Sheet clamping mechanism
By combining the design of conveyor rollers, side clamping protection, and pressing structure, the deformation and curling problems during laser cutting of thin sheets are solved, achieving stable conveying and smooth cuts during the cutting process, thus improving the cutting quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2026-03-24
AI Technical Summary
In laser cutting of thin sheets, existing technologies often result in deformation and curling of the sheets.
The design employs a combination of conveyor rollers, side clamping protection, placement rods, side pressing structures, and front and rear pressing parts. The conveyor rollers drive the sheet to move, while the side clamping protection and side pressing structures provide stable support and pressure for the sheet. The front and rear pressing parts dynamically press the cut during the cutting process to prevent deformation and warping.
It achieves stable feeding and smooth cut when laser cutting thin sheets, avoiding deformation and warping, and improving cutting quality.
Smart Images
Figure CN224026754U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of laser cutting, specifically a sheet clamping mechanism. Background Technology
[0002] Laser cutting machines utilize the laser emitted by a laser to focus a high-power laser beam, which is then irradiated onto the surface of a workpiece, causing the workpiece to melt. As the relative position of the beam and the workpiece moves, a kerf is eventually formed in the material, thus achieving the purpose of cutting. No mold is required, and it is commonly used when cutting thin materials.
[0003] Sheet material is a thin material. Due to the characteristics of the material, it is easy to deform when cut with a laser cutting machine. The clamping structure is fixed in position and only statically clamps the profile placed on the worktable. The problem of deformation and curling still exists. Utility Model Content
[0004] In view of the problems existing in the prior art, this utility model discloses a sheet clamping mechanism. The technical solution adopted includes a worktable, conveying rollers, a conveying motor, side clamping protection, a central through groove, placement rods, a side pressing structure, a rear mounting seat, a lifting screw, a vertical guide shaft, a limiting plate, a mounting block, a mounting rail, a moving screw, an I-shaped block, an electrical connection box, wiring, a laser cutting machine, a laser cutting head, and front and rear side pressing parts. Several conveying rollers are arranged in the worktable, which are driven by the conveying motor. The worktable is equipped with side clamping protection, which can ensure stable conveying of the sheet during sheet conveying. A central through groove is opened in the central area, and placement rods are fixed on the left and right sides of the opening of the central through groove. The upper surface of the placement rod is on the same plane as the upper horizontal tangent of the conveying roller, that is, the left and right sides of the cutting position are stably supported by the placement rod. A side pressing structure is provided on the placement rod, which presses the sheet at the placement rod. This position is related to the cutting position. The close proximity of the cutting positions allows for effective clamping. A rear mounting base and a laser cutter are fixed to the rear side of the worktable. A motor-driven lifting screw is rotatably mounted on the rear mounting base, and a vertical guide shaft is fixedly mounted. A limit plate is fixed on the vertical guide shaft. The mounting block is installed in conjunction with the lifting screw and is movably fitted with the vertical guide shaft. An integrally formed mounting rail is installed on the front side of the mounting block. A motor-driven moving screw is rotatably mounted in the mounting rail. This motor is powered by a battery. The I-shaped block is placed in the mounting rail and installed in conjunction with the moving screw. An electrical connection box is fixed to the end face of the right protruding part of the I-shaped block. The electrical connection box is connected to the laser cutter through wiring. The laser cutting head is set at the lower part of the I-shaped block. With the operation of the motor driving the moving screw and the manual drive of the lifting screw, it can cut sheets of different thicknesses. The front and rear sides of the lower part of the I-shaped block are provided with front and rear clamping parts to dynamically clamp the cut position during the cutting process, keeping the cut flat and preventing deformation, curling, or warping.
[0005] As a preferred technical solution of this utility model, the side clamping protection includes a bidirectional lead screw, a front-to-back guide shaft, a knob, and a U-shaped plate. The bidirectional lead screw is rotatably installed in the front-to-back direction in the worktable, and the front-to-back guide shaft is fixedly installed. The vertical part of the U-shaped plate is installed in conjunction with the bidirectional lead screw and is movably fitted with the front-to-back guide shaft. The bidirectional lead screw is driven by the knob. The U-shaped plate has a through mounting groove in which a rubber roller is rotatably installed. The lower surface of the horizontal part of the U-shaped plate has an arc-shaped groove to avoid interference with the conveyor roller. The knob is manually rotated according to the width of the sheet in the front-to-back direction to drive the bidirectional lead screw to rotate, so that the two U-shaped plates approach synchronously and are clamped by the rubber roller without affecting the normal conveying of the sheet.
[0006] As a preferred technical solution of this utility model, the side clamping structure includes a rotating stud and a pressure plate. The rotating stud is rotatably installed on the front end of the upper surface of the two placement rods, and a vertical shaft is fixedly installed at the rear end of each rod. The front end of the pressure plate is fitted with the rotating stud, and the rear end is movably fitted with the vertical shaft. A motor is installed on the bottom surface of the placement rod. This motor is powered by a storage battery and drives the rotating stud.
[0007] As a preferred technical solution of this utility model, the front and rear pressing parts include a bending rod, a plate, a movable shaft, a top plate, a spring, a lower mounting frame, and a pressure cylinder. The bending rod is integrally formed on the front and rear sides of the lower part of the I-shaped block. The lower end of the bending rod is fixed to the plate. A through hole is opened on the plate, and the movable shaft passes through the through hole. The top plate is fixed to the top of the plate, and the bottom is connected to the lower mounting frame. The top plate and the plate are connected by a spring. The pressure cylinder is rotatably installed in the lower mounting frame. When the height of the I-shaped block is adjusted by the lifting screw, the pressure cylinder will contact the sheet surface before the laser cutting head. As the I-shaped block drives the laser cutting head to continue to move downward, the spring is stretched. After being stretched, the selected spring can make the lower mounting frame and the pressure cylinder installed below the movable shaft stably press the sheet. The pressure cylinders on the front and rear sides move together with the I-shaped block and the laser cutting head, which can always press the sheet near the cutting point. Dynamic pressing can effectively prevent deformation at the cutting point.
[0008] As a preferred technical solution of this utility model, the pressure cylinder is made of rigid material.
[0009] The beneficial effects of this utility model are as follows: the sheet material is conveyed by the conveying roller, the conveying motor and the side clamping protection, and the position to be cut is moved to the bottom of the laser cutting head. The side pressing structure set on the placement rod presses the left and right sides of the sheet material at the cutting point. The front and rear side pressing parts dynamically press the cutting position during the cutting process to keep the cutting point flat and avoid deformation, curling or lifting. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the structure of this utility model;
[0011] Figure 2 This is a schematic diagram of some components of the present invention;
[0012] Figure 3 This is a bottom view of some components of the present invention.
[0013] In the diagram: 1. Workbench; 2. Conveyor roller; 3. Conveyor motor; 4. Bidirectional lead screw; 5. Forward and backward guide shaft; 6. Knob; 7. U-shaped plate; 8. Mounting groove; 9. Rubber roller; 10. Central through groove; 11. Placement rod; 12. Rotating stud; 13. Pressure plate; 14. Rear mounting seat; 15. Lifting lead screw; 15. Vertical guide shaft; 16. Limiting plate; 17. Mounting block; 18. Mounting rail; 19. Moving lead screw; 20. I-shaped block; 21. Electrical connection box; 22. Wiring; 23. Laser cutter; 23. Laser cutting head; 24. Bending rod; 25. Plate; 26. Movable shaft; 27. Top plate; 28. Spring; 29. Lower mounting frame; 30. Pressure cylinder. Detailed Implementation
[0014] Example 1
[0015] like Figures 1 to 3 As shown, this utility model discloses a sheet clamping mechanism. The technical solution includes a worktable 1, conveying rollers 2, a conveying motor 3, side clamping protection, a central through groove 10, placement rods 11, a side pressing structure, a rear mounting base 14, a lifting screw 15, a vertical guide shaft 151, a limiting plate 16, a mounting block 17, a mounting rail 18, a moving screw 19, an I-shaped block 20, an electrical connection box 21, wiring 22, a laser cutting machine 23, a laser cutting head 231, and front and rear side pressing parts. Several conveying rollers 2 are arranged in the worktable 1, and the conveying rollers 2 are driven by the conveying motor 3. The worktable 1 is provided with side clamping protection. A central through groove 10 is opened in the central area. Placement rods 11 are fixed on the left and right sides of the opening of the central through groove 10. The upper surface of the placement rods 11 is on the same plane as the upper horizontal tangent of the conveying rollers 2. A side pressing structure is provided on the placement rods 11. The workbench 1 has a rear mounting base 14 and a laser cutter 23 fixed on the rear side. A lifting screw 15 driven by a motor is rotatably mounted on the rear mounting base 14. A vertical guide shaft 151 is fixedly mounted on the vertical guide shaft 151. A limit plate 16 is fixed on the vertical guide shaft 151. A mounting block 17 is installed in conjunction with the lifting screw 15 and is movably fitted with the vertical guide shaft 151. A mounting rail 18 is integrally formed on the front side of the mounting block 17. A moving screw 19 driven by a motor is rotatably mounted in the mounting rail 18. This motor is powered by a battery. An I-shaped block 20 is placed in the mounting rail 18 and is installed in conjunction with the moving screw 19. An electrical connection box 21 is fixed to the end face of the right protruding part of the I-shaped block 20. The electrical connection box 21 is connected to the laser cutter 23 through a wiring 22. A laser cutting head 231 is set at the lower part of the I-shaped block 20. Front and rear clamping parts are set on the front and rear sides of the lower part of the I-shaped block 20.
[0016] As a preferred technical solution of this utility model, the side clamping protection can provide stable protection for the conveying of sheet materials. Specifically, a bidirectional lead screw 4 is rotatably installed in the workbench 1 in the front-to-back direction, and a front-to-back guide shaft 5 is fixedly installed. The vertical part of the U-shaped plate 7 is installed in conjunction with the bidirectional lead screw 4 and is movably fitted with the front-to-back guide shaft 5. The bidirectional lead screw 4 is driven by a knob 6. A through mounting groove 8 is opened on the U-shaped plate 7, and a rubber roller 9 is rotatably installed in the mounting groove 8. The lower surface of the horizontal part of the U-shaped plate 7 has an arc-shaped groove to avoid interference with the conveying roller 2.
[0017] As a preferred technical solution of this utility model, the side clamping structure is as follows: rotating studs 12 are rotatably installed on the front end of the upper surface of the two placement rods 11, and vertical shafts are fixedly installed at the rear end of the two rods 11. The front end of the pressure plate 13 is fitted with the rotating studs 12, and the rear end is movably fitted with the vertical shaft. A motor is set on the bottom surface of the placement rods 11. This motor is powered by a storage battery and drives the rotating studs 12.
[0018] As a preferred technical solution of this utility model, the front and rear pressing parts can dynamically press along with the movement of the laser cutting head, and always press the cutting position. The specific setting is that a bent rod 24 is integrally formed on the front and rear sides of the lower part of the I-shaped block 20. The lower end of the bent rod 24 is fixed to the plate 25. A through hole is opened on the plate 25, and the movable shaft 26 passes through the through hole. The top plate 27 is fixed at the top, and the bottom is connected to the lower mounting frame 29. The top plate 27 and the plate 25 are connected by a spring 28. The pressure cylinder 30 is rotatably installed in the lower mounting frame 29.
[0019] As a preferred technical solution of this utility model, the pressure cylinder 30 is made of rigid material.
[0020] The working principle of this utility model is as follows: During use, the knob is manually rotated according to the width of the sheet in the front and back directions, which drives the bidirectional lead screw to rotate, so that the two U-shaped plates approach synchronously and are clamped by rubber rollers. At the same time, the normal conveying of the sheet is not affected. When the height of the I-shaped block is adjusted by the lifting lead screw, the pressure cylinder will contact the surface of the sheet before the laser cutting head. As the I-shaped block drives the laser cutting head to continue to move down, the spring is stretched. After being stretched, the selected spring can make the lower mounting frame and pressure cylinder installed below the movable shaft stably press the sheet. The pressure cylinders on the front and back sides move together with the I-shaped block and the laser cutting head, which can always press the sheet near the cutting point, achieving dynamic pressing and effectively preventing deformation at the cutting point.
[0021] Components not described in detail in this article are existing technologies.
[0022] While the specific embodiments of this utility model have been described in detail above, this utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model. Modifications or variations that do not involve creative labor are still within the protection scope of this utility model.
Claims
1. A sheet clamping mechanism, comprising a worktable (1), a conveying roller (2), and a conveying motor (3), characterized in that: Includes side clamping protection, central through groove (10), placement rod (11), side pressing structure, rear mounting base (14), lifting screw (15), vertical guide shaft (151), limit plate (16), mounting block (17), mounting rail (18), moving screw (19), I-shaped block (20), electrical connection box (21), wiring (22), laser cutting machine (23), laser cutting head (231), and front and rear side pressing parts; the worktable (1) is provided with Several conveyor rollers (2) are driven by a conveyor motor (3); the worktable (1) is provided with side clamping protection, and a central through groove (10) is opened in the central area. The left and right sides of the opening of the central through groove (10) are fixed with placement rods (11); the upper surface of the placement rod (11) is in the same plane as the upper horizontal tangent of the conveyor roller (2); a side pressing structure is provided on the placement rod (11); a rear mounting seat (14) and a laser cutter are fixed on the rear side of the worktable (1). A cutting machine (23); a lifting screw (15) driven by a motor is rotatably mounted on the rear mounting base (14), and a vertical guide shaft (151) is fixedly mounted on it; a limiting plate (16) is fixed on the vertical guide shaft (151); the mounting block (17) is installed in conjunction with the lifting screw (15) and is movably fitted with the vertical guide shaft (151); the front side of the mounting block (17) is integrally formed with a mounting rail (18), and a moving screw driven by a motor is rotatably mounted in the mounting rail (18). (19) This motor is powered by a battery; the I-shaped block (20) is placed in the mounting rail (18) and installed in conjunction with the moving lead screw (19); the end face of the right protruding part of the I-shaped block (20) is fixed with an electrical connection box (21), the electrical connection box (21) is connected to the laser cutting machine (23) through a wiring (22), and a laser cutting head (231) is provided at the lower part of the I-shaped block (20); front and rear pressing parts are provided on the front and rear sides of the lower part of the I-shaped block (20).
2. The sheet clamping mechanism according to claim 1, characterized in that: The side clamping protection includes a two-way lead screw (4), a front-to-back guide shaft (5), a knob (6), and a U-shaped plate (7); the two-way lead screw (4) is rotatably installed in the worktable (1) in the front-to-back direction, and the front-to-back guide shaft (5) is fixedly installed; the vertical part of the U-shaped plate (7) is installed in conjunction with the two-way lead screw (4) and is movably fitted with the front-to-back guide shaft (5); the two-way lead screw (4) is driven by the knob (6).
3. The sheet clamping mechanism according to claim 2, characterized in that: The U-shaped plate (7) has a through mounting groove (8) in which a rubber roller (9) is rotated and installed.
4. The sheet clamping mechanism according to claim 3, characterized in that: The lower surface of the horizontal portion of the U-shaped plate (7) has an arc-shaped groove to avoid interference with the conveyor roller (2).
5. A sheet clamping mechanism according to claim 1, characterized in that: The lateral clamping structure includes a rotating stud (12) and a pressure plate (13); the rotating stud (12) is rotatably installed on the front end of the upper surface of the two placement rods (11), and a vertical shaft is fixedly installed at the rear end; the front end of the pressure plate (13) is fitted with the rotating stud (12), and the rear end is movably fitted with the vertical shaft; a motor is provided on the bottom surface of the placement rod (11), which is powered by a battery and drives the rotating stud (12).
6. The sheet clamping mechanism according to claim 1, characterized in that: The front and rear pressing parts include a bent rod (24), a plate (25), a movable shaft (26), a top plate (27), a spring (28), a lower mounting frame (29), and a pressure cylinder (30); the lower part of the I-shaped block (20) is integrally formed with the bent rod (24) on the front and rear sides, and the lower end of the bent rod (24) is fixed to the plate (25); the plate (25) has a through hole, the movable shaft (26) passes through the through hole, the top plate (27) is fixed at the top, and the bottom is connected to the lower mounting frame (29); the top plate (27) and the plate (25) are connected by a spring (28); the pressure cylinder (30) is rotatably installed in the lower mounting frame (29).
7. A sheet clamping mechanism according to claim 6, characterized in that: The pressure cylinder (30) is made of rigid material.