Intelligent cutting machine for holographic glass dry plate

Abstract

The invention relates to a holographic glass dry plate intelligent cutting machine which comprises a base and motion system and a knife rest and cutting head assembly, the intelligent cutting machine adopts a'base moving-knife rest fixing 'mode, a motion control module drives a dry plate frame to move accurately, and complex graph cutting is achieved through track planning. Different from a traditional knife rest moving mode, the design reduces mechanical vibration sources, improves system rigidity, is provided with a plurality of cutting heads, can cut large-size holographic glass dry plates into dry plate small pieces in batches, improves the cutting efficiency exponentially, does not damage the holographic dry plates, and is suitable for large-scale production. Therefore, the problems that existing small pieces are different in size, low in yield and low in cutting efficiency are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of holographic material processing, in particular to an intelligent cutting machine for holographic glass dry plates. Background Art

[0002] Holographic glass sheets are a crucial substrate for producing holographic images, and their cutting quality directly impacts both the holographic imaging effect and product yield. With the widespread application of holographic technology in security, display, and art, the requirements for precision, efficiency, and quality in cutting holographic glass sheets are constantly increasing. Currently, holographic glass sheet cutting is primarily performed manually or semi-automatically, and these traditional cutting methods have numerous limitations.

[0003] Utility model CN206780457U discloses a holographic dry plate cutter that can cut holographic dry plates into small pieces of the required size using a glass cutting knife without damaging the holographic dry plates. This overcomes the defects of the existing manual cutting method, such as inconsistent piece sizes and damage to the latex photosensitive layer. However, the problem of low cutting efficiency still exists.

[0004] Background of the present invention: Starting from the practical need of solving the large demand for small dry plate pieces when preparing experimental courses, a batch cutting machine for holographic glass dry plates for teaching is designed and manufactured. The machine can cut large-sized holographic glass dry plates into small dry plate pieces for teaching in batches, thereby exponentially improving the cutting efficiency without damaging the holographic dry plates. This overcomes the problems of existing small pieces with different sizes, low yield and inefficient cutting methods.

[0005] Therefore, the present invention is specifically a holographic glass dry plate cutting device based on multi-level linkage and intelligent control, which can be applied to the efficient and high-precision batch cutting of holographic dry plates in teaching, scientific research, industry and other fields, and can especially solve the processing needs of dry plates with uneven thickness or curved surfaces. Summary of the Invention

[0006] In order to solve the technical problems of existing holographic dry plate cutting, such as inconsistent dry plate piece sizes, easy damage to the latex photosensitive layer during the cutting process, low cutting efficiency, low yield, and difficulty in meeting the processing requirements of dry plates with uneven thickness or curved surfaces, the present invention provides an intelligent holographic glass dry plate cutting machine to achieve the technical effects of batch cutting large-size holographic glass dry plates into small dry plate pieces for teaching, exponentially improving cutting efficiency, not damaging the holographic dry plates, high-efficiency, high-precision, low-damage batch cutting, and solving the processing requirements of dry plates with uneven thickness or curved surfaces.

[0007] The technical problem to be solved by this technical solution is: to provide a holographic glass dry plate cutting equipment based on multi-level linkage and intelligent control, and to achieve efficient, high-precision, and low-damage batch cutting of holographic dry plates through multi-blade synchronous dynamic focus and motion control and non-contact support collaborative protection technology.

[0008] A holographic glass dry plate intelligent cutting machine includes a base, a motion system, a knife holder, and multiple cutting head assemblies. The base is provided with a roller, the roller has a dry plate rack, an air groove is provided between the dry plate rack and the roller, the knife holder has a spring and an adjustment stud, the spring has a cutting head, and the focusing device and the airflow device are coaxial. The working mode of the intelligent cutting machine is that the base moves, the knife holder is fixed, and the motion system controls the dry plate rack to move in four dimensions on the base, driving the holographic glass dry plate to move for cutting.

[0009] Preferably, the base is provided with a high-precision H-class linear guide rail, the linear guide rail is provided with an air groove, and the bottom of the dry plate rack is provided with an air bearing slider, and the air bearing slider and the base guide rail air groove form an air flow support.

[0010] Preferably, the spring has a spring and an air pressure buffer assembly; the air pressure buffer assembly is provided with a multi-chamber cylinder, the spring is designed as an inner and outer double spring, and the spring pressure is controlled separately by the air pressure buffer assembly.

[0011] Preferably, the cutting head is provided with a knife seat, the knife seat is provided with a central axis and a damping device, the airflow device is designed on both sides of the central axis, the cutting head is installed on the central axis, and the focusing device is arranged on both sides of the blade of the cutting head.

[0012] Preferably, the roller drum is driven by a servo motor with a closed-loop encoder and a gear rack, and a magnetic damper is installed on the shaft end of the roller drum.

[0013] Preferably, the drying plate rack is provided with a dual device of vacuum adsorption and mechanical clamping, and the mechanical clamping device adopts an elastic chuck in combination with a positioning pin.

[0014] Preferably, the motion system includes dynamic focus and motion trajectory planning. The dynamic focus is combined with the ranging sensor data to adjust the focusing device in real time through the PID control algorithm. The motion trajectory planning uses a quintic polynomial interpolation algorithm to generate a smooth cutting trajectory, combined with speed forward control, to automatically decelerate at right-angle turns.

[0015] Preferably, the intelligent cutting machine adopts industrial-grade PLC and motion control card integrated sensor interface control, and supports CAD drawing import and cutting path editing.

[0016] The beneficial effects of the present invention are:

[0017] 1. By adopting multi-level linkage and intelligent control technology, combined with industrial-grade PLC and motion control card integrated sensor interface control, high-precision cutting of holographic dry plates is achieved, solving the problem of inconsistent dry plate sizes in existing technologies. The use of multi-tool synchronous dynamic focus and motion control technology, combined with distance measurement sensors and PID control algorithms to adjust the focus device in real time, can adapt to the processing needs of dry plates with uneven thickness or curved surfaces.

[0018] 2. By applying airflow non-contact support technology, the high-precision H-class linear guide on the base and the air bearing slider at the bottom of the dry plate rack form airflow support, effectively avoiding damage to the latex photosensitive layer during the cutting process;

[0019] 3. Through the synchronous operation of multiple cutting head components, combined with the smooth cutting trajectory generated by the quintic polynomial interpolation algorithm and the speed forward control, the cutting efficiency is multiplied, and efficient batch cutting of holographic dry plates is achieved; combined with the dual devices of vacuum adsorption and mechanical clamping on the dry plate rack, the stability of the dry plate during the cutting process is ensured, and the yield rate is improved.

[0020] Compared with the existing technology, the intelligent cutting machine for holographic glass dry plates of the present invention achieves efficient, high-precision, and low-damage batch cutting of holographic dry plates through the organic combination of technical means such as multi-level linkage and intelligent control, multi-blade synchronous dynamic focusing and motion control, and air film non-contact support and protection. It is particularly suitable for cutting large-sized holographic glass dry plates into small dry plate pieces for teaching purposes, and can also meet the processing needs of dry plates with uneven thickness or curved surfaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 This is a structural diagram of the air pressure buffer assembly of the present invention.

[0023] Figure 3 This is a structural diagram of the cutting head of the present invention.

[0024] Figure 4 It is a base structure diagram of the present invention. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present invention.

[0026] like Figure 1-4As shown, an intelligent cutting machine for holographic glass dry plates comprises a base, a motion system, a tool holder, and multiple cutting head assemblies. Base 1 is equipped with a roller 11, on which a plate rack 12 is mounted. An air film is formed between the plate rack 12 and roller 11 via an air bearing and air groove combination. Tool holder 2 is equipped with a spring 21 and an adjustment stud 22. Spring 21 is mounted with a cutting head 23, which is equipped with a focusing device 23-1 and an airflow device 23-2. The focusing device 23-1 and the airflow device 23-2 are coaxially arranged. The intelligent cutting machine operates with the base moving and the tool holder stationary. The motion system controls the plate rack's four-dimensional movement on the base, driving the movement of the holographic glass dry plates for cutting.

[0027] Base 1 is made of high-strength aluminum alloy, with a precision-machined surface ensuring a flatness of 0.01 mm / m. It is equipped with a high-precision, H-class linear guide 11-1, which is defined by air grooves 11-2. An air bearing slider is mounted on the bottom of the drying rack 12. This air bearing slider forms an airflow support with the base rail air grooves 11-2, ensuring an extremely low coefficient of friction as the drying rack moves on the base, improving motion accuracy.

[0028] The idler roller 11 is driven by a servo motor and rack-and-pinion system with a closed-loop encoder. The servo motor is an AC servo motor with a rated power of 750W and a maximum speed of 3000rpm. The closed-loop encoder has an accuracy of 10,000 lines per revolution, enabling precise position control. The rack-and-pinion system uses a precision-machined 1.5-module gear combination to ensure transmission accuracy. A magnetic damper, designed using a combination of permanent magnets and conductive materials, is installed at the end of the idler roller shaft. This damper effectively suppresses vibrations generated by the roller during high-speed operation, improving system stability.

[0029] The drying rack 12 is made of lightweight carbon fiber composite material, characterized by high strength and low thermal expansion coefficient. It is equipped with a dual vacuum suction and mechanical clamping device 13. The vacuum suction system uses a vacuum pump to provide a stable negative pressure source. The vacuum suction nozzle is designed on the upward side of the drying rack 12. The mechanical clamping device uses an elastic chuck with a design locating pin. The elastic chuck is made of a special alloy material with excellent elasticity and wear resistance.

[0030] The tool holder 2 is constructed from high-rigidity cast iron, aged and precision-machined to ensure long-term deformation resistance. The spring on the tool holder 2 is made from a special alloy, offering excellent elasticity and fatigue resistance. The tool holder 2 is equipped with a spring 21 and a pneumatic buffer assembly 21-1. The pneumatic buffer assembly 21-1 comprises a cylinder 21-2 and a pressure regulating valve 21-3. The operating pressure of the cylinder 21-2 ranges from 0.2 to 0.8 MPa, allowing for precise adjustment of pressure for holographic glass plates of varying thickness. The adjusting stud 22 features a precision thread design with a pitch of 0.5 mm, enabling micro-adjustments within a range of 0 to 10 mm.

[0031] The cutting head 23 features a modular design for easy replacement and maintenance. A range sensor within the focusing mechanism on the cutting head monitors the distance between the cutting head and the surface of the holographic glass plate in real time. A peripheral annular compressed air flow with a pressure of 0.3-0.5 MPa forms an annular airflow barrier, effectively preventing debris from splashing during cutting and assisting in cooling the cutting area.

[0032] The motion system includes dynamic focus and motion trajectory planning. Dynamic focus combines data from the ranging sensor with real-time adjustment of the focusing device through a PID control algorithm. The PID control parameters can be optimized according to different cutting materials and thicknesses. Generally, the P parameter is set to 0.8-1.2, the I parameter is set to 0.05-0.15, and the D parameter is set to 0.2-0.4. Motion trajectory planning uses a quintic polynomial interpolation algorithm to generate a smooth cutting trajectory. Combined with speed look-ahead control, it automatically decelerates at right-angle turns to ensure cutting quality. The quintic polynomial interpolation algorithm can ensure the continuity of position, velocity, and acceleration, avoiding sudden changes during the cutting process. Look-ahead control can calculate the motion trajectory 100-500ms in advance to achieve a smooth transition.

[0033] The intelligent cutting machine is controlled by an industrial-grade PLC and motion control card with integrated sensor interfaces. The PLC uses the Siemens S7-1500 series, offering high-speed processing capabilities and a rich set of communication interfaces. The motion control card supports 8-axis synchronous control, interpolation accuracy of ±0.001mm, and supports CAD drawing import and cutting path editing. The system is equipped with a 10.4-inch color touchscreen with a user-friendly interface and supports the import of multiple file formats, including DXF, DWG, and PLT.

[0034] The linear guide rail 11-1 is provided with an air groove 11-2, which is 0.5 mm deep and 2 mm wide. The inner wall of the air groove is precision-ground to a surface roughness Ra of less than 0.2 μm. An air bearing slider 12-1 is mounted at the bottom of the drying rack 12. Made of porous ceramic material with excellent gas permeability and mechanical strength, the air bearing slider 12-1 forms an airflow support with the base rail air groove 11-2, ensuring extremely low friction and high-precision positioning of the drying rack as it moves on the base.

[0035] The spring under pneumatic buffer assembly 21-1 utilizes a dual-spring design, with the inner and outer springs having different spring constants: the inner spring has a spring constant of 5 N / mm, and the outer spring has a spring constant of 8 N / mm. This creates nonlinear elastic characteristics, better adapting to varying cutting force requirements. Pneumatic buffer assembly 21-1 utilizes a micro-cylinder design. Cylinder 21-2 has a diameter of 25 mm and a stroke of 15 mm. The operating pressure can be adjusted within a range of 0.2-0.8 MPa, with a pressure adjustment accuracy of 0.01 MPa.

[0036] Among them, the cylinder 21-2 is a multi-chamber design, which controls the connection or isolation of the chamber through the solenoid valve to achieve switching of different volumes and control the inner and outer layers of springs to have different elastic coefficients.

[0037] Among them, a tool holder 24 is provided on the cutting head 23, a central axis 24-1 and a damping device 24-2 are provided on the tool holder 24, the airflow device 23-2 is designed on both sides of the central axis 24-1, the cutting head 23 is installed on the central axis 24-1, the focusing device 23-1 is arranged on both sides of the blade of the cutting head 23, and the central axis 24-1 and the tool holder 24 are locked by fastening screws 24-3.

[0038] The idler roller is driven by a servo motor and rack and pinion with a closed-loop encoder. The servo motor is an AC servo motor with a rated power of 1000W and a maximum speed of 4000rpm. The closed-loop encoder has an accuracy of 20,000 lines per revolution, and the position control accuracy reaches ±0.001mm. A magnetic damper is installed on the shaft end of the idler roller. The magnetic damper is designed with a combination of rare earth permanent magnets and a high-conductivity copper alloy. The damping coefficient can be adjusted within the range of 0.5-2.0N·m·s / rad, which can more effectively suppress the vibration generated by the idler roller during high-speed operation, improving system stability and positioning accuracy.

[0039] The plate rack is equipped with both vacuum suction and mechanical clamping devices. The vacuum suction device consists of multiple independently controlled vacuum cups evenly distributed across the rack surface, achieving a vacuum level of -90kPa. A vacuum pump and vacuum gas tank provide a stable negative pressure source. The mechanical clamping device utilizes an elastic chuck with a design locating pin. The chuck is made of titanium alloy, offering enhanced elasticity and wear resistance. The clamping force is adjustable between 10-50N. The locating pin is made of ceramic with an extremely low thermal expansion coefficient, improving positioning accuracy to ±0.005mm. The plate rack is also equipped with an anti-static device to prevent static electricity generated during the cutting process from affecting the holographic glass plates.

[0040] The outer annular compressed air flow has a pressure of 0.4 MPa and utilizes a vortex design to form a stable annular airflow barrier. The annular airflow has an outer diameter of 10 mm, an inner diameter of 3 mm, and an airflow velocity of 80 m / s. The spring pressure and annular airflow are adjusted via independent control valves, allowing for optimized settings based on different cutting materials and thicknesses. The airflow mechanism is also equipped with a micro-heating element that heats the airflow to a temperature range of 40-60°C, improving cutting efficiency and quality.

[0041] The motion system's dynamic focus utilizes an adaptive PID control algorithm, automatically adjusting control parameters based on feedback during the cutting process. The P parameter ranges from 0.5-1.5, the I parameter ranges from 0.02-0.2, and the D parameter ranges from 0.1-0.5, with a control cycle of 1ms. The system also incorporates fuzzy control logic to automatically optimize control parameters based on cutting speed and material thickness. Motion trajectory planning utilizes a quintic polynomial interpolation algorithm and also incorporates B-spline curve interpolation, enabling better handling of complex curve cutting tasks. The speed look-ahead control calculation time has been extended to 800ms, allowing the system to automatically adjust cutting speed based on trajectory curvature, with a 50%-80% reduction in right-angle turns, ensuring cutting quality while improving processing efficiency. The motion system also incorporates vibration monitoring, using accelerometers to monitor system vibration in real time. When vibration exceeds a set threshold, motion parameters will be automatically adjusted or an alarm will be issued.

[0042] The intelligent cutting machine utilizes an industrial-grade PLC and motion control card with integrated sensor interfaces. The PLC utilizes the high-end Siemens S7-1500 series, boasting a CPU processing speed of 5ns / instruction, higher processing power, and a wider range of communication interfaces, including PROFINET, PROFIBUS, and Ethernet / IP. The motion control card supports 12-axis simultaneous control, interpolation accuracy increased to ±0.0005mm, and supports the import of more complex CAD drawings and cutting path editing. The system is equipped with a 15-inch high-resolution color touchscreen with a resolution of 1920×1080, offering a more user-friendly interface and support for importing more file formats, including DXF, DWG, PLT, AI, and SVG. The system also incorporates remote monitoring and diagnostic capabilities, allowing users to remotely view machine operating status, modify parameters, and diagnose faults via the internet. The system also features data logging and analysis, recording cutting parameters, machine status, and process quality data, enabling optimization of cutting process parameters through big data analysis.

[0043] In actual application, the workflow of the holographic glass dry plate intelligent cutting machine is as follows: first, the holographic glass dry plate is placed on the dry plate rack and fixed by vacuum adsorption and mechanical clamping; then the CAD drawing is imported through the touch screen and the cutting parameters are set; the system automatically plans the cutting path and optimizes it; after starting the cutting program, the motion system controls the four-dimensional movement of the dry plate rack on the base, driving the holographic glass dry plate to move along the preset trajectory; at the same time, the cutting head maintains a fixed position and adjusts the focal length in real time through the dynamic focus system to ensure cutting accuracy; during the cutting process, the central cutting head and the outer annular compressed air flow work together to ensure cutting quality; after cutting is completed, the system automatically stops and waits for the operator to take out the processed product.

[0044] This holographic glass dry plate intelligent cutting machine has the following advantages: the base moves and the tool holder is fixed in the working mode, which reduces the movement of the cutting head and improves the cutting accuracy; the airflow support system greatly reduces friction and improves the movement smoothness; dynamic focus and motion trajectory planning ensure cutting quality; the annular airflow design effectively prevents oxidation and debris splashing during the cutting process; the modular design facilitates maintenance and upgrades.

[0045] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0046] Finally, it should be noted that the above implementation methods are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A holographic glass plate intelligent cutting machine, comprising a base, a motion system, a tool holder, and multiple cutting head assemblies, characterized in that: The base is provided with a roller drum, the roller drum is provided with a drying plate rack, an air groove is provided between the drying plate rack and the roller drum, the knife holder is provided with a spring and an adjusting stud, the spring is provided with a cutting head, the cutting head is provided with a focusing device and an airflow device, the focusing device and the airflow device are coaxial, the working mode of the intelligent cutting machine is that the base moves, the knife holder is fixed, and the motion system controls the four-dimensional movement of the drying plate rack on the base to drive the holographic glass drying plate to move for cutting.

2. The intelligent cutting machine for holographic glass dry plates according to claim 1, characterized in that: The base is provided with a high-precision H-class linear guide rail, the linear guide rail is provided with an air groove, the bottom of the dry plate rack is provided with an air bearing slider, and the air bearing slider and the base guide rail air groove form air flow support.

3. The intelligent cutting machine for holographic glass dry plates according to claim 1, characterized in that: A pneumatic buffer assembly is provided on the spring; and a multi-chamber cylinder is provided on the pneumatic buffer assembly.

4. The intelligent cutting machine for holographic glass dry plates according to claim 1, characterized in that: The spring is designed as an inner and outer double spring, and the spring pressure is controlled by the air pressure buffer assembly.

5. The intelligent cutting machine for holographic glass dry plates according to claim 1, characterized in that: The cutting head is provided with a knife seat, the knife seat is provided with a central axis and a damping device, the airflow device is designed on both sides of the central axis, the cutting head is installed on the central axis, and the focusing device is arranged on both sides of the blade of the cutting head.

6. The intelligent cutting machine for holographic glass dry plates according to claim 1, characterized in that: The drying plate rack is provided with vacuum adsorption and mechanical clamping devices, and the mechanical clamping devices are designed on both sides of the drying plate rack.

7. The intelligent cutting machine for holographic glass dry plates according to claim 1, characterized in that: The motion system includes dynamic focus and motion trajectory planning. The dynamic focus is combined with the ranging sensor data to adjust the focus device in real time through the PID control algorithm. The motion trajectory planning uses a quintic polynomial interpolation algorithm to generate a smooth cutting trajectory, combined with speed forward control, to automatically decelerate at right-angle turns.

8. The intelligent cutting machine for holographic glass dry plates according to claim 1, characterized in that: The intelligent cutting machine is controlled by an industrial-grade PLC and a motion control card integrated with a sensor interface, and supports CAD drawing import and cutting path editing.

Images