A negative pressure type plate making machine and a working method thereof

Abstract

The application discloses a negative pressure type plate making machine and a working method thereof, and belongs to the field of plate processing. The plate making machine comprises a plate making bed, a workbench arranged at the top end of the plate making bed and a negative pressure mechanism. The negative pressure mechanism is communicated with a gas extraction hole arranged on the workbench through a pipeline. The plate making machine further comprises a glue spraying mechanism. The glue spraying mechanism comprises a glue spraying walking unit, a glue discharging unit arranged on the glue spraying walking unit and a glue storage unit communicated with the glue discharging unit. The glue storage unit is arranged in parallel with the plate making bed. The glue discharging unit is communicated with the glue storage unit through a walking glue discharging pipe. The plate making machine and the working method thereof are adopted, and the glue spraying mechanism is arranged in a matched mode. Therefore, the problem of low matching degree and high cost caused by additional configuration of the user is solved.

Description

Technical Field

[0001] This invention relates to the field of sheet metal processing technology, and in particular to a negative pressure sheet metal forming machine and its working method. Background Technology

[0002] With the improvement of living standards, more and more people are choosing to travel in RVs, leading to the rapid development of the RV industry. In the RV production process, the vehicle panels need to be processed. Current technology generally uses the following panel-making machines to laminate the panels:

[0003] CN202221573293.9 discloses a negative pressure type slab making machine, including a slab making bed, a negative pressure pump, an air storage tank, a control box, and rollers. A negative pressure pump is provided on one side of the slab making bed, and an air storage tank is connected to one side of the negative pressure pump via a pipe. A control box for controlling the negative pressure pump and the air storage tank is placed on one side of the air storage tank. A sliding slide plate is installed inside the lower surface of the upper cover plate. A sliding tooth rod is fixed on the inner surface of the upper cover plate above the slide plate. A rotating transmission gear is installed on the upper surface of the slide plate. A displacement rod penetrates the outer surface of the slide plate. A rubber block is fixedly provided at the lower end of the displacement rod. A pressure plate is fixedly provided on the lower surface of the upper cover plate.

[0004] It can be seen that existing PCB manufacturing machines have the following defects:

[0005] 1. The lack of a glue-coating mechanism necessitates the separate configuration of glue-coating equipment, increasing production costs;

[0006] 2. The lack of a board feeding mechanism requires manual feeding, which increases the labor costs for staff.

[0007] 3. The lack of a positioning mechanism makes it easy for the sheet material to deviate from the set position during processing, which reduces the processing quality. Summary of the Invention

[0008] To address the aforementioned issues, this invention provides a negative pressure board-making machine and its operating method. By incorporating a glue-applying mechanism, it solves the problems of low compatibility and high cost caused by additional user configuration.

[0009] To achieve the above objectives, the present invention provides a negative pressure type board making machine, including a board making bed, a worktable disposed at the top of the board making bed, and a negative pressure mechanism. The negative pressure mechanism is connected to an air extraction hole disposed on the worktable via a pipeline. The negative pressure type board making machine also includes a glue spreading mechanism, which includes a glue spreading walking unit, a glue dispensing unit disposed on the glue spreading walking unit, and a glue storage unit connected to the glue dispensing unit. The glue storage unit is arranged parallel to the board making bed.

[0010] The glue dispensing unit is connected to the glue storage unit via a traveling glue extraction pipe.

[0011] Preferably, the glue dispensing unit includes a glue dispensing shell and an air-expanding glue assembly disposed at the top of the inside of the glue dispensing shell. The air-expanding glue assembly includes a vacuum pump and an air bladder connected to the vacuum pump.

[0012] Multiple glue holes are evenly distributed at the bottom of the lower glue shell.

[0013] Preferably, the glue storage unit includes a glue storage shell, and the top side of the glue storage shell is provided with a glue-feeding elongated hole arranged parallel to the board making bed. One end of the glue-feeding tube extends into the interior of the glue storage shell through the glue-feeding elongated hole, and the other end is connected to the lower glue shell below the airbag.

[0014] The bottom of the travel-type glue extraction tube, which extends into the glue storage shell, is connected to a funnel-shaped glue inlet tube, and a glue extraction pump is installed on the travel-type glue extraction tube.

[0015] Preferably, a hanging rail is fixed at the top of the inside of the glue storage shell, and the traveling glue extraction pipe extends into the top of one end of the glue storage shell and is horizontally slidably connected to the hanging rail via a hanging rod. The hanging rail is arranged parallel to the board making bed.

[0016] Preferably, an installation groove is provided at the bottom of the inner side of the lower housing, a pressure sensor is installed in the installation groove, and a rubber protective cover is fixed on the installation groove and at the position covering the pressure sensor.

[0017] The pressure sensor is electrically connected to the glue pump via the controller.

[0018] Preferably, the glue-coating walking unit includes walking tracks arranged on both sides of the board-making bed and parallel to the board-making bed, and a walking support frame. The bottom end of the walking support frame is rotatably equipped with a walking wheel, and the walking wheel is connected to a walking reduction motor fixed on the walking support frame.

[0019] The traveling wheels are mounted on the traveling track. Limit switches are installed at both ends of the traveling track and aligned with the traveling wheels. The limit switches are electrically connected to the traveling gear motor via a controller.

[0020] Preferably, the negative pressure type board making machine also includes a board feeding mechanism, which includes a linear module suspended above the board making bed and arranged parallel to the board making bed, a mounting plate connected to the bottom output end of the linear module, and a lifting suction cup assembly set at the bottom end of the mounting plate.

[0021] Preferably, the lifting suction cup assembly includes a lifting drive cylinder fixed to the bottom of the mounting plate, a mounting rod connected to the bottom output end of the lifting drive cylinder, and suction cup components. The mounting rod has an elongated adjustment hole, and multiple suction cup components are arranged in the elongated adjustment hole.

[0022] The suction cup component includes an adjusting screw and a suction cup. The bottom end of the adjusting screw passes through an elongated adjusting hole and is fixedly connected to the suction cup. Positioning nuts are threaded onto both the upper and lower ends of the elongated adjusting hole on the outer circumference of the adjusting screw.

[0023] Preferably, the negative pressure type plate making machine further includes a pressure plate mechanism, which includes a plurality of pressure plate assemblies evenly arranged around the edge of the plate making bed. Each pressure plate assembly includes an L-shaped fixed plate fixedly connected at one end to the outer wall of the plate making bed and a pressing cylinder fixedly connected at the other end of the L-shaped fixed plate. The bottom end of the pressing cylinder is fixed with a pressure plate, which is located above the worktable.

[0024] Multiple clamping cylinders are electrically connected to the controller via a synchronization valve.

[0025] A method for operating a negative pressure type plate making machine includes the following steps:

[0026] S1. Use a forklift to unload the composite board and skin directly below the board loading mechanism. At this time, the skin, composite material, glue coating mechanism and board making bed are arranged in a straight line.

[0027] S2. Open the linear module until the linear module moves the lifting suction cup assembly directly above the material to be laminated.

[0028] S3. Close the linear module, control the piston rod of the lifting drive cylinder to extend, drive the suction cup downward until the suction cup picks up the board to be laminated, control the piston rod of the lifting drive cylinder to retract, drive the board to be laminated upward until the height of the board to be laminated is higher than the height of the board making bed and the glue coating mechanism, and close the lifting drive cylinder.

[0029] S4. Open the linear module. The linear module will move the composite material to be laminated towards the laminating bed until the composite material is directly above the laminating bed.

[0030] S5. Control the piston rod of the lifting drive cylinder to extend, drive the composite material to move down, until the composite material is placed on the worktable, open the suction cup to control the piston rod of the lifting drive cylinder to retract and reset.

[0031] S6. Open the clamping cylinder. The clamping cylinder drives the pressure plate to move downward, and the pressure plate presses down on the edge of the composite material.

[0032] S7. Turn on the travel reduction motor and the air pump. The travel drive motor drives the lower rubber shell to travel along the travel track. At the same time, use the air pump to inflate the air bag. The air bag squeezes the glue in the lower rubber shell, causing the glue to drip from the lower glue hole. Under the action of gravity, the glue drips onto the board to be laminated until the travel wheel touches the limit switch on the travel track. Turn off the travel reduction motor and use the air pump to extract air into the air bag.

[0033] S8. Open the linear module until the linear module moves the lifting suction cup assembly to directly above the skin.

[0034] S9. Close the linear module, control the piston rod of the lifting drive cylinder to extend, drive the suction cup downward until the suction cup picks up the skin, control the piston rod of the lifting drive cylinder to retract, drive the skin upward until the height of the skin is higher than the height of the board making bed and the glue coating mechanism, and close the lifting drive cylinder.

[0035] S10. Open the linear module. The linear module drives the skin to move towards the board preparation bed until the skin moves directly above the board to be composited.

[0036] S11. Control the piston rod of the lifting drive cylinder to extend, drive the skin to move downward until the skin is placed on the composite material, open the suction cup to control the piston rod of the lifting drive cylinder to retract and reset.

[0037] S12. Open the negative pressure mechanism, evacuate air through the pipeline until the skin and the composite material to be composited are cured to obtain the composite material, control the clamping cylinder to reset, so that the pressure plate releases the limit on the composite material.

[0038] S13. Control the piston rod of the lifting drive cylinder to extend until the suction cup picks up the composite board, control the piston rod of the lifting drive cylinder to retract, and drive the composite board to move upward and leave the board making bed.

[0039] S14. Open the linear module to move the composite board away from the board to be laminated and the skin until it is misaligned with the board bed. Control the piston rod of the lifting drive cylinder to extend and move the composite board down until it is placed on the ground. Open the suction cup and remove the composite board.

[0040] The present invention has the following beneficial effects:

[0041] 1. By providing a matching glue-spraying mechanism, the problems of low compatibility and high cost caused by additional configurations by users are solved;

[0042] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0043] Figure 1 This is a perspective view of a negative pressure type plate-making machine according to the present invention;

[0044] Figure 2 for Figure 1 Enlarged view of point A in the image;

[0045] Figure 3 for Figure 1 Enlarged view of point B in the image;

[0046] Figure 4 This is a schematic diagram of the glue application mechanism of a negative pressure type PCB manufacturing machine.

[0047] Figure 5 This is a side view of the board feeding mechanism of a negative pressure board making machine.

[0048] The components include: 1. Negative pressure pump; 2. Air tank; 3. Panel making bed; 4. Workbench; 5. Pressing plate mechanism; 51. L-shaped fixing plate; 52. Pressing cylinder; 53. Pressing plate; 6. Glue application mechanism; 61. Walking support frame; 62. Lower glue shell; 63. Walking track; 64. Glue storage shell; 65. Dual-purpose pump for suction and inflation; 66. Airbag; 67. Walking glue extraction pipe; 68. Hanging rod; 7. Sheet material feeding mechanism; 71. Suction cup assembly; 711. Adjusting screw; 712. Positioning nut; 713. Suction cup; 72. Linear module; 73. Mounting plate; 74. Mounting rod; 741. Long strip-shaped adjustment hole; 75. Lifting drive cylinder. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages disclosed in the embodiments of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the embodiments of the present invention and are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments in this application without creative effort are within the scope of protection of this application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0050] It should be noted that the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or server that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0051] Similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0052] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed when in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0053] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0054] like Figures 1-5 As shown, a negative pressure type PCB making machine includes a PCB making bed 3, a worktable 4 disposed at the top of the PCB making bed 3, and a negative pressure mechanism. In this embodiment, the negative pressure mechanism includes a negative pressure pump 1 and an air storage tank 2. One end of the negative pressure pump 1 is connected to the interior of the PCB making bed 3 via a pipeline, and the other end is connected to the air storage tank 2. Since the negative pressure structure and principle are common knowledge in the field, they will not be described in detail here. The negative pressure mechanism is connected to the air extraction hole opened on the worktable 4 via a pipeline. The negative pressure type PCB making machine also includes a glue application mechanism 6. The glue application mechanism 6 includes a glue application traveling unit, a glue dispensing unit disposed on the glue application traveling unit, and a glue storage unit connected to the glue dispensing unit. The glue storage unit is arranged parallel to the PCB making bed 3. The glue dispensing unit is connected to the glue storage unit via a traveling glue extraction pipe 67.

[0055] Specifically, the glue dispensing unit includes a glue dispensing shell 62 and an air-expanding glue dispensing assembly disposed at the top of the inside of the glue dispensing shell 62. The air-expanding glue dispensing assembly includes a dual-purpose pump 65 for both vacuuming and inflating and a bladder 66 connected to the dual-purpose pump 65. The bottom end of the glue dispensing shell 62 is evenly provided with multiple glue dispensing holes. The dual-purpose pump 65 is used to inflate or de-inflate the bladder. When inflated, the bladder 66 expands, squeezing the glue out of the glue dispensing shell 62 and improving the glue dispensing effect. When de-inflated, the bladder 66 shrinks, creating a negative pressure inside the glue dispensing shell 62, preventing further glue dripping. The glue storage unit includes a glue storage shell 64. The top side of the glue storage shell 64 has a glue-feeding elongated hole arranged parallel to the board bed 3. One end of the traveling glue extraction tube 67 extends into the interior of the glue storage shell 64 through the glue-feeding elongated hole, and the other end is connected to the lower glue shell 62 below the airbag 66. The bottom of the traveling glue extraction tube 67 extending into the glue storage shell 64 is connected to a trumpet-shaped glue inlet tube, and a glue extraction pump is installed on the traveling glue extraction tube 67.

[0056] A hanging rail is fixed to the top of the inside of the glue storage shell 64. The traveling glue extraction tube 67 extends into the top of one end of the glue storage shell 64 and is horizontally slidably connected to the hanging rail via a hanging rod 68. The hanging rail is arranged parallel to the board making bed 3, which can reduce the impact of the weight of the traveling glue extraction tube 67 on its movement. In this embodiment, the glue storage shell 64 is provided with a glue replenishment port for replenishing glue when the glue in the glue storage shell 64 is low.

[0057] The bottom of the lower housing 62 has an installation groove, in which a pressure sensor is installed. A rubber protective cover is fixed on the installation groove and over the pressure sensor. The pressure sensor is electrically connected to the glue pump via a controller.

[0058] The above structure enables the controller to activate the glue pump during the glue application process. When the pressure sensor detects that the pressure of the glue in the lower glue shell 62 is less than the set value (the liquid level drops, causing the pressure of the glue on the pressure sensor to decrease), the controller will pump the glue in the storage shell 64 into the lower glue shell 62 during the process of moving, thus achieving continuous glue application and avoiding the impact of glue interruption on normal operation.

[0059] It should be noted that the principle of controlling the opening and closing of the pump body by the signal collected by the pressure sensor is common knowledge in this field, so it will not be elaborated here.

[0060] The glue-coating walking unit includes a walking track 63 arranged on both sides of the board preparation bed 3 and parallel to the board preparation bed 3, and a walking support frame 61. The bottom end of the walking support frame 61 is rotatably equipped with a walking wheel, which is connected to a walking reduction motor fixed on the walking support frame 61. The walking wheel is rolled on the walking track 63. Limit switches are provided at both ends of the walking track 63 and aligned with the positions of the walking wheels. The limit switches are electrically connected to the walking reduction motor via a controller.

[0061] The negative pressure type board making machine also includes a board feeding mechanism 7, which includes a linear module 72 suspended above the board making bed 3 and arranged parallel to the board making bed 3, a mounting plate 73 connected to the bottom output end of the linear module 72, and a lifting suction cup assembly 71 set at the bottom end of the mounting plate 73.

[0062] The lifting suction cup assembly 71 includes a lifting drive cylinder 75 fixed to the bottom of the mounting plate 73, a mounting rod 74 connected to the bottom output end of the lifting drive cylinder 75, and suction cup components. The mounting rod 74 has an elongated adjustment hole 741, and multiple suction cup components are arranged inside the elongated adjustment hole 741. The suction cup components include an adjustment screw 711 and a suction cup 713. The bottom end of the adjustment screw 711 passes through the elongated adjustment hole 741 and is fixedly connected to the suction cup 713. Positioning nuts 712 are threadedly connected to both the upper and lower ends of the outer circumference of the adjustment screw 711 around the elongated adjustment hole 741.

[0063] The negative pressure plate making machine also includes a pressure plate mechanism 5. The pressure plate mechanism 5 includes multiple pressure plate assemblies evenly arranged around the edge of the plate making bed 3. Each pressure plate assembly includes an L-shaped fixed plate 51 with one end fixedly connected to the outer wall of the plate making bed 3 and a pressing cylinder 52 fixedly connected to the other end of the L-shaped fixed plate 51. A pressure plate 53 is fixed to the bottom end of the pressing cylinder 52, and the pressure plate 53 is located above the worktable 4. The multiple pressing cylinders 52 are electrically connected to the controller via a synchronization valve.

[0064] It should be noted that the above electronic components are all mature products on the market. This embodiment only requires purchasing them and connecting them according to the instructions. No modifications have been made. Furthermore, the principles for controlling the rotation direction of the air pump and the motor are common knowledge in the field, so they will not be described in detail here.

[0065] A method for operating a negative pressure type plate making machine includes the following steps:

[0066] S1. Use a forklift to unload the composite board and skin directly below the board loading mechanism 7. At this time, the skin, composite material, glue coating mechanism 6 and board making bed 3 are arranged in a straight line.

[0067] S2. Open the linear module 72 until the linear module 72 moves the lifting suction cup assembly 71 directly above the material to be laminated.

[0068] S3. Close the linear module 72, control the piston rod of the lifting drive cylinder 75 to extend, drive the suction cup 713 to descend until the suction cup 713 picks up the board to be laminated, control the piston rod of the lifting drive cylinder 75 to retract, drive the board to be laminated to rise until the height of the board to be laminated is higher than the height of the board making bed 3 and the glue coating mechanism 6, and close the lifting drive cylinder 75.

[0069] S4. Open the linear module 72. The linear module 72 drives the composite material to move towards the board preparation bed 3 until the composite material is directly above the board preparation bed 3.

[0070] S5. Control the piston rod of the lifting drive cylinder 75 to extend, drive the composite material to move down, until the composite material is placed on the worktable 4, open the suction cup 713 to control the piston rod of the lifting drive cylinder 75 to retract and reset.

[0071] S6. Open the clamping cylinder 52. The clamping cylinder 52 drives the pressure plate 53 to move downward, and the pressure plate 53 presses down the edge of the composite material to be laminated.

[0072] S7. Turn on the travel reduction motor and the air pump 65. The travel drive motor drives the lower housing 62 to travel along the travel track 63. At the same time, the air pump 65 inflates the air bag 66. The air bag 66 squeezes the glue in the lower housing 62, causing the glue to drip from the glue hole. Under the action of gravity, the glue drips onto the board to be laminated until the travel wheel touches the limit switch on the travel track 63. Then, the travel reduction motor is turned off, and the air pump 65 is used to pump air into the air bag 66. The air pump 65 continuously pumps air to create a negative pressure environment inside the lower housing 62, preventing further glue dripping from affecting the working environment.

[0073] S8. Open the linear module 72 until the linear module 72 moves the lifting suction cup assembly 71 to directly above the skin.

[0074] S9. Close the linear module 72, control the piston rod of the lifting drive cylinder 75 to extend, drive the suction cup 713 to descend until the suction cup 713 picks up the skin, control the piston rod of the lifting drive cylinder 75 to retract, drive the skin to rise until the height of the skin is higher than the height of the board bed 3 and the glue coating mechanism 6, and close the lifting drive cylinder 75.

[0075] S10. Open the linear module 72. The linear module 72 drives the skin to move towards the board bed 3 until the skin moves directly above the board to be composited.

[0076] S11. Control the piston rod of the lifting drive cylinder 75 to extend, drive the skin to move downward until the skin is placed on the composite material, open the suction cup 713 to control the piston rod of the lifting drive cylinder 75 to retract and reset.

[0077] S12. Open the negative pressure mechanism, evacuate air through the pipeline until the skin and the composite material to be composited are cured to obtain the composite material, control the pressing cylinder 52 to reset, so that the pressure plate 53 releases the limit on the composite material.

[0078] S13. Control the piston rod of the lifting drive cylinder 75 to extend until the suction cup 713 picks up the composite board, control the piston rod of the lifting drive cylinder 75 to retract, and drive the composite board to move upward and leave the board preparation bed 3.

[0079] S14. Open the linear module 72 to move the composite board away from the board to be composited and the skin until it is misaligned with the board bed 3. Control the piston rod of the lifting drive cylinder 75 to extend and move the composite board down until it is placed on the ground. Open the suction cup 713 and remove the composite board.

[0080] Therefore, this invention adopts the above-mentioned negative pressure type board making machine and its working method, and solves the problems of low matching degree and high cost caused by additional configuration by users by setting up a glue coating mechanism.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A negative pressure type PCB making machine, comprising a PCB making bed, a worktable disposed at the top of the PCB making bed, and a negative pressure mechanism, wherein the negative pressure mechanism is connected via a pipeline to an air extraction hole opened on the worktable, characterized in that: It also includes a glue-spreading mechanism, which includes a glue-spreading walking unit, a glue-dispensing unit disposed on the glue-spreading walking unit, and a glue-storing unit connected to the glue-dispensing unit. The glue-storing unit is arranged parallel to the board-making bed. The glue dispensing unit is connected to the glue storage unit via a traveling glue extraction pipe; The glue dispensing unit includes a glue dispensing shell and an air-expanding glue dispensing assembly disposed at the top of the inside of the glue dispensing shell. The air-expanding glue dispensing assembly includes a vacuum pump and an air bladder connected to the vacuum pump. Multiple glue holes are evenly distributed at the bottom of the lower glue shell; The glue storage unit includes a glue storage shell. The top side of the glue storage shell has a glue-feeding elongated hole arranged parallel to the board making bed. One end of the glue-feeding tube extends into the interior of the glue storage shell through the glue-feeding elongated hole, and the other end is connected to the lower glue shell below the airbag. The bottom of the travel-type glue extraction tube extends into the glue storage shell and is connected to a funnel-shaped glue inlet tube, and a glue extraction pump is installed on the travel-type glue extraction tube. The top of the inside of the glue storage shell is fixed with a hanging rail. The traveling glue extraction tube extends into the top of one end of the glue storage shell and is horizontally slidably connected to the hanging rail via a hanging rod. The hanging rail is arranged parallel to the board making bed. A method for operating a negative pressure type plate making machine includes the following steps: S1. Use a forklift to unload the composite board and skin directly below the board loading mechanism. At this time, the skin, composite material, glue coating mechanism and board making bed are arranged in a straight line. S2. Open the linear module until the linear module moves the lifting suction cup assembly directly above the material to be laminated. S3. Close the linear module, control the piston rod of the lifting drive cylinder to extend, drive the suction cup downward until the suction cup picks up the board to be laminated, control the piston rod of the lifting drive cylinder to retract, drive the board to be laminated upward until the height of the board to be laminated is higher than the height of the board making bed and the glue coating mechanism, and close the lifting drive cylinder. S4. Open the linear module. The linear module will move the composite material to be laminated towards the laminating bed until the composite material is directly above the laminating bed. S5. Control the piston rod of the lifting drive cylinder to extend, drive the composite material to move down, until the composite material is placed on the worktable, open the suction cup to control the piston rod of the lifting drive cylinder to retract and reset. S6. Open the clamping cylinder. The clamping cylinder drives the pressure plate to move downward, and the pressure plate presses down on the edge of the composite material. S7. Turn on the travel reduction motor and the air pump. The travel drive motor drives the lower rubber shell to travel along the travel track. At the same time, use the air pump to inflate the air bag. The air bag squeezes the glue in the lower rubber shell, causing the glue to drip from the lower glue hole. Under the action of gravity, the glue drips onto the board to be laminated until the travel wheel touches the limit switch on the travel track. Turn off the travel reduction motor and use the air pump to extract air from the air bag. S8. Open the linear module until the linear module moves the lifting suction cup assembly to directly above the skin. S9. Close the linear module, control the piston rod of the lifting drive cylinder to extend, drive the suction cup downward until the suction cup picks up the skin, control the piston rod of the lifting drive cylinder to retract, drive the skin upward until the height of the skin is higher than the height of the board making bed and the glue coating mechanism, and close the lifting drive cylinder. S10. Open the linear module. The linear module drives the skin to move towards the board preparation bed until the skin moves directly above the board to be composited. S11. Control the piston rod of the lifting drive cylinder to extend, drive the skin to move downward until the skin is placed on the composite material, open the suction cup to control the piston rod of the lifting drive cylinder to retract and reset. S12. Open the negative pressure mechanism, evacuate air through the pipeline until the skin and the composite material to be composited are cured to obtain the composite material, control the clamping cylinder to reset, so that the pressure plate releases the limit on the composite material. S13. Control the piston rod of the lifting drive cylinder to extend until the suction cup picks up the composite board, control the piston rod of the lifting drive cylinder to retract, and drive the composite board to move upward and leave the board making bed. S14. Open the linear module to move the composite board away from the board to be laminated and the skin until it is misaligned with the board bed. Control the piston rod of the lifting drive cylinder to extend and move the composite board down until it is placed on the ground. Open the suction cup and remove the composite board.

2. The negative pressure type plate making machine according to claim 1, characterized in that: An installation groove is provided at the bottom of the inner side of the lower housing. A pressure sensor is installed in the installation groove, and a rubber protective cover is fixed on the installation groove and over the pressure sensor. The pressure sensor is electrically connected to the glue pump via the controller.

3. The negative pressure type plate making machine according to claim 1, characterized in that: The glue-coating walking unit includes walking tracks arranged on both sides of the board-making bed and parallel to the board-making bed, as well as a walking support frame. The bottom end of the walking support frame is rotatably equipped with walking wheels, which are connected to a walking reduction motor fixed on the walking support frame. The traveling wheels are mounted on the traveling track. Limit switches are installed at both ends of the traveling track and aligned with the traveling wheels. The limit switches are electrically connected to the traveling gear motor via a controller.

4. A negative pressure type plate-making machine according to claim 1, characterized in that: It also includes a sheet material feeding mechanism, which includes a linear module suspended above the sheet material preparation bed and arranged parallel to the sheet material preparation bed, a mounting plate connected to the bottom output end of the linear module, and a lifting suction cup assembly set at the bottom end of the mounting plate.

5. A negative pressure type plate-making machine according to claim 4, characterized in that: The lifting suction cup assembly includes a lifting drive cylinder fixed to the bottom of the mounting plate, a mounting rod connected to the bottom output end of the lifting drive cylinder, and suction cup components. The mounting rod has an elongated adjustment hole, and multiple suction cup components are installed in the elongated adjustment hole. The suction cup component includes an adjusting screw and a suction cup. The bottom end of the adjusting screw passes through an elongated adjusting hole and is fixedly connected to the suction cup. Positioning nuts are threaded onto both the upper and lower ends of the elongated adjusting hole on the outer circumference of the adjusting screw.

6. A negative pressure type plate-making machine according to claim 1, characterized in that: It also includes a pressure plate mechanism, which includes multiple pressure plate assemblies evenly arranged around the edge of the plate making bed. Each pressure plate assembly includes an L-shaped fixed plate with one end fixedly connected to the outer wall of the plate making bed and a pressing cylinder fixedly connected to the other end of the L-shaped fixed plate. The bottom end of the pressing cylinder is fixed with a pressure plate, which is located above the worktable. Multiple clamping cylinders are electrically connected to the controller via a synchronization valve.

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