Novel thin plate laser cutting flexible production line

Abstract

The utility model relates to the technical field of optical fiber laser cutting machine equipment, and discloses a novel thin plate laser cutting flexible production line which comprises a lathe bed, and a plate streamline used for clamping and moving plates and a moving platform used for laser cutting are arranged on the lathe bed. The plate flow line comprises a conveying belt, a front centering conveying roller set, a blade assembly, a rear centering conveying roller set, a material pressing roller set and a feeding roller set which are sequentially arranged from left to right, the Y-axis transmission assembly and the X-axis transmission assembly are arranged, a bevel gear and rack meshing transmission mode is adopted, the characteristics that bevel gears and racks are meshed alternately, and operation is stable are utilized, and therefore the plate production efficiency is improved. Therefore, the problem that the positioning precision cannot meet the machining requirement in the repeated positioning process of the laser cutting head due to the meshing clearance is solved, meanwhile, compared with linear motor transmission, high production and maintenance cost can be saved, and the requirement of batch production is met.

Description

Technical Field

[0001] The utility model relates to the technical field of fiber laser cutting machines, in particular to a new type of flexible production line for thin plate laser cutting. Background Technique

[0002] In the thin plate laser flexible cutting production, the main factors affecting the processing accuracy of thin plates are the moving accuracy of the laser cutting head and the positioning accuracy during thin plate processing; when the moving components of the laser cutting head adopt a servo motor with a spur gear rack or a ball screw drive, restricted by the return clearance of the spur gear and the screw nut, its repeated positioning accuracy is low and cannot meet the requirements of precise cutting of thin plates. Although using a linear motor drive can meet the needs of the moving accuracy of the laser cutting head, in production, the linear motor is costly and has high maintenance costs, so it cannot meet the needs of mass production.

[0003] In addition, in the thin plate laser flexible cutting production, for the feeding and processing fixation of thin plates, the traditional equipment uses the method of edge blocking positioning, that is, the clamping and limiting mechanism and the thin plate use a sliding friction method for blocking and limiting. When the clamping mechanism clamps the thin plate too tightly, the friction force between the clamping mechanism and the side wall of the thin plate increases, affecting the feeding mechanism to move the thin plate. When the clamping mechanism clamps the thin plate too loosely, there is a gap between the thin plate and the clamping mechanism, resulting in an increase in the positioning error of the thin plate along the clamping direction during movement. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a new type of flexible production line for thin plate laser cutting to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A new type of flexible production line for thin plate laser cutting includes a bed body, on which there are a plate flow line for clamping and moving plates and a moving platform for laser cutting.

[0007] The plate flow line includes a conveyor belt, a front centering conveying roller group, a knife bar assembly, a rear centering conveying roller group, a pressure roller group and a feeding roller group arranged in sequence from left to right. The knife bar assembly is used as the cutting operation area, and a waste material conveying device is arranged below it. An encoder assembly is fixed on one side of the pressure roller group.

[0008] The moving platform is an X, Y, Z three-axis platform, including an X-axis transmission component fixed on both sides of the plate flow line. A Y-axis transmission component is horizontally arranged above the X-axis transmission component. A Z-axis transmission component is slidably matched on the Y-axis transmission component. A laser cutting head for cutting is fixed on the Z-axis transmission component.

[0009] The Y-axis drive assembly includes a drive component for the laser cutting head to move along the Y-axis, namely, a Y-axis helical rack, a Y-axis helical gear, and a Y-axis servo motor assembly. It also includes a crossbeam for carrying the Y-axis drive assembly. The crossbeam is fixedly connected to the sliding component of the X-axis drive assembly. The upper end surface of the crossbeam is provided with a Y-axis guide rail. A Y-axis slide plate is slidably mounted on the Y-axis guide rail through a slider. And the Y-axis servo motor assembly is installed on the Y-axis slide plate. The Y-axis helical gear is fitted to the output end of the Y-axis servo motor assembly, and the Y-axis helical gear meshes with the Y-axis helical rack fixed to the upper end surface of the crossbeam. The Z-axis drive assembly is fixed to the side of the Y-axis slide plate.

[0010] Further: The X-axis drive assembly includes a drive component for the Y-axis drive assembly to move along the X-axis, namely, an X-axis helical rack, an X-axis helical gear, and an X-axis servo motor assembly. It also includes X-axis bottom plates fixedly installed on both sides of the sheet metal flow line. X-axis guide rails are fixed on the X-axis bottom plates. An X-axis slide plate is slidably mounted on the X-axis guide rails through a slider. And the two ends of the crossbeam are respectively fixed to the X-axis slide plates of the two X-axis drive assemblies. The X-axis servo motor assembly is fixed to the X-axis slide plate. The X-axis helical gear is fitted to the output end of the X-axis servo motor assembly, and the X-axis helical gear meshes with the X-axis helical rack fixed to the X-axis bottom plate.

[0011] Further: Two X-axis anti-collision blocks for sliding limit and solid anti-collision blocks are respectively and relatively fixedly provided on the upper surfaces of the X-axis bottom plate and the crossbeam. X-axis gear clearance adjustment rings and Y-axis gear clearance adjustment rings for adjusting the clearance between the gear and the rack are respectively provided at the mating positions of the X-axis slide plate and the Y-axis slide plate with their corresponding motors. X-axis telescopic covers and Y-axis telescopic protection covers are respectively fixed at both ends of the upper surfaces of the X-axis bottom plate and the crossbeam.

[0012] Further: A first felt gear and a second felt gear for cleaning and lubrication are respectively rotatably fitted on the Y-axis slide plate and the X-axis slide plate, and the first felt gear and the second felt gear respectively mesh with the Y-axis helical rack and the X-axis helical rack.

[0013] Further: The front centering conveying roller group, the rear centering conveying roller group, and the feeding roller group are all provided with clamping mechanisms that roll and friction with the side of the sheet metal.

[0014] Further: The feeding roller group includes two arc-shaped side plates. A plurality of intermediate rollers are arranged along the arc surface between the two arc-shaped side plates. An leveling roller for feeding and pressing and primary leveling is provided above the last intermediate roller on the arc surface.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] 1. The Y-axis drive assembly and X-axis drive assembly provided by the present utility model adopt the meshing drive mode of helical gears and racks. By utilizing the characteristics of alternate meshing and stable operation of helical gears and racks, it can avoid the problem that the positioning accuracy cannot meet the processing requirements during the repeated positioning of the laser cutting head due to the use of spur gears and racks for meshing. At the same time, compared with the linear motor drive, it can save higher production and maintenance costs, thus meeting the needs of mass production.

[0017] 2. The first felt gear h and the second felt gear i provided by the present utility model are used to self-clean and lubricate the helical gears and racks of the Y-axis and X-axis, so as to maintain good transmission stability.

[0018] 3. The first clamping mechanism, the second clamping mechanism and the third clamping mechanism provided by the present utility model adjust the corresponding drive devices to clamp the side edges of the thin plate with the paired first V-groove bearings h, the second V-groove bearings c and the third V-groove bearings d. In this way, when adjusting the handwheel to clamp, the thin plate can be centered and clamped, so that the side edge of the thin plate is completely in contact with the clamping mechanism. Thus, during continuous processing of the thin plate, the positioning error along the clamping direction can be avoided, achieving higher positioning accuracy. At the same time, when the thin plate is fed, the rolling friction between the clamping device and the thin plate can reduce the friction force of the thin plate feeding, which is conducive to the feed adjustment of the pressure roller group and the encoder assembly for the thin plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 is the overall structural schematic diagram of a new type of thin plate laser cutting flexible production line of the present utility model;

[0021] Figure 2 is the structural schematic diagram of the X-axis drive assembly of the present utility model;

[0022] Figure 3 is the internal structural schematic diagram of the X-axis drive assembly of the present utility model;

[0023] Figure 4 is the structural schematic diagram of the Y-axis drive assembly of the present utility model;

[0024] Figure 5 is the internal structural schematic diagram of the Y-axis drive assembly of the present utility model;

[0025] Figure 6It is a schematic structural diagram of the front centering conveying roller group of the present utility model;

[0026] Figure 7 It is a schematic structural diagram of the rear centering conveying roller group of the present utility model;

[0027] Figure 8 It is a schematic structural diagram of the material pressing roller group of the present utility model;

[0028] Figure 9 It is a schematic structural diagram of the feeding roller group of the present utility model;

[0029] Figure 10 It is a schematic assembly diagram of the feeding roller group of the present utility model;

[0030] Figure 11 It is a schematic structural diagram of the encoder idler assembly of the present utility model;

[0031] Figure 12 It is a schematic internal structural diagram of the encoder idler assembly of the present utility model.

[0032] In the attached drawing reference numerals: 1, bed body; 2, Y-axis drive assembly; 3, conveyor belt; 4, front centering conveyor roller group; 5, rear centering conveyor roller group; 6, pressure roller group; 7, feeding roller group; 8, waste conveying device; 9, encoder assembly; 10, X-axis drive assembly; 11, tool bar assembly; 12, Z-axis drive assembly; 13, laser cutting head; 2a, cross beam; 2b, Y-axis guide rail; 2c, Y-axis telescopic protective cover; 2d, solid anti-collision block; 2e, Y-axis helical gear rack; 2f, Y-axis servo motor assembly; 2g, Y-axis slide plate; 2h, first felt anvil gear; 2i, Y-axis gear clearance adjustment ring; 2j, Y-axis helical gear; 4a, digital handwheel; 4b, bearing seat transition plate; 4c, bearing; 4d, coupling; 4e, coupling; 4f, right angle converter; 4g, first centering bottom plate; 4h, first V-groove bearing; 4i, slider; 4j, slide rail; 4k, second centering plate; 4l, front left-handed lead screw; 4m, front right-handed lead screw; 5a, support side plate; 5b, blanking cover plate; 5c, second V-groove bearing; 5d, first baffle; 5e, first linear bearing; 5f, first guide rod; 5g, first rear reverse lead screw coupling; 5h, first feed inlet baffle; 5i, first bearing seat; 5j, fixed ring; 5k, first handwheel; 5m, first left-handed lead screw; 5n, first right-handed lead screw; 6a, roller feeding wall panel; 6b, driving roller; 6d, rectangular sliding groove; 6f, U-shaped support; 6g, upper top plate; 6h, compression spring guide rod; 6i, spring; 6k, reduction motor; 6m, pressure cylinder; 7a, arc side plate; 7b, transition roller; 7c, blanking top plate; 7d, third V-groove bearing; 7e, second feed inlet baffle; 7f, second guide rod; 7g, second bearing seat; 7h, second handwheel; 7i, second fixed ring; 7j, second left-handed lead screw; 7k, second forward and reverse lead screw coupling; 7m, second right-handed lead screw; 7n, second baffle; 9a, encoder cylinder; 9b, encoder motor; 9c, outlet cylinder mounting plate; 9d, outlet cylinder slide seat; 9e, encoder roller support; 9f, encoder integrated support; 9g, synchronizer pressure roller; 9h, encoder roller mounting base frame; 9i, encoder lower pressure roller; 9j, pressure roller connecting plate; 9k, deep groove ball bearing; 9l, rectangular spring; 9m, outlet pressure roller support; 9n, encoder coupling; 10a, X-axis telescopic protective cover; 10b, X-axis helical gear rack; 10c, X-axis slide plate; 10d, X-axis gear clearance adjustment ring; 10e, X-axis servo motor assembly; 10f, X-axis anti-collision block; 10g, X-axis guide rail; 10h, X-axis helical gear; 10i, second felt gear. Detailed implementation manners

[0033] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0034] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances.

[0035] The present utility model will be further described below with reference to the accompanying drawings:

[0036] As Figures 1-12 shown, a new type of flexible production line for laser cutting of thin plates includes a bed 1. On the bed 1, there are provided a sheet material streamline for clamping and moving the sheet material and a moving platform for laser cutting.

[0037] The sheet material streamline includes a conveyor belt 3, a front centering conveyor roller group 4, a knife bar assembly 11, a rear centering conveyor roller group 5, a pressure roller group 6, and a feeding roller group 7 arranged in sequence from left to right. The knife bar assembly 11 serves as the cutting operation area, and a waste conveying device 8 is provided below it. An encoder assembly 9 is fixed on one side of the pressure roller group 6. The thin plate is loaded at the feeding roller group 7 and passes through the feeding roller group 7, the pressure roller group 6, the rear centering conveyor roller group 5, the knife bar assembly 11, the front centering conveyor roller group 4, and the conveyor belt 3 in sequence. The pressure roller group 6 controls the feeding of the thin plate, and the encoder assembly 9 regulates the feeding accuracy. When the thin plate moves to the knife bar assembly 11, cutting processing is performed. After the processing is completed, the thin plate moves to the conveyor belt 3 for discharging, and the waste generated by cutting falls from the knife bar assembly 11 to the waste conveying device 8 for discharging.

[0038] The mobile platform is an X, Y, Z three-axis platform, including an X-axis drive assembly 10 fixed on both sides of the sheet metal streamline. A Y-axis drive assembly 2 is horizontally arranged above the X-axis drive assembly 10. A Z-axis drive assembly 12 is slidably fitted on the Y-axis drive assembly 2. A laser cutting head 13 for cutting is fixed on the Z-axis drive assembly 12;

[0039] The Y-axis drive assembly 2 includes a transmission member Y-axis helical rack 2e, Y-axis helical gear 2j and Y-axis servo motor assembly 2f for the laser cutting head 13 to move along the Y-axis. It also includes a cross beam 2a for carrying the Y-axis drive assembly 2. The cross beam 2a is fixedly connected to the sliding member of the X-axis drive assembly 10. A Y-axis guide rail 2b is provided on the upper end surface of the cross beam 2a. A Y-axis slide plate 2g is slidably installed on the Y-axis guide rail 2b through a slider. And the Y-axis servo motor assembly 2f is installed on the Y-axis slide plate 2g. The Y-axis helical gear 2j is fitted on the output end of the Y-axis servo motor assembly 2f. And the Y-axis helical gear 2j meshes with the Y-axis helical rack 2e fixed on the upper end surface of the cross beam 2a. The Z-axis drive assembly 12 is fixed on the side surface of the Y-axis slide plate 2g.

[0040] During specific operation, the Y-axis is provided with two Y-axis guide rails 2b. The Y-axis slide plate 2g is slidably fitted with the two Y-axis guide rails 2b through a slider, limiting the Z-axis displacement and X-axis displacement of the Y-axis slide plate 2g. The Y-axis helical rack 2e is fixed between the two Y-axis guide rails 2b. The Y-axis helical gear 2j assembled on the Y-axis slide plate 2g rolls on the Y-axis helical rack 2e under the drive of the Y-axis servo motor assembly 2f, thereby driving the Y-axis slide plate 2g to move, and further driving the Z-axis drive assembly 12 to move on the Y-axis. In this way, by adopting the meshing transmission mode of helical gears and racks, using the characteristics that helical gears and racks mesh alternately and do not generate meshing clearances, the problem that the positioning accuracy cannot meet the processing requirements during the repeated positioning of the laser cutting head 13 due to meshing clearances is avoided. At the same time, compared with linear motor drive, it can save higher production and maintenance costs, thus meeting the needs of mass production.

[0041] As an implementation mode of the present invention, as Figures 2-5 shown: The X-axis drive assembly 10 includes a transmission member X-axis helical rack 10b, X-axis helical gear 10h and X-axis servo motor assembly 10e for the Y-axis drive assembly 2 to move along the X-axis. It also includes an X-axis bottom plate fixedly installed on both sides of the sheet metal streamline. An X-axis guide rail 10g is fixed on the X-axis bottom plate. An X-axis slide plate 10c is slidably installed on the X-axis guide rail 10g through a slider. And both ends of the cross beam 2a are respectively fixed on the X-axis slide plates 10c of the two X-axis drive assemblies 10. The X-axis servo motor assembly 10e is fixed on the X-axis slide plate 10c. The X-axis helical gear 10h is fitted on the output end of the X-axis servo motor assembly 10e. And the X-axis helical gear 10h meshes with the X-axis helical rack 10b fixed on the X-axis bottom plate.

[0042] During specific operation, based on the previous embodiment, in this embodiment, the transmission components of the Y-axis and X-axis both adopt the meshing method of helical gears and racks. The X-axis servo motor assemblies 10e arranged on both sides drive the X-axis helical gears 10h to roll meshingly on the X-axis helical racks 10b, thereby driving the Y-axis transmission assembly 2 fixed on the two X-axis sliding plates 10c to move along the X-axis on the two X-axis guide rails 10g.

[0043] As an implementation manner of the present utility model, as Figures 2-5 shown: On the upper surfaces of the X-axis bottom plate and the cross beam 2a, two X-axis anti-collision blocks 10f for sliding limit and solid anti-collision blocks 2d are respectively fixedly arranged opposite to each other. At the mating positions of the X-axis sliding plate 10c and the Y-axis sliding plate 2g with their corresponding motors, an X-axis gear clearance adjustment ring 10d and a Y-axis gear clearance adjustment ring 2i for adjusting the clearance between the gear and the rack are respectively provided. At both ends of the upper surfaces of the X-axis bottom plate and the cross beam 2a, an X-axis telescopic protective cover 10a and a Y-axis telescopic protective cover 2c are respectively fixed.

[0044] During specific operation, the X-axis anti-collision blocks 10f and the solid anti-collision blocks 2d are both arranged in pairs on the X-axis bottom plate and the cross beam 2a, and their functions and structures are the same, respectively used to limit the extreme displacements of the X-axis and Y-axis movements to prevent the transmission components from disengaging under special circumstances; the X-axis gear clearance adjustment ring 10d and the Y-axis gear clearance adjustment ring 2i are respectively used to adjust the clearance between the helical gears and racks of the X-axis and Y-axis.

[0045] As an implementation manner of the present utility model, as Figures 2-5 shown: A first felt gear 2h and a second felt gear 10i for cleaning and lubricating are respectively rotatably fitted on the Y-axis sliding plate 2g and the X-axis sliding plate 10c, and the first felt gear 2h and the second felt gear 10i are respectively meshed with the Y-axis helical rack 2e and the X-axis helical rack 10b.

[0046] During specific operation, the debris and dust generated during the cutting process are easily adhered to the lubricating oil of the transmission components, resulting in dirt covering the helical gears and racks, thereby affecting their transmission stability. Therefore, the first felt gear 2h and the second felt gear 10i are added to self-clean and lubricate the helical gears and racks of the Y-axis and X-axis, so as to keep their good transmission stability.

[0047] As an implementation manner of the present utility model, as Figures 6-10 shown: The front centering conveying roller group 4, the rear centering conveying roller group 5, and the feeding roller group 7 are all provided with clamping mechanisms that roll and rub against the side edges of the plate; the clamping mechanisms include a first clamping mechanism, a second clamping mechanism, and a third clamping mechanism respectively arranged on the front centering conveying roller group 4, the rear centering conveying roller group 5, and the feeding roller group 7.

[0048] As an embodiment of the present utility model, as shown in Figure 6 Figure 1: The front centering conveying roller group 4 includes a first centering base plate 4g and a second centering plate 4k fixed on the bed 1. A profile is fixed between the first centering base plate 4g and the second centering plate 4k. A slide rail 4j is fixed on the profile. A first clamping mechanism is slidably engaged on the slide rail 4j through a slider 4i;

[0049] The first clamping mechanism includes two relatively arranged first V-groove bearings 4h. The two first V-groove bearings 4h are respectively engaged on two relatively arranged sliding members. A front right-handed lead screw 4m and a front left-handed lead screw 4l are respectively engaged on the two sliding members. The middle of the front right-handed lead screw 4m and the front left-handed lead screw 4l is connected by a coupling. The other ends of the front left-handed lead screw 4l and the front right-handed lead screw 4m are respectively rotatably engaged on the second centering plate 4k and the first centering base plate 4g. A right-angle converter 4f is fixed at one of the mating ends. A coupling 4e, a coupling 4d, a digital handwheel 4a, and a bearing 4c and a bearing seat transition plate 4b for supporting the coupling 4d are connected through the right-angle converter 4f.

[0050] During specific operation, the thread directions set on the front right-handed lead screw 4m and the front left-handed lead screw 4l are opposite. When the front right-handed lead screw 4m and the front left-handed lead screw 4l rotate in the same direction, the two relatively arranged first clamping mechanisms approach or separate relative to each other. By turning the digital handwheel 4a, the distance between the two relatively arranged first V-groove bearings 4h is adjusted to clamp the thin plate.

[0051] As an embodiment of the present utility model, as shown in Figure 7 Figure 2: The rear centering conveying roller group 5 includes two bracket side plates 5a fixed on the bed 1. Two first guide rods 5f are fixed between the bracket side plates 5a. A second clamping mechanism is slidably engaged on the two first guide rods 5f.

[0052] The second clamping mechanism includes two first baffles 5d slidably engaged on the first guide rods 5f. The two first baffles 5d are relatively arranged. A first linear bearing 5e is engaged between the first baffle 5d and the first guide rod 5f. A material retaining cover plate 5b and a first feed port baffle 5h are respectively fixed at the tops of the two first baffles 5d. Second V-groove bearings 5c are arranged above the material retaining cover plate 5b and the first feed port baffle 5h. A first left-handed lead screw 5m and a first right-handed lead screw 5n are respectively engaged on the two first baffles 5d. One end of the rear centering conveying roller group 5 and the first right-handed lead screw 5n are commonly connected and fixed with a first rear reverse lead screw coupling 5g. The other ends of the first left-handed lead screw 5m and the first right-handed lead screw 5n are respectively rotatably engaged on the bracket side plates 5a on both sides. A first bearing seat 5i, a fixing ring 5j, and a first handwheel 5k for rotating the first right-handed lead screw 5n and the first left-handed lead screw 5m are assembled at the mating end of the first right-handed lead screw 5n and the bracket side plate 5a.

[0053] During specific operation, the thread teeth provided on the first left-handed lead screw 5m and the first right-handed lead screw 5n are opposite. By rotating the first handwheel 5k, the distance between two relatively arranged second V-groove bearings 5c is adjusted to clamp the thin plate.

[0054] As an implementation manner of the present utility model, as Figures 9-10 shown in the figure: The feeding roller group 7 includes two arc-shaped side plates 7a. A plurality of intermediate rollers 7b are arranged along the arc surface between the two arc-shaped side plates 7a. Above the last intermediate roller 7b on the arc surface, there is a leveling roller for feeding and primary leveling. In front of the leveling roller, there is a third clamping mechanism for clamping the thin plate. The third clamping mechanism includes two second guide rods 7f fixed between the two arc-shaped side plates 7a. Two second baffles 7n are oppositely arranged on the two second guide rods 7f, and the two second baffles 7n are slidably matched with the second guide rods 7f. The center positions of the two second baffles 7n are respectively fitted with a second left-handed lead screw 7j and a second right-handed lead screw 7m. A second forward and reverse lead screw coupling 7k is fixedly connected between the second left-handed lead screw 7j and the second right-handed lead screw 7m. At the top ends of the two second baffles 7n, there are a material blocking top plate 7c and a second feed port baffle 7e for limiting the thin plate, and a third V-groove bearing 7d for clamping the side of the thin plate. The mating end of the second left-handed lead screw 7j and the arc-shaped side plate 7a is provided with a second bearing seat 7g, a second fixing ring 7i, and a second handwheel 7h for adjusting the distance between the two second baffles 7n.

[0055] During specific operation, the thread tooth directions on the second left-handed lead screw 7j and the second right-handed lead screw 7m are opposite. By adjusting the second handwheel 7h, the second baffles 7n respectively fitted on the second left-handed lead screw 7j and the second right-handed lead screw 7m move synchronously towards the middle to clamp or move towards both sides to loosen the thin plate, so that the third V-groove bearing 7d clamps or loosens the side of the thin plate.

[0056] As an implementation manner of the present utility model, as Figures 8-10 shown in the figure: The leveling roller provided on the feeding roller group 7 performs preliminary pressing and leveling on the thin plate, and is used to cooperate with the pressure roller group 6 to form stable feeding and feeding of the thin plate; The pressure roller group 6 includes roller feeding wallboards 6a fixed on both sides of the upper surface of the bed body 1. The upper end surfaces of the two roller feeding wallboards 6a are jointly connected with an upper top plate 6g. A driving roller 6b is rotatably matched between the two roller feeding wallboards 6a. One end of the driving roller 6b is fitted with a reduction motor 6k. A rectangular sliding groove 6d is opened on the roller feeding wallboard 6a. A U-shaped support 6f is fitted in the rectangular sliding groove 6d. A pressure roller is rotatably matched between the two U-shaped supports 6f on both sides. An installation plate is fixed between the two U-shaped supports 6f on both sides, and a pressure cylinder 6m for pulling back the pressure roller is arranged between the installation plate and the upper top plate 6g, and a pressure spring guide rod 6h and a spring 6i for elastically pressing the pressure roller and the material plate.

[0057] During specific operation, when loading the sheet material, the pressing cylinder 6m pulls back the U-shaped support 6f, compressing the spring 6i, separating the lower pressing roller from the driving roller 6b to facilitate the passing of the sheet material. After the sheet material is inserted, the pressing cylinder 6m moves slightly to reset the U-shaped support 6f, and then under the action of the spring 6i, the lower pressing roller presses the sheet material. This can not only meet the need to drive the thin sheet to move with rolling friction but also prevent the thin sheet from being jammed. Driven by the reduction motor 6k, the driving roller 6b rotates, and the thin sheet is dragged to move forward using the rolling friction force.

[0058] As an implementation manner of the present utility model, as Figures 11-12 shown: The encoder assembly 9 includes two outlet cylinder sliders 9d fixed on the upper top plate 6g. An outlet pressing roller support 9m is slidably fitted between the two outlet cylinder sliders 9d. An outlet cylinder mounting plate 9c is fixed on the upper end surfaces of the two outlet cylinder sliders 9d. A rectangular spring 9l is provided between the outlet cylinder mounting plate 9c and the outlet pressing roller support 9m. A pressing roller connecting plate 9j is fixed between the two outlet pressing roller supports 9m. A synchronizer pressing roller 9g is rotatably fitted between the two outlet pressing roller supports 9m. An encoder cylinder 9a is fixedly installed on the outlet cylinder mounting plate 9c, and the output end of the encoder cylinder 9a is connected to the pressing roller connecting plate 9j. An encoder lower pressing roller 9i and an encoder roller support 9e for installing the encoder lower pressing roller 9i are provided below the synchronizer pressing roller 9g. An encoder roller mounting bottom frame 9h is fixed below the encoder roller support 9e, and the encoder roller mounting bottom frame 9h is fixed on the bed body 1. An encoder integrated support 9f and an encoder motor 9b are provided at one end of the encoder lower pressing roller 9i.

[0059] During specific operation, when loading the sheet material, the encoder cylinder 9a pulls back the pressing roller connecting plate 9j to separate the synchronizer pressing roller 9g and the encoder lower pressing roller 9i. After the sheet material is inserted, the encoder cylinder 9a moves slightly to reset. At this time, under the elastic force of the rectangular spring 9l, the synchronizer pressing roller 9g presses the sheet material, preventing relative sliding between the encoder lower pressing roller 9i and the thin sheet. Thus, the feeding movement amount of the thin sheet can be accurately read and controlled by the encoder motor 9b to achieve the purpose of precise processing.

[0060] The working principle and usage process of the present utility model: The thin sheet is loaded from the feeding roller group 7, and successively passes through the feeding roller group 7, the pressing roller group 6, the rear centering conveying roller group 5, the cutter bar assembly 11, the front centering conveying roller group 4, and the conveyor belt 3. The pressing roller group 6 controls the feeding of the thin sheet, and the encoder assembly 9 regulates the feeding accuracy. The thin sheet moves to the cutter bar assembly 11 for cutting and processing. After the processing is completed, the thin sheet moves to the conveyor belt 3 for discharging, and the waste generated by cutting falls from the cutter bar assembly 11 to the waste conveying device 8 for discharging.

[0061] In this process, the leveling rollers and the material pressing roller group 6 provided by the feeding roller group 7 are used to level the thin plate material. The first clamping mechanism, the second clamping mechanism and the third clamping mechanism are set. By adjusting the corresponding transmission devices, the paired first V-groove bearings 4h, the second V-groove bearings 5c and the third V-groove bearings 7d clamp the sides of the thin plate. In this way, when the adjusting handwheel is clamped, the thin plate can be centered and clamped, so that the sides of the thin plate are completely in contact with the clamping mechanism, thereby avoiding the positioning error along the clamping direction during the continuous processing of the thin plate, achieving higher positioning accuracy. At the same time, when the thin plate is fed, the rolling friction between the clamping device and the thin plate can reduce the frictional force of the thin plate feeding, which is beneficial for the material pressing roller group 6 and the encoder assembly 9 to adjust the feeding of the thin plate.

[0062] In addition, during the cutting process of the movement of the laser cutting head 13, the X-axis and Y-axis transmissions adopt the meshing transmission mode of helical gears and racks. By using the characteristics of the alternating meshing of helical gears and racks without generating meshing clearances, the problem that the positioning accuracy of the laser cutting head 13 cannot meet the processing requirements during the repeated positioning process due to the meshing clearances is avoided. At the same time, compared with the linear motor drive, it can save higher production and maintenance costs, thus meeting the needs of mass production.

[0063] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A new type of flexible laser cutting production line for thin plates, comprising a bed body (1), on which there are a plate streamline for clamping and moving plates and a moving platform for laser cutting; The plate streamline includes a conveyor belt (3), a front centering conveying roller group (4), a knife bar assembly (11), a rear centering conveying roller group (5), a pressure roller group (6) and a feeding roller group (7) arranged in sequence from left to right. The knife bar assembly (11) serves as the cutting operation area, and a waste conveying device (8) is provided below it. An encoder assembly (9) is fixed on one side of the pressure roller group (6); The moving platform is an X, Y, Z three-axis platform, including an X-axis transmission assembly (10) fixed on both sides of the plate streamline. Horizontally above the X-axis transmission assembly (10), there is a Y-axis transmission assembly (2). A Z-axis transmission assembly (12) is slidably fitted on the Y-axis transmission assembly (2), and a laser cutting head (13) for cutting is fixed on the Z-axis transmission assembly (12); It is characterized in that: The Y-axis transmission assembly (2) includes a transmission component for the laser cutting head (13) to move along the Y-axis, namely a Y-axis helical rack (2e), a Y-axis helical gear (2j) and a Y-axis servo motor assembly (2f). It also includes a cross beam (2a) for carrying the Y-axis transmission assembly (2). The cross beam (2a) is fixedly connected to the sliding component of the X-axis transmission assembly (10). A Y-axis guide rail (2b) is provided on the upper end surface of the cross beam (2a). A Y-axis slide plate (2g) is slidably installed on the Y-axis guide rail (2b) through a slider. And the Y-axis servo motor assembly (2f) is installed on the Y-axis slide plate (2g). The Y-axis helical gear (2j) is fitted at the output end of the Y-axis servo motor assembly (2f), and the Y-axis helical gear (2j) meshes with the Y-axis helical rack (2e) fixed on the upper end surface of the cross beam (2a). The Z-axis transmission assembly (12) is fixed on the side surface of the Y-axis slide plate (2g).

2. The novel thin plate laser cutting flexible production line according to claim 1, wherein: The X-axis transmission assembly (10) includes a transmission component for the Y-axis transmission assembly (2) to move along the X-axis, namely an X-axis helical rack (10b), an X-axis helical gear (10h) and an X-axis servo motor assembly (10e). It also includes an X-axis bottom plate fixedly installed at both sides of the plate streamline. An X-axis guide rail (10g) is fixed on the X-axis bottom plate. An X-axis slide plate (10c) is slidably installed on the X-axis guide rail (10g) through a slider. And both ends of the cross beam (2a) are respectively fixed on the X-axis slide plates (10c) of the two X-axis transmission assemblies (10). The X-axis servo motor assembly (10e) is fixed on the X-axis slide plate (10c). The X-axis helical gear (10h) is fitted at the output end of the X-axis servo motor assembly (10e), and the X-axis helical gear (10h) meshes with the X-axis helical rack (10b) fixed on the X-axis bottom plate.

3. The novel thin plate laser cutting flexible production line according to claim 2, wherein: On the upper surfaces of the X-axis base plate and the cross beam (2a), two X-axis anti-collision blocks (10f) and solid anti-collision blocks (2d) for sliding limit are respectively fixedly provided. At the mating positions of the X-axis slide plate (10c) and the Y-axis slide plate (2g) with their corresponding motors, an X-axis gear clearance adjustment ring (10d) and a Y-axis gear clearance adjustment ring (2i) for adjusting the clearance between the gear and the rack are respectively provided. At both ends of the upper surfaces of the X-axis base plate and the cross beam (2a), an X-axis telescopic shield (10a) and a Y-axis telescopic protection cover (2c) are respectively fixed.

4. The novel thin plate laser cutting flexible production line according to claim 2, characterized in that: A first felt gear (2h) and a second felt gear (10i) for cleaning and lubricating are respectively rotatably fitted on the Y-axis slide plate (2g) and the X-axis slide plate (10c), and the first felt gear (2h) and the second felt gear (10i) are respectively meshed with the Y-axis helical rack (2e) and the X-axis helical rack (10b).

5. The novel thin plate laser cutting flexible production line according to any one of claims 1-4, characterized in that: The front centering conveying roller group (4), the rear centering conveying roller group (5) and the feeding roller group (7) are all provided with clamping mechanisms that roll and friction with the side edges of the sheet.

6. The novel thin plate laser cutting flexible production line according to claim 5, wherein: The feeding roller group (7) includes two arc-shaped side plates (7a). Between the two arc-shaped side plates (7a), a plurality of intermediate rollers (7b) are arranged along the arc surface. Above the last intermediate roller (7b) on the arc surface, a leveling roller for feeding and pressing and primary leveling is provided.

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