Automatic spraying and drying integrated production line for elevator car wall

Abstract

The invention belongs to the technical field of elevator car wall production, and particularly relates to an elevator car wall automatic spraying and drying integrated production line which comprises a traction conveying assembly used for dragging a car wall plate to move horizontally, and a shaping assembly, a clamping part forming assembly, a spraying assembly, a drying assembly and a slitting assembly which are sequentially arranged in the traction direction. The shaping assembly is used for shaping a horizontal main body plate part of the car wall plate, the clamping part forming assembly is used for equidistantly stamping two side plate parts of the car wall plate to form clamping parts, the spraying assembly is used for forming a coating, and the drying assembly is used for heating and curing the coating and forming a stable paint film structure. The slitting assembly is used for slitting the car wall plates. The car wall plate is pre-shaped before spraying so as to guarantee the spraying effect, the side plates of the car wall plate are pre-treated before spraying so as to form the clamping parts, the car wall plate can be efficiently sprayed and dried, and the follow-up car wall assembling precision is improved.

Description

Technical Field

[0001] This invention belongs to the field of elevator car wall production technology, and in particular relates to an integrated production line for automatic spraying and drying of elevator car walls. Background Technology

[0002] In the production of elevator car walls, the spraying process is a crucial step in improving the product's appearance, durability, and safety. Spraying creates a uniform, dense coating on the car wall surface, effectively isolating the metal substrate from external environmental corrosion and preventing oxidation and rust, thus extending the elevator's lifespan. The spraying process also imparts rich colors and gloss to the car walls, meeting the aesthetic needs of different architectural styles and enhancing the overall decorative effect. Furthermore, the environmentally friendly coatings used in the spraying process possess excellent fire resistance, stain resistance, and wear resistance, further enhancing the elevator's safety and ease of cleaning. High-quality spraying not only improves the overall quality of the elevator car walls but also provides users with a more comfortable and safer riding experience. The drying process involves heating and curing the coating, promoting solvent evaporation and completing the resin cross-linking reaction to form a stable paint film structure.

[0003] The existing integrated automatic spraying and drying production line for elevator car walls has been found to have shortcomings during use. First, it cannot efficiently spray and dry the car wall panels. Second, it cannot pre-shape the car wall panels before spraying to ensure the subsequent spraying effect. Third, it cannot pre-treat the side panels of the car wall panels before spraying to form snap-fit ​​grooves or snap-fit ​​protrusions that facilitate subsequent snap-fitting.

[0004] In view of this, the inventors hope to optimize and improve the existing integrated production line for automatic spraying and drying of elevator car walls. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned problems in the traditional technology and provide an integrated production line for automatic spraying and drying of elevator car walls.

[0006] To achieve the above-mentioned technical objectives and effects, the present invention is implemented through the following technical solution: This invention provides an integrated automatic spraying and drying production line for elevator car walls, comprising a traction and conveying assembly for horizontally displacing car wall panels, and a shaping assembly, a snap-fit ​​forming assembly, a spraying assembly, a drying assembly, and a cutting assembly arranged sequentially along the traction direction; the shaping assembly is used to shape the horizontal main body of the car wall panels, the snap-fit ​​forming assembly is used to equidistantly stamp snap-fit ​​parts on both sides of the car wall panels, the spraying assembly is used to form a uniform and dense coating on the car wall surface, the drying assembly is used to heat-cur the coating and form a stable paint film structure, and the cutting assembly is used to cut the car wall panels with the stable paint film structure.

[0007] Furthermore, in the aforementioned integrated production line for automatic spraying and drying of elevator car walls, the shaping components are symmetrically distributed on both sides of the car wall panels. The shaping components include a first linear guide pair, a first lifting push rod, a support bushing, a roller shaft, and a shaping roller. The first lifting push rod is installed on the outside of the slider of the first linear guide pair. The movable end of the first lifting push rod is equipped with a support bushing, and the support bushing movably supports the roller shaft. The two ends of the roller shaft are symmetrically equipped with shaping rollers.

[0008] Furthermore, in the aforementioned integrated production line for automatic spraying and drying of elevator car walls, the snap-fit ​​forming assembly is symmetrically arranged on one side of the car wall panel where the side plate is located. The snap-fit ​​forming assembly includes a second linear guide pair, a second lifting push rod, a first mounting plate, a pressure plate, a push rod support plate, a forming push rod, and a forming punch. The second lifting push rod is installed on the outside of the slider of the second linear guide pair. The movable end of the second lifting push rod is equipped with a pressure plate and a push rod support plate via the first mounting plate. The pressure plate has a pressure groove that mates with the outer wall of the snap-fit ​​part. The push rod support plate is equipped with a forming push rod, and the movable end of the forming push rod is equipped with a forming punch that mates with the inner wall of the snap-fit ​​part.

[0009] Furthermore, in the aforementioned integrated production line for automatic spraying and drying of elevator car walls, the spraying assembly includes components symmetrically distributed on both sides of the car wall panel. The spraying assembly includes a third linear guide pair, a third lifting push rod, a second mounting plate, a first paint cylinder, and a pumping nozzle. The third lifting push rod is installed on the outside of the slider of the third linear guide pair. The movable end of the third lifting push rod is connected to the first paint cylinder via the second mounting plate. The first paint cylinder is connected to the pumping nozzle.

[0010] Furthermore, in the aforementioned integrated production line for automatic spraying and drying of elevator car walls, the third linear guide pair located on the upper layer is provided with three sliders. A third lifting push rod is installed on the outside of the middle slider, and a fourth lifting push rod is installed on the outside of the sliders near both ends. A grooved plate seat is installed on the movable end of the fourth lifting push rod, and a lead screw motor is installed on the outside of the grooved plate seat. A lead screw is installed on the output end of the lead screw motor. The lead screw has two lead screw sections with opposite rotation directions. A first spraying plate is sleeved on the outside of one of the lead screw sections. The first spraying plate has an outer spraying groove that mates with the outer wall of the snap-fit ​​part. A second spraying plate is sleeved on the outside of the other lead screw section. A spraying head that mates with the inner wall of the snap-fit ​​part is installed on the second spraying plate.

[0011] Furthermore, in the aforementioned integrated production line for automatic spraying and drying of elevator car walls, a second paint cylinder is installed on the outer side of the web of the trough-shaped plate seat. The pumping end of the second paint cylinder is connected to the upper end of the built-in pipes of the first spraying plate and the second spraying plate respectively via a branch pipe. The lower end of the built-in pipe of the first spraying plate extends to the inner wall of the outer spraying groove, and the lower end of the built-in pipe of the second spraying plate extends to the outer wall of the spraying head.

[0012] Furthermore, in the aforementioned integrated production line for automatic spraying and drying of elevator car walls, the tops of the first and second spraying plates slide against the inner wall of the web of the trough-shaped plate seat, and the inner wall of the trough-shaped plate seat is provided with a movable cavity to facilitate the movement of the branch pipe.

[0013] Furthermore, in the aforementioned integrated production line for automatic spraying and drying of elevator car walls, the two output branches of the branch pipe are adaptively expandable and contractible flexible hoses.

[0014] Furthermore, in the aforementioned integrated production line for automatic spraying and drying of elevator car walls, the drying component includes components symmetrically distributed on both sides of the car wall panel, and the spraying component includes a fourth linear guide pair, a fifth lifting push rod, a third mounting plate, a hot air blower, and an air outlet. The fifth lifting push rod is installed on the outside of the slider of the fourth linear guide pair, and the hot air blower is mounted on the movable end of the fifth lifting push rod via the third mounting plate. An air outlet is installed on the air outlet end of the hot air blower.

[0015] Furthermore, the aforementioned integrated production line for automatic spraying and drying of elevator car walls also includes a controller, which is connected to the shaping component, the snap-fit ​​forming component, the spraying component, the drying component, and the slitting component.

[0016] The beneficial effects of this invention are: 1. Integrated Pre-shaping and Snap-fit ​​Forming: By using a pre-shaping assembly and a snap-fit ​​forming assembly, the system solves problems such as uneven coating and low installation matching caused by panel deformation or missing edge structures in traditional production lines. The traction conveyor assembly connects each process, achieving full automation of the car wall panel process from shaping → snap-fit ​​groove forming → spraying → drying → slitting, significantly reducing transfer time and manual intervention. The shaping roller adjusts the pressure via the first lifting push rod, symmetrically rolling the horizontal main panel to eliminate stress deformation and ensure a smooth coating substrate. The snap-fit ​​forming assembly uses forming punches to equidistantly stamp the snap-fit ​​parts on the side panels, enhancing the subsequent car wall assembly accuracy.

[0017] 2. Two-stage spraying system: The main spraying unit (pump nozzle) is responsible for spraying the main body of the panel; the special structure spraying unit (first spraying plate + second spraying plate) is driven by a screw motor to move in both directions, so that the outer spraying groove and the spraying head can be precisely adapted to the inner and outer curved surfaces of the snap-fit ​​part, solving the problem of spraying dead corners of the snap-fit ​​groove. The branch pipe adopts a telescopic flexible hose, which automatically adjusts its length as the spraying plate moves to ensure a continuous supply of paint.

[0018] 3. Temperature-controlled drying for optimized paint film performance: The drying unit uses a hot air blower with an adjustable air outlet. The distance between the air outlets is adjusted via the fifth lifting push rod to achieve uniform curing of the coating. This method is more energy-efficient than traditional drying tunnels and avoids paint film cracking caused by high temperatures.

[0019] Of course, any product implementing this invention does not necessarily need to achieve all of the above advantages at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a connection block diagram of the main components in this invention; Figure 2 This is a schematic diagram of the structure of the car wall panel in this invention before processing; Figure 3 This is a schematic diagram of the structure of the car wall panel after processing in this invention; Figure 4 This is a schematic diagram of the splicing of the car wall panel components in this invention; Figure 5 This is a schematic diagram of the shaping component in this invention; Figure 6 This is a schematic diagram showing the usage state of the snap-fit ​​forming component in this invention; Figure 7 This is a schematic diagram of the structure of the snap-fit ​​forming assembly in this invention; Figure 8 This is a schematic diagram of the spraying component in use in this invention; Figure 9 This is a schematic diagram of the spraying component in this invention; Figure 10 This is a schematic diagram of the drying component in this invention; In the attached diagram, the components represented by each number are as follows: 1-Traction transmission assembly; 2-Shaping assembly, 201-First linear guide pair, 202-First lifting push rod, 203-Support bushing, 204-Roller, 205-Shaping roller; 3-Snap-fit ​​forming assembly, 301-Second linear guide pair, 302-Second lifting push rod, 303-First mounting plate, 304-Pressure plate, 305-Push rod support plate, 306-Forming push rod, 307-Forming punch; 4-Spraying assembly, 401-Third linear guide pair, 402-Third lifting push rod, 403-Second mounting plate, 404-First paint cylinder, 405-Pumping nozzle, 406-Fourth lifting push rod, 407-Channel plate seat, 408-Screw motor, 409-Screw, 410-First spraying plate, 411-Second spraying plate, 412-Spraying head; 5-Drying assembly, 501-Fourth linear guide pair, 502-Fifth lifting push rod, 503-Third mounting plate, 504-Hot air blower, 505-Air outlet; 6-Slitting component; 7-Controller; 8-Car wall panel, 801-Horizontal main body panel, 802-Side panel, 803-Snap-fit ​​part. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] like Figures 1-10 As shown, this embodiment is an integrated automatic spraying and drying production line for elevator car walls, including a traction and conveying assembly 1 for horizontally displacing car wall panels 8, and a shaping assembly 2, a snap-fit ​​forming assembly 3, a spraying assembly 4, a drying assembly 5, and a cutting assembly 6 arranged sequentially along the traction direction. The shaping assembly 2 is used to shape the horizontal main body plate 801 of the car wall panel 8; the snap-fit ​​forming assembly 3 is used to equidistantly stamp snap-fit ​​parts 803 on both sides of the car wall panel 802; the spraying assembly 4 is used to form a uniform and dense coating on the surface of the car wall; the drying assembly 5 is used to heat-cur the coating and form a stable paint film structure; and the cutting assembly 6 is used to cut the car wall panel with the stable paint film structure.

[0024] In this embodiment, the shaping components 2 are symmetrically distributed on both sides of the car wall panel 8. The shaping components 2 include a first linear guide pair 201, a first lifting push rod 202, a support bushing 203, a roller shaft 204, and a shaping roller 205. The first lifting push rod 202 is installed on the outside of the slider of the first linear guide pair 201. The support bushing 203 is installed on the movable end of the first lifting push rod 202. The roller shaft 204 is movably supported in the support bushing 203. The shaping rollers 205 are symmetrically installed at both ends of the roller shaft 204.

[0025] In this embodiment, the snap-fit ​​forming assembly 3 is symmetrically arranged on one side of the side panel portion 802 in the car wall panel 8. The snap-fit ​​forming assembly 3 includes a second linear guide pair 301, a second lifting push rod 302, a first mounting plate 303, a pressure plate 304, a push rod support plate 305, a forming push rod 306, and a forming punch 307. The second lifting push rod 302 is installed on the outside of the slider of the second linear guide pair 301. The movable end of the second lifting push rod 302 is mounted with the pressure plate 304 and the push rod support plate 305 via the first mounting plate 303. The pressure plate 304 has a pressure groove that mates with the outer wall of the snap-fit ​​portion 803. The forming push rod 306 is mounted on the push rod support plate 305. The movable end of the forming push rod 306 is mounted with a forming punch 307 that mates with the inner wall of the snap-fit ​​portion 803.

[0026] In this embodiment, the spraying assembly 4 includes components symmetrically distributed on both sides of the car wall panel 8. The spraying assembly 4 includes a third linear guide pair 401, a third lifting push rod 402, a second mounting plate 403, a first paint cylinder 404, and a pumping nozzle 405. The third lifting push rod 402 is installed on the outside of the slider of the third linear guide pair 401. The movable end of the third lifting push rod 402 is connected to the first paint cylinder 404 via the second mounting plate 403. The first paint cylinder 404 is connected to the pumping nozzle 405.

[0027] In this embodiment, the upper third linear guide pair 401 is provided with three sliders. The third lifting push rod 402 is installed on the outside of the middle slider, and the fourth lifting push rod 406 is installed on the outside of the sliders near both ends. The movable end of the fourth lifting push rod 406 is equipped with a slotted plate seat 407, the outside of the slotted plate seat 407 is equipped with a lead screw motor 408, and the output end of the lead screw motor 408 is equipped with a lead screw 409. The lead screw 409 is provided with two lead screw sections with opposite directions of rotation. The outer side of one lead screw section is fitted with a first spray plate 410, and the first spray plate 410 has an outer spray groove that mates with the outer wall of the snap-fit ​​part 803. The outer side of the other lead screw section is fitted with a second spray plate 411, and the second spray plate 411 is equipped with a spray head 412 that mates with the inner wall of the snap-fit ​​part 803.

[0028] In this embodiment, a second paint cylinder 414 is installed on the outer side of the web of the groove plate base 407. The pumping end of the second paint cylinder 414 is connected to the upper end of the built-in pipes of the first spray plate 410 and the second spray plate 411 via a branch pipe 415. The lower end of the built-in pipe of the first spray plate 410 extends to the inner wall of the outer spraying groove, and the lower end of the built-in pipe of the second spray plate 411 extends to the outer wall of the spray head 412.

[0029] In this embodiment, the top ends of the first spray plate 410 and the second spray plate 411 slide against the inner wall of the web of the grooved plate seat 407, and the inner wall of the grooved plate seat 407 is provided with a movable cavity to facilitate the movement of the branch pipe 415.

[0030] In this embodiment, the two output branches of the branch pipe 415 are flexible hoses that can adapt to expansion and contraction.

[0031] In this embodiment, the drying component 5 is symmetrically distributed on both sides of the car wall panel 8, and the spraying component 4 includes a fourth linear guide pair 501, a fifth lifting push rod 502, a third mounting plate 503, a hot air blower 504, and an air outlet 505. The fifth lifting push rod 502 is installed on the outside of the slider of the fourth linear guide pair 501. The hot air blower 504 is installed on the movable end of the fifth lifting push rod 502 via the third mounting plate 503, and the air outlet 505 is installed on the air outlet end of the hot air blower 504.

[0032] In this embodiment, the slide length directions of the first linear guide pair 201, the second linear guide pair 301, the third linear guide pair 401, and the fourth linear guide pair 501 are perpendicular to the traction direction.

[0033] In this embodiment, a controller 7 is also included, which is connected to the traction conveying assembly 1, the shaping assembly 2, the snap-fit ​​forming assembly 3, the spraying assembly 4, the drying assembly 5, and the slitting assembly 6.

[0034] The working principle of this embodiment is as follows: Step S1: The car wall panel 8 is sent into the shaping station by the traction conveyor assembly 1 → the first linear guide pair 201 drives the shaping units on both sides to approach the panel synchronously → the first lifting push rod 202 presses down, driving the shaping roller 205 to roll the horizontal main body panel 801 to eliminate warping or dents.

[0035] Step S2: The plate enters the snap-fit ​​forming station → the second lifting push rod 302 pushes the forming punch 307 to press down the side plate 802 → the stamping forms equidistant snap-fit ​​grooves / protrusions 803, providing a positioning structure for subsequent car wall assembly.

[0036] Step S3: Multi-directional spraying, panel spraying: The third lifting push rod 402 adjusts the height of the pump nozzle 405 to cover the main panel surface; Spray coating on the snap-fit ​​parts: The lead screw motor 408 drives the bidirectional lead screw 409 to rotate → the first spray plate 410 and the second spray plate 411 move towards each other and respectively fit into the inner and outer walls of the snap-fit ​​part 803. The second paint canister 414 supplies paint to the spray tank / spray head 412 through the branch pipe 415, ensuring full coverage of the edges and corners.

[0037] Step S4: Precise drying, hot air is sprayed from the hot air blower 504 through the air outlet 505 → the fifth lifting push rod 502 adjusts the air outlet distance according to the thickness of the plate → gradient heating to cure the coating and form a dense paint film (resin cross-linking reaction is completed).

[0038] Step S5: Slitting and unloading. After drying, the boards are cut by the slitting component 6 according to the preset size, completing the production cycle.

[0039] This embodiment enables intelligent production of the entire elevator car wall process, from shaping to molding, spraying, curing, and slitting, providing a high-precision, low-energy-consumption solution for high-end elevator manufacturing.

[0040] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An integrated automatic spraying and drying production line for elevator car walls, characterized in that, The system includes a traction and transmission assembly for horizontally displacing car wall panels, and a shaping assembly, a snap-fit ​​forming assembly, a spraying assembly, a drying assembly, and a cutting assembly arranged sequentially along the traction direction. The shaping assembly is used to shape the horizontal main body of the car wall panel. The snap-fit ​​forming assembly is used to equidistantly stamp snap-fit ​​parts on both sides of the car wall panel. The spraying assembly is used to form a uniform and dense coating on the surface of the car wall. The drying assembly is used to heat-cur the coating and form a stable paint film structure. The cutting assembly is used to cut the car wall panel with the stable paint film structure.

2. The integrated automatic spraying and drying production line for elevator car walls according to claim 1, characterized in that, The shaping components are symmetrically distributed on both sides of the car wall panel. The shaping components include a first linear guide pair, a first lifting push rod, a support bushing, a roller shaft, and a shaping roller. The first lifting push rod is installed on the outside of the slider of the first linear guide pair. The supporting bushing is installed at the movable end of the first lifting push rod. The roller shaft is movably supported in the supporting bushing. The shaping rollers are symmetrically installed at both ends of the roller shaft.

3. The integrated automatic spraying and drying production line for elevator car walls according to claim 2, characterized in that, The snap-fit ​​forming assembly is symmetrically arranged on one side of the car wall panel where the side plate is located. The snap-fit ​​forming assembly includes a second linear guide pair, a second lifting push rod, a first mounting plate, a pressure plate, a push rod support plate, a forming push rod, and a forming punch. The second lifting push rod is installed on the outside of the slider of the second linear guide pair. The movable end of the second lifting push rod is equipped with a pressure plate and a push rod support plate via the first mounting plate. The pressure plate has a pressure groove that mates with the outer wall of the snap-fit ​​part. The push rod support plate is equipped with a forming push rod. The movable end of the forming push rod is equipped with a forming punch that mates with the inner wall of the snap-fit ​​part.

4. The integrated automatic spraying and drying production line for elevator car walls according to claim 3, characterized in that, The spraying assembly includes components symmetrically distributed on both sides of the car wall panel. The spraying assembly includes a third linear guide pair, a third lifting push rod, a second mounting plate, a first paint cylinder, and a pumping nozzle. The third lifting push rod is installed on the outside of the slider of the third linear guide pair. The movable end of the third lifting push rod is connected to the first paint cylinder via the second mounting plate. The first paint cylinder is connected to the pumping nozzle.

5. The integrated automatic spraying and drying production line for elevator car walls according to claim 4, characterized in that, The third linear guide pair located on the upper layer has three sliders. A third lifting push rod is installed on the outside of the middle slider, and a fourth lifting push rod is installed on the outside of the sliders near both ends. A grooved plate seat is installed on the movable end of the fourth lifting push rod, and a lead screw motor is installed on the outside of the grooved plate seat. A lead screw is installed on the output end of the lead screw motor. The lead screw has two lead screw sections with opposite directions of rotation. A first spray plate is sleeved on the outside of one of the lead screw sections. The first spray plate has an outer spray groove that mates with the outer wall of the snap-fit ​​part. A second spray plate is sleeved on the outside of the other lead screw section. A spray head that mates with the inner wall of the snap-fit ​​part is installed on the second spray plate.

6. The integrated automatic spraying and drying production line for elevator car walls according to claim 5, characterized in that, A second paint cylinder is installed on the outer side of the web of the grooved plate seat. The pumping end of the second paint cylinder is connected to the upper end of the built-in pipes of the first spray plate and the second spray plate respectively through a branch pipe. The lower end of the built-in pipe of the first spray plate extends to the inner wall of the outer spray groove, and the lower end of the built-in pipe of the second spray plate extends to the outer wall of the spray head.

7. The integrated automatic spraying and drying production line for elevator car walls according to claim 6, characterized in that, The top ends of the first and second spray plates slide against the inner wall of the web of the channel plate seat, and the inner wall of the channel plate seat is provided with a movable cavity to facilitate the movement of the branch pipe.

8. The integrated automatic spraying and drying production line for elevator car walls according to claim 7, characterized in that, The two output branches of the branch pipe are flexible telescopic hoses that can adapt to expansion and contraction.

9. The integrated automatic spraying and drying production line for elevator car walls according to claim 8, characterized in that, The drying assembly includes components symmetrically distributed on both sides of the car wall panel. The spraying assembly includes a fourth linear guide rail pair, a fifth lifting push rod, a third mounting plate, a hot air blower, and an air outlet. The fifth lifting push rod is installed on the outside of the slider of the fourth linear guide rail pair. The hot air blower is mounted on the movable end of the fifth lifting push rod via the third mounting plate. An air outlet is installed on the air outlet end of the hot air blower.

10. The integrated automatic spraying and drying production line for elevator car walls according to claim 9, characterized in that, It also includes a controller, which is connected to the shaping assembly, the snap-fit ​​forming assembly, the spraying assembly, the drying assembly, and the slitting assembly, respectively.

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