EP1684948B1 - Unite de porte-cylindres - Google Patents

Unite de porte-cylindres Download PDF

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Publication number
EP1684948B1
EP1684948B1 EP04797238A EP04797238A EP1684948B1 EP 1684948 B1 EP1684948 B1 EP 1684948B1 EP 04797238 A EP04797238 A EP 04797238A EP 04797238 A EP04797238 A EP 04797238A EP 1684948 B1 EP1684948 B1 EP 1684948B1
Authority
EP
European Patent Office
Prior art keywords
rollers
roller holder
holder unit
unit according
sliding bearing
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.)
Active
Application number
EP04797238A
Other languages
German (de)
English (en)
Other versions
EP1684948A1 (fr
Inventor
René Amherd
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Von Arx AG
Original Assignee
Von Arx AG
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 Von Arx AG filed Critical Von Arx AG
Publication of EP1684948A1 publication Critical patent/EP1684948A1/fr
Application granted granted Critical
Publication of EP1684948B1 publication Critical patent/EP1684948B1/fr
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/10Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting fittings into hoses
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/53Means to assemble or disassemble
    • Y10T29/5367Coupling to conduit

Definitions

  • the invention relates to a roller holder unit for a pressing tool according to the preamble of the independent claim.
  • a roller holder unit is the US-B-6240626 refer to.
  • a pressing device which comprises a pressing tongs for connecting a pipe with a press fitting.
  • the pressing tongs comprise two pivoting arms, which are articulated by means of one pin each pivotally between two identical T-shaped support plates.
  • a piston-cylinder unit is operatively connected to a roller holder comprising two rollers.
  • the pivot arms are provided at one end with a rolling surface for the system on the pressing cylinder of the pressing device. At the opposite end, they are designed as jaws with mutually facing pressing surfaces.
  • the linkages for the bolts are located on the carrier plates at a distance. In the region of the free end of the T-shaped support plates is a receptacle of a connecting pin for connection to the pressing device.
  • the pressing tongs are now pulled back to the pressing device.
  • the swivel arms slide with their rolling surfaces along the pressing device to the rear.
  • the tensile force is transmitted via the connecting bolt on the T-shaped support plates.
  • the pivot arms pivot about the bearing pins, and the pressing jaws are moved against each other and compressed.
  • an electrically operated pressing tool which actuates a hydraulic piston-cylinder unit by means of an electrically operated hydraulic pump.
  • This is operatively connected to a roll holder, which comprises two rollers.
  • the jaws are connected by a T-shaped suspension via a retaining bolt with a fork-shaped receptacle.
  • the fork-shaped receptacle is part of the piston-cylinder unit.
  • the rollers on the roll holder roll on the jaws of a pair of pliers as soon as the clamping pliers pulled backwards by the piston-cylinder unit and thus the clamping is completed.
  • the clamping forceps are pressed together by pushing apart the jaws at the back through the rollers.
  • the roll holder in the form of a yoke, which is firmly connected to the piston rod.
  • Roller holder, rollers and roller bearings must be made very solid, since the whole pressing force and the operating force of the piston-cylinder unit must be taken when rolling the rollers on the jaws of the roles of their storage and transferred to the roll holder.
  • This embodiment of the roller holder requires a corresponding size and dimensioning of the holding plates and the rollers, roller bearings and bearing pins. It is therefore difficult and expensive to manufacture.
  • the object of the invention is to produce a roller holder unit which no longer has these disadvantages. It must be easy to manufacture, lightweight, and space efficient. This object is achieved by the invention according to independent claim.
  • An advantage of the invention is that the roll holder unit according to the invention is inexpensive in terms of material and production.
  • An additional advantage of the invention is that the new roll holder can be made almost wear-free.
  • Another advantage of the invention is that the rollers are simple and easily replaceable.
  • FIG. It comprises a drive unit 70, a piston-cylinder unit 5 with a fork-shaped receptacle 55 and the actual clamping tongs 60.
  • the clamping tongs 60 is fastened to a T-shaped holder, which is connected to a retaining bolt 54 and .a retaining pin receptacle 61 to the fork-shaped receptacle 55 is.
  • a roll holder with two rollers.
  • the fork-shaped receptacle 55 is part of the piston-cylinder unit 5.
  • the rollers roll on the jaws 62 of a clamping pliers 60 as soon as the piston rod is pushed forward ..
  • the clamping forceps 60 is compressed by the clamping jaws 62 are pushed apart by the rear rollers , The clamping is completed.
  • the connection of drive unit 70 and clamping tongs 60 is formed by the piston-cylinder unit 5. It consists of Figure 2 from the cylinder head 51 with a through hole for receiving a retaining bolt 54 for the attachment of the clamping tongs 60.
  • a compression spring 57 In the cylinder head is a compression spring 57, which pushes a piston rod 52 in a rest position forward.
  • a piston rod 52 In the fork-shaped receptacle 55, one of the rollers 2 is partially visible. When pressing the pressing tool, the piston rod 52 is pushed forward.
  • the cylinder head 51 remains stationary, whereby the rollers 2 within the fork-shaped receptacle 55 move relatively forward.
  • the pressing jaws 62 protrude somewhat into the fork-shaped receptacle 55 and, with their rolling flanks 63, bear against the rollers 2 on the outside.
  • the rollers 2 thus run on the pressing jaws 62 along the rolling edges 63 and push them outwards.
  • the pressing is carried out in the clamping tongs 60.
  • FIG. 3 More details of the piston-cylinder unit 5 are shown in Figure 3, shown in section, in connection with the roller holder unit.
  • the piston rod 52 projects on one side into the cylinder head 51. It is biased by a compression spring 57.
  • the compression spring 57 includes the piston rod 52 and is at one end to a spring washer 53 and at the other end to a Seal retaining ring 50 in the stop.
  • the spring pressure washer 53 is fastened to the piston rod 52 with a screw.
  • a scraper ring 59 is arranged, which is pierced by the piston rod 52.
  • the roller holder unit is attached.
  • roller holder unit It protrudes from the cylinder head 51 in the region of the fork-shaped exception 55 in such a way that two rollers 2 are partially in the fork opening.
  • a bearing block 1 of the roller holder unit is fixed by means of a clamping pin 58 on the piston rod 52. If now the piston rod 52 is pushed forward during actuation of the pressing tool, wherein the cylinder head 51 and the clamping tongs 60 remain stationary, the roller holder unit is moved within the fork-shaped receptacle 55 against the retaining pin 54 and thus against the jaws 62. The rollers 2 thus roll along the rolling edges 63 of the clamping jaws 62 and push them apart. Once the compression is done, the piston rod 52 is moved by the compression spring 57 back to the rest position. Thus, the roller holder unit returns to the rest position just outside the cylinder head 51st
  • the roller holder unit is shown in Figure 4 in view. It consists of a bearing block 1, which corresponds to a cylindrical recess in the cylinder head 51, on the front-outer side. Perpendicular to the bearing block 1 is at least one, but advantageously two parallel retaining plates 3 available. They are fastened by means of screws 4 on the bearing block 1. On the retaining plate 3 respectively between the two retaining plates 3, two rollers 2 are spaced from each other. The rollers 2 are arranged so that they touch each other on a straight line at its periphery. she So support each other and roll off each other. With locking pins 21 they are secured against falling out.
  • the locking pins 21 need not absorb any bearing forces, they are weakly dimensioned and in and of themselves do not require any extra support for the rollers 2 on the locking pins 21. It is even possible to carry out a design without drilling through the rollers 2.
  • the geometric arrangement and design of the jaws can prevent falling out of the rollers 2.
  • the safety function in the admission of rotational movement of the rollers 2 is also ensured if the roller inner diameter is much larger than the diameter of the locking pins 21 and thus much game is available, suitable surfaces on the locking pin 21 and the through holes of the rollers 2. It can, for example Steel rollers are used with locking pins 21 made of bronze, which guarantees a permanent self-lubrication here.
  • Crucial new is the storage of the rollers 2 in the roller holder unit.
  • the rollers 2 are based on the one hand, as described, against each other and on the other hand against suitable sliding bearing surfaces 11, 12 on the bearing block 1.
  • the main load of the rollers 2 when pressing the pressing tool is on the one hand by the separation of the Abrollflanken 63 of the jaws 62 generated.
  • the direction of this load takes place via the roller surface in a straight line through the center of the rollers 2 to the respective other role.
  • the rollers 2 are therefore based on each other. This means that this load must be absorbed and transmitted by any storage and thus not by the securing pins 21 and the holding plates 3.
  • a second type of loading of the rollers is done by the relative movement of the piston rod 52 and thus of the bearing block 1. This load is always perpendicular to the bearing block 1.
  • the Bearing 1 with the sliding bearing surfaces 11, 12 provided.
  • the sliding bearing surfaces 11, 12 correspond to the circumference and the outer diameter of the rollers 2. They are formed as cylindrical cutouts in the bearing block 1. In this case, the lowest point of the indentation between the periphery, so the outer edge of the bearing block 1 and its center. The said forces are thus transmitted in principle perpendicular to the sliding bearing surfaces 11, 12.
  • the sliding friction of the surfaces of the rollers 2 on the sliding bearing surfaces 11, 12 is not too large and inhibits the operation of the pressing tool, the type of surfaces of the rollers 2 and 12 of the sliding bearing surfaces 11, matched. They can be hardened, sintered or coated.
  • a carbonitriding, a Teflon coating of the sliding bearing surfaces or the like is suitable.
  • the choice of a ceramic material for the bearing block 1 and steel rollers 2 with hardened surfaces is suitable.
  • the choice of other, special material pairings for example, a pair of chrome steel rollers with a nylon 6 bearing block can provide a suitable result. In this case, one additionally obtains a shock absorption without impairing the pressing force.
  • each slide bearing surface 11, 12 are provided, which can serve both for the supply of some lubricant, as well as for the removal of any abrasion.
  • roller holder unit with the rollers, their storage, securing and retaining plates can be designed much easier and easier than before.
  • the rollers 2 are mutually supported. Your rotation axis is not loaded and can be limited to a backup against falling out of the rollers 2.
  • the embodiment can be further simplified by the bearing block 1 and the sliding bearing surfaces 11, 12 are made of the same material in one piece. When using suitable material even these parts can be made together with the holding plates 3 in one piece.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Coating With Molten Metal (AREA)
  • Manipulator (AREA)
  • Press Drives And Press Lines (AREA)
  • Rolling Contact Bearings (AREA)

Claims (10)

  1. Unité de porte-galets avec des galets (2) pour un coutil de sertissage à commande électrique, électro-hydraulique ou pneumatique avec une unité piston-cylindre (5), sur laquelle les mâchoires de sertissage (62) sont reliées avec un logement (55) en forme de fourchette par le biais d'un axe de retenue, les galets (2) roulant sur les mâchoires de sertissage (62) d'une pince de sertissage (60) lorsque la pince de sertissage (60) est mise en mouvement par l'unité piston-cylindre (50), le sertissage étant réalisé par l'écartement de l'arrière des mâchoires de sertissage (62) par les galets (2), l'unité de porte-galets comprenant un palier de poussée (1) et au moins une tôle de maintien (3) latérale disposée sur celui-ci, sur laquelle deux galets (2) sont maintenus de manière libre en rotation, caractérisée en ce que le palier de poussée (1) est muni, pour chaque galet (2), d'une surface d'appui lisse (11, 12), dont la forme correspond à la surface de roulement, et ainsi au diamètre extérieur du galet (2).
  2. Unité de porte-galets selon la revendication 1, caractérisée en ce que les galets (2) sont fixés sur la tôle de maintien (3) au moyen de goupilles de fixation (21), les goupilles de fixation (21) étant disposées de telle sorte que les galets (2) peuvent tourner en étant en contact l'un avec l'autre sur leur périphérie extérieure dans la zone entre les goupilles de fixation (21),
  3. Unité de porte-galets selon la revendication 1, caractérisée en ce que les surfaces d'appui lisses (11, 12) sont symétriques, le point le plus profond par rapport au palier de poussée (1) se situant entre la périphérie du palier de poussée (1) et le centre de celui-ci.
  4. Unité de porte-galets selon la revendication 1, caractérisée en ce que le palier de poussée (1) est fixé à une tige de piston (52) de l'unité piston-cylindre (5).
  5. Unité de porte-galets selon la revendication 4, caractérisée en ce qu'une rainure de lubrification (13) est ménagée dans les surfaces d'appui lisses (11, 12).
  6. Unité de porte-galets selon la revendication 4, caractérisée en ce que la surface des surfaces d'appui lisses (11, 12) est revêtue ou trempée, afin qu'elle présente peu de friction par rapport aux galets (2).
  7. unité de porte-galets selon la revendication 4, caractérisée en ce que la surface des galets (2) est revêtue ou trempée, afin qu'elle présente peu de friction par rapport aux surfaces d'appui lisses (11, 12).
  8. Unité de porte-galets selon la revendication 4, caractérisée en ce que des couples de matériaux autolubrifiants sont mis en oeuvre pour les galets (2) et les surfaces d'appui lisses (11, 12).
  9. unité de porte-galets selon la revendication 1, caractérisée en ce que le palier de poussée (1) et les surfaces d'appui lisses (11, 12) sont réalisés d'un seul tenant.
  10. Unité de porte-galets selon la revendication 1, caractérisée en ce que le palier de poussée (1), les surfaces d'appui lisses (11, 12) et les tôles de maintien (3) sont réalisés d'un seul tenant.
EP04797238A 2003-11-20 2004-11-10 Unite de porte-cylindres Active EP1684948B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH19812003 2003-11-20
PCT/CH2004/000681 WO2005049280A1 (fr) 2003-11-20 2004-11-10 Unite de porte-cylindres

Publications (2)

Publication Number Publication Date
EP1684948A1 EP1684948A1 (fr) 2006-08-02
EP1684948B1 true EP1684948B1 (fr) 2007-10-31

Family

ID=34596919

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04797238A Active EP1684948B1 (fr) 2003-11-20 2004-11-10 Unite de porte-cylindres

Country Status (8)

Country Link
US (1) US20070251070A1 (fr)
EP (1) EP1684948B1 (fr)
JP (1) JP4647614B2 (fr)
CN (1) CN100436069C (fr)
AT (1) ATE376910T1 (fr)
DE (1) DE502004005395D1 (fr)
ES (1) ES2295947T3 (fr)
WO (1) WO2005049280A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8316685B2 (en) 2008-10-03 2012-11-27 Von Arx Ag Roller holding unit

Families Citing this family (4)

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Publication number Priority date Publication date Assignee Title
US10926383B2 (en) * 2013-03-14 2021-02-23 Milwaukee Electric Tool Corporation Impact tool
DE102014109535A1 (de) * 2013-07-30 2015-02-05 Rothenberger Ag Presswerkzeug sowie Verfahren zur Herstellung eines Presswerkzeuges
CN104097055B (zh) * 2014-07-16 2017-10-31 无锡凯绎科技有限公司 压缩弹簧气动装配工装
CN112894702B (zh) * 2021-01-27 2023-12-22 长春涵智科技有限公司 用于汽车后备箱密封条的滚压工具及滚压方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8316685B2 (en) 2008-10-03 2012-11-27 Von Arx Ag Roller holding unit

Also Published As

Publication number Publication date
ATE376910T1 (de) 2007-11-15
WO2005049280A1 (fr) 2005-06-02
EP1684948A1 (fr) 2006-08-02
ES2295947T3 (es) 2008-04-16
US20070251070A1 (en) 2007-11-01
CN1882424A (zh) 2006-12-20
CN100436069C (zh) 2008-11-26
JP2007511378A (ja) 2007-05-10
DE502004005395D1 (de) 2007-12-13
JP4647614B2 (ja) 2011-03-09

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