Blister packaging machine

Abstract

The present invention discloses a blister packaging machine, wherein a forming film traction device, a forming film placement and stretching station, a forming device, a medicine filling station, a visual inspection device, a film coating placement and stretching station, a heat sealing device, a cutting device, and a waste material collection station are arranged on a frame, the forming film traction device comprises a first traction component and a second traction component, the traction component comprises an active traction roller and a driven traction roller connected to the active traction roller, the forming film is sandwiched between the active traction roller and the driven traction roller, one of the active traction rollers is connected to a driving component, a synchronization mechanism is arranged between the two active traction rollers, the first traction component is arranged near the forming film placement and stretching station, the second traction component is arranged near the waste material collection station, the first traction component, the forming device, the medicine filling station, the visual inspection device, the heat sealing device, the second traction component, and the cutting device are arranged in sequence. The present invention has the advantages of less space occupation, high efficiency, good stability, etc.

Description

Technical Field

[0001] The invention relates to the technical field of food and medicine packaging machinery, in particular to a blister packaging machine. Background Art

[0002] At present, there are various types of equipment in the field of pharmaceutical packaging in China. Solid preparation packaging equipment refers to equipment that can be used to package oral solid medicines of various geometric shapes, such as plain tablets, sugar-coated tablets, capsules, and dripping pills. Blister packaging machines are this type of equipment, also known as thermoplastic forming blister packaging machines. They are high-efficiency packaging machines that integrate multiple functions such as heating plastic hard sheets (molded hard aluminum does not require heating), molding, drug filling, heat sealing, typing (batch number), breaking line pressing, punching and conveying on the same machine. It can achieve aluminum-plastic and aluminum-aluminum packaging. The blister packaging machine needs to transport the formed film between different stations of the machine. There are currently several different traction methods for the transportation of the formed film: 1) Use a cylinder to clamp the formed film, and then drive the synchronous belt through a motor to transport it at a fixed distance; 2) Use a motor to drive the connecting rod mechanism for fixed-distance transportation. The structure is relatively complex, the action mechanism needs to reciprocate, it occupies a large space, the efficiency is low, the reliability is low during long-distance transportation, and it is easy to cause unstable machine operation. In addition, most of the existing blister packaging machines are arranged in a line, which is not compact enough, occupies a large space, and is not conducive to layout in the factory. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a blister packaging machine with a conveying mechanism that occupies less space, has high efficiency and good stability.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A blister packaging machine comprises a frame, on which a forming film traction device, a forming film placement and stretching station, a forming device, a medicine filling station, a visual inspection device, a film coating placement and stretching station, a heat sealing device, a cutting device, and a waste collection station are arranged. The forming film traction device comprises a first traction assembly and a second traction assembly, both of which comprise an active traction roller and a driven traction roller connected to the active traction roller, the forming film is sandwiched between the active traction roller and the driven traction roller, the active traction roller of the first traction assembly or the second traction assembly is connected to a driving component, and a synchronization mechanism is provided between the two active traction rollers; or both of the two active traction rollers are connected to a driving component, and the driving components of the two active traction rollers operate synchronously, the first traction assembly is arranged close to the forming film placement and stretching station, and the second traction assembly is arranged close to the waste collection station, the first traction assembly, the forming device, the medicine filling station, the visual inspection device, the heat sealing device, the second traction assembly and the cutting device are arranged in sequence, and the film coating placement and stretching station is located on one side of the heat sealing device.

[0006] As a further improvement of the above technical solution: the synchronization mechanism includes a first sprocket, a second sprocket, and a synchronization chain wound around the first sprocket and the second sprocket, the first sprocket and the second sprocket are respectively coaxially arranged with the two active traction rollers, the driving component is a servo motor, a driving pulley is installed on the rotating shaft of the servo motor, one of the active traction rollers is equipped with a synchronously rotating driven pulley, and a synchronous belt is wound around the driving pulley and the driven pulley.

[0007] As a further improvement of the above technical solution: the active traction roller is equipped with a synchronously rotating active gear, the driven traction roller is equipped with a synchronously rotating driven gear, and the active gear and the driven gear are meshed.

[0008] As a further improvement of the above technical solution: both ends of the rotating shaft of the driven traction roller are provided with a pressing cylinder for pressing the driven traction roller onto the active traction roller.

[0009] As a further improvement of the above technical solution: the forming device includes a punch assembly, a die located below the punch assembly and capable of reciprocating up and down, and a mounting plate located above the punch assembly, a guide assembly is passed through the mounting plate, the upper end of the guide assembly is positioned on the mounting plate, and the lower end is connected to the punch assembly, an elastic buffer assembly is sleeved on the outer periphery of the guide assembly, the upper end of the elastic buffer assembly abuts against the mounting plate, and the lower end abuts against the punch assembly.

[0010] As a further improvement of the above technical solution: a threaded hole is provided on the mounting plate and an adjusting sleeve is installed in the threaded hole, an outer wall of the adjusting sleeve is provided with an adjusting thread matching the threaded hole, the guide assembly includes a guide sleeve and a threaded connector provided in the guide sleeve, the upper end of the guide sleeve is positioned at the upper end of the adjusting sleeve, and the lower end of the threaded connector is connected to the punch assembly by a thread.

[0011] As a further improvement of the above technical solution: the punch assembly includes a punch body and a cooling plate arranged on the punch body, the lower end of the guide assembly is connected to the cooling plate, and the lower end of the elastic buffer assembly abuts against the cooling plate.

[0012] As a further improvement of the above technical solution: the guide components are provided in multiple groups and are arranged on the mounting plate at intervals, and the elastic buffer components are sleeved on the outer periphery of each group of the guide components.

[0013] As a further improvement of the above technical solution: the blister packaging machine also includes a preheating device, and the preheating device is located between the first traction assembly and the forming device.

[0014] As a further improvement of the above technical solution: it also includes an electrical control box, the forming film placement and stretching station is located at the lower side of the first traction component, the coating film placement and stretching station is located at the upper side of the heat sealing device, the waste collection station is located at the upper side of the second traction component, and the electrical control box is located at the lower side of the forming film between the first traction component and the second traction component.

[0015] Compared with the prior art, the advantages of the present invention are as follows: the blister packaging machine disclosed in the present invention has a forming film traction device that adopts double-station traction, and each traction station can realize the conveyance of the forming film by rotating the active traction roller and the driven traction roller without the reciprocating motion of the cylinder and the connecting rod mechanism, and the structure is simple, reliable, and occupies less space; a synchronization mechanism is arranged between the active traction rollers of the two groups of traction components, so that synchronous traction can be realized to smoothly convey the forming film, and the forming film between the two traction stations due to the front and rear asynchronism can be avoided. Pulling or loosening of the forming film between the two traction stations is avoided, which is conducive to ensuring the high-speed and stable operation of each device on the blister packaging machine and improving the packaging efficiency of the blister packaging machine; the first traction component, the forming device, the drug filling station, the visual inspection device, the heat sealing device, the second traction component and the cutting device are arranged in sequence, the first traction component is arranged close to the forming film placement and stretching station, the second traction component is arranged close to the waste collection station, and the film coating placement and stretching station are located on one side of the heat sealing device, the structure is compact, the space occupied by the equipment can be reduced to the greatest extent, and it is conducive to the layout in the factory. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the blister packaging machine of the present invention.

[0017] Figure 2 It is a schematic diagram of the main structure of the blister packaging machine of the present invention.

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the forming film traction device in the present invention.

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the synchronization mechanism in the present invention.

[0020] Figure 5 It is a schematic diagram of the connection structure of the driving component in the present invention.

[0021] Figure 6 It is a schematic diagram of the three-dimensional structure of the first traction component in the present invention.

[0022] Figure 7 It is a schematic diagram of the three-dimensional structure of the second traction assembly in the present invention.

[0023] Figure 8 It is a schematic diagram of the three-dimensional structure of the forming device in the present invention.

[0024] Fig. 9 It is a schematic diagram of the exploded structure of the forming device in the present invention.

[0025] Fig.10 It is a schematic diagram of the three-dimensional structure of the heat-sealing upper mold in the present invention.

[0026] Fig.11 It is a schematic diagram of the exploded structure of the locking mechanism in the heat-sealing upper die of the present invention.

[0027] The reference numerals in the figure indicate: 1. forming film traction device; 11. first traction assembly; 12. second traction assembly; 13. active traction roller; 131. active gear; 14. driven traction roller; 141. driven gear; 15. driving component; 151. active pulley; 152. driven pulley; 153. synchronous belt; 16. synchronous mechanism; 161. first sprocket; 162. second sprocket; 163. synchronous chain; 17. pressing cylinder; 18. tensioning wheel; 19. reversing sprocket; 2. forming film placement and stretching station; 3. , molding device; 31. punch assembly; 311. punch body; 312. cooling plate; 32. die; 33. mounting plate; 331. adjusting sleeve; 34. guide assembly; 341. guide sleeve; 342. threaded connector; 35. elastic buffer assembly; 351. spring sleeve; 352. disc spring; 36. molding machine base; 4. drug filling station; 5. visual inspection device; 6. lamination placement and stretching station; 7. heat sealing device; 8. cutting device; 9. waste collection station; 100. rack; 200. preheating device. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Figures 1 to 11 An embodiment of the present invention is shown. The blister packaging machine of this embodiment includes a frame 100. The frame 100 is provided with a forming film traction device 1, a forming film placement and stretching station 2, a forming device 3, a medicine filling station 4, a visual inspection device 5, a film placement and stretching station 6, a heat sealing device 7, a cutting device 8, and a waste collection station 9. The forming film traction device 1 includes a first traction component 11 and a second traction component 12. The first traction component 11 and the second traction component 12 both include an active traction roller 13 and a driven traction roller 14 connected to the active traction roller 13. The forming film clamp It is arranged between the active traction roller 13 and the driven traction roller 14. The active traction roller 13 of the first traction assembly 11 or the second traction assembly 12 is connected with a driving component 15. A synchronization mechanism 16 is arranged between the two active traction rollers 13. The first traction assembly 11 is arranged near the forming film placement and stretching station 2, and the second traction assembly 12 is arranged near the waste collection station 9. The first traction assembly 11, the forming device 3, the drug filling station 4, the visual inspection device 5, the heat sealing device 7, the second traction assembly 12 and the cutting device 8 are arranged in sequence, and the film placement and stretching station 6 is located on one side of the heat sealing device 7. Of course, in other embodiments, the two active traction rollers 13 can also be connected to the driving components 15 respectively, and then the driving components 15 of the two can be operated synchronously. For example, the two servo motors can be controlled to start at the same time and keep the speed and rotation direction the same, so as to realize the synchronous operation of the two active traction rollers 13. The disadvantage is that an additional driving component 15 needs to be set, and the advantage is that a mechanical synchronization mechanism 16 can be reduced. As a preferred technical solution, in this embodiment, the forming film placement and stretching station 2 is located at the lower side of the first traction component 11, the coating film placement and stretching station 6 is located at the upper side of the heat sealing device 7, the waste collection station 9 is located at the upper side of the second traction component 12, and the electrical control box 300 of the blister packaging machine is arranged at the lower side of the forming film between the first traction component 11 and the second traction component 12. Compared with the common in-line structure, it is beneficial to further reduce the space occupied in the length direction.

[0030] The blister packaging machine has a forming film traction device 1 that adopts double-station traction. Each traction station can realize the conveyance of the forming film by the rotation of the active traction roller 13 and the driven traction roller 14, without the reciprocating motion of the cylinder and the connecting rod mechanism. The structure is simple, reliable and occupies less space. A synchronization mechanism 16 is arranged between the first traction component 11 and the second traction component 12, so that synchronous traction can be realized to smoothly convey the forming film, and the forming film between the two traction stations can be prevented from being pulled or loosened due to the front and rear asynchronism, which is conducive to ensuring the high-speed and stable operation of each device on the blister packaging machine and improving the packaging efficiency of the blister packaging machine. The first traction component 11, the forming device 3, the drug filling station 4, the visual inspection device 5, the heat sealing device 7, the second traction component 12 and the cutting device 8 are arranged in sequence, the first traction component 11 is arranged near the forming film placement and stretching station 2, the second traction component 12 is arranged near the waste collection station 9, and the film coating placement and stretching station 6 is located on one side of the heat sealing device 7. The structure is compact, the space occupied by the equipment can be reduced to the greatest extent, and it is conducive to the layout in the factory.

[0031] Furthermore, in the present embodiment, the synchronization mechanism 16 comprises a first sprocket 161, a second sprocket 162, and a synchronization chain 163 wound around the first sprocket 161 and the second sprocket 162, the first sprocket 161 and the second sprocket 162 are coaxially arranged with the two active traction rollers 13, respectively, the driving component 15 is a servo motor, the servo motor has high precision and is easy to realize automatic control; a driving pulley 151 is installed on the rotating shaft of the servo motor, one of the active traction rollers 13 is equipped with a synchronously rotating driven pulley 152, and a synchronous belt 153 is wound around the driving pulley 151 and the driven pulley 152, that is, the driving component 15 drives the corresponding active traction roller 13 to rotate through the driving pulley 151, the synchronous belt 153 and the driven pulley 152 in turn. The synchronization mechanism 16 has a simple and reliable structure, and can ensure the synchronous operation between the two active traction rollers 13. Of course, in other embodiments, other known structures that can achieve the synchronous operation between the two active traction rollers 13 can also be used, wherein the sprocket and the traction roller can be coaxially arranged on the same rotating shaft or on two rotating shafts with overlapping axes, and the two rotating shafts are connected to maintain synchronous operation; as a further preferred technical solution, a tensioning wheel 18 and a reversing sprocket 19 can be configured for the synchronous chain 163. The provision of the tensioning wheel 18 is conducive to compensating for the possible elongation of the synchronous chain 163 after long-term use, and ensuring the synchronous operation between the two active traction rollers 13; the provision of the reversing sprocket 19 is conducive to optimizing the overall layout of the synchronization mechanism 16, making the structure more compact. The synchronous belt 153 can also be configured with a tensioning wheel 18, which is conducive to compensating for the elongation of the synchronous belt 153 after long-term use, and ensuring long-term reliable transmission between the active pulley 151 and the driven pulley 152.

[0032] Furthermore, in this embodiment, the active traction roller 13 is equipped with a synchronously rotating active gear 131, and the driven traction roller 14 is equipped with a synchronously rotating driven gear 141. The active gear 131 and the driven gear 141 are meshed, and the structure is simple and reliable, which is conducive to ensuring a reliable connection between the active traction roller 13 and the driven traction roller 14. Of course, in other embodiments, other known transmission structures can also be used to achieve the transmission connection between the active traction roller 13 and the driven traction roller 14. Among them, the synchronous rotation of the gear and the traction roller can be that the two are arranged on the same rotating shaft, or that the two are arranged on two rotating shafts with overlapping axes, and the two rotating shafts are connected to maintain synchronous operation.

[0033] Furthermore, in this embodiment, both ends of the rotating shaft of the driven traction roller 14 are provided with a pressing cylinder 17 for pressing the driven traction roller 14 against the active traction roller 13. By providing the pressing cylinder 17, the driven traction roller 14 can be pressed against the active traction roller 13 to ensure that the formed film between the two is clamped, which is conducive to ensuring the smooth transportation of the formed film. At the same time, the elongation of the piston rod of the pressing cylinder 17 and the size of the pressing force can be flexibly adjusted.

[0034] Furthermore, in this embodiment, the molding device 3 includes a male mold assembly 31, a female mold 32 located below the male mold assembly 31 and capable of reciprocating up and down, and a mounting plate 33 located above the male mold assembly 31. A guide assembly 34 is provided on the mounting plate 33. The upper end of the guide assembly 34 is positioned on the mounting plate 33, and the lower end is connected to the male mold assembly 31. An elastic buffer assembly 35 is sleeved on the outer periphery of the guide assembly 34. The upper end of the elastic buffer assembly 35 abuts against the mounting plate 33, and the lower end abuts against the male mold assembly 31. Among them, the male mold assembly 31 is used for molding, that is, forming the set product shape; the female mold 32 is installed on the molding machine base 36, and the reciprocating up and down movement of the female mold 32 can be realized by, for example, a cam mechanism or the like. On the one hand, the guide component 34 provides a guide for the up and down movement of the punch component 31, and on the other hand, it is used for positioning and installing the elastic buffer component 35. The upper and lower ends of the elastic buffer component 35 are respectively in contact with the mounting plate 33 and the punch component 31. During operation, when the punch component 31 and the die 32 begin to contact, they will be subject to the preload force generated by the elastic buffer component 35, which will play a certain buffering role and avoid rigid contact. When the punch component 31 moves to the highest point, the elastic force generated by the compression deformation of the elastic buffer component 35 will make the punch component 31 and the die 32 used for forming in close contact. If the hard aluminum cold stamping type is used, the pressure generated by the compression deformation of the elastic buffer component 35 will act on the forming hard aluminum through the punch component 31, thereby forming the product shape set by the forming mold.

[0035] Furthermore, in the present embodiment, a threaded hole is provided on the mounting plate 33 and an adjusting sleeve 331 is installed in the threaded hole, an outer wall of the adjusting sleeve 331 is provided with an adjusting thread matching the threaded hole, the guide assembly 34 comprises a guide sleeve 341 and a threaded connector 342 provided in the guide sleeve 341, the upper end of the guide sleeve 341 is positioned at the upper end of the adjusting sleeve 331 (for example, both adopt a T-shaped structure, and the maximum diameter of the guide sleeve 341 is larger than the maximum diameter of the adjusting sleeve 331), the lower end of the threaded connector 342 is connected to the punch assembly 31 by a thread, and the distance between the mounting plate 33 and the punch assembly 31 can be adjusted by adjusting the upper and lower positions of the adjusting sleeve 331, thereby realizing the size of the preload force of the elastic buffer assembly 35, and the structure is simple and reliable, and the adjustment is convenient, and the disassembly and assembly are convenient.

[0036] Furthermore, in this embodiment, the male mold assembly 31 includes a male mold body 311 and a cooling plate 312 disposed on the male mold body 311, the lower end of the guide assembly 34 is connected to the cooling plate 312, and the lower end of the elastic buffer assembly 35 is in contact with the cooling plate 312. The male mold body 311 is used for molding, and the cooling plate 312 is used to cool the male mold body 311 after heating to ensure the long-term stable operation of the male mold body 311. The cooling plate 312 can be, for example, a cooling structure with a water-cooling cavity.

[0037] Furthermore, in this embodiment, the guide assembly 34 is provided with multiple groups and arranged at intervals on the mounting plate 33, and the outer periphery of each group of guide assembly 34 is sleeved with an elastic buffer assembly 35. Affected by the processing accuracy, etc., when the male mold body 311 contacts the female mold 32, there will inevitably be a gap, resulting in air leakage. Multiple groups of elastic buffer assemblies 35 are arranged at intervals on the mounting plate 33. When the male mold assembly 31 moves to the highest point, the elastic buffer assemblies 35 at different positions can be used to produce different degrees of compression deformation, so that the male mold assembly 31 and the female mold 32 are in close contact to avoid air leakage. As a preferred technical solution, in this embodiment, the elastic buffer assembly 35 includes a disc spring seat 351 and a disc spring 352 arranged in the disc spring seat 351. The disc spring seat 351 is arranged on the male mold assembly 31, and there is a gap between the disc spring seat 351 and the mounting plate 33 to avoid the disc spring seat 351 from rigidly contacting the mounting plate 33. The lower end of the disc spring 352 abuts against the disc spring seat 351, and the upper end abuts against the mounting plate 33. The disc spring 352 is used to achieve elastic buffering, which makes it easy to adjust different combinations of the disc springs 352 or the number of stacked layers to meet different elastic force requirements. The structure is simple and the adjustment is convenient.

[0038] Furthermore, the heat sealing device 7 includes a heat sealing upper mold 72, which includes two frame wall panels 71 arranged on the frame 100, and the two frame wall panels 71 are arranged on both sides of the heat sealing upper mold 72. A locking assembly 73 is provided on the frame wall panel 71, and the locking assembly 73 includes a locking rod 731, an elastic locking member 732, an unlocking member 733 for driving the locking rod 731 to move downward, a limiting member 734, and a positioning member 735 connected to the heat sealing upper mold 72. The locking rod 731 passes through the frame wall panel 71, the limiting member 734 is arranged at the upper end of the locking rod 731, and the positioning member 735 is arranged at the lower end of the locking rod 731. The upper end of the elastic locking member 732 abuts against the limiting member 734, and the lower end abuts against the frame wall panel 71. Among them, a heating plate 75 is provided above the heat-sealing upper mold 72 for heating the heat-sealing upper mold 72 to the temperature required by the process, and a heat-sealing bottom plate 74 is provided above the heating plate 75, and the heat-sealing bottom plate 74 and the heating plate 75 are fixedly connected by fasteners; as a preferred technical solution, two frame wall panels 71 are respectively arranged on the left and right sides or the front and rear sides of the heat-sealing upper mold 72. The elastic force of the elastic locking member 732 can be used to lift the limiter 734, the locking rod 731, the positioning member 735 and the heat-sealing upper mold 72 as a whole and keep them locked; when unlocking, the unlocking member 733 is used to drive the locking rod 731 to overcome the elastic force of the elastic locking member 732 and press down, so that the limiter 734, the locking rod 731, the positioning member 735 and the heat-sealing upper mold 72 are moved down as a whole to achieve unlocking. After the unlocking member 733 moves up, the elastic locking member 732 can rely on its own elastic deformation to automatically achieve re-locking, which has a simple and reliable structure and is very fast and convenient to operate. As a preferred technical solution, in this embodiment, the unlocking member 733 is an unlocking cylinder and is arranged above the locking rod 731. When the piston rod of the cylinder is extended, the locking rod 731 can be driven to move downward to achieve unlocking. When the piston rod of the cylinder is retracted, the elastic locking member 732 drives the locking rod 731 to move upward to achieve automatic locking. The structure is simple and reliable. Of course, in other embodiments, the unlocking member 733 can also adopt other known components, mechanisms, etc. that can telescope up and down.

[0039] Furthermore, in this embodiment, the upper and lower positions of the stopper 734 are adjustable. By adjusting the upper and lower positions of the stopper 734, the preload force of the elastic locking member 732 can be adjusted, thereby achieving the purpose of adjusting the locking force of the heat-sealing upper die 72. As a further preferred technical solution, the stopper 734 can be, for example, a stopper nut, which can be adjusted by rotating the stopper nut, which is very convenient. Of course, in other embodiments, the stopper 734 can also be adjusted on the locking rod 731 by using other known structures or components.

[0040] Furthermore, in this embodiment, a stepped hole 711 is provided in the rack wall plate 71, and the lower end of the elastic locking member 732 is provided at the upper section of the stepped hole 711. The stepped hole 711 can be used to realize the positioning of the elastic locking member 732. Of course, in other embodiments, the elastic locking member 732 can also be directly arranged on the rack wall plate 71, and the unlocking and automatic locking functions can also be realized.

[0041] As a preferred technical solution, in this embodiment, the elastic locking member 732 is a spring and is sleeved on the outer periphery of the locking rod 731. Of course, in other embodiments, the elastic locking member 732 can also be a disc spring, elastic rubber, etc.

[0042] Furthermore, in this embodiment, a sliding sleeve 736 is provided at the lower section of the stepped hole 711, and the locking rod 731 passes through the sliding sleeve 736. The sliding sleeve 736 can provide a limit and guide for the up and down movement of the locking rod 731, making the movement more stable and smooth.

[0043] As a preferred technical solution, in this embodiment, each rack wall panel 71 is provided with two sets of locking components 73, and the two sets of locking components 73 are respectively provided at both ends of the rack wall panel 1. Of course, in other embodiments, the number of locking components 73 can also be appropriately adjusted according to the size of the heat-sealing upper mold 72, for example, only one set is provided and arranged in the middle of the rack wall panel 71; or multiple sets are evenly arranged along the length direction of the rack wall panel 71.

[0044] Furthermore, in this embodiment, positioning grooves 721 are provided on both sides of the heat-sealing upper mold 72, and a positioning portion 712 is provided on the frame wall plate 71. The positioning member 735 and the positioning portion 712 both extend into the positioning grooves 721 on the corresponding side. Reliable positioning is achieved through the positioning grooves 721, the positioning member 735, and the positioning portion 712.

[0045] Furthermore, the heat sealing device 7 includes a heat sealing upper mold 72, which includes two frame wall panels 71 arranged on the frame 100, and the two frame wall panels 71 are arranged on both sides of the heat sealing upper mold 72. A locking assembly 73 is provided on the frame wall panel 71, and the locking assembly 73 includes a locking rod 731, an elastic locking member 732, an unlocking member 733 for driving the locking rod 731 to move downward, a limiting member 734, and a positioning member 735 connected to the heat sealing upper mold 72. The locking rod 731 passes through the frame wall panel 71, the limiting member 734 is arranged at the upper end of the locking rod 731, and the positioning member 735 is arranged at the lower end of the locking rod 731. The upper end of the elastic locking member 732 abuts against the limiting member 734, and the lower end abuts against the frame wall panel 71. Among them, a heating plate 75 is provided above the heat-sealing upper mold 72 for heating the heat-sealing upper mold 72 to the temperature required by the process, and a heat-sealing bottom plate 74 is provided above the heating plate 75, and the heat-sealing bottom plate 74 and the heating plate 75 are fixedly connected by fasteners; as a preferred technical solution, two frame wall panels 71 are respectively arranged on the left and right sides or the front and rear sides of the heat-sealing upper mold 72. The elastic force of the elastic locking member 732 can be used to lift the limiter 734, the locking rod 731, the positioning member 735 and the heat-sealing upper mold 72 as a whole and keep them locked; when unlocking, the unlocking member 733 is used to drive the locking rod 731 to overcome the elastic force of the elastic locking member 732 and press down, so that the limiter 734, the locking rod 731, the positioning member 735 and the heat-sealing upper mold 72 are moved down as a whole to achieve unlocking. After the unlocking member 733 moves up, the elastic locking member 732 can rely on its own elastic deformation to automatically achieve re-locking, which has a simple and reliable structure and is very fast and convenient to operate. As a preferred technical solution, in this embodiment, the unlocking member 733 is an unlocking cylinder and is arranged above the locking rod 731. When the piston rod of the cylinder is extended, the locking rod 731 can be driven to move downward to achieve unlocking. When the piston rod of the cylinder is retracted, the elastic locking member 732 drives the locking rod 731 to move upward to achieve automatic locking. The structure is simple and reliable. Of course, in other embodiments, the unlocking member 733 can also adopt other known components, mechanisms, etc. that can telescope up and down.

[0046] Furthermore, in this embodiment, the upper and lower positions of the stopper 734 are adjustable. By adjusting the upper and lower positions of the stopper 734, the preload force of the elastic locking member 732 can be adjusted, thereby achieving the purpose of adjusting the locking force of the heat-sealing upper die 72. As a further preferred technical solution, the stopper 734 can be, for example, a stopper nut, which can be adjusted by rotating the stopper nut, which is very convenient. Of course, in other embodiments, the stopper 734 can also be adjusted on the locking rod 731 by using other known structures or components.

[0047] Furthermore, in this embodiment, a stepped hole 711 is provided in the rack wall plate 71, and the lower end of the elastic locking member 732 is provided at the upper section of the stepped hole 711. The stepped hole 711 can be used to realize the positioning of the elastic locking member 732. Of course, in other embodiments, the elastic locking member 732 can also be directly arranged on the rack wall plate 71, and the unlocking and automatic locking functions can also be realized.

[0048] As a preferred technical solution, in this embodiment, the elastic locking member 732 is a spring and is sleeved on the outer periphery of the locking rod 731. Of course, in other embodiments, the elastic locking member 732 can also be a disc spring, elastic rubber, etc.

[0049] Furthermore, in this embodiment, a sliding sleeve 736 is provided at the lower section of the stepped hole 711, and the locking rod 731 passes through the sliding sleeve 736. The sliding sleeve 736 can provide a limit and guide for the up and down movement of the locking rod 731, making the movement more stable and smooth.

[0050] As a preferred technical solution, in this embodiment, each rack wall panel 71 is provided with two sets of locking components 73, and the two sets of locking components 73 are respectively provided at both ends of the rack wall panel 1. Of course, in other embodiments, the number of locking components 73 can also be appropriately adjusted according to the size of the heat-sealing upper mold 72, for example, only one set is provided and arranged in the middle of the rack wall panel 71; or multiple sets are evenly arranged along the length direction of the rack wall panel 71.

[0051] Furthermore, in this embodiment, positioning grooves 721 are provided on both sides of the heat-sealing upper mold 72, and a positioning portion 712 is provided on the frame wall plate 71. The positioning member 735 and the positioning portion 712 both extend into the positioning grooves 721 on the corresponding side. Reliable positioning is achieved through the positioning grooves 721, the positioning member 735, and the positioning portion 712.

[0052] The PVC molding material needs to be preheated by the preheating device 200, but the hard aluminum molding material does not need to be heated. Therefore, in this embodiment, the blister packaging machine further includes the preheating device 200, which is located between the first traction assembly 11 and the molding device 3, so that the blister packaging machine of the present invention can be applied to molding materials that need to be preheated, such as PVC.

[0053] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A blister packaging machine, comprising a frame (100), wherein the frame (100) is provided with a forming film pulling device (1), a forming film placing and stretching station (2), a forming device (3), a medicine filling station (4), a visual inspection device (5), a film placing and stretching station (6), a heat sealing device (7), a cutting device (8), and a waste material collecting station (9), wherein: The formed film traction device (1) comprises a first traction assembly (11) and a second traction assembly (12), wherein the first traction assembly (11) and the second traction assembly (12) both comprise an active traction roller (13) and a driven traction roller (14) connected to the active traction roller (13), the formed film is sandwiched between the active traction roller (13) and the driven traction roller (14), the active traction roller (13) of the first traction assembly (11) or the second traction assembly (12) is connected to a driving component (15), a synchronization mechanism (16) is provided between the two active traction rollers (13), and the synchronization mechanism (16) comprises a first sprocket (11); 61), a second sprocket (162), and a synchronous chain (163) wound around the first sprocket (161) and the second sprocket (162), the first sprocket (161) and the second sprocket (162) are respectively arranged coaxially with the two active traction rollers (13), the synchronous chain (163) is equipped with a plurality of reversing sprockets (19) to form a concave structure, the first sprocket (161) and the second sprocket (162) are respectively located at the upper parts of the two ends of the concave structure; the first traction assembly (11) is arranged near the forming film placement and stretching station (2), and the second traction assembly (12) is arranged near the waste material collection station (2). The workstation (9) is arranged in such a way that the first traction assembly (11), the forming device (3), the drug filling station (4), the visual inspection device (5), the heat sealing device (7), the second traction assembly (12) and the cutting device (8) are arranged in sequence, and the film placement and stretching station (6) is located on one side of the heat sealing device (7); the heat sealing device (7) comprises a heat sealing upper die (72), and the heat sealing upper die (72) comprises two frame wall panels (71) arranged on the frame (100), and the two frame wall panels (71) are respectively arranged on both sides of the heat sealing upper die (72), and a locking assembly is provided on the frame wall panel (71). (73), the locking assembly (73) includes a locking rod (731), an elastic locking member (732), an unlocking member (733) for driving the locking rod (731) to move downward, a limiting member (734), and a positioning member (735) connected to the heat-sealing upper mold (72), the locking rod (731) passes through the frame wall panel (71), the limiting member (734) is arranged at the upper end of the locking rod (731), the positioning member (735) is arranged at the lower end of the locking rod (731), the upper end of the elastic locking member (732) abuts against the limiting member (734), and the lower end abuts against the frame wall panel (71).

2. The blister packaging machine according to claim 1, characterized in that: The driving component (15) is a servo motor, a driving pulley (151) is mounted on the rotating shaft of the servo motor, one of the driving traction rollers (13) is provided with a synchronously rotating driven pulley (152), and a synchronous belt (153) is wound around the driving pulley (151) and the driven pulley (152).

3. The blister packaging machine according to claim 2, characterized in that: The active traction roller (13) is provided with a synchronously rotating active gear (131), and the passive traction roller (14) is provided with a synchronously rotating passive gear (141), and the active gear (131) and the passive gear (141) are meshed.

4. The blister packaging machine according to claim 3, characterized in that: Both ends of the rotating shaft of the driven traction roller (14) are provided with a pressing cylinder (17) for pressing the driven traction roller (14) onto the active traction roller (13).

5. The blister packaging machine according to claim 1, characterized in that: The forming device (3) comprises a male mold component (31), a female mold (32) located below the male mold component (31) and capable of reciprocating up and down, and a mounting plate (33) located above the male mold component (31); a guide component (34) is provided on the mounting plate (33); the upper end of the guide component (34) is positioned on the mounting plate (33), and the lower end is connected to the male mold component (31); an elastic buffer component (35) is sleeved on the outer periphery of the guide component (34); the upper end of the elastic buffer component (35) is in contact with the mounting plate (33), and the lower end is in contact with the male mold component (31).

6. The blister packaging machine according to claim 5, characterized in that: The mounting plate (33) is provided with a threaded hole and an adjusting sleeve (331) is installed in the threaded hole. The outer wall of the adjusting sleeve (331) is provided with an adjusting thread matching the threaded hole. The guide assembly (34) comprises a guide sleeve (341) and a threaded connector (342) arranged in the guide sleeve (341). The upper end of the guide sleeve (341) is positioned at the upper end of the adjusting sleeve (331), and the lower end of the threaded connector (342) is connected to the male mold assembly (31) through a thread.

7. The blister packaging machine according to claim 5, characterized in that: The punch assembly (31) includes a punch body (311) and a cooling plate (312) arranged on the punch body (311), the lower end of the guide assembly (34) is connected to the cooling plate (312), and the lower end of the elastic buffer assembly (35) is in contact with the cooling plate (312).

8. The blister packaging machine according to claim 5, characterized in that: The guide components (34) are provided in multiple groups and are arranged at intervals on the mounting plate (33), and the elastic buffer components (35) are sleeved on the outer periphery of each group of the guide components (34).

9. The blister packaging machine according to any one of claims 1 to 8, characterized in that: It also comprises a preheating device (200), wherein the preheating device (200) is located between the first traction component (11) and the forming device (3).

10. The blister packaging machine according to any one of claims 1 to 8, characterized in that: It also includes an electric control box (300), the forming film placement and stretching station (2) is located on the lower side of the first traction component (11), the coating film placement and stretching station (6) is located on the upper side of the heat sealing device (7), the waste collection station (9) is located on the upper side of the second traction component (12), and the electric control box (300) is located on the lower side of the forming film between the first traction component (11) and the second traction component (12).

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