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Hydraulic tube bending machine is one of the commonly used equipment for bicycle occupation and electric bicycle occupation. According to the different bending pipes, it can be divided into a large type of pipe bending machine on the handlebar, a pipe bending machine on the frame, and a hanger bending machine. According to different constructions, the pipe bending machine can be divided into a cored pipe and a coreless pipe. In the bicycle and electric bicycle production occupation, the coreless pipe bending skill is generally used, because the core bending machine and the coreless bending machine are There must be differences in the price, and there must be a difference in the tortuous processing and capital.

The cored bender is detailed in:

1. Before the elbow is bent, it is necessary to expand the mouth to remove the cutting tube socket, otherwise the mandrel can not be inserted.

Second, the demand inside the pipe is smooth;

Third, the core rod penetration requirements are higher, conditioning trouble. However, in the process of bending, sometimes the interval between two adjacent curves is small, such as: the pipe on the hanger, etc., at this time, the coreless roller elbow is still selected, and the positioning clamping device and the outer roller are presented. The wheel lacks the condition of the installation space.

For example, the linear interval between the two curves is 72mm. It is impossible to use the conventional coreless roller hydraulic pipe bending machine. Generally, the cored hydraulic pipe bending machine is used. In order to deal with the above difficulties, we designed a CNC coreless automatic pipe bending machine. This is indispensable for the selection of coreless bends in the case of dealing with two adjacent bending moments.

The overall structure of the machine operating principle, the operation is convenient and fully automatic input, CNC control, very accurate and efficient. The tube blank is laid flat on the two groove plates 4, and the compression cylinder 1 drives the punch 3 to be pressed. The tortuous part is controlled by a rack and pinion servo motor, and the zigzag inversion is controlled by a servo motor. The tortuosity has high precision.

The pipe bending machine is a new type of bender with the function of bending and the function of the top. It has many advantages such as reasonable structure, safe operation, convenient operation, reasonable price, fast loading and unloading, multi-purpose machine, etc. It has a large proportion in the domestic hydraulic pipe bending machine market, mainly used in factories, warehouses, docks, construction, railways, cars. Wait for device pipes and patching. In addition to the function of the elbow, it can also be used as a separate hydraulic hoist.

Then, the tube bender that is purchased back should pay attention to the following conditions when using it:

1. Before operation, please check whether the smooth points of the machine are short of oil, whether the safety protection equipment is secure, whether the movement mechanism is loose, etc.

2. Start the elbow oil pump and check whether the system pressure is within the regular range. If it is high, it will damage the hydraulic components and spoil the power supply. If it is too low, it will affect the operation.

3. Adjust the required orientation and required angle of the part and position the part to the required length.

4. Adjust the vertical lifting rail so that the guiding mold pressing cylinder can clamp the tight iron pipe.

5. The clamp clamping cylinder can clamp the pipe fittings.

6. Normal operation Put the workpiece into the zigzag mold, and the front end touches the positioning, and the foot switch is pressed to complete the knot.

7. After the operation is completed, cut off the power supply and do a clean and smooth operation.

8. If the operation of the bending machine is in an emergency, press the emergency stop button, then turn the rotary switch to the manual position, and manually reset it. If something goes wrong, please report it in time.

In the practice of production, the traditional relay control system is often not satisfied with the traditional relay touch control system, because there are a lot of simple program control processes controlled by the switch quantity, and the actual production process and process are often changed. Therefore, there has been a combination of relay touch control and electronic technology, called the sequence controller.

The electrical control of the traditional CNC cutting and bending machine is a relay touch control system, which consists of a relay, a touch device, a button, a travel switch, etc., to realize the operation of the pipe bending machine, parking, and extreme speed control. The advantages of the relay touch control system are simple structure, convenient protection, strong anti-interference and low price, so it is widely used in various bending machines and mechanical equipment.

In the process of making pipe bending machine molds, CNC bending machine molds are required in all aspects of forming molds, hot working molds, cold working molds and plastic molds. In addition, cars, high-speed trains, general machinery operations, and the wood processing industry, which has gradually expanded in recent years, have become the primary users of the CNC tube bending machine mold profession.

The installation of pipe bending machine mold is an extremely important task. Mold installers need to have the expertise to operate tube bender and properly adjust the bend mold, which is important for the quality of the bend. Mold installers must develop the concept of personal safety awareness, and the installation of the mold must be carried out in a safe manner. All mold installers should recognize the importance of safety and the ability to provide a safe operating environment to others when performing their own work. The mold must be suitable for the size of the machine. If the pipe is bent more than the original value, the excessive load of the machine will cause the mechanical properties to fail, and it may damage the personnel in the operation.

1. Do not install, adjust or move the mold without reading or understanding the mold installation instructions on the manual.

2. Do not wear ties, jewelry or loose clothing when working at or near the machine.

3. Do not place any part of your hand, fingers or body in the mold operating area with the oil pump motor activated.

4. If the mold is too heavy to lift by hand, use a suitable mechanical lifting method. A lifting eye should be installed on the mold, and the lifting ring should be used to keep the mold parts stable during the hanging process.

5, the mold should be wiped clean before installation, and remove dust, metal cutting or other foreign dirt. Failure to do so may result in mismatched matching, which may result in personal injury or damage to the machine or mold.

6. The elbow lubricant will make the surrounding area slippery, and the mold area will be carefully treated in the dirty mold area. When the tube is bent, the end of the tube coated with the absorbent coating will be inserted into the safe and practical range of the mold to prevent bending. The pipe lubricant drops on the machine.

7. Do not place any part of your hand, fingers or body in the mold operating area with the oil pump motor activated.

8. When the bender is inoperable or unattended, even for a short period of time, check all switch settings before restarting the machine.

In the use of pipe bending machine, the problem of deformation of the bend is encountered. What is the cause?

From the process analysis, it can be known that the common bending pipe bending defects are mainly in the following forms: serious flattening at the arc (ellipse), excessive reduction of the outer wall of the arc, excessive bending of the outer arc, round The inside of the arc is wrinkled and bent back. With the different bend radius of the bender, the first four types of defects are different in the way and location, and do not necessarily occur at the same time, but the elastic rebound of the curved workpiece is inevitable.

The presence of bent pipe bend defects has a large negative impact on the quality of the bent pipe fittings. On the one hand, it may cause the cross-sectional area to decrease, thereby increasing the resistance of the fluid flow, and on the other hand, affecting the functional effect of the pipe in the structure; the wrinkling of the inner wall of the pipe not only weakens the strength of the pipe, but also easily causes the velocity of the flowing medium to be uneven. The eddy current and the curved part accumulate dirt, which affects the normal use of the bent pipe; the rebound phenomenon inevitably makes the bending angle of the pipe larger than the predetermined angle, thereby reducing the bending process precision. The thinner wall thickness will inevitably reduce the ability of the pipe to withstand the internal pressure, affecting its performance; the distortion of the cross-section shape of the bent pipe. Therefore, corresponding measures should be taken before the bending to prevent the above defects from being generated to obtain the ideal pipe fittings. Product performance indicators and appearance quality.

The power supply of the PLC control system of the tube bending machine is one of the main ways for the interference signal to enter the PLC, which is mainly generated by the impedance coupling of the power supply line. The power grid interference into the PLC control system is mainly coupled through the power supply of the PLC system, the power supply of the transmitter, and the power supply of the instrument with direct electrical connection with the PLC system.

Nowadays, the power supply of the PLC system generally uses a power supply with better isolation performance, and the power supply for the transmitter and the instrument power supply with direct electrical connection with the PLC system have not received enough attention. Although certain isolation measures have been taken, they are generally not enough. The main use of the isolation transformers has large distribution parameters, poor interference suppression capability, and common mode interference and differential mode interference through power supply coupling. In addition, the AC magnetic field of cattle produced by various high-power electrical equipment is also the main source of interference, especially the changes inside the power grid, the surge generated by the operation of the gate, the start and stop of large-scale power equipment, and the harmonic caused by the AC-DC transmission. Waves, the impact of the short-circuit transient process of the power grid, etc. will cause serious ten disturbances to the power supply of the PLC connected to the same power grid. In severe cases, the PLC may even crash during operation.

Therefore, for the power supply of the transmitter and the common signal meter, the distributor with small distributed capacitance and suppressed bandwidth (such as multiple isolation, shielding and leakage inductance technology) should be selected to reduce the interference to the PLC control system. In addition, in order to ensure that the power supply of the PLC control system is not interrupted, the online uninterruptible power supply (UPS) can be used to improve the safety and reliability of the power supply. UPS has strong interference isolation performance and is an ideal power supply for PLC control systems. In order to suppress the grid voltage fluctuation and power frequency interference caused by the startup of large-capacity equipment, an isolation transformer and an AC voltage regulator are generally used, and filtering is performed, and all the shielding layers are well grounded. The power grid often contains high harmonic components. When the grid load is large, the grid voltage fluctuations are relatively large. In order to effectively weaken and eliminate the interference signal from the power grid, a high-performance isolated power supply should be selected to suppress the power grid interference.

1. CNC Tube Bender motor failure cause 1 When the bending machine motor is repaired, the stator winding turns are reduced too much; 2 The power supply voltage is too high; 3Y the bending machine motor is misconnected to Δ; 4 The bending machine motor is assembled The rotor is reversed, so that the stator core is not aligned, and the effective length is shortened; 5 the air gap is too large or uneven; 6 When the old winding is removed, the thermal splitting method is improperly used to burn the iron core.

2, troubleshooting 1 rewind the stator winding, restore the correct number of turns; 2 try to restore the rated voltage; 3 bend the motor to Y; 4 re-assembly; 5 replace the new rotor or adjust the air gap; 6 repair the core or re- Calculate the windings and increase the number of turns as appropriate. The Jiejie mechanical pipe bending equipment adopts the domestic advanced Far East motor. The safety and reliability failure rate is extremely low.

Independent research and development of CNC tube bending machine and high-end tube end forming machine control system software team. The software simulation module can simulate the actual machining process and detect the interference of the machining process; the fault knowledge base, the anti-wrinkle touch group, the multi-section live core device, the three-layer structure system based on the interface technology, so that the upper computer program and the motion control card Separation, improve the flexibility of the whole system; the application of a number of techniques such as the tapered lever push-clamping device has been found to be the first in the world by the national first-level search unit; automatic processing can realize multi-coordinate linkage, motion control card and sequential motion comprehensive control . Using a database server to uniformly store the processing information of the entire workshop not only facilitates the maintenance of the database, but also reduces the cost. The intelligent process planning, automatic rebound compensation and extension compensation, and intelligent anti-wrinkle system of CNC tube bender software are among the first in the world, greatly increasing the added value of products. The system is developed based on the Windows XP platform, and the processing interface is laid out in a graphical manner. An intelligent system that realizes motion synthesis control and automatic process decomposition and fusion processing in graphical programming.

The pipe bending machine is a machine that uses mechanized processing, and it is also guaranteed in terms of processing quality. Usually, the automatic pipe cutting machine should be properly protected and maintained, which not only extends the operation time of the automatic pipe cutting machine, but also reduces the time. Conflicts between the various components of the equipment to improve the efficiency of the work, but if the post-protection and maintenance work is not done, it will cause different forms of wear of other components, which will also reduce the work efficiency and affect the processing quality. Then let us introduce the protection requirements of the bender here, let's get to know the friends who want to know!

(1) Neat: dexterous things, workpieces, accessories; complete safety protection device; intact wire tube.

(2) Cleaning: automatic table cutting machine cleaning; sliding surface and screw, gear, rack, no oil, no bump, no leakage, no leakage, no leakage, no leakage, chip The waste was cleaned up.

(3) Lubrication: Once the fuel changes, the oil meets the requirements; the oil tank, the oil gun, the oil cup, the linoleum, the oil line are cleaned, the oil specification is bright, and there is no oil flow.

(4) Safety: personal machine and connected system; understand the structure of the equipment and abide by the operating procedures, use the equipment reasonably, carefully protect the equipment and avoid accidents.

As for the many uses of the pipe bending machine, we have also learned in detail, only the special equipment it provides and the complete set of pipe bending machines have now brought great convenience to the industrial industry. No matter which category of the day is, it is inseparable from the penetration of these advanced machines. The use of pipe bending machines is also an epoch-making improvement and optimization. This not only greatly improved the power of the work, but also played a complete effect on the operation of the entire society.

It is necessary to make the plates of different materials cut according to the required scale, which also requires the pipe bending machine to have so many functions. And the pipe bending machine that we know and understand is still the type of forging press type pipe bending machine. Its important utility is the processing mission of metal materials. Moreover, the importance of the pipe bending machine in the actual application of the edge is fully reflected in the aviation business, light industry, metallurgical skills, chemical industry, architectural design, shipbuilding, automobile category, electric power skill, electrical pipe bending machine, decoration Engineering and other different occupations.

The pipe bending machine that we usually hear is actually a pipe bending machine that cuts its plates by a number of blades and another blade in a reciprocating linear motion. Since its basic principle is primarily the performance that takes place with the aid of the upper blade in motion and the lower blade that is fixed. It also shows that the operating principle of the pipe bending machine is actually the power system that we can understand. The reason for using such a principle is to rely on the suspected gap between the blades. In this case, the sheet product of various materials of different thickness can be applied with shearing function.

There are three main driving methods for automatic pipe bending machines: motor drive, hydraulic drive, and motor hydraulic hybrid drive.

1, hydraulic drive

With the continuous development of industrial skills, hydraulic transmission skills are one of the fastest growing skills in mechanical equipment, especially in recent years, entering a new stage of development. The hydraulic transmission and control system is widely used in various industries due to its high transmission power, control precision, fast response speed and easy to complete the integrated control of motor fluid. The fully active pipe bending machine powered by hydraulic pressure is a new type of pipe bending structure, which has the advantages of reasonable structure, convenient operation, safe use, fast loading and unloading and multi-purpose of one machine.

2, motor drive

Today's modern industry, most organizations and equipment power sources use motor-driven methods to power the fundamental action of the entire equipment. Power is supplied from the motor. In the process of power transmission, there are many methods. For example, the motor can be used to drive gears, racks, cams, connecting rods, etc., and the automatic pipe bending machine that meets the requirements can be planned according to the situation.

3, motor hydraulic hybrid drive

Although the CNC Tube Bender has the advantages of high transmission power, high control precision and fast response speed, it also has some shortcomings, such as: because the operator has too much action, the production power is low; the machine loss is large, the service life is shortened. There are many operators required, labor costs are large, and product costs are high. Therefore, in the further discussion, it is proposed to select the motor hydraulic hybrid drive, which can select the most reasonable driving method in the respective advantages of the motor and hydraulic pressure to reduce the production cost, improve the production power and improve the machining accuracy.

Automation equipment has the advantages of high efficiency, reduced labor costs, and increased labor productivity. Automated enterprises can purchase similar automation equipment to further reduce costs and take the opportunity to tide over the difficulties under the wave of China's automatic tube bending machine transformation and upgrading. At present, China's fully automatic pipe bending machine enterprises are facing a complicated international situation, and domestic competition is extremely fierce, which makes many enterprises unable to move. So what is the difference between a two-dimensional pipe bender and a three-dimensional pipe bender?

Due to the different users in various industries, the process objects and processes are also different. The construction of CNC numerical control pipe bending machine mainly adopts three methods:

A. Directly adopt embedded CNC system. The advantage is that the degree of freedom of programming is high, and it can be used according to different pipe bending requests, without excessive mechanical intervention, and the program can be used to complete the work, but the programming quality requirements for the personnel are relatively high. Ordinary models do not support the input of elbow XYZ geometric coordinate data.

B. Control mode separated by programmable controller PLC, position/speed control unit, touch screen and AC servo drive unit. PLC ladder diagram, STL programming control the organic separation of the position/speed unit and the touch screen, directly input the bending process data, and support the conversion of the elbow XYZ geometric coordinate data to the elbow YBC processing data. PLC hardware has high reliability, strong anti-interference, easy to maintain and re-develop software.

C. Industrial grade computer, servo motion control board, AC servo unit, system software is completed by C language or VB visual program, which can make full use of computer resources diversity and functionality, can be used for complex motion processes, mechanical trajectories, etc. Applications such as complex mechanical structures. In addition to the functions of the second method, it also increases the utility of pipe processing machinery intervention. The reliability of the hardware is slightly lower than that of the PLC system. It adopts the control mode of PLC, position/speed control unit, touch screen and AC servo drive unit. The designed system has two modes: manual and automatic operation. In the automatic mode, it can be divided into step-following bending and origin-string bending, which is convenient for processing a variety of complex pipe fittings.

Regarding the pipe fittings with different bending radii, the upper and lower die switching is used to complete the processing of the pipe bending operation. For the bending of the pipe fittings for special machining requests, actions such as linkage, synthesis and corresponding auxiliary pushing are designed to prevent mechanical intervention and complete the automation of the pipe bending process. Automatically cooperate with the automatic loading and unloading machine to realize unmanned automatic production, achieve automatic production in the true sense, low dependence of automatic equipment on people, realize intelligent production, information exchange compatibility, workshop, office, leadership, The quality of the product has been further leapfrogged by the entire production process.

Wonsten specializes in the production, CNC tube bending machine, automatic tube bending machine and other equipment, the company abides by: "quality first, customer first, integrity-based" business philosophy, sincerely welcome new and old customers to visit We will provide you with a full range of services.