Plane plate fixing structure of laser cutting machine

Abstract

The utility model discloses a laser cutting machine plane plate fixing structure which comprises a workbench, first linear driving devices are arranged on the two sides of the workbench, a pair of portal frames are symmetrically arranged on the tops of the two first linear driving devices, and second linear driving devices are arranged on the tops of the portal frames. A pair of vertical lifting pressing block mechanisms is arranged on one side of the second linear driving device; the vertical lifting pressing block mechanism comprises two belt wheel sets arranged in parallel, the belt wheel sets are in transmission connection through synchronous belts, one side of a driving wheel of each belt wheel set is connected with a gear motor, the gear motors are connected with belt wheel shafts through couplings, and belt fixing buckles are arranged at the same positions of the inner side surfaces of the two synchronous belts. A T-shaped rod is fixedly connected between the two belt fixing buckles, and a fixing plate is vertically connected to the bottom of the T-shaped rod; the problems that in the prior art, a plate fixing structure is insufficient in size adaptability and poor in thickness compatibility are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of laser cutting machine technology, and in particular to a fixing structure for a flat plate in a laser cutting machine. Background Technology

[0002] Laser cutting technology, due to its high precision and efficiency, has been widely used in the processing of flat sheet materials such as metals, plastics, and composite materials. During the laser cutting process, the stable fixation of the sheet material is a crucial step in ensuring cutting accuracy and surface quality.

[0003] However, traditional mechanical clamps mostly use a fixed-spaced clamping point design, which can only adapt to plates of specific widths or lengths. For large-format or irregularly shaped plates, the clamp position needs to be manually adjusted and multiple clamping operations are required, which is cumbersome and makes it difficult to guarantee positioning accuracy. Lacking a pressure adaptive mechanism, the same clamp cannot meet the clamping force requirements of plates of different thicknesses, often requiring the replacement of pressure heads with different hardness or the addition of shims, which significantly reduces production efficiency. Utility Model Content

[0004] To address the problems mentioned above, this utility model provides a planar plate fixing structure for laser cutting machines, which effectively solves the problems of insufficient dimensional adaptability and poor thickness compatibility of existing plate fixing structures.

[0005] This utility model adopts the following technical solution: a planar plate fixing structure for a laser cutting machine, including a worktable, with first linear drive devices on both sides of the worktable, a pair of gantry frames symmetrically arranged on the top of the two first linear drive devices, a second linear drive device on the top of the gantry frames, and a pair of vertical lifting and pressing block mechanisms on one side of the second linear drive devices; the vertical lifting and pressing block mechanism includes two sets of parallel pulley groups, each set of pulley groups is connected by synchronous belt transmission, a reduction motor is connected to one side of the drive wheel of each set of pulley groups, the reduction motor is connected to the pulley shaft through a coupling, belt fixing buckles are arranged at the same position on the inner surface of the two synchronous belts, a T-shaped rod is fixedly connected between the two belt fixing buckles, and a fixing plate is vertically connected to the bottom of the T-shaped rod.

[0006] Furthermore, the first linear drive device includes a first rack and a first linear slide rail. The first rack and the first linear slide rail are fixed parallel to each other on both sides of the top of the worktable. Two sliding plates are slidably connected on the first linear slide rail. A first servo motor is installed on the top of each sliding plate. The output shaft of the first servo motor is fixedly connected to a first gear via a key. The two first gears are respectively meshed with the corresponding first rack. A pair of columns of the gantry frame are respectively fixedly installed on the top of the corresponding two sliding plates.

[0007] Furthermore, the second linear drive device includes a second linear slide rail horizontally mounted between a pair of gantry frames and a second rack mounted on the crossbeam of the gantry frame. Two T-shaped plates are slidably connected on the second linear slide rail. A second servo motor is mounted on the top of each T-shaped plate. The output shaft of the second servo motor is fixed with a second gear by a key connection. The two second gears are respectively meshed with the second rack. The two vertical lifting pressure block mechanisms are respectively fixed to the side walls of the two T-shaped plates.

[0008] Furthermore, the pulley shaft of the pulley assembly is rotatably mounted on the side wall of the T-shaped plate via bearings, the reduction motor is mounted on the back side of the T-shaped plate, and the output shaft of the reduction motor passes through the through hole of the T-shaped plate and is connected to the drive pulley of the pulley assembly.

[0009] Furthermore, an elastic buffer layer is provided at the bottom of the fixing plate, and the elastic buffer layer is made of silicone rubber or polyurethane.

[0010] The advantages of this invention are as follows: Through the three-axis linkage of the first linear drive device (X-axis), the second linear drive device (Y-axis), and the vertical lifting pressure block mechanism (Z-axis), and the independent driving of these three axes, the clamping point can be precisely located at the edge area of ​​irregular plates, achieving contour-following clamping and meeting the fixing needs of complex scenarios such as irregularly shaped plates and partial cutting. The independent movement of the double T-shaped plates in the Y-axis direction allows for segmented clamping of different areas of the plate, avoiding deformation caused by stress concentration during cutting. The vertical lifting pressure block mechanism provides sufficient lifting stroke to cover clamping requirements from ultra-thin plates to thick plates, avoiding the problems of insufficient stroke leading to clamping failure or over-pressure in traditional clamps. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the first linear drive device of this utility model;

[0013] Figure 3 This is a schematic diagram of the first linear drive device of this utility model;

[0014] Figure 4 This is a schematic diagram of the vertical lifting pressure block mechanism of this utility model.

[0015] In the diagram, 1-workbench, 2-first linear drive device, 3-gantry frame, 4-second linear drive device, 5-vertical lifting and pressing block mechanism, 51-pulley group, 52-synchronous belt, 53-gear motor, 54-belt fixing buckle, 55-T-shaped rod, 56-fixed plate, 57-elastic buffer layer, 21-first rack, 22-first linear slide rail, 23-sliding plate, 24-first servo motor, 25-first gear, 41-second rack, 42-second linear slide rail, 43-T-shaped plate, 44-second servo motor, 45-second gear. Detailed Implementation

[0016] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0017] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] See Figures 1-4 As shown, a planar plate fixing structure for a laser cutting machine includes a worktable 1. First linear drive devices 2 are arranged on both sides of the worktable 1. A pair of gantry frames 3 are symmetrically arranged on the top of the two first linear drive devices 2. A second linear drive device 4 is arranged on the top of the gantry frames 3. A pair of vertical lifting and pressing mechanisms 5 are arranged on one side of the second linear drive device 4. The vertical lifting and pressing mechanism 5 includes two sets of parallel pulley groups 51. Each set of pulley groups 51 is connected by a synchronous belt 52. A reduction motor 53 is connected to one side of the drive wheel of each set of pulley groups 51. The reduction motor 53 is connected to the pulley shaft through a coupling. Belt fixing buckles 54 are arranged at the same position on the inner surface of the two synchronous belts 52. A T-shaped rod 55 is fixedly connected between the two belt fixing buckles 54. A fixing plate 56 is vertically connected to the bottom of the T-shaped rod 55.

[0019] The first linear drive device 2 includes a first rack 21 and a first linear slide rail 22. The first rack 21 and the first linear slide rail 22 are fixed parallel to each other on both sides of the top of the workbench 1. Two sliding plates 23 are slidably connected on the first linear slide rail 22. A first servo motor 24 is installed on the top of each sliding plate 23. The output shaft of the first servo motor 24 is fixedly connected to a first gear 25 by a key. The two first gears 25 are respectively meshed with the corresponding first rack 21. A pair of gantry 3 columns are respectively fixedly installed on the top of the corresponding two sliding plates 23, so that the gantry 3 can move smoothly and adapt to the clamping requirements of plates of different lengths.

[0020] The second linear drive device 4 includes a second linear slide rail 42 horizontally mounted between a pair of gantry frames 3 and a second rack 41 mounted on the crossbeam of the gantry frame. Two T-shaped plates 43 are slidably connected on the second linear slide rail 42. A second servo motor 44 is mounted on the top of each T-shaped plate 43. The output shaft of the second servo motor 44 is fixed to a second gear 45 via a key connection. The two second gears 45 are respectively meshed with the second rack 41. Two vertical lifting pressure block mechanisms 5 are respectively fixed to the side walls of the two T-shaped plates 43. The two T-shaped plates 43 can move independently along the Y-axis, supporting the setting of multiple pressing points in the length direction of the plate, adapting to the clamping requirements of plates of different widths and preventing deformation in the middle of long plates.

[0021] The pulley shaft of the pulley assembly 51 is rotatably mounted on the side wall of the T-shaped plate 43 via bearings. The geared motor 53 is mounted on the back side of the T-shaped plate 43, and the output shaft of the geared motor 53 passes through the through hole of the T-shaped plate 43 and is connected to the drive pulley of the pulley assembly 51. The pulley assembly 51 and the geared motor 51 adopt a split mounting structure, which allows for quick replacement when a single component is damaged, reducing maintenance costs.

[0022] The bottom of the fixed plate 56 is provided with an elastic buffer layer 57. The elastic buffer layer 57 is made of silicone rubber or polyurethane. The elastic buffer layer disperses the clamping force through deformation, avoiding scratches or indentations caused by direct contact with the hard plate. It is especially protective of mirror and coated plates. When the elastic buffer layer 57 comes into contact with the plate, it deforms, which can provide uniform clamping force and avoid damage to the surface of the plate by hard contact.

[0023] Working principle: The operator controls the two first servo motors 24 of the first linear drive device 2 to operate synchronously according to the width of the board. The first servo motors 24 drive the first gear 25 to rotate via a key connection. Since the first gear 25 meshes with the first rack 21 fixed on the table, the gear and rack transmission converts the rotational motion into linear motion. The rotation of the first gear 25 drives the sliding plate 23 to slide laterally along the first linear slide rail 22, so that the spacing between the columns of the pair of gantry frames 3 matches the width of the board, forming an adaptive clamping space. The second servo motor 44 of the second linear drive device 4 drives the second gear 45 to rotate. The second gear 45 meshes with the second rack 41 on the crossbeam of the gantry frame, driving the T-shaped plate 43 to move longitudinally along the second linear slide rail 42. The independent movement of the two T-shaped plates 43 allows the vertical lifting pressure block mechanism 5 to be precisely positioned above the area where the board is to be clamped. Simultaneously, two geared motors 53 are controlled to drive the drive wheel of the pulley group 51 to rotate through the coupling. The synchronous belt 52 circulates under the transmission of the two sets of pulleys, which drives the belt fixing buckle 54 fixed on the inner side of the two synchronous belts to rise and fall synchronously. The T-shaped rod 55, which is rigidly connected to the belt fixing buckle 54, moves vertically accordingly, and finally drives the fixing plate 56 to press down onto the surface of the plate. The elastic buffer layer 57 at the bottom of the fixing plate 56 deforms when it contacts the plate, which can provide uniform pressing force and avoid damage to the surface of the plate by hard contact.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A planar plate fixing structure for a laser cutting machine, comprising a worktable (1), characterized in that: The workbench (1) is provided with a first linear drive device (2) on both sides. A pair of gantry frames (3) are symmetrically arranged on the top of the two first linear drive devices (2). A second linear drive device (4) is arranged on the top of the gantry frame (3). A pair of vertical lifting and pressing block mechanisms (5) are arranged on one side of the second linear drive device (4). The vertical lifting and pressing block mechanism (5) includes two sets of parallel pulley groups (51). Each set of pulley groups (51) is connected by a synchronous belt (52). A reduction motor (53) is connected to one side of the drive wheel of each set of pulley groups (51). The reduction motor (53) is connected to the pulley shaft through a coupling. Belt fixing buckles (54) are provided at the same position on the inner surface of the two synchronous belts (52). A T-shaped rod (55) is fixedly connected between the two belt fixing buckles (54). A fixing plate (56) is vertically connected to the bottom of the T-shaped rod (55).

2. The laser cutting machine planar plate fixing structure according to claim 1, characterized in that: The first linear drive device (2) includes a first rack (21) and a first linear slide rail (22). The first rack (21) and the first linear slide rail (22) are fixed parallel to each other on both sides of the top of the workbench (1). Two sliding plates (23) are slidably connected on the first linear slide rail (22). A first servo motor (24) is installed on the top of each sliding plate (23). The output shaft of the first servo motor (24) is fixed with a first gear (25) by a key. The two first gears (25) are respectively meshed with the corresponding first rack (21). The columns of a pair of gantry frames (3) are respectively fixedly installed on the top of the corresponding two sliding plates (23).

3. The laser cutting machine planar plate fixing structure according to claim 2, characterized in that: The second linear drive device (4) includes a second linear slide rail (42) horizontally mounted between a pair of gantry frames (3) and a second rack (41) mounted on the crossbeam of the gantry frame. Two T-shaped plates (43) are slidably connected on the second linear slide rail (42). A second servo motor (44) is mounted on the top of each T-shaped plate (43). The output shaft of the second servo motor (44) is fixed with a second gear (45) by a key. The two second gears (45) are respectively meshed with the second rack (41). The two vertical lifting pressure block mechanisms (5) are respectively fixed to the side walls of the two T-shaped plates (43).

4. The laser cutting machine planar plate fixing structure according to claim 3, characterized in that: The pulley shaft of the pulley assembly (51) is rotatably mounted on the side wall of the T-shaped plate (43) via bearings. The geared motor (53) is mounted on the back side of the T-shaped plate (43), and the output shaft of the geared motor (53) passes through the through hole of the T-shaped plate (43) and is connected to the drive pulley of the pulley assembly (51).

5. The laser cutting machine planar plate fixing structure according to claim 4, characterized in that: The bottom of the fixing plate (56) is provided with an elastic buffer layer (57), which is made of silicone rubber or polyurethane.

Images