Laser cutting device for hardware fitting production

Abstract

The invention relates to the technical field of hardware fitting laser cutting, and discloses a hardware fitting production laser cutting device which comprises a supporting base assembly, the supporting base assembly comprises a cutting supporting platform, a supporting conveying unit and a discharging hopper, and a metal pipe is horizontally supported in the middle of the top of the cutting supporting platform; a driving rotating assembly and a cutting positioning assembly are arranged at one end of the back face of the top of the cutting supporting platform. According to the laser cutting device for hardware fitting production, through the synergistic effect of the embedded heat dissipation roller unit and the outer heat dissipation roller unit, the machining quality of a copper / aluminum alloy pipe is remarkably optimized, cooling liquid forms vortex through an annular groove of an inner heat dissipation roller and a through hole, synchronous directional spraying of the inner wall and the outer wall of the pipe is achieved, the temperature of a cutting area is rapidly reduced, and the cutting efficiency is improved. The width of a heat affected zone is reduced, the displacement rod structure driven by the cam enables the heat dissipation roller to adapt to different pipe diameters, radial vibration of the pipe is effectively restrained, and the problems of thermal deformation and precision control of high-heat-conduction materials are thoroughly solved.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cutting of hardware fittings, and more specifically, it relates to a laser cutting device for the production of hardware fittings. Background Art

[0002] In the field of hardware fitting manufacturing, copper and aluminum alloy pipes are widely used in scenarios such as electronic devices and automotive pipelines due to their excellent electrical conductivity and lightweight characteristics. However, such materials face significant technical bottlenecks during laser cutting: the problem of thermal deformation caused by high thermal conductivity. In traditional laser cutting processes, when a high-energy beam (10 6 -10 7 W / cm 2 ) acts on the surface of the pipe, the thermal conductivity of copper / aluminum alloy (copper 401 W / (m·K), aluminum 237 W / (m·K)) causes heat to rapidly diffuse outside the cutting area, resulting in the following problems:

[0003] Thermal stress deformation. When the temperature difference between the cutting area and the non-cutting area exceeds 200°C, non-uniform thermal stress is generated inside the material, leading to an increase in the ovality error of the pipe (>0.5 mm / m). Especially in the processing of thin-walled pipes (wall thickness < 2 mm), the deformation rate can reach 15%-30%. Vibration caused by insufficient support. Existing equipment uses external clamping roller positioning, and the inner cavity of the pipe lacks rigid support. High-frequency vibration (20-200 Hz) during laser cutting results in a cut surface waviness (Ra > 6.3 μm).

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

[0005] In order to overcome the above technical problems, the present invention proposes a laser cutting device for the production of hardware fittings.

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

[0007] A laser cutting device for the production of hardware fittings, including a support base assembly. The support base assembly includes a cutting support platform, a support and conveying unit, and a discharge hopper. A metal pipe is horizontally supported in the middle of the top of the cutting support platform. At one end of the back of the top of the cutting support platform, a driving rotation assembly and a cutting positioning assembly are respectively arranged. The driving rotation assembly is close to the middle position of the metal pipe and is horizontally slidably connected to the top of the cutting support platform. The cutting positioning assembly is close to the end of the metal pipe;

[0008] Symmetric side support components are provided at positions on the top of the cutting support platform close to the end of the metal pipe. An embedded heat dissipation support mechanism is arranged 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 pipe to support and dissipate heat from the inside of the metal pipe. The other end of the embedded heat dissipation support mechanism is hinged with a horizontal telescopic displacement component, and the horizontal telescopic displacement component drives the embedded heat dissipation support mechanism to horizontally displace on the top of the cutting support platform.

[0009] As a further optimized solution of the present invention, the embedded heat dissipation support mechanism further includes two support blocks firmly connected to the horizontal telescopic displacement component. Support shafts penetrating the support blocks are arranged at positions of the nested support column close to the two support blocks. A bearing seat is arranged between the outer side of the support shaft and the support block. Gears are arranged at one ends of the two support shafts away from each other.

[0010] As a further optimized solution of the present invention, the side support component includes side support plates, linear slide rails, inner support plates and racks. There are two side support plates, which are symmetrically installed on the top of the cutting support platform. Linear slide rails are symmetrically arranged on one side of the two side support plates close to each other. One end of the linear slide rail close to the metal pipe, and the linear slide rail is located at the bottom of the support shaft. A flat groove fitted to the top of the linear slide rail is arranged at the bottom of the support shaft. Inner support plates are symmetrically arranged on one side of the two side support plates close to each other. Racks are arranged at the bottoms of the inner support plates. The inner support plates are located above the linear slide rails, and the input ends of the inner support plates are correspondingly connected to the output ends of the linear slide rails. The gears and the racks are meshed with each other.

[0011] As a further optimized solution of the present invention, a transmission shaft penetrates through the middle parts of both ends of the nested support column. A second driving motor is arranged at one end of the nested support column close to the horizontal telescopic displacement component. A synchronous transmission unit is arranged between the output end of the second driving motor and one end of the corresponding transmission shaft. A cam unit is arranged at the other end of the transmission shaft. A plurality of displacement rods sliding on its surface are uniformly arranged on the outer side of the nested support column close to the cam unit. U-shaped connecting rods are arranged at one ends of the displacement rods away from the center of the nested support column. Inner heat dissipation roller units are arranged on both sides of the U-shaped connecting rods.

[0012] As a further optimized solution of the present invention, a limiting convex block is arranged on one side of the displacement rod in contact with the nested support column. A limiting sliding groove adapted to the limiting convex block is arranged on the outer side of the nested support column. The limiting convex block slides linearly in a limited manner inside the limiting sliding groove. Springs firmly connected to the edge of the end face of the nested support column are arranged at one ends of the displacement rods close to the center of the nested support column. The end face of the displacement rod close to the center of the nested support column is in contact with the outer side of the cam unit.

[0013] As a further optimized solution of the present invention, the internal heat dissipation roller unit includes a heat dissipation support roller rotatably connected to a U-shaped connecting rod. Support sleeves are provided on both sides of the U-shaped connecting rod that are away from each other. The outer side of the support sleeve is rotatably and sealingly connected to the heat dissipation support roller. A first inner cavity is provided inside the heat dissipation support roller, and a second inner cavity is provided inside the support sleeve. A communication hole is provided for communicating between the first inner cavity and the second inner cavity.

[0014] As a further optimized solution of the present invention, inner ring grooves are evenly provided on the outer side of the heat dissipation support roller. First through holes communicating with the first inner cavity are evenly provided inside the inner ring grooves. The input ends of the two support sleeves are jointly communicated with a conveying branch pipe, and the input end of the conveying branch pipe is jointly communicated with a second conveying pipe.

[0015] As a further optimized solution of the present invention, the driving and rotating assembly includes a first support truss, a first driving motor, a first telescopic cylinder, and a roller. The first support truss is horizontally and transversely slidably connected to the top of the cutting support platform. A first telescopic cylinder is provided on the top of the first support truss. A roller that fits against the outer side of the metal pipe is provided at the bottom end of the first telescopic cylinder. A first driving motor rotatably connected to the roller is provided outside the first telescopic cylinder.

[0016] As a further optimized solution of the present invention, the cutting and positioning assembly includes a second support truss. A second telescopic cylinder is provided on the top of the second support truss. An installation frame is provided at the output end of the second telescopic cylinder. An external heat dissipation roller unit is provided directly below the bottom of the installation frame. The structural functions of the external heat dissipation roller unit are the same as those of the internal heat dissipation roller unit. A laser cutting assembly is provided at the middle position of the external heat dissipation roller unit. An auxiliary roller assembly that fits against the outer side of the metal pipe is provided at one end of the bottom of the installation frame. The structural functions of the auxiliary roller assembly are the same as those of the roller. The input end of the external heat dissipation roller unit is communicated with a first conveying pipe.

[0017] As a further optimized solution of the present invention, the support and conveying units are evenly distributed on both sides of the top of the cutting support platform and support the bottom of the metal pipe. The feeding hopper is located at the bottom of the cutting support platform and is communicated with the top of the cutting support platform. The feeding hopper is located directly below the inner sides of the two side support assemblies.

[0018] The beneficial effects of the present invention are as follows: Through the synergistic effect of the embedded heat dissipation roller unit and the external heat dissipation roller unit, the processing quality of copper / aluminum alloy pipes is significantly optimized. The coolant forms a vortex through the annular grooves and through holes of the internal heat dissipation roller, realizing synchronous directional spraying on the inner and outer walls of the pipe, quickly reducing the temperature in the cutting area, and reducing the width of the heat affected zone. The displacement rod structure driven by the cam enables the heat dissipation roller to adapt to different pipe diameters and effectively suppresses the radial vibration of the pipe, thoroughly solving the problems of thermal deformation and precision control of high thermal conductivity materials. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0021] Figure 3 is the structural function schematic diagram of the present invention;

[0022] Figure 4 is the enlarged schematic diagram of the structure at the cutting positioning component of the present invention;

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

[0024] Figure 6 is Figure 5 the enlarged schematic diagram of the structure at A of

[0025] Figure 7 is the enlarged schematic diagram of the structure at the nested support column of the present invention;

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

[0027] Figure 9 is the enlarged schematic diagram of the structure at the side support component of the present invention;

[0028] Figure 10 is the enlarged schematic diagram of the structure at the internal heat dissipation roller unit of the present invention;

[0029] Figure 11 is the enlarged cross-sectional view of the structure at the internal heat dissipation roller unit of the present invention;

[0030] Figure 12 is Figure 11 the enlarged schematic diagram of the structure at B of

[0031] In the figure:

[0032] 100, Support base assembly; 200, Metal tube; 300, Driving 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, Hopper;

[0034] 301, First support truss; 302, First driving 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 rack;

[0036] 501, Nesting support column; 502, Transmission shaft; 503, Internal heat dissipation roller unit; 504, Cam unit; 505, Second conveying pipe; 506, Support block; 507, Displacement rod; 508, Spring; 509, Limit sliding groove; 510, Support shaft; 511, Conveying branch pipe; 512, U-shaped connecting rod; 513, Second driving motor; 514, Synchronous transmission unit; 515, Gear; 516, Limit convex block;

[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, Communication hole;

[0038] 601, Side support plate; 602, Linear slide rail; 603, Inner support plate; 604, Rack. Detailed implementation mode

[0039] Now, the subject matter described herein will be discussed with reference to exemplary implementation modes. It should be understood that discussing these implementation modes is only to enable those skilled in the art to better understand and thus implement the subject matter described herein. Without departing from the protection scope of the content of this specification, changes can be made to the functions and arrangements of the elements discussed. Each example can omit, substitute, or add various processes or components as needed. Additionally, the features described relative to some examples can also be combined in other examples.

[0040] Example 1

[0041] As Figures 1 to 3As shown in the figure, a laser cutting device for the production of hardware fittings includes a support base assembly 100. The support base assembly 100 includes a cutting support platform 101, a support conveying unit 102, and a blanking hopper 103. In the middle of the top of the cutting support platform 101, a metal tube 200 is horizontally supported. At one end of the back of the top of the cutting support platform 101, a driving rotation assembly 300 and a cutting positioning assembly 400 are respectively arranged. The driving rotation assembly 300 is close to the middle position of the metal tube 200, and the driving rotation assembly 300 is horizontally slidably connected to the top of the cutting support platform 101. The cutting positioning assembly 400 is close to the end of the metal tube 200;

[0042] On both sides of the top of the cutting support platform 101 close to the end of the metal tube 200, side support assemblies 600 are symmetrically arranged. An embedded heat dissipation support mechanism 500 is arranged inside the side support assemblies 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 to support and dissipate heat from the inside of the metal tube 200. The other end of the embedded heat dissipation support mechanism 500 is hinged with a horizontal telescopic displacement assembly 700. The horizontal telescopic displacement assembly 700 drives the embedded heat dissipation support mechanism 500 to horizontally displace on the top of the cutting support platform 101;

[0043] As Figures 5 to 9 shown, the embedded heat dissipation support mechanism 500 further includes two support blocks 506 fixedly connected to the horizontal telescopic displacement assembly 700. Support shafts 510 penetrating through the support blocks 506 are arranged at positions of the nested support column 501 close to the two support blocks 506. A bearing seat is arranged between the outer side of the support shaft 510 and the support block 506. Gears 515 are arranged at the ends of the two support shafts 510 away from each other. The side support assembly 600 includes side support plates 601, linear slide rails 602, inner support plates 603, and racks 604. There are two side support plates 601, which are symmetrically installed on the top of the cutting support platform 101. Linear slide rails 602 are symmetrically arranged on the sides of the two side support plates 601 close to each other. One end of the linear slide rail 602 is close to the metal tube 200, and the linear slide rail 602 is located at the bottom of the support shaft 510. A flat groove fitting into the top of the linear slide rail 602 is arranged at the bottom of the support shaft 510. Inner support plates 603 are symmetrically arranged on the sides of the two side support plates 601 close to each other. Racks 604 are arranged at the bottoms of the inner support plates 603. The inner support plates 603 are located above the linear slide rails 602, and the input ends of the inner support plates 603 are correspondingly connected to the output ends of the linear slide rails 602. The gears 515 are meshed with the racks 604;

[0044] As Figures 5 to 12As shown, a transmission shaft 502 is penetrated through the middle parts at both ends of the nested support column 501. A second driving motor 513 is arranged at one end of the nested support column 501 close to the horizontal telescopic displacement assembly 700. A synchronous transmission unit 514 is arranged between the output end of the second driving motor 513 and one end of the corresponding transmission shaft 502. A cam unit 504 is arranged at the other end of the transmission shaft 502. A plurality of groups of displacement rods 507 that slide on its surface are evenly arranged on the outer side of the nested support column 501 close to the cam unit 504. U-shaped connecting rods 512 are arranged at the ends of the displacement rods 507 far from the center of the nested support column 501. Inner heat dissipation roller units 503 are arranged on both sides of the U-shaped connecting rod 512. A limiting convex block 516 is arranged on the side of the displacement rod 507 that fits the nested support column 501. A limiting sliding groove 509 that is mutually adapted to the limiting convex block 516 is arranged on the outer side of the nested support column 501. The limiting convex block 516 slides linearly within the limiting sliding groove 509. Springs 508 that are tightly connected to the edge of the end face of the nested support column 501 are arranged at the ends of the displacement rods 507 close to the center of the nested support column 501. The end face of the displacement rod 507 close to the center of the nested support column 501 is mutually attached to the outer side of the cam unit 504. The inner heat dissipation roller unit 503 includes a heat dissipation support roller 5031 that is rotatably connected to the U-shaped connecting rod 512. Support sleeves 5036 are arranged on both sides of the U-shaped connecting rod 512 that are far from each other. The heat dissipation support roller 5031 is rotatably and hermetically connected to the outer side of the support sleeve 5036. A first inner cavity 5034 is arranged on the inner side of the heat dissipation support roller 5031. A second inner cavity 5035 is arranged on the inner side of the support sleeve 5036. A communication hole 5037 is communicated between the first inner cavity 5034 and the second inner cavity 5035;

[0045] Inner ring grooves 5032 are evenly arranged on the outer side of the heat dissipation support roller 5031. First through holes 5033 that are mutually communicated with the first inner cavity 5034 are evenly arranged on the inner side of the inner ring grooves 5032. The input ends of the two groups of support sleeves 5036 are jointly communicated with a conveying branch pipe 511. The input end of the conveying branch pipe 511 is jointly communicated with a second conveying pipe 505. The driving rotation assembly 300 includes a first support truss 301, a first driving motor 302, a first telescopic cylinder 303, and a roller 304. The first support truss 301 is horizontally and transversely slidably connected to the top of the cutting support platform 101. A first telescopic cylinder 303 is arranged on the top of the first support truss 301. A roller 304 that fits the outer side of the metal pipe 200 is arranged at the bottom end of the first telescopic cylinder 303. A first driving motor 302 that is rotatably connected to the roller 304 is arranged on the outer side of the first telescopic cylinder 303;

[0046] As Figures 1 to 4As shown in the figure, 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. An installation frame 407 is provided at the output end of the second telescopic cylinder 404. Right below the bottom of the installation frame 407 is an outer heat dissipation roller unit 402. The structural function of the outer heat dissipation roller unit 402 is the same as that of 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. At one end of the bottom of the installation frame 407 is an auxiliary roller assembly 406 that fits against the outer side of the metal tube 200. The structural function of the auxiliary roller assembly 406 is the same as that of the roller 304. The input end of the outer heat dissipation roller unit 402 is connected to a first delivery pipe 403;

[0047] The support and conveying units 102 are evenly distributed on both sides of the top of the cutting support platform 101 and support the bottom of the metal tube 200. The hopper 103 is located at the bottom of the cutting support platform 101 and is in communication with 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 assemblies 600.

[0048] In the use process of the laser cutting device for hardware accessory production proposed in this embodiment, when the device is in use, the metal tube 200 to be laser cut is placed on the top of the support and conveying unit 102. Then, the position of the first support truss 301 is adjusted to drive the roller 304 to move as a whole, and the first telescopic cylinder 303 is started to drive the roller 304 to move downward to fit against the outer side of the metal tube 200, realizing the preliminary positioning of the metal tube 200;

[0049] Furthermore, by starting the horizontal telescopic displacement assembly 700, the nested support column 501 is driven to penetrate into the inner side of the metal tube 200 as a whole, so that the inner heat dissipation roller unit 503 at one end of the nested support column 501 moves synchronously. At this time, the support shaft 510 moves synchronously. The plane groove at the bottom of the support shaft 510 slides on the top of the linear slide rail 602, so that the nested support column 501 as a whole will not rotate due to gravity;

[0050] When the nested support column 501 reaches the predetermined position as a whole, at this time, 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. One end of the displacement rod 507 is pushed and squeezed by the outer side of the cam unit 504, so that the displacement rod 507 moves outward from the nested support column 501. At this time, the displacement rod 507 is limited by the limit convex block 516 and the limit chute 509, so as to maintain a linear displacement. The spring 508 is stretched by the displacement of the displacement rod 507;

[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 fit against the inner side of the metal tube 200. When the outer side of the inner heat dissipation roller unit 503 fits against the inner side of the metal tube 200, the second driving motor 513 is turned off to position the inner heat dissipation roller unit 503. Then, an inner support structure is formed on the inner side of the metal tube 200 through the support of several groups of inner heat dissipation roller units 503;

[0052] Further, the second telescopic cylinder 404 is started to drive the mounting frame 407 to displace downward, so that the outer heat dissipation roller unit 402 at the bottom of the mounting frame 407 fits against the outer side of the metal tube 200. At the same time, the auxiliary roller assembly 406 fits against the outer side of the metal tube 200, and the laser cutting assembly 405 is controlled through an external central control unit to cut the metal tube 200;

[0053] When the laser cutting assembly 405 is started, coolant is simultaneously conveyed into the interior of the outer heat dissipation roller unit 402 through the first delivery pipe 403. At the same time, coolant is conveyed into 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 driving motor 302 is started to drive the multi-functional roller 304 to rotate, and then the rotation friction force of the roller 304 drives the metal tube 200 to rotate;

[0055] Here, through the specific structure of the inner heat dissipation roller unit 503 for further analysis, after the coolant is conveyed into the interior of the support sleeve 5036 through the delivery branch pipe 511, it enters the interior of the second inner cavity 5035 and is conveyed to the position of the first inner cavity 5034 through the communication hole 5037, and then sprays out through the first through hole 5033 to perform heat exchange absorption on the inner side of the metal tube 200, thereby cooling the cutting part of the metal tube 200;

[0056] Similarly, the coolant sprays out through the position of the outer heat dissipation roller unit 402 to cool the outer side of the metal tube 200, thereby achieving the function of heat exchange absorption;

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

[0058] With the rotation of the metal pipe 200, the laser cutting assembly 405 can complete the annular cutting function of the metal pipe 200. After the metal pipe 200 is cut, the laser cutting assembly 405 is turned off, and the horizontal telescopic displacement assembly 700 is started to drive the nested support column 501 to move horizontally in the reverse direction;

[0059] At this time, the gear 515 moves along with the displacement. When the support shaft 510 drives the gear 515 to move to the end of the linear slide rail 602, the gear 515 meshes with the rack 604. Then, with the continuous displacement of the nested support column 501, through the meshing rotation of the gear 515 and the rack 604, the end of the nested support column 501 close to the metal pipe 200 deflects downward, so that the cut metal pipe 200 supported on the outer side of the inner heat dissipation roller unit 503 can be displaced to the top position of the discharge 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 elastic force of the spring 508, several groups of inner heat dissipation roller units 503 are driven to reset, and the cut metal pipe 200 slides out along the channel of the discharge hopper 103, thus completing the laser cutting function of the metal pipe 200 once.

[0060] The specific implementation manners of the embodiments of the present invention have been described above, but the embodiments of the present invention are not limited to the above specific implementation manners. The above specific implementation manners are only illustrative and not restrictive. Under the inspiration of the embodiments of the present invention, those of ordinary skill in the art can also make many forms, all of which fall within the protection scope of the embodiments of the present invention.

Claims

1. A laser cutting device for hardware accessories production, characterized in that: The invention comprises a support base assembly (100), wherein the support base assembly (100) comprises a cutting support platform (101), a support conveying unit (102) and a lower hopper (103); a metal pipe (200) is horizontally supported in the middle of the top of the cutting support platform (101); a driving rotation assembly (300) and a cutting positioning assembly (400) are respectively arranged at one end of the back side of the top of the cutting support platform (101); the driving rotation assembly (300) is located near the middle of the metal pipe (200), and the driving rotation assembly (300) is horizontally slidably connected to the top of the cutting support platform (101); and the cutting positioning assembly (400) is located near the end of the metal pipe (200); A side support assembly (600) is symmetrically arranged at a position near the end of the metal tube (200) on the top of the cutting support platform (101); an embedded heat dissipation support mechanism (500) is arranged on the inner side of the side support assembly (600); the embedded heat dissipation support mechanism (500) comprises a nested support column (501); one end of the nested support column (501) extends to the inner side of the metal tube (200) and supports the inner side of the metal tube (200) for heat dissipation; the other end of the embedded heat dissipation support mechanism (500) is hingedly connected to a horizontal telescopic displacement assembly (700); the horizontal telescopic displacement assembly (700) drives the embedded heat dissipation support mechanism (500) to horizontally displace on the top of the cutting support platform (101).

2. A laser cutting device for hardware accessories production according to claim 1, characterized in that: The embedded heat dissipation support mechanism (500) further comprises two groups of support blocks (506) which are fastened to the horizontal telescopic displacement assembly (700); the nested support columns (501) are provided with support shafts (510) penetrating the support blocks (506) at positions close to the two groups of support blocks (506); a bearing seat is provided between the outer side of the support shaft (510) and the support block (506); and gears (515) are provided at the ends of the two groups of support shafts (510) which are away from each other.

3. A laser cutting device for hardware accessories production according to claim 2, characterized in that: The side support assembly (600) includes a side support plate (601), a linear slide rail (602), an inner support plate (603) and a rack (604). The side support plates (601) are in two groups and are symmetrically mounted on the top of the cutting support platform (101). The linear slide rails (602) are symmetrically arranged on the sides of the two groups of side support plates (601) close to each other. The linear slide rails (602) are close to one end of the metal pipe (200) and are located at the bottom of the support shaft (510). The bottom of the support shaft (510) is provided with a planar groove that is embedded in the top of the linear slide rail (602), and the inner support plate (603) is symmetrically provided on the side where the two groups of side support plates (601) are close to each other, and the bottom of the inner support plate (603) is provided with a rack (604), the inner support plate (603) is located above the linear slide rail (602), and the input end of the inner support plate (603) is correspondingly connected to the output end of the linear slide rail (602), and the gear (515) and the rack (604) are meshed with each other.

4. The laser cutting device for hardware accessories production according to claim 1, characterized in that: A transmission 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) close to the horizontal telescopic displacement assembly (700); a synchronous transmission unit (514) is provided at the output end of the second drive motor (513) and one end of the corresponding transmission shaft (502); a cam unit (504) is provided at the other end of the transmission shaft (502); a plurality of groups of displacement rods (507) are evenly provided on the outer side of one end of the nested support column (501) close to the cam unit (504) and are slidably displaced on the surface thereof; a U-shaped connecting rod (512) is provided at one end of the displacement rod (507) away from the center of the nested support column (501); and inner heat dissipation roller units (503) are provided on both sides of the U-shaped connecting rod (512).

5. A laser cutting device for producing hardware accessories according to claim 4, characterized in that: A limiting protrusion (516) is provided on one side of the displacement rod (507) that fits the nested support column (501), and a limiting sliding groove (509) that is compatible with the limiting protrusion (516) is provided on the outer side of the nested support column (501). The limiting protrusion (516) slides linearly in a limited manner inside the limiting sliding groove (509). A spring (508) that is tightly connected to the edge of the end face of the nested support column (501) is provided at one end of the displacement rod (507) close to the center of the nested support column (501), and the end face of the displacement rod (507) close to the center of the nested support column (501) fits with the outer side of the cam unit (504).

6. The laser cutting device for producing hardware accessories according to claim 4, characterized in that: The inner heat dissipation roller unit (503) comprises a heat dissipation support roller (5031) rotatably connected to a U-shaped connecting rod (512); a support sleeve (5036) is provided on the side of the U-shaped connecting rod (512) that is away from each other; the outer side of the support sleeve (5036) is rotatably and sealingly connected to the heat dissipation support roller (5031); a first inner cavity (5034) is provided on the inner side of the heat dissipation support roller (5031); a second inner cavity (5035) is provided on the inner side of the support sleeve (5036); and a connecting hole (5037) is provided between the first inner cavity (5034) and the second inner cavity (5035).

7. A laser cutting device for producing hardware accessories according to claim 6, characterized in that: The outer side of the heat dissipation support roller (5031) is evenly provided with an inner ring groove (5032), the inner side of the inner ring groove (5032) is evenly provided with a first through hole (5033) interconnected with the first inner cavity (5034), the input ends of the two groups of support sleeves (5036) are commonly connected to a delivery branch pipe (511), and the input ends of the delivery branch pipes (511) are commonly connected to a second delivery pipe (505).

8. The laser cutting device for hardware accessories production according to claim 1, characterized in that: The driving rotation assembly (300) comprises a first supporting truss (301), a first driving motor (302), a first telescopic cylinder (303) and a roller (304); the first supporting truss (301) is horizontally and laterally slidably connected to the top of the cutting support platform (101); the top of the first supporting truss (301) is provided with a first telescopic cylinder (303); the bottom end of the first telescopic cylinder (303) is provided with a roller (304) that fits the outer side of the metal pipe (200); and the outer side of the first telescopic cylinder (303) is provided with a first driving motor (302) that is rotatably connected to the roller (304).

9. The laser cutting device for hardware accessories production according to claim 1, characterized in that: The cutting and positioning assembly (400) comprises a second supporting truss (401), a second telescopic cylinder (404) is arranged at the top of the second supporting truss (401), a mounting frame (407) is arranged at the output end of the second telescopic cylinder (404), an outer heat dissipation roller unit (402) is arranged directly below the bottom of the mounting frame (407), the structure and function of the outer heat dissipation roller unit (402) are the same as those of the inner heat dissipation roller unit (503), a laser cutting assembly (405) is arranged at the middle position of the outer heat dissipation roller unit (402), an auxiliary roller assembly (406) which is in contact with the outer side of the metal tube (200) is arranged at one end of the bottom of the mounting frame (407), the structure and function of the auxiliary roller assembly (406) are the same as those of the roller wheel (304), and the input end of the outer heat dissipation roller unit (402) is connected to the first conveying pipe (403).

10. The laser cutting device for hardware accessories production according to claim 1, characterized in that: The support and conveying units (102) are evenly distributed on both sides of the top of the cutting support platform (101) and support the bottom of the metal pipe (200). The lower hopper (103) is located at the bottom of the cutting support platform (101) and is interconnected at the top of the cutting support platform (101). The lower hopper (103) is located directly below the inner side of the two groups of side support assemblies (600).

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