CN103611748A - Continuous extrusion method and extrusion tool for lead frame material of shallow wheel trough - Google Patents
Continuous extrusion method and extrusion tool for lead frame material of shallow wheel trough Download PDFInfo
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- CN103611748A CN103611748A CN201310588587.8A CN201310588587A CN103611748A CN 103611748 A CN103611748 A CN 103611748A CN 201310588587 A CN201310588587 A CN 201310588587A CN 103611748 A CN103611748 A CN 103611748A
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Abstract
The invention discloses a continuous extrusion method for a lead frame material of a shallow wheel trough. The continuous extrusion method comprises the following steps that (a) billets are pressed into a shallow wheel trough extrusion wheel by a shallow wheel trough compaction wheel; (b) the billets pressed into the shallow wheel trough extrusion wheel rotate with the shallow wheel trough extrusion wheel and are subjected to plastic deformation under the driving of a fraction force; (c) after forwards moving to a shallow wheel trough baffling block, the billets enter a shallow wheel trough cavity through a shallow wheel trough cavity inlet and are subjected to expansion deformation; (d) after being subjected to the expansion deformation, the billets are extruded through a mold in the shallow wheel trough cavity, so as to form a product. The continuous extrusion method and an extrusion tool for the lead frame material of the shallow wheel trough have the advantages that the service life of the mold is prolonged, and meanwhile, due to the decrease of the difficulty of the expansion deformation, deformed metal can rapidly enter the cavity and can be rapidly extruded from the mold, so that the production energy consumption of the unit product is reduced; secondly, a shallow wheel trough extrusion device with the same main shaft diameter can be used for producing products having larger widths and sections.
Description
Technical field
The present invention relates to a kind of shallow race blaster fuse frame material continuous squeezing method and extrusion tooling.
Background technology
In prior art, blaster fuse frame material is a kind of important materials that integrated circuit and semiconductor components and devices encapsulation are used, intensity to its material, forming property, conductive capability, the capacity of heat transmission etc. have higher requirement, at present, adopt continuous extrausion process processing blaster fuse frame material, squeegee roller rotates along direction as shown under main shaft power drives, on squeegee roller circumference, there is a ring-shaped groove, blank is in compact wheel is pressed on the groove of squeegee roller, with squeegee roller, move, under the effect of frictional force, blank temperature progressively raises and starts distortion, at material blocking block place, motion is along the circumferential direction obstructed, enter the die cavity of cavity, then by the mould being contained in die cavity, be extruded into product, the shape of its squeegee roller and race is the circle of half opening substantially, the diameter of the degree of depth and blank is suitable, the weak point of this structure is: squeegee roller wheel groove depth is darker, poor (squeegee roller thickness) at squeegee roller internal-and external diameter reduces, squeegee roller strength decreased, often from race, around ftracture, material blocking block is larger with the height that squeegee roller race coordinates, and material blocking block is subject to the breakdown torque increase that radial impact power produces, and material blocking block boss easily ftractures at root, material blocking block thermograde is large, and the life-span is short, compact wheel convex edge height is larger, and easily pressure is collapsed or be cracked, Wall deformation metal inlet is less, and production efficiency is low, because blaster fuse frame material is copper alloy, under its raw material original state, hardness is large, tensile strength is high, adopts current structure processing blaster fuse frame material, and reduce the service life of the main moulds of industrial equipment such as squeegee roller, material blocking block, compact wheel, and production cost increases.
Summary of the invention
The object of this invention is to provide a kind of shallow race blaster fuse frame material continuous squeezing method and extrusion tooling.
The technical scheme that the present invention adopted is for achieving the above object: a kind of shallow race blaster fuse frame material continuous squeezing method, comprises the following steps:
A, blank are pressed in shallow race squeegee roller by shallow race compact wheel;
B, be pressed into blank in the shallow race of squeegee roller along with shallow race squeegee roller rotates together, there is plastic deformation in blank under the driving of frictional force;
C, when blank advance to shallow race backgauge fast after, by the shallow slot cavity body entrance of taking turns, enter the shallow slot cavity body of taking turns, carry out expansion deformation;
Blank after d, expansion deformation is extruded by shallow mould of taking turns in slot cavity body, forms product.
Another technical scheme that the present invention adopted is for achieving the above object: a kind of extrusion tooling for shallow race blaster fuse frame material continuous squeezing method, comprise frame 1, base 2, main shaft 3, shallow race squeegee roller 4, shallow race compact wheel 6, boots seat 7, the shallow slot cavity body 8 of taking turns, mould 9 and shallow race material blocking block 10, frame 1 is arranged on base 2, main shaft 3 is arranged in frame 1 by bearing, shallow race squeegee roller 4 is arranged on main shaft 3, shallow race compact wheel 6 is arranged on shallow race squeegee roller 4, the bottom of boots seat 7 is connected with frame 1, the shallow slot cavity body 8 of taking turns is arranged in boots seat 7, mould 9 is arranged on shallow wheel in slot cavity body 8, shallow race material blocking block 10 is arranged on shallow race squeegee roller 4 and shallow contact-making surface place of taking turns slot cavity body 8
The cross section of described shallow race squeegee roller 4 is rectangle, trapezoidal or oval.
Described shallow race compact wheel 6, shallow to take turns slot cavity body 8 identical with the wheel groove shape of shallow race squeegee roller 4 with the cross section of shallow race material blocking block 10.
Described shallow race compact wheel 6, shallow cross section of taking turns slot cavity body 8 and shallow race material blocking block 10 are rectangle, trapezoidal or oval.
A kind of shallow race blaster fuse frame material continuous squeezing method of the present invention and extrusion tooling, die life is extended, while is due to the reduction of extension forming difficulty, make deformable metal can enter quickly cavity and extrude from mould, therefore the energy consumption of unit product reduces, secondly, the in the situation that of same main shaft diameter, shallow race extrusion equipment can be produced wider, the product that cross section is larger, shallow sheave groove structure, make in situation that squeegee roller inside/outside diameter size is constant, increased squeegee roller thickness, improved the intensity of squeegee roller, compare with traditional sheave groove structure, its processed complex degree reduces, the continuously extruded height that reduces material blocking block projection of shallow race, make material blocking block structure more well-balanced, the material blocking block sectional area increasing can reduce the impact pressure of deformable metal, reduce the radially destruction of torsional forces simultaneously, improve service life, the continuously extruded compact wheel convex edge height that makes of shallow race reduces, in the course of work, contact area is larger, pressure reduces, large convex edge size is also beneficial to the heat treatment of compact wheel simultaneously, the continuously extruded size that increases cavity entrance of shallow race, can make more deformable metal enter cavity and be extruded as product by mould.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of extrusion tooling of the present invention.
Fig. 2 is the structural representation of the shallow race squeegee roller of a kind of extrusion tooling of the present invention.
Fig. 3 is the partial enlarged drawing of Fig. 2.
Fig. 4 is the structural representation of the shallow race material blocking block of a kind of extrusion tooling of the present invention.
Fig. 5 is the structural representation of the shallow race compact wheel of a kind of extrusion tooling of the present invention.
Fig. 6 is the shallow structural representation of taking turns slot cavity body of a kind of extrusion tooling of the present invention.
In figure: 1, frame; 2, base; 3, main shaft; 4, shallow race squeegee roller; 5, blank; 6, shallow race compact wheel; 7, boots seat; 8, the shallow slot cavity body of taking turns; 9, mould; 10, shallow race material blocking block.
The specific embodiment
As shown in Figures 1 to 6, shallow race blaster fuse frame material continuous squeezing method and extrusion tooling, extrusion tooling comprises frame 1, base 2, main shaft 3, shallow race squeegee roller 4, shallow race compact wheel 6, boots seat 7, the shallow slot cavity body 8 of taking turns, mould 9 and shallow race material blocking block 10, frame 1 is arranged on base 2, main shaft 3 is arranged in frame 1 by bearing, shallow race squeegee roller 4 is arranged on main shaft 3, shallow race compact wheel 6 is arranged on shallow race squeegee roller 4, the bottom of boots seat 7 is connected with frame 1, the shallow slot cavity body 8 of taking turns is arranged in boots seat 7, mould 9 is arranged on shallow wheel in slot cavity body 8, shallow race material blocking block 10 is arranged on shallow race squeegee roller 4 and shallow contact-making surface place of taking turns slot cavity body 8, adopt the pressing method of the continuously extruded frock of shallow sheave groove structure to be, blank 5 is pressed in shallow race squeegee roller 4 by shallow race compact wheel 6, start to carry out continuously extruded process, be pressed into blank 5 in the shallow race of squeegee roller along with shallow race squeegee roller 4 rotates together, due to rubbing action, blank temperature raises, and there is plastic deformation under the driving of frictional force, after running into shallow race backgauge fast 10, blank enters cavity by shallow entrance of taking turns slot cavity body 8, carry out expansion deformation, then by mould 9, be extruded off-the-shelf, the present invention, squeegee roller 4 adopts shallow sheave groove structure, crucial frock compact wheel 6 in while continuous extrusion apparatus, cavity 8, backgauge fast 10 all adopts shallow sheave groove structure, the cross sectional shape of shallow race squeegee roller 4 can be rectangle, trapezoidal, the shapes such as ellipse, its objective is in order to keep in situation that squeegee roller inside/outside diameter size is constant, increase the thickness of squeegee roller 4, improved intensity, therefore can increase the service life, the frock compact wheel 6 that continuous extrusion apparatus and this shallow race squeegee roller 4 are supporting, cavity 8, the cross sectional shape of backgauge fast 10 must be identical with the race shape approximation of shallow race squeegee roller 4, therefore can be also rectangle, trapezoidal, the shapes such as ellipse, when shallow race blaster fuse frame material is continuously extruded, blank is by shallow race compact wheel 6 and the 4 actings in conjunction process preformed of shallow race squeegee roller, play the effect that reduces ratio, the continuous extrusion production that is more conducive to the long-pending lead frame product in large width and heavy in section, in shallow race compact wheel 6 courses of work, contact-making surface increases, can reduce surface pressure, increase the service life, shallow race backgauge fast 10 has reduced protruding height, improved the stressing conditions of boss, reduced the destruction of torsional forces, the root crack probability of occurrence of the fast bossing of backgauge reduces, extended backgauge fast service life, shallow entrance of taking turns slot cavity body 8 expands, can allow more deformable metal enter cavity and become product by mould 9, improved the production capacity of unit interval, this shallow race blaster fuse frame material continuous squeezing method, can reduce the difficulty of metal extension forming, and make deformable metal enter the process that cavity is extruded as product from mould to accelerate, enhance productivity, reduce the energy consumption of unit product simultaneously, product processing cost is controlled preferably, the in the situation that of same main shaft diameter, shallow race extrusion equipment can be produced wider, the product that cross section is larger, the cost performance of complete equipment is improved, the market competitiveness of this continuous extrusion apparatus strengthens.
Claims (5)
1. a shallow race blaster fuse frame material continuous squeezing method, is characterized in that, comprises the following steps:
A, blank are pressed in shallow race squeegee roller by shallow race compact wheel;
B, be pressed into blank in the shallow race of squeegee roller along with shallow race squeegee roller rotates together, there is plastic deformation in blank under the driving of frictional force;
C, when blank advance to shallow race backgauge fast after, by the shallow slot cavity body entrance of taking turns, enter the shallow slot cavity body of taking turns, carry out expansion deformation;
Blank after d, expansion deformation is extruded by shallow mould of taking turns in slot cavity body, forms product.
2. the extrusion tooling for a kind of shallow race blaster fuse frame material continuous squeezing method claimed in claim 1, it is characterized in that: comprise frame (1), base (2), main shaft (3), shallow race squeegee roller (4), shallow race compact wheel (6), boots seat (7), the shallow slot cavity body (8) of taking turns, mould (9) and shallow race material blocking block (10), frame (1) is arranged on base (2), main shaft (3) is arranged in frame (1) by bearing, shallow race squeegee roller (4) is arranged on main shaft (3), shallow race compact wheel (6) is arranged on shallow race squeegee roller (4), the bottom of boots seat (7) is connected with frame (1), the shallow slot cavity body (8) of taking turns is arranged in boots seat (7), mould (9) is arranged on shallow wheel in slot cavity body (8), shallow race material blocking block (10) is arranged on shallow race squeegee roller (4) and shallow contact-making surface place of taking turns slot cavity body (8).
3. a kind of extrusion tooling according to claim 2, is characterized in that: the cross section of described shallow race squeegee roller (4) is rectangle, trapezoidal or oval.
4. a kind of extrusion tooling according to claim 2, is characterized in that: described shallow race compact wheel (6), shallow cross section of taking turns slot cavity body (8) and shallow race material blocking block (10) are identical with the wheel groove shape of shallow race squeegee roller (4).
5. a kind of extrusion tooling according to claim 4, is characterized in that: described shallow race compact wheel (6), shallow cross section of taking turns slot cavity body (8) and shallow race material blocking block (10) are rectangle, trapezoidal or oval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310588587.8A CN103611748A (en) | 2013-11-21 | 2013-11-21 | Continuous extrusion method and extrusion tool for lead frame material of shallow wheel trough |
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| CN201310588587.8A CN103611748A (en) | 2013-11-21 | 2013-11-21 | Continuous extrusion method and extrusion tool for lead frame material of shallow wheel trough |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103878551A (en) * | 2014-03-27 | 2014-06-25 | 上海理工大学 | Method for producing high-strength copper nickel silica lead frame material |
| CN105728483A (en) * | 2016-03-30 | 2016-07-06 | 东北大学 | Ultrafine/nanocrystalline metal and short-process and large-deformation preparing method thereof |
| CN110479788A (en) * | 2019-08-20 | 2019-11-22 | 浙江大昌科技有限公司 | A kind of bottom stop device on zipper wire rod uses the machining production line and its processing method of continuous extruding technology |
| CN110576069A (en) * | 2019-10-17 | 2019-12-17 | 大连交通大学 | Continuous stirring friction extrusion production method and production device for metal matrix composite |
| CN110802122A (en) * | 2019-11-19 | 2020-02-18 | 大连交通大学 | Aluminum-clad magnesium composite plate/profile and preparation method thereof |
| CN112756411A (en) * | 2021-01-29 | 2021-05-07 | 重庆鸽牌电线电缆有限公司 | Continuous extrusion method for copper section with ultra-large sectional area |
| CN115228959A (en) * | 2022-07-18 | 2022-10-25 | 山东大学 | Integral extrusion forming equipment for large-size component |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103878551A (en) * | 2014-03-27 | 2014-06-25 | 上海理工大学 | Method for producing high-strength copper nickel silica lead frame material |
| CN105728483A (en) * | 2016-03-30 | 2016-07-06 | 东北大学 | Ultrafine/nanocrystalline metal and short-process and large-deformation preparing method thereof |
| CN110479788A (en) * | 2019-08-20 | 2019-11-22 | 浙江大昌科技有限公司 | A kind of bottom stop device on zipper wire rod uses the machining production line and its processing method of continuous extruding technology |
| CN110479788B (en) * | 2019-08-20 | 2024-02-13 | 浙江大昌科技有限公司 | Processing production line and processing method for zipper upper and lower stop wires by adopting continuous extrusion process |
| CN110576069A (en) * | 2019-10-17 | 2019-12-17 | 大连交通大学 | Continuous stirring friction extrusion production method and production device for metal matrix composite |
| CN110576069B (en) * | 2019-10-17 | 2024-03-22 | 大连交通大学 | Continuous stirring friction extrusion production method and production device for metal matrix composite material |
| CN110802122A (en) * | 2019-11-19 | 2020-02-18 | 大连交通大学 | Aluminum-clad magnesium composite plate/profile and preparation method thereof |
| CN112756411A (en) * | 2021-01-29 | 2021-05-07 | 重庆鸽牌电线电缆有限公司 | Continuous extrusion method for copper section with ultra-large sectional area |
| CN115228959A (en) * | 2022-07-18 | 2022-10-25 | 山东大学 | Integral extrusion forming equipment for large-size component |
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Application publication date: 20140305 |