Nitrocotton inner cover forming equipment

Abstract

The invention relates to the technical field of inner cover forming equipment, and particularly discloses nitrocotton inner cover forming equipment which comprises a feeding mechanism, a punching and cutting mechanism, a transfer loading mechanism, a hot press forming mechanism, a punching and cutting mechanism, a discharging and stacking mechanism and a control center. The control center is electrically connected with the feeding mechanism, the punching sheet cutting mechanism, the transfer carrying mechanism, the hot press forming mechanism, the punching cutting mechanism and the discharging stacking mechanism. Materials are fed to the punching and cutting mechanism through the feeding mechanism, the punching and cutting mechanism conducts punching on the materials to form multiple sets of sheet materials, the middle transferring and carrying mechanism transfers the sheet materials to the hot-press forming mechanism, the hot-press forming mechanism conducts hot-press forming on the sheet materials, the sheet materials subjected to hot-press forming are transferred to the punching and cutting mechanism through the middle transferring and carrying mechanism, and the punching and cutting mechanism conducts punching and cutting on the sheet materials subjected to hot-press forming. The punching and cutting mechanism is used for punching the bottoms of the sheet materials formed through hot pressing, and the punched sheet materials are transferred to the discharging and stacking mechanism through the transfer mechanism to be discharged.

Description

Technical Field

[0001] This invention relates to the field of inner cover forming equipment, and in particular discloses a nitrocellulose inner cover forming equipment. Background Technology

[0002] In the field of nitrocellulose product molding and processing, due to the core characteristics of nitrocellulose—its flammability, explosiveness, and fragile nature—the industry has long faced the dual challenges of adapting to specialized processes and ensuring efficient and safe production. Traditional processing technologies generally suffer from low levels of automation integration. The entire process, from material feeding and molding to finished product stacking, lacks efficient coordination and relies heavily on manual intervention, which limits production efficiency and increases safety risks due to manual operation. Furthermore, traditional equipment lacks specific design for the characteristics of nitrocellulose. Material conveying is prone to friction-induced hazards, tension and offset control accuracy is low, and the molding process is prone to positioning deviations, material adhesion, and quality defects caused by gas residue. Supporting functions such as waste disposal and material replacement protection are also lacking. In addition, the equipment has poor versatility and is difficult to adapt to the processing of multiple product specifications, making it difficult to meet the industry's demand for large-scale, precise, and safe production of nitrocellulose products. Summary of the Invention

[0003] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this invention is to provide a nitrocellulose inner cover molding device.

[0004] To achieve the above objectives, the present invention provides a nitrocellulose inner cover molding device, comprising a feeding mechanism, a punching and cutting mechanism, a transfer and loading mechanism, a hot pressing molding mechanism, a punching and cutting mechanism, a material unloading and stacking mechanism, and a control center. The control center is electrically connected to the feeding mechanism, the punching and cutting mechanism, the transfer and loading mechanism, the hot pressing molding mechanism, the punching and cutting mechanism, and the material unloading and stacking mechanism. The material is fed to the punching and cutting mechanism via the feeding mechanism, which punches the material to form multiple sheets. The transfer and loading mechanism transfers the sheets to the hot pressing molding mechanism, which hot-presses the sheets. The hot-pressed sheets are then transferred to the punching and cutting mechanism via the transfer and loading mechanism, which punches holes in the bottom of the hot-pressed sheets. The punched sheets are then transferred to the material unloading and stacking mechanism via the transfer and loading mechanism for unloading. The punching and cutting mechanism includes a frame, a first worktable mounted on the frame, a winding mechanism, a punching component, a second worktable, and a stacking mechanism. The first worktable is located between the feeding mechanism and the winding mechanism. The punching component is located above the first worktable. The material is unwound to the first worktable by the feeding mechanism and wound up to the winding mechanism. The punching component performs punching operations on the material placed on the first worktable. The stacking mechanism moves to the first worktable, picks up the punched sheet material from the first worktable, and moves it to the second worktable for stacking.

[0005] With the control center at its core, the system achieves coordinated operation of various components such as the feeding mechanism and the punching and cutting mechanism. After being unwound by the feeding mechanism, the material is conveyed to the first worktable of the punching and cutting mechanism (located between the feeding mechanism and the winding mechanism). The punching components on the frame punch the material on the worktable. The punched sheets are picked up by the stacking mechanism and transferred to the second worktable for stacking. The remaining part of the material after punching is wound up by the winding mechanism. The subsequent sheets are transferred to the hot pressing forming mechanism and the punching and cutting mechanism in sequence through the intermediate transfer and loading mechanism to complete the forming and punching. Finally, the unloading and stacking mechanism realizes the unloading. Its beneficial effect is that the centralized management of the control center realizes the automated connection of each process, improves production efficiency, and the layout design of the first worktable and the winding mechanism in the punching and cutting mechanism can realize the continuous conveying and punching of materials, avoiding material conveying interruption. The stacking mechanism can transfer the sheets in time to prevent the sheets from accumulating and affecting the punching accuracy. At the same time, the coordinated operation of each mechanism can ensure the stability and continuity of the nitrocellulose inner cover production process and adapt to the special processing requirements of nitrocellulose materials.

[0006] The transfer mechanism includes a first moving mechanism and a second moving mechanism. The first moving mechanism is located between the punching and cutting mechanism and the hot pressing mechanism. The first moving mechanism is used to transfer the sheet material on the second workbench to the hot pressing mechanism. The hot pressing mechanism, the punching and cutting mechanism, and the unloading and stacking mechanism are arranged along the same direction. The second moving mechanism is located on the same side of the hot pressing mechanism, the punching and cutting mechanism, and the unloading and stacking mechanism. The second moving mechanism is used to transfer the sheet material hot-pressed by the hot pressing mechanism to the punching and cutting mechanism, and to transfer the sheet material punched by the punching and cutting mechanism to the unloading and stacking mechanism for unloading.

[0007] The transfer mechanism is divided into a first moving mechanism and a second moving mechanism with clearly defined functions. The first moving mechanism is positioned between the sheet cutting mechanism and the hot pressing mechanism, specifically to receive the sheet material on the second workbench and accurately transfer it to the processing station of the hot pressing mechanism. The hot pressing mechanism, the punching and cutting mechanism, and the unloading and stacking mechanism are arranged sequentially in the same direction, and the second moving mechanism is positioned on the same side of these three. It is responsible for transferring the sheet material after hot pressing to the punching and cutting mechanism, and transferring the sheet material after punching to the unloading and stacking mechanism, respectively. The entire process is coordinated by the control center to achieve action coordination. Its beneficial effect is that the dual-moving mechanism design of "division of labor and cooperation" makes the material transfer between each process more targeted, avoiding the efficiency loss caused by frequent switching of workstations by a single mechanism. At the same time, the same-direction layout of the hot pressing and forming mechanism and the same-side setting of the second moving mechanism can significantly shorten the material transfer path, reduce the transfer time, and effectively avoid interference between different transfer actions, ensuring that the material is transported smoothly throughout the hot pressing, punching, and unloading process, further improving the overall continuity and accuracy of the equipment's production.

[0008] The feeding mechanism includes a clamping and unwinding component, a feeding group, and a pulling component. Material is sequentially unwound from the clamping and unwinding component to the feeding group and the pulling component, and the three components are arranged sequentially along the material conveying direction to form a continuous feeding channel. The clamping and unwinding component includes a first support frame for holding the material roll, a second support frame parallel to the first support frame, a first rotating shaft disposed between the first and second support frames, and a first drive motor for driving the first rotating shaft to rotate and feed material. An adjusting component is also provided at the bottom of the first support frame. The adjusting component includes a first sliding guide rail and a first sliding block slidably disposed on the first sliding guide rail. The first support frame is provided with a second drive motor that drives the first sliding block to slide back and forth. The bottom of the first support frame is set on the first sliding block. When it is necessary to adapt to the first rotating shaft of different lengths, the second drive motor drives the first sliding block to move back and forth along the first sliding guide rail, causing the first support frame to move closer to or away from the second support frame to adjust the distance between the two. The feeding group includes a third support frame, a feeding roller, an air knife, and a correction mechanism set on the third support frame. The air knife is located below the feeding roller and the air outlet of the air knife faces the surface of the material roll. It is used to blow away the adhering substances on the surface of the material roll. The correction mechanism corrects the material roll on the feeding roller that deviates from the feeding track.

[0009] The clamping and unwinding component, feeding group, and pulling component are arranged sequentially along the material conveying direction to form a continuous feeding channel. After being unwound by the clamping and unwinding component, the material flows sequentially through the feeding group and the pulling component. The clamping and unwinding component supports a first rotating shaft via a first and second support frame. The rotating shaft is driven to rotate by a first drive motor to feed the material. The adjusting component at the bottom of the first support frame can be driven by a second drive motor to slide a first sliding block along a first sliding guide rail, causing the first support frame to move closer to or further away from the second support frame, thereby adapting to first rotating shafts of different lengths. The third support of the feeding group... The frame is equipped with a feeding roller, and the air knife below it blows away the adhering substances from the material surface through the air vent. The correction mechanism corrects the material roll that deviates from the feeding track in real time. Its beneficial effects are that the continuous feeding channel design ensures the continuity of material conveying, the adjustment component allows the clamping and unwinding components to be adapted to shafts of different specifications, improving the equipment's versatility, and the air knife and correction mechanism respectively realize the control of material cleaning and conveying accuracy, effectively avoiding the impact of adhering substances on product quality and the processing errors caused by material roll deviation, thus improving the stability, adaptability and reliability of the feeding process as a whole.

[0010] The correction mechanism includes a feeding correction rod and a correction sensor. The feeding correction rod is located on the side of the feeding group near the clamping and unwinding component, and the correction sensor is located on the side of the feeding group near the pulling component. The feeding roller is located between the feeding correction rod and the correction sensor. The correction sensor collects the lateral offset signal of the material roll in real time and feeds it back to the control center. The control center drives the feeding correction rod to move according to the offset signal, so as to realize the real-time correction of the material roll conveying.

[0011] Composed of a feeding and correction rod and a correction sensor, the feeding and correction rod is installed on the side of the feeding group near the clamping and unwinding component, while the correction sensor is installed on the side of the feeding group near the pulling component. The feeding roller is positioned between the two, forming a "detection-adjustment" layout. During operation, the correction sensor collects the lateral offset signal of the material roll in real time and transmits it to the control center. The control center precisely drives the feeding and correction rod to move according to the offset signal, realizing real-time correction of the material roll conveying. Its advantages lie in the fact that the reasonable layout of "front-end adjustment + back-end detection" makes the correction action more targeted and timely, which can effectively avoid subsequent processing errors caused by material roll offset, improve the accuracy of material roll conveying, and ensure the stability of the continuous feeding process through real-time feedback and response mechanism, providing strong support for the quality of subsequent punching and other processes. Moreover, it has a simple structure, high control efficiency, and is suitable for the precision conveying requirements of nitrocellulose material rolls.

[0012] The feeding rollers are provided in multiple sets, and the feeding rollers are air bearing rollers. The feeding set also includes tension floating rollers. A tension floating roller is provided between two sets of feeding rollers. The feeding roller includes a winding roller and air bearings arranged on both sides of the winding roller. The air bearing includes a housing, an air inlet on the housing, a graphite bushing arranged inside the housing, and a seal on the housing. The graphite bushing is interference-fitted with the mounting journal of the winding roller. The seal abuts against the winding roller to prevent relative displacement between the graphite bushing and the winding roller. The air inlet is connected to an external air source through an explosion-proof pipe. After the external air source enters the air bearing through the air inlet, an air film is formed between the graphite bushing and the winding roller, realizing frictionless rotation of the winding roller.

[0013] The air bearing consists of a housing, an air inlet, a graphite bushing, and seals. The graphite bushing is interference-fitted with the journal of the roller, and the seals abut against the roller to prevent relative displacement. The air inlet is connected to an external air source through an explosion-proof pipe. After the air enters, an air film is formed between the graphite bushing and the roller, enabling frictionless rotation of the roller. Its advantages include that the frictionless rotation design of the air bearing avoids the generation of sparks and metal shavings from mechanical friction, making it suitable for the flammable, explosive, and highly clean processing requirements of nitrocellulose. The combination of multiple sets of feed rollers and tension float rollers ensures stable tension during the material roll conveying process, preventing the material roll from stretching or wrinkling. The structural design of the seals and interference fit improves the stability of the feed roller operation, and the explosion-proof pipe further enhances the safety protection performance of the equipment, ensuring the accuracy, safety, and continuity of material roll conveying.

[0014] The tension roller includes a tension shaft and two sets of tension adjusting assemblies disposed on both sides of the tension shaft. Each tension adjusting assembly includes a fixed base mounted on a third support frame, a first rod disposed below the fixed base, and a second sliding block slidably mounted on the first rod. The two ends of the tension shaft are respectively fixed to the two sets of second sliding blocks of the two tension adjusting assemblies. When the tension of the material roll increases, the second sliding block is pushed downwards along the first rod; when the tension of the material roll decreases, the second sliding block is pushed upwards to reset. The tension adjusting assembly also includes a locking component for locking the position of the second sliding block on the first rod.

[0015] When the tension of the material roll increases, it pushes the second sliding block to slide downward along the first rod. When the tension decreases, the second sliding block returns to its original position. At the same time, the locking component of the tension adjustment assembly can fix the second sliding block in a specific position on the first rod. Its beneficial effect is that by the adaptive sliding of the second sliding block with the change of the material roll tension, the tension of the material roll can be adjusted in real time, effectively avoiding the problem of material roll stretching and breaking due to excessive tension or conveying slack and deviation caused by insufficient tension. The locking component can fix the initial tension position according to the needs of material rolls of different specifications, ensuring the stability of conveying. The overall structure is simple and the adjustment is precise, providing a strong guarantee for the material roll conveying quality of subsequent punching and other processes, and adapting to the characteristics of nitrocellulose material rolls that are easily damaged.

[0016] The material pulling component includes a fourth support frame, a second sliding guide rail mounted on the fourth support frame, a clamping assembly slidably mounted on the second sliding guide rail, a first driving member for reciprocating movement of the clamping assembly, and a fixing assembly fixedly mounted on the side of the second sliding guide rail. The fixing assembly is located on the side of the material pulling component closer to the punching and cutting mechanism. The fixing assembly has the same structure as the clamping assembly. Both the fixing assembly and the clamping assembly include a first working plate, two sets of first side plates respectively mounted on both sides of the first working plate, a second working plate mounted on the two sets of first side plates, and a pressing unit mounted on the second working plate. The pressing unit includes a pressing driving member and a pressing plate connected to the output end of the pressing driving member. The holding plate is located between the first working plate and the second working plate. The pressing drive is used to drive the holding plate closer to the first working plate, clamping the material roll on the first working plate between the holding plate and the first working plate. In the initial state, the holding plate of the positioning component clamps the material roll for positioning. The clamping component moves to the side close to the feeding group and clamps the material roll. The first drive drives the clamping component to move along the second sliding guide rail towards the punching and cutting mechanism, pulling the material roll to the set length. After it is in place, the holding plate of the positioning component releases, and the material roll is conveyed to the feeding position of the punching and cutting mechanism for cutting. After cutting, the clamping component releases the material roll and resets under the drive of the first drive. The positioning component re-clamps the material roll, completing one pulling cycle.

[0017] The coordinated action of the material positioning and clamping components enables precise control of the material roll feeding, preventing the material roll from shifting or loosening during the feeding process. The second sliding guide rail ensures the smoothness and positional accuracy of the clamping component's movement. The identical component structure facilitates processing, manufacturing, and subsequent maintenance. The continuous cyclic feeding action ensures seamless connection between the feeding and cutting processes, effectively improving production efficiency. At the same time, precise control of the feeding length provides a reliable guarantee for the subsequent punching quality, adapting to the stringent requirements of nitrocellulose material rolls for conveying accuracy.

[0018] The punching component includes a punching blade and a punching drive for driving the punching blade to reciprocate on the frame. A spring buffer module is provided at the bottom of the first worktable. The spring buffer module protrudes from the reference surface of the first worktable and moves up and down along the reference surface of the first worktable. The punching drive drives the punching blade to move downward and press the spring buffer module. The spring buffer module and the punching blade together hold the material on the first worktable. The punching blade punches the material to form a sheet. After punching, the punching drive drives the punching blade to reset upward. The spring buffer module releases the elastic driving force to lift the sheet off the reference surface of the first worktable. The stacking mechanism picks up and transports the sheet placed on the spring buffer module to a preset stacking position on the second worktable.

[0019] The core components include a punching blade, a punching drive unit that drives the punching blade to reciprocate on the frame, and a spring buffer module located at the bottom of the first worktable. This module protrudes from the reference surface of the first worktable and can move up and down along the reference surface. During operation, the punching drive unit drives the punching blade to move downward and presses against the spring buffer module. The module and the punching blade together clamp the material on the first worktable, and the punching blade punches the material to form a sheet. After punching is completed, the punching drive unit drives the punching blade to return to its original position, and the spring buffer module releases its elastic driving force to lift the sheet and detach it from the first worktable. The workbench reference surface, then the stacking mechanism picks up the sheet material on the module and transports it to the preset stacking position on the second workbench; its beneficial effect is that the coordinated clamping design of the spring buffer module and the punching blade can improve the stability of the material during punching and ensure the punching accuracy of the sheet material. The elastic lifting function of the module can effectively prevent the sheet material from sticking to the workbench and prevent the sheet material from being damaged. At the same time, the punching action and the stacking mechanism are smoothly connected, realizing the efficient transition from sheet material punching to stacking, further improving the production continuity of the equipment, and adapting to the characteristics of nitrocellulose rolls that are easily scratched and require precise processing.

[0020] The stacking mechanism includes a slice transport guide rail mounted on the frame, a slice transport section, and a second drive unit that drives the slice transport section to reciprocate on the slice transport guide rail. The movement direction of the slice transport section is the same as that of the feeding mechanism. The slice transport section includes a sliding support slidably mounted on the slice transport guide rail and a suction section fixedly mounted on the sliding support. The suction section includes an explosion-proof cylinder fixed on the sliding support and a vacuum suction cup assembly connected to the output end of the explosion-proof cylinder. When the spring buffer module lifts the sheet material, the control center sends a suction command to the stacking mechanism. The second drive unit drives the slice transport section to move along the slice transport guide rail to directly above the punching position of the first worktable. The explosion-proof cylinder drives the vacuum suction cup to move downwards to fit against the upper surface of the sheet material. The vacuum generator starts to generate negative pressure, and the suction cup tightly grips the sheet material. Subsequently, the explosion-proof cylinder resets, causing the sheet material to rise. The second drive unit drives the slice transport section to move along the guide rail to the stacking position of the second worktable. Upon arrival, the vacuum generator of the explosion-proof cylinder stops working, releasing the sheet material and placing it at the preset stacking position on the second worktable.

[0021] The explosion-proof cylinder is designed to be suitable for the flammable and explosive production environment of nitrocellulose. The cooperation between the slice transport guide rail and the second drive component ensures the smoothness and positional accuracy of the slice transport unit. The vacuum suction cup assembly can reliably grasp the slices without scratching or squeezing them. The entire process is precisely linked with the punching components to achieve rapid transfer and orderly stacking of the slices after punching, effectively improving the continuity of equipment production and the regularity of the slice stacking.

[0022] The second workbench includes a fifth support frame, a first material transfer platform, a second material transfer platform, and a transfer moving component mounted on the fifth support frame. The transfer moving component is located below the first and second material transfer platforms and includes a transfer guide rail, a first transfer plate, a front-to-back moving cylinder that drives the first transfer plate to reciprocate, a lifting cylinder mounted on the first transfer plate, and a lifting block connected to the output end of the lifting cylinder. When the stacking mechanism transports the sheet material to the first material transfer platform and the stacked sheet material reaches a preset quantity, the front-to-back moving cylinder drives the first transfer plate to move along the transfer guide rail to directly below the first material transfer platform. The lifting cylinder drives the lifting block to move upward, lifting the stacked sheet material on the first material transfer platform. The front-to-back moving cylinder continues to drive the first transfer plate to move to the second material transfer platform, and the lifting cylinder drives the lifting block to reset downward, placing the stacked sheet material within the sheet material limiting block of the second material transfer platform.

[0023] Through the collaborative design of the dual material interleaving transfer platform and the transfer moving parts, the "stacked receiving-transfer temporary storage" of sheet materials is realized simultaneously. The stacking mechanism can continuously transport sheet materials to the empty first material interleaving transfer platform without waiting for the sheet materials to be transferred, which greatly improves the sheet material flow efficiency. The cooperation between the lifting block and the sheet material limiting block can ensure the positional stability of the sheet materials during the transfer process and avoid displacement damage. The overall structure is compact and the action is smoothly connected, providing orderly and efficient support for the subsequent transfer and loading mechanism to pick up materials.

[0024] The first moving mechanism includes a sixth support frame, a moving block mounted on the sixth support frame, a first moving drive component that drives the moving block to reciprocate on the sixth support frame, and a gripping part fixedly mounted on the moving block. The gripping part includes a gripping bracket, a suction cylinder mounted on the gripping bracket, a suction plate connected to the output end of the suction cylinder, and multiple sets of auxiliary gripping components mounted on the side of the gripping bracket. The gripping part is located above the second workbench. After the sheet material is stacked, the suction cylinder drives the suction plate to move downwards and approach the sheet material to pick it up. The auxiliary gripping components are used to abut against the sides of multiple sets of sheet material to assist in positioning. After the suction plate completes the picking up, the first moving drive component drives the gripping part to move to the hot pressing forming mechanism to place the sheet material in the hot pressing forming mechanism to wait for hot pressing.

[0025] The synergistic effect of the suction plate and the auxiliary gripper not only avoids damage to the sheet material by suction, but also ensures the positioning accuracy of the stacked sheet material by side contact, preventing it from scattering or shifting during the transfer process. The cooperation between the first moving drive and the moving block ensures the stability and positional accuracy of the gripper's movement, making the transfer of the sheet material from the second worktable to the hot pressing and forming mechanism smooth and effectively improving the process flow efficiency. It is suitable for the characteristics of nitrocellulose sheet material that is easily damaged and requires precise transfer.

[0026] The auxiliary gripping component includes a first straight rod connected to the bottom of the gripping bracket. The end of the first straight rod away from the bottom of the gripping bracket has a bent portion, which is used to abut against the sheet material.

[0027] The structural design of the bending section increases the contact area with the sheet material, improves positioning stability, and prevents the sheet material from scattering or shifting due to uneven force on the sides during transfer. At the same time, the bending section can reduce the squeezing and scratching of the sheet material surface by optimizing the contact angle. Together with the suction plate, it forms a dual guarantee of "suction and fixation + side limit", further improving the reliability and accuracy of stacked sheet material transfer process and adapting to the characteristics of easily damaged nitrocellulose sheet material.

[0028] The hot pressing forming mechanism includes a seventh support frame, a stamping electric cylinder mounted on the seventh support frame, a stamping block slidably mounted on the seventh support frame, an upper pressing block mounted on the stamping block, and a lower pressing block fixedly mounted on the seventh support frame. The output end of the stamping electric cylinder is connected to the stamping block. The stamping electric cylinder drives the stamping block to move downward, causing the upper pressing block to approach the lower pressing block, and hot pressing the sheet material placed in the lower pressing block.

[0029] The electric cylinder driving method can precisely control the pressure and downward displacement, ensuring the dimensional accuracy and consistency of sheet hot pressing. The corresponding setting of the upper and lower pressure blocks ensures that the sheet is subjected to uniform force, improving the forming quality. The overall structure is stable and the transmission is smooth, reducing vibration interference during the hot pressing process. It is suitable for the process requirements of hot pressing of nitrocellulose sheets, and is also easy to install, debug and maintain, improving the stability of equipment operation.

[0030] The lower pressing block is provided with multiple sets of air inlets, which are used to discharge the gas generated during hot pressing.

[0031] The air vent effectively prevents gas residue from remaining between the sheet and the press during hot pressing, preventing quality defects such as bubbles, dents, and delamination after sheet forming. At the same time, it ensures uniform pressure transmission during hot pressing, improves the density and dimensional stability of the sheet forming, and is suitable for the process characteristics of nitrocellulose sheet forming that easily generates volatile gases during hot pressing, further ensuring the quality of product forming.

[0032] The bottom of the pressing block is provided with a release mechanism, which includes a release pin and a release drive component that drives the release pin to move up and down reciprocally. The bottom of the pressing block is provided with a release hole. After hot pressing is completed, the release drive component drives the release pin to move upward to abut against the bottom of the hot-pressed sheet material and release it.

[0033] The release mechanism avoids the problem of the sheet material sticking to the lower pressure block after hot pressing, preventing the sheet material from deforming or breaking due to forced removal, ensuring the structural integrity and appearance quality of the molded sheet material. At the same time, the automated release action improves demolding efficiency, making the connection between the hot pressing process and the subsequent transfer process smoother. It is suitable for the process characteristics of nitrocellulose hot pressing molded parts that are prone to sticking to the mold. The structure is simple and the operation is reliable.

[0034] The side of the pressing block is also provided with multiple sets of guiding mechanisms. The guiding mechanism includes a guiding drive and a guiding block connected to the output end of the guiding drive. The end of the guiding block away from the guiding drive is provided with an arc-shaped part. The multiple sets of arc-shaped parts are used to abut against the side of the sheet material and jointly guide the sheet material onto the pressing block.

[0035] The curved design avoids scratching the sheet surface during the alignment process. The coordinated action of multiple parts ensures the symmetry and accuracy of the sheet positioning, prevents sheet displacement during hot pressing, which can lead to dimensional deviations or appearance defects, and ensures the consistency of hot pressing quality. It is suitable for the hot pressing process that requires precise positioning of nitrocellulose sheets. The structural design fits the side contour of the sheet, and the alignment action is smooth and reliable.

[0036] The punching and cutting mechanism includes an eighth support frame, a punching cylinder mounted on the eighth support frame, a punching part mounted on the eighth support frame, and a punching support platform mounted below the punching part. The punching cylinder is used to drive the punching part to move up and down on the eighth support frame to move closer to or further away from the punching support platform to punch the sheet material placed on the punching support platform.

[0037] The punching cylinder drive method can stably control the punching force and stroke, ensuring the accuracy and consistency of the punching hole diameter and position. The upper and lower corresponding layout ensures that the sheet material is subjected to uniform force during punching, avoiding damage such as cracks and deformation. It is suitable for the fragile texture of nitrocellulose molding sheet material and the characteristics of precision machining. The overall structure is compact and the action response is fast, which improves the efficiency and reliability of the punching process and provides qualified products for subsequent material unloading and stacking.

[0038] The bottom of the punching support platform is provided with a punching through groove corresponding to the punching head of the punching section, and the bottom of the punching support platform is provided with a feeding groove connected to it. The waste material after punching flows through the punching through groove to the feeding groove and is then discharged to the external waste box.

[0039] The punching channel enables real-time automatic discharge of punching waste, preventing waste from accumulating in the punching area and affecting subsequent punching accuracy, or scratching the surface of the sheet material and causing quality defects. At the same time, it keeps the processing area clean, reduces the manual waste cleaning process, improves production efficiency, and is suitable for the clean processing requirements of timely handling of nitrocellulose punching waste. The structural design is simple and the waste discharge path is smooth, ensuring the continuity and reliability of the punching process.

[0040] The material feeding and stacking mechanism includes a bar guide rail, a turntable mounted on the bar guide rail, and a bar motor that drives the turntable to move up and down on the bar guide rail. The turntable is equipped with an incoming material sensor, and a limit sensor is located at the bottom of the bar guide rail. The turntable includes a chassis, multiple material trays mounted on the chassis, and a rotary motor that drives the turntable to rotate. When the punched sheet material is transferred to the material trays via the central transfer and loading mechanism, the incoming material sensor senses the incoming material and generates an incoming material command. The control center controls the bar motor to drive the turntable to move downwards. After continuously stacking to a preset height, the turntable descends to the bottom of the bar guide rail and triggers the limit sensor. The limit sensor senses the material and generates a full material command. The control center controls the rotary motor to drive the chassis to rotate according to the full material command, rotating the empty material trays to the stacking position to wait for stacking.

[0041] The automated stacking and pallet changing processes are achieved through the coordinated control of sensors and motors, eliminating the need for manual intervention. The multi-pallet design significantly improves continuous stacking capacity and reduces downtime. Precise control of the turntable's lifting and rotation ensures the neatness of the sheet stacks and avoids sheet damage. The overall process is seamless, effectively improving material feeding and stacking efficiency, and meeting the requirements for orderly and clean storage of nitrocellulose molding sheets.

[0042] Below the winding mechanism is a waste material cutting mechanism, which includes a waste material collection box, a first cutting section and a second cutting section located above the waste material collection box, a cutting cylinder for driving the first cutting section to move closer to the second cutting section, a first pressing component located on the first cutting section, a pressing cylinder for driving the first pressing component to press the film, and a swinging mechanism located on the side of the waste material collection box. The pressing cylinder drives the first pressing component to press the waste material roll film, and the cutting cylinder drives the first cutting section to move closer to the second cutting section to cut the waste material roll film. When a certain amount is cut, the swinging mechanism drives the waste material collection box to shake and shake the waste material evenly.

[0043] The coordinated action of pressing and cutting can prevent the waste material from shifting during cutting, ensuring neat cut edges. The swing mechanism can prevent the waste material from accumulating locally in the collection box, improving the utilization rate of collection space. The automated cutting and collection process reduces manual intervention and labor intensity, while keeping the processing area clean. It is suitable for clean production needs where nitrocellulose waste needs to be handled in an orderly manner. The compact structural design and smooth action connection ensure the high efficiency and reliability of waste material treatment.

[0044] The second moving mechanism includes a front-to-back moving component, a left-to-right moving component mounted on the front-to-back moving component, a movable mounting base mounted on the left-to-right moving component, a vertical moving component mounted on the movable mounting base, and a suction cup transporter mounted on the vertical moving component. There are three sets of suction cup transporters, which are arranged at intervals along the arrangement direction of the hot pressing forming mechanism, the punching and cutting mechanism, and the unloading and stacking mechanism. They are respectively adapted to the discharge station of the hot pressing forming mechanism, the infeed and discharge station of the punching and cutting mechanism, and the infeed station of the unloading and stacking mechanism, and are used to synchronously or sequentially adsorb and fix the sheet material at each station to achieve continuous transport.

[0045] The precise design of the three sets of suction cup handling arms corresponding to each workstation enables continuous operation of sheet material transfer after hot pressing, punching and unloading, and unloading and stacking. The synchronous or sequential action mode flexibly adapts to different production rhythms. The multi-directional moving parts ensure the accuracy of handling and positioning, effectively avoiding deviation and damage during sheet material transfer, greatly shortening the waiting time between processes, and significantly improving the overall production efficiency of the equipment. It is suitable for the process requirements of precise and continuous transfer of nitrocellulose molding sheets.

[0046] Safety devices are provided on the clamping and fixing components of the material pulling mechanism, the punching mechanism, the hot pressing and forming mechanism, and the punching mechanism. The safety devices include a mounting base, a safety drive component, and a limit actuator. When the equipment receives a manual stop and material change command, the safety drive component drives the limit actuator to rise vertically, forming a physical limit on the moving parts of the corresponding mechanism to prevent malfunction. When the material change is completed and the equipment receives a start command, the safety drive component drives the limit actuator to descend and reset, releasing the limit.

[0047] This nitrocellulose inner cover forming equipment includes a feeding mechanism, a punching and cutting mechanism, a transfer and loading mechanism, a hot pressing forming mechanism, a punching and cutting mechanism, a material unloading and stacking mechanism, and a control center that links all components. The material is formed sequentially through each mechanism: In the feeding mechanism, the clamping and unwinding component uses adjustable first / second support frames to adapt to rotating shafts of different lengths for unwinding. Air bearing rollers reduce friction, tension rollers adjust the tension of the material roll, and a wind knife for impurity removal and a correction mechanism provide real-time correction for feeding. The clamping / fixing component of the pulling component clamps the material roll through a pressing unit and is precisely pulled to the punching and cutting mechanism by a first drive component. On the first worktable of the punching and cutting mechanism, the punching blade of the punching component, driven by the punching drive component, works with the spring buffer module at the bottom of the first worktable to clamp the material and punch it into sheets. The vacuum suction cup component of the stacking mechanism picks up the sheets and transfers them to the second worktable, where a transfer and moving component carries... The moving lifting block transfers the stacked sheets from the first material transfer station to the second material transfer station for alternating receiving. The first moving mechanism of the transfer and loading mechanism grabs the sheet from the second workbench and sends it to the hot pressing forming mechanism. This mechanism drives the upper pressing block and the lower pressing block with air vents and a guiding mechanism to perform hot pressing. After hot pressing, the sheet is ejected by the release mechanism. The second moving mechanism, through multi-directional moving parts and three sets of suction cups, synchronously or sequentially transfers the hot-pressed sheet to the punching and cutting mechanism to complete the bottom punching (waste is discharged through the feeding trough). Finally, it is transferred to the feeding and stacking mechanism. The rod motor of this mechanism drives the turntable to rise and fall along the rod guide rail for stacking. The rotating motor drives multiple sets of material trays to switch. The incoming material sensor and the limit sensor control the stacking height and the full material tray change, respectively. At the same time, the waste cutting mechanism below the winding mechanism cuts the waste through the cutting part and the pressing part. The swing mechanism assists the waste collection box in evenly collecting the material.

[0048] The beneficial effects of this invention are as follows: By linking the feeding mechanism, punching and cutting mechanism, transfer and loading mechanism, hot pressing and forming mechanism, punching and cutting mechanism, unloading and stacking mechanism, safety devices, and waste handling components in the control center, the entire process from material roll feeding to finished product stacking is fully automated, significantly reducing manual intervention and greatly improving production efficiency and continuous operation capability. During the feeding stage, the adjustable bearing frame of the clamping and unwinding component is adapted to shafts of different specifications. The air bearing roller avoids friction sparks and metal shavings, the tension floating roller stabilizes the tension of the material roll, the air knife removes surface deposits, and the deviation correction mechanism corrects the deviation in real time, all of which together ensure the safety, accuracy, and stability of the material roll conveying, and are adapted to the flammable, explosive, and easily damaged characteristics of nitrocellulose. During punching and cutting, the spring buffer module and the punching blade work together to clamp the material to improve punching accuracy. The vacuum suction cup stacking mechanism avoids scratching the sheet material, and the double material interleaving transfer platform realizes the simultaneous "stacking-transfer" of sheet material, improving the turnover efficiency. In the transfer and loading stage, the auxiliary gripping component of the first moving mechanism and the suction plate form a "suction" With dual protection of "picking and limiting," the three sets of suction cups in the second moving mechanism adapt to multi-station unidirectional layouts, shortening the transfer path, avoiding motion interference, and ensuring accurate and damage-free sheet material transfer. During hot pressing, the stamping electric cylinder precisely controls pressure and displacement, the air vent discharges heated gas to prevent sheet material bubbles from separating, the guiding mechanism ensures positioning accuracy, and the disengagement mechanism prevents sheet material from sticking, comprehensively improving molding quality. The punching and cutting mechanism stabilizes punching accuracy through punching cylinders, and the unloading trough automatically discharges waste material, keeping the processing area clean. The unloading and stacking mechanism uses sensors and motors for coordinated control to achieve automated stacking and multi-tray switching, reducing downtime and ensuring stacking regularity. At the same time, the safety devices of each key mechanism can physically limit and prevent accidental operation during manual material changes. The waste material cutting mechanism achieves orderly waste material handling through film pressing-cutting coordination and a swing mechanism. The overall equipment meets the stringent requirements of safety, cleanliness, and precision in nitrocellulose inner cap processing, while effectively improving product yield and production operation stability, and reducing labor intensity and safety risks. Attached Figure Description

[0049] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the punching and cutting mechanism of the present invention; Figure 3 This is a schematic diagram of the structure of the clamping and unwinding component of the present invention; Figure 4 This is a schematic diagram of the feeding assembly of the present invention; Figure 5 This is a schematic diagram of the structure of the feeding roller of the present invention; Figure 6 This is a schematic diagram of the structure of the air bearing of the present invention; Figure 7 This is a schematic diagram of the tension floating roller of the present invention; Figure 8 This is a schematic diagram of the material pulling component of the present invention; Figure 9 This is a schematic diagram of the slicing and transporting unit of the present invention; Figure 10 This is a schematic diagram of the structure of the second worktable of the present invention; Figure 11 This is a schematic diagram of the structure of the first moving mechanism of the present invention; Figure 12 This is a schematic diagram of the hot pressing forming mechanism and the punching and cutting mechanism of the present invention; Figure 13 For the present invention Figure 12 A magnified structural diagram of part A in the middle; Figure 14 This is a schematic diagram of the material unloading and stacking mechanism of the present invention; Figure 15 This is a schematic diagram of the waste cutting mechanism of the present invention; Figure 16 This is a schematic diagram of the structure of the second moving mechanism of the present invention; Figure 17 This is a schematic diagram of the safety device of the present invention.

[0050] The reference numerals in the figures include: 1. Feeding mechanism; 2. Punching and cutting mechanism; 3. Hot pressing and forming mechanism; 4. Punching and cutting mechanism; 5. Unloading and stacking mechanism; 6. Frame; 7. First worktable; 8. Winding mechanism; 9. Punching component; 11. Second worktable; 12. Stacking mechanism; 13. First moving mechanism; 14. Second moving mechanism; 15. Clamping and unwinding component; 16. Feeding group; 17. First support frame; 18. Second support frame; 19. First rotating shaft; 21. First drive motor; 22. First sliding guide rail; 23. First sliding block; 24. Second drive motor; 25. Third support frame; 26. Feeding roller; 27. Air knife; 28. Unloading and correction rod; 29. ​​Correction sensor; 31. Tension floating roller; 32. Winding roller; 33. Air bearing shaft 34. Outer shell; 35. Air inlet; 36. Graphite bushing; 37. Seal; 38. Tension shaft; 39. Fixed base; 41. First rod; 42. Second sliding block; 43. Material pulling component; 44. Fourth support frame; 45. Second sliding guide rail; 46. Clamping assembly; 47. First drive component; 48. Fixed material assembly; 49. First working plate; 51. First side plate; 52. Second working plate; 53. Pressing drive component; 54. Pressing plate; 55. Punching blade; 56. Punching drive component; 57. Spring buffer module; 58. Slice transport guide rail; 59. Slice transport section; 61. Second drive component; 62. Sliding support; 63. Suction section; 65. Vacuum suction cup assembly; 66. Fifth support frame; 67. First material 68. Second material interleaving transfer station; 69. Transfer moving component; 71. Transfer guide rail; 72. First transfer plate; 73. Forward and backward moving cylinder; 74. Lifting cylinder; 75. Lifting block; 76. Sixth support frame; 77. Moving block; 78. First moving drive component; 79. Gripping part; 81. Gripping bracket; 82. Suction cylinder; 83. Suction plate; 84. Auxiliary gripping component; 85. First straight rod; 86. Bending part; 87. Seventh support frame; 88. Stamping electric cylinder; 89. Stamping block; 91. Upper pressure block; 92. Lower pressure block; 93. Air guide port; 94. Release needle; 95. Release drive component; 96. Release hole; 97. Guide drive component; 98. Guide block; 99. Arc-shaped part; 100. Eighth Support frame; 101. Punching cylinder; 102. Punching section; 103. Punching support platform; 104. Punching through slot; 105. Feed chute; 106. Rod guide rail; 108. Rod motor; 200. Incoming material sensor; 201. Limit sensor; 202. Chassis; 203. Material tray; 204. Rotary motor; 205. Scrap cutting mechanism; 206. Scrap collection box; 207. First cutting section; 208. Second cutting section; 301. Cutting cylinder; 302. First film pressing component; 303. Film pressing cylinder; 304. Swinging mechanism; 305. Forward and backward moving component; 306. Left and right moving component; 307. Movable mounting base; 308. Up and down moving component; 401. Suction cup handle; 402. Safety device;403. Mounting base; 404. Safety drive component; 405. Limit actuator. Detailed Implementation

[0051] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0052] Please see Figures 1 to 17 As shown, a nitrocellulose inner cover molding device of the present invention includes a feeding mechanism 1, a punching and cutting mechanism 2, a transfer and loading mechanism, a hot pressing molding mechanism 3, a punching and cutting mechanism 4, a material unloading and stacking mechanism 5, and a control center. The control center is electrically connected to the feeding mechanism 1, the punching and cutting mechanism 2, the transfer and loading mechanism, the hot pressing molding mechanism 3, the punching and cutting mechanism 4, and the material unloading and stacking mechanism 5. The material is fed to the punching and cutting mechanism 2 via the feeding mechanism 1. The punching and cutting mechanism 2 punches the material to form multiple sheets. The transfer and loading mechanism transfers the sheets to the hot pressing molding mechanism 3. The hot pressing molding mechanism 3 hot presses the sheets. The hot-pressed sheets are transferred to the punching and cutting mechanism 4 via the transfer and loading mechanism. The punching and cutting mechanism 4 punches holes in the bottom of the hot-pressed sheets. The punched sheets are then transferred to the material unloading and stacking mechanism 5 via the transfer and loading mechanism. The punching and cutting mechanism 2 includes a frame 6, a first worktable 7 mounted on the frame 6, a winding mechanism 8, a punching component 9, a second worktable 11, and a stacking mechanism 12. The first worktable 7 is located between the feeding mechanism 1 and the winding mechanism 8. The punching component 9 is located above the first worktable 7. The material is unwound from the feeding mechanism 1 to the first worktable 7 and wound up to the winding mechanism 8. The punching component 9 performs punching operations on the material placed on the first worktable 7. The stacking mechanism 12 moves to the first worktable 7, picks up the sheet material punched by the first worktable 7, and moves it to the second worktable 11 for stacking.

[0053] With the control center as the core, the material feeding mechanism 1, the punching and cutting mechanism 2 and other components work together in a coordinated manner. After being unwound by the feeding mechanism 1, the material is conveyed to the first worktable 7 of the punching and cutting mechanism 2 (this worktable is located between the feeding mechanism 1 and the winding mechanism 8). The punching component 9 on the frame 6 punches the material on the table. The punched sheet is picked up by the stacking mechanism 12 and transferred to the second worktable 11 for stacking. The remaining part of the material after punching is wound up by the winding mechanism 8. The subsequent sheet is transferred to the hot pressing forming mechanism 3 and the punching and cutting mechanism in sequence through the intermediate transfer and loading mechanism. Mechanism 4 completes the forming and punching, and finally the material is unloaded by the material stacking mechanism 5. Its beneficial effect is that the centralized control of the control center realizes the automated connection of each process, improves production efficiency, and the layout design of the first workbench 7 and the winding mechanism 8 in the punching and cutting mechanism 2 can realize the continuous conveying and punching of materials, avoiding interruption of material conveying. The stacking mechanism 12 can transfer the sheet material in time to prevent the sheet material from accumulating and affecting the punching accuracy. At the same time, the coordinated operation of each mechanism can ensure the stability and continuity of the nitrocellulose inner cover production process and adapt to the special processing requirements of nitrocellulose material.

[0054] The intermediate transfer mechanism includes a first moving mechanism 13 and a second moving mechanism 14. The first moving mechanism 13 is located between the punching and cutting mechanism 2 and the hot pressing and forming mechanism 3. The first moving mechanism 13 is used to transfer the sheet material on the second workbench 11 to the hot pressing and forming mechanism 3. The hot pressing and forming mechanism 3, the punching and cutting mechanism 4 and the unloading and stacking mechanism 5 are arranged along the same direction. The second moving mechanism 14 is located on the same side of the hot pressing and forming mechanism 3, the punching and cutting mechanism 4 and the unloading and stacking mechanism 5. The second moving mechanism 14 is used to transfer the sheet material hot-pressed by the hot pressing and forming mechanism 3 to the punching and cutting mechanism 4, and to transfer the sheet material punched by the punching and cutting mechanism 4 to the unloading and stacking mechanism 5 for unloading.

[0055] The transfer mechanism is divided into a first moving mechanism 13 and a second moving mechanism 14 with clearly defined functions. The first moving mechanism 13 is positioned between the punching and cutting mechanism 2 and the hot pressing and forming mechanism 3, specifically to receive the sheet material on the second workbench 11 and accurately transfer it to the processing station of the hot pressing and forming mechanism 3. The hot pressing and forming mechanism 3, the punching and cutting mechanism 4, and the unloading and stacking mechanism 5 are arranged sequentially in the same direction, and the second moving mechanism 14 is positioned on the same side of these three, which respectively completes the transfer of the sheet material after hot pressing and forming to the punching and cutting mechanism 4, and the transfer of the sheet material after punching to the unloading and stacking mechanism 5. The transfer operation of structure 5 is coordinated by the control center to achieve action coordination. Its beneficial effect is that the "division of labor and cooperation" dual moving mechanism design makes the material transfer between each process more targeted, avoiding the efficiency loss caused by frequent switching of workstations by a single mechanism. At the same time, the same-direction layout of the hot pressing forming mechanism 3 and the same-side setting of the second moving mechanism 14 can significantly shorten the material transfer path, reduce the transfer time, and effectively avoid interference between different transfer actions, ensuring that the material is transported smoothly in the hot pressing, punching and unloading process, and further improving the continuity and accuracy of the overall production of the equipment.

[0056] The feeding mechanism 1 includes a clamping and unwinding component 15, a feeding group 16, and a pulling component 43. Material is sequentially unwound from the clamping and unwinding component 15 to the feeding group 16 and the pulling component 43, and the three components are arranged sequentially along the material conveying direction to form a continuous feeding channel. The clamping and unwinding component 15 includes a first support frame 17 for holding the material roll, a second support frame 18 parallel to the first support frame 17, a first rotating shaft 19 disposed between the first support frame 17 and the second support frame 18, and a first drive motor 21 for driving the first rotating shaft 19 to rotate and feed material. The bottom of the first support frame 17 is also provided with an adjusting component, which includes a first sliding guide rail 22 and a first sliding block 2 slidably disposed on the first sliding guide rail 22. 3. A second drive motor 24 drives the first sliding block 23 to slide back and forth. The bottom of the first support frame 17 is set on the first sliding block 23. When it is necessary to adapt to the first rotating shaft 19 of different lengths, the second drive motor 24 drives the first sliding block 23 to move back and forth along the first sliding guide rail 22, causing the first support frame 17 to move closer to or away from the second support frame 18 to adjust the distance between the two. The feeding group 16 includes a third support frame 25, a feeding roller 26 set on the third support frame 25, an air knife 27 and a correction mechanism. The air knife 27 is located below the feeding roller 26 and the air outlet of the air knife 27 faces the surface of the material roll, which is used to blow away the adhering substances on the surface of the material roll. The correction mechanism corrects the material roll on the feeding roller 26 that deviates from the feeding track.

[0057] The clamping and unwinding component 15, the feeding group 16, and the pulling component 43 are arranged sequentially along the material conveying direction to form a continuous feeding channel. After being unwound by the clamping and unwinding component 15, the material flows sequentially through the feeding group 16 and the pulling component 43. The clamping and unwinding component 15 supports the first rotating shaft 19 through the first support frame 17 and the second support frame 18. The rotating shaft is driven to rotate by the first drive motor 21 to feed the material. The adjusting component at the bottom of the first support frame 17 can drive the first sliding block 23 to slide along the first sliding guide rail 22 through the second drive motor 24, causing the first support frame 17 to move closer to or away from the second support frame 18, thereby adapting to the first rotating shaft of different lengths. Shaft 19; The third support frame 25 of the feeding group 16 is equipped with a feeding roller 26, and the air knife 27 below it blows away the attached objects towards the material surface through the air outlet. The correction mechanism corrects the material roll that deviates from the feeding track in real time. Its beneficial effect is that the continuous feeding channel design ensures the continuity of material conveying. The adjustment component allows the clamping and unwinding component 15 to be adapted to shafts of different specifications, improving the equipment's versatility. The air knife 27 and the correction mechanism respectively realize the control of material cleaning and conveying accuracy, effectively avoiding the impact of attached objects on product quality and the processing error caused by material roll deviation. Overall, it improves the stability, adaptability and reliability of the feeding process.

[0058] The correction mechanism includes a feeding correction rod 28 and a correction sensor 29. The feeding correction rod 28 is located on the side of the feeding group 16 near the clamping and unwinding component 15. The correction sensor 29 is located on the side of the feeding group 16 near the pulling component 43. The feeding roller 26 is located between the feeding correction rod 28 and the correction sensor 29. The correction sensor 29 collects the lateral offset signal of the material roll in real time and feeds it back to the control center. The control center drives the feeding correction rod 28 to move according to the offset signal to realize real-time correction of the material roll conveying.

[0059] Composed of a feeding correction rod 28 and a correction sensor 29, the feeding correction rod 28 is installed on the side of the feeding group 16 near the clamping and unwinding component 15, while the correction sensor 29 is installed on the side of the feeding group 16 near the pulling component 43. The feeding roller 26 is positioned between the two, forming a "detection-adjustment" layout. During operation, the correction sensor 29 collects the lateral offset signal of the material roll in real time and transmits it to the control center. The control center precisely drives the feeding correction rod 28 according to the offset signal, realizing real-time correction of the material roll conveying. Its beneficial effect is that through the reasonable layout of "front-end adjustment + back-end detection", the correction action is more targeted and timely, which can effectively avoid subsequent processing errors caused by material roll offset, improve the accuracy of material roll conveying, and at the same time, the real-time feedback and response mechanism ensures the stability of the continuous feeding process, providing strong support for the quality of subsequent punching and other processes. Moreover, the structure is simple, the control is efficient, and it is suitable for the precision conveying requirements of nitrocellulose material rolls.

[0060] The feeding roller 26 is provided in multiple sets. The feeding roller 26 is an air bearing 33 roller. The feeding group 16 also includes a tension floating roller 31. A tension floating roller 31 is provided between two sets of feeding rollers 26. The feeding roller 26 includes a winding roller 32 and air bearings 33 arranged on both sides of the winding roller 32. The air bearing 33 includes a housing 34, an air inlet 35 opened on the housing 34, a graphite bushing 36 arranged on the inner side of the housing 34, and a sealing element 37 arranged on the housing 34. The graphite bushing 36 is interference-fitted with the mounting journal of the winding roller 32. The sealing element 37 abuts against the winding roller 32 to prevent relative displacement between the graphite bushing 36 and the winding roller 32. The air inlet 35 is connected to an external air source through an explosion-proof pipe. After the external air source enters the air bearing 33 through the air inlet 35, an air film is formed between the graphite bushing 36 and the winding roller 32, realizing frictionless rotation of the winding roller 32.

[0061] The air bearing 33 includes a housing 34, an air inlet 35, a graphite bushing 36, and a seal 37. The graphite bushing 36 is interference-fitted with the journal of the roller 32. The seal 37 abuts against the roller 32 to prevent relative displacement. The air inlet 35 is connected to an external air source through an explosion-proof pipe. After the air enters, an air film is formed between the graphite bushing 36 and the roller 32, enabling the roller 32 to rotate without friction. Its beneficial effects are that the frictionless rotation design of the air bearing 33 can avoid the generation of sparks and metal shavings by mechanical friction, which is suitable for the processing requirements of flammable, explosive, and highly clean nitrocellulose. The combination of multiple sets of feeding rollers 26 and tension floating rollers 31 can ensure the stability of tension during the material roll conveying process and prevent the material roll from stretching or wrinkling. The structure design of the seal 37 and the interference fit improves the stability of the feeding roller 26 operation. The explosion-proof pipe further enhances the safety protection performance of the equipment, ensuring the accuracy, safety, and continuity of material roll conveying.

[0062] The tension roller 31 includes a tension shaft 38 and two sets of tension adjusting components disposed on both sides of the tension shaft 38. Each tension adjusting component includes a fixed base 39 disposed on a third support frame 25, a first rod 41 disposed below the fixed base 39, and a second sliding block 42 slidably disposed on the first rod 41. The two ends of the tension shaft 38 are respectively fixed to the two sets of second sliding blocks 42 of the two sets of tension adjusting components. When the tension of the material roll increases, the second sliding block 42 is pushed downwards along the first rod 41; when the tension of the material roll decreases, the second sliding block 42 is pushed upwards to reset. The tension adjusting component also includes a locking component for locking the position of the second sliding block 42 on the first rod 41.

[0063] When the tension of the material roll increases, it pushes the second sliding block 42 to slide downward along the first rod 41. When the tension decreases, the second sliding block 42 returns to its original position. At the same time, the locking component of the tension adjustment assembly can fix the second sliding block 42 at a specific position on the first rod 41. Its beneficial effect is that by the adaptive sliding of the second sliding block 42 with the change of the material roll tension, the tension of the material roll can be adjusted in real time, effectively avoiding the problem of material roll stretching and breaking due to excessive tension or the problem of conveying slack and deviation caused by insufficient tension. The locking component can fix the initial tension position according to the needs of material rolls of different specifications, ensuring the stability of conveying. The overall structure is simple and the adjustment is precise, providing a strong guarantee for the material roll conveying quality of subsequent punching and other processes, and adapting to the characteristics of nitrocellulose material rolls that are easily damaged.

[0064] The material pulling component 43 includes a fourth support frame 44, a second sliding guide rail 45 disposed on the fourth support frame 44, a clamping assembly 46 slidably disposed on the second sliding guide rail 45, a first driving member 47 driving the clamping assembly 46 to reciprocate, and a fixed material assembly 48 fixedly disposed on the side of the second sliding guide rail 45. The fixed material assembly 48 is disposed on the side of the material pulling component 43 near the punching and cutting mechanism 2. The fixed material assembly 48 has the same structure as the clamping assembly 46. Both the fixed material assembly 48 and the clamping assembly 46 include a first working plate 49, two sets of first side plates 51 respectively disposed on both sides of the first working plate 49, a second working plate 52 disposed on the two sets of first side plates 51, and a pressing unit disposed on the second working plate 52. The pressing unit includes a pressing driving member 53 and a pressing unit connected to the output end of the pressing driving member 53. The holding plate 54 and the pressure plate 54 are located between the first working plate 49 and the second working plate 52. The pressure driving member 53 is used to drive the pressure plate 54 to approach the first working plate 49 and clamp the material roll on the first working plate 49 between the pressure plate 54 and the first working plate 49. In the initial state, the pressure plate 54 of the positioning component 48 clamps the material roll for positioning, and the clamping component 46 moves to the side and clamps the material roll. The first driving member 47 drives the clamping component 46 to move along the second sliding guide rail 45 towards the punching and cutting mechanism 2, pulling the material roll to the set length. After it is in place, the pressure plate 54 of the positioning component 48 is released, and the material roll is transported to the feeding position of the punching and cutting mechanism 2 for cutting. After cutting, the clamping component 46 releases the material roll and resets under the drive of the first driving member 47. The positioning component 48 re-clamps the material roll, completing one pulling cycle.

[0065] The coordinated action of the material positioning and clamping components 46 enables precise control of the material roll feeding, preventing the material roll from shifting or loosening during the feeding process. The second sliding guide rail 45 ensures the smoothness and positional accuracy of the clamping components 46. The identical component structure facilitates processing, manufacturing, and subsequent maintenance. The continuous cyclic feeding action ensures seamless connection between the feeding and cutting processes, effectively improving production efficiency. At the same time, precise control of the feeding length provides a reliable guarantee for the subsequent punching quality, adapting to the stringent requirements of nitrocellulose material rolls for conveying accuracy.

[0066] The punching component 9 includes a punching blade 55 and a punching drive 56 for driving the punching blade 55 to reciprocate on the frame 6. The bottom of the first worktable 7 is provided with a spring buffer module 57, which protrudes from the reference surface of the first worktable 7 and reciprocates up and down along the reference surface of the first worktable 7. The punching drive 56 drives the punching blade 55 to move downward and press the spring buffer module 57. The spring buffer module 57 and the punching blade 55 together clamp the material on the first worktable 7. The punching blade 55 punches the material to form a sheet. After punching, the punching drive 56 drives the punching blade 55 to return to its original position. The spring buffer module 57 releases the elastic driving force to lift the sheet off the reference surface of the first worktable 7. The stacking mechanism 12 picks up and transports the sheet placed on the spring buffer module 57 to a preset stacking position on the second worktable 11.

[0067] The core components include a punching blade 55, a punching drive 56 that drives the punching blade 55 to reciprocate on the frame 6, and a spring buffer module 57 located at the bottom of the first worktable 7. This module protrudes from the reference surface of the first worktable 7 and can move up and down along the reference surface. During operation, the punching drive 56 drives the punching blade 55 to move downward and presses the spring buffer module 57. The module and the punching blade 55 together clamp the material on the first worktable 7, and the punching blade 55 punches the material to form a sheet. After punching is completed, the punching drive 56 drives the punching blade 55 to return to its original position, and the spring buffer module 57 releases the elastic driving force to release the sheet. The module is lifted and removed from the reference surface of the first worktable 7. Then, the stacking mechanism 12 picks up the sheet material on the module and transports it to the preset stacking position on the second worktable 11. Its beneficial effect is that the coordinated clamping design of the spring buffer module 57 and the punching knife 55 can improve the stability of the material during punching and ensure the punching accuracy of the sheet material. The elastic lifting function of the module can effectively prevent the sheet material from sticking to the worktable and prevent the sheet material from being damaged. At the same time, the punching action and the stacking mechanism 12 are smoothly connected, realizing the efficient transition from sheet material punching to stacking, further improving the production continuity of the equipment, and adapting to the characteristics of nitrocellulose rolls that are easily scratched and require precise processing.

[0068] The stacking mechanism 12 includes a slice transport guide rail 58, a slice transport section 59, and a second drive member 61 that drives the slice transport section 59 to reciprocate on the slice transport guide rail 58, the movement direction of the slice transport section 59 being the same as the movement direction of the feeding mechanism 1; the slice transport section 59 includes a sliding support 62 slidably mounted on the slice transport guide rail 58 and a suction section 63 fixedly mounted on the sliding support 62, the suction section 63 including an explosion-proof cylinder fixed on the sliding support 62 and a vacuum suction cup assembly 65 connected to the output end of the explosion-proof cylinder; when the spring buffer module 57 After the sheet material is lifted, the control center sends a suction command to the stacking mechanism 12. The second drive unit 61 drives the slicing transport unit 59 to move along the slicing transport guide rail 58 to directly above the punching position of the first worktable 7. The explosion-proof cylinder drives the vacuum suction cup to move downwards to fit against the upper surface of the sheet material. The vacuum generator starts to generate negative pressure, and the suction cup tightly grips the sheet material. Then the explosion-proof cylinder resets and drives the sheet material to rise. The second drive unit 61 drives the slicing transport unit 59 to move along the guide rail to the stacking position of the second worktable 11. After reaching the stacking position, the vacuum generator of the explosion-proof cylinder stops working and releases the sheet material, placing the sheet material at the preset stacking position on the second worktable 11.

[0069] The explosion-proof cylinder is designed to be suitable for the flammable and explosive production environment of nitrocellulose. The cooperation between the slice transport guide rail 58 and the second drive component 61 ensures the smoothness and positional accuracy of the slice transport unit 59. The vacuum suction cup assembly 65 can reliably grip the slices without scratching or squeezing them. The entire process is precisely linked with the punching component 9 to achieve rapid transfer and orderly stacking of the slices after punching, effectively improving the continuity of equipment production and the regularity of the slice stacking.

[0070] The second workbench 11 includes a fifth support frame 66, a first material transfer platform 67 and a second material transfer platform 68 disposed on the fifth support frame 66, and a transfer moving component 69; the transfer moving component 69 is located below the first material transfer platform 67 and the second material transfer platform 68, and the transfer moving component 69 includes a transfer guide rail 71, a first transfer plate 72, a front and rear moving cylinder 73 for driving the first transfer plate 72 to reciprocate, a lifting cylinder 74 disposed on the first transfer plate 72, and a lifting block 75 connected to the output end of the lifting cylinder 74; When the stacking mechanism 12 conveys the sheet material to the first material interleaving transfer station 67, and the stacked sheet material reaches the preset quantity, the forward and backward moving cylinder 73 drives the first transfer plate 72 to move along the transfer guide rail 71 to the first material interleaving transfer station 67. The lifting cylinder 74 drives the lifting block 75 to move upward, lifting the stacked sheet material on the first material interleaving transfer station 67. The forward and backward moving cylinder 73 continues to drive the first transfer plate 72 to move to the second material interleaving transfer station 68. The lifting cylinder 74 drives the lifting block 75 to reset downward, placing the stacked sheet material in the sheet material limiting block of the second material interleaving transfer station 68.

[0071] A moving channel is provided between the first material transfer station 67 and the second material transfer station 68. The moving channel between the two transfer stations provides smooth moving space for the transfer moving parts, and coordinates the actions of the two transfer stations and the transfer moving parts.

[0072] Through the collaborative design of the dual material interleaving transfer platform and the transfer moving component 69, the "stacked receiving-transfer temporary storage" of sheet materials is realized simultaneously. The stacking mechanism 12 can continuously transport sheet materials to the empty first material interleaving transfer platform 67 without waiting for the sheet materials to be transferred, which greatly improves the sheet material flow efficiency. The cooperation between the lifting block 75 and the sheet material limiting block can ensure the positional stability of the sheet materials during the transfer process and avoid offset damage. The overall structure is compact and the action is smoothly connected, providing orderly and efficient support for the subsequent transfer and loading mechanism to pick up materials.

[0073] The first moving mechanism 13 includes a sixth support frame 76, a moving block 77 disposed on the sixth support frame 76, a first moving drive 78 that drives the moving block 77 to reciprocate on the sixth support frame 76, and a gripping part 79 fixedly disposed on the moving block 77. The gripping part 79 includes a gripping bracket 81, a suction cylinder 82 disposed on the gripping bracket 81, a suction plate 83 connected to the output end of the suction cylinder 82, and multiple sets of auxiliary gripping parts 84 disposed on the side of the gripping bracket 81. The gripping part 79 is located above the second workbench 11. After the sheet material is stacked, the suction cylinder 82 drives the suction plate 83 to move downwards and approach the sheet material to pick it up. The auxiliary gripping parts 84 are used to abut against the sides of multiple sets of sheet material to assist in positioning. After the suction plate 83 completes the picking up, the first moving drive 78 drives the gripping part 79 to move to the hot pressing forming mechanism 3 to place the sheet material in the hot pressing forming mechanism 3 to wait for hot pressing.

[0074] The synergistic effect of the suction plate 83 and the auxiliary gripper 84 can not only avoid the crushing damage of the sheet material by suction, but also ensure the positioning accuracy of the stacked sheet material by side contact, preventing it from scattering and shifting during the transfer process. The cooperation between the first moving drive 78 and the moving block 77 ensures the stability and positional accuracy of the gripper 79, making the transfer of the sheet material from the second workbench 11 to the hot pressing forming mechanism 3 smooth, effectively improving the process flow efficiency, and adapting to the characteristics of nitrocellulose sheet material that is easily damaged and requires precise transfer.

[0075] The auxiliary gripping component 84 includes a first straight rod 85 connected to the bottom of the gripping bracket 81. The end of the first straight rod 85 away from the bottom of the gripping bracket 81 is provided with a bent portion 86, which is used to abut against the sheet material.

[0076] The structural design of the bending section 86 increases the contact area with the sheet material, improves positioning stability, and prevents the sheet material from scattering or shifting due to uneven force on the sides during transfer. At the same time, the bending section 86 can reduce the squeezing and scratching of the sheet material surface by optimizing the contact angle. Together with the suction plate 83, it forms a dual guarantee of "suction and fixation + side limit", further improving the reliability and accuracy of the stacked sheet material transfer process and meeting the needs of the easily damaged characteristics of nitrocellulose sheet material.

[0077] The hot pressing forming mechanism 3 includes a seventh support frame 87, a stamping electric cylinder 88 mounted on the seventh support frame 87, a stamping block 89 slidably mounted on the seventh support frame 87, an upper pressing block 91 mounted on the stamping block 89, and a lower pressing block 92 fixedly mounted on the seventh support frame 87. The output end of the stamping electric cylinder 88 is connected to the stamping block 89. The stamping electric cylinder 88 drives the stamping block 89 to move downward, causing the upper pressing block 91 to approach the lower pressing block 92, and hot pressing the sheet material placed in the lower pressing block 92.

[0078] The 88-type electric cylinder for stamping can precisely control the pressure and downward displacement, ensuring the dimensional accuracy and consistency of the sheet material during hot pressing. The corresponding arrangement of the upper pressure block 91 and the lower pressure block 92 ensures that the sheet material is subjected to uniform force, improving the molding quality. The overall structure is stable and the transmission is smooth, reducing vibration interference during the hot pressing process. It is suitable for the process requirements of hot pressing of nitrocellulose sheets, and is also easy to install, debug and maintain, improving the stability of equipment operation.

[0079] The lower pressing block 92 is provided with multiple sets of air inlets 93, which are used to discharge the gas generated during hot pressing.

[0080] The air vent 93 effectively prevents gas residue from remaining between the sheet and the press during hot pressing, preventing quality defects such as bubbles, dents, and delamination after sheet forming. At the same time, it ensures uniform pressure transmission during hot pressing, improves the density and dimensional stability of the sheet forming, and is suitable for the process characteristics of nitrocellulose sheet forming that easily generates volatile gases during hot pressing, further ensuring the quality of product forming.

[0081] The bottom of the pressing block 92 is provided with a release mechanism, which includes a release pin 94 and a release drive 95 that drives the release pin 94 to move up and down reciprocally. The bottom of the pressing block 92 is provided with a release hole 96. After hot pressing is completed, the release drive 95 drives the release pin 94 to move upward to abut against the bottom of the hot-pressed sheet material and release it.

[0082] The release mechanism avoids the problem of the sheet material sticking to the lower pressure block 92 after hot pressing, which makes it difficult to remove. It prevents the sheet material from being deformed or damaged by forced removal, ensuring the structural integrity and appearance quality of the molded sheet material. At the same time, the automated release action improves the demolding efficiency, making the connection between the hot pressing process and the subsequent transfer process smoother. It is suitable for the process characteristics of nitrocellulose hot pressing molded parts that are prone to sticking to the mold. The structure is simple and the operation is reliable.

[0083] The side of the pressing block 92 is also provided with multiple sets of guiding mechanisms. The guiding mechanism includes a guiding drive 97 and a guiding block 98 connected to the output end of the guiding drive 97. The end of the guiding block 98 away from the guiding drive 97 is provided with an arc-shaped part 99. The multiple sets of arc-shaped parts 99 are used to abut against the side of the sheet material and jointly guide the sheet material onto the pressing block 92.

[0084] The 99 arc design avoids scratching the sheet surface during the alignment process. The synergistic effect of multiple groups ensures the symmetry and accuracy of the sheet positioning, prevents sheet displacement during hot pressing, which may lead to dimensional deviations or appearance defects, and ensures the consistency of hot pressing quality. It is suitable for the hot pressing process that requires precise positioning of nitrocellulose sheets. The structural design fits the side contour of the sheet, and the alignment action is smooth and reliable.

[0085] The punching and cutting mechanism 4 includes an eighth support frame 100, a punching cylinder 101 disposed on the eighth support frame 100, a punching part 102 disposed on the eighth support frame 102, and a punching support platform 103 disposed below the punching part 102; the punching cylinder 101 is used to drive the punching part 102 to move up and down on the eighth support frame 100 to approach or move away from the punching support platform 103, and punch the sheet material placed on the punching support platform 103.

[0086] The 101 punching cylinder drive can stably control the punching force and stroke, ensuring the accuracy and consistency of the punching hole diameter and position. The upper and lower corresponding layout ensures that the sheet material is subjected to uniform force during punching, avoiding damage such as cracks and deformation. It is suitable for the fragile texture of nitrocellulose molding sheet material and the characteristics of precision machining. The overall structure is compact and the action response is fast, which improves the efficiency and reliability of the punching process and provides qualified products for subsequent material unloading and stacking.

[0087] The bottom of the punching support platform 103 is provided with a punching through groove 104 corresponding to the punching head of the punching section 102, and the bottom of the punching support platform 103 is provided with a feeding groove 105 connected thereto. The waste material after punching flows through the punching through groove 104 to the feeding groove 105 and is then discharged to the external waste box.

[0088] The punching channel 104 enables real-time automatic discharge of punching waste, preventing waste from accumulating in the punching area and affecting subsequent punching accuracy, or scratching the surface of the sheet material and causing quality defects. At the same time, it keeps the processing area clean, reduces the manual waste cleaning process, improves production efficiency, and is suitable for the clean processing requirements of timely handling of nitrocellulose punching waste. The structural design is simple and the waste discharge path is smooth, ensuring the continuity and reliability of the punching process.

[0089] The material feeding and stacking mechanism 5 includes a bar guide rail 106, a turntable mounted on the bar guide rail 106, and a bar motor 108 that drives the turntable to move up and down on the bar guide rail 106. A material receiving sensor 200 is mounted on the turntable, and a limit sensor 201 is mounted at the bottom of the bar guide rail 106. The turntable includes a base 202, multiple sets of material trays 203 mounted on the base 202, and a rotation motor 204 that drives the turntable to rotate. When the punched sheet material is transferred via the intermediate transfer mechanism... When the material is delivered to the material tray 203, the material receiving sensor 200 senses the arrival of the material and generates a material receiving command. The control center controls the rod motor 108 to drive the turntable to move downwards. After continuously stacking to the preset height, the turntable descends to the bottom of the rod guide rail 106 and triggers the limit sensor 201. After the limit sensor 201 senses the material, it generates a full material command. The control center controls the rotation motor 204 to drive the chassis 202 to rotate according to the full material command, and rotates the empty material tray 203 to the stacking position to wait for stacking.

[0090] The automated stacking and pallet changing processes are achieved through the coordinated control of sensors and motors, eliminating the need for manual intervention. The multi-pallet 203 design significantly improves continuous stacking capacity and reduces downtime. Precise control of turntable lifting and rotation ensures the neatness of the sheet stacking and avoids sheet damage. The overall process is seamless, effectively improving material feeding and stacking efficiency, and meeting the requirements for orderly and clean storage of nitrocellulose molding sheets.

[0091] Below the winding mechanism 8, a waste material cutting mechanism 205 is also provided. The waste material cutting mechanism 205 includes a waste material collection box 206, a first cutting section 207 and a second cutting section 208 disposed above the waste material collection box 206, a cutting cylinder 301 for driving the first cutting section 207 to move closer to the second cutting section 208, a first film pressing component 302 disposed on the first cutting section 207, a film pressing cylinder 303 for driving the first film pressing component 302 to press the film, and a swinging mechanism 304 disposed on the side of the waste material collection box 206. The film pressing cylinder 303 drives the first film pressing component 302 to press the waste material roll film, and the cutting cylinder 301 drives the first cutting section 207 to move closer to the second cutting section 208 to cut the waste material roll film. When a certain amount is cut, the swinging mechanism 304 drives the waste material collection box 206 to shake and shake the waste material evenly.

[0092] The coordinated action of pressing and cutting can prevent the waste material from shifting during cutting, ensuring neat cut edges. The swing mechanism 304 can prevent the waste material from accumulating locally in the collection box, improving the utilization rate of collection space. The automated cutting and collection process reduces manual intervention and labor intensity, while keeping the processing area clean. It is suitable for clean production requirements where nitrocellulose waste needs to be handled in an orderly manner. The compact structural design and smooth action connection ensure the high efficiency and reliability of waste material treatment.

[0093] The second moving mechanism 14 includes a front-to-back moving component 305, a left-to-right moving component 306 disposed on the front-to-back moving component 305, a movable mounting base 307 disposed on the left-to-right moving component 306, a vertical moving component 308 disposed on the movable mounting base 307, and a suction cup transporter 401 disposed on the vertical moving component 308. The suction cup transporter 401 is provided in three sets, and the three sets of suction cup transporters 401 are arranged at intervals along the arrangement direction of the hot pressing forming mechanism 3, the punching and cutting mechanism 4, and the unloading and stacking mechanism 5, respectively corresponding to the unloading station of the hot pressing forming mechanism 3, the infeed and unloading station of the punching and cutting mechanism 4, and the infeed station of the unloading and stacking mechanism 5, for synchronously or sequentially adsorbing and fixing the sheet material at each station to achieve continuous transport.

[0094] The three sets of suction cup handling arms 401 are precisely designed to correspond to each workstation, enabling continuous operation of sheet material transfer after hot pressing, punching and unloading, and unloading and stacking. The synchronous or sequential action modes flexibly adapt to different production rhythms. The multi-directional moving parts ensure the accuracy of handling and positioning, effectively avoiding deviation and damage during sheet material transfer, significantly shortening the waiting time between processes, and significantly improving the overall production efficiency of the equipment. It is suitable for the process requirements of precise and continuous transfer of nitrocellulose molding sheets.

[0095] Safety devices 402 are provided on the clamping assembly 46 and the fixing assembly 48 of the feeding mechanism, the punching mechanism, the hot pressing forming mechanism 3, and the punching mechanism. The safety device 402 includes a mounting base 403, a safety drive 404, and a limit actuator. When the equipment receives a manual stop and material change command, the safety drive 404 drives the limit actuator to rise vertically, forming a physical limit on the moving parts of the corresponding mechanism to prevent malfunction. When the material change is completed and the equipment receives a start command, the safety drive 404 drives the limit actuator to descend and reset, releasing the limit.

[0096] This nitrocellulose inner cover forming equipment includes a feeding mechanism 1, a punching and cutting mechanism 2, a transfer and loading mechanism, a hot pressing forming mechanism 3, a punching and cutting mechanism 4, a material unloading and stacking mechanism 5, and a control center that links all components. The material is formed sequentially through each mechanism: In the feeding mechanism 1, the material clamping and unwinding component 15 uses adjustable spacing first / second bearing frames to adapt to shafts of different lengths to achieve unwinding. Air bearings 33 reduce friction, tension rollers 31 adjust the tension of the material roll, and air knife 27 removes impurities and the deviation correction mechanism corrects deviations in real time to complete the feeding. The material clamping / fixing assembly 48 of the material pulling component 43 clamps the material roll through the pressing unit, and is precisely pulled to the punching and cutting mechanism 2 by the first driving component 47. On the first worktable 7 of the punching and cutting mechanism 2, the punching blade 55 of the punching component 9, driven by the punching driving component 56, works with the spring buffer module 57 at the bottom of the first worktable 7 to clamp the material and punch it into sheets. The vacuum suction cup assembly 65 of the stacking mechanism 12 picks up the sheets and transfers them to the second worktable 11. The transfer moving component 69 of this worktable drives the lifting block 75 to lift the first sheet into the second worktable 11. The stacked sheet materials on the material transfer station 67 are transferred to the second material transfer station 68 for alternating handling. The first moving mechanism 13 of the transfer mechanism grabs the sheet material from the second workbench 11 and sends it to the hot pressing forming mechanism 3. This mechanism drives the upper pressing block 91 and the lower pressing block 92 with air vents 93 and a guiding mechanism to perform hot pressing forming through the stamping electric cylinder 88. After hot pressing, the sheet material is ejected by the release mechanism. The second moving mechanism 14, through multi-directional moving parts and three sets of suction cup handling hands 401, simultaneously or sequentially transfers the hot-pressed sheet material to the punching and cutting section. Mechanism 4 completes bottom punching (waste material is discharged through the feeding chute 105) and is finally transferred to the feeding and stacking mechanism 5. The rod motor 108 of this mechanism drives the turntable to lift and stack along the rod guide rail 106. The rotating motor 204 drives multiple sets of material trays 203 to switch. The material receiving sensor 200 and the limit sensor 201 control the stacking height and the full material tray change, respectively. At the same time, the waste material cutting mechanism 205 below the winding mechanism 8 cuts the waste material through the cutting part and the pressing part. The swing mechanism 304 assists the waste material collection box 206 to collect the material evenly.

[0097] The rest of this embodiment is the same as that in Embodiment 1. Features not explained in this embodiment are explained using the methods in Embodiment 1, and will not be repeated here.

[0098] The above description is only a preferred embodiment of the present invention. For those skilled in the art, there will be changes in the specific implementation and application scope based on the ideas of the present invention. The content of this specification should not be construed as a limitation of the present invention.

Claims

1. A nitrocellulose inner cover molding device, characterized in that: It includes a feeding mechanism (1), a punching and cutting mechanism (2), a transfer and loading mechanism, a hot pressing and forming mechanism (3), a punching and cutting mechanism (4), a material unloading and stacking mechanism (5), and a control center. The control center is electrically connected to the feeding mechanism (1), the punching and cutting mechanism (2), the transfer and loading mechanism, the hot pressing and forming mechanism (3), the punching and cutting mechanism (4), and the material unloading and stacking mechanism (5). The material is fed to the punching and cutting mechanism (2) via the feeding mechanism (1). The punching and cutting mechanism (2) punches the material to form multiple sheets. The transfer and loading mechanism transfers the sheets to the hot pressing and forming mechanism (3). The hot pressing and forming mechanism (3) hot presses and forms the sheets. The hot-pressed sheets are transferred to the punching and cutting mechanism (4) via the transfer and loading mechanism. The punching and cutting mechanism (4) punches holes in the bottom of the hot-pressed sheets. The punched sheets are transferred to the material unloading and stacking mechanism (5) via the transfer and loading mechanism for unloading. The punching and cutting mechanism (2) includes a frame (6), a first worktable (7) set on the frame (6), a winding mechanism (8), a punching component (9), a second worktable (11), and a stacking mechanism (12). The first worktable (7) is located between the feeding mechanism (1) and the winding mechanism (8). The punching component (9) is located above the first worktable (7). The material is unwound to the first worktable (7) by the feeding mechanism (1) and wound to the winding mechanism (8). The punching component (9) performs punching operation on the material placed on the first worktable (7). The stacking mechanism (12) moves to the first worktable (7), picks up the punched sheet material from the first worktable (7), and moves it to the second worktable (11) for stacking.

2. The nitrocellulose inner cover forming equipment according to claim 1, characterized in that: The transfer mechanism includes a first moving mechanism (13) and a second moving mechanism (14). The first moving mechanism (13) is located between the punching and cutting mechanism (2) and the hot pressing and forming mechanism (3). The first moving mechanism (13) is used to transfer the sheet material on the second workbench (11) to the hot pressing and forming mechanism (3). The hot pressing and forming mechanism (3), the punching and cutting mechanism (4) and the unloading and stacking mechanism (5) are arranged in the same direction. The second moving mechanism (14) is located on the same side of the hot pressing and forming mechanism (3), the punching and cutting mechanism (4) and the unloading and stacking mechanism (5). The second moving mechanism (14) is used to transfer the sheet material hot-pressed by the hot pressing and forming mechanism (3) to the punching and cutting mechanism (4) and to transfer the sheet material punched by the punching and cutting mechanism (4) to the unloading and stacking mechanism (5) for unloading.

3. The nitrocellulose inner cover molding equipment according to claim 1, characterized in that: The feeding mechanism (1) includes a clamping and unwinding component (15), a feeding group (16), and a pulling component (43). The material is unwound sequentially from the clamping and unwinding component (15) to the feeding group (16) and the pulling component (43), and the three are arranged sequentially along the material conveying direction to form a continuous feeding channel. The clamping and unwinding component (15) includes a first support frame (17) for placing the material roll, a second support frame (18) parallel to the first support frame (17), a first rotating shaft (19) disposed between the first support frame (17) and the second support frame (18), and a first drive motor (21) for driving the first rotating shaft (19) to rotate and feed the material. The bottom of the first support frame (17) is also provided with an adjustment component, which includes a first sliding guide rail (22) and a first sliding block (2) slidably disposed on the first sliding guide rail (22). 3) and a second drive motor (24) that drives the first sliding block (23) to slide back and forth. The bottom of the first support frame (17) is set on the first sliding block (23). When it is necessary to adapt to the first rotating shaft (19) of different lengths, the second drive motor (24) drives the first sliding block (23) to move back and forth along the first sliding guide rail (22), and drives the first support frame (17) to move closer to or away from the second support frame (18) to adjust the distance between the two. The feeding group (16) includes a third support frame (25), a feeding roller (26) set on the third support frame (25), an air knife (27) and a correction mechanism. The air knife (27) is located below the feeding roller (26) and the air outlet of the air knife (27) faces the surface of the material roll. It is used to blow away the adhering substances on the surface of the material roll. The correction mechanism corrects the material roll on the feeding roller (26) that deviates from the feeding track.

4. The nitrocellulose inner cover forming equipment according to claim 3, characterized in that: The material pulling component (43) includes a fourth support frame (44), a second sliding guide rail (45) disposed on the fourth support frame (44), a clamping assembly (46) slidably disposed on the second sliding guide rail (45), a first driving member (47) for driving the clamping assembly (46) to reciprocate, and a fixed material assembly (48) fixedly disposed on the side of the second sliding guide rail (45). The fixed material assembly (48) is disposed on the side of the material pulling component (43) near the punching and cutting mechanism (2). The fixed material assembly (48) has the same structure as the clamping assembly (46). Both the fixed material assembly (48) and the clamping assembly (46) include a first working plate (49), two sets of first side plates (51) respectively disposed on both sides of the first working plate (49), a second working plate (52) disposed on the two sets of first side plates (51), and a pressing unit disposed on the second working plate (52). The pressing unit includes a pressing driving member (53) and a pressing unit connected to the output end of the pressing driving member (53). The plate (54) and the holding plate (54) are located between the first working plate (49) and the second working plate (52). The holding drive (53) is used to drive the holding plate (54) to approach the first working plate (49) and clamp the material roll on the first working plate (49) between the holding plate (54) and the first working plate (49). In the initial state, the holding plate (54) of the positioning assembly (48) clamps the material roll and positions it. The clamping assembly (46) moves to the side close to the feeding group (16) and clamps the material. The first driving component (47) drives the clamping assembly (46) to move along the second sliding guide rail (45) toward the punching and cutting mechanism (2) to pull the roll to the set length. After it is in place, the pressing plate (54) of the fixing assembly (48) is released, and the roll is transported to the feeding position of the punching and cutting mechanism (2) for cutting. After cutting, the clamping assembly (46) releases the roll and resets under the drive of the first driving component (47). The fixing assembly (48) clamps the roll again to complete one pulling cycle.

5. The nitrocellulose inner cover molding equipment according to claim 1, characterized in that: The punching component (9) includes a punching blade (55) and a punching drive (56) for driving the punching blade (55) to reciprocate on the frame (6). The bottom of the first worktable (7) is provided with a spring buffer module (57). The spring buffer module (57) protrudes from the reference surface of the first worktable (7) and moves up and down along the reference surface of the first worktable (7). The punching drive (56) drives the punching blade (55) to move downward to press the spring buffer module (57). The spring buffer module (57) and the punching blade (55) together clamp the material on the first worktable (7). The punching blade (55) punches the material to form a sheet. After punching, the punching drive (56) drives the punching blade (55) to reset upward. The spring buffer module (57) releases the elastic driving force to lift the sheet off the reference surface of the first worktable (7). The stacking mechanism (12) picks up and transports the sheet placed on the spring buffer module (57) to the preset stacking position of the second worktable (11).

6. The nitrocellulose inner cover forming equipment according to claim 1, characterized in that: The second workbench (11) includes a fifth support frame (66), a first material transfer station (67) and a second material transfer station (68) mounted on the fifth support frame (66), and a transfer moving component (69). The transfer moving component (69) is located below the first material transfer station (67) and the second material transfer station (68). The transfer moving component (69) includes a transfer guide rail (71), a first transfer plate (72), a front and rear moving cylinder (73) that drives the first transfer plate (72) to move back and forth, a lifting cylinder (74) mounted on the first transfer plate (72), and a lifting block (75) connected to the output end of the lifting cylinder (74). When the stacking mechanism (12) delivers the sheet material to the first material transfer station (67), and the stacked sheet material reaches the preset quantity, the front and rear moving cylinder (73) drives the first transfer plate (72) to move along the transfer guide rail (71) to the bottom of the first material transfer station (67), and the lifting cylinder (74) drives the lifting block (75) to move upward, lifting the stacked sheet material on the first material transfer station (67). The front and rear moving cylinder (73) continues to drive the first transfer plate (72) to move to the second material transfer station (68), and the lifting cylinder (74) drives the lifting block (75) to reset downward, placing the stacked sheet material in the sheet material limiting block of the second material transfer station (68).

7. The nitrocellulose inner cover molding equipment according to claim 2, characterized in that: The first moving mechanism (13) includes a sixth support frame (76), a moving block (77) disposed on the sixth support frame (76), a first moving drive (78) that drives the moving block (77) to reciprocate on the sixth support frame (76), and a gripping part (79) fixedly disposed on the moving block (77). The gripping part (79) includes a gripping bracket (81), a suction cylinder (82) disposed on the gripping bracket (81), a suction plate (83) connected to the output end of the suction cylinder (82), and a gripping part (89) fixedly disposed on the gripping block (77). Multiple sets of auxiliary gripping parts (84) are taken from the side of the support (81); the gripping part (79) is located above the second workbench (11). After the sheet material is stacked, the suction cylinder (82) drives the suction plate (83) to move downward and approach the sheet material to pick it up. The auxiliary gripping parts (84) are used to abut against the side of multiple sets of sheet materials to assist in positioning. After the suction plate (83) completes the picking up, the first moving drive (78) drives the gripping part (79) to move to the hot pressing forming mechanism (3) to place the sheet material in the hot pressing forming mechanism (3) to wait for hot pressing.

8. The nitrocellulose inner cover molding equipment according to claim 1, characterized in that: The hot pressing forming mechanism (3) includes a seventh support frame (87), a stamping electric cylinder (88) set on the seventh support frame (87), a stamping block (89) slidably set on the seventh support frame (87), an upper pressing block (91) set on the stamping block (89), and a lower pressing block (92) fixedly set on the seventh support frame (87). The output end of the stamping electric cylinder (88) is connected to the stamping block (89). The stamping electric cylinder (88) drives the stamping block (89) to move downward, causing the upper pressing block (91) to approach the lower pressing block (92) and hot press the sheet material placed in the lower pressing block (92).

9. The nitrocellulose inner cover molding equipment according to claim 1, characterized in that: The punching and cutting mechanism (4) includes an eighth support frame (100), a punching cylinder (101) disposed on the eighth support frame (100), a punching part (102) disposed on the eighth support frame (100), and a punching support platform (103) disposed below the punching part (102); the punching cylinder (101) is used to drive the punching part (102) to move up and down on the eighth support frame (100) to approach or move away from the punching support platform (103) to punch the sheet material placed on the punching support platform (103).

10. The nitrocellulose inner cover molding equipment according to claim 1, characterized in that: The material feeding and stacking mechanism (5) includes a bar guide rail (106), a turntable mounted on the bar guide rail (106), and a bar motor (108) that drives the turntable to move up and down on the bar guide rail (106). The turntable is equipped with a material receiving sensor (200), and a limit sensor (201) is provided at the bottom of the bar guide rail (106). The turntable includes a base (202), multiple sets of material trays (203) mounted on the base (202), and a rotation motor (204) that drives the turntable to rotate. When the punched sheet material is transferred through the intermediate transfer mechanism... When the material is transferred to the material tray (203), the material sensor (200) senses the arrival of the material and generates a material receiving command. The control center controls the rod motor (108) to drive the turntable to move downward. After continuously stacking to the preset height, the turntable descends to the bottom of the rod guide rail (106) and triggers the limit sensor (201). After the limit sensor (201) senses the material, it generates a full material command. The control center controls the rotating motor (204) to drive the chassis (202) to rotate according to the full material command, and rotates the empty material tray (203) to the stacking position to wait for stacking.

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