JPS6137084B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a conveyor belt manufacturing apparatus.
The device includes a longitudinally threaded wire or rope-like reinforcing core and an important production station of the device, in which the reinforcing core is intertwined in the region of the inlet and a vulcanized conveyor belt in the region of the outlet. synchronously driven friction rollers, in which the friction rollers are engaged, and a tightening device, which follows said friction rollers in the region of said inlet and acts in each case on a single element of the reinforcing core.

So-called steel rope conveyor belts, i.e. wire ropes oriented only in the longitudinal direction and threaded parallel to each other without mutual contact, as reinforcing cores,
The nature of the special problem in the manufacture of belt conveyors with strength retainers of cables or the like is that a large number of single reinforcing cores are formed in a uniform sheet shape and guided by a device in one plane. The object is to subject the element to a uniform and constant tensile stress in all areas and to maintain this tension until the completion of vulcanization. Significant differences in tension distribution can cause distortion and bowing of the finished conveyor belt, which can result in belt guidance failure and thrown material during subsequent operations. Particular attention must therefore be paid to the construction of the tensioning and stretching devices and to the friction rollers that are continuously used for transporting the tensioned reinforcing device and to their drive and control. A device which is fully satisfactory in this respect and whose basic structure complies with all practical requirements of manufacture is described in German Patent No. 1 579 102.

An important prerequisite for the operation of such production equipment is that the tensile stress applied to the reinforcing core or to a length of the belt blank is not present at any time and during long work interruptions or outages. It cannot be stopped, or it can only be loosened very slightly. However, experience has shown that in tensioning devices that are composed of many parts and are relatively prone to failure due to the entanglement of multiple ropes, the guidance of the wire rope can again and again deviate indefinitely from its planned course, and the movable parts and, at least, an accumulation of defects that can be removed only in the absence of tension in the threaded wire rope. However, the end of the tension release of the wire rope is the beginning of the risk of unforeseen quality deterioration for the finished product, and despite the utmost care it is not possible to completely prevent failures that occur during production, so this invention The task is to avoid disadvantageous consequences that result from the elimination of faults and are more than just a waste of time.

According to the invention, a fixed clamping device is provided in a device of the type mentioned at the outset. This fixed clamping device has a movable clamping member which laterally captures the entire reinforcing core and fixes it in the closed state between the friction rollers, in particular between the tensioning device and the device immediately following this tensioning device. Advantageously, the clamping member is disposed between the production stations and is movable independently of the operating state of the device.

By means of the invention, by adding a fixed clamping device, the reinforcing core can be kept at rest under tension, if necessary, with respect to the tensioning device directed towards the beginning of the production device. The desire to insulate can be realized. This allows the part of the seat inside the tensioning device to be completely released from tension, and any malfunctions that may have happened to occur without tension can be detected. In that case, there is no need to worry about reactions to the portion of the preceding sheet that was placed under the original stretch tension. Therefore, this invention
It fulfills a desire that has already existed for a long time in the practice of producing steel rope conveyor belts and in this way significantly increases the usefulness of the known production equipment. This invention can be highly evaluated because it can be used not only for the designed device, but also when connected to an existing device later.

The figure showing one embodiment will be explained in more detail.

The illustrated apparatus used for the production of steel rope conveyor belts has as important stations a production table 1, where a wire rope 9 placed under stretching tension is pasted with a rubber cover plate wound on a winding drum 7; , has a double calender 2 for pre-compressing the belt rough material, and a vulcanizing press 3 for vulcanizing and finishing each section of the rough material. The whole device consists of a set of friction rollers 11 in the starting end area and a set of friction rollers 1 in the ending area.
It is between 2. The two sets of friction rollers mentioned above can be interconnected and driven synchronously, for example via radio waves 10, so that the rollers have a limited tensioning area, as shown in the figure. A wire rope 9 drawn out from the unfinished bobbin creel is passed through and carried until the finished conveyor belt is removed (from the machine). A winding platform 8 is provided on the outside of the tensioning section for accommodating the vulcanized conveyor belt sections. In order to individually tension the individual wire ropes 9, a tensioning device is provided immediately adjacent to the friction roller 11 in the starting region. In the embodiment shown, the device comprises deflection rolls 16 loaded by compaction agent-acting cylinders 15, each of which is covered with a wire rope.
It is becoming. The manufacturing apparatus described up to now is known per se, and any changes can easily be made in the structure and self-definition of its various components.

According to the invention, an additional clamping device 4 with a movable clamping member 14 is fixed between the tensioning device 15, 16 and the unwinding drum 7 of the finishing station. The clamping device 4 captures the wire rope 9 over its entire width and, after pressing down the clamping member 14 in the closed state, tightens the wire against each movement under the action of the pressure medium cylinder 24. Secure the rope. The tensioning area is then limited to the spacing between the tightening device 4 and the friction roller 12, while the tensioning device 15, 16
The tension can be released without adversely affecting the result of finishing work.

To resume work, the compressive agent cylinder 15 of the tensioning device is again subjected to the predetermined pressure and the fixing device 4 can then be opened.

[Brief explanation of the drawing]

The figure is a side view of one embodiment. Reference numeral 4 in the figure: Tightening device, 9: Reinforcement core, 1
1, 12...Friction roller, 14...Tightening member.

Claims (1)

[Claims] 1 A wire-like or rope-like reinforcing core running longitudinally and containing the important production station of the device, with the reinforcing core intertwined in the area of the inlet and the vulcanized conveyor belt intertwined in the area of the outlet. In a conveyor belt manufacturing device with synchronously driven friction rollers, each of which acts on a single element of the reinforcing core, and a tightening device following said friction rollers in the area of said inlet, the entire reinforcing core 9 is A fixed clamping device 4 with a movable clamping member 14, which is laterally captured and fixes the reinforcing core in the closed state, is connected to tensioning devices 15, 16 between friction rollers 11, 12 and tensioning devices 15, 16 between friction rollers 11, 12. An apparatus characterized in that it is provided between the immediately next production station 1, 7.