Special-shaped steel plate cutting device

Abstract

A special-shaped steel plate cutting device comprises a machine tool, a moving frame capable of sliding in the Y-axis direction of the machine tool is arranged on the machine tool, a cutting mechanism capable of sliding in the X-axis direction of the moving frame is arranged on the moving frame, and the cutting mechanism comprises a lifting shaft and cutting equipment arranged at the front end of the lifting shaft. The cutting equipment is driven by the lifting shaft to slide in the Z-axis direction, a plurality of positioning mechanisms evenly distributed in the machine tool at intervals are arranged on the machine tool, and when the plates are placed on the positioning mechanisms, the adjacent positioning mechanisms are unfolded and tightly attached to the surfaces of the plates. The positioning mechanism is tightly attached to the plate and then fixes the plate in an adsorption mode. The multi-point dynamic self-adaptive fixing device has the beneficial effects that the multi-point dynamic self-adaptive fixing of the special-shaped plate is realized through the combination of the expandable positioning mechanism and the adsorption fixing.

Description

Technical Field

[0001] The utility model relates to a laser cutting device, in particular to a cutting device for special-shaped steel plates. Background Art

[0002] In the prior art, cutting devices for special-shaped steel plates are widely used in fields such as furniture manufacturing, architectural decoration, and the automotive industry. Its main function is to recycle the surplus materials generated during the production process. By drawing and typesetting, usable parts are cut out, thereby improving the material utilization rate and reducing production costs. When in use, workers usually directly place the surplus materials on the working table of the cutting machine tool, then complete the layout design manually or with the help of a laser device, and then the cutting device processes according to the set path.

[0003] However, the prior art has obvious defects. Since the cutting device for special-shaped steel plates lacks an effective fixing mechanism, the surplus materials are only simply placed on the machine tool, resulting in easy deviation during the process of workers walking, drawing, or aligning the laser cutting path. This deviation will directly affect the cutting accuracy, making the dimensions of the finally processed parts inconsistent with the design requirements, not only wasting materials, but also reducing production efficiency and increasing the possibility of rework. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a cutting device for special-shaped steel plates with more stable positioning of the plates.

[0005] To achieve the above object, the technical solution of the utility model is as follows: A cutting device for special-shaped steel plates, including a machine tool, a moving frame that can slide along the Y-axis direction of the machine tool is arranged on the machine tool, a cutting mechanism that can slide along the X-axis direction of the moving frame is arranged on the moving frame, the cutting mechanism includes a lifting shaft and a cutting device arranged at the front end of the lifting shaft, the cutting device can slide along the Z-axis direction driven by the lifting shaft, a plurality of positioning mechanisms are arranged on the machine tool with uniformly distributed gaps inside the machine tool, when a plate is placed on the positioning mechanism, adjacent positioning mechanisms unfold and closely adhere to the surface of the plate, and the plate is fixed by adsorption after the positioning mechanism adheres to the plate.

[0006] The beneficial effect of the utility model is that multi-point dynamic adaptive fixation of special-shaped plates is achieved by combining an expandable positioning mechanism with adsorption fixation. When the plate is placed, the positioning mechanism automatically adjusts the expansion angle according to the contour of the plate, so that the expanded support surface forms surface contact with the surface of the plate rather than point contact, so as to increase the contact area and effectively prevent displacement caused by local uneven force during the cutting process. The adsorption device is linked with the expansion mechanism, and the adsorption function is automatically started after the expansion is completed, forming a dual fixing mechanism of mechanical clamping and negative pressure adsorption. As a preferred method, the positioning mechanism can be designed as a four-way telescopic support plate structure, and a flexible vacuum suction cup is set at the end of each support plate. When the support plate is expanded to contact with the plate, the vacuum pipeline is automatically turned on to generate negative pressure adsorption, which not only ensures the adaptability of the contact surface but also achieves rapid fixation.

[0007] Furthermore, the positioning mechanism includes a positioning column, a rack located at the center of the positioning column, a driving member for driving the rack to move up and down, and an expansion plate engaged with the upper end of the rack. When the driving member moves downward, the rack drives the expansion plate to rotate from being close to the surface of the positioning column to a state parallel to the plate.

[0008] This solution realizes automatic unfolding control of the unfolding plate through rack transmission, converting linear motion into rotational motion, and the mechanical structure is simple and reliable. As a preferred method, the meshing point between the unfolding plate and the rack adopts a variable diameter gear design. When the rack moves down, the gear transmission ratio gradually increases, so that the unfolding plate unfolds quickly in the initial stage, and switches to low-speed fine adjustment when approaching the plate, which not only ensures the unfolding efficiency but also improves the positioning accuracy.

[0009] Furthermore, the rack is a rectangular column, and expansion plates are provided on the four sides of the rack, and the rack and the expansion plates are meshed with each other through meshing teeth.

[0010] This structure realizes the four-way synchronous expansion function and is particularly suitable for fixing special-shaped plates with complex contours. The expansion plates of adjacent positioning mechanisms can form a continuous support surface after expansion. As a preferred method, the edge of the expansion plate adopts a stepped bite structure. When expanding, the stepped teeth of adjacent expansion plates are interlocked with each other, which not only ensures the flatness of the splicing surface, but also enhances the overall rigidity through mechanical interlocking.

[0011] Furthermore, the four unfolding plates are connected to each other by oblique lines after being unfolded, and an electromagnet is arranged on the back of the unfolding plate. The electromagnet is started after the unfolding plate is unfolded and is used to adsorb the plate.

[0012] The diagonal splicing design enables the V-shaped seams to be formed at the splicing positions of the unfolding plates, so as to increase the contact area and is beneficial to dispersing the stress generated by the cutting vibration. As a preferred method, the electromagnets are arranged in a split type, and independent electromagnetic units are respectively arranged in the four quadrant areas on the back of the unfolding plates. When it is detected that a certain area does not contact the plate material, the corresponding electromagnetic unit can be automatically turned off, which not only saves energy consumption but also avoids magnetic interference. As another preferred method, a master control switch is arranged for each electromagnet on the back of the unfolding plate, and the master control switch is arranged directly below the rack. After the rack moves downward to drive the unfolding plate to be fully unfolded, it just contacts and triggers the master control switch.

[0013] Furthermore, it further includes a control system for controlling the driving member to drive the rack to move up and down. A pressure sensor connected to the control system is arranged at the top of each positioning mechanism, and the pressure sensor is used to sense whether there is a plate material on the positioning mechanism to serve as a starter for whether the control system starts the driving member.

[0014] After the pressure sensor senses that there is a plate material on it, it transmits a signal to the control system to centrally open the unfolding plates of these positioning mechanisms through the control system after the placement is completed, instead of opening the unfolding plates without a signal on the pressure sensor, so as to achieve the purpose of energy saving. Description of the Drawings

[0015] Figure 1 is an axonometric view of an embodiment of the present utility model;

[0016] Figure 2 is a sectional view of the positioning mechanism of an embodiment of the present utility model;

[0017] Figure 3 is a schematic diagram of the unfolded state of the unfolding plate of an embodiment of the present utility model. Detailed Embodiment

[0018] An irregular steel plate cutting device according to an embodiment of the present utility model is as Figures 1-3As shown: it includes a machine tool 1, on which a mobile frame 11 that can slide along its Y-axis direction is provided. A cutting mechanism 12 that can slide along the X-axis direction is installed on the mobile frame 11, and the cutting mechanism 12 includes a lifting shaft 122 and a cutting device 121 arranged at the front end of the lifting shaft 122, and the cutting device 121 can move along the Z-axis direction with the lifting shaft 122 to achieve three-dimensional spatial positioning. A plurality of positioning mechanisms 2 are evenly distributed on the table of the machine tool 1, and each positioning mechanism 2 is composed of a positioning column 21, a rectangular rack 22 located at the center of the positioning column 21, a driving member 23 that drives the rack 22 to rise and fall, and four groups of unfolding plates 24 distributed around the rack 22. The unfolding plate 24 is connected to the rack 22 through meshing teeth. When the rack 22 is driven by the driving member 23 to move downward, the four groups of unfolding plates 24 will be synchronously rotated outward from the storage state of fitting the surface of the positioning column 21 to the horizontal state, and the four unfolding plates 24 after unfolding are spliced ​​by bevel edges to form a complete plane. An electromagnet 242 is embedded on the back of each unfolding plate 24. When the unfolding plate 24 is fully unfolded, the electromagnet 242 is energized to generate an adsorption force. A pressure sensor 213 (a rack 22 in this embodiment) is provided at the top of each positioning mechanism 2. The pressure sensor 213 is connected to a control system (not shown in the figure). When the plate presses against the positioning mechanism 2, the pressure sensor 213 sends a signal to the control system (not shown in the figure), triggering the driving member 23 to drive the rack 22 to move downward and link the unfolding plate 24 to unfold.

[0019] The working principle of this embodiment is as follows: When the operator lays the special-shaped sheet flat on the top of the positioning mechanism 2, the weight of the sheet triggers the pressure sensor 213 at the top of the multiple positioning columns 21. After receiving the signal, the control system (not shown in the figure) synchronously starts the driving member 23 in each positioning column 21, driving the rack 22 to move downward. The rectangular structure of the rack 22 drives the four sets of unfolding plates 24 to rotate outward and unfold through the meshing teeth until they are completely horizontal and contact the bottom surface of the sheet. At this time, the rack 22 triggers the master switch 25 located at the bottom of its stroke for controlling the electromagnet 242 on the back of the unfolding plate 24 to energize the electromagnet 242 on the back of the unfolding plate 24, so that the sheet is firmly adsorbed and fixed. Then the cutting mechanism 12 moves along the XYZ three axes according to the preset program, and the cutting device 121 accurately cuts the special-shaped sheet that has been positioned. After the processing is completed, the electromagnet 242 is powered off to release the adsorption, and the unfolding plate 24 is reset and retracted with the rack 22, and the sheet can be easily removed.

Claims

1. A device for cutting special-shaped steel plates, comprising a machine tool, wherein the machine tool is provided with a movable frame that can slide along the Y-axis direction of the machine tool, the movable frame is provided with a cutting mechanism that can slide along the X-axis direction of the movable frame, the cutting mechanism comprises a lifting shaft and a cutting device arranged at the front end of the lifting shaft, and the cutting device can slide along the Z-axis direction under the drive of the lifting shaft, characterized in that: The machine tool is provided with a plurality of positioning mechanisms with gaps evenly distributed inside the machine tool. When a plate is placed on the positioning mechanisms, adjacent positioning mechanisms are unfolded and pressed against the surface of the plate. After the positioning mechanisms are pressed against the plate, the plate is fixed by adsorption.

2. The device for cutting special-shaped steel plates according to claim 1, characterized in that: The positioning mechanism includes a positioning column, a rack located at the center of the positioning column, a driving member for driving the rack to move up and down, and an expansion plate engaged with the upper end of the rack. When the driving member moves downward, the rack drives the expansion plate to rotate from being close to the surface of the positioning column to a state parallel to the plate.

3. The device for cutting special-shaped steel plates according to claim 2, characterized in that: The rack is a rectangular column, and expansion plates are arranged on the four sides of the rack. The rack and the expansion plates are meshed with each other through meshing teeth.

4. The device for cutting special-shaped steel plates according to claim 3, characterized in that: The four unfolding plates are connected to each other by diagonal lines after being unfolded. An electromagnet is arranged on the back of the unfolding plate. The electromagnet is started after the unfolding plate is unfolded and is used to adsorb the plate.

5. The device for cutting special-shaped steel plates according to claim 2, characterized in that: It also includes a control system for controlling the driving member to drive the rack to move up and down. A pressure sensor connected to the control system is provided at the top of each positioning mechanism. The pressure sensor is used to sense whether there is a plate on the positioning mechanism to serve as a starter for the control system to start the driving member.

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