Medicinal aluminum foil printing coating machine

Abstract

The medicinal aluminum foil printing coating machine comprises an upper support, a bottom plate is arranged on one side of the bottom of the upper support, and an unwinding mechanism and a winding mechanism are arranged on the two sides of the top of the bottom plate correspondingly; the unwinding mechanism and the winding mechanism are each internally provided with a self-butt-joint mechanism used for feeding and discharging and a buffering mechanism used for buffering the tensioning pressure, the whole aluminum foil is fixed in the equipment through the self-butt-joint mechanisms, then the clamping motor rotates reversely to relieve transmission fixing, and discharging can be completed in cooperation with the sliding lifting mechanism; according to the aluminum foil feeding and discharging device, feeding and discharging operation of full-roll aluminum foil can be automatically completed, meanwhile, shaft alignment assembly is not needed, and the production efficiency of the device is improved; when the tension is too large, the buffer air cylinder drives the transmission block to move outwards in the direction of a vortex line to convert linear tension into angular displacement compensation, nonlinear pressure relief response when the tension exceeds the limit is achieved, and tearing caused by too large tension of the aluminum foil is avoided.

Description

Technical Field

[0001] This invention relates to the field of medical product processing, and in particular to a pharmaceutical aluminum foil printing and coating machine. Background Art

[0002] Medical aluminum foil is a high-performance aluminum foil material specifically designed for pharmaceutical packaging. It has strict hygiene, barrier, and safety requirements. It is composed of pure aluminum or aluminum alloy as the basic structure, and the surface can be coated with pharmaceutical polymers such as PVDC or acrylic acid. It is mainly used for pharmaceutical blister packaging, injection bottle cap sealing, sterile medical device packaging, and light-proof sealing of special drugs. The production process of pharmaceutical aluminum foil requires the use of a printing and coating machine to coat and print medical materials. Existing coating equipment arranges coating and printing on both sides of the equipment, with a drying mechanism in the middle as the top beam of the entire structure. During the processing, the printing and coating processes are dried and printed, and finally the equipment is rolled up and collected. This equipment structure, with its overall vertical distribution, can significantly reduce the space occupied by the equipment and integrate the entire coating and printing process. Existing pharmaceutical aluminum foil printing and coating equipment can basically meet daily usage needs. To ensure the tension of the aluminum foil, the pressure arm structure on the winding mechanism can provide a certain tension force. However, when the tension force is too large, the unidirectional pressure structure of the pressure arm mechanism cannot relieve the excess tension force, which can easily lead to tearing of the wound aluminum foil. At the same time, the loading and unloading rollers need to be clamped between the rotating shafts, but the entire part lacks an upper and lower support structure. The weight of a fully rolled aluminum foil is too large, requiring a hoisting structure for loading and unloading operations. At the same time, alignment operations are needed to ensure precise docking with the transmission parts. The loading and unloading process is cumbersome and affects the production efficiency of the equipment. Therefore, it is necessary to design a pharmaceutical aluminum foil printing and coating machine. Summary of the Invention

[0003] To solve the above-mentioned technical problems, this application provides a pharmaceutical aluminum foil printing and coating machine, including an upper support, a base plate on one side of the bottom of the upper support, and an unwinding mechanism and a winding mechanism on the top two sides of the base plate, respectively. The unwinding mechanism and the winding mechanism are each provided with a self-connecting mechanism for loading and unloading materials and a buffering mechanism for buffering tension pressure.

[0004] In some embodiments, the self-connecting mechanism includes a holding platform supporting an aluminum foil roll, the top of which has an arcuate structure that contacts the aluminum foil roll, and the bottom of which is fixed between sliding lifting mechanisms.

[0005] In some embodiments, the sliding lifting mechanism includes a support frame fixed to both sides of the serving platform, wherein a sliding cylinder for moving the aluminum foil roll is provided in the support frame, the sliding cylinder is symmetrically installed on both sides of the mounting frame, and the mounting frame is fixed to a hydraulic cylinder for adjusting the height of the aluminum foil roll.

[0006] In some embodiments, the support frame is provided with a bottom guide rod for guidance, and the bottom guide rod is connected to the bottom of the hydraulic cylinder by a linear bearing.

[0007] In some embodiments, a support block is provided on the top of the hydraulic cylinder. The support block has an arc-shaped structure and is sleeved in a fixed bushing. The fixed bushing is fixedly sleeved on both ends of the support shaft.

[0008] In some embodiments, a mating platform is fixedly connected to the fixed bushing by bolts. A mating groove is provided on the mating platform, and a mating block corresponding to the shape of the mating groove is fitted in the mating groove. The mating block is fixed on the mounting base, and a tapered column is provided at the center of the mounting base to fit into the tapered hole opened at the center of the mating platform.

[0009] In some embodiments, the mounting base is rotatably connected to the clamping mechanism, the clamping mechanism including a first support for rotatably supporting the mounting base, the first support being slidably connected to a second support, an adjusting cylinder for adjusting the distance between the first support and the second support being embedded in the first support, the output end of the adjusting cylinder being fixed to the second support, the second support being slidably connected to a side support plate, a double-ended screw being rotatably connected to the side support plate, the double-ended screw being connected to the output end of a clamping motor via a worm gear, and the clamping motor being fixed to the side support plate.

[0010] In some embodiments, the buffer mechanism includes a buffer platform fixed on a mounting base, the buffer platform having uniformly spaced vortex-shaped buffer slots, a transmission block corresponding to the vortex-shaped slot structure slidably connected in the buffer slots, the arc direction of the transmission block being consistent with the working rotation direction of the mounting base, and a pressure strain gauge being provided at the connection between the transmission block and the buffer platform.

[0011] In some embodiments, a cylindrical protrusion at one end of the transmission block is rotatably connected to the output end of the buffer cylinder, the buffer cylinder is rotatably connected to the cylinder seat, and a dovetail protrusion at the bottom of the cylinder seat is slidably connected to the dovetail groove on the transmission ring.

[0012] In some embodiments, a drying mechanism for drying is embedded in the upper support, and a coating mechanism and a printing mechanism are respectively provided on both sides of the bottom of the upper support. There are two sets of coating mechanisms, and the printing mechanism is fixed on the base plate. There are three sets of printing mechanisms for independently printing red, yellow and blue pigments, and the three sets of printing mechanisms are located between the unwinding mechanism and the rewinding mechanism.

[0013] In summary, the present invention has at least the following beneficial effects: 1. This invention uses a loading platform to support a full roll of aluminum foil. A hydraulic cylinder drives a support block to move upward, lifting the aluminum foil on the fixed bushing and support shaft. Then, with the limit of the bottom guide rod, a sliding cylinder drives the aluminum foil to move towards the central axis of the clamping mechanism. Next, the clamping motor drives a double-headed screw to rotate through a worm gear, thereby driving the first and second supports on both sides to move closer to each other. After the docking groove and docking block are spliced ​​together, the entire aluminum foil is fixed in the equipment to complete the loading. Afterward, the clamping motor reverses to release the transmission fixation, and with the sliding lifting mechanism, the unloading process can be completed. The unloading and loading of full rolls of aluminum foil can be completed automatically without the need for hoisting equipment. At the same time, no manual shaft assembly is required, which improves the production efficiency of the equipment.

[0014] 2. In this invention, a buffer mechanism is used to connect the receiving and unwinding power unit and the self-connecting mechanism of the supporting shaft. The torsional force generated by the power unit is transmitted to the mounting base through the buffer mechanism. The interaction between the docking groove and the docking block drives the aluminum foil on the supporting shaft to rotate. If the aluminum foil tension is too low, the pressure arm mechanism applies pressure. During the transmission process, the transmission resistance is collected by the pressure strain gauge. If the tension is too high, the buffer cylinder on the transmission ring drives the transmission block in the buffer groove to move outward along the direction of the vortex. During the outward movement, the rotation angle of the transmission ring is offset by the vortex sliding part of the transmission block. Through the radial displacement of the transmission block in the vortex buffer groove, the linear tension is converted into angular displacement compensation, realizing the nonlinear pressure relief response when the tension exceeds the limit, and avoiding the aluminum foil from tearing due to excessive tension. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the self-docking mechanism and the buffer mechanism in this invention; Figure 3 This is a partial exploded view of the structure of the present invention; Figure 4 This is an assembly diagram of the buffer mechanism in this invention; Figure 5 yes Figure 4 A magnified view of a portion of region A in the middle; Figure 6 This is a partial structural schematic diagram of Embodiment 5 of the present invention; Figure 7 This is a schematic diagram of the position of the clamping electric cylinder in Embodiment 5 of the present invention.

[0016] Explanation of reference numerals in the attached figures: 1. Upper support; 2. Coating mechanism; 3. Printing mechanism; 4. Base plate; 5. Unwinding mechanism; 6. Rewinding mechanism; 7. Self-connecting mechanism; 8. Buffer mechanism; 9. Drying mechanism; 10. Support shaft; 71. Loading table; 72. Sliding lifting mechanism; 73. Connecting table; 74. Connecting groove; 75. Connecting block; 76. Mounting base; 77. Clamping mechanism; 721. Support frame; 722. Sliding cylinder; 723. Mounting frame; 724. Hydraulic system 725. Cylinder; 726. Support block; 727. Fixed bushing; 728. Bottom guide rod; 771. First support; 772. Second support; 773. Adjusting cylinder; 774. Side support plate; 775. Double-ended screw; 776. Clamping motor; 81. Buffer platform; 82. Buffer slot; 83. Transmission block; 84. Pressure strain gauge; 85. Buffer cylinder; 86. Cylinder seat; 87. Transmission ring; 101. Limiting guide rod; 102. Clamping electric cylinder. Detailed Implementation

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] Example 1: Please refer to Figures 1-5This invention provides a technical solution: a pharmaceutical aluminum foil printing and coating machine, comprising an upper support 1, a base plate 4 on one side of the bottom of the upper support 1, an unwinding mechanism 5 and a winding mechanism 6 on the top two sides of the base plate 4 respectively, both the unwinding mechanism 5 and the winding mechanism 6 being provided with a self-connecting mechanism 7 for loading and unloading materials and a buffering mechanism 8 for buffering tension pressure, a drying mechanism 9 for drying being embedded in the upper support 1, a coating mechanism 2 and a printing mechanism 3 on the bottom two sides of the upper support 1 respectively, the coating mechanism 2 having two sets, the printing mechanism 3 being fixed on the base plate 4, the printing mechanism 3 having three sets for independently printing red, yellow and blue pigments respectively, and the three sets of printing mechanisms 3 being located between the unwinding mechanism 5 and the winding mechanism 6, with a self-connecting mechanism... Structure 7 can automatically complete the loading and unloading process of full rolls of aluminum foil, avoiding manual contact with the foil. The two coating units 2 can perform two-layer coating treatments sequentially, meeting the strict standards of pharmaceutical packaging. The three printing units 3 are used to independently print red, yellow, and blue pigments respectively. Through high-precision overprinting, full-color marking can be printed. The three-color units work synchronously without repeated feeding, significantly improving production efficiency. The embedded design of the drying unit 9 uses hot air circulation or infrared radiation to quickly evaporate the solvents in the coating and ink. The entire equipment can meet the full automation of aluminum foil from unwinding to coating to printing to drying to rewinding, realizing efficient and high-quality production of pharmaceutical aluminum foil, significantly improving the safety and compliance of pharmaceutical packaging, while reducing overall costs.

[0019] Example 2: Please refer to Figures 2-5The present invention provides a technical solution: the self-connecting mechanism 7 includes a holding platform 71 supporting the aluminum foil roll. The top of the holding platform 71 is an arc structure that contacts the aluminum foil roll, and the bottom of the holding platform 71 is fixed between sliding lifting mechanisms 72. The sliding lifting mechanism 72 includes support frames 721 fixed on both sides of the holding platform 71. A sliding cylinder 722 for moving the aluminum foil roll is provided in the support frame 721. The sliding cylinder 722 is symmetrically installed on both sides of the mounting frame 723. The mounting frame 723 is fixed between the support frames 721 and the aluminum foil roll. The hydraulic cylinder 724, which adjusts the height of the aluminum foil roll, has a bottom guide rod 727 in its support frame 721 for guidance. The bottom guide rod 727 is connected to the bottom of the hydraulic cylinder 724 via a linear bearing. A support block 725, which is arc-shaped, is mounted on top of the hydraulic cylinder 724 and fits into a fixed bushing 726. The fixed bushing 726 is fixedly fitted onto both ends of the support shaft 10. A mating platform 73 is bolted to the fixed bushing 726. The receiving platform 73 has a connecting groove 74, and a corresponding connecting block 75 is fitted into the connecting groove 74. The connecting block 75 is fixed on the mounting base 76, and a tapered column at the center of the mounting base 76 fits into the tapered hole at the center of the receiving platform 73. The arc structure of the holding platform 71 conforms to the outer diameter of the aluminum foil roll, providing temporary support. The sliding cylinder 722 pushes the aluminum foil roll laterally to the connecting position. During the roll changing process, the aluminum foil roll has no rolling friction, avoiding surface scratches. The hydraulic cylinder 724 is used for... The height of the support block 725 is adjusted, and the bottom guide rod 727 and linear bearing ensure vertical movement without sway. The arc surface of the support block 725 contacts the inner wall of the aluminum foil roll core. The fixed bushing 726 provides a rotation fulcrum through the support shaft 10, ensuring that the aluminum foil roll can rotate freely during winding and unwinding without radial movement. The docking block 75 slides in along the docking groove 74. The tapered column and tapered hole cooperate to achieve axial / radial dual positioning, which can achieve rapid positioning. The tapered surface cooperation automatically corrects the initial deviation, and the repeatability positioning accuracy is high after locking. During operation, the full roll of aluminum foil is supported by the loading platform 71. The hydraulic cylinder 724 drives the support block 725 to move upward, supporting the aluminum foil on the fixed bushing 726 and the support shaft 10. Then, with the limit of the bottom guide rod 727, the sliding cylinder 722 drives the aluminum foil to move towards the central axis of the clamping mechanism 77. Next, the clamping motor 776 drives the double-headed screw 775 to rotate through the worm gear, thereby driving the first support 771 and the second support 772 on both sides to move closer to each other. After the docking groove 74 and the docking block 75 are spliced ​​together, the entire aluminum foil is fixed in the equipment to complete the loading. Afterward, the clamping motor 776 reverses to release the transmission fixation and, with the sliding lifting mechanism 72, the unloading process can be completed. The loading and unloading of the full roll of aluminum foil can be completed automatically without the need for hoisting equipment. At the same time, no manual shaft assembly is required, which improves the production efficiency of the equipment.

[0020] Example 3: Please refer to Figures 2-5The present invention provides a technical solution: a mounting base 76 is rotatably connected to a clamping mechanism 77. The clamping mechanism 77 includes a first support 771 that rotatably supports the mounting base 76. The first support 771 is slidably connected to a second support 772. An adjusting cylinder 773 for adjusting the distance between the first support 771 and the second support 772 is embedded in the first support 771. The output end of the adjusting cylinder 773 is fixed to the second support 772. The second support 772 is slidably connected to a side support plate 774. A double-ended screw 775 is rotatably connected to the side support plate 774. Rod 775 is connected to the output end of clamping motor 776 via a worm gear, and clamping motor 776 is fixed on side support plate 774; mounting base 76 is rotatably connected to first support 771 via bearing, allowing aluminum foil roll to rotate freely; adjusting cylinder 773 pushes first support 771 and second support 772 to slide relative to each other, adjusting the spacing to accommodate different core widths; clamping motor 776 drives double-headed screw 775 to move the second supports 772 on both sides synchronously, achieving axial centering of the core; second support 772 slides linearly along side support plate 774, ensuring linearity of movement.

[0021] Example 4: Please refer to Figures 2-5 The present invention provides a technical solution: the buffer mechanism 8 includes a buffer platform 81 fixed on a mounting base 76. The buffer platform 81 has evenly spaced spiral-shaped buffer slots 82. A transmission block 83 corresponding to the spiral-shaped slot structure is slidably connected in the buffer slots 82. The arc direction of the transmission block 83 is consistent with the working rotation direction of the mounting base 76. A pressure strain gauge 84 is provided at the connection between the transmission block 83 and the buffer platform 81. A cylindrical protrusion at one end of the transmission block 83 is rotatably connected to the output end of a buffer cylinder 85. The buffer cylinder 85 is rotatably connected to a cylinder seat 86. A dovetail protrusion at the bottom of the cylinder seat 86 is slidably connected to a dovetail groove on a transmission ring 87. The buffer mechanism 8 connects the power unit receiving unwinding and the self-connecting mechanism of the support shaft 10. 7. The torque generated by the power unit is transmitted to the mounting base 76 through the buffer mechanism 8. The interaction between the docking groove 74 and the docking block 75 drives the aluminum foil on the support shaft 10 to rotate. If the tension of the aluminum foil is too small, it is pressurized by the pressure arm mechanism. During the transmission process, the transmission resistance is collected by the pressure strain gauge 84. When the tension is too large, the buffer cylinder 85 on the transmission ring 87 drives the transmission block 83 in the buffer groove 82 to move outward along the direction of the vortex. During the outward movement, the rotation angle of the transmission ring 87 is canceled by the vortex sliding part of the transmission block 83. Through the radial displacement of the transmission block 83 in the vortex buffer groove 82, the linear tension is converted into angular displacement compensation, realizing the nonlinear pressure relief response when the tension exceeds the limit, and avoiding the aluminum foil from tearing due to excessive tension.

[0022] Example 5: Please refer to Figure 1 and Figures 6-7This invention provides a technical solution: a pharmaceutical aluminum foil printing and coating machine, comprising an upper support 1, a base plate 4 on one side of the bottom of the upper support 1, an unwinding mechanism 5 and a winding mechanism 6 on the top two sides of the base plate 4 respectively, both the unwinding mechanism 5 and the winding mechanism 6 being provided with a self-connecting mechanism 7 for loading and unloading materials and a buffering mechanism 8 for buffering tension pressure, a drying mechanism 9 for drying being embedded in the upper support 1, and a coating mechanism 2 and a printing mechanism 3 on the bottom two sides of the upper support 1 respectively. Based on the above structure, the double-headed screw 775 and the clamping motor 776 in the clamping mechanism 77 are replaced with a limiting guide rod 101 and a clamping electric cylinder. 102. The clamping electric cylinder 102 is symmetrically mounted on the side support plate 774. The output end of the clamping electric cylinder 102 is fixedly connected to the second support 772. The second support 772 is slidably connected to the limiting guide rod 101, and both ends of the limiting guide rod 101 are fixed to the side support plate 774. The clamping electric cylinder 102 direct drive replaces the original worm gear drive, which improves the transmission efficiency. The limiting guide rod 101 is used in conjunction with a high-precision linear bearing for axial limiting. Through the minimalist design of electric cylinder direct drive plus high-precision guidance, it surpasses the worm gear structure in terms of transmission efficiency, positioning accuracy and reliability. It is especially suitable for pharmaceutical aluminum foil production lines with strict requirements for speed and cleanliness.

[0023] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0024] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A pharmaceutical aluminum foil printing and coating machine, comprising an upper support (1), characterized in that: The bottom side of the upper support (1) is provided with a base plate (4), and the top two sides of the base plate (4) are respectively provided with an unwinding mechanism (5) and a winding mechanism (6). The unwinding mechanism (5) and the winding mechanism (6) are each provided with a self-connecting mechanism (7) for loading and unloading materials and a buffering mechanism (8) for buffering tension pressure.

2. The pharmaceutical aluminum foil printing and coating machine according to claim 1, characterized in that: The self-connecting mechanism (7) includes a holding platform (71) that supports the aluminum foil roll. The top of the holding platform (71) is an arc structure that contacts the aluminum foil roll, and the bottom of the holding platform (71) is fixed between the sliding lifting mechanism (72).

3. The pharmaceutical aluminum foil printing and coating machine according to claim 2, characterized in that: The sliding lifting mechanism (72) includes a support frame (721) fixed on both sides of the serving platform (71). The support frame (721) is provided with a sliding cylinder (722) for moving the aluminum foil roll. The sliding cylinder (722) is symmetrically installed on both sides of the mounting frame (723). The mounting frame (723) is fixed to a hydraulic cylinder (724) for adjusting the height of the aluminum foil roll.

4. The pharmaceutical aluminum foil printing and coating machine according to claim 3, characterized in that: The support frame (721) is provided with a bottom guide rod (727) for guidance, and the bottom guide rod (727) is connected to the bottom of the hydraulic cylinder (724) by means of a linear bearing.

5. A pharmaceutical aluminum foil printing and coating machine according to claim 3, characterized in that: The top of the hydraulic cylinder (724) is provided with a support block (725), the support block (725) is an arc-shaped structure, and the support block (725) is sleeved in a fixed bushing (726), the fixed bushing (726) is fixedly sleeved on both ends of the support shaft (10).

6. A pharmaceutical aluminum foil printing and coating machine according to claim 5, characterized in that: A docking platform (73) is fixedly connected to the fixed bushing (726) by bolts. A docking groove (74) is provided on the docking platform (73). A docking block (75) corresponding to the shape of the docking groove (74) is sleeved in the docking groove (74). The docking block (75) is fixed on the mounting base (76). A tapered column is provided at the center of the mounting base (76) and fits into the tapered hole opened at the center of the docking platform (73).

7. A pharmaceutical aluminum foil printing and coating machine according to claim 6, characterized in that: The mounting base (76) is rotatably connected to the clamping mechanism (77). The clamping mechanism (77) includes a first support (771) that rotatably supports the mounting base (76). The first support (771) is slidably connected to a second support (772). An adjusting cylinder (773) for adjusting the distance between the first support (771) and the second support (772) is embedded in the first support (771). The output end of the adjusting cylinder (773) is fixed on the second support (772). The second support (772) is slidably connected to a side support plate (774). A double-ended screw (775) is rotatably connected to the side support plate (774). The double-ended screw (775) is connected to the output end of the clamping motor (776) through a worm gear. The clamping motor (776) is fixed on the side support plate (774).

8. A pharmaceutical aluminum foil printing and coating machine according to claim 1, characterized in that: The buffer mechanism (8) includes a buffer platform (81) fixed on the mounting base (76). The buffer platform (81) is provided with vortex-shaped buffer slots (82) evenly distributed. A transmission block (83) with a corresponding vortex-shaped slot structure is slidably connected in the buffer slot (82). The arc direction of the transmission block (83) is consistent with the working rotation direction of the mounting base (76). A pressure strain gauge (84) is provided at the connection between the transmission block (83) and the buffer platform (81).

9. A pharmaceutical aluminum foil printing and coating machine according to claim 8, characterized in that: The cylindrical protrusion at one end of the transmission block (83) is rotatably connected to the output end of the buffer cylinder (85), the buffer cylinder (85) is rotatably connected to the cylinder seat (86), and the dovetail protrusion at the bottom of the cylinder seat (86) is slidably connected to the dovetail groove on the transmission ring (87).

10. A pharmaceutical aluminum foil printing and coating machine according to claim 1, characterized in that: The upper support (1) is embedded with a drying mechanism (9) for drying. The bottom sides of the upper support (1) are respectively provided with a coating mechanism (2) and a printing mechanism (3). The coating mechanism (2) is provided with two sets. The printing mechanism (3) is fixed on the base plate (4). The printing mechanism (3) is provided with three sets for independently printing red, yellow and blue pigments. The three sets of printing mechanisms (3) are located between the unwinding mechanism (5) and the rewinding mechanism (6).

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