Laser cutting device with alarm function

Abstract

The utility model provides a laser cutting device with an alarm function, which comprises a laser cutting base, a detection type cutting workbench is fixedly arranged above the laser cutting base, a plurality of groups of support strip components are arranged on the detection type cutting workbench, and the plurality of groups of support strip components are transversely distributed; the laser cutting base is connected with the lower ends of the supporting stand columns through the linear actuator, the upper ends of the two supporting stand columns are connected with the two ends of the movable cross beam respectively, the movable cross beam is provided with the laser head vertical frame through the linear actuator, and the laser head vertical frame is provided with the laser cutting head through the linear actuator. According to the utility model, the real-time monitoring of the wear of the support strip is realized, and the traditional way of depending on manual or indirect alarm is abandoned. And equipment damage and shutdown caused by faults are prevented. In addition, the device further has the function of assisting in detecting welding slag, whether replacement is needed or not is accurately judged by comparing the weight change of the supporting strip assembly, and important data support is provided for equipment maintenance.

Description

Technical Field

[0001] This utility model belongs to the field of laser cutting technology, and in particular relates to a laser cutting device with an alarm function. Background Technology

[0002] Laser cutting equipment, as a prime example of cutting-edge technology, leverages the high energy density of its laser beam to precisely focus on the workpiece surface, rapidly heating the material to its melting or boiling point. Simultaneously, high-pressure gas coaxial with the laser beam effectively blows away the molten or vaporized material, ensuring precise completion of the cutting task. However, to ensure the safety and stability of this high-precision equipment during operation, laser cutting equipment is equipped with multiple alarm functions, such as collision alarms, nozzle loss alarms, machine tool emergency stop alarms, and system fault alarms. These functions together constitute the equipment's safety protection network.

[0003] Nevertheless, traditional laser cutting equipment still has some shortcomings in its alarm system, particularly the lack of an alarm function for support bar failure. Support bars, as a key component of the cutting table, are crucial for auxiliary positioning during laser cutting. Their primary function is to provide a flat support surface for the workpiece, ensuring that it can be accurately cut to the required size.

[0004] During laser cutting, numerous support strips come into contact with the workpiece surface, resulting in varying degrees of wear. Once a support strip in a certain area becomes severely worn, it becomes difficult to continue providing stable planar support for the workpiece. This is particularly evident in the cutting of thin sheet metal workpieces. Due to their thinness, thin sheet metal workpieces require extremely high flatness of the support surface. If the support surface becomes uneven, the thin sheet metal workpiece is prone to deformation, and the area above the uneven support surface will experience a decrease in height. Especially when the support strip in the lower center of the thin sheet metal workpiece is severely worn, the deformation in the middle area will be particularly significant, severely affecting the cutting quality and workpiece performance.

[0005] Therefore, it is essential to invent a laser cutting device with an alarm function. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model provides a laser cutting device with an alarm function, comprising a laser cutting base, a detection-type cutting worktable, support bar assemblies, a linear actuator, support columns, a movable crossbeam, a laser head stand, a laser cutting head, a protective fence, and a smoke extraction system. The detection-type cutting worktable is fixedly installed above the laser cutting base, and multiple sets of the support bar assemblies are installed on the detection-type cutting worktable, arranged horizontally. The laser cutting base is connected to the lower end of the support columns via the linear actuator, and the upper ends of the two support columns are respectively connected to the two ends of the movable crossbeam. The movable crossbeam is equipped with a laser head stand via the linear actuator, and the laser head stand is equipped with a laser cutting head via the linear actuator.

[0007] The outer surface of the laser cutting base is fixedly equipped with a protective fence, and a smoke exhaust system is installed inside. The smoke exhaust system is located below the detection-type cutting workbench and the support bar assembly. The detection-type cutting workbench is connected to the central control console and alarm system of the laser cutting device.

[0008] Preferably, the detection-type cutting worktable includes a supporting main beam, a reinforcing secondary beam, a positioning beam, a positioning groove, and pressure sensors. The supporting main beam is fixedly installed on the laser cutting base. There are two supporting main beams, and at least two reinforcing secondary beams are fixedly installed between the two parallel supporting main beams. A positioning beam is fixedly installed on the inner side of each supporting main beam. A number of positioning grooves are arranged laterally on the positioning beam. Two pressure sensors are arranged in mirror symmetrically in each positioning groove. The pressure sensors are in contact with the positioning block of the support bar assembly, and the positioning block is located above the pressure sensors.

[0009] Preferably, the positioning block of the support bar assembly is slidably positioned and assembled in the positioning groove opened in the positioning beam, and the pressure sensor set inside the positioning groove is used to detect the overall weight and pressure changes of the support bar assembly.

[0010] Preferably, the positioning block provided inside the positioning groove is restricted by the pressure plate above. The pressure plate is used to firmly restrict the positioning block inside the positioning groove, and the pressure plate is fixedly installed on the positioning beam by bolts.

[0011] Preferably, the pressure sensor inside the positioning groove is connected to the central control console and alarm system of the laser cutting device.

[0012] Preferably, the support bar assembly includes positioning blocks, slots, and support bars. There are two positioning blocks, and each positioning block has a plurality of slots distributed laterally. The two ends of each support bar are respectively engaged in the slots provided in the two positioning blocks.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This invention achieves real-time monitoring of support bar wear by installing multiple support bar assemblies on a detection-type cutting table and embedding pressure sensors in the positioning grooves of each support bar assembly. This completely eliminates the traditional method of relying on manual visual inspection or waiting for other processes to trigger indirect alarms due to severe support bar wear, which in turn causes alarms in other processes. This innovative design not only significantly improves cutting accuracy and workpiece quality, especially in the cutting of thin plates, effectively avoiding workpiece deformation caused by uneven support surfaces, but also greatly enhances the safety and stability of the equipment. Real-time monitoring and early warning of support bar failures effectively prevent equipment damage and downtime. Furthermore, this design simplifies and facilitates the replacement and maintenance of support bar assemblies, saving maintenance time, reducing maintenance costs, and further improving the overall performance and service life of the equipment.

[0015] Furthermore, this invention cleverly utilizes pressure sensor technology to implement the alarm function, thus also possessing the function of assisting in the detection of welding slag. Its working principle lies in accurately calculating the weight increase of the support bar assembly since its replacement by comparing the initial weight value with the current actual weight value. This data is crucial for assisting personnel in determining whether a new support bar assembly needs to be replaced due to welding slag accumulation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the partial assembly structure of the detection-type cutting workbench and support strip assembly of this utility model.

[0018] Figure 3 This is a utility model Figure 2 A schematic diagram of the structure of the support bar assembly before it is assembled.

[0019] Figure 4 This is an exploded structural diagram of a single support bar assembly of this utility model.

[0020] In the picture:

[0021] 1. Laser cutting base; 2. Detection-type cutting worktable; 3. Supporting main beam; 4. Reinforcing secondary beam; 5. Positioning beam; 6. Positioning groove; 7. Pressure sensor; 8. Pressure plate; 9. Bolt; 10. Support bar assembly; 11. Positioning block; 22. Slot; 33. Support bar; 4. Linear actuator; 5. Support column; 6. Moving crossbeam; 7. Laser head stand; 8. Laser cutting head; 9. Protective fence; 10. Smoke exhaust system. Detailed Implementation

[0022] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. 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.

[0023] In the description of the embodiments, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for 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 the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present utility model based on the specific circumstances.

[0024] As attached Figure 1 To be continued Figure 4 As shown:

[0025] This utility model provides a laser cutting device with an alarm function, including a laser cutting base 1, a detection-type cutting worktable 2, support bar assemblies 3, a linear actuator 4, support columns 5, a moving crossbeam 6, a laser head stand 7, a laser cutting head 8, a protective fence 9, and a smoke exhaust system 10. The detection-type cutting worktable 2 is fixedly installed on the laser cutting base 1, and multiple sets of the support bar assemblies 3 are installed on the detection-type cutting worktable 2, which are arranged horizontally. The laser cutting base 1 is connected to the lower end of the support column 5 through the linear actuator 4, and the upper ends of the two support columns 5 are respectively connected to the two ends of the moving crossbeam 6. The moving crossbeam 6 is equipped with the laser head stand 7 through the linear actuator 4, and the laser head stand 7 is equipped with the laser cutting head 8 through the linear actuator 4.

[0026] Furthermore, a protective fence 9 is fixedly installed on the outer surface of the laser cutting base 1, providing a safe working environment for operators and preventing injury from splatter generated during laser cutting. An exhaust system 10 is installed internally, located below the detection-type cutting worktable 2 and the support strip assembly 3, effectively removing smoke and harmful gases generated during cutting, maintaining the cleanliness and air quality of the work area. The detection-type cutting worktable 2 is connected to the central control console and alarm system of the laser cutting device, enabling real-time monitoring and alarm functions for the worktable's status.

[0027] Furthermore, the detection-type cutting worktable 2 includes a supporting main beam 21, reinforcing secondary beams 22, positioning beams 23, positioning grooves 24, and a pressure sensor 25. The supporting main beams 21 are fixedly installed on the laser cutting base 1. There are two supporting main beams 21, and at least two reinforcing secondary beams 22 are fixedly installed between the two parallel supporting main beams 21, which enhances the stability and load-bearing capacity of the worktable. A positioning beam 23 is fixedly installed on the inner side of each supporting main beam 21. Numerous positioning grooves 24 are arranged laterally on the positioning beams 23 for positioning and installing the support strip assembly 3.

[0028] Furthermore, each positioning slot 24 is equipped with two mirror-symmetrically arranged pressure sensors 25. These pressure sensors 25 are in contact with the positioning block 31 of the support bar assembly 3, and are used to monitor the overall weight and pressure changes of the support bar assembly 3 in real time. The positioning block 31 is located above the pressure sensors 25 and is slidably positioned in the positioning slot 24, enabling flexible installation and removal of the support bar assembly 3.

[0029] Furthermore, the positioning block 31 provided inside the positioning groove 24 is restricted by the pressure plate 26 above. The pressure plate 26 is fixedly installed on the positioning beam 23 by bolts 27, which firmly restricts the positioning block 31 inside the positioning groove 24 to prevent it from moving or falling off during operation.

[0030] Furthermore, the pressure sensor 25 inside the positioning groove 24 is connected to the central control console and alarm system of the laser cutting device. When an abnormal pressure is detected in the support bar assembly 3, the alarm system can be triggered immediately to remind the operator to handle the situation.

[0031] Furthermore, the support bar assembly 3 includes positioning blocks 31, slots 32, and support bars 33. Two positioning blocks 31 are provided, each with several slots 32 arranged laterally for installing the support bars 33. Both ends of each support bar 33 are respectively engaged within the slots 32 of the two positioning blocks 31, achieving stable installation and removal of the support bars 33.

[0032] Preparation: The operators carefully place the thick plate to be processed on the inspection-type cutting worktable 2, ensuring its stability. Then, they meticulously set various parameters for laser cutting through the central control panel, including laser power, cutting speed, and focal point position, to precisely match the cutting requirements of the thick plate.

[0033] Cutting process: Under the precise drive of the linear actuator 4, the laser cutting head 8 moves smoothly along the preset cutting path. A high-power-density laser beam is emitted from the laser cutting head 8, precisely irradiating the surface of the thick plate, instantly melting, vaporizing, or bringing the material to a semi-volatile state, thus successfully completing the cut. During this process, the fume extraction system 10 operates continuously and efficiently, effectively removing the generated smoke and harmful gases, ensuring a clean and safe working environment.

[0034] Real-time monitoring and adjustment for thick plate processing: Pressure sensor 25 closely monitors the overall weight and pressure changes of the support bar assembly 3 to ensure the flatness and stability of the support surface. During thick plate processing, if any support bar assembly 3 experiences wear or abnormal pressure, even though the flatness requirements for the support surface are relatively low for thick plate workpieces, pressure sensor 25 can still sensitively detect pressure differences between the support bar assemblies 3. In particular, when a support bar assembly 3 loses some of its support capacity due to wear, the pressure it bears will be less than that of other normal support bar assemblies 3. This lack of pressure change or inconsistency with other component data will trigger an alarm system, reminding the operator to take timely action.

[0035] Real-time monitoring and adjustment of thin plates: For thin plate cutting, the monitoring role of pressure sensor 25 is even more critical. It continuously captures minute pressure changes in support bar assembly 3, ensuring that any slight fluctuations in the support surface can be detected in a timely manner. When a support bar assembly 3 gradually loses its supporting capacity due to wear, the thin plate workpiece will exert greater pressure on it (because thin plates are more prone to deformation). This pressure change will be accurately captured by pressure sensor 25 and will immediately trigger the alarm system, reminding the operator to make rapid adjustments or replacements to ensure cutting quality.

[0036] Functions to assist in the detection of welding slag:

[0037] Operators can activate the slag detection function periodically or at any time as needed. The central control console receives and analyzes the data transmitted by the pressure sensor 25, judging the degree of wear by comparing the weight change of the support bar assembly 3. If the weight increase exceeds the preset threshold range, the alarm system will be automatically triggered, reminding the operator to replace the severely worn support bar assembly in time. According to the alarm prompt, the operator can quickly locate and replace the damaged support bar assembly 3, thereby ensuring the flatness and stability of the cutting table 2 and providing strong support for subsequent cutting operations. It is worth noting that in order to ensure the accuracy of slag detection, the above function should be performed without processing the workpiece, because the weight of the workpiece itself may interfere with the detection effect of slag accumulation, thus affecting the accuracy of the judgment. Through this design, this utility model not only improves the level of intelligent equipment maintenance, but also ensures the efficiency and safety of cutting operations.

[0038] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. A laser cutting device with an alarm function, characterized in that, The system includes a laser cutting base (1), a detection-type cutting worktable (2), a support bar assembly (3), a linear actuator (4), a support column (5), a moving crossbeam (6), a laser head stand (7), a laser cutting head (8), a protective fence (9), and a smoke exhaust system (10). The detection-type cutting worktable (2) is fixedly installed on the top of the laser cutting base (1). Multiple sets of the support bar assemblies (3) are installed on the detection-type cutting worktable (2), and the multiple sets of the support bar assemblies (3) are arranged horizontally. The laser cutting base (1) is connected to the lower end of the support column (5) through the linear actuator (4). The upper ends of the two support columns (5) are respectively connected to the two ends of the moving crossbeam (6). The moving crossbeam (6) is equipped with the laser head stand (7) through the linear actuator (4), and the laser head stand (7) is equipped with the laser cutting head (8) through the linear actuator (4). The laser cutting base (1) is fixedly equipped with a protective fence (9) on its outer surface, and a smoke exhaust system (10) is set inside it. The smoke exhaust system (10) is located below the detection-type cutting workbench (2) and the support bar assembly (3). The detection-type cutting workbench (2) is connected to the central control console and alarm system of the laser cutting device.

2. The laser cutting device with alarm function as described in claim 1, characterized in that: The detection-type cutting workbench (2) includes a supporting main beam (21), a reinforcing secondary beam (22), a positioning beam (23), a positioning groove (24), and a pressure sensor (25). The supporting main beam (21) is fixedly installed on the laser cutting base (1). There are two supporting main beams (21), and at least two reinforcing secondary beams (22) are fixedly installed between the two parallel supporting main beams (21). A positioning beam (23) is fixedly installed on the inner side of each supporting main beam (21). A number of positioning grooves (24) are arranged horizontally on the positioning beam (23). Two pressure sensors (25) are arranged in mirror symmetry in each positioning groove (24). The pressure sensor (25) is in contact with the positioning block (31) of the support bar assembly (3). The positioning block (31) is located above the pressure sensor (25).

3. The laser cutting device with alarm function as described in claim 2, characterized in that: The positioning block (31) of the support bar assembly (3) is slidably positioned and assembled in the positioning groove (24) opened in the positioning beam (23). The pressure sensor (25) set inside the positioning groove (24) is used to detect the overall gravity and pressure changes of the support bar assembly (3).

4. The laser cutting device with alarm function as described in claim 3, characterized in that: The positioning block (31) provided inside the positioning groove (24) is restricted by the pressure plate (26) above. The pressure plate (26) is used to firmly restrict the positioning block (31) inside the positioning groove (24). The pressure plate (26) is fixedly installed on the positioning beam (23) by bolts (27).

5. A laser cutting device with alarm function as described in claim 4, characterized in that: The pressure sensor (25) inside the positioning groove (24) is connected to the central control console and alarm system of the laser cutting device.

6. A laser cutting device with alarm function as described in claim 4, characterized in that: The support bar assembly (3) includes a positioning block (31), a slot (32) and a support bar (33). There are two positioning blocks (31), and several slots (32) are arranged horizontally on each positioning block (31). The two ends of each support bar (33) are respectively locked in the slots (32) of the two positioning blocks (31).

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