EP0026255B1 - Device for setting a layer or a partial layer of green moulded bricks - Google Patents

Abstract

In a setting machine for spacing formed articles a conveyor belt provides closely spaced green bricks in longitudinal rows. The longitudinal rows are transferred to a setting support collecting the green bricks as a compact setting or a partial setting of several parallel longitudinal rows or of one longitudinal row. The setting support comprises spaced rollers and carrying strips between the rollers and capable of moving in the direction of the roller axes. Each carrying strip is subdivided into spaced apart sections which are linked to lift cylinders moving them up and down independently. The lift cylinders are mounted on a carriage movable in the direction of the roller axes and which carries along the sections. The sections can lift up the green bricks from the rollers, the carriage can then move and after sufficient distance is reached the green bricks are lowered onto the rollers. The thus provided setting can be removed onto a conveyor or can be lifted by grippers.

Description

The invention relates to a device for forming a setting layer or partial setting layer from brick moldings, with a closely spaced brick moldings leading in longitudinal rows, from which the longitudinal rows are conveyed to a stationary setting pad, which consists of spaced rollers and support strips arranged between the rollers, which are movable in the direction of the longitudinal axes of the rollers and a delivery path arranged after the setting pad.

In a known device (DE-PS 23 12 946), the brick moldings brought together in a setting position formed by longitudinal and transverse rows are lifted off the rollers by support strips and conveyed in the direction of the longitudinal axes of the rollers until the foremost transverse row encounters resistance , by means of which the rearmost raised transverse row is pushed back from the support strips onto the setting mat.

The remaining raised transverse rows are moved with the lifting of the resistance until a desired transverse row distance from the supporting strips is reached, so that a further transverse row is pushed off the supporting strips on the setting pad again due to the renewed effect of the resistance set accordingly, after which manner of settling Pushing back all transverse rows from the support strips on the setting pad results in the setting position with the predetermined distances between the individual transverse rows.

The support strips cover a distance that corresponds to the entire setting position.

A disadvantage of this known device is that the brick moldings pass from a higher level (support strips) in a tilting manner to a lower level (rollers) during the formation of the settling layer. This tipping causes an inaccurate transfer of the moldings, since the moldings are warped due to a greater or lesser adhesion to the higher level, so that the distances between the individual transverse rows become inaccurate. This occurs particularly when setting layers are created from moldings with a small cutting thickness. It can happen that molded articles fall out of the gripper during transport because they are not sufficiently gripped by the grippers.

In the known device, the plane receiving the moldings and lying higher during the formation of the settlement layer (support strips) must cover a distance which corresponds to the entire settlement position. Only then can the support strip level be lowered below the roller level and returned to the starting position in order to start the formation of a new setting position. However, this sequence of movements is very time-consuming and accordingly has a negative impact on performance.

The invention seeks to remedy this. The invention, as characterized in the claims, solves the problem of improving a device of the type mentioned in such a way that tipping of the brick moldings is avoided and that acceleration is achieved when the brick moldings are separated.

The brick moldings are placed vertically on the rollers without any tilting movement of the sections during the formation of the settling layer, so that the distances to be drawn between the brick moldings are exactly observed.

The device according to the invention is further characterized by a high performance, since the sections of the support strips are moved during the formation of the settling layer only such a distance which corresponds to the sum of the distances to be drawn between the brick moldings. The support strips are moved back to the starting position as soon as all sections have been lowered below the roller level.

The shorter travel path of the support strips during the formation of the subsidence results in a shorter overall length, which has a positive effect on the investment costs.

With the device according to the invention, all brick formats can be pulled apart, since the length of the sections is aligned with the lowest molding thickness. At the lowest molding thickness, one section supports a brick molding, while larger brick molding is supported by several sections. The holding beams prevent the bricks from tipping over.

• Figur 1 eine Seitenansicht der Einrichtung,
• Figur 2 eine Ansicht nach der Linie 11-11 in Fig. 1,
• Figur 3 eine weitere Ansicht, ähnlich wie Fig. 2, jedoch in einer anderen Betriebsstellung,
• Figur 4 eine weitere Ansicht, ähnlich wie Fig.3 wobei das Auseinanderziehen von größeren Formlingen dargestellt ist.

The invention is explained in more detail below with the aid of drawings which illustrate only one embodiment. It shows

• FIG. 1 shows a side view of the device,
• FIG. 2 shows a view along the line 11-11 in FIG. 1,
• 3 shows a further view, similar to FIG. 2, but in a different operating position,
• Figure 4 is a further view, similar to Figure 3, wherein the pulling apart of larger moldings is shown.

By means of a conveyor track 1, brick bricks 3 lying close to one another are conveyed in longitudinal rows 2 onto a setting base 4, which can be designed such that it can accommodate a setting position or a partial setting position. The setting position can, for example, consist of four longitudinal rows 2, while the partial setting position can consist, for example, of only one longitudinal row 2. After the required distances have been drawn between the transverse rows 5, the setting position is conveyed onto a delivery path and lifted off a setting gripper 7. The partial setting position is also after pulling the required distances between the moldings on the delivery track 6 be promotes where a setting position is created by assembling several partial setting positions, which is then lifted from the supply path by the setting gripper7.

The setting pad 4 consists of rollers 8 spaced apart and of support strips 9 arranged between the rollers 8. Each support strip 9 is divided into sections 10 which are spaced apart. Each section 10 is connected to a lifting cylinder 11 which moves the section 10 up and down.

If a plurality of support strips 9 are arranged next to one another for receiving a set position, the sections 10 which enclose a transverse row 5 are connected to one another by a linkage 12. Two lifting cylinders 11 attached to the linkage 12 move the linkage 12 and thus the sections 10 up and down.

The lifting cylinders 11 are attached to a carriage which is movable in the direction of the longitudinal axes of the rollers 8 and which carries the sections 10 with them. When treating large moldings 3a, the sections 10 projecting horizontal holding beams 14 are arranged above the support strips 9 and are intended to prevent the moldings 3a from tipping over.

As soon as a setting position or partial setting position is to be created on the setting base 4, all the sections 10 are moved upwards by the lifting cylinders 11, reaching under the moldings 3 and lifting them off the rollers 8.

By actuating the lifting cylinder 1 ₁ downward, the blanks 3 located in the transverse row 5a are deposited back onto the rollers 8 and the transverse row 5a bearing sections 10 ride in the inoperative position below the level of the rollers 8. Thereafter, 13, the carriage in the direction of arrow A moves, whereby a distance is drawn between the transverse row 5a located on the rollers 8 and the transverse row 5b still in the raised state. When the desired distance has been reached, the lifting cylinders 11 and thus also the sections 10 carrying the transverse row 5b move downward and place the transverse row 5b on the rollers 8. The carriage 13 now moves further in the direction of the arrow A and pulls the gap desired between the transverse row 5b and the transverse row 5c. If this gap is reached, the lifting cylinders 11c lower and the transverse row 5c is placed on the rollers 8. In the manner described, the desired distances or gaps are drawn between all transverse rows 5, the relevant lifting cylinders 11 or relevant sections 10 being actuated each time.

It is also possible that several lifting cylinders 11 assigned to a support bar 9 can be actuated at the same time, e.g. the transverse rows 5a and 5b are to be placed on the rollers 8 without spacing. (Fig.3). The lift cylinders 11a and 11b are then operated simultaneously. Depending on the program of the individual setting positions or partial setting positions, the lifting cylinders 11 can be actuated. The carriage 13 can be moved continuously in the direction of arrow A during the setting of the setting position, but it can also be stopped briefly during the setting process of the transverse rows 5.

The length of the individual sections 10 of the support strips 9 are adapted to the width of the smallest brick format, so that only one section 10 is covered by a brick molding 3 in width. If wider brick moldings 3a are treated, several sections 10 underlie the moldings 3a. The lifting cylinders 11 are then actuated depending on the number of the sections 10 which enclose the molding 3a. The horizontal holding beams 14 projecting beyond the sections 10 prevent the molded articles 3a from tipping over if only one section 10 supports the molded articles 3a (FIG. 4).

Claims (3)

1. Apparatus for producing a setting course or a partial setting course from « green bricks, comprising a conveyer, bringing together green bricks arranged adjacent one another in longitudinal rows, by which the longitudinal rows are conveyed to a fixed setting station which consists of rollers arranged spaced from one another and supporting ledges arranged between the rollers and movable in the direction of the longitudinal axes of the rollers, and a belt on which the green bricks are made available,
characterised in that,

each supporting ledge (9) is divided into individual sections (10), that

the sections (10) are arranged spaced from one another that

the sections (10) are in communication with lifting cylinders (11) which move the sections (10) up and down independently of one another, that the lifting cylinders (11) are fixed to a carriage (13) movable in the direction of the longitudinal axes of the rollers.

2. Apparatus according to claim 1, characterised in that, the adjacent sections (10) of the supporting ledges (9) are interconnected by a linkage (12) and that the linkages (12) are movable up and down by lifting cylinders (11).

3. Apparatus according to claim 1, characterised in that, horizontal retaining beams (14) are arranged in the region above the sections (10).

Images