摘要:
A wall supporting arrangement, especially for supporting mine gallery walls, comprises a supporting frame for a wall to be supported and including at least two frame elements located in a plane which is transverse to the elongation of the wall and are spaced from one another in this plane, and a plurality of shape-retaining shell-shaped connecting elements distributed along the frame elements and connecting the latter with one another in spacially fixed relationship. The supporting frame may include two such outer frame elements and two such inner frame elements connected with one another. In this case each of the connecting elements includes two shell portions connected with one another and including mounting formations for mounting the four frame elements with one another. The supporting frame may include a plurality of frame portions located laterally adjacent to one another in a circumferential direction of the supporting frame.
摘要:
The invention relates to a cycle press, in particular a short-cycle press, for producing and/or coating board-shaped materials, in particular engineered wood boards, comprising a press body having several press frames arranged next to one another in the longitudinal press direction, and further comprising an upper press plate and a lower press plate, wherein pressing cylinders supported on the press frames act on the upper press plate or the lower press plate. According to the invention, said cycle press is characterized in that the pressing cylinders are attached to the press frames by means of frame pins, wherein said frame pins engage in cut-outs of the press frames. Thus, the pressing cylinders can be prestressed against the press frames.
摘要:
A press for pressing a mat into a thin panel has a press frame, upper and lower press plates on the frame, and upper and lower press belts having confronting lower and upper stretches defining a press gap extending in a horizontal and longitudinal transport direction and respectively running below and above the upper and lower press plates. Upper and lower flexible intake plates are juxtaposed respectively above and below upstream ends of the lower and upper stretches of the belts and define therewith a downstream portion of an intake mouth flaring upstream. Upper and lower rollers are respectively braced against the upper and lower stretches of the belts at an upstream portion of the intake mouth immediately upstream of the downstream portion of the intake mouth. Further actuators connected to the rollers set a shape of the upstream portion of the intake mouth.
摘要:
The pressure measuring device has a housing in which a pressure chamber is located in a pin extending freely in the interior of the housing from a base. The pressure chamber wall is deformable elastically under an applied pressure. In the free end portion of the pin a magnetoresistive sensor is mounted which is moved with the chamber wall in a displacement occurring because of pressure changes in the chamber and thus is displaced relative to a permanent magnet. The magnet is mounted slightly transversely in the end portion of a compensating sleeve which surrounds the pin with wall contact. The change of the magnetic field at the sensor on displacement causes a proportional resistance change of the sensor so that an electrical signal proportional to the pressure change is generated which is a measure of the pressure. An amplifier for the signal from the magnetoresistive sensor can be mounted inside the housing adjacent the permanent magnet or the magnetoresistive sensor. Also advantageously the space between the housing and the compensating sleeve can be filled with insulation to further reduce temperature compensation requirements.
摘要:
The invention relates to a cycle press, in particular a short-cycle press, for producing and/or coating board-shaped materials, in particular engineered wood boards, comprising a press body having several press frames arranged next to one another in the longitudinal press direction, and further comprising an upper press plate and a lower press plate, wherein pressing cylinders supported on the press frames act on the upper press plate or the lower press plate. According to the invention, said cycle press is characterized in that the pressing cylinders are attached to the press frames by means of frame pins, wherein said frame pins engage in cut-outs of the press frames. Thus, the pressing cylinders can be prestressed against the press frames.
摘要:
The invention relates to an installation for applying glue to fibers for the production of fiberboard, especially MDF board or similar wood material board. Said installation comprises a fiber feed unit having at least one fiber feed conduit which opens into a fiber exit tube via a fiber deflection element and receives the air that is used to transport the fibers, a chute which is located downstream of the fiber exit tube, a glue application device which has spray nozzles for spraying the fibers that emerge from the fiber exit tube and enter the chute with drops of glue, and a collection device, located downstream of the chute and having an air-permeable transport belt for collecting and optionally carrying off the fibers and a suction device located below the transport belt for suctioning air from the chute through the transport belt, the suction device having one or more suction boxes to which one or more suction pipes are connected. The installation is characterized in that the suction boxes are configured as cleaning boxes having at least one cleaning device for removing fibers that enter the suction boxes through the transport belt.
摘要:
The invention relates to a frame press having a plurality of press frames (1) arranged one after the other, wherein at least one stationary press plate (2) is present and furthermore a press plate (2) is provided which is loaded by means of working cylinder piston arrangements (3) and which can be moved against the stationary press plate (2). On two opposite outer sides (8) of the press, at least two guide columns (5) arranged at a distance to each other are provided, respectively, and each guide column (5) is guided through at least one associated guide opening or through at least one associated guide channel (6) when the press plate (4) which can be moved is moved.
摘要:
A press for crimping longitudinal edges of a plate for the manufacture of pipe has a closed press frame, an upper press platen, and a lower press platen extending longitudinally through the frame. A pair of transversely spaced and transversely shiftable upper supports are provided on the upper platen, and a pair of transversely spaced and transversely shiftable lower supports on the lower platen. Respective upper dies are fixed in the upper supports and have downwardly directed lower faces, and respective lower dies are fixed in the lower supports and have upwardly directed upper faces. A piston/cylinder assembly braced between the frame and one of the platens and pressurizable to shift the one platen vertically toward the other of the platens. Hydraulic actuators may position the holders and their dies transversely and also lock them in place.
摘要:
A continuous press for the production of pressed board comprises an inlet mouth of the steel belts, between which the comminuted material is pressed, which has its contour adjustable by imparting a bending moment to a cantilevered tongue of the respective press platen. The positions of the tongue are set by shifting a slider on the respective press beam to allow a step of a respective abutment staircase to engage a counter bar. The slide has a piston and cylinder setting drive.
摘要:
An apparatus for the contactless measurement of geometrical dimensions includes a light source emitting a light beam, a first deflector deflecting the light beam at an angle toward an object to be measured, a receiver receiving the light beam and a second deflector for deflecting the light beam reflected by the object toward the receiver. The second deflector rotates about an axis extending perpendicularly to the light beam reflected by the object. The axis of the light beam emitted by the light source extends parallel to the axis of rotation of the second deflector. The light beam conducted to the receiver extends coaxially to the axis or rotation of the second deflector. This apparatus requires no calibration, but only an adjustment. For measuring a distance it is sufficient if only the second deflector rotates. If both deflectors rotate, the second deflector must rotate at a substantially higher rate of rotation than the first deflector. The first deflector is vertically adjustable and lockable. Also, the unit formed by the light source, the two deflectors and the receiver may be rotatable about an axis and movable in longitudinal direction of the axis extending parallel to the axis of rotation of the second deflector.