FI80640C - Adjustable widening device for receiving and transporting containers - Google Patents

Description

The invention relates to an adjustable spreading device for receiving and transporting containers, the adjustment being effected by moving outwards or inwards relative to the support frame by sliding supports, the equilibration of which is effected by a chain guide.

In practice, spreading devices are known in which the different positions for receiving containers of different sizes are predetermined by means of a lock. Such locks, which also require electrical control elements, 15 involve considerable construction costs.

Furthermore, in the known spreading devices, the different positions for receiving containers of different sizes are maintained by a pressure system and the position is achieved and monitored by an electric limit switch. The disadvantage is that, due to the necessary tolerances required in the manufacture and the switching tolerances of the limit switch, the different positions can only be achieved with limited accuracy. The adjustment work required here is often very time consuming, because the sliding bracket in motion must be switched off at just the right time in order to take into account also the distance the bracket travels before it stops. This distance can often be different depending on the different coefficient of friction between the support surface and the sliding support. 30

The object of the above invention is to provide an application device which is more economical compared to known application devices.

In order to solve this problem, it is shown that in order to control the outward and inward displacement of the sliding carrier for different container sizes, a centrally located cylinder in the support frame with two separately controllable 2,80640 pistons, the other ends of which engage the sliding supports, is provided.

In this case, it is possible to achieve precise positions at low cost 5 for receiving the most common container sizes 20 ', 30' and 40 '.

In order to also be able to receive the less used container size 35 'later, if necessary, in the extension of the invention 10 the other piston-side end of the centered cylinder is provided with a stop, and cylinder / piston units are provided on both sides wherein the surfaces of action of the pistons 15 are larger than the area of action of one piston of the centrally arranged cylinder, and wherein the pistons are relievable of pressure separately from the center of the cylinder.

In order to prevent external impacts and to prevent impacts from entering other components, in another embodiment of the invention, the other end of the piston of the centrally arranged cylinder is spring-loaded.

The invention will be illustrated in more detail below with reference to the accompanying drawings.

Figure 1 shows a top view of the application device at position 20 ',

Fig. 2 shows a top view of the applicator at position 30 ', Fig. 3 shows a top view of the applicator at position 35',

Figure 4 shows a top view of the application device at position 40 ',

Figure 5 shows the end of a spring-loaded piston.

Numeral 1 denotes a support frame in which two sliding brackets 2, 3 are arranged. On each longitudinal side of the applicator there is a chain guide 4. A hydraulic cylinder 5 is mounted in the middle of the applicator, the pressure space of which is divided by a partition wall. move separately outward under pressure loading the cylinder. One end of the piston 7 is in the cylinder 5 and the other end is suspended in a support frame 1. The suspension is provided by a prestressed disc spring 9 (see Fig. 5).

5 One end of the piston 8 is located in the cylinder 5 and the other end is fixedly connected to the slide support 2. The cylinder 5 is arranged in two bearing points 10, 11 in order to shorten the buckling length. These bearing points are formed so that the cylinder 5 can be moved horizontally.

Two cylinders 14, 15 are fixedly fixed to the holders 12, 13 on both sides of the cylinder, the two pistons 16, 17 of which are connected to each other by a cross beam 18. The cross beam 18 is fixed to the cylinder 5 by a clearance. At the other end of the cylinder 5 there is an annular stop 15 19.

Figure 1 shows the application device in the position in which it receives the 20 'container. Pistons 7 and 8 are completely inside. As the piston 8 moves outwards, the slide support 2 moves. The chain guides 4 arranged on both sides of the 20 min move the sliding carrier 3 in the same way and the same distance outwards until the piston 8 has moved completely to the stop. The stroke of the piston is mounted so that the position 30 'for receiving the container is now accurately reached, as shown in Fig. 2 25. The prevailing constant pressure of the hydraulic medium ensures that the current position of the piston 8 is maintained.

If the hydraulic medium now loads the piston 7, the piston 7 will not move outwards, but the cylinder 5 will slide with the bearings-30 at points 10 and 11, and further until the stop 19 collides with the cross member 18. This collision stops the movement of the cylinder 5 and thus slides. and 3 movements and thus exactly the position required to receive the containers 35 'is reached. The action surfaces of the pistons 16, 17 are arranged to be approximately twice as large as the action surface of the piston 7. It follows that the thrust of the cylinder 5 at the same pressure values 4 80640 is only about half of the thrust of both pistons 16 and 17.

If an outer position 40 'is to be reached to receive the container, both pistons 16 and 17 must be loaded with hydraulic pressure medium. The pistons 16, 17 then move inwards over the stop 19 and the cross beam 18. The exact position 40 'for receiving the container is reached when the piston 7 is completely free (see Fig. 4).

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Claims (3)

5 80640 An adjustable spreading device for receiving and transporting containers, the adjustment being effected by moving the sliding supports (2, 3) outwards or inwards relative to the support frame (1), the alignment of which is effected by a chain guide (4), characterized in that the sliding supports (2, 3) to adjust the inlet and outlet for the different container sizes, a centrally located cylinder (5) movable in the support frame (1) is provided, with two separately controllable pistons (7, 8), the other ends of which engage the sliding brackets. Adjustable application device according to Claim 1, characterized in that the other piston-side end of the centrally mounted cylinder (5) 15 is provided with a stop (19) and cylinder / piston units (14, 16; 15, 17) are arranged on both sides of the cylinder. the pistons (16, 17) are connected to each other by a cross-beam (18) surrounding the centrally mounted cylinder, the piston impact surfaces being larger than the action surface of one piston of the center cylinder (5) and the pistons being relieved of pressure separately from the center cylinder. Adjustable spreading device according to Claim 1 or 2, characterized in that the other end of the piston (7) of the centrally arranged cylinder (5) is spring-loaded.