A bed structure of a laser cutting machine

Abstract

The utility model discloses a bed structure of laser cutting machine, including two muscle boards of mutual parallel arrangement, equal interval is provided with a plurality of reinforcing bars between two muscle board insides, and the both ends between two muscle board insides are provided with fixed support connecting plate, and the inside of two muscle boards and the inside of reinforcing bar are provided with the dust extraction air duct of intercommunication, and the outer surface of two muscle boards all is provided with Z type protective cover, and Z type protective cover top one end is along horizontal equal interval and is provided with a plurality of fixed bolts. The utility model has the beneficial effects that: the utility model designs reasonable, and the structure is stable and practical, and its muscle board outside heat dissipation fin takes micron scale scale shape turbulence unit, can accelerate the heat dissipation of bed body, and Z type protective cover has the protection and the heat conduction function, and cooperates the heat conduction sheet of graphene and exports the heat in bed body, and the air cooler and the air bellow form the active cooling circulation, and strengthen the heat dissipation, prevent the deformation of bed body and guide rail, guarantee laser head precision, improve cutting quality, and be suitable for the use widely.

Description

Technical Field

[0001] This utility model relates to the field of laser cutting machine technology, specifically to a bed structure for a laser cutting machine. Background Technology

[0002] Laser cutting involves focusing a laser beam emitted from a laser source into a high-power-density beam via an optical path system. This beam irradiates the workpiece surface, causing it to reach its melting or boiling point. Simultaneously, high-pressure gas, coaxial with the beam, blows away the molten or vaporized metal. 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.

[0003] However, with the continuous improvement of production requirements, higher requirements are also placed on the cutting power of laser cutting machines. High-power laser cutting machines generate a lot of heat during cutting. After the machine bed absorbs a lot of heat, it is easy to cause deformation of the machine tool and guide rail, which reduces the motion accuracy of the laser head and the cutting quality. Further development and improvement are needed. Utility Model Content

[0004] The purpose of this invention is to provide a bed structure for a laser cutting machine that addresses the problem that existing high-power laser cutting machines generate a large amount of heat during cutting, and that the bed can easily deform the internal guide rails after absorbing a large amount of heat, resulting in reduced motion accuracy of the laser head and lower cutting quality.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: a bed structure for a laser cutting machine, comprising two parallel stiffening plates, with a plurality of reinforcing ribs equidistantly arranged between the inner sides of the two stiffening plates, and a fixed support connecting plate between the two ends of the inner sides of the two stiffening plates, with interconnected dust extraction ducts inside the two stiffening plates and the reinforcing ribs, and Z-shaped protective covers on the outer surfaces of the two stiffening plates, with a plurality of fixing bolts equidistantly arranged along the transverse direction at one end of the top of the Z-shaped protective cover, one end of the fixing bolts passing through the Z-shaped protective cover and threadedly connected to the stiffening plate, with a plurality of heat dissipation fins equidistantly arranged along the transverse direction on the outer surface of one longitudinal side of the stiffening plate corresponding to the position of the Z-shaped protective cover, and an air box on the inner surface of the Z-shaped protective cover directly above the heat dissipation fins, and a cooling fan on both transverse outer surfaces of the stiffening plate, with two air chambers inside the air box, the air chambers being connected to the output end of the cooling fan at one end of the stiffening plate, and a plurality of air outlets equidistantly arranged at the bottom of the air box, the air outlets being connected to the interior of the air chambers.

[0006] Furthermore, the stiffening rib, the reinforcing rib, and the fixed support connecting plate are integrally cast structures.

[0007] Furthermore, several foot adjustment supports are equidistantly provided at the bottom of the stiffening plate.

[0008] Furthermore, a heat-conducting sheet made of graphene is provided at the connection between the Z-shaped protective cover and the rib plate.

[0009] Furthermore, the surface of the heat dissipation fins is provided with a large number of micron-sized turbulence units formed by laser engraving. The turbulence units are distributed in a scale-like manner to disrupt the laminar boundary layer of the cooling air and enhance the heat exchange efficiency between the airflow and the heat dissipation fins.

[0010] Furthermore, the air cooler is mounted on the lateral side surface of the rib plate via a fixed mounting plate, and integrates a semiconductor cooling chip and a centrifugal fan inside to continuously pump the cooled air into the air cavity.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model has a reasonable design, simple and stable structure, and strong practicality; the heat dissipation fins on the outside of the stiffener plate, with the help of micron-level scale-like turbulence units laser-engraved on the surface, disrupt the laminar flow boundary layer of the cooling air, greatly accelerating the heat dissipation efficiency of the bed; the Z-shaped protective cover not only provides protection, but also, in conjunction with the graphene heat-conducting sheet at the connection of the stiffener plate, can also dissipate the heat inside the bed, further improving the heat dissipation effect of the bed; at the same time, the cold air blowers (integrating semiconductor cooling chips and centrifugal fans) at both ends of the stiffener plate can pump the cooled air into the air chamber in the air box, and then evenly deliver it to the surface of the heat dissipation fins through the air outlet, forming an active cooling cycle, significantly enhancing the overall heat dissipation performance, effectively controlling the bed temperature, avoiding deformation of the bed and guide rails, thereby ensuring the movement accuracy of the laser head, improving the cutting quality, and making it suitable for widespread use. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another perspective; Figure 3 This is a schematic diagram of the cross-sectional structure of the present invention cut vertically along the longitudinal direction; Figure 4 for Figure 3 Enlarged view of section A; Figure 5 This is a schematic diagram of the cross-sectional structure of the air box in this utility model.

[0013] In the diagram: 1- Rib plate, 2- Reinforcing rib, 3- Fixed support connecting plate, 4- Z-shaped protective cover, 5- Fixing bolt, 6- Heat dissipation fins, 7- Air box, 8- Air cooler, 9- Air cavity, 10- Air outlet. Detailed Implementation

[0014] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] 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.

[0016] Combination Figures 1 to 5 The bed structure of a laser cutting machine shown includes two parallel stiffening plates 1. A plurality of reinforcing ribs 2 are equidistantly arranged between the inner sides of the two stiffening plates 1. A fixed support connecting plate 3 is arranged between the two ends of the inner sides of the two stiffening plates 1. Dust extraction ducts are interconnected inside the two stiffening plates 1 and the reinforcing ribs 2. Z-shaped protective covers 4 are provided on the outer surfaces of both stiffening plates 1. A plurality of fixing bolts 5 are equidistantly arranged along the transverse direction at one end of the top of the Z-shaped protective cover 4. One end of each fixing bolt 5 passes through the Z-shaped protective cover 4 and is threaded to the stiffening plate 1. A plurality of heat dissipation fins 6 are equidistantly arranged along the transverse direction on one longitudinal side of the outer surface of the stiffening plate 1, corresponding to the position of the Z-shaped protective cover 4. An air box 7 is provided on the inner surface of the Z-shaped protective cover 4 directly above the heat dissipation fins 6. Cooling fans 8 are provided on both transverse outer surfaces of the stiffening plates 1. Two air chambers 9 are provided inside the air box 7. The air chambers 9 are connected to the output end of the cooling fan 8 at one end of the stiffening plate 1. A plurality of air outlets 10 are equidistantly arranged at the bottom of the air box 7, and the air outlets 10 are connected to the interior of the air chambers 9.

[0017] The stiffening rib 1, reinforcing rib 2, and fixed support connecting plate 3 are integrally cast structures, eliminating internal stress and connection gaps that may be caused by welding or bolting, making the machine bed a robust whole. This effectively suppresses vibration during processing, providing a stable and reliable operating platform for the laser head and further improving the precision of laser cutting. Several adjustable feet are equidistantly arranged at the bottom of the stiffening rib 1 to achieve overall leveling and calibration of the machine bed. A graphene heat-conducting sheet is installed at the connection between the Z-shaped protective cover 4 and the stiffening rib 1. Utilizing the extremely high thermal conductivity of graphene, an efficient heat conduction path is established between the Z-shaped protective cover 5 and the stiffening rib 1 to effectively heat the interior of the machine bed. The heat accumulated (especially near key components such as guide rails) is quickly transferred to the outer Z-shaped protective cover 5 and heat dissipation fins 6, greatly enhancing the passive heat dissipation capability; the surface of the heat dissipation fins 6 is provided with a large number of micron-level turbulence units formed by laser engraving. The turbulence units are distributed in a scale-like manner to destroy the laminar boundary layer of the cooling air and intensify the air turbulence, so that the contact and heat exchange between the cooling air and the heat dissipation fins 6 are more sufficient, thereby achieving a doubling of heat dissipation efficiency under the same space and air volume; the air cooler 8 is set on the surface of the lateral side of the stiffener 1 by a fixed mounting plate. It integrates a semiconductor cooling chip and a centrifugal fan to continuously pump the cooled air into the air cavity 9.

[0018] Working principle: When the heat generated during the laser cutting process is transferred to the bed, the accumulated heat will be quickly conducted to the heat dissipation fins and Z-shaped protective cover on the outside. The heat conducted to the heat dissipation fins and Z-shaped protective cover will be dissipated to the outside through a passive heat dissipation mechanism to avoid heat accumulation inside the bed (especially in the guide rail area). When the air coolers (which integrate semiconductor cooling chips and centrifugal fans) at both ends of the stiffener are started, the semiconductor cooling chips will quickly reduce the air temperature, while the centrifugal fan will continuously pump the cooled air into the air chamber inside the air box. The cooled air in the air chamber is evenly blown onto the surface of the heat dissipation fins below through the air outlets that are evenly distributed at the bottom of the air box. The cooled air undergoes forced heat exchange with the high temperature of the fin surface, and after taking away a large amount of heat, it is naturally discharged, forming an active cooling cycle. This can reduce the temperature of the heat dissipation fins and the overall bed body in a short time, thereby improving the heat dissipation effect of the bed body. Among them, the micron-scale scale-like turbulence units formed by laser engraving on the surface of the heat dissipation fins can destroy the "laminar boundary layer" formed by cooling air on the fin surface (laminar flow will hinder heat exchange). The turbulence units can intensify air turbulence, allowing the cooling air to have more sufficient contact with the heat dissipation fins, greatly improving the heat exchange efficiency under natural conditions, accelerating the speed at which heat diffuses into the air, and further improving the heat dissipation effect of the bed.

[0019] 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.

[0020] 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 bed structure for a laser cutting machine, comprising two parallel stiffening plates (1), a plurality of reinforcing ribs (2) equidistantly arranged between the inner sides of the two stiffening plates (1), a fixed support connecting plate (3) between the two ends of the inner sides of the two stiffening plates (1), and interconnected dust extraction ducts arranged inside the two stiffening plates (1) and the reinforcing ribs (2), characterized in that: Both of the ribs (1) are provided with Z-shaped protective covers (4) on their outer surfaces. Several fixing bolts (5) are provided at equal intervals along the horizontal direction at one end of the top of the Z-shaped protective cover (4). One end of the fixing bolts (5) passes through the Z-shaped protective cover (4) and is threaded to the rib (1). Several heat dissipation fins (6) are provided at equal intervals along the horizontal direction on one side of the outer surface of the rib (1) corresponding to the position of the Z-shaped protective cover (4). A wind box (7) is provided on the inner surface of the Z-shaped protective cover (4) directly above the heat dissipation fins (6). A cooler (8) is provided on both sides of the outer surface of the rib (1). Two air chambers (9) are provided inside the air box (7). The air chambers (9) are connected to the output end of the cooler (8) at one end of the rib (1). Several air outlets (10) are provided at equal intervals at the bottom of the air box (7). The air outlets (10) are connected to the inside of the air chambers (9).

2. The bed structure of a laser cutting machine according to claim 1, characterized in that: The stiffening plate (1), the reinforcing rib (2), and the fixed support connecting plate (3) are integrally cast structures.

3. The bed structure of a laser cutting machine according to claim 1, characterized in that: The bottom of the stiffening plate (1) is provided with several foot adjustment supports at equal intervals.

4. The bed structure of a laser cutting machine according to claim 1, characterized in that: A heat-conducting sheet made of graphene is provided at the connection between the Z-shaped protective cover (4) and the stiffener (1).

5. The bed structure of a laser cutting machine according to claim 1, characterized in that: The surface of the heat dissipation fins (6) is provided with a large number of micron-level turbulence units formed by laser engraving. The turbulence units are distributed in a scale-like manner to disrupt the laminar boundary layer of the cooling air and enhance the heat exchange efficiency between the airflow and the heat dissipation fins (6).

6. The bed structure of a laser cutting machine according to claim 1, characterized in that: The air cooler (8) is mounted on the lateral side surface of the stiffener (1) by a fixed mounting plate. It integrates a semiconductor cooling chip and a centrifugal fan to continuously pump the cooled air into the air cavity (9).

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