High-magnetic-induction low-iron-loss oriented silicon steel laser cutting equipment

Abstract

The invention relates to the technical field of laser cutting, in particular to high-magnetic-induction low-iron-loss oriented silicon steel laser cutting equipment which comprises a nozzle, a hollow rod and a second pipeline. A nozzle is screwed on the laser transmitter; a hollow rod is screwed in the nozzle; a pipeline II is fixedly connected to the laser transmitter; a flange part I is arranged at the upper part of the hollow rod and is screwed with the nozzle; a conical part is arranged at the lower part of the hollow rod; a cavity and an annular channel are formed between the nozzle and the hollow rod, air can form an annular air curtain at the cutting position after flowing out of the cavity and the annular channel, splashing slag, steam, dust and other impurities are blocked through the annular air curtain, the slag is prevented from splashing and being attached to the lower ends of the nozzle and the hollow rod, and interference to cutting operation is avoided; the annular air curtain wraps the outer side of oxygen to form constraint airflow, the oxygen flow speed and focusing performance are improved, slag splashing is reduced, and the focus lens is protected.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laser cutting. More particularly, the present application relates to a high magnetic induction low iron loss oriented silicon steel laser cutting device. BACKGROUND

[0002] High magnetic induction low iron loss oriented silicon steel is known for its excellent high magnetic induction strength and low core loss characteristics. However, when machining this material using a laser cutting machine, a large amount of impurities such as metal vapor, slag and dust will be generated during the cutting process. These impurities will spread around the laser cutting head and are prone to deposit on the lens inside the cutting head. Over time, the deposits on the lens will cause the focusing point to deviate and the light path to be abnormal, thereby seriously affecting the cutting quality and causing the cutting precision and effect to be greatly reduced.

[0003] In view of the above, the present application provides a high magnetic induction low iron loss oriented silicon steel laser cutting device to improve the above-mentioned technical problems. SUMMARY

[0004] In order to overcome the shortcoming that the impurities generated during cutting will adhere to the lens of the laser cutting head, interfering with the laser cutting operation, the present application provides a high magnetic induction low iron loss oriented silicon steel laser cutting device.

[0005] TECHNICAL SOLUTION A high magnetic induction low iron loss oriented silicon steel laser cutting device, comprising a laser emitter and a pipeline one; the laser emitter is connected with the pipeline one; further comprising a nozzle, a hollow rod and a pipeline two; the laser emitter is rotatably connected with the nozzle; the nozzle is rotatably connected with the hollow rod; the laser emitter is fixedly connected with the pipeline two; a flange part one is arranged on the upper part of the hollow rod, and the flange part one is rotatably connected with the nozzle; a tapered part is arranged on the lower part of the hollow rod; an inclined surface part is arranged on the lower part of the nozzle, and the inclined surface part is attached to the tapered part; a flange part two is arranged in the nozzle; a cavity is formed between the nozzle and the hollow rod; the cavity is divided into an upper chamber and a lower chamber by the flange part two; a flow channel one is formed on the nozzle, and the flow channel one is in communication with the lower chamber of the cavity; a flow channel two is formed on the laser emitter, and the flow channel two is in communication with the flow channel one and the pipeline two.

[0006] More preferably, the high magnetic induction low iron loss oriented silicon steel laser cutting device further comprises a convex strip one; a plurality of convex strip ones are fixedly connected to the lower side of the nozzle.

[0007] More preferably, the high magnetic induction low iron loss oriented silicon steel laser cutting device further comprises a convex strip two; a plurality of convex strip twos are fixedly connected to the lower side of the hollow rod.

[0008] More preferably, the high-magnetic-induction low-iron-loss oriented silicon steel laser cutting device further comprises a pipeline three; the hollow rod is provided with a groove, and the groove is aligned with the flange part two; the laser emitter is fixedly connected with the pipeline three; the nozzle is provided with a flow channel three, and the flow channel three is communicated with the upper cavity of the cavity; the laser emitter is provided with a flow channel four, and the flow channel four is communicated with the flow channel three and the pipeline three.

[0009] More preferably, the high-magnetic-induction low-iron-loss oriented silicon steel laser cutting device further comprises an auxiliary assembly, and the auxiliary assembly comprises a connecting block, a spring and a screw; the hollow rod is fixedly connected with a plurality of connecting blocks; each connecting block is fixedly connected with a spring, and the spring is fixedly connected with the conical part; the conical part is slidingly arranged on the surface of the hollow rod; the screw is threadedly connected with the conical part.

[0010] More preferably, the high-magnetic-induction low-iron-loss oriented silicon steel laser cutting device, the laser emitter inside is provided with cooling liquid circulation system.

[0011] More preferably, the high-magnetic-induction low-iron-loss oriented silicon steel laser cutting device, the laser emitter is provided with a temperature sensor.

[0012] More preferably, the high-magnetic-induction low-iron-loss oriented silicon steel laser cutting device, the laser emitter is provided with an infrared sensor.

[0013] More preferably, the high-magnetic-induction low-iron-loss oriented silicon steel laser cutting device, the nozzle and the hollow rod are made of wear-resistant materials.

[0014] More preferably, the high-magnetic-induction low-iron-loss oriented silicon steel laser cutting device, the hollow rod is made of high-temperature-resistant materials.

[0015] Compared with the prior art, the present application has the following advantages: One, a cavity and an annular channel are formed between the nozzle and the hollow rod, air flows out of the cavity and the annular channel to form an annular air curtain at the cutting position, impurities such as splashed slag, steam and dust are blocked by the annular air curtain, preventing the splashed slag from splashing and adhering to the lower end of the nozzle and the hollow rod, avoiding interference with the cutting operation, at the same time, the annular air curtain is wrapped outside the oxygen to form a constrained airflow, improving the oxygen flow rate and focusing property, reducing slag splashing, and protecting the focusing mirror, at the same time, nitrogen flows in the cavity and the annular channel to take away heat from the hollow rod for cooling, avoiding high temperature of the hollow rod affecting the laser cutting operation, at the same time, the hollow rod is movably arranged, the size of the annular channel is adjusted by adjusting the height of the hollow rod, so that the strength of the annular air curtain can be adjusted to adapt to different cutting scenes, and the universality is high, at the same time, after the hollow rod is movably arranged, a single-channel air cutting mode can be switched to cut thick plates, and the flow channel in the cavity is changed under the cooperation of the groove, at this time, low-temperature air is transported into the cavity to cool the hollow rod, to meet the greater heat dissipation demand of air cutting, and after changing the flow channel, the low-temperature air will not be sprayed to the cutting position to interfere with the laser cutting operation; Two, the tapered portion is movably arranged on the hollow rod, and then the tapered portion is reciprocated up and down by the cooperation of the intermittently flowing air and the spring, so that the impurities remaining on the tapered portion and the inclined surface portion are stripped and blown away, avoiding the problem of difficult cleaning. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The structure schematic diagram of the high-magnetic-induction low-iron-loss oriented silicon steel laser cutting equipment is shown; Figure 2 The sectional view of the high-magnetic-induction low-iron-loss oriented silicon steel laser cutting equipment is shown; Figure 3 The front view of the high-magnetic-induction low-iron-loss oriented silicon steel laser cutting equipment is shown; Figure 4 The structure schematic diagram of the inside of the nozzle is shown; Figure 5 The structure schematic diagram of the hollow rod is shown; Figure 6 The cleaning state of the hollow rod is shown.

[0017] Among them, the above drawings include the following reference signs: 1-laser emitter, 2-pipe one, 3-nozzle, 4-hollow rod, 5-pipe two, 201-convex strip one, 202-convex strip two, 203-pipe three, 204-connection block, 205-spring, 206-screw, 91-flange part one, 92-tapered portion, 93-inclined surface portion, 94-flange part two, 95-cavity, 96-flow channel one, 97-flow channel two, 98-groove, 99-flow channel three, 910-flow channel four. Detailed Implementation

[0018] Although the invention may be described with respect to specific applications or industries, those skilled in the art will recognize its broader applicability. Those skilled in the art will understand that terms such as "above," "below," "upward," "downward," etc., are used to describe the drawings and not to indicate a limitation on the scope of the invention as defined by the appended claims. Any numerical designations such as "first" or "second" are merely illustrative and not intended to limit the scope of the invention in any way.

[0019] Example 1: A laser cutting device for high magnetic induction and low iron loss oriented silicon steel, such as... Figures 1-4 As shown, it includes a laser emitter 1 and a pipe 2; the laser emitter 1 is connected to and fixed to the pipe 2, through which auxiliary gas is supplied to the laser emitter 1; it also includes a nozzle 3, a hollow rod 4, and a pipe 5; the nozzle 3 is screwed onto the laser emitter 1; the hollow rod 4 is screwed into the nozzle 3; the pipe 5 is fixed onto the laser emitter 1, and the pipe 5 is made of metal; the upper part of the hollow rod 4 is provided with a flange 91, which is screwed onto the nozzle 3; the lower part of the hollow rod 4 is provided with... The nozzle 3 has a conical part 92; the lower part of the nozzle 3 has a beveled part 93, which fits into the conical part 92; the nozzle 3 has a flange part 94; a cavity 95 is formed between the nozzle 3 and the hollow rod 4; the cavity 95 is divided into an upper chamber and a lower chamber by the flange part 94; a flow channel 96 is opened on the nozzle 3, which is connected to the lower chamber of the cavity 95; a flow channel 97 is opened on the laser emitter 1, which is connected to the flow channel 96 and the pipe 5.

[0020] It also includes a raised strip 201; eight raised strips 201 are welded to the lower side of the nozzle 3, and the nozzle 3 can be turned manually through the raised strips 201 to make it easier to apply force.

[0021] It also includes a second protrusion 202; six protrusions 202 are welded to the lower side of the hollow rod 4, and the hollow rod 4 can be turned manually through the protrusions 202, making it more convenient to apply force.

[0022] It also includes a pipe 203; a groove 98 is provided on the hollow rod 4, and the groove 98 is aligned with the flange 94; a pipe 203 is fixedly connected to the laser emitter 1, and the pipe 203 is made of metal; a flow channel 99 is provided on the nozzle 3, and the flow channel 99 is connected to the upper chamber of the cavity 95; a flow channel 910 is provided on the laser emitter 1, and the flow channel 910 is connected to the flow channel 99 and the pipe 203.

[0023] The laser emitter 1 is installed on the external driving mechanism, the two external air inlet pipes are communicated on the pipeline one 2 and the pipeline two 5 respectively, the external air outlet pipe is communicated to the pipeline three 203, then the hollow rod 4 is manually twisted to move, the hollow rod 4 moves downward, the conical part 92 is away from the inclined surface part 93, so that the annular channel is formed at the conical part 92 and the inclined surface part 93, the annular channel is communicated with the cavity 95, the preparation operation is completed; when cutting, the laser emitter 1 generates laser beam downward, the laser beam penetrates from the middle part of the inner side of the hollow rod 4 and shoots to the cutting position of the workpiece, at the same time, the external air inlet pipe transports oxygen to the pipeline one 2, the oxygen flows into the laser emitter 1 through the pipeline one 2, then flows into the hollow rod 4 from the laser emitter 1, and then is shot downward at high speed from the hollow rod 4 to the cutting position of the workpiece, so that the workpiece is cut by the cooperation of oxygen and laser beam, and the molten slag generated by cutting is blown downward by high-speed jetting oxygen, at the same time, the external air inlet pipe transports nitrogen to the pipeline two 5, the nitrogen flows into the flow channel two 97 through the pipeline two 5, then flows into the flow channel one 96 from the flow channel two 97, and then flows into the cavity 95 through the flow channel one 96, then flows from the cavity 95 to the annular channel, and then is shot downward from the annular channel, under the cooperation of the conical part 92 and the inclined surface part 93, the annular channel is flared, so that after the nitrogen is shot from the annular channel, the flared annular gas curtain is formed and located outside the cutting position, the impurities such as molten slag, steam and dust are blocked by the annular gas curtain, the molten slag is prevented from splashing and adhering to the lower end of the nozzle 3 and the lower end of the hollow rod 4, the height position error of the nozzle 3 and the hollow rod 4 measured by the height control system on the laser cutting machine is avoided, so that the height control error of the nozzle 3 and the hollow rod 4 is avoided, and the problem of impurities interfering with gas flow is also avoided, thereby avoiding interfering with the laser cutting operation, at the same time, the nitrogen is wrapped outside the oxygen to form a constraint gas flow, the oxygen for metal cutting is constrained to make the oxygen maintain laminar flow state for a longer time, the laminar flow energy is concentrated, the directivity is good, the molten metal can be penetrated more effectively, the molten slag is blown away, a smoother and more perpendicular cutting surface is obtained, after the molten slag blowing effect is improved, the molten slag spattering degree can be correspondingly reduced, which is beneficial to protect the focusing mirror; when the hollow rod 4 is manually twisted downward, Figure 3As shown, the greater the downward movement of the hollow rod 4, the greater the annular channel, so that the nitrogen flow can be adjusted to suit different cutting scenarios, and the universality is strong; when nitrogen is transported into the cavity 95 and the annular channel through the external exhaust pipe, the flowing nitrogen can take away the heat on the hollow rod 4, and cool the hollow rod 4, avoiding that the high temperature of the hollow rod 4 affects the laser cutting operation; when cutting thick plates, high-speed single-channel air cutting process should be used, and during cutting, high-pressure air is transported into the pipeline 2 through the external air inlet pipe, and the air is sprayed downward through the hollow rod 4, cooperating with the laser to cut the thick plate by air, in this process, the laser power will be greater than the above oxygen cutting operation, that is, the heat dissipation demand of the hollow rod 4 will be expanded, if the cavity 95 still transports nitrogen downward to cool the hollow rod 4, the temperature of the nitrogen needs to be appropriately reduced, and after the low-temperature nitrogen is sprayed to the cutting position of the thick plate, the metal melting efficiency will be reduced, thereby interfering with the laser operation, therefore, before the air cutting operation, the hollow rod 4 is manually screwed upward to make the tapered portion 92 of the hollow rod 4 contact with the inclined surface portion 93, so that a mechanical seal is formed between the tapered portion 92 and the inclined surface portion 93, and the lower part of the cavity 95 is blocked, like Figure 3As shown, the hollow rod 4 does not contact the flange part two 94 at the position corresponding to the groove 98, so that the upper and lower chambers of the cavity 95 are communicated through the groove 98, the external gas delivery pipe delivers cooling gas to the pipeline two 5, the cooling gas flows into the lower part of the cavity 95 through the pipeline two 5, the flow channel two 97 and the flow channel one 96, and then flows into the upper part of the cavity 95 through the groove 98, and then flows into the external exhaust pipe through the flow channel three 99, the flow channel four 910 and the pipeline three 203, so as to form a gas flow in the cavity 95 and cool the hollow rod 4. At this time, the cooling gas will not be sprayed to the cutting position to interfere with the laser cutting operation, and after blocking the lower part of the cavity 95, impurities in the cutting process will not splash and remain in the cavity 95; In use, the cavity 95 and the annular channel are formed between the nozzle 3 and the hollow rod 4, and the air flowing out of the cavity 95 and the annular channel will form an annular air curtain at the cutting position. The annular air curtain blocks the splashing of impurities such as slag, steam and dust, prevents the slag from splashing and adhering to the nozzle 3 and the lower end of the hollow rod 4, avoids interfering with the cutting operation, and at the same time, the annular air curtain is wrapped outside the oxygen to form a constrained airflow, improves the oxygen flow rate and focusing property, reduces slag splashing, and protects the focusing mirror. At the same time, when the nitrogen flows in the cavity 95 and the annular channel, it can take away the heat on the hollow rod 4 to cool it, avoid the influence of high temperature of the hollow rod 4 on the laser cutting operation, and at the same time, the hollow rod 4 is movably arranged, the height of the hollow rod 4 is adjusted to adjust the size of the annular channel, so that the strength of the annular air curtain can be adjusted to adapt to different cutting scenes, and the universality is strong. At the same time, after the hollow rod 4 is movably arranged, it can be switched to a single-channel air cutting mode to cut thick plates, and the flow channel in the cavity 95 is changed under the cooperation of the groove 98. At this time, the low-temperature air delivered into the cavity 95 cools the hollow rod 4 to meet the greater heat dissipation demand of air cutting, and after changing the flow channel, the low-temperature air will not be sprayed to the cutting position to interfere with the laser cutting operation.

[0024] It should be understood that: when oxygen cutting, the hollow rod 4 is adjusted downward, the outside of the hollow rod 4 contacts the flange part two 94, so that the cavity 95 is divided into upper and lower parts by the flange part two 94, the external gas delivery pipe delivers nitrogen to the pipeline two 5, and the nitrogen flows into the lower part of the cavity 95 through the pipeline two 5, the flow channel two 97 and the flow channel one 96, and then flows out of the annular channel.

[0025] In example 2, based on example 1, as Figure 5 and Figure 6The auxiliary assembly includes a connecting block 204, a spring 205 and a screw 206; two connecting blocks 204 are welded on the hollow rod 4, and the connecting block 204 is made of metal; one spring 205 is fixed on each connecting block 204, and the spring 205 is fixed with the conical part 92 and made of metal; the conical part 92 is slidingly arranged on the surface of the hollow rod 4; and the screw 206 is screwed on the hollow rod 4 and screwed with the conical part 92.

[0026] The laser emitter 1 is provided with a cooling liquid circulation system inside for cooling the laser emitter 1.

[0027] The laser emitter 1 is provided with a temperature sensor for monitoring the temperature of the laser emitter 1.

[0028] The laser emitter 1 is provided with an infrared sensor for detecting the position of the workpiece to be cut.

[0029] The nozzle 3 and the hollow rod 4 are made of wear-resistant material to reduce wear and improve service life.

[0030] The hollow rod 4 is made of high-temperature-resistant material to prolong the service life.

[0031] During the laser cutting process, even if nitrogen is delivered downward at the annular channel, some impurities with large kinetic energy will still overcome the resistance and splash and adhere to the lower end of the annular channel, thereby interfering with the sealing between the conical part 92 and the inclined part 93, causing the cooling gas to leak out from the lower part of the cavity 95, and interfering with the laser cutting operation. The annular channel is relatively narrow, and manual cleaning is difficult, so the conical part 92 is slidingly arranged on the hollow rod 4. During regular maintenance, the hollow rod 4 is manually twisted downward, so that the groove 98 is just away from the flange part two 94, thereby separating the cavity 95 into two parts by the flange part two 94. Then the screw 206 is unscrewed from the hollow rod 4 by using a wrench, so that the screw 206 no longer fixes the conical part 92 on the hollow rod 4, the spring 205 in the initial compressed state resets and drives the conical part 92 to move upward until the conical part 92 contacts the inclined part 93. At this time, the state of the hollow rod 4 is as follows: Figure 6The air is intermittently sent to the pipeline 2 through the external air delivery pipe, and the air flows into the lower part of the cavity 95 through the flow channel 1 96 and the flow channel 2 97, and then pushes the conical part 92 to move downward and compresses the spring 205. When the air delivery is stopped, the spring 205 is reset to drive the conical part 92 to move upward to the original position, so that the conical part 92 reciprocates up and down to strip the impurities remaining on the conical part 92 and the inclined part 93, and then the air in this part can blow the stripped impurities downward to achieve efficient cleaning. In use, the conical part 92 is slidably arranged on the hollow rod 4, and then the air intermittently flows and cooperates with the spring 205 to make the conical part 92 reciprocate up and down to strip and blow the impurities remaining on the conical part 92 and the inclined part 93, avoiding the problem of difficult cleaning.

[0032] While the present disclosure has been described with respect to a limited number of embodiments, those skilled in the art having the benefit of this disclosure will appreciate numerous other embodiments within the scope of the description. Accordingly, the scope of the application should be limited only by the appended claims.

Claims

1. A high magnetic induction low iron loss oriented silicon steel laser cutting device, comprising a laser emitter (1) and a pipeline I (2); the laser emitter (1) is communicated with the pipeline I (2); characterized in that, The laser emitter (1) is rotatably connected with the nozzle (3), the hollow rod (4) is rotatably connected with the nozzle (3), the second pipeline (5) is fixedly connected with the laser emitter (1), the flange part one (91) is arranged on the upper portion of the hollow rod (4), the flange part one (91) is rotatably connected with the nozzle (3), the tapered part (92) is arranged on the lower portion of the hollow rod (4), the inclined surface part (93) is arranged on the lower portion of the nozzle (3), the inclined surface part (93) is attached to the tapered part (92), the flange part two (94) is arranged in the nozzle (3), the cavity (95) is formed between the nozzle (3) and the hollow rod (4), the cavity (95) is divided into an upper chamber and a lower chamber by the flange part two (94), the flow channel one (96) is arranged on the nozzle (3), the flow channel one (96) is communicated with the lower chamber of the cavity (95), the flow channel two (97) is arranged on the laser emitter (1), the flow channel two (97) is communicated with the flow channel one (96), and the flow channel two (97) is communicated with the second pipeline (5).

2. A high-magnetic-induction low-loss oriented silicon steel laser cutting apparatus according to claim 1, characterized by, The convex strip one (201) is further arranged.

3. A high-magnetic-induction low-loss oriented silicon steel laser cutting apparatus according to claim 1, characterized in that, The convex strip two (202) is further arranged.

4. The high-magnetic-induction low-loss oriented silicon steel laser cutting apparatus according to claim 1, wherein The third pipeline (203) is further arranged, the recess (98) is arranged on the hollow rod (4), the recess (98) is aligned with the flange part two (94), the third pipeline (203) is fixedly connected with the laser emitter (1), the flow channel three (99) is arranged on the nozzle (3), the flow channel three (99) is communicated with the upper chamber of the cavity (95), the flow channel four (910) is arranged on the laser emitter (1), the flow channel four (910) is communicated with the flow channel three (99), and the flow channel four (910) is communicated with the third pipeline (203).

5. A high-magnetic-induction low-loss oriented silicon steel laser cutting apparatus according to claim 4, wherein The auxiliary assembly is further arranged, the auxiliary assembly comprises the connecting block (204), the spring (205) and the screw (206), the connecting block (204) is fixedly connected with the hollow rod (4), the spring (205) is fixedly connected with each connecting block (204), the spring (205) is fixedly connected with the tapered part (92), the tapered part (92) is slidably arranged on the surface of the hollow rod (4), the screw (206) is rotatably connected with the hollow rod (4), and the screw (206) is rotatably connected with the tapered part (92).

6. A high-magnetic-induction low-loss oriented silicon steel laser cutting apparatus according to any one of claims 1 to 5, characterized by, The cooling liquid circulation system is arranged on the inner side of the laser emitter (1).

7. A high-magnetic-induction low-loss oriented silicon steel laser cutting apparatus according to claim 6, wherein The temperature sensor is arranged on the laser emitter (1).

8. A high-magnetic-induction low-loss oriented silicon steel laser cutting apparatus according to claim 7, wherein The infrared sensor is arranged on the laser emitter (1).

9. A high-magnetic-induction low-loss oriented silicon steel laser cutting apparatus according to claim 8, wherein The nozzle (3) and the hollow rod (4) are made of wear-resistant materials.

10. A high-magnetic-induction low-loss oriented silicon steel laser cutting apparatus according to claim 9, wherein The hollow rod (4) is made of high-temperature-resistant materials.

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