Manufacturing method of 3D printed decorative sheet

Abstract

A manufacturing method for 3D printed decorative panels, firstly placing workstations with the same or similar functions and manufacturing equipment on a linear assembly line; then placing the assembly lines in parallel; then providing one or more assembly lines without processing equipment as transition assembly lines; connecting the head and the end of each assembly line, and setting a right-angle turn or a "T"-shaped three-way turn at the connection position according to the flow direction; finally obtaining the required production line; and then scheduling the production flow direction to produce the panels according to the layered structure of the panels.

Description

Technical Field

[0001] The invention belongs to the technical field of decorative plate processing, and specifically is a method for manufacturing a 3D printed decorative plate. Background Art

[0002] In the production of decorative panels based on PVC or ceramics, the technical means of forming three-dimensional patterns have gradually evolved from the previous flat mapping + template hot pressing concave and convex effect to flatbed printer printing 2D patterns + flatbed printer accumulating transparent oil to form ink concave and convex effect. Since the flatbed printer suitable for this processing method is newly developed and very expensive, large-scale manufacturers are usually unable to equip multiple units.

[0003] In the prior art, boards with different layered functional structures mostly need to be produced by assembly lines with different process equipment. These assembly lines are relatively mature and have low unit prices, and large-scale manufacturers can configure multiple of them.

[0004] Due to the upgrading of production technology, flatbed printers were introduced into the production line (such as the board, production line and production method disclosed in Chinese patent application 2018116285574 "A 3D effect PVC decorative board and its 3D printing production method"). As the functions and pattern effects of boards become more and more diversified, it is necessary to produce various types of decorative boards with limited production resources. The technical solutions mentioned in the aforementioned patent application cannot meet the needs. Summary of the invention

[0005] In order to solve the above technical problems, this technical solution proposes a production method that can produce multiple types of boards in parallel. By building an assembly line in a standard factory building, the flow direction is changed according to the production board, so that different boards can be obtained through different processing steps, as follows:

[0006] A manufacturing method for 3D printed decorative panels, characterized in that workstations with the same or similar functions and manufacturing equipment are first placed on a linear assembly line; then the assembly lines are placed in parallel; then one or more assembly lines without processing equipment are provided as transitional assembly lines; the head and the end of each assembly line are connected, and a right-angle turn or a "T"-shaped three-way turn is set at the connection position according to the flow direction; finally, the desired production line is obtained;

[0007] Then, according to the layered structure of the produced boards, the production flow direction is scheduled to carry out board production.

[0008] When scheduling the flow direction, it can be achieved through the user-programmable part of the production line's automated control PLC program.

[0009] The production line includes a roller coating and curing station, a flatbed inkjet printer and a wire drawing station;

[0010] The roller coating and curing station is located in the first assembly line;

[0011] The flatbed inkjet printer is located in the second assembly line;

[0012] The wire drawing station is located in the third assembly line;

[0013] Also included is a fourth assembly line serving as a transition assembly line;

[0014] The first, second, third and fourth assembly lines are parallel to each other, and the feeding end and the discharging end of each assembly line are connected by a transmission section. They form a rectangular production line, and parallel line segments are connected between the first and last sides of the rectangle;

[0015] The conveyor section connecting the feeding ends of each assembly line is also connected to the feeding end of the production line;

[0016] There are multiple roller coating and curing stations, which are arranged in sequence along the production flow direction, and adjacent roller coating and curing stations are connected by a transmission unit;

[0017] There are two flatbed inkjet printers, a first flatbed inkjet printer for printing patterns is located in front, and a second flatbed inkjet printer for printing the concave-convex effect layer is located in the back, and a transmission unit is connected between the two.

[0018] The wire drawing station is composed of one or more wood wire drawing machines installed on the plate conveying device;

[0019] The head and tail of each assembly line are connected to the transmission section through a right-angle turning module or a three-way selective turning module;

[0020] The feeding direction and the discharging direction of the right-angle turning module are at right angles, and are used for connecting the top corners of the rectangular shape of the production line;

[0021] The first and second discharging directions of the three-way selective turning module are perpendicular to each other, wherein the first discharging direction is consistent with the feeding direction; it is used for connection at the center position of the production line.

[0022] In actual production, there is one or multiple parallel first assembly lines; there is one or multiple parallel fourth assembly lines. Since there are many curing processes for the sheet material, and there may be before and after pattern printing, and before and after the wire drawing process. When arranging the assembly lines, the first assembly line is outside the second and third assembly lines to facilitate assembly line scheduling. The more fourth assembly lines there are, the lower the scheduling difficulty.

[0023] Through this technical solution, the various components of the production line are formed into a ring or S shape, avoiding the special requirement of occupying a space for a linear assembly line within a limited space.

[0024] The three-way selection turning module includes a base frame, a top plate and two sets of mutually perpendicular transmission belt assemblies;

[0025] A plurality of universal balls are arranged on the surface of the top plate, which form a universal ball matrix;

[0026] The two sets of transmission belt assemblies are connected to the top plate through a lifting device, the surface of the transmission belt assembly in a lowered state is lower than the top surface of the universal ball matrix, and the surface of the transmission belt assembly in a raised state is higher than the top surface of the universal ball matrix;

[0027] Each transmission belt assembly consists of two belts wound around two pulleys respectively; the pulleys are driven by a motor;

[0028] The belt length direction of the first group of transmission belt assemblies is consistent with the direction of the first discharge port; the belt length direction of the second group of transmission belt assemblies is consistent with the direction of the second discharge port; the direction of the first discharge port is consistent with the direction of the feed port, and the direction of the second discharge port is perpendicular to the direction of the feed port;

[0029] A liftable baffle is connected to the direction of the second discharge port, and a travel switch is connected to the head and tail sides of the baffle respectively, and the travel switch is linked to the lifting device of the second group of transmission belt components; in the lowered state, the top edge of the baffle is lower than the height of the path along which the plate travels, and in the raised state, the top edge of the baffle is higher than the height of the path along which the plate travels;

[0030] The lifting device for driving the baffle to lift is linked with the lifting device of the first group of transmission belt components.

[0031] The right-angle turning module comprises a module support and a plurality of conveying rollers, the conveying rollers are rotatably connected to the top surface of the module support, and the conveying rollers are driven to rotate by a driving device; the conveying rollers are parallel to each other and identical, and they constitute a conveying roller array, and the heights of the conveying rollers are the same; gaps are provided between adjacent conveying rollers;

[0032] The two side edges of the top surface of the module bracket are provided with a first surrounding edge and a second surrounding edge, the first surrounding edge is parallel to the rotating axis of the conveying roller, and the second surrounding edge is perpendicular to the rotating axis of the conveying roller; the first surrounding edge and the second surrounding edge form an L shape, and the conveying roller array is within the range surrounded by the two surrounding edges;

[0033] A guide belt assembly is provided in at least two of the gaps;

[0034] The structure of the guide belt assembly includes a belt mounted on a pair of pulleys; the second pulley is connected to the drive motor through a transmission mechanism; the first pulley is close to the second peripheral edge, and the second pulley is far away from the second peripheral edge;

[0035] The top surface of the second belt pulley is above the top surface of the conveying roller array, and the position of the second belt pulley is outside the position of the conveying roller array;

[0036] The rotating shaft of the first pulley is connected to the lifting device; when the lifting device is in a high state, the height of the first pulley is higher than the height of the second pulley; when the lifting device is in a low state, the first pulley is below the top surface of the conveying roller array, and the belt between the two pulleys is below the top surface of the conveying roller array;

[0037] The first and tail sides of the first surrounding edge are respectively connected with a travel switch, and the contact of the travel switch is exposed on the top surface of the conveying roller array; the lifting device is linked with the two travel switches.

[0038] The wire drawing station is composed of a wood wire drawing machine installed on a plate conveying device; it also includes an anti-jump board unit: including a unit bracket, a plate supporting device and a wood wire drawing machine, the plate supporting device is installed on the unit bracket, the wood wire drawing machine is installed on the unit bracket, and the opening on the bottom surface of the wood wire drawing machine housing is above the plate supporting device, and the space between the bottom edge of the wire roller of the wood wire drawing machine and the plate supporting device is a plate passing space;

[0039] The plate support device includes a steel plate and a plurality of universal balls. The surface of the steel plate is provided with through holes corresponding to the universal balls. The bearing seat of the universal balls is on the bottom surface of the steel plate. The outer spherical surface of the universal balls extends out of the top surface of the steel plate from the through holes. The universal balls form a matrix shape, with the first row of universal balls being those close to the plate feeding end.

[0040] A cotton yarn brush strip is installed on the housing of the wood wire drawing machine; the cotton yarn brush strip includes a plurality of cotton yarn ropes, which are all fixed on the same pressure strip to form a yarn curtain shape; the pressure strip is connected to the housing of the wood wire drawing machine; the length direction of the pressure strip is parallel to the axial direction of the wire roller of the wood wire drawing machine; the cotton yarn rope hangs freely, and the bottom end of the cotton yarn rope is on the side of the wood wire drawing machine close to the discharge end; a water trough is provided above the pressure strip, and the top end of the cotton yarn rope hangs in the water trough from the top opening of the water trough;

[0041] The rotation direction of the wire roller of the wood wire drawing machine is from the sheet feeding side through the top surface of the universal ball matrix to the sheet feeding side.

[0042] The wire drawing station is composed of multiple wood wire drawing machines installed on a plate conveying device; it also includes a bracket and a plate feeding roller; each wood wire drawing machine has the same structure, but uses different specifications of wire rollers; each wood wire drawing machine is arranged in sequence along the flow direction of the production line and installed on the bracket; a lifting structure is connected between the wire roller of each wood wire drawing machine and the wire drawing machine body;

[0043] The top surface of the bracket under each wood drawing machine is equipped with multiple parallel plate feeding rollers; a pressing plate device is installed between two adjacent wire drawing machines and behind the last wire drawing machine.

[0044] A plate alignment unit is installed in front of the roller coating and curing station, which includes a unit chassis, a first conveying roller, a blocking roller and a second conveying roller; the plate forward direction is assumed to be forward;

[0045] The first conveying roller and the second roller are respectively connected to the two sides of the unit chassis for rotation end to end;

[0046] The second conveying roller is in front of the first conveying roller;

[0047] There is one or more second conveying rollers in parallel, the second conveying rollers are parallel to the horizontal plane, and the second conveying rollers are perpendicular to both sides of the unit chassis;

[0048] There are a plurality of first conveying rollers parallel to each other; the head end of the first conveying roller is higher than the height of the second conveying roller, and the tail end of the first conveying roller is lower than the height of the second conveying roller; the lower end of the first conveying roller is connected to the first side of the unit chassis; in the projection of the first conveying roller on the horizontal plane, the head end of the first conveying roller is in front of the tail end thereof;

[0049] A plurality of retaining rollers are connected to the first side of the unit chassis, the rotating shafts of the retaining rollers are perpendicular to the horizontal plane, and at least two retaining rollers are connected between adjacent first conveying rollers;

[0050] The first conveying rollers are all connected to the same driving motor;

[0051] The rotation direction of the first conveying roller is that, on the top surface of the first conveying roller, the positive direction of the linear velocity of the first conveying roller is forward.

[0052] An alignment mechanism is also installed in front of the plate inlet of the flatbed inkjet printer; the alignment mechanism includes: a base frame, a conveyor belt, a door frame, a side limit wheel and a travel switch;

[0053] The front and rear ends of the gantry frame are respectively fixed to the two sides of the base frame through support blocks; the gantry frame includes two sliding rods;

[0054] Two slide bars are connected between the two support blocks, and the connection positions of the two slide bars and one support block are on the left and right sides of the support block; a through hole is opened in the middle of the support block; the slide bar close to the board inlet is set as the second slide bar, and the other slide bar is set as the first slide bar;

[0055] A driving motor is fixed in the middle of the two slide bars; a screw rod parallel to the two slide bars is connected between the two slide bars, and the front and rear threads of the screw rod are in opposite directions; the driving motor drives the screw rod to rotate; the front and rear ends of the screw rod are connected to the through holes on the support block through bearings;

[0056] Two limiting wheel connecting strips are slidably connected on the two slide bars; each limiting wheel connecting strip is provided with a threaded hole corresponding to the screw rod; there are a plurality of side limiting wheels, which are divided into two groups, each group of side limiting wheels is connected to a limiting wheel connecting strip, and the rotating shafts of each side limiting wheel are perpendicular to the horizontal plane; the rotating shaft axes of the side limiting wheels in the same group are on the same straight line, and the length direction of the straight line is perpendicular to the length direction of the slide bar;

[0057] The conveyor belt is installed on the bottom frame, and the gap between the bottom surface of the side limiting wheel and the top surface of the conveyor belt is smaller than the thickness of the plate;

[0058] A trigger plate is also rotatably connected to the gantry; the head and tail ends of the trigger plate are rotatably connected to the head and tail ends of the first slide bar; the trigger plate is connected to the contact of a travel switch; under normal conditions, the gap between the bottom edge of the trigger plate and the top surface of the conveyor belt is smaller than the thickness of the plate, and at this time, the travel switch is in a non-triggered state; the drive motor is linked to the travel switch.

[0059] The transmission bodies of the first, second, third and fourth assembly lines include a support, a conveying roller and a driving motor; there are a plurality of identical conveying rollers, which are parallel to each other; the head and tail ends of each conveying roller are rotatably connected to the support, and the driving motor drives the conveying roller through a transmission mechanism, which is characterized in that there is only one driving motor, which is connected to the support;

[0060] It also includes a transmission shaft; the front and rear ends of the transmission shaft are rotatably connected to the bracket; the length of the transmission shaft corresponds to the length of the bracket, the transmission shaft is perpendicular to the conveying rollers, and is below the front end or the rear end of each conveying roller; the transmission shaft is connected to the output shaft of the driving motor through a transmission structure;

[0061] A first annular groove is provided on the outer wall of the head or tail of the conveying roller;

[0062] A plurality of second annular grooves are arranged on the transmission shaft, each second annular groove corresponds to a first annular groove of a conveying roller, and the corresponding first and second annular grooves are connected by an annular belt; each annular belt is twisted into an "8" shape, and the upper and lower parts of the "8" shape are vertical.

[0063] It also includes a plurality of transition pipelines parallel to the fourth pipeline.

[0064] This production line can meet the processing needs of various layered structure plates and improve the space utilization rate of standard factory buildings through the setting of flow paths. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1 Schematic diagram of the production line of this embodiment from a top view;

[0066] In the figure: roller coating and curing station 1, first flatbed inkjet printer 2, second flatbed inkjet printer 3, wire drawing station 4, first assembly line 5, second assembly line 6, third assembly line 7, fourth assembly line 8, right angle turning module 9, three-way selective turning module 10. The arrows indicate the flow direction of the corresponding nodes.

[0067] Figures 2A to 2D This is a schematic diagram of the turning module structure for the tee selection in this example, where:

[0068] Figure 2A It is a top view schematic diagram of the three-way selection turning module (the baffle is in the lowered state);

[0069] Figure 2B It is a schematic diagram of the structure of the transmission belt assembly and the connection position of the lifting cylinder in the three-way selection turning module;

[0070] Figure 2C It is a schematic diagram of the linkage between the travel switch in the three-way selection turning module and the lifting device (lifting cylinder) of the second set of transmission belt components;

[0071] Figure 2D It is a schematic diagram of the linkage between the travel switch in the three-way selection turning module and the lifting device (lifting cylinder) of the first set of transmission belt components;

[0072] In the figure: a base frame 201 in a three-way selective turning module, a top plate 202 in a three-way selective turning module, a universal ball 203 in a three-way selective turning module, a baffle 204 in a three-way selective turning module, a first group of transmission belt components 205 in a three-way selective turning module, a second group of transmission belt components 206 in a three-way selective turning module, a feed port 207 in a three-way selective turning module, a first discharge port 208 in a three-way selective turning module, a second discharge port 209 in a three-way selective turning module, a travel switch 210 in a three-way selective turning module, a lifting cylinder 211 in a three-way selective turning module, a pulley 212 in a three-way selective turning module, a belt 213 in a three-way selective turning module, a through hole 214 on the top plate in a three-way selective turning module, and a three-position five-way solenoid valve 215 in a three-way selective turning module.

[0073] Figures 3A to 3F The diagram is a schematic diagram of the right-angle turn module structure in this example, where:

[0074] Figure 3A It is a top view schematic diagram of the right-angle turn module;

[0075] Figure 3B yes Figure 3A Schematic diagram of the upward angle of view;

[0076] Figure 3C yes Figure 3A Schematic diagram of the top view;

[0077] Figure 3D It is a schematic diagram of the structural principle of the guide belt assembly of the right-angle turning module;

[0078] Figure 3E It is a schematic diagram of the connection structure between the lifting device of the right-angle turning module and the first pulley;

[0079] Figure 3F This is the electrical diagram of the linkage principle between the travel switch and the cylinder of the right-angle turning module;

[0080] In the figure: a module bracket 301 in a right-angle turning module, a conveying roller 302 in a right-angle turning module, a conveying roller array 303 in a right-angle turning module, a gap 304 in a right-angle turning module, a first surrounding edge 305 in a right-angle turning module, a second surrounding edge 306 in a right-angle turning module, a guide belt assembly 307 in a right-angle turning module, a belt 308 in a right-angle turning module, a first pulley 309 in a right-angle turning module, a second pulley 310 in a right-angle turning module, a cylinder 311 in a right-angle turning module, a support block 312 in a right-angle turning module, a cross bar 313 in a right-angle turning module, a top rod 314 in a right-angle turning module, a bearing seat 315 in a right-angle turning module, a bearing 316 in a right-angle turning module, a rotating shaft 317 of the first pulley in the right-angle turning module, a rotating shaft 318 in the right-angle turning module, a belt transmission structure 319 in the right-angle turning module, a driving motor 320 in the right-angle turning module, and a travel switch 321 in the right-angle turning module.

[0081] Figures 4A to 4C This is a schematic diagram of the anti-jump board unit structure of this example, where:

[0082] Figure 4A It is a schematic diagram of the anti-jump board unit from the main perspective;

[0083] Figure 4B It is a partial schematic diagram of the anti-jump board unit from a top view;

[0084] Figure 4C It is a cross-sectional schematic diagram of a cotton yarn brush strip;

[0085] In the figure: a unit bracket 401 in the anti-jumping board unit, a wood wire drawing machine 402 in the anti-jumping board unit, a shell 403 of the wood wire drawing machine in the anti-jumping board unit, an opening 404 on the bottom surface of the shell of the wood wire drawing machine in the anti-jumping board unit, a wire roller 405 in the anti-jumping board unit, a steel plate 406 in the anti-jumping board unit, a universal ball 407 in the anti-jumping board unit, a cotton yarn brush strip 408 in the anti-jumping board unit, a cotton yarn rope 409 in the anti-jumping board unit, a pressure strip 410 in the anti-jumping board unit, a water tank 411 in the anti-jumping board unit, a support roller 412 in the anti-jumping board unit, a fan 413 in the anti-jumping board unit, and a motor 414 in the anti-jumping board unit.

[0086] Figures 5A to 5C This is a schematic diagram of a wire drawing station composed of multiple wire drawing machines in this example, where:

[0087] Figure 5A This is a schematic diagram of a wire drawing machine and its rear pressing plate device from the main perspective in this case;

[0088] Figure 5B is a schematic diagram of the pressure plate device in this case from a top view;

[0089] Figure 5C is a schematic diagram of the lifting mechanism in this case from a left perspective;

[0090] In the figure: the bracket 501 in this case, the plate feeding roller 502 in this case, the wire drawing machine 503 in this case, the pressing plate device 504 in this case, the frame 505 in this case, the grinding nylon plate 506 in this case, the elastic part 507 in this case, the bending edge 508 in this case, the lifting structure 509 in this case, the gate frame 510 in this case, the guide rail 511 in this case, the bearing seat 512 in this case, the bearing 513 in this case, the driving motor 514 of the wire roller in this case, the crossbeam 515 in this case, the column 516 in this case, the slider 517 in this case, the electric push rod 518 in this case, and the vertical notch 519 on the side of the wire drawing machine shell in this case.

[0091] Figures 6A to 6E This is a schematic diagram of the structure of the alignment unit in this example, where:

[0092] Fig. 6A is a schematic diagram of this alignment unit;

[0093] Figure 6B yes Fig. 6A A schematic diagram of the structure of a first conveying roller and a retaining roller from a right perspective;

[0094] Figure 6C yes Fig. 6A A schematic diagram of a first conveying roller and a retaining roller structure from a top view;

[0095] Fig.6D is a schematic diagram of the connection structure between the transmission shaft of the alignment unit and a first conveying roller;

[0096] Fig. 6E yes Fig.6D A schematic diagram of the connection structure between the transmission shaft and a first conveying roller from a right perspective;

[0097] In the figure: a unit chassis 601 in the alignment unit, a first conveying roller 602 in the alignment unit, a blocking roller 603 in the alignment unit, a second conveying roller 604 in the alignment unit, a first side 605 of the unit chassis in the alignment unit, a driving motor 606 in the alignment unit, a transmission shaft 607 in the alignment unit, a wheel transmission structure 608 in the alignment unit, a first annular groove 609 in the alignment unit, a second annular groove 610 in the alignment unit, and an annular belt 611 in the alignment unit.

[0098] Figures 7A to 7E This is a schematic diagram of the alignment mechanism in this example, where:

[0099] Fig. 7A is a schematic diagram of the alignment mechanism of this embodiment;

[0100] Figure 7B is a schematic diagram of the alignment mechanism from a top view;

[0101] Figure 7C It is a schematic diagram of the structure of the limit wheel connecting strip in the alignment mechanism;

[0102] Fig.7D It is a schematic diagram of the connection structure between the trigger plate and the slide rod in the alignment mechanism;

[0103] Fig. 7E It is a schematic diagram of the control principle of the travel switch and the drive motor in the alignment mechanism;

[0104] In the figure: a printer bracket 701, a flatbed inkjet printer 702, an alignment mechanism 703, a base frame 704 in the alignment mechanism, a conveyor belt 705 in the alignment mechanism, a door frame 706 in the alignment mechanism, a side limit wheel 707 in the alignment mechanism, a travel switch 708 in the alignment mechanism, a support block 709 in the alignment mechanism, a slide bar 710 in the alignment mechanism, a through hole 711 in the alignment mechanism, a first slide bar 712 in the alignment mechanism, a second slide bar 713 in the alignment mechanism, a drive motor 714 in the alignment mechanism, a screw rod 715 in the alignment mechanism, a bearing 716 in the alignment mechanism, a limit wheel connecting strip 717 in the alignment mechanism, a threaded hole 718 in the alignment mechanism, a first trigger plate 719 in the alignment mechanism, a second trigger plate 720 in the alignment mechanism, a first travel switch 721 in the alignment mechanism, and a second travel switch 722 in the alignment mechanism.

[0105] Figures 8A to 8H This is the schematic diagram of the transmission main structure in this example, where:

[0106] Fig. 8A Schematic diagram of the structure of the transmission body of this embodiment;

[0107] Figure 8B yes Fig. 8A A schematic diagram of a partial structure from a top view;

[0108] Figure 8C It is a schematic diagram of the structure of the transmission shaft part in the transmission body;

[0109] Fig.8D It is a schematic diagram of the structure of the conveying roller in the transmission body;

[0110] Fig. 8E It is a schematic diagram of the connection structure between the transmission shaft in the transmission body and a conveying roller;

[0111] Figure 8F yes Fig. 8E Schematic diagram of the right perspective;

[0112] Figure 8G It is a schematic diagram of the connection structure principle between the transmission shaft, the slideway and the drive motor in the transmission body;

[0113] Figure 8H So Figure 8G The left viewing direction indicates the schematic diagram of the displacement trajectory of the transmission shaft;

[0114] In the figure: a bracket 801 in a transmission body, a conveying roller 802 in a transmission body, a driving motor 803 in a transmission body, a transmission shaft 804 in a transmission body, a first annular groove 805 in a transmission body, a second annular groove 806 in a transmission body, an annular belt 807 in a transmission body, a bearing 808 in a transmission body, a bearing seat and a slider 809 in a transmission body, a slide groove 810 in a transmission body, a belt transmission structure 811 in a transmission body, a rotating shaft 812 of a driving motor in a transmission body, and an axial displacement trajectory curve 813 of a transmission shaft in a transmission body. DETAILED DESCRIPTION

[0115] The manufacturing method of the 3D printed decorative plate in this example first places the workstations with the same or similar functions and manufacturing equipment on a linear assembly line; then places the assembly lines in parallel; then provides one or more assembly lines without processing equipment as transitional assembly lines; connects the head and the end of each assembly line, and sets a right-angle turn or a "T"-shaped three-way turn at the connection position according to the flow direction; finally, the desired production line is obtained;

[0116] Then, according to the layered structure of the produced boards, the production flow direction is scheduled to carry out board production.

[0117] like Figure 1 ,The production line in this example includes a roller coating and curing station, a flatbed inkjet printer, and a wire drawing station;

[0118] The roller coating and curing station is located in the first assembly line; the flatbed inkjet printer is located in the second assembly line; the wire drawing station is located in the third assembly line; and a fourth assembly line is also included as a transition assembly line. In this example, only one transition assembly line is used. The discharge end of the entire production line is connected to the discharge ends of the four assembly lines. A dust removal station is also included; the dust removal station is located at the feed end of the production line.

[0119] The first, second, third and fourth assembly lines are parallel to each other. The feeding ends and the discharging ends of the four assembly lines are connected by transmission sections. They form a rectangular production line, and parallel line segments are connected between the first and last sides of the rectangle.

[0120] The transmission section can be a plurality of parallel transmission rollers connected to the chassis. The transmission rollers can all be driven to rotate by a motor.

[0121] The overall flow direction of the production line is in the same clockwise direction. The conveyor section connecting the feeding ends of the four production lines is also connected to the feeding end of the production line; in this production line, the position of the feeding end is relatively flexible and can be placed closer to the first station according to production needs.

[0122] There are multiple roller coating and curing stations, which are arranged in sequence along the production flow direction, and adjacent roller coating and curing stations are connected by a transmission unit; the transmission unit can be multiple parallel transmission rollers connected to the bottom frame. The transmission rollers can be driven to rotate by a motor.

[0123] There are two flatbed inkjet printers, a first flatbed inkjet printer for printing patterns is located in front, and a second flatbed inkjet printer for printing the concave-convex effect layer is located in the back, and a transmission unit is connected between the two.

[0124] The wire drawing station is composed of one or more wood wire drawing machines installed on the plate conveying device;

[0125] The heads and tails of the four assembly lines are connected to the transmission section through a right-angle turning module or a three-way selective turning module;

[0126] The feeding direction and the discharging direction of the right-angle turning module are at right angles, and are used for connecting the top corners of the rectangular shape of the production line;

[0127] The first and second discharging directions of the three-way selective turning module are perpendicular to each other, wherein the first discharging direction is consistent with the feeding direction; it is used for connection at the center position of the production line.

[0128] The production flow path of the plate is selected according to the layered structure of the plate to be processed, so that the plate can be processed by the corresponding station. At the same time, the setting of the transition line is used to solve the situation that it is difficult to directly meet the flow requirements of the first to third lines when some plate processing processes require repeated or cross-step processing.

[0129] The roller press used in the roller coating and curing stations can be connected to the line body through a lifting mechanism. When the roller press is lifted, the assembly line where it is located can be used as a transition assembly line.

[0130] The details of this production line are as follows:

[0131] like Figures 2A to 2D The three-way selection turning module includes a bottom frame, a top plate and two sets of mutually perpendicular transmission belt assemblies;

[0132] A plurality of universal balls are arranged on the surface of the top plate, which form a universal ball matrix;

[0133] The two sets of transmission belt assemblies are connected to the top plate through a lifting device, the surface of the transmission belt assembly in a lowered state is lower than the top surface of the universal ball matrix, and the surface of the transmission belt assembly in a raised state is higher than the top surface of the universal ball matrix;

[0134] Each transmission belt assembly consists of two belts wound around two pulleys respectively; the pulleys are driven by a motor;

[0135] The belt length direction of the first group of transmission belt assemblies is consistent with the direction of the first discharge port; the belt length direction of the second group of transmission belt assemblies is consistent with the direction of the second discharge port; the direction of the first discharge port is consistent with the direction of the feed port, and the direction of the second discharge port is perpendicular to the direction of the feed port;

[0136] A liftable baffle is connected to the direction of the second discharge port, and a travel switch is connected to the head and tail sides of the baffle respectively, and the travel switch is linked to the lifting device of the second group of transmission belt components; in the lowered state, the top edge of the baffle is lower than the height of the path along which the plate travels, and in the raised state, the top edge of the baffle is higher than the height of the path along which the plate travels;

[0137] The lifting device for driving the baffle to lift is linked with the lifting device of the first group of transmission belt components.

[0138] This module can be used as a separate component for the construction of a production line. After the sheet enters the universal ball matrix from the feed port: if it faces the first outlet (the flow direction of the feed port and the first outlet is on the same straight line), the baffle is in a low position, the first drive belt assembly is in a high position, and the sheet flow direction is a straight line.

[0139] If the plate needs to be diverted to the second discharge port, the baffle is in a high position and the first transmission belt assembly is in a low position; the plate is first located on the surface of the universal wheel matrix until the plate triggers the travel switch, the second transmission belt assembly rises, and drives the plate to the second discharge port until the plate leaves the travel switch, the second transmission belt assembly drops and resets.

[0140] In this example:

[0141] Here, the structure in which the motor drives the rotating shaft to rotate and the motor drives the pulley to rotate is relatively common in the prior art, such as a roller motor or a structure in which the motor drives the rotating shaft to rotate through a sprocket structure. In this example, the motor that drives the pulley to rotate can be directly installed on the top of the piston rod of the jacking cylinder, and the pulley can be directly connected to the output shaft of the motor.

[0142] The compressed air pipe at the production site is controlled by a three-position five-way solenoid valve to inflate / deflate the two chambers separated by the piston in the lifting cylinder.

[0143] Figure 2B In order to make the structure clear, the baffle is in the raised state, and the first set of transmission belt components is also in the raised state. Under normal action logic, when the baffle is in the raised state, the first set of transmission belt components is in the lowered state.

[0144] like Figures 3A to 3F The right-angle turning module includes a module bracket and a plurality of conveying rollers. The conveying rollers are rotatably connected to the top surface of the module bracket, and the rotation of the conveying rollers is driven by a driving device thereof, such as a motor.

[0145] The conveying rollers are parallel to each other and identical to each other, forming a conveying roller array, and each conveying roller has the same height; there is a gap between adjacent conveying rollers;

[0146] The two side edges of the top surface of the module bracket are provided with a first surrounding edge and a second surrounding edge, the first surrounding edge is parallel to the rotating axis of the conveying roller, and the second surrounding edge is perpendicular to the rotating axis of the conveying roller; the first surrounding edge and the second surrounding edge form an L shape, and the conveying roller array is within the range surrounded by the two surrounding edges;

[0147] A guide belt assembly is provided in at least two of the gaps;

[0148] The structure of the guide belt assembly includes a belt mounted on a pair of pulleys; the second pulley is connected to the drive motor through a transmission mechanism; the first pulley is close to the second peripheral edge, and the second pulley is far away from the second peripheral edge;

[0149] The top surface of the second belt pulley is above the top surface of the conveying roller array, and the position of the second belt pulley is outside the position of the conveying roller array;

[0150] The rotating shaft of the first pulley is connected to the lifting device; when the lifting device is in a high state, the height of the first pulley is higher than the height of the second pulley; when the lifting device is in a low state, the first pulley is below the top surface of the conveying roller array, and the belt between the two pulleys is below the top surface of the conveying roller array;

[0151] The first and tail sides of the first surrounding edge are respectively connected with a travel switch, and the contact of the travel switch is exposed on the top surface of the conveying roller array; the lifting device is linked with the two travel switches.

[0152] When in use, the top surface of the conveying roller rotates in a direction toward the first surrounding edge, and the top surface of the second pulley rotates in a direction away from the second surrounding edge.

[0153] When the plate completely enters the roller array from the direction perpendicular to the conveying roller, a travel switch is triggered when the plate reaches the first edge position, and the lifting device is lifted, and the belt on the guide belt assembly drives the plate to move in the direction parallel to the conveying roller. In the above process, the second travel switch is triggered at the same time. Until the plate leaves, both travel switches are reset, and the lifting device falls back.

[0154] This module can be used as an independent functional unit in the production line. The top surface of the conveyor roller array is equal to the other transmission surfaces of the production line. The top surface of the second pulley is above the top surface of the conveyor roller array, so that the lower end of the plate is above the transmission plane of the production line, so that the plate can flow smoothly into the production line.

[0155] In this example:

[0156] like Figure 3D , 3E The lifting device is a cylinder, the cylinder body of the cylinder is rotatably connected to the support block, the support block is connected to the module bracket, and the piston rod of the cylinder is rotatably connected to the first pulley. It also includes a lifting bracket, which is composed of multiple (two in this example) parallel push rods vertically connected to the same crossbar; the top of each push rod is connected to a bearing seat, and the bearing in the bearing seat is connected to a corresponding shaft of the first pulley;

[0157] The crossbar is connected to the piston rod of the cylinder. Under this structure, the lifting action of each guide belt assembly can be completed by using one cylinder.

[0158] The second pulleys of each guide belt assembly are connected to the same rotating shaft, and the head and tail ends of the rotating shaft are respectively connected to the module bracket through bearings and bearing seat structures; the rotating shaft is connected to the output shaft of the driving motor through a belt transmission structure.

[0159] like Figures 3A to 3CThe second pulleys of each guide belt assembly are connected to the same rotating shaft, and the first and last ends of the rotating shaft are connected to the module bracket through bearings and bearing seat structures respectively; the rotating shaft is connected to the output shaft of the driving motor through a belt transmission structure. A guide belt assembly is provided in each gap, which is suitable for plates of the same specifications. This example has two sets of guide belt assemblies.

[0160] like Figure 3F Two parallel-connected travel switches are used to simultaneously control the action of a three-position five-way solenoid valve, and the three-position five-way solenoid valve controls the compressed air pipe on the production site to fill / deflate the two chambers separated by the piston in the lifting cylinder.

[0161] Description of the wire drawing process: The above-mentioned decorative board with real wood texture effect can be made from decorative boards of materials such as PVC. The production method is to spray the surface of the decorative board of materials such as PVC with a wear-resistant coating having good wear resistance to form the required texture plane pattern, and then use a wood wire drawing machine to wire draw the board surface, so that the surface of the position where the wear-resistant coating is not applied is scraped more, and the surface of the position where the wear-resistant coating is applied is scraped less, imitating the real wood texture effect.

[0162] In one case of this example, the wire drawing station is composed of a wood wire drawing machine installed on a plate conveying device, and also includes an anti-jump plate unit.

[0163] like Figure 4A and 4B The anti-jumping plate unit includes a unit bracket, a plate supporting device and a wood wire drawing machine. The plate supporting device is installed on the unit bracket, and the wood wire drawing machine is installed on the unit bracket. The opening of the bottom surface of the wood wire drawing machine housing is above the plate supporting device. There is a plate passing space between the bottom edge of the wire roller of the wood wire drawing machine and the plate supporting device.

[0164] The plate support device includes a steel plate and a plurality of universal balls (universal balls are also called bull's eye bearings). The steel plate surface is provided with through holes corresponding to the universal balls. The bearing seat of the universal balls is on the bottom surface of the steel plate, and the outer spherical surface of the universal balls extends from the through holes to the top surface of the steel plate. Each universal ball forms a matrix shape, with the first row of universal balls close to the plate feed end. The decorative plate is supported as a whole through the universal ball matrix, making the supporting force more uniform. The instantaneous impact from the wire roller is not easy to cause the plate to deform, thereby avoiding the rebound caused by the deformation recovery.

[0165] The shell of the wood drawing machine is equipped with a cotton brush strip; Figure 4CThe cotton yarn brush strip includes multiple cotton yarn ropes, which are all fixed on the same layering strip to form a yarn curtain shape; the layering strip is connected to the housing of the wood wire drawing machine; the length direction of the layering strip is parallel to the axial direction of the wire roller of the wood wire drawing machine; the cotton yarn rope hangs freely, and the bottom end of the cotton yarn rope is on the side of the wood wire drawing machine close to the discharge end; a water tank is provided above the layering strip, and the top end of the cotton yarn rope hangs in the water tank from the top opening of the water tank; the cotton yarn rope forms a yarn curtain, and the cotton yarn absorbs water from the water tank and then hangs down. When the top surface of the plate passes through the yarn curtain, it is pressed by the yarn curtain. At this time, although the surface of the plate is wet, it can evaporate quickly on the production line body and will not bring negative impact to the subsequent processes.

[0166] The rotation direction of the wire roller of the wood wire drawing machine is from the feeding side of the plate through the top surface of the universal ball matrix to the feeding side of the plate. Under this structure, the rotation of the wire roller is used as the power to drive the plate forward, which solves the problem that the universal ball itself has no power. Due to the high rotation speed of the wire roller, the actual forward speed of the plate is slow, and coupled with the friction caused by the gauze curtain, there is a large speed difference between the wire roller and the plate, which does not affect the wire drawing effect.

[0167] A support roller is provided on the discharging side of the steel plate. The support roller is connected to the unit bracket. The height of the top edge of the support roller is consistent with the height of the top surface of the universal ball matrix.

[0168] A fan with an air outlet facing downward is arranged above the rear of the support roller. The power of each fan is about 3 watts, which is used to further blow away the moisture on the surface of the plate. In this example, another support roller is arranged behind the fan.

[0169] The bottom of the unit bracket can also be connected to a height-adjustable support foot, which has a very simple structure, that is, a foot with a bolt, and a corresponding screw hole is opened at the bottom of the unit bracket, and the bolt is screwed into the screw hole. Here, two nuts are also connected to the bolt, and the nuts are tightened on the upper and lower sides of the screw hole for fastening.

[0170] In the anti-jump board unit of this example, under normal circumstances, the sheet enters the third assembly line where the wire drawing station is located to carry out the wire drawing operation. In order to use the third assembly line as a transition assembly line in special circumstances, the entire wood wire drawing machine can also be connected to the unit bracket through a lifting structure. When the sheet that does not require the wire drawing process passes through, the wire drawing machine acts on the sheet. The lifting structure is relatively simple, and can be a gantry suspended from the unit bracket, or a lifting cylinder connected to the unit bracket.

[0171] In another case of this example, the wire drawing station is composed of a plurality of wood wire drawing machines installed on a plate conveying device, such as Figures 5A to 5C , also includes a bracket, a plate feeding roller and a wire drawing machine, the wire drawing machine is a wood wire drawing machine; the plate feeding roller is driven to rotate by its driving device, such as a motor connected by a belt transmission structure.

[0172] There are multiple wire drawing machines, each with the same structure and different wire roller specifications; each wire drawing machine is arranged in sequence along the flow direction of the production line and installed on a bracket; a lifting structure is connected between the wire roller of each wire drawing machine and the body of the wire drawing machine;

[0173] The top surface of the bracket under each wire drawing machine is equipped with multiple parallel plate feeding rollers;

[0174] According to the requirements of the processed plate, wire rollers of different specifications can be started, and the wire rollers are dropped by the lifting structure to perform wire drawing operations on the passing plates.

[0175] It is also possible to start wire rollers of multiple specifications at the same time to perform multiple wire drawing processes on the same plate to achieve the desired wire drawing effect.

[0176] Through the combination of one or more wire rollers, a variety of wire drawing effects can be achieved with fewer wire rollers.

[0177] A pressing plate device is installed between two adjacent wire drawing machines and behind the last wire drawing machine;

[0178] Since the sheet will bounce during the wire drawing process, affecting the subsequent process, a pressure plate device is installed on the production line to avoid bouncing.

[0179] like Figure 5B The structure of the plate pressing device can be: a plurality of parallel plate feeding rollers are mounted on the bracket, and these plate feeding rollers rotate under the driving of the driving device; the brackets at the head and tail ends of the plate feeding roller are respectively connected with relative frames, the head and tail sides of a wear-resistant nylon plate are respectively in a frame, and an elastic part (such as a compression spring or a leaf spring) is connected between the inner side of the top edge of the frame and the top surface of the wear-resistant nylon plate; the left and right sides of the bottom surface of the wear-resistant nylon plate are provided with upward bending edges, and the cross-section of the bending edge is an arc shape. The wear-resistant nylon plate is pressed on the surface of the plate feeding roller by the elastic part. Due to the wear-resistant characteristics of the wear-resistant nylon plate and the smooth surface of the plate feeding roller (due to the properties of wood or other plates, the hardness of the plates is not high, and the outer wall of the plate feeding roller is made of smooth stainless steel to avoid scratching the plates), the nylon plate has almost no friction loss, and the nylon plate is limited in its range of motion by the frame. The bending edges on the left and right sides of the nylon plate facilitate the plates to enter and leave the plate pressing device.

[0180] Here is a lifting structure, such as Figure 5A and 5C , specifically including: a door-shaped frame and a guide rail; the bottoms of the two uprights of the door-shaped frame are connected to a bearing seat, and both ends of the rotating shaft of the wire roller are connected in the bearing seat through bearings; the driving motor of the wire roller is connected to the crossbeam of the door-shaped frame, and the output shaft of the driving motor is connected to the rotating shaft of the wire roller through a sprocket transmission structure;

[0181] The guide rails are located at both ends of the wire drawing machine.

[0182] Vertical guide rails are provided at both ends of the bracket; sliders are connected to the columns at both ends of the door-shaped frame, and the two sliders are slidably connected to one guide rail;

[0183] An electric push rod is connected to the middle position of the top of the main body of the wire drawing machine, a telescopic rod of the electric push rod is connected to the middle part of the crossbeam of the door-shaped frame, and a base of the electric push rod is connected to the main body of the wire drawing machine.

[0184] Usually, three wire drawing machines (three types of wire rollers) can meet the realization of most wire drawing effects.

[0185] In this example, the main body of the guide rail is a rectangular parallelepiped structure, and the two sides of the main body of the guide rail are the tracks of the guide rail. The corresponding end column is also composed of two mirror-image structure sub-columns, and sliders are installed on the opposite sides of the two sub-columns. The two sliders are in the tracks on both sides of a conductor body. Under this structure, the lifting stability is higher.

[0186] An electric push rod is connected to the middle of the top of the main body of the wire drawing machine. The telescopic rod of the electric push rod is connected to the middle of the crossbeam of the door-shaped frame. The base of the electric push rod is connected to the main body of the wire drawing machine.

[0187] A vertical notch is formed on the side of the shell of the wire drawing machine body, and the rotating shaft of the wire roller extends out of the body through the notch and rises / falls along the vertical notch.

[0188] A sheet alignment unit is installed before the roller coating and curing station, such as Figures 6A to 6C The plate alignment unit comprises a unit chassis, a first conveying roller, a blocking roller and a second conveying roller; the plate moving direction is assumed to be forward;

[0189] The first conveying roller and the second roller are respectively connected to the two sides of the unit chassis for rotation end to end;

[0190] The second conveying roller is in front of the first conveying roller;

[0191] There is one or more second conveying rollers in parallel, the second conveying rollers are parallel to the horizontal plane, and the second conveying rollers are perpendicular to both sides of the unit chassis;

[0192] There are a plurality of first conveying rollers parallel to each other; the head end of the first conveying roller is slightly higher (not more than 5 mm) than the height of the second conveying roller, and the tail end of the first conveying roller is slightly lower (not more than 5 mm) than the height of the second conveying roller; the lower end of the first conveying roller is connected to the first side of the unit chassis; in the projection of the first conveying roller on the horizontal plane, the head end of the first conveying roller is in front of the tail end thereof (the position difference between the two is 10-30 mm);

[0193] A plurality of retaining rollers are connected to the first side of the unit chassis, the rotating shafts of the retaining rollers are perpendicular to the horizontal plane, and at least two retaining rollers (two in this example) are connected between adjacent first conveying rollers;

[0194] The first conveying rollers are all connected to the same driving motor;

[0195] The rotation direction of the first conveying roller is that, on the top surface of the first conveying roller, the positive direction of the linear velocity of the first conveying roller is forward.

[0196] This alignment unit can be installed as an independent unit between the production line and the operating device of the corresponding process unit. Through the specially designed first conveying roller tilting obliquely forward and the stop roller, the plate moves on the first conveying roller as follows: once the plate enters the range of the first conveying roller, the plate as a whole slides to the side where the stop roller is located, and is aligned by the stop roller. Then, the roller has a left and right force tilted forward, and the plate further leans against the stop roller. When the plate enters the second conveying roller, the plate is in a state of facing the entrance of the next process.

[0197] In this example, if Fig.6D , 6E The connection mechanism between the first conveying roller and the driving motor includes a transmission shaft; the head and tail ends of the transmission shaft are rotatably connected to the unit chassis and are located below the first conveying roller; the length of the transmission shaft is consistent with the forward direction of the plate; the transmission shaft is connected to the output shaft of the driving motor through a sprocket transmission structure;

[0198] A first annular groove is provided on the outer wall of the head of the first conveying roller; a plurality of second annular grooves are provided on the transmission shaft, each second annular groove corresponds to a first annular groove of the first conveying roller, and the corresponding first and second annular grooves are connected by an annular belt; each annular belt is twisted into an "8" shape;

[0199] The base of the driving motor is fixed to the unit bottom frame, and the rotating shaft of the driving motor is parallel to the transmission shaft.

[0200] Since the first conveying roller is oriented obliquely upward, it is not easy to adjust the optimal direction using the traditional structure. However, the annular belt structure is flexible and elastic, and its driving direction is "adaptive", which is simple and practical for the transmission of the first conveying roller. At the same time, since the weight of the plate is light, the power of the motor and the transmission structure required is not large, and this transmission structure can fully meet the driving requirements.

[0201] The sprocket drive has the highest efficiency. If other obstacles occur, the endless belt can slide between the two grooves (belt slippage), thus avoiding safety accidents.

[0202] During implementation, the sprocket transmission position of the driving motor corresponds to the middle position of the transmission shaft. Under this structure, the motor applies force to the middle position of the transmission shaft, and the transmission effect is better.

[0203] The outer diameters of the transmission shaft and the first conveying roller are the same. Under this structure, the contact area between the endless belt and the two is closest, and the overall friction force is the most equal. At the same time, it is also helpful to calculate the transmission ratio of the motor-driven transmission shaft.

[0204] In specific implementation, the endless belt may be made of an ageing-resistant silicon-based elastic rubber ring, usually with a cross-sectional diameter of 3 to 5 mm.

[0205] like Figures 7A to 7E , an alignment mechanism is also installed in front of the plate inlet of the flatbed inkjet printer; the alignment mechanism includes: a base frame, a conveyor belt, a door frame, a side limit wheel and a travel switch;

[0206] The front and rear ends of the gantry frame are respectively fixed to the two sides of the base frame through support blocks; the gantry frame includes two sliding rods;

[0207] Two slide bars are connected between the two support blocks, and the connection positions of the two slide bars and one support block are on the left and right sides of the support block; a through hole is opened in the middle of the support block; the slide bar close to the board inlet is set as the second slide bar, and the other slide bar is set as the first slide bar;

[0208] A driving motor is fixed in the middle of the two slide bars; a screw rod parallel to the two slide bars is connected between the two slide bars, and the front and rear threads of the screw rod are in opposite directions; the driving motor drives the screw rod to rotate; the front and rear ends of the screw rod are connected to the through holes on the support block through bearings;

[0209] Two limiting wheel connecting strips are slidably connected on the two slide bars; each limiting wheel connecting strip is provided with a threaded hole corresponding to the screw rod; there are a plurality of side limiting wheels, which are divided into two groups, each group of side limiting wheels is connected to a limiting wheel connecting strip, and the rotating shafts of each side limiting wheel are perpendicular to the horizontal plane; the rotating shaft axes of the side limiting wheels in the same group are on the same straight line, and the length direction of the straight line is perpendicular to the length direction of the slide bar;

[0210] The conveyor belt is installed on the bottom frame, and the gap between the bottom surface of the side limiting wheel and the top surface of the conveyor belt is smaller than the thickness of the plate;

[0211] A trigger plate is also rotatably connected to the gantry; the head and tail ends of the trigger plate are rotatably connected to the head and tail ends of the first slide bar; the trigger plate is connected to the contact of a travel switch; under normal conditions, the gap between the bottom edge of the trigger plate and the top surface of the conveyor belt is smaller than the thickness of the plate, and at this time, the travel switch is in a non-triggered state; the drive motor is linked to the travel switch.

[0212] The principle of this assembly line unit is to install an alignment mechanism at the front end of an existing flatbed printer. Since the trigger plate spans the surface of the conveyor belt, when a plate comes over, the travel switch is triggered and the motor drives the screw to rotate. Since the threads of the front and rear parts of the screw are opposite, after the screw rotates, the movement directions of the two limit wheel connecting strips are opposite, that is, the two sets of side limit wheels are approaching or moving away at the same time.

[0213] Since the motor takes a long time to rotate, the plate enters the range of the two sets of side limit wheels until it leaves. In most cases, the side limit wheels are in the process of approaching, and the plate is corrected while moving forward until it leaves the range of the side limit wheels. It is necessary to preset the number of revolutions of the motor in one action (controlled by a counting relay) and match the width of the plate so that before the plate leaves the range of the side limit wheels, the motor completes one action, that is, the spacing between the two sets of side limit wheels corresponds to the width of the plate, and resets.

[0214] like Fig.7D , the trigger plate connected to the first slide bar is the first trigger plate, and the travel switch connected thereto is the first travel switch; a support rod is fixedly connected to the lower side of the (first) slide bar, and the end of the support rod is rotatably connected to the side of the top edge of the first trigger plate. The body of the first travel switch is fixed on the slide bar (the actual position is close to the middle of the slide bar, and this position is far away from the sliding path of the limit wheel connecting strip).

[0215] It also includes a second trigger plate, which is rotatably connected to the head and tail ends of the second slide bar, and the second trigger plate is connected to the contact of the second travel switch; under normal conditions, the gap between the bottom edge of the second trigger plate and the top surface of the conveyor belt is smaller than the thickness of the plate, and at this time, the second travel switch is in a non-trigger state; the drive motor is linked to the first and second travel switches.

[0216] This structure is suitable for plates with longer lengths. The motor will not reset until the plate completely leaves the second trigger plate, thus avoiding incomplete deviation correction during the transmission process.

[0217] like Figures 8A to 8H The transmission bodies of the first, second, third and fourth assembly lines include a bracket, a conveying roller and a driving motor; there are a plurality of identical conveying rollers, which are parallel to each other; the head and tail ends of each conveying roller are rotatably connected to the bracket, and the driving motor drives the conveying roller through a transmission mechanism, which is characterized in that there is one driving motor, which is connected to the bracket;

[0218] It also includes a transmission shaft; the front and rear ends of the transmission shaft are rotatably connected to the bracket; the length of the transmission shaft corresponds to the length of the bracket, the transmission shaft is perpendicular to the conveying rollers, and is below the front end or the rear end of each conveying roller; the transmission shaft is connected to the output shaft of the driving motor through a transmission structure;

[0219] A first annular groove is provided on the outer wall of the head or tail of the conveying roller;

[0220] Further references Figures 8B to 8F A plurality of second annular grooves are provided on the transmission shaft, each second annular groove corresponds to a first annular groove of a conveying roller, and the corresponding first and second annular grooves are connected by an annular belt; each annular belt is twisted into an "8" shape, and the upper and lower parts of the "8" shape are vertical.

[0221] Figure 8B In the figure, a group of first and second annular grooves with an endless belt and another two groups of first and second annular grooves without an endless belt are indicated.

[0222] like Figure 8G , 8H Since the space structure of the bracket is large enough, the drive motor, chute, etc. can be conveniently connected and arranged on the bracket below the conveying roller. Figure 8G , 8H Only instructions and descriptions are given for the transmission structure.

[0223] The output shaft of the driving motor is connected to the transmission shaft through a belt transmission structure (the structure is a traditional belt transmission structure, and the rotating shafts of the driving and driven wheels are parallel);

[0224] The connecting structure between the transmission shaft and the bracket includes: a bearing, a bearing seat and a slide groove;

[0225] The first and second ends of the transmission shaft are respectively connected to a bearing; the slideway is fixed to the bracket, a sliding block corresponding to the slideway is provided on the bearing seat, and the bearing is connected to the bearing seat;

[0226] The shape of the slide groove is an arc shape, and the center of the arc is on the axis of the output shaft of the driving motor.

[0227] Under this structure, the transmission shaft tends to fall along the arc chute due to its own gravity. Under the action of the arc chute, the distance between the transmission shaft and the drive motor is fixed. When the transmission shaft falls a small distance, the ring belt becomes more and more tense, and the force between the transmission shaft and the conveyor roller increases. This structure is particularly suitable for the change of the length of the ring belt caused by temperature changes and the change of the length of the ring belt caused by aging.

[0228] In order to cope with extreme situations, it can be further improved by hanging heavy objects on the drive shaft.

[0229] The position of the driving motor corresponds to the middle position of the transmission shaft. Under this structure, the motor applies force to the middle position of the transmission shaft, and the transmission effect is better.

[0230] The outer diameters of the transmission shaft and the conveyor roller are the same. Under this structure, the contact area between the endless belt and the two is closest, and the overall friction force is the most equal. At the same time, it is also helpful to calculate the transmission ratio of the motor-driven transmission shaft.

[0231] In specific implementation, the endless belt may be made of an aging-resistant silicone rubber ring, usually with a cross-sectional diameter of 3 to 5 mm.

[0232] Belt drive is safer than gear drive or sprocket drive.

Claims

1. A method for manufacturing a 3D printed decorative plate, characterized in that First, place the workstations with the same or similar functions and manufacturing equipment on a straight line; then place the various lines in parallel; then provide one or more lines without processing equipment as transition lines; connect the head and the end of each line, and set a right-angle turn or a "T"-shaped three-way turn at the connection position according to the flow direction; finally, get the required production line; Then, according to the layered structure of the produced board, the production flow direction is scheduled to produce the board; The production line includes a roller coating and curing station, a flatbed inkjet printer, and is characterized in that it also includes a wire drawing station; The roller coating and curing station is located in the first assembly line; The flatbed inkjet printer is located in the second assembly line; The wire drawing station is located in the third assembly line; Also included is a fourth assembly line serving as a transition assembly line; The first, second, third and fourth assembly lines are parallel to each other, and the feeding end and the discharging end of each assembly line are connected by a transmission section. They form a rectangular production line, and parallel line segments are connected between the first and last sides of the rectangle; The conveyor section connecting the feeding ends of each assembly line is also connected to the feeding end of the production line; There are multiple roller coating and curing stations, which are arranged in sequence along the production flow direction, and adjacent roller coating and curing stations are connected by a transmission unit; There are two flatbed inkjet printers, a first flatbed inkjet printer for printing patterns is located in front, and a second flatbed inkjet printer for printing the concave-convex effect layer is located in the back, and a transmission unit is connected between the two. The wire drawing station is composed of one or more wood wire drawing machines installed on the plate conveying device; The head and tail of each assembly line are connected to the transmission section through a right-angle turning module or a three-way selective turning module; The feeding direction and the discharging direction of the right-angle turning module are at right angles, and are used for connecting the top corners of the rectangular shape of the production line; The first and second discharging directions of the three-way selective turning module are perpendicular to each other, wherein the first discharging direction is consistent with the feeding direction; it is used for connection at the center of the production line; The three-way selection turning module includes a base frame, a top plate and two sets of mutually perpendicular transmission belt assemblies; A plurality of universal balls are arranged on the surface of the top plate, which form a universal ball matrix; The two sets of transmission belt assemblies are connected to the top plate through a lifting device, the surface of the transmission belt assembly in a lowered state is lower than the top surface of the universal ball matrix, and the surface of the transmission belt assembly in a raised state is higher than the top surface of the universal ball matrix; Each transmission belt assembly consists of two belts wound around two pulleys respectively; the pulleys are driven by a motor; The belt length direction of the first group of transmission belt assemblies is consistent with the direction of the first discharge port; the belt length direction of the second group of transmission belt assemblies is consistent with the direction of the second discharge port; the direction of the first discharge port is consistent with the direction of the feed port, and the direction of the second discharge port is perpendicular to the direction of the feed port; A liftable baffle is connected to the direction of the second discharge port, and a travel switch is connected to the head and tail sides of the baffle respectively, and the travel switch is linked to the lifting device of the second group of transmission belt components; in the lowered state, the top edge of the baffle is lower than the height of the path along which the plate travels, and in the raised state, the top edge of the baffle is higher than the height of the path along which the plate travels; The lifting device for driving the baffle to lift is linked with the lifting device of the first set of transmission belt assemblies; The right-angle turning module comprises a module support and a plurality of conveying rollers, the conveying rollers are rotatably connected to the top surface of the module support, and the conveying rollers are driven to rotate by a driving device; the conveying rollers are parallel to each other and identical, and they constitute a conveying roller array, and the heights of the conveying rollers are the same; gaps are provided between adjacent conveying rollers; The two side edges of the top surface of the module bracket are provided with a first surrounding edge and a second surrounding edge, the first surrounding edge is parallel to the rotating axis of the conveying roller, and the second surrounding edge is perpendicular to the rotating axis of the conveying roller; the first surrounding edge and the second surrounding edge form an L shape, and the conveying roller array is within the range surrounded by the two surrounding edges; A guide belt assembly is provided in at least two of the gaps; The structure of the guide belt assembly includes a belt mounted on a pair of pulleys; the second pulley is connected to the drive motor through a transmission mechanism; the first pulley is close to the second peripheral edge, and the second pulley is far away from the second peripheral edge; The top surface of the second belt pulley is above the top surface of the conveying roller array, and the position of the second belt pulley is outside the position of the conveying roller array; The rotating shaft of the first pulley is connected to the lifting device; when the lifting device is in a high state, the height of the first pulley is higher than the height of the second pulley; when the lifting device is in a low state, the first pulley is below the top surface of the conveying roller array, and the belt between the two pulleys is below the top surface of the conveying roller array; The first and tail sides of the first surrounding edge are respectively connected with a travel switch, and the contact of the travel switch is exposed on the top surface of the conveying roller array; the lifting device is linked with the two travel switches.

2. The manufacturing method according to claim 1, characterized in that The wire drawing station is composed of a wood wire drawing machine installed on a plate conveying device; it also includes an anti-jump board unit: including a unit bracket, a plate supporting device and a wood wire drawing machine, the plate supporting device is installed on the unit bracket, the wood wire drawing machine is installed on the unit bracket, and the opening on the bottom surface of the wood wire drawing machine housing is above the plate supporting device, and the space between the bottom edge of the wire roller of the wood wire drawing machine and the plate supporting device is a plate passing space; The plate support device includes a steel plate and a plurality of universal balls. The surface of the steel plate is provided with through holes corresponding to the universal balls. The bearing seat of the universal balls is on the bottom surface of the steel plate. The outer spherical surface of the universal balls extends out of the top surface of the steel plate from the through holes. The universal balls form a matrix shape, with the first row of universal balls being those close to the plate feeding end. A cotton yarn brush strip is installed on the housing of the wood wire drawing machine; the cotton yarn brush strip includes a plurality of cotton yarn ropes, which are all fixed on the same pressure strip to form a yarn curtain shape; the pressure strip is connected to the housing of the wood wire drawing machine; the length direction of the pressure strip is parallel to the axial direction of the wire roller of the wood wire drawing machine; the cotton yarn rope hangs freely, and the bottom end of the cotton yarn rope is on the side of the wood wire drawing machine close to the discharge end; a water trough is provided above the pressure strip, and the top end of the cotton yarn rope hangs in the water trough from the top opening of the water trough; The rotation direction of the wire roller of the wood wire drawing machine is from the sheet feeding side through the top surface of the universal ball matrix to the sheet feeding side.

3. The manufacturing method according to claim 1, characterized in that The wire drawing station is composed of multiple wood wire drawing machines installed on a plate conveying device; it also includes a bracket and a plate feeding roller; each wood wire drawing machine has the same structure, but uses different specifications of wire rollers; each wood wire drawing machine is arranged in sequence along the flow direction of the production line and installed on the bracket; a lifting structure is connected between the wire roller of each wood wire drawing machine and the wire drawing machine body; The top surface of the bracket under each wood drawing machine is equipped with multiple parallel plate feeding rollers; a pressing plate device is installed between two adjacent wire drawing machines and behind the last wire drawing machine.

4. The manufacturing method according to claim 1, characterized in that A plate alignment unit is installed in front of the roller coating and curing station, which includes a unit chassis, a first conveying roller, a blocking roller and a second conveying roller; the plate forward direction is assumed to be forward; The first conveying roller and the second roller are respectively connected to the two sides of the unit chassis for rotation end to end; The second conveying roller is in front of the first conveying roller; There is one or more second conveying rollers in parallel, the second conveying rollers are parallel to the horizontal plane, and the second conveying rollers are perpendicular to both sides of the unit chassis; There are a plurality of first conveying rollers parallel to each other; the head end of the first conveying roller is higher than the height of the second conveying roller, and the tail end of the first conveying roller is lower than the height of the second conveying roller; the lower end of the first conveying roller is connected to the first side of the unit chassis; in the projection of the first conveying roller on the horizontal plane, the head end of the first conveying roller is in front of the tail end thereof; A plurality of retaining rollers are connected to the first side of the unit chassis, the rotating shafts of the retaining rollers are perpendicular to the horizontal plane, and at least two retaining rollers are connected between adjacent first conveying rollers; The first conveying rollers are all connected to the same driving motor; The rotation direction of the first conveying roller is that, on the top surface of the first conveying roller, the positive direction of the linear velocity of the first conveying roller is forward.

5. The manufacturing method according to claim 1, characterized in that An alignment mechanism is also installed in front of the plate inlet of the flatbed inkjet printer; the alignment mechanism includes: a base frame, a conveyor belt, a door frame, a side limit wheel and a travel switch; The front and rear ends of the gantry frame are respectively fixed to the two sides of the base frame through support blocks; the gantry frame includes two sliding rods; Two slide bars are connected between the two support blocks, and the connection positions of the two slide bars and one support block are on the left and right sides of the support block; a through hole is opened in the middle of the support block; the slide bar close to the board inlet is set as the second slide bar, and the other slide bar is set as the first slide bar; A driving motor is fixed in the middle of the two slide bars; a screw rod parallel to the two slide bars is connected between the two slide bars, and the front and rear threads of the screw rod are in opposite directions; the driving motor drives the screw rod to rotate; the front and rear ends of the screw rod are connected to the through holes on the support block through bearings; Two limiting wheel connecting strips are slidably connected on the two slide bars; each limiting wheel connecting strip is provided with a threaded hole corresponding to the screw rod; there are a plurality of side limiting wheels, which are divided into two groups, each group of side limiting wheels is connected to a limiting wheel connecting strip, and the rotating shafts of each side limiting wheel are perpendicular to the horizontal plane; the rotating shaft axes of the side limiting wheels in the same group are on the same straight line, and the length direction of the straight line is perpendicular to the length direction of the slide bar; The conveyor belt is installed on the bottom frame, and the gap between the bottom surface of the side limiting wheel and the top surface of the conveyor belt is smaller than the thickness of the plate; A trigger plate is also rotatably connected to the gantry; the head and tail ends of the trigger plate are rotatably connected to the head and tail ends of the first slide bar; the trigger plate is connected to the contact of a travel switch; under normal conditions, the gap between the bottom edge of the trigger plate and the top surface of the conveyor belt is smaller than the thickness of the plate, and at this time, the travel switch is in a non-triggered state; the drive motor is linked to the travel switch.

6. The manufacturing method according to claim 1, characterized in that The transmission bodies of the first, second, third and fourth assembly lines include a support, a conveying roller and a driving motor; there are a plurality of identical conveying rollers, which are parallel to each other; the head and tail ends of each conveying roller are rotatably connected to the support, and the driving motor drives the conveying roller through a transmission mechanism, which is characterized in that there is only one driving motor, which is connected to the support; It also includes a transmission shaft; the front and rear ends of the transmission shaft are rotatably connected to the bracket; the length of the transmission shaft corresponds to the length of the bracket, the transmission shaft is perpendicular to the conveying rollers, and is below the front end or the rear end of each conveying roller; the transmission shaft is connected to the output shaft of the driving motor through a transmission structure; A first annular groove is provided on the outer wall of the head or tail of the conveying roller; A plurality of second annular grooves are arranged on the transmission shaft, each of which corresponds to a first annular groove of a conveying roller, and the corresponding first and second annular grooves are connected by an annular belt; each annular belt is twisted into an "8" shape, and the upper and lower parts of the "8" shape are vertical.

7. The manufacturing method according to claim 1, characterized in that The first assembly line may be one or multiple parallel assembly lines; the fourth assembly line may be one or multiple parallel assembly lines.

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