A PVC foam board online laminating device

Abstract

The present invention provides an online film coating device for PVC foam boards, which is applied to the film coating process of PVC foam boards and comprises: a feeding mechanism (1), a discharging mechanism (3), a film coating mechanism (2), a control module (5) and a temperature control mechanism (4). The present invention adds a rangefinder (41) and a heating strip (42) in the temperature control mechanism (3), and sets a timing unit inside the rangefinder (41), which is connected to the control module 5, and adjusts the temperature of the heating strip (42) in real time, thereby ensuring that the PVC foam board still has the required temperature when it is transferred to the film pressing stage in the middle of its transmission line, ensuring that the surface temperature of the PVC foam board is dynamically adjusted without affecting the temperature of the film itself, so that the film coating quality is improved, and even if the transmission speed in the film coating process becomes faster, the device can self-adjust the heating temperature to avoid energy waste.

Description

Technical Field

[0001] The invention relates to the field of film coating equipment, and in particular to an online film coating device for PVC foam boards. Background Art

[0002] PVC foam board is also called Chevron board and Andy board. Its chemical composition is polyvinyl chloride (Polyvinylchloride), so it is also called foamed polyvinyl chloride board. It is widely used in passenger cars, train carriage ceilings, box core layers, interior decoration boards, building exterior wall boards, interior decoration boards, offices, residences, public places, building compartments, commercial decorative frames, clean room boards, ceiling boards, screen printing, computer lettering, advertising signs, exhibition boards, logo boards, album boards and other industries, as well as chemical anti-corrosion projects, thermoforming parts, cold storage boards, special cold preservation projects, environmental protection board molds, sports equipment, breeding materials, coastal moisture-proof facilities, water-resistant materials, art materials and various lightweight partitions to replace glass ceilings. In the process of producing PVC foam board, lamination can make the foam board achieve the beneficial effects of no color difference, orange peel, bubbles, no edge jumping, yellowing resistance, discoloration, scratch resistance, and no need to paint when producing finished products. The laminating PVC board has more varieties and colors, which is suitable for the choice of various consumers.

[0003] However, during the years of production and research and development related to this technology, the applicant of this application found that the prior art has at least the following technical problems:

[0004] PVC is a resin material. If it is not softened enough, it is easy to tear or tighten the weather-resistant film during the adsorption and stretching process, resulting in loose adhesion. Therefore, in the current lamination process, the PVC film should be preheated sufficiently before adsorption to reach the softening standard, and the heating temperature should be controlled so that the PVC foam board reaches an appropriate but not excessive temperature range. This can ensure that the softening degree before lamination is sufficient and at the same time ensure that the relative temperature difference between the PVC foam board and the heated weather-resistant film is small to avoid processing difficulties.

[0005] However, in the laminating process, the existing laminating equipment usually pays attention to the heating of the weather-resistant film in the upper oven after the scraping glue (usually at about 50 degrees Celsius); but the treatment of the PVC foam board is relatively rough. The PVC foam board is only coated with the affinity agent before entering the laminating device, and then enters the infrared heating area for preheating (the heating temperature is 55 degrees Celsius, and the surface of the profile after heating can basically reach 42 degrees), and then enters the laminating area and waits for the affinity agent to volatilize.

[0006] However, when each section of PVC foam board is long or in the winter in the north, a section of PVC foam board is prone to heat loss during the transfer process in the production process (and in order to fully press the film, the transfer speed cannot be too fast). Therefore, such practices in the prior art easily lead to insufficient volatilization of the affinity agent or insufficient softening before the film pressing process in which "the PVC foam board and the film meet in the main film pressing area, the PVC foam board and the film are pressed together by a pressing wheel, and the air behind the film is slowly pressed out through multiple pressing wheels."

[0007] Another problem that can be derived from this issue is that in the prior art, the entire process after each section of PVC foam board enters the laminating device is manually controlled and operated, which not only increases the workload of technical workers, but also makes it impossible to measure in real time the length of the PVC foam board flowing through the laminating equipment in the process flow, so that on-site technicians cannot have a more accurate understanding of the current flow and status of the PVC foam board in the production process, and cannot coordinate accurately, which is not conducive to the advance planning of subsequent processes such as cutting. Summary of the invention

[0008] Based on this, it is necessary to provide a PVC foam board online laminating device that can re-preheat the PVC foam board and measure the flow speed of the PVC foam board in real time, so that technical personnel can plan the subsequent processes of the production process in advance, in order to address the problem that the PVC foam board is prone to heat loss during the laminating process, resulting in insufficient volatilization of the affinity agent or insufficient softening.

[0009] In order to solve the above technical problems, the present invention can adopt the following technical solutions:

[0010] The present invention provides an online film coating device for PVC foam boards, which is applied to the film coating process of PVC foam boards and comprises: a feeding mechanism (1) for transmitting PVC foam boards entering the online film coating device for PVC foam boards, which is arranged upstream of the transmission route of the PVC foam boards and comprises a feeding frame (10) and a feeding roller (11) arranged on the feeding frame (10); the feeding roller (11) drives the PVC foam boards located above the feeding roller (11) to be transmitted to the downstream direction of the transmission route of the PVC foam boards through its own rotation; a film coating mechanism (2) for laminating the PVC foam boards The laminating mechanism (2) comprises a film-carrying roller (21) and a laminating machine (22); the film-carrying roller (21) is arranged on the feeding rack (10) for loading the film to be pressed onto the PVC foam board, the laminating machine (22) is arranged in the middle of the PVC foam board transmission route, and is used to press and cover the film rolled out of the film-carrying roller (21) and the PVC foam board together, thereby completing the laminating; a discharging mechanism (3) is used to transfer the PVC foam board after the laminating process out of the PVC foam board online laminating device, and the discharging mechanism (3) is arranged in the downstream of the PVC foam board transmission route, The invention comprises a discharging frame (30) and a discharging roller (31) arranged on the discharging frame (30); the discharging roller (31) drives the PVC foam board located above the discharging roller (31) to leave the PVC foam board online laminating device through its own rotation, so as to enter the next processing flow; a control module (5) is used to control the operation of the PVC foam board online laminating device; the PVC foam board online laminating device also comprises: a temperature control mechanism (4) is used to ensure that the PVC foam board can maintain the temperature required for processing during the laminating process, and the temperature control mechanism (4) comprises at least one distance measuring device ( 41) and at least two heating strips (42), a timing unit is arranged in the distance meter (41), the distance meter (41) is electrically connected or wirelessly connected to the control module (5), and the distance meter (41) comprises a distance meter arm (411) and a distance meter wheel (412); the distance meter arm (411) is arranged at one end of the distance meter (41) connected to the feeding rack (10), and the distance meter wheel (412) is arranged at one end of the distance meter (41) for contacting the surface of the PVC foam board and realizing the distance measurement function; the two sides of the distance meter wheel (412) are respectively connected to the heating strips (42).The timing unit built into the distance meter (41) can calculate the corresponding PVC foam board flow speed in cooperation with the flow length of the PVC foam board measured by the distance meter (41), and transmit it to the control module (5) through electrical connection or wireless connection. The control module (5) displays the measured speed to the operator, and the operator adjusts the temperature of the heating plate in the heating strip (42) by ±5-15°C according to his experience and knowledge, so as to ensure that the temperature of the PVC foam board with too fast flow speed is not too high before it is transferred to the laminating machine 22, or to ensure that the laminating temperature of the PVC foam board with too slow flow speed is not too low before it is transferred to the laminating machine 22. Thus, the purpose of saving materials is achieved. Of course, the setting position of the heating strip (42) in the present invention is a preferred implementation position. The heating strip (42) cannot be set too close to the film to avoid interfering with the heating measures of the film itself, causing the film to be overheated, thereby affecting the laminating quality.

[0011] Furthermore, the surface of the distance measuring wheel (412) of the distance measuring device (41) is provided with a plurality of soft rubber cylinders, which are used to directly contact the PVC foam board; the distance measuring device arm (411) has two connecting rods, and the two connecting rods are connected by a revolving pair. The wheel surface of the distance measuring wheel 412 is constructed of soft rubber cylinders, and the soft rubber is preferably silica gel and PVC soft rubber. This structure allows the distance measuring wheel 412 of the distance measuring device 41 to not only meet the friction force required by the distance measuring device 41 to ensure the accuracy of the distance measuring function, but also meet the working requirements of the distance measuring device 41 to ensure friction force and avoid leaving processing marks on the surface of the PVC foam board due to the elasticity of the soft rubber material. At the same time, silica gel and PVC soft rubber are not easy to be stained with dust, which avoids the problem of being stained with dust and dirt during the long-term production process of the factory, thereby affecting the surface quality of the PVC foam board or causing the need for frequent cleaning and causing inconvenience. Since the distance measuring device arm 411 is a structure of two connecting rods connected by a rotating pair, the distance measuring device 41 can be lightly placed on the PVC foam board to be coated. Even if the height of the surface of the PVC foam board changes, it will only push the distance measuring device arms 411 at both ends of the distance measuring device 41 to bend toward the rotating pair, so as to adjust the height of the distance measuring device 41 itself, avoid the distance measuring device 41 being too fixed and colliding with the PVC foam board hard to cause scratches and damage to the PVC foam board, and avoid the distance measuring wheel 412 itself leaving marks on the PVC foam board that is softened after heating, affecting the appearance and structure of the surface of the PVC foam board.

[0012] Furthermore, the temperature control mechanism (4) also includes at least two limiters and temperature feedback sensors (43) electrically connected to the control module (5), which are used to fix the PVC foam board at a midstream position to prevent the PVC foam board from lateral displacement, monitor the temperature of the PVC foam board and feed back the temperature to the control module (5); the laminating machine (22) has an inlet and an outlet, and at least two parallel limiter guide rails (44) are arranged below the limiter; the limiter and temperature feedback sensor (43) is inserted and slid on the limiter guide rails (44) and is located on both sides of the PVC foam board to clamp the PVC foam board; one end of the limiter and temperature feedback sensor (43) used for limiting the position of the PVC foam board and reacting to the temperature is a cylindrical structure.

[0013] The stopper and temperature feedback sensor 43 can be connected to the control module 5 through a wire (not shown) or wirelessly. The control module 5 adjusts the output temperature of the heating plate in the heating strip 42 according to the feedback value of the stopper and temperature feedback sensor 43. Among them, the material of the cylindrical part is preferably a heat-conducting and temperature-transmitting material, preferably heat-conducting silica gel, and also preferably a material with a high thermal conductivity coefficient such as artificial synthetic graphite. It can also be preferably a material generated by coating a relatively heat-conducting material with heat-conducting silicone grease on the surface to ensure the accuracy of the sensor core set inside the cylinder when detecting the temperature through the material. At the same time, the working temperature should be within -50℃~220℃.

[0014] Furthermore, a thermistor element (432) is arranged inside the cylindrical structure of the stopper and temperature feedback sensor (43) along its axial direction. During operation, the cylindrical structure made of heat-conducting and heat-transmitting material rotates in a circle along with the transmission of the PVC foam board, but the thermistor element located at the center of the circle does not move, and the temperature is measured through the cylindrical structure. Thermistors are usually made of semiconductor materials, most of which have negative temperature coefficients. They belong to a class of temperature sensors with higher sensitivity values, are suitable for the production process, and have low cost, small size, and simple materials. They can be placed in the center of the cylindrical structure as the core position. Preferably, the present invention can also use a thermocouple temperature sensor, or a platinum resistance (RTD) temperature sensor. When using a larger sensor, a hollow part that can accommodate the sensor is set in the middle of the cylindrical structure.

[0015] Furthermore, the cylindrical structure of the stopper and temperature feedback sensor (43) has a stopper seat (430) at one end close to the stopper guide rail (44), and the stopper and temperature feedback sensor (43) is inserted and slid on the stopper guide rail (44) through the stopper seat (430); the end of the stopper seat (430) away from the cylindrical structure includes a stopper buckle (431), which is arranged in a second groove opened at the end of the stopper seat (430) away from the cylindrical structure, and the stopper buckle (431) is pushed upward to make the stopper seat (430) clamped at a horizontal position of the stopper guide rail (44). The horizontal position is the position where the two sides of the stopper and temperature feedback sensor 43 are adjusted according to the width of the batch of PVC foam boards processed. After the stoppers and temperature feedback sensors 43 on both sides of the PVC foam board are clamped and fixed by the stopper buckles 431, the PVC foam board is fixed in the middle, thereby avoiding lateral deviation during the transfer process.

[0016] Furthermore, a control module operation cabinet (50) is provided on the side of the laminating machine (22), which is the hardware of the control module (5), and a control chip of the control module (5) is provided inside the control module operation cabinet (50). The operator can monitor and operate the online film laminating device of the PVC foam board through the knobs and instruments on the control module operation block 50. The operator can add a control module operation panel to the control module operation block 50 to display the length of the PVC foam board currently flowing through measured by the process distance meter 41, the remaining film length of the film carrier roller 21, the output temperature of the heating strip 42, the temperature fed back by the midstream limiter and temperature feedback sensor 43, and the process end signal transmitted by the process end sensor 32 during the whole process of the online film laminating device of the PVC foam board. The control chip is used to control and coordinate the operation of each component in the system composed of the control module 5.

[0017] Furthermore, the feed frame (10) is also provided with a spare film-carrying roller (21'), a film-carrying roller position switching frame (100) carrying the spare film-carrying roller (21') and the film-carrying roller (21), and a driving motor for driving the film-carrying roller position switching frame (100) to move, the film-carrying roller position switching frame (100) having a film-carrying roller rotating rod, the film-carrying roller rotating rod being rotatably connected to the film-carrying roller position switching frame (100) through its middle, the spare film-carrying roller (21') and the film-carrying roller (21) being symmetrically arranged at both ends of the film-carrying roller rotating rod. The film-carrying roller (21) is located at a predetermined working position, the spare film-carrying roller (21') is located at a predetermined standby position, and when the film on the film-carrying roller (21) is used up, the control module 5 controls the film-carrying roller position switching frame (100) to switch the relative positions of the film-carrying roller (21) and the spare film-carrying roller (21'). Among them, the control module 5 compares the flow length of the PVC foam board measured by the rangefinder 41 with the predetermined film-carrying length of the film on each of the film-carrying rollers 21 recorded in the control module 5. When the flow length of the PVC foam board is equal to the predetermined film-carrying length, the control module 5 can obtain information on whether the film on the film-carrying roller 21 is used up in this way. Of course, other specific methods can also be used.

[0018] Furthermore, the feed rack (10) is provided with a second spare film-carrying roller (21") and a second film-carrying roller position switching rack (100') carrying the second spare film-carrying roller (21") and the film-carrying roller (21); a rack is horizontally provided on the surface of the second film-carrying roller position switching rack (100'); the film-carrying roller (21) is located at a first working position, and the second spare film-carrying roller (21") is located at a first standby position; when the film on the film-carrying roller (21) is used up, the control module 5 controls the film-carrying roller (21) to slide to a second standby position at the end of the rack away from the first standby position, and then controls the second spare film-carrying roller (21") to slide to the first working position. The second spare film-carrying roller 21" comes to the original working position (i.e., the first working position) of the original film-carrying roller 21 to replace the film supply work, so as to ensure the uninterrupted film laminating process. Among them, the control module 5 compares the flow length of the PVC foam board measured by the distance meter 41 and the predetermined film-carrying length of the film on each of the film-carrying rollers 21 recorded in the control module 5. When the flow length of the PVC foam board is equal to the predetermined film-carrying length; the control module 5 can obtain information on whether the film on the film-carrying roller 21 is used up in this way. Of course, other specific methods can also be used.

[0019] Furthermore, the feeding mechanism (1) further comprises a feeding rack guide rail (13) for carrying the feeding rack (10), the middle end of the feeding rack guide rail (13) is provided with a downward notch, and the lower end of the feeding rack (10) is provided with a protrusion corresponding to the notch. The feeding rack 3 can slide on the feeding rack guide rail 13 to change its position, and the purpose of designing the feeding rack guide rail 13 is to cope with different processing scenarios of PVC foam boards of different lengths when the length of each section of PVC foam board is changed in the factory.

[0020] Furthermore, the discharging mechanism (3) also includes a process end sensor (32) and a sensor hanging tube (33) connected to the process end sensor (32), and the sensor hanging tube (33) is connected to the side of the laminating machine (22) close to the discharging mechanism (3); the process end sensor (32) is used to monitor whether the PVC foam board entering the device has been coated, and it is suspended above the PVC foam board through the sensor hanging tube (33). The operation mechanism of the process end sensor is that after the PVC foam board has passed the online coating process of the entire PVC foam board online coating device of the present invention, it is driven by the discharge roller 31 to roll on the discharge mechanism 3. Since the PVC foam board initially enters the device in sections, it has a PVC foam board section head. When the section head touches the process end sensor 32, it drives the detection rod of the process end sensor 32 to push to the left, so that the circuit in the process end sensor 32 is closed, and a signal is generated and transmitted to the control module 5, which is convenient for the control module 5 to transmit to the general control module of the entire factory process, so as to coordinate the next process step. It can be used as a travel switch. Of course, the device can also be used as a means of calculating and checking the length of the board. It can transmit an end signal to the control module 5, so that the control module 5 can detect whether there is a calculation error of the transmission speed when calculating according to the transmission speed of the feeding mechanism 1. The process end sensor 32 can be connected to the control module 5 by electrical connection, or it can be connected to the control module 5 by wireless means.

[0021] In addition, the solution of the present invention may also include: the discharging mechanism 3 also includes a transfer guide wheel group 34, through which the PVC foam board is subsequently sent to the cutting equipment. The cutting equipment is a well-known equipment in the field and is a necessary subsequent process of the PVC foam board processing and laminating process, but it is no longer within the scope of the technical solution of the present invention, so it will not be described here. When the upstream rangefinder 41 of the embodiment of the present invention first contacts the beginning of a section of PVC foam board, a start signal will be transmitted to the control module 5, and when the PVC foam board is transmitted to the downstream film pressing end, the process end sensor 32 gives a termination signal, so that the control module 5 can always monitor the length of each section of PVC foam board, and set an internal storage database to record this length. Technical operators in this field can set preset values ​​in the control module 5. For example, a certain length of PVC foam board must be heated to a predetermined temperature to ensure the temperature of the PVC foam board during the entire process. At this time, the heating temperature of the heating strip 42 set next to the rangefinder 41 needs to be increased or decreased. It is no longer just to meet the sufficient temperature in the processing stage of the midstream film pressing machine 22, but it is necessary to provide a temperature height within the range of 10 to 20 degrees higher. Of course, these specific usage methods are determined by production needs and actual conditions, and the protection scope of the present invention includes but is not limited to this.

[0022] The above-mentioned PVC foam board online laminating device has at least the following advantages:

[0023] The present invention adds a rangefinder 41 and a heating strip 42 to the temperature control mechanism 3, and sets a timing unit inside the rangefinder 41, which is connected to the control module 5, and adjusts the temperature of the heating strip 42 in real time, thereby ensuring that the PVC foam board still has the required temperature when it is transferred to the film pressing stage in the middle of its transmission line, ensuring that the surface temperature of the PVC foam board is dynamically adjusted without affecting the temperature of the film itself, so that the coating quality is improved, and even if the process speed (such as the transmission speed) in the coating process becomes faster, the overall system composed of the control module 5 and components such as the rangefinder 41 and the heating strip 42 can self-adjust the heating temperature of the device to avoid energy waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a stereoscopic diagram of an online film-laminating device for a PVC foam board in one embodiment of the present invention; it is used to show the overall stereoscopic diagram of the online film-laminating device for a PVC foam board, so as to facilitate the further elaboration of each specific structure and its principle in the following;

[0025] Figure 2 for Figure 1 A partial stereoscopic view of the feeding mechanism 1 and the laminating mechanism 2 from another perspective; used to show the positional relationship between the distance meter and the heating strip in the upstream part and explain the working principle between the components;

[0026] Figure 3 for Figure 1 A partially enlarged stereoscopic view of the position of the distance meter 41 and the heating strip 42 in the temperature control mechanism; used to show the specific structure of the distance meter 41 and the heating strip 42 in the temperature control mechanism;

[0027] Figure 4 for Figure 3 A partial enlarged view of the portion A in the middle; used to show the wheel surface structure of the rangefinder 41 and to explain the effect of the structure;

[0028] Figure 5 for Figure 1 A partial enlarged schematic diagram of the middle stopper and temperature feedback sensor 43; used to illustrate the structural features and principles of the stopper and temperature feedback sensor 43;

[0029] Figure 6 for Figure 5 A partial stereogram of the connection between the middle stopper and temperature feedback sensor 43 and the laminator 22; used to illustrate that the stopper and temperature feedback sensor 43 is different from Figure 5 Another embodiment, in which the sensor portion adopts a non-contact radiation sensor;

[0030] Figure 7 for Figure 1 A three-dimensional schematic diagram of the switching of two working positions of the film roller loading rack in the film coating mechanism; used to show that when the film of a film roller on the film roller loading rack of the present invention is exhausted, the positions of the spare film carrier roller 21' and the currently working film carrier roller 21 can be replaced with each other in time through a circular motion by the advantages of structural design, thereby achieving the purpose of not destroying the continuity of the production line;

[0031] Figure 8 for Figure 1 A three-dimensional schematic diagram of the switching of two working positions of the film roller loading frame in the film coating mechanism; used to show that when the film of a film roller on the film roller loading frame of the present invention is exhausted, the second spare film carrier roller 21" can be replaced to the working position by the advantages of structural design, and the position of the currently working film carrier roller 21 is moved to the rightmost position in the figure through the rack, so as to achieve the purpose of not destroying the continuity of the production line;

[0032] Fig. 9 for Figure 1 A three-dimensional diagram of the discharge mechanism 3; the purpose is to illustrate the role and principle of the process end sensor provided in the discharge mechanism 3 in the online laminating production line;

[0033] Fig.10The flowchart of the control relationship between the distance meter 41 and the control module 5 in a preferred embodiment of the present invention is used to explain how the distance meter 41 and the control module 5 complete information judgment and automatically realize the function of controlling the film carrier roller switching frame 100 to replace the positions of the film carrier roller 21 and the spare film carrier roller 21';

[0034] Fig.11 The figure is a flow chart of information between the temperature control mechanism 4, the discharging mechanism 3, the stopper and temperature feedback sensor 43 and the control module 5 in a preferred embodiment of the present invention; the purpose is to show the connection between the temperature control mechanism 4 such as the heating strip 42, the distance measuring device 41, the stopper and temperature feedback sensor 43 and the control module 5, and further explain the principle of automatic management realized by the control module 5;

[0035] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0036] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present invention.

[0037] In the entire description of the present invention, it should be noted that, for directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like, indicating directions and positional relationships, are directions or positional relationships based on the directions shown in the drawings or the common names used by those skilled in the art. They are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and should not be understood as limiting the specific scope of protection of the present invention.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0039] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 1This is a stereoscopic diagram of an online film-laminating device for a PVC foam board in one embodiment of the present invention; it is used to show the overall stereoscopic diagram of the online film-laminating device for a PVC foam board, so as to facilitate the further elaboration of each specific structure and its principle in the following; Figure 2 for Figure 1 A partial stereoscopic diagram of the feeding mechanism 1 and the laminating mechanism 2 from another perspective; used to show the positional relationship of the rangefinder and the heating strip in the upstream part and explain the working principles between the various components; the PVC foam board online laminating device in this embodiment includes a feeding mechanism 1, a laminating mechanism 2, a discharging mechanism 3, a temperature control mechanism 4 and a control module 5.

[0040] The feeding mechanism 1 is used to transfer the PVC foam board entering the PVC foam board online laminating device, and is arranged upstream of the PVC foam board transmission route, and includes a feeding rack 10 and a feeding roller 11 arranged on the feeding rack 10; the feeding roller 11 drives the PVC foam board located above the feeding roller 11 to be transmitted to the downstream direction of the PVC foam board transmission route through its own rotation; the feeding mechanism 1 can also include a feeding rack guide rail 13 carrying the feeding rack 3, the middle end of the feeding rack guide rail 13 is provided with a downward notch, the lower end of the feeding rack 3 is provided with a convex opening corresponding to the notch, and the convex opening of the feeding rack 3 is slidably connected to the notch of the feeding rack guide rail 13. The feeding rack 3 can slide on the feeding rack guide rail 13 to change its position to adapt to various production situations.

[0041] The laminating mechanism 2 is used for laminating the PVC foam board, and the laminating mechanism 2 includes a film-carrying roller 21 and a film laminating machine 22; the film-carrying roller 21 is arranged on the feeding rack 10, and is used for loading the film to be pressed onto the PVC foam board, and the film laminating machine 22 is arranged in the middle of the PVC foam board transmission route, and is used for pressing and covering the film rolled out from the film-carrying roller 21 and the PVC foam board together, thereby completing the laminating.

[0042] The discharging mechanism 3 is used to transfer the PVC foam board after the lamination process out of the PVC foam board online laminating device. The discharging mechanism 3 is arranged downstream of the PVC foam board transmission route, and includes a discharging rack 30 and a discharging roller 31 arranged on the discharging rack 30; the discharging roller 31 drives the PVC foam board located above the discharging roller 31 to leave the PVC foam board online laminating device through its own rotation, so as to enter the next processing flow.

[0043] The control module 5 is used to control the operation of the online laminating device for the PVC foam board.

[0044] The temperature control mechanism 4 is used to ensure that the PVC foam board can maintain the temperature required for processing during the lamination process. The temperature control mechanism 4 includes at least one rangefinder 41 and at least two heating strips 42. A timing unit is arranged in the rangefinder 41. The rangefinder 41 is electrically or wirelessly connected to the control module 5. The rangefinder 41 includes a rangefinder arm 411 and a rangefinder wheel 412; the rangefinder arm 411 is arranged at one end of the rangefinder 41 connected to the feed rack 10, and the rangefinder wheel 412 is arranged at one end of the rangefinder 41 for contacting the surface of the PVC foam board and realizing the distance measurement function; the heating strips 42 are connected to both sides of the rangefinder wheel 412.

[0045] Among them, the rangefinder 41 calculates the flow speed of the PVC foam board through the flow length of the PVC foam board measured by itself and the time information provided by its timing unit, and transmits the information to the control module 5. The technicians in this field operate the control module 5 through the human-computer interaction device, and then calculate the heat dissipation of the PVC foam board before contacting the film based on their relevant work experience in the process flow, and then increase the heating temperature of the heating plate on the heating strip 42. Another optional embodiment is that the control module 5 is provided with heating temperature corresponding values ​​corresponding to the flow speed of the PVC foam board at different gears, so that the control module 5 can choose to let the heating strip 42 apply different types of temperature at the initial position according to the different gears of the flow speed of the PVC foam board. In the conception of the present invention, in order to prevent the heating of the heating strip 42 itself from affecting the temperature of the weather-resistant film heated by the scraper and the upper oven, the heating strip 42 is set at this advance position that is kept a distance from the film carrier roller.

[0046] The heating strip 42 is connected to the bearing assembly of the axis of the measuring wheel 412, so when the measuring wheel 412 rotates, the heating strip 42 remains stationary, and a groove is formed on the lower surface of the heating strip 42, in which a plurality of heating plates are installed; the heating plates (not shown) in the heating strip 42 are preferably arranged side by side in the groove of the heating strip 42, and preferably industrial electric heating plates are used, and silicone heating plates can also be selected, and PTC constant temperature heating plates can also be selected, and ceramic heating plates (MCH) with fast heating and fast adjustment feedback can also be selected. Such heating plates are widely used in many fields such as industrial and agricultural technology, and are suitable for ordinary medium and low temperature heating. The preferred size is within the range of a maximum of 0.6m×Xm to a minimum of 15mm×15mm, and the thickness is between 1.5mm (the thinnest is 0.8mm and the thickest is 4.5mm). The lead length is preferably the standard 130mm, and the size is determined by the size of the heating strip 42 in actual production and the design or process requirements. The heating temperature thereof is controlled by the control module 5, and the connection relationship between the heating element and the control module 5 can be as shown in the figure, that is, connected by wires, but can also be connected wirelessly.

[0047] When the PVC foam board is transmitted downstream through the feeding mechanism 1, the distance measuring wheel 412 located upstream is lightly placed on the PVC foam board and driven to rotate, and the rotation number data is transmitted to the control module 5, and the control module 5 converts the rotation number data into corresponding PVC foam board length data through the diameter data preset in the module; the control module 5 heats the heating strip 42 to a first predetermined temperature according to the calculated PVC foam board length and speed data, ensuring that the PVC foam board still has a required second predetermined temperature when it is transmitted to the film pressing stage in the middle of its transmission line.

[0048] Among them, the second predetermined temperature is any value in the temperature range that the PVC foam board should have during the film pressing process, and the value range is 40-55 degrees, and it should usually be 45 degrees. Before entering the device of the present invention for film pressing, the PVC foam board should first pass through the surface-coated affinity agent device, and then enter the infrared heating zone for heating. The temperature of the surface of the PVC foam board is in the range of 40-60 degrees. This range is determined by the preset value preset by the technician in the control module, and then enter the device of the present invention. Another point to note is that when the temperature is low, such as in winter, the board needs to enter the insulation workshop 24 hours in advance for insulation. Before the PVC foam board is pressed, when passing through the infrared heating zone, the temperature of the infrared heating zone is usually 55 degrees Celsius. The surface of the profile after heating basically reaches 42 degrees, and then passes through the hot air blower to volatilize the affinity agent coated on the surface of the profile, and then the profile enters the coating area of ​​the device of the present invention. In this process, it is best to heat step by step to avoid heat failure or intense heating at a certain stage, thereby affecting the quality of the PVC foam board or the coating effect. Of course, such a process is common knowledge to those skilled in the art and will not be described in detail here. The first predetermined temperature is the temperature emitted by the heating plate. Since it is used to heat the PVC foam board, it is usually higher than the second predetermined temperature required by the PVC foam board by 10-25 degrees. Of course, in actual use, the preset temperature difference includes but is not limited to this range.

[0049] See also Figure 3 , Figure 4 , Figure 3 for Figure 1 A partially enlarged stereoscopic view of the position of the distance meter 41 and the heating strip 42 in the temperature control mechanism; used to show the specific structure of the distance meter 41 and the heating strip 42 in the temperature control mechanism; Figure 4 for Figure 3 A partial enlarged view of the portion A in the middle; used to show the wheel surface structure of the rangefinder 41 and explain the effect of the structure; the specific structure of the rangefinder 41 is shown in this embodiment.

[0050] The rangefinder 41 includes a rangefinder wheel 412 and a rangefinder arm 411. The rangefinder wheel 412 of the rangefinder 41 is provided with a plurality of soft rubber cylinders on its surface, which are used to directly contact the PVC foam board. The rangefinder arm 411 has two connecting rods, which are connected by a revolving pair. Since the rangefinder arm 411 is a structure in which two connecting rods are connected by a revolving pair, the rangefinder 41 can be lightly placed on the PVC foam board to be coated. Even if the height of the surface of the PVC foam board changes, it will only push the rangefinder arms 411 at both ends of the rangefinder 41 to bend toward the revolving pair, thereby adjusting the height of the rangefinder 41 itself, avoiding the rangefinder 41 from being too fixed and colliding with the PVC foam board hard, causing scratches and damage to the PVC foam board, and also avoiding the rangefinder wheel 412 itself from leaving marks on the PVC foam board that is soft after heating, affecting the aesthetics and structure of the surface of the PVC foam board.

[0051] The wheel surface of the distance measuring wheel 412 is constructed of a soft rubber cylinder, and the soft rubber is preferably silica gel and PVC soft rubber. This structure allows the distance measuring wheel 412 of the distance measuring device 41 to contact the PVC foam board to measure the distance, which can not only meet the friction required by the distance measuring device 41 to ensure the accuracy of the distance measuring function, but also meet the working requirements of the distance measuring device 41 to ensure the friction while avoiding leaving processing marks on the surface of the PVC foam board due to the elasticity of the soft rubber material. At the same time, silica gel and PVC soft rubber are not easy to get dusty, which avoids the problem of being contaminated by dust and dirt during the long-term production process of the factory, thereby affecting the surface quality of the PVC foam board or causing the need for frequent cleaning and causing inconvenience.

[0052] Please also read Figure 2 , Figure 5 ,in Figure 2 The positional relationship between the stopper and temperature feedback sensor 43, the laminator 22, the control module 5, etc. is shown. Figure 5 for Figure 1 A partial enlarged schematic diagram of the middle stopper and temperature feedback sensor 43; used to illustrate the structural characteristics and principles of the stopper and temperature feedback sensor 43; this embodiment includes a stopper and temperature feedback sensor 43.

[0053] The temperature control mechanism 4 also includes at least two limiters and temperature feedback sensors 43 electrically connected to the control module 5, which are used to fix the PVC foam board in the midstream position to prevent the PVC foam board from lateral displacement, while monitoring the temperature of the PVC foam board and feeding back to the control module 5. The laminator 22 has an inlet and an outlet. The limiter and temperature feedback sensor 43 is arranged below the inlet of the laminator 22, and is used to clamp the two sides of the PVC foam board; one end of the limiter and temperature feedback sensor 43 used for limiting the position and sensing the temperature of the PVC foam board is a cylindrical structure, and the limiter and temperature feedback sensor 43 is inserted and slid on at least two parallel limiter guide rails 44.

[0054] The stopper and temperature feedback sensor 43 can be connected to the control module 5 via a wire (not shown) or wirelessly. The control module 5 adjusts the output temperature of the heating plate in the heating strip 42 according to the feedback value of the stopper and temperature feedback sensor 43.

[0055] Among them, the material of the cylindrical part is preferably a heat-conducting and heat-transmitting material, preferably heat-conducting silicone, and also preferably a material with a high thermal conductivity coefficient such as artificial synthetic graphite. It can also be preferred to coat the surface of a relatively heat-conducting material with thermal grease to ensure the accuracy of the sensor core arranged inside the cylinder when detecting the temperature through the material. At the same time, the operating temperature should be within -50℃ ~ 220℃.

[0056] A thermistor element 432 is arranged inside the cylindrical structure of the stopper and temperature feedback sensor 43 along its axial direction. During operation, the cylindrical structure made of heat-conducting and heat-transmitting material rotates in a circle along with the transfer of the PVC foam board, but the thermistor element located at the center of the circle does not move, and the temperature of the board is measured through the cylindrical structure. Thermistors are usually made of semiconductor materials, most of which have negative temperature coefficients. They belong to a class of temperature sensors with higher sensitivity values, which are suitable for the production process, and have low cost, small volume, and simple materials. They can be placed in the center of the cylindrical structure as the core position. It is preferred, but the present invention can also use thermocouple temperature sensors, or select platinum resistance (RTD) temperature sensors. When using a larger sensor, a hollow part that can accommodate the sensor is set in the middle of the cylindrical structure.

[0057] The cylindrical structure of the limiter and temperature feedback sensor 43 may have a limiter seat 430 at one end close to the limiter guide rail 44, and the limiter and temperature feedback sensor 43 slides on the limiter guide rail (44) through the limiter seat 430; the end of the limiter seat 430 away from the cylindrical structure includes a limiter buckle 431, which is arranged in a second groove opened below the limiter seat 430, and the limiter buckle 431 is pushed upward to make the limiter seat 430 clamped in a horizontal position of the limiter guide rail 44.

[0058] The lateral position is the position adjusted on both sides of the stopper and temperature feedback sensor 43 according to the width of the batch of PVC foam boards to be processed. After the stopper and temperature feedback sensor 43 on both sides of the PVC foam board are clamped and fixed by the stopper buckle 431, the PVC foam board is fixed in the middle, avoiding lateral deviation during the transfer process.

[0059] See also Figure 6 , Figure 6 for Figure 5 A partial stereogram of the connection between the middle stopper and temperature feedback sensor 43 and the laminator 22; used to illustrate that the stopper and temperature feedback sensor 43 is different from Figure 5 Another embodiment of the present invention is a non-contact radiation sensor used as the sensor portion; the control module 5, the laminator 22, the support rod 48, the sensor bar 47 and the limiter guide rail 44 are shown in this embodiment.

[0060] At this time, the limiter and temperature feedback sensor 43 is Figure 5 In the embodiment shown, it is possible not to use a thermistor sensor, or to set a sensor in the center of the cylindrical structure, but to add a sensor strip 47 facing the surface of the PVC foam board, such as Figure 6A pair of upwardly extending support rods 48 are arranged at both ends of the limiter guide rail 44, and the two pairs of support rods 48 support a sensor strip 47. A groove is arranged on the lower surface of the sensor strip 47, and a non-contact temperature sensor using a radiation temperature measurement method to measure the surface temperature is arranged in the groove. The radiation temperature measurement sensor is arranged in the groove, and an infrared temperature measurement sensor, such as a HE-155K infrared temperature measurement sensor, is preferably arranged therein. A plurality of HE-155K infrared temperature measurement probes can be arranged inside the groove, and the measurement accuracy is ±1% or ±1°C, the repeatability is ±0.5% or ±0.5°C, the output mode is 4-20mA, the power supply is 24VDC, the fashe rate is fixed at 0.95, and the response time is 500ms. In addition, this type of product obviously supports the addition of laser auxiliary aiming when the laser measurement of PVC foam board is not effective. A fixed infrared thermometer HEM-300 may also be selected. The commonly used sizes and powers of these two types are obviously suitable for the design of the present invention. They can be simply installed in the groove and then connected to the control module 5. Of course, the two sensors provided in the embodiment may not only be connected to the control module 5, but also may be equipped with secondary instruments as a reference for technicians. In this case, the limiter and temperature feedback sensor 43 has only a limit function and should be called a limiter 43. The temperature feedback sensor 47 is the sensor bar 47. The limiter and thermal sensing functions are no longer two-in-one, but are completed by two separate components, which will not be repeated here.

[0061] A control module operation cabinet 50 is provided on the side of the laminator 22, which is the hardware of the control module 5. A control chip of the control module 5 is provided inside the control module operation cabinet 50. This design allows the operator to monitor and operate the online film laminating device for the PVC foam board through the knobs and instruments on the control module operation block 50. The operator can add a control module operation panel to the control module operation block 50 to display the length of the PVC foam board currently flowing through measured by the process distance meter 41, the remaining film length of the film carrier roller 21, the output temperature of the heating strip 42, the temperature fed back by the midstream limiter and temperature feedback sensor 43, and the process end signal transmitted by the process end sensor 32 during the whole process of the online film laminating device for the PVC foam board. The control chip is used to control and coordinate the operation of each component in the system composed of the control module 5.

[0062] See also Figure 7 , Figure 7 for Figure 1A three-dimensional schematic diagram of the switching of two working positions of the film roller loading rack in the middle laminating mechanism; it is used to show that when the film of a film roller on the film roller loading rack of the present invention is used up, the advantages of structural design can be used to timely replace the positions of the spare film carrier roller 21' and the current working film carrier roller 21 through a circular motion, thereby achieving the purpose of not disrupting the continuity of the production line; this embodiment includes a film carrier roller 21, a spare film carrier roller 21', a film carrier roller position switching rack 100 and a driving motor (not shown).

[0063] The film-carrying roller position switching frame 100 has a film-carrying roller rotating rod, which is rotatably connected to the film-carrying roller position switching frame 100 through its middle, and the spare film-carrying roller 21 ′ and the film-carrying roller 21 are symmetrically arranged at both ends of the film-carrying roller rotating rod.

[0064] The film-carrying roller 21 is located at a predetermined working position, and the standby film-carrying roller 21' is located at a predetermined standby position. When the film on the film-carrying roller 21 is used up, the control module 5 controls the film-carrying roller position switching frame 100 to switch the relative positions of the film-carrying roller 21 and the standby film-carrying roller 21'. The film-carrying roller position switching frame 100 is connected to the feeding frame 10 via a rotating shaft, and the film-carrying roller position switching frame 100 realizes the relative position switching of the film-carrying roller 21 and the standby film-carrying roller 21' by rotating around the circumferential trajectory of the rotating shaft.

[0065] In the embodiment in which position switching is achieved by flipping around the axis, the connection between the feed rack and the film-carrying roller position switching rack 100 should be higher than the original embodiment in which position switching is achieved by horizontal movement to ensure that the film-carrying roller 21 does not collide with the rangefinder 41 and its related support frame and other components during the flipping process.

[0066] When the film-coating parts are used up, they must be reinstalled, and the fixing parts need to be disassembled. Each disassembly takes a lot of time. The design of the film-carrying roller position switching frame 100 of the present invention avoids this situation. Since the PVC foam board produced and the online film coating process of the PVC foam board are continuous and uninterrupted, the purpose of this design is to avoid interrupting the film coating process of the PVC foam board and ensure the efficiency and continuity of the production process.

[0067] Among them, the control module 5 compares the flow length of the PVC foam board measured by the rangefinder 41 with the predetermined film-carrying length of the film on each of the film-carrying rollers 21 recorded in the control module 5. When the flow length of the PVC foam board is equal to the predetermined film-carrying length, the control module 5 can obtain information on whether the film on the film-carrying roller 21 is used up in this way. Of course, other specific methods can also be used.

[0068] See also Figure 8 , Figure 8 for Figure 1 A three-dimensional schematic diagram of the switching of two working positions of the film roller loading frame in the film coating mechanism; used to show that when the film of a film roller on the film roller loading frame of the present invention is exhausted, the second spare film carrier roller 21" can be replaced to the working position by the advantages of structural design, and the position of the currently working film carrier roller 21 is moved to the rightmost position in the figure through the rack, so as to achieve the purpose of not destroying the continuity of the production line; Figure 8 The embodiment is different from Figure 7 Another implementation of the embodiment includes a second film carrier roller position switching frame 100 ′, a film carrier roller 21 , a second spare film carrier roller 21 ″ and a rack (drawn in the figure but not shown).

[0069] A rack is horizontally arranged on the surface of the second film-carrying roller position switching frame 100', the film-carrying roller 21 is located at a first working position, and the second spare film-carrying roller 21" is located at a first spare position. When the film on the film-carrying roller 21 is used up, the control module 5 controls the film-carrying roller 21 to slide to a second spare position at the end of the rightmost rack, and then controls the second spare film-carrying roller 21" to slide to the first working position. The second spare film-carrying roller 21" comes to the original working position (i.e., the first working position) of the original film-carrying roller 21 to replace the film supply work to ensure the uninterrupted lamination process. In this embodiment, the rack is arranged on the film-carrying roller position switching frame 100', and its own horizontal movement is used to realize the relative position switching of the film-carrying roller 21 and the second spare film-carrying roller 21".

[0070] Among them, the control module 5 compares the flow length of the PVC foam board measured by the rangefinder 41 with the predetermined film-carrying length of the film on each of the film-carrying rollers 21 recorded in the control module 5. When the flow length of the PVC foam board is equal to the predetermined film-carrying length, the control module 5 can obtain information on whether the film on the film-carrying roller 21 is used up in this way. Of course, other specific methods can also be used.

[0071] See also Fig. 9 , Fig. 9 for Figure 1 A three-dimensional diagram of the discharge mechanism 3; the purpose is to illustrate the role and principle of the process end sensor 32 provided in the discharge mechanism 3 in the online laminating production line; the specific elements of the discharge mechanism 3 are shown in this embodiment: the process end sensor 32, the sensor hanging tube 33, the discharge roller 31, the discharge frame 30 and the transfer guide wheel group 34.

[0072] The sensor hanging tube 33 is connected to the side of the laminating machine 22 close to the discharging mechanism 3; the process end sensor 32 is used to monitor whether the PVC foam board entering the device has been coated, and it is suspended above the PVC foam board through the sensor hanging tube 33.

[0073] The operation mechanism of the process end sensor 32 is that after the PVC foam board has passed the online coating process of the entire PVC foam board online coating device of the present invention, it is driven by the discharge roller 31 to roll on the discharge mechanism 3. Since the PVC foam board initially enters the device in sections, it has a PVC foam board section head. When the section head touches the process end sensor 32, it drives the detection rod of the process end sensor 32 to push to the left, so that the circuit in the process end sensor 32 is closed, and a signal is generated and transmitted to the control module 5, which is convenient for the control module 5 to transmit to the general control module of the entire factory process, so as to coordinate the next process step. It can be used as a travel switch. Of course, the device can also be used as a means of calculating and checking the length of the board. It can transmit an end signal to the control module 5, so that the control module 5 can detect whether there is a calculation error of the transmission speed when calculating according to the transmission speed of the feeding mechanism 1. The process end sensor 32 can be connected to the control module 5 by electrical connection, or it can be connected to the control module 5 by wireless means.

[0074] The transfer guide wheel group 34 is used to transfer the PVC foam board to the cutting equipment. The cutting equipment is a well-known equipment in the art and is a necessary subsequent process of the PVC foam board processing and laminating process, but it is no longer within the scope of the technical solution of the present invention, so it will not be described in detail here. When the upstream rangefinder 41 of the embodiment of the present invention first contacts the beginning of a section of PVC foam board, a start signal will be transmitted to the control module 5, and when the PVC foam board is transmitted to the downstream film pressing end, the process end sensor 32 gives a termination signal, so that the control module 5 can always monitor the length of each section of PVC foam board, and set an internal storage database to record this length. Technical operators in this field can set preset values ​​in the control module 5. For example, a certain length of PVC foam board must be heated to a predetermined temperature to ensure the temperature of the PVC foam board during the entire process. At this time, the heating temperature of the heating strip 42 set next to the rangefinder 41 needs to be increased or decreased. It is no longer just to meet the sufficient temperature in the processing stage of the midstream film pressing machine 22, but it is necessary to provide a temperature height within the range of 10 to 20 degrees higher. Of course, these specific usage methods are determined by production needs and actual conditions. The protection scope of the present invention includes but is not limited to the example content.

[0075] See also Fig.10 , Fig.10This is a flow chart of the control relationship between the distance meter 41 and the control module 5 in a preferred embodiment of the present invention; the purpose is to illustrate how the distance meter 41 and the control module 5 complete information judgment and automatically realize the function of controlling the film carrier roller switching frame 100 to replace the positions of the film carrier roller 21 and the spare film carrier roller 21'. Since the logic in the figure is clear and the process is complete, it is not necessary to repeat it here.

[0076] Fig.11 It is a flow chart of information among the temperature control mechanism 4, the discharging mechanism 3, the limiter and temperature feedback sensor 43 and the control module 5 in a preferred embodiment of the present invention; the purpose is to show the connection between the temperature control mechanism 4 such as the heating strip 42, the rangefinder 41, the limiter and temperature feedback sensor 43 and the control module 5, and further to illustrate the principle of automatic management realized by the control module 5; the specific circuit connection and realization process of the temperature measurement and feedback can be completed by those skilled in the art through simple programming and circuit matching with their professional knowledge, and the flow chart combined with the text description of the other drawings is clear enough for those skilled in the art to realize the scheme and achieve the corresponding technical effect without creative means, so it will not be repeated here.

[0077] The above embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Any equivalent substitution or change made by a person skilled in the art based on the present invention is within the protection scope of the present invention.

[0078] The figure numbers and drawings in the present invention are efforts made to facilitate the understanding of the present invention and its related works by those skilled in the art during the application process and thereafter, and do not constitute a limitation on the necessary positions and connection relationships of the components.

[0079] The protection scope of the present invention shall be subject to the claims.

[0080] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

Claims

1. A PVC foam board online laminating device, applied to the laminating process of PVC foam board, comprising: A feeding mechanism (1) is used to transfer the PVC foam board into the PVC foam board online laminating device, and is arranged upstream of the PVC foam board transmission route, and comprises a feeding rack (10) and a feeding roller (11) arranged on the feeding rack (10); the feeding roller (11) drives the PVC foam board located above the feeding roller (11) to be transmitted to the downstream direction of the PVC foam board transmission route through its own rotation; A laminating mechanism (2) for laminating the PVC foam board, the laminating mechanism (2) comprising a film-carrying roller (21) and a laminating machine (22); the film-carrying roller (21) is arranged on the feeding rack (10) for loading the film to be pressed onto the PVC foam board, the laminating machine (22) is arranged in the middle of the PVC foam board transmission route for laminating the film rolled out from the film-carrying roller (21) and the PVC foam board together to complete the laminating; A discharging mechanism (3) is used to transfer the PVC foam board after the lamination process out of the PVC foam board online laminating device. The discharging mechanism (3) is arranged downstream of the PVC foam board transmission route, and comprises a discharging rack (30) and a discharging roller (31) arranged on the discharging rack (30); the discharging roller (31) drives the PVC foam board located above the discharging roller (31) to leave the PVC foam board online laminating device through its own rotation, so as to enter the next processing flow; A control module (5) for controlling the operation of the PVC foam board online laminating device; It is characterized in that The PVC foam board online laminating device also includes: A temperature control mechanism (4) is used to ensure that the PVC foam board can maintain the temperature required for processing during the lamination process. The temperature control mechanism (4) includes at least one distance meter (41) and at least two heating strips (42). A timing unit is arranged in the distance meter (41). The distance meter (41) is electrically or wirelessly connected to the control module (5). The distance meter (41) includes a distance meter arm (411) and a distance meter wheel (412). The distance meter arm (411) is arranged at one end of the distance meter (41) connected to the feeding rack (10). The distance meter wheel (412) is arranged at one end of the distance meter (41) for contacting the surface of the PVC foam board and realizing the distance measurement function. The two sides of the distance meter wheel (412) are respectively connected to the heating strips (42).

2. The PVC foam board online laminating device according to claim 1, characterized in that: The surface of the distance measuring wheel (412) of the distance measuring device (41) is provided with a plurality of soft rubber cylinders, which are used to directly contact the PVC foam board; the distance measuring device arm (411) has two connecting rods, and the two connecting rods are connected by a rotating pair.

3. The PVC foam board online laminating device according to claim 1, characterized in that: The temperature control mechanism (4) also includes at least two limiters and temperature feedback sensors (43) electrically connected to the control module (5), which are used to fix the PVC foam board at a midstream position to prevent the PVC foam board from lateral displacement, monitor the temperature of the PVC foam board and feed back the temperature to the control module (5). The laminating machine (22) has an inlet and an outlet, and at least two parallel limiter guide rails (44) are arranged below the limiter. The limiter and temperature feedback sensor (43) is inserted and slid on the limiter guide rails (44) and is located on both sides of the PVC foam board to clamp the PVC foam board. One end of the limiter and temperature feedback sensor (43) used for limiting the position of the PVC foam board and reacting to the temperature is a cylindrical structure.

4. The PVC foam board online laminating device according to claim 3, characterized in that: A thermistor element (432) is arranged inside the cylindrical structure of the stopper and temperature feedback sensor (43) along its axial direction.

5. The PVC foam board online laminating device according to claim 3, characterized in that: The cylindrical structure of the limiter and temperature feedback sensor (43) has a limiter seat (430) at one end close to the limiter guide rail (44), and the limiter and temperature feedback sensor (43) is inserted and slid on the limiter guide rail (44) through the limiter seat (430); the end of the limiter seat (430) away from the cylindrical structure includes a limiter buckle (431), which is arranged in a second groove opened at the end of the limiter seat (430) away from the cylindrical structure, and the limiter buckle (431) is pushed upward to make the limiter seat (430) clamped at a lateral position of the limiter guide rail (44).

6. The PVC foam board online laminating device according to claim 1, characterized in that: A control module operating cabinet (50) is arranged on the side of the laminating machine (22), which is the mounting hardware of the control module (5). A control chip of the control module (5) is arranged inside the control module operating cabinet (50).

7. The PVC foam board online laminating device according to claim 1, characterized in that: The feeding frame (10) is also provided with a spare film-carrying roller (21'), a film-carrying roller position switching frame (100) carrying the spare film-carrying roller (21') and the film-carrying roller (21), and a driving motor for driving the film-carrying roller position switching frame (100) to move. The film-carrying roller position switching frame (100) has a film-roller rotating rod, which is rotatably connected to the film-carrying roller position switching frame (100) through its middle part. The spare film-carrying roller (21') and the film-carrying roller (21) are symmetrically arranged at both ends of the film-roller rotating rod.

8. The PVC foam board online laminating device according to claim 1, characterized in that: The feeding frame (10) is provided with a second spare film-carrying roller (21") and a second film-carrying roller position switching frame (100') carrying the second spare film-carrying roller (21") and the film-carrying roller (21); a rack is horizontally provided on the surface of the second film-carrying roller position switching frame (100'); the film-carrying roller (21) is located at a first working position, and the second spare film-carrying roller (21") is located at a first standby position; when the film on the film-carrying roller (21) is used up, the control module 5 controls the film-carrying roller (21) to slide to a second standby position at the end of the rack away from the first standby position, and then controls the second standby film-carrying roller (21") to slide to the first working position.

9. The PVC foam board online laminating device according to claim 1, characterized in that: The feeding mechanism (1) further comprises a feeding rack guide rail (13) supporting the feeding rack (10); a downward notch is arranged at the middle end of the feeding rack guide rail (13); a protrusion corresponding to the notch is arranged at the lower end of the feeding rack (10); the protrusion of the feeding rack (10) is slidably connected to the notch of the feeding rack guide rail (13).

10. The PVC foam board online laminating device according to claim 1, characterized in that: The discharging mechanism (3) further comprises a process end sensor (32) and a sensor hanging tube (33) connected to the process end sensor (32), wherein the sensor hanging tube (33) is connected to the side of the laminating machine (22) close to the discharging mechanism (3); the process end sensor (32) is used to monitor whether the PVC foam board entering the device has been coated, and is suspended above the PVC foam board through the sensor hanging tube (33).

Images