Precise laser cutting machine for metal coil stock

Abstract

The utility model discloses a metal coil stock precise laser cutting machine which comprises a coil stock discharging frame and a machine frame, a workbench is arranged on the machine frame, and a servo feeding device, a material clamping device, a material pulling device, a needle plate assembly and a laser cutting device are installed on the workbench. The roll material placing frame is used for placing and supplying a rolled metal material strip; the servo feeding device is used for conveying a material belt to the material clamping device and the material pulling device; the material pulling device is used for clamping the end of a material strip and pulling the metal material strip from one side of the needle plate assembly to the other side of the needle plate assembly. The material clamping device is used for clamping the material strip after the material pulling device pulls materials in place. The needle plate assembly comprises a needle plate lifting device and a needle plate, and the needle plate lifting device is used for driving the needle plate to lift; the laser cutting device is used for laser cutting of the material belt on the needle plate assembly. According to the utility model, the material belt can be flatly unfolded on the needle plate assembly, the needle plate is prevented from interfering with the conveying and pulling of the material belt, the material belt is high in positioning stability and flatness, and the high precision of laser cutting is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of laser cutting equipment, in particular to a metal coil precision laser cutting machine. Background Art

[0002] Laser cutting replaces traditional mechanical knives with laser beams. It offers advantages such as high precision, fast cutting speed, freedom from cutting pattern restrictions, smooth cuts, and low processing costs. Laser cutting requires the use of a laser cutting machine. Prior art laser cutting machines are used to cut certain metal sheets into specific shapes. Metal sheets typically exist in the form of rolled metal strips, also known as coils. However, current laser cutting machines struggle to simultaneously transport, flatten, clamp, and support the metal strips, making it difficult to guarantee laser cutting accuracy for coils.

[0003] See Chinese patent document CN218836493U, which discloses a fully automatic coil-material rapid slicing laser cutting device, comprising an equipment stand, a coil-material unloading rack, a front guide rack, a material pulling mechanism, a laser cutting assembly, a slicing mechanism, a material receiving mechanism, a material receiving bin, a cutting platform, and a removal rack. The coil-material unloading rack is arranged at the front of the equipment stand, and the front guide rack, cutting platform, and material receiving bin are sequentially arranged on the equipment stand. The material pulling mechanism comprises a material pulling support, a downward pressure cylinder, and a pressing rubber roller. The downward pressure cylinder is mounted on the material pulling support, and its telescopic end is connected to the pressing rubber roller and presses down, abutting against the lower rubber roller arranged on the equipment stand to achieve coil material compression and thus material pulling. The laser cutting assembly is arranged above the cutting platform, and the material receiving mechanism is arranged above the material receiving bin. Material pulling mechanisms are provided at both ends of the cutting platform and the front end of the material receiving bin to assist in the pulling and feeding of coil material. This patent document can realize the functions of coil material conveying, cutting, slicing, and receiving.

[0004] However, the Chinese patent document CN218836493U also has the following technical defects: (1) The laser cutting equipment relies solely on the pulling mechanism to convey the material strip, and it is difficult to smoothly unfold the material strip onto the cutting platform, which affects the laser cutting accuracy; (2) When the laser cutting equipment conveys the material strip onto the cutting platform, it is easily affected by the interference of the cutting platform and becomes stuck, further reducing the flatness of the material strip; (3) The laser cutting equipment relies on vacuum adsorption of the cutting platform to fix the material strip. This method is often only suitable for vacuum adsorption of thinner film-like material strips. For thicker metal material strips, it is often difficult to adsorb them. In addition, the laser cutting head can easily cut and damage the vacuum adsorption cutting platform during the laser cutting process. At the same time, the dust generated during the laser cutting process can easily block the vacuum adsorption holes, and the dust is difficult to clean. Therefore, this cutting platform is difficult to be used for laser cutting of metal material strips. Utility Model Content

[0005] The technical problem to be solved by the present invention is to provide a precision laser cutting machine for metal coils based on the above-mentioned deficiencies in the prior art. In the process of the servo feeding device transmitting the metal strip, the laser cutting machine can use a pulling device to clamp the end of the metal strip and pull the metal strip from one side of the needle plate assembly to the other side of the needle plate assembly, so that the metal strip can be smoothly unfolded onto the needle plate assembly; in the pulling process of the pulling device of the laser cutting machine, the needle plate lifting device of the needle plate assembly can drive the needle plate to descend, so as to avoid the interference of the needle plate affecting the transmission and pulling of the metal strip, thereby avoiding the problem of feeding jam; the laser cutting machine can use the pulling device and the clamping device to cooperate with each other on both sides of the needle plate assembly to clamp and position the metal strip, and at the same time, can use the needle plate lifting device of the needle plate assembly to drive the needle plate to rise and support the metal strip, so that the metal strip is positioned stably and flatly, thereby ensuring the high precision of laser cutting; the laser cutting machine uses a needle plate to support the metal strip, the needle plate is easy to replace, and is difficult to be damaged by laser cutting, and the dust generated by laser cutting can fall down from the gap between the needle plates.

[0006] In order to solve the above technical problems, the technical solution of the utility model is: a precision laser cutting machine for metal coils, comprising a coil unloading rack and a frame, a workbench is provided on the frame, and a servo feeding device, a clamping device, a pulling device, a needle plate assembly and a laser cutting device are installed on the workbench; the coil unloading rack is arranged on one side of the frame for placing the rolled metal strip and supplying the metal strip to the servo feeding device; the servo feeding device is used to transfer the metal strip to the working position of the clamping device and the pulling device; the pulling device is used to clamp the end of the metal strip and pull the metal strip from one side of the needle plate assembly to the other side of the needle plate assembly, the clamping device is located on one side of the needle plate assembly, and the clamping device is used to clamp the metal strip after the pulling device pulls the material into place; the needle plate assembly includes a needle plate lifting device and a needle plate installed on the needle plate lifting device, and the needle plate lifting device is used to drive the needle plate to lift; the laser cutting device is used to laser cut the metal strip on the needle plate assembly.

[0007] In the above technical solution, the workbench is a marble workbench, which is provided with a cavity that passes through from top to bottom. The needle plate assembly is located at the upper end of the cavity, and a material receiving frame is provided at the lower end of the frame, which is located below the cavity.

[0008] In the above technical solution, the servo feeding device includes a base plate, two active roller support seats, a servo motor, a coupling, an active roller, two pressure roller adjustment mechanisms and a pressure roller; the two active roller support seats are respectively installed on the base plate, the servo motor is installed on the side of an active roller support seat, the active roller is rotatably installed between the lower ends of the two active roller support seats, the coupling is connected between the motor shaft of the servo motor and one end of the active roller, the two pressure roller adjustment mechanisms are installed at the upper ends of the corresponding active roller support seats, the two ends of the pressure roller are rotatably installed between the two pressure roller adjustment mechanisms, and the pressure roller and the active roller correspond to each other up and down and are tightly fitted with each other. A plurality of follower roller assemblies are installed at intervals on the base plate, and the follower roller assembly includes a follower roller support seat and a follower roller installed on the follower roller support seat; the servo feeding device also includes two adjustment plates, and the two adjustment plates are respectively installed on the front and rear ends of the base plate, and the distance between the two adjustment plates can be adjusted. A plurality of guide wheel assemblies are installed at intervals on the adjustment plate, and the guide wheel assembly includes a guide wheel support seat and a guide wheel installed on the guide wheel support seat.

[0009] In the above technical solution, the clamping device includes a first clamping plate, a first guide rod, a second clamping plate, a first cylinder and a first linear bearing. The second clamping plate corresponds to the first clamping plate up and down and cooperates with each other. The first guide rod is vertically installed on the first clamping plate. The first cylinder and the first linear bearing are respectively installed on the second clamping plate. The first guide rod moves through the first linear bearing. The cylinder telescopic rod of the first cylinder extends downward and connects to the first clamping plate.

[0010] In the above technical scheme, the pulling device includes a linear transmission module, a linear guide rail, a sliding block, a third splint, a second guide rod, a fourth splint, a second cylinder and a second linear bearing; the linear transmission module is installed on the rear side of the needle plate assembly, the linear guide rail is installed on the front side of the needle plate assembly, the sliding block is installed on the linear guide rail, one end of the third splint is connected to the linear transmission module, and the other end of the third splint is connected to the sliding block; the fourth splint corresponds to the third splint up and down and cooperates with each other, the second guide rod is vertically installed on the third splint, the second cylinder and the second linear bearing are respectively installed on the fourth splint, the second guide rod moves through the second linear bearing, and the cylinder telescopic rod of the second cylinder extends downward and connects the third splint.

[0011] In the above technical solution, the linear transmission module includes a module base body, a module guide plate, a module translation block, a screw rod, a screw rod nut and a screw rod motor. The two ends of the module guide plate are installed on the module base body. There is a gap between the module guide plate and the module base body. The screw rod is located in the gap between the module guide plate and the module base body, and the two ends of the screw rod are rotatably installed on the module base body; the screw rod nut is installed on the screw rod and is threadedly transmitted with the screw rod. The screw rod motor is installed on one end of the module base body, and the screw rod motor can drive the screw rod to rotate; the module translation block is slidably installed on the module guide plate, and the lower end of the module translation block is connected to the screw rod nut.

[0012] In the above technical solution, the needle plate lifting device of the needle plate assembly includes several third cylinders and a needle plate fixing frame, the cylinder telescopic rod of the third cylinder extends upward and is connected to the needle plate positioning frame, and the needle plate is installed on the needle plate fixing frame; the needle plate lifting device of the needle plate assembly also includes a front support plate, a rear support plate, a third guide rod and a third linear bearing, and two third cylinders are respectively installed on the front support plate and the rear support plate, and the needle plate fixing frame is provided with two, one of the needle plate fixing frames corresponds to the position of the front support plate up and down, and the other needle plate fixing frame corresponds to the position of the rear support plate up and down; two third guide rods are tightly installed on the lower side of the needle plate fixing frame, and two third linear bearings are respectively installed on the front support plate and the rear support plate, and the third guide rods move through the corresponding third linear bearings.

[0013] In the above technical solution, the laser cutting device includes a left X-axis transmission device, a right X-axis transmission device, a Y-axis transmission device, a Z-axis transmission device and a laser cutting head. The X-axis transmission device is installed on the left end of the frame, the right X-axis transmission device is installed on the right end of the frame, the two ends of the Y-axis transmission device are installed on the left X-axis transmission device and the right X-axis transmission device, the Z-axis transmission device is installed on the Y-axis transmission device, and the laser cutting head is installed on the Z-axis transmission device.

[0014] In the above technical solution, the left X-axis transmission device and the right X-axis transmission device are respectively installed with X-axis guide rails, and the X-axis linear motor is installed on the X-axis guide rails. Both ends of the Y-axis transmission device are installed on the corresponding X-axis linear motors, and the Y-axis transmission device is installed with a Y-axis guide rail, and the Y-axis linear motor is installed on the Y-axis guide rails. The Z-axis transmission device is installed on the Y-axis linear motor, and the Z-axis transmission device is a screw transmission mechanism.

[0015] The beneficial effects of the present invention are as follows: (1) the present invention is provided with a servo feeding device and a pulling device. In the process of conveying the metal strip, the servo feeding device can use the pulling device to clamp the end of the metal strip and pull the metal strip from one side of the needle plate assembly to the other side of the needle plate assembly, so that the metal strip can be smoothly unfolded onto the needle plate assembly; (2) in the present invention, since the needle plate assembly includes a needle plate lifting device and a needle plate installed on the needle plate lifting device, the needle plate lifting device is used to drive the needle plate to rise and fall. Therefore, in the process of pulling the metal strip, the needle plate lifting device of the needle plate assembly can drive the needle plate to fall, so as to avoid the interference of the needle plate affecting the conveying and pulling of the metal strip. (3) The present invention is provided with a clamping device on one side of the needle plate assembly, and the clamping device is used to clamp the metal strip after the pulling device has pulled the material into place. Therefore, the present invention can use the pulling device and the clamping device to clamp and position the metal strip together on both sides of the needle plate assembly, and at the same time can use the needle plate lifting device of the needle plate assembly to drive the needle plate to rise and support the metal strip, so that the metal strip is positioned with high stability and high flatness, thereby ensuring high precision of laser cutting; (4) The present invention uses a needle plate to support the metal strip, the needle plate is easy to replace, and is difficult to be damaged by laser cutting, and the dust generated by laser cutting can fall down from the gap of the needle plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the overall structure diagram of the metal coil precision laser cutting machine.

[0017] Figure 2 This is the overall structure diagram of the metal coil precision laser cutting machine after removing the outer cover.

[0018] Figure 3 This is a diagram of the dispersed structure of the machine frame, marble workbench and material receiving frame.

[0019] Figure 4 It is a three-dimensional structural diagram of the marble workbench, servo feeding device, clamping device, pulling device and needle plate assembly.

[0020] Figure 5 This is a three-dimensional structural diagram of the servo feeding device.

[0021] Figure 6 It is a three-dimensional structural diagram of the active roller support seat, servo motor, coupling, active roller, pressure roller adjustment mechanism and pressure roller.

[0022] Figure 7 It is a three-dimensional structural diagram of the clamping device.

[0023] Figure 8 This is a diagram of the dispersed structure of the clamping device.

[0024] Figure 9It is a three-dimensional structural diagram of the pulling device.

[0025] Figure 10 This is a decentralized structure diagram of the pulling device.

[0026] Figure 11 This is one of the three-dimensional structural diagrams of the needle plate assembly.

[0027] Figure 12 This is the second three-dimensional structural diagram of the needle plate assembly.

[0028] Figure 13 This is a three-dimensional structural diagram of the laser cutting device. DETAILED DESCRIPTION

[0029] The structural principle and working principle of the present invention are further described in detail below with reference to the accompanying drawings.

[0030] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "backward," "left," "right," and the like, indicating directions or positions, are based on the directions or positions shown in the accompanying drawings. The terms "X-axis," "Y-axis," and "Z-axis" refer to the directions of movement of the laser cutting head and are used solely to facilitate the description of this utility model and simplify the description and should not be construed as limiting the utility model.

[0031] like Figures 1-13 As shown, the utility model is a metal coil precision laser cutting machine, comprising a coil unwinding rack 1 and a frame 2, on which a servo feeding device 4, a clamping device 5, a pulling device 6, a needle plate assembly 7 and a laser cutting device 8 are installed; an outer cover 3 is also provided on the frame, and the outer cover 3 covers the servo feeding device 4, the clamping device 5, the pulling device 6, the needle plate assembly 7 and the laser cutting device 8, and a computer control device 31 is installed outside the outer cover 3; the coil unwinding rack 1 is arranged on one side of the frame 2, for placing a rolled metal strip 100 and supplying the metal strip 100 to the servo feeding device 4; the servo feeding device 4 is used to feed the metal strip 100 to the servo feeding device 4; the servo feeding device 4 is used to feed the metal strip 100 to the servo feeding device 4; the servo feeding device 4 is used to feed the metal strip 100 to the servo feeding device 4. The metal strip 100 is transferred to the working positions of the clamping device 5 and the pulling device 6. The pulling device 6 is used to clamp the end of the metal strip 100 and pull the metal strip 100 from one side of the needle plate assembly 7 to the other side of the needle plate assembly 7. The clamping device 5 is located on one side of the needle plate assembly 7 and is used to clamp the metal strip 100 after the pulling device 6 has pulled the material into place. The needle plate assembly 7 includes a needle plate lifting device 71 and a needle plate 72 mounted on the needle plate lifting device 71. The needle plate lifting device 71 is used to drive the needle plate 72 to rise and fall. The laser cutting device 8 is used to laser cut the metal strip 100 on the needle plate assembly 7. The rolled metal strip 100 described in the present invention is a metal strip.

[0032] The cutting method of the metal coil precision laser cutting machine of the utility model includes the following cutting steps:

[0033] S1. The metal coil precision laser cutting machine is not started. A worker places a rolled metal strip 100 on a coil unwinding rack 1 and passes the metal strip 100 through a servo feeder 4 and a clamping device 5 before reaching a pulling device 6. The pulling device 6 is initially positioned near the clamping device 5, with the end of the metal strip 100 positioned within the clamping position of the pulling device 6. The clamping device 5 is initially released, allowing the metal strip 100 to pass through the clamping device 5.

[0034] S2. Start the metal coil precision laser cutting machine, the needle plate lifting device 71 drives the needle plate 72 down, the purpose of driving the needle plate 72 down is to avoid interference with the needle plate and affect the pulling device 6 pulling the metal strip 100;

[0035] S3. The servo feeder 4 and the puller 6 operate simultaneously. The puller 6 clamps the end of the metal strip 100 and pulls the metal strip 100 from one side of the needle plate assembly 7 to the other side of the needle plate assembly 7. During this process, the clamping device 5 is in a loose state, allowing the metal strip 100 to move through the clamping device 5.

[0036] S4. After the pulling device 6 pulls the material into place, the servo feeding device 4 stops working, and the clamping device 5 clamps the metal strip 100. At this time, the pulling device 6 and the clamping device 5 together position the metal strip 100;

[0037] S5. The needle plate lifting device 71 drives the needle plate 72 to rise, supporting the metal strip 100;

[0038] S6. The laser cutting device 8 laser cuts the metal strip 100 on the needle plate assembly 7. The laser-cut product is removed by hand or robot, and the ash residue after laser cutting falls down from the gap in the needle plate 72;

[0039] S7. After the laser cutting is completed, the needle plate lifting device 71 drives the needle plate 72 down, the pulling device 6 is reset to the initial working position, and the clamping device 5 is in a released state;

[0040] Repeat the above steps S3-S7 to complete each laser cutting operation.

[0041] The servo feeding device 4 of the present invention can utilize the pulling device 6 to clamp the end of the metal strip and pull the metal strip from one side of the needle plate assembly 7 to the other side of the needle plate assembly 7 during the process of conveying the metal strip 100, so that the metal strip can be smoothly unfolded onto the needle plate assembly 7; during the pulling process of the pulling device 6 of the present invention, the needle plate lifting device 71 of the needle plate assembly 7 can drive the needle plate 72 to descend, so as to avoid the interference of the needle plate 72 in affecting the conveying and pulling of the metal strip, and avoid the problem of feeding jamming; the utility model can The pulling device 6 and the clamping device 5 can be used to clamp and position the metal strip 100 on both sides of the needle plate assembly 7. At the same time, the needle plate lifting device 71 of the needle plate assembly 7 can be used to drive the needle plate 72 to rise and support the metal strip, so that the metal strip is positioned with high stability and high flatness, ensuring high precision of laser cutting. The utility model adopts the needle plate 72 to support the metal strip. The needle plate 72 is easy to replace and is difficult to be damaged by laser cutting. The dust generated during the laser cutting process can fall down from the gap of the needle plate 72, which is easy to clean.

[0042] like Figure 2-Figure 4 As shown, the frame 2 is provided with a marble workbench 21. The servo feeding device 4, clamping device 5, pulling device 6, needle plate assembly 7, and laser cutting device 8 are respectively mounted on the marble workbench 21. The marble workbench 21 is provided with a cavity 211 extending vertically therethrough. The needle plate assembly 7 is located at the upper end of the cavity 211. The lower end of the frame 2 is provided with a material receiving frame 9, which is located below the cavity 211. An exhaust dust removal device 22 is provided within the frame 2, located between the cavity 211 and the material receiving frame 9. The marble workbench 21 is provided with a cavity 211, which facilitates the installation of the needle plate assembly 7 and the removal of dust chips. The fallen dust chips and residues are collected in the material receiving frame 9.

[0043] like Figure 2 、 Figure 4-Figure 6As shown, the servo feeding device 4 includes a base plate 41, two active roller support seats 42, a servo motor 43, a coupling 44, a active roller 45, two pinch roller adjustment mechanisms 46, and a pinch roller 47. The two active roller support seats 42 are respectively mounted on the base plate 41, the servo motor 43 is mounted on the side of one active roller support seat 42, the active roller 45 is rotatably mounted between the lower ends of the two active roller support seats 42, the coupling 44 is connected between the motor shaft of the servo motor 43 and one end of the active roller 45, the two pinch roller adjustment mechanisms 46 are mounted on the upper ends of the corresponding active roller support seats 42, and the two ends of the pinch roller 47 are rotatably mounted between the two pinch roller adjustment mechanisms 46. The pinch roller 47 corresponds to the active roller 45 in a vertically corresponding manner and is pressed against each other. This device is equipped with a guide wheel assembly 2 to effectively prevent the metal strip from being deviated. The upper and lower pinch rollers are coated with silicone to prevent damage to the metal strip. The pinch roller 47 can be adjusted up and down by the pinch roller adjustment mechanism 46, adapting to different thicknesses of metal strips and controlling the pinch force. The servo motor 43 drives the active roller 45 to rotate, and together, the active roller 45 and pinch roller 47 compress and convey the metal strip. The surfaces of the active roller 45 and pinch roller 47 include a silicone layer to prevent damage to the metal strip.

[0044] like Figure 2 、 Figure 4-Figure 6 As shown, the upper end of the active roller support seat 42 is provided with a support seat slide 421, and the pressure roller adjustment mechanism 46 includes an adjusting slider 461, an adjusting screw mounting plate 462, an adjusting screw 463, a pressure rod 464, a pressure rod handle 465 and a spring 466. The end of the pressure roller 47 is rotatably mounted in the adjusting slider 461, and the adjusting slider 461 can be lifted and slidably mounted in the support seat slide 421. The adjusting screw mounting plate 462 is mounted on the top of the active roller support seat 42, and the adjusting screw 463 is mounted on the adjusting screw mounting plate 462. The pressure rod 464 vertically passes through the adjusting screw mounting plate 462 and is threadedly matched with the adjusting screw 463. The pressure rod handle 465 is mounted on the upper end of the pressure rod 464, and the lower end of the pressure rod 464 is rotatably connected to the adjusting slider 461. The spring 466 is mounted between the adjusting slider 461 and the adjusting screw mounting plate 462. By rotating the pressing handle 465, the pressing rod 464 can be raised or lowered, thereby driving the adjusting slider 461 to rise or fall, and finally the adjusting slider 461 drives the pressing roller 47 to rise or fall. The active roller support base 42 and the adjusting slider 461 are respectively installed with bearings, and the two ends of the active roller 45 and the pressing roller 47 are respectively installed in the corresponding bearings. The side of the active roller support base 42 is provided with a motor base 422, and the servo motor 43 is installed on the motor base 422.

[0045] like Figure 2 、 Figure 4-Figure 6 As shown, a plurality of follower roller assemblies 48 are installed at intervals on the bottom plate 41. The follower roller assembly 48 includes a follower roller support seat 481 and a follower roller 482 installed on the follower roller support seat 481. The metal strip 100 can pass over each follower roller assembly 48 during the conveying process.

[0046] like Figure 2 、 Figure 4-Figure 6 As shown, the servo feeding device 4 also includes two adjustment plates 49, which are respectively mounted on the front and rear ends of the base plate 41. The spacing between the two adjustment plates 49 is adjustable. A plurality of guide wheel assemblies 40 are mounted at intervals on the adjustment plates 49. The guide wheel assemblies 40 include guide wheel support bases 401 and guide wheels 402 mounted on the guide wheel support bases 401. By adjusting the position of the adjustment plates 49, it can accommodate metal strips of different widths. The servo motor can automatically control the feeding length according to demand.

[0047] like Figure 2 、 Figure 4 、 Figure 7 and Figure 8 As shown, the clamping device 5 includes a first clamping plate 51, a first guide rod 52, a second clamping plate 53, a first cylinder 54 and a first linear bearing 55. The second clamping plate 53 corresponds to the first clamping plate 51 in upper and lower directions and cooperates with each other. The first guide rod 52 is vertically mounted on the first clamping plate 51. The first cylinder 54 and the first linear bearing 55 are respectively mounted on the second clamping plate 53. The first guide rod 52 moves through the first linear bearing 55. The cylinder telescopic rod of the first cylinder 54 extends downward and connects to the first clamping plate 51. Under the driving action of the first cylinder 54, the second clamping plate 53 can move up and down, thereby achieving a clamping or loosening action. The clamping device 5 also includes a clamping device support seat 56. The first clamping plate 51 is mounted on the clamping device support seat 56. The first guide rod 52, the first cylinder 54 and the first linear bearing 55 are provided in two groups, one of which is close to the front end of the first clamping plate 51 or the second clamping plate 53, and the other is close to the rear end of the first clamping plate 51 and the second clamping plate 53.

[0048] like Figure 2 、 Figure 4 、 Figure 9 and Figure 10As shown, the pulling device 6 includes a linear transmission module 61, a linear guide 62, a sliding block 63, a third splint 64, a second guide rod 65, a fourth splint 66, a second cylinder 67 and a second linear bearing 68; the linear transmission module 61 is installed on the rear side of the needle plate assembly 7, the linear guide 62 is installed on the front side of the needle plate assembly 7, the sliding block 63 is installed on the linear guide rail 62, one end of the third splint 64 is connected to the linear transmission module 61, and the other end of the third splint 64 is connected to the sliding block 63; the fourth splint 66 corresponds to the third splint 64 up and down and cooperates with each other, the second guide rod 65 is vertically installed on the third splint 64, the second cylinder 67 and the second linear bearing 68 are respectively installed on the fourth splint 66, the second guide rod 65 moves through the second linear bearing 68, and the cylinder telescopic rod of the second cylinder 67 extends downward and connects the third splint 64. Under the driving action of the second cylinder 67, the fourth clamping plate 66 can move up and down, thereby realizing the clamping or loosening action; under the driving action of the linear transmission module 61, it can drive the sliding block 63, the third clamping plate 64, the second guide rod 65, the fourth clamping plate 66, the second cylinder 67 and the second linear bearing 68 to move left and right at the same time, thereby achieving the purpose of pulling the material.

[0049] like Figure 2 、 Figure 4 、 Figure 9 and Figure 10 As shown, the second guide rod 65, the second cylinder 67 and the second linear bearing 68 are provided in two groups, one group is close to the front end of the third clamping plate 64 or the fourth clamping plate 66, and the other group is close to the rear end of the third clamping plate 64 and the fourth clamping plate 66. The linear transmission module 61 includes a module base body 611, a module guide plate 612, a module translation block 613, a screw rod 614, a screw nut 615 and a screw motor 616. The two ends of the module guide plate 612 are installed on the module base body 611. There is a gap between the module guide plate 612 and the module base body 611. The screw rod 614 is located in the gap between the module guide plate 612 and the module base body 611, and the two ends of the screw rod 614 are rotatably installed on the module base body 611; the screw nut 615 is installed on the screw rod 614 and is threadedly matched with the screw rod 614. The screw motor 616 is installed on one end of the module base body 611, and the screw motor 616 can drive the screw rod 614 to rotate; the module translation block 613 is slidably installed on the module guide plate 612, and the lower end of the module translation block 613 is connected to the screw nut 615.

[0050] like Figure 2 、 Figure 4 、 Figure 11 and Figure 12As shown, the needle plate lifting device 71 of the needle plate assembly 7 includes several third cylinders 711 and a needle plate mounting bracket 712. The telescopic rods of the third cylinders 711 extend upward and connect to the needle plate 72 positioning bracket. The needle plate 72 is mounted on the needle plate mounting bracket 712. The needle plates 72 are arranged in a plurality of rows, with gaps between adjacent needle plates 72 for dust to fall through. The upper ends of the needle plates 72 are provided with serrations to support the metal strip 100 and minimize laser cutting damage to the needle plates 72. The needle plates 72 and the needle plate mounting bracket 712 are mounted in a manner that facilitates their removal and replacement. Driven by the third cylinders 711, the needle plate mounting bracket 712 can move up and down, thereby raising or lowering the needle plate 72.

[0051] like Figure 2 、 Figure 4 、 Figure 11 and Figure 12 As shown, the needle plate lifting device 71 of the needle plate assembly 7 also includes a front support plate 713, a rear support plate 714, a third guide rod 715 and a third linear bearing 716, two third cylinders 711 are respectively installed on the front support plate 713 and the rear support plate 714, and two needle plate fixing frames 712 are provided, one of which corresponds to the position of the front support plate 713 up and down, and the other needle plate fixing frame 712 corresponds to the position of the rear support plate 714 up and down; two third guide rods 715 are tightly installed on the lower side of the needle plate fixing frame 712, two third linear bearings 716 are respectively installed on the front support plate 713 and the rear support plate 714, and the third guide rod 715 moves through the corresponding third linear bearings 716.

[0052] like Figure 2 、 Figure 4 and Figure 13As shown, the laser cutting device 8 includes a left X-axis transmission device 81, a right X-axis transmission device 82, a Y-axis transmission device 83, a Z-axis transmission device 84 and a laser cutting head 85. The X-axis transmission device is installed on the left end of the frame 2, the right X-axis transmission device 82 is installed on the right end of the frame 2, both ends of the Y-axis transmission device 83 are installed on the left X-axis transmission device 81 and the right X-axis transmission device 82, the Z-axis transmission device 84 is installed on the Y-axis transmission device 83, and the laser cutting head 85 is installed on the Z-axis transmission device 84. The left and right X-axis transmission devices 81 and 82 are each mounted with an X-axis guide rail 811, on which an X-axis linear motor 812 is mounted. Both ends of the Y-axis transmission device 83 are mounted on corresponding X-axis linear motors 812. A Y-axis guide rail 831 is mounted on the Y-axis transmission device 83, on which a Y-axis linear motor 832 is mounted. The Z-axis transmission device 84 is mounted on the Y-axis linear motor 832 and is a lead screw transmission mechanism. The laser cutting device 8 adopts a gantry-type structure, which is compatible with a wider range of products and has a more stable structure.

[0053] The above description is only a preferred embodiment of the present invention. Any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical solution of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A metal coil precision laser cutting machine, characterized by: It includes a coil unloading rack and a frame, a workbench is provided on the frame, and a servo feeding device, a clamping device, a pulling device, a needle plate assembly and a laser cutting device are installed on the workbench; the coil unloading rack is arranged on one side of the frame, for placing the rolled metal strip and supplying the metal strip to the servo feeding device; the servo feeding device is used to transfer the metal strip to the working position of the clamping device and the pulling device; the pulling device is used to clamp the end of the metal strip and pull the metal strip from one side of the needle plate assembly to the other side of the needle plate assembly, the clamping device is located on one side of the needle plate assembly, and the clamping device is used to clamp the metal strip after the pulling device pulls the material into place; the needle plate assembly includes a needle plate lifting device and a needle plate installed on the needle plate lifting device, and the needle plate lifting device is used to drive the needle plate to rise and fall; the laser cutting device is used to laser cut the metal strip on the needle plate assembly.

2. The metal coil precision laser cutting machine according to claim 1, characterized in that: The workbench is a marble workbench, which is provided with a cavity that passes through from top to bottom. The needle plate assembly is located at the upper end of the cavity. The lower end of the frame is provided with a material receiving frame, which is located below the cavity.

3. The metal coil precision laser cutting machine according to claim 1, characterized in that: The servo feeding device includes a base plate, two active roller support seats, a servo motor, a coupling, an active roller, two pressure roller adjustment mechanisms and a pressure roller; the two active roller support seats are respectively installed on the base plate, the servo motor is installed on the side of an active roller support seat, the active roller is rotatably installed between the lower ends of the two active roller support seats, the coupling is connected between the motor shaft of the servo motor and one end of the active roller, the two pressure roller adjustment mechanisms are installed at the upper ends of the corresponding active roller support seats, the two ends of the pressure roller are rotatably installed between the two pressure roller adjustment mechanisms, and the pressure roller and the active roller correspond to each other up and down and are tightly fitted with each other.

4. The metal coil precision laser cutting machine according to claim 3, characterized in that: A plurality of follower roller assemblies are installed at intervals on the base plate, and the follower roller assembly includes a follower roller support seat and a follower roller installed on the follower roller support seat; the servo feeding device also includes two adjustment plates, and the two adjustment plates are respectively installed on the front and rear ends of the base plate, and the distance between the two adjustment plates can be adjusted. A plurality of guide wheel assemblies are installed at intervals on the adjustment plate, and the guide wheel assembly includes a guide wheel support seat and a guide wheel installed on the guide wheel support seat.

5. The metal coil precision laser cutting machine according to claim 1, characterized in that: The clamping device includes a first clamping plate, a first guide rod, a second clamping plate, a first cylinder and a first linear bearing. The second clamping plate corresponds to the first clamping plate up and down and cooperates with each other. The first guide rod is vertically installed on the first clamping plate. The first cylinder and the first linear bearing are respectively installed on the second clamping plate. The first guide rod moves through the first linear bearing. The cylinder telescopic rod of the first cylinder extends downward and connects to the first clamping plate.

6. The metal coil precision laser cutting machine according to claim 1, characterized in that: The pulling device includes a linear transmission module, a linear guide rail, a sliding block, a third splint, a second guide rod, a fourth splint, a second cylinder and a second linear bearing; the linear transmission module is installed on the rear side of the needle plate assembly, the linear guide rail is installed on the front side of the needle plate assembly, the sliding block is installed on the linear guide rail, one end of the third splint is connected to the linear transmission module, and the other end of the third splint is connected to the sliding block; the fourth splint corresponds to the third splint up and down and cooperates with each other, the second guide rod is vertically installed on the third splint, the second cylinder and the second linear bearing are respectively installed on the fourth splint, the second guide rod moves through the second linear bearing, and the cylinder telescopic rod of the second cylinder extends downward and connects the third splint.

7. The metal coil precision laser cutting machine according to claim 6, characterized in that: The linear transmission module includes a module base, a module guide plate, a module translation block, a screw, a screw nut and a screw motor. The two ends of the module guide plate are mounted on the module base, and a gap is formed between the module guide plate and the module base. The screw is located in the gap between the module guide plate and the module base, and the two ends of the screw are rotatably mounted on the module base. The screw nut is mounted on the screw and is threadedly engaged with the screw. The screw motor is mounted on one end of the module base, and the screw motor can drive the screw to rotate. The module translation block is slidably mounted on the module guide plate, and the lower end of the module translation block is connected to the lead screw nut.

8. The metal coil precision laser cutting machine according to claim 1, characterized in that: The needle plate lifting device of the needle plate assembly includes several third cylinders and a needle plate fixing frame, the cylinder telescopic rod of the third cylinder extends upward and is connected to the needle plate positioning frame, and the needle plate is installed on the needle plate fixing frame; the needle plate lifting device of the needle plate assembly also includes a front support plate, a rear support plate, a third guide rod and a third linear bearing, and two third cylinders are respectively installed on the front support plate and the rear support plate, and the needle plate fixing frame is provided with two, one of the needle plate fixing frames corresponds to the position of the front support plate up and down, and the other needle plate fixing frame corresponds to the position of the rear support plate up and down; two third guide rods are tightly installed on the lower side of the needle plate fixing frame, and two third linear bearings are respectively installed on the front support plate and the rear support plate, and the third guide rods move through the corresponding third linear bearings.

9. The metal coil precision laser cutting machine according to claim 1, characterized in that: The laser cutting device includes a left X-axis transmission device, a right X-axis transmission device, a Y-axis transmission device, a Z-axis transmission device and a laser cutting head. The X-axis transmission device is installed on the left end of the frame, the right X-axis transmission device is installed on the right end of the frame, both ends of the Y-axis transmission device are installed on the left X-axis transmission device and the right X-axis transmission device, the Z-axis transmission device is installed on the Y-axis transmission device, and the laser cutting head is installed on the Z-axis transmission device.

10. The metal coil precision laser cutting machine according to claim 9, characterized in that: The left X-axis transmission device and the right X-axis transmission device are respectively installed with X-axis guide rails, and the X-axis linear motor is installed on the X-axis guide rails. Both ends of the Y-axis transmission device are installed on the corresponding X-axis linear motors, and the Y-axis transmission device is installed with Y-axis guide rails, and the Y-axis linear motor is installed on the Y-axis guide rails. The Z-axis transmission device is installed on the Y-axis linear motor, and the Z-axis transmission device is a screw transmission mechanism.

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