Oxyacetylene ablation instrument

Abstract

The invention provides an oxyacetylene ablation instrument which comprises a workbench, the workbench is provided with an ablation area, a sample disc, a sample assembly tool, an ablation rotating tool and a thickness measuring mechanism, an ablation gun is arranged in the ablation area, the front end of the ablation gun and the ablation rotating tool are oppositely arranged, and the tail end of the ablation gun is connected with a gas supply pipeline system; the sample disc is arranged on one side of the ablation area, and the ablation rotating tool is arranged between the sample disc and the ablation area; the sample assembler is arranged between the ablation rotating tool and the sample disc and is used for assembling a sample on the ablation rotating tool; a sample transferring mechanism for transferring a sample in the sample disc among the sample disc, the thickness measuring mechanism and the ablation rotating tool is also arranged above the sample disc. Multiple groups of samples can be continuously tested, the testing efficiency is high, the components of the ablation instrument are reasonably matched, and the ablation testing process of a single sample is simple, convenient and efficient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oxygen-acetylene ablation device, and particularly to an oxygen-acetylene ablation instrument. BACKGROUND

[0002] With the progress of material science and technology, the requirement for the tolerance of materials in high-temperature combustion environment is increasing, and the oxygen-acetylene ablation instrument as an important equipment for evaluating the ablation resistance of materials has wide application value in the fields of aerospace, automobile manufacturing, electronic equipment, etc. The traditional oxygen-acetylene test machine refers to the standard GJB 323A-96, single gun and single sample, manual sampling, and manual thickness measurement. At present, the oxygen-acetylene ablation instrument is executed according to GJB 323B-2018. Due to the large number of test samples, the existing equipment has low test efficiency, and the ablation smell is large and the environment is not friendly, so it is necessary to develop an environmentally friendly, efficient and stable ablation equipment. SUMMARY

[0003] The present application aims to overcome the defects of the prior art, and provides an oxygen-acetylene ablation instrument for simulating oxygen and acetylene combustion environment to evaluate the ablation resistance of materials, which can test multiple groups of samples at a time, has high test efficiency, and the components of the ablation instrument are reasonably matched, and the ablation test process of a single sample is simple and efficient.

[0004] The present application provides the following technical scheme:

[0005] The present application provides an oxygen-acetylene ablation instrument, which comprises a workbench, an ablation zone, a sample disc, a sample assembly tool, an ablation rotating tool and a thickness measuring mechanism are arranged on the workbench, an ablation gun is arranged in the ablation zone, the front end of the ablation gun is arranged opposite to the ablation rotating tool, and a gas supply pipeline system is connected to the tail end of the ablation gun; the sample disc is arranged on one side of the ablation zone, and the ablation rotating tool is arranged between the sample disc and the ablation zone; the sample assembly tool is arranged between the ablation rotating tool and the sample disc, and is used for assembling the sample on the ablation rotating tool; a sample transfer mechanism is further arranged above the sample disc, and is used for transferring the sample in the sample disc between the sample disc, the thickness measuring mechanism and the ablation rotating tool;

[0006] The ablation rotating tool comprises a sample assembly table and a rotating seat, the sample assembly table comprises a base, sample assembly stations are arranged at both ends of the base, a sample ejecting device is arranged in the base and used for ejecting the sample from the sample assembly station, and the rotating seat is arranged at the bottom of the workbench and connected to the base through a connecting column penetrating the workbench;

[0007] The thickness measuring mechanism comprises a thickness gauge and a thickness measuring table, the thickness gauge is arranged above the thickness measuring table, and an adsorption and turnover mechanism is arranged beside the thickness measuring table, the adsorption and turnover mechanism comprises a fixing table and a turnover table, the turnover table is rotationally connected with the fixing table, and a clamping device and a vacuum adsorption device are arranged in the turnover table.

[0008] The oxyacetylene ablation instrument can perform one-time ablation test on multiple groups of samples, and multiple groups of samples to be tested can be placed on the sample tray according to numbers. The test process of a single sample is as follows: first, the sample is transferred to the thickness measuring table of the thickness measuring mechanism by the sample transfer mechanism to perform pre-ablation thickness measurement, after the thickness measurement is completed, the turnover table of the adsorption and turnover mechanism is turned over to the upper side of the thickness measuring table to adsorb the sample, then the sample is transferred by the sample transfer mechanism, and then the sample is assembled to the sample assembly station of the ablation rotating tool by the sample assembly tool; then, the ablation rotating tool is rotated by 180 degrees, so that the sample on the sample assembly station is close to the ablation gun in the ablation area, and the ablation is started, after the ablation is completed, the ablation rotating tool is rotated by 180 degrees, the sample is away from the ablation gun, and the sample is separated from the sample assembly station under the action of the sample ejection device; finally, the sample is transferred to the adsorption and turnover mechanism by the sample transfer mechanism, the turnover table of the adsorption and turnover mechanism is turned over to the upper side of the thickness measuring table, and the sample is placed down to perform post-ablation thickness measurement, after the thickness measurement is completed, the sample is transferred to the sample tray by the sample transfer mechanism.

[0009] The ablation rotating tool of the device is provided with sample assembly stations on both sides, and the rotation design of the sample assembly table and the rotating seat greatly improves the test efficiency.

[0010] Further, a support frame connected with the workbench is arranged above the sample tray, the sample transfer mechanism is arranged on the support frame, the sample transfer mechanism comprises a guide rail support assembly, the guide rail support assembly comprises first and second screw rod guide rail modules arranged in parallel, a third screw rod guide rail module is connected between the first and second screw rod guide rail modules, first sliding seats are arranged on both sides of the lower end of the third screw rod guide rail module, and the third screw rod guide rail module is slidably connected with the first and second screw rod guide rail modules through the first sliding seats; a second sliding seat is arranged on the side surface of the third screw rod guide rail module, a grabbing assembly is arranged on the second sliding seat, the grabbing assembly comprises a rotating table connected to the lower end of the second sliding seat and a grabbing seat connected with the rotating table, first and second sliding platforms are respectively arranged on both sides of the interior of the grabbing seat, a first clamping jaw is arranged on the first sliding platform, and a second clamping jaw is arranged on the second sliding platform.

[0011] Further, the ablation area is provided with an ablation protective cover, a limiting guide groove is formed in the sidewall of the ablation protective cover, a guide rod is arranged in the limiting guide groove, a fixing seat is slidably connected to the guide rod, the ablation gun is mounted on the fixing seat, a position adjusting mechanism is further connected to the tail end of the ablation gun, the position adjusting mechanism comprises a fourth screw rod guide rail module and an adjusting base, the adjusting base is slidably arranged on the fourth screw rod guide rail module, an adjusting plate is fixedly connected to the adjusting base, and the adjusting plate is fixedly connected with the ablation gun.

[0012] Further, an ablation station hole is further formed in the sidewall of the ablation protective cover opposite to the limiting guide groove, a tool feeding device is further arranged at the bottom of the ablation rotating tool, the tool feeding device drives the ablation rotating tool to move, so that the sample assembly worker is in and out of the ablation station hole, and the tool feeding device comprises a base frame, a fifth screw rod guide rail module is connected to the bottom surface of the base frame, a feeding seat is sleeved on the screw rod of the fifth screw rod guide rail module, and the feeding seat is connected with the bottom of the rotating seat through a cushion block.

[0013] Further, a heat flow density calibration unit is further arranged on the sidewall of the ablation protective cover opposite to the limiting guide groove, and the heat flow density calibration unit is arranged beside the ablation station hole.

[0014] Further, the sample ejection device comprises a pressing seat and a pressing cylinder, a guide rail groove is formed in the bottom surface of the pedestal, the pressing seat is slidably arranged on the guide rail groove, the pressing seat is connected with the pressing cylinder through a connecting block on one side, and a pressing rod is arranged on the side of the pressing seat close to the sample assembly station.

[0015] Further, the sample assembly tool comprises a mounting seat, a lifting slide cylinder and an ejecting slide cylinder, the mounting seat is arranged on the workbench, the lifting slide cylinder is arranged at the bottom of the mounting seat, the ejecting slide cylinder is arranged at the top of the mounting seat, and an ejecting rod is further connected to the side of the ejecting slide cylinder close to the ablation rotating tool.

[0016] Further, an exhaust duct system is connected to the upper end of the ablation protective cover, the exhaust duct system comprises a centrifugal fan, a connecting air pipe and an exhaust pipe, the centrifugal fan is mounted on the upper end of the ablation protective cover, the connecting air pipe is in communication with the ablation protective cover and connected with the centrifugal fan, an interface is arranged on the side of the connecting air pipe, and the exhaust pipe is connected with the interface.

[0017] Further, the gas supply pipeline system comprises an oxygen supply pipeline, an acetylene supply pipeline, a flow controller and a pressure controller, the flow controller and the pressure controller are arranged on the oxygen supply pipeline and the acetylene supply pipeline, and the oxygen supply pipeline and the acetylene supply pipeline are connected with the ablation gun.

[0018] Furthermore, a water-cooled circulating pump and a water circuit monitoring unit are connected by pipes under the workbench, and the water circuit monitoring unit is connected to the ablation gun by pipes.

[0019] Furthermore, the oxyacetylene ablation apparatus is equipped with a control module. This control module is electrically connected to the thickness measurement mechanism, sample transfer mechanism, ablation gun, ablation rotating fixture, sample assembly fixture, gas supply system, exhaust system, and water monitoring unit. The control module is a PLC control unit. This instrument features fully automated operation, including automatic feeding, pre- / post-ablation sample thickness measurement, ignition, ablation, water bath cooling, ablation rate calculation, and unloading / stacking, thus achieving fully automated ablation testing functionality.

[0020] The present invention has the following beneficial effects:

[0021] 1. The oxyacetylene ablation apparatus of the present invention can complete the continuous ablation test of multiple sets of samples. The process coordination between the sample assembly fixture, the ablation rotating fixture, the thickness measuring mechanism and the sample transfer mechanism is reasonably designed, and the sample transfer operation is convenient. At the same time, the design of the ablation rotating fixture greatly improves the test efficiency of the sample.

[0022] 2. The oxyacetylene ablation instrument of the present invention is equipped with a heat flux density calibration unit. Before ablation, the instrument is calibrated by the heat flux density calibration unit. After the specified value is met, the ablation test is performed, which ensures the accuracy of the test.

[0023] 3. This invention can adopt fully automated process control to automatically complete processes such as feeding, thickness measurement of samples before / after ablation, ignition, ablation, water bath circulation cooling, ablation rate calculation, and unloading and stacking, thereby realizing the instrument's fully automated ablation test function. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of an oxyacetylene ablation apparatus in one embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the sample transfer mechanism in one embodiment of the present invention;

[0027] Figure 3 for Figure 2 A structural diagram from another angle;

[0028] Figure 4 This is a schematic diagram of the thickness measuring mechanism in one embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of the ablation protection shield in one embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of the position adjustment structure in one embodiment of the present invention;

[0031] Figure 7 This is a schematic diagram of the structure of the ablation rotary tool in one embodiment of the present invention;

[0032] Figure 8 This is a top view of an ablation rotary tooling in one embodiment of the present invention;

[0033] Figure 9 This is a schematic diagram of the sample assembly fixture in one embodiment of the present invention;

[0034] Figure 10 This is a schematic diagram of the overall structure of the oxyacetylene ablation apparatus in one embodiment of the present invention;

[0035] Figure 11 This is a schematic diagram of the internal structure of an oxyacetylene ablation apparatus in one embodiment of the present invention;

[0036] In the diagram: 1-Workbench; 2-Ablation zone; 3-Ablation rotary fixture; 4-Sample transfer mechanism; 5-Sample tray; 6-Thickness gauge; 7-Thickness measuring platform; 8-Adsorption and flipping mechanism; 9-Sample assembly fixture; 10-Sample; 11-Cabinet; 12-Support frame; 13-Exhaust duct system; 14-Air supply duct system; 15-Water-cooled circulating pump; 16-Water circuit monitoring unit; 17-Power distribution board; 201-Ablation gun; 202-Ablation protective cover; 203-Limiting guide groove; 204-Fourth lead screw guide rail module; 205-Ablation station hole; 206-Heat flux density calibration unit; 207-Thermal imaging temperature sensor; 208-Adjusting base; 209-Adjusting plate; 301-Sample assembly table; 302-Rotating seat; 303-Sample assembly station; 304-Connecting column; 305-Base frame; 306-Fifth lead screw guide rail Module; 307-Feed seat; 308-Padded block; 309-Base; 310-Guide rail groove; 311-Top pressure seat; 312-Connecting block; 313-Top pressure cylinder; 314-Top pressure rod; 401-First lead screw guide rail module; 402-Second lead screw guide rail module; 403-Third lead screw guide rail module; 404-First slide; 405-Second slide; 406-Rotating table; 407-Gripper; 40 8-First slide; 409-Second slide; 410-First gripper; 411-Second gripper; 412-X-axis servo motor; 413-Y-axis servo motor; 414-Rotary servo motor; 415-Pneumatic module mounting platform; 801-Fixed platform; 802-Tilting platform; 803-Holder; 901-Mounting base; 902-Lifting slide cylinder; 903-Ejecting slide cylinder; 904-Ejecting rod. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 are within the scope of protection of the present invention.

[0038] See Figure 1This invention provides an oxyacetylene ablation apparatus, including a workbench 1 (only the workbench surface is shown in the figure, and the specific structure of the workbench 1 is not limited). The workbench 1 is provided with an ablation zone 2, a sample tray 5, a sample assembly fixture 9, an ablation rotating fixture 3, and a thickness measuring mechanism. An ablation gun 201 is provided in the ablation zone 2. The front end of the ablation gun 201 is opposite to the ablation rotating fixture 3, and the tail end of the ablation gun 201 is connected to a gas supply pipeline system 14. The sample tray 5 is located on one side of the ablation zone 2, and the ablation rotating fixture 3 is located between the sample tray 5 and the ablation zone 2. The sample assembly fixture 9 is located between the ablation rotating fixture 3 and the sample tray 5 for assembling the sample onto the ablation rotating fixture 3. Above the sample tray 5, there is also a sample transfer mechanism 4 for transferring the sample in the sample tray 5 between the sample tray 5, the thickness measuring mechanism, and the ablation rotating fixture 3 (the support mechanism of the sample transfer mechanism 4 is not shown in the figure).

[0039] The ablation rotary fixture 3 includes a sample assembly table 301 and a rotary seat 302 (driven by a servo motor). The sample assembly table 301 includes a base 309, with sample assembly stations 303 at both ends of the base 309. The base 309 is equipped with a sample ejection device that ejects the sample from the sample assembly station 303. The rotary seat 302 is located at the bottom of the workbench 1 and is connected to the base 309 through a connecting column 304 passing through the workbench 1.

[0040] The thickness measuring mechanism includes a thickness gauge 6 and a thickness measuring platform 7. The thickness gauge 6 is located above the thickness measuring platform 7. A suction and flipping mechanism 8 is also provided on the side of the thickness measuring platform 7. The suction and flipping mechanism 8 includes a fixed platform 801 and a flipping platform 802. The flipping platform 802 is rotatably connected to the fixed platform 801. A clamp 803 and a vacuum suction device are provided inside the flipping platform 802.

[0041] This oxyacetylene ablation apparatus can perform simultaneous ablation tests on multiple sets of samples. Multiple sets of samples can be placed on the sample tray 5 according to their numbers. Sample transfer and thickness measurement are accomplished through the sample tray 5, sample transfer mechanism 4, sample assembly fixture 9, and thickness measurement mechanism. The ablation test is performed using the ablation gun 201 and the ablation rotating fixture 3. Furthermore, the ablation rotating fixture 3 is rotatable, allowing samples to be placed at both sample assembly stations 303. While ablation is being performed at one end, samples can be loaded onto the other end simultaneously. After ablation, the rotating seat 302 drives the sample assembly stage 301 to rotate, switching the positions of the two ends. The end with the sample can continue ablation testing, while the ablated end can be unloaded and reloaded. This process significantly improves the overall testing efficiency while testing multiple sets of samples.

[0042] In this device, 50 samples can be placed on the sample tray 5. After the samples are numbered, they can be tested one by one in sequence. The thickness gauge 6 adopts line laser non-contact thickness measurement and selects the Keyence LJ-S8000 series fully automatic three-dimensional scanning 3D vision system, with a measurement accuracy guaranteed to be ±0.01mm. The sample transfer mechanism 4 realizes the transfer and transportation of the samples, and can be achieved by a multi-axis robot or other mechanism.

[0043] In another preferred embodiment, a support frame 12 connected to the workbench 1 is provided above the sample tray 5. The sample transfer mechanism 4 is provided on the support frame 12. The sample transfer mechanism 4 includes a guide rail bracket assembly, which includes a first lead screw guide rail module 401 and a second lead screw guide rail module 402 arranged in parallel. A third lead screw guide rail module 403 is connected between the first lead screw guide rail module 401 and the second lead screw guide rail module 402. A first slide block 404 is provided on both sides of the lower end of the third lead screw guide rail module 403. The third lead screw guide rail module 403 is connected to the first lead screw guide rail module 404 via the first lead screw guide rail module 402. A slide block 404 is slidably connected to the first lead screw guide module 401 and the second lead screw guide module 402; the third lead screw guide module 403 has a second slide block 405 on its side, and a gripping assembly is provided on the second slide block 405. The gripping assembly includes a rotary table 406 connected to the lower end of the second slide block 405 and a gripping seat 407 connected to the rotary table 406. The gripping seat 407 has a first slide 408 and a second slide 409 on its two sides. The first slide 408 has a first gripper 410 and the second slide 409 has a second gripper 411.

[0044] The support frame 12 serves to support the sample transfer mechanism 4. Its specific form is not limited; it simply needs to be connected and cooperate with the worktable 1 to provide support for the sample transfer mechanism 4. (See also...) Figure 2 , Figure 3 The first lead screw guide module 401 and the second lead screw guide module 402 are driven by the X-axis servo motor 412, which can drive the third lead screw guide module 403 to move along the X-axis. The third lead screw guide module 403 is driven by the Y-axis servo motor 413, which drives the second slide 405 to move in the Y-axis direction. The second slide 405 is provided with a gripping component. The rotary table 406 of the gripping component is driven by the rotary servo motor 414. The gripping seat 407 is provided with a first slide 408 and a second slide 409. The first slide 408 and the second slide 409 are both pneumatically controlled (with a pneumatic module mounting platform 415), which respectively drive the first gripper 410 and the second gripper 411 to move along the Z-axis.

[0045] In this embodiment, the sample transfer mechanism 4 is designed with a rotary table 406 and two grippers. The two grippers hold the sample 10 in different states (the first gripper 410 holds the sample 10 in a flat position, and the second gripper 411 holds the sample 10 in a vertical position). This is designed to facilitate thickness measurement and sample assembly. Specifically, see [link to documentation]. Figure 1 , 4 , ( Figure 4 In this process, the thickness gauge 6 uses a rotating rod to change its orientation. When thickness measurement is required, the test head of the thickness gauge 6 rotates onto the thickness measuring platform 7. When thickness measurement is not required, it can rotate to other positions to prevent interference with the sample transfer mechanism 4. When gripping the sample 10, the first gripper 410 grips it and then places it on the thickness measuring platform 7 for pre-ablation thickness measurement. Then, it is adsorbed onto the flipping platform 802 of the flipping mechanism 8. Figure 4 The sample 10 is rotated 180° counterclockwise from its initial position to above the thickness measuring platform 7, where it is adsorbed and clamped by the holder 803. The flipping platform 802 then rotates 90° clockwise, and the sample 10 on top is picked up by the second gripper 411 and transferred to the ablation rotary fixture 3. After ablation, the sample 10 is unloaded and the thickness is measured in the same way. The sample 10 is transferred to the flipping platform 802 (which is in a vertical position at this time) by the second gripper 411. The flipping platform 802 rotates 90° counterclockwise, and the sample 10 is placed on the thickness measuring platform 7 for ablation and thickness measurement. After the thickness measurement is completed, the sample 10 is picked up by the first gripper 410 and placed back into the sample tray 5.

[0046] As another preferred implementation, in order to ensure the safe conduct of the test, the entire workbench 1 can be placed inside a cabinet, and the support inside the cabinet can be properly set up to ensure the normal operation of each component.

[0047] See Figure 5 , Figure 6 An ablation shield 202 can be installed in the ablation zone 2. A limiting guide groove 203 is opened on the side wall of the ablation shield 202. A guide rod is provided in the limiting guide groove 203. A fixed seat is slidably connected to the guide rod. The ablation gun 201 is installed on the fixed seat. The tail end of the ablation gun 201 is also connected to a position adjustment mechanism. The position adjustment mechanism includes a fourth lead screw guide module 204 and an adjustment base 208. The adjustment base 208 is slidably set on the fourth lead screw guide module 204. The fourth lead screw guide module 204 is also driven by a servo motor. An adjustment plate 209 is fixedly connected to the adjustment base 208. The adjustment plate 209 is fixedly connected to the ablation gun 201.

[0048] The ablation gun 201 can move within the limiting guide groove 203 via a guide rod. The limiting guide groove 203 acts as a frame restricting the movement of the ablation gun 201. A retractable accordion cover can be installed on it to prevent dust leakage from the ablation zone 2. A dust cover can also be installed on the mounting base to protect the ablation gun 201. A thermal imaging temperature sensor 207 can also be installed on the side wall of the ablation protective cover 202. Since impurities may enter through the pores of the ablation gun 201 during the ablation process, potentially causing flameout, a flame detection unit is added for overall safety. The thermal imaging temperature sensor 207 is positioned above the limiting guide groove 203.

[0049] As a further preferred option, see Figure 5 , Figure 7 (The outer protective cover of the rotary table 406 is not shown). The ablation protective cover 202 is provided with an ablation station hole 205 on one side wall relative to the limiting guide groove 203. The bottom of the ablation rotary fixture 3 is also provided with a fixture feeding device. The fixture feeding device drives the ablation rotary fixture 3 to move so that the sample assembly station 303 can enter and exit the ablation station hole 205. The fixture feeding device includes a base frame 305. The bottom surface of the base frame 305 is connected to a fifth lead screw guide rail module 306 (servo motor driven). The lead screw of the fifth lead screw guide rail module 306 is fitted with a feeding seat 307. The feeding seat 307 is connected to the bottom of the rotary table 302 through a pad 308.

[0050] This setup further prevents the leakage of ablation dust and ensures that the spacing between the ablation gun 201 and the sample assembly station 303 is appropriate, which is beneficial for the ablation test of the sample.

[0051] See Figure 5 A heat flux density calibration unit 206 is also provided on one side wall of the ablation protective cover 202 relative to the limiting guide groove 203. The heat flux density calibration unit 206 is located next to the ablation station hole 205. Before ablation, the front end of the ablation gun 201 is aligned with the heat flux density calibration unit 206 through the position adjustment mechanism, ignited, and calibrated by the heat flux density calibration unit 206. After meeting the specified value, the subsequent ablation test is carried out, ensuring the accuracy of the test.

[0052] The sample assembly fixture 9 is sufficient to ensure the completion of sample assembly, and existing technologies such as robotic arms can be used. For the overall instrument design, in a specific embodiment, the sample assembly fixture 9 and the sample ejection device can adopt the following structures:

[0053] See Figure 8(The outer protective cover of the platform is not shown). The sample ejection device includes a pressing seat 311 and a pressing cylinder 313. A guide rail groove 310 is provided on the bottom surface of the platform 309. The pressing seat 311 is slidably mounted on the guide rail groove 310. One side of the pressing seat 311 is connected to the pressing cylinder 313 through a connecting block 312. A pressing rod 314 is provided on the side of the pressing seat 311 near the sample assembly station 303. The pressing cylinder 313 drives the pressing seat 311 to slide, so that the pressing rod 314 ejects the sample from the sample assembly station 303. Since there are sample assembly stations 303 on both sides of the rotating ablation fixture, there are also two sets of sample ejection devices, which act on the adjacent sample assembly stations 303 respectively.

[0054] See Figure 9 (The outer protective cover of the mounting base is not shown). The sample assembly fixture 9 includes a mounting base 901, a lifting slide cylinder 902, and an ejection slide cylinder 903. The mounting base 901 is mounted on the worktable 1. The lifting slide cylinder 902 is located at the bottom of the mounting base 901, and the ejection slide cylinder 903 is located at the top of the mounting base 901. An ejection rod 904 is also connected to the side of the ejection slide cylinder 903 near the ablation rotating fixture 3. The lifting slide cylinder 902 can drive the ejection slide cylinder 903 to rise, so that the ejection rod 904 is aligned with the sample assembly station 303. The ejection slide cylinder 903 drives the ejection rod 904 to complete the sample assembly.

[0055] As a further improvement, gas is generated during sample ablation, requiring treatment of the ablation waste gas. An exhaust duct system 13 can be installed at the upper end of the ablation protective cover 202. The exhaust duct system 13 includes a centrifugal fan, connecting ducts, and an exhaust pipe. The centrifugal fan is installed at the upper end of the ablation protective cover 202. The connecting duct is connected to the ablation protective cover 202 and the centrifugal fan. An interface is provided on the side of the connecting duct, and the exhaust pipe is connected to the interface. The centrifugal fan and connecting ducts are used to draw out the waste gas inside the ablation protective cover 202, which is then discharged through the exhaust pipe.

[0056] As a further improvement, the gas supply pipeline system 14 includes an oxygen supply pipeline, an acetylene supply pipeline, a flow controller, and a pressure controller. The flow controller and pressure controller are installed on the oxygen supply pipeline and the acetylene supply pipeline, both of which are connected to the ablation gun 201. The tail end of the ablation gun 201 is connected to the oxygen supply pipeline and the acetylene supply pipeline, respectively. The flow controller (Seven Star CS200-A) and the pressure controller (Seven Star PC100) ensure a stable supply of oxygen and acetylene and can also be used to adjust the ablation heat flux density to ensure the smooth progress of the ablation process.

[0057] As a further improvement, a water-cooled circulating pump 15 and a water circuit monitoring unit 16 are connected by pipes under the workbench 1. The water circuit monitoring unit 16 is connected to the ablation gun 201 by pipes. The ablation gun 201 is designed according to the national military standard, with an internal water bath cooling channel. The water-cooled circulating pump 15 and the water circuit monitoring unit 16 are installed to prevent the temperature inside the ablation gun 201 from becoming too high.

[0058] As a further improvement, to achieve fully automated control of the oxyacetylene ablation instrument, a control module is also provided. This control module is electrically connected to the thickness measurement mechanism, sample transfer mechanism 4, ablation gun 201, ablation rotating fixture 3, sample assembly fixture 9, gas supply pipeline system 14, exhaust pipeline system 13, and water monitoring unit 16. The control module is a PLC control unit. This instrument possesses fully automated process functions including automatic feeding, pre / post-ablation sample thickness measurement, ignition, ablation, water bath circulation cooling, ablation rate calculation, and unloading and stacking, realizing the fully automated ablation test function of the instrument.

[0059] Specifically, the overall instrument control system consists of a Siemens S7-1500 series PLC and a host computer. The PLC supports multiple communication protocols such as OPC UA, PROFINET, PROFIBUS, Modbus TCP / IP, and S7-Protocol, facilitating integration with other systems. Simultaneously, the host computer collects and archives relevant data from the PLC (stored in a SQL Server 2014 database) and provides an external database interface for integration with other production management software (such as MES systems).

[0060] For the most preferred embodiment, see Figure 10 , Figure 11 The components of the instrument are installed in a cabinet 11. The cabinet 11 can be equipped with a cabinet door, and an observation window can be installed on the cabinet door to facilitate the monitoring of the working status of each mechanism and component inside the cabinet. The four corners at the bottom of the cabinet can also be equipped with casters for easy movement. The specific layout inside the cabinet 11 is shown in the figure (some support plates, wiring and pipes are not shown).

[0061] The instrument integrates a measurement and control system, a feeding control system, an ablation control system, a safety monitoring system, a flow monitoring system, a gas pressure control system, a data storage system, and a data upload system. The overall system is controlled by a Siemens PLC, with each unit's independent program subsystems connected in series for integrated control. This ensures that modules do not interfere with each other and are mutually self-locking, facilitating future maintenance and upgrades. All PLC modules communicate with the system via bus communication. For example, Prifinet I / O communication is used with the solenoid valve island and thickness measurement system; Profinet PN communication is used with the servo controller; Modbus RTU communication is used with the flow controller; and S7-Protocol communication is used with the host computer.

[0062] Simultaneously, a valve island assembly (JSY3000 series) can be installed within the instrument. This assembly can be mounted on the distribution board 17. The valve island combines multiple individual valves through a central voltage and compressed air supply system, thus saving on separate piping and plug-in connectors and reducing wiring work. Furthermore, the valve island integrates electrical inputs and outputs, allowing small control tasks to be handled directly on-site without the need for a control system. It also serves multiple purposes in pneumatic systems, primarily including reducing installation workload, lowering costs, simplifying commissioning and maintenance, and improving equipment utilization.

[0063] In summary, the equipment can adopt an automated control system, which can achieve precise gas pressure and flow control, automatic feeding, automatic thickness measurement, and data acquisition and storage functions.

[0064] The testing procedure for this instrument is as follows:

[0065] Check and turn on the gas, water and electrical circuits. Perform a pre-ablation heat flux density test on the ablation gun. Once it is suitable, set it aside for use.

[0066] The sample transfer mechanism picks up the sample and places it on the thickness measuring stage to measure the original thickness.

[0067] The sample transfer mechanism picks up the thickness measurement sample and places it at sample assembly station No. 1.

[0068] The ablation rotary fixture rotates 180° to enter the ablation position;

[0069] The ablation gun ablates the sample, and the ablation time can be adjusted arbitrarily according to the test requirements.

[0070] The sample transfer mechanism picks up the thickness measurement sample and places it at sample assembly station No. 2.

[0071] After ablation is completed, the ablation fixture is rotated -180°, and the sample transfer mechanism places the ablated sample from the No. 1 sample assembly station onto the thickness measuring platform to measure the thickness of the ablated sample.

[0072] The ablation gun ablates the sample at the No. 2 sample assembly station.

[0073] The process is repeated until all 50 samples on the tray have been ablated, at which point the ablation program automatically stops.

[0074] After the ablation program is stopped, the specimen tray can be replaced, and the ablation program can be restarted for ablation. If the experiment is completed, turn off the ablation gun, export the data, and then turn off the power supply, water valves, and air valves of the equipment.

[0075] The oxyacetylene ablation apparatus of this invention can complete continuous ablation tests on multiple sets of samples. The flow coordination between the sample assembly fixture, the ablation rotating fixture, the thickness measurement mechanism, and the sample transfer mechanism is reasonably designed, and the sample transfer operation is convenient. At the same time, the design of the ablation rotating fixture greatly improves the testing efficiency of the samples. The instrument as a whole can adopt a fully automated process control, automatically completing processes such as feeding, thickness measurement of samples before / after ablation, ignition, ablation, water bath circulation cooling, ablation rate calculation, and unloading and stacking, realizing the fully automated ablation test function of the instrument.

[0076] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An oxyacetylene ablation apparatus, characterized in that, The device includes a workbench, on which are arranged an ablation zone, a sample tray, a sample assembly fixture, an ablation rotating fixture, and a thickness measuring mechanism. An ablation gun is positioned within the ablation zone, with its front end facing the ablation rotating fixture, and its rear end connected to a gas supply pipeline system. The sample tray is located on one side of the ablation zone, and the ablation rotating fixture is positioned between the sample tray and the ablation zone. The sample assembly fixture is positioned between the ablation rotating fixture and the sample tray to assemble the sample onto the ablation rotating fixture. Above the sample tray is a sample transfer mechanism for transferring the sample from the sample tray between the sample tray, the thickness measuring mechanism, and the ablation rotating fixture. The ablation rotary fixture includes a sample assembly table and a rotary seat. The sample assembly table includes a base with sample assembly stations at both ends. The base is equipped with a sample ejection device that ejects the sample from the sample assembly station. The rotary seat is located at the bottom of the worktable and is connected to the base through a connecting column passing through the worktable. The thickness measuring mechanism includes a thickness gauge and a thickness measuring platform. The thickness gauge is located above the thickness measuring platform. A suction and flipping mechanism is also provided next to the thickness measuring platform. The suction and flipping mechanism includes a fixed platform and a flipping platform. The flipping platform is rotatably connected to the fixed platform. A clamp and a vacuum suction device are provided inside the flipping platform.

2. The oxyacetylene ablation apparatus as described in claim 1, characterized in that: A support frame connected to the worktable is provided above the sample tray. The sample transfer mechanism is located on the support frame and includes a guide rail bracket assembly. The guide rail bracket assembly includes a first lead screw guide rail module and a second lead screw guide rail module arranged in parallel. A third lead screw guide rail module is connected between the first lead screw guide rail module and the second lead screw guide rail module. A first slide block is provided on both sides of the lower end of the third lead screw guide rail module. The third lead screw guide rail module is slidably connected to the first lead screw guide rail module and the second lead screw guide rail module through the first slide block. A second slide block is provided on the side of the third lead screw guide rail module. A gripping assembly is provided on the second slide block. The gripping assembly includes a rotary table connected to the lower end of the second slide block and a gripping seat connected to the rotary table. A first slide block and a second slide block are respectively provided on both sides inside the gripping seat. A first gripper is provided on the first slide block and a second gripper is provided on the second slide block.

3. The oxyacetylene ablation apparatus as described in claim 1, characterized in that: An ablation protective cover is provided within the ablation zone. A limiting guide groove is formed on the side wall of the ablation protective cover. A guide rod is provided within the limiting guide groove. A fixed seat is slidably connected to the guide rod. The ablation gun is mounted on the fixed seat. A position adjustment mechanism is also connected to the tail end of the ablation gun. The position adjustment mechanism includes a fourth lead screw guide module and an adjustment base. The adjustment base is slidably disposed on the fourth lead screw guide module. An adjustment plate is fixedly connected to the adjustment base. The adjustment plate is fixedly connected to the ablation gun.

4. The oxyacetylene ablation apparatus as described in claim 3, characterized in that: The ablation protective cover has an ablation station hole on one side wall relative to the limiting guide groove. The bottom of the ablation rotary fixture is also provided with a fixture feeding device. The fixture feeding device drives the ablation rotary fixture to move so that the sample assembler can move in and out of the ablation station hole. The fixture feeding device includes a base frame. The bottom surface of the base frame is connected to a fifth lead screw guide rail module. A feeding seat is sleeved on the lead screw of the fifth lead screw guide rail module. The feeding seat is connected to the bottom of the rotary seat through a pad.

5. The oxyacetylene ablation apparatus as described in claim 4, characterized in that: A heat flux density calibration unit is also provided on one side wall of the ablation protective cover relative to the limiting guide groove, and the heat flux density calibration unit is located next to the ablation station hole.

6. The oxyacetylene ablation apparatus as described in any one of claims 1 to 4, characterized in that: The sample ejection device includes a top pressure seat and a top pressure cylinder. The bottom surface of the base is provided with a guide rail groove. The top pressure seat is slidably disposed on the guide rail groove. One side of the top pressure seat is connected to the top pressure cylinder through a connecting block. A top pressure rod is provided on the side of the top pressure seat near the sample assembly station.

7. The oxyacetylene ablation apparatus as described in any one of claims 1 to 4, characterized in that: The sample assembly fixture includes a mounting base, a lifting slide cylinder, and an ejection slide cylinder. The mounting base is set on the worktable, the lifting slide cylinder is located at the bottom of the mounting base, and the ejection slide cylinder is located at the top of the mounting base. An ejection rod is also connected to the side of the ejection slide cylinder near the ablation rotating fixture.

8. The oxyacetylene ablation apparatus as described in claim 3, characterized in that: The upper end of the ablation protection cover is connected to an exhaust duct system, which includes a centrifugal fan, a connecting duct, and an exhaust duct. The centrifugal fan is installed on the upper end of the ablation protection cover. The connecting duct is connected to the ablation protection cover and the centrifugal fan. An interface is provided on the side of the connecting duct, and the exhaust duct is connected to the interface.

9. The oxyacetylene ablation apparatus as described in claim 1, characterized in that: The gas supply pipeline system includes an oxygen supply pipeline, an acetylene supply pipeline, a flow controller, and a pressure controller. The flow controller and the pressure controller are installed on the oxygen supply pipeline and the acetylene supply pipeline, and both the oxygen supply pipeline and the acetylene supply pipeline are connected to the ablation gun.

10. The oxyacetylene ablation apparatus as described in claim 1, characterized in that: The workbench is equipped with a water-cooled circulating pump and a water circuit monitoring unit connected by pipes. The water circuit monitoring unit is connected to the ablation gun by pipes.

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