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Shanghai Hufeng Machinery participated in the high-strength steel bar technology exchange meeting

Shanghai Hufeng Machinery participated in the high-strength steel bar technology exchange meeting

Zhang Aiqin, general manager of our company, gave a keynote speech on the development trend of steel bar mechanical rolling straight thread forming machine, and comprehensively introduced rolling straight thread, direct rolling straight thread forming machine, shaping straight thread forming machine, rib stripping straight thread forming The characteristics and application of the machine; according to the industry standard of "sleeves for mechanical connection of steel bars" will be promulgated and implemented, further standardize the production of steel bar straight thread sleeves and improve the quality and efficiency of straight thread sleeves, the degree of automation and the improvement of steel bar straight thread At the same time, in order to reduce the labor intensity and improve the safety of production in the production process of steel bar straight thread sleeves, to create a better series of special equipment in China and to improve the degree of mechanical automation, our company has developed horizontal and vertical The advanced automatic sleeve tapping machine greatly improves the production efficiency. This speech was unanimously affirmed by the participants, and many representatives had in-depth exchanges and discussions with Mr. Zhang. After the meeting, the participating representatives collectively visited the steel bar straight thread rolling machine produced by our company, the newly developed automatic sleeve tapping machine and the fully automatic outer circle chamfering lathe, and exchanged and learned professional technical issues. Finally, Lai Zhiyong, chairman of our company, was named the vice-chairman of the China Construction Machinery Industry Association Reinforcement and Prestressed Machinery Branch, and Shanghai Hufeng Machinery Co., Ltd. was named the vice-chairman unit of the China Construction Machinery Industry Association Reinforcement and Prestressed Machinery Branch. And came to the stage to commend and affirm. After the meeting, the representatives of the meeting said that through this meeting, they have further strengthened their understanding of mechanical connections, are more confident in the prospects of the industry's development, have strengthened communication with upstream and downstream enterprises, and hope that the association will hold more similar exchange activities to broaden the horizons. vision.

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Anti-loosening method for steel bar connection sleeve fasteners

Shanghai Hufeng Machinery Co., Ltd. specializes in the production of steel bar straight thread sleeves, with cheap prices, good quality, and complete qualifications. The following is an introduction to the anti-loosening method of the fasteners of the steel bar connection sleeve. Friction and anti-loosening It is the most widely used anti-loosening method. This method generates a positive pressure that does not change with the external force between the thread pairs to generate a frictional force that can prevent the relative rotation of the thread pairs. This positive pressure can be achieved by pressing the thread pair axially or simultaneously in two directions. Such as the use of elastic washers, steel connection sleeves, self-locking nuts and nylon insert lock nuts, etc. This anti-loosening method is more convenient for the disassembly of the nut, but in the case of shock, vibration and variable load, the pre-tightening force of the bolt will decrease due to relaxation at the beginning, and the lost pre-tightening force will increase slowly with the increase of the number of vibrations. Eventually, the nut will loosen and the threaded connection will fail. Mechanical anti-loosening The relative rotation of the thread pair is directly restricted by the stopper. For example, cotter pins, series steel wires and stop washers are used. Since the stopper has no pre-tightening force, the anti-loosen stopper can only work when the nut is loose and retreats to the stop position. Therefore, this method does not actually prevent loosening but prevents falling off. Riveting and anti-loosening After tightening, punching, welding, bonding and other methods are used to make the thread pair lose the characteristics of the kinematic pair and the connection becomes a non-detachable connection. The disadvantage of this method is that the bolt can only be used once, and it is very difficult to disassemble. The bolt pair must be destroyed before disassembly. Structure anti-loosening It uses the structure of the thread pair itself, that is, the Down's thread anti-loosening method.

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Production principle of steel bar connection sleeve

Shanghai Hufeng Machinery Co., Ltd. specializes in the production of steel bar joints, steel bar straight thread sleeves, and steel bar connectors. It has complete qualifications, and its tensile strength has reached the national first-class standard. Welcome to consult and negotiate.

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The concept and performance of rib stripping and rolling machine

The steel bar stripping and rolling machine is mainly used for rolling the straight thread thread head of the ribbed steel bar in construction engineering. It is the key equipment to realize the straight thread connection of the steel bar. The processing tooth shape is full and the dimensional accuracy is high. Machinable Positive and reverse screw thread. This type of machine tool is easy to operate, compact in structure, reliable in operation, and has a unique mechanism for automatic opening and closing of tools. It can process HRB335 and HRB400 ribbed steel bars of Φ 16-40mm. Steel bar stripping and thread rolling machine, that is, without processing the vertical and horizontal ribs of steel bars, one-time axial feed can be directly rolled into wire heads, and the end of the steel bar can be axially fed once, and the ribs are first cut and removed by the cutting head , continue to feed and then use the rolling head to roll into a thread The rolling machine tool. The new technology is adopted to make the structure, cutting and rolling speed reasonable, which improves the processing quality and prolongs the tool life. It realizes oil-free lubrication and facilitates the replacement and maintenance of wearing parts. The thread is smooth and standard, the machine tool is easy to operate, and the Reliable operation, adjustable rolling specifications, cutting head with automatic knife raising and retracting device, flexible and reliable, and can realize automatic stop when the length of wire head is set according to the specification. After manually pressing the reversing button, reversing and returning away from the workpiece, use the time difference of hand reversing button to realize delay Hourly function, it will stop automatically when it is shaken to the "0" position. This machine tool adopts an internal cutting fluid supply device, which has better cooling and lubricating effects. To process a steel bar of one specification, it only needs to set up the machine tool once and start the switch once to continue processing. It simplifies and overcomes the repetitive operation steps of general thread machine tools, reduces labor intensity and greatly improves work efficiency. The machine tool is equipped with an emergency stop device. In any case, press the emergency stop button to stop the power supply, effectively ensuring the safety of personnel and equipment Shanghai Hufeng Machinery Co., Ltd. specializes in the production of rib stripping and rolling machines for steel bars. The price is reasonable, the operation is simple, the efficiency is high and the life is long. Welcome new and old customers to consult and negotiate. Tel 13761651678

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Working principle of rib stripping and rolling machine

1. Rebar clamping structure Rebar clamping is accomplished by using the positive and negative thread screw to drive the clamp body to slide and self-center. 2. Thread head processing: The steel bar is clamped, and the stripping thread rolling head rotates and feeds axially to complete the thread processing. The rotation of the rib stripping and rolling head is completed by the main motor at a speed of 50 rpm through the reducer. The feed is completed by the operator pulling the handle through the gear and rack to drive the reducer and rib stripping thread rolling head to move along the slide bar. 3. Thread rolling wheel: The rolling thread rolling wheel is composed of three parts, which can be installed interchangeably, and the rolling thread is formed at one time. 4. Advance and retreat Turn on the main motor button, the motor drives the reducer and rib stripping thread rolling head to rotate, the operator pulls the handle to feed, when the thread processing is completed, the travel switch touch plate presses the travel switch button, reverses and returns to the initial position after a delay Automatic shutdown. Steel bar straight thread rolling machine is a kind of steel bar processing machine widely used in construction industry in recent years. It quickly and directly rolls the end of the steel bar at one time to cause cold hardening at the head of the threaded wire, thereby improving the strength and making the steel wire head the same as the base material. It consists of a frame, a clamping mechanism, a feed carriage, a reducer, a thread rolling head, a cooling system, and an electrical system. Thread rolling machines such as thread head go-stop ring gauges and length gauges use cutting and rolling threads for one-time forming to achieve the purpose of reinforcement and thread processing at the end of the steel bar, and solve the problem of pretreatment of the end of the steel bar before processing. , and the problem that similar equipment needs to be rolled many times, which reduces the process of processing and multiple steel bar handling on site, and improves the efficiency of on-site production and processing; the thread rolling machine can use one thread rolling head to realize rolling of various specifications of steel bars processing, which solves the situation that similar equipment needs one thread rolling head for each specification when processing straight threads at the ends of steel bars. The thread rolling machine adopts internal cooling liquid, which solves the problem of chip removal during rolling processing. It has high automation intensity, and it automatically stops when feeding and resets. Rib stripping straight thread rolling machine for steel bar is a special equipment for processing straight thread head of steel bar. The end of steel bar is stripped round by rib stripping knife, and then three hollow thread rolling wheels are used to roll the straight thread of steel bar, so as to achieve the straight thread of steel bar. Quality requirements for thread forming. Make the ribbed steel bar straight thread connection meet the A-level connection standard requirements of JGJI07-2003 "General Technical Regulations for Mechanical Connection of Reinforcement". The thread rolling machine is added with nine kinds of steel bars of Φ16-Φ40mm in GB1499-1998 "Hot-rolled Ribbed Steel Bars for Reinforced Concrete"

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Classification and advantages of steel bar straight thread rolling machine

Classification and advantages of steel bar straight thread rolling machine Steel bar straight thread rolling machine is the key equipment used for rolling straight thread head of ribbed steel bar in construction engineering to realize straight thread connection of steel bar. It can complete rib stripping and rolling thread processing in one clamping. The steel bar processed by the straight thread rolling machine can be used with the straight thread Threaded metal fibers are closely connected together and have good mechanical properties. It can increase the tensile strength by 20%-30%, the fatigue resistance by 40%-60%, and the corrosion resistance by 50%-200%. The steel bar processed by the straight thread rolling machine has high connection strength and performance. Based on the base material of the steel bar, the mechanical properties of the steel bar joint meet and exceed domestic and foreign standards. Because the most commonly used thread on the market is to process steel bars with a diameter of 16-40, which is the most common DBG-40B. This kind of price is relatively affordable, and it is also the most commonly used model. The length of the processed thread can reach 90mm, which can generally meet the normal use of current construction sites. The DBG-40C steel bar rib stripping and rolling straight thread machine tool produced by Shanghai Hufeng Machinery Co., Ltd. is mainly used for the processing of ribbed steel bar rolling straight thread heads in construction engineering. It is the key equipment to realize the connection of steel bars. HRB335—HRB500 grade ribbed steel bar. The length of processed thread can reach 100mm, and the machine tool can complete ribbed and rolled thread processing of steel bar in one clamping. The processed steel thread is completely higher than the 6f level accuracy requirement of JGJ107-2010. The model is not only compact in structure, easy to operate, safe and reliable, but also has a unique stepless adjustment structure of rib stripping device and roller device. The straight thread rolling machine can also process standard thread, reverse thread and long thread. DBG-50 type steel bar straight thread rolling machine has an innovative head structure design, adopts straight axis stepless circulation adjustment, effectively reduces the loss of thread rolling wheel, three points and one line, high concentricity and strong stability. The profile of processed thread is full and smooth. The added wire length reaches 120mm, which almost meets the needs of all industrial and civil engineering steel bar mechanical connection projects in China. The technical characteristics of the steel bar connection sleeve The joint strength meets the performance requirements of A-level joints in the industry standard JGJ107-96. The thread profile is good, the precision is high, and the connection quality is stable and reliable. Wide application range, suitable for diameter 16-40mm. Ⅱ, Ⅲ class steel bar in any direction and position of the same diameter connection. Adjustable type: positive and negative threaded sleeves are suitable for the connection of steel bars that cannot be rotated, such as iron cages. Fast construction speed: thread processing prefabrication and on-site processing, assembly construction. Energy saving, no pollution, safe and reliable construction The steel bar straight thread rolling machine can directly roll and process ordinary ribbed HRB335, HRB400, RRB400~ ribs of specifications such as Φ12, Φ14, Φ1 6, Φ1 8, Φ20, Φ22, Φ25, Φ28, Φ32, Φ36, and medium 40. , It can directly process regular threads without pretreatment such as upsetting and rib stripping of steel bars. The above is Shanghai Hufeng's introduction to the types and uses of steel bar straight thread rolling machines, hoping to bring some convenience to users who purchase this product

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