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Problems caused by heating of hydraulic system of crimping machine

Problems caused by heating of hydraulic system of crimping machine The oil pump is installed in the oil tank and immersed in the hydraulic oil to achieve the purpose of scientific heat dissipation and mute design. The oil pump is driven by the motor to output hydraulic oil and push the plunger in the withholding cylinder to move, causing the mold base to shrink radially, realizing the mold to the hose joint cover Squeeze. When the shrinkage reaches the preset value of the micrometer, the extrusion stops automatically. After the electromagnetic reversing valve changes the direction, the plunger in the cylinder moves in the opposite direction, the mold opens, and the hose is crimped. In the hydraulic system of the crimping machine, due to the different flow rates of the hydraulic oil in the flow process, there is a certain internal friction inside the liquid, and there is also friction between the liquid and the inner wall of the pipeline. These are the reasons for the increase in the temperature of the hydraulic oil. . Heat generation is an inherent feature of hydraulic systems, which cannot be eradicated and can only be reduced as much as possible. The increase in oil temperature of the hydraulic system will increase internal and external leakage and reduce its mechanical efficiency. An increase in temperature will cause the internal expansion of the hydraulic oil, resulting in an increase in compressibility and a weakening of the output power, so that the control action cannot be transmitted well. The long-term high temperature of the hydraulic system will accelerate the aging of the internal seals of the machine, and system leakage caused by the aging and damage of the internal seals is easy to occur, resulting in the power loss of the crimping machine, and the crimping pressure is greatly reduced. The motor does not rotate after the tube press is energized 1. Check whether the power switch is off. 2. Check whether the contactor is closed. 3. Check whether the fuse is blown. 4. Check whether the thermal relay is disconnected.

11-10

2021

Problems caused by heating of hydraulic system of crimping machine
Problems caused by heating of hydraulic system of crimping machine

Which crimping machine is of better quality?

Which crimping machine is of better quality? The crimping machine has the advantages of small size, light weight, compact structure, simple operation, advanced oil circuit design, high efficiency, and reliable performance. It has the advantages of manual crimping, semi-automatic crimping, fully automatic crimping, and adjustable crimping speed. The crimping machine is especially suitable for engineering Mechanical repair shops, hose assembly production plants, hydraulic hose retail stores, etc. Efficient In order to improve the production efficiency of the tube shrinking machine, more and more clamp products are available for double-sided, four-sided and multi-piece clamping. In order to reduce the installation time of the workpiece, various automatic centering clamping, precision flat-nose pliers, lever clamping, cam clamping, pneumatic and hydraulic clamping, etc., fast clamping functional components are constantly being introduced. The new electronically controlled permanent magnet clamp only takes 1 to 2 seconds to tighten and loosen the workpiece. The structure of the clamp is simplified, which creates conditions for the multi-station, multi-face and multi-piece processing of the tube shrinking machine. In order to shorten the time for installing and adjusting the clamp on the tube shrinking machine, the Swedish 3R clamp only takes 1 minute to complete the installation and calibration of the wire cutting tube shrinking machine clamp. Using the ball lock clamping system of the American Jergens company, the fixture can be positioned and locked on the workbench of the shrinking machine within 1 minute. The ball lock clamping system is used to replace the fixture on the flexible production line. Reduce downtime and improve production efficiency. The products on the market are good or bad, and so are the crimping machines. So when buying crimping machines, how do you choose high-quality crimping machines? Here, the crimping machine manufacturers recommend three tips to everyone. Helped. Look: Observe visually whether the hydraulic accessories and electrical components selected by the crimping machine are brand-name products or are produced by regular manufacturers; whether the circuit configuration is regular; whether the design of the oil station pipeline is reasonable; whether there is oil leakage at the connection. If the above passes the visual inspection, you can proceed to the next step. Listen: Turn on the device after connecting it to the power supply, and listen to whether the device's operating sound is normal. If there is abnormal noise, it is often caused by the installation coaxiality of the motor and the oil pump. Another possibility is caused by the unreasonable selection of the oil pump displacement and pipe diameter, and the quality of the selected motor or oil pump. Not very well caused. Measurement: Finally, the main parameters of the equipment are measured Keep the crimping machine equipment in a dry running state, touch each module block with your hand, and there should be no jitter in the hand, otherwise it will be regarded as a substandard product. Install the crimping machine equipment on the mold, crimp a sample joint, measure the crimping joint with a caliper or a micrometer, the roundness and taper should be buckled within 0.1mm, which is considered excellent. Mold base hardness and mold hardness are also the key to the normal use of the equipment in the future. Customers can request manufacturers to use a desktop or portable hardness tester to test the mold base or mold. When the hardness of the mold base is lower than Rockwell HRC60 and the mold hardness is lower than Rockwell HRC50, it will affect the withholding quality of the hose.

11-09

2021

Which crimping machine is of better quality?
Which crimping machine is of better quality?

Faults and troubleshooting methods of crimping machine

Faults and troubleshooting methods of crimping machine 1. When the machine is used for the first time, it should be withheld for 20 to 30 times, and it can be used after investigating that all parts are normal. The pipe locking machine should be crimped 20-30 times without load in winter to increase the oil temperature. 2. Press the mold opening button to open the mold base. Select the corresponding mold device on the mold base and adjust the scale of the ruler according to the standard of the hose to be crimped. (See the technical parameter reference table for details) 3. Press the mold opening button and take out the crimped hose assembly. Use a vernier caliper to detect the outer diameter of the crimped pipe sleeve. If the crimped diameter does not match the parameter table, fine-tune the scale of the ruler and repeat the above operation until it meets the requirements and stops. 4. Put the rubber tube with the joint in the proper position in the lock, so that the whole length can be crimped at one time. 5. Press the crimping button to perform the crimping operation until the lock head stops crimping. Debugging of steel pipe crimping machine Transfer: The machine should be transferred by a forklift, and the bottom of the machine should be stressed, and the body should not be skewed. It is forbidden to lift the lock and the ruler. Device: The machine needs to be fixed horizontally on a stable foundation and grounded. Oil filling: Turn over the casing and add 60 liters of No. 46 anti-wear hydraulic oil in the oil tank. Electricity connection: connect the power cord to the power supply specified by the machine, and jog the motor to check the direction of rotation. The direction of rotation of the motor should be consistent with the direction indicated by the oil pump. Pressure adjustment: The pressure of the machine system is 30Mpa, which is adjusted by the overflow valve. Adjust the pressure clockwise to increase, and adjust counterclockwise to decrease the pressure. (It has been adjusted at the factory, and can be adjusted by itself if necessary)

11-08

2021

Faults and troubleshooting methods of crimping machine
Faults and troubleshooting methods of crimping machine

How to use the crimping machine correctly?

How to use the crimping machine correctly? Add 46# hydraulic oil 50kg (preferably genuine original oil) into the crimping machine and pipe pressing machine before starting up.　　 Connect the power supply. If you are using a three-phase motor, be careful not to connect it in the reverse direction.　 After the above procedures are completed, you can start the pressure test.　　 The use of crimping machine and pipe pressing machine positioner: 1mm more than 1mm per back rotation, 0.01mm per forward rotation, and so on, the same specification of hoses and joints, the first metal joint to reach the required pressure, no need Move the positioner again to press the specification all the time, and the result of the compression data is exactly the same. When you finish the pressure test of the first tubing, you have learned it, and the rest is gradually becoming proficient. (1) Add enough 32-46# hydraulic oil 50kg at one time (preferably genuine original oil) (2) Positioner installation: first insert the positioner into the front of the machine head (note: the positioner can be directly inserted into the machine head), and insert the other end plug into the corresponding socket inside the electric control box (3) Connect the power supply. If you are using a three-phase motor, be careful not to connect it in the reverse direction. (4) After the above procedures are completed, you can start the pressure test (5) The use of the positioner: press 1mm more per half circle of reverse rotation, 1mm less per half circle of forward rotation, and so on, the same specification hose and joint, the first hose joint reaches the required pressure, no need to move the positioning After pressing this specification all the time, the compressed data is completely consistent. When you test the first hose, you have learned it, and the rest is gradually becoming proficient.

11-08

2021

How to use the crimping machine correctly?
How to use the crimping machine correctly?

What is the role of the hydraulic oil used in the hose crimping machine

What is the role of the hydraulic oil used in the hose crimping machine Hydraulic oil is the blood of the hose crimping machine equipment, which has the effect of transferring and transforming energy. The accuracy of the selection of hydraulic oil is closely related to the operating power and service life of the equipment. Its functions are mainly manifested in the following points. Today's crimping machine technology Let's analyze it: 1. Appropriate viscosity, viscosity-temperature characteristics Viscosity is the primary consideration when selecting hydraulic oil. Under the same operating pressure, if the viscosity is too high, the movement resistance of hydraulic components will increase, and the pipeline pressure drop and power loss will increase; if the viscosity is too low, the volume of the added oil drum will be lost. The leakage in the assembly increases and the oil film of the sliding parts becomes thinner, so that the support can be lowered, and there is a foggy phenomenon, which overflows from the exhaust port. 2. Lubricity (wear resistance) There are many moving parts in the hydraulic system that need to be lubricated to avoid the wear of the relative moving surface, especially the hydraulic equipment with higher pressure, which requires much higher anti-wear properties of the hydraulic oil. 3. Antioxidant The hydraulic oil is also oxidized during use. The acidic substance generated after the hydraulic oil is oxidized will add corrosiveness to the metal. The generated sludge deposits will block the filter and fine gaps and make the equipment work abnormally. Therefore, it is requested to have Antioxidant. 4. Anti-rust and anti-corrosion When hydraulic oil is in use, it is inevitable to touch moisture and air, as well as acidic substances generated after oxidation, which will affect the corrosion of the metal valve core.

11-07

2021

What is the role of the hydraulic oil used in the hose crimping machine
What is the role of the hydraulic oil used in the hose crimping machine

How to use the crimping machine correctly?

How to use the crimping machine correctly? Add 46# hydraulic oil 50kg (preferably genuine original oil) into the crimping machine and pipe pressing machine before starting up.　　 Connect the power supply. If you are using a three-phase motor, be careful not to connect it in the reverse direction.　 After the above procedures are completed, you can start the pressure test.　　 The use of crimping machine and pipe pressing machine positioner: 1mm more than 1mm per back rotation, 0.01mm per forward rotation, and so on, the same specification of hoses and joints, the first metal joint to reach the required pressure, no need Move the positioner again to press the specification all the time, and the result of the compression data is exactly the same. When you finish the pressure test of the first tubing, you have learned it, and the rest is gradually proficient. (1) Add enough 32-46# hydraulic oil 50kg at one time (preferably genuine original oil) (2) Positioner installation: first insert the positioner into the front of the machine head (note: the positioner can be directly inserted into the machine head), and insert the other end plug into the corresponding socket inside the electric control box (3) Connect the power supply. If you are using a three-phase motor, be careful not to connect it in the reverse direction. (4) After the above procedures are completed, you can start the pressure test (5) The use of the positioner: press 1mm more for each half of the reverse rotation, 1mm less for each half of the forward rotation, and so on, the same specification hose and joint, the first hose joint reaches the required pressure, no need to move the positioning After pressing this specification all the time, the compressed data is exactly the same. When you test the pressure on the first hose, you have learned it, and the rest is gradually becoming proficient.

11-06

2021

How to use the crimping machine correctly?
How to use the crimping machine correctly?

Analyze the precautions and maintenance of the hose crimping machine

Analyze the precautions and maintenance of the hose crimping machine The hose crimping machine, commonly known as crimping machine or pipe crimping machine, is a kind of hydraulic equipment used to crimp the assembly of hydraulic oil pipe joints. The metal joint is firmly crimped on the matched hydraulic oil pipe and rubber hose. The hose crimping machine is suitable for the withholding of various mechanical high-pressure hoses, hydraulic hoses, air pipes, water pipes, cable joints, and air-conditioning pipes. It is widely used in vehicles, construction machinery, coal mines, hydraulic equipment, household appliances, welding and cutting equipment, Tianjin trash cans, Envelope reducer, IKO bearings, nsk bearings, SKF bearings, TIMKEN bearings, FAG bearings and other industries. Precautions: 1. When crimping, place the joint in the center of the mold as much as possible, and do not press on the hexagonal nut. 2. Prevent tools and other foreign objects from entering the press head. 3. After each work is completed, the eight mold bases must be opened to the maximum extent, so that the spring can be in an open state and the spring can be maintained, and the oil cylinder is also in a pressure relief state to extend the life of the oil seal. Maintenance of pipe press: 1. The hydraulic oil in the oil tank should be replaced when it exceeds the time limit specified by the hydraulic oil manufacturer, or visually check the oil level gauge. If the hydraulic oil is oxidized and darkened, it must be replaced. 2. Frequently inject anti-wear lubricant into the moving surface of the mold base. 3. During non-pressing machine working hours, please cover the dust cover to prevent sundries from falling into the mold base.

11-04

2021

Analyze the precautions and maintenance of the hose crimping machine
Analyze the precautions and maintenance of the hose crimping machine

Faults and troubleshooting methods of crimping machine

Faults and troubleshooting methods of crimping machine When using the machine for the first time, it should be withheld for 20 to 30 times, and it can be used after investigating that all parts are normal. The pipe locking machine should be crimped 20-30 times without load in winter to increase the oil temperature. Press the mold opening button to open the mold base. Select the corresponding mold device on the mold base and adjust the scale of the ruler according to the standard of the hose to be crimped. (See the technical parameter reference table for details) Press the mold opening button and take out the crimped hose assembly. Use a vernier caliper to check the outer diameter of the crimped pipe sleeve. If the crimped diameter does not match the parameter table, you should fine-tune the scale of the ruler and repeat the above operation until it meets the requirements. Put the hose with the joint in the proper position in the lock, so that the entire length is crimped at one time. Press the crimping button to perform the crimping operation until the lock head stops crimping. Debugging of steel pipe crimping machine 1. Transfer: The machine should be transferred by a forklift, and the bottom of the machine should be stressed, and the body should not be skewed. It is forbidden to lift the lock and the ruler. 2. Device: The machine must be horizontally fixed on a stable foundation and grounded. 3. Oil filling: Turn over the casing and add 60 liters of No. 46 anti-wear hydraulic oil in the oil tank. 4. Connect to electricity: connect the power cord to the power supply specified by the machine, and jog the motor to investigate the direction of rotation. The direction of rotation of the motor should be consistent with the direction indicated by the oil pump. 5. Pressure adjustment: The pressure of the machine system is 30Mpa, which is adjusted by the overflow valve. Adjust the pressure clockwise to increase, and adjust counterclockwise to decrease the pressure. (It has been adjusted at the factory, and can be adjusted by itself if necessary) 6. Adjustment of mold opening speed: The speed of mold opening speed is controlled by the diverter valve. It is adjusted clockwise. The mold opening speed is accelerated and counterclockwise adjusted. (It has been adjusted at the factory, and can be adjusted by itself if necessary).

11-03

2021

Faults and troubleshooting methods of crimping machine
Faults and troubleshooting methods of crimping machine

Common faults in the use of hose crimping machine

Common faults in the use of hose crimping machine The development of crimping machine is relatively late. There are nearly dozens of crimping machine manufacturers in China (mostly private, individual, joint-stock and private small workshop enterprises), and the annual market demand is large, which basically meets the domestic market demand, and the imported products are not enough for the total market. 5% of the total, while the number of export products is increasing day by day. The hose crimping machine itself may have some problems during its use. These problems may only damage itself, and may also affect the safety of the hose crimping assembly. So what are the common faults? ? 1. Rust and corrosion. The hose crimping machine itself is made of metal. Damage to the outer anti-rust layer, prolonged rain, direct contact with corrosive substances, etc., may cause rust and abnormal corrosion. 2. The hose assembly crimped by the hose crimping machine has an oil leakage failure. This failure may be due to the problem of the hose and the joint itself, or it may be due to the cutting size problem, of course, it may also be due to the quality of the crimping machine itself. 3. The assembly crimped by the hose crimping machine is easy to loosen. This may be caused by unqualified crimping dimensions or loosening of crimping components of the crimping machine.

10-30

2021

Common faults in the use of hose crimping machine
Common faults in the use of hose crimping machine
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