Roll changing device for blister packaging production line

Abstract

The invention discloses a roll changing device for a blister packaging production line, which comprises a frame and a slideway, a row of reels are placed on the slideway, and a first stop fork is provided at the end of the slideway; the frame is provided with a turntable, a horizontal partition is provided in the middle of the turntable, and two groups of unwinding components are provided above and below the horizontal partition; each group of unwinding components comprises a driving shaft, an inclined pressure plate, and an air pipe nozzle for blowing a strip blank film to the inclined pressure plate; when the reel above the horizontal partition is unwound, the turntable rotates 180 degrees so that the inner liner reaches the rewinding station; the frame is also provided with a discharge arm for grabbing the inner liner; the device also comprises two cantilevers for supporting the reel dropped from the slideway and a slide cylinder for pulling the cantilever backward, and a hook is provided at the front end of each cantilever; the frame is also provided with a lifting platform for installing the slide cylinder; the lifting platform is provided with a lifting component for adjusting the height of the cantilever to ensure that the center hole of the reel supported by the cantilever is facing the driving shaft of the rewinding station. The device can automatically change reels.

Description

Technical Field

[0001] The invention relates to the field of packaging machinery and equipment, in particular to an auxiliary device for a blister packaging production line, and more particularly to a roll changing device for a blister packaging production line. Background Art

[0002] The main part of the blister packaging production line of the existing technology is the blister packaging machine, which mainly includes four devices: blistering, blanking, packaging and punching. Specifically, the blank film reel unwinding will form a strip blank film. The blistering device is responsible for pulling the head end of the strip blank film, pulling it into the blistering device to heat it to soften it, and using vacuum negative pressure suction or high-pressure air blowing to produce blisters, that is, the heated and softened strip blank film is made into a strip-shaped molding film with multiple blisters, and continues to be transported forward to the blanking device; the blanking device is responsible for automatically transporting the packaged particles (generally pills) to fill the corresponding blisters on the molding film; the packaging device is responsible for covering the strip-shaped covering film on the surface of the strip-shaped molding film, and heat-sealing or gluing the covering film and the molding film to form a strip-shaped packaging film, so as to seal the pills in each blister corresponding to the packaging film; finally, the punching device cuts the strip-shaped packaging film encapsulating the pills into multiple small unit plates in sections.

[0003] For the convenience of expression, the blank film reel of the present application will be referred to as a reel in the subsequent text.

[0004] The present application relates to an auxiliary device for the pre-process on the blister packaging production line. Specifically, the reel in the prior art is suspended on the shaft of the unwinding station. After the worker manually extracts the strip of blank film from the reel, the head end of the strip of blank film is pulled into the range of the blistering device, and is clamped and wrapped by the relevant mechanism in the blistering device, and pulled into the blister packaging machine for subsequent processes such as blistering, unloading, and packaging. However, in the prior art, whenever the blank film of the old reel is extracted and only the liner tube is left, the worker needs to remove the liner tube of the old reel from the shaft of the unwinding station, and pick up the new reel and replace it on the shaft of the unwinding station; each new reel generally weighs more than 20 kilograms, which is laborious to carry manually, and the operation has a low degree of automation, and requires a special person to manually change the reel, which has high labor costs. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a roll changing device for a blister packaging production line which can automatically replace a new roll.

[0006] The technical solution of the present invention is to provide a roll changing device for a blister packaging production line, which includes a frame, and the device also includes a slideway with a high front and a low rear, a row of continuous reels are placed on the slideway, and a first stop fork for blocking the first reel and a first positioning cylinder for driving the stop fork are provided at the end of the slideway;

[0007] The frame is rotatably mounted with a turntable, a horizontal partition is fixed in the middle of the turntable, and two groups of unwinding assemblies are respectively arranged above and below the horizontal partition; each group of unwinding assemblies comprises a driving shaft rotatably mounted on the turntable, a hinge seat fixed on the surface of the horizontal partition, and an inclined pressure plate hinged on the hinge seat; the reel sleeved on the driving shaft above the horizontal partition is unwound to form a strip blank film, and each group of unwinding assemblies also comprises an air pipe nozzle for blowing the strip blank film formed by unwinding to the inclined pressure plate;

[0008] When the reel above the diaphragm has been unwound and only the inner liner is left, the turntable rotates 180 degrees, so that the driving shaft with the inner liner reaches the reel changing station;

[0009] The frame is also provided with a discharge arm for grabbing the inner liner tube located at the coil changing station;

[0010] The device also includes two cantilevers for supporting the reel that falls from the slide and a slide cylinder for pulling the cantilever backwards, each cantilever is provided with a hook at the front end, and each cantilever rear end is connected to the slide of the slide cylinder; the frame is also provided with a lifting platform for installing the slide cylinder; the lifting platform is provided with a lifting component for adjusting the height of the cantilever to ensure that the center hole of the reel supported by the cantilever is facing the driving shaft of the reel changing station.

[0011] The operation process of the device is as follows.

[0012] The driving shaft above the diaphragm drives the fitted reels to rotate and unwind to form a strip of blank film; and under the blowing of the cylinder nozzle located above the diaphragm, it approaches the inclined pressure plate, so that the strip of blank film is finally pressed down by the inclined pressure plate and guided into the gap between the inclined pressure plate and the upper surface of the diaphragm. In other words, the head end of the blank film sticks to the upper surface of the diaphragm and moves forward until it reaches the range of the blister device of the blister packaging production line, and is clamped and pulled by the relevant mechanism in the blister device and enters the blister packaging machine for subsequent processes such as blistering, packaging, and punching. When the reel above the diaphragm is unwound and only the inner liner is left, the turntable rotates 180 degrees to make the inner liner reach the reel changing station; then the unloading arm is driven to remove the inner liner fitted on the driving shaft of the reel changing station. At this time, the old reel is automatically disassembled.

[0013] Before the old reel is unwound, the first positioning cylinder lowers the first fork, so that the first reel on the slide slides out of the slide under its own weight and falls onto the two cantilevers; then the lifting assembly moves to adjust the cantilever height to ensure that the center of the reel supported by the cantilever is aligned with the axis of the driving shaft of the reel-changing station; then the slide cylinder is driven to pull the reel backward through the cantilever and hook, so that its center hole is tightly sleeved on the driving shaft of the reel-changing station. When the old reel above the diaphragm is unwound and the turntable rotates 180 degrees, the new reel that has been tightly sleeved on the driving shaft below the diaphragm will rotate synchronously to the unwinding station above the diaphragm to start a new round of unwinding. At this point, the reel change is complete.

[0014] From the above analysis, it can be seen that the roll changing device of the present application can automatically remove the old reel that has been unwound from the unwinding station, and automatically replace the new reel to the unwinding station; the device has a high degree of automation, completely replaces the manual roll changing action, optimizes the labor force of the station, greatly reduces labor costs, and has good economic benefits.

[0015] Preferably, a second fork for blocking the second reel and a second positioning cylinder for driving the fork are also provided at the end of the slide; the second fork and the first fork are used in combination with each other. Specifically, when the first fork falls and the second fork rises, the first reel falls out of the slide, while the second and subsequent reels are blocked. The purpose of this action is to block the pushing of the first reel by the reels above, ensure that the first reel falls smoothly to the cantilever, avoid the situation where the first reel falls out of the cantilever due to excessive pushing from the upper part, and improve the movement accuracy and stability; after the first reel falls out of the slide, the first fork rises and the second fork falls, and the subsequent series of reels move downward the distance of one reel to achieve filling.

[0016] The power input of the turntable part is preferably that two upper and lower brackets are fixed on the rear surface of the turntable, and the two unwinding motors of the two unwinding assemblies are respectively fixed on the two brackets, and the first output gear of each unwinding motor is meshed with the transmission gear on the driving shaft of the same group of unwinding assemblies; the frame is fixed with a bow-shaped frame with an opening facing forward via a tripod, the upper beam of the bow-shaped frame is fixed with a main motor, an inner gear ring is provided in the center of the turntable, and the second output gear of the main motor is meshed with the inner gear ring; in this way, firstly, it is ensured that the power input of the two driving shafts and one turntable is continuous and stable; and the hollow inner gear ring in the middle of the turntable combined with the eccentric input method saves the material in the middle of the turntable and reduces the cost of the turntable; and the backward bending design of the bow-shaped frame not only ensures that the suspended main motor is installed firmly and reliably, but also just makes room to avoid the bracket and the unwinding motor rotating with the turntable, so that the various transmission components can operate in coordination with each other without interfering with each other.

[0017] The connection structure between the turntable and the frame is preferably that the frame is rotatably mounted with a circle of multiple mounting wheels, each mounting wheel is provided with a wheel groove, the outer circumference of the turntable is provided with an annular convex strip, and the annular convex strip is accommodated in each wheel groove of the circle of mounting wheels; the wheel grooves of the above-mentioned circle of multiple mounting wheels have an ideal effect on the straightening and centering of the turntable, and can ensure that the rotatable connection between the turntable and the frame is firm and stable. In this way, the process of eccentric torque transmission can be ensured to be smooth and stable. Otherwise, only a large rigidity, large torque, large size motor and a thicker central transmission shaft can be used to input torque from the center of the turntable; therefore, only after solving the problem of rotatable connection between the turntable and the frame can the turntable be hollowed out to save middle materials, and a small-sized, small rigidity, small torque, cheaper main motor and a small-sized transmission shaft can be selected for eccentric transmission, which can significantly reduce the cost while ensuring stable transmission.

[0018] The connecting structure of the mounting wheel and the frame is preferably that the rear section of the wheel axle of the mounting wheel is a small diameter section with a thread, and a step surface is formed between the normal section of the wheel axle and the small diameter section; the frame is provided with long through holes corresponding to the mounting wheels one by one, and each long through hole extends radially along the turntable; the small diameter section passes through the long through hole and is screwed with a locking nut; in this way, tightening the nut makes the step surface of the wheel axle press against the orifice of the long through hole, thereby quickly realizing the positioning of the wheel axle of the mounting wheel, and loosening the nut can quickly unlock the wheel axle, so that the position of the mounting wheel can be freely adjusted along the long through hole, that is, the radial direction of the turntable; in this way, the positions of the mounting wheels at the lower part of the turntable are first fixed, and then the lower part of the turntable is clamped and supported on the mounting wheels that have been clamped at the lower part, and finally, the remaining upper mounting wheels are moved radially inward, so that the wheel grooves of the upper mounting wheels clamp the annular convex strips of the turntable, and then the nut is tightened to lock the wheel axle position of the upper mounting wheel; in summary, the turntable can be quickly and conveniently installed on the frame and the rotatable connection relationship between the turntable and the frame is firm and stable.

[0019] The above three features cooperate and complement each other. Only by using a wheel axle with a nut and a step surface can the large turntable be clamped in the wheel groove of each mounting wheel quickly and conveniently, and the radial position of each mounting wheel can be flexibly adjusted, so as to flexibly adjust the radial limited clamping degree of each mounting wheel to each point of the turntable to ensure that the turntable is centered and firmly and reliably connected to the frame for rotation; in this way, the equipment foundation and premise can be provided for the eccentric input of power; and only by realizing stable and reliable eccentric input can a series of advantages be derived, such as hollowing out the center of the turntable to save materials, selecting small-power and small-size transposition motors and drive shafts, and thus significantly reducing the cost under the premise of ensuring stable transmission.

[0020] The connection structure between the cantilever and the slide cylinder is preferably that a connecting beam is fixed on the slide of the slide cylinder, and the two ends of the connecting beam are respectively fixed to the rear ends of the two cantilevers, and two sliders are respectively fixed at the two ends of the connecting beam, and the lifting platform body is provided with two slide rails parallel to the cantilever, and each slider is slidably matched on the slide rail on the same side; the lifting platform body is also provided with two reinforcing beams, each reinforcing beam is provided with a guide groove, and a supporting beam is slidably matched in each guide groove, and each supporting beam is fixed to the cantilever on the same side through an angle steel; first, the two cantilevers are fixed to the connecting beam, and the two ends of the connecting beam are slidably matched with the two slide rails through two sliders, so that The cantilever provides strong guidance, ensuring that the process of the slide pulling the cantilever backward is stable, smooth and reliable, and effectively improving the movement accuracy of the new reel being squeezed into the driving shaft of the reel changing station; moreover, each cantilever is connected to a support beam via an angle steel, and the support beam also slides in a guide groove parallel to the cantilever, and the support beam can effectively support the cantilever, thereby improving the strength and rigidity of the cantilever and preventing its cantilevered end from deforming and sagging under the load of the reel; in this way, it is ensured that the two cantilevers can firmly support the reel without the need to use a whole support plate, which vacates the area between the two cantilevers, making it easier for the unloading arm to discharge the inner liner of the old reel from the gap between the two cantilevers.

[0021] The unloading arm preferably includes an x-direction cylinder fixed on the frame, a y-direction cylinder fixed on the piston of the x-direction cylinder, and an air claw fixed on the piston of the y-direction cylinder; the arm drives the air claw along the y-direction to cover the inner liner of the roll changing station, then grasps the inner liner, and then moves the air claw along the x-direction to make the inner liner reach between the two cantilevers, releases the air claw to make the inner liner fall, then retreats along the x-direction, and finally retreats along the y-direction. It is precisely because the strength and stiffness of the two cantilevers are ideal and there is no need to select a solid support plate, so there is enough space between the cantilevers for the unloading arm to unload materials; in this way, only x-direction and y-direction movement are required to realize the unloading and resetting process, which simplifies the structure of the unloading arm to the greatest extent and further reduces the cost.

[0022] As a further preferred embodiment, the frame chassis is provided with a lifting motor, and the lifting motor is connected to a vertical screw through a corner reduction box, the threaded hole of the lifting platform body cooperates with the screw, and the four corners of the lower surface of the lifting platform body are provided with four guide columns and the frame chassis is provided with four guide sleeves, and each guide column is slidably sleeved in the corresponding guide sleeve; two infrared sensors are provided at the 0 o'clock position and the 6 o'clock position of the front end face of each active shaft, and the reel changing device also includes a PLC chip, and the infrared sensor and the lifting motor are both connected to the PLC chip signal. First of all, the ball screw pair operates firmly and reliably as a lifting device; and, as the platform body of the lifting platform rises, if the upper and lower infrared sensors of the active shaft of the reel changing station do not receive a rebound signal, it means that the axis of the active shaft is just facing the center of the new reel, so the alignment result is reported to the PLC, the lifting is stopped, and the height of the reel is locked to ensure the accuracy of the action of pulling the reel into the active shaft of the reel changing station to avoid jamming. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a roll changing device of a blister packaging production line of the present invention.

[0024] Figure 2 The present invention is a schematic structural diagram of a reel in a reel changing device of a blister packaging production line when the reel has been unwound and rotated to the bottom of a horizontal partition.

[0025] Figure 3 yes Figure 2 Schematic diagram of the structure after deflection at a certain angle.

[0026] Figure 4 It is a structural schematic diagram of a slideway of a roll changing device of a blister packaging production line of the present invention.

[0027] Figure 5 yes Figure 2 Schematic diagram of the structure after removing the slide.

[0028] Figure 6 yes Figure 5 Schematic diagram of the structure after deflection at a certain angle.

[0029] Figure 7 yes Figure 6 Schematic diagram of the structure after deflection at a certain angle.

[0030] Figure 8 yes Figure 7 Schematic diagram of the structure after removing the rack.

[0031] Fig. 9 yes Figure 8 Schematic diagram of the enlarged structure of part A.

[0032] Fig.10 yes Figure 8 Schematic diagram of the structure after deflection at a certain angle.

[0033] As shown in the figure: 1. frame, 2. slide, 3. reel, 4. first gear fork, 5. first locking cylinder, 6. main motor, 6.1. second output gear, 7. turntable, 8. partition, 9. unwinding motor, 9.1. first output gear, 10. driving shaft, 11. hinge seat, 12. inclined pressure plate, 13. hinge shaft, 14. air pipe nozzle, 15. inner liner, 16. cantilever, 17. slide cylinder, 18. hook, 19. lifting platform, 19.1. platform body, 20. second gear fork, 21. second locking cylinder, 22. support leg, 23. mounting plate, 24. insert, 25. bracket, 26. transmission gear Wheel, 27. Tripod, 28. Bow frame, 29. Internal gear ring, 30. Mounting wheel, 30.1. Wheel groove, 31. Annular rib, 32. Wheel axle, 32.1. Small diameter section, 32.2. Step surface, 32.3. Locking nut, 33. Long through hole, 34. Connecting beam, 35. Slider, 36. Slide rail, 37. Reinforcement beam, 38. Guide groove, 39. Angle steel, 40. X-axis cylinder, 41. Y-axis cylinder, 42. Air claw, 43. Lifting motor, 44. Corner reducer, 45. Screw, 46. Guide column, 47. Guide sleeve, 48. Support beam, 49. Transition bracket, 50. Waste box. DETAILED DESCRIPTION

[0034] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0035] like Figures 1 to 10 As shown, the roll changing device of the blister packaging production line of the present invention comprises a frame 1 and a slideway 2 placed in front of the frame 1. The slideway 2 is high in front and low in the back and is placed on the ground via a plurality of legs 22. A row of multiple continuous reels 3 are placed on the slideway 2. A first stop fork 4 for blocking the first reel 3 and a first positioning cylinder 5 for driving the stop fork and a second stop fork 20 for blocking the second reel 3 and a second positioning cylinder 21 for driving the stop fork are provided at the end of the slideway 2. Specifically, a mounting plate 23 is fixed on the two legs 22 at the end of the slideway 2, the cylinder bodies of the first positioning cylinder 5 and the second positioning cylinder 21 are both fixed on the lower surface of the mounting plate 23, and the pistons of the two cylinders pass through the mounting plate 23; the two stop forks are respectively fixed on the pistons of the corresponding positioning cylinders; the bottom plate at the end of the slideway 2 is provided with four plug holes, and the four insertion strips 24 of the first stop fork 4 and the second stop fork 20 respectively pass through the four plug holes. The first reel 3 is the one closest to the exit of the slide 2 ; the second reel 3 is the one second closest to the exit of the slide 2 .

[0036] The frame 1 is rotatably mounted with a turntable 7. Specifically, the frame 1 is rotatably mounted with a plurality of mounting wheels 30, each mounting wheel 30 is provided with a wheel groove 30.1 on its circumference, and an annular convex strip 31 is provided on the outer circumference of the turntable 7, and the annular convex strip 31 is accommodated in each wheel groove 30.1 of the mounting wheel 30.

[0037] Each mounting wheel 30 is rotatably matched with its own wheel axle 32. The rear section of the wheel axle 32 of the mounting wheel 30 is a threaded small diameter section 32.1, and a step surface 32.2 is formed between the normal section of the wheel axle 32 and the small diameter section 32.1; the frame 1 is provided with a long through hole 33 corresponding to each mounting wheel 30, and each long through hole 33 extends radially along the turntable 7; the small diameter section 32.1 passes through the long through hole 33 and is screwed with a locking nut 32.3. Tightening the locking nut 32.3 will pull the wheel axle 32 backward so that the step surface 32.2 is pressed against the front opening of the long through hole 33.

[0038] The turntable 7 is driven by a main motor 6. Specifically, a frame 1 is fixed with a bow frame 28 with an opening facing forward via a tripod 27. The main motor 6 is fixed to the upper beam of the bow frame 28. An inner gear ring 29 is provided in the center of the turntable 7. The second output gear 6.1 of the main motor 6 is meshed with the inner gear ring 29.

[0039] A transverse partition 8 is fixed in the middle of the rotating disk 7, and two groups of unwinding components are respectively arranged above and below the transverse partition 8. Each group of unwinding components includes a driving shaft 10, a hinge seat 11 and an air pipe nozzle 14.

[0040] The driving shaft 10 of each group of unwinding components can be rotatably mounted on the turntable 7 and driven by the unwinding motor 9; specifically, two upper and lower brackets 25 belonging to different unwinding components are fixed to the rear surface of the turntable 7, and the two unwinding motors 9 of the two groups of unwinding components are respectively fixed on the two brackets 25, and the first output gear 9.1 of each unwinding motor 9 is meshed with the transmission gear 26 on the driving shaft 10 of the same group of unwinding components.

[0041] The hinge seat 11 of each set of unwinding components is fixed on the upper surface or the lower surface of the transverse partition 8. Each hinge seat 11 is provided with a hinge shaft 13, and each hinge shaft 13 is hinged with an inclined pressure plate 12.

[0042] The driving shaft 10 above the horizontal partition 8 is an unwinding station, and the reel 3 fitted on the driving shaft 10 of the unwinding station is driven by the driving shaft 10 to unwind to form a strip blank film.

[0043] The air pipe nozzle 14 of each unwinding assembly is fixed to the upper surface or the lower surface of the cross partition 8 via a transition bracket 49 .

[0044] The air pipe nozzle 14 of the unwinding assembly located above the diaphragm 8 can blow the strip blank film formed by unwinding toward the gap between the inclined pressure plate 12 and the upper surface of the diaphragm 8 .

[0045] When the reel 3 above the diaphragm 8 has been unwound and only the inner liner 15 is left, the turntable 7 rotates 180 degrees, so that the driving shaft 10 with the inner liner 15 is reached at the reel changing station below the diaphragm 8.

[0046] The frame 1 is also provided with a unloading arm for grabbing the inner liner 15 on the driving shaft 10 located at the roll changing station; the unloading arm includes an x-axis cylinder 40 fixed on the frame 1, a y-axis cylinder 41 fixed on the piston of the x-axis cylinder 40, and an air claw 42 fixed on the piston of the y-axis cylinder 41.

[0047] The device also includes two cantilevers 16 for supporting the reel 3 dropped from the slideway 2 and a slide cylinder 17 for pulling the cantilever 16 backwards. The front end of each cantilever 16 is provided with a hook 18 for pulling the supported reel 3, and the rear end of each cantilever 16 is connected to the slide of the slide cylinder 17. Specifically, a connecting beam 34 is fixed to the slide of the slide cylinder 17, and the two ends of the connecting beam 34 are respectively fixed to the rear ends of the two cantilevers 16, and two sliders 35 are respectively fixed to the two ends of the connecting beam 34. The platform body 19.1 of the lifting platform 19 is provided with two slide rails 36 parallel to the cantilever 16, and each slider 35 is slidably matched on the slide rail 36 on the same side; the platform body 19.1 of the lifting platform 19 is also provided with two reinforcing beams 37, each reinforcing beam 37 is provided with a guide groove 38, and each guide groove 38 is slidably matched with a supporting beam 48, and each supporting beam 48 is fixed to the cantilever 16 on the same side through an angle steel 39.

[0048] Each reinforcement beam 37 is parallel to the slide rail 36 on the same side and is located below the slide rail 36 .

[0049] After the unloading arm grabs the inner liner tube 15 on the roll changing station, it throws the inner liner tube 15 from the gap between the two cantilevers 16 and finally drops it into the waste box 50 placed on the ground.

[0050] The frame 1 is also provided with a lifting platform 19 for fixing the cylinder body of the slide cylinder 17; the lifting platform 19 is provided with a lifting component for adjusting the height of the slide cylinder 17 and the cantilever 16 to ensure that the center hole of the reel 3 supported by the cantilever 16 is aligned with the axis of the driving shaft 10 of the reel changing station.

[0051] Specifically, the chassis of the frame 1 is provided with a lifting motor 43, and the lifting motor 43 is connected to a vertical screw 45 via a corner reduction box 44. The threaded hole of the platform body 19.1 of the lifting platform 19 cooperates with the screw 45. Four guide columns 46 are provided at the four corners of the lower surface of the platform body 19.1 of the lifting platform 19, and the chassis of the frame 1 is provided with four guide sleeves 47, and each guide column 46 is slidably fitted in the corresponding guide sleeve 47.

[0052] Two infrared sensors are provided at the 0 o'clock position and the 6 o'clock position of the front end surface of each driving shaft 10. The roll changing device also includes a PLC chip, and the infrared sensor and the lifting motor 43 are both connected to the PLC chip signal. Of course, it is known from common sense that each cylinder, motor, etc. of the present application is connected to the PLC chip signal.

Claims

1. A roll changing device for a blister packaging production line, comprising a frame (1), characterized in that: The device also includes a slideway (2) which is higher in front and lower in the back, a row of continuous reels (3) are placed on the slideway (2), and a first stop fork (4) for blocking the first reel (3) and a first locking cylinder (5) for driving the stop fork are provided at the end of the slideway (2); A rotating disc (7) is rotatably mounted on the frame (1), a transverse partition (8) is fixed in the middle of the rotating disc (7), and two groups of unwinding components are respectively arranged above and below the transverse partition (8); each group of unwinding components comprises a driving shaft (10) rotatably mounted on the rotating disc (7), a hinge seat (11) fixed on the surface of the transverse partition (8), and an inclined pressure plate (12) hinged on the hinge seat (11); the reel (3) sleeved on the driving shaft (10) above the transverse partition (8) is unwound to form a strip blank film, and each group of unwinding components also comprises an air pipe nozzle (14) for blowing the strip blank film formed by unwinding toward the inclined pressure plate (12); When the reel (3) above the transverse diaphragm (8) has been unwound and only the inner liner (15) is left, the turntable (7) rotates 180 degrees, so that the driving shaft (10) sleeved with the inner liner (15) reaches the reel changing station; The frame (1) is also provided with a discharge arm for grabbing the inner liner (15) located at the roll changing station; The device also includes two cantilevers (16) for supporting the reel (3) that falls from the slideway (2) and a slide cylinder (17) for pulling the cantilever (16) backwards, a hook (18) being provided at the front end of each cantilever (16), and a rear end of each cantilever (16) being connected to the slide of the slide cylinder (17); the frame (1) is also provided with a lifting platform (19) for installing the slide cylinder (17); the lifting platform (19) is provided with a lifting component for adjusting the height of the cantilever (16) so as to ensure that the center hole of the reel (3) supported by the cantilever (16) is aligned with the driving shaft (10) of the reel changing station.

2. The roll changing device of the blister packaging production line according to claim 1, characterized in that: A second blocking fork (20) for blocking the second reel (3) and a second locking cylinder (21) for driving the blocking fork are also provided at the end of the slideway (2).

3. The roll changing device of the blister packaging production line according to claim 1, characterized in that: Two upper and lower brackets (25) are fixed on the rear surface of the turntable (7); two unwinding motors (9) of the two unwinding assemblies are respectively fixed on the two brackets (25); the first output gear (9.1) of each unwinding motor (9) is meshed with a transmission gear (26) on a driving shaft (10) of the same unwinding assembly; a bow-shaped frame (28) with an opening facing forward is fixed to the frame (1) via a tripod (27); a main motor (6) is fixed to the upper beam of the bow-shaped frame (28); an inner gear ring (29) is provided at the center of the turntable (7); and a second output gear (6.1) of the main motor (6) is meshed with the inner gear ring (29).

4. The roll changing device of the blister packaging production line according to claim 3, characterized in that: The frame (1) is rotatably mounted with a circle of multiple mounting wheels (30), each mounting wheel (30) is provided with a wheel groove (30.1) on its circumference, and an annular convex strip (31) is provided on the outer circumference of the rotating disk (7), and the annular convex strip (31) is accommodated in each wheel groove (30.1) of a circle of mounting wheels (30).

5. The roll changing device of the blister packaging production line according to claim 4, characterized in that: The rear section of the axle (32) of the mounting wheel (30) is a threaded small-diameter section (32.1), and a step surface (32.2) is formed between the normal section of the axle (32) and the small-diameter section (32.1); the frame (1) is provided with long through holes (33) corresponding to the mounting wheels (30), and each long through hole (33) extends radially along the rotating disk (7); the small-diameter section (32.1) passes through the long through hole (33) and is screwed with a locking nut (32.3).

6. The roll changing device of the blister packaging production line according to claim 1, characterized in that: A connecting beam (34) is fixed on the slide of the slide cylinder (17), and the two ends of the connecting beam (34) are respectively fixed to the rear ends of the two cantilevers (16), and two sliders (35) are respectively fixed to the two ends of the connecting beam (34). The platform body (19.1) of the lifting platform (19) is provided with two slide rails (36) parallel to the cantilever (16), and each slider (35) is slidably matched on the slide rail (36) on the same side; the platform body (19.1) of the lifting platform (19) is also provided with two reinforcing beams (37), each reinforcing beam (37) is provided with a guide groove (38), and each guide groove (38) is slidably matched with a supporting beam (48), and each supporting beam (48) is fixed to the cantilever (16) on the same side through an angle steel (39).

7. The roll changing device of the blister packaging production line according to claim 6, characterized in that: The unloading arm comprises an x-direction cylinder (40) fixed on a frame (1), a y-direction cylinder (41) fixed on a piston of the x-direction cylinder (40), and an air claw (42) fixed on a piston of the y-direction cylinder (41).

8. The roll changing device of the blister packaging production line according to claim 1, characterized in that: The chassis of the frame (1) is provided with a lifting motor (43), and the lifting motor (43) is connected to a vertical screw (45) via a corner reduction box (44). The threaded hole of the platform body (19.1) of the lifting platform (19) cooperates with the screw (45). Four guide columns (46) are provided at the four corners of the lower surface of the platform body (19.1) of the lifting platform (19), and the chassis of the frame (1) is provided with four guide sleeves (47). Each guide column (46) is slidably sleeved in the corresponding guide sleeve (47); two infrared sensors are provided at the 0 o'clock position and the 6 o'clock position of the front end surface of each driving shaft (10). The roll changing device also includes a PLC chip, and the infrared sensor and the lifting motor (43) are both connected to the PLC chip signal.

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