CN106424192A - Cold extrusion mold for ball stud - Google Patents
Cold extrusion mold for ball stud Download PDFInfo
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- CN106424192A CN106424192A CN201611129719.0A CN201611129719A CN106424192A CN 106424192 A CN106424192 A CN 106424192A CN 201611129719 A CN201611129719 A CN 201611129719A CN 106424192 A CN106424192 A CN 106424192A
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- Prior art keywords
- split block
- hole
- push plate
- angle
- guide pillar
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels
- B21C35/02—Removing or drawing-off work
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Road Signs Or Road Markings (AREA)
Abstract
The invention discloses a cold extrusion mold for a ball stud. The cold extrusion mold comprises an upper mold (1), a lower mold (2), an upper mold sleeve (3), a lower mold sleeve (4) and a product (6), wherein the upper mold (1) is fixed in the upper mold sleeve (3); the lower mold (2) is fixed in the lower mold sleeve (4); a lower mold base plate (5) is arranged in the lower mold sleeve (4); the lower mold base plate (5) is located at the bottom of the lower mold (2); the product (6) comprises a bulb (7), a neck part (8) and a rod part (9); a first bulge (10) and a second bulge (11) are arranged on the rod part (9); the first bulge (10) is located between the neck part (8) and the second bulge (11). The cold extrusion mold for the ball stud, provided by the invention, has the advantages of less machining allowance of the ball stud, higher strength, lower cost and convenience in realization.
Description
Technical field
The present invention relates to a kind of technical field of mold is and in particular to a kind of Ball pin cold extrusion mold.
Background technology
The today increasingly welcome by people in automobile, automobile production producer increasingly pay attention to automobile product quality and
Manufacturing cost.Therefore, how improve product quality, the manufacturing cost reducing automobile has become Ge great automobile main frame maker and automobile zero
Part enterprise problem in the urgent need to address.As the connecting piece of automobile hanging, steering and stabilisation systemss, ball joint assembly
Effect can not be ignored, and its reason is that each automobile is required for realizing specific function using substantial amounts of ball joint assembly.Often
The ball joint assembly of rule mainly includes ball stud and ball cup, wherein, because the sphere diameter of ball stud is bigger than bar portion size, general
The raw material usage that ball stud processing technology needs is also relatively many, and the manufacturing cost so as to make ball stud is higher；
Secondly because cutting output is larger, ball stud cervical region counter-bending machine anti-shear performance is also led to reduce.In general, ball stud includes
Bulb, cervical region and club, club is provided with two annular protrusions, the groove being sized between two annular protrusions,
Part between the annular protrusion closely started and bulb is cervical region, the diameter of cervical region from one end of nearly bulb to annular protrusion one
End is incremented by, general production this ball stud first cold extrusion shaped bulb and club, club forms two sections, one section of diameter of nearly bulb
More than away from one section of bulb of diameter, then with lathe, one section of the nearly bulb of club is carried out with turning and forms ball neck, processing is remaining
Amount is big, and waste of raw materials is serious, and the bonding strength between bulb and ball neck is more fragile, and reduces ball stud bending strength
And shear strength, the solution of domestic and international problems mainly passes through three axial compressive force Combined extrusion molding, and it is crowded to realize cervical region
Molded, the major defect of this mode of production is that energy consumption is higher, and efficiency is slower；Next to that by from the higher material of intensity
To process ball stud, the briquetting pressure that this mode needs is bigger, and the consumed resource of the string such as follow-up turning processing
More.Although can solve the problems, such as in intensity, Cost Problems are also without being resolved, and also improve manufacturing cost,
According to prior art, State Intellectual Property Office website discloses a kind of ball stud cold extrusion die, using Huff die to semi-finished product plus
Work forms, and this is to design for the ball pin of given shape, and cervical region is longitudinal section is rectangle, is only squeeze bulb pin neck
Portion, Huff die can the smoothly demoulding, the groove for the ball stud having two annular protrusions, between cervical region and two annular protrusions
It is required for carrying out cold extrusion, due to there being annular protrusion between cervical region and groove, cannot be carried out the demoulding using half_split block, be difficult reality
Existing.
Content of the invention
The technical problem to be solved is：Overcome the defect of above prior art, provide one kind can make ball stud
The ball stud cold extrusion die that allowance is less, intensity is higher, cost is lower and facilitates implementation.
The technical solution used in the present invention is：A kind of ball stud cold extrusion die, including upper die and lower die, Upper Die-sleeve, under
Die sleeve and product, described upper mould is fixed in Upper Die-sleeve, and described lower mould is fixed in lower die-sleeve, sets in described lower die-sleeve
There is lower mold backing plate, described lower mold backing plate is located at the bottom of lower mould, and described product includes bulb, cervical region and bar portion, described
Bar portion is provided with that first raised and second raised, described first is raised to be located between cervical region and the second projection, and described first
Raised be provided with groove and the second projection between, the diameter of described cervical region is incremented by from top to bottom, described the first projection
Outer surface is the sphere positioned at equatorial positions, and it also includes the first half raised for molding bulb the latter half, cervical region and first
The first half_split block group, the second half_split block group for the raised the latter half of molding first and groove and the Hough guided mode dividing, described
Hough guided mode be fixed in lower die-sleeve, be provided with first through hole in the middle of described Hough guided mode, described lower mould is located at first and leads to
In the hole, the first described half_split block group includes at least three first half_split block, and the second described half_split block group includes at least three
Second half_split block, the first described half_split block and the second half_split block are respectively positioned in Hough guided mode, the first described half_split block and
Two half_split block are all coordinated with Hough guided mode inclined-plane, and described upper die and lower die, the first half_split block and the second half_split block have for molding
The die cavity of product, the second described half_split block is fitted with the upper surface of lower mould in matched moulds, and described upper mould is in matched moulds with the
The upper surface laminating of one half_split block, the equatorial plane of the described lower surface of the first half_split block and the first projection is in same plane
Interior, the equatorial plane of the described upper surface of the second half_split block and the first projection in the same plane, described the first half_split block
Surround the first die cavity being provided with the raised top half of molding bulb the latter half, cervical region and first in a circle and the first half_split block
Face, the second described half_split block surrounds the second die cavity being provided with a circle for the raised the latter half of molding first and groove
Face, described lower mould is provided with the draw-in groove for housing bar portion, be provided between the first described half_split block and the second half_split block for
The mechanism that product is extruded.
After above structure, the present invention compared with prior art has advantages below：Using Huff die, semi-finished product are entered
Row cold extrusion, allowance is little, saves raw material, simultaneously because extruding to semi-finished product, material is compressed, hardness
Height, intensity is big, and structure is simple, low cost, and Hough guided mode plays guiding and supporting role, and the difficult point of product is groove, first convex
Play molding together with cervical region, prior art can only carry out extrusion molding to cervical region, and the first projection and groove can only pass through turning
Just enable it is impossible to be realized by the ball stud cold extrusion die inside background technology, because the first raised going out with groove
Mould direction is inconsistent with the depanning direction of cervical region, if depanning can be pulled product and led to product rejection, the technology of the present invention side by force
Case is arranged to sphere the outer surface of the first projection, using the first half_split block in bulb the latter half, cervical region and the first projection
Half part carries out molding, and the second half_split block carries out molding to the first raised the latter half and groove, allows the first half_split block and second
The half_split block demoulding successively, will not pull product, high yield rate.
Preferably, being provided with the mechanism for being extruded to product between the first described half_split block and the second half_split block
Refer to that the first half_split block is provided with least one slanting guide pillar hole, described slanting guide pillar hole runs through the second half_split block, described tiltedly leads
On post, hole is provided with the Angle Pin being slidably matched with slanting guide pillar hole, free, the described Angle Pin other end in described Angle Pin one end
Run through the second half_split block to be fixed in lower mold backing plate, described slanting guide pillar hole is corresponded with Angle Pin, fixes using Angle Pin,
Half_split block sets that slanting guide pillar hole is matched to carry out matched moulds, and structure is simple, and reliability is high.
Preferably, the quantity of described slanting guide pillar hole be two, described slanting guide pillar hole include the first slanting guide pillar hole and
Second slanting guide pillar hole, the first described slanting guide pillar hole is provided with the first Angle Pin being slidably matched with the first slanting guide pillar hole, described
Second slanting guide pillar hole is provided with the second Angle Pin being slidably matched with the second slanting guide pillar hole, if two slanting guide pillar holes are it is ensured that first breathes out
Husband's block and the second half_split block will not rotate in motor process, and reliability is high, and the first half_split block and the second half_split block share
First Angle Pin and the second Angle Pin are it is ensured that matched moulds and depanning are smooth.
Preferably, the quantity of the first described half_split block and the second half_split block is three, energy normally matched moulds and die sinking,
Low cost, moderate number, little, the high precision that influences each other between each half_split block during matched moulds.
Preferably, it also includes ejecting mechanism, described ejecting mechanism include lower mould push plate, lower fore-set, push plate,
Push plate plunger tip and lower mould bottom plate spring guide pillar, described lower mould push plate is fixed on lower die-sleeve bottom, described lower mold backing plate
It is provided with the second through hole, described lower fore-set one end is slidably fitted in lower mould push plate, the described lower fore-set other end slides
In the second through hole, described push plate is resisted against on lower fore-set and is slidably fitted in lower die-sleeve for cooperation, described push plate
Between lower mold backing plate and lower mould push plate, described lower mould is provided with third through-hole, and the second described half_split block is provided with ring
Shape through hole, described annular through-hole is connected with third through-hole, and described annular through-hole axis and third through-hole axis are with always
On line, described annular through-hole outer annular diameter is more than or equal to the diameter of third through-hole, and described push plate plunger tip one end is fixed
In push plate, the rank street face of the described push plate plunger tip other end is concave, the described push plate plunger tip other end
Protuberance is slidably fitted in annular through-hole through lower mold backing plate, and the depressed part of the described push plate plunger tip other end passes through lower die-cushion
Plate is slidably fitted in third through-hole and is located at below the second half_split block, and described lower mould bottom plate spring guide pillar one end is fixed on down
In mould push plate, the described lower mould bottom plate spring guide pillar other end is fixed in lower mold backing plate through push plate, using lower fore-set
Ejection, also up pushes up push plate with fore-set at present, the protuberance of push plate plunger tip upper end ejects the first half_split block at first, under
Fore-set continues ejection, when the depressed part of push plate plunger tip upper end is contacted, the second Hough BOB(beginning of block) with the lower surface of the second half_split block
Ejection, until push plate is against lower mould bottom, stops ejection, structure is simple, and described push plate is resisted against and refers on lower fore-set
Lower fore-set is provided with step, and push plate is resisted against on step, first the first half_split block demoulding is allowed the second half_split block demoulding again, reliably
Property high, push plate plunger tip is simultaneously used for the first half_split block and the demoulding of the second half_split block, and structure is simple.
Preferably, the part that described lower mould bottom plate spring guide pillar is located between lower mould push plate and push plate is cased with bullet
Spring, spring is in compressive state all the time, and spring heads on push plate and the second half_split block always, after product takes out, the first Hough
Block and the second half_split block will not fall down, and so convenient next one workpiece is put into, to realize continuous production, in general, one
Individual half_split block corresponds to a spring.
Preferably, being provided with the push rod for ejecting bar portion in described lower fore-set, described draw-in groove runs through lower mould, described
Push rod be slidably fitted in lower mould, convenient product is ejected.
Preferably, the axis of described Angle Pin is angle A with the angle of horizontal plane, between described bulb and cervical region
Be provided with the first surface connecting for transition, described first raised be provided with the second curved surface being connected for transition between groove
(, it is angle B that described first surface crosses connect with the first curve tangent line of contact and the angle of level of bulb, described second
It is angle C with the angle of level that curved surface crosses the first raised tangent line of contact that connects with the second curve, and described angle A is equal to or little
In 45 °, described angle B is more than angle A, and described angle C is less than or equal to angle B and is more than angle A, and angle A 40 is equal to
Or less than 45 ° it is ensured that product, the first half_split block and the second half_split block depanning ejection are accessible, in the demoulding, the first half_split block does
Oblique movement, needs the power that ejects upwards to be F, then the first half_split block is along the component F1=FsinA, F1=in slanting guide pillar hole direction
FsinA, F1 increase with the increase of angle A, and when angle A 40 reaches 90 °, F1 is maximum, but angle A 40 can not be 90 again
Degree, because the first Hough cannot realize the demoulding soon, is resolved into the component F2=F1cosA=of horizontal direction motion by F1
FsinAcosA, efficiency maximum demand meets the convenient taking-up of optimal pushing method, ensures ejection cycle the fastest, F2=again
F1cosA=FsinA cosA=1/2Fsin2A, when A=45 °, F2 has a maximum, therefore the scope of A should 0～45 ° it
Between, work as B<During A, depanning is accessible；As B=A, but theory is optimal cannot meet；Work as B>During A, product 6 and mould exist
Mutually locked (middle push rod 33 apply top power when), in sum, the angle A of the not locked Angle Pin of practical set-up require be
0～45 °, optimized angle A is 8 °～42 °, optional 15 °～38 °, and optimum is 31 °, meets the convenient taking-up of optimal pushing method, and
Ensure ejection cycle the fastest, use first surface transitional ball H＆N portion simultaneously, raised and recessed with the second surface blending first
Groove, the demoulding is without hindrance, and between bulb and cervical region, the first raised bonding strength height and groove between, angle C is 4 °～30 °, can
Select 6 °～25 °, optimum is 22 °.
Preferably, being smaller than between the described depressed part of the push plate plunger tip other end and the second half_split block or wait
In push rod upper end and bar portion lower surface spacing it is ensured that allowing the first half_split block and the second half_split block demoulding before product ejection,
Product will not be pulled, reliability is high, the spacing between the depressed part of the push plate plunger tip other end and the second half_split block is equal to push rod
The spacing of upper end and bar portion lower surface, and the second half_split block action ejects simultaneously, the time is the fastest.
Preferably, described lower die-sleeve is externally provided with for Hough guided mode is carried out with radially spacing lower die-sleeve lock tube, institute
The lower die-sleeve lock tube stated is located at the top of lower die-sleeve, Hough guided mode is carried out spacing and fixing, structure is simple, detachably, improves
The stability of mould.
Preferably, described Upper Die-sleeve surface is provided with for Upper Die-sleeve is carried out with spacing Upper Die-sleeve stop collar, described
Upper Die-sleeve stop collar in be provided with chute, described Upper Die-sleeve is slidably fitted in chute, the motion of upper mould is risen with guiding and limits
Position effect is it is ensured that the quality of ball stud cold-extruded.
Brief description
Fig. 1 is the front sectional view of ball stud cold extrusion die of the present invention.
Fig. 2 is the schematic perspective view of ball stud cold extrusion die first half_split block of the present invention.
Fig. 3 is the front view of ball stud cold extrusion die second half_split block of the present invention.
Fig. 4 is the sectional view of ball stud cold extrusion die first half_split block of the present invention.
Fig. 5 is the axonometric chart of ball stud cold extrusion die first half_split block of the present invention and the second half_split block.
Fig. 6 is the front sectional view of mould under ball stud cold extrusion die of the present invention.
Fig. 7 is the schematic perspective view of ball stud cold extrusion die product of the present invention.
Wherein, 1, upper mould, 2, lower mould, 3, Upper Die-sleeve, 4, lower die-sleeve, 5, lower mold backing plate, 6, product, 7, bulb, 8, cervical region,
9th, bar portion, 10, first is raised, and 11, second is raised, and 12, groove, 13, Hough guided mode, 14, first through hole, the 15, first half_split block,
16th, the second half_split block, the 17, first cavity surface, the 18, second cavity surface, 19, draw-in groove, the 20, first slanting guide pillar hole, 21, second tiltedly leads
Post holes, the 22, first Angle Pin, the 23, second Angle Pin, 24, lower mould push plate, 25, lower fore-set, 26, push plate, 27, push plate
Plunger tip, 28, lower mould bottom plate spring guide pillar, the 29, second through hole, 30, third through-hole, 31, annular through-hole, 32, spring, 33, push rod,
34th, first surface, the 35, second curved surface, 36, lower die-sleeve lock tube, 37, Upper Die-sleeve stop collar, 38, chute, 39, annular protrusion, 40,
Angle A, 41, angle B, 42, angle C.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and detailed description.
As illustrated, the present invention provides a kind of ball stud cold extrusion die, including upper mould 1, lower mould 2, Upper Die-sleeve 3, lower mould
Set 4 and product 6, described upper mould 1 is fixed in Upper Die-sleeve 3, and described lower mould 2 is fixed in lower die-sleeve 4, described lower die-sleeve
It is provided with lower mold backing plate 5, described lower mold backing plate 5 is located at the bottom of lower mould 2, and described product 6 includes bulb 7, cervical region 8 and in 4
Bar portion 9, described bar portion 9 is provided with the first raised 10 and second projection 11, and the first described projection 10 is located at cervical region 8 and second
Between raised 11, between the first raised 10 and second described projection 11, it is provided with groove 12, the diameter of described cervical region 8 is from upper end
It is incremented by lower end, the outer surface of the first described projection 10 is the sphere positioned at equatorial positions, and it is also included for molding bulb 7
First half_split block group of the latter half, cervical region 8 and the first raised 10 top half, for raised 10 the latter half of molding first and
Second half_split block group of groove 12 and Hough guided mode 13, described Hough guided mode 13 is fixed in lower die-sleeve 4, and described Hough is led
It is provided with first through hole 14, described lower mould 2 is located in first through hole 14, and the first described half_split block group is included at least in the middle of mould 13
Three the first half_split block 15, the second described half_split block group includes at least three second half_split block 16, described the first half_split block
15 and second half_split block 16 be respectively positioned in Hough guided mode 13, the first described half_split block 15 and the second half_split block 16 are all led with Hough
Mould 13 inclined-plane coordinates, and described upper mould 1, lower mould 2, the first half_split block 15 and the second half_split block 16 have the type for shaped article 6
Chamber, the second described half_split block 16 is fitted with the upper surface of lower mould 2 in matched moulds, and described upper mould 1 is breathed out with first in matched moulds
The upper surface laminating of husband's block 15, the equatorial plane of the described lower surface of the first half_split block 15 and the first projection 10 is in same plane
Interior, the equatorial plane of the described upper surface of the second half_split block 16 and the first projection 10 in the same plane, described first Kazakhstan
Husband's block 15 surrounds and is provided with molding bulb 7 the latter half, cervical region 8 and first raised 10 first halves in a circle and the first half_split block 15
The first cavity surface 17 divided, the second described half_split block 16 surrounds and is provided with 10 the latter half raised for molding first in a circle
With the second cavity surface 18 of groove 12, described lower mould 2 is provided with the draw-in groove 19 for housing bar portion 9, described the first half_split block
15 and second are provided with the mechanism for being extruded to product 6 between half_split block 16, it is an advantage of the invention that utilizing Huff die pair
Semi-finished product carry out cold extrusion, and allowance is little, saves raw material, simultaneously because extruding to semi-finished product, material is pressed
Contracting, hardness is high, and intensity is big, and structure is simple, low cost, and Hough guided mode plays guiding and supporting role, and the difficult point of product is groove
12nd, the first raised 10 molding together with cervical region 8, prior art can only carry out extrusion molding to cervical region 8, and first raised 10 and recessed
Groove 12 can only just be enabled by turning it is impossible to be realized by the ball stud cold extrusion die inside background technology, because the
One raised 10 is inconsistent with the depanning direction of groove 12 and the depanning direction of cervical region 8, if depanning can be pulled product 6 and led to by force
Product rejection, technical solution of the present invention is arranged to sphere the outer surface of the first projection 10, using the first half_split block 15 to bulb 7
The latter half, cervical region 8 and the first raised 10 top half carry out molding, the second half_split block 16 10 the latter half raised to first and
Groove 12 carries out molding, allows the first half_split block 15 and second half_split block 16 demoulding successively, will not pull product, high yield rate.
It is provided between the first described half_split block 15 and the second half_split block 16 and refer to for the mechanism that product 6 is extruded
First half_split block 15 is provided with least one slanting guide pillar hole, and described slanting guide pillar hole runs through the second half_split block 16, and described tiltedly leads
On post, hole is provided with the Angle Pin being slidably matched with slanting guide pillar hole, free, the described Angle Pin other end in described Angle Pin one end
Run through the second half_split block 16 to be fixed in lower mold backing plate 5, described slanting guide pillar hole is corresponded with Angle Pin, solid using Angle Pin
Fixed, half_split block sets that slanting guide pillar hole is matched to carry out matched moulds, and structure is simple, and reliability is high.
The quantity of described slanting guide pillar hole is two, and described slanting guide pillar hole includes the first slanting guide pillar hole 20 and second tiltedly leads
Post holes 21, the first described slanting guide pillar hole 20 is provided with the first Angle Pin 22 being slidably matched with the first slanting guide pillar hole 20, described
Second slanting guide pillar hole 21 is provided with the second Angle Pin 23 being slidably matched with the second slanting guide pillar hole 21, if two slanting guide pillar holes it is ensured that
First half_split block 15 and the second half_split block 16 will not rotate in motor process, and reliability is high, the first half_split block 15 and the
Two half_split block 16 share the first Angle Pin 22 and the second Angle Pin 23 it is ensured that matched moulds and depanning are smooth.
The quantity of the first described half_split block 15 and the second half_split block 16 is three, energy normally matched moulds and die sinking, quantity
Moderate, little, the high precision that influences each other between each half_split block during matched moulds.
It also includes ejecting mechanism, and described ejecting mechanism includes lower mould push plate 24, lower fore-set 25, push plate 26, top
Push pedal plunger tip 27 and lower mould bottom plate spring guide pillar 28, described lower mould push plate 24 is fixed on lower die-sleeve 4 bottom, described lower mould
Backing plate 5 is provided with the second through hole 29, and described lower fore-set 25 one end is slidably fitted in lower mould push plate 24, described lower fore-set
25 other ends are slidably fitted in the second through hole 29, and described push plate 26 is resisted against on lower fore-set 25 and is slidably fitted in lower mould
In set 4, described push plate 26 is located between lower mold backing plate 5 and lower mould push plate 24, and described lower mould 2 is provided with third through-hole
30, the second described half_split block 16 is provided with annular through-hole 31, and described annular through-hole 31 is connected with third through-hole 30, described
With third through-hole 30 axis on the same line, described annular through-hole 31 outer annular diameter is more than or equal to annular through-hole 31 axis
The diameter of third through-hole 30, described push plate plunger tip 27 one end is fixed in push plate 26, and described push plate plunger tip 27 is another
The rank street face of one end is concave, and the protuberance of described push plate plunger tip 27 other end is slidably matched through lower mold backing plate 5
In annular through-hole 31, the depressed part of described push plate plunger tip 27 other end is slidably fitted in third through-hole through lower mold backing plate 5
In 30 and below the second half_split block 16, described lower mould bottom plate spring guide pillar 28 one end is fixed in lower mould push plate 24,
Described lower mould bottom plate spring guide pillar 28 other end is fixed in lower mold backing plate 5 through push plate 26, is ejected using lower fore-set 25,
Also up push up with 25 push plate 26 of fore-set at present, the protuberance of push plate plunger tip 27 upper end pushes up the first half_split block 15 at first
Go out, lower fore-set 25 continues ejection, when the depressed part of push plate plunger tip 27 upper end is contacted, second with the lower surface of the second half_split block 16
Half_split block 16 starts to eject, until push plate 26 is against lower mould 2 bottom, stops ejection, structure is simple, and described push plate 26 is supported
Lean against and on lower fore-set 25, refer to that lower fore-set 25 is provided with step, push plate 26 is resisted against on step, first the first half_split block 15 is taken off
Mould allows the second half_split block 16 demoulding again, and reliability is high, and push plate plunger tip 27 is simultaneously used for the first half_split block 15 and the second half_split block
16 demoulding, structure is simple.
The part that described lower mould bottom plate spring guide pillar 28 is located between lower mould push plate 24 and push plate 26 is cased with spring
32, spring 32 is in compressive state all the time, and spring 32 heads on push plate 26 and the second half_split block 16 always, after product 6 takes out,
First half_split block 15 and the second half_split block 16 will not fall down, and so convenient next one workpiece is put into, to realize continuous production,
In general, a half_split block corresponds to a spring 32.
Described push plate plunger tip 27 be located at part between lower mold backing plate 5 and push plate 26 be also cased with spring 32 it is ensured that
Push plate plunger tip 27 can reset.
It is provided with the push rod 33 for ejecting bar portion 9, described draw-in groove 19 runs through lower mould 2, described in described lower fore-set 25
Push rod 33 be slidably fitted in lower mould 2, convenient product 6 is ejected.
The axis of described Angle Pin and the angle of horizontal plane are angle A 40, are provided between described bulb 7 and cervical region 8
The first surface 34 connecting for transition, is provided with, between first raised 10 described and groove 12, the second song being connected for transition
Face 35, described first surface 34 crosses that bulb 7 connects the tangent line of contact with the first curve 34 and the angle of level is angle B 41,
Described the second curved surface 35 is crossed first raised 10 and is connected the tangent line of contact with the second curve 35 and the angle of level is angle C42,
Described angle A 40 is equal to or less than 45 °, and described angle B 41 is more than angle A 40, and described angle C42 is less than or equal to angle
Degree B41 and be more than angle A 40, angle A 40 is equal to or less than 45 ° it is ensured that product, the first half_split block and the second half_split block depanning top
Go out accessible, the first half_split block does oblique movement in the demoulding, need the power ejecting upwards to be F, then the first half_split block edge is tiltedly led
The component F1=FsinA in post holes direction, F1=FsinA, F1 increase with the increase of angle A, when angle A 40 reaches 90 °
F1 is maximum, but angle A 40 can not be 90 degree again, because the first Hough cannot realize the demoulding soon, resolves into horizontal direction by F1
The component F2=F1cosA=FsinAcosA of motion, efficiency maximum demand meets the convenient taking-up of optimal pushing method, ensures again
Ejection cycle the fastest, F2=F1cosA=FsinAcosA=1/2Fsin2A, when A=45 °, F2 has a maximum, therefore A
Scope should work as B between 0～45 °<During A, depanning is accessible；As B=A, but theory is optimal cannot meet；Work as B>A
When, there is mutually locked (when middle push rod 33 applies top power) in product 6 and mould, in sum, practical set-up is not locked
The angle A of Angle Pin requires as 0～45 °, and optimized angle A is 8 °～42 °, optional 15 °～38 °, and optimum is 31 °, meets optimal
Pushing method is convenient to be taken out, and ensures ejection cycle the fastest again, uses first surface 34 transition bulb 7 and cervical region 8 simultaneously, uses the
Two curved surface 35 transition first raised 10 and groove 12, the demoulding is without hindrance, and between bulb 7 and cervical region 8, and first raised 10 and groove
Between 12, bonding strength is high.
Being smaller than between the described depressed part of push plate plunger tip 27 other end and the second half_split block 16 or be equal to top
The spacing of bar 33 upper end and bar portion 9 lower surface is it is ensured that allowed the first half_split block 15 and the second half_split block 16 take off before product 6 ejection
Mould, will not pull product 6, and reliability is high, the spacing between the depressed part of push plate plunger tip 27 other end and the second half_split block 16
Equal to the spacing of push rod 33 upper end and bar portion 9 lower surface, and the second half_split block 16 action ejects simultaneously, and the time is the fastest.
Described lower die-sleeve 4 is externally provided with for Hough guided mode 6 is carried out with radially spacing lower die-sleeve lock tube 36, described under
Die sleeve lock tube 36 is located at the top of lower die-sleeve 4, Hough guided mode 6 is carried out spacing and fixing, structure is simple, detachably, improves mould
The stability of tool.
Described Upper Die-sleeve 3 surface is provided with for Upper Die-sleeve 3 is carried out with spacing Upper Die-sleeve stop collar 37, described upper mould
Be provided with chute 38 in set stop collar 37, described Upper Die-sleeve 3 is slidably fitted in chute 38, the motion of upper mould 1 is risen guiding and
Position-limiting action is it is ensured that the quality of ball stud cold-extruded.
The lower end of described Upper Die-sleeve stop collar 11 is provided with annular protrusion 39, and described lower die-sleeve lock tube 36 is slidably fitted in
In annular protrusion 39, it play the guiding role, reliability is high, first allow the annular protrusion 39 on Upper Die-sleeve stop collar 37 move to lower die-sleeve
Lock tube 36 upper surface, is then slidably fitted in chute 38 using Upper Die-sleeve 3 and makes upper mould 1 and the 2-in-1 mould of lower mould, and reliability is high.
Specifically, the principle of the present invention is first to be cast into semi-finished product, bulb 7 molding with blank, and club has formed two
Section, the object being extruded can be cervical region 8, first raised 10 and groove 12, and described lower mould 2 is provided with for housing bar portion 9
Draw-in groove 19, before matched moulds, the club of semi-finished product is put in draw-in groove 19, the second half_split block 16 and the first half_split block 16 is worn successively
Cross Angle Pin and lean against Hough guided mode 6 inner surface, be then pressed downward with Upper Die-sleeve 3, upper mould 1 presses to half_split block, half_split block along
Angle Pin is toward that matched moulds of product 6, the matched moulds when the second half_split block 16 is fitted in lower mould 2 upper surface, in the first half_split block 15
The second cavity surface 18 in one cavity surface 17 and the second half_split block 16 extrudes to product 6 respectively, and cervical region is extruded, product
6 complete cold extrusion, replace existing turning, and allowance is little, greatlys save material, and due to being extruding, organizational structure is more
Closely, intensity is big, long service life, and quality is good, during the demoulding, is ejected using lower fore-set 25, with 25 push plate 26 of fore-set at present
Also up push up, the protuberance of push plate plunger tip 27 upper end ejects the first half_split block 15 at first, lower fore-set 25 continues ejection, works as top
The depressed part of push pedal plunger tip 27 upper end is contacted with the lower surface of the second half_split block 16, and the second half_split block 16 starts to eject, until top
Push pedal 26 is against lower mould 2 bottom, stops ejection, and structure is simple, and described push plate 26 is resisted against and refers to lower top on lower fore-set 25
Post 25 is provided with step, and push plate 26 is resisted against on step, first the first half_split block 15 demoulding is allowed the second half_split block 16 demoulding again,
Reliability is high, and push plate plunger tip 27 is simultaneously used for the first half_split block 15 and the demoulding of the second half_split block 16, and structure is simple, in addition,
On only need to the power in a direction when being molded to half_split block and can be achieved with the matched moulds of half_split block that is to say, that upper mould only needs to Kazakhstan
Husband's block applies the power of an axial direction, the improvement of this technical scheme and prior art：First, setting first raised 10 and second is raised
11st, form groove 12 between cervical region 8 and the first projection 10 and the diameter of cervical region 8 is incremented by from top to bottom；2nd, the first projection 10
Outer surface is the sphere positioned at equatorial positions；3rd, the first half_split block 15 and the second half_split block 16 combine.
Whole mould includes two parts, and one) compressed portion：Only need to be on common uniaxially hydraulic press, during beginning only
Pressure vertically downward need to be provided, the first half_split block 15 and the second half_split block 16 (the first half_split block 15 and the are closed in molding in driving
Two half_split block 16 are required at least three or more quantity).Pressing half_split block refers to that half_split block is subject to from downward pressure
Complete downwardly and radially inwardly to move each along guide pillar afterwards, until half_split block closes each other.Half_split block pressing completes cold
Extruding action, and cervical region 8, first raised 10 and groove 12 extrusion molding complete simultaneously.Two) eject part：The ejection of hydraulic press
Bar is applied on the lower fore-set 25 of mould, is ejected half_split block and ball stud by mechanism, the now knock-pin return of hydraulic press,
Ball stud takes out, and the first half_split block 15 and the second half_split block 16 continue holding under the support of compression spring 32 and open, and treat bulb
After pin blank is put into, in the pressures cycle pressing action of upper mould.
Above preferred embodiments of the present invention are described, but are not to be construed as limiting the scope of the invention.This
Bright be not only limited to above example, its concrete structure allows to change, institute in all protection domains in demand for independence of the present invention
The various change made is all within the scope of the present invention.
Claims (10)
1. a kind of ball stud cold extrusion die, including upper mould (1), lower mould (2), Upper Die-sleeve (3), lower die-sleeve (4) and product (6),
Described upper mould (1) is fixed in Upper Die-sleeve (3), and described lower mould (2) is fixed in lower die-sleeve (4), described lower die-sleeve (4)
Inside it is provided with lower mold backing plate (5), described lower mold backing plate (5) is located at the bottom of lower mould (2), described product (6) includes bulb
(7), cervical region (8) and bar portion (9), described bar portion (9) is provided with first raised (10) and the second projection (11), and described first
Raised (10) are located between cervical region (8) and second raised (11), set between first described raised (10) and second raised (11)
Fluted (12), the diameter of described cervical region (8) be incremented by from top to bottom it is characterised in that：Described first is raised (10)
Outer surface be sphere positioned at equatorial positions, it also includes convex for molding bulb (7) the latter half, cervical region (8) and first
Play the first half_split block group of (10) top half, being used for the second Hough of molding first projection (10) the latter half and groove (12)
Block group and Hough guided mode (13), described Hough guided mode (13) is fixed in lower die-sleeve (4), in the middle of described Hough guided mode (13)
It is provided with first through hole (14), described lower mould (2) is located in first through hole (14), and the first described half_split block group includes at least three
Individual first half_split block (15), the second described half_split block group includes at least three second half_split block (16), described the first Hough
Block (15) and the second half_split block (16) are respectively positioned in Hough guided mode (13), described the first half_split block (15) and the second half_split block
(16) all coordinate with Hough guided mode (13) inclined-plane, described upper mould (1), lower mould (2), the first half_split block (15) and the second half_split block
(16) there is the die cavity for shaped article (6), described the second half_split block (16) is pasted with the upper surface of lower mould (2) in matched moulds
Close, described upper mould (1) is fitted with the upper surface of the first half_split block (15) in matched moulds, under described the first half_split block (15)
In the same plane, the upper surface of described the second half_split block (16) is convex with first for the equatorial plane of surface and first raised (10)
Play the equatorial plane of (10) in the same plane, described the first half_split block (15) surrounds in a circle and the first half_split block (15)
It is provided with first cavity surface (17) of raised (10) top half of molding bulb (7) the latter half, cervical region (8) and first, described
Second half_split block (16) surrounds the Second-Type being provided with a circle for raised (10) the latter half of molding first and groove (12)
Cavity surface (18), described lower mould (2) is provided with the draw-in groove (19) for housing bar portion (9), described the first half_split block (15) and
It is provided with the mechanism for being extruded to product (6) between two half_split block (16).
2. ball stud cold extrusion die according to claim 1 it is characterised in that：Described the first half_split block (15) and
It is provided between two half_split block (16) and refer to that the first half_split block (15) is provided with least one for the mechanism that product (6) is extruded
Individual slanting guide pillar hole, described slanting guide pillar hole runs through the second half_split block (16), and on described Angle Pin, hole is provided with and is slided with slanting guide pillar hole
The Angle Pin of dynamic cooperation, freely, it is fixing that the described Angle Pin other end runs through the second half_split block (16) for described Angle Pin one end
In lower mold backing plate (5), described slanting guide pillar hole is corresponded with Angle Pin.
3. ball stud cold extrusion die according to claim 2 it is characterised in that：The quantity of described slanting guide pillar hole is two
Individual, described slanting guide pillar hole includes the first slanting guide pillar hole (20) and the second slanting guide pillar hole (21), described the first slanting guide pillar hole
(20) it is provided with the first Angle Pin (22) being slidably matched with the first slanting guide pillar hole (20), described the second slanting guide pillar hole (21) is provided with
The second Angle Pin (23) being slidably matched with the second slanting guide pillar hole (21).
4. ball stud cold extrusion die according to claim 1 it is characterised in that：Described the first half_split block (15) and
The quantity of two half_split block (16) is three.
5. ball stud cold extrusion die according to claim 1 it is characterised in that：It also includes ejecting mechanism, described
Ejecting mechanism includes lower mould push plate (24), lower fore-set (25), push plate (26), push plate plunger tip (27) and lower mould bottom plate spring
Guide pillar (28), described lower mould push plate (24) is fixed on lower die-sleeve (4) bottom, and described lower mold backing plate (5) is provided with second
Through hole (29), described lower fore-set (25) one end is slidably fitted on lower mould push plate (24), and described lower fore-set (25) is another
End is slidably fitted in the second through hole (29), and described push plate (26) is resisted against lower fore-set (25) above and is slidably fitted in lower mould
In set (4), described push plate (26) is located between lower mold backing plate (5) and lower mould push plate (24), and described lower mould (2) is provided with
Third through-hole (30), described the second half_split block (16) is provided with annular through-hole (31), described annular through-hole (31) and the 3rd
Through hole (30) connects, described annular through-hole (31) axis with third through-hole (30) axis on the same line, described annular
Through hole (31) outer annular diameter is more than or equal to the diameter of third through-hole (30), and described push plate plunger tip (27) one end is fixed on top
In push pedal (26), the rank street face of described push plate plunger tip (27) other end is concave, described push plate plunger tip (27)
The protuberance of the other end is slidably fitted in annular through-hole (31) through lower mold backing plate (5), and described push plate plunger tip (27) is another
The depressed part at end is slidably fitted in third through-hole (30) through lower mold backing plate (5) and is located at below the second half_split block (16), institute
Lower mould bottom plate spring guide pillar (28) one end stated is fixed on lower mould push plate (24), described lower mould bottom plate spring guide pillar (28)
The other end is fixed in lower mold backing plate (5) through push plate (26).
6. ball stud cold extrusion die according to claim 5 it is characterised in that：Described lower mould bottom plate spring guide pillar
(28) part being located between lower mould push plate (24) and push plate (26) is cased with spring (32).
7. ball stud cold extrusion die according to claim 5 it is characterised in that：It is provided with use in described lower fore-set (25)
In the push rod (33) of ejection bar portion (9), described draw-in groove (19) runs through lower mould (2), and described push rod (33) is slidably fitted in down
In mould (2).
8. ball stud cold extrusion die according to claim 2 it is characterised in that：The axis of described Angle Pin and level
The angle in face is angle A (40), is provided with, between described bulb (7) and cervical region (8), the first surface (34) being connected for transition,
It is provided with the second curved surface (35) being connected for transition, described first surface between described first raised (10) and groove (12)
(34) crossing connect with the first curve (34) tangent line of contact and the angle of level of bulb (7) is angle B (41), described the second song
Face (35) crosses that first raised (10) connect the tangent line of contact with the second curve (35) and the angle of level is angle C (42), described
Angle A (40) be equal to or less than 45 °, described angle B (41) is more than angle A (40), and described angle C (42) is less than or waits
In angle B (41) and more than angle A (40).
9. ball stud cold extrusion die according to claim 5 it is characterised in that：Described push plate plunger tip (27) is another
Being smaller than between depressed part and second half_split block (16) at end or equal between push rod (33) upper end and bar portion (9) lower surface
Away from.
10. ball stud cold extrusion die according to claim 1 it is characterised in that：Described lower die-sleeve (4) is externally provided with use
In Hough guided mode (6) is carried out with radially spacing lower die-sleeve lock tube (36), described lower die-sleeve lock tube (36) is located at lower die-sleeve (4)
Top.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611129719.0A CN106424192B (en) | 2016-12-09 | 2016-12-09 | Ball stud cold extrusion die |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611129719.0A CN106424192B (en) | 2016-12-09 | 2016-12-09 | Ball stud cold extrusion die |
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| CN106424192B CN106424192B (en) | 2018-07-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112848154A (en) * | 2021-02-03 | 2021-05-28 | 宁海驰骋金属制品有限公司 | Automobile instrument support die |
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| CN206262996U (en) * | 2016-12-09 | 2017-06-20 | 宁海县鑫鸿汽车部件有限公司 | Ball stud cold extrusion die |
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| JP2003117630A (en) * | 2001-10-09 | 2003-04-23 | Honda Motor Co Ltd | Forging die |
| JP2006159284A (en) * | 2004-12-03 | 2006-06-22 | Sakamura Mach Co Ltd | Attaching and detaching device of die |
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|---|---|
| CN106424192B (en) | 2018-07-03 |
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