CN206445268U - Cold shears locking cylinder system - Google Patents

Abstract

The utility model is a cold shear locking cylinder system, which solves the problem of inconvenient maintenance after the oil circuit of the existing cold shear locking cylinder is damaged, including a cold scissor frame and four upper locking cylinders and four lower locking cylinders with the same structure. Cylinders, the cylinders of the upper locking cylinder and the lower locking cylinder are equipped with piston rods, one end of the piston rod is connected with a piston for sealing oil, and the other end of the piston rod is connected with a cold scissors frame through a pressing block, and the cold scissors frame includes The upper knife rest and the lower knife rest, the upper knife rest is connected with the upper locking cylinder, the lower knife rest is connected with the lower locking cylinder, the piston and the locking cylinder are sealed to form a hydraulic cavity, and the hydraulic cavity is connected to the rubber tube through a long joint One end of the rubber tube is connected to a hydraulic pump station at the other end. The utility model has a simple structure, the oil supply mode is the oil inlet from the side of the oil cylinder, and the oil port joint is a rubber tube, which saves most of the parts such as tees and elbows, improves the reliability of the oil circuit, and does not need to be repaired. Disassembly and assembly saves time and reduces maintenance intensity.

Description

Cold shear locking cylinder system

technical field

The utility model relates to the field of hydraulic equipment, in particular to a cold shear locking cylinder system.

Background technique

The cold shearing machine is generally arranged behind the cooling bed, which is an indispensable equipment for the online production of wire and bar. The knife holder is installed on the cold shear body, the upper knife holder and the lower knife holder are respectively equipped with blades, the main motor is connected to the reducer through a gear coupling, and the reducer is connected to the cold shear body through another gear coupling. The cold shear crankshaft is connected, and the other end of the cold shear crankshaft is connected with the upper tool holder. The main motor drives the cold shear crankshaft to move up and down through the reducer, so that the upper knife rest and the upper blade on the upper knife rest move up and down and the lower blade completes the shearing action. With the development of science and technology, the cold shearing equipment has been relatively mature. The oil supply of the existing cold shearing locking cylinder is oil from the bottom of the cylinder and all of them are connected by hard pipes. There are many tee joints and right angle elbows when connecting, and all the used They are all hydraulic joints with sealing gaskets, so that there are more parts in the whole equipment, but the reliability of the equipment is poor.

Due to the large shearing force of the cold shearing machine, after a period of use, the oil leakage of the upper tool holder locking system will occur. The hydraulic oil leaks from the cold shearing body in a linear manner, making the hydraulic pressure When the pressure is lower than the working pressure, it will be difficult to open the locking cylinder, which not only affects the efficiency of blade replacement, but also easily leads to serious oil pollution on the production site.

On the other hand, the oil circuit interface of the tool holder on the cold shear machine is connected with a ring seal. Due to the high temperature of the working environment and the time, the seal ring is prone to aging and damage. Once the oil circuit is damaged, it is necessary to remove the door panel of the equipment and use the swing frame to lift it out to repair the oil circuit, and the maintenance work will almost dismantle the entire equipment body into parts, and the lifting equipment is heavy, and the production site lacks sufficient dismantling facilities. Install equipment, increase maintenance man-hours, delay production progress, and affect output.

Contents of the invention

The utility model provides an oil supply system for the cold shear locking cylinder in order to solve the problem of inconvenient maintenance after the oil passage of the existing locking cylinder of the cold shear machine is damaged.

The utility model is realized through the following technical solutions: a cold shear locking cylinder system, including a cold scissor frame and four upper locking cylinders and four lower locking cylinders with the same structure, the upper locking cylinder and the lower locking cylinder Piston rods are installed in the cylinder barrel of the cylinder, one end of the piston rod is connected with a piston that seals oil, and the other end of the piston rod is connected with a cold scissors frame through a pressing block. It is connected with the upper locking cylinder, the lower knife rest is connected with the lower locking cylinder, and the piston and the locking cylinder are sealed to form an oil pressure chamber. The oil pressure chamber is connected to one end of the rubber tube through a long joint, and the other end of the rubber tube is connected to a hydraulic pressure chamber. pumping station.

The piston rod passes through the middle of the pressing block, and a nut is sheathed at one end of the piston rod passing through the pressing block.

A compression spring is installed between the piston and the pressing block. Thereby, the elastic force of the compression spring can be used to facilitate the locking and releasing of the cold scissor holder device.

The rubber tubes arranged on the upper locking cylinder and the lower locking cylinder are respectively connected with the hydraulic pump station.

One end of the piston rod used for fixing with the cold scissor stand device is provided with a pressing block, the piston rod passes through the pressing block, and the end of the piston rod passing through the pressing block is provided with a nut. Through the cooperation of the external thread of the piston rod and the nut, the pressing block is fixed, so that the cold scissors device is fixed, and then locked by the steel cold scissors locking system of the utility model, thereby completing the installation of the cold scissors device. When it is necessary to remove the cold scissors device, the pressing block can be removed through the cooperation of the external thread of the piston rod and the nut, and further, the locking system of the steel cold scissors device of the utility model is released, so that the cold scissors device can be disassembled. Down.

The utility model modifies the oil supply system of the original locking cylinder, saves the hard pipeline originally installed on the upper locking cylinder and the lower locking cylinder, directly replaces it with a pressure-resistant rubber tube, and changes the rubber The oil inlet direction of the pipe is so that it enters from the side through the long joint. Once the pressure is unstable or the oil leaks, it can be solved directly by replacing the rubber pipe, which saves a lot of time and energy. At the same time, the rubber pipe can effectively Avoid thermal expansion and contraction from affecting welded and formed hard hydraulic pipelines.

The utility model has the advantages of simple structure and reasonable design, the oil supply mode is the oil inlet from the side of the oil cylinder, and the oil port joint is a rubber tube, which saves most of the parts such as tees and elbows, and improves the reliability of the oil circuit. It is flexible and does not need to be disassembled and assembled during maintenance, as long as the hose is replaced outside the equipment, which reduces the maintenance intensity, saves maintenance man-hours, and reduces production costs.

Description of drawings

Fig. 1 is the locking structure schematic diagram of cold shearing machine;

Fig. 2 is a structural schematic diagram of the utility model.

In the figure: 1-upper locking cylinder, 2-lower locking cylinder, 3-piston rod, 4-piston, 5-long joint, 6-compression spring, 7-rubber tube, 8-press block, 9-nut, 10- Cold scissor stand.

detailed description

The utility model is further described in conjunction with Fig. 1-2. A cold shear locking cylinder system includes a cold scissor frame and four upper locking cylinders 1 and four lower locking cylinders 2 with the same structure, and the upper locking cylinder 1 The piston rod 3 is arranged in the cylinder barrel of the lower locking cylinder 2, and one end of the piston rod 3 is connected with a piston 4 for sealing oil, and the other end of the piston rod 3 is connected with a cold scissor frame 10 through a briquetting block 8, and a cold scissor frame 10 Including the upper tool holder and the lower tool holder, the upper tool holder is connected with the upper locking cylinder 1, the lower tool holder is connected with the lower locking cylinder 2, the piston 4 and the locking cylinder form a hydraulic cavity, and the hydraulic cavity passes through The long joint 5 is connected to one end of the rubber tube 7, and the other end of the rubber tube 7 is connected to a hydraulic pump station.

The piston rod 3 passes through the middle of the pressure block 8 , and the end of the piston rod 3 passing through the pressure block 8 is sleeved with a nut 9 . A compression spring 6 is installed between the piston 4 and the pressing block 8 . The rubber tubes 7 arranged on the upper locking cylinder 1 and the lower locking cylinder 2 are respectively connected with the hydraulic pump station.

When working, the pressing block 8 is fixed through the cooperation of the external thread of the piston rod 3 and the nut 9, so that the cold scissors frame 10 is fixed, and then locked by the steel cold scissors frame locking system of the utility model, thereby completing the cold scissors frame 10 installation. When it is necessary to remove the cold scissors frame 10, the external thread of the piston rod 3 and the nut 9 can be used to remove the briquetting block 8. Further, the locking system of the steel cold scissors frame of the utility model is released, so that the cold scissors Frame 10 is removed.

In addition, the cold shear locking cylinder system of the utility model reforms the existing locking cylinders, eliminating the hard pipelines originally installed on the upper locking cylinder 1 and the lower locking cylinder 2, and directly replacing them with durable Press the rubber tube 7, and change the oil inlet direction of the rubber tube 7, so that it enters from the side through the long joint 5. Once the cold shear machine has unstable pressure or oil leakage, it is not necessary to check the leak point of the hydraulic pipeline. The investigation can be solved directly by replacing the rubber tube 7, which saves a lot of time and energy. At the same time, the use of the rubber tube 7 can effectively avoid the impact of thermal expansion and contraction on the welded hard hydraulic pipeline.

Claims (4)

1. A cold shear locking cylinder system, including a cold scissor frame and four upper locking cylinders (1) and four lower locking cylinders (2) with the same structure, characterized in that: the upper locking cylinder (1) A piston rod (3) is installed in the cylinder barrel of the lower locking cylinder (2), and one end of the piston rod (3) is connected to a piston (4) that is sealed with oil, and the other end of the piston rod (3) passes through the pressure block (8 ) is connected with the cold scissor frame (10), the cold scissor frame (10) includes the upper knife frame and the lower tool frame, the upper tool frame is connected with the upper locking cylinder (1), and the lower tool frame is connected with the lower locking cylinder (2) , the piston (4) and the locking cylinder form an oil pressure cavity, the oil pressure cavity is connected to one end of the rubber tube (7) through a long joint (5), and the other end of the rubber tube (7) is connected to a hydraulic pump station. 2. The cold shear locking cylinder system according to claim 1, characterized in that: the piston rod (3) passes through the middle of the pressing block (8), and the piston rod (3) passes through one end sleeve of the pressing block (8) A nut (9) is provided. 3. The cold shear locking cylinder system according to claim 1 or 2, characterized in that a compression spring (6) is installed between the piston (4) and the pressing block (8). 4. The cold shear locking cylinder system according to claim 1, characterized in that: the rubber tubes (7) provided on the upper locking cylinder (1) and the lower locking cylinder (2) are respectively connected to hydraulic pump stations.