SE449065B - WITH ENDLESS BANDS WORKING CONTINUOUS PRESS INCLUDING AROUND THE PRESSING AREA LOCAL SEALS - Google Patents

Description

449 065 in direct opposition to the seal discussed above, where the lubricant tends to remove the rubber band from the metal band.

In addition, because the holder receiving the back pressure bearing has a common collecting groove carrying passage channels for the lubricant, a much easier removal of excess lubricant can take place than with the press according to US patent specification 3,215,065.

Of particular advantage is the fact that known continuously operating presses can be supplemented in a simple manner afterwards according to the invention, by, for example, attaching the support with the sliding coating applied thereto and with the seals and connections for supply and removal to two supporting plates. as a module-type completion device.

Further features, details and advantages of the invention will become apparent from the following description of a preferred embodiment shown in the drawings, in which the figures show the following.

Fig. 1, a schematic cross-section through a large-scale press.

Fig. 2, a top view of a special sliding coating with a perforated plate.

Fig. 3, a section along the line III-III in Fig. 2.

The continuously operating press shown in Fig. 1 comprises an upper belt (not shown in the endless cycle) and also a further lower belt 6 movable in the endless cycle, between which the mat 7 is transported in the conveying direction during simultaneous pre- and finished pressing. On the back side 9 of the belt 6 facing away from the mat, a sliding coating 13 abuts within the entire press area, which may for example consist of rubber which has been vulcanized on the support 14. 449 065 The entire substantially rectangular press area resp. the sliding coating 13 is surrounded, likewise rectangular, by a seal 23 formed in its entirety in one piece, surrounding the entire press area.

This seal consists of an elastic plastic material and has a sealing block 24 with an opening 25 for receiving a screw 26, which is screwed into a holder block 27. The head of the screw is hereby brought into abutment against a vulcanized base plate or a flat iron 28 with corresponding screw holes, so that the seal is pressed with its entire surface against the holding block 27. In the direction of the pressing area, a lip 29 extends from the sealing block 24 with a sealing edge 30, which abuts against the underside 9 of the belt 6. This lip 29 is pressed by means of a plastic strip 31 close to the underside 9 of the belt 6 and is mounted in a groove in a holder which is denoted in its entirety by 32, and which has a schematically indicated passage channel 33 to a collecting groove denoted in its entirety by 34.

Fig. 2 shows a special sliding coating 13 in shortened manufacture, which forms the entire rectangular pressing area in the conveying direction 8. In this preferred embodiment, a castable plastic, preferably polytetrafluoroethylene, is cast on a schematically prepared perforated plate 50, the individual holes 51 on the plan view (shown in side view in Fig. 3) are countersunk and thereby transition to a conical bore. At the center, the sliding coating 13 can be further attached. In each case, there is the opening 16 for releasing the lubricant.

As shown in Fig. 3, the perforated plate 50 has a laterally projecting area 52 relative to the transport direction 8, which is fastened by a flat iron 53 with a corresponding recess by means of an overlying portion 54 to a holding plate 38. The flat iron 53 is lower than the in Figs. 2 and 3 do not show the back side of the belt.

Claims (1)

449 065 Claims Continuous press, preferably for the production and / or coating, veneering and the like of a single- or multilayer flat web of prefabricated material and / or raw material, in particular of one with at least one binder, lignocellulosic and / or cellulosic particles such as wood shavings, wood fibers or the like having a mat (7) mating between the upper portion (6) of a lower and the lower portion of an upper at an endless cycle speed moving band preferably of steel, the bands facing away from the mat back sides via a sliding coating (13) lubricated with a liquid lubricant abut against a bearing (38) which extends in the transverse direction of the transport direction over the total width of the press area and is arranged directly at the back side of the belt, in the transport direction at both the front and rear ends of the sealing area as well as parallel thereto at each of its sides a seal (23) is arranged, characterized therein v, that the seals (23) are designed in such a way that they comprise in one piece the entire pressing area, that the seals consist of a block (24) of elastic plastic, to which a lip (29) with a sealing edge (30) connects, that the lip is pressed against the belt (6) by means of a counter-pressure bearing (31), the counter-pressure bearing being constituted by a plastic belt arranged in a groove in a holder (32), and that said holder (32) has passage channels leading to a common collecting groove (34). (33) for the laterally extending at the belt (6) and the lubricant retained by the sealing edge (30) on the lip (29).