An intelligent sword fence system

Abstract

The present invention relates to the field of welding technology, and in particular to an intelligent sword-grid system, comprising a circulating conveying system for circulating workpieces, the circulating conveying system comprising a conveyor belt or plate chain forming a closed loop, and a driving device capable of driving the conveyor belt or plate chain to cyclically reciprocate, a plurality of adjustment and positioning devices are fixed at equal intervals along the circulation direction on the conveyor belt or plate chain, each adjustment and positioning device is correspondingly provided with a sword cutter, the sword cutter is fixed at the movable end of the adjustment and positioning device, and the adjustment and positioning is driven by the movable end of the adjustment and positioning device, the adjustment direction of the sword cutter is perpendicular to the feeding direction of the workpiece, when the conveyor belt or plate chain cyclically moves, the upper area is a laser cutting area, and the lower area is a sword cutter adjustment area, and the sword cutter adjustment and positioning are performed in the sword cutter adjustment area, the sword-grid system of the present invention can ensure that the sword cutter can adapt to continuous dynamic cutting, avoid the sword cutter being cut by laser, and at the same time can prevent the workpiece from being lifted up and misaligned after being cut, thereby ensuring the long-term safe operation of the system.

Description

Technical Field

[0001] The invention relates to the technical field of welding, and in particular to an intelligent sword-grid system. Background Art

[0002] The sword-grid system currently used for sheet metal laser cutting or laser blanking, whether it is stationary static cutting or rolling dynamic cutting, faces the following problems:

[0003] The sword fence is directly cut by the laser. Since the sword fence itself is cheap, the industry allows the sword fence as a support to become a consumable part. However, after being cut, the sword fence will have a lot of burns, defects, and slag, which directly leads to the damage of the surface quality of the workpiece when it supports a new workpiece again. For sheet metal parts with high surface quality requirements such as automotive sheet metal, sword fences with defects or slag are important factors that damage their quality. Therefore, traditional sword fences cannot meet the cutting needs of sheet metal parts with high surface quality.

[0004] During the laser cutting process, sheet metal parts often warp and misalign after being cut. This is partly because of the release of internal stress in the sheet metal parts themselves, and partly because of external factors such as workpiece movement and high-pressure airflow. The warping of sheet metal parts poses a potential risk for high-speed cutting, and it is easy for the sheet metal parts to collide with the cutting head, which will cause the system to be unable to form long-term continuous production. Therefore, traditional sword fences cannot meet the needs of workplaces with long-term continuous production, such as continuous unwinding and blanking.

[0005] During the continuous unwinding and blanking process, the sheet metal will swing horizontally (the so-called snake swing), which will lead to inaccurate cutting position of the workpiece and directly affect the geometric size of the cutting pattern. Therefore, the traditional sword fence cannot guarantee the geometric shape of the cutting pattern during the continuous unwinding and blanking process. Summary of the invention

[0006] In order to ensure that the sword grid can adapt to continuous dynamic cutting, avoid the sword grid being cut by laser, prevent the workpiece from being scratched by the sword grid, make it adapt to occasions with high surface quality requirements such as automotive sheet metal, prevent the workpiece from warping and misalignment after cutting, ensure the long-term safe operation of the system, prevent the lateral swing (i.e., snake swing) of the workpiece during unwinding, and ensure the geometric accuracy of the cutting pattern, the present invention provides an intelligent sword grid system.

[0007] The present invention is achieved through the following technical solutions:

[0008] An intelligent sword-grid system includes a circulating conveying system for circulating workpieces,

[0009] The circulating conveying system includes a conveyor belt or plate chain forming a closed loop, and a power mechanism, which can drive the conveyor belt or plate chain to reciprocate in a circular motion;

[0010] Several adjusting and positioning devices are fixed at equal intervals on the conveyor belt or plate chain along the circulation direction. Each adjusting and positioning device is correspondingly provided with a sword cutter. The sword cutters located on the conveyor belt or plate chain constitute a sword cutter unit. The sword cutters are fixed at the movable end of the adjusting and positioning device. The movable end of the adjusting and positioning device drives the adjusting and positioning. The adjusting direction of the sword cutters is perpendicular to the feeding direction of the workpiece.

[0011] When the conveyor belt or plate chain is in circular motion, the upper area is the laser cutting area, and the lower area is the sword cutting adjustment area. The sword cutting adjustment positioning is carried out in the sword cutting adjustment area.

[0012] Each sword has several adsorption-type top supports evenly distributed along its length;

[0013] At least two intelligent clamping claw devices capable of clamping the workpiece during cutting are symmetrically arranged on both sides of the sword cutting unit.

[0014] Furthermore,

[0015] The circulating conveying system is a plate chain circulating system, which is composed of an upper plate chain, a lower plate chain, and two semicircular plate chains to form a complete closed loop capable of cyclic reciprocating motion;

[0016] The upper plate chain, the lower plate chain and the two semicircular plate chains are all composed of a number of chain plates that are fixedly connected in sequence;

[0017] The plate chain circulation system is driven by a roller mechanism to reciprocate;

[0018] The roller mechanism includes a driving roller and a supporting positioning roller. The driving roller is arranged on the inner side of the plate chain circulation system to drive the plate chain circulation system to reciprocate.

[0019] The supporting positioning roller is arranged in the roller slideway and slides along the roller slideway in a circular motion. The roller slideway is arranged on two sides of the plate chain circulation system. The plate chain circulation system is slidably connected with the roller slideway through the supporting positioning roller.

[0020] The driving roller is driven by a camshaft mechanism, the transmission element of the camshaft mechanism is a conjugate cam, and the conjugate cam is meshed with the driving roller without clearance.

[0021] Furthermore,

[0022] Two sets of roller mechanisms are arranged, and the two sets of roller mechanisms are symmetrically arranged on the plate chain circulation system;

[0023] Two groups of camshaft mechanisms are arranged, and the two groups of camshaft mechanisms are symmetrically arranged on both sides of the plate chain circulation system. Each group of camshaft mechanisms includes two camshaft mechanisms, namely an upper camshaft mechanism and a lower camshaft mechanism. The upper camshaft mechanism is used to drive the driving roller of the upper plate chain, and the lower camshaft mechanism is used to drive the driving roller of the lower plate chain. The upper camshaft mechanism and the lower camshaft mechanism are symmetrically arranged at both ends of the plate chain circulation system.

[0024] Furthermore,

[0025] Each chain plate is provided with a corresponding sword fence, and each sword fence corresponds to an adjustment and positioning device;

[0026] The adjustment and positioning device includes a servo motor and a ball screw. The ball screw is fixed on the chain plate through a fixing seat, and the sword cutter is fixed on the slider of the ball screw. The servo motor drives the sword cutter to adjust and position through the ball screw.

[0027] Furthermore,

[0028] The adsorption type top support includes a cylindrical support column and a vacuum suction cup, and the vacuum suction cup is fixed on the sword deletion unit through the cylindrical support column.

[0029] Furthermore,

[0030] The intelligent clamping device includes a slide seat, a servo feed slide, and a clamping cylinder. The servo feed slide is correspondingly arranged on the slide seat, and the clamping cylinder is installed on the servo feed slide. It moves with the servo feed slide to clamp or move away from the workpiece. The slide seat is fixedly connected to the sword.

[0031] The beneficial effects of the present invention are:

[0032] The setting of the circulating conveying system of the present invention enables the sword grid to adapt to continuous cutting, and avoids relative sliding between the adsorption-type top support and the workpiece at a stable running speed, thereby preventing the workpiece from being scratched;

[0033] The apex of the sword grid can intelligently avoid the laser beam, thus preventing the sword grid from being damaged by the laser beam, thereby preventing the workpiece from damaging its surface quality on the sword grid. This makes the system suitable for work places with high requirements on surface quality, such as automotive exterior panels.

[0034] The top vacuum adsorption system can effectively prevent the workpiece from warping and misalignment after cutting, making the system suitable for cutting under high-speed motion;

[0035] The high-speed response intelligent clamp effectively suppresses the swing of the workpiece after unwinding, thereby further improving the cutting quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0037] Figure 2 It is a partial enlarged structural diagram of the plate chain circulation system;

[0038] Figure 3 It is a schematic diagram of the cam transmission structure;

[0039] Figure 4 This is a partial enlarged schematic diagram of the connection between the ball screw and the sword grid unit;

[0040] Figure 5 Schematic diagram of the structure of the intelligent gripper device. DETAILED DESCRIPTION

[0041] The present invention is further described below in conjunction with specific implementation methods. The following embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work all belong to the protection scope of the present invention. In addition, all the connection / connection relationships mentioned in the present invention do not simply refer to the direct connection of components, but according to the specific implementation situation, a better connection / connection structure is formed by adding or reducing connection accessories.

[0042] Embodiment 1,

[0043] An intelligent sword-grid system, comprising a circulating conveying system for circulating workpieces, and an intelligent clamping device 3 for clamping the edge of the workpiece during cutting;

[0044] The circulating conveying system is a plate chain circulating system, which consists of an upper plate chain, a lower plate chain, and two semicircular plate chains to form a complete closed loop capable of cyclic reciprocating motion;

[0045] The upper plate chain, the lower plate chain and the two semicircular plate chains are all composed of a number of chain plates that are fixedly connected in sequence;

[0046] Two sets of roller mechanisms are arranged symmetrically on the plate chain circulation system. Each set of roller mechanisms includes a driving roller and a supporting positioning roller. The driving roller is arranged on the inner side surfaces of the upper plate chain, the lower plate chain and the two semicircular plate chains to drive the plate chain circulation system to reciprocate.

[0047] The driving roller is driven by the camshaft 7, which drives the driving roller 8 on the circulating chain plate in a conjugate fitting manner. The circulating conveying system has left and right sides, and two camshafts are arranged on each side. The four camshafts move synchronously, which can complete the synchronous uniform speed movement of the plate chain system. The camshaft 7 is driven by the servo motor 2;

[0048] The supporting and positioning roller is arranged in the roller slideway 5 and slides along the roller slideway 5 in a circular motion. The roller slideway 5 is arranged on two sides of the plate chain circulation system 6. The plate chain circulation system 6 is slidably connected with the roller slideway 5 through the supporting and positioning roller.

[0049] Each chain plate is provided with a sword grid 1, each sword grid 1 corresponds to an adjustment and positioning device, the adjustment direction of each sword grid 1 is perpendicular to the workpiece feeding direction, and the sword grids of the plate chain circulation system constitute a sword grid unit;

[0050] The adjustment and positioning device includes a servo motor 9 and a ball screw 10. The ball screw 10 is fixed to the chain plate through a fixing seat, and the sword delete 1 is fixed to the slider 11 of the ball screw. The servo motor 9 drives the sword delete 1 to adjust the positioning through the ball screw 10.

[0051] Each sword delete 1 has a plurality of adsorption-type top supports 4 evenly distributed along the length direction, and the adsorption-type top supports 4 include a cylindrical support column 12 and a vacuum suction cup 13. The vacuum suction cup 13 is fixed on the sword delete 1 through the cylindrical support column 12, and the vacuum suction cup 13 is connected to the vacuum equipment through a connecting pipe;

[0052] The intelligent gripper device 3 is symmetrically arranged on both sides of the sword deletion unit;

[0053] The intelligent clamping device 3 includes a slide seat 15, a servo feed slide 16, and a clamping cylinder 17. The servo feed slide 16 is correspondingly arranged on the slide seat 15, and the clamping cylinder 17 is installed on the servo feed slide 16 and moves with the servo feed slide 16. The slide seat 15 is fixedly connected to the sword delete 1.

[0054] Embodiment 2, based on the implementation of embodiment 1, in order to save space and improve the portability and simplicity of the overall structure, two sets of relatively narrow plate chain circulation systems can be used to replace the plate chain circulation system in embodiment 1;

[0055] In this embodiment, two sets of plate chain circulation systems are symmetrically arranged, and each set of plate chain circulation system is correspondingly provided with a set of roller mechanisms.

[0056] The sword fence 1 is arranged between two sets of plate chain circulation systems;

[0057] The chain plates of the two sets of plate chain circulation systems are connected by a ball screw fixing seat.

[0058] The present invention adopts camshaft mechanism transmission, combined with the setting of driving rollers and supporting positioning rollers, to ensure the stable movement of the plate chain and prevent speed instability caused by polygonal effect. The setting of two sets of camshaft mechanisms can drive the chain system to synchronously and uniformly circulate.

[0059] When the intelligent sword cutter of the present invention is working, the upper plate chain is set as the laser cutting area, the lower plate chain is set as the sword cutter adjustment area, and the cutting trajectory analysis of the graphics to be processed is performed in combination with the intelligent software, and the sword cutter located on the lower plate chain is adjusted and positioned. All adjustment actions are performed in the sword cutter adjustment area, and the sword fence located in the laser cutting area always remains stationary, that is, all adjustments belong to pre-adjustment. When the sword fence enters the laser cutting area, the sword fence has completed the avoidance of the upcoming laser cutting. The pre-adjustment can ensure that the movement of the sword fence will not rub against the workpiece, and ensure that after adjustment, the vertex on the sword fence can avoid the trajectory of laser cutting;

[0060] The present invention arranges an adsorption type top support on the sword cutting unit. When the sword grid unit enters the working area, the vacuum suction cup in the support column starts to work, and can adsorb the workpiece placed on the top of the sword grid, so as to achieve the goal of avoiding the workpiece from warping and misalignment after cutting. For the support point without the workpiece, the vacuum system can be automatically closed to prevent the failure of the vacuum system. In addition, the cylindrical support column and the flexible suction cup can further ensure that the surface of the workpiece will not be scratched. The adsorption type top support can avoid laser cutting under the drive of the sword grid unit.

[0061] The present invention arranges intelligent clamping devices on both sides of the circulating conveying system. When the workpiece enters the cutting area, the clamping cylinders on both sides of the circulating conveying system automatically approach and clamp the edge of the workpiece. When the laser head approaches the clamping cylinder for laser cutting, the clamping cylinder retreats away from the workpiece in advance to prevent the laser from cutting the clamping cylinder. When the workpiece goes out of the cutting area, the clamping cylinder retreats automatically. The timing of clamping and retreating the clamping cylinder is also calculated and determined in advance by the intelligent software. The clamping claws that have precisely calculated the clamping / relaxing timing can play an important role in suppressing the lateral movement of the workpiece (i.e., snake swing).

[0062] The above embodiments are merely the technical concepts and features of the present invention and cannot be used to limit the protection scope of the present invention. Any equivalent changes or decorations made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. An intelligent sword-grid system, comprising a circulating conveying system for circulating workpieces, The circulating conveying system includes a conveyor belt or plate chain forming a closed loop, and a power mechanism, which can drive the conveyor belt or plate chain to reciprocate in a circular motion; The circulating conveying system is a plate chain circulating system, which is composed of an upper plate chain, a lower plate chain, and two semicircular plate chains to form a complete closed loop capable of cyclic reciprocating motion; The upper plate chain, the lower plate chain and the two semicircular plate chains are all composed of a number of chain plates that are fixedly connected in sequence; The plate chain circulation system is driven by a roller mechanism to reciprocate; The roller mechanism includes a driving roller and a supporting positioning roller. The driving roller is arranged on the inner side of the plate chain circulation system to drive the plate chain circulation system to reciprocate. The supporting positioning roller is arranged in the roller slideway and slides along the roller slideway in a circular motion. The roller slideway is arranged on two sides of the plate chain circulation system. The plate chain circulation system is slidably connected with the roller slideway through the supporting positioning roller. The driving roller is driven by a camshaft mechanism, the transmission element of which is a conjugate cam, and the conjugate cam is meshed with the driving roller without clearance; A plurality of adjusting and positioning devices are fixed at equal intervals on the conveyor belt or plate chain along the circulation direction. A sword grid is correspondingly arranged on each adjusting and positioning device. The sword grids on the conveyor belt or plate chain form a sword grid unit. The sword grids are fixed at the movable end of the adjusting and positioning device, and the movable end of the adjusting and positioning device drives the adjusting and positioning. The adjusting direction of the sword grid is perpendicular to the feeding direction of the workpiece. When the conveyor belt or plate chain is in circular motion, the upper area is the laser cutting area, and the lower area is the sword fence adjustment area. The sword fence adjustment and positioning is performed in the sword fence adjustment area. Each sword fence is evenly distributed along the length direction with a number of adsorption-type top supports that can adsorb the workpiece during cutting; At least two intelligent clamping claw devices capable of clamping the workpiece during cutting are symmetrically arranged on both sides of the sword grid unit.

2. The intelligent sword fence system according to claim 1, characterized in that: Two sets of roller mechanisms are arranged, and the two sets of roller mechanisms are symmetrically arranged on the plate chain circulation system; Two groups of camshaft mechanisms are arranged, and the two groups of camshaft mechanisms are symmetrically arranged on both sides of the plate chain circulation system. Each group of camshaft mechanisms includes two camshaft mechanisms, namely an upper camshaft mechanism and a lower camshaft mechanism. The upper camshaft mechanism is used to drive the driving roller of the upper plate chain, and the lower camshaft mechanism is used to drive the driving roller of the lower plate chain. The upper camshaft mechanism and the lower camshaft mechanism are symmetrically arranged at both ends of the plate chain circulation system.

3. The intelligent sword fence system according to claim 1, characterized in that: Each chain plate is provided with a corresponding sword fence, and each sword fence corresponds to an adjustment and positioning device; The adjustment and positioning device comprises a servo motor and a ball screw. The ball screw is fixed on a chain plate through a fixing seat, the sword grid is fixed on a slider of the ball screw, and the servo motor drives the sword grid to adjust and position through the ball screw.

4. The intelligent sword fence system according to claim 1, characterized in that: The adsorption type top support comprises a cylindrical support column and a vacuum suction cup, and the vacuum suction cup is fixed on the sword grid unit through the cylindrical support column.

5. The intelligent sword fence system according to claim 1, characterized in that: The intelligent clamping device includes a slide seat, a servo feed slide, and a clamping cylinder. The servo feed slide is correspondingly arranged on the slide seat, and the clamping cylinder is installed on the servo feed slide. It moves with the servo feed slide to clamp or move away from the workpiece. The slide seat is fixedly connected to the sword grid.

Images