A laser cutting device for tower plate processing

Abstract

The application discloses a kind of laser cutting devices for iron tower plate processing, it is related to iron tower plate processing technical field, including cutting machine platform, and laser cutting head is installed on cutting machine platform, further include the self-rotating motion of several telescopic needles that can be installed in laser cutting head side, the telescopic needle can walk with laser cutting head synchronization and just melt the molten slag of laser cutting head focal point place peeling cutting area, the outside of telescopic needle is equipped with the positioning track for guiding telescopic needle directional movement to cutting seam center, the outside of positioning track is equipped with control component, by telescopic needle, the molten slag under laser focal point is timely stripped in this area, upper layer molten slag is reduced, improve the conventional efficiency of laser energy, prevent adhesion, and cooperate control component and evenly spread upper layer molten slag in cutting seam two sides, utilize molten slag to form physical barrier, secondary utilization is carried out to upper layer molten slag, reduce heat affected zone, protect the adjacent area of laser cutting head.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of iron tower plate processing, in particular to a laser cutting device for iron tower plate processing. BACKGROUND

[0002] Iron tower plates are important materials for building iron towers, and in the iron tower plate processing process, a laser cutting machine is often used to cut the iron tower plates into the required shape and size.

[0003] The laser cutting machine focuses high-energy-density laser beams on the surface of the iron tower plate, so that the irradiated area is instantaneously melted, vaporized or reaches the ignition point, and at the same time, the molten slag is blown away with the help of auxiliary gas (such as oxygen, nitrogen, etc.), so as to realize accurate cutting of the plate. The laser incision is smooth and free of burrs, and the heat-affected zone is small, avoiding problems such as cracks and excessively thick oxidation layers that may be caused by traditional cutting. The traditional cutting process of polishing and edge trimming is omitted, reducing labor costs and processing time.

[0004] When cutting thick plates with the laser cutting machine, higher energy density is indeed required because more material needs to be melted for thick plates, and heat is more easily conducted and diffused to the inside, so higher energy concentration is needed to ensure incision penetration and edge quality, and the cutting speed also needs to be reduced, and thick plates need to be cut at a slower speed to ensure that the energy can fully act.

[0005] However, in actual operation, it is found that when cutting thick plates, the energy distribution in the thickness direction of the plate is not uniform after the laser beam is focused. As the laser enters from the upper layer, the energy gradually decays with the penetration depth. The energy received by the upper layer material may be too strong, causing excessive melting and vaporization, and even a horn-shaped incision with a wide upper part and a narrow lower part, edge burning or excessive molten slag attachment.

[0006] In addition, because there is a large amount of molten slag on the upper layer, if the molten slag cannot be cleaned in the first time, it will cause a certain obstruction to the laser beam, which may cause the lower layer plate to not be completely melted or vaporized due to insufficient energy reception, resulting in incomplete cutting and serious slag hanging.

[0007] In addition, because the plate is thick, after the auxiliary gas is sprayed from the nozzle, it will be hindered by the upper layer of molten slag during the process of penetrating the thick plate incision, and the blowing capacity of the auxiliary gas for the molten slag will be greatly weakened. Even the molten slag may flow back and accumulate at the bottom of the incision due to insufficient pressure, causing adhesion.

[0008] In view of the above problems, it is urgent to make innovative design on the basis of the original laser cutting device. SUMMARY

[0009] The technical scheme of the present application aims at the technical problem that the prior art solution is too single, and provides a solution significantly different from the prior art, and specifically aims to provide a laser cutting device for iron tower plate processing to solve the problem that the upper layer of the plate is melted too strongly when a conventional laser cutting machine cuts thick plates, resulting in more upper layer slag and insufficient lower layer energy causing slag sticking.

[0010] To achieve the above object, the present application provides the following technical scheme: a laser cutting device for iron tower plate processing, comprising a cutting machine table and a laser cutting head installed on the cutting machine table, further comprising a plurality of telescopic needles capable of self-rotating motion installed on one side of the laser cutting head, the telescopic needles can walk synchronously with the laser cutting head and strip the molten slag just melted at the focal point of the laser cutting head from the cutting area, a positioning track for guiding the telescopic needles to move directionally to the center of the cutting seam is installed on the outer side of the telescopic needles, a control and distribution assembly is installed on the outer side of the positioning track, and the control and distribution assembly can make the plurality of telescopic needles tilt alternately to the two sides of the cutting seam in sequence and evenly smear the molten slag to form a continuous protective barrier, and a mounting bracket is installed on the top of the laser cutting head.

[0011] Preferably, the control and distribution assembly comprises a rotating shaft rotationally connected with the mounting bracket, the surface of the rotating shaft is fixedly connected with an inner rotating disc and an outer rotating disc respectively, the inner rotating disc and the outer rotating disc are arranged in parallel, and one end of the rotating shaft is installed with an output shaft of a driving motor.

[0012] Preferably, the surface of the inner rotating disc and the outer rotating disc is provided with a hole, a limiting rod for connecting the telescopic needle is penetrated through each hole, and a first spring is fixedly connected with the outer surface of the inner rotating disc and the outer rotating disc at a position corresponding to each hole, and the limiting rod is connected with the first spring in a sleeving manner.

[0013] The holes on the surface of the inner rotating disc and the holes on the surface of the outer rotating disc are alternately distributed.

[0014] Preferably, the telescopic needle comprises a spherical universal joint fixedly connected with the outer wall of the rotating shaft, and a sleeve tube fixedly connected with the spherical body part of the spherical universal joint, a needle plug is slidably connected in the sleeve tube, and a second spring is installed in the sleeve tube.

[0015] Preferably, the front end of the needle plug extends to the outside of the sleeve tube, the end of the needle plug is connected with the second spring in a sleeving manner, and the front end surface of the needle plug is provided with an inclined surface, the needle plug can slide axially along the inner wall of the sleeve tube, and the second spring is compressed.

[0016] Preferably, one end of each limiting rod is welded with a limiting steel ball, and the other end of each limiting rod is fixedly connected with the outer wall of the sleeve tube.

[0017] The inner side rotating disc and the outer side rotating disc are rotationally connected with connecting rods near the holes, the connecting rods are distributed in one-to-one correspondence with the telescopic needles, and the connecting rods and the outer sleeves of the telescopic needles are rotationally connected.

[0018] Preferably, the positioning track comprises an adapter rod fixedly connected with the mounting frame, the adapter rod is fixedly connected with two straight guide rods at the bottom, the two straight guide rods are distributed in one-to-one correspondence with the inner side rotating disc and the outer side rotating disc, and the front half of each straight guide rod is welded with an arc-shaped rod, the rear half of one straight guide rod is bent towards the inner side rotating disc, and the rear half of the other straight guide rod is bent towards the outer side rotating disc.

[0019] Preferably, gaps exist between the two straight guide rods, and the telescopic needles are located at the gaps between the two straight guide rods, and the insertion needles of the telescopic needles are attached to the inner walls of the straight guide rods.

[0020] Compared with the prior art, the present application has the following advantages:

[0021] By installing self-rotating telescopic needles on one side of the laser cutting head, the telescopic needles move synchronously with the laser cutting head, the telescopic needles are connected with the rotating shaft through the spherical universal joint, so that the telescopic needles can freely adjust the direction, the slope design of the front end of the insertion needle makes the insertion needle and the laser cutting head flexible contact and compression, after avoiding the shell of the laser cutting head, the resistance disappears, the second spring pushes the insertion needle to extend out again and extend to the focal point of the laser cutting head, so that the insertion needle can always be inserted at the best angle below the focal point of the laser cutting head, the upper layer of slag on the cutting area is peeled off in time, the upper layer of slag is reduced, the laser energy and the penetration force of the gas are stronger, the auxiliary gas is less blocked, the flow rate of the auxiliary gas is more stable, and the blowing effect on the lower layer of slag is better.

[0022] In addition, the control assembly controls the telescopic needles to alternately tilt to both sides of the cutting seam, the elastic potential of the first spring directly acts on the limiting steel ball, and is transmitted to the limiting rod and the outer sleeve through the limiting steel ball, so that the outer side rotating disc and the inner side rotating disc pull each telescopic needle in turn to operate alternately, and the upper layer of slag pushed out from the cutting seam is evenly applied to both sides of the cutting seam by the telescopic needles during the alternating operation, so that the upper layer of slag is secondarily utilized, the excess slag is treated, and the slag forms a protective effect to form a continuous physical barrier, which helps to reduce the heat affected zone and protect the area adjacent to the laser cutting head, and effectively prevents excessive melting at the upper layer of the cutting seam.

[0023] In addition, the telescopic needle is guided and transmitted in sequence by the two straight guide rods, and the telescopic needle can be further limited by the connection of the arc-shaped rods, so that the telescopic needle always keeps central positioning before entering the cutting seam, the gap exists between the two straight guide rods, the needle insertion part of the telescopic needle is tightly attached to the inner wall of the straight guide rod, the needle insertion part is provided with stable guiding constraint, the telescopic needle can be oriented and rotated to the center of the cutting seam each time, and the accuracy of cleaning and subsequent operation is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the application.

[0025] Figure 2 It is a schematic diagram of the structure of the control assembly and the laser cutting head of the application.

[0026] Figure 3 It is a schematic diagram of the structure of the control assembly of the application.

[0027] Figure 4 It is a schematic diagram of the structure of the control assembly of the application. Figure 3 It is a schematic diagram of the structure of the control assembly of the application.

[0028] Figure 5 It is a schematic diagram of the structure of the positioning track and the telescopic needle of the application.

[0029] Figure 6 It is a schematic diagram of the structure of the telescopic needle of the application.

[0030] Figure 7 It is a schematic diagram of the structure of the telescopic needle of the application.

[0031] Figure 8 It is a schematic diagram of the structure of the telescopic needle of the application.

[0032] In the figure: 1, cutting machine table; 2, laser cutting head; 3, telescopic needle; 301, spherical universal joint; 302, outer sleeve; 303, needle insertion; 304, second spring; 4, control assembly; 401, rotating shaft; 402, inner rotating disc; 403, outer rotating disc; 404, limiting rod; 405, first spring; 406, limiting steel ball; 407, connecting rod; 408, driving motor; 5, positioning track; 501, connecting rod; 502, straight guide rod; 503, arc-shaped rod; 6, mounting frame. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the application.

[0034] Referring to Figures 1 to 8 The application provides a technical scheme: a laser cutting device for iron tower plate processing, which comprises a cutting machine table 1, a laser cutting head 2 installed on the cutting machine table 1, a plurality of telescopic needles 3 installed on one side of the laser cutting head 2 and capable of rotating by themselves, the telescopic needles 3 can walk synchronously with the laser cutting head 2 and strip molten slag just melted at a focal point of the laser cutting head 2 from a cutting seam, a positioning track 5 is installed on the outside of the telescopic needles 3 and used for guiding directional movement of the telescopic needles 3 to the center of the cutting seam, a control and arrangement assembly 4 is installed on the outside of the positioning track 5, and the control and arrangement assembly 4 can make the plurality of telescopic needles 3 tilt alternately to both sides of the cutting seam in sequence and uniformly smear the molten slag to form a continuous protective barrier, and a mounting rack 6 is installed on the top of the laser cutting head 2.

[0035] By installing the telescopic needles 3 rotating by themselves on one side of the laser cutting head 2, the telescopic needles 3 move synchronously with the laser cutting head 2, one end of the telescopic needles 3 can be extended to just below the focal point of the laser cutting head 2, the upper layer of molten slag just melted is timely stripped from the cutting area, which helps to improve the cutting quality, prevent the upper layer of molten slag from accumulating, make the energy of the laser beam better transmitted, reduce the shielding of the auxiliary gas, make the flow rate of the auxiliary gas more stable, and make the blowing effect on the lower layer of molten slag better and reduce the slag hanging and adhesion phenomenon.

[0036] In addition, the telescopic needles 3 are controlled by the control and arrangement assembly 4 to tilt alternately to both sides of the cutting seam, and the upper layer of molten slag pulled out from the cutting seam is uniformly smeared on both sides of the cutting seam by the telescopic needles 3 in the tilting process, the upper layer of molten slag is secondarily utilized, the excess molten slag is treated, the molten slag is utilized to form a protection and a continuous physical barrier, which helps to reduce the heat affected zone, protect the area adjacent to the laser cutting head 2, effectively prevent the upper layer of the cutting seam from excessive melting, and the positioning track 5 ensures that the telescopic needles 3 can accurately move to the center of the cutting seam, and the accuracy of cleaning and subsequent operation is ensured.

[0037] In the embodiment, as shown in Figure 2 and Figure 3 The control and arrangement assembly 4 comprises a rotating shaft 401 rotationally connected with the mounting rack 6, inner and outer rotating discs 402 and 403 fixedly connected with the surface of the rotating shaft 401 respectively, and the inner and outer rotating discs 402 and 403 are arranged in parallel, and one end of the rotating shaft 401 is provided with an output shaft of a driving motor 408.

[0038] The surfaces of the inner and outer rotating discs 402 and 403 are provided with holes, a limiting rod 404 for connecting the telescopic needles 3 is penetrated through each hole, a first spring 405 is fixedly connected with the outer surface of the inner and outer rotating discs 402 and 403 at positions corresponding to each hole, and the one end of the limiting rod 404 is connected with the first spring 405 in a sleeving mode.

[0039] The holes on the surface of the inner rotating disc 402 and the holes on the surface of the outer rotating disc 403 are alternately distributed;

[0040] It should be noted that the driving motor 408 drives the inner rotating disc 402 and the outer rotating disc 403 to rotate synchronously through the rotating shaft 401, the number of the limiting rods 404 corresponds to the telescopic needles 3 in the embodiment, and the limiting rods 404 are respectively distributed on the inner rotating disc 402 and the outer rotating disc 403, and the holes on the surface of the inner rotating disc 402 and the holes on the surface of the outer rotating disc 403 are alternately distributed, one end of the limiting rod 404 is connected with the telescopic needle 3, and the rotation of the inner rotating disc 402 and the outer rotating disc 403 is directly transmitted to the telescopic needle 3 for controlling the deflection of the telescopic needle 3;

[0041] Specifically, the inner rotating disc 402 is used to drive the telescopic needle 3 connected with the inner rotating disc 402 to deflect inward, and the outer rotating disc 403 is used to drive the telescopic needle 3 connected with the outer rotating disc 403 to deflect outward, and since the holes of the inner rotating disc 402 and the outer rotating disc 403 are alternately distributed, when the rotating disc rotates, the telescopic needles 3 corresponding to the telescopic rods are sequentially constrained by different holes, so that the telescopic needles 3 alternately act according to the preset rhythm, and the mutual interference of the plurality of telescopic needles 3 during work is avoided.

[0042] The first spring 405 is sleeved with one end of the limiting rod 404, and in the natural state, the first spring 405 is always in the compressed state, the elastic potential energy of the first spring 405 is used to provide pressure for the telescopic needle 3 to tilt to the side or the inner side, so that the telescopic needle 3 sequentially tilts to the both sides of the slit, and the action cycle of removing the molten slag at the focal point and forming a protective barrier is completed.

[0043] In the embodiment, as shown in Figure 6 The telescopic needle 3 includes a spherical universal joint 301 fixedly connected with the outer wall of the rotating shaft 401, and a sleeve tube 302 fixedly connected with the spherical body part of the spherical universal joint 301, the sleeve tube 302 is slidably connected with a plug needle 303 in the inside, and the second spring 304 is installed in the inside of the sleeve tube 302;

[0044] The front end of the plug needle 303 extends to the outside of the sleeve tube 302, and the end of the plug needle 303 and the second spring 304 are sleeved, and the front end surface of the plug needle 303 is inclined, the plug needle 303 can slide axially along the inner wall of the sleeve tube 302, and is accompanied by compression of the second spring 304;

[0045] Need to explain, through the spherical universal joint 301 link telescopic needle 3 and the rotating shaft 401, so that the telescopic needle 3 can freely adjust the direction, ensure that the pin 303 can always contact and handle the upper layer of slag with the best angle, the pin 303 can slide along the inner wall of the outer sleeve tube 302, accompanied by the compression and release of the second spring 304, realize the telescopic function, realize the operation of the slag and the inclined slag smearing in turn;

[0046] Specifically, in the normal state, due to the action of the second spring 304, the pin 303 is in the state of outward extension, when the rotation and the shell of the laser cutting head 2 contact, encounter greater resistance, the pin 303 will shrink inward, the second spring 304 is compressed, prevent the hard extrusion with the laser cutting head 2, the slope design of the front end of the pin 303 is beneficial to reduce the insertion resistance, prevent the wear of the shell of the laser cutting head 2;

[0047] Similarly, after avoiding the shell of the laser cutting head 2, the resistance disappears, the second spring 304 pushes the pin 303 to extend again, and extends to the focal point of the laser cutting head 2, the upper layer of slag on the cutting area is peeled off to the rear, the upper layer of slag is reduced, the laser energy and the penetration of the gas are stronger, and the cutting effect is better;

[0048] In addition, it needs to be particularly pointed out that all parts are made of high temperature resistant materials, especially the telescopic needle 3 directly contacted with the laser beam, which is made of high temperature resistant composite ceramic material, the melting point is higher than that of the material of the iron tower plate, and the wear resistance is good, and the oxidation resistance is better.

[0049] In the embodiment, as shown in Figure 4 , Figure 7 and Figure 8 Each limiting rod 404 is welded with a limiting steel ball 406 at one end, and the other end of each limiting rod 404 is fixedly connected with the outer wall of the outer sleeve tube 302;

[0050] The inner side rotating disc 402 and the outer side rotating disc 403 are rotatably connected with the connecting rod 407 near the hole, the connecting rod 407 is distributed one by one with the plurality of telescopic needles 3, and the connecting rod 407 and the outer sleeve tube 302 of the telescopic needle 3 are rotatably connected;

[0051] It needs to be explained that one end of each limiting rod 404 is welded with a limiting steel ball 406, the limiting steel ball 406 abuts against one end of the first spring 405, the other end of the first spring 405 is fixedly connected with the inner rotating disc 402 and the outer rotating disc 403, and the first spring 405 is wrapped around the holes on the inner rotating disc 402 and the outer rotating disc 403, the elastic potential energy of the first spring 405 directly acts on the limiting steel ball 406, and is transmitted to the limiting rod 404 and the outer sleeve pipe 302 through the limiting steel ball 406, and the stretching and retracting needle 3 is pulled in sequence by the pulling of the respective connecting rods 407, and the stretching and retracting needle 3 is sequentially and alternately operated in sequence;

[0052] Specifically, the number of the connecting rods 407 corresponds to the stretching and retracting needle 3 and the limiting rod 404 one by one, and is alternately distributed on the inner rotating disc 402 and the outer rotating disc 403, for example, the first connecting rod 407 is rotationally connected with the inner rotating disc 402, and the second connecting rod 407 is rotationally connected with the outer rotating disc 403, so that the tilting action of the stretching and retracting needle 3 is sequentially performed, for example, when the inner rotating disc 402 and the outer rotating disc 403 rotate at the same time, the connecting rod 407 connected with the inner rotating disc 402 pushes the outer sleeve pipe 302 to make the stretching and retracting needle 3 tilt inward, and the connecting rod 407 connected with the outer rotating disc 403 pulls the outer sleeve pipe 302 to make the stretching and retracting needle 3 tilt outward, the two operation modes are alternately and circularly performed, and the function requirement of alternately and sequentially applying the molten slag to the outer side and the inner side of the slit to form a protective barrier is realized.

[0053] Further, one end of each connecting rod 407 away from the rotating disc is provided with an oval through slot, a pin is inserted in the slot, the bottom of the pin is fixedly connected with the outer sleeve pipe 302, and the pin can slide in the oval through slot within a small range, when the stretching and retracting needle 3 tilts outward or inward, the breakpoint position of one end of the connecting rod 407 does not change, and the other end will tilt by a certain angle, and the oval through slot provides a small-angle adjustment space for the tilting of the connecting rod 407.

[0054] In the embodiment, as shown in Figure 1 and Figure 5 , the positioning track 5 includes a connecting rod 501 fixedly connected with the mounting frame 6, the bottom of the connecting rod 501 is fixedly connected with two straight guide rods 502 respectively, the two straight guide rods 502 are correspondingly distributed with the inner rotating disc 402 and the outer rotating disc 403 respectively, and the front half of each straight guide rod 502 is welded with an arc-shaped rod 503, the rear half of one straight guide rod 502 is bent towards the inner rotating disc 402, and the rear half of the other straight guide rod 502 is bent towards the outer rotating disc 403.

[0055] In the embodiment, as shown in Figure 5 , there is a gap between the two straight guide rods 502, and the stretching and retracting needle 3 is located at the gap between the two straight guide rods 502, and the pin 303 of the stretching and retracting needle 3 is attached to the inner wall of the straight guide rod 502.

[0056] It should be noted that the two straight guide rods 502 are parallel, one corresponding to the inner rotating disc 402, the rear half of which is bent towards the inner rotating disc 402, and the other corresponding to the outer rotating disc 403, the rear half of which is bent towards the outer rotating disc 403, and the rear halves of the two straight guide rods 502 form a V-shaped opening, which facilitates the docking of the telescopic needle 3;

[0057] In addition, the front half of each of the two straight guide rods 502 is welded with an arc-shaped rod 503, through the connection of the arc-shaped rod 503, the telescopic needle 3 can be further limited, so that the telescopic needle 3 always maintains central positioning before entering the slit, there is a gap between the two straight guide rods 502, and all the telescopic needles 3 are located in the gap, and the pin 303 part of the telescopic needle 3 is tightly attached to the inner wall of the straight guide rod 502, providing stable guidance and restraint for the pin 303, so that the telescopic needle 3 can be oriented and rotated to the center of the slit each time.

[0058] Working principle: when using the laser cutting device for tower plate processing, first start the laser cutting head 2, through the connection of the mounting bracket 6, the laser cutting head 2 moves synchronously with the control assembly 4 and the positioning guide rail, adjusts the energy of the laser cutting head 2 according to the thickness of the plate, starts the driving motor 408, drives the rotating shaft 401 to rotate, and further drives the inner rotating disc 402 and the outer rotating disc 403 fixed thereon to rotate synchronously;

[0059] Because the holes of the inner rotating disc 402 and the outer rotating disc 403 are alternately distributed, when the inner rotating disc 402 rotates, the limiting rod 404 of the inner rotating disc 402 rotates synchronously, the limiting rod 404 rotates synchronously with the telescopic needle 3 corresponding to the inner rotating disc 402, and the telescopic needle 3 of the inner rotating disc 402 moves along the following path:

[0060] When the telescopic needle 3 is located above the slit, the telescopic needle 3 is located at the gap of the straight guide rod 502, and the pin 303 at the front end of the telescopic needle 3 slides along the inner wall of the two straight guide rods 502, so that the telescopic needle 3 is always aligned with the slit;

[0061] Next, the telescopic needle 3 enters the arc-shaped rod 503 stage, at this time, the pin 303 at the front end of the telescopic needle 3 contacts the shell of the laser cutting head 2, the pin 303 starts to gradually shrink inward, and when the pin 303 passes through the laser cutting head 2, the pin 303 is quickly ejected under the elastic force of the second spring 304, directly probes below the focal point of the laser cutting head 2, and separates the just melted slag from the cutting area;

[0062] Then, at this time, the telescopic needle 3 has been out of the area positioned by the arc-shaped rod 503, the elastic force of the first spring 405 starts to squeeze, the limiting steel ball 406 of the limiting rod 404 slides outward, the limiting rod 404 pulls the corresponding telescopic needle 3 of the inner rotating disc 402 to move closer to the inner rotating disc 402, at this time, due to the limiting of the bottom spherical universal joint 301, the upper half of the telescopic needle 3 starts to tilt towards the inner rotating disc 402;

[0063] At the same time, the connecting rod 407 connected with the telescopic needle 3 also starts to tilt towards the inner rotating disc 402, one end of the connecting rod 407 is fixed on the inner rotating disc 402, and the other end is close, so that the connecting rod 407 starts to offset backward, through the offset of the connecting rod 407, the telescopic needle 3 is pushed to rotate in the direction of the inner rotating disc 402, and the just stripped slag is smeared on the inner side of the kerf, until the telescopic needle 3 rotates to the top and contacts the positioning track 5 again;

[0064] Similarly, the telescopic needle 3 connected with the outer rotating disc 403, in the initial stage, repeats the movement rhythm of the previous telescopic needle 3, in the second half, the telescopic needle 3 tilts towards the outer rotating disc 403, smears the slag on the outer side of the kerf, and so on, a plurality of telescopic needles 3 work in this order alternately, forming a continuous smearing action, and finally forming a continuous protective barrier uniformly on both sides of the kerf;

[0065] Finally, as the upper layer of slag is continuously stripped from the cutting area, the amount of residual upper layer of slag decreases, and the laser energy can quickly penetrate the lower layer of plate at the same time, and at the same time, a small amount of lower layer of slag is blown away by the auxiliary gas. The specific cutting method and the operation of the laser cutting head 2 belong to the known technology in the art.

[0066] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A laser cutting device for processing tower plates, comprising a cutting machine table (1) and a laser cutting head (2) installed on the cutting machine table (1), characterized in that: Also include installed on the one side of the laser cutting head (2) can be self-rotating movement of several telescopic needle (3), the telescopic needle (3) can be synchronized with the laser cutting head (2) and the laser cutting head (2) focus point just melt slag stripping cutting area, the outside of the telescopic needle (3) is provided with positioning track (5) for guiding telescopic needle (3) directional movement to the center of the slit, the outside of the positioning track (5) is provided with control component (4), and the control component (4) can make several telescopic needle (3) in order to alternate to the both sides of the slit and evenly smear the slag to form a continuous protective barrier, the top of the laser cutting head (2) is provided with a mounting bracket (6), the control component (4) includes a rotating shaft (401) rotatably connected with the mounting bracket (6), the surface of the rotating shaft (401) is fixedly connected with an inner rotating disc (402) and an outer rotating disc (403), respectively, and the inner rotating disc (402) and the outer rotating disc (403) are parallel structure, one end of the rotating shaft (401) is provided with the output shaft of the driving motor (408); The surface of the inner rotating disc (402) and the outer rotating disc (403) is provided with a hole, and a limiting rod (404) for connecting the telescopic needle (3) is penetrated in each hole, and a first spring (405) is fixedly connected on the outer surface of the inner rotating disc (402) and the outer rotating disc (403) corresponding to each hole, the limiting rod (404) and the first spring (405) are connected in a sleeved manner; The holes on the surface of the inner rotating disc (402) and the outer rotating disc (403) are alternately distributed; The telescopic needle (3) includes a spherical universal joint (301) fixedly connected with the outer wall of the rotating shaft (401), and an outer sleeve (302) fixedly connected with the spherical body part of the spherical universal joint (301), the inner part of the outer sleeve (302) is slidably connected with a needle (303), and the inner part of the outer sleeve (302) is provided with a second spring (304); One end of each limiting rod (404) is welded with a limiting steel ball (406), and the other end of each limiting rod (404) is fixedly connected with the outer wall of the outer sleeve (302); The inner wall of the inner rotating disc (402) and the outer rotating disc (403) is rotatably connected with a connecting rod (407) near the hole, the connecting rod (407) is distributed one by one corresponding to the telescopic needle (3), and the connecting rod (407) and the outer sleeve (302) of the telescopic needle (3) are rotatably connected; The positioning track (5) comprises a connecting rod (501) fixedly connected with the mounting frame (6), the bottom of the connecting rod (501) is fixedly connected with two straight guide rods (502) respectively, the two straight guide rods (502) are distributed in one-to-one correspondence with the inner rotating disc (402) and the outer rotating disc (403) respectively, and the front half of the two straight guide rods (502) is welded with an arc-shaped rod (503) respectively, the rear half of one of the straight guide rods (502) is bent towards the inner rotating disc (402), and the rear half of the other straight guide rod (502) is bent towards the outer rotating disc (403). There is a gap between the two straight guide rods (502), the telescopic needle (3) is located at the gap between the two straight guide rods (502), and the insertion needle (303) of the telescopic needle (3) is attached to the inner wall of the straight guide rod (502).

2. The laser cutting device for processing tower plate according to claim 1, characterized in that: The front end of the insertion needle (303) extends to the outside of the outer sleeve (302), the end of the insertion needle (303) and the second spring (304) are connected in a sleeved manner, and the front end face of the insertion needle (303) is an inclined surface, the insertion needle (303) can slide axially along the inner wall of the outer sleeve (302), and is accompanied by compression of the second spring (304).

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