CN115625922A - Thermoplastic honeycomb processing method - Google Patents

Abstract

The invention discloses a processing method of a thermoplastic honeycomb body, which comprises the working procedures of sheet extrusion molding, plastic molding, slitting, twisting, folding molding, heat seal molding, cold cut molding and transverse cutting to form a thermoplastic honeycomb body profile. The height of the thermoplastic honeycomb section obtained by the method can be adjusted at will according to the needs to meet the requirements of different occasions on the strength of the thermoplastic honeycomb section, and the higher the height is, the better the strength is. And the method has relatively simple process flow and can be widely applied to the field of production and processing of thermoplastic honeycomb bodies.

Description

Thermoplastic honeycomb processing method

Technical Field

The invention relates to the technical field of thermoplastic material processing and forming, in particular to a thermoplastic honeycomb body processing method.

Background

The application of the honeycomb-shaped plastic plate has been in the history for more than ten years, and the material has the characteristics of light weight, high strength, impact resistance, ageing resistance, no water absorption, corrosion resistance, mildew resistance, shock absorption and the like, so that the material is widely applied. At present, the processing method and the equipment of the thermoplastic honeycomb body mainly adopt technical equipment related to a priority patent submitted by a research and development department of certain foreign university in China, the Chinese patent application number is 2005800393512, and the semi-closed thermoplastic honeycomb body and the production method and the production equipment thereof are named. In order to break the monopoly of production and processing of thermoplastic honeycomb materials by foreign technologies, research and development on processing technologies and methods of thermoplastic honeycombs are needed, technical barriers are broken, and national and international competitiveness of enterprises in China is improved. And the existing honeycomb body section bar formed by longitudinal folding is difficult to fold and form when the thickness of the honeycomb body stud and the height of the honeycomb body are increased, the thickness of the common honeycomb body stud is 0.50-1mm, the height of the common honeycomb body product is 20mm, and the honeycomb body stud refers to the outer wall of the honeycomb body. The load-bearing capacity of the honeycomb profile is therefore greatly restricted.

Disclosure of Invention

The invention aims to provide a thermoplastic honeycomb body processing method, which solves the problem that the existing processing method can not form a honeycomb body section with thick stud and high integral height.

The technical scheme adopted by the invention for solving the technical problems is as follows: a method of processing a thermoplastic honeycomb body comprising the steps of:

s1: sheet extrusion molding, forming a continuous sheet by a thermoplastic extrusion unit and conveying the continuous sheet forwards;

s2: plastic forming to make the continuous sheet produce plastic deformation and form alternately arranged transverse grooves and transverse convex grooves on the sheet to obtain continuous section bar with transverse concave-convex structure

S3: slitting, namely slitting the sectional material along the conveying direction of the sectional material into a plurality of strip-shaped sectional materials and horizontally conveying the sectional materials forwards;

s4: twisting, namely adjusting the horizontally conveyed strip-shaped section bar to ensure that the section bar is twisted into a vertical direction and conveyed forwards;

s5: folding and forming, namely folding the vertically arranged strip-shaped profiles together to enable the adjacent strip-shaped profiles to be mutually combined to form a group of closed polygonal cavities;

s6: and (3) heat-sealing and shaping, and heating to bond the folded strip-shaped profiles into a continuous thermoplastic honeycomb profile.

Furthermore, a cooling and transverse cutting step is provided after step S6, in which the thermoplastic honeycomb profile is cooled, shaped and transversely cut.

Further, the widths of the strip-shaped sections after slitting in the step S3 are the same and are matched with the heights of the thermoplastic honeycomb bodies after processing and forming.

Furthermore, in the step S4, the turning directions of two adjacent strip-shaped profiles are the same or opposite.

Preferably, the polygonal cavity formed in step S5 has a hexagonal structure.

Preferably, the step S6 of heat-sealing and shaping is performed by using a method of gluing or surface welding or a method of gluing and surface welding simultaneously.

Furthermore, the gluing method is provided with a gluing process before the slitting step, the outer convex surfaces of the transverse grooves and the transverse convex grooves are glued, and the strip-shaped section bars are heated in the heat seal shaping step, so that the glue is melted to bond the adjacent strip-shaped section bars together.

In order to ensure that two adjacent strip-shaped profiles form a polygonal cavity, a strip-shaped profile waveform phase adjusting step is further arranged before the step S5, so that the bottom edges of the transverse grooves of two adjacent strip-shaped profiles are aligned with each other or the bottom edges of the transverse grooves of two adjacent strip-shaped profiles are aligned with the top edges of the transverse convex grooves.

The invention has the beneficial effects that: the processing method can rapidly complete the processing and forming of the thermoplastic honeycomb body, and has the advantages of less process flow and low processing cost. Meanwhile, the thermoplastic honeycomb section bars with various heights can be produced according to the requirements by the method, the stud thickness of the thermoplastic honeycomb section bar is also convenient to adjust, the thermoplastic honeycomb section bars with various stud thicknesses can be manufactured, and the size of the polygonal cavity of the honeycomb body can also be adjusted. Therefore, the thermoplastic honeycomb section with more dimensions and higher bearing capacity can be prepared by the method, thereby solving the problems that the existing equipment method can only produce the thermoplastic honeycomb with low height and small stud thickness, the thermoplastic honeycomb section has low bearing capacity and the application range is limited.

The invention will be explained in more detail below with reference to the drawings and examples.

Drawings

FIG. 1 is a process flow diagram of the present invention.

FIG. 2 is a schematic view of a production line used in the present invention.

FIG. 3 is a side view of a forming roll of the present invention.

Fig. 4 is a partially enlarged view of a in fig. 3.

FIG. 5 is a schematic view of the vacuum extractor and the forming roller of the present invention.

Fig. 6 is a partially enlarged view of B in fig. 5.

FIG. 7 is a partial schematic view of the vacuum line of the present invention mated to a mounting plate.

Fig. 8 is a partial structure diagram of the section bar formed by the plastic sheet material through the plastic forming unit in the invention.

FIG. 9 is a schematic view of the structure of the glue applicator of the present invention.

Fig. 10 is a perspective view of a first active pulling roll of the present invention.

Fig. 11 is a schematic perspective view of a first patterned roll tractor according to the present invention.

Fig. 12 is a schematic perspective view of a second patterned roll tractor according to the present invention.

Fig. 13 is a perspective view of a slitting machine according to the present invention.

Fig. 14 is a schematic perspective view of the torsion platform of the present invention.

FIG. 15 is a front view of a direction-adjusting roller of the present invention.

Fig. 16 is a partial enlarged view of C in fig. 15.

Fig. 17 is a schematic perspective view of a waveform phase adjustment mechanism according to the present invention.

Fig. 18 is a partially assembled perspective view of the down-pressure roller according to the present invention.

Fig. 19 is a schematic perspective view of the gathering platform of the present invention.

Fig. 20 is a schematic perspective view of the strip-shaped material cut in step S3 according to the present invention.

Fig. 21 is a schematic perspective view of the twisted ribbon-shaped material in step S4 of the present invention.

Fig. 22 is a schematic perspective view of the folded and formed structure in step S5 of the present invention.

Detailed Description

In one embodiment, as shown in FIG. 1, a method of processing a thermoplastic honeycomb body comprises the steps of:

s1: sheet extrusion molding, forming a continuous sheet by a thermoplastic extrusion unit and conveying the continuous sheet forwards;

s2: performing plastic forming, namely performing plastic deformation on the continuous sheet to form transverse grooves and transverse convex grooves which are alternately arranged on the sheet, so as to obtain a continuous section with a transverse concave-convex structure, as shown in fig. 8;

s3: slitting, slitting the sheet along the conveying direction of the sheet to form a plurality of strip-shaped sections with the same width, and conveying the strip-shaped sections in parallel forwards, wherein the width of the slit strip-shaped sections is the same as the height of the processed and formed thermoplastic honeycomb body, that is, the thermoplastic honeycomb body with the height of how much needs to be processed is slit into the strip-shaped sections with the width of how much, as shown in fig. 20;

s4: twisting, namely adjusting the strip-shaped sectional materials conveyed in parallel to ensure that the strip-shaped sectional materials are twisted by 90 degrees to be in a vertical direction and conveyed forwards, wherein the twisting directions of two adjacent strip-shaped sectional materials are the same or opposite; then, the wave phase of the strip-shaped profiles is adjusted to make the bottom edges of the transverse grooves of two adjacent strip-shaped profiles aligned with each other or to make the bottom edges of the transverse grooves of two adjacent strip-shaped profiles aligned with the top edges of the transverse convex grooves, as shown in fig. 21.

S5: folding and forming, namely folding the vertically arranged strip-shaped profiles together to enable the adjacent strip-shaped profiles to be matched with each other to form a group of closed polygonal cavities, wherein the polygonal cavities in the embodiment are preferably but not limited to hexagonal structures, as shown in fig. 22;

s6: and (3) heat-sealing and shaping, and heating to bond the folded strip-shaped profiles into a continuous thermoplastic honeycomb profile. Specifically, one of the two methods of gluing and surface welding may be adopted, or the two methods may be adopted simultaneously for bonding. When the gluing method is adopted, the matched overlapping surfaces of the transverse grooves and the transverse convex grooves of the sheet are required to be glued before heat seal setting. The gluing process is preferentially placed before the slitting step, the whole plate sheet is glued, and processing and operation are convenient.

S7: cooling and shaping, namely cooling and shaping the thermoplastic honeycomb section;

s8: the thermoplastic honeycomb profile is cut into sheets of the desired length by cross-cutting.

The processing method of the present invention is described in detail below with reference to specific apparatus to better understand the concept of the present invention.

The step S1 is completed through a thermoplastic extrusion unit 1, the step S2 is completed through a plastic deformation unit 2, the gluing process is completed through a gluing unit 3, the step S3 is completed through a slitting unit 4, the step S4 is completed through a twisting unit 5, the step S5 is completed through a folding and forming unit 6, the step S6 is completed through a heat seal forming unit 7, the step S7 is completed through a cooling and forming unit 8, the step S8 is completed through a transverse cutting device 9, and the waveform phase adjustment of the strip-shaped section is completed through a waveform phase adjusting device 10.

The thermoplastic extrusion unit 1 of the present invention is a device commonly used in the industry, and mainly comprises an extrusion die 11, wherein plastic particles are melted by heating, and then extruded through a die orifice of the extrusion die 11 to form a continuous plastic sheet 100, and the plastic sheet 100 has strong plasticity due to high temperature. The formed plastic sheet enters the lower plastic forming unit 2 for forming under the action of self weight.

As shown in fig. 2 to 7, the plastic forming unit 2 includes a forming roller 21, the plastic sheet enters the forming roller 21 from above, and the forming roller 21 is provided with a driving source, rotatable 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 forming grooves 211 for forming the transverse grooves 200 and the forming ribs 212 for forming the transverse convex grooves 300 are alternately distributed on the surface of the forming roller 21. The plastic sheet 100 extruded from the extrusion die 11 forms a set of transverse grooves 200 and transverse grooves 300 alternately arranged under the action of the forming grooves 211 and the forming ribs 212, so as to obtain a continuous profile 400 with a transverse concave-convex structure, as shown in fig. 8. The bottom surface of the forming groove 211 has the same width as the upper surface of the forming rib 212.

In order to ensure that the plastic sheet 100 can be molded along the shape of the molding groove 211 after falling on the molding roller 21, and ensure the molding effect, the bottom surface of the molding groove 211 is provided with air suction holes 213, a main air suction channel 214 is arranged in the molding roller 21, the main air suction channel 214 is provided with a vacuumizing device 22 in a butt joint manner, the vacuumizing device 22 sucks air into the main air suction channel 214, so that the air suction holes 213 generate negative pressure suction force, the plastic sheet 100 falling on the molding roller 21 is sucked into the molding groove 211, and the plastic sheet 100 can be attached to the molding groove 211.

The matching structure of the vacuum extractor 22 and the forming roller 21 is specifically as follows: the vacuum-pumping device 22 is fixedly arranged on one side of the forming roll 21, the vacuum-pumping device 22 is provided with two vacuum-pumping pipelines 221, pipe orifices of the two vacuum-pumping pipelines 221 are respectively matched with two end faces of the forming roll 21, and pipe orifices of the vacuum-pumping pipelines 221 are positioned on two sides of a blanking area where the plastic sheet 100 enters the forming roll 21. The forming roller 21 is provided with a main air suction channel 214 corresponding to each forming groove 211, and the main air suction channel 214 is a through hole structure which is arranged along the axial direction of the forming roller 21 and penetrates through the whole forming roller 21. The nozzle of the vacuum-pumping duct 221 can cover one or more main suction ducts 214 at the same time. The main suction channel 214 is simultaneously sucked through the vacuuming pipes 221 at both sides, thereby ensuring the uniformity of the negative pressure in the molding groove 211. The nozzle of the vacuum pipe 221 is attached to the end surface of the forming roll 21 and can move relatively, i.e. the forming roll 21 can rotate against the suction force of the vacuum pipe 221. Specifically, as shown in fig. 6 and 7, an elastic wear-resistant plastic sealing ring 222 (such as a silica gel material, a polytetrafluoroethylene material, etc.) is connected to a nozzle of the vacuuming pipe 221, the elastic wear-resistant plastic sealing ring 222 is pressed on an end surface of the forming roller 21, and the elastic wear-resistant plastic sealing ring and the forming roller are in rotational friction fit. The two sides of the forming roll 21 are provided with mounting plates 223, the mounting plates 223 are fixedly mounted on bearing seats (not shown in the figure) of the forming roll 21, the mounting plates 223 are provided with through holes for the vacuum-pumping pipeline 221 to pass through, and the vacuum-pumping pipeline 221 can move back and forth along the axial direction. The elastic wear-resistant plastic sealing ring 222 is fixedly provided with a connecting plate 224, the connecting plate 224 is provided with a spring guide post 225, the mounting plate 223 is provided with a guide post through hole, the other end of the spring guide post 225 penetrates through the guide post through hole, the spring guide post 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 pressed on the forming roller 21 all the time.

The above-mentioned vacuum pumping structure is a preferred embodiment, but not limited to this embodiment, and any pumping structure capable of generating negative pressure suction force to the forming groove 211 falls within the protection scope of the present invention.

In addition, to ensure that the plastic sheet 100 does not deviate from the forming roller 21 during the fall, a side pressure roller 23 is provided on the side where the forming roller 21 is fed, and the side pressure roller 23 is a smooth roller and functions to give a guide to the plastic sheet 100 so that the plastic sheet 100 abuts against the forming roller 21.

In addition, the transverse groove 200 and the transverse convex groove 300 can be formed by adopting a structure that the forming roller 21 and the side pressure roller 23 are mutually meshed, namely, a forming tooth structure matched with the forming groove 211 is arranged on the side pressure roller 23, the structure has high precision requirement on the forming teeth, so the processing difficulty is high, and if the matching is not in place, the formed transverse groove 200 is not qualified. Meanwhile, after molding, the plastic sheet loses molding force, so the plastic sheet is easy to deform under the action of external force, and the molding stability is poorer than the negative pressure molding effect. By adopting the structure of negative pressure vacuumizing, a plurality of forming grooves can be kept in a negative pressure state at the same time, and the formed transverse grooves 200 are adsorbed in the forming grooves 211 and conveyed forwards, so that the forming stability is improved.

A transition frame 20 is arranged behind the forming roller 21, the transition frame 20 is of a rectangular frame structure, a group of rotating supporting rollers is arranged on the transition frame 20, and the transition frame 20 mainly gives a cooling time to the section bar 400 so as to cool and shape the section bar. After the transition frame 20, the section bar 400 is sent to the gluing unit 3 through the section bar traction device 30 to coat the hot melt glue on the matching overlapping surfaces of the transverse groove 200 and the transverse convex groove 300. As shown in fig. 9, the gluing unit 3 includes a gluing machine 31, two glue rollers 32 are provided in the gluing machine 31, the two glue rollers 32 respectively act on the front and back surfaces of the section bar 400, and glue is applied to the matching overlapping surfaces of the transverse groove 200 and the transverse tongue 300. In order to ensure the reliability of the contact between the glue applicator roller 32 and the transverse groove 200 or the transverse tongue 300, a set of guide rollers 33 is also provided in the glue applicator 31, here the conventional design of the glue applicator 31 and not described in detail.

Section bar draw gear 30 includes first initiative carry over pinch rolls 3001 and is located the first supplementary deflector roll 3002 of first initiative carry over pinch rolls 3001 both sides, first initiative carry over pinch rolls 3001 is the drive roll, connects and is provided with drive arrangement, drives first initiative carry over pinch rolls 3001 and rotates, as shown in fig. 10, be provided with the shaping recess and the protruding muscle of shaping the same with shaping roll 21 structure on the first initiative carry over pinch rolls 3001, make the horizontal recess 200 of section bar and horizontal tongue 300 card go into in the first initiative carry over pinch rolls 3001 and drive section bar 400 forward movement, first supplementary deflector roll 3002 is connected equally and is provided with drive arrangement, and the rotational speed is the same with first initiative carry over pinch rolls 3001. The first driving traction roller 3001 and the first auxiliary guide roller 3002 both adopt driving rotation structures, so that the forced stretching deformation of the profile 400 in the conveying process can be avoided.

The glued profile 400 enters the slitting unit 4, and the profile 400 is slit in the transport direction by the slitting unit 4 to form a multi-strip profile 500, as shown in fig. 18, the width of the strip profile 500 being the same as the height of the thermoplastic honeycomb profile 600 to be formed. The slitting unit 4 comprises a slitting machine 41, and a first cotton roll tractor 40 is arranged between the glue spreader 31 and the slitting machine 41. As shown in fig. 11, the first patterned roller drawing machine 40 includes a main drawing patterned roller 4001 and auxiliary drawing rollers 4002 located at two sides of the main drawing patterned roller 4001, the structure of the main drawing patterned roller 4001 is the same as that of the first active drawing roller 3001, the auxiliary drawing roller 4002 is a smooth roller structure, the main drawing patterned roller 4001 and the auxiliary drawing rollers 4002 are both powered rollers and have the same linear speed, and the profile 400 comes out of the glue spreader 31, enters the auxiliary drawing roller 4002 at one side, winds around the main drawing patterned roller 4001, and finally comes out of the auxiliary drawing roller 4002 at the other side, and enters the air cutting machine 41. As shown in fig. 13, the slitting machine 41 includes a slitting upper knife roller 411 and a slitting lower knife roller 412, which are matched with each other, and the profile 400 passes through between the slitting upper knife roller 411 and the slitting lower knife roller 412 to realize slitting. A group of cutting slits 4111 are arranged on the upper knife roll 411, and the lower knife roll 412 is of a sheet structure and is matched with the cutting slits 4111 on the upper knife roll 411 to realize cutting. The front and rear positions of the upper slitting knife roll 411 and the lower slitting knife roll 412 are respectively provided with a front profile guide roll 413 and a rear profile guide roll 414, and the slitting of the profile 400 can be completed by one slitting machine 41, that is, the width of the strip-shaped profile 500 cut by one slitting machine 41 is the same as the height of the thermoplastic honeycomb profile 600 to be molded. When the profile 400 is wider and the strip profile 500 to be slit is narrower, the slit pulling force applied to slit the profile 400 at one time is large, which may cause the profile 400 to deform, and the slitting can be performed in multiple steps. That is, after the first cutting, the cut strip-shaped section bar 500 is wind cut again until the required width is cut, and the adoption of multiple cutting can reduce the cutting pulling force of the section bar 400 and avoid the deformation of the section bar after the cutting.

When multiple slitting is adopted, the multi-component slitting machine 41 is arranged at intervals on the traveling route of the profile 400. The invention takes two-pass slitting as an example, wherein a first pass is provided with a slitting machine 41, a second pass is provided with two wind-cutting machines 41 side by side, and a second patterned roller tractor 50 is arranged between the first slitting machine 41 and the second wind-cutting machine 41. The second patterned roll traction machine 50 includes a second main traction patterned roll 5001 and a second auxiliary traction roll 5002, the second auxiliary traction roll 5002 is provided with a first limiting groove 5003, and the width of the first limiting groove 5003 is adapted to the width of the once-cut strip-shaped material 500, so as to ensure that the once-cut strip-shaped material 500 advances according to a set route, as shown in fig. 12. The second splitting machine 41 is different from the first splitting machine 41 in that: the upper slitting knife roll 411 of the second air cutting machine 41 is provided with a set of second limiting grooves 4112 which have the same width as the first slit strip-shaped profile 500, the front profile guide roll 413 is provided with a third limiting groove 4131 which has the same width as the first slit strip-shaped profile 500, and the rear profile guide roll 414 is provided with a fourth limiting groove (not shown) which has the same width as the second slit strip-shaped profile 500.

The slit strip-shaped profiles 500 are conveyed forwards in a horizontal direction, and enter the twisting unit 5, and each strip-shaped profile 500 is adjusted by the twisting unit 5, so that the horizontal direction conveying of the strip-shaped profiles 500 is changed into the vertical direction conveying, as shown in fig. 19, that is, the strip-shaped profiles 500 are rotated by 90 °, and the rotation directions of the two adjacent strip-shaped profiles 500 can be the same or opposite.

As shown in fig. 14 to 16, the twisting unit 5 includes a twisting platform 51, and a set of direction-adjusting rollers 52 disposed on the direction-adjusting platform 51 at intervals, wherein the direction-adjusting rollers 52 are disposed perpendicular 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 have the same structure, and two adjacent direction-adjusting grooves 53 can be arranged in the same direction or in the opposite direction. One side wall of the direction-regulating groove 53 is a vertical surface 531, and the other side wall is a guide inclined surface 532, and the strip-shaped profile 500 is leaned on the guide inclined surface 532 to enter the direction-regulating roller 52 and is conveyed forwards. The direction-adjusting grooves 53 on two adjacent direction-adjusting rollers 52 are gradually narrowed along the conveying direction of the strip-shaped profile 500, and simultaneously, the inclination of the guide inclined plane 532 is gradually increased until the direction is vertical. So that the same strip-shaped section bar 500 is gradually adjusted from the horizontal state to the vertical state by the action of the direction-adjusting grooves 53 of the plurality of direction-adjusting rollers 52. Meanwhile, the distance between two adjacent direction-adjusting grooves 53 is gradually reduced along the conveying direction of the strip-shaped section 500, so that the distance between the strip-shaped sections 500 which finally come out from the last direction-adjusting roller 52 of the twisting platform 51 is smaller than the width of the strip-shaped section 500, and in the subsequent conveying process, the strip-shaped section 500 can lean against the strip-shaped section 500 on the side even if the strip-shaped section 500 is inclined in a certain mode, and the strip-shaped section 500 cannot return to the horizontal direction.

The vertically adjusted ribbon-shaped profiles 500 enter the folding forming unit 6, and the vertically arranged ribbon-shaped profiles 500 are folded together by the folding forming unit 6, so that the adjacent ribbon-shaped profiles 500 are mutually matched to form a group of closed polygonal cavities 700, as shown in fig. 22.

In order to ensure that the two adjacent strip-shaped profiles 500 can form a closed polygonal cavity 700 after being folded, the twisting platform 51 is further provided with a wave-shaped phase adjusting mechanism 60 of the strip-shaped profiles 500 before the direction-adjusting roller 52, and the wave-shaped phase adjusting mechanism 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 two adjacent strip-shaped profiles 500 are aligned with each other or the bottom edges of the transverse grooves 200 of the two adjacent strip-shaped profiles 500 are aligned with the top edges of the transverse convex grooves 300 during being folded. A third patterned roller tractor 70 is arranged between the waveform phase adjusting mechanism 60 and the splitting machine 41, and the structure of the third patterned roller tractor 70 is the same as that of the second patterned roller tractor 50, except that the width of the first limiting groove 4003 is matched with the width of the strip-shaped section 500 after secondary splitting.

As shown in fig. 17 and 18, the wave phase adjustment mechanism 60 includes a front support roller 6001 and a rear support roller 6002, a pressing roller 6003 pressed against the strip 500 between the support roller 6001 and the rear support roller 6002, and a height of the pressing by the pressing roller 6003 is changed to change a running distance of the strip 500. The specific mounting structure of the pressing roller 6003 is: the torsion platform 51 is provided with a mounting beam 54, the mounting beam 54 is provided with a group of mounting plates 55, and the mounting plates 55 are vertically provided with rotating screw rods 56. The pressing roller 6003 is rotatably mounted on the roller mounting arm 6004, a slider 6005 is arranged at one end of the roller mounting arm 6004, a screw nut (not shown) which is matched with the rotary screw 56 is arranged on the slider 6005, and a rotary handle 57 is further arranged at the upper end of the rotary screw 56. The rotating screw 56 is rotated by operating the rotating handle 57, and the screw nut drives the slider 6005 to move up and down, thereby adjusting the height of the pressing roller 6003. And fifth limiting grooves 6006 matched with the strip-shaped section bar 500 are formed in the front supporting roller 6001 and the rear supporting roller 6002. To avoid that all the hold-down rollers 6003 are mounted on one mounting beam 54 and arranged too crowded, several mounting beams 54 may be provided at intervals, so that the hold-down rollers 6003 of each strip-shaped profile 500 are staggered with respect to each other.

As shown in fig. 19, the gathering unit 6 includes a gathering platform 61, a left control plate 62, a right control plate 63, an upper limiting roller 64 and a bottom supporting platform or supporting roller 65 disposed on the gathering platform 61, and the inlet width of the strip-shaped profile 500 between the left control plate 62 and the right control plate 63 is adapted to the outlet width of the strip-shaped profile 500 of the torsion unit 5. The distance between the left control plate 62 and the right control plate 63 is gradually narrowed along the conveying direction of the section bar, so that the strip-shaped section bars 500 are gradually gathered together, and when the strip-shaped section bars 500 are output from the outlet of the gathering platform 61, all the strip-shaped section bars 500 are conveyed forward next to each other. The upper limit roller 64 is used for limiting the height of the strip-shaped section 500 and preventing the strip-shaped section 500 from moving upwards under stress in the gathering process.

The gathered strip-shaped profiles 500 are fed into a heat-seal shaping unit 7, and two adjacent strip-shaped profiles 500 are bonded together by melting hot melt glue applied to the mating overlapping surfaces of the transverse grooves 200 and the transverse grooves 300 by the gluing unit 3 by heating, thereby forming a thermoplastic honeycomb profile 600. The heat seal shaping unit 7 comprises a heating device 71 and a leveling device 72 arranged behind the heating device 71, wherein the heating device 71 heats the gathered strip-shaped section 500 to melt the hot melt adhesive so as to bond the mutually contacted sections; the leveling device 72 further levels the adhered profiles to keep the heights of the profiles consistent and level, and the leveling device 72 is composed of a set of upper leveling press rolls 721 and lower leveling press rolls 722 which are matched with each other.

Still be provided with cooling design unit 8 behind leveling device 72, carry out quick cooling to the thermoplastic honeycomb body after the shaping, cooling design unit 8 preferably adopts the air-cooled machine, and the cooling is stereotyped to the fashioned thermoplastic honeycomb body through cold wind. The cooling and setting unit 8 includes a set of cooling fans 81 blowing toward the upper and lower surfaces of the thermoplastic honeycomb body 600.

After the cooling and shaping unit 8, a transverse cutting device 9 for transversely cutting the section bar into required lengths is arranged, and the transverse cutting device 9 at least comprises a transverse cutter 91 which moves up and down. The structure is of conventional design and will not be described in detail here. The thermoplastic honeycomb profile 600 is cut to length by a transverse cutting device 9. The studs 800 of the thermoplastic honeycomb profile 600 refer to the outer walls of the polygonal cavity 700, and the thickness of the studs 800 is the thickness of the outer walls of the polygonal cavity 700.

The heat seal shaping unit 7, the cooling shaping unit 8 and the transverse cutting device 9 are provided with conveying rollers, and meanwhile, limiting structures for limiting the thermoplastic honeycomb section bar 600 in the width direction are further arranged to guarantee the forming quality of the thermoplastic honeycomb section bar 600. The drive roller and the stop structure are of conventional design and will not be described in detail here.

In addition, when the heat-seal setting step S6 employs surface fusion welding, the gluing step may be omitted, the gluing unit 3 is removed, and the heating device 71 is changed to a surface fusion welding device in the heat-seal setting unit 7, wherein the surface fusion welding is performed by fusing and bonding the upper and lower surfaces of the folded strip-shaped section 500 together at a high temperature. In addition, the strip-shaped section 500 can be combined together by using two processes of gluing and surface fusion welding, namely a gluing unit 3 is adopted, and a surface fusion welding device is adopted for heating and fusing in a heat seal shaping unit 7.

The invention is described above by way of example with reference to the accompanying drawings. It is to be understood that the specific implementations of the invention are not limited in this respect. Various insubstantial improvements are made by adopting the method conception and the technical scheme of the invention; the present invention is not limited to the above embodiments, and can be modified in various ways.

Claims (8)

1. A method of processing a thermoplastic honeycomb body comprising the steps of:

s1: sheet extrusion molding, forming a continuous sheet by a thermoplastic extrusion unit and conveying the continuous sheet forwards;

s2: performing plastic forming, namely performing plastic deformation on the continuous sheet to form transverse grooves and transverse convex grooves which are alternately arranged on the sheet to obtain a continuous section with a transverse concave-convex structure;

s3: slitting, namely slitting the sheet into a plurality of strip-shaped sections along the conveying direction of the sheet and horizontally conveying the sections forwards;

s4: twisting, namely adjusting the horizontally conveyed strip-shaped section bar to ensure that the horizontally conveyed strip-shaped section bar is twisted into a vertical direction and conveyed forwards;

s5: folding and forming, namely folding the vertically arranged strip-shaped sectional materials together to ensure that the adjacent strip-shaped sectional materials are mutually matched to form a group of closed polygonal cavities;

s6: and (4) heat-sealing and shaping, and heating to bond the folded strip-shaped profiles into a continuous thermoplastic honeycomb profile.

2. The method of processing a thermoplastic honeycomb according to claim 1, wherein: after step S6, a cooling and cross-cutting step is provided to cool and shape and transversely cut the thermoplastic honeycomb profile.

3. The method of processing a thermoplastic honeycomb according to claim 1, wherein: and in the step S3, the width of each strip-shaped section after slitting is the same and is matched with the height of the thermoplastic honeycomb body after processing and forming.

4. The method of processing a thermoplastic honeycomb according to claim 1, wherein: in the step S4, the turning directions of two adjacent strip-shaped profiles are the same or opposite.

5. The method of processing a thermoplastic honeycomb according to claim 1, wherein: the polygonal cavity formed in the step S5 is of a hexagonal structure.

6. The method of processing a thermoplastic honeycomb according to claim 1, wherein: and S6, the heat seal shaping is carried out by adopting a gluing or surface fusion welding method or a gluing and surface fusion welding method at the same time.

7. The method of processing a thermoplastic honeycomb according to claim 6, wherein: the gluing method is characterized in that a gluing process is arranged before the slitting step, outer convex surfaces of the transverse grooves and the transverse convex grooves are glued, and the strip-shaped section bars are heated in the heat seal shaping step, so that the glue is melted to glue the adjacent strip-shaped section bars together.

8. The method of processing a thermoplastic honeycomb according to claim 1, wherein: and a step of adjusting the waveform phase of the strip-shaped profiles before the step S5, so that the bottom edges of the transverse grooves of two adjacent strip-shaped profiles are aligned with each other or the bottom edges of the transverse grooves of two adjacent strip-shaped profiles are aligned with the top edges of the transverse convex grooves.

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