Single-cylinder and double-cylinder self-adaptive conversion device for welding thick and thin plates of welding machine on strip steel production line

Abstract

The utility model discloses a single-cylinder and double-cylinder self-adaptive conversion device for welding thick and thin plates of a welding machine on a strip steel production line, which relates to the technical field of strip steel manufacturing and comprises a welding wheel guide cylinder, a reversing valve, an on-off valve, a quick exhaust valve, a large-flow pressure reducing valve, a proportional pressure reducing valve, a micro-mist separator, a one-way throttle valve I, a one-way throttle valve II and a one-way throttle valve III, the welding wheel guide cylinder is connected to a reversing valve through a pipeline; when the reversing valve works at the left position, gas flows to the welding wheel guide air cylinder to enable the welding wheel guide air cylinder to move downwards; the on-off valve is connected with the upper cavity of the double-layer air cylinder through a pipeline. The single-cylinder and double-cylinder self-adaptive switching device for welding the thick and thin plates of the welding machine on the strip steel production line can be automatically adjusted according to the thicknesses of the plates, different machining requirements are met by switching a single-cylinder operation mode and a double-cylinder operation mode, and the adaptability of equipment is improved; unnecessary energy consumption can be reduced, only a single cylinder is used when a thin plate is processed, and energy is effectively saved.

Description

Technical Field

[0001] The utility model relates to the technical field of strip steel manufacturing, in particular to a single and double cylinder adaptive conversion device for welding thick and thin plates in a strip steel production line welding machine. Background Technique

[0002] The thickness of the strip steel head and tail welded by a laser welding machine is generally 0.1 - 6 mm, and the thickness of the strip steel welded by a lap welding machine generally ranges from 0.1 - 3 mm. When there is such a requirement on the same production line, a single welding machine in reality cannot achieve welding with such a large span of thickness. If it is necessary to solve the welding of a large span of plate thickness on a single welding device, the pressure adaptability of the welding device of the welding machine must be adjusted to ensure the welding quality. However, due to the particularity of the large-scale production type of the strip steel production line, when welding different thick and thin plates, the welding device must realize automatic adjustment of the welding pressure to achieve welding of a large range of changes in thick and thin plates. Only in this way can the adaptability of the strip steel production line be expanded and the production efficiency of the equipment be improved. Different thicknesses of plate welding require different welding pressures. The welding pressure of the welding machine is formed by controlling the downward pressure of the cylinder through a proportional valve. In order to generate force, a multi-stage cylinder is generally used. In the working characteristics of the proportional valve, the set upper value is not very stable when it is at the critical value. This leads to unstable welding quality. Therefore, the pressure value of the proportional valve needs to be set in a stable area.

[0003] Therefore, the utility model proposes a single and double cylinder adaptive conversion device for welding thick and thin plates in a strip steel production line welding machine to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to make the proportional valve set in a stable interval and still be able to achieve stable welding pressure for plates of different thicknesses, solve the problems proposed in the prior art, and propose a single and double cylinder adaptive conversion device for welding thick and thin plates in a strip steel production line welding machine. When the thickness of the welded plate of a single welding device changes in a large range, for thick and thin welding objects, the multi-stage cylinder in the pneumatic system is switched to adapt to plates of different thicknesses, and the single cylinder output or double cylinder output is selectively used.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solution: a single and double cylinder adaptive conversion device for welding thick and thin plates in a strip steel production line welding machine, including a welding wheel guiding cylinder, a reversing valve, a on-off valve, a quick exhaust valve, a large flow reducing valve, a proportional reducing valve, a micro mist separator, a one-way throttle valve one, a one-way throttle valve two, and a one-way throttle valve three.

[0006] The welding wheel guiding cylinder is connected to the reversing valve through a pipeline; when the reversing valve is in the left position, the gas flows to the welding wheel guiding cylinder to make it move downward; the on-off valve is connected to the upper cavity of the double-layer cylinder through a pipeline; when processing thin plates, the on-off valve is closed so that the gas only leads to the lower cavity of the double-layer cylinder to realize single cylinder operation.

[0007] Further, the directional control valve receives the air source through its air inlet and controls the gas flow direction according to the on / off state of its electromagnetic coil. When in the left position, the gas reaches the large-flow pressure reducing valve through the pipeline.

[0008] Further, the large-flow pressure reducing valve receives the gas from the directional control valve and is simultaneously controlled by the proportional pressure reducing valve. It changes the gas flow rate by adjusting the pressure at its control port. The pressure at the control port of the large-flow pressure reducing valve is set by the proportional pressure reducing valve.

[0009] Further, the proportional pressure reducing valve is connected to the system through the air source pipeline, sets the required pressure and transmits it to the control port of the large-flow pressure reducing valve to control the output air pressure to adapt to plates of different thicknesses.

[0010] Further, the quick exhaust valve is connected in the air circuit, receives the gas and quickly discharges it when necessary. It is controlled by the built-in one-way valve to ensure that the exhaust port is closed when the gas is flowing.

[0011] Further, the micro mist separator is located in the air source pipeline to ensure the cleanliness of the gas entering the system and remove fine oil mist and moisture.

[0012] Further, the one-way throttle valve 1 and the one-way throttle valve 3 are respectively connected to the cylinder to control the flow rate and direction of the air flow.

[0013] Further, the one-way throttle valve 2 is connected to the proportional pressure reducing valve to further adjust the gas flow rate passing through.

[0014] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0015] 1. Adaptive conversion: The system can automatically adjust according to the thickness of the plate. By switching the operation modes of the single cylinder and the double cylinder, it can meet different processing requirements and improve the adaptability of the equipment.

[0016] 2. Energy saving and high efficiency: Since it only switches to the double cylinder working mode when needed, unnecessary energy consumption can be reduced. Only the single cylinder is used when processing thin plates, effectively saving energy.

[0017] 3. Precise pressure control: Through the setting of the proportional pressure reducing valve, plates of different thicknesses can be processed with appropriate pressure to ensure the welding quality and precision.

[0018] 4. Quick response: The application of the quick exhaust valve enables the system to quickly adjust the actions of the cylinder, thereby improving the production efficiency and reducing the time loss during the switching process.

[0019] In summary, when the proportional valve of the present utility model is set within a stable range, it can also achieve stable welding pressure for sheet metal welding machines with different thicknesses. When the thickness of the sheet metal to be welded by a single welding device varies within a large range, for thick and thin welding objects, the multiple air cylinders in the pneumatic system are switched to adapt to different thicknesses of sheet metal, and the single-cylinder output or double-cylinder output is selectively used, which improves the working efficiency and product quality of the welding machine on the steel strip production line, and at the same time reduces the operating cost and energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the present utility model.

[0021] Legend Explanation: 1. Welding wheel guiding cylinder; 2. Directional control valve; 3. On-off valve; 4. Quick exhaust valve; 5. Large flow pressure reducing valve; 6. Proportional pressure reducing valve; 7. Micro mist separator; 81. One-way throttle valve one; 82. One-way throttle valve two; 83. One-way throttle valve three. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to more clearly understand the above-mentioned objects, features and advantages of the present utility model, the present utility model will be further described below with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0023] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the present utility model is not limited by the specific embodiments disclosed in the following specification.

[0024] As Figure 1 shown, the present utility model provides a single / double cylinder adaptive conversion device for thick and thin plate welding of a welding machine on a strip steel production line, including a welding wheel guiding cylinder 1, a directional control valve 2, an on-off valve 3, a quick exhaust valve 4, a large flow pressure reducing valve 5, a proportional pressure reducing valve 6, a micro mist separator 7, a one-way throttle valve one 81, a one-way throttle valve two 82, and a one-way throttle valve three 83.

[0025] The welding wheel guiding cylinder 1 is connected to the directional control valve 2 through a pipeline; when the directional control valve 2 is in the left position, the gas flows to the welding wheel guiding cylinder 1 to make it move downward.

[0026] The directional control valve 2 receives the air source through its air inlet, and controls the flow direction of the gas according to the on / off of its electromagnetic coil; when in the left position, the gas reaches the large flow pressure reducing valve 5 through the pipeline.

[0027] The large flow pressure reducing valve 5 receives the gas from the directional control valve 2 and is simultaneously controlled by the proportional pressure reducing valve 6. The flow rate of the passing gas is changed by adjusting the pressure of its control port; the pressure of the control port of the large flow pressure reducing valve 5 is set by the proportional pressure reducing valve 6.

[0028] The proportional pressure reducing valve 6 is connected to the system through the air source pipeline, sets the required pressure and transmits it to the control port of the large flow rate pressure reducing valve 5, which is used to control the output air pressure to adapt to plates of different thicknesses.

[0029] The on-off valve 3 is connected to the upper chamber of the double-layer cylinder through a pipeline; when processing thin plates, the on-off valve 3 is closed, so that the gas only leads to the lower chamber of the double-layer cylinder, which is used to realize single-cylinder operation.

[0030] The quick exhaust valve 4 is connected in the gas circuit, receives the gas and quickly discharges it when necessary; it is controlled by a built-in one-way valve to ensure that the exhaust port is closed when the gas is flowing.

[0031] The micro mist separator 7 is located in the air source pipeline, which is used to ensure the cleanliness of the gas entering the system and remove fine oil mist and moisture.

[0032] The one-way throttle valve one 81 and the one-way throttle valve three 83 are respectively connected to the cylinder, which are used to control the flow rate and direction of the air flow.

[0033] The one-way throttle valve two 82 is connected to the proportional pressure reducing valve 6 to further adjust the gas flow rate passing through.

[0034] Through these connection and control mechanisms, the system can automatically adjust under different plate thicknesses, so as to realize the flexible switching between single-cylinder and double-cylinder.

[0035] Working principle: When the welding wheel guiding cylinder 1 needs to move downward, the electromagnetic reversing valve 2 works in the left position. The gas passes through the reversing valve 2 to reach the large flow rate pressure reducing valve 5. The proportional pressure reducing valve 6 sets the pressure and leads it to the control port of the large flow rate pressure reducing valve 5. The gas passes through the proportional pressure reducing valve 6 to reach the quick exhaust valve 4. The one-way valve moves upward to close the exhaust port of the quick exhaust valve 4. The gas passes through the throttle valve from the air outlet. When the incoming material is a thin plate and single-cylinder output is required, the on-off valve 3 is closed at this time. The upper chamber of the double-layer cylinder is connected to the air, and the gas flows to the quick exhaust valve 4. The one-way valve moves upward to close the exhaust port and the gas reaches the lower chamber of the cylinder. At this time, only the lower cylinder of the double-layer cylinder works; in this way, the switching between double-cylinder and single-cylinder is realized only through a two-position two-way solenoid valve, and the pressures of thin plates and thick plates are set respectively.

[0036] The above is only the preferred embodiment of the present invention, and it is not a limitation to the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A single-cylinder and double-cylinder adaptive conversion device for thick and thin plate welding of a strip steel production line welding machine, comprising a welding wheel guide cylinder (1), a reversing valve (2), an on-off valve (3), a quick exhaust valve (4), a large flow pressure reducing valve (5), a proportional pressure reducing valve (6), a micro-mist separator (7), a one-way throttle valve 1 (81), a one-way throttle valve 2 (82), and a one-way throttle valve 3 (83), characterized in that: The welding wheel guide cylinder (1) is connected to the reversing valve (2) through a pipeline; when the reversing valve (2) is in the left position for operation, gas flows to the welding wheel guide cylinder (1) to make it move downward; the on-off valve (3) is connected to the upper chamber of the double-layer cylinder through a pipeline; when processing a thin plate, the on-off valve (3) is closed so that the gas only flows to the lower chamber of the double-layer cylinder, so as to realize single-cylinder operation.

2. The single-cylinder and double-cylinder adaptive conversion device for thick and thin plate welding of a strip steel production line welding machine according to claim 1 is characterized in that: The reversing valve (2) receives the gas source through its gas inlet and controls the flow direction of the gas according to the on and off of its electromagnetic coil; when in the left position, the gas reaches the large flow pressure reducing valve (5) through the pipeline.

3. The single-cylinder and double-cylinder adaptive conversion device for thick and thin plate welding of a strip steel production line welding machine according to claim 1 is characterized in that: The large flow pressure reducing valve (5) receives gas from the reversing valve (2) and is controlled by the proportional pressure reducing valve (6) to change the gas flow passing therethrough by adjusting the pressure at its control port; the pressure at the control port of the large flow pressure reducing valve (5) is set by the proportional pressure reducing valve (6).

4. The single-cylinder and double-cylinder adaptive conversion device for thick and thin plate welding of a strip steel production line welding machine according to claim 1 is characterized in that: The proportional pressure reducing valve (6) is connected to the system through the air source pipeline, sets the required pressure and transmits it to the control port of the large flow pressure reducing valve (5), so as to control the output air pressure to adapt to plates of different thicknesses.

5. The single-cylinder and double-cylinder adaptive conversion device for thick and thin plate welding of a strip steel production line welding machine according to claim 1 is characterized in that: The quick exhaust valve (4) is connected in the gas path, receives gas and discharges it quickly when necessary; it is controlled by a built-in one-way valve to ensure that the exhaust port is closed when the gas flows.

6. The single-cylinder and double-cylinder adaptive conversion device for thick and thin plate welding of a strip steel production line welding machine according to claim 1 is characterized in that: The micro mist separator (7) is located in the gas source pipeline and is used to ensure that the gas entering the system is clean and to remove fine oil mist and moisture.

7. The single-cylinder and double-cylinder adaptive conversion device for thick and thin plate welding of a strip steel production line welding machine according to claim 1 is characterized in that: The one-way throttle valve 1 (81) and the one-way throttle valve 3 (83) are respectively connected to the cylinder to control the flow rate and direction of the air flow.

8. The single-cylinder and double-cylinder adaptive conversion device for thick and thin plate welding of a strip steel production line welding machine according to claim 1 is characterized in that: The one-way throttle valve 2 (82) is connected to the proportional pressure reducing valve (6) to further adjust the gas flow rate passing therethrough.

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