FR2804632A1 - Large size press unit for manufacture of building insulating panels comprises injection machine above press plate accessible by ladder allowing peripheral injection of reactive products - Google Patents

Abstract

The press unit comprises an injection machine (19) which is located above a press plate (2) and rests on a platform (14) and is accessible by a ladder (15). The injection machine can translate overhead enabling the reactive products to be injected with a flexible injection hose (20) in the periphery of the pressing unit. Two handling cranes (16) are located at the ends of movable tables (1) and fixed to table translation rails (17). an INDEPENDENT CLAIM is also included for the clamping of the upper plate onto the lower table.

Description

 LARGE DIMENSION PRESS UNIT WITH MECANO-PNEUMATIC TIGHTENING FOR THE MANUFACTURE OF RESISTANT AND INSULATING PANELS FOR THE BUILDING.

It is known that the manufacture of various panels is obtained under presses. These press units are generally of a design that cannot allow the manufacture of large resistant and insulating panels for the building. The production of these panels must be carried out in press to maintain the strong expansion thrust of the reactive products.

The presses, generally of medium size, are of the “wallet” or multi-stage type. It is known that the design of these presses limits the sizing of the panels and cannot allow the production of panels of large areas.

It is also known that these presses, for holding or pressing, are designed from very sophisticated mechanical parts and hydraulic systems. The maintenance of this equipment is very delicate, the cost is not to be overlooked. In the event that the hydraulic or mechanical pressing components are deficient, production should be discontinued.

In addition, these press units are of a detrimental size, the machine for injecting the reactive products taking an important place near the presses. In addition, low-pressure machines for injecting reactive products have a limited range of action due to pressure losses in long piping.

It is known that these presses do not easily, or even not at all, make it possible to obtain an adjustment intended for different types of panels. Each press is built according to their thicknesses.

The design of these presses, for maintaining the pressure of expansive products, requires the use of metal profiles of large sections. The present invention is characterized by disregarding any sophisticated electro-mechanical mechanism, which allows unskilled labor for the maintenance of this small unit, and the production of various panels.

The present invention is characterized by avoiding the interruption of production in the event of incidents of tightening of the press plate, the mechanical-pneumatic tightening allowing manual blocking very easily.

The present invention makes it easy to position the press plate at the correct height, regardless of the manufacturing thicknesses. The mechanical-pneumatic clamping elements comprising spacers of different dimensions.

The present invention is characterized by the manual operation of the entire press, for the handling of raising and lowering of the upper plate and by the tightening of this plate (2) on the table (1) of lower molding. This provision allows the injection of expansive reagent products for the manufacture of panels, in the event of incidents on the mechanical-pneumatic clamping (8), or mechanical cylinders (26).

In the present invention, the injection machine (19) is mounted on a carriage resting on rails, themselves positioned on the platform (14) above the upper molding plate (2) thus freeing up significant space around the press set. In addition, this arrangement allows injection (20) at the periphery of the panels to be produced on the press assembly.

The present invention is characterized by the presence of orientable brackets (16) located at each end of the mobile tables (1) and fixed on the rails (17) for translating the mobile tables. This positioning avoids having to use expensive concrete slabs to maintain these potenqes, it is disregarded of any grip in the ground, and the presence of overhead cranes. The present invention is characterized by the dimensions of the press plates (1) (2) which have no specific limitation, 8.50 m in length and 3.20 m in width (non-limiting example), by the presence at judiciously chosen distance of mechanical-pneumatic or hydraulic pressing assemblies of the present invention.

The number of these pressing assemblies is not limiting, allows the manufacture of long presses at a competitive cost by the absence of sophisticated and expensive electro-mechanical hydraulic supplies.

The present invention has the particularity of using only commercial metal profiles without rectification and without drilling or tapping these profiles. The profiles being supplied at definitive lengths without cutting, during the manufacture of the presses, which allows an economical construction price to be obtained

The present invention is characterized by its clamping system. The upper plate (2) is equipped with a holding system allowing the thickness to be adjusted between the upper plate (2) and the lower plate (1), slides (4) are positioned on the upper plate (2), distance chosen according to the pressures to be maintained. A clamping axis (3), passing through these slides, is provided with a cylindrical lug (5) which comes to bear on a metal part (6) welded on the lower table (1), the rotation of this axis (3) operated by a handling arm (7) which itself fixed to a rotation arm connected to a pneumatic or hydraulic cylinder, (8) drives the lug (5) in a position perpendicular to its initial position, makes this rotation the cylindrical lug (5) by its specific geometry naturally exerts a pressure on the fixed part of the metal part (6) integral with the lower table, which ensures a tightening of the plates (1) (2) without use any adjustment.

The present invention allows this axis (3) of a fixed length, to obtain a variable clamping length by adding or removing washers of different thicknesses (11). The washers (11) resting on the upper part of the part (7) are placed from the upper part of the axis (3) lengthens or reduces the clamping length. The change of these different washers is carried out simply by unscrewing the nut (10) from the threaded part of one axis (3). In the event of an incident on the jacks (8), the present invention is characterized by the possibility of manual rotation of the axis (3) ensuring the tightening of the plates (1) (2), by uncoupling the axis (9) of the jack (8), making manual rotation of the axis (3) driven by the part (7) using a clamping lever (24).

The present invention is also characterized by its system for blocking press plates, by the absence of pneumatic or hydraulic cylinders used in current presses to contain the pressures generated by the expansion of reactive products. The manufacture of panels with, injection of expansive products, does not require pressing said panels before injection, but maintaining the dimensions during the expansion of the reactive products.

The presence of the pins (3) located along the length of the plates (1) (2) allows precise spacing of the plates without any pressure, and ensures constant spacing by the stop of the lugs (5) of the upper plate (2) on the parts in contact (6) of the lower plate (1) without possibility of displacement, the pins being dependent on the axis (3) of the slides (4) of the rotation arms (7) of the spacing washers (11), all these parts being held by the nuts (10) of the axis ends (3).

The present invention is characterized by the sandwich-type design for clamping the two plates (1) (2) relating to the construction of this press. In the other presses, the pressures generated by the reaction of the expansive products are maintained by punctual pressing, with a very significant reinforcement of the external metal frames or come to take support of the hydraulic or mechanical jacks, which must exert a clamping pressure.

The present invention excludes this principle of pressing, maintaining the pressures by pins pins (4) (3) (5) (6) (7) (10) regardless of the width of the spacing of the external longitudinal beams press plates (27) to contain the strong expansion of the reactive products. The present invention is characterized by manual operation in the event of an incident on the mechanical jacks (26) for raising and lowering the upper press plate (2). The four mechanical cylinders with incorporated motor (26) are connected by a set of transmission shafts (28) and angle transmissions (29) with a box controlled by a removable flywheel. The position of the jack (8) retracted rod controlled by a proximity switch (12) authorizes the injection of reactive products, the other position of the jack (8) rod output controlled also by a proximity switch (13) allows the operation lifting platform (2) without risk of causing damage to the lifting system (26).

In the event of a motorization incident, on one or the four mechanical cylinders (26), the motors being switched off, the raising or lowering of the upper press plate (2) is ensured by the incorporation of the crank (30 ). Manual rotation of the latter, drives the body of lifting cylinders (32) by means of a sliding sleeve (31) itself positioned on the transmissions (28).

The present invention is also characterized by its production principle, the press assembly composed of three pressing elements, two movable tables (1) lower, an upper pressing plate (2). The preparation intended for manufacturing is carried out on one of the tables (1), the other table (1) having been prepared is directed under the pressing plate (2) by means of a geared motor (25) equipping the table mobile (1), this table provided with wheels, rests on rails (17) for the translation thereof. During the time of injection and curing of the reactive products of this preparation, another preparation is carried out on the second table (1) which then, after leaving the first table (1), is positioned in turn under the tray pressing (2) and the injection thereof is carried out. The description of this manufacturing principle shows that it is alternated, and that it is possible to manufacture one type of panel on one of the tables and a different panel on the other table. The accompanying drawings illustrate the invention

Figure 1 shows:

Figure 2 shows:

Figure 3 shows:

Figure 4 shows:

Figure 5 shows:

Figure 6 shows: cylinder

Figure 7 shows: cylinder

Figure 8 shows:

Figure 9 shows: manual

Figure 10 shows: mechanical cylinders

FIG. 11 represents: manual the longitudinal view of the press unit the transverse view of the production unit the aerial view of the production unit the pressing position of great thickness the position of pressing of small thickness the operation clamping opening by

the tightening closing operation by

manual tightening opening maneuver tightening closing maneuver

the aerial view of lifting the platform by

the aerial view of lifting the cover

Claims (7)

1) The present invention relates to a press assembly, the manufacture of which is carried out with standard commercial metal profiles without sophisticated mechanical parts and without group supplies and hydraulic jacks necessary for maintaining the high pressures inherent in the expansion of the reactive products injected into the panels to be obtained, characterized by a compact assembly of the press unit, the injection machine (19) located above the press plate (2) and resting on the platform (14) is accessible by a staircase (15) and frees up a lot of floor space. 2) The present invention relates to the possibility of longitudinal air translation of the jtιachιne (19) (21) allowing to be able to inject the reactive products with the injection hose (20) at the periphery of the pressing assembly. 3) The present invention is characterized in that two orientable handling brackets (16) are located at the ends of the movable tables (1) and are integral with the rails (17) for translating these tables, without having to use anchored concrete blocks. in the ground. 4) The present invention is characterized by its system for clamping the upper plate (2) on the lower table (2). Axles (3) passing through slides (4) comprising at one end a locking lug (5) and at the other end a nut (10). By the gyration of the axis (3) using the rotation arm (7), the lug (5) comes to bear on the cleat (6) making integral the upper plate (2) and the lower movable table (1) with impossibility of spacing after injection of the expansive reactive products. The clamping axes are controlled by a mechanopneumatic system (7) (9) (8) 5) The present invention is characterized with regard to manual movements of tightening and raising-lowering of the upper plate. The clamping pins (3) connected to jacks (8), provided with pins (9), by the rotation arm (7) are deposited making manual operation by a removable lever (24) 6) The present invention is characterized by, the clamping pins (3) which allow the manufacture of panels of different thicknesses without difficulty, washers of variable spacing (11) are interposed above the slides (4) by unscrewing the nut (10) the number of washers (11) determines the clamping thickness between the upper plate (2) and movable table (1). 7) The present invention is characterized by the possibility of manual raising and lowering of the upper plate. The upper plate is raised and lowered by means of four electro-mechanical cylinders (26), in the event of an incident on these cylinders, the operation of the upper plate (2) is done manually using a transmission assembly (28), a shaft of which is connected to a bevel gear (29) equipped with a declutching system (31) itself connected to a removable crank (30) actuated manually. The operation of raising or lowering the upper press plate (2) is controlled by the proximity switches (12) (13)