Laser cutting machine outer protection structure

Abstract

The utility model belongs to laser cutting machine technical field, concretely relates to a laser cutting machine outer protection structure, including the frame of constituting the protection shell and the front door installed on the frame, the upper crossbeam is steel sheet welded structure, the front door still includes left side front door side plate and right side front door side plate, the upper end of left side front door side plate and right side front door side plate all are fixedly connected with the upper crossbeam through bolt, the lower part of left side movable door and right side movable door all are connected with lower guide connecting piece, at least one vertical support bearing is installed on the lower guide connecting piece, the support bearing is rolled with the guide rail on the frame or ground and is set up. The utility model discloses through adopting the upper crossbeam of high -strength steel sheet welded structure, the bending stiffness of crossbeam main body and overall carrying capacity have been enhanced significantly, fundamentally reduce the crossbeam deflection deformation of the front door dead weight and frequent opening and closing.

Description

Technical Field

[0001] This utility model belongs to the field of laser cutting machine technology, specifically relating to an external protective structure for a laser cutting machine. Background Technology

[0002] Laser cutting machines, as a highly efficient and precise modern processing equipment, are widely used for cutting and shaping both metallic and non-metallic materials. They utilize a high-energy-density laser beam to irradiate the workpiece surface, causing the material to rapidly melt, vaporize, or reach its ignition point. The molten material is then removed with the help of auxiliary gas, resulting in a high-quality cut. Compared to traditional mechanical cutting methods, laser cutting offers advantages such as a smooth kerf, a small heat-affected zone, high processing precision, and strong adaptability, significantly improving production efficiency and product quality.

[0003] To ensure operator safety, isolate laser radiation and cutting fumes, reduce equipment operating noise, and maintain a stable processing environment, laser cutting machines are typically equipped with an integrated external protective structure. This structure is not only an important safety barrier but also protects internal optical components and maintains the cleanliness of the optical path, which is crucial for the long-term stable operation of the equipment. Among these components, the front door, as a frequently opened and closed moving part of the external protective structure, directly affects the ease of maintenance and overall work efficiency of the equipment due to its smooth and reliable operation.

[0004] For large-format laser cutting machines (especially models with a processing area exceeding 6 meters × 2.5 meters), their external protective structure is relatively large. The front door is typically designed with a wide span and relies on a top crossbeam as the main support and guide foundation. However, due to the large overall weight of the front door and the long span of the crossbeam, under long-term conditions of bearing the weight of the door and frequent opening and closing movements, the crossbeam is prone to downward deflection in the middle. This deformation can lead to misalignment between the front door and the guide rail, resulting in problems such as poor opening and closing, jamming, etc., affecting the normal use and maintenance efficiency of the equipment, and may also accelerate structural fatigue and shorten the service life of the protective system. Utility Model Content

[0005] The purpose of this invention is to provide an external protective structure for a laser cutting machine to solve the problems existing in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an external protective structure for a laser cutting machine, comprising a frame constituting a protective shell and a front door mounted on the frame; the front door includes an upper crossbeam, a guide shaft, and a left movable door and a right movable door slidably disposed along the guide shaft; The upper crossbeam is a welded steel plate structure, which includes a crossbeam body and reinforcing ribs welded below the crossbeam body; The front door also includes a left front door side panel and a right front door side panel, the upper ends of which are fixedly connected to the upper crossbeam by bolts. The lower parts of both the left and right movable doors are connected to lower guide connectors, and at least one vertically arranged support bearing is installed on the lower guide connector. The support bearing is in rolling cooperation with the guide rail set on the frame or the ground.

[0007] Preferably, the main body of the crossbeam is formed by bending a steel plate with a thickness of not less than five millimeters.

[0008] Preferably, connecting plates are welded to both ends of the upper crossbeam, and the connecting plates are fixedly connected to the frame by bolts.

[0009] Preferably, a U-shaped connecting plate is welded onto the upper crossbeam, and the left front door side panel and the right front door side panel are respectively fixedly connected to the corresponding U-shaped connecting plate by bolts.

[0010] Preferably, the lower ends of the left front door side panel and the right front door side panel are both fixedly connected to a pedal, and the left front door side panel and the right front door side panel are respectively fixedly connected to the longitudinal beam of the frame through columns.

[0011] Preferably, the left front door side panel and the right front door side panel are respectively welded with triangular reinforcing ribs between them and the corresponding pillars.

[0012] Preferably, a horizontally arranged guide bearing is also installed on the lower guide connector, and the guide bearing rolls with the side of the guide rail.

[0013] Preferably, the support bearing and / or the guide bearing are deep groove ball bearings.

[0014] Preferably, the top of both the left and right movable doors are slidably connected to the guide shaft via linear bearings.

[0015] Preferably, the reinforcing rib is a steel plate that runs along the entire length of the main body of the beam.

[0016] The beneficial effects of this utility model are as follows: By adopting a high-strength steel plate welded structure for the upper crossbeam, this utility model significantly enhances the bending stiffness and overall load-bearing capacity of the crossbeam body, fundamentally reducing the downward deflection deformation of the crossbeam caused by the weight of the front door and frequent opening and closing. Simultaneously, the bolted connection between the front door side panel and the upper crossbeam allows the side panel to provide effective auxiliary support for the upper crossbeam, further improving the overall stability of the upper structure of the front door. Furthermore, the guide structure with a rolling cooperation between the support bearing and the guide rail at the bottom of the front door not only shares part of the door's weight and reduces the load on the upper crossbeam, but also ensures smooth and stable operation of the front door, effectively avoiding jamming problems caused by deformation. This integrated and improved structure significantly improves the long-term reliability and maintenance convenience of the outer protective front door of the large-format laser cutting machine, extending the service life of key structural components. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall three-dimensional structure provided for this utility model; Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure from another perspective; Figure 3 This is a three-dimensional structural diagram of the front door portion of this utility model; Figure 4 This is a three-dimensional structural diagram of the upper crossbeam of the front door of this utility model; Figure 5 for Figure 4 A sectional view; Figure 6 This is a schematic diagram of the connection structure between the front door side panel and the pillar of this utility model; Figure 7 This is a partial schematic diagram of the connection structure between the upper crossbeam and the front door side panel of this utility model; Figure 8 for Figure 7 A sectional view along direction A. Figure 9 This is a side view of the lower guide structure. Figure 10 for Figure 9 A three-dimensional image. Detailed Implementation

[0018] In the description of this disclosure, it should be understood that the terms “center,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure.

[0019] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0021] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings and preferred embodiments.

[0022] This utility model provides an external protective structure for a laser cutting machine, which mainly optimizes the front door structure of a large-format laser cutting machine to solve the problem that the upper crossbeam is prone to downward deformation, causing the door to operate poorly.

[0023] like Figures 1 to 2 As shown, the overall external protection system includes a frame 4 that forms the main support structure. This frame 4 is typically connected to the equipment bed by bolts via columns and longitudinal beams. Components such as left and right cover plates, a roof cover plate 3, and a rear safety door 5 are installed on the frame 4 to form a complete protective space. The core improvements are concentrated on the front door section.

[0024] like Figure 3 As shown, the front door mainly includes an upper crossbeam 15, a left front door side panel 13, a right front door side panel 14, a left movable door 11, a right movable door 12, and a lower guide structure. The upper guide shaft 16 of the front door is fixedly installed below the upper crossbeam 15 via three supports on the left, middle, and right sides. The upper ends of the left movable door 11 and the right movable door 12 are respectively mounted on the guide shaft 16 via linear bearings, enabling smooth left and right sliding along the guide shaft 16. A brush is installed on the inner bottom of the movable door for sealing and preventing light leakage.

[0025] like Figure 4 and Figure 5As shown, one of the key improvements of this utility model lies in the structure of the upper crossbeam 15. The upper crossbeam 15 is welded from high-strength steel plates, and its main body 1501 is formed by bending a steel plate with a thickness of not less than five millimeters. To significantly enhance its bending stiffness, a continuous reinforcing rib 1502 extending along its entire length is welded below the main body 1501. At both ends of the crossbeam 15, connecting plates 1504 with a thickness of not less than eight millimeters are welded to securely connect the entire upper crossbeam 15 to the outer protective frame 4 using bolts. Furthermore, multiple U-shaped connecting plates 1503 are welded to the crossbeam 15 at positions corresponding to the installation locations of the front door side panels.

[0026] like Figures 6-8 As shown, the left front door side panel 13 and the right front door side panel 14 form a stable support with the frame 4 through a connecting structure. Specifically, each front door side panel is fixed to a column 17 as a whole by welded triangular reinforcing ribs. The lower end of this assembly is connected to a pedal 19 by bolts, while the upper and lower ends of the column 17 are fixed to the upper and lower longitudinal beams of the outer protective frame 4 by bolts, thus forming a stable corner-type support structure. Subsequently, the upper ends of the left and right front door side panels 13 and 14 are respectively fastened to the corresponding U-shaped connecting plates 1503 on the upper crossbeam 15 by multiple bolts. This bolted connection method makes the front door side panels and the upper crossbeam 15 rigidly connected. When the upper crossbeam 15 attempts to deflect downwards due to force, the sturdy side panels on both sides can provide effective upward support and traction, significantly improving the weakness of the side panels merely "suspended" from the crossbeam in the traditional structure.

[0027] like Figures 9-10 As shown, another key improvement of this utility model lies in the lower guide and support structure of the front door. Two lower guide connectors 18 are installed at the bottom of the left movable door 11 and the right movable door 12. One end of each connector 18 is bolted to a reinforcing rib inside the door body, and the other end is fitted with a bearing. Specifically, each connector 18 is equipped with two deep groove ball bearings: one is a horizontally positioned guide bearing 1801, which rolls against the side of a guide rail 1901 fixed to the pedal 19 or the ground to limit the door's forward and backward swaying during movement; the other is a vertically positioned support bearing 1802, whose roller surface rolls against the lower surface of the guide rail 1901. This vertical support bearing 1802 directly bears a portion of the weight of the movable door, effectively reducing the load on the top upper beam 15 and thus helping to prevent downward deformation of the upper beam 15 from below.

[0028] In summary, this utility model solves the problem of downward deflection of the front door system of a wide-format laser cutting machine by synergistically employing three structural improvements: "high-strength welded upper crossbeam 15", "rigid connection with side plate bolts", and "vertical support wheel set under the door". This ensures the stability and reliability of the front door during long-term operation.

[0029] It should be noted that the above description is only a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any equivalent changes or modifications made by those skilled in the art to the structure, dimensions, connection methods, etc., within the scope of the claims, should be covered within the scope of protection of this utility model.

Claims

1. An external protective structure for a laser cutting machine, comprising a frame (4) constituting a protective shell and a front door mounted on the frame (4); the front door includes an upper crossbeam (15), a guide shaft (16), and a left movable door (11) and a right movable door (12) slidably disposed along the guide shaft (16); characterized in that: The upper crossbeam (15) is a welded steel plate structure, which includes a crossbeam body (1501) and a reinforcing rib (1502) welded below the crossbeam body (1501). The front door also includes a left front door side panel (13) and a right front door side panel (14), the upper ends of the left front door side panel (13) and the right front door side panel (14) are fixedly connected to the upper crossbeam (15) by bolts; The lower parts of the left movable door (11) and the right movable door (12) are both connected to a lower guide connector (18). At least one vertically arranged support bearing (1802) is installed on the lower guide connector (18). The support bearing (1802) is in rolling cooperation with the guide rail (1901) set on the frame (4) or the ground.

2. The external protective structure for a laser cutting machine according to claim 1, characterized in that: The main body of the crossbeam (1501) is formed by bending a steel plate with a thickness of not less than 5mm.

3. The external protective structure for a laser cutting machine according to claim 1, characterized in that: The upper crossbeam (15) has connecting plates (1504) welded to both ends, and the connecting plates (1504) are fixedly connected to the frame (4) by bolts.

4. The external protective structure for a laser cutting machine according to claim 1, characterized in that: A U-shaped connecting plate (1503) is welded onto the upper crossbeam (15), and the left front door side panel (13) and the right front door side panel (14) are respectively fixedly connected to the corresponding U-shaped connecting plate (1503) by bolts.

5. The external protective structure for a laser cutting machine according to claim 1, characterized in that: The lower ends of the left front door side panel (13) and the right front door side panel (14) are fixedly connected to a pedal (19), and the left front door side panel (13) and the right front door side panel (14) are fixedly connected to the longitudinal beam of the frame (4) through the column (17).

6. The external protective structure for a laser cutting machine according to claim 5, characterized in that: The left front door side panel (13) and the right front door side panel (14) are respectively welded with triangular reinforcing ribs between them and the corresponding pillars (17).

7. The external protective structure for a laser cutting machine according to claim 1, characterized in that: The lower guide connector (18) is also equipped with a horizontally arranged guide bearing (1801), which rolls with the side of the guide rail (1901).

8. The external protective structure for a laser cutting machine according to claim 7, characterized in that: The support bearing (1802) and / or the guide bearing (1801) are deep groove ball bearings.

9. The external protective structure for a laser cutting machine according to claim 1, characterized in that: The upper parts of the left movable door (11) and the right movable door (12) are slidably connected to the guide shaft (16) via linear bearings.

10. The external protective structure for a laser cutting machine according to claim 1, characterized in that: The reinforcing rib (1502) is a steel plate that runs along the length of the main body of the crossbeam (1501).

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