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FR2550971A1 - Apparatus for straightening out metal sheets. - Google Patents

Apparatus for straightening out metal sheets. Download PDF

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Publication number
FR2550971A1
FR2550971A1 FR8313932A FR8313932A FR2550971A1 FR 2550971 A1 FR2550971 A1 FR 2550971A1 FR 8313932 A FR8313932 A FR 8313932A FR 8313932 A FR8313932 A FR 8313932A FR 2550971 A1 FR2550971 A1 FR 2550971A1
Authority
FR
France
Prior art keywords
straightening
sheets
rivet
welding
mandrel
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.)
Pending
Application number
FR8313932A
Other languages
French (fr)
Inventor
Brigitte Papot
Alain Baillon
Christian Chabalier
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.)
TRINOME SARL
Original Assignee
TRINOME SARL
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 TRINOME SARL filed Critical TRINOME SARL
Priority to FR8313932A priority Critical patent/FR2550971A1/en
Publication of FR2550971A1 publication Critical patent/FR2550971A1/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B21D1/06—Removing local distortions

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)

Abstract

The invention relates to apparatuses for straightening out, using spot-welding, enabling metal sheets dented by an impact, to be straightened out. It comprises a body 1, a piston 2 acting on a rod 3 on to which is screwed a mandrel 4, the material of which is energy-conducting; this mandrel 4, by immobilising the rivet 12, enables the apparatus to combine the three operations necessary for straightening out a metal sheet: the welding of the rivet, the traction of the rivet welded to the metal sheet and the breaking of the weld spot. The apparatus can sequence these three operations until the metal sheet is straightened out. The apparatus can be used in all cases where a metal sheet is to be straightened out, especially for in motor-vehicle bodywork.

Description

La présente invention concerne les appareils de redressage par sou -dure par points permettant de redresser les tôles enfoncees par un choc. The present invention relates to straightening devices by spot welding for straightening the plates pressed in by a shock.

Le redressage des tôles est traditionnellement effectué avec des marteaux et des tas , ce qui demande le démontage de la tôle endommagee, un savoir faire important et beaucoup de temps. Le redressage des tales se fait également à l'aide de deux appareils : l'un servant a souder des clous par resistance sur la tôle , l'autre tirer les clous soudes par une masse inertie , ce qui evite le demontage de la tôle mais demande du savoir faire et du temps pour changer d'appareil après chaque type d'operation t soudure I traction / soudure / traction ...)
L'appareil selon l'invention permet d'eviter ces inconvenients
L'ensemble comporte un piston , agissant sur une tige sur laquelle est vissé un mandrin caractérisé par sa triple action de soudure d'un rivet, de traction de ce rivet et de cassure du point de soudure par rotation
Ces trois opérations sont rendues possibles par le fait que le mandrin immobilise un rivet et que le matériau du mandrin est conducteur de l'énergie suffisante
Selon une première variante , la traction est faite par un moyen assiste ( traction électrique ou pneumatique )
Selon une deuxième variante , la traction est faite par un moyen non assisté ( traction mécanique )
Selon une première variante , la rotation est faite par un moyen non assisté une simple rotation de l'ensemble de l'appareil suffit casser le clou
Selon une deuxième variante , la rotation est faite par un moyen assiste ( electrique ou pneumatique )
Le dispositif selon l'invention permet , en agissant sur la comman -de du mandrin de souder un rivet t une tôle , de le tirer pour ramener la tôle , de casser la soudure du clou et de repeter ainsi l'ensemble des trois opérations jusqu'à ce que la t81e soit redressee , ceci avec un seul appareil , sans demonter la tale abimee , en un minimum de temps et avec un minimum de savoir faire
La figure I représente en coupe le dispositif selon l'invention.The straightening of the sheets is traditionally carried out with hammers and heaps, which requires the dismantling of the damaged sheet, an important know-how and a lot of time. The straightening of the sheets is also done using two devices: one used to weld nails by resistance on the sheet, the other pull the welded nails by an inertial mass, which avoids the dismantling of the sheet but requires know-how and time to change device after each type of operation (welding I traction / welding / traction ...)
The apparatus according to the invention makes it possible to avoid these drawbacks
The assembly includes a piston, acting on a rod on which is screwed a mandrel characterized by its triple action of welding a rivet, of pulling this rivet and breaking of the welding point by rotation
These three operations are made possible by the fact that the mandrel immobilizes a rivet and that the material of the mandrel conducts sufficient energy.
According to a first variant, the traction is made by an assist means (electric or pneumatic traction)
According to a second variant, the traction is made by unassisted means (mechanical traction)
According to a first variant, the rotation is made by unassisted means a simple rotation of the entire apparatus is sufficient to break the nail
According to a second variant, the rotation is made by an assisted means (electric or pneumatic)
The device according to the invention makes it possible, by acting on the command of the mandrel to weld a rivet to a sheet, to pull it to bring back the sheet, to break the welding of the nail and thus to repeat all three operations until '' that the t81e is straightened, this with a single device, without removing the damaged tale, in a minimum of time and with a minimum of know-how
Figure I shows in section the device according to the invention.

La figure 2 représente une autre coupe du dispositif selon l'inven -tion
Les figures 3 , 4 , 5 , 6 et 7 représentent le fonctionnement du dispositif selon l'invention
Le dispositif selon la figure l comporte un corps (I) , un piston (2) , une tige (3) sur laquelle est vissée un mandrin (4) composé d'un embout (5) recevant le rivet (12)et d'une molette (6) servant immobiliser le rivet et d'une barre d?arrivee électrique (7)
L'ensemble est monté sur un porte-outil (8) par l'intermédiaire d'une bague prisonnikre (9) assurant la rotation de l'ensemble de l'outil pour casser le point de soudure .Une poignée (10) vissée sur le corps (1) comporte un contact électrique (11) assurant le fonctionnement de l'appareil
La figure 3 représente la mise en place du rivet à souder dans le mandrin et son immobilisation par la molette
La figure 4 représente la mise en contact du rivet avec la tôle grace å l'action du piston sur la tige
La figure 5 représente la soudure du rivet sur la tôle ; l'énergie est conduite par le matériau du mandrin
La figure 6 représente la traction du rivet afin de redresser la tôle par effet inverse du piston
La figure 7 représente la cassure du point de soudure par rotation de l'ensemble de l'outil
L'appareil , objet de l'invention , peut être utilisé dans tous les cas où une tôle doit être redressée . I1 peut être utilise pour la répa -ration de tous les objets carrossés en tôle . Les applications les plus évidentes concernent les carrossiers automobiles ; la réparation de cer -tains éléments d'une voiture pouvant être traitee en 3 fois moins de temps et par une main d'oeuvre moins qualifiee Figure 2 shows another section of the device according to the invention -tion
Figures 3, 4, 5, 6 and 7 show the operation of the device according to the invention
The device according to Figure l comprises a body (I), a piston (2), a rod (3) on which is screwed a mandrel (4) composed of a tip (5) receiving the rivet (12) and a wheel (6) serving to immobilize the rivet and an electrical feed bar (7)
The assembly is mounted on a tool holder (8) by means of a captive ring (9) ensuring the rotation of the assembly of the tool to break the welding point. A handle (10) screwed onto the body (1) includes an electrical contact (11) ensuring the operation of the device
Figure 3 shows the establishment of the rivet to be welded in the mandrel and its immobilization by the wheel
Figure 4 shows the contact of the rivet with the sheet thanks to the action of the piston on the rod
Figure 5 shows the welding of the rivet on the sheet; energy is driven by the material of the mandrel
Figure 6 shows the pull of the rivet to straighten the sheet by reverse effect of the piston
Figure 7 shows the break of the welding point by rotation of the whole tool
The device, object of the invention, can be used in all cases where a sheet must be straightened. It can be used for the repair of all sheet metal bodywork. The most obvious applications relate to automobile body shops; the repair of certain elements of a car which can be treated in 3 times less time and by a less qualified workforce

Claims (10)

REVENDICATIONS 1. Appareil à redresser les tôles caractérisé par le fait qu'il comporte un moyen de traction intégré . 1. Apparatus for straightening the sheets, characterized in that it includes an integrated traction means. 2. Appareil à redresser les tôles caractérisé par le fait qu'il comporte un moyen de cassure du point de soudure integre  2. Apparatus for straightening the sheets, characterized in that it includes a means of breaking the integrated welding point 3. Appareil à redresser les tôles selon les revendications 1 et 2 caracterise par le fait qu'il soude un rivet , le tire et le casse 3. Apparatus for straightening the sheets according to claims 1 and 2 characterized in that it welds a rivet, pulls it and breaks it 4. Appareil à redresser les tôles caractérisé par le fait que le rivet est immobilisé dans un mandrin 4. Apparatus for straightening the sheets, characterized in that the rivet is immobilized in a mandrel 5. Appareil à redresser les tôles caractérisé par le fait que le mandrin est usiné dans un matériau conducteur de l'énergie suffisante à la soudure 5. Apparatus for straightening the sheets, characterized in that the mandrel is machined from a conductive material of sufficient energy for welding 6. Appareil à redresser les tôles selon la revendication 1 caracte -risé par le fait que la traction est faite par un moyen assiste ( elec -trique ou pneumatique ) 6. Apparatus for straightening the sheets according to claim 1 characterized by the fact that the traction is made by an assisted means (electric or pneumatic) 7.Appareil à redresser les tôles selon la revendication I caracte -risc par le fait que la traction est faite par un moyen non assiste t mécanique ) 7. Apparatus for straightening the sheets according to claim I caracte -risc by the fact that the traction is made by a means not assisted t mechanical) 8. Appareil à redresser les tôles selon la revendication 2 caracte ~risé par le fait que la cassure du point de soudure se fait par rotation manuelle de l'ensemble de l'outil ; la rotation étant faite par un moyen mécanique . 8. Apparatus for straightening the sheets according to claim 2 caracte ~ risé by the fact that the breaking of the welding point is done by manual rotation of the entire tool; the rotation being made by mechanical means. 9. Appareil redresser les tôles selon la revendication 2 caracté -rise par le fait que la cassure du point de soudure se fait par rotation assiste ( électrique ou pneumatique ) de l'ensemble de l'outil 9. Apparatus straighten the sheets according to claim 2 character -rise in that the breaking of the welding point is done by assisted rotation (electric or pneumatic) of the whole tool 10. Appareil à redresser les tôles selon la revendication 3 carac -terise par le fait que les opérations de soudure , de traction et de cassure du point se font en continu grace à un cycle programme  10. Apparatus for straightening the sheets according to claim 3 charac -terise in that the welding, tensile and break point operations are carried out continuously through a program cycle
FR8313932A 1983-08-30 1983-08-30 Apparatus for straightening out metal sheets. Pending FR2550971A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8313932A FR2550971A1 (en) 1983-08-30 1983-08-30 Apparatus for straightening out metal sheets.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8313932A FR2550971A1 (en) 1983-08-30 1983-08-30 Apparatus for straightening out metal sheets.

Publications (1)

Publication Number Publication Date
FR2550971A1 true FR2550971A1 (en) 1985-03-01

Family

ID=9291893

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8313932A Pending FR2550971A1 (en) 1983-08-30 1983-08-30 Apparatus for straightening out metal sheets.

Country Status (1)

Country Link
FR (1) FR2550971A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0640415A1 (en) * 1993-08-30 1995-03-01 M V Marketing und Vertriebs-GmbH & Co. KG Wieländer + Schill Device for repairing damage to vehicle body parts
FR2755047A1 (en) * 1996-07-02 1998-04-30 Ardwell Production Spot welding system for accident repair of double skin automobile coachwork
WO2001005531A1 (en) * 1999-07-14 2001-01-25 Fronius Schweissmaschinen Produktion Gmbh & Co. Kg Body repair apparatus
FR2833869A1 (en) * 2001-12-21 2003-06-27 Carrosserie Du Foron Two-electrode tool for working sheet metal, uses two insulated electrodes with one sliding over the other to allow operator to weld tool to metal sheet to allow handling of sheet
EP1186357A3 (en) * 2000-09-06 2003-12-10 MV Marketing + Vertriebs-GmbH & Co. KG Wieländer + Schill Holder for a tool for straightening car body components
CN102211118A (en) * 2011-03-24 2011-10-12 苏州市艾西依钣金制造有限公司 Mesh plate leveling method
WO2015067811A1 (en) * 2013-11-08 2015-05-14 Lars Menzer Tool for pulling out dents
CN110252854A (en) * 2019-07-29 2019-09-20 长春市汇腾机电设备有限公司 Self-hammering device that uses compressed air to generate self-hammering force

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3113478A (en) * 1961-12-07 1963-12-10 H & I Tool Dev Company Tool for removing auto body dents and the like
US3801772A (en) * 1973-08-27 1974-04-02 Gen Motors Corp In-ding repair tool
DE2616743A1 (en) * 1975-09-18 1977-03-24 Daido Kogyo Kk METHOD OF REMOVING A DEFORMATION FROM A METAL PLATE
US4376385A (en) * 1980-09-24 1983-03-15 Davis Michael G Slide hammer having spot weldable surface engaging capability

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3113478A (en) * 1961-12-07 1963-12-10 H & I Tool Dev Company Tool for removing auto body dents and the like
US3801772A (en) * 1973-08-27 1974-04-02 Gen Motors Corp In-ding repair tool
DE2616743A1 (en) * 1975-09-18 1977-03-24 Daido Kogyo Kk METHOD OF REMOVING A DEFORMATION FROM A METAL PLATE
US4376385A (en) * 1980-09-24 1983-03-15 Davis Michael G Slide hammer having spot weldable surface engaging capability

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0640415A1 (en) * 1993-08-30 1995-03-01 M V Marketing und Vertriebs-GmbH & Co. KG Wieländer + Schill Device for repairing damage to vehicle body parts
US5546786A (en) * 1993-08-30 1996-08-20 Mv Marketing Und Vertriebs - Gmbh & Co. Kg. Shaping device
FR2755047A1 (en) * 1996-07-02 1998-04-30 Ardwell Production Spot welding system for accident repair of double skin automobile coachwork
WO2001005531A1 (en) * 1999-07-14 2001-01-25 Fronius Schweissmaschinen Produktion Gmbh & Co. Kg Body repair apparatus
AT409727B (en) * 1999-07-14 2002-10-25 Fronius Schweissmasch Prod AUSBEULGERÄT
EP1186357A3 (en) * 2000-09-06 2003-12-10 MV Marketing + Vertriebs-GmbH & Co. KG Wieländer + Schill Holder for a tool for straightening car body components
FR2833869A1 (en) * 2001-12-21 2003-06-27 Carrosserie Du Foron Two-electrode tool for working sheet metal, uses two insulated electrodes with one sliding over the other to allow operator to weld tool to metal sheet to allow handling of sheet
CN102211118A (en) * 2011-03-24 2011-10-12 苏州市艾西依钣金制造有限公司 Mesh plate leveling method
WO2015067811A1 (en) * 2013-11-08 2015-05-14 Lars Menzer Tool for pulling out dents
CN110252854A (en) * 2019-07-29 2019-09-20 长春市汇腾机电设备有限公司 Self-hammering device that uses compressed air to generate self-hammering force

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