DE19513422A1 - Piece good accumulating track - Google Patents

Abstract

The interposed rollers (5) are carried on an oscillatingly suspended rod (6) so that the rollers are raised off the traction rope etc. (4) when the feeler (10) is triggered so as to reach the freewheel setting. Until the feeler is triggered, however, the rollers bear both on rope and idlers (2). In the freewheel setting, the last triggered roller is pressed onto a fixed brake shoe (14) and similarly onto the last idler. The rollers ride their bar (6) with radial clearance and additional idlers apart from the last can be exposed to the brake shoe effect, the shoe itself adjustable to compensate for wear, specifically using a brake rod (8) coupled to feeler and bar (6). The brake rod end joined to the feeler is loaded by a tensile spring (13) connected to structure or frame (3). The feeler consists of a layer hinged to frame or structure and fitted with a cam reaching into the path of the piece goods etc..

Description

The present invention relates to an accumulation roller conveyor for non-dynamic pressure Storage and conveyance of piece goods, including a variety of in the conveying direction arranged one behind the other, rotatably mounted in a frame or frame Idler rollers, by intermediate rollers with a continuously rotating traction device can be connected in terms of drive, the support rollers being grouped together are and the intermediate rollers of each idler roller group by an actuator with a connected by the piece goods controlled sensor and through this into a drive and are movable into a free-running position, the - in Direction of conveyance seen - last idler in a idler group is braked.

Accumulation roller conveyors of the generic type are known per se and serve the purpose Transport of general cargo in a wide variety of applications. At Due to the corresponding construction, accumulation roller conveyors become a general cargo jam automatically recognized and then, if necessary, the drive of the idlers in groups canceled.

The present invention has for its object a accumulation roller conveyor Generic type to create, which is characterized by a simple constructive Structure and high functional reliability with regard to the mechanism for the Switching on or braking the idlers of the individual idler groups distinguished.

This object is achieved in that the intermediate rollers each are mounted on a pendulum-mounted linkage that the intermediate rollers when the sensor is actuated by the traction device in the free-running position against the direction of conveyance are lifted off and on the traction mechanism as well as on the Idlers and that in the freewheel position the last intermediate roller a stationary brake pad and at the same time on the last idler is pressed.

Such a built-up roller conveyor is structurally easy to implement because of Mechanism by means of which the idlers can be driven in groups or can be switched off, consists of simple components. At the same time, a high Functional reliability of the accumulating roller conveyor is achieved in that the intermediate rollers in their drive position depending on the weight of the piece goods to be transported automatically ensure the transmission of higher torque and in freewheel mode position a good braking effect is achieved for the last idler, which may be due to the weight of the piece goods is automatically increased.

Further features of the invention are the subject of dependent claims.

In the accompanying drawings is an embodiment of the invention shown, which is described in more detail below. Show it:

Fig. 1 is a partial side view schematically shown an accumulation roller conveyor according to the invention,

Fig. 2 is a fragmentary view enlarged relative to FIG. 1 represented the accumulation roller conveyor according to the invention,

Fig. 3 is a partial plan view of the accumulating roller conveyor in the direction of arrow III in Fig. 2,

Fig. 4. A partial section along the line IV / IV in Fig 2,

Fig. 5 is a partial section along line V / V in Fig. 2.

In Fig. 1 is a partial side elevation view is shown of an accumulation roller conveyor in total designated with the reference numeral 1, wherein a plurality are designated by successively arranged in the conveying direction support rollers for supporting and promoting general cargo with the reference numeral 2.

Below the support rollers 2 , which are rotatably mounted in a frame or frame 3 , a continuously rotating traction means 4 is arranged. Between this continuously rotating traction means 4 and the support rollers 2 , intermediate rollers 5 are provided, by means of which the drive movement of the traction means 4 can be transferred to the support rollers 2 .

As can be seen in particular from FIG. 2, the support rollers 2 are grouped together, in the illustrated embodiment four support rollers 2 lying one behind the other form a support roller group.

Corresponding to this, four intermediate rollers 5 are also combined into a group. These intermediate rollers 5 are rotatably mounted on a linkage 6 , preferably with radial play. The linkage 6 is suspended on the frame or frame 3 by means of two levers 7 .

In Fig. 2, the arrow A denotes the conveying direction of the accumulating roller conveyor 1 . FIG. 2 shows that the two lever 7, on which a rod is suspended pendulum 6, respectively, are inclined in the conveying direction.

At the front end of the linkage 6 , an actuating rod 8 is connected, the other end of which is coupled to a sensor 10 which can be actuated by the piece goods 9 (shown in broken lines in FIG. 2). The sensor 10 is designed as a lever and has a feeler roller 11 or switch cam protruding into the conveying area of the piece goods 9 .

The sensor 10 is suspended on the frame or frame 3 in an oscillating manner about a pivot axis 12 .

At the front and coupled to the sensor 10 end of the actuating rod 8 , a tension spring 13 is connected, the other end of which is again fixed to the frame or frame 3 . The actuating linkage 8 is acted upon in the conveying direction by this tension spring 13 .

In the transport situation shown in FIG. 2, the sensor 10 is not actuated, ie the sensing roller (switching cam) 11 of the sensor 10 protrudes into the support area of the support rollers 2 . In this position, the linkage 6 is pivoted in the conveying direction and the intermediate rollers 5 are in contact with the traction means 4 on the one hand and in contact with the respectively associated support roller 2 . This means that the four support rollers 2 acted upon by the intermediate rollers 5 are driven.

If the piece goods 9 , indicated by dash-dotted lines in FIG. 2, moves further in the transport direction in the form of a box, the sensor 10 is actuated via the feeler roller (switching cam) 11 . This leads to the sensor 10 being pivoted downward in the direction of arrow B in FIG. 2 and the actuating rod 8 being displaced in the direction of arrow C, that is to say counter to the conveying direction. At the same time, the linkage 6 is pivoted and raised counter to the conveying direction A, so that the intermediate rollers 5 lose their contact with the traction means 4 . The drive of the grouped support rollers 2 is thus canceled.

The last intermediate roller 5 seen in the conveying direction is assigned a stationary brake pad 14 , to which the last intermediate roller 5 is pressed when the sensor 10 is actuated. Since the last intermediate roller 5 does not lose its contact with the assigned support roller 2 , this last support roller 2 is braked accordingly.

In the entire accumulating roller conveyor 1 , many support roller groups arranged one behind the other are provided with a mechanism as described above.

The overall situation when operating the accumulating roller conveyor 1 is as follows:
Provided that the piece goods 9 to be conveyed are transported trouble-free at predetermined intervals, continuous operation is guaranteed.

If a jam occurs, for example, due to any disturbance, it is inevitable that a piece of goods 9 actuates a sensor 10 at any point. The carrier roller group 2 arranged in front is then braked, as described further above, so that subsequent piece goods are not conveyed further. In addition, by the braked piece goods and the sensor 10 lying in this area, the idler roller group lying in front of it in the direction of transport is also braked.

An accumulation and nesting of subsequent goods to be transported is thus safely prevented.  

If general cargo 9 is placed in consecutive intervals at too short a point, the partial braking of a group of idlers also ensures that the individual general cargo is brought back to a predetermined distance from each other. The means required for this are structurally particularly simple to implement, and in addition there is the advantage that both the braking forces and the driving forces are automatically increased ver if piece goods with increased weight are to be conveyed or braked. This is because increased weight loads on the support rollers 2 transmit increased frictional forces to the intermediate rollers 5 , so that the driving forces or the braking forces are automatically increased, depending on the transport situation.

The brake pad 14 is preferably arranged to be adjustable in order to compensate for any abrasion or to be able to change the onset of the braking effect.

Basically, according to the principle described above, in addition to the last support roller 2, further support rollers 2 of a transport roller group can be delimited.

As an alternative to the exemplary embodiment shown, it is also conceivable to use a pneumatic, motorized or magnetic actuator instead of the sensor 10 and the actuating rod 8 .

Claims (9)

1. Accumulating roller conveyor for the storage and conveying of piece goods without back pressure, comprising a plurality of support rollers arranged one behind the other in the conveying direction, rotatably mounted in a frame or frame, which are drive-linkable by intermediate rollers with a continuously rotating traction means, the support rollers being grouped together and the Intermediate rollers of each idler roller group are connected by an adjusting means to a sensor controlled by the piece goods and can be moved by this into a drive and a free-wheel position, the last idler roller - seen in the direction of conveyance - being braked in the free-wheeling position, thereby characterized in that the intermediate rollers ( 5 ) are each mounted on a pendulum-suspended linkage ( 6 ), that the intermediate rollers ( 5 ) are lifted from the traction means ( 4 ) against the conveying direction in the freewheeling position when the sensor ( 10 ) is actuated and when not actuated Sensor ( 10 ) both on the traction means ( 4 ) as well as on the support rollers ( 2 ) and that in the freewheeling position the last intermediate roller ( 5 ) is pressed against a stationary brake block ( 14 ) and at the same time on the last support roller ( 2 ). 2. accumulation roller conveyor according to claim 1, characterized in that the inter mediate rollers ( 5 ) are mounted with radial play on the linkage ( 6 ). 3. accumulation roller conveyor according to claim 1 or 2, characterized in that in addition to the last idler ( 2 ) further idlers ( 2 ) of a transport roller group are braked according to the same principle. 4. accumulation roller conveyor according to claim 1 or 2, characterized in that the brake pad ( 14 ) is adjustably attached. 5. accumulating roller conveyor according to one or more of claims 1 to 3, characterized in that as an adjusting means on the one hand on the linkage ( 6 ) is connected and on the other hand with the sensor ( 10 ) coupled actuating rod ( 8 ) is provided. 6. accumulation roller conveyor according to claim 4, characterized in that on the front, with the sensor ( 10 ) coupled end of the actuating rod ( 8 ) engages a tension spring ( 13 ), which on the other hand on the frame or frame ( 3 ) is closed. 7. accumulating roller conveyor according to one or more of the preceding claims, characterized in that the sensor ( 10 ) consists of a pivotally mounted on the frame or frame ( 3 ) lever with a protruding into the conveying area of the piece goods sensing roller (switching cams) ( 11 ). 8. Accumulating roller conveyor according to one or more of the preceding claims, characterized in that the sensor ( 10 ) consists of a lever pivotably mounted on the frame or frame ( 3 ) with a switching cam projecting into the conveying area of the piece goods. 9. accumulation roller conveyor according to one or more of the preceding claims, characterized in that adjusting means and sensors from a pneumati rule, motor or magnetic actuator.