Plasma arc cutting machine

Abstract

The embodiment of the invention provides a plasma arc cutting machine, and relates to the technical field of cutting machines. The plasma arc cutting machine comprises a workbench, a cutting device, a plasma arc cutting power source and a double-channel switching assembly. The workbench is used for supporting and positioning a to-be-cut workpiece. The cutting equipment is used for cutting a workpiece, and the cutting equipment is driven by the linear driving assembly; the plasma arc cutting power supply is used for providing stable and adjustable high current and voltage; meanwhile, a double-channel switching assembly is arranged above the inner cavity of the plasma arc cutting power source and used for switching between manual cutting and numerical control cutting back and forth. According to the scheme, the double-channel switching assembly is adopted to achieve independent control over a gas circuit and a circuit, so that an operator can directly use a manual cutting gun to process leftover materials after numerical control cutting is completed, and equipment does not need to be replaced. The operation process is simplified, the working efficiency is improved, the equipment purchase cost and the working space requirement are reduced, effective utilization of resources is achieved, and the reliability and safety of the whole system are improved.

Description

Technical Field

[0001] The present application relates to the technical field of cutting machines, and in particular to a plasma arc cutting machine. Background Art

[0002] In the metal processing industry, plasma arc cutting machines are widely used in cutting various plates due to their high efficiency and precision. Currently, the common plasma arc cutting equipment on the market is mainly divided into two categories: CNC cutting system and manual cutting system. CNC cutting system can realize automatic large-area plate cutting by pre-programming the cutting path, which is suitable for mass production needs; while manual cutting system relies on manual operation of the operator, has high flexibility, and is suitable for complex shapes or small batch customized production.

[0003] The current plasma arc cutting equipment on the market usually needs to be equipped with two independent cutting systems when dealing with large-area plate cutting and subsequent scrap processing. One is a large system for CNC cutting and the other is a small handheld cutting gun for manual fine adjustment or scrap processing. This not only increases the equipment procurement cost and occupies more working space, but also makes the switching operation process between different equipment cumbersome and reduces work efficiency.

[0004] In addition, after completing CNC cutting, the operator must stop the operation of the CNC equipment and move to another handheld plasma cutting equipment for manual cutting. This process is not only time-consuming, but may also lead to inaccurate positioning of the workpiece or repeated labor, affecting the quality of the final product; more importantly, since the two cutting methods use different power supplies and control systems, the existing plasma arc cutting power supply and its related supporting facilities (such as water tanks, compressed air supply systems, etc.) are not fully utilized, resulting in a waste of resources. Therefore, the existing technology has the problems of high equipment cost, inconvenient operation and insufficient resource utilization. Summary of the invention

[0005] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a plasma arc cutting machine that integrates CNC cutting and manual cutting functions. By adding a manual cutting gun interface to the existing CNC cutting system and using a dual-channel switching component to achieve independent control of the gas circuit and the circuit, the operator can directly use the manual cutting gun to process the scraps after completing the CNC cutting without changing the equipment. This innovative design not only simplifies the operating process and improves work efficiency, but also significantly reduces equipment procurement costs and workspace requirements, while achieving effective utilization of resources and improving the reliability and safety of the overall system.

[0006] The plasma arc cutting machine according to the embodiment of the present application comprises: a workbench, a cutting device, a plasma arc cutting power supply and a dual-channel switching component;

[0007] The workbench is used to support and position the workpiece to be cut; the cutting device is used to cut the workpiece, and the cutting device is driven by a linear drive assembly; the plasma arc cutting power supply is used to provide stable and adjustable high current and voltage;

[0008] At the same time, a dual-channel switching component is set above the inner cavity of the plasma arc cutting power supply to switch back and forth between manual cutting and CNC cutting;

[0009] The dual-channel switching component includes contactor 1, relay 1, contactor 2 and relay 2, wherein contactor 1 is used in conjunction with relay 1, and contactor 2 is used in conjunction with relay 2.

[0010] According to some embodiments of the present application, the inner cavity of the workbench is equipped with a support grid, which is used in conjunction with the workbench to support the workpiece to be cut;

[0011] At the same time, the cutting device is driven and controlled by a cutting control device arranged above the workbench.

[0012] According to some embodiments of the present application, the linear drive assembly includes a linear motor 1 and a linear motor 2, which are used in conjunction with each other;

[0013] The left and right ends of the workbench are respectively provided with a main support bracket and an auxiliary support bracket, and the main support bracket is installed at the end of the workbench;

[0014] The output end of the linear motor 1 is installed with a mounting slide, wherein the right side of the mounting slide is slidably mounted on the end of the auxiliary support bracket through a support plate, and the linear motor 2 is installed to the end of the mounting slide.

[0015] According to some embodiments of the present application, in order to store the plasma arc cutting power supply, a loading cart is provided on one side of the plasma arc cutting power supply, and the front side of the inner cavity of the loading cart is divided into two upper and lower spaces by a partition, the plasma arc cutting power supply is arranged above the inner cavity of the loading cart, and a water tank is provided below the inner cavity of the plasma arc cutting power supply.

[0016] According to some embodiments of the present application, a receiving slot cavity is provided at the end of the inner cavity of the plasma arc cutting power supply, and the receiving slot cavity is used to assemble the dual-channel switching component;

[0017] At the same time, a material collecting chamber is provided at the front side of the inner cavity of the plasma arc cutting power source, and a distribution conversion mechanism is arranged in the material collecting chamber for controlling the distribution of compressed air to manual cutting or numerical control cutting.

[0018] According to some embodiments of the present application, the dual-channel switching assembly also includes a drive board, a gun protection switch board, a transformer and a small arc board, wherein a loading panel is installed at the bottom of the inner cavity of the storage slot cavity, and the drive board, the gun protection switch board, the transformer, the small arc board, the contactor 1, the relay 1, the contactor 2 and the relay 2 are integrated and installed at the end of the loading panel.

[0019] According to some embodiments of the present application, a control panel is installed at the end of the front side of the plasma arc cutting power supply, and a plug-in panel is installed at the bottom of the front side of the plasma arc cutting power supply, wherein a gas-electricity connector 1, a gas-electricity connector 2, a water-electricity connector and a return water connector are installed on the surface of the plug-in panel.

[0020] According to some embodiments of the present application, a handheld cutting gun is provided at the output end of the gas-electric connector 2, wherein the handheld cutting gun is plugged into the gas-electric connector 2 via a connecting line.

[0021] According to some embodiments of the present application, a connection panel is installed on the rear side of the plasma arc cutting power supply, wherein a cutting gun switching switch and a water tank power supply are installed on the connection panel, wherein the cutting gun switching switch is used to switch between manual cutting and CNC cutting.

[0022] According to some embodiments of the present application, the adjustment conversion mechanism includes a solenoid valve body, and a pipeline 1 is installed at the input end of the solenoid valve body, and at the same time, a pipeline 2 is installed at the output end of the solenoid valve body, wherein a three-way pipe is installed at the output end of the pipeline 2;

[0023] At the same time, the interfaces of the three-way pipe are connected to the air pipe and pipeline three respectively, wherein the surface of the air pipe is installed with a single-connected solenoid valve two, and the surface of pipeline three is installed with a single-connected solenoid valve one.

[0024] The beneficial effects of the present application are as follows: the workbench is equipped with a support grid for supporting the workpiece to be cut, and the cutting device is controlled and driven by the cutting control device, and the linear motor 1 and the linear motor 2 are used to realize the movement in the X-axis and Y-axis directions for automatic cutting. The linear motor 1 drives the installation slide to move forward and backward, while the linear motor 2 is installed on the installation slide and is responsible for the horizontal movement. The two work together to enable the cutting device to move accurately on the workbench. In addition, the electric telescopic rod further provides adjustment in the Z-axis direction. The plasma arc cutting power supply provides the necessary high current and voltage for the cutting process, and a storage slot cavity is provided therein for assembling a dual-channel switching component, including components such as contactor 1, relay 1, contactor 2 and relay 2, as well as a drive board, a gun protection switch board, a transformer and a small arc board. In the numerical control mode, these components give signals to relay 1 and contactor 1 through the control panel to start the arc and start cutting; in the manual cutting mode, they are operated by sending signals to relay 2 and contactor 2. At the same time, the solenoid valve body and its matching single-connected solenoid valve 1 and single-connected solenoid valve 2 ensure the independent operation of the air circuits in the two cutting modes, ensuring that only the currently used cutting gun has compressed air supply, whether in CNC or manual cutting mode, thus avoiding safety hazards caused by misoperation. This design achieves efficient, safe and accurate metal material cutting.

[0025] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a first schematic diagram of the overall structure of a plasma arc cutting machine according to an embodiment of the present application;

[0028] Figure 2 is a second schematic diagram of the overall structure of the plasma arc cutting machine according to an embodiment of the present application;

[0029] Figure 3 It is a schematic diagram of the front view assembly of the water tank, loading trolley and chassis structure according to an embodiment of the present application;

[0030] Figure 4 This is one of the three-dimensional assembly diagrams of the water tank, loading trolley and chassis structure according to an embodiment of the present application;

[0031] Figure 5 This is the second schematic diagram of the three-dimensional assembly of the water tank, the loading trolley and the chassis structure according to the embodiment of the present application;

[0032] Figure 6 This is a schematic diagram of a three-dimensional exploded structure of a water tank, a loading trolley and a chassis according to an embodiment of the present application;

[0033] Figure 7 This is the second schematic diagram of the three-dimensional exploded structure of the water tank, the loading trolley and the chassis according to the embodiment of the present application;

[0034] Figure 8 is a schematic front view of a chassis structure according to an embodiment of the present application;

[0035] Fig. 9 is a schematic diagram of a chassis structure decomposition according to an embodiment of the present application;

[0036] Fig.10 is a three-dimensional schematic diagram of a connection panel structure according to an embodiment of the present application;

[0037] Fig.11 is a schematic front view of a connection panel structure according to an embodiment of the present application;

[0038] Fig.12 is a schematic top view of a loading panel structure according to an embodiment of the present application;

[0039] Fig.13 is a schematic diagram of the gas conversion mechanism structure assembly according to an embodiment of the present application;

[0040] Fig.14 It is a rear perspective schematic diagram of a loading panel structure according to an embodiment of the present application.

[0041] Icons: 100, workbench; 110, support grid; 200, cutting equipment; 210, cutting control equipment; 300, main support bracket; 301, auxiliary support bracket; 310, installation slide; 320, linear motor one; 330, linear motor two; 400, water tank; 500, loading trolley; 510, storage shell; 520, drawer; 600, plasma arc cutting power supply; 601, storage slot cavity; 602, aggregate cavity; 610, control panel; 620, connection panel; 621, cutting gun switch; 622, water tank power supply; 630, plug-in panel; 631, power supply; 632, power supply; 633, power supply; 634, power supply; 635, power supply; 636, power supply; 637, power supply; 638, power supply; 639, power supply; 640, power supply; 641, power supply; 642, power supply; 643, power supply; 644, power supply; 645, power supply; 646, power supply; 647, power supply; 648, power supply; 649, power supply; 650, power supply; 651, power supply; 652, power supply; 653, power supply; 654, power supply; 655, power supply; 656, power supply; 657, power supply; 658, power supply; 659, power supply; 660, power supply; 661, power supply; 662, power supply; 663, power supply; 664, power supply; 665, power supply; 666, power supply; 667, power supply; 670, power supply; 671, power supply; 672, power supply; 6 1. Gas-electric connector 1; 632. Gas-electric connector 2; 633. Water-electric connector; 634. Return water connector; 700. Handheld cutting gun; 710. Connecting wire; 800. Loading panel; 810. Drive board; 820. Gun protection switch board; 830. Transformer; 840. Small arc board; 850. Contactor 1; 860. Relay 1; 870. Contactor 2; 880. Relay 2; 900. Solenoid valve body; 910. Pipeline 1; 920. Pipeline 2; 930. Tee pipe; 940. Pipeline 3; 950. Single-connected solenoid valve 1; 960. Single-connected solenoid valve 2. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0043] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0044] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0045] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0046] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0047] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0048] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0049] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0050] The plasma arc cutting machine according to the embodiment of the present application is described below with reference to the accompanying drawings.

[0051] like Figure 1-Figure 14 As shown, the plasma arc cutting machine according to the embodiment of the present application includes: a workbench 100, a cutting device 200, a plasma arc cutting power supply 600 and a dual-channel switching component;

[0052] The workbench 100 is used to support and position the workpiece to be cut; the inner cavity of the workbench 100 is equipped with a support grid 110, which is used in conjunction with the workbench 100 to support the workpiece to be cut;

[0053] At the same time, the cutting device 200 is driven and controlled by a cutting control device 210 disposed above the workbench 100 .

[0054] The cutting device 200 is used to cut the workpiece; the cutting device 200 is driven by a linear drive assembly; the cutting device 200 is a CNC cutting mode;

[0055] The linear drive assembly includes a linear motor 1 320 and a linear motor 2 330, which are used together to adjust the X-axis and Y-axis of the cutting device 200, so that the cutting device 200 can move horizontally forward and backward and left and right on the workbench 100; thereby automatically cutting the workpiece on the support grid 110;

[0056] At the same time, in order to support the linear motor 1 320 and the linear motor 2 330, a main support bracket 300 and an auxiliary support bracket 301 are respectively set up at the left and right ends of the workbench 100, wherein the bottom feet of the main support bracket 300 and the auxiliary support bracket 301 are in contact with the ground, and the main support bracket 300 is set up and installed at the end of the workbench 100;

[0057] The output end of the linear motor 1 320 is installed with a mounting slide 310, wherein the right side of the mounting slide 310 is slidably mounted on the end of the auxiliary support bracket 301 through a support plate, and the mounting slide 310 is supported by the auxiliary support bracket 301, and the linear motor 1 320 can drive the mounting slide 310 to move horizontally in the front and rear directions, wherein the linear motor 2 330 is installed on the left side of the mounting slide 310, and moves with the mounting slide 310, and the linear motor 2 330 is installed at the end of the mounting slide 310, wherein the cutting device 200 is installed at the output end of the linear motor 2 330;

[0058] In actual use, the linear motor 1 320 can drive the cutting device 200 to move forward and backward by installing the slide 310, and the linear motor 2 330 can directly drive the cutting device 200 to move horizontally, thereby driving the cutting device 200 to cut the workpiece;

[0059] As an optional implementation method, an electric telescopic rod is installed on the surface of the cutting device 200, and the electric telescopic rod is installed to the output of the linear motor 2 330, and the cutting device 200 is connected to the output end of the electric telescopic rod. Therefore, the electric telescopic rod drives the cutting device 200 to move up and down, so that the cutting device 200 is adjusted in three-axis directions through the linear motor 1 320, the linear motor 2 330 and the electric telescopic rod.

[0060] The plasma arc cutting power supply 600 is used to provide stable and adjustable high current and voltage to generate and maintain a stable plasma arc to achieve efficient and precise cutting of metal materials;

[0061] In order to store the plasma arc cutting power supply 600, a loading trolley 500 is arranged on one side of the plasma arc cutting power supply 600, and the front side of the inner cavity of the loading trolley 500 is divided into two upper and lower spaces by a partition. The plasma arc cutting power supply 600 is arranged above the inner cavity of the loading trolley 500, and a water tank 400 is arranged below the inner cavity of the plasma arc cutting power supply 600. The water tank 400 and the plasma arc cutting power supply 600 are used in conjunction with each other;

[0062] A storage shell 510 is installed on the right side of the loading trolley 500, wherein the inner cavity of the storage shell 510 is provided with a drawer 520 by sliding on a slide rail, and the storage shell 510 and the drawer 520 can be used to store and place cables and other parts used in the plasma arc cutting machine;

[0063] Specifically, a receiving slot cavity 601 is provided at the end of the inner cavity of the plasma arc cutting power supply 600, and the receiving slot cavity 601 is used to assemble the dual-channel switching component;

[0064] The dual-channel switching component includes contactor one 850, relay one 860, contactor two 870 and relay two 880, wherein contactor one 850 and relay one 860 are used in conjunction with each other, and contactor two 870 and relay two 880 are used in conjunction with each other.

[0065] The dual-channel switching assembly also includes a driving board 810, a gun protection switch board 820, a transformer 830 and a small arc board 840, wherein a loading panel 800 is installed at the bottom of the inner cavity of the storage slot cavity 601, and the driving board 810, the gun protection switch board 820, the transformer 830, the small arc board 840, the contactor 1 850, the relay 1 860, the contactor 2 870 and the relay 2 880 are integrated and installed at the end of the loading panel 800, wherein the driving board 810, the gun protection switch board 820, the transformer 830, the small arc board 840, the contactor 1 850, the relay 1 860, the contactor 2 870 and the relay 2 880 are electrically connected through cables.

[0066] When in the digital control mode, the control panel 610 gives a signal to the relay 860 and the contactor 850 to control the relay 860 and the contactor 850 to form a path, and the contactor 850 starts to work to start an arc, and the small arc plate 840 starts an arc;

[0067] When in manual cutting mode, the control panel 610 gives a gun switch control signal to the relay 2 880 and the contactor 2 870. At the same time, the relay 1 860 and the contactor 1 850 are in a short-circuited state, and the contactor 2 870 is closed. At the same time, the control panel 610 gives a signal to the small arc plate 840 to start an arc. The small arc plate 840 starts an arc, and the handheld cutting gun 700 starts an arc successfully.

[0068] A control panel 610 is installed at the end of the front side of the plasma arc cutting power supply 600, and a plug-in panel 630 is installed at the bottom of the front side of the plasma arc cutting power supply 600, wherein a gas-electric connector 1 631, a gas-electric connector 2 632, a water-electric connector 633 and a return water connector 634 are installed on the surface of the plug-in panel 630, the input end of the gas-electric connector 2 632 is connected to the output end of the pipeline 3 940, and the input end of the gas-electric connector 1 631 is connected to the output end of the air pipe on the single-connected solenoid valve 2 960.

[0069] Specifically, two sets of arc striking terminal interfaces, a control interface and a grounding interface are installed on the surface of the plug-in panel 630 .

[0070] The output end of the gas-electric connector 2 632 is provided with a handheld cutting gun 700, wherein the handheld cutting gun 700 is plugged into the gas-electric connector 2 632 via a connecting line 710; and the gas-electric connector 1 631 is connected to the output end of the cutting device 200 via a plug cable.

[0071] A connection panel 620 is installed on the rear side of the plasma arc cutting power supply 600, wherein a cutting torch switching switch 621 and a water tank power supply 622 are installed on the connection panel 620, wherein the cutting torch switching switch 621 is used to switch between manual cutting and CNC cutting;

[0072] Specifically, the power supply of the water tank power supply 622 is 380V, and the surface of the connection panel 620 is also equipped with a power switch, a power input connector, an arc voltage output connector and a control signal connector.

[0073] At the same time, a material collecting chamber 602 is provided at the front side of the inner cavity of the plasma arc cutting power source 600, and a distribution conversion mechanism is provided in the material collecting chamber 602 for controlling the distribution of compressed air to manual cutting or CNC cutting.

[0074] At the same time, a dual-channel switching component is arranged above the inner cavity of the plasma arc cutting power supply 600 for switching back and forth between manual cutting and CNC cutting.

[0075] The adjustment conversion mechanism includes a solenoid valve body 900, and a pipeline 1 910 is installed at the input end of the solenoid valve body 900, and a pipeline 2 920 is installed at the output end of the solenoid valve body 900, wherein a three-way pipe 930 is installed at the output end of the pipeline 2 920;

[0076] At the same time, the interfaces of the three-way pipe 930 are respectively connected with the air pipe and the pipeline 3 940, wherein the surface of the air pipe is installed with a single-connected solenoid valve 2 960, and the surface of the pipeline 3 940 is installed with a single-connected solenoid valve 1 950, wherein the air pipe is connected with the gas-electric connector 1 631, and the other end of the pipeline 3 940 is connected with the gas-electric connector 2 632;

[0077] In this solution, a three-way pipe 930, a single-connected electromagnetic valve 1 950 and a single-connected electromagnetic valve 2 960 are added to the gas pipeline behind the electromagnetic valve body 900. When the cutting device 200 is working, the electromagnetic valve body 900 and the single-connected electromagnetic valve 2 960 are opened. During CNC cutting, a complete gas path is formed, and the gas is sent to the gas-electric connector 1 631 connected thereto through the three-way pipe 930 and the single-connected electromagnetic valve 2 960; thus, the gas is directly supplied to the cutting device 200;

[0078] During manual cutting, by controlling the electromagnetic valve body 900 and the single electromagnetic valve 950 to open, a complete gas path is formed during manual cutting, and the gas is sent to the gas-electric connector 2 632 connected thereto through the three-way pipe 930 and the single electromagnetic valve 950, so as to be directly supplied to the handheld cutting gun 700;

[0079] Therefore, two sets of airways are formed. When working, only one set of airways can be controlled to form a passage, and the other set of airways is in a closed state;

[0080] The single-connected solenoid valve 950 is electrically connected to the control panel 610 and the relay 860 respectively. After the signal is given, the single-connected solenoid valve 950 is opened, and the gas path is connected, so the handheld cutting gun 700 has normal gas pressure to work;

[0081] At the same time, the second single-connected solenoid valve 960 is electrically connected to the control panel 610 and the second relay 880 respectively. After the signal is given, the second single-connected solenoid valve 960 is opened, and the gas path is connected, so that the cutting device 200 has normal gas pressure to work;

[0082] In the CNC cutting mode, the single-connected solenoid valve 1 950 is in a short-circuit state, while the single-connected solenoid valve 2 960 is in an open state, so as to supply gas to the cutting device 200 through the gas-electric connector 1 631 .

[0083] During CNC cutting, the AC36V of the control transformer 830 passes through the cutting gun switching switch 621. The switch is turned up to the CNC cutting mode, and the control contactor 850 and the relay 860 are closed. The signal of the control solenoid valve body 900 and the single-connected solenoid valve 2 960 on the circuit board of the plasma arc cutting power supply 600 passes through the relay 860, and then controls the CNC cutting solenoid valve body 900 and the single-connected solenoid valve 2 960. When started in the CNC cutting mode, the signal of the control solenoid valve body 900 and the single-connected solenoid valve 2 960 passes through the relay 860 to control the solenoid valve body 900 and the single-connected solenoid valve 2 960 to work, so that the compressed air passes through the solenoid valve body 900 and the single-connected solenoid valve 2 960 and reaches the cutting device 200 through the gas-electric connector 631. At the same time, the small arc current passes through the contactor 850 to the CNC cutting gun on the cutting device 200 to form a small arc current arc, and the cutting device 200 starts to work and cut;

[0084] During manual cutting, the AC36V of the cutting device 200 is controlled through the cutting gun switching switch 621. The switch is turned down to the manual cutting mode, and the control relay 2 880 and the AC contactor 2 870 are closed. The signal of the control solenoid valve body 900 and the single solenoid valve 1 950 on the circuit board of the plasma arc cutting power supply 600 controls the manual cutting solenoid valve body 900 and the single solenoid valve 1 950 through the relay 2 880. When the handheld cutting gun 700 switch is pressed in the manual cutting mode, the signal of the control solenoid valve body 900 and the single solenoid valve 1 950 on the control panel 610 controls the solenoid valve body 900 and the single solenoid valve 1 950 through the relay 2 880, so that the compressed air passes through the solenoid valve body 900 and the single solenoid valve 1 950 to the handheld cutting gun 700. At the same time, the small arc current passes through the contactor 2 870 to the handheld cutting gun 700 to form a small arc current arc, and the handheld cutting gun 700 starts cutting.

[0085] This solution adopts a dual-channel switching control method to disconnect and make the compressed air and small arc current of CNC cutting and manual cutting independent. When working in any mode, there is no compressed air and small arc current on the cutting gun of the other mode, and there will be no current and burning of the cutting gun in one mode when the other mode is working.

[0086] The working principle of the plasma arc cutting machine is as follows: the workbench 100 is equipped with a support grid 110 for supporting the workpiece to be cut, and the cutting device 200 is controlled and driven by the cutting control device 210, and the linear motor 1 320 and the linear motor 2 330 are used to realize the movement in the X-axis and Y-axis directions for automatic cutting. The linear motor 1 320 drives the mounting slide 310 to move forward and backward, while the linear motor 2 330 is installed on the mounting slide 310 and is responsible for the horizontal movement. The two work together to enable the cutting device 200 to move accurately on the workbench 100. In addition, the electric telescopic rod further provides adjustment in the Z-axis direction.

[0087] The plasma arc cutting power supply 600 provides the necessary high current and voltage for the cutting process, and is provided with a storage slot cavity 601 for assembling a dual-channel switching component, including components such as contactor 1 850, relay 1 860, contactor 2 870 and relay 2 880, as well as a drive board 810, a gun protection switch board 820, a transformer 830 and a small arc board 840. In the numerical control mode, these components give signals to relay 1 860 and contactor 1 850 through the control panel 610 to start the arc and start cutting; while in the manual cutting mode, they are operated by sending signals to relay 2 880 and contactor 2 870. At the same time, the solenoid valve body 900 and its matching single-connected solenoid valve 1 950 and single-connected solenoid valve 2 960 ensure that the gas circuits in the two cutting modes operate independently, ensuring that only the currently used cutting gun has compressed air supply whether in the numerical control or manual cutting mode, thereby avoiding safety hazards caused by misoperation. This design achieves efficient, safe and precise cutting of metal materials.

[0088] The electronic components and models used in the present invention can be determined according to actual needs.

[0089] The above are only embodiments of the present application and are not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0090] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A plasma arc cutting machine, characterized in that: include: A workbench (100) for supporting and positioning a workpiece to be cut; A cutting device (200) is used to cut a workpiece, and the cutting device (200) is driven by a linear drive assembly; A plasma arc cutting power supply (600) for providing stable and adjustable high current and voltage; At the same time, a dual-channel switching component is arranged above the inner cavity of the plasma arc cutting power supply (600) for switching back and forth between manual cutting and numerical control cutting; The dual-channel switching component includes contactor one (850), relay one (860), contactor two (870) and relay two (880), wherein contactor one (850) and relay one (860) are used in conjunction with each other, and contactor two (870) and relay two (880) are used in conjunction with each other.

2. The plasma arc cutting machine according to claim 1, characterized in that: The inner cavity of the workbench (100) is equipped with a support grid (110), which is used in conjunction with the workbench (100) to support a workpiece to be cut; At the same time, the cutting device (200) is driven and controlled by a cutting control device (210) disposed above the workbench (100).

3. The plasma arc cutting machine according to claim 2, characterized in that: The linear drive assembly includes a linear motor 1 (320) and a linear motor 2 (330), which are used in conjunction with each other; A main support bracket (300) and an auxiliary support bracket (301) are respectively mounted on the left and right ends of the workbench (100), and the main support bracket (300) is mounted on the end of the workbench (100); The output end of the linear motor 1 (320) is installed with a mounting slide (310), wherein the right side of the mounting slide (310) is slidably mounted on the end of the auxiliary support bracket (301) through a support plate, and the linear motor 2 (330) is installed to the end of the mounting slide (310).

4. The plasma arc cutting machine according to claim 3, characterized in that: In order to store the plasma arc cutting power supply (600), a loading trolley (500) is arranged on one side of the plasma arc cutting power supply (600), and the front side of the inner cavity of the loading trolley (500) is divided into two upper and lower spaces by a partition, the plasma arc cutting power supply (600) is arranged above the inner cavity of the loading trolley (500), and a water tank (400) is arranged below the inner cavity of the plasma arc cutting power supply (600).

5. The plasma arc cutting machine according to claim 4, characterized in that: A receiving slot cavity (601) is provided at the end of the inner cavity of the plasma arc cutting power source (600), and the receiving slot cavity (601) is used to assemble the dual-channel switching component; At the same time, a material collecting chamber (602) is provided at the front side of the inner cavity of the plasma arc cutting power source (600), and a distribution conversion mechanism is provided in the material collecting chamber (602) for controlling the distribution of compressed air to manual cutting or numerical control cutting.

6. The plasma arc cutting machine according to claim 5, characterized in that: The dual-channel switching assembly further comprises a driving board (810), a gun protection switch board (820), a transformer (830) and a small arc board (840), wherein a loading panel (800) is installed at the bottom of the inner cavity of the storage slot cavity (601), and the driving board (810), the gun protection switch board (820), the transformer (830), the small arc board (840), a contactor 1 (850), a relay 1 (860), a contactor 2 (870) and a relay 2 (880) are integrated and installed at the end of the loading panel (800).

7. The plasma arc cutting machine according to claim 6, characterized in that: A control panel (610) is installed at the end of the front side of the plasma arc cutting power supply (600), and a plug-in panel (630) is installed at the bottom of the front side of the plasma arc cutting power supply (600), wherein a gas-electricity connector 1 (631), a gas-electricity connector 2 (632), a water-electricity connector (633) and a return water connector (634) are installed on the surface of the plug-in panel (630).

8. The plasma arc cutting machine according to claim 7, characterized in that: A hand-held cutting gun (700) is provided at the output end of the second gas-electric connector (632), wherein the hand-held cutting gun (700) is plugged into the second gas-electric connector (632) via a connecting line (710).

9. The plasma arc cutting machine according to claim 8, characterized in that: A connection panel (620) is installed on the rear side of the plasma arc cutting power supply (600), wherein a cutting torch switching switch (621) and a water tank power supply (622) are installed on the connection panel (620), wherein the cutting torch switching switch (621) is used to switch between manual cutting and numerical control cutting.

10. The plasma arc cutting machine according to claim 9, characterized in that: The adjustment and conversion mechanism comprises an electromagnetic valve body (900), and a pipeline 1 (910) is installed at the input end of the electromagnetic valve body (900), and a pipeline 2 (920) is installed at the output end of the electromagnetic valve body (900), wherein a three-way pipe (930) is installed at the output end of the pipeline 2 (920); At the same time, the interfaces of the three-way pipe (930) are respectively connected to the air pipe and pipeline three (940), wherein the surface of the air pipe is installed with a single-connected solenoid valve two (960), and the surface of pipeline three (940) is installed with a single-connected solenoid valve one (950).

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