A flame cutting machine

Abstract

The present invention relates to the technical field of steel plate cutting, and discloses a flame cutting machine. The flame cutting machine comprises a cutting machine body, which comprises a frame, a driving assembly, a moving mechanism and a cutting part. The driving assembly comprises a first moving assembly, a driving part and a connecting piece. The connecting piece is movably arranged on the frame and fixedly connected to the first moving assembly. The driving part can drive the first moving assembly and drive the connecting piece to move along the length direction of the frame. The moving mechanism is located on one side of the first moving assembly. The moving mechanism comprises at least two second moving assemblies. At least two first moving assemblies are arranged side by side along the length direction of the frame and are slidably connected to the frame. Each second moving assembly can be selectively connected to the connecting piece. The first moving assembly and the second moving assembly are both provided with a cutting part. The flame cutting machine provided by the present invention only needs to be provided with one driving part to realize the automatic adjustment of the spacing between the cutting parts, which has high precision and saves costs.

Description

Technical Field

[0001] The invention relates to the technical field of steel plate cutting, and in particular to a flame cutting machine. Background Art

[0002] Flame cutting machine is a kind of cutting equipment that uses gas and oxygen to cut metal materials. It is mainly used in heavy industry. Steel plate is a flat steel material made by pouring molten steel and pressing it after cooling. It can be directly rolled or cut from wide steel strips. When processing steel plates, it is often necessary to use a flame cutting machine to cut the steel plates. When using a flame cutting machine, it usually uses a digital program to drive the machine tool movement, equipped with a flame cutting system, so that the CNC system controls the operation of the flame cutting machine system, and cuts metal materials such as steel plates. Its cutting ability is relatively strong.

[0003] When using flame cutting machines in current technology, in order to improve cutting efficiency, multiple moving components are generally installed on the cutting machine body, and each moving component is installed with a cutting part, and multiple cutting parts are used to cut the steel plate at the same time. In order to meet the cutting requirements of different steel plates, it is usually necessary to adjust the distance between the moving components to ensure the distance between the cutting parts so that the width of the cut steel plate meets the set value. However, in order to adjust the distance between the moving components of the flame cutting machine in the prior art, the operator usually manually pushes the moving components to space them, which has low precision and low efficiency; or a separate driving structure is set on each moving component for driving, resulting in a relatively complex structure of the entire flame cutting machine, a large space occupation, and a high manufacturing cost.

[0004] In order to solve the above problems, it is urgent to provide a flame cutting machine to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a flame cutting machine which can realize automatic adjustment of the distance between cutting parts by only setting one driving structure, with high precision and cost saving.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] A flame cutting machine comprises a cutting machine body, wherein the cutting machine body comprises:

[0008] frame;

[0009] A driving assembly, comprising a first moving assembly, a driving part and a connecting piece, wherein the connecting piece is movably arranged on the frame and fixedly connected to the first moving assembly, and the driving part can drive the first moving assembly and drive the connecting piece to move along the length direction of the frame;

[0010] A moving mechanism is located on one side of the first moving assembly, the moving mechanism includes at least two second moving assemblies, the at least two first moving assemblies are arranged side by side along the length direction of the frame and are slidably connected to the frame, and each second moving assembly can be selectively connected to the connecting member;

[0011] Cutting part: both the first movable assembly and the second movable assembly are provided with cutting parts.

[0012] Optionally, the first moving assembly and the second moving assembly both include:

[0013] Mounting frame;

[0014] A first driving member is disposed on the mounting frame;

[0015] The transmission part, the first driving member can drive the cutting part to rise and fall through the transmission part.

[0016] Optionally, the transmission unit includes:

[0017] A lead screw connected to an output end of the first driving member;

[0018] Nut, screwed onto the lead screw;

[0019] A mounting structure connected to the nut, and a cutting portion is disposed on the mounting structure;

[0020] A guide rod, a guide hole is arranged on the mounting structure, one end of the guide rod is inserted into the guide hole and both ends are fixed on the mounting frame, and the mounting structure can slide relative to the guide rod.

[0021] Optionally, the second moving component further includes:

[0022] A second driving member is disposed on the mounting frame;

[0023] A first pressing part, one end of which is connected to an output end of the second driving member;

[0024] The second clamping part is arranged on the mounting frame and is arranged opposite to the free end of the first clamping part. The first clamping part and the second clamping part are respectively located on both sides of the connecting member. The second driving member can drive the first clamping part to move in a direction close to the second clamping part to clamp the connecting member onto the second clamping part.

[0025] Optionally, the first moving assembly and the second moving assembly also include a third driving member and a third pressing part, the third driving member is arranged on the mounting frame, and the output end of the third driving member is connected to the third pressing part to drive the third pressing part to press the frame.

[0026] Optionally, a sliding assembly is further included, and the sliding assembly includes:

[0027] A slide rail is arranged on the rack and extends along the length direction of the rack;

[0028] The slider is arranged on the mounting frame, and the slider is slidably connected to the slide rail.

[0029] Optionally, there are two sliders, which are arranged on the mounting frame at intervals along the vertical direction, and each slider corresponds to a slide rail.

[0030] Optionally, the connecting member is an annular structure, and a plurality of pulleys are rotatably arranged at intervals on the frame, and the plurality of pulleys jointly tension the connecting member.

[0031] Optionally, a limiter assembly is further included, and the limiter assembly includes:

[0032] A proximity switch is disposed on a second moving component away from the first moving component;

[0033] The sensor is arranged on the frame. When the sensor senses the proximity switch, the first moving component and the second moving component both stop moving.

[0034] Optionally, a buffer is provided on the frame.

[0035] The beneficial effects of the present invention are:

[0036] The flame cutting machine provided by the present invention includes a driving component and a moving mechanism, wherein the driving component can drive the moving mechanism to automatically space, wherein the driving component includes a first moving component, a driving part and a connecting piece, and the moving mechanism includes at least two second moving components, and the first moving component and each second moving component are connected with a cutting part to cut the steel plate; the connecting piece is always fixedly connected to the first moving component, the driving part can drive the first moving component and drive the connecting piece to move, and each second moving component can be selectively connected to the connecting piece to use the connecting piece to drive the second moving component to move, so as to adjust the spacing between each group of adjacent moving components, and then adjust the distance between each cutting part, so that the width of the cut steel plate meets the set value. The flame cutting machine only needs to set a driving part to realize automatic spacing between each cutting part, with high adjustment accuracy and cost saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly and easily, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. The drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0038] Figure 1 is a schematic structural diagram of a cutting machine body provided by an embodiment of the present invention;

[0039] Figure 2 is a schematic structural diagram of a first moving assembly provided by an embodiment of the present invention;

[0040] Figure 3 is a schematic structural diagram of a second moving assembly provided by an embodiment of the present invention at a first viewing angle;

[0041] Figure 4 is a schematic structural diagram of a second moving assembly provided by an embodiment of the present invention at a second viewing angle;

[0042] Figure 5 It is a structural schematic diagram of the second moving component provided by an embodiment of the present invention at a third viewing angle.

[0043] In the figure:

[0044] 1. Frame;

[0045] 2. Moving mechanism; 21. Second moving assembly; 211. Mounting frame; 212. First driving member; 213. Transmission part; 2131. Lead screw; 2132. Nut; 2133. Mounting structure; 21331. Moving plate; 21332. Moving rod; 214. Second driving member; 215. First pressing part; 216. Second pressing part; 217. Third driving member; 218. Third pressing part; 219. Guide rod; 220. Bearing;

[0046] 3. driving assembly; 31. first moving assembly; 32. connecting member; 33. driving part; 331. fourth driving member; 332. gear;

[0047] 4. Sliding assembly; 41. Slide rail; 42. Sliding block;

[0048] 5. Limiting assembly; 51. Proximity switch; 52. Sensor;

[0049] 6. Buffer parts;

[0050] 7. Cutting department. DETAILED DESCRIPTION

[0051] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0052] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection 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 the present invention can be understood according to specific circumstances.

[0053] In the present invention, 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.

[0054] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0055] Figure 1 A schematic diagram showing the structure of the cutting machine body provided in this embodiment is shown; Figure 2 A schematic diagram showing the structure of a first moving assembly provided in this embodiment is shown; Figure 3 A schematic diagram showing the structure of the second moving assembly provided by this embodiment at a first viewing angle; Figure 4 A schematic diagram showing the structure of the second moving assembly provided by this embodiment at a second viewing angle; Figure 5 The schematic diagram of the structure of the second moving assembly provided in the present embodiment under the third viewing angle is shown. The present embodiment provides a flame cutting machine, including an equipment frame and a cutting machine body, the cutting machine body is slidably arranged on the equipment frame, a steel plate is placed on the equipment frame, and the cutting machine body includes a plurality of cutting parts 7, and the plurality of cutting parts 7 can cut the steel plate into different widths. In the prior art, in order to adjust the distance between the cutting parts 7, a separate driving structure is usually provided on each cutting part 7 for driving, resulting in a relatively complex structure of the entire flame cutting machine, a large occupied space, and a high manufacturing cost.

[0056] To solve the above problems, Figure 1 and Figure 2 As shown, the cutting machine body provided in this embodiment includes a frame 1, a driving assembly 3, a moving mechanism 2 and a cutting part 7. The driving assembly 3 includes a first moving assembly 31, a driving part 33 and a connecting member 32. The connecting member 32 is movably arranged on the frame 1 and is fixedly connected to the first moving assembly 31. The driving part 33 can drive the first moving assembly 31 and drive the connecting member 32 to move along the length direction of the frame 1 (i.e. Figure 1 The moving mechanism 2 is located on one side of the first moving assembly 31, and the moving mechanism 2 includes at least two second moving assemblies 21. The at least two first moving assemblies 31 are arranged side by side along the length direction of the frame 1 and are slidably connected to the frame 1. Each second moving assembly 21 can be selectively connected to the connecting member 32; the first moving assembly 31 and the second moving assembly 21 are both provided with a cutting portion 7.

[0057] Specifically, combined Figure 1 Taking the two second movable components 21 as an example, when the cutting parts 7 are automatically spaced, the driving part 33 first drives the first movable component 31 and drives the connecting member 32 to move to the left, and at the same time, the first movable component 31 pushes the two second movable components 21 to move to the left together. When the leftmost second movable component 21 moves to the left end of the frame 1, the first movable component 31 and the second movable component 21 both stop moving. At this time, there is no gap between the movable components; thereafter, the two second movable components 21 are connected to the connecting member 32, and the driving part 33 drives the first movable component 31 to drive the connecting member 32 to move to the right. At the same time, the connecting member 32 drives the two second movable components 21 to move to the right together. When they move to a suitable position above the piece to be cut, the two second movable components 21 release the connecting member 32, and the driving part 33 drives the first movable component 21 again. 31 moves to the right by a first preset distance and then stops. At this time, the spacing between the first moving component 31 and the second moving component 21 on the right side is exactly the size of the first section of the steel plate to be cut; then, the second moving component 21 on the far right is connected to the connecting member 32, and the driving unit 33 drives the first moving component 31 to drive the second moving component 21 on the far right to move to the right by a second preset distance and then stop. At this time, the spacing between the two second moving components 21 is exactly the size of the second section of the steel plate to be cut; then, the two second moving components 21 are connected to the connecting member 32 at the same time, and the driving unit 33 drives the first moving component 31 to drive the two second moving components 21 to move to the right by a third preset distance and then stop, so that the three cutting parts 7 are respectively located at the preset cutting positions, and the automatic spacing between the three moving components can be completed. According to different cutting requirements, the first preset distance and the second preset distance can be equal or unequal.

[0058] The flame cutting machine provided in this embodiment only needs to set up one driving part 33 to realize automatic spacing between each moving component, and then realize automatic spacing between each cutting part 7, so that the width of the steel plate after cutting meets the set value, the adjustment accuracy is high and the manufacturing cost is saved. It has been verified that the spacing time of 12 moving components is 30 seconds, so the automatic spacing efficiency of the flame cutting machine is relatively high.

[0059] Preferably, the connecting member 32 is an annular structure, and a plurality of pulleys are arranged on the frame 1 at intervals and rotated, and the plurality of pulleys jointly tension the connecting member 32. This arrangement is simple in structure, and makes the entire transmission process stable and reliable. In this embodiment, the connecting member 32 is preferably a steel belt, which has sufficient strength and rigidity, a long service life, and good wear resistance.

[0060] Furthermore, if Figure 1 As shown, the cutting machine body in this embodiment also includes a limit assembly 5, and the limit assembly 5 includes a proximity switch 51 and a sensor 52. The proximity switch 51 is arranged on the second movable assembly 21 away from the first movable assembly 31; the sensor 52 is arranged on the frame 1, and when the sensor 52 senses the proximity switch 51, the first movable assembly 31 and the second movable assembly 21 both stop moving. Specifically, the cutting machine body also includes a controller, and the sensor 52 and the driving part 33 are both electrically connected to the controller. When the sensor 52 senses the proximity switch 51, the sensor 52 can transmit the signal to the controller. After receiving the signal, the controller can control the driving part 33 to stop moving, thereby causing the first movable assembly 31 and the second movable assembly 21 to stop moving. This limiting method has a simple structure, low cost and fast response speed.

[0061] Preferably, if Figure 1 As shown, a buffer 6 is also provided on the frame 1. In this embodiment, there are two buffers 6, which are respectively located on both sides of the frame 1 and are respectively used to buffer the movement of the first moving component 31 and the second moving component 21. Before the sensor 52 senses the proximity switch 51, the leftmost second moving component 21 first abuts against the buffer 6, and the buffer 6 can provide a buffer force to the right for the second moving component 21, so that there is no gap between the moving components. In this embodiment, the buffer 6 is preferably an oil pressure buffer, which has a better buffering effect and a more stable buffering.

[0062] Furthermore, if Figure 1 and Figure 5As shown, the cutting machine body in this embodiment further includes a sliding assembly 4, which includes a slide rail 41 and a slider 42. The slide rail 41 is arranged on the frame 1 and extends along the length direction of the frame 1; the first moving assembly 31 and the second moving assembly 21 are both provided with a slider 4, and the slider 42 is slidably connected to the slide rail 41. This arrangement has a simple structure, and the cooperation between the slider 42 and the slide rail 41 can guide the movement of the first moving assembly 31 and the second moving assembly 21 along the length direction of the frame 1, and ensure the stability of the sliding process, and finally realize automatic spacing.

[0063] Preferably, there are two sliders 42, which are spaced apart in the vertical direction, and each slider 42 corresponds to a slide rail 41. This arrangement makes the sliding process of the first moving assembly 31 and the second moving assembly 21 along the frame 1 smoother, thereby improving the stability of the automatic spacing process.

[0064] Specifically, if Figure 2 As shown, the driving part 33 includes a fourth driving member 331 and a gear 332. The fourth driving member 331 is arranged on the first moving assembly 31. The output end of the fourth driving member 331 is connected to the gear 332. A rack is arranged on the frame 1. The rack extends along the length direction of the frame 1. The gear 332 is meshed with the rack. The fourth driving member 331 can drive the gear 332 to rotate. The gear 332 is meshed with the rack to drive the first moving assembly 31 to move in the left and right directions. This transmission mode is stable and reliable, with large transmission power and long service life. In this embodiment, the fourth driving member is preferably a motor.

[0065] Furthermore, if Figure 3 As shown, the second moving assembly 21 includes a mounting frame 211, a first driving member 212 and a transmission part 213. The first driving member 212 is arranged on the mounting frame 211; the first driving member 212 can drive the cutting part 7 to rise and fall through the transmission part 213. Through this arrangement, the distance between the cutting part 7 and the steel plate can be adjusted to cut steel plates of different thicknesses, and the versatility is strong.

[0066] Specifically, if Figure 3 and Figure 4As shown, the transmission part 213 includes a lead screw 2131, a nut 2132, a mounting structure 2133 and a guide rod 219. The lead screw 2131 is connected to the output end of the first driving member 212; the nut 2132 is screwed on the lead screw 2131; the mounting structure 2133 is connected to the nut 2132, and a guide hole is provided on the mounting structure 2133. One end of the guide rod 219 is inserted into the guide hole and both ends are fixed on the mounting frame 211. The mounting structure 2133 can slide relative to the guide rod 219, and the cutting part 7 is arranged on the mounting structure 2133. Among them, a bearing 220 is also sleeved between the guide rod 219 and the guide hole. In the process of the mounting structure 2133 moving up and down, the guide rod 219 and the bearing 220 provide a certain guiding effect for the mounting structure 2133, ensuring the stability of the mounting structure 2133 in the process of moving up and down.

[0067] In this embodiment, the first driving member 212 is preferably a motor, the output end of the motor is connected to the lead screw 2131, the motor drives the lead screw 2131 to rotate, and drives the nut 2132 to drive the mounting structure 2133 to move up and down relative to the lead screw 2131, thereby driving the cutting part 7 to move up and down. This transmission method has a large bearing capacity, high transmission accuracy, low noise and high transmission efficiency.

[0068] Furthermore, if Figure 3 As shown, the mounting structure 2133 specifically includes a moving plate 21331 and a moving rod 21332, the moving plate 21331 and the nut 2132 are connected, one end of the moving rod 21332 passes through the lower end plate of the mounting frame 211 and is connected to the moving plate 21331, the moving plate 21331 and the moving rod 21332 can slide up and down relative to the mounting frame 211, and the other end of the moving rod 21332 is connected to a clamp, on which a cutting part 7 is installed. When the first driving member 212 drives the lead screw 2131 to rotate, the nut 2132 drives the moving plate 21331 and the moving rod 21332 to move up and down relative to the mounting frame 211 to adjust the distance between the cutting part 7 and the steel plate. By providing the moving rod 21332, the installation of the clamp is more convenient, and the stable connection of the cutting part 7 is achieved, so as to improve the stability of the cutting part 7 during the cutting process.

[0069] Furthermore, if Figure 3 and Figure 5As shown, the second moving component 21 also includes a second driving member 214, a first clamping portion 215 and a second clamping portion 216. The second driving member 214 is arranged on the mounting frame 211; one end of the first clamping portion 215 is connected to the output end of the second driving member 214; the second clamping portion 216 is arranged on the mounting frame 211, and is arranged opposite to the free end of the first clamping portion 215. The first clamping portion 215 and the second clamping portion 216 are respectively located on both sides of the connecting member 32. The second driving member 214 can drive the first clamping portion 215 to move in a direction close to the second clamping portion 216 to clamp the connecting member 32 on the second clamping portion 216. When the first moving assembly 21 needs to drive the corresponding second moving assembly 21 to move through the connecting member 32 to achieve the row spacing, the second driving member 214 only needs to drive the first pressing part 215 to move in the direction close to the second pressing part 216, and the connecting member 32 is pressed on the second pressing part 216, so that the connecting member 32 can be clamped and moved accordingly, which is easy to operate. In this embodiment, the second driving member 214 is preferably a cylinder. This driving method has a simple structure, is easy to operate, stable and reliable, has high control accuracy and high driving efficiency.

[0070] Preferably, the first clamping portion 215 is made of nylon. When the first clamping portion 215 and the second clamping portion 216 clamp the connecting piece 32, this arrangement can increase the friction between the first clamping portion 215 and the connecting piece 32, thereby ensuring a more stable clamping.

[0071] Furthermore, if Figure 3 and Figure 5 As shown, the second moving assembly 21 also includes a third driving member 217 and a third pressing portion 218. The third driving member 217 is arranged on the mounting frame 211, and the output end of the third driving member 217 is connected to the third pressing portion 218 to drive the third pressing portion 218 to press the frame 1. This arrangement can prevent the second moving assembly 21 from sliding relative to the frame 1 during the automatic spacing process and affecting the spacing accuracy. In this embodiment, the third driving member 217 is preferably a cylinder. This driving method has a simple structure, is easy to operate, is stable and reliable, has high control accuracy and high driving efficiency.

[0072] It should be noted that the specific structure of the first movable component 31 and the specific structure of the second movable component 21 are roughly the same. The difference is that the second driving member 214, the first clamping portion 215 and the second clamping portion 216 are not provided on the mounting frame 211 of the first movable component 31, while a connecting portion is provided on the mounting frame 211 of the first movable component 31, and the connecting portion is always fixedly connected to the connecting member 32. The specific structure of the connecting portion is not limited in this embodiment, and it may be a clamping structure or other connecting portions that can be fixedly connected to the connecting member 32, all of which are within the protection scope of this embodiment.

[0073] Combine the following Figure 1-Figure 5 The automatic spacing process of the cutting machine body provided in this embodiment is briefly described as follows:

[0074] (1) The driving unit 33 drives the first moving component 31 and drives the connecting member 32 to move to the left. At the same time, the first moving component 31 drives all the second moving components 21 to move together. When the proximity switch 51 on the leftmost second moving component 21 abuts against the sensor 52, the first moving component 31 and the second moving component 21 both stop moving. At this time, there is no gap between the moving components.

[0075] (2) Each second moving assembly 21 clamps the connecting member 32, and the driving unit 33 drives the first moving assembly 31 to drive the connecting member 32 to move to the right. At the same time, the connecting member 32 drives all the second moving assemblies 21 to move together, and when they move to a suitable position above the workpiece to be cut, they stop moving;

[0076] (3) All the second moving components 21 release the connecting member 32; the driving unit 33 drives the first moving component 31 to move rightward by a first preset distance and then stops. At this time, the distance between the second moving component 21 and the first moving component 31 is the first preset distance, which is equal to the size of the first segment of the cut piece on the piece to be cut;

[0077] (4) The rightmost second movable assembly 21 clamps the connecting member 32, and the driving unit 33 drives the first movable assembly 31 to drive the rightmost second movable assembly 21 to move rightward by a second preset distance and then stop. At this time, the distance between the first second movable assembly 21 from the right and the second second movable assembly 21 from the right is the second preset distance, and the second preset distance is equal to the size of the second segment of the cut piece on the piece to be cut;

[0078] (5) The first second moving assembly 21 from the right and the second second moving assembly 21 from the right clamp the connecting member 32 at the same time, and the driving unit 33 drives the first moving assembly 31 to drive the two second moving assemblies 21 to move rightward by a third preset distance and then stop. At this time, the distance between the second second moving assembly 21 from the right and the third second moving assembly 21 from the right is the third preset distance, and the third preset distance is equal to the size of the third segment of the cut piece on the piece to be cut;

[0079] (6) Similarly, the automatic spacing between the moving components can be completed.

[0080] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A flame cutting machine, characterized in that: The invention comprises a cutting machine body, wherein the cutting machine body comprises: Rack (1); A driving assembly (3), comprising a first moving assembly (31), a driving unit (33) and a connecting member (32), wherein the connecting member (32) is movably arranged on the frame (1) and is fixedly connected to the first moving assembly (31), and the driving unit (33) is capable of driving the first moving assembly (31) and driving the connecting member (32) to move along the length direction of the frame (1); A moving mechanism (2) is located on one side of the first moving assembly (31), the moving mechanism (2) comprising at least two second moving assemblies (21), the at least two second moving assemblies (21) being arranged side by side along the length direction of the frame (1) and slidably connected to the frame (1), each of the second moving assemblies (21) being selectively connectable to the connecting member (32); A cutting part (7), wherein the first moving component (31) and the second moving component (21) are both provided with the cutting part (7); The driving part (33) comprises a fourth driving member (331) and a gear (332); the fourth driving member (331) is arranged on the first moving assembly (31); an output end of the fourth driving member (331) is connected to the gear (332); a rack is arranged on the frame (1); the rack extends along the length direction of the frame (1); and the gear (332) is meshed with the rack.

2. The flame cutting machine according to claim 1, characterized in that: The first moving assembly (31) and the second moving assembly (21) both include: Mounting frame (211); A first driving member (212) is disposed on the mounting frame (211); A transmission part (213), wherein the first driving member (212) can drive the cutting part (7) to rise and fall via the transmission part (213).

3. The flame cutting machine according to claim 2, characterized in that: The transmission part (213) comprises: A lead screw (2131) connected to an output end of the first driving member (212); A nut (2132) screwed onto the lead screw (2131); A mounting structure (2133) connected to the nut (2132), and the cutting portion (7) is arranged on the mounting structure (2133); A guide rod (219), a guide hole is provided on the mounting structure (2133), one end of the guide rod (219) is inserted into the guide hole and both ends are fixed to the mounting frame (211), and the mounting structure (2133) can slide relative to the guide rod (219).

4. The flame cutting machine according to claim 2, characterized in that: The second moving component (21) further comprises: A second driving member (214) is disposed on the mounting frame (211); A first pressing portion (215), one end of the first pressing portion (215) being connected to an output end of the second driving member (214); The second clamping portion (216) is arranged on the mounting frame (211) and is arranged opposite to the free end of the first clamping portion (215). The first clamping portion (215) and the second clamping portion (216) are respectively located on both sides of the connecting member (32). The second driving member (214) can drive the first clamping portion (215) to move in a direction close to the second clamping portion (216) so as to clamp the connecting member (32) onto the second clamping portion (216).

5. The flame cutting machine according to claim 2, characterized in that: The first moving assembly (31) and the second moving assembly (21) both further include a third driving member (217) and a third pressing portion (218); the third driving member (217) is disposed on the mounting frame (211); an output end of the third driving member (217) is connected to the third pressing portion (218) to drive the third pressing portion (218) to press the frame (1).

6. The flame cutting machine according to claim 2, characterized in that: It also includes a sliding assembly (4), wherein the sliding assembly (4) includes: A slide rail (41) is arranged on the frame (1) and extends along the length direction of the frame (1); A sliding block (42) is arranged on the mounting frame (211), and the sliding block (42) is slidably connected to the sliding rail (41).

7. The flame cutting machine according to claim 6, characterized in that: There are two sliders (42), and the two sliders (42) are arranged on the mounting frame (211) at intervals in the vertical direction, and each slider (42) corresponds to one slide rail (41).

8. The flame cutting machine according to any one of claims 1 to 7, characterized in that: The connecting member (32) is an annular structure, and a plurality of pulleys are arranged on the frame (1) at intervals and in a rotatable manner, and the plurality of pulleys jointly tension the connecting member (32).

9. The flame cutting machine according to any one of claims 1 to 7, characterized in that: It also includes a limiting component (5), wherein the limiting component (5) includes: a proximity switch (51) disposed on the second moving component (21) away from the first moving component (31); The sensor (52) is arranged on the frame (1), and when the sensor (52) senses the proximity switch (51), the first moving component (31) and the second moving component (21) both stop moving.

10. The flame cutting machine according to any one of claims 1 to 7, characterized in that: A buffer member (6) is provided on the frame (1).

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