Maintenance film laminating machine for precast slab production

Abstract

The invention relates to the technical field of prefabricated part production equipment, and particularly discloses a maintenance film laminating machine for prefabricated plate production, which comprises a bearing platform and a control box, a moving table is movably arranged above the bearing platform, a film winding roller is rotatably arranged at the upper end of the moving table, and an adsorption roller is rotatably arranged in the moving table below the film winding roller; the periphery of the adsorption roller is sleeved with a barrel cover fixedly connected with the moving table, the barrel cover close to the feeding end is provided with a film breaking assembly moving in the radial direction, and the lower end of the moving table is rotationally provided with a pressing and pasting roller. According to the maintenance film laminating machine for prefabricated plate production, the situation that the surface of a concrete layer fluffs due to the fact that a film is pulled in the film breaking process can be effectively avoided, the surface quality of the finally-formed prefabricated plate is guaranteed, meanwhile, whole-process automation of prefabricated plate maintenance and film laminating is achieved, and the production efficiency is improved. And streamlined operation and whole-course automatic film covering treatment are combined, so that the operation efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of prefabricated component production equipment, and in particular discloses a maintenance laminating machine for prefabricated board production. Background Art

[0002] During the production and preparation of precast panels, the concrete in the mold needs to be covered with a layer of plastic film after being vibrated and compacted, and then sent to the curing equipment for maintenance. The coating of the surface of existing precast panels is still mainly done manually, and the specific process is that the operator holds the coating tool and moves it in a straight line along the concrete on the surface of the mold to complete the coating process. This not only has low operating efficiency and high labor intensity, but also makes it difficult to avoid the operator stepping on the vibrated and compacted concrete layer, affecting the final quality of the precast panel product.

[0003] The invention patent with application number 2019113208706 discloses a concrete precast panel coating and pressing mechanism, which includes a workbench, on which a driving mechanism, a mounting frame, a feeding mechanism, a coating mechanism, a pressing mechanism and a cutting mechanism are installed. The feeding mechanism is located on the left side of the driving mechanism. The mounting frame includes two opposite electric cylinders fixed to the workbench, the piston rod of the electric cylinder is fixed with a vertical mounting plate, the upper end of the mounting plate is fixed with a horizontal fixing plate, the bottom surface of the fixing plate is fixed with two opposite fixing rods, and a horizontal hollow mounting plate is fixed between the lower ends of the two fixing rods. The coating and pressing mechanism disclosed in the invention patent realizes the automatic coating process of the precast panel before maintenance, and can make the plastic film close to the concrete surface. However, during the film cutting process in this solution, the cutting knife needs to be pressed downward so that it presses the plastic film into the cutting knife groove to complete the cutting. During the cutting process, the pressing force of the cutting knife on the plastic film will cause the plastic film originally attached to the concrete surface to be dragged, thereby causing the film to be pulled a short distance. Under the action of the film being pulled, the originally smooth and flat concrete layer will become rough, thereby affecting the surface quality of the final precast board. Based on this, the present application proposes a newly designed maintenance laminating machine for precast board production to solve the above-mentioned technical problems of the existing concrete precast board laminating die pressing mechanism. Summary of the invention

[0004] The present invention aims to provide a maintenance coating machine for precast board production, so as to solve the problem that in the process of cutting after coating the concrete surface, the film originally covering the concrete surface will be pulled and dragged due to the pressing action of the cutter on the film, thereby causing the concrete surface to become rough, affecting the poor surface quality of the final precast board.

[0005] The present invention is achieved through the following technical solutions: A maintenance laminating machine for prefabricated board production, comprising a bearing platform and a control box for placing prefabricated board molds, a movable platform movably arranged above the bearing platform, a film winding roller rotatably arranged on the upper end of the movable platform, an adsorption roller rotatably arranged in the movable platform below the film winding roller, a cylinder cover fixedly connected to the movable platform is sleeved on the periphery of the adsorption roller, a feeding end is arranged at the upper end of the cylinder cover, a through opening for extending the adsorption roller is opened at the lower end, a radially movable film cutting assembly is arranged on the cylinder cover close to the feeding end, and a pressing roller is rotatably arranged at the lower end of the movable platform; The adsorption roller comprises a hollow roller body, a plurality of rows of adsorption holes arranged along the axial direction are provided on the outer circumferential surface of the roller body, and the fan-shaped angle of the plurality of rows of adsorption holes in the circumferential direction of the roller body is set between 60-120 degrees, a hollow roller shaft and a solid roller shaft rotatably connected to the movable platform are respectively provided at both ends of the roller body, and an exhaust pump is rotatably connected to the end of the hollow roller shaft in a sealed manner.

[0006] During operation of the maintenance film laminating machine for prefabricated board production disclosed by the present invention, the film on the film coiling roller is first pulled through the annular gap between the adsorption roller and the drum cover by the feed end, and then pulled out horizontally from the through opening at the bottom end of the drum cover.

[0007] Then, the precast board mold after the concrete is vibrated and compacted is sent to the carrying platform, and the pulled film is covered on the top of the precast board mold, and pressed on the surface of the concrete by the pressing roller. Then the walking mechanism on the moving platform is started, and the film roll roller unwinds according to the walking speed, so that the film is smoothly pressed on the concrete surface of the precast board mold until the film coating is completed.

[0008] After the film coating is completed, the vacuum pump is started first to evacuate the hollow inner cavity inside the adsorption roller to a negative pressure state. At this time, the film in the lower half of the cylinder cover can be adsorbed and fixed through the adsorption holes on the roller body, while the film in the upper half is in a free moving state due to the absence of adsorption holes. Then the film cutting component is started to move it radially inward, and the blade is pressed against the upper half of the adsorption roller or the blade groove of the roller body to completely cut the film. In the process of film cutting, the film covering the surface of the concrete material will not be subjected to any pulling and dragging action. Only the upper part of the film connected to the film winding roller will cause the film winding roller to adaptively rotate a certain angle under its pulling and dragging action to complete the loosening of the material.

[0009] Finally, turn off the vacuum pump to restore the air pressure in the adsorption roller cavity to normal, then unwind the film to a certain length, pull it out from the opening at the bottom of the cylinder cover, and wait for the next prefabricated board mold to arrive for the next set of laminating actions.

[0010] As a further configuration of the above scheme, a sensing block is arranged on the end face of the roller body, and the sensing block is arranged in the fan-shaped angle corresponding to the adsorption hole, a sensor that acts on the sensing block is arranged on the lower half of the end wall of the cylinder cover, and a driving component that actively drives the adsorption roller to rotate and adjust is arranged on the movable platform.

[0011] As a further configuration of the above scheme, the driving component includes a rotating motor arranged on the outer side of the movable platform, a second toothed disk is arranged on the motor shaft of the rotating motor, the outer end of the solid roller shaft extending out of the movable platform is connected to a circumferentially limited and axially movable sleeve shaft through a first spring, the outer end of the sleeve shaft is connected to a first toothed disk corresponding to the second toothed disk, and the first toothed disk is adjusted along the axial movement of the solid roller shaft through a magnetic attraction component.

[0012] As a further configuration of the above solution, the magnetic assembly includes an annular magnetic block arranged on the first tooth surface disk, and an electromagnet aligned with the annular magnetic block is arranged on the outer side surface of the movable platform.

[0013] The above is a further improvement scheme of the present invention. After the film traction and coating are completed, the sensor can be used to detect whether the sensing block is aligned. When it is found that it is not aligned, it can be determined that the adsorption hole on the adsorption roller is not in the position before film cutting. At this time, the first tooth surface disk and the second tooth surface disk can be meshed through the magnetic suction component, and then the adsorption roller can be rotated and adjusted to the corresponding film cutting position or state under the active control of the rotating motor.

[0014] After the adjustment is completed, the film cutting component is started to perform the film cutting action. After the film cutting is completed, the film can be unrolled to a certain length, and then adsorbed on the surface of the roller body by the adsorption roller, and then actively rotated and pulled to the top of the through-port, and finally the vacuum pump is disconnected to release the negative pressure adsorption effect, so that the film can be automatically drawn out from the through-port, and the next film coating action can be directly carried out after the next set of prefabricated board molds are delivered.

[0015] As a further configuration of the above scheme, the film cutting assembly includes an axial blade seat connected to the outer circumferential surface of the cylinder cover, the axial blade seat is provided with a cutter that radially extends into the cylinder cover, and the axial blade seat is provided with a driving cylinder that drives the cutter to move radially. The above is one of the specific design schemes of the film cutting assembly, and the driving cylinder drives the cutter to move radially inward, and then the film is pressed against the roller body of the adsorption roller or the knife groove on the roller body through the blade portion to complete the film cutting.

[0016] As a further configuration of the above scheme, the bearing platform includes a bottom box seat, the upper surface of which is provided with two parallel track bars, a row of axle rods are rotatably provided between the two track bars, and each axle rod is provided with a plurality of supporting wheels. The design of the bearing platform can facilitate the loading or unloading of the prefabricated board mold before and after lamination, while ensuring the stable support of the prefabricated board mold, thereby realizing streamlined operation.

[0017] As a further configuration of the above scheme, both ends of the track bar are provided with limit ends, and sensors for detecting the position of the moving platform are provided on the limit ends. The design of the upper and lower limit ends prevents the moving platform from falling from both ends, and at the same time, the position of the moving platform can be detected in real time through the sensor, and can be stopped at a specific position in cooperation with the active control of the control box.

[0018] As a further configuration of the above scheme, the mobile platform includes a gantry, and the lower ends of both sides of the gantry are provided with walking mechanisms that cooperate with the track bars, and the walking mechanisms are provided with walking wheels that interact with the track bars, and the ends of the walking wheels are connected to walking motors. The above is a specific design scheme of the mobile platform, and the power input of the walking motor can actively realize the left and right movement of the entire gantry.

[0019] As a further configuration of the above scheme, a vibrating material leveling assembly is provided in the gantry frame located on the opposite side of the pressing roller with the adsorption roller as the symmetric center, and the vibrating material leveling assembly includes a horizontal bar fixed in the gantry frame, and the lower end of the horizontal bar is connected to a horizontal material leveling box at the bottom through a second spring, and a vibration motor is provided in the material leveling box. The design of the above vibrating material leveling assembly enables it to further level the concrete material in the precast panel mold through the high-frequency vibration of the material leveling box before traction and coating, and then perform coating after leveling, so that the film can be evenly and tightly attached to the upper surface of the concrete for effective coating, thereby improving the coating effect and ensuring the surface quality of the final precast panel.

[0020] As a further configuration of the above scheme, a guide roller is rotatably arranged in a movable platform located between the feeding end of the drum cover and the film winding roller.

[0021] Compared with the prior art, the present invention has the following beneficial effects: The maintenance laminating machine for prefabricated board production disclosed in the present invention can adsorb and fix the film covering the surface of concrete on the roller body of the adsorption roller before film cutting through the design of the adsorption roller, the drum cover and the film cutting component, and the film located above the film cutting component is in a free state. Therefore, the film covering the surface of concrete will not be pulled and dragged during the pressing and cutting process, thereby avoiding the occurrence of fuzzing on the surface of the concrete layer due to the pulling of the film during the film cutting process, thereby effectively ensuring the surface quality of the prefabricated board after final forming.

[0022] The present invention further improves the rotation state of the adsorption roller, so that it can rotate freely during the traction and coating process of the film, and can be actively regulated by the rotating motor through the tooth surface meshing transmission before the film is cut, and cooperates with the sensor detection to make the adsorption roller rotate and adjust to the corresponding state before the film is cut, to ensure that the film covering the surface of the concrete can be stably adsorbed without being dragged during the film cutting process, and after the film is cut, it can actively pull the upper film downward to the opening to connect with the next group of prefabricated board molds, realizing the full automation of prefabricated board maintenance and coating, combining assembly line operation and full automation coating processing, greatly improving its operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure from a first angle of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure from a second angle of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the carrying platform in the present invention; Figure 4 It is a schematic diagram of the internal planar structure of the mobile station in the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the moving platform, the vibrating material-splitting assembly, etc. in the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the moving platform, film winding roller, pressing roller, etc. in the present invention; Figure 7 It is a schematic diagram of the three-dimensional cross-sectional structure of the adsorption roller in the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the adsorption roller, sleeve shaft, first tooth surface disk, etc. in Example 2 of the present invention; Fig. 9 For the present invention Figure 6 A schematic diagram of the method structure at the middle A; Fig.10 It is a schematic diagram of the main internal planar structure of the tube cover in the present invention. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Figures 1 to 10 , and describes the application in detail with reference to embodiments. Example 1

[0027] Embodiment 1 discloses a maintenance laminating machine for prefabricated board production, Figure 1 and attached Figure 2 The main body of the laminating machine includes a carrying platform 1 and a moving platform 2. The moving platform 2 spans over the carrying platform 1 and moves in the left and right directions thereof. Then, a precast board mold 3 filled with concrete material is arranged above the carrying platform 1, so that the moving platform 2 can cover the surface of the concrete material in the precast board mold 3 with a film during the left and right movement.

[0028] Reference Figure 3 The carrying platform 1 includes a bottom box seat 101, a plurality of legs 102 are arranged on the lower surface of the bottom box seat 101, a track bar 103 is arranged at the front and rear ends of the upper surface of the bottom box seat 101, and a row of axle rods 104 are rotatably arranged between the front and rear track bars 103, and a plurality of supporting wheels 105 are arranged on each axle rod 104, and the prefabricated board mold 3 fed in can be supported and transported by the plurality of supporting wheels 105. In addition, a limit end 106 is arranged at the left and right ends of each track bar 103, and a sensor 107 is arranged on the limit end 106, and the sensor 107 is used to detect the position of the moving platform 2 moving left and right, and then a control box 4 is arranged on the front side of the bottom box seat 101, and the sensor 107 is electrically connected to the control box 4, so that the position of the moving platform 2 can be fed back to the control box 4 in real time during operation, and then the control box 4 controls the stopping of the moving platform 2.

[0029] Reference Figure 4 , Attachment Figure 5 and attached Figure 6The mobile platform 2 includes a gantry 201, and a walking mechanism 202 that cooperates with the track bar 103 is arranged at the lower end of the front and rear sides of the gantry 201. A row of walking wheels 203 that interact with the track bar 103 are arranged in the walking mechanism 202, and a walking motor 204 is connected to the end of one or more of the walking wheels 203. A film winding roller 5 arranged perpendicular to the track bar 103 is rotatably arranged at the upper end of the gantry 201, and a suction roller 6 is rotatably arranged in the gantry 201 below the film winding roller 5, and a barrel cover 7 fixedly connected to the gantry 201 is sleeved on the outer periphery of the suction roller 6. A feeding end 701 is arranged at the upper end of the barrel cover 7 along its tangential direction, and a through hole 702 for extending the suction roller 6 is opened at the lower end of the barrel cover 7. A plurality of guide rollers 8 are arranged between the feed end 701 and the film winding roller 5, so that the film unloaded from the film winding roller 5 can enter the annular gap between the drum cover 7 and the adsorption roller 6 through the feed end 701, and then be drawn out from the through opening 702 to cover the concrete surface in the precast panel mold 3. In addition, a pressing roller 9 that can be adjusted up and down is rotatably arranged at the lower end of the gantry 201. When the film is drawn out from the through opening 702, it is pressed against the concrete surface by the pressing roller 9, and then during the overall movement, the film can be closely attached to the concrete surface to complete the coating.

[0030] Reference Figure 4 , Attachment Figure 7 and attached Figure 8 The adsorption roller 6 includes a hollow roller body 601, and a hollow roller shaft 602 and a solid roller shaft 603 connected to the gantry 201 are respectively arranged on the two end surfaces of the roller body 601. A plurality of rows of adsorption holes 604 are arranged at intervals along the axial direction on the circumferential surface of the roller body 601, and the adsorption holes 604 are connected to the hollow inner cavity of the roller body 601, and the fan-shaped angles of the plurality of rows of adsorption holes 604 in the circumferential direction are set between 60-120°, so that when the film is coated on the surface of the roller body 601, only the fan-shaped angle area corresponding to the adsorption holes 604 can adsorb and fix the film, and the other parts of the film are not subjected to the negative pressure adsorption effect. Finally, the end of the hollow roller shaft 602 extending out of the gantry 201 is rotatably connected to the exhaust pipe 10 through a sealing kit, and the end of the exhaust pipe 10 is connected to an exhaust pump 11 at the outer end of the gantry 201, so that the positive and negative pressure conditions inside the adsorption roller 6 can be controlled under the action of the exhaust pump 11.

[0031] Reference Figure 4 and attached Fig.10A film cutting assembly 12 is provided on the outer circumferential surface of the barrel cover 7 and on one side close to the feed end 701. The film cutting assembly 12 includes an axial blade seat 121 fixedly connected to the outer circumferential surface of the barrel cover 7, a radially arranged cutter 122 is provided on the axial blade seat 121, and a driving cylinder 123 for driving the cutter 122 to move radially inward and act on the film is provided at the outer end of the axial blade seat 121. Under the action of the driving cylinder 123, the cutter 122 moves radially inward, and then presses the film on the roller body 601 above the adsorption hole 604 to complete the film cutting. In the process of cutting, the film below is adsorbed by the negative pressure of the adsorption hole 604, which will not cause the film below the cutter 122 to be pulled, and only the upper part of the film extending into the barrel cover 7 can be pulled, which effectively ensures the stability of the film that has covered the surface of the concrete during the film cutting process. Example 2

[0032] Example 2 discloses a maintenance laminating machine for prefabricated board production that is optimized and improved based on the technical solution in Example 1. The similarities between it and Example 1 will not be described again.

[0033] This embodiment 2 focuses on further improving the design of the adsorption roller 6. Figure 7 , Attachment Figure 8 and attached Fig. 9 In this embodiment 2, the outer end of the solid roller 603 extending out of the gantry 201 is connected to a circumferentially limited and axially movable sleeve shaft 606 through a first spring 605, and the outer end of the sleeve shaft 606 is connected to a first toothed disk 607. At the same time, an annular magnetic block 608 is arranged on the side of the first toothed disk 607 facing the gantry 201, and then an electromagnet 609 fixedly connected to the gantry 201 is sleeved on the outside of the solid roller 603. When current is passed through the electromagnet 609, a repulsive force can be generated between the electromagnet 609 and the annular magnet 608, thereby pushing the first toothed disk 607 outward by a certain distance. In addition, a mounting plate 205 is fixed on the outer side of the gantry 201 below the first tooth disk 607, and a rotating motor 206 is arranged on the mounting plate 205. A second tooth disk 207 that acts on the first tooth disk 607 is arranged on the motor shaft of the rotating motor 206. When the first tooth disk 607 is engaged with the second tooth disk 207 under the action of magnetic force, it can actively rotate under the drive of the rotating motor 206, and can actively rotate with the traction of the film in other cases.

[0034] A sensing block 610 is provided on one end face of the roller body 601, and the sensing block 610 is provided in the fan-shaped angle corresponding to the adsorption hole 604. At the same time, a sensor 703 that interacts with the sensing block 610 is provided on the lower half of the end wall of the barrel cover 7. The specific sensor 703 can be a proximity switch, so that when the sensor 703 is axially aligned with the sensing block 610, it means that the multiple rows of adsorption holes 604 are located in the lower half of the barrel cover 7, and the film cutting component 12 can be started to perform the film cutting action. When the multiple rows of adsorption holes 604 are not in the set position, the rotating motor 206 can be used to actively rotate and adjust until the sensor 703 is axially aligned with the sensing block 610 before the film cutting action is performed.

[0035] Reference Figure 4 and attached Figure 5 In this embodiment 2, a vibrating material leveling assembly 13 is also provided in the gantry 201 located on the opposite side of the pressing roller 9 with the adsorption roller 6 as the symmetric center. The vibrating material leveling assembly 13 includes a horizontal bar 131 fixed in the gantry 201, and a horizontal material leveling box 133 is connected to the lower end of the horizontal bar 131 through a second spring 132, and a vibration motor 134 is provided in the material leveling box 133. Through the design of the vibrating material leveling assembly 13, when the moving platform 2 moves along the upper part of the prefabricated board module, the vibrating material leveling assembly 13 first vibrates and levels the concrete material, and then the adsorption roller 6 presses the film on the surface of the concrete material, and finally the pressing roller 9 further presses the film tightly on its surface to ensure the coating effect.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A maintenance laminating machine for prefabricated board production, comprising a carrying platform for placing a prefabricated board mold and a control box, characterized in that: A movable table is movably arranged above the carrying platform, a film winding roller is rotatably arranged on the upper end of the movable table, an adsorption roller is rotatably arranged in the movable table below the film winding roller, a cylinder cover fixedly connected to the movable table is arranged on the outer periphery of the adsorption roller, a feeding end is arranged at the upper end of the cylinder cover, a through opening for extending the adsorption roller is opened at the lower end, a radially movable film cutting assembly is arranged on the cylinder cover near the feeding end, and a pressing roller is rotatably arranged at the lower end of the movable table; The adsorption roller comprises a hollow roller body, a plurality of rows of adsorption holes arranged along the axial direction are provided on the outer circumferential surface of the roller body, and the fan-shaped angle of the plurality of rows of adsorption holes in the circumferential direction of the roller body is set between 60-120 degrees, a hollow roller shaft and a solid roller shaft rotatably connected to the movable platform are respectively provided at both ends of the roller body, and an exhaust pump is rotatably connected to the end of the hollow roller shaft in a sealed manner.

2. The maintenance laminating machine for prefabricated board production according to claim 1, characterized in that: A sensing block is arranged on the end surface of the roller body, and the sensing block is arranged in the fan-shaped angle corresponding to the adsorption hole. A sensor that interacts with the sensing block is arranged on the lower half of the end wall of the cylinder cover. A driving component that actively drives the adsorption roller to rotate and adjust is arranged on the movable platform.

3. The maintenance laminating machine for prefabricated board production according to claim 2, characterized in that: The driving assembly includes a rotating motor arranged on the outer side of the moving platform, a second toothed disk is arranged on the motor shaft of the rotating motor, the outer end of the solid roller shaft extending out of the moving platform is connected to a circumferentially limited and axially movable sleeve shaft through a first spring, the outer end of the sleeve shaft is connected to a first toothed disk corresponding to the second toothed disk, and the first toothed disk is adjusted and arranged along the axial movement of the solid roller shaft through a magnetic attraction assembly.

4. The maintenance laminating machine for prefabricated board production according to claim 3, characterized in that: The magnetic assembly comprises an annular magnetic block arranged on the first tooth surface disk, and an electromagnet aligned with the annular magnetic block is arranged on the outer side surface of the moving platform.

5. The maintenance laminating machine for prefabricated board production according to claim 1, characterized in that: The film cutting assembly comprises an axial blade seat connected to the outer circumferential surface of the barrel cover, wherein a cutter extending radially into the barrel cover is arranged in the axial blade seat, and a driving cylinder driving the cutter to move radially is arranged on the axial blade seat.

6. The maintenance laminating machine for prefabricated board production according to claim 1, characterized in that: The bearing platform comprises a bottom box seat, the upper surface of which is provided with two parallel track bars, a row of wheel axle rods is rotatably arranged between the two track bars, and each wheel axle rod is provided with a plurality of supporting wheels.

7. The maintenance laminating machine for prefabricated board production according to claim 6, characterized in that: Both ends of the track bar are provided with limit ends, and sensors for detecting the position of the moving platform are provided on the limit ends.

8. The maintenance laminating machine for prefabricated board production according to claim 1, characterized in that: The mobile platform comprises a gantry, and the lower ends of both sides of the gantry are provided with walking mechanisms matched with the track bars, and the walking mechanisms are provided with walking wheels acting on the track bars, and the ends of the walking wheels are connected with walking motors.

9. The maintenance laminating machine for prefabricated board production according to claim 8, characterized in that: A vibrating material leveling assembly is arranged in the gantry which is located on the opposite side of the pressing roller with the adsorption roller as the symmetry center. The vibrating material leveling assembly includes a horizontal bar fixed in the gantry. The lower end of the horizontal bar is connected to a horizontal material leveling box at the bottom through a second spring, and a vibration motor is arranged in the material leveling box.

10. The maintenance laminating machine for prefabricated board production according to claim 1, characterized in that: A guide roller is rotatably arranged in a moving platform located between the feeding end of the drum cover and the film winding roller.

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