DE102011015297A1 - Device for tube packaging of solid product, has holding element whose boundary edges are arranged on angled terminal edges, so that linear guide portions of holding element are moved to base plate region - Google Patents

Abstract

The device has a base plate (4) that is vertically arranged on a retaining plate (6). The linear guide portions of adjustable holding elements (8-11) are located on the middle region of base plate. The terminal edges of holding element are arranged on the side of base plate region at preset angle with respect to the linear guide portions. The boundary edges of holding element are arranged on the angled terminal edges, so that the linear guide portions of holding element are moved to the base plate region.

Description

The invention relates to a device for packaging goods, such as chunky goods, in hose packages via a arranged in a machine frame filling tube, which has for supplying a hose in the form of films or nets on means for providing from the hose supply and downstream of the filling tube Closing a zusammenraffbaren hose section with a welding device to form a bottom closure of the following the Füllrohrausgang cross-hose section and separating the finished filled hose package between the welded closure area, with a controllable Raff-, welding and separation unit are arranged adjustable on a base element via holding elements.

Devices of this type are known in various designs to gather a supplied hose together, to weld and sever. For this purpose, according to a known arrangement DE 197 25 377 A directed. It is known that an arrangement is formed by a gathering and closing unit, which consists of two horizontally arranged on two parallel linear guides Raffeinheiten. A gathering unit includes an anvil and a separation unit which is pneumatically actuatable with a double-acting cylinder. Another gathering unit includes a welding tool with a sonotrode, a transformation piece and a transducer, which converts an electrical ultrasonic power from the generator into a linear mechanical vibration. Each of these gathering units is driven by a double-acting pneumatic cylinder, so that both units move towards each other and maintain a smaller distance between the sonotrode and the anvil at the end position. During closing, the supplied hose, which is widened by filled products, is gathered by gathering elements. Shortly before reaching a closed end position, the welding tool is switched on so that the sonotrode vibrates on the hose, softens it and presses it down until the cylinders have reached their end position.

The shortcoming here is that the shirring process can only be carried out from two sides via individual drives to be coordinated, and thus can not be optimally adjusted.

The object of the invention is to set a simple control of a plurality of holding elements via a linear drive with a positive coupling in a shirring position for closing and separating and to control the functional sequences with little effort.

The solution of this object is achieved according to the invention in that the base plate has a cutout for carrying a filled tube section and the center of the cutout at least three adjustable holding elements for shirring, welding and separating the tube section and the holding elements are arranged on linear guides on the base plate together adjustable, which is adjustable via a linear drive of a support member in the direction of its linear guide and the shirring elements forming the end edges of the holding elements formed on the side facing the cut at an angle to the linear guide and each associated corresponding boundary edge of the adjacent holding element on the angled end edge for displacement in the linear guide to Change of the cutout is arranged.

As a result, a simplification of the coordinated adjustment of the holding elements with an advantageous Raffbewegung of several pages with a drive can be performed.

An advantageous arrangement consists in that four holding elements are arranged via linear guides arranged as a quadrangle.

Furthermore, it is proposed that a welded closure of the hose section has two spaced-apart welding regions and the separating unit is assigned in the intermediate region formed.

It is also proposed that the linear drive is formed by a double-acting drive, such as a pneumatic cylinder, an electric motor with toothed belt or threaded spindle or a linear motor.

For easy control it is provided that the base plate is arranged via a vertically associated holding plate which carries the linear drive and the driven holding element is connected via a drive arm through a longitudinal slot of the holding plate with the linear drive.

Furthermore, it is provided that in each case the corresponding boundary edge of the holding element for displacement has a plastic rail.

In the drawing, an embodiment of the device is shown schematically. Show it:

1 a perspective view of a device;

2 a principle assignment of four adjustable holding elements;

3 a plan view of an arrangement according to 1 in the open position and in the closed position in dashed lines and

4 a front view of an overall arrangement with replaceable filling tubes

The arrangement shown is in a packaging machine 1 integrated, the two parallel filling tubes 2 . 3 comprises, wherein on the outside thereof in each case one in the longitudinal direction of the filling tubes 2 . 3 a not shown hose supply is mounted and its lower end a little further on the lower end of the filling tubes 2 . 3 survives. The filling pipes 2 . 3 are adjustable on a carriage for adjustment in each case a filling position for loading in association with the packaging position.

The arrangement is made by a base plate 4 with a clipping 5 formed by a holding plate 6 through vertical guides 7 slidably mounted and about a drive by means of a crank drive with a connecting rod is approximately sinusoidally adjustable.

Corresponding retaining elements 8th . 9 . 10 . 11 This arrangement are each with the cut 5 facing end edges 18 for the formation of shirring elements at an angle to a linear guide of the holding elements 8th . 9 . 10 . 11 over rails 12 . 13 . 14 and 15 the base plate 4 arranged, with the angled end edges 18 each at an associated corresponding boundary edge 19 of the adjacent holding element 8th . 9 . 10 or 11 issue.

By adjusting the retaining element 8th thus also shift the other holding elements 9 . 10 . 11 and it is thus feasible over only one drive, the shirring process from four sides and a closing and separating.

To carry out this handling, it is provided that the retaining element 10 a welding tool 20 , consisting of sonotrode, transformation piece and transducer, picks up. An end edge 18 of the holding element 10 forms together with the front side of the sonotrode a surface. The welding tool 20 is fixed over a receptacle and with an arm with the holding element 10 connected. The front side of the sonotrode can be rotated by any angle greater than 90 ° against the linear guide.

Furthermore, on the parallel opposite linear guide with its holding element 8th an anvil for the sonotrode of the welding tool 20 educated. On a short side a slider is incorporated, which the direct metallic contact of the holding elements 8th and 11 prevented each other. The falling out of the slider is prevented in that the slider is slotted in the middle and is prevented by a Rafferblech, which is clamped in an auxiliary jaw, the vertical slipping out.

Both end edges of the holding elements 9 . 11 are slotted so that on the one hand the Rafferblech of the holding element 11 on the other hand, a knife holder in such a way with the hook blade from the holding element 9 with a knife in these slots has space.

The further holding element 11 is slotted at the two longitudinal sides in the middle, on the one hand to receive a sliding guide, on the other hand, a Rafferblech. In addition, at the top and bottom of the retaining elements 9 . 11 additional grate plates attached to optimize the gathering of the hose. These are adjustable to adjust them to the respective conditions. The holding element 9 for the knife has a similar shape as the holding element 11 and also has a receptacle for a pneumatic cylinder 21 , Also this holding element 9 is slotted at the two longitudinal sides in the middle, on the one hand to receive a sliding guide, on the other hand, a knife holder with knife blade. The knife blade is a standard hook blade and is screwed to the knife holder.

This results in a basic hole "open" for the basic position 22 in the middle of the holding elements 8th . 9 . 10 . 11 , which is centered over the cutout of the base plate 4 lies. The holding element 8th is driven linearly. Either by a double-acting pneumatic cylinder, an electric motor with toothed belt as a linear drive, a threaded spindle with electric motor or by a linear motor.

Will this holding element 8th procedure, so the square hole decreases 22 in the middle linearly with the stroke of the holding element 8th as the other retaining elements 9 . 10 . 11 be moved over the touching end sides with, until finally the sonotrode of the welding device 20 and anvil touch. Due to the connected servo drive, this is prevented by a planned end position in order to set a small distance between the sonotrode and the anvil.

Here, apart from a continuous welding area divided welding areas can be formed, between which a separation process is feasible.

When the arrangement is closed, a double-acting pneumatic cylinder is activated Cutting knife actuated. The hook blade is pulled through the gathered tubing and cuts through it. Subsequently, the blade moves back into the slot of the holding elements 8th and 9 ,

The entire arrangement is involved in the movement process of the base plate 4 , Even before the downward movement of the closed holding elements of the shirring and closing device 8th . 9 . 10 . 11 becomes the downpipe 2 fed from the supercharging device material passing through the downpipe 2 or 3 down into the tube where it falls in the section above the base plate 4 collected bundled strand is caught. The supply of material is controlled to reach the closed lower end of the hose during or just prior to the beginning of the downward movement, but only after the shirring and closing means are in the closed end position. The material is then moved down together with the hose until the shirring and closing device opens and thus the movement of the hose ends. During the subsequent movement then the base plate 4 moved back up, with the shirring and closing device in the open end position on the material in the tube pass. Shortly before reaching the upper area, ie above the material, are reactivated, and the process described is repeated.

It is important here that the welding process can be controlled via a control system by a torque request or by detecting an applied welding energy, so that adaptation to different materials for the hose material can be carried out automatically.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 19725377 A [0002]

Claims (6)

Apparatus for packaging goods, such as lumpy goods, in hose packages via a filling tube arranged in a machine frame, which has means for supplying a hose in the form of films or nets via means for providing from the hose supply and a closure device of a zusammenraffbaren hose section downstream of the filling tube Welding device with the formation of a bottom closure of the subsequent tube section crossing the filling tube outlet and separating the finished filled tube package between the welded closure region, wherein a controllable gathering, welding and separating unit are adjustably arranged on a base element via holding elements, characterized in that the base plate ( 4 ) a section ( 5 ) for carrying a filled tube section and to the center of the cutout at least three adjustable holding elements ( 8th . 9 . 10 . 11 ) for shirring, welding and separating the hose section and the holding elements ( 8th . 9 . 10 . 11 ) via arranged linear guides ( 12 . 13 . 14 . 15 ) on the base plate ( 4 ) are mutually adjustable, wherein via a linear drive of a support member ( 8th ) is adjustable in the direction of its linear guide and the shirring elements forming end edges ( 18 ) of the retaining elements ( 8th . 9 . 10 . 11 ) at the neckline ( 5 ) facing side at an angle to the linear guide ( 12 . 13 . 14 . 15 ) and in each case an associated corresponding boundary edge ( 19 ) of the adjacent holding element ( 8th . 9 . 10 . 11 ) over the angled end edge ( 18 ) for displacement in the linear guide ( 12 . 13 . 14 . 15 ) for changing the section ( 5 ) is arranged. Device according to claim 1, characterized in that four retaining elements ( 8th . 9 . 10 . 11 ) arranged as a quadrilateral linear guides ( 12 . 13 . 14 . 15 ) are arranged. Apparatus according to claim 1 or 2, characterized in that a welded closure of the hose section has two spaced welding areas and in the intermediate area formed is assigned the separation unit. Device according to one of claims 1 to 3, characterized in that the linear drive by a double-acting actuator, such as a pneumatic cylinder, an electric motor with toothed belt or threaded spindle or a linear motor is formed. Device according to one of claims 1 to 4, characterized in that the base plate ( 4 ) is arranged via a vertically associated holding plate which carries the linear drive and the driven holding element ( 8th ) is connected via a drive arm through a longitudinal slot of the holding plate with the linear drive. Device according to one of claims 1 to 5, characterized in that in each case the corresponding boundary edge ( 19 ) of the retaining element ( 8th . 9 . 10 . 11 ) has a plastic rail for displacement.

Images