ES2327107T3 - DEVICE FOR STACKING PESTS ON PALES, ESPECIALLY PAPER OR CARTON FOLDINGS PROVIDED IN AN IMBRICATED FORM. - Google Patents

Abstract

In order to stack sheets of paper or cardboard (11) transported by a stream feeder onto pallets (4), devices arm known which comprise a stacking platform (5) which can be raised and lowered, and on which the piles (3) are formed. During the stacking process, the longitudinal edge of a sheet (1) is guided by a separating plate (12) which is suspended on a holding element fixed in the machine frame, and is connected to a vibrator (13) in the form of a shaking element. According to the invention, in order to improve the shaking effect of the separating plate (12), a holding plate (18) is fixed, by means of rubber elements (19), to the holding element fixed in the machine frame, in such a way that it is decoupled from vibrations, the separating plate (12) and vibrator (13) being suspended from the holding plate in a rigid manner.

Description

Device for stacking sheets on pallets, especially paper or cardboard sheets provided in shape imbricated

Technical field

The invention concerns a device for stack sheets on pallets, especially sheets of paper or paper cardboard provided in an overlapping form, which includes a deposition platform that can be raised and lowered and on the which form the batteries, and at least one separation plate that guides the longitudinal edge of a sheet during stacking, which  it is suspended from a fastener attached to the machine frame and which is linked with a vibrator acting as an element beater.

State of the art

As is known, to stack sheets to continuation of a cross-cutting machine are used devices that have a deposition platform that can be raised and lowered and on which pallets intended for Receive the batteries. In the stacking area are arranged battery formation elements that guarantee a deposition of the sheets without disturbances and with songs exactly ready. These battery-forming elements are a plank of top for the front edges of the sheets and some sheets of separation that, arranged vertically and extending in the direction of advance of the sheets, guide the longitudinal edges of these sheets during stacking. Separation plates they are transversely movable on both longitudinal sides of the stacking device and, when stacking is done multi-purpose, they are also arranged between them batteries that form next to each other. These badges are subjected to vibrations by vibrators so that the battery part that forms is aligned with the edges arranged in a straight line. Stacking devices of this class are described in the DE 44 38 964 and WO 00/20315.

It is known by document DE 29 42 855-A1 a stacking equipment for a machine impression that presents some shaker mechanisms arranged in the vertical sides of the stack of paper and equipped with two linear vibrators Each vibrator is elastically suspended from a stationary part of the stacking equipment frame a through a retention plate, a rubber block and a strut of retention. Its armature tree is attached to the plate shaker

In document DE 42 21 660-C2 another stacking device with a device is described beater. In this device a butt plank is shaken consisting of two parts, of which the front part is fixed to the rear through damping elements of rubber. The shaker equipment is fixed both to the front as to the back of the stop plank.

It is known from GB 2 186 553-A sheet stacking device the cited generic class in which a vibrator is fixed to lower end of a guide plate. Some tabs that are pressed by compressed air against the guide plate They serve to shake the sheets during stacking.

Exhibition of the invention

The invention is based on the problem of improving the shaking action of the separation plates in a device of the indicated generic class.

This problem is solved by the fact that in the fastener attached to the machine frame is fixed a plate retention in decoupled form of vibrations through rubber elements that act with a damping effect, on whose plate the separating plate and a vibrator.

This construction has the advantage that the vibrator can be supported by vibrating only on the battery itself and, therefore, all vibration energy is delivered to the battery. This greatly increases the action of the vibrator.

As an additional advantage, the fact is added that vibrations from the vibrator are not transmitted to other parts of the stacking device. Thus, the remaining suspension of the Separation plate is subjected to a smaller load.

Subordinate claims contain executions of the invention that are preferred because they are especially advantageous:

According to claim 2, the sheet metal separation is detachably fixed to the retention plate. Therefore, this sheet can be changed without disassembly of the vibrator.

The execution of the bra as a plate retention that can be raised and lowered according to claim 3,  makes it possible for the separation plate to be raised together with the vibrator to an inactive position above the battery in case That this is necessary.

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In the execution especially advantageous according to the  claim 4 a retention plate is also attached eject roller and a separation shoe, bringing all the elements of formation of batteries that act on a song Longitudinal sheets can be raised and lowered with a Single common lifting drive.

Brief description of the drawing

The drawing serves to explain the invention with help of an exemplary embodiment represented in the form simplified:

Figure 1 shows in representation Schematic side elevation of a stacking device.

Figure 2 shows in enlarged representation the side elevation of the battery forming elements that they act on the longitudinal edges of the sheets.

Figure 3 shows a view of the elements battery formation in the opposite direction of advance of the specifications.

Figure 4 schematically shows the suspension of a separating plate with the vibrator correspondent.

Embodiments of the invention

The stacking device represented in The figures are used to stack sheets of paper or cardboard 1 that they are continuously supplied in an overlapping form for stacking and that have been produced in a cross-cutting machine. The sheets 1 are contributed to the stacking area by a feed conveyor 2 configured as a conveyor of tape that is arranged in a stationary vertical position to a height above the maximum stacking height above the ground. The batteries 3 are formed on pallets 4 resting on a deposition platform 5. Deposition platform 5 is suspended in the frame of the stacking device so which can be raised to the area of the conveyor plane of feeding of sheets 1 and down to the floor area.

The frame of the device consists of two uprights 6 on the input side and two uprights 7 on the side of outlet that are arranged on both longitudinal sides of the machine outside the working width and that are attached one with another at its upper ends by means of stringers 8 and crossbars The uprights 6, 7 limit the stacking area.

In the area of the conveyor plane of feeding of the sheets 1 different elements are arranged  to carry out undisturbed transport of the specifications 1 to the stacking area and to deposit these sheets on the stack 3 with the edges of them exactly placed. Be simultaneously form up to four batteries 3 arranged next to each other of other. Therefore, before the cross-section in the machine cross section, the paper or cardboard strip from the which sheets are produced 1 is further divided into bands individual by means of a corresponding number of cuts Longitudinal

The device contains, as elements of battery formation, a stop plank 9 that extend transversely across the entire width of work and in which align the front edges of the sheets. So that the position of the stop plank 9 can be adapted in the longitudinal direction of the respective length of the sheets, this plank is suspended in the rear stacking area in shape longitudinally movable.

Behind the feed conveyor 2 are  arranged transversely across the entire working width and to distance from each other several ejector rollers 10, by means of which are delivered sheets 1 to the stacking area. Immediately behind the ejection rollers 10 in the direction of advance of the sheets are arranged some shoes of separation 11 by means of which the longitudinal edges of two contiguous sheets 1. The curvature of a sheet 1 in its longitudinal edges leads to a call flag that stabilizes sheet 1 and at the same time provides  a safe separation of two adjacent sheets 1.

Behind each separation shoe 11 is arranged a separation plate 12 that extends vertically and in the direction of advance of the sheets. The plates of separation 12 have the task of guiding and laterally aligning the sheets 1 to ensure that these sheets 1 are deposited on the stack with your songs exactly arranged. Therefore, these plates  they are arranged in the stacking area between every two batteries 3 and on the two outer longitudinal edges of the batteries outer 3. The separation plates 12 are suspended in a respective fastener fixed on the machine frame and are together with a pneumatic or electromotorized vibrator 13 that acts as a shaker drive and by means of which these are shaken veneers with a frequency of some hertz. The suspension of a separation plate 12 with a vibrator 13 is represented by more detail in figures 2 and 3 and schematically in the Figure 4:

A separation plate 12, together with the ejector rollers 10 and separator shoe 11, hangs from a retaining plate 14 that serves as a fastener and is fixed to the end of two guide bars 15. The guide bars 15 are fixed at its upper end to a carriage 16 mounted so transversely movable on a crossbar. A unit of piston-cylinder 17 also attached to carriage 16 and the retention plate 14 makes it possible for the retention plate 14 together with the elements fixed to it be raised from its position working to an inactive position above battery 3. The joint suspension of the ejector roller 10, the sheet separation 12 and separation shoes 11 on the plate retention 14 has the advantage that these elements can be transversely displaced by a single drive common translation and can also be raised and lowered by a single common lift drive (unit of piston-cylinder 17).

On the retaining plate 14 a second retention plate 18 which in figure 2 is arranged ahead of the retaining plate 14 and which in figure 3 is arranged to the left of this plate. The second plate of retention 18 is attached to retention plate 14 exclusively through rubber elements 19 of damping action, so that the two retention plates 14, 18 are uncoupled one of another in regards to vibrations. As rubber elements 19 is preferably use so-called elements of metal-rubber that are rubber-elastic and act with damping effect In the second retention plate 18 are The separation plate 12 and the vibrator 13 are rigidly suspended. The decoupled fixation in vibrations of the second plate of retention 18 to the first retention plate 14 serving as bra makes vibrator 13 can't put on the first vibration retention plate 14. In this retention plate no vibrating 14 the ejection rollers 10 are fixed through a support arm 20. The separation shoe 11 is fixed to the oscillating retaining plate 18, so that said shoe is vibrating together with the separation plate 12. The Vibration of the separation shoe 11 leads to the sheets 1 they slide better down to remain on battery 3.

Claims (4)

1. Device for stacking sheets (1) on pallets (4), especially sheets (1) of paper or cardboard provided in an overlapping form, which includes - a deposition platform (5) that can be  rise and fall and on which the batteries (3) are formed, and - at least one separating plate (12) that guides  the longitudinal edge of a sheet (1) during stacking, which it is suspended from a fastener fixed on the machine frame and that is joined with a vibrator (13) acting as an element beater, characterized in that in the fastener fixed in the frame of the machine it is fixed in an uncoupled form for vibrations, through rubber elements (19) of damping action, a retention plate (18) in which the sheet is rigidly suspended of separation (12) and a vibrator (13). 2. Device according to claim 1, characterized in that the separating plate (12) is fixed to the retention plate (18) in a detachable form. Device according to claim 1 or 2, characterized in that the fastener is a retention plate (14) that is mounted on the frame of the machine so that it can be raised and lowered. Device according to claim 3, characterized in that an eject roller (10) and a separation shoe (11) are also fixed on the retention plate (14).