A method of processing thermoplastic honeycomb

Abstract

The application discloses a thermoplastic honeycomb body processing method, which comprises the following steps: sheet extrusion forming, plastic forming, slitting, twisting, folding forming, heat sealing shaping, cold cutting shaping and transverse cutting, so as to form a thermoplastic honeycomb body profile. The thermoplastic honeycomb body profile obtained by the method can adjust the height of the thermoplastic honeycomb body profile at will according to requirements, so as to meet the strength requirements of the thermoplastic honeycomb body profile in different occasions, and the higher the height is, the better the strength is. Moreover, the process flow of the method is relatively simple, and the method can be widely applied to the production and processing field of thermoplastic honeycomb bodies.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of thermoplastic material processing forming, in particular to a thermoplastic honeycomb body processing method. BACKGROUND

[0002] The application of honeycomb plastic plate has a history of more than ten years. Due to the many excellent properties of this material, it is widely used because of its light weight, high strength, impact resistance, aging resistance, non-water absorption, corrosion resistance, mold resistance, shock absorption and other characteristics. At present, the processing method and equipment of thermoplastic honeycomb body mainly use the technology and equipment involved in the priority patent submitted by the research and development department of a famous university in China. The Chinese patent application number is 2005800393512, and the name is semi-closed thermoplastic honeycomb body and its production method and production equipment. This patent comprehensively protects the structure, processing method and equipment of thermoplastic honeycomb body, resulting in that domestic manufacturers need to purchase or authorize the use of the Chinese agent authorized by the research and development department to produce thermoplastic honeycomb body material, which leads to high production cost of thermoplastic honeycomb plate, and seriously hinders the popularization and application of thermoplastic honeycomb plate. In order to break the monopoly of foreign technology in the production and processing of thermoplastic honeycomb material, therefore, it is necessary to research and develop the processing technology and method of thermoplastic honeycomb body, break through the technical barrier, and improve the domestic and international competitiveness of Chinese enterprises. And the existing longitudinal folding forming honeycomb profile is difficult to fold and form when the thickness of the honeycomb stud and the height of the honeycomb body increase. Generally, the thickness of the honeycomb stud is 0.50-1mm, and the height of the honeycomb product is 20mm. The honeycomb stud refers to the outer wall of the honeycomb body. Therefore, the load-bearing capacity of the honeycomb profile is greatly restricted. SUMMARY

[0003] The purpose of the present application is to provide a thermoplastic honeycomb body processing method, which solves the problem that the existing processing method cannot form a honeycomb profile with thick stud thickness and high overall height.

[0004] The technical scheme adopted by the present application to solve its technical problems is: a thermoplastic honeycomb body processing method, comprising the following steps:

[0005] S1: sheet extrusion forming, forming a continuous sheet by a thermoplastic extrusion unit and conveying it forward;

[0006] S2: plastic forming, causing plastic deformation of the continuous sheet to form alternating transverse grooves and transverse ridges on the sheet, and obtaining a continuous profile with transverse concave-convex structure

[0007] S3: slitting, slitting the profile into multiple strip-shaped profiles along the conveying direction of the profile and conveying them horizontally forward;

[0008] S4: twisting, adjusting the horizontally conveyed strip-shaped profiles to be twisted into vertical and forward conveying;

[0009] S5: converging and forming, converging the vertically arranged strip-shaped profiles together to make adjacent strip-shaped profiles combine with each other to form a group of closed polygonal cavities;

[0010] S6: heat sealing and setting, heating to make the above-mentioned strip-shaped profiles converged together to be integrated to form a continuous thermoplastic honeycomb profile.

[0011] Further, the step S6 is further provided with a cooling and transverse cutting step to cool and set the thermoplastic honeycomb profile and transversely cut.

[0012] Further, the width of each strip-shaped profile after the cutting in the step S3 is the same and is adapted to the height of the processed thermoplastic honeycomb.

[0013] Further, the turning directions of the adjacent two strip-shaped profiles in the step S4 are the same or opposite.

[0014] Preferably, the polygonal cavities formed in the step S5 are hexagonal structures.

[0015] Preferably, the heat sealing and setting in the step S6 is performed by using the method of gluing or surface welding or simultaneously using the method of gluing and surface welding.

[0016] Further, the method of gluing is provided with a gluing process before the cutting step to glue the transverse grooves and the outer convex surface of the transverse convex grooves, and the strip-shaped profiles are heated in the heat sealing and setting step to make the glue melt to bond the adjacent strip-shaped profiles together.

[0017] In order to ensure that the adjacent two strip-shaped profiles form polygonal cavities, the step S5 is further provided with a strip-shaped profile wave phase adjustment step to make the transverse groove bottom edges of the adjacent two strip-shaped profiles align with each other or the transverse groove bottom edges of the adjacent two strip-shaped profiles align with the top edges of the transverse convex grooves.

[0018] The beneficial effects of the present application: the processing method of the present application can quickly complete the processing and forming of the thermoplastic honeycomb, and the process flow is less and the processing cost is low. At the same time, through the method of the present application, various heights of thermoplastic honeycomb profiles can be produced according to the demand, and the thickness of the vertical ribs of the thermoplastic honeycomb profile can also be adjusted, and various thicknesses of the thermoplastic honeycomb profile can be made, and the size of the polygonal cavity of the honeycomb can also be adjusted. Therefore, more size specifications and higher bearing capacity of the thermoplastic honeycomb profile can be made by the method, thereby solving the problem that the existing equipment method can only produce thermoplastic honeycomb with small height and small vertical rib thickness, and the bearing capacity of the thermoplastic honeycomb profile is low, and the use range is limited.

[0019] The present application will be described in more detail below with reference to the accompanying drawings and examples. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 Process flow chart of the present application.

[0021] Figure 2 Schematic diagram of the production line used in the present application.

[0022] Figure 3 Side view of the forming roller in the present application.

[0023] Figure 4 Part A of the present application. Figure 3 Part B of the present application.

[0024] Figure 5 Schematic diagram of the cooperation between the vacuumizing device and the forming roller in the present application.

[0025] Figure 6 Part C of the present application. Figure 5 Part B of the present application.

[0026] Figure 7 Schematic diagram of the cooperation between the vacuumizing pipeline and the mounting plate in the present application.

[0027] Figure 8 Schematic diagram of the profile of the plastic sheet after being formed by the plastic forming unit in the present application.

[0028] Figure 9 Schematic diagram of the structure of the glue spreading machine in the present application.

[0029] Figure 10 Schematic diagram of the structure of the first driving roller in the present application.

[0030] Figure 11 Schematic diagram of the structure of the first flower roller traction machine in the present application.

[0031] Figure 12 Schematic diagram of the structure of the second flower roller traction machine in the present application.

[0032] Figure 13 Schematic diagram of the structure of the slitting machine in the present application.

[0033] Figure 14 Schematic diagram of the structure of the twisting platform in the present application.

[0034] Figure 15 Front view of the direction adjusting roller in the present application.

[0035] Figure 16 Part C of the present application. Figure 15 Part C of the present application.

[0036] Figure 17 Figure 3 is a schematic view of the three-dimensional structure of the waveform phase adjustment mechanism in the present application.

[0037] Figure 18 Figure 4 is a schematic view of the partial assembly of the lower pressing roller in the present application.

[0038] Figure 19 Figure 5 is a schematic view of the three-dimensional structure of the gathering platform in the present application.

[0039] Figure 20 Figure 6 is a schematic view of the strip-shaped profile after the step S3 of slitting in the present application.

[0040] Figure 21 Figure 7 is a schematic view of the strip-shaped profile after the step S4 of twisting in the present application.

[0041] Figure 22 Figure 8 is a schematic view of the three-dimensional structure after the step S5 of gathering and forming in the present application. DETAILED DESCRIPTION

[0042] An embodiment, as shown in Figure 1, is a thermoplastic honeycomb processing method, comprising the following steps: Figure 1

[0043] S1: sheet extrusion forming, forming a continuous sheet by a thermoplastic extrusion unit and conveying it forward;

[0044] S2: plastic forming, causing plastic deformation of the continuous sheet to form alternating transverse grooves and transverse ridges on the sheet, obtaining a continuous profile with transverse concave-convex structure, as shown in Figure 2; Figure 8

[0045] S3: slitting, slitting the sheet in the conveying direction of the sheet to form a plurality of strip-shaped profiles with the same width and conveying them forward in parallel, the width of the strip-shaped profile after slitting being the same as the height of the processed thermoplastic honeycomb, i.e. the number of strip-shaped profiles to be slitted is the same as the number of thermoplastic honeycombs to be processed, as shown in Figure 3; Figure 20

[0046] S4: twisting, adjusting the parallelly conveyed strip-shaped profiles to twist them by 90° to the vertical direction and conveying them forward, the twisting directions of the adjacent two strip-shaped profiles being the same or opposite; then adjusting the waveform phase of the strip-shaped profiles to align the bottom edges of the transverse grooves of the adjacent two strip-shaped profiles with each other or to align the bottom edges of the transverse grooves of the adjacent two strip-shaped profiles with the top edges of the transverse ridges, as shown in Figure 4. Figure 21

[0047] ​​​​S5: folding and forming, folding the vertically arranged strip-shaped profiles together, and making the adjacent strip-shaped profiles cooperate with each other to form a group of closed polygonal cavities, and the polygonal cavities in the embodiment are preferably but not limited to hexagonal structures, as shown in Figure 22

[0048] S6: heat bonding and shaping, heating the strip-shaped profiles folded together to bond them into a continuous thermoplastic honeycomb profile. Specifically, one of the two ways of gluing and surface welding can be used, or both ways can be used simultaneously. When the gluing method is used, the matching lap surface of the transverse groove and the transverse groove of the sheet needs to be glued before heat bonding and shaping. The gluing process is preferably placed before the cutting step to glue the whole sheet, which is convenient for processing and operation.

[0049] S7: cooling and shaping, cooling and shaping the thermoplastic honeycomb profile;

[0050] S8: cross-cutting, cutting the thermoplastic honeycomb profile into a plate with a desired length.

[0051] The processing method of the application is described in detail in combination with specific equipment, so that the concept of the application can be better understood.

[0052] The step S1 is completed by the thermoplastic extrusion unit 1, the step S2 is completed by the plastic deformation unit 2, the gluing process is completed by the gluing unit 3, the step S3 is completed by the cutting unit 4, the step S4 is completed by the twisting unit 5, the step S5 is completed by the folding and forming unit 6, the step S6 is completed by the heat bonding and shaping unit 7, the step S7 is completed by the cooling and shaping unit 8, the step S8 is completed by the cross-cutting device 9, and the wave phase adjustment of the strip-shaped profile is completed by the wave phase adjustment device 10.

[0053] The thermoplastic extrusion unit 1 involved in the application is a commonly used device in the industry, mainly including an extrusion die 11. Plastic particles are melted by heating, and then extruded through the die of the extrusion die 11 to form a continuous plastic sheet 100. At this time, the plastic sheet 100 has strong plasticity due to high temperature. The formed plastic sheet is under the action of its own weight and enters the plastic shaping unit 2 below for shaping.

[0054] As Figures 2 to 7 ​As shown, the plastic forming unit 2 includes a forming roller 21. The plastic sheet enters the forming roller 21 from above. The forming roller 21 is equipped with a drive source and can rotate about an axial direction. The length of the forming roller 21 is not less than the width of the plastic sheet 100 extruded from the extrusion die 11. The surface of the forming roller 21 is alternately distributed with forming grooves 211 for forming transverse grooves 200 and forming ribs 212 for forming transverse protrusions 300. Under the action of the forming grooves 211 and forming ribs 212, the plastic sheet 100 extruded from the extrusion die 11 forms a set of alternately arranged transverse grooves 200 and transverse protrusions 300, thereby obtaining a continuous profile 400 with a transverse concave-convex structure, such as... Figure 8 As shown. The bottom surface of the forming groove 211 has the same width as the upper surface of the forming rib 212.

[0055] To ensure that the plastic sheet 100 can be shaped along the shape of the forming groove 211 after falling onto the forming roller 21 and to guarantee the forming effect, the bottom surface of the forming groove 211 is provided with suction holes 213, and the forming roller 21 is provided with a main suction channel 214. The main suction channel 214 is connected to a vacuum device 22. By using the vacuum device 22 to draw air into the main suction channel 214, the suction holes 213 generate negative pressure suction, which draws the plastic sheet 100 falling onto the forming roller 21 into the forming groove 211, so that the plastic sheet 100 can fit into the forming groove 211.

[0056] The specific cooperation structure between the vacuum device 22 and the forming roller 21 is as follows: The vacuum device 22 is fixedly installed on one side of the forming roller 21. The vacuum device 22 is provided with two vacuum pipes 221, the openings of which are respectively fitted to the two end faces of the forming roller 21, and the openings of the vacuum pipes 221 are located on both sides of the material dropping area where the plastic sheet 100 enters the forming roller 21. The forming roller 21 is provided with a main suction channel 214 for each forming groove 211. The main suction channel 214 is a through hole structure arranged along the axial direction of the forming roller 21 and passing through the entire forming roller 21. The opening of the vacuum pipe 221 can simultaneously cover one or more main suction channels 214. By simultaneously sucking air from the main suction channels 214 through the vacuum pipes 221 on both sides, the uniformity of the negative pressure in the forming groove 211 is ensured. The opening of the vacuum pipe 221 is in contact with the end face of the forming roller 21 and can move relative to it, meaning the forming roller 21 can rotate despite the suction force of the vacuum pipe 221. Specifically, as shown... Figure 6 , Figure 7As shown, the pipe opening position of the vacuum pipe 221 is connected with an elastic wear-resistant plastic sealing ring 222 (such as silica gel material, polytetrafluoroethylene material, etc.), which is pressed on the end face of the forming roller 21 and rotates and rubs with each other. The forming roller 21 is provided with a mounting plate 223 fixedly installed on the bearing seat (not shown in the figure) of the forming roller 21, the mounting plate 223 is provided with a through hole for the vacuum pipe 221 to pass through, and the vacuum pipe 221 can move back and forth along the axial direction. The elastic wear-resistant plastic sealing ring 222 is fixedly installed with a connecting plate 224, the connecting plate 224 is installed with a spring guide column 225, the mounting plate 223 is provided with a guide column through hole, the other end of the spring guide column 225 passes through the guide column through hole, the spring guide column 225 is provided with an ejection spring 226, and the ejection spring 226 is pressed between the mounting plate 223 and the connecting plate 224. When the elastic wear-resistant plastic sealing ring 222 is worn, the ejection spring 226 ejects the connecting plate 224, so that the elastic wear-resistant plastic sealing ring 222 is always pressed on the forming roller 21.

[0057] The above-mentioned vacuum structure is a relatively optimal scheme, but is not limited to this scheme, as long as the suction structure can generate negative pressure adsorption force on the forming groove 211, which falls within the protection scope of the present application.

[0058] In addition, in order to ensure that the plastic sheet 100 does not deviate from the forming roller 21 during falling, a side pressing roller 23 is arranged on the feeding side of the forming roller 21, the side pressing roller 23 is a light roller, which functions to guide the plastic sheet 100 and make the plastic sheet 100 rely on the forming roller 21.

[0059] In addition, the structure of the forming roller 21 and the side pressing roller 23 can also be used to form the transverse groove 200 and the transverse protrusion groove 300, that is, the side pressing roller 23 is provided with a forming tooth structure matched with the forming groove 211. Due to the high precision requirement of the forming tooth, the machining difficulty is relatively large, and if the matching is not in place, the formed transverse groove 200 will not meet the requirements. At the same time, after forming, the plastic sheet loses the forming force, and is easily deformed under the action of external force, so the stability of the forming is poor. The structure of negative pressure vacuum can keep multiple forming grooves in negative pressure state at the same time, adsorb the formed transverse groove 200 in the forming groove 211 and transport it forward, and improve the stability of the forming.

[0060] A transition frame 20 is provided after the forming roller 21. The transition frame 20 is a rectangular frame structure, and a set of rotating support rollers are provided on the transition frame 20. The transition frame 20 mainly provides the profile 400 with a cooling time to allow the profile to cool and set. After the transition frame 20, the profile 400 is fed into the glue application unit 3 by the profile traction device 30 to apply hot melt adhesive to the mating surfaces of the transverse groove 200 and the transverse protrusion 300. Figure 9 As shown, the glue application unit 3 includes a glue applicator 31, which contains two glue application rollers 32. The two rollers 32 apply glue to the front and back surfaces of the profile 400, simultaneously applying glue to the mating surfaces of the transverse groove 200 and the transverse protrusion 300. To ensure reliable contact between the glue application rollers 32 and the transverse groove 200 or the transverse protrusion 300, a set of guide rollers 33 is also provided in the glue applicator 31. This is a conventional design structure of the glue applicator 31 and will not be described in detail here.

[0061] The profile traction device 30 includes a first active traction roller 3001 and first auxiliary guide rollers 3002 located on both sides of the first active traction tube 3001. The first active traction roller 3001 is an active roller and is connected to a driving device to drive the first active traction roller 3001 to rotate. Figure 10 As shown, the first active traction roller 3001 is provided with forming grooves and forming ribs that have the same structure as the forming roller 21, so that the transverse grooves 200 and transverse protrusions 300 of the profile 400 are engaged in the first active traction roller 3001 and drive the profile 400 to move forward. The first auxiliary guide roller 3002 is also connected to a driving device, and its rotation speed is the same as that of the first active traction roller 3001. Both the first active traction roller 3001 and the first auxiliary guide roller 3002 adopt an active rotation structure, which can prevent the profile 400 from being stretched and deformed during the conveying process.

[0062] After being coated with adhesive, the profile 400 enters the slitting unit 4, where it is slit along the conveying direction to form multiple strip profiles 500, such as... Figure 18 As shown, the width of the strip profile 500 is the same as the height of the thermoplastic honeycomb profile 600 to be formed. The slitting unit 4 includes a slitting machine 41, and a first patterned roller traction machine 40 between the glue applicator 31 and the slitting machine 41. Figure 11As shown, the first flower roller traction machine 40 includes a main traction flower roller 4001 and auxiliary traction rollers 4002 located on both sides of the main traction flower roller 4001. The structure of the main traction flower roller 4001 is the same as that of the first driving traction roller 3001. The auxiliary traction rollers 4002 are light roller structures. The main traction flower roller 4001 and the auxiliary traction rollers 4002 are both powered rollers and have the same linear speed. The profiled material 400 enters the auxiliary traction roller 4002 on one side after coming out of the glue applicator 31, then winds around the main traction flower roller 4001, and finally is guided out of the auxiliary traction roller 4002 on the other side to enter the air cutting machine 41. As shown in Figure 13 As shown, the slitting machine 41 includes a slitting upper cutter roller 411 and a slitting lower cutter roller 412 that cooperate with each other. The profiled material 400 passes between the slitting upper cutter roller 411 and the slitting lower cutter roller 412 to achieve slitting. The slitting upper cutter roller 411 is provided with a set of slitting grooves 4111. The slitting lower cutter roller 412 is a sheet structure that cooperates with the slitting grooves 4111 on the slitting upper cutter roller 411 to achieve slitting. The front and rear positions of the slitting upper cutter roller 411 and the slitting lower cutter roller 412 are provided with a front profiled material guide roller 413 and a rear profiled material guide roller 414, respectively. The slitting of the profiled material 400 can be completed by one slitting machine 41, i.e., the width of the strip-shaped profiled material 500 cut by one slitting machine 41 is the same as the height of the thermoplastic honeycomb body profiled material 600 to be formed. When the profiled material 400 is relatively wide and the required strip-shaped profiled material 500 is relatively narrow, the profiled material 400 is subjected to a large slitting pulling force during slitting, which may cause the profiled material 400 to deform. Therefore, multiple slitting can be selected. That is, after slitting, the strip-shaped profiled material 500 is air cut again until the required width is achieved. Multiple slitting can reduce the slitting pulling force of the profiled material 400 and avoid deformation of the profiled material after slitting.

[0063] When multiple slitting is used, multiple sets of slitting machines 41 are arranged at intervals on the travel route of the profiled material 400. Taking two slitting as an example, one slitting machine 41 is arranged in the first pass, two air cutting machines 41 are arranged side by side in the second pass, and a second flower roller traction machine 50 is arranged between the first slitting machine 41 and the second air cutting machine 41. The second flower roller traction machine 50 includes a second main traction flower roller 5001 and a second auxiliary traction roller 5002. The second auxiliary traction roller 5002 is provided with a first limiting groove 5003. The width of the first limiting groove 5003 is adapted to the width of the strip-shaped profiled material 500 after one slitting, so as to ensure that the strip-shaped profiled material 500 after one slitting travels along the set route, as shown in Figure 12The second slitting machine 41 is different from the first slitting machine 41 in that the upper cutting roller 411 of the second slitting machine 41 is provided with a group of second limiting grooves 4112 with the same width as the first-cut strip-shaped material 500, the front profile guide roller 413 is provided with a third limiting groove 4131 with the same width as the first-cut strip-shaped material 500, and the rear profile guide roller 414 is provided with a fourth limiting groove (not marked in the figure) with the same width as the second-cut strip-shaped material 500.

[0064] The cut strip-shaped material 500 is horizontally conveyed forward into the twisting unit 5, and each strip-shaped material 500 is adjusted by the twisting unit 5 to change from horizontal conveying to vertical conveying, as shown in Figure 19 , that is, the strip-shaped material 500 is rotated by 90°, and the rotation directions of the adjacent two strip-shaped materials 500 can be the same or opposite.

[0065] As shown in Figures 14 to 16 , the twisting unit 5 includes a twisting platform 51 and a group of direction-adjusting rollers 52 arranged at intervals on the direction-adjusting platform 51, and the direction-adjusting rollers 52 are arranged vertically to the conveying direction of the strip-shaped material 500. Each direction-adjusting roller 52 is provided with a row of direction-adjusting grooves 53, the direction-adjusting grooves 53 on the same direction-adjusting roller are the same in structure, and the adjacent two direction-adjusting grooves 53 can be arranged in the same direction or in the opposite direction. One side wall of the direction-adjusting groove 53 is a vertical surface 531, and one side wall is a guide inclined surface 532, and the strip-shaped material 500 leans on the guide inclined surface 532 to enter the direction-adjusting roller 52 and is conveyed forward. The direction-adjusting grooves 53 on the adjacent two direction-adjusting rollers 52 gradually narrow along the conveying direction of the strip-shaped material 500, and at the same time, the inclination of the guide inclined surface 532 gradually increases until it is vertical. Thus, the same strip-shaped material 500 is gradually adjusted from the horizontal state to the vertical state under the action of the direction-adjusting grooves 53 of the multiple direction-adjusting rollers 52. At the same time, the distance between the adjacent two direction-adjusting grooves 53 gradually decreases along the conveying direction of the strip-shaped material 500, so that the strip-shaped materials 500 finally coming out of the last direction-adjusting roller 52 of the twisting platform 51 have a distance smaller than the width of the strip-shaped material 500, so that in the subsequent conveying process, the strip-shaped material 500 will lean on the strip-shaped material 500 on the side even if it is inclined in a certain way, and will not cause the strip-shaped material 500 to return to the horizontal direction.

[0066] The strip-shaped material 500 adjusted to the vertical state enters the folding and forming unit 6, and the folding and forming unit 6 gathers the vertically arranged strip-shaped materials 500 together to form a group of closed polygonal cavities 700 by cooperation between the adjacent strip-shaped materials 500, as shown in Figure 22 .

[0067] To ensure that the adjacent two strip-shaped profiles 500 can form a closed polygonal cavity 700 after closing, the torsion platform 51 is further provided with a wave-shaped phase adjustment mechanism 60 of the strip-shaped profile 500 before the orientation roller 52, which is used for changing the walking distance of each strip-shaped profile 500, so that the bottom edges of the transverse grooves 200 of the adjacent two strip-shaped profiles 500 are aligned with each other or the bottom edges of the transverse grooves 200 of the adjacent two strip-shaped profiles 500 are aligned with the top edges of the transverse protrusions 300 when closing. The wave-shaped phase adjustment mechanism 60 is provided with a third flower roller traction machine 70 between the slitting machine 41, and the third flower roller traction machine 70 has the same structure as the second flower roller traction machine 50, except that the width of the first limiting groove 4003 is matched with the width of the strip-shaped profile 500 after the second slitting.

[0068] As shown in Figure 17 , Figure 18 The wave-shaped phase adjustment mechanism 60 includes a front supporting roller 6001 and a rear supporting roller 6002, a pressing roller 6003 pressing the strip-shaped profile 500 between the front supporting roller 6001 and the rear supporting roller 6002, and the height of the pressing roller 6003 is changed to change the walking distance of the strip-shaped profile 500. The specific installation structure of the pressing roller 6003 is that the torsion platform 51 is provided with an installation beam 54, the installation beam 54 is provided with a group of installation plates 55, and the installation plates 55 are vertically provided with rotating lead screws 56. The pressing roller 6003 is rotatably installed on a roller mounting arm 6004, one end of the roller mounting arm 6004 is provided with a sliding block 6005, the sliding block 6005 is provided with a lead screw nut (not marked in the figure) matched with the rotating lead screw 56, and the upper end of the rotating lead screw 56 is further provided with a rotating handle 57. The rotating handle 57 is operated to rotate the rotating lead screw 56, the lead screw nut drives the sliding block 6005 to move up and down, so as to adjust the height of the pressing roller 6003. The front supporting roller 6001 and the rear supporting roller 6002 are both provided with a fifth limiting groove 6006 matched with the strip-shaped profile 500. In order to avoid that all the pressing rollers 6003 are installed on one installation beam 54 and arranged too crowded, a plurality of installation beams 54 can be arranged at intervals, so that the pressing rollers 6003 of each strip-shaped profile 500 are staggered with each other.

[0069] As shown in Figure 19As shown, the gathering unit 6 comprises a gathering platform 61, a left control plate 62, a right control plate 63, an upper limiting roller 64 and a bottom support platform or support roller 65 arranged on the gathering platform 61, and the entrance width of the strip-shaped profile 500 between the left control plate 62 and the right control plate 63 is adapted to the exit width of the strip-shaped profile 500 of the twisting unit 5. The distance between the left control plate 62 and the right control plate 63 gradually narrows along the conveying direction of the profile, so that the strip-shaped profiles 500 are gradually gathered together, and when the strip-shaped profiles 500 are output from the exit of the gathering platform 61, all the strip-shaped profiles 500 are conveyed forward in close contact. The upper limiting roller 64 is used to limit the height of the strip-shaped profile 500 to prevent the strip-shaped profile 500 from moving upward under force during the gathering process.

[0070] The gathered strip-shaped profiles 500 enter the heat sealing and shaping unit 7, and the hot melt adhesive on the matching lap joint surface of the transverse recess 200 and the transverse convex groove 300 coated in the gluing unit 3 is melted by heating to bond the adjacent two strip-shaped profiles 500 together, thereby forming a thermoplastic honeycomb body profile 600. The heat sealing and shaping unit 7 comprises a heating device 71 and a flattening device 72 arranged after the heating device 71, the heating device 71 heats the gathered strip-shaped profiles 500 to melt the hot melt adhesive and bond the profiles in contact with each other; the flattening device 72 further flattens the profiles bonded together to keep the height of the profiles consistent and flat, and the flattening device 72 comprises a set of flattening upper and lower pressing rollers 721 and 722.

[0071] A cooling and shaping unit 8 is further arranged after the flattening device 72 to rapidly cool the formed thermoplastic honeycomb body, and the cooling and shaping unit 8 preferably adopts an air cooling machine to cool and shape the formed thermoplastic honeycomb body by cold air. The cooling and shaping unit 8 comprises a set of cooling fans 81 blowing towards the upper and lower surfaces of the thermoplastic honeycomb body 600.

[0072] A transverse cutting device 9 for cutting the profile into a desired length in the transverse direction is further arranged after the cooling and shaping unit 8, and the transverse cutting device 9 at least comprises a transverse cutting knife 91 moving up and down. The structure is a conventional design and will not be described in detail here. The thermoplastic honeycomb body profile 600 is cut into a certain length by the transverse cutting device 9. The vertical rib 800 of the thermoplastic honeycomb body profile 600 refers to the outer wall of the polygonal cavity 700, and the thickness of the vertical rib 800 is the thickness of the outer wall of the polygonal cavity 700.

[0073] The heat sealing and shaping unit 7, the cooling and shaping unit 8 and the transverse cutting device 9 are all provided with conveying rollers, and a limiting structure is further arranged to limit the thermoplastic honeycomb body profile 600 in the width direction to ensure the quality of the formed thermoplastic honeycomb body profile 600. The driving rollers and the limiting structure are conventional designs and will not be described in detail here.

[0074] In addition, when the heat sealing step S6 adopts the surface fusion welding method, the gluing step can be omitted, the gluing unit 3 is removed in the equipment, and the heating device 71 in the heat sealing unit 7 is changed into a surface fusion welding device, so that the upper and lower surfaces of the folded together strip-shaped profiles 500 are fused and combined together through high temperature. In addition, the strip-shaped profiles 500 can also be combined by using both the gluing and surface fusion welding processes. That is, the gluing unit 3 is used, and the surface fusion welding device is used for heating and melting in the heat sealing unit 7.

[0075] The application is described above with reference to the drawings. It is obvious that the specific implementation of the application is not limited to the above method. As long as various non-essential improvements are made by using the method concept and technical scheme of the application, or the above concept and technical scheme of the application are directly applied to other occasions without improvement, they are all within the protection scope of the application.

Claims

1. A method for processing thermoplastic honeycomb structures, characterized in that, Includes the following steps: S1: Sheet extrusion molding, forming a continuous sheet through a thermoplastic extrusion unit and conveying it forward; S2: Plastic forming, through the plastic forming unit, the continuous sheet is plastically deformed to form alternating transverse grooves and transverse protrusions on the sheet, to obtain a continuous profile with transverse concave and convex structure. The plastic forming unit includes a forming roller, the surface of which is alternately distributed with forming grooves for forming transverse grooves and forming ribs for forming transverse convex grooves, and the bottom surface of the forming grooves is distributed with air suction holes. S3: Slitting, the slitting unit slits the sheet into multiple strip profiles along the conveying direction of the sheet and conveys them horizontally forward; S4: Twist, the twisting unit adjusts the horizontally conveyed strip profile to twist it vertically and convey it forward; The torsion unit includes a torsion platform and a set of directional rollers spaced apart on the platform. The directional rollers are perpendicular to the conveying direction of the strip profile. Each directional roller has a row of directional grooves. One side wall of each directional groove is vertical, and the other side wall is a guide slope. The strip profile enters the directional roller against the guide slope and is conveyed forward. The directional grooves on adjacent directional rollers gradually narrow along the conveying direction of the strip profile. At the same time, the slope of the guide slope gradually increases until it becomes vertical. Simultaneously, the distance between adjacent directional grooves also gradually decreases along the conveying direction of the strip profile, so that the distance between the strip profiles that finally emerge from the last directional roller of the torsion platform is less than the width of the strip profile. The torsion platform is also equipped with a waveform phase adjustment mechanism for the strip profile before the adjustment roller, which is used to change the travel distance of each strip profile so that when the two adjacent strip profiles are closed, the bottom edge of the transverse groove of each other is aligned or the bottom edge of the transverse groove of each adjacent strip profile is aligned with the top edge of the transverse protrusion. S5: Closing and forming, the vertically arranged strip profiles are clasped together by the closing and forming unit, so that adjacent strip profiles cooperate with each other to form a set of closed polygonal cavities; S6: Heat sealing and shaping, the above-mentioned strip profiles are bonded together to form a continuous thermoplastic honeycomb profile by heating through the heat sealing and shaping unit.

2. The thermoplastic honeycomb processing method as described in claim 1, characterized in that: After step S6, a cooling and transverse cutting step is provided to cool and shape the thermoplastic honeycomb profile and cut it transversely.

3. The thermoplastic honeycomb processing method as described in claim 1, characterized in that: In step S3, the width of each strip profile after slitting is the same and is adapted to the height of the thermoplastic honeycomb after processing.

4. The thermoplastic honeycomb processing method as described in claim 1, characterized in that: In step S4, the flipping directions of two adjacent strip profiles are the same or opposite.

5. The thermoplastic honeycomb processing method as described in claim 1, characterized in that: The polygonal cavity formed in step S5 has a hexagonal structure.

6. The thermoplastic honeycomb processing method according to claim 1, characterized in that: The heat sealing and shaping step S6 is performed by adhesive bonding or surface welding, or by a combination of adhesive bonding and surface welding.

7. The thermoplastic honeycomb processing method as described in claim 6, characterized in that: The adhesive bonding method includes an adhesive application step before the slitting step, in which adhesive is applied to the outer convex surfaces of the transverse grooves and transverse protrusions, and the strip profile is heated in the heat-sealing and shaping step to melt the adhesive and bond adjacent strip profiles together.

8. The method for processing thermoplastic honeycomb as described in claim 1, characterized in that: Before step S5, a strip profile waveform phase adjustment step is set to align the bottom edges of the transverse grooves of two adjacent strip profiles with each other or align the bottom edges of the transverse grooves of two adjacent strip profiles with the top edges of the transverse protrusions.

Images