A laser cutting device for hardware production

Abstract

The application relates to the technical field of laser cutting of hardware fittings, and discloses a laser cutting device for hardware fitting production, which comprises a supporting base assembly, the supporting base assembly comprises a cutting supporting platform, a supporting conveying unit and a lower hopper, a metal pipe is horizontally supported at the middle part of the top of the cutting supporting platform, and a driving rotating assembly and a cutting positioning assembly are arranged at the back end of the top of the cutting supporting platform; the laser cutting device for hardware fitting production is characterized in that, through the synergistic effect of the embedded heat dissipation roller unit and the external heat dissipation roller unit, the processing quality of the copper / aluminum alloy pipe material is remarkably optimized, the cooling liquid forms an eddy current through the annular groove and the through hole of the inner heat dissipation roller, the inner and outer walls of the pipe material are synchronously and directionally sprayed, the temperature of the cutting area is rapidly reduced, the width of the heat affected zone is reduced, the displacement rod structure driven by the cam makes the heat dissipation roller self-adapt to different pipe diameters, and the radial vibration of the pipe material is effectively inhibited, and the problems of thermal deformation of the high-thermal-conductivity material and precision control are completely solved.

Description

Technical Field

[0001] This invention relates to the field of laser cutting technology for hardware accessories, and more specifically, to a laser cutting device for the production of hardware accessories. Background Technology

[0002] In the field of hardware manufacturing, copper and aluminum alloy tubing are widely used in electronic devices, automotive piping, and other applications due to their excellent electrical conductivity and lightweight properties. However, these materials face a significant technical bottleneck in laser cutting: thermal deformation caused by their high thermal conductivity. In traditional laser cutting processes, high-energy beams (10... 6 -10 7 W / cm 2 When applied to the surface of the pipe, the thermal conductivity of copper / aluminum alloys (copper 401 W / (m·K), aluminum 237 W / (m·K)) causes heat to rapidly diffuse outward from the cutting area, leading to the following problems:

[0003] Thermal stress deformation occurs when the temperature difference between the cut and non-cut areas exceeds 200℃, resulting in uneven thermal stress inside the material. This leads to an increase in the ellipticity error of the tube (>0.5mm / m), especially in the processing of thin-walled tubes (wall thickness <2mm), where the deformation rate can reach 15%-30%. Insufficient support causes vibration. Existing equipment uses external clamping rollers for positioning, and the inner cavity of the tube lacks rigid support. High-frequency vibration (20-200Hz) during laser cutting causes waviness of the cut (Ra>6.3μm).

[0004] Therefore, there is an urgent need to develop a laser cutting device that combines dynamic internal cavity support with coordinated internal and external heat dissipation in order to break through the technical barriers of precision machining of high thermal conductivity materials. Summary of the Invention

[0005] To overcome the above-mentioned technical problems, the present invention proposes a laser cutting device for the production of hardware accessories.

[0006] The present invention achieves the above objectives through the following technical solutions:

[0007] A laser cutting device for producing hardware accessories includes a support base assembly. The support base assembly includes a cutting support platform, a support conveying unit, and a feeding hopper. A metal tube is horizontally supported at the middle of the top of the cutting support platform. A drive rotation assembly and a cutting positioning assembly are respectively provided at one end of the back of the top of the cutting support platform. The drive rotation assembly is located near the middle of the metal tube and is horizontally slidably connected to the top of the cutting support platform. The cutting positioning assembly is located near the end of the metal tube.

[0008] The cutting support platform is symmetrically provided with side support components at the top near the end of the metal tube. An embedded heat dissipation support mechanism is provided inside the side support components. The embedded heat dissipation support mechanism includes a nested support column. One end of the nested support column extends to the inside of the metal tube and supports and dissipates heat to the inside of the metal tube. The other end of the embedded heat dissipation support mechanism is hinged to a horizontal telescopic displacement component. The horizontal telescopic displacement component drives the embedded heat dissipation support mechanism to move horizontally at the top of the cutting support platform.

[0009] As a further optimization of the present invention, the embedded heat dissipation support mechanism further includes two sets of support blocks that are fastened to the horizontal telescopic displacement component. Each of the nested support columns is provided with a support shaft that penetrates the support block near the position of the two sets of support blocks. A bearing seat is provided between the outer side of the support shaft and the support block. A gear is provided at the ends of the two sets of support shafts that are far apart from each other.

[0010] As a further optimization of the present invention, the side support assembly includes a side support plate, a linear slide rail, an inner support plate, and a rack. There are two sets of side support plates, which are symmetrically installed on the top of the cutting support platform. A linear slide rail is symmetrically arranged on the side of the two sets of side support plates that are close to each other. The linear slide rail is located at the end of the metal tube and at the bottom of the support shaft. A planar groove that fits into the top of the linear slide rail is provided at the bottom of the support shaft. An inner support plate is symmetrically arranged on the side of the two sets of side support plates that are close to each other. A rack is provided at the bottom of each inner support plate. The inner support plate is located above the linear slide rail, and the input end of the inner support plate is connected to the output end of the linear slide rail. The gear and the rack mesh with each other.

[0011] As a further optimization of the present invention, a drive shaft is provided through the middle of both ends of the nested support column. A second drive motor is provided at one end of the nested support column near the horizontal telescopic displacement component. A synchronous transmission unit is provided at the output end of the second drive motor and at one end of the corresponding drive shaft. A cam unit is provided at the other end of the drive shaft. Several sets of displacement rods that slide on the surface of the nested support column are evenly provided on the outer side of the end near the cam unit. A U-shaped connecting rod is provided at the end of each displacement rod away from the center of the nested support column. An inner heat dissipation roller unit is provided on both sides of the U-shaped connecting rod.

[0012] As a further optimization of the present invention, a limiting protrusion is provided on one side of the displacement rod that fits against the nested support column, and a limiting groove that matches the limiting protrusion is provided on the outer side of the nested support column. The limiting protrusion slides linearly within the limiting groove. A spring is provided at one end of the displacement rod near the center of the nested support column that is fastened to the edge of the end face of the nested support column. The end face of the displacement rod near the center of the nested support column fits against the outer side of the cam unit.

[0013] As a further optimization of the present invention, the inner heat dissipation roller unit includes a heat dissipation support roller rotatably connected to a U-shaped connecting rod. Each side of the U-shaped connecting rod that is far apart from each other is provided with a support sleeve. The outer side of the support sleeve is rotatably and sealingly connected to the heat dissipation support roller. The inner side of the heat dissipation support roller is provided with a first inner cavity. The inner side of the support sleeve is provided with a second inner cavity. A connecting hole connects the first inner cavity and the second inner cavity.

[0014] As a further optimization of the present invention, the outer side of the heat dissipation support roller is uniformly provided with an inner ring groove, the inner side of the inner ring groove is uniformly provided with a first through hole communicating with the first inner cavity, the input ends of the two sets of support sleeves are connected to a conveying branch pipe, and the input ends of the conveying branch pipe are connected to a second conveying pipe.

[0015] As a further optimization of the present invention, the drive rotation assembly includes a first support truss, a first drive motor, a first telescopic cylinder, and a roller. The first support truss is horizontally and laterally slidably connected to the top of the cutting support platform. The top of the first support truss is provided with a first telescopic cylinder. The bottom end of the first telescopic cylinder is provided with a roller that fits against the outside of the metal tube. The outside of the first telescopic cylinder is provided with a first drive motor that is rotatably connected to the roller.

[0016] As a further optimization of the present invention, the cutting and positioning assembly includes a second support truss, a second telescopic cylinder is provided at the top of the second support truss, a mounting frame is provided at the output end of the second telescopic cylinder, an outer heat dissipation roller unit is provided directly below the bottom of the mounting frame, the outer heat dissipation roller unit has the same structure and function as the inner heat dissipation roller unit, a laser cutting assembly is provided at the middle position of the outer heat dissipation roller unit, an auxiliary roller assembly is provided at one end of the bottom of the mounting frame that is in contact with the outside of the metal tube, the auxiliary roller assembly has the same structure and function as the roller, and a first conveying pipe is connected to the input end of the outer heat dissipation roller unit.

[0017] As a further optimization of the present invention, the support conveying unit is evenly distributed on both sides of the top of the cutting support platform and supports the bottom of the metal tube. The hopper is located at the bottom of the cutting support platform and is connected to the top of the cutting support platform. The hopper is located directly below the inner side of the two sets of side support components.

[0018] The beneficial effects of this invention are as follows: Through the synergistic effect of the embedded heat dissipation roller unit and the external heat dissipation roller unit, this invention significantly optimizes the processing quality of copper / aluminum alloy tubes. The coolant forms a vortex through the annular groove and through hole of the inner heat dissipation roller, realizing synchronous directional spraying on the inner and outer walls of the tube, rapidly reducing the temperature of the cutting zone and reducing the width of the heat-affected zone. The cam-driven displacement rod structure enables the heat dissipation roller to adapt to different tube diameters and effectively suppresses radial vibration of the tube, thus completely solving the problem of thermal deformation and precision control of high thermal conductivity materials. Attached Figure Description

[0019] Figure 1 This is a front view schematic diagram of the cutting state structure of the present invention;

[0020] Figure 2 This is a top view of the cutting state structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure and function of the present invention;

[0022] Figure 4 This is an enlarged schematic diagram of the structure at the cutting and positioning component in this invention;

[0023] Figure 5 This is an enlarged schematic diagram of the connection structure at the embedded heat dissipation support mechanism, side support component, and horizontal telescopic displacement component in this invention;

[0024] Figure 6 yes Figure 5 Enlarged schematic diagram of the structure at point A;

[0025] Figure 7 This is an enlarged schematic diagram of the structure at the nested support column in this invention;

[0026] Figure 8 This is an enlarged schematic diagram of the connection structure between the embedded heat dissipation support mechanism and the side support component in this invention;

[0027] Figure 9 This is an enlarged schematic diagram of the structure at the side support component in this invention;

[0028] Figure 10 This is an enlarged schematic diagram of the structure of the inner heat dissipation roller unit in this invention;

[0029] Figure 11 This is an enlarged cross-sectional view of the structure at the inner heat dissipation roller unit in this invention;

[0030] Figure 12 yes Figure 11 Enlarged schematic diagram of the structure at point B.

[0031] In the picture:

[0032] 100. Support base assembly; 200. Metal tube; 300. Drive rotation assembly; 400. Cutting and positioning assembly; 500. Embedded heat dissipation support mechanism; 600. Side support assembly; 700. Horizontal telescopic displacement assembly;

[0033] 101. Cutting support platform; 102. Support conveying unit; 103. Feed hopper;

[0034] 301. First support truss; 302. First drive motor; 303. First telescopic cylinder; 304. Roller;

[0035] 401. Second support truss; 402. External heat dissipation roller unit; 403. First conveying pipe; 404. Second telescopic cylinder; 405. Laser cutting assembly; 406. Auxiliary roller assembly; 407. Mounting frame;

[0036] 501. Nested support column; 502. Drive shaft; 503. Inner heat dissipation roller unit; 504. Cam unit; 505. Second conveying pipe; 506. Support block; 507. Displacement rod; 508. Spring; 509. Limiting groove; 510. Support shaft; 511. Conveying branch pipe; 512. U-shaped connecting rod; 513. Second drive motor; 514. Synchronous transmission unit; 515. Gear; 516. Limiting protrusion;

[0037] 5031, Heat dissipation support roller; 5032, Inner ring groove; 5033, First through hole; 5034, First inner cavity; 5035, Second inner cavity; 5036, Support sleeve; 5037, Connecting hole;

[0038] 601. Side support plate; 602. Linear slide rail; 603. Inner support plate; 604. Rack and pinion. Detailed Implementation

[0039] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0040] Example 1

[0041] like Figures 1 to 3As shown, a laser cutting device for hardware accessories production includes a support base assembly 100. The support base assembly 100 includes a cutting support platform 101, a support conveying unit 102, and a feeding hopper 103. A metal tube 200 is horizontally supported at the middle of the top of the cutting support platform 101. A drive rotation assembly 300 and a cutting positioning assembly 400 are respectively provided at one end of the back of the top of the cutting support platform 101. The drive rotation assembly 300 is located near the middle of the metal tube 200 and is horizontally slidably connected to the top of the cutting support platform 101. The cutting positioning assembly 400 is located near the end of the metal tube 200.

[0042] A side support assembly 600 is symmetrically arranged at the top of the cutting support platform 101 near the end of the metal tube 200. An embedded heat dissipation support mechanism 500 is arranged inside the side support assembly 600. The embedded heat dissipation support mechanism 500 includes a nested support column 501. One end of the nested support column 501 extends to the inside of the metal tube 200 and supports and dissipates heat to the inside of the metal tube 200. The other end of the embedded heat dissipation support mechanism 500 is hinged to a horizontal telescopic displacement assembly 700. The horizontal telescopic displacement assembly 700 drives the embedded heat dissipation support mechanism 500 to move horizontally at the top of the cutting support platform 101.

[0043] like Figures 5 to 9 As shown, the embedded heat dissipation support mechanism 500 also includes two sets of support blocks 506 that are fastened to the horizontal telescopic displacement component 700. Each nested support column 501 has a support shaft 510 penetrating the support block 506 near the position of the two sets of support blocks 506. A bearing seat is provided between the outer side of the support shaft 510 and the support block 506. Gears 515 are provided at the ends of the two sets of support shafts 510 that are far apart from each other. The side support component 600 includes a side support plate 601, a linear slide rail 602, an inner support plate 603, and a rack 604. There are two sets of side support plates 601, symmetrically installed on the top of the cutting support platform 101. Linear slide rails 602 are symmetrically arranged on the side of the support plates 601 that are close to each other. The linear slide rails 602 are close to one end of the metal tube 200 and are located at the bottom of the support shaft 510. The bottom of the support shaft 510 is provided with a flat groove that fits into the top of the linear slide rail 602. Inner support plates 603 are symmetrically arranged on the side of the two sets of side support plates 601 that are close to each other. The bottom of the inner support plates 603 is provided with racks 604. The inner support plates 603 are located above the linear slide rails 602, and the input end of the inner support plates 603 is connected to the output end of the linear slide rails 602. The gears 515 and racks 604 mesh with each other.

[0044] like Figures 5 to 12As shown, a drive shaft 502 is installed through the middle of both ends of the nested support column 501. A second drive motor 513 is installed at one end of the nested support column 501 near the horizontal telescopic displacement component 700. A synchronous transmission unit 514 is installed at the output end of the second drive motor 513 and at one end of the corresponding drive shaft 502. A cam unit 504 is installed at the other end of the drive shaft 502. Several sets of displacement rods 507 are evenly arranged on the outer side of the nested support column 501 near the cam unit 504. Each displacement rod 507 has a U-shaped connecting rod 512 at the end away from the center of the nested support column 501. An inner heat dissipation roller unit 503 is installed on both sides of the U-shaped connecting rod 512. A limiting protrusion 516 is provided on the side of the displacement rod 507 that is in contact with the nested support column 501. A limiting device that matches the limiting protrusion 516 is provided on the outer side of the nested support column 501. The sliding groove 509 and the limiting protrusion 516 slide linearly within the limiting sliding groove 509. The displacement rod 507 is provided with a spring 508 at one end near the center of the nested support column 501, which is fastened to the edge of the end face of the nested support column 501. The end face of the displacement rod 507 near the center of the nested support column 501 is in contact with the outer side of the cam unit 504. The inner heat dissipation roller unit 503 includes a heat dissipation support roller 5031 rotatably connected to the U-shaped connecting rod 512. The side of the U-shaped connecting rod 512 that is far apart from each other is provided with a support sleeve 5036. The outer side of the support sleeve 5036 is rotatably and sealingly connected to the heat dissipation support roller 5031. The inner side of the heat dissipation support roller 5031 is provided with a first inner cavity 5034. The inner side of the support sleeve 5036 is provided with a second inner cavity 5035. A connecting hole 5037 is connected between the first inner cavity 5034 and the second inner cavity 5035.

[0045] The outer side of the heat dissipation support roller 5031 is uniformly provided with an inner ring groove 5032, and the inner side of the inner ring groove 5032 is uniformly provided with a first through hole 5033 that communicates with the first inner cavity 5034. The input ends of the two sets of support sleeves 5036 are connected to a conveying branch pipe 511, and the input ends of the conveying branch pipe 511 are connected to a second conveying pipe 505. The drive rotation assembly 300 includes a first support truss 301, a first drive motor 302, a first telescopic cylinder 303, and a roller 304. The first support truss 301 is horizontally and laterally slidably connected to the top of the cutting support platform 101. The top of the first support truss 301 is provided with a first telescopic cylinder 303, and the bottom end of the first telescopic cylinder 303 is provided with a roller 304 that is in contact with the outer side of the metal tube 200. The outer side of the first telescopic cylinder 303 is provided with a first drive motor 302 that is rotatably connected to the roller 304.

[0046] like Figures 1 to 4As shown, the cutting and positioning assembly 400 includes a second support truss 401. A second telescopic cylinder 404 is provided at the top of the second support truss 401. A mounting frame 407 is provided at the output end of the second telescopic cylinder 404. An outer heat dissipation roller unit 402 is provided directly below the bottom of the mounting frame 407. The outer heat dissipation roller unit 402 has the same structure and function as the inner heat dissipation roller unit 503. A laser cutting assembly 405 is provided at the middle position of the outer heat dissipation roller unit 402. An auxiliary roller assembly 406 is provided at one end of the bottom of the mounting frame 407, which is in contact with the outside of the metal tube 200. The auxiliary roller assembly 406 has the same structure and function as the roller 304. The input end of the outer heat dissipation roller unit 402 is connected to a first conveying pipe 403.

[0047] The support conveying unit 102 is evenly distributed on both sides of the top of the cutting support platform 101 and supports the bottom of the metal tube 200. The hopper 103 is located at the bottom of the cutting support platform 101 and is connected to the top of the cutting support platform 101. The hopper 103 is located directly below the inner side of the two sets of side support components 600.

[0048] The process of using the laser cutting device for hardware parts production proposed in this embodiment is as follows: When the device is in use, the metal tube 200 that needs to be laser cut is placed on the top of the support conveying unit 102, and then the position of the first support truss 301 is adjusted to drive the roller 304 to follow the displacement as a whole. The first telescopic cylinder 303 is activated to drive the roller 304 to move downward and fit against the outside of the metal tube 200, so as to achieve the initial positioning of the metal tube 200.

[0049] Furthermore, by activating the horizontal telescopic displacement component 700, the nested support column 501 is driven to extend into the inner side of the metal tube 200, causing the inner heat dissipation roller unit 503 at one end of the nested support column 501 to move synchronously. At this time, the support shaft 510 moves synchronously and slides on the top of the linear slide rail 602 through the planar groove at the bottom of the support shaft 510, so that the nested support column 501 will not rotate due to gravity.

[0050] When the nested support column 501 reaches the predetermined position, the second drive motor 513 is started to drive the synchronous transmission unit 514 to the position of the transmission shaft 502, thereby driving the transmission shaft 502 to rotate. The rotation of the transmission shaft 502 drives the cam unit 504 to rotate as well. The outer side of the cam unit 504 pushes and squeezes one end of the displacement rod 507, causing the displacement rod 507 to move to the outer side of the nested support column 501. At this time, the displacement rod 507 is limited by the limiting protrusion 516 and the limiting slide groove 509, thereby maintaining linear displacement. The displacement of the displacement rod 507 stretches the spring 508.

[0051] The displacement of the displacement rod 507 pushes the inner heat dissipation roller units 503 at both ends of the U-shaped connecting rod 512 to follow the displacement and adhere to the inner side of the metal tube 200. When the outer side of the inner heat dissipation roller unit 503 adheres to the inner side of the metal tube 200, the second drive motor 513 is turned off to position the inner heat dissipation roller unit 503. Then, the inner support structure is formed on the inner side of the metal tube 200 by the support of several sets of inner heat dissipation roller units 503.

[0052] Furthermore, the second telescopic cylinder 404 is activated to drive the mounting bracket 407 to move downward, thereby causing the outer heat dissipation roller unit 402 at the bottom of the mounting bracket 407 to come into contact with the outer side of the metal tube 200. At the same time, the auxiliary roller assembly 406 comes into contact with the outer side of the metal tube 200. The laser cutting assembly 405 is controlled by the external central control unit to cut the metal tube 200.

[0053] While the laser cutting assembly 405 is started, coolant is simultaneously delivered to the interior of the outer heat dissipation roller unit 402 through the first delivery pipe 403, and coolant is delivered to the interior of the inner heat dissipation roller unit 503 through the second delivery pipe 505 and the delivery branch pipe 511.

[0054] The first drive motor 302 is started, which drives the multi-functional roller 304 to rotate, and then the metal tube 200 is driven to rotate by the rotational friction of the roller 304.

[0055] Further analysis of the specific structure of the inner heat dissipation roller unit 503 reveals that after the coolant is delivered to the inside of the support sleeve 5036 through the delivery branch pipe 511, it enters the inside of the second inner cavity 5035, is delivered to the position of the first inner cavity 5034 through the connecting hole 5037, and then sprays out through the first through hole 5033 to exchange and absorb heat on the inside of the metal tube 200, thereby cooling the cut part of the metal tube 200.

[0056] Similarly, the coolant is sprayed out through the position of the external heat dissipation roller unit 402 to cool the outside of the metal tube 200, thereby achieving the function of heat exchange and absorption.

[0057] During the cutting process of the metal tube 200 by the laser cutting component 405, the high temperature generated is absorbed by the coolant. However, during the cutting process, due to the high thermal conductivity of the copper / aluminum alloy material, the cutting part is prone to heat and deformation. Through the structural design of the outer heat dissipation roller unit 402 and the inner heat dissipation roller unit 503 rolling and clamping, the function of heat absorption and rolling shaping is realized, maintaining the structural stability of the metal tube 200 cutting part.

[0058] As the metal tube 200 rotates, the laser cutting component 405 is able to complete the annular cutting function of the metal tube 200. After the metal tube 200 is cut, the laser cutting component 405 is turned off, and the horizontal telescopic displacement component 700 is activated to drive the nested support column 501 to move horizontally in the opposite direction.

[0059] At this time, gear 515 follows the displacement. When the support shaft 510 drives gear 515 to the end of linear slide rail 602, gear 515 and rack 604 mesh with each other. As the nested support column 501 continues to move, the meshing rotation of gear 515 and rack 604 causes the end of the nested support column 501 near the metal tube 200 to deflect downwards. This allows the cut metal tube 200 supported on the outside of the inner heat dissipation roller unit 503 to move to the top position of the hopper 103. Then, the second drive motor 513 is started in the reverse direction to drive the cam unit 504 to rotate in the reverse direction. Under the action of the spring 508, several sets of inner heat dissipation roller units 503 are reset, and the cut metal tube 200 slides out along the channel of the hopper 103, thus completing one laser cutting function of the metal tube 200.

[0060] The specific implementation methods of the embodiments of the present invention have been described above. However, the embodiments of the present invention are not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the embodiments of the present invention, all of which are within the protection scope of the embodiments of the present invention.

Claims

1. A laser cutting device for hardware production, characterized in that, Including support base assembly (100), support base assembly (100) includes cutting support platform (101), support conveying unit (102) and lower hopper (103), the middle part of the top of cutting support platform (101) is supported with metal pipe (200), the back end of the top of cutting support platform (101) is provided with drive rotation assembly (300) and cutting positioning assembly (400) respectively, drive rotation assembly (300) is close to the middle part position of metal pipe (200), and drive rotation assembly (300) is connected with the top of cutting support platform (101) horizontally sliding, cutting positioning assembly (400) is close to the position of the end of metal pipe (200); The top of cutting support platform (101) is symmetrically provided with side support assembly (600) close to the position of the end of metal pipe (200), the inside of side support assembly (600) is provided with embedded heat dissipation support mechanism (500), embedded heat dissipation support mechanism (500) includes nested support column (501), one end of nested support column (501) extends to the inside of metal pipe (200) and supports and dissipates heat to the inside of metal pipe (200), the other end of embedded heat dissipation support mechanism (500) is hinged with horizontal telescopic displacement assembly (700), horizontal telescopic displacement assembly (700) drives embedded heat dissipation support mechanism (500) to displace on the top of cutting support platform (101) horizontally; Embedded heat dissipation support mechanism (500) further includes two groups of support blocks (506) tightly connected with horizontal telescopic displacement assembly (700), nested support column (501) is provided with support shaft (510) penetrating support block (506) at the position close to two groups of support blocks (506), bearing seat is arranged between the outside of support shaft (510) and support block (506), and the end of two groups of support shafts (510) away from each other is provided with gear (515); Side support assembly (600) includes side support plate (601), linear slide rail (602), inner support plate (603) and rack (604), side support plate (601) is two groups, and symmetrically installed on the top of cutting support platform (101), two groups of side support plates (601) are symmetrically provided with linear slide rail (602) on the side close to each other, one end of linear slide rail (602) is close to metal pipe (200), and linear slide rail (602) is located at the bottom of support shaft (510), the bottom of support shaft (510) is provided with plane groove embedded in the top of linear slide rail (602), two groups of side support plates (601) are symmetrically provided with inner support plate (603) on the side close to each other, and the bottom of inner support plate (603) is provided with rack (604), inner support plate (603) is located above linear slide rail (602), and the input end of inner support plate (603) corresponds with the output end of linear slide rail (602) and is connected, gear (515) and rack (604) are engaged with each other. A drive shaft (502) is provided through the middle of both ends of the nested support column (501). A second drive motor (513) is provided at one end of the nested support column (501) near the horizontal telescopic displacement component (700). A synchronous transmission unit (514) is provided at the output end of the second drive motor (513) and at one end of the corresponding drive shaft (502). A cam unit (504) is provided at the other end of the drive shaft (502). Several sets of displacement rods (507) that slide on the surface of the nested support column (501) are evenly provided on the outer side of the end of the nested support column (501) near the cam unit (504). A U-shaped connecting rod (512) is provided at the end of each displacement rod (507) away from the center of the nested support column (501). An inner heat dissipation roller unit (503) is provided on both sides of the U-shaped connecting rod (512). The displacement rod (507) is provided with a limiting protrusion (516) on one side of the nested support column (501). The outer side of the nested support column (501) is provided with a limiting groove (509) that is compatible with the limiting protrusion (516). The limiting protrusion (516) slides linearly within the limiting groove (509). The end of the displacement rod (507) near the center of the nested support column (501) is provided with a spring (508) that is fastened to the edge of the end face of the nested support column (501). The end face of the displacement rod (507) near the center of the nested support column (501) is in contact with the outer side of the cam unit (504). The inner heat dissipation roller unit (503) includes a heat dissipation support roller (5031) rotatably connected to a U-shaped connecting rod (512). Each side of the U-shaped connecting rod (512) away from each other is provided with a support sleeve (5036). The outer side of the support sleeve (5036) is rotatably and sealingly connected to the heat dissipation support roller (5031). The inner side of the heat dissipation support roller (5031) is provided with a first inner cavity (5034). The inner side of the support sleeve (5036) is provided with a second inner cavity (5035). A connecting hole (5037) connects the first inner cavity (5034) and the second inner cavity (5035). The outer side of the heat dissipation support roller (5031) is uniformly provided with an inner ring groove (5032), and the inner side of the inner ring groove (5032) is uniformly provided with a first through hole (5033) that communicates with the first inner cavity (5034). The input ends of the two sets of support sleeves (5036) are connected to a conveying branch pipe (511), and the input ends of the conveying branch pipe (511) are connected to a second conveying pipe (505).

2. The laser cutting device for producing hardware according to claim 1, wherein The drive rotation assembly (300) includes a first support truss (301), a first drive motor (302), a first telescopic cylinder (303), and a roller (304). The first support truss (301) is horizontally and laterally slidably connected to the top of the cutting support platform (101). The first telescopic cylinder (303) is provided at the top of the first support truss (301). The roller (304) is provided at the bottom end of the first telescopic cylinder (303) and is in contact with the outside of the metal tube (200). The first drive motor (302) is rotatably connected to the roller (304) on the outside of the first telescopic cylinder (303).

3. The laser cutting device for producing hardware according to claim 1, wherein The cutting and positioning assembly (400) includes a second support truss (401), a second telescopic cylinder (404) is provided at the top of the second support truss (401), a mounting frame (407) is provided at the output end of the second telescopic cylinder (404), an outer heat dissipation roller unit (402) is provided directly below the bottom of the mounting frame (407), the outer heat dissipation roller unit (402) has the same structure and function as the inner heat dissipation roller unit (503), a laser cutting assembly (405) is provided at the middle position of the outer heat dissipation roller unit (402), an auxiliary roller assembly (406) is provided at one end of the bottom of the mounting frame (407) and is in contact with the outside of the metal tube (200), the auxiliary roller assembly (406) has the same structure and function as the roller (304), and the input end of the outer heat dissipation roller unit (402) is connected to a first conveying pipe (403).

4. The laser cutting device for producing hardware according to claim 1, wherein The support conveying unit (102) is evenly distributed on both sides of the top of the cutting support platform (101) and supports the bottom of the metal tube (200). The hopper (103) is located at the bottom of the cutting support platform (101) and is connected to the top of the cutting support platform (101). The hopper (103) is located directly below the inner side of the two sets of side support components (600).

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