FR2633216A1 - Press for stamping supports having a fragile face with action of a die on a single face - Google Patents

Abstract

The invention relates to a press which makes it possible to deform a malleable support, one very fragile face of which does not support any mechanical contact. It consists of a metal "box" 1 open via an operator-side slot permitting positioning of the support to be deformed 6 between two clamping elements 4 and 5. A die 9 deforms the support without any contact with the upper face of the support. At the end of stamping, the movable elements 4, 9 and 10 return to the "rest" state (drawing 1) and the deformed support 5 may be withdrawn. The device according to the invention is intended particularly for embossing photographs or reproductions in order to give them an impression of relief.

Description

DESCRIPTION
This press is suitable for deformation of all fragile supports by their nature or their coatings.

 The photos or reproductions are generally presented on flat surfaces. Fashion likes more or less "domed" images to give an impression of relief.

 This device makes it possible to deform the image and its support without damaging the surface condition of this image.

 The support is first immobilized by a mechanical system (here a double frame) pinching it around the edges on non-fragile or unseen parts.

 In a second step, the deformation is produced by a matrix giving the desired relief, without a counterform of this matrix being necessary.

 The mechanical immobilization system and the matrix are interchangeable to be able to measure the support to be deformed.

 The movements for clamping and stamping are made here by pneumatic single-acting cylinders.

 The tightening power is adjusted and controlled by a pressure switch.

Limit switches on stops control the drawing.

 When all the parameters are positive, the elements return to their initial state by granity (return of the matrix and loosening of the support).

Figure 1 shows in section the device on standby, in the rest state
Figure 2 shows in section the tightening.

 Figure 3 shows in section the stamping.

 STRUCTURE: The device shown in Figure 1 comprises a rectangular parallelepiped (1) open on the loading side, made here of steel to withstand, in accordance with the resistance calculations of the materials, the forces exerted by the clamping cylinders (2) and drawing (3).

 A fixed frame (4) and a movable frame (5) constitute the clamping system. They are in the format of the image to be deformed (6) and sufficiently separated to let out the curved image.

 Positioning pins (7) are fixed on the lower frame (5) and are housed, at the time of tightening, in recesses (8) made in ri.

 The actual matrix (9) is of a shape suitable for the desired effect and of dimensions slightly smaller than the frame 5.

 A system (10) guides the movable elements and stops (11) limit the travel thereof.

OPERATION
Figure 1 shows the device at rest, with the support to be deformed (6) positioned between the pins (7) and the clamping elements (4 and 5).

 In Figure 2, by an action of the operator, the lower clamping element (#) is applied against the upper element (5) under the thrust of the clamping cylinders (2). The "O" contact of a pressure switch, placed on the supply of these cylinders indicates the moment when the tightening power is sufficient and triggers the next phase.

The cylinder (3) is actuated, the matrix (9) slides inside
'lower clamping element and deforms the support (6) until the guide elements (10) touch the stops (11).

 Figure 3, in section, shows the end of the bending.

 The contacts "F" through which the supply passes are actuated, the single-acting pneumatic cylinders resume the "rest" state and by granity, 5, 9 and 10 descend again; the system returns to the state of Figure 1. it is then possible to extract the deformed support.

 The device according to the invention is especially intended for the deformation of photos, reproductions or any images previously fixed on a malleable support.

Claims (6)

 1) Press device for stamping supports (6) having a fragile face characterized in that all the elements are inside a "Tunnel" of rectangular section (1). The support to be deformed is introduced into a clamping device (4 and 5) which holds it to deform it with the action of a matrix (9) on one side of the support.  2) Device according to claim 1 characterized in that no counter form accompanies the support 6 during its deformation.  3) Device according to claim 1 characterized in that the clamping elements (4 and 5) and the matrix (9) are interchangeable to be commensurate with the support to be deformed.  4) Device according to claims 1 and 3 characterized in that the matrix (9) is simply placed on a movable and guided part (10), this matrix being itself guided by the lower clamping frame (5).  5) Device according to any one of the preceding claims, characterized in that the mobile parts (5 - 9 and 10) are moved by pneumatic single-acting cylinders, the return to the "rest" state (figure ii being done by gravity.  6) Device according to claim 1 characterized by positioning stops (7) on the movable clamping part (5) which will be housed in cavities (8) formed in the fixed clamping part (4).