DE3820236A1 - INPUT DEVICE OF PACKAGES FORMED FROM PLATE STACKS AND METHOD FOR PROVIDING THE PACKAGES ON THE INPUT DEVICE - Google Patents

Abstract

An automatic feeder for delivering stacks of flat cardboard blanks to a box manufacturing machine comprises a magazine (3), a ramp (4) the forks 6 of the magazine being adapted to drive the stack (5) on the ramp (4) and additional forks (13) for continuing the movement of the stack (5) on the ramp (4) to permit the magazine (3) to return to receiving a new stack (15). <IMAGE>

Description

The invention relates to an automatic feed device in particular such a device with which starting from a stack of lying flat Plates bundles or sets are formed, for example a forming or processing machine to be fed, but also a ver drive, according to the flat stack of plates of the automatic Feeder can be provided.

Nowadays, Verpac is widely used to manufacture used sidewalls made of corrugated cardboard, that have been processed more or less.

The cardboard side walls are made of corrugated cardboard created machine that continuously dispenses a tape, which then turns into rectangular side walls or Flanks is cut, the dimensions of which the packaging box to be manufactured more or correspond less.

Cutting machines are known through the stacks flat plates lying on top after cutting of the tape can be formed. After stacking are the different side walls of others Forming or processing machines reopened which are generally in series and which process consecutive items.

The forming machines can in particular Blanks to form the flaps or other parts the packaging or to form grooves on the side walls to make that Build packaging and printing easier.  

In a large number of cases the supply of the forming machines manually from the operator made person who are stacked one on top of the other of flat plates, which are then provided by the Operator of the forming machine taken over to get from the machine then the packaging to have boxes trained.

In addition, automation is increasing self-employed in the cardboard or cardboard industry Feeders appeared through which make production faster and with fewer staff can be carried out.

It is a class of automatic task preparation known with which it is possible to turn one Stack of flat plates in small plates to form an even number in order to give this example Feed stack feeder to a metal forming machine.

In particular, is an automatic feeder from plate bundles starting from one another of flat plates known at the entrance a magazine with serving as a recording device Ramp around the stack of stacked panels and to put them on the ramp like this that they stand on their edges, and also a feed set up the stack of upright panels has to close the plates on the ramp To use.

At this level there are various facilities upright plate sets or bundles formed, by, for example, such an end stacked Disk package generally shifted vertically and a horizontal push on the protruding end of the unevenly high package is exercised, so that Package is pivoted flat.  

Here, however, are the work cycles for feeding or feed-in due to the provision as Packet stack of the flat sheets of this device limited. In fact, these systems work with regular work cycle throughout Use the stack that was previously in the magazine was given. After that the work cycle interrupted during the period during which the magazine with a new stack of stacked panels is loaded.

The aim of the invention is an automatic one Propose feeder, the particular ge is suitable for forming plate packs from one Stack of flat plates on top of each other to feed them to a forming machine, and also to create a process after the stack is flatter superimposed panels of automatic opening can be provided, whereby a enables continuous feeding of the plates and any idle or idle time in the work cycles of the loading of the machines is avoided, so that those occurring in the known devices Disadvantages are overcome.

A feature of the invention is an automatic Feeder and a method of providing of stacks of flat sheets lying on top of each other to create the feed device that enables will, during the hidden time, i.e. H. at the time while using a previously in the magazine entered plate stack, a new plate Prepare stacks so that the latter immediately at the end of the stack located there  is taken over, so no idle time more exists.

If, for example, the automatic feeder for the sake of supplying a feeder to the forming machine, can be flattened from a stack without interruption consecutive plates continuously regular Form plate packs to be fed to the feeder will.

The advantage of the invention over the known Procedure relies on the fact that time is saved come about at the manufacturing level that itself further on the manufacturing costs as well as on the Impact manufacturing cycle.

Further features and advantages of the invention result itself from the description below, however only serves for better clarity and the inven not to limit the idea of extension.

According to the invention has the automatic task device, in particular for forming plate packs from a stack of flat plates e.g. B. for loading a forming machine:

• - a magazine that is especially the recording direction and an inclined plane or ramp to the up and later parking on the ramp,
• - A feed device of the plate stack for Move the plates on the ramp to the application site towards, the device being characterized is that they have complementary holding facilities of the plates with which the stack is on the  Ramp advanced and the magazine prepared can take up a new stack of plates.

The process of making stacks flatter Plates of the automatic feeder of the invention includes:

• - Load with a stack of flat plates at the level of the magazine receiving device and parking on the ramp and
• - Move the plates to the application site using a feed device on the lower part of the stack acts, the process thereby is marked that before completely emptying all plates of the stack the remaining plates of the stack from a complementary retained Established and the plates continued to be theirs Place of application are moved,
• - That the magazine for receiving a new stack is repositioned and
• - That the magazine is loaded with the new stack of plates and then the plates located there be dropped on the ramp.

The features of the invention result from the following description of an embodiment in conjunction with the claims and drawings. Here at show:

Figs. 1a to 1c is a schematic representation of the various stages of loading with a stack of flat plates superposed on a known feed device,

Fig. 2a and 2b designed according to the invention, automatic feeder example half a conversion machine is fed in the working phases to form plate packs with those

FIGS. 3a to 3d show the various phases of the invention for re-taking the stack of plates in place in the automatic feeding device according to Fig. 2 and

FIGS. 4a to 4d show the various stages of the invention for loading a new disk pack after re-taking according to FIG. 3.

The invention is directed to an automatic Feed device and a method for ready making stacks of flat plates of the auto term feed device.

The invention finds particular application in the Cardboard processing industry. In this area are upstream of the forming machines that printing and cutting the cardboard sheets for Carry out the packaging, corrugated cardboard machines used with a feeder magazine, the Loading secured by a feeder which is the vertical stack of cardboard packages from the corrugated cardboard machine.

According to the invention, one proceeds from an example of Application from where the feeding of an investor a forming machine is provided. The invention can also be used with other types of machines use with similar criteria.  

Likewise, it straightens up in particular Cardboard sheets, however, could be used for others Materials such as layered lightweight materials Find application.

At present, various types of tasks are being performed devices known with which, starting from a stack of flat plates on top of each other, performed a separation and a package in the stack Plates can be removed to allow the forming to load machines with plates.

Such a known feed device is shown in FIGS . 1a to 1c. Here, the automatic feed device 1 generally consists of a magazine 2, which in particular have a receiving device 3 and a ramp 4, wherein said means 3 to receive the stack of plates and can settle on the ramp. 4

According to Fig. 1 3, the receiving means to a receiving platform 6 and a web panel 7, which is angel concentrated at 18 on the housing of the automatic feeding device.

According to one embodiment, the receiving platform 6 is expediently formed from forks which are separate from one another and parallel to one another and which are fastened to the table 7 .

It should be noted that the receiving platform of course also from a different kind conventional lifting device such as a lifting platform or a lifting table can exist  is obviously provided with the reservation the task of resuming or taking back the stack by complementary means described below reinstallation is provided.

In addition, to facilitate the introduction of the stack 5 on the platform 6 , this can be equipped with rollers that are net angeord on both sides of the forks.

Accordingly, as shown in FIG. 1 a, the stack of flat plates lying one on top of the other is fed to the receiving device 3 by a known transport or conveying device on the platform 6 . The stack is then placed on the ramp by pivoting the panel 7 about the joint 18 , which is illustrated with reference to FIG. 1b.

In order to allow the displacement of the stack and consequently the plates forming this stack on the ramp 4 to the place of use, the self-acting feeder 1 has a feed device 8 , which in the present case, as illustrated in FIG. 1c, essentially consists of the Platform 6 of the receiving device 3 exists.

In fact, the forks of the platform 6 are slidably inserted in one embodiment in the longitudinal direction of the table 7 and are controlled by a movement device, which is not shown in the figures. Thus, the lower part of the stack 5 is exposed to the action of the forks 6 which, when actuated, cause the stack 5 to move onto the ramp.

FIGS. 2a and 2b show a known embodiment of a feed device, with which, starting from a flat stack of superposed plates 5 packages 9 for feeding a machine like Example half of a feeder apparatus can be formed. In addition, the automatic device 1 is provided with devices which are the subject of the invention as a development.

The method for assembling the plates into packages 9, starting from a plate stack 5, has the following method steps in sequence:

• a number of upright plates of the stack 10 are brought generally vertically to an uneven height, the plates forming the package 9 , and this process is carried out, for example, by unhooking from the ramp 4 ,
• - There is a horizontal thrust, as shown, for example, the arrow 11 of Fig. 2a, on the vorste end of the unequal height package 9 , so that they are laid flat, and
• - The folded plate pack 9 thus formed is discharged to the application site according to FIG. 2b.

It should be noted with regard to FIG. 2 that the stack is shaken on an aligner 12 before the package is taken to the place of use in order to return the package to the correct shape if necessary. This aligner or vibrator 12 can be extended and retracted according to FIG. 2b in order to let the package exit before the arrival of the following package.

In the previously known devices of this type, when all the plates forming the stack 5 have run out completely, the operation of the forming machine is interrupted in order to feed the self-operating feed device again.

In fact, there is a reset of the feed device 8 in the starting position, ie in this case the forks 6 , whereupon the magazine 2 is pivoted so that it returns to its starting position for receiving, as illustrated in FIG. 1a. After this, the work cycle can begin again as described in FIGS. 1a and 2b.

The object of the invention is to overcome this disadvantage, by having any idle or idle time at the ready position of the flat plates is avoided.

In this regard, the automatic device 1 according to the invention has complementary retaining devices for the plates, by means of which the stack 5 is advanced on the ramp 4 on the one hand and the magazine 2 for receiving a new plate stack in particular on the level or height of the receiving devices on the other hand 3 of the magazine is being prepared.

According to the embodiment of the invention according to FIGS. 3 and 4, the complementary retaining devices 13 are laid out in a laying plane in order to be able to be drawn in under the ramp 4 , as shown in FIGS. 2 and 4d, or they are protruding, like that Figures 3a to 4c show to detach the feed devices 8 of the stack 5 when it leaves the magazine 2 and especially when the lower part 14 of the stack leaves the end of the table 7 of the magazine.

In this regard, in the embodiment shown, the design arrangement of the complementary retaining devices 13 has a configuration according to which these can be slidably guided between the movable forks, which likewise essentially form the feed device 8 .

According to the invention, the method for providing stacks of flat plates of the automatic feeding device 1 proceeds as follows:

• A) As already described above with reference to FIGS. 1a to 2b, first of all:
  • a) a stack 5 of flat plates lying one on top of the other at the level of the receiving device 3 of the magazine 2 and deposited on the ramp 4 , for which purpose in particular the stack 5 is pivoted on the ramp 4 in order to place these plates on their edge, and
  • b) the plates moved by feed means 8 to the application, which act on the lower part or the underside 14 of the stack 5 .
• B) After this and before the complete emptying of all the plates of the stack 5 , the procedure according to FIGS . 3a to 3d is as follows:
  • a) the plates remaining from the stack 5 are held by means of complementary retaining devices 13 and the plates continue to be moved to the place of use,
  • b) the magazine 2 is repositioned to accommodate a new stack 15 of flat plates, and
  • c) the magazine 2 is loaded with the new plate stack 15 and then the plates are placed on the ramp 4 , which are there.

With this approach, the idle time can be kept to a minimum when the end of the first existing stack is reached to continue the duty cycle. However, in order to completely switch off the idle or dead time according to the invention according to FIGS. 4b and 4c, the following additional processes must be carried out:

• - Advancing the new stack 15 to the lower part 14 of the stack 5 , on which the complementary retaining means 13 act, and
• - Pulling in the complementary retaining means 13 to act on the stack thus newly formed by means of the feed device 8 as a whole.

In the embodiments created, the receiving device 3 of the swivel magazine 2 has an assembly of movable forks which form the lower part of the platform 6 , the feed device 8 generally being formed by the fork unit 6 as a whole.

The footprint or design surface of the complementary retaining devices 13 is essentially formed by a second assembly of movable forks ge, which are designed so that they can be moved between the first fork assembly 6 slidably.

The first fork unit 6 is slidably inserted in the table 7 of the swivel magazine 2 .

The second fork unit 13 is also arranged so as to slide transversely with respect to the ramp 4 in order to allow it to emerge between the movable forks 6 of the feed device 8 . It is arranged longitudinally opposite the ramp 4 in order to allow the stack 5 to be displaced and to replace the feed device 8 .

FIGS. 3 and 4 show the sequence of the various operations that have been set forth above.

Here, Fig 3a shows the use of the second fork unit 13 displays., 6 of the feed device 8 takes the place of the forks. The exit occurs practically perpendicular to the ramp 4 , which is indicated by the arrow 16 .

The exit is controlled by conventional detectors which control the arrival of the lower part of stack 14 at the level of the upper part of panel 7 which is tilted into the plane of ramp 4 .

When the restraining means 13 have completely escaped (see in particular FIG. 3b), they take the place of the fork unit 6 of the feed device 8 in order to hold the stack 5 and to continue its feed, as illustrated by the arrows 17 .

The Fig. 3c shows when the magazine 3 is free from the rest of the plates of the stack 5, that is when the lower end 14 of the stack 5, the panel 7 deprives the re-capture of the position of the magazine 2, and in particular the pivoting of the panel 7 to the hinge axis 18 and the translation movement for lowering the platform 6 of the device 3 . These movements are schematically illustrated in Fig. 3c by the respective arrows 19 and 20 ver.

FIG. 3 d shows the magazine 2 being loaded with a new stack 15 of flat plates lying one on top of the other, a process which corresponds to the first loading described with reference to FIG. 1a.

FIG. 4a shows the formation of the new stack 15 on the Ramp 4. This process corresponds to that which has already been explained with reference to FIG. 1b, but in this case the machine continues to be fed with plates from the rest of the stack 5 .

FIG. 4b shows the first stage in the formation of one of the rest of the plates of the stack 5 with the newly formed stack en plates of the stack 15 °.

For this purpose, the new stack 15 is advanced as a whole according to arrow 21 by means of the feed device 8 , after which the upper part of the new stack 15 is found when the stack 15 is in the vicinity of the complementary retaining devices 13 . The detection or detection is carried out here using means known in the art.

When the detection takes place, the complementary devices 13 are drawn into the ramp 4 according to FIG. 4c from below. The devices 13 are also returned to their starting position by a translational movement.

At the end of the pulling-in process, as shown in FIG. 4d, with the new stack 15 , at the end of which the remaining plates of the stack 5 may be located, the automatic feed device with flat plates is provided or supplied without any idling. or dead time.

Of course, especially with regard to numerous for other uses and adaptations Modifications to the automatic feeder can be made without the invention thank you leave.

Claims (8)

1. Automatic feed device ( 1 ), from which in particular starting from a plate stack ( 5 , 15 ) plate bundles or packages ( 9 ) are formed in order to be fed to a forming machine, and the
- A magazine ( 2 ), the device in particular ( 3 ) and a ramp ( 4 ), which are suitable for receiving the plate stack to place it on the ramp ( 4 ), and
- A feed device ( 8 ) of the plate stack ( 5 ) to move the plates on the ramp ( 4 ) to the application site, characterized in that it has complementary retaining devices ( 13 ) for the plates, which enables that the feed of the stack ( 5 ) continues on the ramp ( 4 ) and the magazine ( 2 ) can be prepared to receive a new plate stack ( 15 ). 2. Automatic feed device according to claim 1, characterized in that the complementary retaining devices ( 13 ) are in the form of a laying plane, which is a pullable or practically perpendicular to the ramp ( 4 ) to extend to the place of the feed device ( 8 ) to kick the stack when it leaves the magazine ( 2 ). 3. Automatic feed device according to claim 2, in which the receiving device ( 3 ) of the magazine ( 2 ) has in particular a platform ( 6 ) which is equipped with an assembly of movable forks which can at least be inserted into the platform, the feed device ( 8 ) in union union from this fork assembly ( 6 ), characterized in that the laying plane of the complementary retaining means ( 13 ) has a configuration that it can be slidably moved between the assembly consisting of the movable forks ( 6 ) . 4. Automatic feed device according to claim 3, characterized in that the complementary retaining devices ( 13 ) occur in the form of a second assembly of movable forks. 5. Automatic feed device according to claim 4, characterized in that the second fork assembly ( 13 ) transversely to the ramp ( 4 ) to let it emerge between the movable forks ( 6 ) of the feed device ( 8 ), and longitudinally to the ramp ( 4th ) is slidably inserted in order to have the stack ( 5 , 15 ) shifted and to take the place of the feed device ( 8 ). 6. A method of providing or supplying an automatic feeder ( 1 ) according to claim 1 with a stack of flat plates, wherein
- A stack ( 5 ) of flat plates in the direction of the magazine ( 2 ) is fed and placed on the ramp ( 4 ) and
- The plates are moved to the place of use by feed means ( 8 ) which act on the lower part ( 14 ) of the stack ( 5 ), characterized in that before all the plates of the stack ( 5 ) have been completely emptied
the remaining plates of the stack ( 5 ) are held by complementary retaining devices ( 13 ) and the movement of the plates to the application site is continued,
- The magazine ( 2 ) is brought into a new position to accommodate a new stack ( 15 ) of flat plates, and
- The magazine ( 2 ) is loaded with the new plate stack ( 15 ) and then placed on the ramp ( 4 ) on the plates located here. 7. The method according to claim 6, characterized in that the new stack ( 15 ) is advanced to the lower part ( 14 ) of the stack, on which the complementary retaining devices ( 13 ) can act, and that the complementary retaining devices ( 13 ) are drawn are so that the entirety of the stack thus formed is again exposed to the action of the feed device ( 8 ). 8. The method according to claim 7, characterized in that the upper part of the new stack is located or determined when this stack ( 15 ) comes close to the complementary retaining means ( 13 ), and that the means ( 13 ) down in the ramp ( 4 ) are drawn in, so that only a single stack is formed with the plates standing on the ramp ( 4 ).