EP0033695A2 - Vorrichtung zum Anbringen einer Leinwand auf einem Rahmen - Google Patents

Vorrichtung zum Anbringen einer Leinwand auf einem Rahmen Download PDF

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Publication number
EP0033695A2
EP0033695A2 EP81400144A EP81400144A EP0033695A2 EP 0033695 A2 EP0033695 A2 EP 0033695A2 EP 81400144 A EP81400144 A EP 81400144A EP 81400144 A EP81400144 A EP 81400144A EP 0033695 A2 EP0033695 A2 EP 0033695A2
Authority
EP
European Patent Office
Prior art keywords
clamp
cylinder
piston
frame
machine according
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.)
Ceased
Application number
EP81400144A
Other languages
English (en)
French (fr)
Other versions
EP0033695A3 (de
Inventor
André Chahantian
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.)
CHAUSSURES HELENE Sarl
Original Assignee
CHAUSSURES HELENE 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
Priority claimed from FR8001979A external-priority patent/FR2474381A1/fr
Priority claimed from FR8025418A external-priority patent/FR2495043A2/fr
Application filed by CHAUSSURES HELENE Sarl filed Critical CHAUSSURES HELENE Sarl
Publication of EP0033695A2 publication Critical patent/EP0033695A2/de
Publication of EP0033695A3 publication Critical patent/EP0033695A3/de
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44D—PAINTING OR ARTISTIC DRAWING, NOT OTHERWISE PROVIDED FOR; PRESERVING PAINTINGS; SURFACE TREATMENT TO OBTAIN SPECIAL ARTISTIC SURFACE EFFECTS OR FINISHES
    • B44D3/00—Accessories or implements for use in connection with painting or artistic drawing, not otherwise provided for; Methods or devices for colour determination, selection, or synthesis, e.g. use of colour tables
    • B44D3/18—Boards or sheets with surfaces prepared for painting or drawing pictures; Stretching frames for canvases
    • B44D3/185—Stretching frames for canvases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
    • B27M3/00—Manufacture or reconditioning of specific semi-finished or finished articles
    • B27M3/0006—Devices for fixing fittings into holes

Definitions

  • the invention relates to a machine intended in particular, but not exclusively, for the automatic or semi-automatic installation of fabrics on frames, generally made of wood.
  • the object of the present invention is to remedy this drawback and to allow tensioned mounting of a fabric on a frame by even unqualified personnel, the machine itself fulfilling a certain number of functions automatically.
  • the machine for laying a canvas on a frame is characterized in that it comprises a laterally movable support intended to receive the interior part of the frame, a nailing or stapling head disposed above of said support and of means for ensuring the tension of the fabric before it is fixed to the frame by nailing or stapling.
  • the means of tensioning the fabric consist of a curved clamp mounted on the rod of a jack.
  • the machine consists of a frame 1 at the top of which is mounted a nailing head 2, allowing distribution of the nails one by one.
  • the nails are preferably calibrated upholsterer's seeds.
  • the nailing head is arranged above a support 3 which is intended to hold the frame during nailing.
  • the frame 1 contains all the electromechanical, pneumatic or hydraulic elements ensuring the operation of the machine.
  • Control push buttons 4 make it possible to ensure that the machine is in working order, the control of the operations proper being for example obtained by pedals 5, 6 and 7.
  • the head 2 allows the points, nails, seeds or staples to penetrate into the wood of the frame under the action of a jack 8, for example pneumatic. Nailing heads of this type are known and their description is not necessary.
  • the main originality of the machine consists in the support device for the frame or chassis and in the fabric tensioning clamp.
  • the support generally designated by the reference 3 comprises a part 9 or anvil, movable laterally by sliding inside a part fixed 10, in a "T" groove 11 for example.
  • On the anvil 9 can be mounted shims of thickness 12, by means of a stud 13 penetrating into a blind hole 14.
  • the width of the wood constituting the frame can vary and it is necessary, in view nailing, that all exterior surfaces are at the same level, regardless of the width of the uprights and across the frame, after mounting on the machine.
  • Another feature of the invention is that, as shown in Figs. 11 and 14, the fabric is gripped by a curved clamp 15 so as to be able to simultaneously squeeze several fibers from the weft of the fabric and. pull it without risk of tearing.
  • Figure 2 is a diagram showing the nailing head 2, the nailing cylinder 8 and on this diagram there are two cylinders 16 and 17 for actuating the clamp 15. It is indeed necessary for the clamp to be on the one hand likely to be closed (gripping function) and, on the other hand likely to be displaced (tensioning function).
  • the first function is performed by the jack 16 and the second by the jack 17.
  • the body of the jack 16 is pivotally mounted on an axis 20 integral with the frame of the machine. The jack 16 ensures the opening and closing of the clamp 15 respectively when the fabric is released after nailing and before applying tension to the fabric.
  • the support piece 10 which comprises on the one hand a "T" groove, 11 and, on the other hand means 21 for elastic return of the anvil 9 to its position rest which happens to be the position immediately below the nailing head.
  • This position is obtained automatically when the spring 21 has brought the anvil 9 towards the center, by the action of a ball 22 armed by a spring 23.
  • This ball penetrates inside a notch of the tenon 24, sliding in the "T" piece 11 and secured to the anvil 9 thanks to the bolt 25.
  • the upper part of the anvil 9 has a projection of triangular section 26 allowing the support of the frame or chassis during the nailing operation.
  • FIG. 4 the frame 27 which appears in section is placed, by means of the wedge 12 on the anvil 9.
  • the clamp 15 comes around the edge 29 of the fabric 28.
  • l 'next operation is to close the clamp 15 which is obtained by introducing the pressurized fluid into the inlet pipe 30 of the cylinder 16.
  • the clamp is thus closed and the fabric is clamped between its mac h oires.
  • the tension of the fabric is obtained by pivoting of the jack 16 around its axis 20, resulting from the exit of the rod of the jack 17 .
  • the nailing head 2 descends in contact with the upper surface of the chassis, as shown in Figure 7, and nailing is carried out.
  • the clamp is opened and the chassis is moved by lateral translation to the next nailing position.
  • Figures 8 to 10 show schematically the operations of nailing a canvas on the edge of a frame.
  • the edge of the frame perpendicular to that which is nailed comes into contact with the anvil 9, the anvil is moved to the right by banding the spring 21, as shown in FIG. 9, which allows you to nail the edges or parts of the chassis with spacers.
  • the chassis is then brought back towards the center, the anvil 9 automatically resuming its rest position under the combined action of the spring 21 and the ball 22, then is moved step by step to the left of the figure.
  • Figure 11 shows pliers according to the invention. It comprises two jaws 48 and 49, the movable jaw 49 being articulated on the fixed jaw 48. According to a characteristic of the invention, the jaws are curved so as to grip several threads of the weft simultaneously and thus avoid any risk tear during tension.
  • FIGS. 12 to 14 show a device for jacks making it possible to obtain, with a compact assembly, the dual gripping and tensioning function which is assigned to the clamp.
  • the clamp must be able to immobilize the fabric between its jaws and move to ensure tension before nailing.
  • An advantage of the embodiment shown in FIGS. 12 to 14 comes from the fact that the movement of the clamp is rectilinear and, for example horizontal.
  • a first single-acting cylinder is mounted inside a double-acting cylinder, the purpose of the first cylinder being to effect the closing of the clamp and that of the second cylinder to carry out the traction while the clip is closed on the canvas.
  • FIGS. 12 to 14 the body 31 remains fixed during all of the operations.
  • the clamp is in the closed position and the traction cylinder in the rear position.
  • the clamp itself is mounted on a support block 32 which itself slides inside the body 31.
  • the support block 32 In the rear position or retracted (shown in FIG. 12), the support block 32 abuts against a stop block 33, screwed inside the body by means of an auxiliary part 34 to which two pipes 35 and 36 are connected also connected to an air compressor (not shown).
  • Inside the body 31 are also a piston 37 for moving the clamp and which is integral with the support block 32 and a piston 38 for controlling the opening and closing of the clamp 15.
  • the piston 38 can move inside the cylinder in a chamber 43 under the pressure of a compressed fluid such as air, introduced by a nozzle 39, the forward movement (in the figure) compressing a return spring 47.
  • the chamber 43 is formed in a cylinder 40 secured to the pistan 37 by screws 41, only one of which appears in FIG. 12.
  • the displacement of the piston 38 in the chamber 43 causes the longitudinal displacement of a rod 44 terminated by a shoe 45 forming a cam .
  • the movement of this shoe is guided by a roller 46 pivotally mounted on the support block 32.
  • the clamp itself comprises a fixed upper jaw 48 and a lower jaw 49 pivoting about the horizontal axis 50.
  • the jaw 49 is finished at its lower part by a cylindrical heel 5l. intended to cooperate with the cam 45.
  • a leaf return spring 52 automatically returns the jaw 49 to the open position in the absence of any mechanical stress.
  • the rod 44 is also guided, during its longitudinal displacements by sliding inside the piston 37.
  • the piston 37 moves inside the body 31 under the action of pressurized fluid which is introduced, depending on the displacement to be obtained either by the pipe 35 or by the pipe 36.
  • the piston 37 is secured to the block support 32 by circlips 42 so that the support block 32 follows the movements of the piston 37, while being guided by axes Depending on whether the fluid is introduced via the pipe 35 or the pipe 36, the pressure is exerted either on the block 32 to make it move forward, or on the piston 37 to make it move back.
  • the various seals required have been shown, but not referenced.
  • the machine which has just been described allows even an unskilled worker to carry out a taut pose.
  • the structure of the machine allows the operator to work in front of him, that is to say that he can follow the progress of the work at any time and intervene in the event of an incident. It is also possible to provide several nailing and / or stapling heads working simultaneously or sequentially.
  • the mobility of the anvil is only intended to allow nailing in the corners or at the level of any spacers, the chassis generally being moved manually. In the case where a sufficient number of frames are to be backed up, it is of course possible to provide an automated stepwise movement of the frames.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)
  • Automatic Assembly (AREA)
EP81400144A 1980-01-30 1981-01-30 Vorrichtung zum Anbringen einer Leinwand auf einem Rahmen Ceased EP0033695A3 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8001979 1980-01-30
FR8001979A FR2474381A1 (en) 1980-01-30 1980-01-30 Painting canvas securing machine - has frame support and jaws holding canvas under tension while head secures canvas to frame
FR8025418A FR2495043A2 (fr) 1980-12-01 1980-12-01 Machine de pose d'une toile sur un cadre
FR8025418 1980-12-01

Publications (2)

Publication Number Publication Date
EP0033695A2 true EP0033695A2 (de) 1981-08-12
EP0033695A3 EP0033695A3 (de) 1981-12-16

Family

ID=26221577

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81400144A Ceased EP0033695A3 (de) 1980-01-30 1981-01-30 Vorrichtung zum Anbringen einer Leinwand auf einem Rahmen

Country Status (2)

Country Link
US (1) US4382343A (de)
EP (1) EP0033695A3 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4382343A (en) * 1980-01-30 1983-05-10 Chaussures Helene Stretching machine
FR2616110A1 (fr) * 1987-06-05 1988-12-09 Garcia Pierre Pince a tendre dynamometrique
WO1995030554A1 (en) * 1994-05-06 1995-11-16 Walter Lucchetti Machine for tensioning and nailing a canvas on an artists' frame
CN106394099A (zh) * 2016-11-30 2017-02-15 江门沙龙实业有限公司 一种自动绷画机
CN113500875A (zh) * 2020-07-22 2021-10-15 济南职业学院 自动控制加工制作组件及方法

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4995178A (en) * 1989-09-19 1991-02-26 Randolph Travis M Machine for stretching fabric over a panel frame
US5127866A (en) * 1990-10-29 1992-07-07 Zenith Electronics Corporation Mechanically indexed mask stretching apparatus
DK0650832T3 (da) * 1993-10-27 1997-12-29 Sefar Ag Indretning til opspænding af et vævet stofstykke
US6581260B2 (en) 2000-10-24 2003-06-24 Herman Miller, Inc. Machine and method of securing fabric to a core
WO2009042724A1 (en) * 2007-09-24 2009-04-02 Inventure Laboratories, Inc. Clamp and film stretcher using the clamp
CN102514431A (zh) * 2011-11-30 2012-06-27 无锡凤凰画材有限公司 一种新型画布贴合压平装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1421612A (fr) * 1964-11-07 1965-12-17 Cadre pour tendre et apprêter la toile et procédé d'utilisation
US3882616A (en) * 1974-07-31 1975-05-13 Eugene J Starzyk Stretcher frame for artist{3 s canvas
US4180246A (en) * 1978-10-30 1979-12-25 Richard Guy Apparatus for stretching canvas and like materials

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1315645A (en) * 1919-09-09 Nailing machine for skins and the like
US1745594A (en) * 1928-10-02 1930-02-04 Altman Alexander Fur stretching and nailing machine
US2214738A (en) * 1936-01-07 1940-09-17 Eisenstein Nathan Nailing machine
US2562469A (en) * 1949-05-27 1951-07-31 Bostitch Inc Stretching and tacking implement
US3840167A (en) * 1972-10-30 1974-10-08 Go Controls Inc Apparatus for attaching flexible material to a frame
US4382343A (en) * 1980-01-30 1983-05-10 Chaussures Helene Stretching machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1421612A (fr) * 1964-11-07 1965-12-17 Cadre pour tendre et apprêter la toile et procédé d'utilisation
US3882616A (en) * 1974-07-31 1975-05-13 Eugene J Starzyk Stretcher frame for artist{3 s canvas
US4180246A (en) * 1978-10-30 1979-12-25 Richard Guy Apparatus for stretching canvas and like materials

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4382343A (en) * 1980-01-30 1983-05-10 Chaussures Helene Stretching machine
FR2616110A1 (fr) * 1987-06-05 1988-12-09 Garcia Pierre Pince a tendre dynamometrique
WO1995030554A1 (en) * 1994-05-06 1995-11-16 Walter Lucchetti Machine for tensioning and nailing a canvas on an artists' frame
CN106394099A (zh) * 2016-11-30 2017-02-15 江门沙龙实业有限公司 一种自动绷画机
CN113500875A (zh) * 2020-07-22 2021-10-15 济南职业学院 自动控制加工制作组件及方法

Also Published As

Publication number Publication date
US4382343A (en) 1983-05-10
EP0033695A3 (de) 1981-12-16

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Inventor name: CHAHANTIAN, ANDRE