INDEX

KLIV presses
KLIV module: functional and economical

Available press sizes for conveyor belt widths from 400 - 1400mm: Compact press modules with integrated pressure and heating/cooling elements, for assembly into complete press units. The maximum weight of the heaviest component is only approx. 75kg. The ideal equipment for the vulcanizing of small and medium belt widths up to 1400mm. Particularly convenient and extremely economical to operate.
KLIV combi: combination all-purpose press.

Available press sizes for all conveyor belt widths, particularly above 1400mm. Pressure traverses, heating/cooling elements and, depending on traverse length, the pressure elements of this system are designed as subassemblies. Hence all press components are easy to handle evem when a belt width of up to 3200mm is to be spliced. Any combination as regards length and width of the vulcanizing area is feasible. The optimum unit construction system.

Highlight for underground vulcanizationī: KLIV® - EExd I / Ex Sch -FLP-


1. Automatic ceramic heating system. This system overcomes the major problem of non-uniform temperature distribution inherent in conventional vulcanizing heating systems. It does this in a unique and very simple manner eliminating the need for any temperature control equipment.

2. Hydro-mechanical system for uniform pressure.The simplest possible method of mechanically tightening tension bolts is used to apply hydraulic pressure. Beam deflection is compensated for by special hydraulic elements thus giving the best possible method of obtaining uniform pressure distribution.

3. The unit construction principle of KLIV. All KLIV vulcanizing presses consist of individual unit assemblies. The number of units depending on the demensions of vulcanizing area. These units are considerably lighter and more compact than those of conventional systems, making them portable and easy to assemble. Hence, KLIV vulcanizing presses are avilable for service anywhere.
KLIV ceramic heating elements for uniform temperature distribution. Automatically controlled.
Guaranted temperature stability: a must for accurate vulcanization.
As power is applied to the ceramic heating elements their electrical resistance increases with temperature rise until the set point is reached, when the temperature is precisely maintaned. This results in an equal temperature rise and constant set level of temperature uniformly across the complete press surface unaffected by the ambient temperature. Based on the selection of the ceramic recipe the maximum limit temperature is unadjustable.
The KLIV heating/cooling elements not only prevent too high or too low temperatures, but also uneven temperature distribution. The vulcanizing process is allways completed exactly according to specification; precise repetitionis guaranted. The temperature cycle of the vulcanizing process can be observed by means of remote thermometers.
No control devices, no control problems.
The hydraulic pressure is generated mechanically by tightening the traction bolts.
The KLIV heating/cooling elements are self-controlling. There is no need for you to check the maintain sensitive control devices, thus eliminating common sources of trouble.
Though it sounds very simple this system is by far the most reliable. Traction bolts are installed in both ends of the top and bottom pressure traverses. These bolts are tightened simultaneosly on each side, with a torque multiplier which is driven either manually, or with an electric or pneumatic screw driver.
Pressure distribution by hydraulic elements.
No need for pumps, clutches, cylinders, hoses and hydraulic libes when using the KLIV pressure system.
The hydraulic pressure elements are installed on the underside of the top pressure traverses. The mechanically generated hydraulic pressure is distributed uniformly over the whole conveyor belt width. This system is really simple and reliable.
Further advantages of the KLIV hydraulic elements: they are corrosion-proof, and resistant to temperature changes and fracture. Furthermore, because of the material they are made of, the elements act as a thermal insulation barrier between the heating and pressure system, thereby minimising thermal energy loss.
Simple current feed.
Waterproof and maintenance-free.
Each KLIV heating/pressing element is equipped with plug and connecting cable. Connection to the power system is made by means of terminal boxes which are equipped with overload protection. Phase control is standard.
KLIV heating elements are welded at the ends; thus being absolutely waterproof. They do not require any checks or servicing, yet provide maximum performance peliability. Should, however, one heating element fail to work, it can easily be replaced by a spare element. When using conventional presses even a minor electrical defect would result in a total breakdown of the complete press.
Integrated cooling by evaporation. This ensures shorter cooling down times.
Perfectly uniform pressure by hydraulic elemnts incorporation deflection compensator.
All KLIV heating/cooling elements have cooling channels into which water is metered. The evaporation of water into steam results in a very effective cooling. In 10 to 15 minutes the press is cooled down to below 100 0C, using a surprisingly small amount of water. Alternatively, the cooling channels can be equiped with hose couplings to be connected to the water mains for quickest possible cooling.
The shape of this slightly curved compensator corresponds exactly to the deflection of the traverses at nominal pressure. A perfectly uniform pressure over the total belt width is guaranteed. The pressure is equally distributed from the press center to the edges; thus, eliminating splice defects caused by pressure fluctuations. Consequently: the same applies to pressure as applies to temperature - uniformly over the total vulcanizing surface.
Accurate pressure control by visual inspection.
Heating/pressing sheets for perfect pressure and heat transmission.
Each KLIV pressure traverse is equipped with a gauge for precise control of the pressure development. The traction bolt at each end are to be tightened uniformly and simultaneously until the needle of the gauge has reached the "green" mark.
There is a variety of KLIV heating/pressing plates available for all possible splices as regards width, length and area. Test bores are provided for remote thermometers to monitor temperature.


Simple and rational: KLIV module. For conveyor belt widths from 400 to 1400 mm.
1. The KLIV spacing rails are placed on an ordinary work table or on any suitable support. They assist in fixing the correct spacing of the bottom modules and provide accurate horizontal and parallel alignment.
2. As a first step the bottom modules (without hydraulic pressure elements) are put on top of the spacing rails so that the traverse sections are positioned between the guide pins of the rails.
3. The number of modules needed depends on the length of the splice to be made. The module width is allways 200mm.
4. After precise alignment of the bottom modules a heating/pressing sheet of matching size is placed on top. Accurate positioning is guaranteed by the guide supports on the heating/cooling elements.
5. Preparation of the belt splice is done accorning to manufacturer's instructions
6. After the edge bars and the top heating/pressing sheet are coorectly positioned and aligned. The optional edgr bar clamping devices are fitted into the bottom traverses. These are fitted into the bottom traverses. These are suitable for pressing the edge bars and holding the heating/pressing sheets, quantity required depends on length of press.
7. Then the top pressure traverses are placed on top. Ensure that the gauges as well as top and bottom cable plugs are on the same side. Insert the traction bolts.
8. Carefully push traction bolts up to the stops. Then tighten simultaneously and uniformly on both sides until the needle of the gauge has reached the green mark. This procedure is repeated with each traverse. During the vulcanizing process the hydraulic pressure rises automatically up to the nominal operating pressure marked "red" at the gauge.
9. Connect all cable sets to the terminal box, which in turn is connected to the main electrical supply. The heating-up process can now begin.
10. Switch off the electric current after compietion of the vulcanizing period. Place cooling water containers on the press and connect the hoses to the cooling channels of the heating/cooling elements.
11. When the container is turned on its side, water will be metered into the cooling channels. The water evaporates and results in a very effective cooling. The cooling process is finished when no more steam escapes - the temperature of the press having cooled down to below 1000C
Disassembly is in reverse order.


Possible range of applications
1. rectangular
2. rhombic
For rectangular splices the KLIV modules have to be arranged at the right angle to belt running direction.
For rhombic splices the KLIV modules can be arranged according to the rhombic configuration, and at whatever angle is desired.
3. Wide pressure range
The specific vulcanizing pressure can be varied by altering the number of KLIV modules on a given press length.
4. Specific pressure
5.Variable vulcanizing area
The pressure range can be made to vary between approx. 75 - 150 N/cm2.
For larger vulcanizing areas any number of KLIV modules can be arranged in line just ny using adequately long pitching rails.
6. "Step by step.
7. Additional time economy
Step by step method is applied in many countries. Guarented and quality "step by step" splices are possible by insignificant usage and limited value of investments. By using additional traverses and heating/pressing sheets of corresponding length.
Reached due to the fact that disassembling can start during the press cooling.

Combination all-purpose press.
For all belts, especially for belt widths over 1400 mm.
1. KLIV spacing rails are placed on an ordinary work table or on any suitable support. They are used to fix the correct pitch of the bottom pressure traverses and provide accurate horizontal and parallel location.
2. As a first step the bottom traverses (without hydraulic pressure elements) are put on top of the spacing rails so that the traverse sections are positioned between the guide pins os the rails.
3. The number of traverses and the length of the heating/cooling elements depends on the length of the splice to be made. Based on the required specific vulcanizing pressure the traverses are arranged either at larger for smaller intervals, or in close rows for maximum pressure.
4. The separate heating/cooling elements are placed on the bottom pressure traverses in the running direction of the conveyor belt. Guide cams are used to provide firm support for the heating elements. The heating elements have a standard width of 200mm and can be manufactured up to 3000mm of length.
5. The bottom heating/pressing sheets are placed on the bottom heating elements. Accurate positioning is guaranteed by the guide supports on the bottom traverses. Connect the cable sets to the bottom heating elements and the water hoses to the cooling channels.
6. Preparation of the belt splice is done according to manufacturer's instructions.
7. The edge bars and the top pressing/heating sheets are correctly positioned and aligned. The optional edge bar clamping devices are fitted into the bottom traverses. These are suitable for pressing the edge bars against the belt. The number of devuces requires depends on the press length.
8. The top heating elements are placed and accurately aligned with the bottom elements. Accurate positioning of the heating/pressing sheet is quaranteed by guide supports.
9. Then the top traverses with their hydro-mechanical pressure element will be assembled. Insert the traction bolts immediately on both sides into the traverse profiles to prevent from tilting over. Ensure that all gauges are on the same side.
10. Carefully push traction bolts up to the stops. Then tighten simultaneously and uniformly on both sides until the needle of the gauge has reached the "green" mark. This procedure is repeated with each traverse. During the vulcanizing process the hydraulic pressure rises automatically up to the nominal operating pressure marked "red" at the gauge.
11. Connect all cable sets to the terminal box, which in turn is connected to the main electrical supply. Insert the termocouple needles into the appropriate bore holes of the heating/pressing sheets. The heating up process can now commence.
12. Swith off the electric current after completion of the vulcanizing period. Place cooling water containers on the press. When the container is turned on its side, water will be metered into the cooling channels. The water evaporates and resuslts in a very effective cooling. The cooling process is finished when no more steam escapes - the temperature of the press having cooled down to bellow 1000C.
Disassembly is in reverce order.

Possible range of applications.
1. Rectangular
2.Rhombic
For rectangular splices the KLIV traverses have to be arranged at right angles to belt running direction.
For rhombic splices the traverses and heating/cooling elements can be arranged according to the rhombic configuration, and at whatever angle is desired.
3. High pressure
4. Less ammount of heating/cooling elements
For maximum specific vulcanizing pressure the traverses are arranged in close rows. In general the range can vary between 75 and 150 N/ńm2.
By small width of conveyor belt or by lengthwise series faults repairs put a less ammount of heating/cooling elements.
5. Longer traverses
6. Two units
Longer traverses are needed for the wider belts. but only a few heating/cooling elements have to be added. Consequently there is no need to have one complete press for each belt size.
For long splices and repairs two combi press units are arranged in line. It is recommended to use heating/pressing plates corresponding to the total press length.

Vulcanizer presses


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