CN104289546B - Extrusion forming mold - Google Patents
Extrusion forming mold Download PDFInfo
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- CN104289546B CN104289546B CN201410082294.7A CN201410082294A CN104289546B CN 104289546 B CN104289546 B CN 104289546B CN 201410082294 A CN201410082294 A CN 201410082294A CN 104289546 B CN104289546 B CN 104289546B
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- Prior art keywords
- elastic ring
- matrix
- mold
- extrusion molding
- molding 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
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Of Metal (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to an extrusion forming mold. The extrusion forming mold comprises a mold sleeve; a ladder-shaped inner cavity penetrating a vertical direction is disposed in the mold sleeve; the inner cavity comprises a mold plate cavity, a mold core cavity and an open cavity successively along an axial direction; a mold core is arranged in the mold core cavity; a mold plate is arranged in the mold plate cavity; an outer peripheral surface of the mold plate is sleeved by an elastic ring that elastically contracts and expands in a radial direction; the elastic ring is provided with an inner peripheral surface matching the outer peripheral surface of the mold plate in a flexible support manner and an outer peripheral surface matching with the inner wall of the mold plate cavity in a flexible support manner. With the extrusion forming mold, cracking phenomenon of the mold plate can be prevented and a service life of the mold is prolonged.
Description
Technical field
The present invention relates to a kind of extrusion molding dies.
Background technology
A kind of existing extrusion molding dies for producing nut, as Figure 1-3, including die sleeve 1, set in die sleeve 1
There is the inner chamber running through above-below direction, inner chamber is stepped, and inner chamber axially includes matrix matrix chamber, mold core cavities, opening successively along it
Chamber, is equipped with core rod in mold core cavities, be equipped with matrix 2 in matrix chamber, the inwall in the outer peripheral face of matrix 2 and die sleeve 1 matrix chamber it
Between be interference fit, matrix 2 is corresponding with core rod 3 to offer vertically extending matrix hole and core rod hole, core rod hole and
Matrix hole connects.
But existing extrusion molding dies have that easy cracking and service life are short, lead to the former of the problems referred to above
Because mainly by following 2 points: 1) this matrix is made using alloy material, though alloy material has extremely strong axial compression resistance ability,
There is extremely strong radial direction fragility simultaneously, during die assembly, during matrix press-in die sleeve, when the pretension being strapped in around matrix
Power is not enough or uneven when, easily lead to matrix radially to ftracture；2), behind matrix press-in matrix chamber, mould has larger internal stress to deposit
When room temperature changes, matrix and the difference of die sleeve thermal expansion and contraction degree can led to because the material of matrix and die sleeve is different
Different, lead to mould internal stress to be increased dramatically, thus mould natural cracking phenomenon occurs.
By changing the structure in matrix hole and core rod hole, this extrusion molding dies can be used for producing nut, bolt and screw.
When for producing nut, this extrusion forming mold raw material can be stretched into mould as lower mould (cover half) by plug-in mounting push rod in atrium
In the core rod hole and core rod hole of set 1, raw material is pressed down against by upper mould (dynamic model), makes raw material fill up core rod hole and matrix hole, matrix 2
By outwardly radial power, but the outer peripheral face of matrix 2 is radially spacing by the matrix cavity wall of die sleeve 1, when squeeze force is excessive
When, matrix 2 occurs problem of Cracking, and die life is short.
Content of the invention
It is an object of the invention to provide a kind of extrusion molding dies, to solve easy to crack the asking of matrix in prior art
Topic.
To achieve these goals, the extrusion molding dies of the present invention adopt the following technical scheme that extrusion molding dies, bag
Include die sleeve, in die sleeve, be provided with the stair-stepping inner chamber running through above-below direction, inner chamber axially includes matrix chamber, core rod successively along it
Chamber, atrium, are equipped with core rod in mold core cavities, be equipped with matrix, the outer peripheral face of described matrix is arranged with footpath in matrix chamber
The elastic ring elasticling actuate upwards, described elastic ring has inner peripheral surface and matrix with the outer peripheral face resilient support cooperation of matrix
The outer peripheral face of the inwall resilient support cooperation in chamber.
Described elastic ring be fluting elastic ring, described fluting elastic ring offers radially extending, be used for discharging footpath
To power so that elastic ring occur radial direction deformation stress relief grooves.
Described fluting elastic ring is c shape circle, and described stress relief grooves are the open slot extending radially through along elastic ring.
Described fluting elastic ring is annular ring, and described stress relief grooves are the breach of the end of the radial direction being opened in elastic ring
Groove, this gap slot is non-through slot structure.
Described gap slot has two or more, and each gap slot is uniformly distributed along the circumference of elastic ring.
The inner peripheral surface of described elastic ring is little interior along die sleeve axial outer end for two with the mating surface of the outer peripheral face of described matrix
Hold the big conical surface.
Offer along core rod axially extended core rod hole on described core rod, core rod hole is light pore structure or how lateral opening, described
How lateral opening have at least three seamed edges.
Beneficial effects of the present invention: the outer peripheral face due to matrix is arranged with elastic ring, this turn has three effects: one
Aspect, when ambient room temperature occurs big change, turn can effectively discharge or reduce the internal stress of mould thus avoiding
The matrix natural cracking phenomenon leading to because of room temperature change, improves the environmental suitability of mould；On the other hand, load mould in matrix
During set, turn provides enough and uniform pretightning forces to matrix, can avoid leading to because pretightning force is not enough or uneven
Matrix cracking phenomena, improves the service life of matrix and whole mold use life-span；Additionally, when using, matrix is subject to
Outwardly radial power, elastic ring diametrically expands outwardly to discharge the outwardly radial power that matrix is subject to, thus avoiding mould
There is cracking phenomena because extruding force is excessive in piece.This elastic ring is applied to the optimization of all non-same material moulds.Solution of the present invention
Matrix of having determined problem easy to crack, improves adaptability and the service life of mould.
Further, fluting elastic ring is advantageously implemented elastic ring elastic actuating diametrically.
Further, c shape circle have the advantages that easy to process.
Further, along the equally distributed gap slot of elastic ring circumference, it is advantageously implemented the homogeneous deformation of elastic ring and is subject to
Power, and then be conducive to providing uniform pretightning force to matrix, further reduce the probability of matrix cracking.
Further, in use, matrix is subject to the active force in axial direction, the mating surface between elastic ring and matrix
For the conical surface so that both coordinate for thrust in direction axially upwards, and the radial direction of turn actuates and can also buffer axial direction
On pushing impulsive force thus play vibration isolation effect, thus turn can stop matrix from moving axially outward, it is to avoid matrix
Vibrated outer mobile vertically and protrude the end face of die sleeve.
Brief description
Fig. 1 is the structural representation of prior art；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the structural representation of the matrix in Fig. 1；
Fig. 4 is the structural representation of the embodiment 1 of the extrusion molding dies of the present invention；
Fig. 5 is the top view of Fig. 4；
Fig. 6 is the structural representation of matrix in Fig. 4；
Fig. 7 is the structural representation of elastic ring in Fig. 4；
Fig. 8 is the top view of Fig. 7；
Fig. 9 is that the embodiment 1 of the extrusion molding dies of the present invention is used for producing use state figure during nut；
Figure 10 is the structural representation of finished product nut；
Figure 11 is that the embodiment 1 of the extrusion molding dies of the present invention is used for producing use state figure during bolt；
Figure 12 is the structural representation of finished product bolt；
Figure 13 is the front view (band section view) of the matrix in the embodiment 2 of the extrusion molding dies of the present invention；
Figure 14 is the top view of the matrix in the embodiment 2 of the extrusion molding dies of the present invention.
Specific embodiment
A kind of embodiment 1 of the extrusion molding dies of the present invention, as Figure 4-8: this extrusion molding dies includes die sleeve
11st, core rod 13, matrix 12.It is provided with the inner chamber running through above-below direction, inner chamber is stepped, and inner chamber wraps vertically successively in die sleeve 11
Include matrix chamber, mold core cavities, atrium, core rod 12 is assemblied in mold core cavities, matrix 12 is assemblied in matrix chamber, matrix 12 and core rod
On 13, correspondence offers vertically extending matrix hole and core rod hole, and core rod hole is connected with matrix hole.Core rod hole is polygon
Hole, in the present embodiment, how lateral opening have 12 seamed edges, as twelve edge hole.It is arranged with elasticity on the outer peripheral face of matrix 12
Circle 14, elastic ring 14 has the inner peripheral surface of outer peripheral face resilient support cooperation and the inwall resilient support in matrix chamber with matrix 12
The outer peripheral face of cooperation, this elastic ring 14 is fluting elastic ring.Offer on this fluting elastic ring radially extending, be used for discharging
Radial load so that elastic ring occur radial direction deformation stress relief grooves.In the present embodiment, fluting elastic ring is c shape circle, should
Power release groove is the open slot 141 extending radially through along elastic ring.The cooperation of the outer peripheral face of the inner peripheral surface of elastic ring 14 and matrix 12
Face is two conical surfaces, and this conical surface axially radially tilts along die sleeve from inside to outside from the outside to the core along die sleeve, and that is, the conical surface is along die sleeve axial direction
Outer end is little inner big.The outer peripheral face of elastic ring 14 is two faces of cylinder with the mating surface of the inwall in matrix chamber of die sleeve 11.
As shown in figure 9, the embodiment 1 of the extrusion molding dies of the present invention is used for producing use process during nut: should
Extrusion molding dies are as mould 20(cover half under nut), by the atrium of die sleeve 11 down, and plug-in mounting push rod 21 in atrium,
Then by raw material 22(bar) stretch in the matrix hole of die sleeve 11 and core rod hole from top to bottom, then by mould 23(dynamic model on nut)
It is pressed down against raw material, raw material 22 fills up core rod hole, matrix hole, you can prepare finished product nut 24 as shown in Figure 10, this finished product
Nut is 12 angle flange face nuts.
In preparation process, one side matrix 12 is subject to outwardly radial power, and the outer peripheral face due to matrix 12 is arranged with bullet
Property circle 14, the presence of elastic ring 14 increases the pretightning force to alloy for the die sleeve, effectively avoids matrix 12 to ftracture, simultaneously mould by
When varying environment temperature is expanded with heat and contract with cold, elastic ring serves the effect of release excessive load in the quiescent state again, prevents mould
Ftracture in chamber；On the other hand, matrix 12 is subject to active force upwards, and the mating surface between elastic ring 14 and matrix 12 is up-small and down-big
The conical surface so that both are thrust cooperation in direction axially upwards, and the radial direction of turn 14 actuate can also buffer shaft
Pushing impulsive force upwards is thus play vibration isolation effect, thus turn 14 can stop moving up of matrix, it is to avoid matrix
12 vibrated moving up and protrude the upper surface of die sleeve, and then prevent this extrusion molding dies to lose efficacy.
As shown in figure 11, the embodiment 1 of the extrusion molding dies of the present invention is used for producing use process during bolt: should
Extrusion molding dies are as mould 30(dynamic model on bolt), by atrium upward, mould 31(cover half under bolt) patchhole under
Shaft-like stock to be deformed 33 is inserted inserting in the hole of mould 31 under bolt, then by bolt by end plug-in mounting lower push rod 32 with that
Upper mould 30 is set in the top of stock 33 to be deformed, and plug-in mounting upper ejector pin 34 in the atrium of mould 30 on bolt, then passes through
On bolt, mould 30 is pressed down against stock 33 to be deformed, and mould 30 and mould 31 matched moulds under bolt on bolt, and stock 33 to be deformed fills up
Core rod hole, matrix hole, patchhole, you can prepare finished product bolt 35 as shown in figure 12, this finished product bolt is 12 angle flanges
Face bolt.
In the embodiment 2 of the extrusion molding dies of the present invention, as illustrated in figs. 13-14: fluting elastic ring is annular ring 41, should
Power release groove can also be the gap slot 42 of the end of radial direction being opened in elastic ring, and this gap slot 42 is non-through slot structure, should
Gap slot has 4, and each gap slot is uniformly distributed along the circumference of elastic ring.In other embodiments, gap slot can also be 1
Or 2 or 3 or more than 4.
In the other embodiments of the extrusion molding dies of the present invention, when how lateral opening core rod hole be, this is how lateral opening acceptable
Seamed edge including 3-11 bar seamed edge or more than 12.For example when core rod hole be six lateral opening when, can be used for process hexagonal flange spiral shell
Mother and hexagon flange bolt.
In the other embodiments of the extrusion molding dies of the present invention, core rod hole can also be unthreaded hole, this extrusion forming mold
Tool can be used for processing step rivet.
By changing the shape and structure in matrix hole, can be used for processing the product of different structure.
In the other embodiments of the extrusion molding dies of the present invention, the inner peripheral surface of elastic ring is joined with the outer peripheral face of matrix
Conjunction face can also be two cylindrical surface.
In the other embodiments of the extrusion molding dies of the present invention, may be omitted with the stress relief grooves on elastic ring,
Elastic ring can also be annular ring.
Claims (6)
1. extrusion molding dies, including die sleeve, are provided with the stair-stepping inner chamber running through above-below direction in die sleeve, inner chamber is along it axially
Include matrix chamber, mold core cavities, atrium successively, in mold core cavities, be equipped with core rod, matrix is equipped with matrix in chamber, and its feature exists
In: the elastic ring diametrically elasticling actuate is arranged with the outer peripheral face of described matrix, described elastic ring has outer with matrix
The outer peripheral face of the inwall resilient support cooperation in the inner peripheral surface of side face resilient support cooperation and matrix chamber, described elastic ring is fluting
Elastic ring, described fluting elastic ring offers radially extending, for discharging radial load so that elastic ring occurs radially
The stress relief grooves of deformation.
2. extrusion molding dies according to claim 1 it is characterised in that: described fluting elastic ring be c shape circle, described should
Power release groove is the open slot extending radially through along elastic ring.
3. extrusion molding dies according to claim 1 it is characterised in that: described fluting elastic ring be annular ring, described
Stress relief grooves are the gap slot of the end of the radial direction being opened in elastic ring, and this gap slot is non-through slot structure.
4. according to claim 3 extrusion molding dies it is characterised in that: described gap slot has two or more, each breach
Groove is uniformly distributed along the circumference of elastic ring.
5. the extrusion molding dies according to any one of claim 1-4 it is characterised in that: the inner peripheral surface of described elastic ring
Mating surface with the outer peripheral face of described matrix is two along the big conical surface in the little the inner of die sleeve axial outer end.
6. extrusion molding dies according to claim 1 it is characterised in that: offer on described core rod and axially prolong along core rod
The core rod hole stretched, core rod hole is light pore structure or how lateral opening, and described how lateral opening have at least three seamed edges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410082294.7A CN104289546B (en) | 2014-03-07 | 2014-03-07 | Extrusion forming mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410082294.7A CN104289546B (en) | 2014-03-07 | 2014-03-07 | Extrusion forming mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104289546A CN104289546A (en) | 2015-01-21 |
| CN104289546B true CN104289546B (en) | 2017-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410082294.7A Active CN104289546B (en) | 2014-03-07 | 2014-03-07 | Extrusion forming mold |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107052070A (en) * | 2017-04-26 | 2017-08-18 | 苏州罗普斯金铝业股份有限公司 | One kind assembles technique |
| CN107159730A (en) * | 2017-06-20 | 2017-09-15 | 远东电缆有限公司 | A kind of aluminium profiles line, aluminium profiles row's continuous extruder |
| CN107749682A (en) * | 2017-11-30 | 2018-03-02 | 中山大洋电机股份有限公司 | A kind of plastic packaging motor end cap and its motor of application |
| CN111823490B (en) * | 2020-06-24 | 2021-11-09 | 横店集团东磁股份有限公司 | Mold for preventing secondary plastic injection cracking of magnetic ring and implementation method thereof |
| CN113732093A (en) * | 2021-09-30 | 2021-12-03 | 江阴电工合金股份有限公司 | Production device of high-strength copper-chromium-zirconium contact line |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09300037A (en) * | 1996-05-14 | 1997-11-25 | Aoyama Seisakusho:Kk | Heading die |
| CN201366448Y (en) * | 2009-03-02 | 2009-12-23 | 湖北天轮机械有限公司 | Backward cold extrusion die for rear stabilizer bar sleeve of car |
| CN202336502U (en) * | 2011-10-19 | 2012-07-18 | 汤广顺 | Mould locating sleeve |
| CN202715646U (en) * | 2012-08-22 | 2013-02-06 | 太仓久信精密模具有限公司 | Special-shaped cavity hard alloy cold extrusion mold |
| CN103122896B (en) * | 2012-10-19 | 2014-12-10 | 浙江吉利汽车研究院有限公司杭州分公司 | Elastic clamping ring |
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| CN104289546A (en) | 2015-01-21 |
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