A laser cutting machine for pretreatment of cooling plate forming

Abstract

This utility model discloses a laser cutting machine for pre-processing of cooling plate forming, relating to the field of laser cutting equipment technology. It includes a cutting machine body with a sword grid worktable on it. Below the sword grid worktable is a floating platform that can be raised and lowered along the height direction. Several conveying rollers are arranged along the feeding direction on the upper wall of the floating platform. When the floating platform rises, the conveying rollers can pass through the gaps in the sword grid worktable to lift and transport the workpiece. This utility model uses a liftable floating platform in conjunction with the conveying rollers. During the feeding stage, the conveying rollers extend from the sword grid table surface, lifting the cooling plate blank and automatically transporting it to the cutting station, eliminating the need for manual pushing and alignment, thus significantly improving feeding efficiency. After being transported to the correct position, the floating platform does not descend immediately, but directly completes the centering and clamping under the support of the conveying rollers. During the entire centering process, the workpiece does not contact the sword grid bars, greatly reducing bottom surface scratches during pushing and centering, and protecting the surface quality of the blank.

Description

Technical Field

[0001] This utility model relates to the field of laser cutting equipment technology, specifically a laser cutting machine for pretreatment of cooling plate forming. Background Technology

[0002] Laser cutting machines are widely used in sheet metal cutting. Before the cooling plate is formed, the blank outline needs to be pre-processed by laser cutting to ensure the dimensional accuracy of the subsequent forming. For example, utility model patent CN211162461U discloses a laser cutting machine with a clamping assembly below the frame. A cylinder drives a diamond-shaped transmission plate to move two clamping plates in opposite directions. The clamping plates extend from the gap in the worktable to clamp the metal plate on both sides, thereby improving cutting positioning accuracy. However, this type of structure still has the following drawbacks in practical applications: 1. The existing equipment does not have an automatic feeding mechanism, and the workpiece needs to be manually pushed and aligned, resulting in low feeding efficiency. Furthermore, the centering and clamping must be completed on the worktable. During the pushing process, the bottom surface of the workpiece rubs hard against the grid, which can easily cause severe scratches on the surface of the thin-walled cooling plate, affecting the forming quality of subsequent pressing.

[0003] 2. The clamping plate is a purely rigid structure, which makes hard contact with the side of the plate during the centering process. For thin-walled workpieces such as cooling plates, it is easy to cause side bumps, dents, and deformation, affecting the forming quality of subsequent pressing. In addition, it cannot adapt to the thickness tolerance of the plate, and the centering effect of different batches of blanks is unstable. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a laser cutting machine for pretreatment of cooling plate forming, which solves the technical problems of existing devices.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A laser cutting machine for pre-processing cooling plate forming includes a cutting machine body, on which a sword grid worktable is provided. Below the sword grid worktable is a floating platform that can be raised and lowered along the height direction. Several conveying rollers are arranged on the upper wall of the floating platform along the feeding direction. When the floating platform rises, the conveying rollers can pass through the gaps in the sword grid worktable to lift and transport the workpiece. Positioning guide grooves are provided on both side walls of the floating platform. Two sets of support arms that can move in opposite directions are slidably connected in the positioning guide grooves. The lower ends of the two sets of support arms are connected to the fixed drive structure of the cutting machine body, and the upper ends are respectively fixed with a positioning block and a clamping block. A floating block is elastically connected to the side of the clamping block facing the positioning block along the clamping direction to buffer the clamping stress.

[0006] Preferably, the inner sidewall of the cutting machine body is fixed with a lifting guide rail along the height direction, and the sidewall of the floating table is provided with a lifting guide groove that is adapted to slide with the lifting guide rail; a lifting drive component is fixed below the floating table for driving the floating table to rise and fall vertically.

[0007] Preferably, a drive plate is fixedly connected to the inner wall of the cutting machine body below the floating table. Two sets of adapter frames are fixed to the upper wall of the drive plate. A bidirectional lead screw is rotatably installed between the two sets of adapter frames. The left and right threads of the bidirectional lead screw have opposite directions. Drive sleeves are screwed onto the two threads of the bidirectional lead screw. The upper ends of the two drive sleeves are fixedly connected to the support arms on the corresponding sides. A clamping drive motor is fixed to the upper wall of the drive plate. A bevel gear transmission group is provided between the output end of the clamping drive motor and the bidirectional lead screw, which drives the bidirectional lead screw to rotate through meshing transmission.

[0008] Preferably, the upper wall of the drive plate is also fixed with a common guide bar parallel to the bidirectional lead screw, and the side wall of the drive screw sleeve is fixed with a synchronous connecting plate, which is slidably adapted to the common guide bar; the bidirectional lead screw is fitted with two corrugated dustproof sleeves, the outer ends of the two corrugated dustproof sleeves are respectively sealed to the corresponding side adapter, and the inner ends are respectively sealed to the corresponding side drive screw sleeve.

[0009] Preferably, the clamping block has a floating groove inside, the floating block is slidably connected in the floating groove, and a limit spring rod is fixed between the floating block and the bottom of the floating groove. In the natural state, the limit spring rod pushes the floating block to extend outward.

[0010] Preferably, the several conveying rollers are sequentially divided into a feed drive roller, a driven roller and a discharge drive roller along the feeding direction, and the ends of the roller shafts of the feed drive roller and the discharge drive roller are driven by a conveying drive component.

[0011] This utility model provides a laser cutting machine for pre-processing cooling plate forming, which has the following advantages: 1. This utility model adopts a liftable floating platform in conjunction with conveyor rollers. During the feeding stage, the conveyor rollers extend from the sword grid table surface, lifting the cooling plate blank and automatically conveying it to the cutting station. No manual pushing and alignment is required, which greatly improves the feeding efficiency. After the conveyor reaches the position, the floating platform does not descend temporarily. The centering and clamping are completed directly under the support of the conveyor rollers. The workpiece does not contact the sword grid bars during the entire centering process, which greatly reduces the bottom surface scratches during pushing and centering and protects the surface quality of the blank. After centering, the floating platform drives the conveyor rollers to descend smoothly, and the workpiece falls vertically onto the sword grid worktable. There is less rigid impact and lateral rubbing, and the dropping position is stable.

[0012] 2. This utility model is equipped with a floating block with spring buffer on the clamping side, which flexibly contacts the side of the workpiece during the centering and straightening process, avoiding the impact and damage to the side of the thin-walled cooling plate when the rigid clamping block moves quickly; at the same time, it can adapt to a small range of plate thickness tolerance, ensuring that different batches of blanks can achieve stable centering and straightening, and will not cause side depression deformation caused by rigid clamping. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the cutting machine body structure of this utility model; Figure 3 This is a schematic diagram of the floating platform structure of this utility model; Figure 4 This is a schematic diagram of the drive board structure of this utility model; Figure 5 for Figure 4 A magnified view of a portion of point A in the middle.

[0014] In the diagram: 1. Cutting machine body; 2. Sword grid worktable; 3. Floating table; 4. Conveyor roller; 5. Positioning guide groove; 6. Support arm; 7. Positioning block; 8. Clamping block; 9. Floating block; 10. Lifting guide rail; 11. Lifting guide groove; 12. Lifting drive component; 13. Drive plate; 14. Adapter frame; 15. Bidirectional lead screw; 16. Drive screw sleeve; 17. Clamping drive motor; 18. Bevel gear transmission group; 19. Common guide bar; 20. Synchronous connection plate; 21. Corrugated dust cover; 22. Floating groove; 23. Limit spring rod. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0016] like Figure 1-5 As shown, the present invention discloses a laser cutting machine for pretreatment of cooling plate forming, including a cutting machine body 1. A sword grid worktable 2 is detachably installed on the worktable surface of the cutting machine body 1. The grid bars of the sword grid worktable 2 extend along the feeding direction, and there are uniform gaps between the grid bars to allow the conveying roller to move up and down and the clamping components to move horizontally.

[0017] A horizontally arranged floating platform 3 is installed below the sword grid worktable 2. Lifting guide rails 10 are fixed along the height direction on the left and right inner side walls of the cutting machine body 1. Lifting guide grooves 11 are correspondingly opened on the two side walls of the floating platform 3. The lifting guide grooves 11 are slidably adapted to the lifting guide rails 10, providing precise guidance constraints for the vertical lifting of the floating platform 3. A lifting drive component 12 is fixed below the floating platform 3. The lifting drive component 12 can adopt existing linear drive structures such as electric actuators and hydraulic cylinders, and is used to drive the floating platform 3 to smoothly lift and lower along the height direction.

[0018] Several conveyor rollers 4 are arranged sequentially along the feeding direction on the upper wall of the floating platform 3. The positions of the conveyor rollers 4 correspond one-to-one with the gaps in the slat worktable 2. Each conveyor roller 4 has a sealed end cap at the bearing end of its roller shaft to prevent dust from entering the bearing mating surface, ensuring smooth conveying rotation and extending service life. When the floating platform 3 rises to its highest position, the top of the conveyor roller 4 extends upward through the gap, exceeding the top surface of the slat worktable 2, lifting the workpiece off the platform surface, achieving simultaneous rolling conveying and centering support. When the floating platform 3 descends to its lowest position, the top of the conveyor roller 4 retracts completely below the platform surface of the slat worktable 2, and the workpiece falls smoothly onto the slats. The several conveyor rollers 4 are divided into feed drive rollers, driven rollers, and discharge drive rollers along the feeding direction. The ends of the feed drive rollers and discharge drive rollers are all connected to conveying drive components to provide power for workpiece conveying.

[0019] A drive plate 13 is installed below the floating table 3. The drive plate 13 is fixedly connected to the inner wall of the cutting machine body 1 and is not rigidly connected to the floating table 3. The two move independently. The floating table 3 covers the drive plate 13 laterally and can prevent most of the cutting slag and dust from falling directly to the transmission structure below, forming an upper layer of protection. Two sets of adapter frames 14 are fixed to the upper wall of the drive plate 13. A bidirectional lead screw 15 is rotatably installed between the two sets of adapter frames 14. The left and right threads of the bidirectional lead screw 15 have opposite directions. Drive sleeves 16 are screwed onto the two threads of the bidirectional lead screw 15, and the upper ends of the two drive sleeves 16 are fixedly connected to the support arms 6 on the corresponding sides.

[0020] A clamping drive motor 17 is also fixed to the upper wall of the drive plate 13. The output shaft of the clamping drive motor 17 is arranged perpendicularly to the axis of the bidirectional lead screw 15, and a bevel gear transmission group 18 is provided between them. The reversing transmission is achieved through bevel gear meshing. A sealing cover is provided on the outside of the bevel gear transmission group 18 to enclose the bevel gear meshing pair inside, preventing cutting dust from entering the tooth surface and causing wear, and ensuring transmission accuracy and service life. When the clamping drive motor 17 is started, it drives the bidirectional lead screw 15 to rotate through the bevel gear transmission group 18, which in turn drives the two drive sleeves 16 to move synchronously towards or away from each other.

[0021] The upper wall of the drive plate 13 is also fixed with a common guide bar 19 parallel to the bidirectional lead screw 15. The side wall of the drive sleeve 16 is fixed with a synchronous connecting plate 20. The synchronous connecting plate 20 and the common guide bar 19 are slidably adapted to provide auxiliary guidance and anti-torsional support for the translation of the drive sleeve, ensuring smooth movement. The bidirectional lead screw 15 is fitted with two corrugated dustproof sleeves 21. The outer ends of the two corrugated dustproof sleeves 21 are respectively sealed to the corresponding side adapter frame 14, and the inner ends are respectively sealed to the corresponding side drive sleeve 16. They extend and retract synchronously with the drive sleeve, forming a full-stroke sealed protection for the lead screw transmission pair.

[0022] The floating platform 3 has positioning guide grooves 5 extending along the width direction on both sides. Two sets of support arms 6 pass through the positioning guide grooves 5 on the corresponding sides respectively. The support arms 6 can simultaneously slide vertically and horizontally relative to each other along the positioning guide grooves 5. The upper end of the support arm 6 extends upward through the table surface of the sword grid worktable 2. A positioning block 7 is fixed at the top of the left support arm as a centering reference surface, and a clamping block 8 is fixed at the top of the right support arm.

[0023] The clamping block 8 has a floating groove 22 inside, and the floating block 9 is slidably connected in the floating groove 22. A limit spring rod 23 is fixed between the floating block 9 and the bottom of the floating groove 22. In the natural state, the limit spring rod 23 pushes the floating block 9 to extend outward. During the clamping process, the floating block 9 first contacts the side of the workpiece, and the spring is compressed to release the clamping force, so as to avoid excessive rigid stress accumulating inside the thin-walled plate. When the clamp is released, the spring gradually returns to its original position, the stress is released slowly, and the elastic rebound offset of the plate is reduced.

[0024] Specifically: In the initial state, the lifting drive 12 drives the floating table 3 to rise to its highest position, and the top of the conveying roller 4 extends out of the table surface of the sword grid worktable 2. At this time, the clamping working surfaces of the positioning block 7 and the clamping block 8 are flush with the side of the workpiece. The cooling plate blank is placed on the conveying roller 4 at the feeding end, and the conveying drive is started. Through the cooperation of the feeding drive roller and the discharging drive roller, the blank is automatically moved towards the cutting station along the feeding direction, without the need for frequent manual pushing and alignment.

[0025] After the blank is conveyed to the cutting station, the conveying drive stops, and the floating table does not descend temporarily. The clamping drive motor 17 is started, which drives the bidirectional lead screw 15 to rotate through the bevel gear transmission group 18. The two drive screw sleeves 16 move synchronously towards each other, driving the two side support arms 6 to move horizontally to center along the positioning guide groove 5. The positioning block 7 fits against one side of the workpiece to form a reference, and the floating block 9 of the other clamping block 8 contacts the other side of the workpiece. The limit spring rod 23 gradually compresses to release the clamping force, pushing the workpiece to the centering position and clamping it.

[0026] During this process, the workpiece is supported by the conveyor roller 4 throughout, without contacting the grating bars. The centering and pushing process is free of hard friction, which greatly reduces scratches on the bottom surface and makes it less likely to cause side deformation of thin-walled workpieces.

[0027] After centering and straightening, the blank has been centered and positioned. The clamping drive motor 17 rotates in the opposite direction, which drives the two drive screw sleeves 16 on both sides to move synchronously in opposite directions through the bidirectional lead screw 15. The support arm 6 then drives the positioning block 7 and the clamping block 8 to retract synchronously, releasing the constraint on the workpiece. The floating block 9 is reset to its initial state under the action of the limit spring rod 23, relieving the clamping stress.

[0028] Subsequently, the lifting drive 12 drives the floating platform 3 to descend smoothly along the lifting guide rail 10. Each conveying roller 4 synchronously retracts with the floating platform to below the table surface of the sword grid worktable 2. Under its own weight, the workpiece falls vertically and smoothly onto the grid bars as the lifting action progresses. Since the workpiece is already in the centered position after alignment, there is no lateral external force interference during the unloading process. The sheet metal can fall onto the worktable in a centered state under the friction of the conveying rollers 4, meeting the cutting and positioning requirements for the cooling plate before forming.

[0029] After the workpiece is stabilized, the laser cutting head of the cutting machine body 1 starts and completes the contour cutting operation of the cooling plate blank according to the preset processing path. Laser cutting is a non-contact processing method with no mechanical cutting reaction force. The workpiece can remain stable on the sword grid worktable 2 by its own weight without the need for additional clamping and fixing.

[0030] After processing is completed, the lifting drive 12 drives the floating table 3 to rise again, and the conveying roller 4 passes through the gap of the sword grid worktable 2 to lift the finished workpiece. The conveying drive is started to drive the conveying roller to rotate in the opposite direction, and the cut workpiece is automatically sent out of the equipment, so that the next blank can be loaded into the equipment to enter a new round of processing cycle.

[0031] Throughout the entire operation of the equipment, the floating platform 3 is always horizontally positioned between the sword grid worktable 2 and the lower drive plate 13, which can prevent most of the cutting slag and metal dust from falling directly onto the transmission components. Together with the corrugated dust cover 21 on the outside of the bidirectional lead screw 15, the sealing cover on the outside of the bevel gear transmission group 18, and the sealing end cover at the end of the conveyor roller 4, a multi-layer protective structure is formed, which effectively reduces transmission jamming and parts wear caused by dust intrusion, and extends the maintenance cycle and overall service life of the equipment.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser cutting machine for pretreatment of cooling plate forming, comprising a cutting machine body (1), wherein a sword grid worktable (2) is provided on the cutting machine body (1), characterized in that, Below the sword grid workbench (2) is a floating platform (3) that can be raised and lowered along the height direction. Several conveying rollers (4) are arranged on the upper wall of the floating platform (3) along the feeding direction. When the floating platform (3) rises, the conveying rollers (4) can pass through the gap of the sword grid workbench (2) to lift and transport the workpiece. The floating platform (3) has positioning guide grooves (5) on both sides. Two sets of support arms (6) that can move in opposite directions are slidably connected in the positioning guide grooves (5). The lower ends of the two sets of support arms (6) are connected to the fixed drive structure of the cutting machine body (1), and the upper ends are respectively fixed with positioning blocks (7) and clamping blocks (8). A floating block (9) is elastically connected to the side of the clamping block (8) facing the positioning block (7) along the clamping direction to buffer the clamping stress.

2. The laser cutting machine for pre-processing cooling plate forming according to claim 1, characterized in that, The inner sidewall of the cutting machine body (1) is fixed with a lifting guide rail (10) along the height direction, and the sidewall of the floating table (3) is provided with a lifting guide groove (11) that is slidably adapted to the lifting guide rail (10); a lifting drive component (12) is fixed below the floating table (3) for driving the floating table (3) to rise and fall vertically.

3. The laser cutting machine for pre-processing cooling plate forming according to claim 1, characterized in that, Below the floating platform (3) is a drive plate (13) fixedly connected to the inner wall of the cutting machine body (1). Two sets of adapter frames (14) are fixed on the upper wall of the drive plate (13). A bidirectional screw (15) is rotatably installed between the two sets of adapter frames (14). The left and right threads of the bidirectional screw (15) are rotated in opposite directions. Drive sleeves (16) are screwed onto the two threads of the bidirectional screw (15). The upper ends of the two drive sleeves (16) are fixedly connected to the support arms (6) on the corresponding sides. A clamping drive motor (17) is fixed on the upper wall of the drive plate (13). A bevel gear transmission group (18) is provided between the output end of the clamping drive motor (17) and the bidirectional screw (15). The bidirectional screw (15) is driven to rotate through meshing transmission.

4. The laser cutting machine for pre-processing cooling plate forming according to claim 3, characterized in that, The upper wall of the drive plate (13) is also fixed with a common optical bar (19) parallel to the bidirectional lead screw (15), and the side wall of the drive screw sleeve (16) is fixed with a synchronous connecting plate (20). The synchronous connecting plate (20) and the common optical bar (19) are slidably adapted. The outside of the bidirectional lead screw (15) is fitted with two corrugated dustproof sleeves (21). The outer ends of the two corrugated dustproof sleeves (21) are respectively sealed to the corresponding side adapter (14), and the inner ends are respectively sealed to the corresponding side drive screw sleeve (16).

5. The laser cutting machine for pre-processing cooling plate forming according to claim 1, characterized in that, The clamping block (8) has a floating groove (22) inside. The floating block (9) is slidably connected in the floating groove (22). A limit spring rod (23) is fixed between the floating block (9) and the bottom of the floating groove (22). In the natural state, the limit spring rod (23) pushes the floating block (9) to extend outward.

6. The laser cutting machine for pre-processing cooling plate forming according to claim 1, characterized in that, Several conveying rollers (4) are divided into feed drive rollers, driven rollers and discharge drive rollers in sequence along the feeding direction. The ends of the roller shafts of the feed drive rollers and the discharge drive rollers are driven by conveying drive components.

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