DK161061B - SPRAY OPENING TOOL OF STACKABLE CONTAINERS - Google Patents
SPRAY OPENING TOOL OF STACKABLE CONTAINERS Download PDFInfo
- Publication number
- DK161061B DK161061B DK047486A DK47486A DK161061B DK 161061 B DK161061 B DK 161061B DK 047486 A DK047486 A DK 047486A DK 47486 A DK47486 A DK 47486A DK 161061 B DK161061 B DK 161061B
- Authority
- DK
- Denmark
- Prior art keywords
- tool
- cavity
- wall
- injection
- cavities
- Prior art date
Links
- 239000007921 spray Substances 0.000 title 1
- 238000001746 injection moulding Methods 0.000 claims abstract description 13
- 229920003023 plastic Polymers 0.000 claims abstract description 5
- 239000004033 plastic Substances 0.000 claims abstract description 5
- 238000002347 injection Methods 0.000 claims description 26
- 239000007924 injection Substances 0.000 claims description 26
- 238000005192 partition Methods 0.000 claims description 10
- 239000012778 molding material Substances 0.000 claims description 7
- 239000011796 hollow space material Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 3
- 238000000465 moulding Methods 0.000 description 8
- 238000005266 casting Methods 0.000 description 7
- 239000008187 granular material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
-
- 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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2701—Details not specific to hot or cold runner channels
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7134—Crates, e.g. for bottles
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Devices For Opening Bottles Or Cans (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
iin
DK 161061 BDK 161061 B
Opfindelsen angår et værktøj til sprøjtestøbning af stabelbare beholdere af plast med mindst én flervægget væg, hvis delvæggs mindst begrænser et hulrum, hvilket værktøj består af en kerne og en ydre form, der kan forskydes relativt i forhold til hin-5 anden og som i lukket stilling aflukker hulrum til at optage sprøjtestøbemateriale, hvilket sprøjtestøbemateriale via indsprøjtningskanaler ved forskellige steder sprøjtes ind i hulrummene, og hvor der mindst for den ydre delvæg af den fler-væggede væg er tilvejebragt mindst én indsprøjtningskanal. Et 10 sådant værktøj fremgår af EP patent-skrift nr. 0.019.336.BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a tool for injection molding of stackable plastic containers having at least one multi-walled wall, the part wall of which at least limits a cavity, which tool consists of a core and an outer mold which can be displaced relative to each other and as closed. position closes cavities for receiving injection molding material, which injection molding material is injected into the cavities at various locations at various locations, and where at least one injection channel is provided for at least one outer wall of the multi-walled wall. One such tool is disclosed in EP patent specification 0.019.336.
De beholdere, der kan fremstilles med dette værktøj, kan f.eks. være kasseformede, med rektangulært eller kvadratisk tværsnit. De kan da også formes cirkulære eller ovalt. IThe containers that can be made with this tool can e.g. be box-shaped, of rectangular or square cross-section. They can then also be shaped circular or oval. IN
15 brugsstilling er beholderne opadtil åbne. De benyttes f.eks.In the operating position, the containers are open upwards. They are used e.g.
som transportbeholdere til flasker, dåser, poser, granulater, pulvere eller væsker. "Flervægget" betyder, at den pågældende væg mindst omfatter to delvægge, altså er udformet med en dobbeltvæg. Der kan imidlertid også forefindes tre eller flere 20 delvægge. Beholderne skal dels være stabile nok til at kunne optage et større antal af sådanne genstande eller også tungere genstande, og dels skal de være lette for, at de selv bidrager så lidt som muligt til totalvægten. Det er derfor kendt at afforme sådanne beholdere, ikke med massive vægge, men flervæg-25 get, hvorved der mellem de almindeligvis ved lister forbundne delvægge er indesluttet hulrum. Sådanne vægge er ved mindre materialeforbrug mekanisk mere stabile end i ét formede vægge, og beholderen bliver ved hjælp af hulrummenes indelukker i alt lettere.as transport containers for bottles, cans, bags, granules, powders or liquids. The "multi-wall" means that the wall in question comprises at least two partitions, ie a double wall. However, there may also be three or more 20 part walls. The containers must be partly stable enough to accommodate a larger number of such objects or also heavier objects, and partly they must be light so that they themselves contribute as little as possible to the total weight. Therefore, it is known to mold such containers, not with solid walls, but multi-walled, whereby the generally partitioned walls are enclosed. Such walls are mechanically more stable under smaller materials consumption than in one-shaped walls, and the container is made lighter by means of the cavities enclosures.
3030
De af plast bestående beholdere fremstilles ved sprøjtestøbning. Et hertil egnet værktøj fremgår af det indledningsvist omtalte EP patentskrift nr. 0.019.336. sprøjtestøbematerialet indsprøjtes ved dette kendte værktøj via et antal indsprøjt-35 ningskanaler ind i værktøjets hulrum. Indsprøjtningskanalerne er ved dette værktøj for størstedelen anbragt således, at de ved beholdernes afformning ikke forstyrrer de på disse forbli-The plastic containers are made by injection molding. A suitable tool for this is disclosed in the EP patent specification No. 0.019,336 mentioned above. the injection molding material is injected into this known tool via a plurality of injection channels into the tool cavity. The injection channels are, for the most part, arranged in this tool so that, when the containers are formed, they do not interfere with the remainder.
DK 161061 BDK 161061 B
2 vende stiftformede støbetappe, da disse befinder sig i beholderens fordybninger. Dette gælder imidlertid ikke for de på de ydre delvægge forblivende støbetappe. Når disse meget hårde støbetappe lades tilbage på beholderne, kan disse ikke mere 5 stables. Der er så også risiko for, at andre genstande beskadiges af de udstående støbetappe ved beholderens bevægelser. Støbetappene skal altså fjernes enten bagefter med store omkostninger, f.eks. ved fræsning, eller man må med endnu større omkostninger forhindre, at sådanne støbetappe overhovedet op-10 står på beholderne. Dette kan f.eks. ske ved anvendelse af nålel ukkedyser , der kan styres pneumatisk eller hydraulisk.2, turn pin-shaped molding pins as they are in the recesses of the container. However, this does not apply to the molding stays on the outer partitions. When these very hard casting pins are left on the containers, these can no longer be stacked. There is also a risk that other objects will be damaged by the protruding casting pins during the movement of the container. Thus, the casting pins must be removed either afterwards with high costs, e.g. by milling, or with even greater cost, such casting pins must be prevented at all on the containers. This can be done, for example. This can be done using needle point nozzles which can be controlled pneumatically or hydraulically.
Det er den foreliggende opfindelses formål at anvise et værktøj til sprøjtestøbning, hvorved man på enkel måde og især 15 uden brug af dyre specialdyser kan undgå forstyrrende støbe-tappe på flervæggede beholderes ydre delvægge.SUMMARY OF THE INVENTION It is an object of the present invention to provide a tool for injection molding, whereby disruptive casting pins can be easily avoided on the outer partitions of multi-walled containers without the use of expensive specialty nozzles.
Dette formål tilgodeses ved et værktøj af den indledningsvis beskrevne art og yderligere ifølge opfindelsen, ved at ind-20 sprøjtningskanalen for den ydre delvæg er ført således i værktøjet, at den munder ved én af de to sideflader af det i værktøjet for den ydre delvæg tilvejebragte hulrum.This object is met by a tool of the type described initially and further according to the invention, in that the injection channel for the outer partition is guided in the tool so as to open at one of the two lateral surfaces of that provided in the tool for the outer partition. cavity.
I dette værktøj er indsprøjtningskanalen for den ydre delvæg 25 ført så gunstigt, at den forløber på tværs af bevægelsesretningen ved den færdige beholders afformning. Støbetappen afskæres derfor ved beholderens afformning fra den ydre delvæg, der dermed er støbetapfri. En kostbar efterbehandling kræves ikke mere, og dyre specialdyser er der ikke længere behov for.In this tool, the injection channel for the outer partition 25 is guided so favorably that it extends transversely to the direction of movement of the finished container molding. The casting pin is therefore cut off by the molding of the container from the outer part wall, which is thus cast-free. Expensive finishing is no longer required and expensive specialty nozzles are no longer needed.
30 Den i støbekanalen forblivende støbetap forstyrrer ikke ved den efterfølgende sprøjteproces, da den - ved hjælp af det ved et væsentligt tryk ind i værktøjets hulrum indsprøjtede sprøj-testøbemateriale - trykkes ud af indsprøjtningskanalen.30 The molding stay in the molding channel does not interfere with the subsequent spraying process, since - by means of a substantial pressure injected into the tool cavity of the tool - it is pushed out of the injection channel.
35 Et udførelseseksempel for den foreliggende opfindelses genstand er vist på tegningen, hvoriAn embodiment of the subject of the present invention is shown in the drawing, in which
DK 161061 BDK 161061 B
3 fig. 1 i skematisk perspektivafbildning viser en beholder, der kan fremstilles med værktøjet ifølge opfindelsen, fig. 2 er et delsnit gennem beholderen i forstørret målestok, 5 og fig. 3 viser et udsnit af et værktøj ifølge opfindelsen.3 FIG. 1 is a schematic perspective view showing a container which can be made with the tool according to the invention; FIG. 2 is a partial section through the container on an enlarged scale; 5 and FIG. 3 shows a section of a tool according to the invention.
I det viste udførelseseksempel er der vist en dobbeltvægget 10 kasse. Denne kasse og dens fremstilling, henholdsvis det tilsvarende værktøj, forklares nærmere som eksempel på alle geometrisk mulige beholdere, der også kan have mere end to delvægge. Væggene henholdsvis delvæggene behøver heller ikke at være plane, henholdsvis forløbe indbyrdes parallelt, men der kan 15 også på beholderen forefindes bølgeformede delvægge. Hulrumme ne i værktøjet må så formes på tilsvarende måde.In the illustrated embodiment, a double walled box is shown. This box and its manufacture, respectively, and the corresponding tool, are explained in more detail by way of example of all geometrically possible containers which may also have more than two part walls. Neither the walls nor the sub-walls need to be planar or parallel to each other, but there may also be corrugated sub-walls on the container. The cavities in the tool must then be shaped in a similar manner.
Henvisningstallet 1 anviser en af plast bestående beholder, der f.eks. kan benyttes som en flaskekasse. Beholderen 1 er 20 mekanisk så stabil, at et større antal fyldte flasker kan transporteres i denne. Den kan have to over for hinanden beliggende vægge med gennembrydninger 2 og 3, der tjener som gribehuller. Mindst én af beholderen l's vægge består af to delvægge 4 og 5 (fig. 2), der forløber indbyrdes parallelt og 25 begrænser et hulrum 6. Hulrummet 6 kan være opdelt i to eller flere hulrum ved hjælp af af overskuelighedsgrunde ikke viste lister.Reference numeral 1 denotes a plastic container which e.g. can be used as a bottle box. The container 1 is mechanically stable so that a larger number of filled bottles can be transported therein. It may have two opposite walls with breakthroughs 2 and 3 serving as gripping holes. At least one of the walls of the container 1 consists of two sub-walls 4 and 5 (Fig. 2), which run parallel to each other and restrict a cavity 6. The cavity 6 can be divided into two or more cavities for reasons not shown for clarity.
Delvæggen 4 er i det viste udførelseseksempel kortere end del-30 væggen 5. Delvæggen 5 går ved sin ene ende over i beholderen l's bund 7, medens den ved sin anden ende er forbundet med delvæggen 4, således at denne væg af beholderen 1 i tværsnit er udformet omtrent U-formet. Delvæggen 4 ligger udvendigt på beholderen 1.The part wall 4 is shorter in the illustrated embodiment than the part wall 5. The part wall 5 extends at one end to the bottom 7 of the container 1, while at its other end it is connected to the part wall 4, so that this wall of the container 1 is in cross section. is approximately U-shaped. Part wall 4 is located externally on container 1.
Til fremstilling af beholderen 1 benyttes et sprøjtestøbeværk-tøj, således som det i et udsnit er vist i fig. 3. Værktøjet 35For the preparation of the container 1, an injection molding tool is used, as shown in a section in FIG. 3. The tool 35
DK 161061BDK 161061B
4 består af en kerne 9 og en ydre form 10, der kan forskydes relativt i forhold til hinanden i retning af dobbeltpilen D. Ved lukket værktøj forbliver der mellem kernen 9 og yderformen 10 sammenhængende hulrum 11, hvori der til fremstilling af en be-5 holder 1 indsprøjtes sprøjtestøbemateriale. Sprøjtestøbemate-rialet indsprøjtes i hulrummene selv, i denne forbandelse via indsprøjtningskanaler 12, der er anbragt i yderformen 10 og udmunder i hulrummene 11.4 consists of a core 9 and an outer mold 10, which can be displaced relative to one another in the direction of the double arrow D. In closed tool, cavities 11 are interconnected between the core 9 and the outer mold 10, in which a holds 1 injected injection molding material. The injection molding material is injected into the cavities themselves, in this curse, via injection channels 12 disposed in the outer mold 10 and opening into the cavities 11.
10 Det til frembringelse af den ydre delvæg 4 i værktøjet tilstedeværende hulrum 13, der i sin helhed hører med til hulrummene 11, har mindst én indsprøjtningskanal 14. I modsætning til indsprøjtningskanalen 12 udmunder indsprøjtningskanalen 14 ikke i retning af den ved pilen P antydede afformningsretning, 15 men på tværs af denne i hulrummet 13. Indsprøjtningskanalen 14's ende 15 ligger i denne forbindelse fortrinsvis i hulrummet 131 s indre sideflade 16, og især fortrinsvis i nærheden af dette hulrums ende, der svarer til den frie ende af den ydre delvæg 4 af den beholder 1, der skal fremstilles. Desuden fø-20 res indsprøjtningskanalen 14 hensigtsmæssigt således, at den udmunder under en ret vinkel i hulrummet 13.The cavity 13 present in the tool to produce the outer part wall 4, which is wholly associated with the cavities 11, has at least one injection channel 14. In contrast to the injection channel 12, the injection channel 14 does not open in the direction of deforming indicated by the arrow P, 15 but transversely thereto in the cavity 13. In this connection, the end 15 of the injection duct 14 preferably lies in the inner side surface 16 of the cavity 131, and especially preferably near the end of this cavity corresponding to the free end of the outer partition 4 of the cavity. container 1 to be manufactured. In addition, the injection channel 14 is conveniently fed so that it opens at a right angle into the cavity 13.
Til den ydre delvæg 4 kan der også benyttes en indsprøjtningskanal 17, der ender i hulrummet 13's ydre sideflade 18. Også 25 indsprøjtningskanalen 17 kan udmunde under en ret vinkel ind i hulrummet 13. Den kan imidlertid også - ligesom indsprøjtningskanalen 14 - og således som vist i fig. 3, udmunde skråt ind i hulrummet 13.For the outer part wall 4, an injection channel 17 which ends in the outer side surface of the cavity 13 can also be used. Also, the injection channel 17 can open at a right angle into the cavity 13. However, it can also - like the injection channel 14 - and as shown in FIG. 3, opens obliquely into the cavity 13.
30 Indsprøjtningskanalerne 14 og 17's specielle føring har den fordel, at støbetappen ved den sprøjtestøbte beholder l's af-formning afrives af den ydre delvæg 4 ved indsprøjtningskanalerne 14 og 17's ender 15 og 19 og forbliver i indsprøjtnings-kanalen. Den ydre delvæg er derfor efter beholderen l's af-35 formning uden efterbearbejdning fri for støbetappe. I en fore-trukken udførelsesform benyttes indsprøjtningskanalen 14, da der så på beholderen l's overflade ikke findes nogen aftrykThe special guide of the injection channels 14 and 17 has the advantage that the molding pin of the injection molded container 1 is torn off by the outer part wall 4 at the ends 15 and 19 of the injection channels 14 and 17 and remains in the injection channel. The outer part wall is therefore free of casting pins after the molding of the container 1 without finishing. In a preferred embodiment, the injection channel 14 is used, since no impression is found on the surface of the container 1.
Claims (5)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19853503006 DE3503006A1 (en) | 1985-01-30 | 1985-01-30 | INJECTION MOLDING TOOL OF STACKABLE CONTAINERS |
| DE3503006 | 1985-01-30 |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| DK47486D0 DK47486D0 (en) | 1986-01-30 |
| DK47486A DK47486A (en) | 1986-07-31 |
| DK161061B true DK161061B (en) | 1991-05-27 |
| DK161061C DK161061C (en) | 1991-11-11 |
Family
ID=6261111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK047486A DK161061C (en) | 1985-01-30 | 1986-01-30 | SPRAY OPENING TOOL OF STACKABLE CONTAINERS |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0189906B1 (en) |
| AT (1) | ATE34118T1 (en) |
| DE (2) | DE3503006A1 (en) |
| DK (1) | DK161061C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2734497A (en) * | 1956-02-14 | chayne | ||
| JPH0452117A (en) * | 1990-06-20 | 1992-02-20 | Takata Kk | Method for molding module cover of air bag apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1281969A (en) * | 1970-10-27 | 1972-07-19 | Flambeau Plastics Corp | Injection moulding machine for a plastics container |
| US4277435A (en) * | 1979-03-28 | 1981-07-07 | Logic Devices, Inc. | Plastic tumbler and method and apparatus for making same |
-
1985
- 1985-01-30 DE DE19853503006 patent/DE3503006A1/en not_active Withdrawn
-
1986
- 1986-01-29 AT AT86101130T patent/ATE34118T1/en not_active IP Right Cessation
- 1986-01-29 DE DE8686101130T patent/DE3660181D1/en not_active Expired
- 1986-01-29 EP EP86101130A patent/EP0189906B1/en not_active Expired
- 1986-01-30 DK DK047486A patent/DK161061C/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE3660181D1 (en) | 1988-06-16 |
| DK47486D0 (en) | 1986-01-30 |
| DK47486A (en) | 1986-07-31 |
| DK161061C (en) | 1991-11-11 |
| DE3503006A1 (en) | 1986-08-07 |
| EP0189906B1 (en) | 1988-05-11 |
| EP0189906A3 (en) | 1986-10-29 |
| EP0189906A2 (en) | 1986-08-06 |
| ATE34118T1 (en) | 1988-05-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PBP | Patent lapsed |