DE2815300C2 - - Google Patents

Description

The invention relates to a security device with a limit switch for the drive shutdown of the machine control of a waste press standing type according to the generic term of the Main claim.

For the presses mentioned above, which are in the current time for elimination through packaging of office waste, cardboard boxes or similar Packaging materials to an ever increasing extent There are employers who use them shaft u. Associations extremely strict regulations in terms of operational safety in relation to  the operating personnel. For example, for the press manufacturers are mandatory, the mostly separate doors of the filling and of the entire press shaft via limit switches o. The like. To ensure that the entire drive system is immediately de-energized if one of these Doors are unlocked or opened.

All systems currently on the market different designs meet this requirement through limit switch-like individual protection each of these doors, as well as circuitry ent speaking, electrical connection of these ge separated security points with the machines control, but the resulting are Disadvantages especially in the technically diverse and therefore expensive elements and installation of these double safeguards.

Electrical safety switches for the above mentioned purpose are with waste or balers of the generic type also already from the DE-OS 21 45 704 known, but there as a so-called. Height-adjustable limit switches for the motor block tion when reaching a predetermined height  of the waste bale to be compressed, and thus not for the intended purpose of the shaft here door security.

There are also electrical safety switches for the doors or flaps of household garbage compression systems known from DE-GM 73 00 998. On the one hand, however, they do not work themselves active, but are using special keys activated and on the other hand they only serve the prevention of unauthorized use by third parties People.

The invention, however, is based on the object with a waste press of the type mentioned to further develop the safety devices in such a way that the required system safeguards should be developed in such a way that the grooved system protection of both doors is made possible via a common limit switch.

This task is solved by the patent claim 1 specified building materials and measures. The sub-claims contain further advantageous Design features of the solution of the main claim.

The structure and mode of operation of the invention are also based on a graphic embodiment explained in more detail below. It shows

Fig. 1 is a schematic perspective illustration of a stationary waste press,

Fig. 2 shows the detail at "A", that limit switches and actuating member in view,

Fig. 3 is a plan view of Fig. 2 and

Fig. 4 is a partial side view of FIG. 2.

According to the perspective system representation in FIG. 1, the press shown has, in a manner known per se, the areas a lying one above the other for drive elements, feed chute b and press chamber (press chute) c .

Filler Preßschacht b and c are connected by a joint via hinges 1, horizontal ausschwenk bare shaft door 2 with the locking mechanism 3 is covered, where the frame 2 a of the shaft door 2 for the region of the filling shaft b zusätz Lich a horizontally about an axis (horizontal axis) 4 is arranged separately from pivoting filler flap 5 with its own locking 6 .

According to the invention it is now provided that the horizontal axis 4 protrudes at one end from the frame 2 a of the shaft door 2 with a free stub shaft 4 a and this a switch head 9 as a double-acting actuator with two mutually offset switching curves 7 and 8 with common seeds Curve intersections 10 has, at which in the operating position with the shaft door 2 closed and with the filler flap 5 closed, a switching pin 11 of the end switch 12 seated on the waste press rests so that it stops the machine control when the shaft door 2 and / or the filler flap 5 is opened . In a special construction construction, it is also provided that the two switching curves 7 and 8 lie in two mutually perpendicular planes, the switching head 9 and the associated end switch 12 being located on the side of the shaft door 2 with the hinges 1 .

The operation of this safety device is now the following:

• a) If the filler flap 5 is pivoted down with essentially vertical movement component, that is to say opened, by releasing the locking mechanism 6, the switching curve 7 moves according to the direction of arrow B in FIG. 4 by rotating the horizontal axis 4 and the switching head 9 arranged firmly thereon about 90 °, so about to B ' further, whereby the switching pin 11 of the limit switch 12 is pressed by the dimension x , the machine control is thus de-energized.
• b) If, however, open the bay door 2 after dissolving the INTERLOCKS development mechanism 3 about the hinges 1 and swung out, by the frame 2 a with the axle journal 4 a projecting breaker head 9, a slide past the switching curve 8 causes - the direction of arrow C in Fig. 3 - to about the level, or the imaginary point C ' in the curve intersection 10 and thereby also depressed the switching pin 11 of the limit switch 12 by the dimension x and has de-energized the machine control.

This arrangement according to the invention, which cannot be manipulated in any way, is thus absolute safety for the operating personnel given.

Claims (3)

1. Safety device with limit switch ( 12 ) for stopping a machine control system of a waste press of a standing type for a lockable filler flap ( 5 ) and a lockable shaft door ( 2 ) for filler or press shaft (b or c) , the areas lying one above the other Filling and press chute (b and c) to the front are covered on the one hand by the common, hinges ( 1 ) pivotable, a frame ( 2 a) having a shaft door ( 2 ) and on the other hand in the area of the filling chute (b) a horizontal axis ( 4 ) swiveling filler flap ( 5 ) is arranged, characterized in that the horizontal axis ( 4 ) protrudes from one end of the frame ( 2 a) of the shaft door ( 2 ) with a free stub shaft ( 4 a) and this a switch head ( 9 ) as a double-acting actuator with two mutually offset switching curves ( 7 and 8 ) with common curve intersection points ( 10 ) t, in the operating position with the shaft door closed ( 2 ) and with the filler flap ( 5 ) closed, a switching pin ( 11 ) of the limit switch seated on the waste press ( 12 ) rests in such a way that it opens when the shaft door ( 2 ) and / or the filler is opened flap ( 5 ) stops the machine control. 2. Safety device with limit switch according to claim 1, characterized in that the two switching curves ( 7 and 8 ) lie in two mutually perpendicular planes. 3. Safety device with limit switch according to claim 1 or 2, characterized in that the switching head ( 9 ) and the associated end switch ( 12 ) on which the hinges ( 1 ) are on the facing side of the shaft door ( 2 ).