Flame cutting device capable of adjusting cutting angle

Abstract

The invention relates to the technical field of flame cutting, in particular to a flame cutting device capable of adjusting a cutting angle, which comprises a mounting seat, sliding rails arranged on two sides of the mounting seat respectively, a sliding frame arranged on the sliding rails in a sliding manner, and a measuring part mounted on the sliding frame and used for measuring thickness information of a steel plate before cutting; the gas cutting spray gun is arranged on the sliding frame, and the sliding frame is connected with the gas cutting spray gun through an adjusting piece and used for adjusting the inclination angle of the gas cutting spray gun relative to the surface of the steel plate; the driving part is arranged at one end of the sliding rail and is used for driving the sliding frame to slide back and forth along the sliding rail; and the transmission part is arranged between the sliding frame and the adjusting part and is used for driving the adjusting part to change the angle of the spray gun.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flame cutting, in particular to a flame cutting device capable of adjusting cutting angle. BACKGROUND

[0002] As a kind of hot cutting process commonly used in steel plate processing, flame cutting is widely used in shipbuilding, steel structure processing, heavy equipment and other fields. The existing flame cutting equipment adopts the mode of fixed angle spray gun and single cutting track to cooperate with the straight line or simple contour hot cutting of steel plate. In order to ensure the cutting quality, the thickness of the steel plate is usually required to be consistent, and the height and angle of the spray gun are adjusted in advance and remain unchanged.

[0003] However, in actual application, the steel plate to be processed often has thickness variation or uneven surface, etc. If the angle between the nozzle and the surface of the steel plate is not adjusted in time, it will not only affect the incidence of flame on the steel plate, but also easily cause the cutting line to deviate, slag to accumulate or not to be completely cut through, thereby affecting the overall cutting quality. In addition, the change of the angle of the nozzle during cutting will cause the change of its speed relative to the surface of the steel plate, thereby causing the local cutting speed to be too fast or too slow, affecting the neatness of the cut.

[0004] On the other hand, the existing flame cutting device is generally extensive in the control of steel plate conveying. The steel plate is continuously conveyed by rotating rollers or chain structure, but lacks the linkage mechanism between the spray gun cutting process. When the gas cutting angle is adjusted or the position of the spray gun changes, if the conveying speed of the steel plate is not adjusted synchronously, it will cause the cutting rhythm to be inconsistent, and the phenomena of under-cutting or over-cutting will occur, especially in large quantities and various specifications of steel plate cutting tasks. SUMMARY

[0005] The purpose of the present application is to provide a flame cutting device capable of adjusting cutting angle to solve the problems raised in the background.

[0006] In order to achieve the above purpose, the present application provides the following technical scheme: a flame cutting device capable of adjusting cutting angle, comprising a mounting seat, sliding rails respectively arranged on both sides of the mounting seat, a sliding frame slidingly arranged on the sliding rails, a measuring member mounted on the sliding frame for measuring the thickness information of the steel plate before cutting; a gas cutting spray gun arranged on the sliding frame, the sliding frame and the gas cutting spray gun are connected through an adjusting member for adjusting the inclination angle of the gas cutting spray gun relative to the surface of the steel plate; a driving part arranged at one end of the sliding rail for driving the sliding frame to reciprocally slide along the sliding rail; a transmission part arranged between the sliding frame and the adjusting member for driving the adjusting member to change the angle of the spray gun.

[0007] Preferably, the transmission part comprises a first rack arranged on the sliding frame, a gear wheel rotatably arranged on the mounting base, a second rack slidably arranged on the mounting base, and a first elastic telescopic rod arranged between the adjusting member and the mounting frame. The first rack is engaged with the gear wheel, the gear wheel is engaged with the second rack, and the second rack is connected with the adjusting member.

[0008] Preferably, the measuring member comprises a measuring rod arranged on the sliding frame, a measuring head arranged at the end of the measuring rod, and a second elastic telescopic rod arranged between the measuring rod and the measuring head. The measuring head comprises a fixed block arranged at the end of the measuring rod, a first measuring wheel arranged on the fixed block, a floating block slidably sleeved on the measuring rod, and a second measuring wheel arranged on the floating block. A compression spring is arranged between the fixed block and the floating block. The first measuring wheel and the second measuring wheel are respectively in contact with and roll on the surface of the steel plate to obtain measurement information. First and second mounting plates are respectively arranged on the fixed block and the floating block, and a sensor is arranged between the first and second mounting plates to sense the relative position change between the fixed block and the floating block and determine the thickness of the steel plate.

[0009] Preferably, the adjusting member comprises a first connecting rod connected at one end with the first elastic telescopic rod and at the other end with the second rack, a mounting rod rotatably connected with the first connecting rod through a second connecting rod and a third connecting rod. A placing groove is formed in the mounting rod, and the gas cutting torch is placed in the placing groove.

[0010] Preferably, the mounting base is further provided with a clamping member for clamping and fixing the steel plate to be cut to prevent the steel plate from moving during cutting.

[0011] Preferably, the mounting base is provided with a speed adjusting member for adjusting the rotating speed of the rotating roller on the mounting base according to the position information of the sliding frame.

[0012] Preferably, the sliding rail is provided with a sensor for detecting the current position of the sliding frame on the sliding rail.

[0013] Preferably, the speed adjusting member comprises a reversing member arranged at one end of the sliding member for generating a movement perpendicular to the mounting base, an expanding member connected with the reversing member and capable of expanding or reducing the diameter of the expanding member, and a transmission box connected with the expanding member for controlling the rotating speed of the rotating roller. The expanding member and the transmission box are connected through a transmission belt.

[0014] Preferably, the mounting base is further provided with a tensioning member for adjusting the tightness of the transmission belt.

[0015] Advantages of the present application: 1. Automatic adjustment of cutting angle: By setting the sliding frame, adjusting piece and multi-stage connecting rod mechanism, combined with real-time detection of the thickness of the steel plate by the measuring piece, the cutting angle between the gas cutting lance and the steel plate surface can be automatically adjusted according to the thickness change of the steel plate, improving the cutting adaptability and precision.

[0016] 2. Ensure the relative stability of the nozzle height and the steel plate surface: Through the coordinated design of the structure, especially the length compensation effect of the elastic telescopic rod on the connecting rod, the height of the nozzle relative to the steel plate remains basically constant during the angle adjustment process, avoiding the decline of cutting quality caused by height deviation.

[0017] 3. Maintain the relative cutting speed stable: The present application drives the sliding frame to slide through the driving part, compensates for the change of the horizontal speed component of the nozzle caused by the change of the angle of the lance, so that the cutting speed of the nozzle relative to the steel plate remains consistent, further improving the uniformity of the cutting line and the quality of the cut.

[0018] 4. Linkage control of feeding speed and cutting process: By setting the sliding rail position sensor, the sliding frame position information is fed back to the control system, combined with the rotating roller speed regulating device, the conveying speed of the steel plate can be dynamically adjusted, realizing the synchronization of feeding and cutting, avoiding overcutting, undercutting and other problems. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present application or prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only illustrate the present application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0020] Figure 1 It is a whole schematic diagram of the flame cutting device for adjusting cutting angle of the embodiment of the present application. Figure 2 It is a whole schematic diagram of the measuring piece of the flame cutting device for adjusting cutting angle of the embodiment of the present application. Figure 3 It is a whole schematic diagram of the flame cutting device for adjusting cutting angle of the embodiment of the present application. Figure 4 It is a whole schematic diagram of the flame cutting device for adjusting cutting angle of the embodiment of the present application. Figure 1 It is a local enlarged view of A in FIG. 5. Figure 5 It is a local enlarged view of B in FIG. 5. Figure 3 Figure 6 ​An enlarged view of a cutting angle adjusting flame cutting device according to an embodiment of the present application; Figure 7 A perspective view of an overall structure of a cutting angle adjusting flame cutting device according to an embodiment of the present application.

[0021] In the figure, the reference signs are: a mounting base (100), a sliding rail (101), a sliding frame (102), a measuring member (103), a measuring rod (103a), a measuring head (103b), a fixed block (103b-1), a first measuring wheel (103b-2), a floating block (103b-3), a second measuring wheel (103b-4), a compression spring (103b-5), a first mounting plate (103b-6), a second mounting plate (103b-7), a sensor (103b-8), a second elastic telescopic rod (103c), a gas cutting torch (104), an adjusting member (105), a first connecting rod (105a), a mounting rod (105b), a second connecting rod (105c), a third connecting rod (105d), a placing groove (105e), a driving part (106), a transmission part (107), a first rack (107a), a gear (107b), a second rack (107c), a first elastic telescopic rod, a clamping member (108), a speed adjusting member (109), a reversing member (109a), an inclined groove (109a-1), a through groove (109a-2), a rectangular rod (109a-3), a sliding rod (109a-4), an enlarged member (109b), a rectangular block (109b-1), a sliding hole (109b-2), a sliding rod (109b-3), a supporting block (109b-4), an elastic spring (109b-5), an X-shaped connecting rod, an expansion plate (109b-7), a transmission box (109c), a transmission belt (109d), a tensioning member (110), a sliding groove (110a), a sliding protrusion (110b), an elastic spring (110c). DETAILED DESCRIPTION

[0022] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application is further described in detail below with reference to specific embodiments.

[0023] It should be noted that, unless otherwise defined, technical terms or scientific terms used in the present application shall be understood as having the usual meaning as understood by a person with ordinary skill in the art to which the present application pertains. The terms "first", "second", and similar terms used in the present application do not indicate any order, number, or importance, but are only used to distinguish different components. The terms "include" or "contain" and similar terms mean that the elements or objects before the terms encompass the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connected" or "linked" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "upper", "lower", "left", "right", and the like are only used to indicate relative positional relationships, and when the absolute positions of the described objects change, the relative positional relationships can also change accordingly.

[0024] Embodiment 1 Please refer to Figures 1 to 7 The present application provides a technical solution: by providing a sliding rail 101 on the mounting seat 100, and slidingly arranging a sliding frame 102 on the sliding rail 101, the gas cutting torch 104 is provided with the ability to slide along the direction of movement of the workpiece; at the same time, an adjusting member 105 is arranged on the sliding frame 102, and the adjusting member 105 is connected to the sliding frame 102 through a transmission part 107, wherein the transmission part 107 includes a first rack 107a, a gear 107b, a second rack 107c, and a first elastic expansion rod 107d, which constitutes a transmission link that can drive the adjusting member 105 to rotate; in addition, a driving part 106 is also provided for driving the sliding frame 102 to reciprocate on the sliding rail 101.

[0025] Through the above-mentioned structure, when the thickness of the steel plate being cut changes, the measuring member 103 can detect the steel plate thickness information in real time, and drive the adjusting member 105 to rotate through the transmission part 107, so as to adjust the inclination angle between the gas cutting torch 104 and the steel plate. Through the angle adjustment function, the nozzle can always maintain the best incident angle with the surface of the steel plate, so as to improve the cutting quality.

[0026] It is worth noting that when the angle of the torch changes, if the position is not compensated, the position of the nozzle in space will shift, resulting in a change in the height of the nozzle, thereby affecting the cutting effect. Through the linkage control of the adjusting member 105 and the sliding frame 102, the height of the nozzle can be kept basically unchanged while the angle of the torch is changed, effectively ensuring the stability of the cutting track and the cutting quality.

[0027] In addition, as the relative angle between the spray gun and the steel plate changes, the speed component of the nozzle relative to the steel plate will change, which will lead to inconsistent cutting speed and affect the cutting effect if not compensated. By driving the synchronous movement of the sliding frame 102, the speed change caused by the angle change can be offset, so that the cutting speed of the spray gun nozzle relative to the steel plate remains relatively constant, further improving the cutting quality and stability.

[0028] In this embodiment, a measuring member 103 is mounted on the sliding frame 102 for real-time measurement of the thickness of the steel plate before cutting. The measuring member 103 includes a measuring rod 103a, a measuring head 103b mounted at the end of the measuring rod 103a, and a second elastic expansion rod 103c arranged between the measuring rod 103a and the measuring head 103b. Through the elastic action of the second elastic expansion rod 103c, the measuring head 103b is always in contact with the upper and lower surfaces of the steel plate, thereby improving the stability and response sensitivity of the measurement.

[0029] The measuring head 103b is composed of a fixed block 103b-1 and a floating block 103b-3 slidingly sleeved on the measuring rod 103a, and a first measuring wheel 103b-2 and a second measuring wheel 103b-4 are arranged on the fixed block 103b-1 and the floating block 103b-3 respectively, both of which are in contact with the surface of the steel plate and roll in the moving direction of the steel plate, and the relative position change is recorded during the rolling process. A sensor 103b-8 is arranged between the fixed block 103b-1 and the floating block 103b-3 for real-time acquisition of the relative displacement information between the two. Since the change of the thickness of the steel plate will cause the change of the distance between the two measuring wheels, the sensor 103b-8 can accurately determine the thickness value of the current steel plate.

[0030] Through the measuring device, the system can obtain the thickness information of the steel plate in real time before or during cutting, and transmit the information to the control system or directly use it to drive the transmission part 107 to act, drive the adjusting member 105 to adjust the angle of the gas cutting spray gun 104, so that the nozzle is always at the best cutting angle matching different thicknesses of the steel plate, thereby realizing automatic and intelligent cutting control.

[0031] In this embodiment, in order to realize the angle adjustment between the gas cutting spray gun 104 and the steel plate, an adjusting member 105 is arranged on the sliding frame 102, and the adjusting member 105 is connected with a transmission part 107 through a set of connecting rod mechanisms. The transmission part 107 includes: a first rack 107a arranged on the sliding frame 102, a gear 107b rotatably arranged on the mounting seat 100, a second rack 107c slidingly arranged in the other sliding rail 101 of the mounting seat 100, and a first elastic expansion rod 107d arranged between the second rack 107c and the adjusting member 105.

[0032] The first rack 107a is engaged with the gear 107b, and the other side of the gear 107b is engaged with the second rack 107c. The second rack 107c is slidingly arranged in a separate sliding rail 101 of the mounting seat 100. The end of the second rack 107c is connected with the first connecting rod 105a through the first elastic telescopic rod 107d, the first connecting rod 105a is connected with the third connecting rod 105d through the second connecting rod 105c, and the mounting rod 105b forms a multi-stage connecting rod mechanism, and the mounting rod 105b is provided with a placing groove 105e for mounting the gas cutting lance 104.

[0033] When the measuring member 103 detects the change in the thickness of the steel plate and outputs an adjustment signal, the system control drives the driving part 106 to move, and the driving part 106 drives the sliding frame 102 to move on the sliding rail 101. The movement of the sliding frame 102 drives the first rack 107a to rotate by engaging the gear 107b, thereby driving the second rack 107c engaged with the other side of the gear 107b to slide linearly. Since the second rack 107c is limited in the sliding rail 101, it moves in translation, thereby driving the connecting rod to rotate.

[0034] In order to realize the transmission of the translational motion to the rotating connecting rod system, the first elastic telescopic rod 107d plays a key role in structural compensation: while the second rack 107c moves linearly, the elastic telescopic structure allows the length of the first connecting rod 105a to be dynamically compensated, so that the connecting rod can rotate smoothly, and the mounting rod 105b changes in angle, thereby realizing accurate adjustment of the angle of the lance.

[0035] Through the above structure, the angle of the gas cutting lance 104 can be automatically adjusted according to the change in the thickness of the steel plate, and at the same time, the compensation effect of the first elastic telescopic rod 107d ensures that the connecting rod mechanism can still operate flexibly when it is driven linearly, thereby improving the structural adaptability and operation stability of the whole device.

[0036] In this embodiment, the gas cutting lance 104 can realize the change in the angle between the lance and the surface of the steel plate through the adjusting member 105, so as to adapt to the cutting requirements of steel plates of different thicknesses. However, when the angle of the lance relative to the surface of the steel plate changes, the motion trajectory of the nozzle also changes, causing the motion direction of the nozzle nozzle in space to be inclined, and the projection speed component of the nozzle nozzle on the surface of the steel plate will increase accordingly.

[0037] The change of this speed component will cause the relative motion speed between the nozzle and the steel plate to increase, thereby affecting the energy coupling efficiency of the cutting flame and the steel plate, causing the cutting depth to be insufficient or the cutting section quality to decrease, thereby affecting the overall machining quality.

[0038] To this end, the linkage movement of the sliding frame 102 on the sliding rail 101 is introduced in this embodiment as a dynamic compensation means. When the measuring member 103 detects changes in the thickness of the steel plate and controls the adjusting member 105 to adjust the angle of the torch, the driving part 106 synchronously drives the sliding frame 102 to slide along the sliding rail 101 in a direction opposite to or corresponding to the change trend of the nozzle angle, thereby compensating for the change in the speed component of the nozzle on the surface of the steel plate.

[0039] Through the linkage control between the position of the sliding frame 102 and the angle of the torch, the actual speed trajectory of the nozzle in space is adjusted, keeping its cutting speed relative to the surface of the steel plate substantially constant, thereby ensuring the stability, continuity and consistency of the flame cutting process, effectively improving the cutting quality.

[0040] In this embodiment, a sensor 103b-8 is provided on the sliding rail 101 for detecting the current position of the sliding frame 102 on the sliding rail 101. The sensor 103b-8 is connected to the control system and can obtain real-time current displacement information of the sliding frame 102 and transmit it to the control system for data processing.

[0041] The control system dynamically controls the rotating roller provided on the mounting seat 100 according to the position information of the sliding frame 102, in combination with the working state and angle adjustment of the torch. Specifically, the control system can adjust the rotating speed of the rotating roller to keep the conveying speed of the steel plate synchronized with the cutting speed of the gas cutting torch 104, thereby realizing efficient and stable cutting operation.

[0042] Through the position feedback and speed adjustment linkage mechanism, problems such as cutting too deep, cutting not transparent or edge melting caused by mismatching of the feeding speed and the cutting speed can be effectively avoided. At the same time, this scheme can also adjust the feeding speed in real time during the process of adjusting the angle of the torch when the thickness of the steel plate changes, further improving the intelligent level of the whole system and the stability of the cutting quality.

[0043] Working principle: In actual application, the steel plate to be cut is conveyed to the cutting area by the rotating roller provided on the mounting seat 100. The sliding frame 102 is provided to slide along the sliding rail 101, and the gas cutting torch 104 is installed on the adjusting member 105 on the sliding frame 102 and can be adjusted in angle by the adjusting member 105. The measuring member 103 is installed on the sliding frame 102, and the first measuring wheel 103b-2 and the second measuring wheel 103b-4 contact the upper and lower surfaces of the steel plate respectively, cooperating with the floating structure, the compression spring 103b-5 and the second elastic expansion rod 103c, to accurately and stably measure the actual thickness of the steel plate.

[0044] When the measuring member 103 detects the change in the thickness of the steel plate, the measurement result is fed back to the control system through the sensor 103b-8. The control system controls the driving part 106 to act, so that the sliding frame 102 moves in the sliding rail 101; the first rack 107a on the sliding frame 102 drives the gear 107b engaged therewith to rotate, thereby driving the second rack 107c engaged with the other side of the gear 107b to move linearly in the second sliding rail 101 in the mounting base 100.

[0045] Since the movement of the second rack 107c is limited to linear sliding, the first elastic telescopic rod 107d is arranged for connecting the second rack 107c and the first connecting rod 105a. The telescopic structure can compensate the length of the connecting rod, so that the linear movement can be smoothly converted into the rotating action of the connecting rod mechanism, thereby driving the mounting rod 105b where the gas cutting torch 104 is located to rotate, so that the nozzle angle is automatically adjusted without changing the height of the gas cutting nozzle, thereby keeping the nozzle at the optimal inclination angle with respect to the surface of the steel plate and improving the cutting effect.

[0046] At the same time of the angle adjustment, the speed component of the nozzle on the surface of the steel plate will change. In order to avoid abnormal cutting speed, the driving part 106 synchronously adjusts the movement speed and direction of the sliding frame 102 on the sliding rail 101, so that the speed of the nozzle with respect to the surface of the steel plate is kept relatively constant through position control.

[0047] In addition, the position sensor 103b-8 is arranged on the sliding rail 101, which detects the position of the sliding frame 102 in the rail in real time. The position information is fed back to the control system, which comprehensively judges the current cutting state based on the position of the sliding frame 102, the angle of the torch and the thickness of the steel plate, and automatically adjusts the rotating speed of the rotating roller on the mounting base 100, so as to realize the synchronous matching of the conveying speed of the steel plate and the cutting speed of the nozzle, and further improve the stability and consistency of the cutting.

[0048] Embodiment 2 Please refer to Figures 1 to 7 The present application provides a technical solution: the structure of embodiment 2 is basically the same as that of embodiment 1, which includes the mounting base 100, the sliding rail 101, the sliding frame 102, the measuring member 103, the adjusting member 105, the gas cutting torch 104, the driving part 106, the transmission part 107, the clamping member 108 and the related sensor 103b-8 and the control system, and the technical principles and functions are consistent, which will not be repeated. The difference is that the speed regulating member 109 for regulating the rotating speed of the rotating roller in this embodiment adopts a mechanical variable speed mechanism based on commutation and transmission diameter adjustment.

[0049] Specifically, the speed regulating member 109 includes: A reversing element 109a is arranged at one end of the sliding frame 102, which is used to convert the linear movement of the sliding frame 102 along the sliding rail 101 into a movement perpendicular to the mounting base 100; An expanding element 109b is connected to the reversing element 109a, which is a wheel body with a variable diameter structure, and its diameter can be automatically expanded or reduced according to the position of the sliding frame 102; A transmission box 109c is connected to the expanding element 109b through a transmission belt 109d, and a variable gear 107b group is arranged inside the transmission box 109c, which is used to adjust the output speed of the rotating roller on the mounting base 100; One end of the transmission belt 109d is connected to the expanding element 109b, and the other end is connected to the input shaft in the transmission box 109c; In addition, the mounting base 100 is also provided with a tensioning element 110, which is used to adjust the tension state of the transmission belt 109d, so as to maintain the stability and reliability of the transmission system.

[0050] When the sliding frame 102 moves on the sliding rail 101, the reversing element 109a generates a vertical movement, which in turn drives the diameter of the expanding element 109b to change; the change of the diameter of the expanding element 109b will change the linear speed of the transmission belt 109d, so as to change the rotating speed of the input shaft of the transmission box 109c; the transmission box 109c outputs a rotating roller speed proportional to the input speed, so as to realize the synchronous adjustment of the feeding speed.

[0051] The reversing element 109a includes: a chute 109a-1 arranged at one end of the sliding frame 102; a through slot 109a-2 arranged on the mounting base 100 and corresponding to the chute 109a-1; a rectangular rod 109a-3 slidingly arranged in the through slot 109a-2; a slide rod 109a-4 connected to one side of the rectangular rod 109a-3, and the other end of the slide rod 109a-4 is slidingly arranged in the chute 109a-1. When the sliding frame 102 moves along the sliding rail 101, the chute 109a-1 moves in parallel, and since one end of the slide rod 109a-4 is guided by the chute 109a-1 and the other end is fixed to the rectangular rod 109a-3, the horizontal movement of the chute 109a-1 will cause the rectangular rod 109a-3 to move vertically up and down in the through slot 109a-2, realizing the reversing function, and converting the linear movement of the sliding frame 102 into vertical input displacement.

[0052] The expansion piece 109b is used for controlling the radius change of the expansion plate 109b-7 according to the vertical movement of the rectangular rod 109a-3, which comprises a rectangular block 109b-1 arranged at the lower end of the rectangular rod 109a-3, a sliding hole 109b-2 opened on the rectangular block 109b-1, a sliding rod 109b-3 slidingly arranged in the sliding hole 109b-2, a support block 109b-4 arranged at the end of the sliding rod 109b-3, a telescopic spring 109b-5 arranged between the support block 109b-4 and the rectangular block 109b-1 and used for providing an outward pushing force, a rotating connection between the support block 109b-4 and the rectangular block 109b-1 through an X-shaped connecting rod 109b-6, and a rotating connection between the other end of the X-shaped connecting rod 109b-6 and the expansion plate 109b-7. The expansion plate 109b-7 is uniformly distributed to form a variable diameter structure and is placed on the ground to form the working surface of the expansion piece 109b. Through the rising or falling of the rectangular rod 109a-3, the X-shaped connecting rod 109b-6 structure is opened or closed, so that the diameter of the circle surrounded by the expansion plate 109b-7 is enlarged or reduced, and then the linear velocity of the transmission belt 109d connected thereto is changed to realize the adjustment of different transmission ratios. In order to prevent the transmission belt 109d from being relaxed in the movement, the tensioning piece 110 is arranged in the embodiment to keep the transmission belt 109d in a tensioned state at all times, which comprises a sliding groove 110a arranged on the mounting seat 100, a sliding protrusion 110b slidingly arranged in the sliding groove 110a, an elastic spring 110c arranged between the sliding protrusion 110b and the sliding groove 110a, and the inner end surface of the sliding protrusion 110b abutting against the inner side of the transmission belt 109d. Through the outward elastic force of the spring, the sliding protrusion 110b continuously applies tension to the transmission belt 109d to realize dynamic tensioning and ensure the transmission stability and transmission efficiency.

[0053] Those skilled in the art will understand that the above discussion of any embodiment is only exemplary and is not intended to imply that the scope (including claims) of the present application is limited to these examples; under the idea of the present application, the above embodiments or technical features in different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as above, which are not provided in details for the sake of brevity.

[0054] The present application is intended to cover all such alternatives, modifications, and variations as fall within the broad scope of the appended claims. Accordingly, any one of the above-cited examples, or any other example, can be combined with any other example, or any other technology disclosed herein, without departing from the scope of the present application.

Claims

1. A flame cutting device with an adjustable cutting angle, characterized in that, include: Mounting base (100), sliding rails (101) respectively set on both sides of mounting base (100), sliding frame (102) slidably set on sliding rail (101), measuring element (103) installed on sliding frame (102) for measuring the thickness information of steel plate before cutting; gas cutting gun (104) set on sliding frame (102), the sliding frame (102) and the gas cutting gun (104) are connected by adjusting element (105) for adjusting the tilt angle of gas cutting gun (104) relative to the surface of steel plate; driving part (106) set at one end of sliding rail (101) for driving sliding frame (102) to slide back and forth along sliding rail (101); transmission part (107) set between sliding frame and adjusting element (105) for driving adjusting element (105) to change the angle of the gun.

2. The flame cutting device for adjusting the cutting angle according to claim 1, characterized in that, The transmission unit (107) includes a first rack (107a) disposed on the sliding frame (102), a gear (107b) rotatably disposed on the mounting base (100), a second rack (107c) slidably disposed on the mounting base (100), and a first elastic telescopic rod (107d) disposed between the adjusting member (105) and the mounting frame. The first rack (107a) meshes with the gear (107b), the gear (107b) meshes with the second rack (107c), and the second rack (107c) is connected to the adjusting member (105).

3. The flame cutting device for adjusting the cutting angle according to claim 1, characterized in that, The measuring component (103) includes a measuring rod (103a) mounted on the sliding frame (102), a measuring head (103b) disposed at the end of the measuring rod (103a), and a second elastic telescopic rod (103c) disposed between the measuring rod (103a) and the measuring head (103b). The measuring head (103b) includes a fixed block (103b-1) disposed at the end of the measuring rod (103a), a first measuring wheel (103b-2) disposed on the fixed block (103b-1), a floating block (103b-3) slidably sleeved on the measuring rod (103a), and a second measuring wheel (103b-4) disposed on the floating block (103b-3); a compression spring (103b-5) is disposed between the fixed block (103b-1) and the floating block (103b-3); the first measuring wheel (103b-2) and the second measuring wheel (103b-4) respectively contact the surface of the steel plate and roll to obtain measurement information; The fixed block (103b-1) and the floating block (103b-3) are respectively provided with a first mounting plate (103b-6) and a second mounting plate (103b-7). A sensor (103b-8) is provided between the first mounting plate (103b-6) and the second mounting plate (103b-7) to sense the relative position change between the fixed block (103b-1) and the floating block (103b-3) and determine the thickness of the steel plate.

4. The flame cutting device for adjusting the cutting angle according to claim 1, characterized in that, The adjusting component (105) includes a first connecting rod (105a), one end of which is connected to the first elastic telescopic rod (107d) and the other end of which is connected to the second rack (107c); and a mounting rod (105b), which is rotatably connected to the first connecting rod (105a) through the second connecting rod (105c) and the third connecting rod (105d); the mounting rod (105b) is provided with a placement groove (105e), and the gas cutting gun (104) is placed in the placement groove (105e).

5. The flame cutting device for adjusting the cutting angle according to claim 1, characterized in that, The mounting base (100) is also provided with a clamping member (108), which is used to clamp and fix the steel plate to be cut in order to prevent the steel plate from moving during the cutting process.

6. The flame cutting device for adjusting the cutting angle according to claim 1, characterized in that, The mounting base (100) is provided with a speed regulating component (109) for adjusting the rotation speed of the rotating roller on the mounting base (100) according to the position information of the sliding frame (102).

7. The flame cutting device for adjusting the cutting angle according to claim 6, characterized in that, A sensor (103b-8) is provided on the sliding rail (101), and the sensor (103b-8) is used to detect the current position of the sliding frame (102) on the sliding rail (101).

8. The flame cutting device for adjusting the cutting angle according to claim 6, wherein the speed regulating component (109) comprises: a reversing component (109a) disposed at one end of the sliding component for generating a movement perpendicular to the mounting base (100); an expanding component (109b) connected to the reversing component (109a) for expanding or reducing the diameter of the expanding component (109b); and a transmission box (109c) connected to the expanding component (109b), wherein the transmission box (109c) is used to control the rotational speed of the rotating roller; The enlarged component (109b) is connected to the transmission box (109c) via a transmission belt (109d).

9. The flame cutting device for adjusting the cutting angle according to claim 6, wherein the mounting base (100) is further provided with a tensioning member (110) for adjusting the tension of the transmission belt (109d).

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