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DK157356B - PRESSURE FOR PRESSING A LAYER OF POWDER-SHAPED MATERIAL ON A PLATE-SHAPED TOPIC, EX. A BEARING PLATE FOR A FRICTION COATING - Google Patents

PRESSURE FOR PRESSING A LAYER OF POWDER-SHAPED MATERIAL ON A PLATE-SHAPED TOPIC, EX. A BEARING PLATE FOR A FRICTION COATING Download PDF

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Publication number
DK157356B
DK157356B DK223985A DK223985A DK157356B DK 157356 B DK157356 B DK 157356B DK 223985 A DK223985 A DK 223985A DK 223985 A DK223985 A DK 223985A DK 157356 B DK157356 B DK 157356B
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Denmark
Prior art keywords
piston
cavity
press
plate
main piston
Prior art date
Application number
DK223985A
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Danish (da)
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DK223985D0 (en
DK157356C (en
DK223985A (en
Inventor
Karl Holik
Original Assignee
Leinweber Anstalt Fuer Mechani
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Publication of DK223985D0 publication Critical patent/DK223985D0/en
Publication of DK223985A publication Critical patent/DK223985A/en
Publication of DK157356B publication Critical patent/DK157356B/en
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Publication of DK157356C publication Critical patent/DK157356C/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/30—Feeding material to presses
    • B30B15/302—Feeding material in particulate or plastic state to moulding presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/34—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses for coating articles, e.g. tablets
    • 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
    • B29L2031/16—Frictional elements, e.g. brake or clutch linings

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Description

DK 157356 BDK 157356 B

Opfindelsen angêr en presse af den i krav l's indled-ning angivne art.The invention relates to a press of the kind specified in the preamble of claim 1.

Fra DE-offentliggarelsesskrift nr. 32 40 764 kendes en sâdan presse med et par ved hjælp af to âg forbund-3 ne trækstænger, pâ hvilke er forskydeligt lejret en cylinder med et stempelaggregat, og hvor stempelaggre-gatet bestâr af et pressen lukkende eller âbnende ho-vedstempel og et tilsvarende, i samme retning som dette virkende og i matricen styret stempel, der bærer 10 et pressestempel, og som har en mindre tværsnitsflade, samt af et i stemplet forskydeligt hjælpestempel. En sâdan presse er ganske vist velegnet til pâfering af bremsebelægninger, f.eks. pâ en bæreplade af métal, men en jævn fordeling af det pulverformede materiale, 15 der skal sammenpresses, kan ikke opnâs, fordi det i presserummet indferte pulver hverken fordeles i side-retningen eller glatstryges pâ overfladen, hvilket in-debærer, at bremsebelægningerne fremstilles med lidt forskellig tæthed pâ forskellige steder. Den kendte 20 presse er derfor kun velegnet til forholdsvis tykke lag, d.v.s. umiddelbart til bremsebelægninger. Da der i belægningslegemer, sâsom bremsebelægninger skal und-gâs asbestmateriale, skal der mellem belægningsmassen, d.v.s. forst og fremmest bremsebelægningen og metalbæ-25 relegemet pâfores et varmeisolerende mellemlag, fordi asbestfrie masser har en meget stor varmeledningsevne, sâ at bærepladen og bremsevæsken opvarmes kraftigt un-der bremsning. Sâdanne mellemlag har som regel kun en tykkelse pâ 1-2 mm. Det er endvidere nadvendigt at hol-30 de mellemlaget skilt fra friktions- eller bremsebelæg-ningsmaterialet, og skilleplanet mâ kun hâve meget smâ tolerancer. Til sâdanne tynde mellemlag anvendes som oftest et meget tungtflydende materiale, sâ at en jævn fordeling af dette i et tyndt lag volder store vanske-ligheder, hvorfor man hidtil har pâfort sâdanne meget 2From DE Publication No. 32 40 764, such a press with a pair is known by means of two octagonal three drawbars, on which is displaceably mounted a cylinder with a piston assembly, and the piston assembly consists of a press closing or opening. a high wood piston and a corresponding, in the same direction as this piston-acting piston, which carries a press piston and having a smaller cross-sectional surface, as well as a piston displaceable piston. Such a press is admittedly suitable for applying brake linings, e.g. on a metal support plate, but an even distribution of the powdered material to be compressed cannot be obtained because the powder fed into the press room is neither distributed in the side direction nor smoothed on the surface, which implies that the brake linings are manufactured with slightly different density in different places. The known press is therefore only suitable for relatively thick layers, i.e. immediately for brake pads. Since in coating bodies such as brake linings must be avoided asbestos material, between the coating mass, i.e. first of all, the brake lining and the metal support body are applied to a heat insulating intermediate layer because asbestos-free masses have a very high thermal conductivity, so that the support plate and the brake fluid are heated strongly during braking. Such intermediate layers usually have only a thickness of 1-2 mm. Furthermore, it is necessary to keep the intermediate layer separated from the friction or brake lining material, and the partition plane must have very small tolerances. For such thin intermediate layers, a very heavy liquid material is usually used, so that a uniform distribution of this in a thin layer causes great difficulties, and so far so much has been applied 2

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tynde mellemlsg manuelt.thin medium manually.

Den foreliggende opfindelse har til formai at tilfere pressen nojagtigt doserede og helt jævnt fordelte pul-vermaterialemængder til tilvejebringelse af pulverlag, 5 især meget tynde mellemlag, og til pâforing af disse pi det pladeformede emne, f.eks. friktionsbelægningsbæ-repladen. Dette formai opnâs ved det i krav l's kende-tegnende del angivne. Ved den centriske indforing af det pulverformede materiale i formerummet sikres det 10 ikke blot, at de doserede pulvermaterialemængder fra oven falder ned i formerummet, men ved hjælp af den kombinerede fordeler og afstryger opnâs desuden, at aile omrâder i formen fyldes eksakt. Trykoverforsels-pladen, der tjener som ilægger, fordeler materialet 15 jævnt og tilvejebringer en glat materialeoverflade oven for formerummet, selv om materialet tilfares i midten, og den hindrer ikke afstrygningen af materialechargens overflade i formerummet.The present invention aims to provide the press with precisely dosed and evenly dispersed amounts of powder material to provide powder layers, especially very thin intermediate layers, and to apply these to the plate-shaped blank, e.g. friktionsbelægningsbæ-repladen. This object is achieved by the characterizing part of claim 1. By centrally introducing the powdered material into the mold cavity, it is not only ensured that the dosed powder material quantities from above fall into the mold cavity, but also by means of the combined distributor and scraper, all areas of the mold are filled precisely. The pressure transfer plate serving as the inserter distributes the material 15 evenly and provides a smooth material surface above the molding space, even though the material is seamed in the middle, and does not prevent the coating of the material charge surface in the molding chamber.

Ved det i krav 2 angivne opnâs en endnu bedre forde-20 ling af det pulverformede materiale inden dettes ind- fering i formerummet.In the claim 2, an even better distribution of the powdered material is obtained before it is introduced into the molding chamber.

I det folgende forklares opfindelsen nærmere ved hjælp af tegningen, hvor fig. 1 er et stærkt skematiseret længdesnit i en del 25 af pressen ifolge opfindelsen, og fig. 2 viser en detalje, set fra oven.In the following, the invention is explained in more detail with the aid of the drawing, in which fig. 1 is a highly schematic longitudinal section of part 25 of the press according to the invention; and FIG. 2 shows a detail from above.

I fig. 1 ses en presseramme 1 med en ovre pressedel i form af et hovedstempel 2. Den avre pressedel er ved hjælp af to stænger 3 fast forbundet med en nedre presse-30 del 4 med en i denne bevægeligt lejret pressecylinder 3In FIG. 1 shows a press frame 1 with an upper press part in the form of a main piston 2. The lower press part is fixed by means of two rods 3 to a lower press part 4 with a press cylinder 3 housed in this movable press cylinder 3.

DK 157356 BDK 157356 B

5 med et pressestempel 6. I et plan vinkelret pâ papi-rets plan flndes to ikke viste lavtrykcylindere, der kan trykpâvirkes til aktivering af hovedstemplet 2. Hovedstemplet 2 er huit og forskydeligt lejret i pres-5 sens overdel. I hovedstemplets nedre parti findes et som fyldeskakt udformet hulrum 7, medens hovedstemp-lets evre parti er forskydeligt lejret pâ et fylderor 8, der er udformet med en indfyldningsstuds 9, hvori-gennem der kan tilf0res pulverformet materiale i dose-10 rede mængder. Centrait i fylderoret er lejret en dreje- lig stang 10, der kan roteres af en elektromotor 11, og som pâ sin nedre frie ende bærer en afstryger 12 med et i fig. 2 vist S-formet tværsnit. Afstrygerens nedre kant 13 glider under afstrygerens rotering hen 15 over en med den nedre pressedel 4 forbundet formplade 14, som i den viste udforelsesform er en massiv ring, der er fastgjort pâ den nedre pressedel 4 og eventuelt kan udskiftes.5 with a plunger 6. In a plane perpendicular to the plane of the paper, two low pressure cylinders not shown, which can be pressurized to actuate the main plunger, are found. The main plunger 2 is hot and slidably mounted in the top of the press. In the lower portion of the main piston there is a cavity 7 formed as a filling shaft, while the upper portion of the main piston is displaceably mounted on a filling tube 8 formed with a filling nozzle 9 through which powdered material can be fed in dosed quantities. Centrait in the filling tube is mounted a rotatable rod 10, which can be rotated by an electric motor 11, and which at its lower free end carries a scraper 12 with one in FIG. 2 shows the S-shaped cross section. The lower edge 13 of the scraper slides during rotation of the scraper 15 over a molding plate 14 connected to the lower pressing member 4, which in the illustrated embodiment is a solid ring, which is fixed to the lower pressing part 4 and may be replaced.

En som ilægger udformet trykoverforingsplade 15 kan 20 indsvinges eller pâ anden mâde bevæges ind i ruminet mellem hovedstemplet 2 og formpladen 14. Trykoverfo-ringspladen 15 bærer pâ sin underside en ved hjælp af et magnetisk materiale eller sugekopper fastholdt bæ-replade 17, pâ hvilken der skal pâfores et tyndt mate-25 rialelag.A pressurized pressure transfer plate 15 can be swiveled or otherwise moved into the space between the main piston 2 and the mold plate 14. The pressure transfer plate 15 carries on its underside a support plate 17 supported by a magnetic material or suction cup. must be applied to a thin material layer.

Pâ pressestemplet 6's topflade findes kalotter 16, ved hjælp af hvilket trykket fordeles jævnt, selv nâr bære-pladen 17 har huiler til sikring af en bedre vedhæft-ning af det f.eks. 1 mm tykke mellemlag.On the top surface of the plunger 6 there are calutes 16, by which the pressure is evenly distributed, even when the support plate 17 has weights to ensure a better adhesion of it e.g. 1 mm thick interlayer.

30 Til fyldning sænkes det hule stempel 2 ved hjælp af de for omtalte, ikke viste trykcylindre ned pâ formpladen, der har et formehulrum, hvis form svarer til formen af den del, som skal presses. Samtidigt med stemp- 430 For filling, the hollow piston 2 is lowered by means of the pressure cylinders not shown, on the mold plate, which has a mold cavity, the shape of which corresponds to the shape of the part to be pressed. At the same time with stamp 4

DK 157356 BDK 157356 B

let 2's nedsænkning skydes det i formerummet bevægeligt anbragte pressestempel 6 opad ved hjælp af den nedre pressecylinder 5.The lowering of light 2 is pushed upwardly by the lower press cylinder 5 by means of the press piston 6 which is movable in the mold space.

Via fyldestudsen 9 og fylderaret 8 indfares en fordose-5 ret mængde materiale i det hule stempel 2's hulrum 7, hvorved en pâ den drejelige stang 10 anbragt fortræng-ningskegle 18 sarger for, at det pulverformede materiale nâr ind i formens randomrâder. Samtidigt hermed sænkes pressestemplet 6 ned til den nadvendige formdybde. Den 10 i tv/ærsnit S-formede fordelingsafstryger 12 sarger pâ grund af stangen 101 s rotation ved hjælp af elektromo-toren 11 for, at materialet under pressestemplet 6's sænkning fordeles jævnt i formpladen 14's formerum. Fordelingsafstrygeren 12's fordelingsvinger understat-15 ter materialets transport i retning mod formens midte ved tilvejebringelse af en kraftretning mod midten, sâ at materialet fuldstændigt udfylder formerummet, selv nâr udsparingen i formpladen 14 i en eller flere retninger er mindre end hulstemplet 2's indre diameter.Via the filling nozzle 9 and the filling tube 8, a dosed amount of material is introduced into the cavity 7 of the hollow piston 2, whereby a displacement cone 18 arranged on the rotatable rod 10 ensures that the powdered material reaches the peripheral regions of the mold. At the same time, the plunger 6 is lowered to the required mold depth. The 10 in TV / section section S-shaped stripper 12 causes rotation by the rod 101 s by means of the electromotor 11 so that the material during the lowering of the plunger 6 is evenly distributed in the mold space of the mold plate 14. The distribution blades 12 of the distribution blades 12 support the transport of the material towards the center of the mold by providing a force direction towards the center so that the material completely fills the mold space, even when the recess in the mold plate 14 in one or more directions is smaller than the inner diameter of the hollow piston 2.

20 Sâ snart pressestemplet 6 er fart til sin nedre ende- stilling, skydes det hule stempel 2 opad ved hjælp af de ikke viste trykcylindre. I mellemtiden har trykover-faringspladen 15 svinget en bæreplade 17 af métal fra en bærepladeforrâdsstabel ind i rummet mellem de to 25 stempler.As soon as the piston 6 is moving to its lower end position, the hollow piston 2 is pushed upwards by means of the pressure cylinders not shown. Meanwhile, the pressure transfer plate 15 has pivoted a metal carrier 17 from a carrier plate stack into the space between the two 25 pistons.

Trykoverfaringspladen 15 har en sâdan form, at den fuldstændigt dækker formerummet og bærepladen 17. Efter trykoverfaringspladen 15's indsvingning tilfares der gennem en ledning 20 trykolie under hajt tryk i et ring-30 formet rum 21, hvorved det hule stempel trykker tryk overfaringspladen 15 fast ned pâ bærepladen 17 og formpladen 14. Medens de to ikke viste stempler kun skal pâvirkes af et lavt tryk, for at hovedstemplet 2 kanThe pressure transfer plate 15 is in such a way that it completely covers the mold space and the support plate 17. After the oscillation of the pressure transfer plate 15, a pressure oil 20 under high pressure is fed into a ring-shaped space 21, whereby the hollow piston presses the pressure plate 15 firmly onto the the support plate 17 and the mold plate 14. While the two pistons not shown have to be actuated only by a low pressure in order that the main piston 2 can

Claims (3)

5 Det nedre pressestempel 6 kan nu trykkes opad og sammen-trykker herved det i formpladen 14's formehulrum indfar-te og jævnt fordelte materiale direkte mod bærepladen 17. Ved forholdet mellem fladearealet af hovedstemplet 2's to stempelflader i det cylindriske rum 21 pâ den 10 ene side og pressestemplet 6' s nedre fladeareal pâ den anden side opnâs, at stemplet 2's trykkraft mod tryk-overforingspladen 15 i de to cylindres hydraulisk kort-sluttede tilstand altid vil være starre end pressestemp-let 6's pressekraft. Bærepladen 17, f.eks. en bæreplade 15 for bremsebelægninger, har ofte ikke viste forankrings- boringer til sikring af en upâklagelig vedhængning af laget henholdsvis mellemlaget. De i det foregâende omtalte kalotformede forhajninger 16 pâ pressestemplet 6 sikrer en ensartet sammentryk-20 ning af tynde mellemlag selv i omrâdet ved forankrings- boringerne. Efter presseoperationens afslutning aflastes pressestemplet for trykket, og hovedstemplet 2 bevæges opad.The lower press piston 6 can now be pressed upwards, thereby compressing the material and evenly distributed material in the mold cavity 14 and evenly distributed directly against the support plate 17. At the ratio of the surface area of the two piston faces of the main piston 2 to the cylindrical space 21 on one side and, on the other hand, the lower surface area of the piston 6 is obtained so that the compressive force of the piston 2 against the pressure transfer plate 15 in the hydraulically short-closed state of the two cylinders will always be more rigid than the compressive force of the piston 6. The support plate 17, e.g. a carrier plate 15 for brake linings, often does not have anchored bores shown to ensure an impeccable adhesion of the layer or the intermediate layer, respectively. The above-mentioned callous-shaped projections 16 on the press piston 6 ensure uniform compression of thin intermediate layers even in the area at the anchorage bores. After the end of the press operation, the press piston is relieved of the pressure and the main piston 2 is moved upwards. 1. Presse til pâpresning af et lag, især et tyndt mellemlag af pulverformet materiale pâ et pladeformet emne, 25 f.eks. en friktionsbelægnings-bæreplade (17), med et hovedstempel (2) til kraftsluttende lukning af et forme-rums avre âbning ved hjælp af bærepladen (17) og et DK 157356 B fra neden i formerummet bevægeligt pressestempel (6), hvor det pulverformede materiale kan hældes i formerummet fra oven og i nejagtigt doseret mængde, inden dettes lukning, k e n d e t e g n e t ved, at hovedstemplet 5 (2) er et forneden âbent huit stempel, hvis hulrums diameter er sterre end formerummets diameter, at der foroven i hovedstemplets (2) hulrum findes en fyldeskakt (7), at hovedstemplet tll fyldning af formerummet er Indrettet til fra en loftet stilling over formerummet 10 at kunne sænkes ned pâ en formerummet indeholdende plades (matrices) (14) topflade, at der i hovedstemplets hulrum nær ved hovedstemplets nedre kant er anbragt en vinge-formet kombineret afstryger/fordeler (12, 13), som er fastgjort til en roterbar, drevet stang (10), der ra-15 ger centrait op gennem hulrummet og fyldeskakten (7), og at der findes en trykoverferselsplade (15), som er indrettet til efter fyldeprocessen, nâr hovedstemplet er bragt i sin evre stilling, at fastholde bærepladen (17) pâ sin underside og til at bevæges ind i rummet 20 over formerummets avre âbning, (til lukning af formerummet under presseoperationen) og til at presses ned pâ formoverfladen ved hjælp af hovedstemplet (2).1. Press for pressing a layer, in particular a thin intermediate layer of powdered material onto a plate-shaped blank, e.g. a friction coating support plate (17), with a main piston (2) for force-sealing the opening of a mold compartment by means of the support plate (17) and a press piston (6) movable from the bottom of the mold cavity, wherein the powdered material may be poured into the mold cavity from above and in dosed quantity prior to its closure, characterized in that the main piston 5 (2) is a lower open cap, the diameter of which is greater than the diameter of the cavity, that at the top of the cavity (2) a filling shaft (7) is provided that the main piston for filling the cavity is arranged to be lowered from a lofted position above the cavity 10 on a cavity containing plate (matrices) (14) top surface that in the cavity of the main piston near the lower edge of the main piston is arranged a wing-shaped combined stripper / distributor (12, 13) which is attached to a rotatable driven rod (10) which projects centrally up through the cavity and filling shaft (7), and that there is provided a pressure transfer plate (15) which is adapted for the filling process, when the main piston is placed in its anterior position, to hold the support plate (17) on its underside and to move into the space 20 over the outer opening of the mold cavity, (to close the the mold space during the pressing operation) and to be pressed down onto the mold surface by means of the main piston (2). 2. Presse ifelge krav 1, kendetegnet ved, at der i fyldeskakten (7) er anbragt en med drivstangen 25 (10) forbundet fortrængningskegle (18).Press according to claim 1, characterized in that a displacement cone (18) connected to the drive shaft (7) is arranged in the filling shaft (7). 3. Presse ifelge krav 1 eller 2, kendetegnet ved, at fordeler/afstrygeren (12, 13) har et S-formet tværsnit og er indrettet til at transportere materialet ind mod midten.Press according to claim 1 or 2, characterized in that the distributor / stripper (12, 13) has an S-shaped cross section and is arranged to transport the material towards the center.
DK223985A 1984-05-22 1985-05-21 PRESSURE FOR PRESSING A LAYER OF POWDER-SHAPED MATERIAL ON A PLATE-SHAPED TOPIC, EX. A BEARING PLATE FOR A FRICTION COATING DK157356C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843419057 DE3419057A1 (en) 1984-05-22 1984-05-22 PRESS FOR APPLYING A LAYER TO A CARRIER PLATE, ESPECIALLY A DISC BRAKE PAD
DE3419057 1984-05-22

Publications (4)

Publication Number Publication Date
DK223985D0 DK223985D0 (en) 1985-05-21
DK223985A DK223985A (en) 1985-11-23
DK157356B true DK157356B (en) 1989-12-27
DK157356C DK157356C (en) 1990-05-14

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DK223985A DK157356C (en) 1984-05-22 1985-05-21 PRESSURE FOR PRESSING A LAYER OF POWDER-SHAPED MATERIAL ON A PLATE-SHAPED TOPIC, EX. A BEARING PLATE FOR A FRICTION COATING

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EP (1) EP0162463B1 (en)
DE (1) DE3419057A1 (en)
DK (1) DK157356C (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63313700A (en) * 1987-06-15 1988-12-21 Akira Hirai Powder press
AT398726B (en) * 1987-09-29 1995-01-25 Leinweber Anstalt Ing Joh METHOD AND PRESS FOR PRODUCING BLOCKS
FR2862893B1 (en) * 2003-11-28 2006-02-24 Commissariat Energie Atomique DEVICE FOR FILLING A MOLD WITH A POWDER OR A MIXTURE OF POWDERS
KR20080052085A (en) 2006-12-07 2008-06-11 한국전자통신연구원 Magnitude Differential Phase Shift Keying Device and Its Method
JP2013220446A (en) * 2012-04-17 2013-10-28 Mitsubishi Materials Techno Corp Method of manufacturing powder molding and powder molding apparatus
CN118789873B (en) * 2024-09-13 2024-12-24 佛山市涂亿装饰材料科技有限公司 Equipment for extruding powder coating

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1068169B (en) * 1960-03-31 Waldemar I mdemann Düsseldorf Briquetting press
DE7220832U (en) * 1973-11-15 Woerner R Grinding wheel molding compound distribution device for grinding wheel presses
US2358765A (en) * 1943-06-03 1944-09-19 Baldwin Locomotive Works Briquetting press
DE874867C (en) * 1950-09-16 1953-04-27 Hans Kraemer Unicycle trailer for bicycles and motorcycles
CH486317A (en) * 1967-04-25 1970-02-28 Von Roll Ag Press for compacting pourable masses
US3561054A (en) * 1968-10-31 1971-02-09 Wolverine Pentronix Powder compacting press
DE3002420C2 (en) * 1980-01-24 1984-05-30 Werner & Pfleiderer, 7000 Stuttgart Press for compacting loose masses into blocks
DE3240764A1 (en) * 1982-11-04 1984-05-24 Holik, Karl, 2700 Wiener Neustadt Press for producing pressed articles

Also Published As

Publication number Publication date
DE3419057A1 (en) 1985-11-28
DE3419057C2 (en) 1987-10-15
DK223985D0 (en) 1985-05-21
EP0162463B1 (en) 1988-08-10
DK157356C (en) 1990-05-14
EP0162463A1 (en) 1985-11-27
DK223985A (en) 1985-11-23

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