Carriage plate moving compression molding machining system and machining method

Abstract

The invention discloses a carriage plate moving pressing die machining system and method, and belongs to the technical field of vehicle accessory manufacturing. The carriage plate moving pressing die machining system comprises a lower die base, a lower die, a moving upper die frame, a pressing die hydraulic cylinder, an upper die, a side hooking and pulling unit and a foaming material generating assembly; the lower die is installed on the lower die base, the lower die is provided with a lower die table top and a movable upper die frame to form a horizontal movable frame body, the foaming material generating assembly is installed on the movable upper die frame and provided with a foaming material outlet, the foaming material outlet transversely supplies foaming materials to a lower carriage plate, and the die pressing hydraulic cylinder and the upper die are installed on the movable upper die frame. The die pressing hydraulic cylinder is connected with the upper die and drives the upper die to move vertically, N side hooking units are evenly arranged on the side portion of the upper die in the circumferential direction, each side hooking unit is provided with a hook used for hooking the edge of an upper compartment plate and a hook claw driving component used for driving the hook to move outwards, and a hooking part is arranged on the side portion of the lower die. The carriage plate product performance processed by the system is comprehensively improved, the heat preservation performance, the light weight, the environmental protection performance and the like are excellent, the production process is optimized, and an efficient, economical and green solution is provided for the refrigerator car manufacturing industry.

Description

Technical Field

[0001] The invention belongs to the technical field of vehicle parts manufacturing, and in particular relates to a vehicle body plate mobile die processing system and a processing method. Background Art

[0002] The compartment panels of refrigerated trucks are the core components of their insulation systems. They are usually composed of high-strength panels, i.e. two layers of compartment panels and interlayer insulation materials, and have good thermal insulation, durability and air tightness. The compartment panels can effectively isolate the influence of the external environment on the internal temperature of the compartment, ensuring that the temperature inside the compartment is stable within the set range, thereby maintaining the quality and safety of the refrigerated goods. Its excellent insulation performance is not only the key guarantee for the cold chain transportation efficiency of refrigerated trucks, but also directly affects the operating costs and energy consumption levels. Therefore, it plays a vital role in the design and manufacture of refrigerated trucks.

[0003] There are many problems in the current processing and manufacturing of refrigerated truck compartment panels. First, traditional compartment panels are made of three-layer material panels processed through a bonding process. This structure results in a large overall weight of the panel, which is not conducive to the lightweight design of the vehicle and increases fuel consumption and transportation costs. Secondly, the amount of bonding materials used is large, which not only increases the production cost, but also is not environmentally friendly due to the large amount of chemical adhesives used, which may cause potential harm to the environment. In addition, the weight of the bonding material further increases the total weight of the compartment panel, further affecting the energy-saving performance of the refrigerated truck. At the same time, the bonding process has high requirements for equipment and operating conditions, low processing efficiency, and it is difficult to meet the needs of large-scale production. In actual production, problems such as uneven bonding or material delamination are prone to occur, resulting in poor product quality and affecting the service life and thermal insulation performance of the compartment panel. Overall, the current manufacturing process has significant deficiencies in many aspects such as environmental protection, lightweight, cost control, processing efficiency and product quality, and urgently needs to be improved and optimized. Summary of the invention

[0004] In view of the problems existing in the prior art of the processing and manufacturing of refrigerated truck compartment panels, such as heavy weight, poor environmental protection, high cost, low processing efficiency and poor product quality, the present invention provides a mobile die processing system for compartment panels.

[0005] The present invention is implemented in this way. A car body panel moving die processing system is characterized in that it includes a lower die assembly and a movable upper die assembly, the lower die assembly includes a lower die seat and a lower die, the movable upper die assembly includes an upper movable die frame, a die hydraulic cylinder, an upper die, a side hook pulling unit, and a foaming material generating assembly; the lower die is installed on the lower die seat, the lower die is provided with a lower die table for setting the lower car body, the movable upper die frame forms a horizontal movable frame moving above the lower die table, the foaming material generating assembly is installed on the movable upper die frame, The foaming material generating assembly is provided with a foaming material outlet installed at the front end of the movable upper mold frame, and the foaming material outlet supplies the foaming material to the lower compartment plate laterally. The die hydraulic cylinder and the upper mold are installed on the movable upper mold frame. The die hydraulic cylinder is connected to and drives the upper mold to move vertically. N side hook pulling units are evenly arranged in a circumferential direction on the side of the upper mold. The side hook pulling unit is provided with a hook for hooking the edge of the upper compartment plate and a hook claw driving component for driving the hook to move outward. The side of the lower mold is provided with a hook pulling part combined with the hook.

[0006] In the above technical solution, preferably, horizontal linear guide rails are arranged on both sides of the lower mold base, and the movable upper mold frame is a gantry-shaped walking frame which is equipped on the horizontal linear guide rails and moves horizontally and linearly along the horizontal linear guide rails, and the gantry-shaped walking frame includes supporting side frames located on both sides and a platform arranged between the two supporting side frames, and the die pressing hydraulic cylinder is installed on the platform.

[0007] In the above technical solution, preferably, the lower die table is provided with a limit assembly, and the limit assembly includes a rectangular limit frame, and the inner side of the rectangular limit frame forms a die groove whose shape is adapted to the contour of the lower compartment plate.

[0008] In the above technical solution, preferably, the foaming material generating assembly is provided with a discharge conduit, the discharge conduit is horizontally arranged and perpendicular to the horizontal moving direction of the movable upper mold frame, the discharge conduit is transversely arranged above the lower mold table, and the foaming material outlet is axially spaced apart on the discharge conduit.

[0009] In the above technical solution, preferably, the upper mold is installed on the movable upper mold frame through a vertical guiding mechanism.

[0010] In the above technical solution, preferably, the hook claw driving component is a hook locking hydraulic cylinder, the cylinder body of the hook locking hydraulic cylinder is installed on the side of the upper mold through a pin shaft, the upper mold is installed with a sway driving hydraulic cylinder that drives the hook locking hydraulic cylinder to sway around the pin shaft, the hook is installed on the cylinder rod of the hook locking hydraulic cylinder, and the hook pulling part is an axis rod arranged on the side of the lower mold.

[0011] In the above technical solution, preferably, the interior of the upper mold and / or the lower mold is evenly provided with a heating component for heating the upper compartment plate and / or the lower compartment plate.

[0012] In the above technical solution, preferably, the vertical guiding mechanism includes vertical racks arranged at the four corners of the movable upper mold frame, and guide gears meshing with the vertical racks are installed at the four corners of the movable upper mold frame. All the guide gears are connected through a synchronous transmission shaft and a bevel gear, and the lower end of the vertical rack is connected to the upper mold.

[0013] In the above technical solution, preferably, at least two lower mold assemblies are included, and the movable upper mold frame moves to the top of one of the lower mold assemblies via a horizontal straight line.

[0014] The second object of the present invention is to provide a method for manufacturing a car body plate, characterized in that it comprises the following steps:

[0015] S1. The upper mold is mounted on the side of the lower mold by the movable upper mold frame, and the lower compartment plate is placed horizontally on the lower mold table;

[0016] S2. The upper compartment plate is hooked by the side hook pull unit, and the upper mold frame is moved to the top of the lower compartment plate, and the horizontal movement direction is parallel to the side of the rectangular lower compartment plate;

[0017] S3. The foam material outlet of the foam material generating assembly supplies the foam material to the upper surface of the lower compartment plate from the area above the lower compartment plate to the area above the lower compartment plate;

[0018] S4. After the upper panel is moved to the top of the lower panel and aligned, the side hook pull unit hooks and lowers the upper panel, and the die hydraulic cylinder drives the lower die to descend and press the upper panel onto the foam material on the upper surface of the lower panel;

[0019] S5. The side hook-pull unit works, and the upper compartment plate, the foaming material and the lower compartment plate are locked and pressed together by combining the side hook-pull unit with the hook-pull part of the lower mold.

[0020] The mobile die pressing system for car body panels has many significant advantages and effects.

[0021] Firstly, the system uses an innovative mode of action to achieve the simultaneous formation of the foaming agent during the alignment of the inner and outer layers of the compartment panels, thereby greatly improving production efficiency and meeting the needs of large-scale and efficient production.

[0022] The system significantly shortens the time difference between the foam layer and the inner and outer body panels after it is formed. This key improvement plays a decisive role in the quality of the foam layer and the connection between the foam layer and the inner and outer body panels. In the traditional process, after the foam layer is formed, it takes a long waiting time before it can be pressed with the inner and outer body panels. This time difference can easily cause the surface of the foam layer to be exposed to the air and cause local oxidation, hardening or collapse, which ultimately affects its uniformity, density and adhesion performance. In addition, the long time difference will also lead to insufficient initial adhesion between the foam layer and the body panel. The connection interface may form air gaps or delamination due to local shrinkage of the foam layer, which seriously weakens the stability of the overall structure.

[0023] By shortening the time difference between the foaming layer and the pressing after it is formed, the system achieves instant pressing of the foaming layer in the optimal state (the foaming reaction has not yet completed solidification but has a certain strength and adhesion performance). This instant pressing can significantly improve the interface adhesion quality between the foaming layer and the inner and outer compartment panels, ensuring a tight and firm connection between the two, avoiding problems such as air gaps, delamination or uneven interfaces. At the same time, this rapid pressing can also utilize the expansion pressure generated by the foaming agent during the curing process to make it more evenly fill the space between the inner and outer compartment panels, further enhancing the density and overall strength of the foaming layer. In addition, due to the precise control of the pressing time, the bubble structure inside the foaming layer can maintain the optimal distribution state, thereby improving its thermal insulation performance and pressure resistance, and making the thermal insulation performance and durability of the compartment panels reach a higher level.

[0024] In short, the shortening of the time difference between the foam layer and the pressing of the inner and outer panels after its formation not only solves the problems of poor adhesion and structural defects caused by time delay in the traditional process, but also comprehensively improves the performance of the sandwich panel by optimizing the internal quality and interface connection relationship of the foam layer, ensuring that it has better thermal insulation effect and mechanical strength in actual use.

[0025] In addition, the system helps to achieve a lightweight design for the car body panels. The use of an inner layer of foaming agent reduces the overall weight of the panels, thereby reducing vehicle energy consumption and improving the energy efficiency and environmental friendliness of refrigerated trucks. Compared with the traditional three-layer material bonding process, the processing method of this system reduces the use of bonding materials and reduces production costs, while avoiding the widespread use of chemical adhesives, further enhancing environmental friendliness. In addition, the performance of the car body panels processed by this system is comprehensively improved. Not only does it excel in thermal insulation performance, lightweight, and environmental friendliness, it also optimizes the production process, providing an efficient, economical, and green solution for the refrigerated truck manufacturing industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the working state of the lower mold assembly and the movable upper mold assembly in the present invention;

[0027] Figure 2 It is a side view of the lower mold assembly and the movable upper mold assembly in the present invention in working state;

[0028] Figure 3 It is a structural schematic diagram of the side hook pulling unit in the present invention;

[0029] Figure 4 It is a structural schematic diagram of the vertical guide mechanism in the present invention;

[0030] Figure 5 Schematic diagram of the system of the present invention. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0032] In order to solve the problems of heavy weight, poor environmental protection, high cost, low processing efficiency and poor product quality in the current processing and manufacturing of refrigerated truck compartment panels, the present invention provides a mobile die processing system and processing method for compartment panels. In order to further illustrate the structure of the present invention, the detailed description is as follows in conjunction with the accompanying drawings:

[0033] See also Figure 1 and Figure 2 A mobile die-casting processing system for a carriage panel includes a lower die assembly and a movable upper die assembly. The lower die assembly includes a lower die base 1 and a lower die 2. The movable upper die assembly includes a movable upper die frame 3, a die hydraulic cylinder 4, an upper die 5, a side hook pulling unit 6, and a foaming material generating assembly 7.

[0034] The lower die is installed on the lower die base. Specifically, the lower die base is a rectangular support pedestal, and the specific size can be designed according to the size of the adapted carriage plate, and the area is larger than the processed carriage plate.

[0035] The lower die is a rectangular table panel fixed on the lower die plate. The lower die is provided with a lower die table for setting the lower compartment plate, and the lower die table is the support plane of the lower compartment plate. The lower die table is provided with a limit assembly, and the limit assembly includes a rectangular limit frame, and the inner side of the rectangular limit frame forms a die groove whose shape matches the contour of the lower compartment plate. In this embodiment, specifically, fixed limit blocks are evenly distributed around the lower die table of the lower die, and the four borders of the rectangular limit frame are arranged on the inner side of the limit blocks. The ends of the four borders do not need to be butted, and corner openings are left to facilitate the adjustment of the surrounding area. In order to make the size of the rectangular limit frame adjustable, an expansion block is pressed between the fixed limit block and the border of the rectangular limit frame. The expansion block includes a top plate that contacts the fixed limit block and the border respectively, and a screw connected between the two top plates by threads. The overall width of the expansion block is adjusted by rotating the screw to adjust the length of the top plate, and the distance between the border and the fixed limit block is adjusted in turn.

[0036] The movable upper mold frame forms a horizontal movable frame that moves above the lower mold table. The function of the movable upper mold frame is to move the upper box plate horizontally and linearly in a manner parallel to the lower box plate to above the lower box plate and finally overlap with the vertical projection of the lower box plate. Another function is to make the foam material generation assembly carried by it form a foam material layer between the lower box plate and the upper box plate during its movement, that is, it is an active action driving component that synchronously completes the feeding of the upper box plate and the generation of the foam material layer. In this embodiment, specifically, horizontal linear guides are set on both sides of the lower mold base, and the movable upper mold frame is a gantry-shaped walking frame that is equipped with the horizontal linear guide and moves horizontally and linearly along the horizontal linear guide. The gantry-shaped walking frame includes supporting side frames located on both sides and a platform arranged between the two supporting side frames, and the die pressing hydraulic cylinder is installed on the platform. Furthermore, the gantry-shaped traveling frame is a steel frame, and the lower part of the supporting side frames on both sides is equipped with traveling wheels and a traveling motor device for driving the traveling wheels to rotate. The platform is a flat steel hook frame, which is used to load the die hydraulic cylinder, the upper mold and the foaming material generation assembly.

[0037] The foaming material generating assembly is installed on the movable upper mold frame, and the foaming material generating assembly is provided with a foaming material outlet installed on the front end of the movable upper mold frame, and the foaming material outlet is transversely supplied to the lower compartment plate with foaming material. In the present embodiment, specifically, the foaming material generating assembly is provided with a discharge conduit 7-1, the discharge conduit is horizontally arranged and perpendicular to the horizontal moving direction of the movable upper mold frame, the discharge conduit is transversely arranged above the lower mold table, and the foaming material outlet is axially spaced in the discharge conduit. A foaming agent nozzle frame is fixed on the front edge of the forward side of the upper mold, and a horizontal material handling conduit is installed at the lower part of the foaming agent nozzle frame, which is horizontal and crosses the supporting plane of the lower mold. A plurality of nozzles that can spray foaming agent are evenly distributed axially at the lower part of the handling conduit to ensure that it can form a foaming agent extending transversely (perpendicular to the feeding direction of the upper compartment plate) in the transverse direction of the lower compartment plate, and in the process of the horizontal linear movement of the foaming material outlet, a foaming agent layer covering the upper compartment plate is finally formed.

[0038] As an existing equipment, the foam material generation assembly is mainly used to generate foam materials with excellent thermal insulation properties during the production process and accurately inject them into the sandwich structure. The equipment is usually composed of multiple core components, including a foaming agent feeding system, a mixing system, an injection device and a control system. The feeding system accurately delivers the raw materials to the mixing zone according to the set ratio, and the mixing system ensures that the various foaming agent components are evenly integrated to avoid quality problems caused by uneven reactions. Then, the injection device accurately injects the generated foam material between the inner and outer panels of the sandwich structure such as the car body panel to form a uniform foam layer. The control system monitors the entire process in real time and ensures the quality of the foam material and the controllability of the reaction process by finely adjusting the parameters. The existing foam material generation assembly can effectively improve production efficiency, reduce raw material waste, and ensure that the product has higher quality consistency and longer service life through a stable production process.

[0039] The die hydraulic cylinder and upper die are installed on the movable upper die frame, and the die hydraulic cylinder is connected to and drives the upper die to move vertically. Figure 4 , the upper mold is installed on the movable upper mold frame through a vertical guiding mechanism 8. In this embodiment, specifically, the vertical guiding mechanism includes a vertical rack 8-1 arranged at the four corners of the movable upper mold frame, a gear seat 8-2 is installed at the four corners of the movable upper mold frame, a guide gear 8-3 meshing with the vertical rack is installed in the gear seat, and the vertical rack vertically penetrates the gear seat to form a vertical guide of the vertical rack, all guide gears are connected by a synchronous transmission shaft 8-4 and a bevel gear 8-5, and the lower end of the vertical rack is connected to the upper mold. The die hydraulic cylinder is vertically arranged, and the number in this embodiment is four, facing the platform evenly distributed on the movable upper mold frame, that is, the platform fixes the cylinder body of the die hydraulic cylinder, and the piston rod of the die hydraulic cylinder is vertically extended downward, and the end of the piston rod is connected to the upper mold. The vertical guiding mechanism is a structure to ensure that the upper mold moves vertically in a horizontal and stable posture. The vertical racks are distributed and connected at the four corners of the upper mold. The vertical racks are used as components to maintain balance. The upper ends are connected through a gear set and a synchronous transmission shaft. The gear set includes a guide gear meshing with the vertical rack. The guide gear is installed on the stand through a wheel axle. This wheel axle is connected to other guide gears through a bevel gear set and a horizontally arranged synchronous transmission shaft to ensure the synchronization of the vertical racks.

[0040] In the above structural design, the die hydraulic cylinders are evenly distributed at the four corners of the mobile upper die frame, and the vertical guide mechanism is used to mesh with the vertical rack and the guide gear, so that the upper die can maintain a horizontal and stable posture during the vertical movement. This structure effectively avoids the tilting or instability caused by the imbalance of gravity or excessive local force when the die moves, and ensures the uniformity and accuracy of the entire die pressing process. The synchronous transmission design between the vertical rack and the guide gear ensures the synchronous movement of the upper die in the vertical direction. All guide gears are connected by synchronous transmission shafts and bevel gears, so that the movement of each guide gear is consistent, avoiding errors between different gears, and ensuring the stability and symmetry of the upper die. This synchronous transmission mechanism makes the vertical movement of the mold more precise, thereby improving the quality of the processed product. The design adopts gear meshing transmission, and is connected by a gear set, a bevel gear set and a synchronous transmission shaft, which reduces the friction and wear between the various components. While accurately transmitting, it reduces the wear caused by uneven force, extends the service life of the equipment, and reduces the maintenance cost. The vertical setting and uniform distribution of the die hydraulic cylinder make the applied pressure more uniform and avoid the concentration of force in a single direction. The stable driving force provided by the hydraulic system enables the upper die to maintain stable movement under heavy load, so as to adapt to the high-intensity operation requirements in large-scale production. Since the design can ensure the smooth vertical movement of the upper die, the alignment accuracy during the pressing process is greatly improved. This precise control makes the production process smoother and reduces the downtime caused by error adjustment or mold misalignment, thereby improving production efficiency and shortening the production cycle. The vertical guide mechanism ensures the stability of the upper die during movement and avoids the risk of mold shaking or instability. With precise synchronous transmission, the operator can control the equipment more easily, reducing the risk of accidents caused by improper operation and improving operational safety. Since the various components in the structural design, such as guide gears, synchronous transmission shafts, etc., are independently set and connected by transmission, the adjustment and maintenance of the equipment become more convenient. When a fault occurs or adjustment is required, it can be corrected by adjusting the synchronous transmission system without large-scale disassembly of the overall structure, which improves the maintainability of the equipment.

[0041] N side hook pull units are evenly arranged in the circumferential direction on the side of the upper die. Figure 3The side hook-pull unit is provided with a hook 6-1 for hooking the edge of the upper compartment plate and a hook-claw driving component for driving the hook to move outward, and a hook-pull part combined with the hook is provided on the side of the lower mold. In this embodiment, specifically, the hook-claw driving component is a hook-lock hydraulic cylinder 6-2, the cylinder body of the hook-lock hydraulic cylinder is installed on the side of the upper mold through a pin shaft, the hook is installed on the cylinder rod of the hook-lock hydraulic cylinder, and the hook-pull part is an axle rod provided on the side of the lower mold. Specifically, a plurality of shaft seats are evenly distributed on the edge of the upper mold, and the shaft seats are installed with the cylinder body of the hook-lock hydraulic cylinder through a pin shaft. The hook-lock hydraulic cylinder uses the pin shaft as a rotating shaft to realize deflection, and the pin shaft is parallel to the side of the upper mold. The deflection can realize the inner and outer swing of the hook, thereby realizing the hooking of the edge of the upper compartment plate or the hooking of the lower mold. The output of the sway driving force can be achieved by driving the sway driving motor that rotates the driving pin. In this embodiment, the sway driving force is output as the sway driving hydraulic cylinder 6-3. The cylinder body of the sway driving hydraulic cylinder is fixed to the inner side of the upper mold, and its cylinder body is hinged to the bracket fixed to the upper mold. Its piston rod is hinged to the cylinder body of the hook lock hydraulic cylinder. The piston rod of the sway driving hydraulic cylinder telescopically drives the hook lock hydraulic cylinder to sway. In order to achieve the synchronous sway of the hook lock hydraulic cylinders of all the side hook pull units on the same side, the cylinder bodies of the sway driving hydraulic cylinders of the side hook pull units on the same side are connected by the same connecting rod frame, and the piston rod of the sway driving hydraulic cylinder is hinged to the connecting rod frame to drive all the side hook pull units on the same side to work synchronously. The cylinder body hinge axis and piston rod hinge axis of the sway driving hydraulic cylinder are parallel to the axis of the pin of the hook lock hydraulic cylinder to achieve the completion of the sway action.

[0042] After the upper and lower compartment panels are pressed together with the foaming agent layer, this design significantly improves the product quality by distributing the locking and clamping force around the compartment panels. First, the peripheral distribution of the locking and clamping force can provide uniform and stable pressure, making the diffusion and solidification of the foaming agent in the interlayer more uniform, avoiding defects such as gaps, collapse or inconsistent thickness caused by uneven local pressure, thereby improving the density and thermal insulation performance of the foaming layer. Secondly, this design effectively enhances the close bonding between the foaming layer and the inner and outer compartment panels, especially at the edges, where the connection is more solid, which can avoid delamination or peeling problems caused by loose edges, and improve the overall structural stability and service life of the compartment panels. At the same time, uniform pressure distribution helps to maintain the flatness of the compartment panels, avoid deformation or warping of the inner and outer compartment panels due to uneven force, thereby ensuring the consistency of the product in appearance and function. In addition, the design can also optimize the distribution of bubbles inside the foaming layer, forming a more regular closed-cell structure, further improving the thermal insulation performance and pressure resistance of the compartment panels. This peripherally distributed clamping method not only improves the production quality of the car body panels, but also provides reliable technical support for large-scale production, which helps to improve the product qualification rate and market competitiveness.

[0043] The side hook pull unit can be used to hook and carry the upper plate for feeding, and can also be used as a hook lock to clamp the upper and lower molds. Since the side hook pull unit has the dual functions of feeding the upper plate and clamping the hook lock, the production process is simplified and the parts that need to be set up additionally are reduced. In this way, the operator only needs to perform feeding and clamping operations through a single device, avoiding frequent equipment replacement and adjustment, and significantly improving production efficiency and operational consistency. The dual-action design integrates these two functions into a single component, saving equipment layout space and reducing the number of required parts. This not only improves the space utilization of the production line, but also effectively reduces the equipment procurement and maintenance costs. The side hook pull unit can ensure more accurate mold alignment by precisely controlling the application of force when clamping the upper and lower molds. This precise clamping force distribution can avoid mold misalignment or unbalanced pressing due to uneven clamping or looseness, thereby ensuring the stability and high precision of the mold during processing. By integrating two key functions into one component, the complexity and potential failure points of the system are reduced, and the reliability of the equipment is improved. As the number of operating links is reduced, the probability of failure is correspondingly reduced, and the stability and maintainability of the equipment are enhanced. The design combines the functions of feeding and clamping into one, simplifying the operation process. The operator only needs to focus on one function, reducing the complexity of the operation, thereby reducing the mistakes caused by improper operation and improving the convenience and safety of operation. The side hook pull unit has two functions at the same time, which helps the coordination between the various parts of the equipment. The synchronization of feeding and clamping actions is enhanced, making the pressing of the mold smoother, while reducing the possible asynchrony or conflict problems between equipment, and improving the smoothness of the entire production process. The integrated design makes the system more flexible in responding to different production needs. For example, in different production batches, the force and position of feeding and clamping can be adjusted as needed. The system can better adapt to upper compartment plates and molds of different specifications and sizes, enhancing the adaptability and versatility of the equipment.

[0044] In the present embodiment, further, a heating component for heating the upper compartment plate is uniformly arranged inside the upper mold. The heating component provides uniform heat to the upper compartment plate, so that its surface temperature is maintained within a range suitable for the curing of the foaming material. The foaming material can complete chemical reactions (such as decomposition of the foaming agent and cross-linking curing) more quickly in a thermal environment, thereby accelerating the molding process of the foaming layer and improving production efficiency. Under the action of the heating component, the surface temperature of the upper compartment plate increases, which can reduce the interfacial viscosity with the foaming material and promote mutual penetration and cross-linking between molecules. This effect effectively improves the adhesion between the foaming layer and the upper compartment plate, forming a tighter interface bond. Uniform heating can avoid differences in the curing speed of the foaming material caused by uneven local temperatures. By providing a consistent thermal environment for the foaming material, the bubble generation, expansion and curing during the foaming process are more uniform, forming a foaming layer with a dense structure and stable performance.

[0045] The heating component adopts a combination structure of embedded electric heating tubes and high thermal conductivity heat conducting plates to achieve uniform heating of the upper compartment plate. Specifically, the resistive heating tubes are evenly arranged inside the upper mold, arranged in a grid shape with uniform spacing, and fixed to the back of the heat conducting plate by high temperature resistant insulating materials. The heat conducting plate is made of aluminum alloy or copper material, with a thickness of 5-10mm, and has excellent thermal conductivity. Its surface is smoothed and coated with a high temperature resistant and anti-oxidation coating, and it directly contacts the upper compartment plate to transfer heat. To ensure the uniformity and accuracy of heating, PTC thermistor temperature sensors are embedded in multiple key positions of the heat conducting plate, and the temperature is monitored and adjusted in real time in combination with the PID controller, so that the upper compartment plate is always in a temperature range suitable for the curing of the foaming material, which not only ensures the quality and density of the foaming layer, but also improves the processing efficiency and product performance.

[0046] like Figure 5 , including two lower die assemblies, which are arranged on the same straight line, with a horizontal linear guide rail set between them, each lower die assembly is provided with a lower die seat and a lower die, and the mobile upper die frame relies on the horizontal linear guide rail and moves to the top of one of the lower die assemblies through the horizontal straight line. During the working process, when the mobile upper die frame moves to the top of a lower die assembly, the lower die assembly performs the die pressing operation of the compartment plate; at the same time, the other lower die assembly is in a waiting state, and the loading and unloading operations of the compartment plate can be performed synchronously. This design utilizes the characteristics of division of labor and cooperation between the upper and lower die frames, realizes the alternation of processing and loading and unloading operations, effectively avoids the time waste of a single mold waiting for loading and unloading, thereby significantly improving the overall production efficiency of the system, while maintaining the continuity and stability of the processing rhythm, and is suitable for mass production environments.

[0047] Embodiment 2

[0048] The method for processing a carriage plate of the carriage plate mobile die processing system according to the first embodiment is characterized by comprising the following steps:

[0049] S1. The upper mold is mounted on the side of the lower mold by the movable upper mold frame, and the lower compartment plate is placed horizontally on the lower mold table;

[0050] S2. The upper compartment plate is hooked by the side hook pull unit, and the upper mold frame is moved to the top of the lower compartment plate, and the horizontal movement direction is parallel to the side of the rectangular lower compartment plate;

[0051] S3. The foam material outlet of the foam material generating assembly supplies the foam material to the upper surface of the lower compartment plate from the area above the lower compartment plate to the area above the lower compartment plate;

[0052] S4. After the upper panel is moved to the top of the lower panel and aligned, the side hook pull unit hooks and lowers the upper panel, and the die hydraulic cylinder drives the lower die to descend and press the upper panel onto the foam material on the upper surface of the lower panel;

[0053] S5. The side hook-pull unit works, and the upper compartment plate, the foaming material and the lower compartment plate are locked and pressed together by combining the side hook-pull unit with the hook-pull part of the lower mold.

[0054] In traditional processes, foaming materials are usually prepared in advance or formed statically in a mold, while the present invention dynamically supplies foaming materials so that they are aligned and pressed together while being formed on the surface of the lower compartment panel, thus constructing a new integrated and all-in-one process. During the processing, the foaming material generation assembly dynamically supplies foaming materials, and directly presses together the upper and lower compartment panels after they are aligned. This synchronous combination avoids the problems of poor contact or warping that may exist when the foaming layer is prefabricated and then bonded to the compartment panel in traditional processes, and significantly improves the bonding quality between the foaming layer and the compartment panel. The foaming material is directly pressed together after being dynamically supplied on the surface of the lower compartment panel, which effectively shortens the open time of the foaming layer and reduces problems such as uneven bubbles, collapse or insufficient strength that may be caused by excessive exposure. This processing method significantly improves the density and uniformity of the foaming material, thereby further improving the thermal insulation performance and structural stability of the compartment panel.

[0055] The foaming material is quickly pressed immediately after it is formed, which greatly shortens the time the foaming material is exposed to the air and avoids material aging, collapse or uneven bubbles caused by oxidation, moisture absorption or temperature changes. This feature ensures the density and uniformity of the foaming layer, thereby improving the thermal insulation and mechanical properties of the sandwich panel. The foaming material is pressed by the upper and lower panels before it is fully cured, which can fully combine with the surface of the panel at the molecular level to form a tighter interface connection. It completely avoids the foaming layer often being bonded to the panel after curing, which causes the bonding strength to decrease due to surface hardening or residual stress. The new process avoids this situation and significantly improves the overall stability of the sandwich structure.

[0056] The stress release during the curing process of the adhesive may cause the board to warp or internal stress concentration. This process significantly improves these problems through reasonable stress distribution. After rapid pressing, the locking stress is concentrated around the board, which can effectively control the pressing deformation of the board and reduce the residual stress in the foaming layer. In addition, through the design of rapid pressing and locking stress concentrated around the board, the pressing force can be evenly transmitted to the edge and surface of the entire board. This uniform force distribution can reduce the local warping or depression caused by uneven pressure distribution in the traditional pressing process, and improve the flatness and appearance quality of the finished product. The locking stress concentrated around the board forms a "frame strengthening" effect, which significantly enhances the impact resistance and peeling resistance of the edge of the board. At the same time, the foaming layer is more evenly squeezed during pressing, which helps to form a denser internal structure, thereby improving the compression and bending resistance of the entire board. The original hooking mechanical structure quickly plays a surrounding locking role after the board is placed, greatly shortening the molding and bonding time of the foaming material, and the centralized design of locking stress makes the pressing process more reliable. The combination of the two significantly reduces the processing cycle of a single sheet of board, greatly improving production efficiency compared to traditional multi-step bonding and long-term pressing processes.

[0057] 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 mobile die-casting system for car body panels, characterized in that: It includes a lower mold assembly and a movable upper mold assembly, the lower mold assembly includes a lower mold base and a lower mold, the movable upper mold assembly includes an upper movable upper mold frame, a die hydraulic cylinder, an upper mold, a side hook pull unit, and a foam material generating assembly; the lower mold is installed on the lower mold base, the lower mold is provided with a lower mold table for setting a lower compartment plate, the movable upper mold frame forms a horizontal movable frame moving above the lower mold table, the foam material generating assembly is installed on the movable upper mold frame, the foam material generating assembly is provided with a foam material outlet installed on the front end of the movable upper mold frame, the foam material outlet supplies the foam material of the lower compartment plate laterally, the die hydraulic cylinder and the upper mold are installed on the movable upper mold frame, the die hydraulic cylinder is connected to and drives the upper mold to move vertically, N side hook pull units are evenly arranged on the side of the upper mold, the side hook pull unit is provided with a hook for hooking the edge of the upper compartment plate and a hook driving component driving the hook to move outward, and the side of the lower mold is provided with a hook pull part combined with the hook.

2. The movable die pressing system for car body panels according to claim 1 is characterized in that: Horizontal linear guide rails are arranged on both sides of the lower mold base, and the movable upper mold frame is a gantry-shaped traveling frame which is equipped on the horizontal linear guide rails and moves horizontally and linearly along the horizontal linear guide rails. The gantry-shaped traveling frame includes supporting side frames located on both sides and a platform arranged between the two supporting side frames, and the die pressing hydraulic cylinder is installed on the platform.

3. The movable die pressing system for car body panels according to claim 1 is characterized in that: The lower die table is provided with a limiting assembly, and the limiting assembly comprises a rectangular limiting frame, and the inner side of the rectangular limiting frame forms a die groove whose shape matches the contour of the lower compartment plate.

4. The movable die pressing system for car body panels according to claim 1 is characterized in that: The foaming material generating assembly is provided with a discharge conduit, which is horizontally arranged and perpendicular to the horizontal moving direction of the movable upper mold frame, and is transversely arranged above the lower mold table, and the foaming material outlets are axially spaced apart on the discharge conduit.

5. The movable die pressing system for car body panels according to claim 1 is characterized in that: The upper die is mounted on the movable upper die frame via a vertical guiding mechanism.

6. The movable die pressing system for car body panels according to claim 1 is characterized in that: The hook claw driving component is a hook locking hydraulic cylinder, the cylinder body of the hook locking hydraulic cylinder is installed on the side of the upper mold through a pin shaft, the upper mold is installed with a sway driving hydraulic cylinder that drives the hook locking hydraulic cylinder to sway around the pin shaft, the hook is installed on the cylinder rod of the hook locking hydraulic cylinder, and the hook pulling part is an axis rod arranged on the side of the lower mold.

7. The movable die pressing system for car body panels according to claim 1 is characterized in that: The interior of the upper mold and / or the lower mold is evenly provided with a heating component for heating the upper compartment plate and / or the lower compartment plate.

8. The movable die pressing system for car body panels according to claim 5 is characterized in that: The vertical guide mechanism includes vertical racks arranged at the four corners of the movable upper mold frame. Guide gears meshing with the vertical racks are installed at the four corners of the movable upper mold frame. All the guide gears are connected through a synchronous transmission shaft and a bevel gear. The lower end of the vertical rack is connected to the upper mold.

9. The movable die pressing system for car body panels according to claim 1 is characterized in that: It comprises at least two lower die assemblies, and the movable upper die frame moves to the top of one of the lower die assemblies through a horizontal straight line.

10. A processing method based on the movable die processing system for car body panels according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. The upper mold is mounted on the side of the lower mold by the movable upper mold frame, and the lower compartment plate is placed horizontally on the lower mold table; S2. The upper compartment plate is hooked by the side hook pull unit, and the upper mold frame is moved to the top of the lower compartment plate, and the horizontal movement direction is parallel to the side of the rectangular lower compartment plate; S3. The foam material outlet of the foam material generating assembly supplies the foam material to the upper surface of the lower compartment plate from the area above the lower compartment plate to the area above the lower compartment plate; S4. After the upper panel is moved to the top of the lower panel and aligned, the side hook pull unit hooks and lowers the upper panel, and the die hydraulic cylinder drives the lower die to descend and press the upper panel onto the foam material on the upper surface of the lower panel; S5. The side hook-pull unit works, and the upper compartment plate, the foaming material and the lower compartment plate are locked and pressed together by combining the side hook-pull unit with the hook-pull part of the lower mold.

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