A flexible packaging high-precision shaping mechanism based on multi-roller linkage

Abstract

The present application relates to the technical field of medicine package shaping, and particularly relates to a flexible package high-precision shaping mechanism based on multi-roller linkage, which comprises a workbench, a positioning device, a connecting tool, a shaping device, a power assembly and an adjusting assembly, the positioning device is fixedly installed on both sides of the workbench, and the positioning device is used for limiting the connecting tool; the connecting tool is rotatably installed on the positioning device, and the connecting tool is used for limiting the medicine package to be shaped in the shaping device; the shaping device is fixedly installed on the workbench, and the shaping device is used for automatically shaping the medicine package through multi-roller shaft linkage; the power assembly is fixedly installed on one side of the shaping device, and the power assembly is used for providing power for the shaping device; and the adjusting assembly is fixedly installed on the outer side of the shaping device, and the adjusting device is used for contacting the medicine package through the adjusting cylinder, so that the shaping of the medicine package is completed in cooperation with the shaping device.

Description

Technical Field

[0001] This invention relates to the field of pharmaceutical packaging shaping technology, specifically to a high-precision shaping mechanism for flexible packaging based on multi-roller linkage. Background Technology

[0002] The shaping of the drug packaging is a crucial step in the production process, directly impacting product quality, safety, and production efficiency. Current methods primarily rely on manual shaping, requiring workers to manually pour, shake, knead, and tighten the packaging material, repeating these steps until all the drug granules are poured in and the shaping is complete. Due to the manual nature of the process, the quality of kneading varies among different personnel, resulting in inconsistent product quality. Furthermore, the production cycle is slow, and the workload is high. This method is inefficient, prone to errors, and fails to meet the needs of modern drug packaging production.

[0003] Therefore, the present invention provides a high-precision shaping mechanism for flexible packaging based on multi-roller linkage to solve the above problems. Summary of the Invention

[0004] The technical problem this invention aims to solve is as follows: Existing outer diameter shaping primarily relies on manual methods. This requires manual intervention to pour, shake, knead, and tighten the material, repeating these steps until all the granules are poured in and the shaping is complete. Due to the manual nature of the process, the quality of kneading varies among different personnel, resulting in inconsistent product quality. Furthermore, the production cycle is low, and the workload is substantial. This method is inefficient, prone to errors, and fails to meet the needs of modern propellant production.

[0005] This invention provides the following technical solution: a high-precision shaping mechanism for flexible packaging based on multi-roller linkage, comprising a worktable, a positioning device, a connecting fixture, a shaping device, a power component, and an adjustment component. Positioning devices are fixedly installed on both sides of the worktable, and these positioning devices are used to limit the positioning of the connecting fixture. The connecting fixture is rotatably mounted on the positioning device, and the connecting fixture is used to limit the medicine package to be shaped within the shaping device. The shaping device is fixedly installed on the worktable, and the shaping device is used to automatically shape the medicine package through multi-roller linkage. The power component is fixedly installed on one side of the shaping device, and the power component is used to provide power to the shaping device. The adjustment component is fixedly installed on the outside of the shaping device, and the adjustment device is used to adjust a cylinder to make the shaping device contact the medicine package, thereby cooperating with the shaping device to complete the shaping of the medicine package.

[0006] Preferably, the positioning device includes a fixed block, a displacement track, a displacement bracket, a displacement cylinder, a first rotating bearing, a first center, and a positioning center assembly. The fixed block is fixedly installed on the worktable. The displacement track is fixedly installed on both sides of the fixed block. The displacement bracket is slidably installed on the displacement track. The displacement cylinder output end is fixedly installed on the displacement bracket. The displacement cylinder is fixedly installed on the fixed block. The first rotating bearing is fixedly installed inside the displacement track. The first center for fixing the medicine pack is fixedly installed on the rotating part at the center of the first rotating bearing. The positioning center assembly is fixedly installed on the other side of the worktable.

[0007] Preferably, the positioning center assembly includes a fixed frame, a positioning rail, a positioning cylinder, a positioning bracket, a second rotating bearing, and a second center. The fixed frame is fixedly installed on the side of the worktable away from the fixed block. The positioning rail is fixedly installed on the fixed frame. The positioning bracket is slidably installed on the positioning rail. The positioning cylinder is fixed on the fixed frame and its output end is fixedly connected to the positioning bracket. The second rotating bearing is fixedly installed on the positioning bracket, and the second center is fixedly installed on the second rotating bearing.

[0008] Preferably, the shaping device includes a supporting base plate, a shaping bracket, a fixed bushing, a fixed bearing, a shaping roller shaft, and a driven assembly. The supporting base plate is fixedly installed on the worktable, the shaping bracket is symmetrically installed on the worktable, and fixed bushings are symmetrically fixedly installed on both the supporting base plate and the shaping bracket. Fixed bearings are installed on the fixed bushings, and the shaping roller shaft is rotatably installed on the fixed bearings. A driven assembly is rotatably installed above the shaping roller shaft.

[0009] Preferably, the driven assembly includes a first hinge sleeve, a first bracket, a connecting rod, a connecting plate, a first driven roller, a second bracket, a second hinge sleeve, a rotating bracket, and a second driven roller; the first hinge sleeve is fixedly installed on the worktable, the first bracket is rotatably installed on the first hinge sleeve, the connecting rod is slidably installed on the first bracket, the connecting plate is fixedly installed on the connecting rod, and the first driven roller is rotatably installed on the connecting plate; the second bracket is fixedly installed on the worktable, the second hinge sleeve is fixedly installed on the top of the second bracket, the rotating bracket is rotatably installed on the second hinge sleeve, the connecting rod is slidably installed on the rotating bracket, the connecting plate is fixedly installed on the connecting rod, and the second driven roller is rotatably installed on the connecting plate.

[0010] Preferably, a vibration motor for vibration is fixedly installed at the bottom of the support base plate, and the vibration motor is mounted on the workbench; A vibrator is fixedly installed on the connecting plate, and a buffer spring is fixedly installed between the connecting rod and the first bracket and the rotating bracket.

[0011] Preferably, a push-pull cylinder is hinged between the workbench and the first support, a cylinder frame is fixedly mounted on the second support, and a push-pull cylinder is hinged between the cylinder frame and the rotating support.

[0012] Preferably, the power assembly includes a power frame, a motor bracket, a power motor, a universal joint, and a power shaft. The power frame is fixedly installed on one side of the worktable, the motor bracket is fixedly installed on the power frame, the power motor is fixedly installed on the motor bracket, the universal joint is installed at the output end of the power motor, and the power shaft is installed at the other end of the universal joint. The power shaft is fixedly connected to the shaping roller shaft.

[0013] Preferably, the adjustment assembly includes a hinge bracket, a hinge block, and an adjustment cylinder. The hinge bracket is fixedly installed between the worktable and the shaping bracket, the hinge block is fixedly installed on the worktable, and the adjustment cylinder is fixedly installed between the hinge block and the shaping bracket.

[0014] Preferably, a torque sensor is installed on the output shaft of the power motor, and the torque sensor is fixedly installed on the motor bracket.

[0015] The beneficial effects of this invention are as follows: 1. This invention utilizes the bidirectional synchronous extension and retraction of displacement and positioning cylinders to drive the displacement and positioning supports to move laterally with high precision along a linear track. This allows for automated centering and clamping of both ends of the drug pack to be shaped via a direct-push structure of the first and second centers, avoiding the eccentricity errors, low efficiency, and safety risks associated with manual clamping caused by traditional manual clamping. Simultaneously, the positioning center assembly employs an axially decoupled layout with rotating bearings connected in series with the centers, forming stable and low-resistance rotational fulcrums at both ends of the drug pack. This ensures that the flexible drug pack maintains smooth and stable rotation even under multi-faceted compression, improving circumferential force consistency. Combined with a specially designed lifting limit device on the worktable and a rapid locking and releasing mechanism of the cylinders at both ends, this invention eliminates the high labor intensity of manual alignment and achieves stable support and precise pushing composite positioning at the loading and unloading stations. It allows for quick and safe switching of processing states without complex manual calibration, significantly improving the continuity of the production line cycle and the physical reliability of the overall transmission process. This meets the stringent requirements of automated loading and unloading and positioning accuracy in the production of high-cycle energetic materials.

[0016] 2. This invention transforms traditional single-sided static extrusion into a closed-loop kneading structure with multiple sets of driven rollers and active shaping rollers fully enveloping and adaptively fitting. This is achieved by adjusting the cylinder to drive the shaping bracket to swing around the hinged bracket, combined with the push-pull cylinder to drive the first bracket and the rotating bracket to rotate around their respective hinged sleeves for mold closing. This avoids wrinkling of flexible packaging caused by excessive local force or damage caused by rigid extrusion. Simultaneously, the driven components employ a flexible sliding guide layout with connecting rods and buffer springs, forming a dynamic buffer space outside the shaping unit. This ensures that the multiple driven rollers can adjust to minute changes in the actual enveloping diameter of the medicine package. Real-time fine-tuning of posture and maintenance of uniform pressure improve the consistency of outer circle forming; the actively rotating shaping roller shaft, in conjunction with the passive following rotation of the driven roller above, completely eliminates the risk of relative sliding friction between the component and the flexible packaging bag. On the other hand, through adaptive air pressure and multi-roller linkage without dead angles, continuous automated operation of flexible deformation and diameter reduction is achieved in situ at the shaping station. High-standard forming can be achieved without repeated manual kneading, which significantly improves the absolute consistency of the outer diameter of large batches of flexible medicine bags and the forming yield, meeting the needs of high-quality and standardized operation in modern drug packaging production.

[0017] 3. This invention integrates a vibration motor and a vibrator at the bottom of the support base plate and the upper connecting plate, respectively, driving the upper and lower components to generate multi-directional high-frequency coordinated physical vibration. This transforms the static accumulation of granular or powdery materials inside the medicine package into a dense state with accelerated flow and sufficient air release, avoiding molding collapse and quality defects caused by internal voids or local looseness during multi-roller kneading. Simultaneously, the power transmission mechanism adopts a flexible series connection layout of a power motor and a universal joint-power shaft, forming an efficient angular error compensation link between the drive end and the high-frequency operating execution end, ensuring smooth transmission and improving efficiency. The mechanical structure has a long service life. More importantly, the temperature and electrostatic sensors on the surface of the shaping roller, combined with the torque sensor at the motor end, eliminate the risk of combustion and explosion caused by static electricity accumulation or abnormal temperature rise of energetic materials due to high-frequency friction. On the other hand, through the negative feedback linkage adjustment mechanism of torque resistance and cylinder pressure, physical interference warning and compliant unloading are achieved in place at the shaping station for active defense. Mechanical jamming and packaging breakage can be effectively avoided without close human supervision, significantly improving the inherent safety and process control capabilities of high-precision automatic shaping of flexible packaging for special dangerous goods. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is an overall schematic diagram of the present invention; Figure 2 This is a schematic diagram of the adjustment component of the present invention; Figure 3 This is a schematic diagram showing the installation position of the positioning top component of the present invention; Figure 4 This is a schematic diagram of the positioning device of the present invention; Figure 5 This is a schematic diagram of the positioning top component of the present invention; Figure 6 This is a schematic diagram of the shaping device of the present invention; Figure 7 This is a schematic diagram of the driven component of the present invention; Figure 8 This is a schematic diagram of the installation position of the push-pull cylinder of the present invention; Figure 9 This is a schematic diagram of the installation position of the vibration motor of the present invention; Figure 10 This is a schematic diagram of the power component of the present invention.

[0020] In the diagram: 1. Workbench; 2. Positioning device; 21. Fixing block; 22. Displacement track; 23. Displacement bracket; 24. Displacement cylinder; 25. No. 1 rotating bearing; 26. No. 1 center; 27. Positioning center assembly; 271. Fixture; 272. Positioning track; 273. Positioning cylinder; 274. Positioning bracket; 275. No. 2 rotating bearing; 276. No. 2 center; 3. Connecting fixture; 4. Shaping device; 41. Support base plate; 411. Vibration motor; 42. Shaping bracket; 43. Fixing bushing; 44. Fixing bearing; 45. Shaping roller; 46. Driven assembly Components: 461. No. 1 hinge sleeve; 462. No. 1 bracket; 463. Connecting rod; 464. Connecting plate; 4641. Vibrator; 465. No. 1 driven roller; 466. No. 2 bracket; 4661. Cylinder frame; 467. No. 2 hinge sleeve; 468. Rotating bracket; 469. No. 2 driven roller; 5. Power assembly; 51. Power frame; 52. Motor bracket; 53. Power motor; 54. Universal joint; 55. Power shaft; 6. Adjustment assembly; 61. Hinge bracket; 62. Hinge block; 63. Adjusting cylinder; 7. Buffer spring; 8. Push-pull cylinder; 9. Torque sensor. Detailed Implementation

[0021] like Figures 1 to 10As shown, a high-precision shaping mechanism for flexible packaging based on multi-roller linkage includes a worktable 1, a positioning device 2, a connecting fixture 3, a shaping device 4, a power component 5, and an adjustment component 6. The positioning device 2 is fixedly installed on both sides of the worktable 1, and the positioning device 2 is used to limit the connecting fixture 3. The connecting fixture 3 is rotatably mounted on the positioning device 2, and the connecting fixture 3 is used to limit the medicine package to be shaped within the shaping device 4. The connecting fixture 3 is a rigid mandrel that penetrates the center of the medicine package, and the two ends of the mandrel are respectively provided with conical grooves that are adapted to the first tip 26 and the second tip 276. During operation, the medicine bag is fitted onto the outside of the mandrel. The positioning device 2, with its two ends pointed against the tapered grooves at both ends of the mandrel, achieves axial positioning and rotational following of the medicine bag. The shaping device 4 is fixedly installed on the worktable 1. The shaping device 4 is used to automatically shape the medicine bag through multi-roller linkage. The power assembly 5 is fixedly installed on one side of the shaping device 4. The power assembly 5 is used to provide power to the shaping device 4. The adjusting assembly 6 is fixedly installed on the outside of the shaping device 4. The adjusting device is used to adjust the cylinder 63 to make the shaping device 4 contact the medicine bag, thereby cooperating with the shaping device 4 to complete the shaping of the medicine bag. By synchronously extending and retracting the displacement cylinder 24 and the positioning cylinder 273, the displacement bracket 23 and the positioning bracket 274 are driven to move laterally with high precision along a linear track. This allows for automated centering and clamping of both ends of the medicine pack to be shaped via the direct-push structure of the first tip 26 and the second tip 276, avoiding the eccentricity error, low efficiency, and safety risks associated with manual clamping caused by traditional manual clamping. Simultaneously, the positioning tip assembly 27 adopts an axially decoupled layout with rotating bearings connected in series with the tips, forming stable and extremely low-resistance rotational fulcrums at both ends of the medicine pack, ensuring the flexible medicine pack is subjected to... Even under multi-faceted extrusion, it can maintain smooth and stable rotation, improving the consistency of circumferential force. Combined with the lifting limit device specially designed on the worktable 1 and the quick locking and release mechanism of the cylinders at both ends, it eliminates the high labor intensity of manual alignment on the one hand, and achieves a composite positioning of stable support and precise pushing in the original position of the loading and unloading station on the other hand. It can quickly and safely switch the processing state without complicated manual calibration, which significantly improves the continuity of the production line cycle and the physical reliability of the overall transmission process, meeting the stringent requirements of high-cycle energetic material production for automated loading and unloading and positioning accuracy.

[0022] like Figures 1 to 5As shown, the positioning device 2 includes a fixing block 21, a displacement track 22, a displacement bracket 23, a displacement cylinder 24, a first rotating bearing 25, a first tip 26, and a positioning tip assembly 27. The fixing block 21 is fixedly installed on the worktable 1 and is used to fix the displacement cylinder 24. The displacement track 22 is fixedly installed on both sides of the fixing block 21 and is used to allow the displacement bracket 23 to slide, thereby locking or unlocking the connecting fixture 3. The displacement bracket 23 is slidably installed on the displacement track 22, and the first rotating bearing 25 is installed on the first bracket. The output end of the displacement cylinder 24 is fixedly installed on the displacement bracket 23. The displacement cylinder 24 is fixedly installed on the fixing block 21. The first rotating bearing 25 is fixedly installed inside the displacement track 22. The first tip 26 for fixing the medicine pack is fixedly installed on the rotating part at the center of the first rotating bearing 25. The positioning tip assembly 27 is fixedly installed on the other side of the worktable 1. During operation, the worker inserts the medicine package to be shaped into the connecting fixture 3 and places it in the corresponding position on the workbench 1. At this time, the displacement cylinder 24 is activated and extends and retracts. The extending and retracting displacement cylinder 24 drives the displacement bracket 23 to slide on the displacement rails 22 on both sides of the fixed block 21. The sliding displacement bracket 23 drives the first rotating bearing 25 and the first tip 26 on it to move synchronously. The moving first tip 26 cooperates with the positioning tip assembly 27 on the other side of the workbench 1 to lock or unlock the connecting fixture 3. In the locked state, the first rotating bearing 25 can ensure that the connecting fixture 3 and the medicine package rotate smoothly to cooperate with subsequent processing. It should be noted that the workbench 1 is also equipped with a limit device for raising and lowering the connecting fixture 3, which can facilitate the worker to disassemble and install the medicine package. The lifting and limiting device includes lifting cylinders symmetrically installed at both ends of the workbench 1, with V-shaped blocks fixedly installed on the top of the piston rods of the lifting cylinders. When disassembling and installing the medicine pack, the lifting cylinders extend, using the V-shaped blocks to smoothly lift the connecting fixture 3 and the medicine pack to a designated height for easy operation by the staff; during processing, the lifting cylinders retract, and the V-shaped blocks descend to avoid interference with the rotation of the connecting fixture 3.

[0023] The displacement cylinder 24 drives the displacement bracket 23 to slide along the guide rail, realizing the automated and precise locking and rapid unlocking of the top component on the connecting tooling 3 and the medicine bag. This not only greatly improves the efficiency and reliability of clamping and positioning, but also greatly reduces the operating friction of the built-in No. 1 rotating bearing 25, ensuring that the medicine bag can rotate smoothly and continuously in the subsequent shaping process, thereby ensuring the physical feasibility and processing accuracy of the overall operation of the shaping mechanism. In addition, the lifting limit device specially set on the worktable 1 effectively standardizes the operating stroke, making the loading, unloading and disassembly of medicine bags more convenient and labor-saving, significantly optimizing the operation process and reducing the intensity of manual operation.

[0024] like Figures 1 to 5 As shown, the positioning tip assembly 27 includes a fixed frame 271, a positioning rail 272, a positioning cylinder 273, a positioning bracket 274, a second rotating bearing 275, and a second tip 276. The fixed frame 271 is fixedly installed on the side of the worktable 1 away from the fixed block 21. The positioning rail 272 is fixedly installed on the fixed frame 271. The positioning bracket 274 is slidably installed on the positioning rail 272. The positioning cylinder 273 is fixed on the fixed frame 271, and the output end of the positioning cylinder 273 is fixedly connected to the positioning bracket 274. The second rotating bearing 275 is fixedly installed on the positioning bracket 274, and the second tip 276 is fixedly installed on the second rotating bearing 275. During operation, the staff inserts the medicine package to be shaped into the connecting fixture 3 and places it in the corresponding position on the workbench 1. At this time, the positioning cylinder 273 is activated and extends and retracts. The extending and retracting positioning cylinder 273 drives the positioning bracket 274 to slide along the positioning track 272 on the fixed frame 271. The sliding positioning bracket 274 drives the second rotating bearing 275 on it to move synchronously. The moving second rotating bearing 275 drives the second tip 276 to move. The moving second tip 276 presses against one end of the connecting fixture 3, thereby cooperating with the first tip 26 on the other side to complete the clamping and positioning of the medicine package. The positioning tip assembly 27 provides automated driving force through the positioning cylinder 273, which, together with the positioning rail 272, provides precise linear guidance to the positioning bracket 274, enabling the second tip 276 to quickly and smoothly clamp and reliably hold the connecting tool 3 or the medicine bag. At the same time, the introduction of the second rotating bearing 275 effectively decouples the axial clamping force and the circumferential rotational resistance, ensuring that the medicine bag can still rotate smoothly and stably even when both ends are firmly limited. This coherent and reliable action logic not only fully guarantees the physical feasibility of the entire clamping and rotational transmission process, but also provides a stable rotational foundation for the subsequent high-precision automated shaping of the medicine bag, significantly reducing the labor intensity of manual alignment and clamping.

[0025] like Figures 6 to 8 As shown, the shaping device 4 includes a supporting base plate 41, a shaping bracket 42, a fixed bushing 43, a fixed bearing 44, a shaping roller shaft 45, and a driven assembly 46. The supporting base plate 41 is fixedly installed on the worktable 1, and the shaping bracket 42 is symmetrically installed on the worktable 1. Fixed bushings 43 are symmetrically fixedly installed on both the supporting base plate 41 and the shaping bracket 42. Fixed bearings 44 are installed on the fixed bushings 43, and the shaping roller shaft 45 is rotatably installed on the fixed bearings 44. The driven assembly 46 is rotatably installed above the shaping roller shaft 45. During operation, the staff positions the medicine package to be shaped in the shaping device 4 by connecting the tooling 3. At this time, the external power component 5 drives the shaping roller shaft 45 to rotate. The rotating shaping roller shaft 45 rotates smoothly under the support of the fixed bushing 43 and fixed bearing 44 on the support base plate 41 and the shaping bracket 42. The rotating shaping roller shaft 45 works synchronously with the driven component 46 installed above. The rotating shaping roller shaft 45 and the driven component 46 work together through multi-roller linkage to complete the kneading and automatic shaping of the medicine package. By employing a symmetrically arranged shaping bracket 42 and supporting base plate 41, combined with the precise positioning and support of fixed bushing 43 and fixed bearing 44, a balanced and low-friction underlying foundation is constructed for the shaping roller shaft 45, effectively ensuring the stability and reliability of the rotation process. At the same time, the device cleverly utilizes the multi-roller linkage between the actively running shaping roller shaft 45 and the upper driven component 46 to transform the single rotational power into a continuous, uniform, all-round kneading action on the medicine package. This automated shaping mechanism not only completely replaces the traditional high-intensity manual kneading operation and greatly improves the production cycle, but also effectively ensures the high precision and dimensional consistency of the outer circle shaping of the flexible packaging through multi-faceted synchronous extrusion.

[0026] like Figures 1 to 8 As shown, the driven assembly 46 includes a first hinge sleeve 461, a first bracket 462, a connecting rod 463, a connecting plate 464, a first driven roller 465, a second bracket 466, a second hinge sleeve 467, a rotating bracket 468, and a second driven roller 469. The first hinge sleeve 461 is fixedly installed on the worktable 1. The first bracket 462 is rotatably installed on the first hinge sleeve 461. The connecting rod 463 is slidably installed on the first bracket 462. The connecting rod 463 is fixedly mounted on the connecting rod 463. A connecting plate 464 is provided, on which a first driven roller 465 is rotatably mounted; a second bracket 466 is fixedly mounted on the worktable 1, and a second hinge sleeve 467 is fixedly mounted on the top of the second bracket 466. A rotating bracket 468 is rotatably mounted on the second hinge sleeve 467, and a connecting rod 463 is slidably mounted on the rotating bracket 468. A connecting plate 464 is fixedly mounted on the connecting rod 463, and a second driven roller 469 is rotatably mounted on the connecting plate 464. During operation, the operator drives the first support 462 and the rotating support 468 to rotate around the first hinge sleeve 461 and the second hinge sleeve 467 respectively. The rotating first support 462 and the rotating support 468 drive the connecting rod 463 on them to slide. The sliding connecting rod 463 drives the connecting plate 464 to move. The moving connecting plate 464 drives the first driven roller 465 and the second driven roller 469 to press against the medicine bag. At this time, the rotating medicine bag below drives the first driven roller 465 and the second driven roller 469 to rotate. The rotating first driven roller 465 and the second driven roller 469 work together with the shaping roller shaft 45 below to complete the shaping of the medicine bag. By utilizing the rotational motion of the first support 462 and the rotating support 468 around their respective hinged sleeves, combined with the sliding guidance function of the connecting rod 463, a flexible feeding motion logic with high adaptability and clear physical execution feasibility is constructed. This structure not only enables the first and second driven rollers 469 to accurately adjust their spatial posture and smoothly fit according to the real-time size of the medicine package, but also effectively eliminates relative sliding friction to avoid tearing the flexible packaging by utilizing a multi-point linkage mechanism that actively rotates the bottom medicine package to drive the passive operation of the upper driven roller. This adaptive closed-loop kneading space greatly enhances the transmission stability and reliability of the system in actual physical operation, thereby effectively ensuring the high precision and quality consistency of the flexible medicine package outer circle shaping.

[0027] like Figures 7 to 9 As shown, a vibration motor 411 for vibration is fixedly installed at the bottom of the support base plate 41, and the vibration motor 411 is installed on the workbench 1; A vibrator 4641 is fixedly installed on the connecting plate 464, and a buffer spring 7 is fixedly installed between the connecting rod 463, the first bracket 462, and the rotating bracket 468. By adding a vibration motor 411 and a vibrator 4641 to the bottom and upper connecting plate 464 of the support base plate 41 respectively, a multi-directional high-frequency oscillation environment with upper and lower coordination is constructed. This allows the granular or powdered materials inside the medicine bag to flow faster, distribute evenly, and become fully compacted during the multi-roller kneading process, effectively avoiding internal gaps or local looseness, and significantly improving the outer circle forming quality and internal compactness of the medicine bag. At the same time, the ingenious setting of the buffer spring 7 between the connecting rod 463 and the bracket not only plays an excellent shock absorption and buffering role during severe vibration and continuous extrusion, greatly ensuring the safety of the high-risk processing process, but also provides an adaptive flexible clamping force for the driven roller, enabling it to dynamically adjust the fitting posture according to the slight changes in the diameter of the medicine bag, thereby further ensuring the dimensional consistency of high-precision shaping and the long-term operational stability of the equipment.

[0028] like Figure 8As shown, a push-pull cylinder 8 is hinged between the workbench 1 and the first support 462, and a cylinder frame 4661 is fixedly installed on the second support 466. The push-pull cylinder 8 is hinged between the cylinder frame 4661 and the rotating support 468. By introducing a hinged push-pull cylinder 8 at the drive node between the first support 462 and the rotating support 468, a stable and controllable automated power source is provided for the opening, closing, and fitting actions of the upper driven component 46. The hinged connection design effectively adapts to the angle changes of the support during swinging, avoiding rigid jamming during operation and ensuring the smoothness of mechanical transmission and the service life of the equipment. Simultaneously, thanks to the adjustable output force of the pneumatic push-pull cylinder 8, the system can apply precise and dynamically varying downward kneading force to the medicine pack according to actual working conditions. This not only achieves automated clamping and smooth release of the flexible medicine pack by the upper driven roller, significantly reducing the labor intensity of operators, but also further ensures the uniformity of multi-roller extrusion force during the shaping process, providing reliable dynamic support for achieving high-precision and highly consistent outer circle shaping results.

[0029] like Figure 10 As shown, the power assembly 5 includes a power frame 51, a motor bracket 52, a power motor 53, a universal joint 54, and a power shaft 55. The power frame 51 is fixedly installed on one side of the workbench 1. The motor bracket 52 is fixedly installed on the power frame 51. The power motor 53 is fixedly installed on the motor bracket 52. The universal joint 54 is installed at the output end of the power motor 53. The power shaft 55 is installed at the other end of the universal joint 54. The power shaft 55 is fixedly connected to the shaping roller shaft 45. During operation, the power motor 53 starts and drives the universal joint 54 at its output end to rotate. The rotating universal joint 54 drives the power shaft 55 at the other end to rotate. The rotating power shaft 55 drives the shaping roller shaft 45 fixedly connected to it to rotate. The rotating shaping roller shaft 45 thus provides continuous rotational power for the entire shaping device 4. By cleverly introducing a universal joint 54 between the output end of the power motor 53 and the power shaft 55 for transmission connection, the possible assembly errors or coaxiality deviations between the motor spindle and the shaping roller shaft 45 are effectively compensated, avoiding the mechanical jamming, abnormal wear and vibration impact problems that are easily caused by traditional rigid direct connection. This reliable flexible transmission structure not only greatly improves the stability and service life of the equipment in long-term operation, but also fundamentally establishes the authenticity of the operating logic and the physical feasibility of the entire power transmission link under complex linkage conditions, thus providing a continuous and extremely stable power support for the high-precision automated kneading of the shaping device 4.

[0030] like Figures 1 to 7As shown, the adjustment assembly 6 includes a hinge bracket 61, a hinge block 62, and an adjustment cylinder 63. The hinge bracket 61 is fixedly installed between the workbench 1 and the shaping bracket 42. The hinge block 62 is fixedly installed on the workbench 1. An adjustment cylinder 63 is fixedly installed between the hinge block 62 and the shaping bracket 42. During operation, the adjusting cylinder 63 starts and extends and retracts. The extending and retracting adjusting cylinder 63 drives the shaping bracket 42 to rotate around the hinge bracket 61. The rotating shaping bracket 42 drives the shaping device 4 on it to move as a whole. The moving shaping device 4 contacts and presses the medicine pack to be shaped, thereby working with the driven component 46 to complete the high-precision shaping of the medicine pack. By adopting a combination design of hinged bracket 61 and hinged block 62, a physically feasible and structurally stable swing fulcrum is constructed for the shaping bracket 42, effectively avoiding the mechanical jamming or abnormal wear that is prone to occur in traditional rigid translation mechanisms under such continuous extrusion conditions, fundamentally establishing the authenticity and reliability of the overall opening and closing action logic; at the same time, with the help of the extension and retraction drive of the adjusting cylinder 63, not only can the efficient and automated advance, retreat and clamping of the shaping device 4 be realized, but the system can also flexibly adjust the extrusion contact force on the medicine bag by utilizing the unique compliance of pneumatics, thereby adapting to the enveloping requirements of medicine bags with different diameters, and effectively ensuring the high precision, dimensional consistency and long-term stable operation of the multi-roller linkage shaping process.

[0031] like Figure 10 As shown, a temperature sensor and an electrostatic sensor are fixedly mounted on the surface of the shaping roller 45; a torque sensor 9 is mounted on the output shaft of the power motor 53, and the torque sensor 9 is fixedly mounted on the motor bracket 52; in terms of physical and electrical connections, the temperature sensor, electrostatic sensor, and torque sensor 9 are all electrically connected to an independently set electrical control cabinet via wires. The control cabinet integrates a conventional PLC programmable logic controller, and the output of the controller is electrically connected to the electromagnetic proportional valves that drive the action of each cylinder. The physical signals collected by the sensors are directly transmitted to the control cabinet in the form of electrical signals, and then, by adjusting the opening of the corresponding electromagnetic proportional valves, hardware adaptive adjustment of cylinder air pressure and extrusion contact force is achieved at the purely physical execution level.

[0032] By integrating temperature and electrostatic sensors on the surface of the shaping roller 45 and adding a torque sensor 9 at the output of the power motor 53, a truly feasible multi-dimensional closed-loop monitoring and safety protection mechanism is constructed at the physical execution level. Because flexible medicine packages (especially those containing energetic materials) are prone to frictional heat and charge accumulation under the high-frequency kneading of multiple rollers, the temperature and electrostatic sensors, closely attached to the working surface, can capture the most direct physical state changes in real time, eliminating the risk of combustion and explosion at the source. Simultaneously, the torque sensor 9 accurately captures the real-time fluctuations in the motor's output resistance, using it as a true feedback basis for judging the physical interference between the rollers and the medicine package (i.e., friction and the degree of compression). This multi-parameter physical collaborative monitoring not only clearly improves the adaptive adjustment logic of the equipment under abnormal stress conditions (such as timely reduction of cylinder pressure when encountering excessive resistance), avoiding the risk of mechanical jamming or flexible packaging breakage caused by blindly applying pressure, but also fundamentally demonstrates the practical feasibility and absolute safety of this automated shaping system in high-risk operating environments.

[0033] The overall working process is as follows: The worker inserts the medicine bag to be shaped into the connecting fixture 3 and places it in the corresponding position on the workbench 1; at this time, the displacement cylinder 24 and the positioning cylinder 273 start and extend synchronously. The extending cylinders drive the displacement bracket 23 and the positioning bracket 274 to slide along the corresponding tracks. The sliding brackets drive the rotating bearings on them and the first tip 26 and the second tip 276 to move synchronously towards each other. The moving tips press against both ends of the connecting fixture 3, realizing automatic clamping and precise locking of the connecting fixture 3 and the medicine bag. Positioning is completed; subsequently, the adjusting cylinder 63 starts and extends, driving the shaping bracket 42 to rotate around the hinged bracket 61, causing the shaping device 4 on it to move as a whole and initially contact the medicine bag to be shaped. At the same time, the hinged push-pull cylinder 8 starts, driving the first bracket 462 and the rotating bracket 468 to rotate around their respective hinged sleeves. The rotating bracket drives the first driven roller 465 and the second driven roller 469 above to move downward and flexibly press against the medicine bag through the sliding connecting rod 463 and the connecting plate 464. Then, the power motor 53 starts, and its The output end drives the power shaft 55 to rotate via the universal joint 54. The rotating power shaft 55 drives the lower shaping roller shaft 45 to rotate smoothly. The rotating shaping roller shaft 45 drives the medicine bag and connecting fixture 3 to rotate smoothly. The rotating medicine bag then drives the first driven roller 465 and the second driven roller 469 pressed above to rotate passively. During this rotation, the vibration motor 411 at the bottom of the supporting base plate 41 and the vibrator 4641 on the connecting plate 464 work synchronously to generate multi-directional high-frequency oscillation, combined with the adaptive function of the buffer spring 7. The pressing force, through the coordinated operation of multiple rollers, continuously and evenly kneads the medicine pack in all directions. During the entire kneading and shaping process, the temperature sensor, electrostatic sensor on the surface of the shaping roller shaft 45 and the torque sensor 9 at the end of the power motor 53 monitor the multi-dimensional physical state and force in real time. The system adjusts the squeezing contact force of the cylinder 63 in real time based on the feedback to ensure safety and accuracy. After the shaping time is reached, the motor stops, and each cylinder moves in the opposite direction to return to its original position. The staff then removes the high-precision shaped medicine pack, completing the entire shaping process.

[0034] Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision shaping mechanism for flexible packaging based on multi-roller linkage, characterized in that, The device includes a workbench (1), a positioning device (2), a connecting fixture (3), a shaping device (4), a power assembly (5), and an adjustment assembly (6). The positioning device (2) is fixedly installed on both sides of the workbench (1). The positioning device (2) is used to limit the connecting fixture (3). The connecting fixture (3) is rotatably installed on the positioning device (2). The connecting fixture (3) is used to limit the medicine package to be shaped within the shaping device (4). The shaping device (4) is fixedly installed on the workbench (1). The shaping device (4) is used to automatically shape the medicine package through multi-roller linkage. The power assembly (5) is fixedly installed on one side of the shaping device (4). The power assembly (5) is used to provide power to the shaping device (4). The adjustment assembly (6) is fixedly installed on the outside of the shaping device (4). The adjustment assembly is used to adjust the cylinder (63) to make the shaping device (4) contact the medicine package and thus cooperate with the shaping device (4) to complete the shaping of the medicine package.

2. The flexible packaging high-precision shaping mechanism based on multi-roller linkage according to claim 1, characterized in that: The positioning device (2) includes a fixed block (21), a displacement track (22), a displacement bracket (23), a displacement cylinder (24), a first rotating bearing (25), a first tip (26), and a positioning tip assembly (27). The fixed block (21) is fixedly installed on the workbench (1). The displacement track (22) is fixedly installed on both sides of the fixed block (21). The displacement bracket (23) is slidably installed on the displacement track (22). The output end of the displacement cylinder (24) is fixedly installed on the displacement bracket (23). The displacement cylinder (24) is fixedly installed on the fixed block (21). The first rotating bearing (25) is fixedly installed inside the displacement track (22). The first tip (26) for fixing with the medicine pack is fixedly installed on the rotating part at the center of the first rotating bearing (25). The positioning tip assembly (27) is fixedly installed on the other side of the workbench (1).

3. The flexible packaging high-precision shaping mechanism based on multi-roller linkage according to claim 2, characterized in that: The positioning tip assembly (27) includes a fixed frame (271), a positioning rail (272), a positioning cylinder (273), a positioning bracket (274), a second rotating bearing (275), and a second tip (276). The fixed frame (271) is fixedly installed on the side of the worktable (1) away from the fixed block (21). The positioning rail (272) is fixedly installed on the fixed frame (271). The positioning bracket (274) is slidably installed on the positioning rail (272). The positioning cylinder (273) is fixed on the fixed frame (271), and the output end of the positioning cylinder (273) is fixedly connected to the positioning bracket (274). The second rotating bearing (275) is fixedly installed on the positioning bracket (274), and the second tip (276) is fixedly installed on the second rotating bearing (275).

4. The flexible packaging high-precision shaping mechanism based on multi-roller linkage according to claim 3, characterized in that: The shaping device (4) includes a support base plate (41), a shaping bracket (42), a fixed bushing (43), a fixed bearing (44), a shaping roller (45), and a driven component (46). The support base plate (41) is fixedly installed on the worktable (1). The shaping bracket (42) is symmetrically installed on the worktable (1). Fixed bushings (43) are symmetrically fixedly installed on both the support base plate (41) and the shaping bracket (42). Fixed bearings (44) are installed on the fixed bushings (43). The shaping roller (45) is rotatably installed on the fixed bearings (44). The driven component (46) is rotatably installed above the shaping roller (45).

5. The flexible packaging high-precision shaping mechanism based on multi-roller linkage according to claim 4, characterized in that: The driven assembly (46) includes a first hinge sleeve (461), a first bracket (462), a connecting rod (463), a connecting plate (464), a first driven roller (465), a second bracket (466), a second hinge sleeve (467), a rotating bracket (468), and a second driven roller (469). The first hinge sleeve (461) is fixedly installed on the workbench (1). The first bracket (462) is rotatably installed on the first hinge sleeve (461). The connecting rod (463) is slidably installed on the first bracket (462). The connecting rod (463) is fixedly mounted on the connecting rod (463). A connecting plate (464) is provided, on which a first driven roller (465) is rotatably mounted; a second bracket (466) is fixedly mounted on the workbench (1), and a second hinge sleeve (467) is fixedly mounted on the top of the second bracket (466). A rotating bracket (468) is rotatably mounted on the second hinge sleeve (467), and a connecting rod (463) is slidably mounted on the rotating bracket (468). A connecting plate (464) is fixedly mounted on the connecting rod (463), and a second driven roller (469) is rotatably mounted on the connecting plate (464).

6. The flexible packaging high-precision shaping mechanism based on multi-roller linkage according to claim 3, characterized in that: A vibration motor for vibration is fixedly installed at the bottom of the support base plate (41), and the vibration motor is installed on the workbench (1); A vibrator (4641) is fixedly installed on the connecting plate (464), and a buffer spring (7) is fixedly installed between the connecting rod (463) and the first bracket (462) and the rotating bracket (468).

7. A high-precision shaping mechanism for flexible packaging based on multi-roller linkage according to claim 6, characterized in that: A push-pull cylinder (8) is hinged between the workbench (1) and the first support (462). A cylinder frame (4661) is fixedly installed on the second support (466). A push-pull cylinder (8) is hinged between the cylinder frame (4661) and the rotating support (468).

8. The flexible packaging high-precision shaping mechanism based on multi-roller linkage according to claim 7, characterized in that: The power assembly (5) includes a power frame (51), a motor bracket (52), a power motor (53), a universal joint (54), and a power shaft (55). The power frame (51) is fixedly installed on one side of the workbench (1). The motor bracket (52) is fixedly installed on the power frame (51). The power motor (53) is fixedly installed on the motor bracket (52). The output end of the power motor (53) is equipped with a universal joint (54). The other end of the universal joint (54) is equipped with a power shaft (55). The power shaft (55) is fixedly connected to the shaping roller shaft (45).

9. A high-precision shaping mechanism for flexible packaging based on multi-roller linkage according to claim 8, characterized in that: The adjustment assembly (6) includes a hinge bracket (61), a hinge block (62), and an adjustment cylinder (63). The hinge bracket (61) is fixedly installed between the workbench (1) and the shaping bracket (42). The hinge block (62) is fixedly installed on the workbench (1). An adjustment cylinder (63) is fixedly installed between the hinge block (62) and the shaping bracket (42).

10. A high-precision shaping mechanism for flexible packaging based on multi-roller linkage according to claim 9, characterized in that: A torque sensor (9) is installed on the output shaft of the power motor (53), and the torque sensor (9) is fixedly installed on the motor bracket (52).

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