Listogib is called a mechanical device that serves to flexing metal sheets. This device has found a massive use in the system of mechanical engineering, construction and economic spheres. Thanks to the leafopibib, the task of performing products in the form of a cone, cylinder, box or profiles of closed and unlocked contours is significantly simply simply simply simplified.
The sheet bending machine develops a certain effort and has such properties as the speed of bending, the length of the product, the bend angle, and so on. Many modern devices are equipped with a software control unit, which allows you to increase their performance and ease of use.
Purpose of Listogiba
Manipulation, due to which the metal sheet takes the form according to the specified parameters, is called bending or bending. Listogibobic equipment is suitable for working with any metal: steel, aluminum, galvanized iron or copper take the required form due to the fact that the workpiece is pulled out surface layers of metal and decrease – internal. At the same time, the layers walking along the bend axis retain their original parameters.
In addition to bending, The leaf bobbing machine is performed if necessary and cutting. So finished products are obtained – various types of cones, gutters, curly parts, profiles and other structures.
The variety of equipment modifications allows you to bend, straighten, attach a certain form of metal sheets according to the specified geometric parameters. But before starting work, it is required to take into account the form of the source material, its quality and thickness.
Device and principle of operation
The design of the listogib is satisfied simple: it is equipped with a rectangular frame made of durable steel chapellera. On the frame there is a pressure beam and horizontally rotating horizontally. The layout of the sheetogib with the swivel frame will help you to visually see the principle of his work. Placing a metal sheet on a bending machine, it is pressed by beam and installed a punch, which bends the material extremely smoothly and at a given angle.
The characteristic of the work of the leafogib depends on its design, when the bend is obtained when the PuNson turns, either by pressing from above. The bend angle can be controlled visually or put on the machine special limiters for specified parameters. On the leaf-bibs equipped with software control, for these purposes, 2 sensors are installed on the edges of the bending sheet, during the bending process they regulate the level of bending angle.
If it is required to make a rounded profile, the sheet bending modifications are used, performing such an operation by pressing the sheet into a special matrix.
Metal bending equipment is mini-sizes for manual applications or stationary used to perform work in industrial volumes. Bending machine according to the method of bending a sheet can be two-color, trival or four-tight. In addition, the bending machine happens with a rotary beam, or a horizontal automatic press operating using hydraulics works as a bending tool.
Universal hydraulic sheetogib It is used for desktop pulling sheet or flexion of parts on the length of the table – performance and accuracy of these machines are quite high.
Such equipment has a low cost and is most accessible to purchase. In addition, manual leafogibs have small sizes, they are lightweight and can be easily moved. The process of flexing a sheet of metal is performed due to the application of the manual strength of the operator operating on the machine. The manual machine provides a system of various levers, but Thick sheets of more than 1 mm on them bend difficult.
To speed up the process of bending on the machine, there is a simultaneous work of two people.
The advantage of this approach is that the metal sheet of metal together hold is much more convenient, and fixing and deformation are performed at this time at once from both sides. In some manual models of leaf bobbing machines, a rear supply of a metal sheet is provided, which allows each of the operators to freely approach the machine, without interfering with the partner.
Machines for flexing metal mechanical type Press moves due to electrical engine. Details, bend angle and so on can be set manually or automatically. On the sheet bending machines of the mechanical type can be operating, given the material and its thickness. For example, Sheets made of steel should not exceed the thickness of 2.5 mm, stainless steel is used in the range of 1.5 mm. However, there are also models of modern mechanical type sheet bibs on which it is possible to make a thickness of metal with a thickness of up to 5 mm.
An important feature of mechanical listogibs is that the leaf feed angle can be installed without restrictions. Similar machines have high reliability and simplicity design. This is a universal device, which can be quickly rebuilt under the specified parameters of the metal leaf.
Mechanical models are often used in production conditions, as the performance of such a sheetogib compared to manual is quite high.
Weighs the machine 250-300 kg, does not possess great mobility, but the bend angle can create within 180 degrees, which is difficult to achieve in manual models.
These machines allow you to perform products on specified geometric indicators. The accuracy of the execution of bending works on the hydraulic machine is far superior to, if we compare the results obtained when working on a manual or machine machine. In addition, the hydraulic system largely facilitates the work process, as the application of manual efforts of the operator completely eliminates. The most important features of hydraulic listogibs are their high power and performance. They are able to work with metal thick from 0.5 to 5 mm.
The essence of the operation of the machine is that the bending of the metal is carried out using a hydraulic press. The power of the machine is enough to work with sheets of large thickness. The design of the hydraulics provides fast and silent work machine, as well as reliability and rare hydraulic cylinders. However, in the event of a breakdown, the hydraulics will not be repaired on its own, as it is possible to disassemble such a cylinder only on a special stand, which is only in service centers.
With the help of hydraulic leafogib, products of a conical or semicircular shape are made – the bend can be performed at any angle. These machines have, in addition to direct destination, also a set of options. For example, a software control unit, bending angle indicators, protective devices for the operator’s safe operation and so on.
For the manufacture of complex models and configurations of sheet metal products apply large-sized Electromechanical equipment that is stationary installed in industrial workshops or profile workshops. Such machines have a complex design device, their mechanism comes into operating status due to the operation of the electric motor, the drive system and the gear motor. The basis of the leafhiba is a frame of steel, on which the rotary mechanism is mounted. The bending of the material is carried out by a bending knife consisting of several parts made of high-strength steel – such a knife design allows to significantly save in the process of repair.
Electromechanical Listogibic – These are machines equipped with software control, Therefore, all operation parameters are set in automatic mode. The computer program regulates the entire workflow, so for the operator operating on such a machine, the most secure conditions are created.
The accuracy of the machine allows you to process soft metals, scrupulously withstand all given geometric parameters, while having high speed and performance.
If necessary, you can refuse from automated control, and then the sheet metal in the electromechanical machine can be given manually. The parameters of the finished product can also be installed. Due to high precision and power on such a machine, steel sheets make items – it can be parts of a roof or facade, ventilation system, drainage, road fences, pointers, stands.
Bending press, which bends a metal sheet with an air compressor and pneumatic cylinders, called pneumatic listoBib. The press in such a car moves compressed air, and the device of most such models is based on the principle of rotary beam. Similar machines are stationary in the industrial premises, their work is accompanied by specific noise. The disadvantages of pneumatic labels include its inability to work with thick sheets of metal, and this is due to the lack of power of the machine. However, such sheet bobs are unpretentious, have high performance and versatility.
The process of working on the pneumatic press is fully automated, so operator labor costs are minimal. Pneumatic equipment is secure in operation and does not require expensive maintenance. But if you compare it with a hydraulic analogue, the preventive works of pneumatic models are performed more often. In addition, the cost of pneumatics is much higher than that of hydraulics machines.
Pneumatic leafy of more than other machines are suitable in order to process metal sheets with paint and varnish.
The machine in which the metal sheet for processing is pressed on the desktop using a powerful electromagnet is called electromagnetic sheet bending. The effort with which the pressing of the bending beam occurs during the work is up to 4 tons and more, and at the moment when the bending knife does not work, Metal sheet fixation force on the desktop is 1.2 tons. Such equipment has compact dimensions and a small mass. The reliability of the machine is the simplicity of its design, its control is fully automated by the software device, and the absence during the operation of cyclic processes makes it possible to increase wear resistance. Magnetic sheet bending has a high power, but is inferior to hydraulic analogues.
Of all the options for leaf bobc equipment, electromagnetic machines are at cost are the most expensive, in addition, during the work, they consume a large amount of electricity, so the cost of finished products becomes high.
The weak point of such equipment is the wiring – it is quickly wearing, causing the locks of the fuses.
Overview of popular models
Fixtures for bending sheet metal in the sales market are represented by models of Russian production, America, Europe and China.
Consider the rating of mobile listogibs.
- Model Jouanel France production – Maximum metal thickness for processing is 1 mm. The machine is suitable for performing complex products. The resource of the knife is 10,000 n. M. The cost of repair is high. Model for working with sheets 2.5 m costs from 230,000 rubles.
- Model Tapco US production is a fairly common machine that can be applied in a construction site. It has high performance, maximum metal thickness for processing – 0.7 mm. The resource of the knife is 10,000 n. M. Machine cost – from 200 000 rubles.
- Model Sorex Production Poland – Depending on the brand, metal can be treated from 0.7 to 1 mm thick. Machine weight from 200 to 400 kg. The machine has proven itself as reliable equipment, its average cost is 60 000 rubles. Able to perform even complex profile configurations.
- Model LGS-26 Production of Russia is a mobile machine that can be operated in construction work. Maximum metal processing thickness does not exceed 0.7 mm. The cost of the machine is low, from 35 000 rubles., In case of breakdown, repair does not require large investments.
Very difficult profile configurations are impossible.
But the rating of stationary leaf bobbing machines.
- German electromechanical Schechtl machine – Maxi brand models Processing sheets thick up to 2 mm. Possesses software, has 3 beam work segment, with the combined use of which you can perform different operations without additional equipment reconfiguration. The average cost is 2,000,000 rubles.
- Czech electromechanical Listogib Proma – Models have a bending ability of up to 4 mm, control and configuration are automated, roller wear resistance high. The electric motor is equipped with a brake device, which protects the machine from overload and allows it to work with high accuracy. The average cost is 1,500,000 rubles.
- Hydraulic modification machine Metalmaster HBS, Metal-produced in Kazakhstan – can handle metal to 3.5 mm thick. Has a lot of productivity and intended for industrial production. The machine works using a rotary beam and equipped with automatic control. The weight of the car is from 1.5 to 3 tons. The average cost from 1,000,000 rubles.
The choice of sheet bending equipment is currently quite large. Listogib model is chosen based on the volume of machine performance and tasks that you want to perform.
How to choose?
Choosing a leaf bending machine, determine for which size of the sheet metal it you need. Most often there are machines for a sheet size from 2 to 3 m.
Next you need to decide on the power of the device. For example, on a simple mechanical leaf bending, you can bend a zinc, a thickness of up to 0.5 mm, but the stainless steel sheet of the same thickness can not be processed, since the reserve of strength. therefore It is advisable to purchase equipment that has a slightly greater margin of strength than planned to be used. That is, if the material parameter is 1.5 mm, then a machine is needed with a bending ability to 2 mm.
Many modern machines are used to work with handled paint coatings. Such a metal is used for waterfronts, the caps of the drain, do roofing chute and so on. When forming on the machine of such products, it is important not only not to scratch the material, but also make the bend edges 180 degrees. Only those machines that have a special professional excavation can only be performed, or with the machine you acquire a foldswashing machine.
Additional components are often supplied to modern sheet bending machines, allowing you to perform the desired bend for wire or make professional flooring. Such components increase the cost of the machine, sometimes it is necessary for your work.
Operating and repair tips
Before starting work on the machine, you need to get acquainted with its device and explore the rules of operation. The new listogib will bend the products correctly, according to an derived straight line, but over time, if preventive tuning and adjustment has not been carried out, the bed of the sheetogib saves, and the finished products are obtained by screw. If the snap-in is adjusted to the machine, then remove the effect of the screw can be removed by adjusting the gaps, twisting the adjusting screws. The practice of using sheet boobs shows that the bed is not lowered by the models with a short frame to 2 meters, but the longer it is, the greater the likelihood of a deflection.
In order for the bending mechanism to serve for a long time, it is necessary to correctly make a calculation of efforts to perform work and not use metal sheets with a thickness above the stated machine ability. If the machine is used on the construction site, it must be cleaned regularly and lubricate all working units.
Do not forget also that the period from the bending knife is limited and the detail is replaced by its expiration. Similar equipment has a warranty service life of 1-2 years. When a mobile machine breakdown, you can contact it to repair to a service center.
As for stationary listogibs installed in enterprises, regular preventive and capital repairs performed at the place of installation of this equipment are held for them.
How to choose the right bending machine correctly, look next.