Feeding system of precise laser cutting machine for coil stock

Abstract

The utility model discloses a feeding system of a coil stock precise laser cutting machine. The feeding system comprises a workbench, a servo feeding device, a clamping device, a pulling device and a needle plate assembly, wherein the servo feeding device, the clamping device, the pulling device and the needle plate assembly are installed on the workbench. 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 belt and pulling the material belt 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 belt 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 clamping device comprises a first clamping plate, a second clamping plate and a first cylinder; the material pulling device comprises a linear transmission module, a linear guide rail, a sliding block, a third clamping plate, a fourth clamping plate and a second air cylinder. 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, and the material belt is high in positioning stability and flatness.

Description

Technical Field

[0001] This utility model relates to the field of laser cutting equipment technology, and in particular to a feeding system for a precision laser cutting machine for roll materials. Background Technology

[0002] Laser cutting uses a laser beam instead of a traditional mechanical blade, offering advantages such as high precision, fast cutting speed, no limitation on cutting patterns, smooth cuts, and low processing costs. Laser cutting requires a laser cutting machine. Currently, certain metal sheets need to be cut into specific shapes using laser cutting machines, and these sheets are typically in the form of rolled strips. However, current laser cutting machines struggle to simultaneously perform tasks such as strip feeding, leveling, clamping, and supporting, making it difficult to guarantee the precision of laser cutting rolled materials.

[0003] Referring to Chinese patent document CN218836493U, a fully automatic roll material rapid slicing laser cutting device is disclosed, including a machine stand, a roll material unloading rack, a front guide rack, a material pulling mechanism, a laser cutting component, a dicing mechanism, a receiving mechanism, a receiving bin, a cutting platform, and a transfer rack. The roll material unloading rack is located on the front side of the machine stand, and the front guide rack, cutting platform, and receiving bin are sequentially arranged on the machine stand. The material pulling mechanism includes a material pulling support frame, a pressing cylinder, and a pressing rubber roller. The pressing cylinder is mounted on the material pulling support frame, and its telescopic end is connected to the pressing rubber roller to press down, abutting against the lower rubber roller arranged on the machine stand, thereby achieving the compression of the roll material and thus pulling it. The laser cutting component is located above the cutting platform, and the receiving mechanism is located above the receiving bin. Pulling mechanisms are provided at both ends of the cutting platform and at the front end of the receiving bin to assist in pulling and feeding the roll material. This patent document can realize the functions of roll material conveying, cutting, dicing, and receiving.

[0004] However, the Chinese patent document CN218836493U also has the following technical defects: (1) The laser cutting equipment relies solely on the material pulling mechanism to convey the material strip, making it difficult to smoothly unfold the material strip onto the cutting platform, thus affecting 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, resulting in jamming and further reducing the flatness of the material strip; (3) The laser cutting equipment relies on the vacuum adsorption of the cutting platform to fix the material strip. This method is often only suitable for vacuum adsorption of relatively thin film-shaped material strips. For thicker metal material strips, it is often difficult to adsorb them. Furthermore, during the laser cutting process, the laser cutting head can easily cut and damage the vacuum adsorption cutting platform. 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 apply to the laser cutting of metal material strips. Utility Model Content

[0005] The technical problem this invention aims to solve is to address the shortcomings of the prior art by providing a feeding system for a precision laser cutting machine for roll materials. During the conveying of the material strip by the servo feeding device, this system utilizes a pulling device to clamp the end of the material strip and pull it from one side of the needle plate assembly to the other, allowing the material strip to unfold smoothly onto the needle plate assembly. During the pulling process, the needle plate lifting device of the needle plate assembly drives the needle plate downwards, preventing needle plate interference from affecting the conveying and pulling of the material strip and avoiding feeding jams. This feeding system utilizes the pulling device and clamping device to clamp and position the material strip on both sides of the needle plate assembly, while the needle plate lifting device drives the needle plate upwards to support the material strip, ensuring high positioning stability and flatness, thus guaranteeing high precision in laser cutting. The feeding system uses a needle plate to support the material strip; the needle plate is easy to replace and difficult to damage by laser cutting, and the dust generated during laser cutting can fall down from the gaps between the needle plates.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: a feeding system for a precision laser cutting machine for roll materials, including a worktable and a servo feeding device, a clamping device, a pulling device, and a needle plate assembly mounted on the worktable; the servo feeding device is used to convey the roll material to the working positions of the clamping device and the pulling device; the pulling device is used to clamp the end of the material strip and pull the material 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 is used to clamp the material strip after the pulling device pulls it into position; the clamping device includes a first clamping plate, a second clamping plate, and a first cylinder; the second clamping plate corresponds to and cooperates with the first clamping plate; the first cylinder is mounted on the second clamping plate. The cylinder extension rod extends downward and connects to the first clamping plate; the material pulling device includes a linear transmission module, a linear guide rail, a sliding block, a third clamping plate, a fourth clamping plate, and a second cylinder; 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 clamping plate is connected to the linear transmission module, and the other end of the third clamping plate is connected to the sliding block; the fourth clamping plate corresponds to and cooperates with the third clamping plate, the second cylinder is installed on the fourth clamping plate, and the cylinder extension rod of the second cylinder extends downward and connects to the third clamping plate; 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 being used to drive the needle plate to lift.

[0007] 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 one 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 on the upper ends of the corresponding active roller support seats, and the two ends of the pressure roller are rotatably installed between the two pressure roller adjustment mechanisms. The pressure roller and the active roller are vertically aligned and mutually press against each other.

[0008] In the above technical solution, the upper end of the active roller support is provided with a support groove. The pressure roller adjustment mechanism includes an adjusting slider, an adjusting screw mounting plate, an adjusting screw, a pressure rod, a pressure rod handle, and a spring. The end of the pressure roller is rotatably mounted in the adjusting slider. The adjusting slider is slidably mounted within the support groove. The adjusting screw mounting plate is mounted on the top of the active roller support. The adjusting screw is mounted on the adjusting screw mounting plate. The pressure rod passes vertically through the adjusting screw mounting plate and is threadedly engaged with the adjusting screw. The pressure rod handle is mounted on the upper end of the pressure rod. The lower end of the pressure rod is rotatably connected to the adjusting slider. The spring is installed between the adjusting slider and the adjusting screw mounting plate. The active roller support and the adjusting slider are respectively mounted on bearings. The two ends of the active roller and the pressure roller are respectively mounted in corresponding bearings. A motor mount is provided on the side of the active roller support, and the servo motor is mounted on the motor mount.

[0009] In the above technical solution, a number of follower roller assemblies are installed at intervals on the base plate. The follower roller assembly includes a follower roller support seat and a follower roller installed on the follower roller support seat.

[0010] In the above technical solution, the servo feeding device further includes two adjusting plates, which are respectively installed on the front and rear ends of the base plate. The distance between the two adjusting plates can be adjusted. Several guide wheel assemblies are installed on the adjusting plates at intervals. The guide wheel assembly includes a guide wheel support seat and a guide wheel installed on the guide wheel support seat.

[0011] In the above technical solution, the clamping device further includes a first guide rod, a first linear bearing, and a clamping device support base. The first guide rod is vertically mounted on the first clamping plate, and the first linear bearing is respectively mounted on the second clamping plate. The first guide rod moves through the first linear bearing. The first clamping plate is mounted on the clamping device support base. The first guide rod, the first cylinder, and the first linear bearing are provided in two sets, one set near the front end of the first clamping plate or the second clamping plate, and the other set near the rear end of the first clamping plate and the second clamping plate.

[0012] In the above technical solution, the material pulling device further includes a second guide rod and a second linear bearing. The second guide rod is vertically installed on the third clamping plate, and the second linear bearing is installed on the fourth clamping plate. The second guide rod moves through the second linear bearing. There are two sets of the second guide rod, the second cylinder, and the second linear bearing. One set is close to the front end of the third clamping plate or the fourth clamping plate, and the other set is close to the rear end of the third clamping plate and the fourth clamping plate.

[0013] In the above technical solution, the linear transmission module includes a module base, a module guide plate, a module translation block, a lead screw, a lead screw nut, and a lead screw motor. The two ends of the module guide plate are mounted on the module base, with a gap between the module guide plate and the module base. The lead screw is located within the gap between the module guide plate and the module base, and both ends of the lead screw are rotatably mounted on the module base. The lead screw nut is mounted on the lead screw and engages with it via a threaded transmission. The lead screw motor is mounted on one end of the module base and can drive the lead screw to rotate. The module translation block is slidably mounted on the module guide plate, and its lower end is connected to the lead screw nut.

[0014] 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 extension rod of the third cylinder extends upward and connects to the needle plate positioning frame. The needle plate is installed on the needle plate fixing frame. The needle plate lifting device also includes a front support plate, a rear support plate, a third guide rod, and a third linear bearing. Two third cylinders are respectively installed on the front support plate and the rear support plate. There are two needle plate fixing frames, one of which corresponds vertically to the front support plate and the other corresponds vertically to the rear support plate. Two third guide rods are vertically installed on the lower side of the needle plate fixing frame. Two third linear bearings are respectively installed on the front support plate and the rear support plate. The third guide rods move through the corresponding third linear bearings.

[0015] The beneficial effects of this utility model are: (1) This utility model is provided with a servo feeding device and a pulling device. During the conveying process of the material belt, the servo feeding device can use the pulling device to clamp the end of the material belt and pull the material belt from one side of the needle plate assembly to the other side of the needle plate assembly, so that the material belt can be spread flat on the needle plate assembly; (2) Since the needle plate assembly of this utility model 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 pulling device of this utility model can drive the needle plate to descend during the pulling process, avoiding the needle plate interference affecting the conveying and pulling of the material belt. (3) Since a clamping device is set on one side of the needle plate assembly, the clamping device is used to clamp the material strip after the pulling device pulls the material into place. Therefore, the present invention can use the pulling device and the clamping device to clamp and position the material strip together on both sides of the needle plate assembly. At the same time, the needle plate lifting device of the needle plate assembly can drive the needle plate to rise and support the material strip, so that the material strip has high positioning stability and high flatness, ensuring the high precision of laser cutting. (4) The present invention uses a needle plate to support the material strip. The needle plate is easy to replace and is difficult to be damaged by laser cutting. The dust generated by laser cutting can fall down from the gap of the needle plate. Attached Figure Description

[0016] Figure 1 This is a 3D structural diagram of the feeding system of a precision laser cutting machine for coil materials.

[0017] Figure 2 This is a 3D structural diagram of the servo feeding device.

[0018] Figure 3 This is a three-dimensional structural diagram of the drive roller support, servo motor, coupling, drive roller, pressure roller adjustment mechanism, and pressure roller.

[0019] Figure 4 This is a three-dimensional structural diagram of the clamping device.

[0020] Figure 5 This is a diagram showing the distributed structure of the clamping device.

[0021] Figure 6 This is a three-dimensional structural diagram of the material pulling device.

[0022] Figure 7 This is a diagram showing the dispersed structure of the material pulling device.

[0023] Figure 8 This is one of the three-dimensional structural diagrams of the needle plate assembly.

[0024] Figure 9 This is the second three-dimensional structural diagram of the needle plate assembly.

[0025] Figure 10This is a schematic diagram of a roll of material passing through a servo feeding device, a clamping device, and a pulling device. Detailed Implementation

[0026] The structural and working principles of this utility model will be further described in detail below with reference to the accompanying drawings.

[0027] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. The terms "X-axis," "Y-axis," and "Z-axis" refer to the movement direction of the laser cutting head and are only used for the convenience of describing this utility model and simplifying the description, and should not be construed as limiting the utility model.

[0028] like Figures 1-10 As shown, this utility model is a feeding system for a precision laser cutting machine for roll materials, including a roll material unloading rack 1 and a frame 2. 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 mounted on the frame 2. An outer cover 3 is also provided on the frame, covering the servo feeding device 4, clamping device 5, pulling device 6, needle plate assembly 7, and laser cutting device 8. A computer control device 31 is installed outside the outer cover 3. The roll material unloading rack 1 is located on one side of the frame 2 and is used to hold the rolled material strip 100 and supply the material strip 100 to the servo feeding device 4. The servo feeding device 4... The device is used to convey the strip 100 to the working position of the clamping device 5 and the pulling device 6; the pulling device 6 is used to clamp the end of the strip 100 and pull the 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 strip 100 after the pulling device 6 pulls the strip 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 strip 100 on the needle plate assembly 7. The rolled strip 100 of this invention is a metal strip.

[0029] like Figures 1-10As shown, this utility model is a feeding system for a precision laser cutting machine for coiled metal, used to convey a strip 100 of coiled metal. The utility model includes a worktable 21 and a servo feeding device 4, a clamping device 5, a pulling device 6, and a needle plate assembly 7 mounted on the worktable 21. The servo feeding device 4 conveys the strip 100 of coiled metal to the working positions of the clamping device 5 and the pulling device 6. The pulling device 6 clamps the end of the strip 100 and pulls the strip from one side of the needle plate assembly 7 to the other side. The clamping device 5 is located on one side of the needle plate assembly 7 and clamps the strip 100 after the pulling device 6 pulls it into position. The clamping device 5 includes a first clamping plate 51, a second clamping plate 53, and a first cylinder 54. The second clamping plate 53 corresponds vertically to and cooperates with the first clamping plate 51. The first cylinder 54 is mounted on the second clamping plate 53. The telescopic rod extends downward and connects to the first clamping plate 51; the material pulling device 6 includes a linear transmission module 61, a linear guide rail 62, a sliding block 63, a third clamping plate 64, a fourth clamping plate 66, and a second cylinder 67; the linear transmission module 61 is installed on the rear side of the needle plate assembly 7, the linear guide rail 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 clamping plate 64 is connected to the linear transmission module 61, and the other end of the third clamping plate 64 is connected to the sliding block 63; the fourth clamping plate 66 corresponds to and cooperates with the third clamping plate 64, the second cylinder 67 is installed on the fourth clamping plate 66, and the cylinder telescopic rod of the second cylinder 67 extends downward and connects to the third clamping plate 64; the needle plate assembly 7 includes a needle plate lifting device 71 and a needle plate 72 installed 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.

[0030] The feeding method of the feeding system of the precision laser cutting machine for coiled materials of this utility model includes the following steps: First, the feeding system of the precision laser cutting machine for coiled materials is in an unstarted state. The operator places the coiled material strip 100 on the coil unloading rack 1 and passes the material strip 100 sequentially through the servo feeding device 4 and the clamping device 5 to the pulling device 6. The initial working position of the pulling device 6 is located on the side close to the clamping device 5, and the end of the material strip 100 is located in the clamping position of the pulling device 6. The initial state of the clamping device 5 is the released state, and the material strip 100 can move through the clamping device 5. Then, the feeding system of the precision laser cutting machine for coiled materials is started. The needle plate lifting device 71 drives the needle plate 72 to descend. The purpose of driving the needle plate 72 to descend is to avoid the needle plate interfering with the pulling device 6 pulling the material strip 100. Next, the servo feeding device 4 and the pulling device 6 work simultaneously. The clamping device 6 clamps the end of the material strip 100 and pulls the material 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, and the material strip 100 can move through the clamping device 5. Then, after the pulling device 6 pulls the material into place, the servo feeding device 4 stops working, and the clamping device 5 clamps the material strip 100. At this time, the pulling device 6 and the clamping device 5 together position the material strip 100. Next, the needle plate lifting device 71 drives the needle plate 72 to rise, supporting the material strip 100. The laser cutting machine laser cuts the material strip 100 on the needle plate assembly 7. The laser-cut product is removed by a human hand or robot arm, and the ash and residue after laser cutting fall down from the gap of the needle plate 72. Finally, after the laser cutting is completed, the needle plate lifting device 71 drives the needle plate 72 to fall, the pulling device 6 returns to the initial working position, and the clamping device 5 is in a loose state.

[0031] During the conveying of the material belt 100, the servo feeding device 4 of this invention can use the pulling device 6 to clamp the end of the material belt and pull it from one side of the needle plate assembly 7 to the other side, so that the material belt can be smoothly unfolded onto the needle plate assembly 7. During the pulling process, the needle plate lifting device 71 of the needle plate assembly 7 can drive the needle plate 72 to descend, avoiding interference from the needle plate 72 to affect the conveying and pulling of the material belt, and avoiding the problem of feeding jamming. This invention can... The material pulling device 6 and the clamping device 5 work together on both sides of the needle plate assembly 7 to clamp and position the material strip 100. At the same time, the needle plate lifting device 71 of the needle plate assembly 7 can drive the needle plate 72 to rise and support the material strip, so that the material strip has high positioning stability and high flatness, ensuring the high precision of laser cutting. This utility model uses the needle plate 72 to support the material strip. The needle plate 72 is easy to replace and is not easily damaged by laser cutting. Moreover, the dust generated during the laser cutting process can fall down from the gap of the needle plate 72, which is easy to clean.

[0032] like Figures 1-3As shown, the servo feeding device 4 includes a base plate 41, two active roller support seats 42, a servo motor 43, a coupling 44, an active roller 45, two pressure roller adjustment mechanisms 46, and a pressure 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 connects the motor shaft of the servo motor 43 to one end of the active roller 45. The two pressure roller adjustment mechanisms 46 are mounted on the upper ends of the corresponding active roller support seats 42. The two ends of the pressure roller 47 are rotatably mounted between the two pressure roller adjustment mechanisms 46. The pressure roller 47 and the active roller 45 correspond vertically and press against each other. The device is equipped with a guide wheel assembly 2 to effectively prevent the material from deviating. The surfaces of the upper and lower pressure rollers are coated with silicone to prevent damage to the material strip. Under the action of the clamping roller adjustment mechanism 46, the clamping roller 47 can be adjusted up and down, which can be used for metal strips of different thicknesses and control different clamping forces. Under the action of the servo motor 43, the drive roller 45 can be driven to rotate. The drive roller 45 and the clamping roller 47 together clamp the metal strip and transmit the metal strip. The surfaces of the drive roller 45 and the clamping roller 47 are covered with a silicone layer to prevent damage to the strip.

[0033] like Figure 2 and Figure 3 As shown, the upper end of the active roller support 42 is provided with a support groove 421. 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. The adjusting slider 461 is slidably mounted in the support groove 421. The adjusting screw mounting plate 462 is mounted on the top of the active roller support 42. The adjusting screw 463 is mounted on the adjusting screw mounting plate 462. The pressure rod 464 passes vertically through the adjusting screw mounting plate 462 and is threadedly engaged with the adjusting screw 463. The pressure rod handle 465 is mounted on the upper end of the pressure rod 464. The lower end of the pressure rod 464 is rotatably connected to the adjusting slider 461. The spring 466 is installed between the adjusting slider 461 and the adjusting screw mounting plate 462. Rotating the clamping handle 465 causes the pressure rod 464 to rise or fall, which in turn drives the adjusting slider 461 to rise or fall, and finally the adjusting slider 461 drives the clamping roller 47 to rise or fall. Bearings are installed on the active roller support 42 and the adjusting slider 461 respectively. The two ends of the active roller 45 and the clamping roller 47 are respectively installed in corresponding bearings. A motor mount 422 is provided on the side of the active roller support 42, and the servo motor 43 is mounted on the motor mount 422.

[0034] like Figure 1 and Figure 2 As shown, a plurality of follower roller assemblies 48 are installed at intervals on the base plate 41. Each follower roller assembly 48 includes a follower roller support 481 and a follower roller 482 mounted on the follower roller support 481. During the conveying process, the material belt 100 can pass over each follower roller assembly 48.

[0035] like Figure 1 and Figure 2 As shown, the servo feeding device 4 also includes two adjusting plates 49, which are respectively installed on the front and rear ends of the base plate 41. The distance between the two adjusting plates 49 is adjustable. Several guide wheel assemblies 40 are installed at intervals on the adjusting plates 49. Each guide wheel assembly 40 includes a guide wheel support 401 and a guide wheel 402 installed on the guide wheel support 401. By adjusting the position of the adjusting plates 49, it can be adapted to material strips of different widths, and the servo motor can automatically control the feeding length as needed.

[0036] like Figure 1 , Figure 4 and Figure 5 As shown, the clamping device 5 further includes a first guide rod 52, a first linear bearing 55, and a clamping device support 56. The first guide rod 52 is vertically mounted on the first clamping plate 51, and the first linear bearing 55 is mounted on the second clamping plate 53. The first guide rod 52 moves through the first linear bearing 55. The first clamping plate 51 is mounted on the clamping device support 56. The first guide rod 52, the first cylinder 54, and the first linear bearing 55 are arranged in two sets, one set near the front end of the first clamping plate 51 or the second clamping plate 53, and the other set near the rear end of the first clamping plate 51 and the second clamping plate 53. Under the driving action of the first cylinder 54, the second clamping plate 53 can move up and down, thereby realizing the clamping or releasing action.

[0037] like Figure 1 , Figure 6 and Figure 7As shown, the material pulling device 6 further includes a second guide rod 65 and a second linear bearing 68. The second guide rod 65 is vertically mounted on the third clamping plate 64, and the second linear bearing 68 is mounted on the fourth clamping plate 66. The second guide rod 65 moves through the second linear bearing 68. Two sets of the second guide rod 68, the second cylinder 67, and the second linear bearing 68 are provided, one set near the front end of the third clamping plate 64 or the fourth clamping plate 66, and the other set near the rear end of the third clamping plate 64 and the fourth clamping plate 66. Under the driving action of the second cylinder 67, the fourth clamping plate 66 can move up and down, thereby achieving clamping or releasing actions. Under the driving action of the linear transmission module 61, 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 can move left and right simultaneously, thereby achieving the purpose of material pulling.

[0038] like Figure 6 and Figure 7 As shown, the linear transmission module 61 includes a module base 611, a module guide plate 612, a module translation block 613, a lead screw 614, a lead screw nut 615, and a lead screw motor 616. The two ends of the module guide plate 612 are mounted on the module base 611, and there is a gap between the module guide plate 612 and the module base 611. The lead screw 614 is located within the gap between the module guide plate 612 and the module base 611. Both ends of 14 are rotatably mounted on the module base 611; the lead screw nut 615 is mounted on the lead screw 614 and is threadedly driven to engage with the lead screw 614; the lead screw motor 616 is mounted on one end of the module base 611 and can drive the lead screw 614 to rotate; the module translation block 613 is slidably mounted on the module guide plate 612, and the lower end of the module translation block 613 is connected to the lead screw nut 615.

[0039] like Figure 1 , Figure 8 and Figure 9As shown, the needle plate lifting device 71 of the needle plate assembly 7 includes several third cylinders 711 and a needle plate fixing frame 712. The cylinder extension rod of the third cylinder 711 extends upward and connects to the needle plate 72 positioning frame. The needle plate 72 is mounted on the needle plate fixing frame 712. Multiple needle plates 72 are arranged, with gaps between adjacent needle plates 72 for the falling dust. The upper end of the needle plate 72 is serrated to facilitate support of the material belt 100 and to minimize laser cutting of the needle plate 72. The installation method of the needle plate 72 and the needle plate fixing frame 712 should facilitate the disassembly and replacement of the needle plate 72. Under the driving action of the third cylinders 711, the needle plate fixing frame 712 can move up and down, thereby realizing the raising or lowering of the needle plate 72. The needle plate lifting device 71 of the needle plate assembly 7 further 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. Two needle plate fixing frames 712 are provided, one of which corresponds vertically to the front support plate 713, and the other corresponds vertically to the rear support plate 714. Two third guide rods 715 are vertically 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. The third guide rods 715 move through the corresponding third linear bearings 716.

[0040] The above description is merely a preferred embodiment of this utility model. Any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical solution of this utility model shall fall within the scope of the technical solution of this utility model.

Claims

1. A feeding system for a precision laser cutting machine for roll materials, characterized in that: The system includes a worktable and a servo feeding device, a clamping device, a pulling device, and a needle plate assembly mounted on the worktable. The servo feeding device conveys the rolled material to the working positions of the clamping device and the pulling device. The pulling device clamps the end of the material and pulls it from one side of the needle plate assembly to the other side. The clamping device is located on one side of the needle plate assembly and clamps the material after the pulling device has pulled it into position. The clamping device includes a first clamping plate, a second clamping plate, and a first cylinder. The second clamping plate corresponds to and cooperates with the first clamping plate. The first cylinder is mounted on the second clamping plate, and its extension rod extends downward and connects to the first clamping plate. The feeding device includes a linear drive module, a linear guide rail, a sliding block, a third clamping plate, a fourth clamping plate, and a second cylinder. The linear drive 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 clamping plate is connected to the linear drive module, and the other end of the third clamping plate is connected to the sliding block. The fourth clamping plate corresponds to and cooperates with the third clamping plate. The second cylinder is installed on the fourth clamping plate, and the cylinder extension rod of the second cylinder extends downward and connects to the third clamping plate. 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 lift.

2. The feeding system of the precision laser cutting machine for roll materials 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 one active roller support seat. The active roller is rotatably installed between the lower ends of the two active roller support seats. The coupling connects the motor shaft of the servo motor to one end of the active roller. The two pressure roller adjustment mechanisms are installed on 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. The pressure roller and the active roller are vertically aligned and mutually press against each other.

3. The feeding system of the precision laser cutting machine for roll materials according to claim 2, characterized in that: The upper end of the active roller support is provided with a support groove. The pressure roller adjustment mechanism includes an adjusting slider, an adjusting screw mounting plate, an adjusting screw, a pressure rod, a pressure rod handle, and a spring. The end of the pressure roller is rotatably mounted in the adjusting slider. The adjusting slider is slidably mounted in the support groove. The adjusting screw mounting plate is mounted on the top of the active roller support. The adjusting screw is mounted on the adjusting screw mounting plate. The pressure rod passes vertically through the adjusting screw mounting plate and is threadedly engaged with the adjusting screw. The pressure rod handle is mounted on the upper end of the pressure rod. The lower end of the pressure rod is rotatably connected to the adjusting slider. The spring is installed between the adjusting slider and the adjusting screw mounting plate.

4. The feeding system of the precision laser cutting machine for roll materials according to claim 3, characterized in that: The active roller support and the adjusting slider are respectively mounted on the bearings. The two ends of the active roller and the pressing roller are respectively mounted in the corresponding bearings. The side of the active roller support is provided with a motor base, and the servo motor is mounted on the motor base.

5. The feeding system of the precision laser cutting machine for roll materials according to claim 2, characterized in that: Several follower roller assemblies are installed at intervals on the base plate. Each follower roller assembly includes a follower roller support and a follower roller installed on the follower roller support.

6. The feeding system of the precision laser cutting machine for roll materials according to claim 2, characterized in that: The servo feeding device also includes two adjusting plates, which are respectively installed on the front and rear ends of the base plate. The distance between the two adjusting plates can be adjusted. Several guide wheel assemblies are installed at intervals on the adjusting plates. Each guide wheel assembly includes a guide wheel support and a guide wheel installed on the guide wheel support.

7. The feeding system of the precision laser cutting machine for roll materials according to claim 1, characterized in that: The clamping device further includes a first guide rod, a first linear bearing, and a clamping device support base. The first guide rod is vertically mounted on the first clamping plate, and the first linear bearing is respectively mounted on the second clamping plate. The first guide rod moves through the first linear bearing. The first clamping plate is mounted on the clamping device support base. The first guide rod, the first cylinder, and the first linear bearing are provided in two sets, one set near the front end of the first clamping plate or the second clamping plate, and the other set near the rear end of the first clamping plate and the second clamping plate.

8. The feeding system of the precision laser cutting machine for roll materials according to claim 1, characterized in that: The material pulling device also includes a second guide rod and a second linear bearing. The second guide rod is vertically mounted on the third clamping plate, and the second linear bearing is mounted on the fourth clamping plate. The second guide rod moves through the second linear bearing. There are two sets of the second guide rod, the second cylinder, and the second linear bearing. One set is close to the front end of the third clamping plate or the fourth clamping plate, and the other set is close to the rear end of the third clamping plate and the fourth clamping plate.

9. The feeding system of the precision laser cutting machine for roll materials according to claim 8, characterized in that: The linear transmission module includes a module base, a module guide plate, a module translation block, a lead screw, a lead screw nut, and a lead screw motor. The two ends of the module guide plate are mounted on the module base, with a gap between the module guide plate and the module base. The lead screw is located within the gap between the module guide plate and the module base, and its two ends are rotatably mounted on the module base. The lead screw nut is mounted on the lead screw and engages with it via a threaded drive. The lead screw motor is mounted on one end of the module base and can drive the lead 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.

10. The feeding system of the precision laser cutting machine for roll materials 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 extension rod of the third cylinder extends upward and connects to the needle plate positioning frame. The needle plate is installed on the needle plate fixing frame. The needle plate lifting device also includes a front support plate, a rear support plate, a third guide rod, and a third linear bearing. Two third cylinders are respectively installed on the front support plate and the rear support plate. There are two needle plate fixing frames, one of which corresponds vertically to the front support plate and the other corresponds vertically to the rear support plate. Two third guide rods are vertically installed on the lower side of the needle plate fixing frame. Two third linear bearings are respectively installed on the front support plate and the rear support plate. The third guide rods move through the corresponding third linear bearings.

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