A stainless steel thick plate laser cutting and welding integrated machine

Abstract

The present invention discloses a stainless steel thick plate laser cutting and welding integrated machine, which relates to the technical field of stainless steel thick plate processing, including a control box, and also including a sub-box fixedly installed on the side of the control box; a control unit is installed on the upper part and inside of the control box, and is used to control the operation of various electrical components on the integrated machine. The advantages are: the present invention adopts a two-stage zoom operation to change the focal position at the same time, which can be within the displacement range of the second lens mounting frame, so that the focal position of the convex lens on the second lens mounting frame changes more, so that the stainless steel thick plate with a thickness greater than the displacement range of the second lens mounting frame can be cut and welded, and the angle of the nozzle and the pressure of the ejected gas can be automatically adjusted during the process of adjusting the focus, ensuring that the intersection of the focus and the ejected gas of the nozzle is located at the part to be cut and welded, thereby improving the protection efficiency of the inert gas.

Description

Technical Field

[0001] The invention relates to the technical field of stainless steel thick plate processing, and in particular to a stainless steel thick plate laser cutting and welding integrated machine. Background Art

[0002] Stainless steel is a common metal alloy with the characteristics of corrosion resistance, high temperature resistance and beautiful appearance. It is widely used in many fields. When used in various fields, due to different usage scenarios, the requirements for the shape of stainless steel are different. Stainless steel of various shapes are cut and welded from stainless steel thick plates.

[0003] With the development of science and technology, the welding and cutting of stainless steel have been integrated. Both operations can be completed on the same cutting and welding machine, which improves the processing efficiency of stainless steel. Most of this equipment uses laser cutting and welding. For example, announcement number CN111590213B discloses an automatic focusing high-efficiency laser cutting device, which includes a shell, a laser transmission device is fixedly connected to the top of the shell, a telescopic hose is fixedly connected to the bottom of the laser transmission device, a laser connection device is fixedly connected to the bottom of the telescopic hose, a cutting head is fixedly connected to the bottom of the laser connection device, and an adjustment mechanism is fixedly provided on the outside of the laser connection device.

[0004] The automatic focusing high-efficiency laser cutting device moves by detecting the movement of the ball, and then drives the trigger block to move upward, so that the trigger block triggers the touch switch, and then uses the upward movement distance to trigger each touch switch, so as to realize the use of multiple touch switches to control the power of the cutting head, thereby adjusting the cutting degree. The detection ball can be used to detect the thickness of the workpiece and the local height of the workpiece, so that the cutting can be more regular.

[0005] However, when the automatic focusing high-efficiency laser cutting device is used in practice, the displacement of the optical lens is controlled when it is switched on and off, thereby changing the focus of the optical lens. Since the displacement of the detection ball is fixed, the optical lens can only move within the range of the detection ball displacement. Therefore, the change in the focus of the optical lens is also consistent with the displacement of the detection ball. There are certain limitations. For stainless steel thick plates whose thickness exceeds the displacement of the detection ball, the cutting operation cannot be performed. At the same time, due to the change in the focus of the optical lens, the cutting part will also change, while the angle and pressure of the inert gas in the automatic focusing high-efficiency laser cutting device do not change, and the protection effect on the welding and cutting parts is poor.

[0006] Therefore, a new type of stainless steel thick plate laser cutting and welding integrated machine can be used to solve the shortcomings of the prior art. Summary of the invention

[0007] The purpose of the present invention is to solve the problems of limited zoom range and poor inert gas protection effect in the prior art, and to propose a stainless steel thick plate laser cutting and welding integrated machine.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A stainless steel thick plate laser cutting and welding integrated machine, comprising a control box and a sub-box fixedly mounted on the side of the control box;

[0010] A control unit, installed on the top and inside of the control chassis, is used to control the operation of various electrical components on the all-in-one machine. The control unit includes a control panel fixedly installed on the top of the control chassis, and a control system matched with the control panel is fixedly installed in the control chassis;

[0011] A placement part is installed on the upper part and inside of the auxiliary box, and is used to place the stainless steel thick plate. The placement part includes a lifting platform fixedly installed on the top of the auxiliary box, a longitudinal displacement platform is fixedly installed on the top of the lifting platform, a transverse displacement platform is slidably installed on the longitudinal displacement platform, and a placement platform is slidably installed on the transverse displacement platform;

[0012] The welding and cutting part is installed on the top and inside of the control box and is used in conjunction with a placement table for cutting and welding thick stainless steel plates. The welding and cutting part includes an inert gas cabin fixedly installed on the top of the control box. A gas supply source connected to the inert gas cabin is fixedly installed in the control box. A cutting and welding head is fixedly installed at one end of the inert gas cabin. The cutting and welding head consists of two parts: a laser emitting component and an inert gas protection component.

[0013] Preferably, the laser emission assembly comprises a gas guide head fixedly mounted on one end of the inert gas cabin, an output coupling cabin fixedly mounted on the gas guide head, a lens mounting frame 1 and a lens mounting frame 2 slidably mounted in the output coupling cabin; a convex lens is fixedly mounted on each of the lens mounting frame 1 and the lens mounting frame 2, and a focus adjustment mechanism matched with the lens mounting frame 2 is mounted on the output coupling cabin;

[0014] A laser medium cabin is fixedly installed on the top of the output coupling cabin, an excitation source is fixedly installed on the top of the laser medium cabin, an output head is fixedly installed on the bottom of the output coupling cabin, and a beam adjustment mechanism is installed between the first lens mounting frame and the second lens mounting frame.

[0015] Preferably, the focus adjustment mechanism includes a fixing plate fixedly mounted on the side of the output coupling cabin, a screw rod 1 is rotatably mounted on the fixing plate through a rotating cylinder, a nut 1 is threadedly rotatably mounted on the screw rod 1, the nut 1 is fixedly connected to a lens mounting frame 2, a motor is fixedly mounted on the fixing plate, and the motor driving end is connected to the screw rod 1 through a bevel gear set.

[0016] Preferably, the beam adjustment mechanism includes a screw rod 2 rotatably mounted on a lens mounting frame 2, a nut 2 is threadedly rotatably mounted on the screw rod 2, the nut 2 is fixedly connected to the lens mounting frame 1, and a linkage structure is installed between the screw rod 1 and the screw rod 2.

[0017] Preferably, the linkage structure includes a gear one fixedly mounted on a screw rod one, a rotating sleeve slidably mounted on the screw rod two through a slide groove, the rotating sleeve is rotationally connected to a fixed plate, and a gear two meshing with the gear one is fixedly mounted on the rotating sleeve.

[0018] Preferably, the inert gas protection assembly comprises a supercharger, a transformer and a temperature booster fixedly mounted on the side of the output coupling cabin, and the supercharger and the gas guide head, the supercharger and the temperature booster, and the temperature booster and the transformer are all connected through a gas guide pipe;

[0019] A fixing ring is fixedly installed on the output head, and a plurality of nozzles are rotatably installed on the fixing ring. An annular gas cabin is fixedly installed on the output head. The annular gas cabin and the plurality of nozzles are connected through an air guide hose. The annular gas cabin and the temperature riser are connected through an air pipe. An angle adjustment mechanism matching with the plurality of nozzles is installed on the annular gas cabin.

[0020] Preferably, the angle adjustment mechanism includes a sliding ring slidably mounted on the outside of the annular gas cabin, a plurality of racks are fixedly mounted on the sliding ring, a rotating shaft is fixedly mounted on each of the nozzles, each of the rotating shafts is rotatably connected to the fixed ring, a gear three meshing with the corresponding rack is fixedly mounted on each of the rotating shafts, and a driving component cooperating with the sliding ring is installed on the output coupling cabin.

[0021] Preferably, the driving component includes a fixed block fixedly mounted on the sliding ring, the fixed block is provided with a through hole, a nut three is fixedly mounted in the through hole, a screw rod three is threadedly rotatably mounted on the nut three, a rotating rod is fixedly mounted on the screw rod three, the rotating rod is rotationally connected to the output coupling cabin, and a transmission component is installed between the screw rod two and the rotating rod.

[0022] Preferably, the transmission component comprises a sleeve fixedly mounted on the rotating sleeve, a track roller is fixedly mounted on the sleeve and the rotating rod, and a track is commonly mounted between the two track rollers.

[0023] Preferably, a storage slot cooperating with the first lens mounting frame and the second lens mounting frame is provided on the output coupling cabin, and a telescopic sealing plate cooperating with the first lens mounting frame and the second lens mounting frame is fixedly installed outside the storage slot.

[0024] Compared with the prior art, the present invention has the following advantages:

[0025] 1: During the welding and cutting process, the stainless steel thick plate laser cutting and welding machine can change the distance between the lens mounting frame 1 and the lens mounting frame 2 to change the concentration of the laser beam between the lens mounting frame 1 and the lens mounting frame 2 in the output coupling cabin, thereby changing the focal position of the convex lens on the lens mounting frame 2, so as to perform the first-stage zoom operation. At the same time, the focal position of the convex lens on the lens mounting frame 2 can be changed by changing the position of the convex lens on the lens mounting frame 2, so as to perform the second-stage zoom operation. The two-stage zoom operation is performed simultaneously, and the focal position of the convex lens on the lens mounting frame 2 can be changed more within the displacement range of the lens mounting frame 2, so that the stainless steel thick plate with a thickness greater than the displacement range of the lens mounting frame 2 can be cut and welded.

[0026] 2: During the welding and cutting process, this stainless steel thick plate laser cutting and welding machine provides jet protection for different cutting and welding parts by setting a rotatable nozzle. At the same time, the pressure of the gas ejected from the nozzle can be changed according to the position of welding and cutting through a transformer to ensure that the gas ejected from the nozzle is in full contact with the welding and cutting parts for protection, thereby improving the protection efficiency of the inert gas. The use of multiple nozzles can offset the impact force of the gas ejected from the nozzles, thereby reducing the impact of the gas ejected from the nozzles on the welding or cutting parts, thereby ensuring the flatness of the welding or cutting parts. In addition, a heater is used to heat the inert gas to preheat the cutting and welding parts, reduce the initial thermal stress of the cutting and welding parts, and reduce the probability of deformation of the welding and cutting parts.

[0027] 3: During the welding and cutting process, the stainless steel thick plate laser cutting and welding machine drives the rotating rod to rotate through the crawler track, and then drives the screw rod three to rotate. The rotation of the screw rod three drives the nut three and the fixed block to move. The movement of the fixed block drives the sliding ring to move, thereby driving the rack to rotate, and the rack drives the gear to rotate, thereby driving the nozzle to rotate, so as to change the angle of the nozzle. In this way, the angle of the nozzle can be adjusted while adjusting the focus. The mechanical structure is linked, and the stability is higher, ensuring that the adjustment of the nozzle and the focus are carried out synchronously, thereby ensuring that the intersection of the focus and the gas ejected from the nozzle is located at the part to be cut and welded.

[0028] In summary, the present invention adopts a two-stage zoom operation to change the focal position simultaneously, and can make the focal position of the convex lens on the lens mounting frame 2 change more within the displacement range of the lens mounting frame 2, so that the stainless steel thick plate with a thickness greater than the displacement range of the lens mounting frame 2 can be cut and welded. At the same time, the angle of the nozzle and the pressure of the ejected gas can be automatically adjusted during the process of adjusting the focus to ensure that the intersection of the focus and the gas ejected from the nozzle is located at the part to be cut and welded, thereby improving the protection efficiency of the inert gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings, wherein:

[0030] Figure 1 This is a schematic diagram of the structure of a stainless steel thick plate laser cutting and welding integrated machine proposed by the present invention;

[0031] Figure 2 for Figure 1 Detailed schematic diagram of the structure after being rotated to a certain angle;

[0032] Figure 3 for Figure 1 A detailed schematic diagram of the enlarged structure of the middle auxiliary box, the lifting platform, the longitudinal displacement platform, the transverse displacement platform and the placement platform;

[0033] Figure 4 for Figure 1 A detailed schematic diagram of the inert gas chamber and the enlarged structure of the cutting and welding head;

[0034] Figure 5 for Figure 4 A schematic detailed diagram of the enlarged structure of the middle cutting welding head;

[0035] Figure 6 for Figure 5 Detailed schematic diagram of the structure after being rotated to a certain angle;

[0036] Figure 7 for Figure 6 A schematic detailed view of the plan structure along one of the angles;

[0037] Figure 8 for Figure 6 Detailed schematic diagram of the structure after being rotated to a certain angle;

[0038] Fig. 9 for Figure 6 A schematic diagram of the structure of the laser emission assembly;

[0039] Fig.10 for Fig. 9 Detailed schematic diagram of the structure after removing the excitation source, laser medium cabin, output coupling cabin, output head and telescopic sealing plate;

[0040] Fig.11 for Fig.10 Detailed schematic diagram of the structure after being rotated to a certain angle;

[0041] Fig.12 for Fig.10 A detailed schematic diagram of the enlarged structure after removing the lens mounting frame 1, the lens mounting frame 2, the convex lens, the fixing plate and the sleeve;

[0042] Fig.13 for Figure 6 Detailed schematic diagram of the structure of the inert gas protection component;

[0043] Fig.14 for Fig.13 Detailed schematic diagram of the structure after being rotated to a certain angle;

[0044] Fig.15 for Fig.14 A detailed schematic diagram of the structure after removing the air guide head, supercharger, air guide pipe, duct and heater;

[0045] Fig.16 for Fig.15 An enlarged structural schematic diagram of the middle jet head, annular gas chamber, screw rod 3, sliding ring and gas guide hose.

[0046] In the figure: 1 control box, 2 control panel, 3 inert gas cabin, 4 cutting welding head, 5 auxiliary box, 6 lifting platform, 7 longitudinal displacement platform, 8 lateral displacement platform, 9 placement platform, 10 gas guide head, 11 excitation source, 12 laser medium cabin, 13 output coupling cabin, 14 output head, 15 supercharger, 16 gas guide tube, 17 transformer, 18 jet head, 19 annular gas cabin, 20 rotating rod, 21 fixed plate, 22 telescopic sealing plate, 23 motor, 24 lens mounting frame one, 25 lens mounting frame two, 26 convex lens, 27 screw rod one, 28 screw rod two, 29 sleeve, 30 nut one, 31 nut two, 32 gear one, 33 gear two, 34 rotating sleeve, 35 bevel gear set, 36 sliding ring, 37 gas guide hose, 38 warmer, 39 crawler, 40 screw rod three, 41 fixed ring, 42 fixed block, 43 gear three, 44 rack, 45 nut three. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] Example 1: Reference Figure 1-Figure 3 , a stainless steel thick plate laser cutting and welding integrated machine, comprising a control box 1, and also comprising a sub-box 5 fixedly mounted on the side of the control box 1;

[0049] The control unit is installed on the upper part and inside of the control chassis 1, and is used to control the operation of various electrical components on the all-in-one machine. The control unit includes a control panel 2 fixedly installed on the top of the control chassis 1. A control system that matches the control panel 2 is fixedly installed in the control chassis 1. In addition to the electronic components required by the control system, the control system also includes a temperature sensor and a humidity sensor, etc., which are used to monitor the temperature and humidity in the control chassis 1. A cooling fan is installed on the side of the control chassis 1, and a plurality of universal wheels and a plurality of liftable gaskets are installed at the bottom of the control chassis 1 and the bottom of the sub-box 5. The universal wheels are used for movement, and the gaskets are used for locking.

[0050] Embodiment 2: This embodiment is different from the embodiment 1 in that: Figure 1-Figure 3 The placement part is installed on the upper part and inside of the auxiliary box 5, and is used for placing the stainless steel thick plate. The placement part includes a lifting platform 6 fixedly installed on the top of the auxiliary box 5, and a longitudinal displacement platform 7 is fixedly installed on the top of the lifting platform 6. A transverse displacement platform 8 is slidably installed on the longitudinal displacement platform 7, and a placement platform 9 is slidably installed on the transverse displacement platform 8.

[0051] An electric control system cooperating with the lifting platform 6, the longitudinal displacement platform 7 and the transverse displacement platform 8 is installed in the auxiliary box 5. The placement table 9 can be freely moved on the transverse displacement platform 8 through the electric control system, and the transverse displacement platform 8 can be freely moved on the longitudinal displacement platform 7 through the electric control system. The longitudinal displacement platform 7 can control the lifting platform 6 through the electric control system and can be freely lifted and lowered under the action of the lifting platform 6. It is used for welding and cutting to drive the movement and lifting of the stainless steel plate. For the stainless steel plate whose thickness exceeds the focus change range, the height of the stainless steel plate can be changed by the lifting platform 6, and then the cutting and welding operations can be performed.

[0052] The lifting platform 6, the longitudinal displacement platform 7 and the transverse displacement platform 8 are all existing moving and lifting technologies, which will not be elaborated in detail here. Their specific operation steps and specific structures are described and shown.

[0053] Embodiment 3: This embodiment is different from the technical solution of Embodiment 2 in that: Figure 1-Figure 2 , Figure 4-Figure 16 The welding and cutting part is installed on the top and inside of the control box 1 and is used in conjunction with the placement table 9 for cutting and welding thick stainless steel plates. The welding and cutting part includes an inert gas cabin 3 fixedly installed on the top of the control box 1, and a gas supply source connected to the inert gas cabin 3 is fixedly installed in the control box 1.

[0054] The function of the inert gas cabin 3 is to provide a buffer place for the gas source, to reduce the pressure of the inert gas ejected from the gas source, and to keep the pressure of the inert gas in the inert gas cabin 3 stable. It also has the function of eliminating moisture in the inert gas, thereby improving the protective performance of the inert gas.

[0055] A cutting and welding head 4 is fixedly installed at one end of the inert gas cabin 3. The cutting and welding head 4 consists of two parts: a laser emitting component and an inert gas protection component.

[0056] The laser emission assembly includes a gas guide head 10 fixedly mounted on one end of the inert gas chamber 3, an output coupling chamber 13 fixedly mounted on the gas guide head 10, a lens mounting frame 1 24 and a lens mounting frame 2 25 slidably mounted in the output coupling chamber 13; a convex lens 26 is fixedly mounted on the lens mounting frame 1 24 and the lens mounting frame 2 25, and a focus adjustment mechanism matched with the lens mounting frame 2 25 is mounted on the output coupling chamber 13;

[0057] The convex lenses 26 on the lens mounting frame 1 24 and the lens mounting frame 2 25 can be freely removed. Replacing different convex lenses 26 can achieve switching between welding and cutting. The specific switching method and the type of lens to be switched are existing technologies and are mentioned here but not elaborated in detail.

[0058] The output coupling chamber 13 also includes an output coupling device for controlling and adjusting the power and characteristics of the laser output from the laser transmitter. The output coupling device is usually a mirror in the optical cavity, which can adjust the reflectivity of the mirror surface so as to output a part of the laser to external applications or experiments. It is an existing technical feature and will not be described in detail here, nor is it specifically shown in the figure.

[0059] The focus adjustment mechanism includes a fixed plate 21 fixedly mounted on the side of the output coupling cabin 13, a screw rod 27 is rotatably mounted on the fixed plate 21 through a rotating cylinder, a nut 30 is threadedly rotatably mounted on the screw rod 27, the nut 30 is fixedly connected to the lens mounting frame 25, a motor 23 is fixedly mounted on the fixed plate 21, and the driving end of the motor 23 is connected to the screw rod 27 through a bevel gear set 35.

[0060] The rotation of the driving end of the motor 23 will drive the screw rod 27 to rotate through the bevel gear set 35. The rotation of the screw rod 27 drives the nut 30 to move, thereby driving the lens mounting frame 25 to move. The movement of the lens mounting frame 25 drives the convex lens 26 on the lens mounting frame 25 to move, thereby changing the focal position of the convex lens 26 on the lens mounting frame 25.

[0061] The output coupling cabin 13 is provided with a storage slot matched with the lens mounting frame 1 24 and the lens mounting frame 2 25 , and a telescopic sealing plate 22 matched with the lens mounting frame 1 24 and the lens mounting frame 2 25 is fixedly installed outside the storage slot.

[0062] The function of the storage slot is to facilitate the installation and disassembly of the lens mounting frame 1 24 and the lens mounting frame 2 25. The function of the telescopic sealing plate 22 is to seal the open storage slot to prevent external light sources from entering the output coupling cabin 13 and affecting the laser beam. The telescopic sealing plate 22 adopts a telescopic design and can be retracted and moved with the movement of the lens mounting frame 1 24 and the lens mounting frame 2 25.

[0063] A laser medium cabin 12 is fixedly installed on the top of the output coupling cabin 13, an excitation source 11 is fixedly installed on the top of the laser medium cabin 12, an output head 14 is fixedly installed on the bottom of the output coupling cabin 13, and a beam adjustment mechanism is installed between a lens mounting frame 1 24 and a lens mounting frame 2 25.

[0064] The laser medium cabin 12 contains a working medium, also called a laser medium, which is a key part of generating laser in a laser transmitter. It can be in the form of solid, liquid or gas, and has a specific energy level structure. When excited by the energy of an excitation source, it will generate laser radiation.

[0065] The excitation source 11 is one of the core components of the laser transmitter, and is used to provide energy to excite the working medium to generate laser. Common excitation sources 11 include electronic excitation, photoelectric excitation, chemical reaction or other types of energy input devices.

[0066] The beam adjustment mechanism includes a screw rod 28 rotatably mounted on the lens mounting frame 25, a nut 31 is rotatably mounted on the screw rod 28, the nut 31 is fixedly connected to the lens mounting frame 1 24, and a linkage structure is installed between the screw rod 1 27 and the screw rod 28;

[0067] The linkage structure includes a gear 1 32 fixedly mounted on the screw 1 27 , a rotating sleeve 34 is slidably mounted on the screw 2 28 through a slide groove, the rotating sleeve 34 is rotationally connected to the fixed plate 21 , and a gear 2 33 meshing with the gear 1 32 is fixedly mounted on the rotating sleeve 34 .

[0068] The rotation of screw rod 1 27 drives gear 1 32 to rotate, and the rotation of gear 1 32 drives gear 2 33 to rotate, thereby driving the rotating sleeve 34 to rotate. Since the rotating sleeve 34 and screw rod 28 are in sliding connection, the rotation of the rotating sleeve 34 drives screw rod 28 to rotate, so that the nut 2 31 moves on the screw rod 28, so as to change the distance between the lens mounting frame 1 24 and the lens mounting frame 25 (the distance between the focal position of the convex lens 26 on the lens mounting frame 1 24 and the center point of the convex lens 26 on the lens mounting frame 1 24 is greater than the relative displacement between the lens mounting frame 1 24 and the lens mounting frame 25, so as to ensure that the laser beam gathered by the convex lens 26 on the lens mounting frame 1 24 can pass through the convex lens 26 on the lens mounting frame 25. If the distance between the focal position of the convex lens 26 on the lens mounting frame 1 24 and the center point of the convex lens 26 on the lens mounting frame 1 24 is less than the distance between the lens mounting frame 1 24 and the lens The relative displacement between the two mounting frames 25 is such that the laser beam gathered by the convex lens 26 on the lens mounting frame 1 24 will be focused before reaching the convex lens 26 on the lens mounting frame 25, so that the intensity of the laser beam on the convex lens 26 on the lens mounting frame 25 is reduced, resulting in a reduction in laser energy). As the distance between the two convex lenses 26 increases, the laser beam on the convex lens 26 on the lens mounting frame 25 is more intensely focused, so that the focal position of the convex lens 26 on the lens mounting frame 25 is closer to the center point of the convex lens 26 on the lens mounting frame 25 (the convex lens 26 on the lens mounting frame 1 24 will convert the laser beam in the output coupling cabin 13 from a horizontal beam into a focused beam, so that the focus of the convex lens 26 on the lens mounting frame 25 will be earlier than the focus under the horizontal laser beam, that is, the distance between the focal position and the center point under the focused beam is smaller than the distance between the focal position and the center point under the horizontal beam).

[0069] The inert gas protection assembly includes a supercharger 15, a transformer 17 and a temperature booster 38 fixedly mounted on the side of the output coupling cabin 13; the supercharger 15 and the gas guide head 10, the supercharger 15 and the temperature booster 38, and the temperature booster 38 and the transformer 17 are all connected via an air guide pipe 16; a fixing ring 41 is fixedly mounted on the output head 14, and a plurality of nozzles 18 are rotatably mounted on the fixing ring 41.

[0070] The pressure of the gas ejected from the nozzle 18 is changed by the transformer 17 according to the welding and cutting position, so as to ensure that the gas ejected from the nozzle 18 is in full contact with the welding and cutting part for protection, thereby improving the protection efficiency of the inert gas.

[0071] The use of multiple nozzles 18 can offset the impact force of the gas ejected from the nozzles 18, thereby reducing the impact of the gas ejected from the nozzles 18 on the welding or cutting part, ensuring the flatness of the welding or cutting part. In addition, a heater 38 is used to heat the inert gas to preheat the cutting and welding part, reduce the initial thermal stress of the cutting and welding part, and reduce the probability of deformation of the welding and cutting part.

[0072] An annular gas cabin 19 is fixedly installed on the output head 14. The annular gas cabin 19 is connected to multiple nozzles 18 through a gas guide hose 37. The annular gas cabin 19 is connected to the heater 38 through an air pipe. The annular gas cabin 19 is installed with an angle adjustment mechanism that matches the multiple nozzles 18.

[0073] The angle adjustment mechanism includes a sliding ring 36 slidably mounted on the outside of the annular gas cabin 19, and a plurality of racks 44 are fixedly mounted on the sliding ring 36. A rotating shaft is fixedly mounted on each nozzle 18, and each rotating shaft is rotationally connected to the fixed ring 41. A gear 3 43 meshing with the corresponding rack 44 is fixedly mounted on each rotating shaft, and a driving component matching the sliding ring 36 is installed on the output coupling cabin 13.

[0074] The driving component includes a fixed block 42 fixedly mounted on the sliding ring 36, a through hole is opened on the fixed block 42, a nut 3 45 is fixedly mounted in the through hole, a screw rod 3 40 is threadedly rotatably mounted on the nut 3 45, a rotating rod 20 is fixedly mounted on the screw rod 3 40, the rotating rod 20 is rotationally connected to the output coupling cabin 13, and a transmission component is installed between the screw rod 28 and the rotating rod 20.

[0075] The rotation of the rotating rod 20 drives the screw rod 3 40 to rotate, and the rotation of the screw rod 3 40 drives the nut 3 45 to move, thereby driving the sliding ring 36 to move through the fixed block 42, and the movement of the sliding ring 36 drives the rack 44 to move, thereby driving the rotating shaft to rotate through the gear 3 43, and the rotating shaft drives the nozzle 18 to rotate, so as to change the angle of the nozzle 18.

[0076] The transmission component includes a sleeve 29 fixedly mounted on the rotating sleeve 34. A track roller is fixedly mounted on the sleeve 29 and the rotating rod 20. A track 39 is sleeved between the two track rollers.

[0077] The rotating sleeve 34 rotates to drive the sleeve 29 to rotate, and the rotating rod 20 is driven to rotate through the track roller and the track 39, so that the focus can be adjusted while the nozzle 18 is supervised and adjusted to ensure that the gas ejected by the nozzle 18 is exactly in the cutting or welding position with the focus position, thereby improving accuracy and high stability.

[0078] like Figure 15-16It can be seen that the length of screw rod 27 is greater than the displacement of sliding ring 36, so the pitch of screw rod 3 40 is smaller than the pitch of screw rod 27, so that the fixed block 42 can be decelerated. At the same time, the size of the track roller on the rotating rod 20 is larger than the size of the track roller on the rotating sleeve 34, thereby reducing the rotation speed of the rotating rod 20, thereby ensuring that the angle of the nozzle 18 is always facing inward.

[0079] The specific operation steps of this device are as follows:

[0080] First, place the stainless steel thick plate on the placement table 9, and then fix the stainless steel thick plate. The stainless steel thick plate can be clamped on the placement table 9, and then the height of the stainless steel thick plate is adjusted by the lifting platform 6, and then the position of the placement table 9 is adjusted by the longitudinal displacement table 7 and the transverse displacement table 8. During the welding or cutting process, as the cutting or welding proceeds, the transverse displacement table 8 will drive the placement table 9 to move, thereby realizing movement while welding or movement while cutting.

[0081] Then, according to the post-setting control system and the program of the electric control system of the stainless steel thick plate, welding or cutting is performed. The mode switching between welding and cutting can be achieved by changing the type of the output head 14 and the convex lens 26.

[0082] The device is now in cutting mode, and the specific operating steps are as follows: the inert gas is introduced into the gas guide head 10 through the inert gas cabin 3, and then the inert gas is introduced into the supercharger 15 through the gas guide pipe 16. The supercharger 15 introduces the inert gas into the temperature increaser 38 through the gas guide pipe 16 for heating, and then the inert gas is introduced into the nozzle 18 through the gas hose 37, and then the inert gas is sprayed onto the cutting part through the nozzle 18. The supercharger 15 will automatically adjust the pressure of the inert gas according to the timing of cutting.

[0083] As cutting progresses, the cutting depth increases. In order to achieve the best cutting efficiency, the focus of the laser also needs to change with the depth;

[0084] At this time, the motor 23 is operated, and the rotation of the driving end of the motor 23 will drive the screw rod 27 to rotate through the bevel gear set 35. The rotation of the screw rod 27 drives the nut 30 to move, thereby driving the lens mounting frame 25 to move. The movement of the lens mounting frame 25 drives the convex lens 26 on the lens mounting frame 25 to move, thereby changing the focal position of the convex lens 26 on the lens mounting frame 25. At the same time, the rotation of the screw rod 27 drives the gear 1 32 to rotate, and the rotation of the gear 1 32 drives the gear 2 33 to rotate, thereby driving the rotating sleeve 34 to rotate. Since the rotating sleeve 34 and the screw rod 28 are in sliding connection, the rotation of the rotating sleeve 34 drives the screw rod 28 to rotate, thereby causing the nut 2 31 to move on the screw rod 28, thereby changing the distance between the lens mounting frame 1 24 and the lens mounting frame 25. As the distance between the two convex lenses 26 increases, the rotation of the screw rod 27 drives the gear 1 32 to rotate. As the distance between the two convex lenses 26 increases, the laser light beam on the convex lens 26 on the lens mounting frame 25 is more intensely focused, so that the focal position of the convex lens 26 on the lens mounting frame 25 is closer to the center point of the convex lens 26 on the lens mounting frame 25. During operation, as the cutting depth increases, the lens mounting frame 25 moves downward, and the lens mounting frame 1 24 also moves downward. The pitch of the screw rod 1 27 is smaller than the pitch of the screw rod 28. Therefore, the distance between the two convex lenses 26 is shrinking, and the light beam between the two convex lenses 26 is becoming more and more divergent. The focus of the convex lens 26 on the lens mounting frame 25 moves downward, and the convex lens 26 on the lens mounting frame 25 will also move downward. At this time, the focus will also move downward. Under the action of the two displacements, the single focus change of the convex lens 26 on the lens mounting frame 25 is increased, thereby expanding the maximum focus change.

[0085] As the focus changes, the focus of the laser is always gathered at the cutting position. At the same time, during the zooming process, the rotating sleeve 34 rotates to drive the sleeve 29 to rotate, and the rotating rod 20 is driven to rotate through the track roller and the track 39. The rotation of the rotating rod 20 drives the screw rod 3 40 to rotate, and the rotation of the screw rod 3 40 drives the nut 3 45 to move, thereby driving the sliding ring 36 to move through the fixed block 42, and the movement of the sliding ring 36 drives the rack 44 to move, thereby driving the rotating shaft to rotate through the gear 3 43, and the rotating shaft drives the nozzle 18 to rotate, so as to change the angle of the nozzle 18.

[0086] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A stainless steel thick plate laser cutting and welding integrated machine, comprising a control box (1), characterized in that: It also includes a sub-box (5) fixedly mounted on the side of the control box (1); A control unit, installed on the top and inside of the control chassis (1), and used to control the operation of various electrical components on the all-in-one machine, the control unit comprising a control panel (2) fixedly installed on the top of the control chassis (1), and a control system that matches the control panel (2) fixedly installed inside the control chassis (1); A placement portion, mounted on the upper part and inside the auxiliary box (5), for placing a thick stainless steel plate, the placement portion comprising a lifting platform (6) fixedly mounted on the top of the auxiliary box (5), a longitudinal displacement platform (7) fixedly mounted on the top of the lifting platform (6), a transverse displacement platform (8) slidably mounted on the longitudinal displacement platform (7), and a placement platform (9) slidably mounted on the transverse displacement platform (8); A welding and cutting section is installed on the top and inside of the control box (1) and is used in conjunction with a placement table (9) for cutting and welding thick stainless steel plates. The welding and cutting section comprises an inert gas cabin (3) fixedly installed on the top of the control box (1). A gas supply source connected to the inert gas cabin (3) is fixedly installed inside the control box (1). A cutting and welding head (4) is fixedly installed at one end of the inert gas cabin (3). The cutting and welding head (4) consists of two parts: a laser emission component and an inert gas protection component. The laser emission assembly comprises a gas guide head (10) fixedly mounted on one end of an inert gas chamber (3); an output coupling chamber (13) is fixedly mounted on the gas guide head (10); a lens mounting frame 1 (24) and a lens mounting frame 2 (25) are slidably mounted in the output coupling chamber (13); a convex lens (26) is fixedly mounted on each of the lens mounting frame 1 (24) and the lens mounting frame 2 (25); a focus adjustment mechanism matched with the lens mounting frame 2 (25) is mounted on the output coupling chamber (13); A laser medium cabin (12) is fixedly mounted on the top of the output coupling cabin (13), an excitation source (11) is fixedly mounted on the top of the laser medium cabin (12), an output head (14) is fixedly mounted on the bottom of the output coupling cabin (13), and a beam adjustment mechanism is mounted between the first lens mounting frame (24) and the second lens mounting frame (25); The focus adjustment mechanism comprises a fixing plate (21) fixedly mounted on the side of the output coupling cabin (13); a screw rod (27) is rotatably mounted on the fixing plate (21) via a rotating cylinder; a nut (30) is rotatably mounted on the screw rod (27); the nut (30) is fixedly connected to a lens mounting frame (25); a motor (23) is fixedly mounted on the fixing plate (21); a driving end of the motor (23) is connected to the screw rod (27) via a bevel gear set (35); The beam adjustment mechanism comprises a second screw rod (28) rotatably mounted on a second lens mounting frame (25), a second nut (31) being rotatably mounted on the second screw rod (28), the second nut (31) being fixedly connected to the first lens mounting frame (24), and a linkage structure being installed between the first screw rod (27) and the second screw rod (28); The inert gas protection assembly comprises a booster (15), a transformer (17) and a temperature booster (38) fixedly mounted on the side of the output coupling cabin (13); the booster (15) and the gas guide head (10), the booster (15) and the temperature booster (38), and the temperature booster (38) and the transformer (17) are all connected via a gas guide pipe (16); A fixing ring (41) is fixedly mounted on the output head (14), a plurality of nozzles (18) are rotatably mounted on the fixing ring (41), an annular gas cabin (19) is fixedly mounted on the output head (14), the annular gas cabin (19) and the plurality of nozzles (18) are connected via an air guide hose (37), the annular gas cabin (19) and the temperature riser (38) are connected via an air pipe, and an angle adjustment mechanism matching the plurality of nozzles (18) is mounted on the annular gas cabin (19); The angle adjustment mechanism comprises a sliding ring (36) slidably mounted on the outside of the annular gas cabin (19), a plurality of racks (44) being fixedly mounted on the sliding ring (36), a rotating shaft being fixedly mounted on each of the jet heads (18), each of the rotating shafts being rotationally connected to the fixed ring (41), a gear three (43) meshing with the corresponding rack (44) being fixedly mounted on each of the rotating shafts, and a driving component matching the sliding ring (36) being mounted on the output coupling cabin (13); The driving component comprises a fixed block (42) fixedly mounted on the sliding ring (36), the fixed block (42) being provided with a through hole, a nut three (45) being fixedly mounted in the through hole, a screw rod three (40) being threadedly rotatably mounted on the nut three (45), a rotating rod (20) being fixedly mounted on the screw rod three (40), the rotating rod (20) being rotatably connected to the output coupling cabin (13), and a transmission component being mounted between the screw rod two (28) and the rotating rod (20).

2. The stainless steel thick plate laser cutting and welding integrated machine according to claim 1, characterized in that: The linkage structure comprises a gear 1 (32) fixedly mounted on a screw rod 1 (27); a rotating sleeve (34) is slidably mounted on the screw rod 2 (28) via a sliding groove; the rotating sleeve (34) is rotationally connected to the fixed plate (21); and a gear 2 (33) meshing with the gear 1 (32) is fixedly mounted on the rotating sleeve (34).

3. The stainless steel thick plate laser cutting and welding integrated machine according to claim 2, characterized in that: The transmission component comprises a sleeve (29) fixedly mounted on a rotating sleeve (34), a track roller being fixedly mounted on the sleeve (29) and the rotating rod (20), and a track (39) being sleeved between the two track rollers.

4. The stainless steel thick plate laser cutting and welding integrated machine according to claim 1, characterized in that: The output coupling cabin (13) is provided with a storage slot that matches the first lens mounting frame (24) and the second lens mounting frame (25), and a telescopic sealing plate (22) that matches the first lens mounting frame (24) and the second lens mounting frame (25) is fixedly mounted outside the storage slot.

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