Processing method of continuous fiber reinforced thermoplastic honeycomb core composite board

Abstract

The invention discloses a processing method of a continuous fiber reinforced thermoplastic honeycomb core composite board. The processing method comprises the following steps: (1) manufacturing a plastic honeycomb core; (2) the two continuous fiber reinforced thermoplastic skins and the two adhesive film rolls are installed on a continuous fiber reinforced thermoplastic skin unwinding mechanism and an adhesive film roll unwinding mechanism correspondingly for unwinding; (3) treating the surface of the continuous fiber reinforced thermoplastic skin for multiple times by using a plasma processor; (4) the plastic honeycomb core is conveyed to a conveying roller of a core plate conveying frame to be conveyed forwards; the thickness measuring device can be used for integrally measuring the thickness of the composite board subjected to composite processing on line, the detection accuracy is ensured, the part which does not meet the requirement can be marked, the subsequent reprocessing on the unqualified board is facilitated, and the processing effect is good.

Description

Technical Field

[0001] This invention relates to the field of honeycomb core panel processing equipment technology, and more specifically to a method for processing continuous fiber reinforced thermoplastic honeycomb core composite panels. Background Technology

[0002] Honeycomb core material is a low-density honeycomb-shaped material used as the core material in sandwich structures. It can be manufactured using over 500 different materials, with the main honeycomb core material materials including aluminum alloys, resin-impregnated modified glass fibers, aramid fiber paper, kraft paper, graphite fibers, and Kevlar fibers, among others. For example, a method for preparing a polypropylene honeycomb core composite aluminum plate, as described in Chinese patent application number 202211526949.6, involves first combining an aluminum plate and a polypropylene honeycomb core, followed by cutting after the composite process. During the composite process, an alignment mechanism automatically aligns the aluminum plate and the polypropylene honeycomb core, eliminating the need for manual handling and alignment of the raw materials. This reduces labor intensity and increases work efficiency. Furthermore, ultrasonic cleaning and plasma treatment of the plate enhance the adhesion between the polypropylene honeycomb core and the aluminum plate, making the polypropylene honeycomb core composite aluminum plate more durable.

[0003] However, during processing, the thickness of the boards was not measured, making it impossible to know whether the laminated boards met the requirements. Manual inspection was the only option later. However, due to the width of the boards, the center of each board could not be properly inspected, affecting the accuracy of the inspection. In addition, the plastic core boards were also manually fed during processing, which involved a large amount of manual labor and the results were not ideal. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a method for processing continuous fiber reinforced thermoplastic honeycomb core composite panels. This method allows for online thickness measurement of the entire composite panel after processing, ensuring accurate detection. It also allows for marking of any non-compliant parts, facilitating subsequent reprocessing of the defective panels. The method yields excellent processing results.

[0005] The solution of the present invention to the aforementioned technical problem is: A method for processing a continuous fiber reinforced thermoplastic honeycomb core composite panel includes the following steps: (1) Making plastic honeycomb cores; (2) Install two continuous fiber reinforced thermoplastic skin rolls and two film rolls onto the continuous fiber reinforced thermoplastic skin unwinding mechanism and the film roll unwinding mechanism respectively for unwinding; (3) The surface of the continuous fiber reinforced thermoplastic skin is treated multiple times using a plasma processor to further clean and treat the continuous fiber reinforced thermoplastic skin. (4) The plastic honeycomb core is conveyed forward onto the conveyor rollers of the core board conveyor frame; (5) When the plastic honeycomb core is conveyed forward, it is placed between the upper and lower films. The plastic honeycomb core, continuous fiber reinforced thermoplastic skin, and film are aligned by the alignment mechanism. After alignment, the continuous fiber reinforced thermoplastic skin, film and plastic honeycomb core are gathered and stacked, and their positions from bottom to top are continuous fiber reinforced thermoplastic skin, film, plastic honeycomb core, film and continuous fiber reinforced thermoplastic skin. The composite board formed by stacking together is then sent to the heating zone of the composite machine for heating and composite by the conveyor belt, and then shaped by the cooling zone.

[0006] (6) After the composite plate is removed from the cooling zone, its thickness is measured online using a thickness measuring device; (7) The composite machine is pulled out by the traction unit; (8) The composite board that meets the requirements after thickness measurement is sent to the cutting machine (8) for length cutting, and finally the finished continuous fiber reinforced honeycomb core composite board is obtained.

[0007] After step (6), the composite board with insufficient thickness is marked by a marking device.

[0008] The fabrication of the plastic honeycomb core in step (1) includes the following steps: (1) Polypropylene resin, antioxidant, light stabilizer and ultraviolet absorber are thoroughly mixed by a mixer to obtain a mixed resin; (2) The mixed resin is melt-extruded through an extruder into a vacuum setting box for setting; (3) Produce plastic round tubes of suitable specifications by adjusting the extruder parameters; (4) Cut the plastic round pipe into multiple plastic round pipe segments of the same length using a cutting device; (5) Arrange the plastic round pipe segments neatly on the pipe rack and gather them into round pipe honeycomb groups of appropriate size; (6) The round tube honeycomb assembly is sent into the oven for baking and shaping. After baking and shaping, the round tube honeycomb core is obtained. (7) The round tube honeycomb core is cut into multiple sheets of the same thickness by a slicer to obtain the plastic honeycomb core.

[0009] The outstanding effects of this invention are: It can perform online thickness measurement of the entire composite board after composite processing, ensuring accurate detection, and can mark any parts that do not meet the requirements, making it convenient for subsequent reprocessing of the defective boards, with good processing effect.

[0010] Secondly, it can adsorb the powder of the round tube honeycomb core block and position the entire round tube honeycomb core block when slicing, which facilitates slicing and ensures the slicing effect. It can press the top of the stacked round tube honeycomb group together, so that the round tube honeycomb group is compressed precisely when it is bonded and fixed in the oven, thus improving the processing quality of the plastic honeycomb core.

[0011] It can automatically feed plastic honeycomb cores without manual loading and unloading, greatly improving processing efficiency and reducing manual labor.

[0012] Its continuous fiber-reinforced thermoplastic skin has increased surface tension after plasma treatment. Attached Figure Description

[0013] Figure 1 This is a simplified schematic diagram of the present invention; Figure 2 yes Figure 1 A magnified view of a portion of the image; Figure 3 yes Figure 1 A magnified view of another part; Figure 4 This is a partial structural schematic diagram of the first thickness measuring frame of the present invention; Figure 5 This is a partial structural schematic diagram of the second thickness measuring frame of the present invention; Figure 6 This is a partial structural diagram of the pipe rack; Figure 7 This is a partial sectional view of the pipe rack; Figure 8 yes Figure 7 A magnified view of a portion of the image; Figure 9 This is a partial structural diagram of the placement device; Figure 10 yes Figure 9 A magnified view of a portion of the image; Figure 11 This is a partial structural diagram of a slicer; Figure 12 yes Figure 11 A magnified view of a portion of the image. Detailed Implementation

[0014] For example, see below. Figures 1 to 12 As shown, a method for processing a continuous fiber reinforced thermoplastic honeycomb core composite panel includes the following steps: (1) Making plastic honeycomb core 1; its making includes the following steps: 1) Polypropylene resin, antioxidant, light stabilizer and ultraviolet absorber are thoroughly mixed in a mixer to obtain a mixed resin; other materials can also be used to make the mixed resin, which will not be described in detail here; 2) The mixed resin is melt-extruded through an extruder into a vacuum setting box for setting; 3) Produce plastic round tubes of suitable specifications by adjusting the extruder parameters; 4) Cut the plastic tube into multiple segments of the same length using a cutting device; 5) Arrange the plastic round pipe segments neatly on the pipe rack 40 and gather them into round pipe honeycomb groups of appropriate size; The material discharge rack 40 includes a horizontal bottom frame 41. The left and right front and rear parts of the bottom surface of the horizontal bottom frame 41 are fixed with casters equipped with brakes. The left and right sides of the top surface of the horizontal bottom frame 41 are fixed with side support frames 42. Vertical guide grooves 43 are formed in the middle of both side support frames 42. The top surfaces of the top beams of the two side support frames 42 are fixed with the same left-right extending upper transverse beam 44. External insertion fittings are fixed on the outer walls of the front and rear side support rods of the two side support frames 42. Position block 45, the middle of the external insertion limiting block 45 is formed with a vertical limiting slot, the inner wall of the vertical limiting slot extends out of the external insertion limiting block 45 and faces the side wall of the middle of the material rack 40, the side baffle plate 46 is inserted into the two vertical limiting slots on the same side, multiple plastic round tube segments are stacked between the two side support frames 46 and above the top surface of the horizontal bottom frame 41, and the round tube honeycomb group is fixed by adhesive. The front and rear ends of the round tube honeycomb group are close to or in close contact with the opposite walls of the two side baffle plates 46.

[0015] The top surface of the circular tube honeycomb assembly is pressed against an upper cover plate 47. Limiting sleeves 471 are fixed in the middle of the top surface of the left and right parts of the upper cover plate 47. A horizontal limiting plate 472 is inserted into the limiting sleeve 471. The outer end of the horizontal limiting plate 472 extends out of the limiting sleeve 471 and is inserted into the corresponding vertical limiting slot 43. The front and rear sides of the outer end of the horizontal limiting plate 472 are close to the inner side of the corresponding vertical limiting slot 43. A limiting block 473 is fixed on the top surface of the inner end of the horizontal limiting plate 472. A permanent magnet block 474 is fixed on the corresponding end face of the limiting block 473, which presses against the corresponding end face of the corresponding limiting sleeve 471 and is magnetically fixed.

[0016] Two upper transverse beams 44 are fixed at the front and rear of the top surface of the two side support frames 46. Vertical through holes are formed in the middle of the left and right parts of the upper transverse beams 44. Guide rods 441 are inserted into the corresponding vertical through holes. The upper part of the guide rods 441 extends out of the top of the vertical through holes, and the bottom of the guide rods 441 extends out of the bottom of the vertical through holes. The screw part formed in the middle of the bottom end face is screwed into the screw hole formed on the top surface of the upper cover plate 47. The compression spring 48 is inserted into the lower part of the corresponding guide rod 441. The top of the compression spring 48 is applied to the bottom surface of the corresponding upper transverse beam 44, and the bottom end is applied to the top surface of the upper cover plate 47.

[0017] The upper and lower parts of the outer side wall of the external insertion limiting block 45 are formed with through holes. The adjusting stud 451 is inserted into the corresponding through hole, and its outer end extends out of the corresponding through hole and is screwed with a locking nut 452. The corresponding end face of the locking nut 452 presses against the outer side wall of the external insertion limiting block 45. The inner ends of the two corresponding adjusting studs 451 extend out of the inner end of the through hole and are fixed on the same pressing plate 453. The pressing plate 453 presses against the outer side wall of the corresponding side baffle plate 46. A compression spring is inserted into the adjusting stud 451. One end of the compression spring is applied to the outer side wall of the pressing plate 453, and the other end is applied to the inner side wall of the corresponding vertical limiting slot.

[0018] When laying the plastic round tubes, first insert the side baffles 46 into the two vertical limiting slots at the rear of the material rack 40, and rotate the locking nut 452 at the rear so that the clamping plate 453 presses against the outer wall of the corresponding side baffle 46, making it firmly clamped. When laying the plastic round tubes, the rear end can rest against the corresponding wall of the rear side baffle 46 to ensure that the end faces of all plastic round tubes are aligned. During laying, adhesive needs to be applied to the plastic round tubes to ensure that all plastic round tubes are bonded and fixed. After laying, it forms a round tube honeycomb group. Then, insert another side baffle 46 into the corresponding vertical limiting slot, and then rotate the locking nut. The mother plate 452 is positioned between the two side baffles 46 to locate the round tube honeycomb assembly. Then, the upper cover plate 47 is pressed against the top surface of the laid round tube honeycomb assembly. The corresponding two horizontal limiting plates 472 are moved outward so that the permanent magnet block 474 is pressed against the corresponding end face of the corresponding limiting sleeve 471 and magnetically fixed. The outer end of the horizontal limiting plate 472 extends out of the limiting sleeve 471 and is inserted into the corresponding vertical limiting slot 43 to achieve limiting. Then, the guide rod 441 is inserted into the corresponding vertical through hole, and its bottom end is inserted into the compression spring 48. The bottom end is screwed onto the upper cover plate 47 so that the upper cover plate 47 is pressed by the compression spring 48 to complete the installation.

[0019] This structure ensures that during the subsequent baking process, the upper cover plate 47 continuously applies pressure to the lower circular tube honeycomb assembly, guaranteeing that the lower circular tube honeycomb assembly is tightly compressed during baking. Furthermore, the side baffles 46 on both sides ensure that the circular tube honeycomb assembly does not deform to the front and back sides during drying, thereby increasing its honeycomb density and improving its product quality.

[0020] 6) The round tube honeycomb assembly is placed into an oven for baking and shaping. After baking and shaping, the round tube honeycomb core is obtained. Specifically, the material rack 40 with the round tube honeycomb group installed is directly pushed into the baking oven for shaping, and then removed after completion.

[0021] 7) The round tube honeycomb core is cut into multiple sheets of the same thickness by the slicer 50 to obtain the plastic honeycomb core 1.

[0022] The slicer 50 includes a lower horizontal support frame 51. Multiple legs are fixed to the bottom surfaces of the front and rear beams of the lower horizontal support frame 51, with the bottoms of the legs fixed to the ground. Left and right extending guide rails are fixed to the top surfaces of the front and rear beams of the lower horizontal support frame 51. A horizontal feeding plate 52 is positioned above the two guide rails. Multiple guide sliders are fixed to the front and rear parts of the bottom surface of the horizontal feeding plate. The guide rails are inserted into the grooves of the corresponding guide sliders. An upper placement housing 53 is fixed to the top surface of the horizontal feeding plate 52. A through groove is formed in the middle of the top plate of the upper placement housing 53. A filter screen 54 is fixed to the top surface of the top plate of the upper placement housing 53 and covers the through groove. The round tube honeycomb core lumps to be sliced ​​are placed in the middle of the top surface of the filter screen 54. The horizontal feeding plate 52 and the upper placement housing 53 are sealed together by a clamping sealing gasket.

[0023] The bottom center of the left and right side beams of the lower horizontal support frame 51 is fixed with end plates. The two ends of the left and right extending movable screws are movably connected to the two end plates through bearings. A transverse moving motor 55 is fixed on the outer wall of one of the end plates. The output shaft of the transverse moving motor 55 is a spline shaft, which is inserted into the spline hole at one end of the corresponding moving screw and drives the moving screw to rotate. The main moving block 551 is screwed onto the moving screw. The top surface of the main moving block 551 is fixed on the bottom center of the horizontal feeding plate 52. The bottom surface of the horizontal feeding plate 52 has multiple threaded through holes formed in the middle, which are connected to the inner cavity of the upper housing 53. The tops of the two suction connecting pipes 56 are threaded into the corresponding threaded through holes and are connected to the inner cavity of the upper housing 53. The external threads on the tops of the pipes are wrapped with PTFE tape and threaded into the corresponding threaded through holes to achieve a seal. The bottom connecting pipes of the two suction connecting pipes 56 are inserted into the corresponding through holes of the top plate of the lower movable filter housing 57 and are connected to the inner cavity of the movable filter housing 57. A sealing ring is nested in the annular groove formed on the inner side wall of the through hole. The inner side wall of the sealing ring is pressed against the outer side wall of the bottom connecting pipe. Multiple push wheels are fixed on the bottom surface of the bottom plate of the movable filter housing 57. The bottom ends of the push wheels are pressed against the ground. A drain head is connected to one side of the bottom plate of the movable filter housing 57. A plug is threaded onto the outer end of the drain head. The top plate of the movable filter housing 57 has an upper through hole formed in the middle. An upper air extraction connecting housing 58 is fixed to the middle of the top surface of the top plate of the movable filter housing 57. The upper air extraction connecting housing 58 and the top surface of the top plate of the movable filter housing 57 are sealed together by sealant or gasket. The upper suction connection housing 58 is connected to the upper through hole. The top of the upper suction connection housing 58 is connected to the upper connector. The upper connector is connected to the suction pipe of the exhaust gas treatment device (which is a conventional structure and will not be described in detail here). Side baffles are fixed on the bottom surface of the top plate of the movable filter housing 57 located on both sides of the upper through hole.

[0024] The sealing structures, such as the sealing gaskets, in this embodiment are not shown in the accompanying drawings.

[0025] Vertical support frames are fixed to the ground at the front and rear of the middle section of the lower horizontal support frame 51. The tops of the two vertical support frames are fixed to the same connecting plate. Lower connecting plates are fixed to the lower parts of the opposing walls of the two vertical support frames. The bottoms of the two vertical lifting screws are movably connected to the corresponding lower connecting plates via bearings. The tops of the vertical lifting screws are movably connected to the connecting plates via bearings. Two lifting adjustment servo motors are fixed to the top surface of the connecting plates. The output shaft of each lifting adjustment servo motor is a splined shaft, which is inserted into the opposite... The corresponding vertical lifting screw is inserted into the spline hole at the top and drives the vertical lifting screw to rotate, which in turn drives the corresponding vertical lifting screw to rotate. A side lifting block is screwed onto each of the two vertical lifting screws. A vertical guide rod is fixed between the connecting plate and the corresponding lower connecting plate. The vertical guide rod is inserted into the guide block fixed on the side lifting block. A transverse sawing device is installed between the right sides of the two side lifting blocks. Its structure is the same as the sawing structure of the existing gantry horizontal band saw, which will not be described in detail here. Its transverse saw blade is facing the round tube honeycomb core.

[0026] Among them, an upper connecting beam extending forward and backward is fixed on the upper right side wall of the two vertical support frames. A main laser rangefinder 59 is fixed in the middle of the bottom surface of the upper connecting beam, with its sensing end facing the top surface of the circular tube honeycomb core below.

[0027] When this structure is in operation, the cylindrical honeycomb core lumps to be sliced ​​are placed on the top surface of the center of the filter plate 54. When air is drawn in through the suction pipe of the exhaust gas treatment device, the inner cavity of the upper housing 53 is created with negative pressure, which adsorbs and fixes the cylindrical honeycomb core lumps. Then, the cylindrical honeycomb core lumps are moved to the left by the operation of the transverse moving motor 55. The moving speed is very slow, about 0.6 m / min in this embodiment. When it is sensed by the main laser rangefinder 59 and the distance is set, the sensing signal is transmitted to the control host (the control host is a conventional structure, and all electrical components in this embodiment are connected to the corresponding...) via electrical connection wires. The control host is electrically connected and controls the operation (details omitted here). The control host controls the operation of the two corresponding lifting and adjusting servo motors, causing the saw blade of the transverse sawing device to descend to a position lower than the top surface of the round tube honeycomb core block by the thickness of the plastic honeycomb core 1 to be cut. At this time, the round tube honeycomb core block continues to move to the left, and then it is cut. The debris generated during the cutting is sucked into the upper placement housing 53 through the mesh of the filter plate 54, and then into the moving filter housing 57. After being blocked by the two side baffles, it is sucked into the exhaust gas treatment device for direct treatment, which is very convenient. After cutting one piece, the saw blade is raised to its original position, and then the transverse moving motor 55 moves the round tube honeycomb core block to the right and back to its original position. Then, as before, it moves to the left. At this time, after being sensed by the main laser rangefinder 59, the saw blade descends to a position lower than the top surface of the round tube honeycomb core block by the thickness of the two plastic honeycomb cores 1 to be cut, and then cuts. This process is repeated to connect and slice the pieces.

[0028] (2) Install two continuous fiber reinforced thermoplastic skin rolls and two film rolls onto the continuous fiber reinforced thermoplastic skin unwinding mechanism 4 and the film roll unwinding mechanism 5 respectively for unwinding (the continuous fiber reinforced thermoplastic skin unwinding mechanism 4 and the film roll unwinding mechanism 5 are both conventional structures, and will not be described in detail here). (3) The material feeding transition device 20 is fixed on the left side of the core board conveying frame 60 in front of the continuous fiber reinforced thermoplastic skin unwinding mechanism 4, and automatically conveys the plastic honeycomb core 1 to the conveying roller 11 of the core board conveying frame 60 for forward conveying. The core board conveying frame 60 is fixed on the ground in front of the continuous fiber reinforced thermoplastic skin unwinding mechanism 4. The core board conveying frame 60 includes connecting support columns at the front and rear, left and right. Two corresponding side connecting plates are fixed between the corresponding two connecting support columns. The upper and lower parts between the two corresponding left and right connecting support columns are movably connected to guide rollers through bearings, which can be used to guide the conveyed continuous fiber reinforced thermoplastic skin. Multiple conveying guide rollers arranged in a front-to-back pattern are provided between the two side connecting plates. The left and right sides of the conveying guide rollers are fixed to the two side connecting plates. The conveying guide rollers are electric guide rollers, so that the plastic honeycomb core 1 placed on them can be conveyed forward. At the same time, multiple vertical guide rollers are movably connected to the inner side wall of the right side connecting plate through bearing seats, so that the right side wall of the plastic honeycomb core 1 is pressed against the vertical guide rollers, which can achieve a guiding function. On the inner side wall of the rear part of the right side connecting plate, a fixing plate is fixed. A pusher cylinder 70 is fixed on the rear wall surface of the fixing plate. The front end of the pusher cylinder 70 extends out of the front wall surface of the fixing plate and is fixed to a pusher plate. Multiple rearward extending guide rods are fixed on the rear wall surface of the pusher plate. The guide rods are inserted into the guide through holes of the fixing plate. The front wall surface of the pusher plate faces the plastic honeycomb core 1 conveyed above all the electric guide rollers.

[0029] The intermediate feeding transition device 20 in this embodiment includes a bottom trolley frame 21, which is fixed to the ground. Vertical columns 22 are fixed to the front and rear of the top surface of the top plate of the bottom trolley frame 21 on both sides. The upper fixing plate 23 is fixed to the top surface of the four vertical columns 22. A drive shaft 24 is installed between the upper and lower parts of the two corresponding vertical columns 22. The front and rear ends of the drive shaft 24 are movably connected to the two corresponding vertical columns 22 through bearings. Synchronous pulleys 241 are fixed to the front and rear of the drive shaft 24. A synchronous belt 242 is tensioned between the two corresponding synchronous pulleys 241. The teeth of the synchronous belt 242 are engaged with the tooth grooves of the synchronous pulleys 241. A main lifting motor (which is a conventional structure and is not shown in the attached figure) is fixed on the outer wall of the corresponding vertical column 22. The output shaft of the main lifting motor is a splined shaft, which is inserted into the splined hole at one end of the corresponding drive shaft 24 and drives the corresponding drive shaft 24 to rotate. A connecting block 243 is fixed on the synchronous belt 242, and the horizontal lifting plate 26 is fixed on the four connecting blocks 243.

[0030] The upper fixed plate 23 has elongated guide grooves 231 extending laterally at both the front and rear of its middle section. Vertical plates are fixed to the left and right sides of the top surface of the upper fixed plate 23 corresponding to the elongated guide grooves 231. A rodless cylinder 260 extending laterally is fixed to the two vertical plates. A moving guide block 261 is fixed to the bottom surface of the bottom moving block of the rodless cylinder 260. The moving guide block 261 is inserted into the corresponding elongated guide groove 231, with its front and rear sidewalls tightly against the inner sidewall of the corresponding elongated guide groove 231. The bottom surface of the moving guide block 261 extends... A horizontal plate 27 extending to the left is fixed to the bottom end of the corresponding elongated guide groove 231. A guide sleeve 271 is fixed to the bottom surface of the left end of the horizontal plate 27. A telescopic column 28 is inserted into the lower part of the guide sleeve 271. The bottom end of the telescopic column 28 extends out of the bottom end of the guide sleeve 271 and is fixed to a bottom pushing block 29. A downwardly extending pressing part 291 is formed on the right end of the bottom surface of the bottom pushing block 29. A buffer spring is inserted into the upper part of the guide sleeve 271. The bottom end of the buffer spring is fixed to the top surface of the telescopic column 28, and its top end is fixed to the bottom surface of the horizontal plate 27.

[0031] Multiple intermediate support rods are fixed to the bottom surface of the front and rear parts of the upper fixed plate 23. The bottom end of the intermediate support rod is fixed to the top surface of the top plate of the bottom trolley frame 21. A horizontal plate is fixed to the upper part of the front intermediate support rod, and a horizontal plate is also fixed to the upper part of the rear intermediate support rod. Multiple infrared transmitters 201 and infrared receivers are fixed to the corresponding horizontal plates at the front and rear, respectively. The infrared transmitters 201 irradiate infrared rays to the receiving end of the infrared receivers (since the infrared receivers correspond to the infrared transmitters 201, their structure and setting are also conventional structures, and the infrared receivers in the attached drawings are omitted and not shown).

[0032] In use, the right side of the intermediate feeding transition device 20 faces the right-side conveyor frame. The conveyor frame (a conventional roller conveyor frame, which will not be described in detail here) is lower than the height of the conveyor guide rollers of the core board conveyor frame 60. Extension plates are fixed to the upper part of the left side wall of the two vertical columns 22 on its left side. A limit plate is fixed between the left side walls of the two extension plates. A proximity switch is fixed at the lower part of the limit plate, corresponding to the position of the conveyor rollers on the conveyor frame. It is operated by the main lifting motor (a servo motor to ensure the accuracy of the synchronous belt 242), causing the horizontal lifting plate 26 to descend. Its left end faces the sensing end of the proximity switch, indicating its movement. Upon reaching the corresponding position, the conveyor frame transports the plastic honeycomb core 1 to the left and moves it onto the horizontal lifting plate 26 (a self-lubricating layer is fixed on the top surface of the horizontal lifting plate 26). Its left end rests against the limiting plate to prevent it from moving out. Infrared receivers and transmitters are located at the front and rear ends of the conveyor frame's discharge port. The infrared transmitter irradiates infrared light onto the corresponding infrared receiver. When the plastic honeycomb core 1 is output to the left, it blocks the infrared transmitter from irradiating infrared light onto the infrared receiver, thus transmitting a sensing signal to the control host. Generally, 5 to 10 seconds after sensing, it indicates that the plastic honeycomb core 1 has been transported onto the horizontal lifting plate 26, and the control host will then control the main control... The lifting motor operates, raising the horizontal lifting plate 26 until the infrared emitter 201 corresponding to the plastic honeycomb core 1 illuminates the infrared receiver, indicating that it has reached the corresponding position. Then, the bottom moving block of the rodless cylinder 260 (the rodless cylinder 260 is connected to the corresponding solenoid valve of the corresponding pneumatic system via a connecting pipe; it is a conventional structure and will not be described in detail here) moves the bottom pushing block 29 to the left, causing the pressing part 291 to press against the right end of the plastic honeycomb core 1, pushing it to the left onto the conveyor guide roller, completing the feeding. Then, the push rod of the pushing cylinder 70 pushes the pushing plate forward, moving the plastic honeycomb core 1 forward. The pusher presses the plastic honeycomb core 1 against the rear end of the plastic honeycomb core 1 being conveyed in front (in this embodiment, the conveying guide roller rotates at a relatively slow speed to ensure that the time interval between the feeding and conveying of the two plastic honeycomb cores 1 is small, so that the subsequent feeding can be pushed by the pusher of the pusher cylinder 70 to press the rear end of the subsequent plastic honeycomb core 1 against the rear end of the previous plastic honeycomb core 1). After the plastic honeycomb core 1 is pushed onto the conveying guide roller, the corresponding infrared light shines on the infrared receiver, indicating that the feeding is over. The bottom moving block of the rod cylinder 26 will then return to its original position. At the same time, the main lifting motor will run, lowering the horizontal lifting plate 26 back to the material picking position, and then receiving the subsequent plastic honeycomb core 1 for feeding again.

[0033] (4) When the continuous fiber reinforced thermoplastic skin is conveyed forward, the surface of the continuous fiber reinforced thermoplastic skin is treated multiple times by the plasma processor 2 to further clean and treat the continuous fiber reinforced thermoplastic skin. At the same time, its surface tension is improved.

[0034] In this embodiment, the continuous fiber reinforced thermoplastic skin does not require ultrasonic cleaning, thus eliminating the need for ultrasonic cleaning equipment.

[0035] (6) When the plastic honeycomb core 1 is conveyed forward, it is positioned between the upper and lower adhesive films. The alignment mechanism 10 aligns the plastic honeycomb core 1, the continuous fiber reinforced thermoplastic skin, and the adhesive film. After alignment, the continuous fiber reinforced thermoplastic skin, the adhesive film, and the plastic honeycomb core 1 are gathered and stacked, with their positions from bottom to top being continuous fiber reinforced thermoplastic skin, adhesive film, plastic honeycomb core 1, adhesive film, and continuous fiber reinforced thermoplastic skin. The composite board formed by stacking together is then sent to the heating zone 6 of the composite machine 3 for heating and composite, and then shaped by the cooling zone 7. The above structure and method are basically the same as those of the existing ones, and will not be described in detail.

[0036] (7) After the composite plate is removed from the cooling zone 7, its thickness is measured online by the thickness measuring device 30. The thickness measuring device 30 includes a first thickness measuring frame 31 and a second thickness measuring frame 32; The first thickness gauge 31 is located behind the second thickness gauge 32; The first thickness measuring frame 31 includes two side support beams 311 on the left and right. The two ends of two connecting beams 312 extending horizontally are fixed to the upper opposite walls of the two side support beams 311. Two transverse rotating screws 313 are provided between the two connecting beams 312. The two ends of the transverse rotating screws 313 are movably connected to the two side support beams 311 through bearings. A moving motor 35 is fixed on the outer wall of one of the side support beams 311. The moving motor 35 drives the two transverse rotating screws 313 to rotate. A moving block 315 is screwed onto the corresponding transverse rotating screw 313. A transverse guide rail is fixed on the opposite wall of the two connecting beams 312. A guide block is fixed on the far wall of the two moving blocks 315. The transverse guide rail is inserted into the guide groove of the corresponding guide block. The two moving blocks 315 are positioned opposite each other on their respective walls, and each is fixed with a laser thickness sensor 33. The laser of the laser thickness sensor 33 is used to measure the thickness of the composite plate being transported between the two moving blocks 315 by irradiating the top and bottom surfaces.

[0037] One end of the transverse rotating screw 313 extends out of the corresponding side support beam 311 and is fixed with a transmission gear 316. A motor base 34 is fixed on the outer side wall of the side support beam 311. The movable motor 35 is fixed on the connecting plate of the motor base 34. The end of the output shaft of the movable motor 35 extends out of the inner end face of the connecting plate of the motor base 34 and is fixed with a drive gear 341. The drive gear 341 meshes with the two transmission gears 316.

[0038] The second thickness measuring frame 32 includes two side connecting plates, and two left and right extending connecting beams are fixed on the upper part between the two side connecting plates. Second laser thickness sensors 36 are fixed on the left, middle and right sides of the opposite walls of the two connecting beams. The upper and lower second laser thickness sensors 36 are vertically aligned.

[0039] The thickness is measured by the laser of the laser thickness sensor 33, which moves back and forth on the first thickness measuring frame 31, irradiating the top and bottom surfaces of the composite plate conveyed between the two moving blocks 315. This achieves mobile detection. Then, the thickness is measured by the fixed second laser thickness sensors 36 on the second thickness measuring frame 32. This double thickness measurement improves the thickness measurement effect and accuracy.

[0040] (8) The composite machine 3 is pulled out by the traction unit 12 (i.e., by the guide traction rollers set at the top and bottom); (9) The composite board that meets the requirements after thickness measurement is sent to the cutting machine 8 for length cutting, and finally the finished continuous fiber reinforced honeycomb core composite board is obtained.

[0041] Steps 8 and 9 are standard procedures and structures, and will not be described in detail here.

[0042] After step 7, the composite panels that do not meet the thickness standard are marked by a marking device.

[0043] A marking connecting plate is fixed to the front top surface of the top plate of the second thickness measuring frame 32. A marking lifting cylinder is fixed to the front top surface of the marking connecting plate. The bottom end of the push rod of the marking lifting cylinder extends out of the bottom surface of the marking connecting plate and is fixed to a first lifting plate. A guide rod is fixed to the top surface of the first lifting plate and is inserted into the guide through hole of the marking connecting plate. A guide sleeve is fixed to the bottom surface of the first lifting plate. A lower guide sleeve is inserted into the lower part of the guide sleeve. A guide post is fixed to the middle of the top surface of the bottom plate of the lower guide sleeve and is inserted into the guide sleeve. The bottom end of the buffer spring is fixed, and the top end of the buffer spring is fixed to the bottom surface of the first lifting plate. A marking pen is fixed to the bottom surface of the bottom plate of the lower guide sleeve, or other components can be used. A guide block is fixed to the inner side wall of the top of the lower guide sleeve. The guide block is inserted into the axial vertical guide groove formed in the middle of the outer side wall of the guide sleeve. It can be pushed by the push rod of the marking lifting cylinder to mark the top surface of the composite board that has just been inspected and transported, so as to facilitate the subsequent removal of unqualified composite boards for subsequent repair.

[0044] Its buffer spring can prevent the marker pen from falling too far and impacting the composite board too much, which could cause the marker pen or the composite board to break.

[0045] The above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also fall within the scope of the present invention, and the patent protection scope of the present invention should be defined by the claims.

Claims

1. A method for processing a continuous fiber reinforced thermoplastic honeycomb core composite panel, characterized in that: It includes the following steps: (1) Making plastic honeycomb core (1); (2) Install two continuous fiber reinforced thermoplastic skin rolls and two film rolls onto the continuous fiber reinforced thermoplastic skin unwinding mechanism (4) and the film roll unwinding mechanism (5) respectively for unwinding; (3) The surface of the continuous fiber reinforced thermoplastic skin is treated multiple times using a plasma processor (2) to further clean and treat the continuous fiber reinforced thermoplastic skin. (5) The plastic honeycomb core (1) is conveyed forward onto the conveying roller (11) of the core board conveying frame (60); (6) When the plastic honeycomb core (1) is conveyed forward, it is placed between the upper and lower adhesive films. The plastic honeycomb core (1), continuous fiber reinforced thermoplastic skin, and adhesive film are aligned by the alignment mechanism (10). After the alignment is completed, the continuous fiber reinforced thermoplastic skin, adhesive film and plastic honeycomb core (1) are gathered and stacked, and their positions from bottom to top are continuous fiber reinforced thermoplastic skin, adhesive film, plastic honeycomb core (1), adhesive film, and continuous fiber reinforced thermoplastic skin. The composite board formed after being stacked together is then sent to the heating zone (6) of the composite machine (3) for heating and composite, and then shaped by the cooling zone (7). (7) After the composite plate is removed from the cooling zone (7), its thickness is measured online by the thickness measuring device (30); (8) The composite machine (3) is pulled out by the traction unit (12); (9) The composite board that meets the requirements after thickness measurement is sent to the cutting machine (8) for length cutting, and finally the finished continuous fiber reinforced honeycomb core composite board is obtained.

2. The processing method of a continuous fiber reinforced thermoplastic honeycomb core composite panel according to claim 1, characterized in that: After step (7), the composite board with insufficient thickness is marked by a marking device.

3. The processing method of a continuous fiber reinforced thermoplastic honeycomb core composite panel according to claim 1, characterized in that: The fabrication of the plastic honeycomb core (1) in step (1) includes the following steps: (1) Polypropylene resin, antioxidant, light stabilizer and ultraviolet absorber are thoroughly mixed by a mixer to obtain a mixed resin; (2) The mixed resin is melt-extruded through an extruder into a vacuum setting box for setting; (3) Produce plastic round tubes of suitable specifications by adjusting the extruder parameters; (4) Cut the plastic round pipe into multiple plastic round pipe segments of the same length using a cutting device; (5) Arrange the plastic round pipe segments neatly on the pipe rack (40) and gather them into a round pipe honeycomb group of appropriate size; (6) The round tube honeycomb assembly is sent into the oven for baking and shaping. After baking and shaping, the round tube honeycomb core is obtained. (7) The round tube honeycomb core is cut into multiple sheets of the same thickness by a slicer (50) to obtain the plastic honeycomb core (1).

4. The processing method of a continuous fiber reinforced thermoplastic honeycomb core composite panel according to claim 3, characterized in that: The material rack (40) includes a horizontal bottom frame (41). The left and right front and rear parts of the bottom surface of the horizontal bottom frame (41) are fixed with casters with brakes. The left and right sides of the top surface of the horizontal bottom frame (41) are fixed with side support frames (42). The middle of the two side support frames (42) is formed with a vertical guide groove (43). The top surface of the top beam of the two side support frames (42) is fixed with the same left and right extending upper transverse beam (44). The outer side walls of the front and rear side support rods of the two side support frames (42) are fixed with external inserts. The connecting limit block (45) has a vertical limiting slot formed in the middle of the external connecting limit block (45). The inner wall of the vertical limiting slot extends out of the external connecting limit block (45) and faces the side wall of the middle part of the material rack (40). The side baffle plate (46) is inserted into the two vertical limiting slots on the same side. Multiple plastic round tube segments are stacked between the two side support frames (46) and above the top surface of the horizontal bottom frame (41) and are fixed by adhesive to form a round tube honeycomb group. The front and rear ends of the round tube honeycomb group are close to or tightly attached to the opposite wall surfaces of the two side baffle plates (46).

5. The processing method of a continuous fiber reinforced thermoplastic honeycomb core composite panel according to claim 4, characterized in that: The top surface of the circular tube honeycomb group is pressed against the top cover plate (47). The top surface of the left and right parts of the top cover plate (47) is fixed with a limiting sleeve (471). The horizontal limiting plate (472) is inserted into the limiting sleeve (471). The outer end of the horizontal limiting plate (472) extends out of the limiting sleeve (471) and is inserted into the corresponding vertical limiting slot (43). The front and rear sides of the outer end of the horizontal limiting plate (472) are close to the inner side of the corresponding vertical limiting slot (43). The top surface of the inner end of the horizontal limiting plate (472) is fixed with a limiting block (473). The corresponding end face of the limiting block (473) is fixed with a permanent magnet block (474), which is pressed against the corresponding end face of the corresponding limiting sleeve (471) and magnetically fixed. Two upper transverse beams (44) are fixed at the front and rear of the top surface of the two side support frames (46). Vertical through holes are formed in the middle of the left and right sides of the upper transverse beams (44). Guide rods (441) are inserted into the corresponding vertical through holes. The upper part of the guide rod (441) extends out of the top of the vertical through hole, and the bottom of the guide rod (441) extends out of the bottom of the vertical through hole. The screw part formed in the middle of its bottom end face is screwed into the screw hole formed on the top surface of the upper cover plate (47). The compression spring (48) is inserted into the lower part of the corresponding guide rod (441). The top of the compression spring (48) is applied to the bottom surface of the corresponding upper transverse beam (44), and the bottom end is applied to the top surface of the upper cover plate (47).

6. The processing method of a continuous fiber reinforced thermoplastic honeycomb core composite panel according to claim 4, characterized in that: The upper and lower parts of the outer side wall of the external insertion limiting block (45) are formed with through holes. The adjusting stud (451) is inserted into the corresponding through hole, and its outer end extends out of the corresponding through hole and is screwed with a locking nut (452). The corresponding end face of the locking nut (452) presses against the outer side wall of the external insertion limiting block (45). The inner ends of the two corresponding adjusting studs (451) extend out of the inner end of the through hole and are fixed on the same pressing plate (453). The pressing plate (453) presses against the outer side wall of the corresponding side baffle plate (46). A pressing spring is inserted into the adjusting stud (451). One end of the pressing spring is applied to the outer side wall of the pressing plate (453), and the other end is applied to the inner side wall of the corresponding vertical limiting slot.

7. The processing method of a continuous fiber reinforced thermoplastic honeycomb core composite panel according to claim 1, characterized in that: The thickness measuring device (30) includes a first thickness measuring frame (31) and a second thickness measuring frame (32); The first thickness gauge (31) is located behind the second thickness gauge (32); The first thickness measuring frame (31) includes two side support beams (311) on the left and right. The two ends of two connecting beams (312) extending left and right are fixed to the opposite walls of the upper part of the two side support beams (311). Two transverse rotating screws (313) are provided between the two connecting beams (312). The two ends of the transverse rotating screws (313) are movably connected to the two side support beams (311) through bearings. A moving motor (35) is fixed on the outer wall of one of the side support beams (311). The moving motor (35) drives the two transverse rotating screws (313) to rotate. The moving block (315) is screwed on the corresponding transverse rotating screw (313). Transverse guide rails are fixed on the opposite walls of the two connecting beams (312). Guide blocks are fixed on the walls of the two moving blocks (315) that are far apart. The transverse guide rails are inserted into the guide grooves of the corresponding guide blocks. The two moving blocks (315) are positioned opposite each other on their respective walls, and each is fixed with a laser thickness sensor (33). The laser of the laser thickness sensor (33) is used to measure the thickness of the composite plate being transported between the two moving blocks (315) by irradiating the top and bottom surfaces.

8. The processing method of a continuous fiber reinforced thermoplastic honeycomb core composite panel according to claim 7, characterized in that: One end of the transverse rotating screw (313) extends out of the corresponding side support beam (311) and is fixed with a transmission gear (316). A motor base (34) is fixed on the outer side wall of the side support beam (311). The movable motor (35) is fixed on the connecting plate of the motor base (34). The end of the output shaft of the movable motor (35) extends out of the inner end face of the connecting plate of the motor base (34) and is fixed with a drive gear (341). The drive gear (341) meshes with the two transmission gears (316).

9. The processing method of a continuous fiber reinforced thermoplastic honeycomb core composite panel according to claim 7, characterized in that: The second thickness measuring frame (32) includes two side connecting plates on the left and right. Two connecting beams extending to the left and right are fixed on the upper part between the two side connecting plates. Second laser thickness sensors (36) are fixed on the left, middle and right parts of the opposite wall of the two connecting beams. The upper and lower second laser thickness sensors (36) are corresponding to each other.

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