CN103240838B - Method and moulding for manufacturing moulding - Google Patents
Method and moulding for manufacturing moulding Download PDFInfo
- Publication number
- CN103240838B CN103240838B CN201310040258.XA CN201310040258A CN103240838B CN 103240838 B CN103240838 B CN 103240838B CN 201310040258 A CN201310040258 A CN 201310040258A CN 103240838 B CN103240838 B CN 103240838B
- Authority
- CN
- China
- Prior art keywords
- moulding
- plastics
- region
- protuberance
- spray site
- 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.)
- Expired - Fee Related
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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
- B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
-
- 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
- B29C45/0046—Details relating to the filling pattern or flow paths or flow characteristics of moulding material in the mould cavity
-
- 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
- B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
- B29C2045/0027—Gate or gate mark locations
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)
Abstract
The present invention relates to a kind of method for being used to manufacture the moulding being made up of plastics, moulding is preferably produced at least one spray site of injection mold by the injection of liquefied plastics under stress, the interior shape of injection mold determines the outer shape of moulding, liquefied plastics reach up to the region of dorsad spray site from spray site along main flow direction, and liquefied plastics solidify from the fringe region of moulding towards the direction of nucleus.Moulding（10）Perpendicular to plastics（15）Main flow direction（21、22）Plane in so there is the subregion that expands in cross-section, make the outer shape of moulding has protuberance in the region of subregion（18；18a to 18f）, in plastics（15）Protuberance constitutes nucleus during solidification（23）, plastics（15）In nucleus（23）Middle final set, plastics（15）By nucleus（23）Reach up to moulding（10）Dorsad spray site（16、17）Region（13）In.
Description
Technical field
The present invention relates to a kind of method as described in the preamble for manufacturing moulding according to claim 1.In addition, this
Invention is related to the moulding that a kind of basis is manufactured in the present inventive method.
Background technology
The method as described in the preamble for manufacturing moulding according to claim 1 is known from practice.
It will be added under stress by plastics liquefied in other words of heating in injection mold at this, the plastics are by the injection mould
Tool is filled up.Therefore, the injection mold typically has at least one spray site, plastics are arrived described in the region of the spray site
Up in the Internal periphery of the injection mold.The spray site is arranged in the moulding for slightly with elongated moulding
On side, particularly with such as described slightly with it is necessary to for elongated moulding, the plastics of liquid reach up to described
The region of the dorsad spray site of injection mold, to be solidified in the plastics and to take out moulding from the injection mold
The moulding has desired outline afterwards.For functional reasons, also often it is necessary to, the moulding
Not only there is specific outer shape, but be such as also configured as the structure of the homogeneous in other words of no shrinkage cavity by strength reasons.
For the injection mold known from the prior art, the solidification of the working of plastics is from the wall body of the injection mold towards described
The direction of the core space of moulding is carried out, and the time being liquefied of the plastics described in the region of the core space of the moulding is most
It is long.For the reason for the efficiency as high as possible of injection mold, it is worth pursuing, the composition of the moulding is entered as soon as possible
OK.This causes this point again, i.e. the faster setting time of plastic material itself is also to be worth what is pursued, so as to the modeling
Expect that material can be stripped from the injection mold as soon as possible.The spray site with only specific number for being referred to herein
Component for be it is problematic, if the component when plastics are ejected into injection mold along plastics flow direction have
There is less cross section less cross-sectional area in other words, so that the plastic material is reached in the plastics of enough liquid
Moulding just solidifies before the region of the dorsad spray site of injection mold in the core space referred in other words.If
Such case, that the mass loss referred to of the moulding certainly will just occur.
The content of the invention
From described prior art, task of the invention is so to improve a kind of preceding prelude according to claim 1
Point described method for manufacturing moulding, hence for smaller number of spray site or the moulding along plastics
Also the preferable quality of the moulding is obtained for the less cross-sectional area of flow direction all the time.Preferable quality is herein
Refer in particular to the moulding that constitutes in the case of without shrinkage cavity in other words defect in other words plastic material in moulding in
Uniform distribution.The task is as the present invention in a kind of method for manufacturing moulding with feature described in claim 1
On be resolved in the following manner, i.e., described moulding so has in the plane perpendicular to the main flow direction of the plastics
There is the subregion expanded in cross-section so that the outer shape of the moulding has in the region of the subregion
Protuberance, and the subregion composition nucleus when the plastics solidifys, the plastics in the nucleus most
After solidify, wherein the plastics described in injection moulding process reach up to the dorsad spray site of the moulding by the nucleus
Region.In other words, it means that, the cross section of moulding injection mold in other words is for the reason in manufacturing technology
Rather than so relax and expand in other words in subregion for the strength reasons of moulding, so that in this subregion
Nucleus is constituted, the liquefied plastics solidify in the nucleus and thus prevent plastics from being conveyed to referred to area
The region of the dorsad spray site of the injection mold is reached up to before domain by the nucleus.The present invention is herein using so
Understanding, i.e., described in the subregion of the protuberance cross-sectional area relative to the injection mold be in effect connect
For being cooled down in other words to the solidification of the plastic material among connecing ratio and the protuberance of conclusive outer surface it
Compare ratio super large in outer region.Thus the plastic material in the region of the protuberance in time than with the protuberance
Solidification more completely in adjacent region.
It is described to be advantageously improved scheme in subordinate by the method for being used to manufacture the moulding being made up of plastics of the invention
Listed in claim.All combinations being made up of at least two features disclosed in claim, specification and/or accompanying drawing
Belong to the scope of the present invention.
A kind of arrangement of particularly preferably described spray site, the spray site described in the arrangement and the note
The subregion of the cross section of plastic is aligned, and the protuberance is also in the subregion.Thus liquefied plastics
In the cross section for directly reaching the subregion with the expansion, that is to say, that be added under high pressure in the injection mold
Plastics the bossed portion of the tool can be directly reached in the case of not further flow losses and without cooling down
In subregion.
In order to realize the efficiency as high as possible of pitch time as the few as possible that is injection mold, remove
Proposed beyond this, the injection mold is configured to the injection mold being cooled.
In a kind of preferred design in structure of the protuberance of the moulding, the protuberance has part circular
Or rectangle cross section, the cross section is raised from the flat wall body section of the moulding.
In addition, the nucleus can expand the size swelled in other words and can correspondingly reduce, if set
Two protuberances for being arranged symmetrically on symmetrical plane.
In addition, the present invention is preferably used on the relatively thin moulding of wall body.Especially provide herein, the surrectic structure is described
In the tab shaped of moulding or the region of rib strip shaped, wherein the region is with least basic along the flow direction of the plastics
Upper identical cross section.By the use along the flow direction of plastics at least substantially identical cross section, obtain herein so
Advantage, i.e., any local solidification zone is not constituted in the nucleus, the solidification zone becomes the flowing of plastics
It is difficult.
It is particularly preferred that the protuberance is at least substantially described in the last-mentioned design of the protuberance
Stretched in the range of the whole axial elongation in region.
In addition, methods described can manufacture corresponding moulding, wherein in the dorsad spray site of the moulding
A region expanded in cross-section is connected on the protuberance on side.Just for such moulding, especially
It is important or it is essential that completely filled up the region expanded in cross-section with plastics.It is particularly critical herein,
The position of the spray site is selected on the opposed side in the region expanded in cross-section.
Another design regulation of the moulding, the moulding has the area of multiple tab shapeds or rib strip shaped
Each region in domain, and the region has spray site.Thus the efficiency of the injection mold is on the one hand improved, and
On the other hand ensure even for can be also fully filled with for less pitch time with plastics the injection mold and
It is derived from the preferable quality of the moulding.
It is preferred that the present invention is with corresponding moulding, the moulding is the comfortableness drive device such as car of motor vehicle
The part of window glass lifter drive device, seat regulation drive device or the housing member in similar drive device.
Brief description of the drawings
The present invention further feature, advantage and details from below in preferred embodiment description and by means of
Accompanying drawing is obtained.Accompanying drawing is shown below：
Fig. 1 is the vertical section of the injection mold by prior art；
Fig. 2 a to 2e be Fig. 1 in moulding of plastics plane II-II in process of setting different at the time of；
Fig. 3 is the cross section in the case where using the protuberance by the present invention of moulding；
Fig. 4 a to 4e are the cross sections in Fig. 2 plane III-III of the process of setting of plastics；And
Fig. 5 to 7 is the corresponding cross section of the different designs of the protuberance by the present invention on moulding.
The component with identical function is denoted by the same reference numerals identical component in the accompanying drawings in other words.
Embodiment
Figure 1 illustrates the injection mold 100 by prior art.The injection mold 100 exemplarily includes two moulds
Has halfbody 101,102, the two mold halfs can be movable with respect to each other along the direction of double-head arrow 103,104 in other words can
Removed from top of one another.The injection mold 100 is used to manufacture the moulding 110 being made up of plastics, and the moulding is in embodiment
In be configured with height H square and the cross section with length is l and width is b rectangle（Fig. 2）.It is described two
The Internal periphery of mold half 101,102 determines the outline of the moulding 110 herein, wherein described two transport relative to each other
Dynamic mold half 101,102 constitutes die joint 105.In addition, in the moulding 110 injection mold 100 in other words（Above
's）On end face, spray site 106 is constructed in the form of a hole, and the plastics of its fusing point will be heated beyond in pressure by the spray site
Under be added in the injection mold 100.
Fig. 2 a to 2e respectively illustrate the moulding 110 in the injection mold 100 manufacture the moulding 110 not
With at the time of in schematic diagram in plane II-II.Therefore it can be seen that and add at this moment at the moment earlier in fig. 2 a
Enter to the plastic material 108 in the injection mold 100 and be completely in liquid phase 111.Plastic material 108 is being ejected into injection
After in mould 100, the plastic material 108 solidifies, wherein wall body section of the process of setting from the injection mold 100
Set out, and the direction of the nucleus 109 towards the moulding 110 continues.The liquid is can be seen that by means of Fig. 2 b to 2d
The size of phase 111 continuously declines, and solid phase 112 then occupies the increasing cross section of the moulding 110 simultaneously.In Fig. 2 e
In a moment is shown, plastic material 108 described in the moment completely solidify, that is to say, that the cross section of the moulding 110
Constituted completely with solid phase 112.
Figure 3 illustrates the moulding 10 by the present invention, the moulding prolongs substantially perpendicular to Fig. 2 drawing plane
Stretch.The moulding 10 includes the region 11,12 arranged relative to each other with acute angle of two rib strip shapeds tab shaped in other words.This
Two regions 11,12 are imported in the region 13 of general toroidal, and the region 13 has the circular space 14 for being used for receiving spare part.
Such as glass regulator drive device, the seat regulation of the comfortableness drive device of the moulding 10 especially motor vehicle is driven
The part of dynamic device or the housing member not being shown specifically in similar drive device.
The moulding 10 is constituted by the way that plastics 15 are ejected into the injection mold not being shown specifically into this mode, should
The interior shape of injection mold determines the outline of the moulding 10 outer shape in other words.The note for moulding 10
Mould by Fig. 1 injection mold 100 herein in principle as equally being constituted, that is to say, that can be used without heating
Injection mold 100.It is important in this that, the plastics 15 are in the region in described two regions 11,12 in dorsad region 13
It is added to respectively in spray site 16,17 in the injection mold on side.Fig. 4 a to 4e show described two（Identical）
The cross section in Fig. 3 plane IV-IV in region 11,12.This can be seen that, described two substantially gathering around with rectangle
The region 11,12 for having length l and width b cross section possesses protuberance 18 in central region, and the protuberance is with circular section 19
Form is raised from the wall body 20 flat in other side in the region 11,12.The spray site 16,17 preferably with it is described
The mode of the surface center of gravity alignment in region 11,12 is arranged.
Fig. 4 a to 4e show the different when plastics 15 are ejected into the injection mold of the region 11,12
The diagram similar with Fig. 2 a to 2e diagram at moment.It is important in this that, by described two regions 11,12 also to described
With the big cross section in than two regions 11,12 in other words cross-sectional area region 13 supply plastics 15.It is so outer by means of
As Fig. 3 finds out, the protuberance 18 is stretched over the region always in the range of the whole length in the region 11,12
13.In addition, the main flow direction of the plastics 15 is shown by the arrow 21,22, the main flow direction is in injection
Produced during liquefied and plastics 15 under high pressure in the spray site 16,17.
A kind of state is shown in fig .4, and whole plastics 15 also have in the plastics 15 for the state
Temperature on fusing point.In this case, the plastics in the range of the region 11 in other words 12 whole cross section
15 are in liquid phase 26.The wall body section appearance from the moulding 10 is can be seen that by means of Fig. 4 b to 4e figure sequence
The nucleus 23 with liquid phase 26 of continuous diminution, described in the nucleus 23 plastics 15, which have, is in the modeling
Temperature on the fusing point of material 15.Thus, plastics 15 may also pass through the nucleus 23 reach the moulding 10 with
Region 13 on the opposed side of spray site 16,17, for the region 13 to be filled up with plastics 15 completely.
Thus the present invention provides, in the main flow direction perpendicular to the plastics 15（Arrow 21,22）Plane in construct
At least one protuberance 18, the protuberance so expands the cross section in the region 11,12, so that straight when the plastics 15 solidify
To it is slower at the time of maintain nucleus 23, plastics 15 can reach the remote of the moulding 10 by the nucleus 23
In the region of corresponding spray site 16,17, reach in the embodiment illustrated in the region 13.
Protuberance 18a on region 11a, 11b 18b in other words is shown in figs. 5 a and 5 b, otherwise the protuberance only exists
Or extension extends on the side opposite each other of the region 11b on the side of the region 11a, wherein in the region
Described two protuberance 18b are arranged symmetrically on plane 24 in the case of extending on 11b side opposite each other.The protuberance
18a, 18b substantially quadrant in cross-section, and described protuberance 18c, 18d are then corresponding for Fig. 6 a in other words 6b
Ground is semicircle, wherein the protuberance 18d extends on the both sides of the region 11d.In contrast to this, shown for Fig. 7 a
Protuberance 18e, the protuberance is only constituted on the side of the region 11e, wherein the protuberance 18e has the transversal of rectangle
Face.A kind of design is finally shown in fig .7b, and two are existed in the design and swells 18f, it is described two grand
Rise and extending on plane 24f in the case of symmetrical from the both sides of the region 11f.
Generally described moulding 10 can in other words be changed with diversified methods to change, without inclined
From inventive concept.The inventive concept is the cross section that composition one expands in subregion on the moulding 10,
The liquefied plastics 15 can by the cross section until the plastics 15 solidification it is slower at the time of in the injection
The delivered inside of part 10.Especially the present invention should not be limited to the use of special plastics component in other words.More precisely, can
To use all materials generally used in injection moulding.Extraly to mention herein, in the accompanying drawings unshowned injection mold
Be configured to not heated injection mold, the injection mold particularly by the cooling carried out by means of cooling water channel can realize compared with
High efficiency.To mention in addition, plastics 15 are it should also be appreciated that such as to include fiber such as glass fibre or carbon fiber
Additive plastics 15 so that the moulding 10 of the solidification constitutes so-called GFK（Carbon fiber plastic）CFK in other words（Carbon
Fibre reinforced plastics）Part.
Claims (12)
1. for manufacturing the moulding for including plastics（10）Method, wherein the moulding（10）In injection mold（100）'s
At least one spray site（16、17）It is upper to pass through liquefied plastics（15）Injection and produce, the interior shape of the injection mold
Determine the moulding（10）Outer shape, wherein the liquefied plastics（15）From the spray site（16、17）Along main flow
Dynamic direction（21、22）Reach up to the dorsad spray site（16、17）Region（13）, and wherein described liquefied plastics
（15）From the moulding（10）Fringe region towards nucleus（23）Direction solidification,
Characterized in that,
The moulding（10）Perpendicular to the plastics（15）Main flow direction（21、22）Plane in so have in horizontal stroke
The subregion expanded in section so that the moulding（10）Outer shape in the region of the subregion have it is grand
Rise（18；18a to 18f）, and in the plastics（15）Protuberance during solidification（18；18a to 18f）Constitute nucleus
（23）, the plastics（15）In the nucleus（23）Middle final set, wherein the plastics described in whole injection moulding process
（15）By the nucleus（23）Reach up to the moulding（10）Dorsad spray site（16、17）Region（13）
In.
2. the method as described in claim 1,
Characterized in that,
The spray site（16、17）With the moulding（10）The subregion of cross section be aligned, the protuberance
（18；18a to 18f）It is also in the subregion.
3. the method as described in claim 1 or 2,
Characterized in that,
It is used as injection mold（100）And use the injection mold being cooled（100）.
4. the method as described in claim 1 or 2,
Characterized in that,
The moulding（10）Pass under pressure through the injection and produce.
5. moulding, method according to any one of as claim 1 to 4 is made, it is characterised in that
The protuberance（18；18a to 18f）With part circular or rectangle cross section and from flat wall body section
（20）Upper projection.
6. the moulding as described in claim 5,
Characterized in that,
There is provided two on symmetrical plane（24；24f）The protuberance being arranged symmetrically（18b；18d；18f）.
7. the moulding as described in claim 5,
Characterized in that,
The protuberance（18；18a to 18f）Construction is in the moulding（10）Tab shaped or rib strip shaped region（11；11a
To 11f；12）In, wherein the region of the tab shaped or rib strip shaped（11；11a to 11f；12）With along the plastics（15）
Flow direction（21、22）At least substantially identical cross-sectional area.
8. the moulding as described in claim 7,
Characterized in that,
The protuberance（18；18a to 18f）At least substantially in the tab shaped or the region of rib strip shaped（11；11a to 11f；
12）Whole axial elongation in the range of stretch.
9. the moulding as described in claim 5,
Characterized in that,
In the moulding（10）Dorsad spray site（16、17）Side on the region that expands in cross-section（13）Even
It is connected to the protuberance（18；18a to 18f）On.
10. the moulding as described in claim 6,
Characterized in that,
The moulding（10）Region with multiple tab shapeds or rib strip shaped（11；11a to 11f；12）, and the contact pin
The region of shape or rib strip shaped（11；11a to 11f；12）In each tab shaped or rib strip shaped region have spray site
（16、17）.
11. the moulding as described in claim 10,
Characterized in that,
The moulding（10）Be motor vehicle comfortableness drive device in housing member part.
12. the moulding as described in claim 11,
Characterized in that, the comfortableness drive device is configured to glass regulator drive device or seat regulation driving
Device.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201210201531 DE102012201531A1 (en) | 2012-02-02 | 2012-02-02 | Method for producing injection molded portion e.g. window lifter drive, involves making liquefied plastic material to pass to injection points of molded portion such that protrusion is formed according to outer shape of molded portion |
| DE102012201531.0 | 2012-02-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103240838A CN103240838A (en) | 2013-08-14 |
| CN103240838B true CN103240838B (en) | 2017-10-31 |
Family
ID=48794589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310040258.XA Expired - Fee Related CN103240838B (en) | 2012-02-02 | 2013-02-01 | Method and moulding for manufacturing moulding |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103240838B (en) |
| DE (1) | DE102012201531A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016103566A1 (en) * | 2016-02-29 | 2017-08-31 | Oelschläger Metalltechnik GmbH | Telescopic table frame component, method for producing a sliding guide and apparatus for carrying out the method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5840228A (en) * | 1996-10-08 | 1998-11-24 | Ritchey; Eugene B. | Method of creating indicia on a molded article |
| CN1575953A (en) * | 2001-05-31 | 2005-02-09 | 大和化成工业株式会社 | Injection molding method and injection molding apparatus |
| CN101554764A (en) * | 2008-04-07 | 2009-10-14 | 东海兴业株式会社 | Product having injection molded portion, method of manufacturing the product, and apparatus for manufacturing the product |
| CN101758594A (en) * | 2008-12-11 | 2010-06-30 | 天津西林环氧树脂灌封设备设计中心 | High-viscosity material pressing-in device |
| CN101998900A (en) * | 2008-04-12 | 2011-03-30 | 福士汽车配套部件责任有限公司 | Method for producing a moulded part with an annular cross-section and moulded part produced according to a method of this type |
-
2012
- 2012-02-02 DE DE201210201531 patent/DE102012201531A1/en not_active Withdrawn
-
2013
- 2013-02-01 CN CN201310040258.XA patent/CN103240838B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5840228A (en) * | 1996-10-08 | 1998-11-24 | Ritchey; Eugene B. | Method of creating indicia on a molded article |
| CN1575953A (en) * | 2001-05-31 | 2005-02-09 | 大和化成工业株式会社 | Injection molding method and injection molding apparatus |
| CN101554764A (en) * | 2008-04-07 | 2009-10-14 | 东海兴业株式会社 | Product having injection molded portion, method of manufacturing the product, and apparatus for manufacturing the product |
| CN101998900A (en) * | 2008-04-12 | 2011-03-30 | 福士汽车配套部件责任有限公司 | Method for producing a moulded part with an annular cross-section and moulded part produced according to a method of this type |
| CN101758594A (en) * | 2008-12-11 | 2010-06-30 | 天津西林环氧树脂灌封设备设计中心 | High-viscosity material pressing-in device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103240838A (en) | 2013-08-14 |
| DE102012201531A1 (en) | 2013-08-08 |
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Granted publication date: 20171031 Termination date: 20220201 |