Strip steel shearing automatic supercharging device of laser gas shielded welding composite welding machine on strip steel production line

Abstract

The utility model discloses an automatic pressurizing device for shearing strip steel of a laser gas shielded welding composite welding machine on a strip steel production line, which relates to the technical field of strip steel manufacturing and comprises a pressure measuring joint I, a pressure measuring joint II, a pressure measuring joint III, a pressure measuring hose, a pressure reducing valve, a reversing valve, a hydraulic control lock, a sequence valve I, a sequence valve II and a pressure gauge, the other end is connected with a hydraulic system main oil path through a pipeline and is used for detecting the working pressure of the system in real time; the first pressure measuring connector is installed at the position of a large cavity of the pressure cylinder and used for being connected with a pressure measuring hose and detecting the oil pressure of the position. According to the strip steel production line laser gas shielded welding composite welding machine shearing strip steel automatic pressurizing device, the sequence valve and the pressurizing cylinder are designed, when the thickness of a plate is increased and the standard pressure is not enough to complete shearing, a system can automatically detect and trigger the pressurizing function, the pressure of the shearing oil cylinder is instantly increased through the pressurizing cylinder, the shearing force of the upper shear is increased to 24 MPa, and the shearing efficiency is improved. And the shearing operation can be smoothly finished.

Description

Technical Field

[0001] The utility model relates to the technical field of strip steel manufacturing, in particular to an automatic pressurizing device for shearing strip steel by a laser gas shielded welding composite welder in a strip steel production line. Background Art

[0002] The thickness of steel strip generally ranges from 0.1 to 10 mm. When this requirement arises on a single production line, our standard single-machine welding machines are unable to achieve this wide-span welding requirement. Common welding methods include lap welding, argon shielded welding, and laser welding. Lap welding focuses on separating steel strip into thin and thick sheets, necessitating the development of welding machines specifically tailored to this requirement. Argon shielded welding, with a slow welding speed of 1 m / min, is also a concern. Laser welding, currently applicable to industrial enterprises, limits the thickness of steel strip to 0.1 to 7 mm, and requires high precision from the welding machine, resulting in higher costs.

[0003] In response to these situations, the fiber laser gas shielded welding composite welding equipment has a simple structure and is easy to use. It can quickly heat up through the laser, speeding up the welding speed of argon shielded welding, and greatly improving the welding efficiency of the strip while ensuring quality. However, the problem that comes with it is that it has to meet the needs of shearing thick plates. Long-term use of high pressure will greatly shorten the service life of the shear cylinder and related transmission structural parts.

[0004] Therefore, the utility model proposes an automatic pressurizing device for shearing strip steel of a laser gas shielded welding composite welding machine of a strip steel production line to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to automatically use or not use a booster device when shearing strip steel of different thicknesses, so as to improve the service life of each mechanism and solve the problems raised in the prior art. An automatic booster device for shearing strip steel by a laser gas shielded welding composite welder in a strip steel production line is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions: the automatic pressurizing device for shearing strip steel of laser gas shielded welding hybrid welding machine of strip steel production line, including pressure measuring joint 1, pressure measuring joint 2, pressure measuring joint 3, pressure measuring hose, pressure reducing valve, reversing valve, hydraulic control lock, sequence valve 1, sequence valve 2, pressure gauge,

[0007] One end of the pressure measuring hose is connected to a pressure gauge, and the other end is connected to the main oil circuit of the hydraulic system through a pipeline, for real-time detection of the working pressure of the system;

[0008] The pressure measuring joint 1 is installed at the large cavity of the booster cylinder and is used to connect the pressure measuring hose and detect the oil pressure at this position.

[0009] Furthermore, the second pressure measuring joint is installed at the rod cavity of the upper scissor oil cylinder, and is used to connect the pressure measuring hose and detect the oil pressure at this position.

[0010] Furthermore, the pressure measuring joint 3 is installed on the oil circuit in front of the sequence valve 2, and is used to connect the pressure measuring hose and detect the pressurization condition of the system.

[0011] Furthermore, the pressure reducing valve is connected in series with the second sequence valve, and is used to reduce the system pressure by controlling the pressure in the oil circuit, and its outlet is connected to the large chamber of the booster cylinder.

[0012] Furthermore, the reversing valve is connected to the hydraulic lock and the sequence valve through a pipeline, so as to control the direction of oil flow and realize the rising and falling movement of the scissors.

[0013] Furthermore, the hydraulically controlled lock is connected to the reversing valve for controlling the flow of oil into and out of the rod chamber of the upper scissor cylinder.

[0014] Furthermore, the sequence valve 1 is installed in the oil return line of the upper scissor cylinder to control the back pressure during the scissor return stroke.

[0015] Furthermore, the second sequence valve is connected in series with the pressure reducing valve, and opens when the system pressure exceeds a set value to control the start-up of the boost cylinder.

[0016] Furthermore, the pressure gauge is connected to the main oil circuit of the hydraulic system through a pressure measuring hose, and is used to display the real-time pressure value of the system.

[0017] Compared with the prior art, the advantages and positive effects of the present invention are:

[0018] 1. Automatic boosting function: The system is designed with a sequence valve and a boosting cylinder. When the thickness of the plate increases and the standard pressure is insufficient to complete the shearing, the system can automatically detect and trigger the boosting function. The boosting cylinder instantly increases the pressure of the shear cylinder, increasing the shearing force of the upper shear to 24MPa, ensuring that the shearing operation can be completed smoothly.

[0019] 2. Pressure stability: Through the design of hydraulic lock and back pressure sequence valve, the system can maintain the stability of hydraulic oil during the shearing process, prevent the unstable scissors movement caused by oil pressure fluctuations, and ensure the smoothness and accuracy of the shearing process;

[0020] 3. Energy-saving design: The system adopts an automatic boosting mechanism based on pressure demand. The boosting cylinder will only be activated when shearing stops or higher pressure is required, avoiding unnecessary energy consumption and achieving energy-saving effects.

[0021] 4. Real-time pressure monitoring: The system is equipped with multiple pressure measuring joints and pressure gauges, which can monitor the pressure status of each key node in real time to ensure the reliability of system operation and provide instant pressure feedback, which is conducive to timely adjustment and maintenance by operators;

[0022] 5. Improved safety: Through reasonable pressure setting and sequence control, the system can automatically adjust the pressure under different working conditions to prevent damage to the equipment caused by overpressure or low pressure, extend the service life of the equipment, and ensure operational safety.

[0023] In summary, the utility model automatically uses or does not use the boosting device when shearing strip steel of different thicknesses, thereby improving the service life of each mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is the principle diagram of the utility model.

[0025] Legend: 1. Pressure measuring joint 1, 12. Pressure measuring joint 2, 13. Pressure measuring joint 3, 2. Pressure measuring hose, 3. Pressure reducing valve, 4. Directional valve, 5. Hydraulic control lock, 61. Sequence valve 1, 62. Sequence valve 2, 7. Pressure gauge. DETAILED DESCRIPTION

[0026] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0028] like Figure 1 As shown, the utility model provides an automatic pressurizing device for shearing strip steel of a laser gas shielded welding hybrid welding machine in a strip steel production line, comprising a pressure measuring joint 11, a pressure measuring joint 2 12, a pressure measuring joint 3 13, a pressure measuring hose 2, a pressure reducing valve 3, a reversing valve 4, a hydraulic control lock 5, a sequence valve 1 61, a sequence valve 2 62, and a pressure gauge 7.

[0029] One end of the pressure measuring hose 2 is connected to the pressure gauge 7, and the other end is connected to the main oil circuit of the hydraulic system through a pipeline, which is used to detect the working pressure of the system in real time;

[0030] The pressure measuring joint 11 is installed at the large cavity of the booster cylinder and is used to connect the pressure measuring hose and detect the oil pressure at this position;

[0031] The second pressure measuring joint 12 is installed at the rod cavity of the upper scissor oil cylinder and is used to connect the pressure measuring hose and detect the oil pressure at this position;

[0032] The third pressure measuring connector 13 is installed in the oil circuit in front of the second sequence valve 62 and is used to connect the pressure measuring hose 2 and detect the pressure increase of the system;

[0033] The pressure reducing valve 3 is connected in series with the second sequence valve 62 and is used to reduce the system pressure by controlling the pressure in the oil circuit. Its outlet is connected to the large chamber of the booster cylinder;

[0034] The reversing valve 4 is connected to the hydraulic lock 5 and the sequence valve 61 through a pipeline, and is used to control the direction of the oil flow to realize the rising and falling movement of the scissors;

[0035] The hydraulic lock 5 is connected to the reversing valve 4 and is used to control the oil flow in and out of the rod chamber of the upper scissor cylinder to ensure that the hydraulic oil does not leak when there is no operation, thereby ensuring the stability of the scissors;

[0036] Sequence valve 161 is installed in the oil return line of the upper scissor cylinder to control the back pressure during the scissor return stroke;

[0037] Sequence valve 2 62 is connected in series with pressure reducing valve 3 and opens when the system pressure exceeds the set value to control the start of the boost cylinder;

[0038] The pressure gauge 7 is connected to the main oil circuit of the hydraulic system through the pressure measuring hose 2 and is used to display the real-time pressure value of the system.

[0039] Working principle: The design pressure of the hydraulic station is 18Mpa. When the plate thickness reaches a certain thickness, 18Mpa is not enough and the pressure needs to be increased. When the pressure oil comes in from the P port, it is energized through the reversing valve 4, and the pressure oil passes through the hydraulic lock 5 to the rod chamber of the upper scissor cylinder. The cylinder moves downward. When the scissors touch the plate strip, the pressure is built up. When the pressure built up exceeds the 17Mpa pressure set by the sequence valve 2 62, the sequence valve 2 62 opens, and the system pressure passes through the sequence valve 62 and the pressure reducing valve 3. The pressure of the pressure reducing valve 3 is set to 12Mpa, and enters the large chamber of the booster cylinder. The piston The rod pushes toward the small cavity, and the small cavity enters the shear cylinder with the pressurized pressure and instantly increases the pressure (a 2-fold pressurized booster cylinder is selected in this system), and the pressure of the upper shear cylinder can increase to 24Mpa; when the shears touch the strip and build up pressure, when the pressure is less than 17Mpa, the sequence valve will not open and the booster cylinder will not start; the return oil passes through the sequence valve 61 and returns to the return oil tank through the reversing valve 4; through this process, automatic pressurization is achieved, and when the shearing cannot be carried out, the pressure is automatically increased by setting the pressure of the sequence valve; a sequence valve 61 is also designed in this system to be used as a back pressure valve.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. An automatic pressure boosting device for shearing strip steel of a laser gas shielded welding hybrid welding machine in a strip steel production line, comprising a pressure measuring joint 1 (11), a pressure measuring joint 2 (12), a pressure measuring joint 3 (13), a pressure measuring hose (2), a pressure reducing valve (3), a reversing valve (4), a hydraulic control lock (5), a sequence valve 1 (61), a sequence valve 2 (62), and a pressure gauge (7), characterized in that: One end of the pressure measuring hose (2) is connected to a pressure gauge (7), and the other end is connected to the main oil circuit of the hydraulic system through a pipeline, so as to detect the working pressure of the system in real time; The pressure measuring joint 1 (11) is installed at the large cavity of the booster cylinder and is used to connect the pressure measuring hose and detect the oil pressure at this position.

2. The automatic pressurizing device for shearing strip steel of a laser gas shielded welding hybrid welding machine in a strip steel production line according to claim 1 is characterized in that: The second pressure measuring joint (12) is installed at the rod cavity of the upper scissor oil cylinder and is used to connect the pressure measuring hose and detect the oil pressure at this position.

3. The automatic pressurizing device for shearing strip steel of a laser gas shielded welding hybrid welding machine in a strip steel production line according to claim 1 is characterized in that: The pressure measuring joint 3 (13) is installed on the oil circuit in front of the sequence valve 2 (62) and is used to connect the pressure measuring hose (2) and detect the pressure increase condition of the system.

4. The automatic pressurizing device for shearing strip steel of a laser gas shielded welding hybrid welding machine in a strip steel production line according to claim 1 is characterized in that: The pressure reducing valve (3) is connected in series with the second sequence valve (62) and is used to reduce the pressure of the system by controlling the pressure in the oil circuit. Its outlet is connected to the large chamber of the booster cylinder.

5. The automatic pressurizing device for shearing strip steel of a laser gas shielded welding hybrid welding machine in a strip steel production line according to claim 1 is characterized in that: The reversing valve (4) is connected to the hydraulic lock (5) and the sequence valve (61) through a pipeline, and is used to control the direction of oil flow to achieve the rising and falling movements of the scissors.

6. The automatic pressurizing device for shearing strip steel of a laser gas shielded welding hybrid welding machine in a strip steel production line according to claim 1 is characterized in that: The hydraulic lock (5) is connected to the reversing valve (4) and is used to control the flow of oil into and out of the rod chamber of the upper scissor oil cylinder.

7. The automatic pressurizing device for shearing strip steel of a laser gas shielded welding hybrid welding machine in a strip steel production line according to claim 1 is characterized in that: The sequence valve 1 (61) is installed in the oil return line of the upper scissor oil cylinder and is used to control the back pressure when the scissors return.

8. The automatic pressurizing device for shearing strip steel of a laser gas shielded welding hybrid welding machine in a strip steel production line according to claim 1 is characterized in that: The second sequence valve (62) is connected in series with the pressure reducing valve (3) and opens when the system pressure exceeds the set value to control the start of the boost cylinder.

9. The automatic pressurizing device for shearing strip steel by a laser gas shielded welding hybrid welding machine in a strip steel production line according to claim 1 is characterized in that: The pressure gauge (7) is connected to the main oil circuit of the hydraulic system via a pressure measuring hose (2) and is used to display the real-time pressure value of the system.

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