DD211324A1 - STOP FOR FIXED TRANSPORT USERS - Google Patents

Abstract

The invention relates to a stop with damping device for stopping and positioning of solid transport goods and machine parts on roller conveyors, sliding or Fuehrungsschienen. Here it is possible to approach the stop position at high speeds through heavy Transportgueter or machine parts, without causing damage. In this case, a stop lever is mounted in a guided vertically to the transport plane sliding piece and against a fixed stop against the transport direction vorschwenkt. The cargo or machine part is slowed down when approaching the stop lever by means of an exhaust side throttled and subject to atmospheric air pressure pneumatic cylinder on the movement distance to the fixed stop.

Description

Stop for fixed goods

Field of application of the invention

s

The invention relates to a stop for stopping fixed goods and machine parts on roller conveyors * sliding or guide rails in predetermined positions.

Characteristic of the known technical solutions

It is known that fixed transport goods and machine parts, which moves on roller conveyors, sliding or guide rails and are stopped by means of fixed or resilient stops. Fixed stops guarantee a precise position

C>. [OU 1Π5 0 ... i'i Ii .V. r

positioning. In order to avoid damage, however, it is necessary to select the trawling speeds depending on the nature and mass of the transported goods. "Spring-loaded stops are equipped with pressure, tension or leaf springs as well as with pneumatically actuated cylinders or hydraulic springs."

It is also known that fixed transport goods and machine components come to a standstill on driven roller conveyors by switching off the drive. In particular, if a break more points are required on a transport path, thereby separating the drive in several sections is necessary and Transport goods should come to a standstill at a precisely positioned position, especially at higher transport speeds, high technical and economic expenses required. These attacks are suitable to absorb the force of the cargo or machine part at higher transport speeds and thus to avoid damage. In this case, however, the exact positioning is often not achieved because the mass to be intercepted, their transport speed, friction on the roller conveyor, slide or guide rail and friction by side guides are only approximate enough to match the spring travel and the spring force of the sprung stop

If exact positioning is required, additional technical expenses are necessary to avoid interference *

Explanation of the essence of the invention

- The technical problem which is solved by the invention

The object of the invention is by means of a stop heavy goods or machine parts,

- 3

which are transported by means of roller conveyors, sliding or Flthrungsschiene.n and have high speeds, without damaging damage at the same time unconditionally reaching a precisely positioned position even with low propulsive forces stop damping and. thereby to eliminate the disadvantages of the previously known solutions

Features of the invention

According to the invention the technical object is achieved in that a stop lever, which projects beyond the transport plane and is mounted in a direction perpendicular to the transport direction Schiebestiick, in the starting position has a distance to a Pestanschlag · The Schiebestiick is thereby moved by a working cylinder · The stop lever is articulated with a pneumatic cylinder, which is arranged below and parallel to the transport plane with the piston rod side in the transport direction · The pneumatic connection on the piston rod side of the pneumatic cylinder is connected directly to the atmosphere via an adjustable throttle check valve and the piston bottom side connection. At the stop lever, a sliding pin is additionally attached, which rests on retracted Schiebestiick on a cam track.

When approaching the cargo or machine part of the stop lever this is taken in the transport direction, describing a circular arc around the pivot point in Schiebesttlck · At the same time the piston rod is pulled out of the pneumatic cylinder and thereby · standing in the interior of the pneumatic cylinder on the piston rod side under normal atmospheric pressure air compressed, since only a part of the air can escape during this process by means of an upstream throttle. By adjusting the throttle with the appropriate approach speed of the cargo to the stop »

 - 4 -

lever results in the pneumatic cylinder with the piston rod movement an increasing internal pressure, which opposes the Transportgutbewegung and braking acts. The braking force starts with a negligible minimum value, due to the internal friction in the cylinder. "The resulting impact" is slight due to the small stop lever and piston rod mass. "Different braking distances are also different for different masses." The regulation of the throttle is to be adapted to the heaviest of goods Lighter cargo will first stop at the pest stop prior to reaching the end position of the stop lever, but will continue to move through the throttle from the pneumatic cylinder when the pressure in the pneumatic cylinder has dropped so far. that the propulsive forces acting on the goods to be transported outweigh the effective counterforce of the pneumatic cylinder, whereby the plague stop, which is important for the exact positional malfunction, is achieved

on start-up movement uabs.i is done slowly. Wake the performance of appropriate work on the cargo by a manpower, an automatic processing station or transport routes to a set program, the further movement of the cargo takes place when the stop lever is pulled out by the sliding piece by means of the working cylinder from the transport profile of the cargo «, The stop lever runs with it a sliding pin on a cam track and is adjusted in the downward movement against the transport direction. In this case, the piston rod of the pneumatic cylinder is inserted and bypassing the throttle passes through a check valve atmospheric pressure on the piston rod side !, Jach the extension of the transported material from the working area of the stop the working cylinder is extended and the stop lever reaches its original position again "Pur certain applications also possible the working cylinder for actuating the sliding piece by a hand

to replace lever operation, if an operation is to be done directly by hand.

Another possibility of application is when workpiece carrier or machine elements perform an alternating movement between two EndStellungen and must stop in the dead spots in exactly fixed positions. The pneumatic cylinder is provided on both sides with throttle check valves, which in turn are both connected to the atmosphere. The operation of the cylinder is then via two stop lever with rod connection, which cause a mutual movement of the cylinder for cushioning.

If it is not intended to leave the range of motion between the predetermined dead-center positions, the

-jc actuation of the pneumatic cylinder via a direct linkage, actuation effective before reaching the end positions, carried by the workpiece carrier or the machine element »Here, the stop lever, the sliding piece and the actuating arm

p _n beitszylinder omitted.

embodiment

The invention will be explained in more detail below using an exemplary embodiment.

Pig. 1 is a schematic representation of the stop with damping device in the positioning position

Fig. 2 is a schematic representation of the stop

with damping device in the starting position «,

In Pig. 1 is a workpiece stop with Dämpfungseinrich-35

shown, wherein a stop lever 1 in a movable by means of a working cylinder 2 sliding piece

is articulated. In the illustrated positioning position of the stop lever 1 is applied to the Pestanschlag 4 and positioned here the cargo 5, which is moved on a driven roller conveyor 6. On stop lever 1, a pneumatic cylinder 7 is additionally articulated »which is also hinged to the driven roller conveyor 6» This pneumatic cylinder 7 is piston rod side with an adjustable throttle ™ check valve 8 is provided.

IQ arranged on the stop lever 1 sliding pin 9 runs when .Einfahren the sliding piece 3 by means of the working cylinder 2 so on the: cam track 10, that an adjustment of the stop lever 1 against the direction of travel is Tran. This position of the retracted stopper

-, - hebeis 1 is in Pig. I represented by broken lines «. After the goods to be transported 5 has left the stop area, the starting position is then reached by extending the working cylinder 2 and the next item to be transported 5 can approach. This starting position is shown in FIG.

7 -

Claims (3)

.. .. '"'. - 7-. Maturity claims 1. stop for solid goods transported on roller conveyors, sliding or guide rails and stopped in predetermined positions, characterized in that a projecting over the transport plane, in a guided perpendicular to the transport plane sliding view (3) hinged stop lever (1) a piston arranged parallel to the transport direction pneumatic cylinder (7) is articulated, the piston rod side has in the transport direction, wherein the pneumatic port on the piston rod side via an adjustable throttle check valve (8) and the piston bottom side port is directly connected to the atmosphere, .j - 2. stop according to item 1, characterized in that the stop lever (1) a sliding pin (9) is fixed, which runs when retracting the AnchanchhebeIs (1) by actuation of a working cylinder · (2) on a cam track (10). , 3. stop according to item 1 and 2, characterized in that a Pestanschlag (4) limits the end position of the stop lever (1). _or 4. stop according to item 1 and 3, characterized in that two end positions are damped by a parallel to the transport direction arranged pneumatic cylinder (7), the piston rod mutually, starting shortly before reaching the respective end position, is displaced and both PneumatikanschlUsse adjustable throttle check valves (8 .) are connected to the atmosphere. For this 2 sheets of drawings