DE19860317A1 - Wire threading unit for baling press producing bound-up bales of non-metallic waste material has press ram movable in press channel, and bodkins movable through slots on side wall of ram and with recess for drawing up of tying wire - Google Patents

Abstract

A press ram(2) connected to a drive is installed and movable in a press channel(1), and bodkins(8) are movable through slots on the side wall of the ram. The bodkins each have a recess for drawing up of the tying wire(6) and are located a distance away from their free ends. A wire threading unit is located beneath the press channel for the placing of the tying wire into the recess in the bodkin. The wire threading unit has a number of wire threading fingers corresponding to the number of bodkins.

Description

The invention relates to a wire insertion device for a baler Production of tied bales.

Baling presses are in many different ways, for example through the German one Patent 27 28 203 such known. These balers already have proven. It is problematic, however, to place the wire at a distance from the place the lower end of the lace securely. Often it happens that the lacing wires are not sufficiently tensioned, so that by moving the laces down the wire is pushed to the side but no longer has sufficient voltage to drive past the Recess on the lacing wire to jump into the recess of the lacing needle. In In practice, various complicated devices have already been proposed to insert the wire into the recess of the lacing needle. This is expensive designed wire insertion devices are very complicated and prone to failure.

The invention has for its object a simple and safe the Wire insertion device inserting wire into the recess of the lacing needles create.

This object is solved by the features of claim 1. As special It has been found to be advantageous that the wire insertion device is one of the number the lacing needles have a corresponding number of wire insertion fingers. Here is advantageous if the wire insertion fingers are laterally at a small distance the lacing needle are arranged.  

In a preferred embodiment, tests have shown that the Wire insertion fingers rest on the lacing wire and in the direction of the lacing needles are arranged to be resiliently loaded by means of a spring device.

It has been found to be particularly advantageous that the wire insertion fingers are on a displaceably arranged push rod are arranged and that on the Push rod attacks the spring device.

Further details of the invention are the example description and the Take the drawing. Show here

Fig. 1 a horizontal channel baling press in longitudinal section;

Fig. 2 shows the arrangement of the bodkins in the lowered position before inserting of the wire in the view II-II and in enlarged scale,

Fig. 3 shows the arrangement of the lacing needles in the lowest position after inserting the wire in the view II-II and on an enlarged scale and

Fig. 4 shows the press in view II-II with the plunger retracted relative to the lacing comb, with the plunger being shown in detail in the lower illustration on an enlarged scale.

The press ram 2 , which is moved by a cylinder drive 3 , is slidably mounted in a press channel 1 with a rectangular cross section. In the illustration according to FIG. 1, the press ram 2 is in pre-retracted position in the pressing direction. When the press ram 2 is retracted, material to be pressed can be introduced into bales through a filling shaft 4 opening into the press channel 1 at the top. To produce each bale, several pushes of the press ram 2 are required. In the press channel 1, there are shown in Fig. 1 already several compacted bale 5 of which are already pressed already umschnürt with wire, while the right is about to be umschnürt.

For loops, several loops of laced wire 6 are required for each bale, which loops are drawn off from a number of wire supply rolls 7 corresponding to the number of loops. According to FIG. 1, a lacing needle 8 has just pulled a wire loop behind the bale 5 to be tied up from the lower side of the press channel 1 through the press channel 1 . The press die 2 is provided with a lacing comb 9 , which consists of a plurality of plates 10 arranged parallel to one another, which are fastened at a distance from one another on the connecting carrier 11 , which passes through the press die 2 perpendicular to the pressing direction.

The plates 10 are guided in the front in recesses 12 of the end wall of the press die 2 which contains the pressing surface. The shape and size of the recesses correspond to the cross section of the plates, so that in the retracted state of the lacing comb 9 the end faces of the plate parts form the then press-free surface. Within the press ram 2 , the plates are connected to each other with a spacer and at the same time kept at the desired distance from one another. The connecting carrier is guided in mutually opposite walls of the press ram 2 arranged connecting slots that allow displacement of the lace 9 by the dimension a in the pressing direction z, by which the lace 9 can be extended from the pressing surface 13 by retracting the ram 2 . The locking hooks 14 of the locking device 15 can be inserted in the press end position of the press die 2 through an opening in the side walls of the press channel 1 behind the connecting carrier, in order to lock the lacing comb 9 .

By pulling the press ram 2 after locking the lace 9 by locking in the press end position, the press ram 2 is retracted by the dimension a. Here, the lacing comb 9 remains at rest, so that it presses in place of the press die 2 against the rear surface of the bale 5 in the pressing direction, thereby preventing it from expanding and at the same time creating vertical and parallel lacing grooves 16 for passing the lacing needles 8 .

Now the lacing needles 8 are lowered in order to pull up 6 lacing loops from the lacing wire in a known manner. The bodkins 8 are at a distance from its lower end 18 of each recess 19, into which the Schnürdraht 6 is inserted or when passing the recess on the Schnürdraht 6 threaded. The lacing needles 8 press the lacing wire 6 to the side with their lower bevel 20 and when the lacing needles 8 are further lowered, the lacing wire 6 pushed to the side jumps into the recess, supported by the wire insertion fingers 21 of the spring-loaded wire insertion device 22 , as will be explained further below 19 of the lacing needles 8 . Now the lacing needles 8 can be pulled up again to create the lacing loops. The lacing wires 6 are then severed, after which the wire end is twisted with the wire end standing up on the front end of the bale. This concludes the lacing process. The locking hooks 14 of the locking device 15 are then withdrawn. By means of the return device 22 arranged between the press die 2 and the lace comb 9 , the plates 10 of the lace comb are moved back into the retracted position, so that there is again a flat press surface 13 on the front side of the press die 2 . This retraction of the lacing comb 9 advantageously takes place during the return process of the press ram 2 into its starting position. When the press ram 2 has returned to its end position, new material for the next bale can be filled from the filling shaft 4 into the press box or falls into the press channel 2 .

The wire insertion device 22 has the push rod 24 which is displaceable transversely to the pressing direction of the pressing piston 2 on the frame. The wire insertion fingers 21 are fastened to the push rod 24 at the same distance as the lacing needles 8 . A wire insertion finger 21 is assigned to each lacing needle 8 . The wire insertion fingers 21 are arranged at a small distance to the side of the lacing needles 8 and on the side of the lacing wire 6 opposite the recess 19 of the lacing needle 8 .

At least one spring device 26 designed as a compression spring is arranged between the push rod 24 and the frame 25 . By means of this spring device 26 , the wire insertion fingers 21 are pressed against the lacing wire 6 in the direction of the lacing needles 8 against the lacing wire 6 .

When the lacing needles 8 are moved downwards, the wire insertion fingers 21 are pressed aside via the lacing wire 6 against the force of the spring device 26 via the bevel 20 of the lacing needles 8 . When the recess 19 is at the level of the lacing wire 6 , the lacing wire 6 , supported by the spring-loaded wire insertion fingers 21 , lies securely in the respective recess 19 of the lacing needles 8 . Thus, the lacing wires are always pulled up safely by the lacing needles 8 to form the lacing loops.

Claims (5)

1. Wire insertion device for a baler for the manufacture of tied bales from predominantly non-metallic waste material with a press channel, with movably arranged in a press channel ( 1 ), connected to a drive press ram ( 2 ) and by means of lacing grooves ( 16 ) on the end wall of the press ram (2) provided, movably arranged bodkins (8), each of which has a recess (19) for pulling up the Schnürdrahtes (6) at a distance from its free end (18), below the press channel (1), a wire loading device (22 ) for inserting the lacing wire ( 6 ) into the recess ( 19 ) within the lacing needle ( 8 ). 2. Wire insertion device according to claim 1, characterized in that the wire insertion device ( 19 ) has a number of wire insertion fingers ( 21 ) corresponding to the number of lacing needles ( 8 ). 3. Wire insertion device according to one or more of the preceding claims, characterized in that the wire insertion fingers ( 21 ) are arranged at a small distance to the side of the lacing needles ( 8 ). 4. Wire insertion device according to one of the preceding claims, characterized in that the wire insertion fingers ( 21 ) bear against the lacing wire ( 6 ) and are arranged in a spring-loaded manner in the direction of the lacing needle ( 8 ) by means of a spring device ( 26 ). 5. Wire insertion device according to one or more of the preceding claims, characterized in that the wire insertion fingers ( 21 ) are arranged on a displaceably arranged push rod ( 22 ) that the spring device ( 26 ) engages on the push rod ( 22 ).