CN1263817A - Injection forming method for part capable of relative rotating each other - Google Patents
Injection forming method for part capable of relative rotating each other Download PDFInfo
- Publication number
- CN1263817A CN1263817A CN99126118.6A CN99126118A CN1263817A CN 1263817 A CN1263817 A CN 1263817A CN 99126118 A CN99126118 A CN 99126118A CN 1263817 A CN1263817 A CN 1263817A
- Authority
- CN
- China
- Prior art keywords
- blade
- mould
- bar
- molded
- axle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002347 injection Methods 0.000 title claims abstract description 16
- 239000007924 injection Substances 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims description 19
- 239000004033 plastic Substances 0.000 claims abstract description 13
- 229920003023 plastic Polymers 0.000 claims abstract description 13
- 238000001746 injection moulding Methods 0.000 claims abstract description 5
- 238000009423 ventilation Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 11
- 230000008602 contraction Effects 0.000 claims description 6
- 230000004888 barrier function Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 abstract description 5
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 240000005373 Panax quinquefolius Species 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0017—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor moulding interconnected elements which are movable with respect to one another, e.g. chains or hinges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0017—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor moulding interconnected elements which are movable with respect to one another, e.g. chains or hinges
- B29C2045/0022—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor moulding interconnected elements which are movable with respect to one another, e.g. chains or hinges using deformation of injected material to obtain interconnection
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Abstract
An injection moulding process for a bar/blade assembly for ventilation of a motor vehicle passenger space is characteristic that: In a first moulding phase, in a first impression in the bi-injection mould and with the aid of pins 4, blades 1 are injection moulded. These blades are removed from the mould and are transferred into a second impression in the bi-injection mould by rotating the carriage. Pins 5 are introduced into the conical cavities of the axes 3 obtained during the first moulding phase and make it possible to open out the ends 6 of these cavities to thus obtain a permanent plastic deformation of the axes 3 at this point. In a second moulding phase, the bars 2 are over-moulded by injection.
Description
The present invention relates to a kind of ejection forming method, it is used for producing whole link to each other and can be at the part, the particularly bar/blade assembly of motor vehicle occupant area ventilation usefulness that relatively rotate with respect to each other and move.
Nearly recent decades, the plastics industry development uses various plastics to produce a large amount of mill runs by ejection forming method rapidly.
The part that these products are linked to each other and can be moved in relatively rotating with respect to each other by integral body often; These products are produced by following mode traditionally: with first kind of molded first part of plastics, be lower than second kind of plastics Overmolded on first part (over-moulding), second part of first kind of plastics then with fusing point; First part constitutes a part of mould in this Overmolded process.
The reason that said method is difficult to carry out is, can not dismantle but the two parts assembly that can move in rotation wherein in order to make one, must at first molded part barrier structure be set, and this will cause problem when part is taken out mould.
In order to overcome the problems referred to above, generally use the mould that constitutes by a plurality of parts, and this may be in the scrambling that forms off-load on the part that is molded on the branch mould plane of mould each several part.
But in order to obtain the effect that is entirely satisfactory, the connection surface that must become between two parts of plane of rotation must be very smooth.
The professional has proposed to overcome the various measures of above-mentioned scrambling, and from a technical standpoint, these measures are entirely satisfactory.But these measures are got up very complicated, thereby need very expensive equipment, so be not so good as people's will from economic angle.
The purpose of this invention is to provide a kind of ejection forming method that overcomes the problems referred to above, be used for producing whole link to each other and can be at the part that relatively rotates with respect to each other and move, it adopts a kind of double injection mould and swivel mount cooperating, is all making us very satisfied aspect technology and economical two.
This method is particularly suitable for the injection moulding of the bar/blade assembly of motor vehicle occupant district ventilation usefulness, certainly, also can be used for producing other products and does not exceed scope of the present invention.
According to the present invention, this method is characterised in that:
-in the first molded stage, by pin primary circle tapered hollow axle injection moulding blade, described quill shaft has low barrier strength and constitutes the axis that relatively rotates of described part in first die cavity in the double injection mould,
-take out above-mentioned blade from mould,
-rotation by swivel mount changes blade in second die cavity in the double injection mould over to,
-pin is fed in the conical hole of the axle that obtains in the first molded stage, so that expand the end in above-mentioned hole, thereby obtain the permanent plastic deformation of axle in this position, and
-in the second molded stage, at least in part around in the past by the quill shaft of the blade of pin expansion, by injecting Overmolded bar.
Obviously, said method can guarantee the relatively rotating on the surperficial conical outer wall without any scrambling corresponding to blade and bar at each.
The blade of the air grid in motor vehicle occupant district generally must be higher than 250 ℃ manufacture of materials with fusing point because of its function.
Therefore, according to another feature of the present invention, at first the blade of Sheng Chaning is molded with the plastics of about 260 ℃ of fusing points.
Certainly, the second molded bar material therefor must fusing point be lower than the fusing point of the material that forms blade, and the plastics that the most handy fusing point is about 200 ℃ are molded.
The molded order that should be noted in the discussion above that two parts (blade and bar) is equivalent to a particularly advantageous characteristics of the present invention, and this is owing to can produce the cause of bar with low-melting common material; But if molded reversed in order has been not this situation just, like that just the material that must select fusing point to be higher than 260 ℃ is produced bar, and this can significantly increase the cost price of assembly.
Should also be noted that the existence meeting with quill shaft of block piece causes difficulty in the process of taking out from mould when the first molded stage finished.
But this problem can be by firmly being overcome from mould taking-up blade or by the contraction that utilizes moulding material, and for the operation that need not force firmly to take out from mould, above-mentioned contraction generally should be about 1%.
According to the present invention, the permanent deformation that forms the axle head of the contraction of thermoplastic of bar and blade is easily to control two parameters of value of the brake force of blade rotation.Specifically, after molded finishing, above-mentioned brake force is subjected to the control of the additional parameters such as temperature, injection pressure, press time, cool time and whole circulation time of thermoplastic in the injection process.
Contrast the following drawings describes the feature according to ejection forming method of the present invention in detail now.
Fig. 1 is a partial sectional view, and its top (X-X axis top) corresponding to the first molded stage, and its underpart (X-X ' the axis below) corresponding to the second molded stage.
With reference to the accompanying drawings, in the first molded stage, blade 1 is the injection molding of plastics with about 260 ℃ of fusing points, and in the second molded stage, to the Overmolded bar 2 of plastics of about 200 ℃ of blade 1 usefulness fusing points.
According to the top of Fig. 1, blade molded be with the double injection mould of a swivel mount cooperating in the first time carry out in the compacting.
The blade of making in this stage is to produce with the hollow cone oblique crank Z 3 with low-resistance retaining intensity, constitutes the rotational axis x-X ' of blade 1 and bar 2.
Should be noted that, after the first molded stage, take out blade 1 by power or by the contraction that utilizes the material that forms blade from mould, change in second die cavity in the double injection mould by the rotation of swivel mount then, enter Fig. 1 bottom and position shown in Figure 2, so that carry out the Overmolded of bar 2 by injection.
Above-mentioned Overmolded before, the conical hole that the pin 5 (Fig. 1) of suitable shape or 5 ' (Fig. 2) are introduced axle 3 so that expanded end 6, thereby makes above-mentioned axle obtain permanent plastic deformation.
Then, carry out the Overmolded of bar 2 around axle 3.
Obviously, the blade of making like this 1 and bar 2 be whole to link to each other and can center on axis X '-X is in the middle motion that relatively rotates with respect to each other.
In addition, axle 3 in last rotation corresponding to the outer surface 7 of the contact area of blade 1 and bar 2 be smooth, without any blemish.
Claims (5)
1. ejection forming method, it uses and the whole part that links to each other and can move in rotation respect to one another of double injection mould production of a swivel mount cooperating, particularly produces the bar/blade assembly of motor vehicle occupant district ventilation usefulness, it is characterized in that:
-in the first molded stage, in first die cavity in the double injection mould by pin (4) with primary circle tapered hollow axle (3) injection moulding blade (1), what described quill shaft had low barrier strength and constituted described part (1,2) relatively rotates axis (X-X ')
-take out above-mentioned blade from mould,
-rotation by swivel mount changes blade in second die cavity in the double injection mould over to,
-pin (5,5 ') is fed in the conical hole of the axle (3) that obtains in the first molded stage, so that expand the end (6) in above-mentioned hole, thereby obtain the permanent plastic deformation of axle (3) in this position, and
-in the second molded stage, at least in part around in the past by the quill shaft (3) of the blade (1) of pin (5,5 ') expansion, by injecting Overmolded bar (2).
2. the method for claim 1 is characterized in that: blade (1) is molded with the material of about 260 ℃ of fusing points, and bar (2) is Overmolded around blade (1) with the material of about 200 ℃ of fusing points.
3. as each described method in claim 1 and 2, it is characterized in that: after the first molded stage, blade (1) takes out from mould by power.
4. as each described method in claim 1 and 2, it is characterized in that: the process of taking out blade (1) from mould, utilize the contraction of the material that forms blade.
5. as each described method in the claim 1 to 4, it is characterized in that: the permanent deformation that forms the axle head of the contraction of material of bar (2) and blade (1) is to control two parameters of the value of the brake force that blade (1) rotates.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9815584 | 1998-12-10 | ||
| FR9815584A FR2787054A1 (en) | 1998-12-10 | 1998-12-10 | INJECTION MOLDING METHOD FOR MOBILE ROTATING ELEMENTS IN RELATION TO OTHERS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1263817A true CN1263817A (en) | 2000-08-23 |
Family
ID=9533809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99126118.6A Pending CN1263817A (en) | 1998-12-10 | 1999-12-10 | Injection forming method for part capable of relative rotating each other |
Country Status (8)
| Country | Link |
|---|---|
| CN (1) | CN1263817A (en) |
| BE (1) | BE1012591A3 (en) |
| BR (1) | BR9905825A (en) |
| DE (1) | DE19959656A1 (en) |
| ES (1) | ES2166295B1 (en) |
| FR (1) | FR2787054A1 (en) |
| GB (1) | GB2344557B (en) |
| IT (1) | IT1314268B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19950039C1 (en) * | 1999-10-16 | 2001-04-26 | Bayerische Motoren Werke Ag | Manufacturing process for a plastic injection molded component consisting of at least two components |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2607957A (en) * | 1951-01-02 | 1952-08-26 | Elmer L Danielson | Method for forming a composite plastic structure |
| US2609570A (en) * | 1951-01-22 | 1952-09-09 | Elmer L Danielson | Method for forming a multipart plastic article |
| US3917789A (en) * | 1973-02-20 | 1975-11-04 | Raymond A Heisler | Method for molding a plastic container having a molded handle pivotally retained by an integrally formed attachment |
| US4125246A (en) * | 1976-11-05 | 1978-11-14 | Holdt J W Von | Pivot assembly mold apparatus |
| DE3637462A1 (en) * | 1986-11-04 | 1988-05-05 | Draexlmaier Lisa Gmbh | Process for producing swivel bearings for sun visors and sun visor produced by this process |
| CA1328158C (en) * | 1988-05-11 | 1994-04-05 | Toshiyuki Kanai | Multi-injection molded body, a method of molding for the same, and a multi-injection molding machine |
| DE4202351C2 (en) * | 1992-01-29 | 1995-01-19 | Fickenscher & Co Gmbh Werkzeug | Process for injection molding objects from at least two parts |
| GB2271843B (en) * | 1992-10-20 | 1996-08-28 | Moriroku Kk | Air-conditioning blow-out port unit and process for manufacturing the same |
| FR2724343B1 (en) * | 1994-09-08 | 1996-11-08 | Grosfilley Jean Pierre | METHOD OF MANUFACTURING AERATORS FOR MOTOR VEHICLES |
| DE4442875C1 (en) * | 1994-11-17 | 1996-02-08 | Bayerische Masindustrie Arno K | Plastic ruler |
| DE29904248U1 (en) * | 1999-03-09 | 1999-05-27 | Oleff & Holtmann Olho Tech | Two rotatable injection molded parts |
-
1998
- 1998-12-10 FR FR9815584A patent/FR2787054A1/en active Pending
-
1999
- 1999-12-06 IT IT1999MI002551A patent/IT1314268B1/en active
- 1999-12-06 BE BE9900794A patent/BE1012591A3/en not_active IP Right Cessation
- 1999-12-08 GB GB9929042A patent/GB2344557B/en not_active Expired - Fee Related
- 1999-12-09 ES ES009902699A patent/ES2166295B1/en not_active Expired - Lifetime
- 1999-12-10 DE DE19959656A patent/DE19959656A1/en not_active Ceased
- 1999-12-10 CN CN99126118.6A patent/CN1263817A/en active Pending
- 1999-12-10 BR BR9905825-1A patent/BR9905825A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| ES2166295A1 (en) | 2002-04-01 |
| GB2344557A (en) | 2000-06-14 |
| FR2787054A1 (en) | 2000-06-16 |
| ES2166295B1 (en) | 2003-10-01 |
| BE1012591A3 (en) | 2000-12-05 |
| GB2344557B (en) | 2002-01-16 |
| ITMI992551A0 (en) | 1999-12-06 |
| ITMI992551A1 (en) | 2001-06-06 |
| DE19959656A1 (en) | 2000-07-06 |
| IT1314268B1 (en) | 2002-12-06 |
| BR9905825A (en) | 2001-10-09 |
| GB9929042D0 (en) | 2000-02-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |