JPH0471811B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a support member that is movable up and down in a plane parallel to the rotational axis of the rotational feeding device above the rotational feeding device equipped with a suction roll. It has angle levers mounted pivotably about parallel axes, the bent lower legs of which can be lowered into the peripheral area of the bundle of bag material and can be moved outwardly from the peripheral area. The present invention relates to a device that presses a bundle of bag materials placed in a stacking magazine of a rotary feeding device, which can be swung around.

According to a pressing device of this type, which is known from DE 24 54 314 A1, the angle lever is pivotably mounted on a carriage, which runs on a special guide rail and presses against the guide roll. Via a wound rope or the like, it can be moved by means of a pressure medium piston-cylinder unit over the height of the next placed bundle. Although this known pressing device has been found to have a guaranteed performance, it is relatively complex in construction.

It is therefore an object of the invention to simplify the construction of a pressing device of the type mentioned at the beginning of this section.

According to the present invention, the support member is supported by the tip portions of at least two levers that are attached to the machine frame so as to be swingable about an axis perpendicular to the plane of movement of the support member. is swung by a pressure medium piston-cylinder unit and occupies a position substantially parallel or at an acute angle to the axis of rotation of the rotary feed device, said support member being swung by another pressure medium swiveling the angle lever. This problem is solved by providing a piston cylinder unit. According to the pressing device of the present invention, the lever that swings the support member beyond the height of the bundle to be placed next can be moved.
Since it is supported directly on the machine frame, a special carriage and its guide device are not required, and the structure is simplified. Since the lever for swiveling the support member is arranged essentially parallel to the axis of rotation of the rotary feed device, the movement of the support member in the direction of its axis of oscillation is negligibly small.

In order to pivot the levers carrying the support members, these levers are provided with bent legs, the end parts of which are connected to each other by a connecting rod, and the legs of one of the levers are connected to each other by connecting rods. The part is connected to a pressure medium piston-cylinder unit which swings this leg. A pressure medium piston cylinder unit is connected to the machine frame. According to a preferred embodiment of the present invention, the bent leg closest to the pressure medium piston cylinder unit is supported by a link block, and the link block is provided with a guide member having an elongated hole. The guide member may be pivotally connected to the piston rod of the pressure medium piston-cylinder unit, or the guide member may be formed in the form of a fork, and the pivot point of the leg relative to the guide member may be The frame-shaped housing is pivotable relative to the connecting rod. The length of the elongated hole is selected to allow a swinging of said legs with support members at least over the height of the next placed bundle. The guide member is
After the angle lever connected to the support member has been placed on the next placed bundle, it is brought into the extended position by means of the associated pressure medium piston-cylinder unit, so that the support member is loaded into the bundle of bag material. Together with the imposing angle lever, the action of gravity allows it to be lowered according to the reduced height of the bundle.

Further advantageous embodiments of the invention are described in the respective implementation sections.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described in further detail with reference to the accompanying drawings.

The pressing device is arranged between the two machine frame walls 1, which are interconnected by cross members 2. The horizontal member 2 has a plurality of abutment plates 3 spaced apart from each other, and the bundle 5 of bag materials supplied to the rotary feeding device 4 is supported by the abutment plates 3 on the rear side.

As shown in particular in FIGS. 1 and 5, two further supports 6, 7 are further connected to the cross member 2,
Two bending levers 8, 9 are rotatably supported on the supports 6, 7 at pivot points. One end of the bending lever 8 is pivotally connected to a pull rod 10, and the other end of the pull rod 10 enters through a through hole 11 into a frame-shaped housing 12 with open sides. The frame-shaped housing 12 is pivotally connected to a piston rod 13 of a piston-cylinder unit 14 via a joint. Frame-shaped housing 12
Attached to the end of the drawbar 10, which extends into the interior of the drawbar 10, is a guide member 15, which projects laterally from the frame-shaped housing 12. One end of the bending lever 9 is pivotally attached to a portion of a guide member 15 that projects laterally from the frame-shaped housing 12.
The other ends of the flexure levers 8,9 each have a pin 16 which passes through and engages the support members 17,18.
8 rotates relative to the pins 16, but is prevented from slipping out of these pins.

A shaft 19 is rotatably supported by the support members 17 and 18, and a plurality of angle levers 20 are fastened to the shaft 19 at a distance from each other. In order to rotate the shaft 19 relative to the support members 17, 18,
As shown in particular in FIGS. 3 and 4, at a distance on each side of the support member 17 there are clamping rings 21, 2.
2 are respectively tightened on the shaft 19. The tightening ring 22 has two abutment pins 23 and 24,
The abutment pins 23 and 24 alternately abut against the shaft 25 fastened to the support member 17 to limit rotation of the shaft 19. This pivoting movement is carried out by a piston-cylinder unit 26, the piston rod 27 of which acts on a lever 32 connected to the clamping ring 21, while the cylinder 28 acts on a bent extension 29 of the support member 17. It is pivoted.

A spring 30 shown in FIG. 3 surrounds the pin 16 in the open area between the support member 17 and the flexure lever 8;
The support member 17 is constantly pressed toward a tightening ring 31 fixed to one end of the pin 16.

When the angle lever 20 rises from the position shown by the L-shaped chain line in FIG. It pivots outward from the bundle 5 of bag material. Next, the piston rod 13 of the piston-cylinder unit 14 is completely retracted, and the frame-shaped housing 12 is
It occupies the position indicated by the one-dot chain line shown in FIG. At this time, the guide member 15 occupies the relative position indicated by the broken line. This position is the highest position of the angle lever 20.

After a new bag material bundle 5 has been placed, the piston rod 13 is moved together with the frame-shaped housing 12.
It is moved to another end position (solid line position) shown in FIG. At this time, the free legs of the angle levers 20 of the bending levers 8, 9 are placed on the uppermost bag material of the newly placed bundle 5 due to the weight of the shaft 19 and the parts connected thereto. oscillate counterclockwise until the The guide member 15 is of course entrained by the bending lever 9 during this movement. FIG. 5 shows the situation in which the largest possible bundle 5 has been placed and the free end of the angle lever 20 rests on the bundle. During the separation process of the bag material by the suction rolls of the rotary feeding device 4, the height of the bundle 5 decreases. The shaft 19, the support members 17, 18 and the angle lever 20 are always placed on the bundle 5 due to their own weight. During this movement, the guide member 15 moves within the frame-shaped housing 12 from its left end position to its right end position. In the right end position, the bending levers 8, 9 and the shaft 19 are in the position shown in dash-dotted lines in FIG.

The cylinder of the piston-cylinder unit 14 is connected to the horizontal member 2 by a connecting portion 33.
During its descent over the height of the bundle 5 until it abuts against a new bundle 5, the ring block formed by the guide element 15 slides into the frame-shaped housing over a length corresponding to the swiveling angle of the levers 8, 9. It can freely slide within the link portion formed by the 12 elongated holes. A new bundle 5 is placed, and the angle lever 20
When the lower leg of the frame is placed on the bundle 5 by the swinging of the levers 8, 9, the frame housing 12 is moved to the position shown in solid lines in FIG. 5, and the angle lever 20 is lowered by gravity. can do.

A control (not shown) is provided for the piston-cylinder unit 26, and when the levers 8, 9 are swung, the angle lever 20, which is supported on the tips of the levers 8, 9, is pivoted outwards and subsequently placed. Before loading the bundle 5, it is adapted to be rotated inward again.

[Brief explanation of the drawing]

Fig. 1 is a schematic front view of a pressing device for a bundle of bag materials loaded into a stacking magazine of a rotary feeding device;
The figure is a cross-sectional view taken along the - line in Figure 1, Figure 3 is a cross-sectional view taken along the - line in Figure 1, Figure 4 is a top view of the support member shown in Figure 3, and Figure 5 is a support member. FIG. Explanation of symbols, 1...Machine frame wall 1 (machine frame), 8, 9
... lever, 14, 28 ... piston cylinder unit (pressure medium piston cylinder unit), 17, 18 ... support member, 20 ... angle lever.

Claims (1)

[Claims] 1. Above a rotary feeding device equipped with a suction roll, a support member that can be raised and lowered in a plane parallel to the rotational axis of the rotary feeding device has an axis parallel to the rotational axis. It has centrally pivotably supported angle levers, the bent lower legs of which can be lowered into and pivoted outwards from the peripheral area of the bundle of bag material. , a device for pressing a bundle of bag materials placed in a stacking magazine of a rotary feeding device, the supporting members 17 and 18
is supported by the tip portions of at least two levers 8 and 9, which are attached to the machine frame 1 so as to be swingable about an axis perpendicular to the plane of movement thereof.
is swung by the pressure medium piston-cylinder unit 14 and occupies a position substantially parallel or at an acute angle to the axis of rotation of the rotary feed device;
The support members 17 and 18 are connected to the angle lever 20.
A pressing device characterized by comprising a pressure medium piston cylinder unit 28 that swings the pressure medium. 2. The shaft 19 is supported by the supporting members 17 and 18, and the shaft 1
9. The pressing device according to claim 1, wherein a plurality of angle levers 20 are mounted on the lever 9 at a distance from each other. 3. One side of the pressure medium piston cylinder unit 28 is pivotally connected to the support member 17, and the unit 2
The piston rod 27 or cylinder of 8 is connected to the shaft 1.
The pressing device according to claim 1 or 2, characterized in that the pressing device is pivotally connected to a tightening ring (22) for rotating the pressing device (9). 4 In order to limit the outward swinging position of the angle lever 20, at least one abutment pin 23, 2
4 is attached to the shaft 19, and the abutting pins 23, 2
4. The pressing device according to any one of claims 1 to 3, characterized in that numeral 4 cooperates with a shaft 25 mounted on the support member 17. 5 Levers 8 and 9 that support support members 17 and 18
In order to swing the levers 8, 9, bent legs are provided, the end portions of which are attached to the connecting rod 10.
one of the legs is connected to a pressure medium piston cylinder unit 14 for swinging the leg, and the pressure medium piston cylinder unit 14 is mounted on the machine frame 1. A pressing device according to any one of claims 1 to 4, characterized in that: 6. The leg closest to the pressure medium piston cylinder unit 14 is swingably supported on a link block or guide member 15, which guide member 15 has a frame shape with at least one elongated hole. It is longitudinally movably guided in a housing 12, which frame-shaped housing 12 is connected to a piston rod 13 of a pressure medium piston-cylinder unit 14.
or the frame-shaped housing 12
are formed in a fork shape, and the housing 12 is swingable relative to the connecting rod 10 around a pivot point of the leg with respect to the guide member 15. The pressing device according to item 5.