CN106881405B - Tapered shaped can drawing die and stretch forming method - Google Patents
Tapered shaped can drawing die and stretch forming method Download PDFInfo
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- CN106881405B CN106881405B CN201710171376.2A CN201710171376A CN106881405B CN 106881405 B CN106881405 B CN 106881405B CN 201710171376 A CN201710171376 A CN 201710171376A CN 106881405 B CN106881405 B CN 106881405B
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- mould
- cup stamping
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- 238000000034 method Methods 0.000 title claims abstract description 49
- 238000007493 shaping process Methods 0.000 claims abstract description 76
- 238000000465 moulding Methods 0.000 claims abstract description 66
- 239000000463 material Substances 0.000 claims abstract description 47
- 238000009966 trimming Methods 0.000 claims abstract description 42
- 230000008569 process Effects 0.000 claims abstract description 27
- 230000005540 biological transmission Effects 0.000 claims description 19
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 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
- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 5
- 230000007704 transition Effects 0.000 description 5
- 238000003825 pressing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 210000002435 tendon Anatomy 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 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
- 210000003205 muscle Anatomy 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000000725 suspension Substances 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 methods, the mold includes the cup stamping mould stretched for the slice blanking of tank body material and first time, second of stretching die stretched is carried out for the tank body after being stretched to first time, the shaping mould of final molding is carried out for the tank body after being stretched to second and the edger for carrying out trimming trimming to tank body flange after molding part, by using the multiple working procedure molding of equal draw ratios, it is stepped up stretching height, being basically unchanged of cross-sectional area of stretching or variation are seldom, keep the stretching Curvature varying of subsequent handling in forming process essentially identical, control material flow tendency, to solve the Instability wrinkling and splintering problem that are susceptible in taper two-piece can forming process, with very high practical value.
Description
Technical field
The present invention relates to a kind of cold punching die technical fields, more particularly, to a kind of tapered shaped can drawing die and are 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 at tank
Thickness is constantly thinned, and under the premise of ensuring that food cans items fundamental performance parameter is met the requirements, reinforcement material certainly will be needed
Hardness.During cone tank drawing and forming, inevitably there is hanging deformed region, be extremely easy to go out in forming process
Existing Instability wrinkling, or due to stress concentration, frictional force is bigger than normal and leads to tank body drawing.Therefore high rigidity, low thickness,
Under the restriction of low ductile material, traditional one-off drawing technique makes the molding difficulty of pyramidal food tank greatly increase.Change
The moulding process of food cans, the transformation of multi-drawing is stretched to from single also seems particularly significant.Many tapered shaped cans start at present
Using twice, even more multiple drawing and forming mode three times, to meet the requirement of stretcher strain coefficient, generally use by greatly to
Small drawing process.By taking current most common drawing and forming three times as an example, when using descending pulling method, due to local press surface
Product is limited, and the molding of third procedure suspension area domain occurs in the presence of conversion conical surface molding is faced directly.Tank body the third step easily occurs
Tank rupture, and Instability wrinkling phenomenon is all generated at tank body knuckle；This is not yet retrieved in existing open file to ask
The solution of topic.
Invention content
Easily occur tank rupture, and tank body transition circle when it is an object of the invention to solve the tapered shaped can punching press of the prior art
Instability wrinkling phenomenon is led to the problem of at angle, a kind of tapered shaped can drawing die and stretch forming method are provided, and is ensureing tapered shaped can
Under the premise of performance requirements, Instability wrinkling at tank rupture and knuckle can be effectively solved the problems, such as.
The specific technical solution that the present invention uses to solve above-mentioned technical problem for：A kind of tapered shaped can drawing die, including：
Cup stamping mould, for tank body material slice blanking and for the first time stretch, for the first time stretch after tank body height be at
The 50% to 70% of product tank body height, the tank body taper after stretching for the first time are the 80% to 120% of finished product tank body taper, are drawn 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, and the flange width stretched for the first time is
8-12 times of finished product tank body flange width.
Stretching die is stretched for carrying out second to the tank body after first time stretching, the tank body height after second of stretching
For finished product tank body height 70% to 90% and more than the tank body height after stretching for the first time, second stretch after tank body taper be
The 90% to 110% of finished product tank body taper, the tank body intermediate cross-section product after second of stretching are that finished product tank body intermediate cross-section accumulates
95% to 100%.
Shaping mould carries out final molding for the tank body after being stretched to second, including tank body flaring, flange, tank skin add
The molding of strengthening tendons and tank bottom reinforcing rib, tank body height after molding are finished product tank body height, and tank body taper after molding is finished product
Tank body taper, tank body intermediate cross-section product after molding are that finished product tank body intermediate cross-section accumulates.
Edger, for carrying out trimming trimming, the tank body flange knot after trimming trimming to tank body flange after molding part
The cover cooperation that structure meets dual rolling sealing requires.
Technical scheme of the present invention shares fourth officer mold, i.e. cup stamping mould, stretching die, shaping mould and edger.For high hard
It spends, the stretching floor space of the molding of the tapered shaped can of low ductile material, preceding three process is essentially identical, i.e., is stretched by using equal
The multiple working procedure of ratio is molded, and is stepped up stretching height, being basically unchanged of cross-sectional area of stretching or variation are seldom, make to be molded
The stretching Curvature varying of subsequent handling is essentially identical in journey, material flow tendency is controlled, to solve taper two panels jug forming mistake
The Instability wrinkling and splintering problem being susceptible in journey.
The present invention eliminates knuckle and is molded Instability wrinkling phenomenon, while taking into account mold molding by increasing flanging area
Conversion station orientation problem between process, using etc. draw ratios be stepped up workpiece height small area taper drawing be molded.Root
According to principle is stretched, which reduces mold surface roughness in the knuckle for increasing cavity plate, increases material lubrication, together
When ensure either simplex sequence stretch height it is not excessively 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 lower die holder in cup stamping mould lower template, punching
The center of cup mould lower die holder is equipped with cup stamping mould lower mold core, and cup stamping mould lower die holder is solid equipped with the cup stamping mould around cup stamping mould lower mold core
Cup stamping mould cavity plate is set in reservation, cup stamping model fixing seat, and the lower section of cup stamping mould lower die holder is equipped with cup stamping mould lower cylinder, under cup stamping mould
The piston of cylinder passes through cup stamping mould mandril across cup stamping mould lower die holder and the cup stamping mould liftout being arranged on the inside of cup stamping mould cavity plate
Circle connection, cup stamping mould upper die holder are arranged below cup stamping mould cope plate, and cup stamping mould punch-die is arranged in the lower section of cup stamping mould upper die holder,
The cup stamping mould upper mold core being connect with cup stamping mould upper cylinder is arranged in the center of cup stamping mould punch-die, is set in outside cup stamping mould punch-die
The cup stamping mould discharging ring in week is connected to by spring on cup stamping mould upper die holder.
Cup stamping mould belongs to blanking forming compound die, including lower template, cylinder, lower die holder, fixed seat, mandril, cavity plate, liftout
Circle, lower mold core, discharging ring, punch-die, upper mold core, upper die holder and cope plate etc..Lower template is the support of entire mold, is mold
Bottom plate, lower die holder is for fixing lower die, and cope plate is the fixed bottom plate of upper mold, and upper die holder is for fixing upper mold；Cylinder provides
Pressure-pad-force forms material pressing device together with mandril, liftout circle and realizes flanging function, enters the big ditty of air pressure by adjusting cylinder
Whole pressure-pad-force；Fixed seat main function is fixed cavity plate, adjustment cavity plate blanking level and provides molding space, cavity plate and convex
Cavity plate coordinates, and under the action of power source, is punched sheet stock, realizes that blanking function, discharging ring release waste material, waste material circle made not to be sleeved on
On punch-die；After the completion of blanking action, punch-die continues traveling downwardly under the action of power source, interacts together with lower mold core,
Plate material forming is stretched, last upper mold continues to go upward to top dead-centre under power effect, and lower die is restored, and a punching course is completed.
Preferably, stretching die includes lower die of stretching die plate and the lower die of stretching die seat on lower die of stretching die plate, draw
The center for stretching mould lower die holder is equipped with lower die of stretching die core, and the periphery of lower die of stretching die core is equipped with stretching die liftout circle, under stretching die
The lower section of die holder is equipped with stretching die lower cylinder, and the piston of stretching die lower cylinder passes through the stretching die mandril across lower die of stretching die seat
It is connect with stretching die liftout circle；Upper die of stretching die seat is arranged below upper die of stretching die plate, and the lower section of upper die of stretching die seat is arranged
Stretching die cavity plate, the upper die of stretching die core being connect with stretching die upper cylinder are arranged in the center of stretching die cavity plate.
Preferably, shaping mould includes shaping mould lower die holder, the center of shaping mould lower die holder is equipped with shaping mould lower mold core, at
The periphery of pattern lower mold core is equipped with shaping mould liftout circle, and the lower section of shaping mould lower die holder is equipped with shaping mould lower cylinder, under shaping mould
The piston of cylinder is connect by the shaping mould mandril across shaping mould lower die holder with shaping mould liftout circle；Moulding upper mould seat is arranged
Below moulding upper mould plate, shaping mould cavity plate, the molding being connect with shaping mould upper cylinder is arranged in the lower section of moulding upper mould seat
Mould upper mold core is arranged in the center of shaping mould cavity plate.
Preferably, edger includes edger lower die holder, edger lower die holder is equipped with punch-pin, surrounds the periphery of punch-pin
Equipped with cutoff tool；Edger upper die holder is arranged below edger cope plate, and the lower section setting edger of edger upper die holder is recessed
Mould, the edger locating ring being connect with edger upper cylinder are arranged in 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
Equal, the cup stamping mould on the inside of annular convex rib in the distance between annular convex rib on mould liftout circle and cup stamping mould liftout circle inside edge
Liftout circle upper surface is wide cyclic structure, between the annular center line and cup stamping mould liftout circle inside edge of annular convex rib
Distance is 5-15 millimeters；The bottom surface of cup stamping mould punch-die is equipped 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 are 5 to 8 times of tank body material thickness, the cross of the annular convex rib
Section is adapted with the cross section of annular groove.
Tank body material becomes three-dimensional box part during drawing and forming, by sheet stock, at the edge of punch-pin and cavity plate
The extruding force of pulling force in the horizontal direction and vertical direction is deposited in part, has corrugated trend so as to cause tank body material.Work as mold
Pressure-pad-force it is inadequate when, tank body edge of materials easy tos produce Instability wrinkling, and can improve this phenomenon by improving pressure-pad-force.
But product competitiveness is improved, the feelings of the tank body material of high rigidity, low ductility are used in order to reduce production cost in manufacturer
Under condition, if using traditional plane edge-pressing mode, while pressure-pad-force is continuously improved and is 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 stretches, the plane binder that outermost is traditional is stretched, during molding between material inflow punch-pin and cavity plate,
Need the transition by annular convex rib and annular groove, tank body material that can slow down becoming for Instability wrinkling under the action of its resistance
Gesture reduces or eliminates corrugated purpose to reach.The cross section for reasonably selecting annular groove and its annular convex rib of 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 edger are integrated multi-process progressive die knot
Structure is equipped with tank body and transmission device is clamped between the cup stamping mould, stretching die, shaping mould and edger.By stretching die, shaping mould and
Edger becomes integrated multi-process progressive die structure, can use the same power source, reduce mould volume, simplify work
Skill.It stretches at this time, molding and trimming belong to step-feeding punch-forming mold, including mould bases, stretching die, shaping mould and edger.
Mould bases includes mainly lower template, cope plate, cylinder etc., is the architecture of entire mold.Stretching die mainly include lower mold core, under
Die holder, mandril, liftout circle, cavity plate, upper mold core, upper die holder etc..Shaping moudle structure function is similar with stretching die, includes mainly lower die
Seat, mandril, liftout circle, lower mold core, cavity plate, upper mold core, upper die holder etc..Edger mainly include lower die holder, punch-pin, cutoff tool,
Cavity plate, locating ring, upper die holder etc..Its operation logic is as follows：Under the action of power source, cope plate drives the upper mold of three molds
Move downward, stretching process is completed in the cavity plate of stretching die and lower mold core effect, cavity plate and the lower mold core effect of shaping mould complete at
Type process, the locating ring of edger is to for deburring product orientation, then cavity plate continues to move downward, and completes to repair with punch-pin cooperation
Downward dead-centre motion is continued on side, and cutoff tool cuts off waste material, by after bottom dead center, cope plate drives the upper mold of three molds upward
Top dead-centre is moved to, stretching, molding and trimming process are completed.
Alternatively, cup stamping mould, stretching die, shaping mould and edger are absolute construction, the cup stamping
It is equipped with tank body between mould, stretching die, shaping mould and edger, transmission device is clamped.The stretching die, shaping mould and trimming of this programme
Mould is independently arranged, and need to use power source, operation principle and aforementioned integral structure similar respectively.
The tapered shaped can stretch forming method of aforementioned tapered shaped can drawing die, includes the following steps：
A. cup stamping step：Tank body material is sent into cup stamping mould, cuts tank body and stretches required sheet stock, the edge of fixed sheet stock is simultaneously
The first time for completing sheet stock stretches, and the tank body height after stretching for the first time is controlled the 50% to 70% of finished product tank body height（Work as
When the height of finished product tank body is 50mm, the tank body height after stretching for the first time is controlled in 25mm-35mm）, after stretching for the first time
Tank body 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, after stretching for the first time
Tank body mould taper control at 4 degree to 6 degree）, tank body intermediate cross-section product control cross among finished product tank body after stretching for the first time
The 90% to 95% of sectional area（I.e. when the intermediate cross-section of finished product tank body product is 100 square centimeters, tank body after stretching for the first time
Intermediate cross-section product control is at 90 square centimeters to 95 square centimeters）, the flange width stretched for the first time is finished product tank body flange
8-12 times of width, pressure-pad-force 200-700kPa, the tank body for completing cup stamping step are sent to by tank body clamping transmission device
Stretching die.
B. stretching step：Second is carried out to the tank body after first time stretching to stretch, the tank body height after second of stretching
Tank body height after controlling 70% to 90% in finished product tank body height and being stretched more than first time, the tank body cone after stretching for the second time
Tank body intermediate cross-section product control of the degree control after the 90% to 110% of finished product tank body taper, second of stretching is in finished product tank body
The 95% to 100% of intermediate cross-section product, the tank body for completing stretching step are sent to shaping mould by tank body clamping transmission device.
C. forming step, the tank body after being stretched to second carry out final molding, including tank body flaring, flange, tank skin add
The drawing and forming of strengthening tendons and tank bottom reinforcing rib, the tank body height after forming step are finished product tank body height, the tank after forming step
Body taper is finished product tank body taper；Tank body intermediate cross-section product after forming step is that finished product tank body intermediate cross-section accumulates, and is completed
The tank body of forming step is clamped transmission device by tank body and is sent to edger.
D. trimming process carries out trimming trimming, the tank body flange knot after trimming trimming to tank body flange after molding part
The cover cooperation that structure meets dual rolling sealing requires, and transmission device removal trimming is clamped by tank body in the tank body for completing trimming process
Mould.
The method of the present invention is stretched for high rigidity, the molding of the pyramidal food tank of low ductile material by using waiting
The multiple working procedure of ratio is molded, and is stepped up stretching height, the basic cross-sectional area for keeping stretching is constant or variation is less, makes molding
The stretching Curvature varying of subsequent handling is essentially identical in the process, controls material flow tendency, solves taper two-piece can forming process
The Instability wrinkling of middle appearance and the splintering problem being clear to.The molding of tank body relies primarily on the flowing of material, due to being molded three times
Cross section size it is identical, cause cup stamping process need consider in the case where drawing coefficient is small, how preferably to solve material
The problem of flowing.Pulling force and the angle of material flow direction are small in the face of off-chip material, with the increase of press depth, tank skin with
Tank skin is by the power for being parallel to pressing direction at the fillet of flange boundary, and the material of flange is by the power perpendicular to pressing direction, and two
Material at person flows through fillet linking.Ensure that the mobility of the material of flange is unaffected.Cup stamping process is to ensure
Material flowability, emphasis are 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 and cup stamping process are essentially identical, increase on the basis of cup stamping process and stretch height
Degree.The mold of molding procedure is to meet product feature molding, finally trims remaining side, completes entire formed product.
The forming step of the present invention includes the molding of can body transition structure, and in addition statement mold in detail is not working the present invention
The tank body clamping transmission device used in the process, the contents of the section referring to applicant's earlier application " reciprocating clamping transmission fills
It sets "（Publication No. CN106144436A）.Meanwhile the present invention passes through to tank structure（Such as height, cross-sectional area）Restriction
Corresponding mould structure is stated, this is to be appreciated that completely to one skilled in the art.
The beneficial effects of the invention are as follows：Easily there is tank body in it when efficiently solving the tapered shaped can punching press of the prior art broken
It splits, and leads to the problem of Instability wrinkling phenomenon 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 under the premise of ensureing tapered shaped can performance requirements
The problem of, there is very high practical value.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of tapered shaped can drawing die cup stamping mould of the present invention；
Fig. 2 is a kind of group of structural schematic diagram 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 process 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 process of the present invention；
Fig. 7 is a kind of fit structure schematic diagram of its liftout circle and punch-die when cup stamping die worker of the present invention makees, and is shown in figure
Annular convex rib, annular groove and tank body material.
In figure：1. cup stamping mould lower template, 2. cup stamping mould lower cylinders, 3. cup stamping mould lower die holders, 4. cup stamping model fixing seats, 5. punchings
Cup mould mandril, 6. cup stamping mould cavity plates, 7. cup stamping mould liftout circles, 8. cup stamping mould lower mold cores, 9. cup stamping mould discharging rings, 10. cup stamping moulds
Punch-die, 11. cup stamping mould upper mold cores, 12. cup stamping mould upper die holders, 13. cup stamping mould cope plates, 14 lower die of stretching die plates, 15. draw
Stretch mould cope plate, 16. stretching die lower cylinders, 17. lower die of stretching die cores, 18. lower die of stretching die seats, 19. stretching die mandrils,
20. stretching die liftout circle, 21. stretching die cavity plates, 22. upper die of stretching die cores, 23. upper die of stretching die seats, 24. shaping mould lower dies
Seat, 25. shaping mould mandrils, 26. shaping mould liftout circles, 27. shaping mould lower mold cores, 28. shaping mould cavity plates, 29. moulding upper moulds
Core, 30. moulding upper mould seats, 31. edger lower die holders, 32. punch-pin, 33. cutoff tools, 34. edger cavity plates, 35. trimmings
Mould locating ring, 36. edger upper die holders, 37. shaping mould lower cylinders, 38. springs, 39. tank bodies, 40. flange, 41. convex annulars
Muscle, 42. annular grooves, 43. tank body materials.
Specific implementation mode
The specific implementation mode of the present invention is described further below by way of examples and with reference to the accompanying drawings.
Embodiment 1
In embodiment 1 as shown in Figure 1, a kind of tapered shaped can drawing die includes the slice blanking for tank body material
And the cup stamping mould stretched for the first time（See Fig. 1）, the cup stamping mould includes cup stamping mould lower template 1 and in cup stamping mould lower template
The center of cup stamping mould lower die holder 3, cup stamping mould lower die holder is equipped with cup stamping mould lower mold core 8, and cup stamping mould lower die holder is equipped with around cup stamping
Setting cup stamping mould cavity plate 6 on the cup stamping model fixing seat 4 of mould lower mold core, cup stamping model fixing seat, the lower section of cup stamping mould lower die holder is equipped with
Cup stamping mould lower cylinder 2, the piston of cup stamping mould lower cylinder by cup stamping mould mandril 5 across cup stamping mould lower die holder be arranged in cup stamping
Cup stamping mould liftout circle 7 on the inside of mould cavity plate connects, and cup stamping mould upper die holder 12 is arranged below cup stamping mould cope plate 13, on cup stamping mould
The lower section setting cup stamping mould punch-die 10 of die holder, the setting of cup stamping mould upper mold core 11 being connect with cup stamping mould upper cylinder are convex in cup stamping mould
The center of cavity plate, the cup stamping mould discharging ring 9 for being set in cup stamping mould punch-die periphery are connected to cup stamping mould upper die holder by spring 38
On.
39 height of tank body after being stretched for the first time through cup stamping mould 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 40 width of finished product tank body flange（The present embodiment is 10 times, sees Fig. 3）.
Stretching die（See Fig. 2）Second is carried out for the tank body after stretching first time to stretch, the stretching die includes drawing
Mould lower template 14 and the lower die of stretching die seat 18 on lower die of stretching die plate are stretched, the center of lower die of stretching die seat is equipped with stretching die
The periphery of lower mold core 17, lower die of stretching die core is equipped with stretching die liftout circle 20, and the lower section of lower die of stretching die seat is equipped under stretching die
The piston of cylinder 16, stretching die lower cylinder is connected by the stretching die mandril 19 across lower die of stretching die seat with stretching die liftout circle
It connects；Upper die of stretching die seat 23 is arranged below upper die of stretching die plate 15, the lower section setting stretching die cavity plate 21 of upper die of stretching die seat,
The upper die of stretching die core 22 being connect with stretching die upper cylinder is arranged in the center of stretching die cavity plate.
It is the 70% to 90% of finished product tank body height by the tank body height after second of stretching of stretching die and is more than for the first time
Tank body height after stretching is stretching on the basis of stretching for the first time and carries out, is increased in height for the second time（This implementation
Example is 70%）, the tank body taper after second of stretching is the 90% to 110% of finished product tank body taper（The present embodiment is 90%）, second
Tank body intermediate cross-section product after secondary stretching controls 95% to 100% accumulated in finished product tank body intermediate cross-section（The present embodiment is
95%, see Fig. 4）；
Tank body after shaping mould is used to stretch second carries out final molding（See Fig. 2）, including tank body flaring, flange,
The molding of the arc transition structure of tank skin reinforcing rib, tank bottom reinforcing rib and each position of tank body.The shaping mould includes shaping mould
The center of lower die holder 24, shaping mould lower die holder is equipped with shaping mould lower mold core 27, and the periphery of shaping mould lower mold core is equipped with shaping mould top
The lower section of feed ring 26, shaping mould lower die holder is equipped with shaping mould lower cylinder 37, and the piston of shaping mould lower cylinder is by passing through shaping mould
The shaping mould mandril 25 of lower die holder is connect with shaping mould liftout circle；Moulding upper mould seat 30 is arranged below moulding upper mould plate,
The lower section setting shaping mould cavity plate 28 of moulding upper mould seat, the moulding upper mould core 29 connect with shaping mould upper cylinder be arranged at
The center of pattern cavity plate.Tank body height after molding is finished product tank body height, and tank body taper after molding is finished product tank body taper,
Tank body intermediate cross-section product after molding is that finished product tank body intermediate cross-section accumulates（See Fig. 5）.
Edger is used to carry out trimming trimming to tank body flange after molding part（See Fig. 2）, the tank body after trimming trimming
The cover cooperation that turnup structure meets dual rolling sealing requires（See Fig. 6）.Edger includes edger lower die holder 31, edger lower die
Seat is equipped with punch-pin 32, and cutoff tool 33 is equipped with around the periphery of punch-pin；Edger upper die holder 36 is arranged under edger cope plate
Side, the lower section setting edger cavity plate 34 of edger upper die holder, the edger locating ring 35 being connect with edger upper cylinder is arranged
In the center of edger cavity plate.
The cup stamping mould of the present embodiment is absolute construction, and stretching die, shaping mould and edger are integrated multi-process progressive die
The cope plate of structure, shaping mould and trimming and the cope plate of stretching die are wholely set, the lower template and stretching of shaping mould and trimming
The lower template of mould is wholely set, and using the same power source, three molds move synchronously, cup stamping mould, stretching die, shaping mould and trimming
It is equipped with tank body between mould, transmission device is clamped, is automatically delivered for the tank body between mold.
The tapered shaped can stretch forming method of the tapered shaped can drawing die of the present embodiment, includes the following steps：
A. cup stamping step：Tank body material is sent into cup stamping mould, cuts tank body and stretches required sheet stock, the edge of fixed sheet stock is simultaneously
The first time for completing sheet stock stretches, and the tank body height control after stretching for the first time stretches for the first time the 50% of finished product tank body height
Tank body mould taper control afterwards is the 80% of finished product tank body taper, and the tank body intermediate cross-section product control after stretching for the first time is in finished product
The 90% of tank body intermediate cross-section product, the flange width stretched for the first time is 10 times of finished product tank body flange width, and pressure-pad-force is
400kPa, the tank body for completing cup stamping step are sent to stretching die by tank body clamping transmission device.
B. stretching step：Second is carried out to the tank body after first time stretching to stretch, the tank body height after second of stretching
Tank body mould taper control of the control after the 70% of finished product tank body height, second of stretching is the 90% of finished product tank body taper, second
Tank body intermediate cross-section product after stretching controls 95% accumulated in finished product tank body intermediate cross-section, and the tank body for completing stretching step is logical
It crosses tank body clamping transmission device and is sent to shaping mould.
C. forming step, the tank body after being stretched to second carry out final molding, including tank body flaring, flange, tank skin add
The drawing and forming of strengthening tendons and tank bottom reinforcing rib, tank body height after molding are finished product tank body height, and tank body taper after molding is
Finished product tank body taper, tank body intermediate cross-section product after molding are that finished product tank body intermediate cross-section accumulates, and complete the tank of forming step
Body is clamped transmission device by tank body and is sent to edger.
D. trimming process carries out trimming trimming, the tank body flange knot after trimming trimming to tank body flange after molding part
The cover cooperation that structure meets dual rolling sealing requires, and transmission device removal trimming is clamped by tank body in the tank body for completing trimming process
Mould.
Embodiment 2
Cup stamping mould, stretching die, shaping mould and the edger of embodiment 2 are absolute construction, cup stamping mould, stretching die, molding
It is equipped with tank body between mould and edger, transmission device is clamped.The top surface of cup stamping mould liftout circle is convexly equipped with around cup stamping mould lower mold core
Annular convex rib 41（See Fig. 7）, between the annular convex rib and cup stamping mould liftout circle inside edge on the cup stamping mould liftout circle away from
From equal, 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
The distance between cup stamping mould liftout circle inside edge is 5-15 millimeters（The present embodiment is 10 millimeters）；The bottom of cup stamping mould punch-die
Face is equipped with annular groove 42 corresponding with annular convex rib, and the cross section of the annular groove is trapezoidal, and the depth of annular groove is
1.1 times of tank body material thickness, the slot bottom width of annular groove are 3.5 times of 43 thickness of tank body material, the notch of annular groove
Width is 6.5 times of tank body material thickness, and the cross section of the annular convex rib is adapted with the cross section of annular groove.This implementation
Stretching die, shaping mould and the edger of example are independently arranged mold, need to use power source respectively, remaining and embodiment 1 are identical.
In addition to the implementation, within the scope of the claims of the present invention and the specification, skill of the invention
Art feature or technical data can be reselected and be combined, and to constitute new embodiment, these present invention are not detailed
The embodiment carefully described is those skilled in the art can realize easily without creative work, therefore these are not detailed
The embodiment of description also should be regarded as specific embodiments of the present invention and within protection scope of the present invention.
Claims (9)
1. a kind of tapered shaped can drawing die, which is characterized in that including：
Cup stamping mould, the slice blanking for tank body material and stretching for the first time, the tank body height after stretching for the first time are 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 be finished product tank body intermediate cross-section product 90% to 95%, for the first time stretch flange width be finished product
8-12 times of tank body flange width；
Stretching die carries out second for the tank body after being stretched to first time and stretches, the tank body height after stretching for second be at
Product tank body height 70% to 90% and more than the tank body height after stretching for the first time, second stretch after tank body taper be finished product
The 90% to 110% of tank body taper, the tank body intermediate cross-section product after second of stretching are the 95% of finished product tank body intermediate cross-section product
To 100%；
Shaping mould carries out final molding, including tank body flaring, flange, tank skin reinforcing rib for the tank body after being stretched to second
And the molding of tank bottom reinforcing rib, tank body height after molding are finished product tank body height, tank body taper after molding is finished product tank body
Taper, tank body intermediate cross-section product after molding are that finished product tank body intermediate cross-section accumulates；
Edger, for carrying out trimming trimming to tank body flange after molding part, the tank body turnup structure after trimming trimming is full
The cover cooperation of sufficient dual rolling sealing requires.
2. tapered shaped can drawing die according to claim 1, which is characterized in that the cup stamping mould includes cup stamping mould lower template
（1）And the cup stamping mould lower die holder in cup stamping mould lower template（3）, the center of cup stamping mould lower die holder is equipped with cup stamping mould lower mold core
（8）, cup stamping mould lower die holder is equipped with the cup stamping model fixing seat around cup stamping mould lower mold core（4）, punching is set on cup stamping model fixing seat
Cup mould cavity plate（6）, the lower section of cup stamping mould lower die holder is equipped with cup stamping mould lower cylinder（2）, the piston of cup stamping mould lower cylinder is by passing through
The cup stamping mould mandril of cup stamping mould lower die holder（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 die holder（12）It is arranged in cup stamping mould cope plate（13）Cup stamping mould punch-die is arranged in the lower section of lower section, cup stamping mould upper die holder（10）,
The cup stamping mould upper mold core being connect with cup stamping mould upper cylinder（11）It is arranged in 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（9）Pass through spring（38）It is connected on cup stamping mould upper die holder.
3. tapered shaped can drawing die according to claim 1, which is characterized 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 equipped with lower die of stretching die core
（17）, the periphery of lower die of stretching die core is equipped with stretching die liftout circle（20）, the lower section of lower die of stretching die seat is equipped with gas under stretching die
Cylinder（16）, the piston of stretching die lower cylinder passes through the stretching die mandril across lower die of stretching die seat（19）Connect with stretching die liftout circle
It connects；Upper die of stretching die seat（23）It is arranged in upper die of stretching die plate（15）The lower section setting stretching die of lower section, upper die of stretching die seat is recessed
Mould（21）, the upper die of stretching die core that is connect with stretching die upper cylinder（22）It is arranged in the center of stretching die cavity plate.
4. tapered shaped can drawing die according to claim 1, which is characterized in that the shaping mould includes shaping mould lower die holder
（24）, the center of shaping mould lower die holder is equipped with shaping mould lower mold core（27）, the periphery of shaping mould lower mold core is equipped with shaping mould liftout
Circle（26）, the lower section of shaping mould lower die holder is equipped with shaping mould lower cylinder（37）, the piston of shaping mould lower cylinder is by passing through molding
The shaping mould mandril of mould lower die holder（25）It is connect with shaping mould liftout circle；Moulding upper mould seat（30）It is arranged in moulding upper mould plate
Shaping mould cavity plate is arranged in the lower section of lower section, moulding upper mould seat（28）, the moulding upper mould core that is connect with shaping mould upper cylinder
（29）It is arranged in the center of shaping mould cavity plate.
5. tapered shaped can drawing die according to claim 1, which is characterized in that the edger includes edger lower die holder
（31）, edger lower die holder is equipped with punch-pin（32）, cutoff tool is equipped with around the periphery of punch-pin（33）；Edger upper die holder（36）
It is arranged below edger cope plate, edger cavity plate is arranged in the lower section of edger upper die holder（34）, connect with edger upper cylinder
The edger locating ring connect（35）It is arranged in the center of edger cavity plate.
6. tapered shaped can drawing die according to claim 2, which is characterized 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）, annular convex rib on the cup stamping mould liftout circle in 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 equipped 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. according to claim 1-6 any one of them tapered shaped can drawing dies, which is characterized in that the cup stamping mould is independent ties
Structure, stretching die, shaping mould and edger are integrated multi-process progressive die structure, the cup stamping mould, stretching die, shaping mould and are cut
It is equipped with tank body between the mould of side, transmission device is clamped.
8. according to claim 1-6 any one of them tapered shaped can drawing dies, which is characterized in that the cup stamping mould, stretching die,
Shaping mould and edger are absolute construction, and tank body clamping is equipped between the cup stamping mould, stretching die, shaping mould and edger and is passed
Send device.
9. a kind of tapered shaped can stretch forming method using tapered shaped can drawing die described in claim 1, it is characterised in that packet
Include following steps：
A. cup stamping step：Tank body material is sent into cup stamping mould, cuts tank body and stretches required sheet stock, fixes the edge of sheet stock and completion
The first time of sheet stock stretches, and the tank body height control after stretching for the first time is drawn for the first time the 50% to 70% of finished product tank body height
Tank body mould taper control after stretching is the 80% to 120% of finished product tank body taper, the tank body intermediate cross-section product control after stretching for the first time
90% to 95% accumulated in finished product tank body intermediate cross-section is made, the flange width stretched for the first time is the 8- of finished product tank body flange width
12 times, pressure-pad-force 200-700kPa, the tank body for completing cup stamping step is sent to stretching die by tank body clamping transmission device；
B. stretching step：Second is carried out to the tank body after first time stretching to stretch, the tank body height control after second of stretching
Finished product tank body height 70% to 90% and more than the tank body height after stretching for the first time, second stretch after tank body taper control
Tank body intermediate cross-section product control of the system after the 90% to 110% of finished product tank body taper, second of stretching is among finished product tank body
The 95% to 100% of cross-sectional area, the tank body for completing stretching step are sent to shaping mould by tank body clamping transmission device；
C. forming step：Tank body after being stretched to second carries out final molding, including tank body flaring, flange, tank skin reinforcing rib
And the drawing and forming of tank bottom reinforcing rib, tank body height after molding are finished product tank body height, tank body taper after molding is finished product
Tank body taper, tank body intermediate cross-section product after molding are that finished product tank body intermediate cross-section accumulates, and the tank body for completing forming step is logical
It crosses tank body clamping transmission device and is sent to edger；
D. trimming process：Trimming trimming is carried out to tank body flange after molding part, the tank body turnup structure after trimming trimming is full
The cover cooperation of sufficient dual rolling sealing requires, and transmission device removal edger is clamped by tank body in the tank body for completing trimming process.
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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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| 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 |
| 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 |
| 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 |
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| CN114346072B (en) * | 2022-03-17 | 2022-06-28 | 宁波沃特汽车部件有限公司 | Forming system and forming process of automobile support |
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Denomination of invention: Drawing die and drawing forming method for conical tank Effective date of registration: 20201222 Granted publication date: 20180824 Pledgee: Yiwu Branch of China Construction Bank Co.,Ltd. Pledgor: YIWU EASY OPEN END INDUSTRY Corp. Registration number: Y2020330001251 |
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Denomination of invention: Drawing die and drawing forming method of conical tank Effective date of registration: 20220112 Granted publication date: 20180824 Pledgee: Yiwu Branch of China Construction Bank Co.,Ltd. Pledgor: YIWU EASY OPEN END INDUSTRY Corp. Registration number: Y2022330000064 |
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Denomination of invention: Cone shaped can stretching mold and stretching forming method Effective date of registration: 20231022 Granted publication date: 20180824 Pledgee: Yiwu Branch of China Construction Bank Co.,Ltd. Pledgor: YIWU EASY OPEN END INDUSTRY Corp. Registration number: Y2023330002458 |