CN106881405A - Tapered shaped can drawing die and stretch forming method - Google Patents
Tapered shaped can drawing die and stretch forming method Download PDFInfo
- Publication number
- CN106881405A CN106881405A CN201710171376.2A CN201710171376A CN106881405A CN 106881405 A CN106881405 A CN 106881405A CN 201710171376 A CN201710171376 A CN 201710171376A CN 106881405 A CN106881405 A CN 106881405A
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- stretching
- cup stamping
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000007493 shaping process Methods 0.000 claims abstract description 117
- 239000000463 material Substances 0.000 claims abstract description 47
- 238000009966 trimming Methods 0.000 claims abstract description 29
- 238000000465 moulding Methods 0.000 claims abstract description 24
- 230000008569 process Effects 0.000 claims abstract description 18
- 238000013138 pruning Methods 0.000 claims abstract description 11
- 230000002787 reinforcement Effects 0.000 claims description 10
- 238000004080 punching Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 6
- 230000009977 dual effect Effects 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 5
- 230000000750 progressive effect Effects 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 3
- 238000009740 moulding (composite fabrication) Methods 0.000 description 24
- 238000010586 diagram Methods 0.000 description 5
- 230000007704 transition Effects 0.000 description 5
- 210000003205 muscle Anatomy 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 210000002435 tendon Anatomy 0.000 description 2
- 244000141353 Prunus domestica Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/08—Dies with different parts for several steps in a process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/22—Deep-drawing with devices for holding the edge of the blanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
- B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
- B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
- B21D51/2615—Edge treatment of cans or tins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
- B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
- B21D51/2615—Edge treatment of cans or tins
- B21D51/263—Flanging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
- B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
- B21D51/2646—Of particular non cylindrical shape, e.g. conical, rectangular, polygonal, bulged
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention discloses a kind of tapered shaped can drawing die and stretch forming method, the mould includes the cup stamping mould of the section blanking and first time stretching for tank body material, tank body after for being stretched to first time carries out the stretching die of second stretching, tank body after for being stretched to second carries out the shaping mould and the edger for carrying out trimming pruning to the tank body flange part after shaping of final molding, it is molded by the multiple working procedure of the draw ratios such as use, it is stepped up stretching height, being basically unchanged of cross-sectional area of stretching or change are little, make the stretching Curvature varying of subsequent handling in forming process essentially identical, control material flow tendency, so as to the Instability wrinkling and splintering problem that solve easily to occur in taper two-piece can forming process, with practical value very high.
Description
Technical field
The present invention relates to a kind of cold punching die technical field, more particularly, to a kind of tapered shaped can drawing die and it is drawn into
Type method.
Background technology
With the implementation of product lightweight concept, the theory of " energy-saving and emission-reduction, low-carbon economy " is implemented, for the material into tank
Thickness is constantly thinning, and under the premise of ensuring that food cans items fundamental performance parameter meets requirement, certainly will need reinforcement material
Hardness.During due to cone tank drawing and forming, inevitably there is hanging deformed region, extremely easily go out in forming process
Existing Instability wrinkling, or due to stress concentration, frictional force is bigger than normal and cause tank body drawing.Therefore high rigidity, low thickness,
Under the restriction of low ductile material, traditional one-off drawing technique causes that the shaping difficulty of pyramidal food tank is greatly increased.Change
The moulding process of food cans, the transformation for being stretched to multi-drawing from single also seems particularly significant.Many tapered shaped cans start at present
Using twice, three even more drawing and forming modes, to meet the requirement of stretcher strain coefficient, generally using by greatly to
Small drawing process.By taking current most common three drawing and formings as an example, during using descending pulling method, due to local press surface
Product is limited, and three process shaping suspension area domain occurs in the presence of conversion conical surface shaping is faced directly.The operation of tank body the 3rd easily occurs
Instability wrinkling phenomenon is all produced at tank rupture, and tank body knuckle；This is not yet retrieved in existing open file to ask
The solution of topic.
The content of the invention
It is an object of the invention to easily tank rupture, and tank body transition circle occur during the tapered shaped can punching press for solving prior art
The problem of Instability wrinkling phenomenon is produced at angle, there is provided a kind of tapered shaped can drawing die and stretch forming method, ensureing tapered shaped can
On the premise of performance requirements, Instability wrinkling at tank rupture and knuckle can be effectively solved the problems, such as.
The present invention for solve the concrete technical scheme that uses of above-mentioned technical problem for：A kind of tapered shaped can drawing die, including：
Cup stamping mould, section blanking and stretching for the first time for tank body material, the tank body after stretching for the first time is highly finished pot
The 50% to 70% of body height, the tank body taper after stretching for the first time is the 80% to 120% of finished product tank body taper, after stretching for the first time
Tank body intermediate cross-section product for finished product tank body intermediate cross-section product 90% to 95%, for the first time stretching flange width be finished product
8-12 times of tank body flange width.
Stretching die, second stretching is carried out for the tank body after being stretched to first time, and the tank body after second stretching is highly
For finished product tank body height 70% to 90% and tank body after stretching more than first time highly, second stretch after tank body taper be
The 90% to 110% of finished product tank body taper, the tank body intermediate cross-section after second stretching is finished product tank body intermediate cross-section product
95% to 100%.
Shaping mould, for being stretched to second after tank body carry out final molding, including tank body enlarging, flange, tank skin add
The shaping of strong muscle and tank bottom reinforcement, highly for finished product tank body highly, the tank body taper after shaping is finished product to the tank body after shaping
Tank body taper, the tank body intermediate cross-section product after shaping is finished product tank body intermediate cross-section product.
Edger, for carrying out trimming pruning, the tank body flange knot after trimming pruning to the tank body flange part after shaping
The cover that structure meets dual rolling sealing coordinates requirement.
The total fourth officer mould of technical scheme, i.e. cup stamping mould, stretching die, shaping mould and edger.For high hard
Degree, the shaping of the tapered shaped can of low ductile material, the stretching floor space of preceding three process is essentially identical, i.e., by the stretching such as use
The multiple working procedure shaping of ratio, is stepped up stretching height, and being basically unchanged of cross-sectional area of stretching or change are little, make to be molded
The stretching Curvature varying of subsequent handling is essentially identical in journey, material flow tendency is controlled, so as to solve taper two panels jug forming mistake
The Instability wrinkling and splintering problem easily occurred in journey.
The present invention eliminates knuckle shaping Instability wrinkling phenomenon, while taking into account mould molding by increasing flanging area
Conversion station orientation problem between operation, using etc. draw ratio be stepped up workpiece height small area taper drawing be molded.Root
According to stretching principle, the technical scheme reduces mold surface roughness in the knuckle of increase cavity plate, increases material lubrication, together
When ensure that either simplex sequence stretching height is not too high in the case of, be molded by multi-drawing, can effectively solve the unstability of final products
Corrugation problem, while ensureing the performance requirements of food cans.
Preferably, cup stamping mould includes cup stamping mould lower template and the cup stamping mould die shoe in cup stamping mould lower template, punching
The center of cup mould die shoe is provided with cup stamping mould lower mold core, and the cup stamping mould that cup stamping mould lower mold core is provided around on cup stamping mould die shoe is consolidated
Cup stamping mould cavity plate is set in reservation, cup stamping model fixing seat, cup stamping mould lower cylinder is provided with below cup stamping mould die shoe, under cup stamping mould
The piston of cylinder by through cup stamping mould die shoe cup stamping mould push rod and the cup stamping mould top being arranged on the inside of cup stamping mould cavity plate
Feed ring is connected, and cup stamping mould upper bolster is arranged on cup stamping mould upper die plate lower section, and the lower section of cup stamping mould upper bolster sets cup stamping mould convex-concave
Mould, the cup stamping mould upper mold core being connected with cup stamping mould upper cylinder is arranged on the center of cup stamping mould punch-die, is set in cup stamping mould convex-concave
The cup stamping mould discharging ring of mould periphery is connected on cup stamping mould upper bolster by spring.
Cup stamping mould belongs to blanking forming compound die, including lower template, cylinder, die shoe, fixed seat, push rod, cavity plate, liftout circle,
Lower mold core, discharging ring, punch-die, upper mold core, upper bolster and upper die plate etc..Lower template is the support of whole mould, is mould
Base plate, die shoe is used for fixed lower mould, and upper die plate is the base plate that upper mould is fixed, and upper bolster is used for fixed upper mould；Cylinder provides pressure
Bian Li, together with push rod, liftout circle constituting material pressing device realizes flanging function, is adjusted by the entrance air pressure size for adjusting cylinder
Pressure-pad-force；Fixed seat Main Function is to fix cavity plate, adjusts cavity plate blanking level and provides molding space, cavity plate and convex-concave
Mould coordinates, and in the presence of power source, is punched sheet stock, realizes blanking function, and discharging ring releases waste material, waste material circle is not enclosed within convex
On cavity plate；After the completion of blanking action, punch-die is continued traveling downwardly in the presence of power source, is interacted together with lower mold core, is drawn
Plate material forming is stretched, mould is finally gone up and is continued to go upward to top dead-centre under dynamic action, lower mould restores, and completes a punching course.
Preferably, stretching die includes lower die of stretching die plate and the seat of the lower die of stretching die on lower die of stretching die plate, draw
The center for stretching mould die shoe is provided with lower die of stretching die core, and the periphery of lower die of stretching die core is provided with stretching die liftout circle, under stretching die
Be provided with stretching die lower cylinder below die holder, the piston of stretching die lower cylinder by through lower die of stretching die seat stretching die top
Bar is connected with stretching die liftout circle；Upper die of stretching die seat is arranged on upper die of stretching die plate lower section, and the lower section of upper die of stretching die seat sets
Stretching die cavity plate is put, the upper die of stretching die core being connected with stretching die upper cylinder is arranged on the center of stretching die cavity plate.
Preferably, shaping mould includes shaping mould die shoe, the center of shaping mould die shoe is provided with shaping mould lower mold core, into
The periphery of pattern lower mold core is provided with shaping mould liftout circle, shaping mould lower cylinder is provided with below shaping mould die shoe, under shaping mould
The piston of cylinder by through the shaping mould push rod of shaping mould die shoe be connected with shaping mould liftout circle；Moulding upper mould seat sets
Put below moulding upper mould plate, moulding upper mould seat lower section set shaping mould cavity plate, be connected with shaping mould upper cylinder into
Pattern upper mold core is arranged on the center of shaping mould cavity plate.
Preferably, edger includes edger die shoe, edger die shoe is provided with punch-pin, around the periphery of punch-pin
It is provided with cutoff tool；Edger upper bolster is arranged on edger upper die plate lower section, and the lower section setting edger of edger upper bolster is recessed
Mould, the edger centring ring being connected with edger upper cylinder is arranged on the center of edger cavity plate.
Preferably, the top surface of cup stamping mould liftout circle is convexly equipped with the annular convex rib around cup stamping mould lower mold core, the cup stamping
The distance between annular convex rib on mould liftout circle and cup stamping mould liftout circle inside edge equal, the cup stamping mould on the inside of annular convex rib
Liftout circle upper surface is wide cyclic structure, between the annular center line of annular convex rib and cup stamping mould liftout circle inside edge
Distance is 5-15 millimeters；The bottom surface of cup stamping mould punch-die is provided with annular groove corresponding with annular convex rib, the annular groove
Cross section is trapezoidal, and the depth of annular groove is 0.8 to 1.2 times of tank body material thickness, and the slot bottom width of annular groove is tank
2 to 4 times of body material thickness, the width of rebate of annular groove is 5 to 8 times of tank body material thickness, the horizontal stroke of the annular convex rib
Section is adapted with the cross section of annular groove.
Tank body material becomes three-dimensional box part, at punch-pin and the edge of cavity plate during drawing and forming by sheet stock
There is the pulling force of horizontal direction and the extruding force of vertical direction in part, have corrugated trend so as to cause tank body material.Work as mould
Pressure-pad-force it is inadequate when, tank body edge of materials easily produces Instability wrinkling, and passes through to improve pressure-pad-force and can improve this phenomenon.
But product competitiveness is improved in order to reduce production cost in manufacturer, high rigidity, the feelings of the tank body material of low ductility are used
Under condition, if using traditional plane edge-pressing mode, while improve constantly pressure-pad-force to be easy for causing workpiece tensile fracture.Using
After annular convex rib and corresponding annular groove are set between plane and cup stamping mould punch-die lower plane on cup stamping mould liftout circle, tank
When body material is stretched, stretching outermost is traditional plane binder, during material is flowed into and is molded between punch-pin and cavity plate,
The transition by annular convex rib and annular groove is needed, tank body material can slow down becoming for Instability wrinkling in the presence of its resistance
Gesture, corrugated purpose is reduced or eliminated so as to reach.The cross section of the annular convex rib of reasonable selection annular groove and its adaptation is big
It is small, the size of resistance can be adjusted, to adapt to the tank body material of unlike material.And the gap between annular groove and annular convex rib
The usually thickness of a piece of tank body material.
Preferably, cup stamping mould is absolute construction, stretching die, shaping mould and the integrated multiple operation progressive die knot of edger
Structure, the cup stamping mould, is provided with tank body clamping conveyer between stretching die, shaping mould and edger.By stretching die, shaping mould and
Edger makes integrated multiple operation progressive die structure, it is possible to use the same power source, reduces mould volume, simplifies work
Skill.Now stretch, shaping and trimming belong to step-feeding punch-forming mold, including mould bases, stretching die, shaping mould and edger.
Mould bases is mainly the architecture of whole mould including lower template, upper die plate, cylinder etc..Stretching die mainly include lower mold core, under
Die holder, push rod, liftout circle, cavity plate, upper mold core, upper bolster etc..Shaping moudle structure function is similar with stretching die, mainly including lower mould
Seat, push rod, liftout circle, lower mold core, cavity plate, upper mold core, upper bolster etc..Edger mainly include die shoe, punch-pin, cutoff tool,
Cavity plate, centring ring, upper bolster etc..Its operation logic is as follows：In the presence of power source, upper die plate drives three upper moulds of mould
Move downward, cavity plate and the lower mold core effect of stretching die complete stretching process, and cavity plate and the lower mold core effect of shaping mould are completed into
Type operation, to being deburring product orientation, then cavity plate continues to move downward the centring ring of edger, coordinates completion to repair with punch-pin
Side, continues downward dead-centre motion, cutoff tool cut-out waste material, by after bottom dead center, upper die plate drives the upper mould of three moulds upward
Top dead-centre is moved to, stretching, shaping and trimming process is completed.
Alternatively, cup stamping mould, stretching die, shaping mould and edger are absolute construction, the cup stamping
Tank body clamping conveyer is provided between mould, stretching die, shaping mould and edger.The stretching die of this programme, shaping mould and trimming
Mould is independently arranged, and need to respectively use power source, and its operation principle is similar with foregoing integral structure.
The tapered shaped can stretch forming method of foregoing tapered shaped can drawing die, comprises the following steps：
A. cup stamping step：Tank body material sends into cup stamping mould, the sheet stock needed for cutting tank body stretching, and the edge of fixed sheet stock is simultaneously completed
The first time stretching of sheet stock, the tank body after stretching for the first time is highly controlled the 50% to 70% of finished product tank body height（Work as finished product
When the height of tank body is 50mm, the tank body after stretching for the first time is highly controlled in 25mm-35mm）, the tank body after stretching for the first time
Mould taper control in finished product tank body taper 80% to 120%（I.e. when the taper of finished product tank body is 5 degree, the tank after stretching for the first time
Body mould taper control is at 4 degree to 6 degree）, the tank body intermediate cross-section product control after stretching for the first time is in finished product tank body intermediate cross-section
Long-pending 90% to 95%（I.e. when the intermediate cross-section product of finished product tank body is 100 square centimeters, the centre of tank body after stretching for the first time
Cross-sectional area is controlled at 90 square centimeters to 95 square centimeters）, the flange width of stretching is finished product tank body flange width for the first time
8-12 times, pressure-pad-force is 200-700kPa, complete cup stamping step tank body by tank body clamping conveyer be sent to stretching
Mould.
B. stretching step：Tank body after being stretched to first time carries out second stretching, and the tank body after second stretching is highly
Control in finished product tank body height 70% to 90% and the tank body after being stretched more than first time highly, second stretch after tank body cone
The 90% to 110% of finished product tank body taper, the tank body intermediate cross-section product control after second stretching is in finished product tank body for degree control
The 95% to 100% of intermediate cross-section product, the tank body for completing stretching step is sent to shaping mould by tank body clamping conveyer.
C. forming step, the tank body after being stretched to second carries out final molding, including tank body enlarging, flange, tank skin add
The drawing and forming of strong muscle and tank bottom reinforcement, the tank body after forming step highly be finished product tank body highly, the tank after forming step
Body taper is finished product tank body taper；Tank body intermediate cross-section product after forming step is finished product tank body intermediate cross-section product, is completed
The tank body of forming step clamps conveyer and is sent to edger by tank body.
D. trimming process, trimming pruning, the tank body flange knot after trimming pruning are carried out to the tank body flange part after shaping
The cover that structure meets dual rolling sealing coordinates requirement, and the tank body for completing trimming process clamps conveyer removal trimming by tank body
Mould.
The method of the present invention is directed to high rigidity, the shaping of the pyramidal food tank of low ductile material, by the stretching such as use
The multiple working procedure shaping of ratio, is stepped up stretching height, and the basic cross-sectional area for keeping stretching is constant or changes less, makes shaping
During subsequent handling stretching Curvature varying it is essentially identical, control material flow tendency, solve taper two-piece can forming process
The Instability wrinkling of middle appearance and the splintering problem being clear to.The shaping of tank body relies primarily on the flowing of material, due to three shapings
Cross section size it is identical, cause cup stamping operation need consider in the case where drawing coefficient is small, how preferably to solve material
The problem of flowing.Pulling force is small with the angle of material flow direction in the face of off-chip material, with the increase of press depth, tank skin with
Tank skin is by the power parallel to pressing direction at the fillet of flange boundary, and the material of flange is by the power perpendicular to pressing direction, two
Material at person flows through fillet linking.Ensure that the mobility of the material of flange is unaffected.Cup stamping operation is guarantee
Material flowability, its emphasis is the selection of pressure-pad-force and the linking transition of fillet, and general pressure-pad-force is 200-700kPa（That is 2-
7bar）It is proper.The principle of stretching process is essentially identical with cup stamping operation, stretching is increased on the basis of cup stamping operation high
Degree.The mould of molding procedure prunes remaining side to meet product feature shaping, finally, completes whole formed product.
Forming step of the invention includes the shaping of can body transition structure, and statement mould is not working the present invention in detail in addition
During use tank body clamping conveyer, the contents of the section referring to applicant's earlier application " it is reciprocating clamping transmission dress
Put "（Publication No. CN106144436A）.Meanwhile, the present invention is by tank structure（Such as highly, cross-sectional area）Restriction
To state corresponding mould structure, this is to one skilled in the art completely understandable.
The beneficial effects of the invention are as follows：Easily occur tank body when it efficiently solves the tapered shaped can punching press of prior art to break
Split, and the problem of Instability wrinkling phenomenon is produced at tank body knuckle, tapered shaped can drawing die of the invention and tank body are drawn into
Type method can effectively solve Instability wrinkling at tank rupture and knuckle on the premise of tapered shaped can performance requirements is ensured
Problem, with practical value very high.
Brief description of the drawings
Fig. 1 is a kind of structural representation of tapered shaped can drawing die cup stamping mould of the present invention；
Fig. 2 is a kind of group structural representation of tapered shaped can drawing die stretching die of the present invention, shaping mould and edger；
Fig. 3 is a kind of tank structure schematic diagram after the completion of cup stamping operation of the present invention；
Fig. 4 is a kind of tank structure schematic diagram after the completion of stretching process of the present invention；
Fig. 5 is a kind of tank structure schematic diagram after the completion of molding procedure of the present invention；
Fig. 6 is a kind of tank structure schematic diagram after the completion of trimming operation of the present invention；
Fig. 7 is its liftout circle and a kind of fit structure schematic diagram of punch-die when cup stamping die worker of the present invention makees, and ring is shown in figure
Shape convex tendon, annular groove and tank body material.
In figure：1. cup stamping mould lower template, 2. cup stamping mould lower cylinder, 3. cup stamping mould die shoe, 4. cup stamping model fixing seat, 5. rushes
Cup mould push rod, 6. cup stamping mould cavity plate, 7. cup stamping mould liftout circle, 8. cup stamping mould lower mold core, 9. cup stamping mould discharging ring, 10. cup stamping mould
Punch-die, 11. cup stamping mould upper mold cores, 12. cup stamping mould upper bolsters, 13. cup stamping mould upper die plates, 14 lower die of stretching die plates, 15. draw
Stretch mould upper die plate, 16. stretching die lower cylinders, 17. lower die of stretching die cores, 18. lower die of stretching die seat, 19. stretching die push rods,
20. stretching die liftout circles, 21. stretching die cavity plates, 22. upper die of stretching die cores, 23. upper die of stretching die seat, mould under 24. shaping moulds
Seat, 25. shaping mould push rods, 26. shaping mould liftout circles, 27. shaping mould lower mold cores, 28. shaping mould cavity plates, 29. moulding upper moulds
Core, 30. moulding upper moulds seat, 31. edger die shoes, 32. punch-pin, 33. cutoff tools, 34. edger cavity plates, 35. trimmings
Mould centring ring, 36. edger upper bolsters, 37. shaping mould lower cylinders, 38. springs, 39. tank bodies, 40. flange, 41. convex annulars
Muscle, 42. annular grooves, 43. tank body materials.
Specific embodiment
Below by embodiment, and specific embodiment of the invention is described further with reference to accompanying drawing.
Embodiment 1
In embodiment 1 as shown in Figure 1, a kind of tapered shaped can drawing die, including the section blanking for tank body material and
The cup stamping mould of one-off drawing（See Fig. 1）, the cup stamping mould include cup stamping mould lower template 1 and the cup stamping in cup stamping mould lower template
Mould die shoe 3, the center of cup stamping mould die shoe is provided with cup stamping mould lower mold core 8, is provided around under cup stamping mould on cup stamping mould die shoe
Cup stamping mould cavity plate 6 is set on the cup stamping model fixing seat 4 of core rod, cup stamping model fixing seat, cup stamping is provided with below cup stamping mould die shoe
Mould lower cylinder 2, the piston of cup stamping mould lower cylinder by through cup stamping mould die shoe cup stamping mould push rod 5 be arranged on cup stamping mould
Cup stamping mould liftout circle 7 on the inside of cavity plate is connected, and cup stamping mould upper bolster 12 is arranged on the lower section of cup stamping mould upper die plate 13, mould on cup stamping mould
The lower section of seat sets cup stamping mould punch-die 10, and the cup stamping mould upper mold core 11 being connected with cup stamping mould upper cylinder is arranged on cup stamping mould convex-concave
The center of mould, the cup stamping mould discharging ring 9 for being set in cup stamping mould punch-die periphery is connected on cup stamping mould upper bolster by spring 38.
The height of tank body 39 after cup stamping mould is stretched for the first time is the 50% to 70% of finished product tank body height（The present embodiment is
50%）, the tank body taper after stretching for the first time is the 80% to 120% of finished product tank body taper（The present embodiment is 80%）, draw for the first time
Tank body intermediate cross-section product after stretching is the 90% to 95% of finished product tank body intermediate cross-section product（The present embodiment is 90%）, for the first time
The flange width of stretching is 8-12 times of the width of finished product tank body flange 40（The present embodiment is 10 times, sees Fig. 3）.
Stretching die（See Fig. 2）Tank body after for being stretched to first time carries out second stretching, and the stretching die includes drawing
Mould lower template 14 and the seat of the lower die of stretching die on lower die of stretching die plate 18 are stretched, the center of lower die of stretching die seat is provided with stretching die
Lower mold core 17, the periphery of lower die of stretching die core is provided with stretching die liftout circle 20, and the lower section of lower die of stretching die seat is provided with stretching die
Cylinder 16, the piston of stretching die lower cylinder by through the stretching die push rod 19 of lower die of stretching die seat connect with stretching die liftout circle
Connect；Upper die of stretching die seat 23 is arranged on the lower section of upper die of stretching die plate 15, and the lower section of upper die of stretching die seat sets stretching die cavity plate 21,
The upper die of stretching die core 22 being connected with stretching die upper cylinder is arranged on the center of stretching die cavity plate.
Tank body after stretching die second is stretched highly for finished product tank body height 70% to 90% and more than first time
Tank body after stretching is carried out on the basis of highly, i.e., being stretching in stretching for the first time for the second time, is in height increased（This implementation
Example is 70%）, the tank body taper after second stretching is the 90% to 110% of finished product tank body taper（The present embodiment is 90%）, second
Tank body intermediate cross-section product control after secondary stretching is the 95% to 100% of finished product tank body intermediate cross-section product（The present embodiment is
95%, see Fig. 4）；
The tank body that shaping mould is used for after being stretched to second carries out final molding（See Fig. 2）, including tank body enlarging, flange, tank skin
The shaping of the arc transition structure of reinforcement, tank bottom reinforcement and each position of tank body.The shaping mould includes mould under shaping mould
Seat 24, the center of shaping mould die shoe is provided with shaping mould lower mold core 27, and the periphery of shaping mould lower mold core is provided with shaping mould liftout circle
26, be provided with shaping mould lower cylinder 37 below shaping mould die shoe, the piston of shaping mould lower cylinder by through shaping mould under
The shaping mould push rod 25 of die holder is connected with shaping mould liftout circle；Moulding upper mould seat 30 is arranged on moulding upper mould plate lower section, into
The lower section of pattern upper bolster sets shaping mould cavity plate 28, and the moulding upper mould core 29 being connected with shaping mould upper cylinder is arranged on shaping
The center of mould cavity plate.Highly for finished product tank body highly, the tank body taper after shaping is finished product tank body taper to tank body after shaping, into
Tank body intermediate cross-section product after type is finished product tank body intermediate cross-section product（See Fig. 5）.
Edger is used to carry out trimming pruning to the tank body flange part after shaping（See Fig. 2）, the tank body after trimming pruning
The cover that turnup structure meets dual rolling sealing coordinates requirement（See Fig. 6）.Edger includes edger die shoe 31, mould under edger
Seat is provided with punch-pin 32, and cutoff tool 33 is provided with around the periphery of punch-pin；Edger upper bolster 36 is arranged under edger upper die plate
Side, the lower section of edger upper bolster sets edger cavity plate 34, and the edger centring ring 35 being connected with edger upper cylinder is set
In the center of edger cavity plate.
The cup stamping mould of the present embodiment is absolute construction, stretching die, shaping mould and the integrated multiple operation progressive die of edger
Structure, shaping mould is wholely set with the upper die plate of trimming with the upper die plate of stretching die, lower template and the stretching of shaping mould and trimming
The lower template of mould is wholely set, and using the same power source, three moulds are synchronized with the movement, cup stamping mould, stretching die, shaping mould and trimming
Tank body clamping conveyer is provided between mould, is automatically delivered for the tank body between mould.
The tapered shaped can stretch forming method of the tapered shaped can drawing die of the present embodiment, comprises the following steps：
A. cup stamping step：Tank body material sends into cup stamping mould, the sheet stock needed for cutting tank body stretching, and the edge of fixed sheet stock is simultaneously completed
The first time stretching of sheet stock, the tank body after stretching for the first time is highly controlled the 50% of finished product tank body height, after stretching for the first time
, the 80% of finished product tank body taper, the tank body intermediate cross-section product control after stretching for the first time is in finished product tank body for tank body mould taper control
The 90% of intermediate cross-section product, the flange width of stretching is 10 times of finished product tank body flange width for the first time, and pressure-pad-force is
400kPa, the tank body for completing cup stamping step is sent to stretching die by tank body clamping conveyer.
B. stretching step：Tank body after being stretched to first time carries out second stretching, and the tank body after second stretching is highly
Control the 70% of finished product tank body height, the tank body mould taper control after stretching for second the 90% of finished product tank body taper, second
The 95% of finished product tank body intermediate cross-section product, the tank body for completing stretching step leads to for tank body intermediate cross-section product control after stretching
Cross tank body clamping conveyer and be sent to shaping mould.
C. forming step, the tank body after being stretched to second carries out final molding, including tank body enlarging, flange, tank skin add
The drawing and forming of strong muscle and tank bottom reinforcement, highly for finished product tank body highly, the tank body taper after shaping is the tank body after shaping
Finished product tank body taper, the tank body intermediate cross-section product after shaping is finished product tank body intermediate cross-section product, completes the tank of forming step
Body clamps conveyer and is sent to edger by tank body.
D. trimming process, trimming pruning, the tank body flange knot after trimming pruning are carried out to the tank body flange part after shaping
The cover that structure meets dual rolling sealing coordinates requirement, and the tank body for completing trimming process clamps conveyer removal trimming by tank body
Mould.
Embodiment 2
The cup stamping mould of embodiment 2, stretching die, shaping mould and edger are absolute construction, cup stamping mould, stretching die, shaping mould and
Tank body clamping conveyer is provided between edger.The top surface of cup stamping mould liftout circle is convexly equipped with the annular around cup stamping mould lower mold core
Convex tendon 41（See Fig. 7）, the distance between annular convex rib on the cup stamping mould liftout circle and cup stamping mould liftout circle inside edge phase
Deng the cup stamping mould liftout circle upper surface on the inside of annular convex rib is wide cyclic structure, the annular center line of annular convex rib and punching
The distance between cup mould liftout circle inside edge is 5-15 millimeters（The present embodiment is 10 millimeters）；The bottom surface of cup stamping mould punch-die sets
There is annular groove 42 corresponding with annular convex rib, the cross section of the annular groove is trapezoidal, the depth of annular groove is tank body
1.1 times of material thickness, the slot bottom width of annular groove is 3.5 times of the thickness of tank body material 43, the width of rebate of annular groove
It is 6.5 times of tank body material thickness, the cross section of the annular convex rib is adapted with the cross section of annular groove.The present embodiment
Stretching die, shaping mould and edger are independently arranged mould, need to respectively use power source, and remaining and embodiment 1 are identical.
In addition to the implementation, in the scope disclosed in claims of the present invention and specification, skill of the invention
Art feature or technical data can be reselected and combined, so as to constitute new implementation method, these present invention are without detailed
The implementation method of thin description is that those skilled in the art can just realize easily without creative work, therefore these are not detailed
The implementation method of description also should be regarded as specific embodiment of the invention and within protection scope of the present invention.
Claims (9)
1. a kind of tapered shaped can drawing die, it is characterised in that including：
Cup stamping mould, section blanking and stretching for the first time for tank body material, the tank body after stretching for the first time is highly finished pot
The 50% to 70% of body height, the tank body taper after stretching for the first time is the 80% to 120% of finished product tank body taper, after stretching for the first time
Tank body intermediate cross-section product for finished product tank body intermediate cross-section product 90% to 95%, for the first time stretching flange width be finished product
8-12 times of tank body flange width；
Stretching die, second stretching is carried out for the tank body after being stretched to first time, and the tank body after second stretching is highly into
The 70% to 90% of product tank body height and the tank body after being stretched more than first time highly, second stretch after tank body taper be finished product
The 90% to 110% of tank body taper, second stretch after tank body intermediate cross-section for finished product tank body intermediate cross-section product 95% to
100%；
Shaping mould, final molding, including tank body enlarging, flange, tank skin reinforcement are carried out for the tank body after being stretched to second
And the shaping of tank bottom reinforcement, highly for finished product tank body highly, the tank body taper after shaping is finished product tank body to the tank body after shaping
Taper, the tank body intermediate cross-section product after shaping is finished product tank body intermediate cross-section product；
Edger, for carrying out trimming pruning to the tank body flange part after shaping, the tank body turnup structure after trimming is pruned is expired
The cover of sufficient dual rolling sealing coordinates requirement.
2. tapered shaped can drawing die according to claim 1, it is characterised in that the cup stamping mould includes cup stamping mould lower template
（1）And the cup stamping mould die shoe in cup stamping mould lower template（3）, the center of cup stamping mould die shoe is provided with cup stamping mould lower mold core
（8）, the cup stamping model fixing seat of cup stamping mould lower mold core is provided around on cup stamping mould die shoe（4）, punching is set on cup stamping model fixing seat
Cup mould cavity plate（6）, cup stamping mould lower cylinder is provided with below cup stamping mould die shoe（2）, the piston of cup stamping mould lower cylinder by through
Cup stamping mould die shoe cup stamping mould push rod（5）With the cup stamping mould liftout circle being arranged on the inside of cup stamping mould cavity plate（7）Connection, cup stamping
Mould upper bolster（12）It is arranged on cup stamping mould upper die plate（13）Lower section, the lower section of cup stamping mould upper bolster sets cup stamping mould punch-die
（10）, the cup stamping mould upper mold core being connected with cup stamping mould upper cylinder（11）The center of cup stamping mould punch-die is arranged on, cup stamping is set in
The cup stamping mould discharging ring of mould punch-die periphery（9）By spring（38）It is connected on cup stamping mould upper bolster.
3. tapered shaped can drawing die according to claim 1, it is characterised in that the stretching die includes lower die of stretching die plate
（14）And the lower die of stretching die seat on lower die of stretching die plate（18）, the center of lower die of stretching die seat is provided with lower die of stretching die core
（17）, the periphery of lower die of stretching die core is provided with stretching die liftout circle（20）, the lower section of lower die of stretching die seat is provided with gas under stretching die
Cylinder（16）, the piston of stretching die lower cylinder by through lower die of stretching die seat stretching die push rod（19）With stretching die liftout circle
Connection；Upper die of stretching die seat（23）It is arranged on upper die of stretching die plate（15）Lower section, the lower section of upper die of stretching die seat sets stretching die
Cavity plate（21）, the upper die of stretching die core being connected with stretching die upper cylinder（22）It is arranged on the center of stretching die cavity plate.
4. tapered shaped can drawing die according to claim 1, it is characterised in that the shaping mould includes shaping mould die shoe
（24）, the center of shaping mould die shoe is provided with shaping mould lower mold core（27）, the periphery of shaping mould lower mold core is provided with shaping mould liftout
Circle（26）, shaping mould lower cylinder is provided with below shaping mould die shoe（37）, the piston of shaping mould lower cylinder by through into
The shaping mould push rod of pattern die shoe（25）It is connected with shaping mould liftout circle；Moulding upper mould seat（30）It is arranged on moulding upper mould
Plate lower section, the lower section of moulding upper mould seat sets shaping mould cavity plate（28）, the moulding upper mould core being connected with shaping mould upper cylinder
（29）It is arranged on the center of shaping mould cavity plate.
5. tapered shaped can drawing die according to claim 1, it is characterised in that the edger includes edger die shoe
（31）, edger die shoe is provided with punch-pin（32）, the periphery around punch-pin is provided with cutoff tool（33）；Edger upper bolster（36）
Edger upper die plate lower section is arranged on, the lower section of edger upper bolster sets edger cavity plate（34）, connect with edger upper cylinder
The edger centring ring for connecing（35）It is arranged on the center of edger cavity plate.
6. tapered shaped can drawing die according to claim 1, it is characterised in that the top surface projection of the cup stamping mould liftout circle
There is the annular convex rib of circular cup stamping mould lower mold core（41）, in the annular convex rib and cup stamping mould liftout circle on the cup stamping mould liftout circle
The distance between lateral edges are equal, and the cup stamping mould liftout circle upper surface on the inside of annular convex rib is wide cyclic structure；Cup stamping mould
The bottom surface of punch-die is provided with annular groove corresponding with annular convex rib（42）, the cross section of the annular groove is trapezoidal, annular
The depth of groove is 0.8 to 1.2 times of tank body material thickness, and the slot bottom width of annular groove is tank body material（43）The 2 of thickness
To 4 times, the width of rebate of annular groove is 5 to 8 times of tank body material thickness, the cross section of the annular convex rib and annular groove
Cross section be adapted.
7. the tapered shaped can drawing die according to claim any one of 1-6, it is characterised in that the cup stamping mould is tied for independent
Structure, stretching die, shaping mould and edger integrated multiple operation progressive die structure and are cut the cup stamping mould, stretching die, shaping mould
Tank body clamping conveyer is provided between the mould of side.
8. the tapered shaped can drawing die according to claim any one of 1-6, it is characterised in that the cup stamping mould, stretching die,
Shaping mould and edger are absolute construction, the cup stamping mould, are provided with tank body clamping between stretching die, shaping mould and edger and pass
Send device.
9. a kind of usage right requires the tapered shaped can stretch forming method of the tapered shaped can drawing die described in 1, it is characterised in that bag
Include following steps：
A. cup stamping step：Tank body material sends into cup stamping mould, the sheet stock needed for cutting tank body stretching, and the edge of fixed sheet stock is simultaneously completed
The first time stretching of sheet stock, the tank body after stretching for the first time highly controls, the 50% to 70% of finished product tank body height, to draw for the first time
Tank body mould taper control after stretching is in the 80% to 120% of finished product tank body taper, the tank body intermediate cross-section product control after stretching for the first time
Make the 90% to 95% of finished product tank body intermediate cross-section product, the flange width of stretching is the 8- of finished product tank body flange width for the first time
12 times, pressure-pad-force is 200-700kPa, and the tank body for completing cup stamping step is sent to stretching die by tank body clamping conveyer；
B. stretching step：Tank body after being stretched to first time carries out second stretching, and the tank body after second stretching is highly controlled
Finished product tank body height 70% to 90% and tank body after stretching more than first time highly, second stretch after tank body taper control
, the 90% to 110% of finished product tank body taper, the tank body intermediate cross-section product control after second stretching is in the middle of finished product tank body for system
The 95% to 100% of cross-sectional area, the tank body for completing stretching step is sent to shaping mould by tank body clamping conveyer；
C. forming step：Tank body after being stretched to second carries out final molding, including tank body enlarging, flange, tank skin reinforcement
And the drawing and forming of tank bottom reinforcement, highly for finished product tank body highly, the tank body taper after shaping is finished product to the tank body after shaping
Tank body taper, the tank body intermediate cross-section product after shaping is finished product tank body intermediate cross-section product, and the tank body for completing forming step leads to
Cross tank body clamping conveyer and be sent to edger；
D. trimming process：Trimming pruning is carried out to the tank body flange part after shaping, the tank body turnup structure after trimming is pruned is expired
The cover of sufficient dual rolling sealing coordinates requirement, and the tank body for completing trimming process clamps conveyer removal edger by tank body.
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| CN201710171376.2A CN106881405B (en) | 2017-03-21 | 2017-03-21 | Tapered shaped can drawing die and stretch forming method |
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|---|---|---|---|
| CN201710171376.2A CN106881405B (en) | 2017-03-21 | 2017-03-21 | Tapered shaped can drawing die and stretch forming method |
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| CN106881405B CN106881405B (en) | 2018-08-24 |
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| CN108421925A (en) * | 2018-02-06 | 2018-08-21 | 台州市通益机械设备有限公司 | Bowl-type tank production line |
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| CN108746339A (en) * | 2018-07-10 | 2018-11-06 | 广州沃福模具有限公司 | A kind of cold stamping method producing soy bean milk making machine lower cover |
| CN108746339B (en) * | 2018-07-10 | 2024-04-26 | 广州沃福模具有限公司 | Cold stamping method for producing lower cover of soymilk machine |
| CN109047509A (en) * | 2018-09-28 | 2018-12-21 | 浙江龙文精密设备股份有限公司 | Bowl-shape tank and its molding die |
| CN109290477A (en) * | 2018-09-28 | 2019-02-01 | 浙江龙文精密设备股份有限公司 | The moulding process of reducing two-piece can body |
| CN109290477B (en) * | 2018-09-28 | 2019-10-18 | 浙江龙文精密设备股份有限公司 | The moulding process of reducing two-piece can body |
| CN109047509B (en) * | 2018-09-28 | 2023-10-31 | 浙江龙文精密设备有限公司 | Bowl-shaped tank and forming die thereof |
| CN110560569B (en) * | 2019-09-26 | 2022-11-11 | 福建和进食品制罐工业有限公司 | Can making die integrating stamping and trimming |
| CN110560569A (en) * | 2019-09-26 | 2019-12-13 | 福建和进食品制罐工业有限公司 | can making die integrating stamping and trimming |
| CN112045086B (en) * | 2020-08-27 | 2022-04-15 | 湛江市联胜制罐包装有限公司 | Method for forming and manufacturing metal can body |
| CN112045086A (en) * | 2020-08-27 | 2020-12-08 | 詹哲品 | Method for forming and manufacturing metal can body |
| CN112893676A (en) * | 2021-01-21 | 2021-06-04 | 四川凯玫克尔机械设备有限公司 | High-flexibility fast-switching laminated iron can production process and equipment |
| CN112935092B (en) * | 2021-01-22 | 2022-09-02 | 苏州三维精密金属制品有限公司 | Mold and method for extruding sharp corner by stretching excircle |
| CN112935092A (en) * | 2021-01-22 | 2021-06-11 | 苏州三维精密金属制品有限公司 | Mold and method for extruding sharp corner by stretching excircle |
| CN112974643A (en) * | 2021-03-11 | 2021-06-18 | 衢州众德精密机械有限公司 | Novel integrated into one piece mould |
| CN114346072A (en) * | 2022-03-17 | 2022-04-15 | 宁波沃特汽车部件有限公司 | Forming system and forming process of automobile support |
| CN115284005A (en) * | 2022-08-17 | 2022-11-04 | 柴洪磊 | Ternary lithium battery shell processing equipment |
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