference volume be sleeved in the annular groove of location mandril, wherein head process 90 ° of inclined-planes, be mainly locked with screw end face In equipment, middle part annular groove is mainly used to fix material returned rubber, and size and material returned rubber are almost the same, and outer diameter can compare The small 0.2mm of material returned rubber is mainly enabled and is formed interference fit between material returned rubber and location mandril, and the tail portion of location mandril mainly allows The front end face of plug is closely fitted therewith, it is ensured that and plug axle center and positioning axle center are coaxial, and position the mandrel axis heart and be machined with through-hole, Purpose utilizes screw locking plug.

In the above-mentioned technical solutions, the anti-Front-end Design for drawing material punch is fixed in such a way that screw is stuck in equipment, anti-drawing The rear end of material punch is then designed to the cavity through-hole consistent with pipe fitting convex closure shape, and when pipe fitting process, anti-drawing expects that punch can be with It equipment level and is close to the movement of caliber mould direction, after the completion of predetermined stroke, be just bonded with caliber mould end face is added, and manage at this time The convex closure shape of part expects the outside expansion shape forming in punch end in anti-drawing, and it is consistent with anti-drawing material punch cavity through-hole so that pipe fitting is processed into The indentation fine end of shape, pipe fitting is then pipe fitting bulging in caliber mould, its final outer diameter bulging to caliber mould endoporus Size it is consistent, it is final to ensure pipe fitting tolerance within the scope of 0.009mm, it is ensured that the assembling and leakproofness of pipe fitting.Simultaneously For pipe fitting when carrying out convex closure processing, material returned rubber is by free state compressive deformation, and at the same time, material can be in alloy punch cavity The interior convex closure for forming the same shape therewith.When the decrement of material returned rubber is just 5mm, convex closure completes processing, and the material returned The decrement of rubber should not be too large, and no it will cause the return of material returned rubber difficulties, and increase the production cost of material returned rubber, The decrement of material returned rubber is also unsuitable too small simultaneously, does not otherwise have cushioning effect so that pipe fitting is in punching course by broken It is bad, it finds in practical operation, when the decrement of material returned rubber is just 5mm, can just delay at this time meeting punched pipefitting Under the action of punching, the suitable fast return of material returned rubber is realized；And at this time, there are a clamping forces between material and plug, if not having at this time With the presence of the elastic force of material returned rubber, pipe fitting can return to original state together with alloy punch, plug etc., can lead to pipe fitting at this time It pulls or can not take out by hand in surface；When there are material returned rubber, original state process is returned in alloy punch, plug etc. In, rubber imposes elastic force to alloy punch first, and to make alloy punch stop at machining state, and location mandril can be with core Stick returns to original state.When rubber material returned glue restore original state when, at this time pipe fitting endoporus can with plug relative displacement 5mm, and this When just make the circular arc portion clearance fit of pipe fitting inner wall and plug, therefore no longer there is clamping force, to make pipe fitting molding It is not destroyed in the process.

Preferably, one end of remotely located plug is arranged to arc-shaped on the plug so that it is smooth to be oriented to inner hole of pipe It is inserted in plug, threaded hole there are one one end settings of location mandril is close on the plug, using screw by running through locating core Stick makes plug be fixed on the end face of location mandril tail portion with locking mode, it is ensured that plug is coaxial with location mandril, to make core Stick and equipment positioning axle center are coaxial, then and so that material axle center and equipment is positioned axle center is consistent, it is final improve product process it is steady It is qualitative.

Preferably, the caliber mould is designed to hollow " T " font, the caliber mould include " T " font head front end face, Screw hole, " T " font head rear end face, " T " font tail portion cylindrical surface and " T " font tail end end face, wherein " T " font head Front end face is opposite with the anti-drawing material tail portion of punch, is the molding closure end face of anti-drawing material punch, the installation of " T " font tail portion cylindrical surface Between upper die holder and lower die holder, the font head " T " rear end face is adjacent to upper die holder and lower die holder, and by screw hole to upper die holder It is locked with lower die holder；" T " font tail end end face is after the pipe fitting material returned, for being limited to tail plunger tip stick.

Preferably, the tail plunger tip stick is designed to that " ten " shape, the tail plunger tip stick include top bump diametral plane, top End face, plug cylinder, middle part end face, middle part positioning surface, lower cylindrical face and tail end face, wherein top bump diametral plane are used for Prevent pipe fitting endoporus aperture from becoming smaller, top end surface mainly provides pipe fitting lateral extrusion molding support force, and the terminal of final power It is that the positioning surface in the middle part of " ten " shape is leaned on to be transferred to above positioning baffle, plug cylinder is matched with the axis hole of caliber mould, middle part End face is set as cascaded surface, and tail plunger tip stick is can avoid in the material returned and is fallen, and the lower cylindrical face of tail plunger tip stick is from positioning baffle The left side is run through to the right, it is possible to provide a free horizontal impulse stroke movable to the right of energy, tail end face is after pipe fitting processing, meeting It is bonded and is pushed with it using oil cylinder.

Preferably, the positioning baffle is designed to " rectangle " shape with holes, the lower half of " rectangle " positioning baffle with The square groove of lower die holder coordinates, and reuses screw and carries out both ends fixation locking, the first half of " rectangle " positioning baffle is fastened on In the square groove of upper die holder, interstitial hole and the tail plunger tip stick of positioning baffle are oppositely arranged, for being oriented to tail plunger tip stick.

Preferably, the material returned rubber uses polyurethane material, and the thickness of material returned rubber is 8mm, length 15mm.The material returned Rubber is fixed in location mandril annular groove, and material is polyurethane, and polyurethane material is with high intensity, tear-proof, wearability High elastic material, can effectively extend the service life of material returned rubber, and the thickness of material returned rubber is 8mm, length 15mm, this Sample just can ensure that decrement in 5mm, and after pipe fitting completes processing, alloy punch will not return to initial shape with location mandril at once State realizes that function is expected in anti-drawing.

Preferably, the alloy punch is process using high strength steel YG6 materials, and the caliber mould uses YG6/8 high Intensity steel material is process.The characteristics of strength steel YG6 materials and YG6/8 materials all have high-wearing feature, high intensity, therefore it makes It is also high with the service life, to processing the excellent stability of pipe fitting.

A kind of advantageous effect of the mold of pipe end convex closure molding and fine synchronous processing provided by the invention is：

1) mold of the molding of this pipe end convex closure and fine synchronous processing is expected that punch follows by anti-drawing and is set when pipe fitting is processed Standby level is close to the movement of caliber mould direction, after the completion of predetermined stroke, be just bonded with caliber mould end face is added, and pipe fitting at this time Convex closure shape anti-drawing expect the outside expansion shape forming in punch end, and make pipe fitting be processed into it is anti-draw material punch cavity through-hole it is consistent outside Shape.The indentation fine end of pipe fitting is then pipe fitting bulging in caliber mould, its final outer diameter bulging to caliber mould endoporus Size is consistent, final to ensure pipe fitting tolerance within the scope of 0.009mm, it is ensured that the assembling and leakproofness of pipe fitting；

2) state change that the mold of the molding of this pipe end convex closure and fine synchronous processing passes through material returned rubber so that work as the material returned When the decrement of rubber is just 5mm, convex closure completes processing, during alloy punch, plug etc. return to original state, the material returned Rubber imposes elastic force to alloy punch first, and to make alloy punch stop at machining state, and location mandril can be with plug Original state is returned to, when rubber material returned glue restores original state, pipe fitting endoporus can be with plug relative displacement 5mm, and at this time at this time Just make the circular arc portion clearance fit of pipe fitting inner wall and plug, therefore no longer there is clamping force, to make pipe fitting in molding mistake It is not destroyed in journey, the phenomenon that pipe fitting moves together with punch die when processing pipe fitting convex closure can be effectively prevent, it is anti-to realize Draw material function.

Description of the drawings

Fig. 1 is the Standard figure of invention.

Fig. 2 is the structure sectional view of the present invention.

Fig. 3 is the anti-dimensional structure diagram for drawing material punch in the present invention.

Fig. 4 is the dimensional structure diagram of location mandril in the present invention.

Fig. 5 is the structural schematic diagram of caliber mould in the present invention.

Fig. 6 is the dimensional structure diagram of tail plunger tip stick in the present invention.

In figure：1, punch is expected in anti-drawing；11, location mandril；12, material returned rubber；13, screw；14, die sleeve；15, core Stick；16, alloy punch；111, inclined-plane；112, annular groove；113, end face；114, through-hole；141, notch；142, mistake proofing through-hole；2、 Fine blanking die；21, upper die holder；22, lower die holder；23, caliber mould；24, tail plunger tip stick；25, standard guide post；26, positioning baffle； 231, central shaft hole；232, " T " font head front end face；233, screw hole；234, " T " font head rear end face；235, " T " word Type tail portion cylindrical surface；236, " T " font tail end end face；241, top bump diametral plane；242, top end surface；243, plug column Body；244, middle part end face；245, middle part positioning surface；246, lower cylindrical face；247, tail end face.

Specific implementation mode

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Whole description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Ability The every other embodiment that domain ordinary person is obtained without making creative work belongs to the protection of the present invention Range.

Embodiment：A kind of mold of pipe end convex closure molding and fine synchronous processing.

Shown in Fig. 6, punch 1 is expected in a kind of mold of pipe end convex closure molding and fine synchronous processing, including anti-drawing With fine blanking die 2, fine blanking die 2 is mounted on the anti-dead astern drawn and expect punch 1；

Wherein anti-drawing expects that punch 1 includes：Location mandril 11, material returned rubber 12, screw 13, die sleeve 14,15 and of plug Alloy punch 16, wherein material returned rubber 12 are designed as annular, and effect is the active force for making to act on 14 positioning surface of die sleeve It evenly distributes, then ensures stability of the die sleeve 14 by impact force action when, the size and locating core of material returned rubber 12 The annular groove 112 at 11 middle part of stick is identical, is to be sleeved in the annular groove 112 of location mandril 11 with the interference volume of 0.2mm so that the material returned Rubber 12 can be fastened in annular groove 112 stability for then ensureing processing without falling off；12 material of material returned rubber is poly- ammonia Ester, such material have the characteristics that high intensity, tear-proof, wearability are high, can effectively extend the service life of material returned rubber 12, The length of material returned rubber 12 is 15mm, and height is higher by 5mm, and material returned rubber than the depth of 11 intermediate annular groove 112 of location mandril 12 thickness need to ensure that as 8mm, this can just make location mandril 11, and normally rebound returns to original state, and the output pressure of another equipment needs Up to 8MPa or more, this just can ensure that the power of output is more than the sum of the power of material molding convex closure and 12 elastic force of material returned rubber, it is ensured that production Quality, location mandril 11 are designed to that " umbrella " shape, head process 90 ° of inclined-planes 111, be mainly locked with screw end face In equipment, the annular groove 112 at middle part is mainly used to fix material returned rubber 12, and tail end face 113 mainly allows the front end of plug 15 Face is closely fitted therewith, it is ensured that and 15 axle center of plug and 11 axle center of location mandril are coaxial, and through-hole is processed into 11 axle center of location mandril, Destination party just utilizes screw locking plug 15, die sleeve 14 to be sleeved on location mandril 11 with the clearance fit of 0.02mm, end face It is close to together in material returned rubber 12, opens up that there are two symmetrically arranged notches 141 on the side wall of the die sleeve 14, it is therefore an objective to energy It allows screw 13 through die sleeve 14 and die sleeve 14 is locked on location mandril 11, to make screw 13 that there is limitation to rush The effect of 14 axial direction stroke of die sleeve cylinder, prevents die sleeve 14 from falling off；14 outside of die sleeve also retains two and symmetrically sets The mistake proofing through-hole 142 set mainly avoids because of accidentalia, material returned rubber 12, die sleeve 14 and punch die plug 11 3 There is vacuum effect after being closed in person, and the elastic force for causing rubber not enough makes die sleeve 14 return to original state, plays anti- Mistake effect；Alloy punch 16 uses high strength steel YG6, has the characteristics that high-wearing feature, high intensity, therefore its service life also pole Height, to processing the excellent stability of pipe fitting, alloy punch 16 makes to fuse together with die sleeve 14 with the technique of seamless welding, There are one cavity through-holes, processing sections to be manufactured into the cavity consistent with formation of tubes convex closure for processing among the axle center of alloy punch 16, Purpose is the effect by power, and material is made to be squeezed into the shape consistent with mold cavity, one end of 15 remotely located plug of plug It is arranged to arc-shaped, purpose is oriented to inner hole of pipe and is smoothly inserted in plug 15, to make center and 16 cavity of alloy punch of tubing Central coaxial；There are one threaded holes for one end center processing of 15 remotely located plug of plug, using screw by running through positioning Plug 11 makes plug 15 be fixed on the end face inside location mandril 11 with locking mode, it is ensured that plug 15 is same with location mandril 11 Axis, it is coaxial to make plug 15 and equipment position axle center, then and so that material axle center is positioned with equipment axle center is consistent, and final improve is produced The stability of product processing；

The fine blanking die 2 includes upper die holder 21, lower die holder 22, caliber mould 23, tail plunger tip stick 24, standard guide post 25 and determines Position baffle 26, lower die holder 22 are designed to down " recessed " shape, it is therefore an objective to are stuck on the positioning seat of equipment by groove location, in addition also be made The locking pattern fastened with sliding block fixes lower die holder 22, and the main support force for providing level of processing direction ensures pipe fitting processing Stability；Lower die holder 22 and about 21 upper die holder match, when assembly, the first fixed two standard guide posts 25 of lower die holder 22, then it is sharp Assembled along standard guide post 25 with the guide pillar hole of upper die holder 21, finally using two screws be inserted in above upper die holder 21 with Lower die holder 22 is locked, and upper die holder 21 is similarly designed to " recessed " type, and purpose provides level of processing direction as lower die holder 22 Support force, ensure that product is shown in the stability of work, the fixed form of upper die holder 21 is then to utilize equipment longitudinally to compress to carry out position Fixed, caliber mould 23 is sleeved between lower die holder 22 and upper die holder 21, and caliber mould 23 is designed to hollow " T " font, caliber mould 23 centrally disposed central shaft holes 231 are for ensuring that pipe end is pressed into end size, and hole size then designs and pipe fitting indentation essence The requirement for rushing end is consistent, and tolerance is within the scope of 0.005mm, and the effect on " T " font head is mainly to provide position with spiral shell The mode of silk locking is connected to upper die holder 21 and lower die holder 22, and then is bonded with die holder end face, provides the branch in level of processing direction The material of support force, caliber mould 23 uses YG6/8 high strength steels, this material has the characteristics such as high intensity, high-wearing feature, to pipe fitting Stability processing provides basic guarantee requirement, and positioning baffle 26 is designed to " rectangle " shape with holes, the lower part of " rectangle " Coordinate with the square groove of lower die holder 22, reuses screw and carry out both ends fixation locking, the first half of " rectangle " is fastened on upper mold In the square groove of seat 21, the centrally disposed interstitial hole of positioning baffle 26 is primarily used to be oriented to tail plunger tip stick 24, and positioning baffle 26 main functions are to provide the support force of 24 horizontal direction of tail plunger tip stick, and tail plunger tip stick 24 is designed to major part " ten " shape, vertically One end of major part run through to the right from the left side of positioning baffle 26, end face can be pushed after pipe fitting processing using oil cylinder, Because pipe fitting is formed in 23 embedded SMA actuators of caliber mould, only grant thrust just can ensure that can easily acquire processing after Pipe fitting, at the same the hand of operator need not also reach mold processing in the range of, so as to avoid because equipment protection measure fail Industrial injury is caused to occur afterwards.And lateral end face need to be placed on the left side of positioning baffle 26, and when just can ensure that processing in this way, tail plunger tip Stick 24 has enough support forces to ensure that formation of tubes convex closure and indentation end fine processing, the other end of tail plunger tip stick 24 then stretch into The middle part of caliber mould 23 provides the support force of pipe fitting horizontal direction, convex in the tail end processing reservation one of 24 microcephaly of tail plunger tip stick The position risen, when being primarily used to prevent pipe fitting from processing, pipe fitting is deformed into pore, and the hole size to influence pipe fitting is wanted It asks, above structure processing unit (plant) for foring straight tube fine position.

In the present embodiment, the anti-Front-end Design for drawing material punch 1 is fixed in such a way that screw is stuck in equipment, and punch is expected in anti-drawing 1 rear end is then designed to the cavity through-hole consistent with pipe fitting convex closure shape, and when pipe fitting is processed, anti-drawing material punch 1 can be with setting Standby level is close to the movement of caliber mould direction, after the completion of predetermined stroke, is just bonded with 23 end face of caliber mould is added, and pipe fitting at this time Convex closure shape anti-drawing expect the outside expansion shape forming in 1 end of punch, and make pipe fitting be processed into anti-drawings expect 1 cavity through-hole of punch it is consistent The indentation fine end of shape, pipe fitting is then pipe fitting bulging in caliber mould 23, its final outer diameter bulging to caliber mould 23 The size of endoporus is consistent, final to ensure pipe fitting tolerance within the scope of 0.009mm, it is ensured that the assembling and leakproofness of pipe fitting. Simultaneously in pipe fitting processing, material returned rubber 12 is by free state compressive deformation, and at the same time, material can be in 16 type of alloy punch Intracavitary forms the convex closure of the same shape therewith, and when the decrement of material returned rubber 12 is just 5mm, convex closure is completed to process, and this When material and plug 15 between there are a clamping forces, if at this time without the elastic force of material returned rubber 12 exist, pipe fitting can be with conjunction Golden punch 16, plug 15 etc. return to original state together, and tube surface can be caused to pull or can not take out by hand at this time, when depositing In material returned rubber 12, during alloy punch 16, plug 15 etc. return to original state, rubber 12 is first to alloy punch 16 Elastic force is imposed, to make alloy punch 16 stop at machining state, and location mandril 11 can return to original state with plug 15, When rubber material returned glue 12 restores original state, pipe fitting endoporus can be with 15 relative displacement 5mm of plug at this time, and just makes pipe fitting at this time The circular arc portion clearance fit of inner wall and plug 15, therefore no longer there is clamping force, to make pipe fitting when carrying out convex closure molding not It is destroyed, the phenomenon that pipe fitting moves together with punch die when processing pipe fitting convex closure can be effectively prevent, to realize that work(is expected in anti-drawing Energy.And in entire pipe fitting processing, the decrement of material returned rubber 12 should not be too large, and no it will cause material returned rubber 12 Return it is difficult, and increase the production cost of material returned rubber 12, while the decrement of material returned rubber 12 is also unsuitable too small, otherwise Cushioning effect is not had so that pipe fitting wrecks in punching course, is found in practical operation, when the compression of material returned rubber 12 When amount is just 5mm, just it can realize that the suitable speed of material returned rubber 12 is returned under the action of meeting punched pipefitting buffering at this time Position.

With reference to shown in Fig. 4, location mandril 11 is designed to that " umbrella " shape, head process 90 ° of inclined-planes 111, mainly use spiral shell Silk end face is locked in equipment, and middle part annular groove 112 is mainly used to fix material returned rubber 12, size and material returned rubber 12 Almost the same, outer diameter can mainly enable and being formed between material returned rubber 12 and location mandril 11 than 12 small 0.2mm of material returned rubber Be full of cooperation, and 112 depth of annular groove is than 12 short 5mm of material returned rubber, mainly so that material returned rubber 12 there are the skies of flexible deformation Between, to have the function of making 16 delayed movement of alloy punch, the tail portion of location mandril 11 mainly allows the front end face 113 of plug 15 It is closely fitted therewith, it is ensured that 15 axle center of plug and positioning axle center are coaxial, and 11 axle center of location mandril is machined with through-hole 114, purpose Utilize screw locking plug 15.

In the present embodiment, material returned rubber 12 is fixed in 11 annular groove of location mandril, and material is polyurethane, polyurethane material With the high characteristic of high intensity, tear-proof, wearability, the thickness of material returned rubber 12 is 8mm, length 15mm, and ability in this way is true Decrement is protected in 5mm, after pipe fitting completes processing, alloy punch 16 will not return to original state with location mandril 11 at once, real Now function is expected in anti-drawing.

In the present embodiment, its material of alloy punch 16 uses high strength steel YG6, high strength steel YG6 to have high-wearing feature, height The characteristics of intensity, service life is also high, and can enhance the stability of processing pipe fitting, and 16 seamless welding of alloy punch is rushing The tail portion of die sleeve cylinder 14, and alloy punch 16 is provided centrally with the consistent cavity through-hole of formation of tubes convex closure, the purpose is to By the effect of power, material is made to be squeezed into the shape consistent with mold cavity.

Referring to Figure 5, caliber mould 23 is designed to that hollow " T " font, central shaft hole 231 are for ensuring that pipe end is pressed into Hold size, hole size then design that be pressed into the requirement at fine end with pipe fitting consistent, tolerance within the scope of 0.005mm, and " T " font head front end face is 1 molding closure end face of anti-drawing material punch, and when installation, " T " font tail portion cylindrical surface 235 is wrapped It is rolled between upper die holder 21 and lower die holder 22, and " T " font head rear end face 234 is adjacent to upper die holder 21 and lower die holder 22 simultaneously, And upper die holder 21 and lower die holder 22 are locked by screw hole 233, " T " font tail end end face 236 be after the pipe fitting material returned, As the limit to tail plunger tip stick 24.

With reference to shown in Fig. 6, tail plunger tip stick 24 is designed to that " ten " shape, top bump diametral plane 241 are used as preventing pipe fitting Endoporus aperture becomes smaller, and in process, nose end can be squeezed power and can preferentially be deformed into pipe, if internal wall of pipe orifice does not have branch The power of support can lead to nozzle distortion and destroy part, and top end surface 242 mainly provides the molding support force of part lateral extrusion, And the terminal of final power is transferred to above positioning baffle 26 by positioning surface 245 in the middle part of " ten " shape, the plug column of " ten " shape Body 243 is matched with the axis hole 231 of caliber mould 23, and middle part end face 244 is set as cascaded surface, can be to avoid tail plunger tip in the material returned Stick 24 is fallen, and the lower cylindrical face 246 of tail plunger tip stick 24 is run through to the right from the left side of positioning baffle 26, and purpose provides a freedom Can horizontal impulse stroke movable to the right, tail end face 247 can be bonded with it using oil cylinder and be pushed away after part processing Dynamic, because part is that processing is formed in the axis hole 231 of caliber mould 23, only granting thrust and just can ensure that can easily obtain Part after to processing, while in the range of the hand of operator need not also reach mold processing, so as to avoid because equipment it is anti- Industrial injury is caused to occur after shield measure failure.

The above is presently preferred embodiments of the present invention, but the present invention should not be limited to embodiment and attached drawing institute public affairs The content opened both falls within protection of the present invention so every do not depart from the lower equivalent or modification completed of spirit disclosed in this invention Range.

Claims (10)

1. a kind of mold of pipe end convex closure molding and fine synchronous processing, it is characterised in that including：Anti- drawing material punch and fine blanking die Tool, fine blanking die are mounted on the anti-dead astern drawn and expect punch；The fine blanking die includes upper die holder, lower die holder, caliber mould, tail top Plug, standard guide post and positioning baffle, on the positioning seat of equipment, standard guide post is arranged on lower die holder the lower die holder, The guide pillar hole to match with standard guide post is provided on upper die holder, the guide pillar hole of upper die holder is along the standard being fixed on lower die holder Guide post is assembled, and lower die holder is inserted in above upper die holder by two screws is locked, caliber die sleeve be connected on lower die holder with Between upper die holder, square groove, the square groove of the positioning baffle first half and lower die holder are both provided on the upper die holder and lower die holder Both ends are carried out with merga pass screw and fix locking, and the lower half of positioning baffle is fastened in the square groove of upper die holder, described fixed The center of position baffle offers interstitial hole, and the interstitial hole of positioning baffle, and tail top are from left to right run through in one end of tail plunger tip stick The middle part end face of plug is necessarily located at positioning baffle close to the side of caliber mould, and the front end of tail plunger tip stick then stretches to caliber mould Middle part, the axle center of the tail plunger tip stick expect that the plug axle center in punch is located in same level with anti-draw.

2. the mold of pipe end convex closure molding and fine synchronous processing as described in claim 1, it is characterised in that：The anti-drawing material Punch includes location mandril, material returned rubber, screw, die sleeve, plug and alloy punch, the middle part setting of the location mandril There are annular groove, the design of material returned rubber to circularize, the material returned rubber is socketed in the ring of location mandril by way of interference fit In shape slot, die sleeve is sleeved on by clearance fit on location mandril and end face is close to together in material returned rubber, the front end of plug Face is close to the tail end face of location mandril, and the welding of alloy punch is set at the tail portion of die sleeve, the center of the alloy punch It is equipped with the cavity through-hole consistent with formation of tubes convex closure, the anti-front end for drawing material punch is screwed in equipment, prevents Draw material punch tail end it is opposite with pipe fitting convex closure by cavity through-hole, opened up on the side wall of the die sleeve there are two symmetrically set Die sleeve is locked on location mandril by the notch set, screw after the notch in die sleeve, the die sleeve Symmetrical mistake proofing through-hole there are two being also set up on lateral wall.

3. the mold of pipe end convex closure molding and fine synchronous processing as claimed in claim 2, it is characterised in that：The locating core The head of stick processes one 90 ° of inclined-plane, is provided with annular groove in the middle part of location mandril, the annular groove depth is than material returned rubber Short 5mm.

4. the mold of pipe end convex closure molding and fine synchronous processing as claimed in claim 2, it is characterised in that：Location mandril tail End surface is provided centrally with the through-hole through location mandril axle center, and the design of material returned rubber circularizes, the material returned rubber size with Annular groove in the middle part of location mandril is identical, is sleeved in the annular groove of location mandril with the interference volume of 0.2mm.

5. the mold of pipe end convex closure molding and fine synchronous processing as claimed in claim 2, it is characterised in that：On the plug One end of remotely located plug is arranged to arc-shaped so that is oriented to inner hole of pipe and is smoothly inserted in plug, it is fixed to be close on the plug There are one threaded holes for one end setting of position plug, so that plug is fixed on calmly with locking mode by running through location mandril using screw On the end face of position plug tail portion.

6. the mold of pipe end convex closure molding and fine synchronous processing as described in claim 1, it is characterised in that：The caliber mould Be designed to hollow " T " font, the caliber mould include " T " font head front end face, screw hole, " T " font head rear end face, " T " font tail portion cylindrical surface and " T " font tail end end face, wherein " T " font head front end face and the anti-tail portion phase for drawing material punch It is right, it is the molding closure end face of anti-drawing material punch, " T " font tail portion cylindrical surface is mounted between upper die holder and lower die holder, " T " word Type head rear end face is adjacent to upper die holder and lower die holder, and is locked to upper die holder and lower die holder by screw hole；" T " font tail It is after the pipe fitting material returned, for being limited to tail plunger tip stick to hold end face.

7. the mold of pipe end convex closure molding and fine synchronous processing as described in claim 1, it is characterised in that：The tail plunger tip Stick is designed to " ten " shape, the tail plunger tip stick include top bump diametral plane, top end surface, plug cylinder, middle part end face, in Portion's positioning surface, lower cylindrical face and tail end face, wherein top bump diametral plane are for preventing pipe fitting endoporus aperture from becoming smaller, top End face mainly provides pipe fitting lateral extrusion molding support force, and the terminal of final power is the positioning surface turn in the middle part of " ten " shape It moves on to above positioning baffle, plug cylinder is matched with the axis hole of caliber mould, and middle part end face is set as cascaded surface, can in the material returned Tail plunger tip stick is avoided to fall, the lower cylindrical face of tail plunger tip stick is run through to the right from the left side of positioning baffle, it is possible to provide a freedom Can horizontal impulse stroke movable to the right, tail end face can be bonded with it using oil cylinder and be pushed after pipe fitting processing.

8. the mold of pipe end convex closure molding and fine synchronous processing as described in claim 1, it is characterised in that：The positioning gear Plate is designed to that " rectangle " shape with holes, the lower half of " rectangle " positioning baffle and the square groove of lower die holder coordinate, reuse Screw carries out both ends and fixes locking, and the first half of " rectangle " positioning baffle is fastened in the square groove of upper die holder, positioning baffle Interstitial hole be oppositely arranged with tail plunger tip stick, for being oriented to tail plunger tip stick.

9. the mold of pipe end convex closure molding and fine synchronous processing as claimed in claim 2, it is characterised in that：The material returned rubber Glue uses polyurethane material, and the thickness of material returned rubber is 8mm, length 15mm.

10. the mold of pipe end convex closure molding and fine synchronous processing as claimed in claim 2, it is characterised in that：Its feature exists In：The alloy punch is process using high strength steel YG6 materials, and the caliber mould is added using YG6/8 high strength steel materials Work forms.