DE2602822A1 - Flow production press for intermediate materials - works uninterruptedly delivering resin bonded cellulose building components - Google Patents

Abstract

Building elements and timber substitutes are produced from resin-bonded cellulosic materials such as wood chips, oil seed residues, reeds and esp. straw. Initially the press piston encounters no resistance. When the finished product flowing away is breaed a counter pressure develops, and this is altered as required to produce dense or low density materials of any desired specific gravity. Compared to the output of a ten stage hot and cold platen press requiring 8-10 men to operate it, the prodn. of the continuous flow press with two men is >= 1.65 times better, and more economical of heat energy.

Description

Description "A press with adjustable back pressure

for the "flowing ejection of a material of different species weights".

Application area: The invention relates to a press on the masses cellulosic such as wood chips, hemp, oil cake = residues, sceilf and straw become stable Walls, ceilings and doors for residential construction, such as pipes, panels of any kind are to be produced for furniture and industrial supplies.

Purpose: The currently occurring mass celluloses such as straw and others Pressed into new materials to be returned to the economy.

State of the art: The pressing of wood chips and other masses = Cellulosic (except for reeds and straw) on large multi-level presses is known.

Criticism of the Prior Art These have just been described for a long time claim = the working methods are compared to the "extrusion" to be outdated E.g., the many work steps required here, along with the major technical ones Equipment, such as pouring the pressed material onto the press plates, weighing the masses, that Pre-pressing, filling the magazines, loading and unloading the PreBe, the supply the many press plates require a considerable labor and labor requirement Time.

In contrast, "extrusion" as modern is simple with little Equipment and manpower expenditure ten and only in one The work processes flow evenly, superior to the stack press.

Task: The invention is based on the task of mass cells = lulosen like straw simply and economically and mainly through the possibility of change of the back pressure due to the generated new material itself, different densities and thus to be able to "create fluent" different species weights.

Solve To understand the "extrusion" with changeable counterpressures The following can be said: A medium can only be pressed then if a pressure is exerted on this in a rigid frame and the frame this opposes a greater one. These mechanical conditions also remain mine Invention exist, only with the difference that the Ge = required for pressing counter pressure only outside the press and only from the new material to be pressed or material generated against the pressure of the plunger acts back into the press, so as to An explanation is required for these determinations.

Is located on the work table or in the work surface of the press a (let's say) a rectangular hole into which a "cylinder" of this kind is perpendicular hooked; and was fastened. In this "cylinder" there are 2 counter-rotating Piston. The upper one is the (hydraulically or mechanically moved up and down plunger The lower piston is slidably fitted into this "cylinder" Eating, however, is adjustable in its sliding downwards braked However, only so firmly that when one is exerted by the pressed material on it, a maximum (or set) pressing pressures evasively moves down in the "cylinder".

This work process is now being carried out on an ongoing basis Place or zone of the "cylinder" this is to 150 to 170 ° C. The glue is now in intimate connection with the pressed material (straw) and is in the following Zone cooled to 25 to 30 ° C, whereby the pressed material becomes a new material (see P 25 53 968.8) Hrrtzell called aushärteb. This now so produced new and hard Material slides between these comprehensive braked crawler tracks on all sides its braking or contact pressure with the counter pressure just pressed is identical. (When the piston emerges, it is put aside.) The jerky New hard material moving up "fluently" slides onto a cutting table where it is cut to the endspre = needs. For further explanation is still to say that 1) by releasing the pressure pressure on the lower piston or afterwards on the new material, which will give way to the upper pressure more easily can.

2) if the brake pressure is increased even more on the piston or on the new material, this now only in the vicinity of the maximum pressure peak of the Press or the pressure itself will evade.

Between these two presses, the density of the new one changes Material, whereby depending on the brake or gap pressure, many types of weights of the same new material can be generated.

Another embodiment of the invention.

It is underlined again that the required counter pressure is not generated in the press itself but by setting the braking zone, i.e. from the material that has already been produced is propagated back to in front of the plunger.

That the whole work process is not interrupted by work cycles but runs "fluently".

Achievable advantages: When comparing the two pressing processes 1a) of the process interrupted in work cycles for a 10-day press service a 10 storey press 1.8 WxL5.1 m = 9.18m² 9.18x10 = 91.9m² / 48 min.

Ib) and the "flowing" pressing process.

in 48'x60 '' = 2880 '' feed = 5.3cm / sec times 2880 = 152.60 m² / 48 min - 1.65 x more Workforce required: 8 to 10 men 2 men Die in the multi-storey presses heat energy required to heat up 150 to 1700 C, which is then passed through Water (cold) is destroyed has been left out of consideration here.

Description of several handles.

1c) It could take 2 prefabricated houses in one hour Walls are created for 1a) 1d) With an exit cross-section of 4 x 200 cm every 16 sec. an apartment door with a width of 85 cm must be cut off. In 24 hours = 60'X 60 '= 36001x 24h = 86400: 16 "= 54oo pieces / 24h; This daily output would be equivalent to a monthly output of a medium-sized plant.

When comparing la) Examples 1c) and 1d) it can be seen that "extrusion" is far superior to multi-stage pressing.

Description of the reference characters of the drawings: to FIG. 1 1 scavenging piston 2 Press piston path 3 Pressing part in the press zone.

4 counter pressure piston 5 upper additional band 5a lower additional band 6a + 6 Guide rollers 7P heating zone 8 molding compound filling = funnel.

9 Piston path to be supplied 10 Pre-compression piston path to Fig. 2 7P Heating zone 8P cooling zone 9P braking zone 8P1 Execution of the tape layer.

9P1 pressure caterpillar tracks (shown as rollers) 9P2 pressure device 10P brake disc 11P hydraulic brakes = sen.

4a counter pressure piston.

Renewal.

Claims (1)

Patent claims preamble: The invention relates to a press of the masses = cellulosic such as wood chips, hemp, oil cake residues, reeds, straw and Others to new materials economically, in contrast to stack presses, without Working cycles and interruptions can be pressed with flowing outputs. The invention relates to a press which initially works against unpressurized. First when the finished product is braked before it flows out and thus a compaction of the medium and the accumulated back pressure propagated to the front of the plunger in order to generate the desired counter pressure here. The invention relates to a press on the media with changeable Counter-pressure, denser or less dense fabrics, i.e. fabrics of different types of weight tes can be blackmailed. Marking = the part: 1) Characterized that the pressing takes place without work cycles and the product, as in the flow, is continuous fluently leaves the press 2) characterized in that the press counter pressure = that the required counter pressure is only achieved through the variably adjustable Braking of the finished product, before it leaves the press, by backflow of the This simultaneously compresses the medium up to the plunger. Generic term of the sub = claim: 2) extrusion according to claim 1) without counter pressure or with variable To press back pressure. Identify = the part of the subclaim: Identified by the fact that the plunger itself as well as the outlet opening on the braking section for the Finished product, or the finished product itself, have any cross-sectional shape or size can.