CN109940816A - A kind of spring Automated mould - Google Patents
A kind of spring Automated mould Download PDFInfo
- Publication number
- CN109940816A CN109940816A CN201910250175.0A CN201910250175A CN109940816A CN 109940816 A CN109940816 A CN 109940816A CN 201910250175 A CN201910250175 A CN 201910250175A CN 109940816 A CN109940816 A CN 109940816A
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- Prior art keywords
- spring
- fixedly connected
- workbench
- mold
- gag lever
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- 238000001746 injection moulding Methods 0.000 claims abstract description 9
- 238000005498 polishing Methods 0.000 claims description 8
- 238000007493 shaping process Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 238000000465 moulding Methods 0.000 abstract description 12
- 239000000243 solution Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of spring Automated moulds, including workbench, fixed frame, bottom plate, feed opening, side plate, hydraulic stem, extension board, mold, first motor, runner, belt, shaft, push rod, fixed link, mold core, screw rod, connecting shaft, connecting plate, gag lever post, electric pushrod, the second motor, grinding wheel and injection molding tube.The structure of the spring Automated mould is simple, it is easy to operate, the cavity of spring shape is formed by the molding cooperation mold core of mold, and be conducive to the molding of spring after being molded by injection molding tube, be conducive to the demoulding of spring by the rotation of mold core and the movement of mold, the production efficiency for improving spring is conducive to improve integrated degree；Be conducive to spring after molding by the movement of gag lever post to be limited, and be conducive to polish to spring appearance by the rotation of grinding wheel, the quality for improving the production of spring is conducive to improve the quality of spring, and the taking-up of the conveniently moving spring by gag lever post.
Description
Technical field
The present invention relates to a kind of mold, specifically a kind of spring Automated mould belongs to spring production applied technical field.
Background technique
Spring is a kind of using the elastic machine components come work, and the part made of elastic material is sent out under external force
Raw deformation restores to the original state again after removing external force, is generally made of spring steel, the complicated multiplicity of the type of spring, by shape point, mainly
Have helical spring, scroll spring, flat spring, heterotypic spring etc., by stress property, spring can be divided into extension spring, compressed spring,
Torsionspring and flexural spring can be divided into disk spring, ring spring, flat spring, helical spring, valute spring by shape
And torsion-bar spring etc., cold coiling spring and hot coiling spring can be divided by manufacturing process, common cylinder spring due to being simple to manufacture,
And various types can be made according to loading conditions, structure is simple, therefore most widely used.
In general the manufacture material of spring currently on the market should have high elastic limit, fatigue limit, impact tough
Property and good heat treatment performance etc., the production of spring generally uses cold coiling method, hot rolling method and casting moulding, still, for
For the moulding by casting of spring, due to needing to demould spring when carrying out the production of spring, the inconvenience of operation, drop are caused
The low production efficiency of spring；And after spring carries out die cast, it is unfavorable for the removal of die parting line, is easy to increase spring surface
Roughness reduces the quality of spring.Therefore, a kind of spring Automated mould is proposed regarding to the issue above.
Summary of the invention
The object of the invention is that providing a kind of spring Automated mould to solve the above-mentioned problems.
The present invention is achieved through the following technical solutions above-mentioned purpose, a kind of spring Automated mould, including installs respectively
Fixed frame and bottom plate, shaping mechanism and workpiece polishing mechanism on workbench top and bottom end, wherein being opened up in the middle part of the workbench
There is feed opening, and the fixed frame side wall is fixedly connected with injection molding tube；
The shaping mechanism includes workbench, fixed frame, side plate, hydraulic stem, extension board, mold, first motor, mold core and spiral shell
Bar, the workbench top are fixedly connected with side plate, and the side plate side wall is fixedly connected with hydraulic stem, and the hydraulic rod end
It is fixedly connected with extension board, the extension board is fixedly connected with the side of mold, and the fixed frame top is fixed with first motor
Connection, the output end of the first motor are fixedly connected with runner, and the runner is passed by belt and the runner on shaft top
Dynamic connection, the shaft bottom end are fixedly connected with push rod, and push rod contact has the side of fixed link, the fixed link and mould
The top of core is fixedly connected, and runs through connection with screw rod in the middle part of the mold core, and the screw rod bottom end is fixedly connected with connecting shaft；
The workpiece polishing mechanism includes workbench, bottom plate, connecting plate, gag lever post, electric pushrod, the second motor and grinding wheel, the work
Make platform bottom end to be fixedly connected with connecting plate, runs through connection, and the limit boom end and electricity in the middle part of the connecting plate with gag lever post
Dynamic push rod is fixedly connected, and workbench bottom end side is fixedly connected with the second motor, and the output end of second motor with
Grinding wheel is fixedly connected.
Preferably, the quantity of the mold is two, and two molds are all in semicircle shape structure, two molds
The outer wall of inner wall and mold core all offers thread-like groove, and the thread-like groove between two molds and mold core is formed with
The cavity of spring structure.
Preferably, the fixed frame is inverted U shape structure and is fixedly connected with bench top two sides, and the bench top is another
Outer two sides are fixedly connected with two side plates respectively, and the fixed frame top middle portion runs through and is rotatablely connected with shaft.
Preferably, the quantity of the hydraulic stem is eight, and hydraulic stem described in every two is fixed with the side wall of extension board respectively
Connection, and the extension board is slidably connected with bench top.
Preferably, the screw rod bottom end is fixedly connected with two connecting shafts, and the diameter of the connecting shaft is less than the straight of mold core
Diameter, and the gag lever post in the middle part of the connecting shaft is square and structure and runs through with connecting shaft and be slidably connected.
Preferably, the quantity of the connecting plate is two, and two connecting plates all run through and slide with two gag lever posts
Connection, and the opening for grinding wheel rotation is offered in the middle part of one of them described connecting plate.
The beneficial effects of the present invention are:
1, the structure of the spring Automated mould is simple, easy to operate, cooperates mold core to form spring shape by the molding of mold
Cavity, and be conducive to the molding of spring after being molded by injection molding tube, it is advantageous by the rotation of mold core and the movement of mold
In the demoulding of spring, the production efficiency of spring is improved, is conducive to improve integrated degree；
2, the spring Automated mould is conducive to spring after molding by the movement of gag lever post and is limited, and passes through grinding wheel
Rotation is conducive to polish to spring appearance, improves the quality of the production of spring, is conducive to the quality for improving spring, and lead to
The taking-up for crossing the conveniently moving spring of gag lever post, improves the convenience of operation.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other attached drawings according to these attached drawings.
Fig. 1 is positive structure diagram of the present invention；
Fig. 2 is side structure schematic view of the present invention；
Fig. 3 is overlooking structure diagram at inventive die.
In figure: 1, workbench, 2, fixed frame, 3, bottom plate, 4, feed opening, 5, side plate, 6, hydraulic stem, 7, extension board, 8, mould
Tool, 9, first motor, 10, runner, 11, belt, 12, shaft, 13, push rod, 14, fixed link, 15, mold core, 16, screw rod, 17, company
Spindle, 18, connecting plate, 19, gag lever post, 20, electric pushrod, the 21, second motor, 22, grinding wheel, 23, injection molding tube.
Specific embodiment
In order to make the invention's purpose, features and advantages of the invention more obvious and easy to understand, below in conjunction with the present invention
Attached drawing in embodiment, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that disclosed below
Embodiment be only a part of the embodiment of the present invention, and not all embodiment.Based on the embodiments of the present invention, this field
Those of ordinary skill's all other embodiment obtained without making creative work, belongs to protection of the present invention
Range.
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
In the description of the present invention, it is to be understood that, term " on ", "lower", "top", "bottom", "inner", "outside" etc. indicate
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention and simplification retouch
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,
Therefore it is not considered as limiting the invention.
It please refers to shown in Fig. 1-3, a kind of spring Automated mould, including being separately mounted to 1 top of workbench and bottom end
Fixed frame 2 and bottom plate 3, shaping mechanism and workpiece polishing mechanism, wherein offering feed opening 4 in the middle part of the workbench 1, and described solid
Determine 2 side wall of frame to be fixedly connected with injection molding tube 23, the injection of the former material for making spring；
The shaping mechanism includes workbench 1, fixed frame 2, side plate 5, hydraulic stem 6, extension board 7, mold 8, first motor 9, mould
Core 15 and screw rod 16,1 top of workbench are fixedly connected with side plate 5, and 5 side wall of side plate is fixedly connected with hydraulic stem 6, and
6 end of hydraulic stem is fixedly connected with extension board 7, and the extension board 7 is fixedly connected with the side of mold 8, the fixed frame 2
Top is fixedly connected with first motor 9, and the output end of the first motor 9 is fixedly connected with runner 10, and the runner 10 is logical
The runner 10 for crossing belt 11 and 12 top of shaft is sequentially connected, and 12 bottom end of shaft is fixedly connected with push rod 13, and described pushes away
Bar 13 contacts the side for having fixed link 14, for the vertically movable of moving-mould-core 15, the top of the fixed link 14 and mold core 15
It is fixedly connected, and connection is run through with screw rod 16 in 15 middle part of the mold core, 16 bottom end of screw rod is fixedly connected with connecting shaft 17；
The workpiece polishing mechanism includes workbench 1, bottom plate 3, connecting plate 18, gag lever post 19, electric pushrod 20, the second motor 21 and sand
Wheel 22,1 bottom end of workbench is fixedly connected with connecting plate 18, and 18 middle part of connecting plate, through connection, is used with gag lever post 19
In the limit of screw rod 16, and 19 end of the gag lever post is fixedly connected with electric pushrod 20, the 1 bottom end side of workbench and the
Two motors 21 are fixedly connected, and the output end of second motor 21 is fixedly connected with grinding wheel 22.
The quantity of the mold 8 is two, and two molds 8 are all in semicircle shape structure, the inner wall of two molds 8
Thread-like groove is all offered with the outer wall of mold core 9, and the thread-like groove between two molds 8 and mold core 9 is formed with
The cavity of spring structure facilitates the demoulding of spring convenient for the molding of spring；The fixed frame 2 is inverted U shape structure and workbench 1
Top surface two sides are fixedly connected, and the other two sides in 1 top surface of workbench are fixedly connected with two side plates 5 respectively, and the fixed frame 2
Top middle portion runs through and is rotatablely connected with shaft 12, convenient for the fixation of hydraulic stem 6, facilitates the rotation of shaft 12；The hydraulic stem 6
Quantity be eight, hydraulic stem 6 described in every two is fixedly connected with the side wall of extension board 7 respectively, and the extension board 7 and work
1 top surface of platform is slidably connected, and convenient for driving the transverse shifting of extension board 7, facilitates the molding of mold 8；16 bottom end of screw rod and two
A connecting shaft 17 is fixedly connected, and the diameter of the connecting shaft 17 is less than the diameter of mold core 15, and the limit at 17 middle part of the connecting shaft
Position bar 19, which is square, structure and to be run through and is slidably connected with connecting shaft 17, convenient for the movement of gag lever post 19, facilitates the blanking of spring；
The quantity of the connecting plate 18 is two, and two connecting plates 18 all run through and are slidably connected with two gag lever posts 19, and its
In offer the opening rotated for grinding wheel 22 in the middle part of a connecting plate 18 and facilitate spring convenient for the movement of gag lever post 19
The polishing on surface.
In the use of the present invention, first by the electric elements external power supply and control switch in the device, by side plate 5
Hydraulic stem 6 elongation drive extension board 71 top surface of workbench slide, push two molds 8 to close up and compressed so that
Mold core 15 is fixed on centre by two molds 8, then is molded by injection molding tube 23, so that the former material of production spring enters mold
In cavity between 8 and mold core 15, after former material cooling and shaping, drives runner 10 to rotate by first motor 9, pass through belt 11
It drives shaft 12 and runner 10 thereon to rotate simultaneously, and then drives the rotation of push rod 13, its both ends is supported respectively after the rotation of push rod 13
Firmly fixed link 14, and then fixed link 14 is driven to rotate simultaneously, so that fixed link 14 rotates simultaneously with moving-mould-core 15, because of square structure
Limit of the gag lever post 19 to screw rod 16, mold core 15 is threadedly coupled with screw rod 16 again so that mold core 15 rotate after vertically movable, mould
Core 15 drives fixed link 14 to move simultaneously so that after 14 side wall of fixed link slides on push rod 13, mold core 15 leave mold 8 it
Between, then pass through the shortening of hydraulic stem 6 so that two molds 8 separate, so that blanking of the spring after molding by 1 middle part of workbench
Mouth 4 is fallen, and then completes blanking；
After spring after molding is fallen on the gag lever post 19 on top, is first shortened by the electric pushrod 20 on top and drive gag lever post
19 in 17 internal slide of connecting shaft, so that connecting plate 18 is left after gag lever post 19 is mobile, so that spring falls in the gag lever post of bottom end
On 19, then by the drive rotation of grinding wheel 22 of the second motor 21, so that grinding wheel 22 polishes to the die parting line of the outer surface of spring,
Be conducive to remove the die parting line formed when spring injection molding, be conducive to the processing quality for improving spring, after the completion of polishing, leads to
The elongation for the electric pushrod 20 for crossing top drives gag lever post 19 to return to original place, carries out continuing to limit to screw rod 16, then pass through bottom end
Electric pushrod 20 shortening so that gag lever post 19 separates with connecting shaft 17 after so that spring is fallen, facilitate the taking-up of spring, mention
High processing efficiency.
First motor 9 and the second motor 21 can be used to be subtracted by the NMRV Series Turbo that the wide Electric Machine Co., Ltd in Zibo provides
Electric motor with speed and its mating power supply and circuit.
For hydraulic stem 6 using the HOB63 hydraulic cylinder of the grand pneumatic flagship store's sale of yolon member, support circuit can be by quotient
Family provides.
Electric pushrod 20 is using the XTL100 electric pushrod of Jiangsu Province Louis producer offer and its mating power supply and circuit.
It is related to circuit and electronic component and module is the prior art, those skilled in the art may be implemented completely,
Without superfluous words, the content that the present invention protects is not related to the improvement for software and method yet.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that by fall in claim with all in the meaning and scope of important document
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although referring to before
Stating embodiment, invention is explained in detail, those skilled in the art should understand that: it still can be to preceding
Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
It modifies or replaces, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (6)
1. a kind of spring Automated mould, it is characterised in that: the fixed frame including being separately mounted to workbench (1) top and bottom end
(2) and bottom plate (3), shaping mechanism and workpiece polishing mechanism, wherein offering feed opening (4) in the middle part of the workbench (1), and it is described
Fixed frame (2) side wall is fixedly connected with injection molding tube (23)；
The shaping mechanism include workbench (1), fixed frame (2), side plate (5), hydraulic stem (6), extension board (7), mold (8),
First motor (9), mold core (15) and screw rod (16), workbench (1) top are fixedly connected with side plate (5), the side plate (5)
Side wall is fixedly connected with hydraulic stem (6), and the hydraulic stem (6) end is fixedly connected with extension board (7), the extension board (7)
It is fixedly connected with the side of mold (8), fixed frame (2) top is fixedly connected with first motor (9), the first motor
(9) output end is fixedly connected with runner (10), and the runner (10) passes through the runner of belt (11) and shaft (12) top
(10) it is sequentially connected, shaft (12) bottom end is fixedly connected with push rod (13), and the push rod (13) contact has fixed link
(14) side, the fixed link (14) are fixedly connected with the top of mold core (15), and the mold core (15) middle part and screw rod
(16) through connection, screw rod (16) bottom end is fixedly connected with connecting shaft (17)；
The workpiece polishing mechanism includes workbench (1), bottom plate (3), connecting plate (18), gag lever post (19), electric pushrod (20), second
Motor (21) and grinding wheel (22), workbench (1) bottom end are fixedly connected with connecting plate (18), in the middle part of the connecting plate (18) with
Gag lever post (19) is through connection, and the gag lever post (19) end is fixedly connected with electric pushrod (20), workbench (1) bottom
End side is fixedly connected with the second motor (21), and the output end of second motor (21) is fixedly connected with grinding wheel (22).
2. a kind of spring Automated mould according to claim 1, it is characterised in that: the quantity of the mold (8) is two
A, two molds (8) are all in semicircle shape structure, and the inner wall of two molds (8) and the outer wall of mold core (9) all offer
Thread-like groove, and the thread-like groove between two molds (8) and mold core (9) is formed with the cavity of spring structure.
3. a kind of spring Automated mould according to claim 1, it is characterised in that: the fixed frame (2) is inverted U shape knot
Structure is fixedly connected with workbench (1) top surface two sides, and the other two sides in workbench (1) top surface are fixed with two side plates (5) respectively
Connection, and the fixed frame (2) top middle portion runs through and is rotatablely connected with shaft (12).
4. a kind of spring Automated mould according to claim 1, it is characterised in that: the quantity of the hydraulic stem (6) is
Eight, hydraulic stem described in every two (6) is fixedly connected with the side wall of extension board (7) respectively, and the extension board (7) and workbench
(1) top surface is slidably connected.
5. a kind of spring Automated mould according to claim 1, it is characterised in that: screw rod (16) bottom end and two
Connecting shaft (17) is fixedly connected, and the diameter of the connecting shaft (17) is less than the diameter of mold core (15), and in the connecting shaft (17)
The gag lever post (19) in portion, which is square, structure and to be run through and is slidably connected with connecting shaft (17).
6. a kind of spring Automated mould according to claim 1, it is characterised in that: the quantity of the connecting plate (18) is
Two, two connecting plates (18) all run through and are slidably connected with two gag lever posts (19), and one of them described connecting plate
(18) middle part offers the opening for grinding wheel (22) rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910250175.0A CN109940816A (en) | 2019-03-29 | 2019-03-29 | A kind of spring Automated mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910250175.0A CN109940816A (en) | 2019-03-29 | 2019-03-29 | A kind of spring Automated mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109940816A true CN109940816A (en) | 2019-06-28 |
Family
ID=67012975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910250175.0A Withdrawn CN109940816A (en) | 2019-03-29 | 2019-03-29 | A kind of spring Automated mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109940816A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2202004A1 (en) * | 1971-01-27 | 1972-08-03 | Taylor Pty Ltd Samuel | Spring arrangement |
| WO1997011826A1 (en) * | 1995-09-25 | 1997-04-03 | Maus Steven M | Molding, ejecting and dipcoating thermoplastic spectacle lens |
| JPH10325433A (en) * | 1997-05-26 | 1998-12-08 | Kato Spring Seisakusho:Kk | Resin made coil spring and manufacture thereof and metal die for injection molding of coil spring |
| JP2001099207A (en) * | 1999-09-28 | 2001-04-10 | Toyo Seikan Kaisha Ltd | Synthetic resin made coil spring, manufacturing method thereof, die used therefor and pump using the same |
| EP1186794A2 (en) * | 2000-09-08 | 2002-03-13 | Toyo Tire & Rubber Co., Ltd . | Vibration isolating bushing |
| JP2005035195A (en) * | 2003-07-16 | 2005-02-10 | Toska Co Ltd | Manufacturing method of coil spring of synthetic resin |
| JP2009000842A (en) * | 2007-06-20 | 2009-01-08 | Erufu Kk | Method of manufacturing synthetic resin made coil spring, intermediate matter of the same, and mold used for manufacturing the same |
| DE102011104071A1 (en) * | 2011-06-11 | 2012-12-13 | Daimler Ag | Method for manufacturing leaf spring that is utilized for function integration of e.g. axle to vehicle, involves melting matrix material in prepeg tape by concentrated introduction of heat when prepeg band is impinged on mold |
| KR101756590B1 (en) * | 2016-06-09 | 2017-07-26 | 안중명 | Mold for manufaturing spring pad mounted onto the end of coil spring for suspension system of vehicle |
| CN210211115U (en) * | 2019-03-29 | 2020-03-31 | 江苏丁是丁精密科技有限公司 | Automatic spring die |
-
2019
- 2019-03-29 CN CN201910250175.0A patent/CN109940816A/en not_active Withdrawn
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2202004A1 (en) * | 1971-01-27 | 1972-08-03 | Taylor Pty Ltd Samuel | Spring arrangement |
| WO1997011826A1 (en) * | 1995-09-25 | 1997-04-03 | Maus Steven M | Molding, ejecting and dipcoating thermoplastic spectacle lens |
| JPH10325433A (en) * | 1997-05-26 | 1998-12-08 | Kato Spring Seisakusho:Kk | Resin made coil spring and manufacture thereof and metal die for injection molding of coil spring |
| JP2001099207A (en) * | 1999-09-28 | 2001-04-10 | Toyo Seikan Kaisha Ltd | Synthetic resin made coil spring, manufacturing method thereof, die used therefor and pump using the same |
| EP1186794A2 (en) * | 2000-09-08 | 2002-03-13 | Toyo Tire & Rubber Co., Ltd . | Vibration isolating bushing |
| JP2005035195A (en) * | 2003-07-16 | 2005-02-10 | Toska Co Ltd | Manufacturing method of coil spring of synthetic resin |
| JP2009000842A (en) * | 2007-06-20 | 2009-01-08 | Erufu Kk | Method of manufacturing synthetic resin made coil spring, intermediate matter of the same, and mold used for manufacturing the same |
| DE102011104071A1 (en) * | 2011-06-11 | 2012-12-13 | Daimler Ag | Method for manufacturing leaf spring that is utilized for function integration of e.g. axle to vehicle, involves melting matrix material in prepeg tape by concentrated introduction of heat when prepeg band is impinged on mold |
| KR101756590B1 (en) * | 2016-06-09 | 2017-07-26 | 안중명 | Mold for manufaturing spring pad mounted onto the end of coil spring for suspension system of vehicle |
| CN210211115U (en) * | 2019-03-29 | 2020-03-31 | 江苏丁是丁精密科技有限公司 | Automatic spring die |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190628 |
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| WW01 | Invention patent application withdrawn after publication |