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WO1991009983A1 - Tige de support - Google Patents

Tige de support Download PDF

Info

Publication number
WO1991009983A1
WO1991009983A1 PCT/DE1990/000879 DE9000879W WO9109983A1 WO 1991009983 A1 WO1991009983 A1 WO 1991009983A1 DE 9000879 W DE9000879 W DE 9000879W WO 9109983 A1 WO9109983 A1 WO 9109983A1
Authority
WO
WIPO (PCT)
Prior art keywords
rack rod
legs
rack
brackets
rod according
Prior art date
Application number
PCT/DE1990/000879
Other languages
German (de)
English (en)
Inventor
Günther Strecker
Gerhard Wilhelm
Original Assignee
Schering Ag, Berlin Und Bergkamen
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Schering Ag, Berlin Und Bergkamen filed Critical Schering Ag, Berlin Und Bergkamen
Publication of WO1991009983A1 publication Critical patent/WO1991009983A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/003—Apparatus
    • C23C2/0032—Apparatus specially adapted for batch coating of substrate
    • C23C2/00322—Details of mechanisms for immersing or removing substrate from molten liquid bath, e.g. basket or lifting mechanism

Definitions

  • the invention relates to a rack rod for electroplating objects, in particular plate-shaped objects such as printed circuit boards, with holding devices fastened to the rack rod for fixing the objects to the rack rod, the holding devices each having a rolling body which is mounted on an inclined plane and can be rolled
  • the plate-shaped object can be inserted into the holding device via an insertion slot and can be clamped between the rolling element and an opposite contact surface.
  • the objects are attached or attached to galvanizing racks in galvanic baths and immersed together with them in a galvanic bath.
  • Power is supplied via the mounting rails, which are arranged across the treatment bath and on which the galvanizing racks are attached.
  • the objects to be treated in the galvanic bath are attached to the lower part of the galvanizing frame, the so-called frame rod.
  • the above-mentioned holding devices are used to fix the objects to the frame rods
  • REPLACEMENT LEAF provided in which the plate-shaped object can be clamped between a ball mounted on an inclined plane and an opposite contact surface.
  • cages are welded to the frame rod, the side walls of which define the inclined plane and the contact surface between which the clamping ball is mounted, the front of the cage having a slot for inserting the plate-shaped object into the cage.
  • the known construction is technically complex and therefore expensive. Furthermore, the problems with the current transfer can arise after the plate to be coated lies over its entire length on the side wall of the longitudinal groove of the rack rod and the contact pressure is thus low. Finally, it is disadvantageous that, due to the longitudinal groove and the cage construction integrated into the frame rod, the electrically conductive cross section of the frame rod is considerably reduced.
  • the invention is therefore based on the object of creating a rack of the type mentioned at the outset, in which the disadvantages of the known prior art are substantially avoided, the rack rod according to the invention being distinguished primarily by good electrical properties
  • this object is essentially achieved in that the holding device is formed by two angular parts, one leg of which is screwed to the frame rod on opposite sides of the frame rod and the other legs of which are connected to one another on a side of the frame rod connecting the opposite sides taper and face each other to form said insertion slot, one of the two legs for forming the inclined plane and for receiving the rolling body between itself and the frame rod being provided on its side facing the frame rod with a correspondingly shaped recess, and the end face of the other leg facing this leg forms the abovementioned opposite contact surface.
  • the insertion slot is preferably arranged essentially centrally with respect to the frame rod, and the rolling body is also designed as a disk.
  • the angular parts could be L-shaped and then a pair of these angular parts define a holding device, it is provided in a preferred development of the invention that the angular parts are each designed as U-shaped clips, the base of which can be screwed onto the frame rod, wherein two opposite legs of a pair of clips each form a holding device on opposite sides of the frame rod, that is, a single pair of clips defines two holding devices.
  • ERSA TZBLATT The construction according to the invention has a number of advantages over the known prior art.
  • the overall height of the brackets can be kept comparatively low, as a result of which there is only a slight electrical shielding in the area of the brackets and the field line configuration is only slightly influenced. Due to the preferably central arrangement of the slot, the field line distribution on the front and rear of the circuit board is uniform, which results in the same conditions for the coating on the front and rear of the circuit board.
  • the clamping area is comparatively small, and due to the high contact pressure that can be achieved in this way, good contact between frame rod and printed circuit board can be assumed.
  • each pair of clips the two legs of the one clip are each provided with a recess and the end faces of the two legs of the other clip.
  • REPLACEMENT LEAF always define the opposite contact surface. With such a construction, only a single clamp of a pair of clamps has to be machined to form the recesses, while the other clamp can remain unchanged.
  • the two clips of a pair of clips have essentially the same cross section, so that all clips can be produced from the same U-shaped profile material.
  • the frame rod has a single, continuous threaded bore for each pair of angle parts or brackets; the only change that the rack rod thus experiences as a component is a single threaded hole for two holding devices in each case.
  • the longitudinal edges of the frame rod are chamfered, which on the one hand achieves a more favorable field line distribution by avoiding sharp edges and on the other hand results in a construction which is optimized in terms of washing technology, after in such a case additionally the area can be rinsed between the inner edge of the clip and the frame rod.
  • FIG. 1 shows a " partial view of a rack rod according to the invention in a side view
  • FIG. 2 shows a side view in the direction of arrow II according to FIG. 1,
  • FIG. 3 shows a top view of the rack rod in the direction of arrow III according to FIG. 1,
  • Figure 4 is a plan view of an alternative embodiment of the contact surface of the bracket legs of the holding device.
  • Figure 5 is a side view of an alternative embodiment of the contact surface of the bracket legs of the holding device.
  • the reference number 2 denotes a frame rod to which a holding device, designated overall by reference number 8, is fastened. It goes without saying that at least two holding devices 8 are generally arranged in a longitudinal direction on a rack bar 2 after each printed circuit board or the like to be held on the rack bar 2 or the like on each rack bar generally by means of two holding devices 8 is held. However, since the holding devices 8 are each constructed identically, it is sufficient for the purpose of the present description to explain only a single holding device 8 in more detail.
  • Each holding device 8 comprises two brackets 10, 12 which, as can be seen in particular from FIG. 3, are each substantially U-shaped in cross section and each have essentially identical dimensions.
  • the brackets 10 and 12 each have a base 14 and '16, and at both ends of the base 14, 16 each comprise a right angles thereto extending leg 18,
  • REPLACEMENT LEAF 20 or 22, 24 The clear width between the legs 18, 20 or 22, 24 essentially corresponds to the corresponding dimension of the frame rod 2, so that the clamps 10, 12 grip the frame rod from opposite sides practically without play.
  • the length of the legs 18, 20, 22 and 24 is in each case the same and dimensioned such that when clips 10, 12 are mounted on the frame rod 2, the legs 18 and 22 or 20 and 24 face each other to form an insertion slot 26 which is of sufficient width has in order to receive the plate-shaped object to be treated at its edge region. It follows from the foregoing that the insertion slots 26 are arranged exactly in the center with respect to the frame rod 2.
  • through-threaded bores 28 are formed at suitable positions, which run perpendicular to the longitudinal direction of the rack rod 2 and in the center and for receiving mounting screws 30, 32 on both sides, by means of which the clamps 10 and 12 are screwed to the rack rod 2 become.
  • recesses 34, 36 are formed on the inner sides of the legs 22, 24, the rear side of the recess facing the base 16, as can be seen in particular from FIG. 1, in each case as an inclined plane 38, 40 is formed, which increasingly approaches the base 16 from bottom to top.
  • a disc-shaped rolling body 46, 48 is captive and with
  • securing pins 50 are fastened to the clamp 12, which on the one hand sufficiently close off the space accommodating the disks 46 and 48 to slide out to prevent the panes, on the other hand, not significantly impair flushing through this space. It should also be noted that the securing pins 50 are not shown in the case of the illustration according to FIG. 3 for the sake of clarity.
  • the edges of the frame rod 2 are beveled, as can be seen in particular from FIG. 3, the width of the bevels 6 being at least a few millimeters.
  • the outer, longitudinal edges of the brackets 10, 12 are also clearly bevelled.
  • the lower corners of the legs 18, 20, 22, 24 of the brackets 10, 12 are also chamfered in order to define insertion bevels in this way which facilitate the insertion of the plate-shaped objects to be treated into the holding devices 8.
  • the plate-shaped objects are inserted from below via the insertion bevels into the insertion slot 26 of the holding device 8, the disks receding upwards on the inclined plane, and the plate-shaped object is then removed with a short Pulled downwards so that the plate is clamped between the disk 46 or 48 and the opposite contact surface 42 or 44 of the clamp 10.
  • the system surfaces 42, 44 are designed as flat surfaces. According to FIG. 4, these contact surfaces can also be designed as a roof-shaped elevation 52, in which case there is essentially a line contact with the plate-shaped object and the contact pressure of the plate-shaped object against the clamp 10 is thus increased.
  • the contact surfaces 42 and 44 can be provided with nub-shaped elevations 54, so that in this case there is essentially point contact between the plate-shaped object and the clamp 10. Those skilled in the art are familiar with further configurations of the contact surfaces which serve to increase the contact pressure.
  • balls or rollers can also be used as rolling elements.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing Of Printed Wiring (AREA)

Abstract

Les dispositifs de retenue (8) d'une tige de support (2) utilisée en galvanisation par immersion d'objets plats sont formés chacun de deux crampons (10, 12) vissés sur la tige de support (2) de sorte que les deux branches (18, 22 ou 20, 24) de chaque crampon s'opposent, formant une fente d'introduction (26). Des disques (46, 48) montés sur des plans inclinés (38, 40) d'une branche (22, 25) serrent l'objet plat entre le disque et des surfaces d'appui formées sur les faces frontales de l'autre branche (18, 20).
PCT/DE1990/000879 1989-12-21 1990-11-15 Tige de support WO1991009983A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3942418A DE3942418A1 (de) 1989-12-21 1989-12-21 Gestellstab
DEP3942418.9 1989-12-21

Publications (1)

Publication Number Publication Date
WO1991009983A1 true WO1991009983A1 (fr) 1991-07-11

Family

ID=6396098

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1990/000879 WO1991009983A1 (fr) 1989-12-21 1990-11-15 Tige de support

Country Status (2)

Country Link
DE (1) DE3942418A1 (fr)
WO (1) WO1991009983A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5616610A (en) * 1989-12-22 1997-04-01 Astra Aktiebolag (R)-5-carbamoyl-8-fluoro-3-N,N-disubstituted-amino-3,4-dihydro-2H-1-benzopyrans
US5639772A (en) * 1989-12-22 1997-06-17 Astra Aktiebolag Chroman derivatives

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191211836A (en) * 1912-05-18 1913-01-23 Sadamasa Uyeno Improvements in Coating Iron with Aluminium.
DE531649C (de) * 1929-10-27 1931-08-15 Otto Semmler Vorrichtung zum Verbleien von Eisen-, Kupfer- oder aehnlichen Rohren
US2845762A (en) * 1955-02-25 1958-08-05 Le Roy R Kelman Can handling fixtures
FR1257361A (fr) * 1959-05-14 1961-03-31 Stahl & Walzwerke Rasselstein Procédé destiné à influencer le profil superficiel de corps solides, plus particulièrement de bandes et tôles métalliques à surfaces traitées

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191211836A (en) * 1912-05-18 1913-01-23 Sadamasa Uyeno Improvements in Coating Iron with Aluminium.
DE531649C (de) * 1929-10-27 1931-08-15 Otto Semmler Vorrichtung zum Verbleien von Eisen-, Kupfer- oder aehnlichen Rohren
US2845762A (en) * 1955-02-25 1958-08-05 Le Roy R Kelman Can handling fixtures
FR1257361A (fr) * 1959-05-14 1961-03-31 Stahl & Walzwerke Rasselstein Procédé destiné à influencer le profil superficiel de corps solides, plus particulièrement de bandes et tôles métalliques à surfaces traitées

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5616610A (en) * 1989-12-22 1997-04-01 Astra Aktiebolag (R)-5-carbamoyl-8-fluoro-3-N,N-disubstituted-amino-3,4-dihydro-2H-1-benzopyrans
US5639772A (en) * 1989-12-22 1997-06-17 Astra Aktiebolag Chroman derivatives
US5639784A (en) * 1989-12-22 1997-06-17 Astra Aktiebolag Method for the treatment of migraine
US5641807A (en) * 1989-12-22 1997-06-24 Astra Aktiebolag Method for the treatment of depression
US5646309A (en) * 1989-12-22 1997-07-08 Astra Aktiebolag Intermediates in the synthesis of chroman derivatives
US5650524A (en) * 1989-12-22 1997-07-22 Astra Aktiebolag Process for preparing (R)-3-amino-5-methoxychroman
US5656658A (en) * 1989-12-22 1997-08-12 Astra Aktiebolag Method for the treatment of anxiety
US5656657A (en) * 1989-12-22 1997-08-12 Astra Aktiebolag Chroman derivatives

Also Published As

Publication number Publication date
DE3942418A1 (de) 1991-06-27

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