Medicine bottle sealing equipment

Abstract

The invention discloses medicine bottle sealing equipment, and belongs to the field of medicine bottle sealing. The medicine bottle sealing equipment comprises a rack, two reciprocating conveying belts and a plurality of clamping units, wherein the two reciprocating conveying belts are symmetrically arranged in the rack, and the clamping units are evenly installed between the two reciprocating conveying belts. The clamping unit comprises a moving frame driven by a reciprocating conveying belt, a sliding base longitudinally sliding on the moving frame, a rotating disc rotationally connected to the lower end of the sliding base and used for adsorbing an aluminum foil layer, and an electromagnetic coil fixedly connected into the sliding base. And a feeding table for placing medicine bottles is arranged between the two reciprocating conveying belts in the rack. Therefore, the scheme can adapt to the medicine bottles with different heights, the application range of the equipment is widened, the equipment does not need to be manually adjusted by workers, and use is convenient.

Description

Technical Field

[0001] The present invention belongs to the field of medicine bottle sealing, and more specifically, relates to a medicine bottle sealing device. Background Art

[0002] Aluminum foil sealing is a common method for sealing medicine packaging, mainly used for the secondary sealing of medicine bottles, bottle caps or containers to ensure the airtightness, moisture resistance and anti-pollution properties of medicines. Its core is to tightly bond the aluminum foil to the bottle mouth through hot pressing to form an airtight seal.

[0003] In existing sealing devices, when sealing medicine bottles with different heights, it is necessary to debug the sealing device in advance to adapt to the height of the current medicine bottle. Each debugging requires manual operation by workers, which is time-consuming and laborious. Some of the devices need to replace components to meet the requirements, resulting in reduced productivity. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a medicine bottle sealing device that can automatically adapt to medicine bottles with different heights.

[0005] A medicine bottle sealing device of the present invention includes a frame, two reciprocating conveyor belts symmetrically distributed inside the frame, and a plurality of clamping units uniformly installed between the two reciprocating conveyor belts; the clamping unit includes a moving frame driven by the reciprocating conveyor belt, a sliding seat longitudinally sliding on the moving frame, a turntable rotatably connected to the lower end of the sliding seat for adsorbing an aluminum foil layer, and an electromagnetic coil fixedly connected inside the sliding seat. Inside the frame, a feeding table for placing medicine bottles is arranged between the two reciprocating conveyor belts.

[0006] As a further improvement of the present invention, feeding conveyor belts for driving the movement of medicine bottles are respectively arranged on both sides of the feeding table on the frame; the feeding conveyor belts are in contact with the outer wall of the medicine bottle; the length direction of the feeding conveyor belts is parallel to the advancing direction of the medicine bottle; the moving speeds of the two feeding conveyor belts are different and the moving directions are opposite.

[0007] As a further improvement of the present invention, synchronous racks perpendicular to the advancing direction of the medicine bottle are arranged on each of the feeding conveyor belts; a synchronous gear rotatably connected inside the frame is simultaneously engaged with the two synchronous racks; the two synchronous racks are centrosymmetrically distributed along the axis of the synchronous gear, and thus the moving directions of the two synchronous racks are opposite; a synchronous motor for driving the synchronous gear to rotate is fixedly connected inside the frame.

[0008] As a further improvement of the present invention, the reciprocating conveyor belt includes a vertically arranged reset section and a pressing section, as well as a horizontally arranged supplementary section and a sealing section; the reciprocating conveyor belt drives the clamping unit to sequentially pass through the supplementary section, the pressing section, the sealing section, and the reset section; when the clamping unit moves along the sealing section, the clamping unit abuts against the medicine bottle and advances synchronously with the medicine bottle.

[0009] As a further improvement of the present invention, the clamping unit further includes a spring arranged between the sliding seat and the moving frame to drive the sliding seat to move downward; a guide rod that abuts against the outer wall of the medicine bottle is arranged below the pressing section on the feeding conveyor belt; the feeding conveyor belt is not directly opposite to the pressing section; when the clamping unit moves downward along the pressing section, one sliding seat will abut against the upper end of the medicine bottle and the spring contracts; when the clamping unit moves from the pressing section to the sealing section, the clamping unit will drive the medicine bottle at the lower end to move synchronously between the two feeding conveyor belts.

[0010] As a further improvement of the present invention, transport seats are evenly arranged on the reciprocating conveyor belt; a rotating column rotatably connected to the transport seat is arranged on the sliding seat; an eccentric column is arranged at an eccentric position on the rotating column; a positioning groove slidably connected to the eccentric column is arranged on the machine frame; when the reciprocating conveyor belt operates, the sliding seat is always horizontal.

[0011] As a further improvement of the present invention, a supplementary mechanism is arranged on the machine frame; the supplementary mechanism includes a base arranged on the machine frame below the supplementary section, a convex platform longitudinally slidable in the base, and a screw rod rotatably connected in the base to drive the convex platform to move; an aluminum foil roll is installed on the base; aluminum foil layers for installation on the medicine bottles are evenly distributed on the aluminum foil roll; a pressing plate is arranged on the machine frame to force the sliding seat on the supplementary section to remain at the lower limit position; an electric push rod fixedly connected to the machine frame drives the base to slide along the movement direction of the supplementary section; when the screw rod drives the convex platform to move upward until the aluminum foil layer abuts against the lower end of the turntable, the screw rod will drive the convex platform, the aluminum foil layer, and the turntable to rotate synchronously.

[0012] As a further improvement of the present invention, a negative pressure cavity is arranged on the turntable; a negative pressure port communicating with the negative pressure cavity is arranged on the surface of the turntable for sucking and tightening the aluminum foil layer; a guide air pipe is fixedly connected to the sliding seat; the guide air pipe communicates with the negative pressure cavity and rotates relatively sealedly; a one-way valve that conducts unidirectionally from the negative pressure cavity to the outside is fixedly connected in the guide air pipe; a ventilation cavity is arranged in the base; a sealing body is slidably and sealedly connected in the ventilation cavity; a chute perpendicular to the sliding direction of the sealing body is arranged on the sealing body; a swing rod slidably connected to the chute is arranged at an eccentric position on the convex platform; when the base is directly opposite to a clamping unit, the ventilation cavity communicates with the corresponding guide air pipe; when the convex platform rotates, the convex platform drives the sealing body to slide, forcing the air in the negative pressure cavity to enter the ventilation cavity.

[0013] As a further improvement of the present invention, a positioning opening for the boss to pass through is provided at the upper end of the base; limiting grooves are uniformly arranged along the circumferential direction on the inner wall of the positioning opening; friction strips are uniformly arranged on the outer wall of the boss; the friction strips cooperate with the limiting grooves, and thus the limiting grooves prevent the rotation of the boss.

[0014] As a further improvement of the present invention, a screw gear is coaxially arranged on the screw; a fixed rack meshing with the screw gear is fixedly connected inside the frame.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: By controlling the reverse operation and different operation speeds of the two feeding conveyor belts in this solution, the medicine bottles clamped between the two feeding conveyor belts rotate during the forward movement. The rotating medicine bottles and the aluminum foil layer will be uniformly heated by the electromagnetic coil, avoiding too high or too low temperature at a certain position of the aluminum foil layer, which affects the quality of the medicine bottle sealing.

[0016] In this solution, the distance between the two feeding conveyor belts is changed through the synchronous gear to adapt to medicine bottles with different diameters.

[0017] In this solution, by arranging a reciprocating conveyor belt, each clamping unit moves cyclically under the action of the reciprocating conveyor belt to seal each medicine bottle. And when the clamping unit moves to the pressing section, the sliding seat will abut against the upper end of the medicine bottle, and then an aluminum foil layer will be abutted against the upper end of the medicine bottle, and the spring will contract. During this process, no matter how the height of the medicine bottle changes, the clamping unit can abut the corresponding aluminum foil layer against the upper end of the medicine bottle and drive the medicine bottle into the sealing section to seal the medicine bottle. Therefore, this solution can adapt to medicine bottles with different heights, improving the application range of the equipment and eliminating the need for manual adjustment of the equipment by workers, which is convenient to use.

[0018] In this solution, by arranging a boss, when the boss moves upward, the boss abuts an aluminum foil layer against the surface of the turntable. Then, as the boss rotates, it forces the aluminum foil layer to separate from the aluminum foil roll, completing the transfer of the aluminum foil layer. At the same time, as the boss rotates, the boss also drives the sealing body to move, forcing the air pressure in the negative pressure cavity to decrease. Through the action of negative pressure, the aluminum foil layer is fixed at the lower end of the turntable, facilitating the subsequent clamping unit to drive the aluminum foil layer towards the medicine bottle.

[0019] In this solution, by controlling the movement of the base, the base moves synchronously with the clamping unit on the reciprocating conveyor belt to prepare for the transfer of the aluminum foil layer to the clamping unit. At the same time, through the cooperation of the fixed rack and the screw gear, the movement of the base can also cause the screw gear to rotate, and then force the screw to rotate. The rotation of the screw can not only drive the boss to move up and down, but also drive the boss to rotate synchronously after the boss moves to the limit position, without additional power components, saving costs. Description of the Drawings

[0020] Figure 1 Schematic structural diagram of the present invention; Figure 2 Schematic cross-sectional structural diagram of the present invention; Figure 3 Schematic installation structural diagram of the clamping unit and the reciprocating conveyor belt of the present invention; Figure 4 Schematic cross-sectional structural diagram of the clamping unit of the present invention; Figure 5 Schematic structural diagram of the replenishing mechanism of the present invention; Figure 6 Schematic structural diagram of the present invention when the clamping unit faces the boss; Figure 7 Schematic structural diagram of the present invention when the clamping unit is located at the pressing section; Figure 8 Exploded structural diagram of the replenishing mechanism of the present invention; Figure 9 Schematic structural diagram of the feeding conveyor belt of the present invention.

[0021] Explanation of the reference numerals in the figure: 1. Frame; 11. Positioning groove; 12. Ball; 13. Pressing plate; 14. Fixed rack; 15. Feeding table; 2. Reciprocating conveyor belt; 21. Transport seat; 22. Replenishing section; 23. Pressing section; 24. Sealing section; 25. Reset section; 3. Feeding conveyor belt; 31. Feeding belt; 32. Guide rod; 33. Synchronous rack; 34. Synchronous gear; 35. Synchronous motor; 4. Clamping unit; 41. Slide seat; 42. Moving frame; 421. Rotating column; 422. Eccentric column; 43. Air guide pipe; 44. Check valve; 45. Turntable; 451. Negative pressure chamber; 452. Negative pressure port; 46. Electromagnetic coil; 47. Spring; 5. Replenishing mechanism; 51. Base; 511. Positioning port; 512. Limit groove; 52. Ventilation chamber; 53. Sealing body; 531. Slide groove; 54. Boss; 541. Swing rod; 542. Friction strip; 55. Screw; 551. Screw gear; 56. Electric push rod; 6. Aluminum foil roll; 61. Aluminum foil layer; 7. Medicine bottle. Detailed implementation manners

[0022] Detailed embodiment 1: Please refer to Figures 1-9 A medicine bottle sealing device, comprising a frame 1, two symmetrically distributed reciprocating conveyor belts 2 arranged in the frame 1, and a plurality of clamping units 4 uniformly installed between the two reciprocating conveyor belts 2; the clamping unit 4 includes a moving frame 42 driven by the reciprocating conveyor belt 2, a slide seat 41 longitudinally sliding on the moving frame 42, a turntable 45 rotatably connected to the lower end of the slide seat 41 for adsorbing the aluminum foil layer 61, and an electromagnetic coil 46 fixedly connected in the slide seat 41; a feeding table 15 for placing the medicine bottle 7 is arranged in the frame 1 between the two reciprocating conveyor belts 2.

[0023] On both sides of the feeding table 15 on the rack 1, there are respectively provided feeding conveyor belts 3 for driving the medicine bottles 7 to move; the feeding conveyor belts 3 are in contact with the outer walls of the medicine bottles 7; the length direction of the feeding conveyor belts 3 is parallel to the advancing direction of the medicine bottles 7; the moving speeds of the two feeding conveyor belts 3 are different, and the moving directions are opposite.

[0024] On the feeding conveyor belt 3, there are provided feeding belts 31 in contact with the outer walls of the medicine bottles 7 and feeding conveyor belt motors for driving the feeding belts 31 to move.

[0025] Since the moving speeds of the two feeding conveyor belts 3 are different, after the two feeding conveyor belts 3 clamp the medicine bottle 7, the speed on one side of the medicine bottle 7 is fast and the speed on the other side is slow. Furthermore, the medicine bottle 7 will rotate circumferentially during the advancing process.

[0026] On each of the feeding conveyor belts 3, there are provided synchronizing racks 33 perpendicular to the advancing direction of the medicine bottles 7; inside the rack 1, there is a synchronizing gear 34 rotatably connected and meshing with the two synchronizing racks 33 simultaneously; the two synchronizing racks 33 are symmetrically distributed about the axis of the synchronizing gear 34, and thus the moving directions of the two synchronizing racks 33 are opposite; inside the rack 1, there is a synchronizing motor 35 fixedly connected for driving the synchronizing gear 34 to rotate.

[0027] When the synchronizing motor 35 drives the synchronizing gear 34 to rotate, the synchronizing gear 34 will drive the two synchronizing racks 33 to move in opposite directions, and the two feeding conveyor belts 3 will approach or move away from each other, adjusting the distance between the two feeding conveyor belts 3 to adapt to medicine bottles 7 with different diameters.

[0028] The reciprocating conveyor belt 2 includes a vertical reset section 25, a downward pressing section 23, a horizontal supplementary section 22, and a sealing section 24; the reciprocating conveyor belt 2 will drive the clamping unit 4 to sequentially pass through the supplementary section 22, the downward pressing section 23, the sealing section 24, and the reset section 25; when the clamping unit 4 moves along the sealing section 24, the clamping unit 4 is in contact with the medicine bottle 7 and advances synchronously with the medicine bottle 7.

[0029] The clamping unit 4 further includes a spring 47 provided between the sliding seat 41 and the moving frame 42 for driving the sliding seat 41 to move downward; on the feeding conveyor belt 3, there is a guide rod 32 provided below the downward pressing section 23 and in contact with the outer wall of the medicine bottle 7; the feeding conveyor belt 3 is not directly opposite to the downward pressing section 23; when the clamping unit 4 moves downward along the downward pressing section 23, one sliding seat 41 will be in contact with the upper end of the medicine bottle 7 and the spring 47 will contract; when the clamping unit 4 moves from the downward pressing section 23 to the sealing section 24, the clamping unit 4 will drive the medicine bottle 7 at the lower end to move synchronously between the two feeding conveyor belts 3.

[0030] When the clamping unit 4 enters the pressing section 23 from the replenishing section 22, the slide block 41 is located at the lower limit position under the action of the spring 47. As the clamping unit 4 moves downward along the pressing section 23, the turntable 45 will abut against the upper end of the medicine bottle 7. Then, as the clamping unit 4 continues to move downward, the moving frame 42 moves downward, the slide block 41 does not move, and the spring 47 contracts.

[0031] The upper end of the feeding table 15 is evenly and rotatably connected with rolling balls 12.

[0032] The medicine bottle 7 moves on the upper ends of the respective rolling balls 12, reducing the frictional force between the medicine bottle 7 and the feeding table 15.

[0033] The reciprocating conveyor belt 2 is evenly provided with transport seats 21; a rotating column 421 rotatably connected with the transport seats 21 is arranged on the slide block 41; an eccentric column 422 is arranged at an eccentric position on the rotating column 421; a positioning groove 11 slidably connected with the eccentric column 422 is arranged on the machine frame 1; when the reciprocating conveyor belt 2 operates, the slide block 41 is always horizontal.

[0034] A replenishing mechanism 5 is arranged on the machine frame 1; the replenishing mechanism 5 includes a base 51 arranged on the machine frame 1 and located below the replenishing section 22, a boss 54 longitudinally slidable in the base 51, and a screw rod 55 rotatably connected in the base 51 to drive the boss 54 to move; an aluminum foil roll 6 is installed on the base 51; aluminum foil layers 61 for being installed on the medicine bottle 7 are evenly distributed on the aluminum foil roll 6; a pressing plate 13 for forcing the slide block 41 on the replenishing section 22 to stay at the lower limit position is arranged on the machine frame 1; an electric push rod 56 for driving the base 51 to slide along the moving direction of the replenishing section 22 is fixedly connected to the machine frame 1; when the screw rod 55 drives the boss 54 to move upward until the aluminum foil layer 61 abuts against the lower end of the turntable 45, the screw rod 55 will drive the boss 54, the aluminum foil layer 61, and the turntable 45 to rotate synchronously, and thus a pulling force is generated between the aluminum foil layer 61 and the aluminum foil roll 6, and then the aluminum foil layer 61 is separated from the aluminum foil roll 6.

[0035] The shape of the upper end opening of the aluminum foil layer 61 is the same as that of the medicine bottle 7. The aluminum foil layer 61 is formed after being cut from the aluminum foil roll 6, and a cutting mark is formed between the aluminum foil layer 61 and the aluminum foil roll 6. At this time, only a certain external force is required to remove the aluminum foil layer 61 from the aluminum foil roll 6.

[0036] An aluminum foil motor for driving the aluminum foil roll 6 to rotate and feed is fixedly connected to the base 51.

[0037] A negative pressure chamber 451 is provided on the turntable 45; a negative pressure port 452 for sucking and holding the aluminum foil layer 61 is provided on the surface of the turntable 45 and is communicated with the negative pressure chamber 451; a guide air pipe 43 is fixedly connected to the sliding seat 41; the guide air pipe 43 is communicated with the negative pressure chamber 451 and rotates relatively sealed; a one-way valve 44 that conducts unidirectionally from the negative pressure chamber 451 to the outside is fixedly connected in the guide air pipe 43; an air vent chamber 52 is provided in the base 51; a sealing body 53 is hermetically slidably connected in the air vent chamber 52; a chute 531 perpendicular to the sliding direction of the sealing body 53 is provided on the sealing body 53; a swing rod 541 slidably connected to the chute 531 is provided at an eccentric position on the boss 54; when the base 51 faces a clamping unit 4, the air vent chamber 52 is communicated with the corresponding guide air pipe 43; when the boss 54 rotates, the boss 54 drives the sealing body 53 to slide, forcing the air in the negative pressure chamber 451 to enter the air vent chamber 52.

[0038] A positioning port 511 through which the boss 54 passes is provided at the upper end of the base 51; limiting grooves 512 are uniformly arranged along the circumferential direction on the inner wall of the positioning port 511; friction strips 542 are uniformly arranged on the outer wall of the boss 54; the friction strips 542 cooperate with the limiting grooves 512, and thus the limiting grooves 512 hinder the rotation of the boss 54, so that when the screw 55 rotates, the screw 55 first drives the boss 54 to move upward until the boss 54 abuts against the sliding seat 41 and then the boss 54 cannot continue to move upward, and then the screw 55 drives the boss 54 to rotate synchronously at this time.

[0039] A screw gear 551 is coaxially arranged on the screw 55; a fixed rack 14 meshing with the screw gear 551 is fixedly connected in the frame 1.

[0040] When the electric push rod 56 drives the base 51 to move, the base 51 will move synchronously with a clamping unit 4 on a supplementary section 22, and at this time the fixed rack 14 drives the screw gear 551 to rotate.

[0041] A feed push rod for pushing the medicine bottle 7 to advance along the guide rod 32 is installed on the frame 1.

[0042] During operation, a clamping unit 4 moves on the supplementary section 22 and moves to the upper end of the base 51. At this time, the electric push rod 56 works, driving the base 51 to move, so that the base 51 moves synchronously with the clamping unit 4 above.

[0043] During the movement of the base 51, the fixed rack 14 will force the screw gear 551 to rotate, and then the screw 55 rotates. The screw 55 first drives the boss 54 to move upward, and the boss 54 will push the aluminum foil layer 61 to move upward until the boss 54 abuts the aluminum foil layer 61 against the lower end of the turntable 45.

[0044] Next, the screw rod 55 continues to rotate. At this time, the screw rod 55 will drive the boss 54 to rotate synchronously. Further, the boss 54 will rotate by a specified angle. At the same time, the boss 54 will drive the aluminum foil layer 61 and the turntable 45 to rotate synchronously. The aluminum foil layer 61 rotates relative to the aluminum foil roll 6, forcing the aluminum foil layer 61 to separate from the aluminum foil roll 6.

[0045] At the same time, as the boss 54 rotates, the swing rod 541 drives the sealing body 53 to slide, the space in the ventilation cavity 52 increases, and the pressure decreases. Further, the air in the negative pressure cavity 451 is forced to enter the ventilation cavity 52 through the air guide pipe 43 and the one-way valve 44. The pressure in the negative pressure cavity 451 will also decrease, causing the aluminum foil layer 61 to adhere to the negative pressure port 452 under the action of the pressure. Thus, the process of transferring the aluminum foil layer 61 to the clamping unit 4 is completed.

[0046] Next, the electric push rod 56 drives the base 51 to reset, and supplies the aluminum foil layer 61 to the next clamping unit 4. At the same time, the aluminum foil roll 6 rotates, and the next aluminum foil layer 61 moves to the upper end of the boss 54. The reciprocating conveyor belt 2 continues to move, driving the clamping unit 4 to move from the replenishment section 22 to the pressing section 23.

[0047] The clamping unit 4 entering the pressing section 23 will be aligned with a medicine bottle 7. As the clamping unit 4 moves downward along the pressing section 23, the aluminum foil layer 61 at the lower end of the turntable 45 will abut against the upper end of the medicine bottle 7. Then, the sliding seat 41 stops moving downward, and the moving frame 42 moves downward, and the spring 47 stores energy.

[0048] As the reciprocating conveyor belt 2 continues to operate, the clamping unit 4 will enter the sealing section 24 from the pressing section 23. Under the action of friction, the clamping unit 4 will drive the medicine bottle 7 below to move forward together, so that the medicine bottle 7 advances between the two feeding conveyor belts 3.

[0049] After the medicine bottle 7 moves between the two feeding conveyor belts 3, as the two feeding conveyor belts 3 operate in opposite directions and at different speeds, the medicine bottle 7 will rotate and advance synchronously with the clamping unit 4 on the reciprocating conveyor belt 2. As the medicine bottle 7 rotates, the aluminum foil layer 61 and the turntable 45 at the upper end of the medicine bottle 7 will rotate synchronously under the action of friction. At this time, the electromagnetic coil 46 works to heat the aluminum foil layer 61. As the aluminum foil layer 61 and the medicine bottle 7 rotate, the electromagnetic coil 46 uniformly heats each position on the aluminum foil layer 61. The aluminum foil layer 61 and the medicine bottle 7 are gradually bonded together.

[0050] When the clamping unit 4 enters the reset section 25 from the sealing section 24, the clamping unit 4 moves upward and gradually separates from the medicine bottle 7. At this time, since the aluminum foil layer 61 and the medicine bottle 7 are bonded together, the aluminum foil layer 61 will be forced to separate from the negative pressure port 452, and the negative pressure cavity 451 returns to the standard air pressure.

[0051] So far is a complete process of a clamping unit 4 sealing a medicine bottle 7 through an aluminum foil layer 61. Repeat the above process, and each clamping unit 4 in the equipment continuously seals the medicine bottle 7.

Claims

1. A medicine bottle sealing device, characterized in that: The invention comprises a frame (1), two symmetrically distributed reciprocating conveyor belts (2) arranged in the frame (1), and a plurality of clamping units (4) evenly installed between the two reciprocating conveyor belts (2); the clamping unit (4) comprises a moving frame (42) driven by the reciprocating conveyor belt (2), a slide seat (41) sliding longitudinally on the moving frame (42), a turntable (45) rotatably connected to the lower end of the slide seat (41) for adsorbing an aluminum foil layer (61), and an electromagnetic coil (46) fixedly connected to the slide seat (41); a feeding table (15) for placing medicine bottles (7) is arranged between the two reciprocating conveyor belts (2) in the frame (1).

2. A medicine bottle sealing device according to claim 1, characterized in that: The frame (1) is provided with feed conveyor belts (3) on both sides of the feed table (15) for driving the medicine bottles (7) to move; the feed conveyor belts (3) are in contact with the outer walls of the medicine bottles (7); the length direction of the feed conveyor belts (3) is parallel to the forward direction of the medicine bottles (7); the two feed conveyor belts (3) have different movement speeds and move in opposite directions.

3. A medicine bottle sealing device according to claim 2, characterized in that: Each of the feed conveyor belts (3) is provided with a synchronous rack (33) perpendicular to the advancing direction of the medicine bottle (7); a synchronous gear (34) is rotatably connected in the frame (1) and is meshed with the two synchronous racks (33); the two synchronous racks (33) are centrally symmetrically distributed along the axis of the synchronous gear (34), so that the movement directions of the two synchronous racks (33) are opposite; and a synchronous motor (35) is fixedly connected in the frame (1) and drives the synchronous gear (34) to rotate.

4. The medicine bottle sealing device according to claim 2, characterized in that: The reciprocating conveyor belt (2) comprises a vertically arranged reset section (25) and a downward pressing section (23), and a horizontally arranged supplementing section (22) and a sealing section (24); the reciprocating conveyor belt (2) drives the clamping unit (4) to pass through the supplementing section (22), the downward pressing section (23), the sealing section (24), and the reset section (25) in sequence; when the clamping unit (4) moves along the sealing section (24), the clamping unit (4) abuts against the medicine bottle (7) and moves forward synchronously with the medicine bottle (7).

5. The medicine bottle sealing device according to claim 4, characterized in that: The clamping unit (4) further comprises a spring (47) arranged between the slide (41) and the movable frame (42) for driving the slide (41) to move downward; a guide rod (32) is arranged on the feed conveyor belt (3) below the pressing section (23) and abuts against the outer wall of the medicine bottle (7); the feed conveyor belt (3) is not directly opposite to the pressing section (23); when the clamping unit (4) moves downward along the pressing section (23), a slide (41) will abut against the upper end of the medicine bottle (7), and the spring (47) will contract; when the clamping unit (4) moves from the pressing section (23) to the sealing section (24), the clamping unit (4) will drive the medicine bottle (7) at the lower end to move synchronously between the two feed conveyor belts (3).

6. The medicine bottle sealing device according to claim 4, characterized in that: The reciprocating conveyor belt (2) is evenly provided with transport seats (21); the slide seat (41) is provided with a rotating column (421) rotatably connected to the transport seat (21); an eccentric column (422) is provided at an eccentric position on the rotating column (421); the frame (1) is provided with a positioning groove (11) slidably connected to the eccentric column (422); when the reciprocating conveyor belt (2) is in operation, the slide seat (41) is always horizontal.

7. The medicine bottle sealing device according to claim 4, characterized in that: The frame (1) is provided with a replenishing mechanism (5); the replenishing mechanism (5) comprises a base (51) provided on the frame (1) and located below the replenishing section (22), a boss (54) longitudinally sliding in the base (51), and a screw (55) rotatably connected to the base (51) and driving the boss (54) to move; an aluminum foil roll (6) is mounted on the base (51); an aluminum foil layer (61) for mounting on a medicine bottle (7) is evenly distributed on the aluminum foil roll (6); The frame (1) is provided with a pressing plate (13) for forcing the slide seat (41) on the supplementary section (22) to remain at a lower limit position; the frame (1) is fixedly connected with an electric push rod (56) for driving the base (51) to slide along the movement direction of the supplementary section (22); when the screw rod (55) drives the boss (54) to move upward until the aluminum foil layer (61) abuts against the lower end of the turntable (45), the screw rod (55) drives the boss (54), the aluminum foil layer (61) and the turntable (45) to rotate synchronously.

8. The medicine bottle sealing device according to claim 7, characterized in that: The rotating disk (45) is provided with a negative pressure cavity (451); the surface of the rotating disk (45) is provided with a negative pressure port (452) which is in communication with the negative pressure cavity (451) and is used to suck the aluminum foil layer (61); the sliding seat (41) is fixedly connected with an air guide tube (43); the air guide tube (43) is in communication with the negative pressure cavity (451) and rotates relatively sealed; the air guide tube (43) is fixedly connected with a one-way valve (44) which is unidirectionally conducted from the negative pressure cavity (451) to the outside; the base (51) is provided with a ventilation cavity (52); the ventilation cavity (52) ) is sealed and slidably connected to a sealing body (53); the sealing body (53) is provided with a slide groove (531) perpendicular to the sliding direction of the sealing body (53); an eccentric position on the boss (54) is provided with a rocker rod (541) slidably connected to the slide groove (531); when the base (51) is directly opposite to a clamping unit (4), the ventilation cavity (52) is connected to the corresponding air guide tube (43); when the boss (54) rotates, the boss (54) drives the sealing body (53) to slide, forcing the air in the negative pressure cavity (451) to enter the ventilation cavity (52).

9. The medicine bottle sealing device according to claim 8, characterized in that: The upper end of the base (51) is provided with a positioning opening (511) for the boss (54) to pass through; the inner wall of the positioning opening (511) is evenly provided with limiting grooves (512) along the circumferential direction; the outer wall of the boss (54) is evenly provided with friction strips (542); the friction strips (542) cooperate with the limiting grooves (512), so that the limiting grooves (512) hinder the rotation of the boss (54).

10. The medicine bottle sealing device according to claim 8, characterized in that: The screw (55) is coaxially provided with a screw gear (551); and a fixed rack (14) meshing with the screw gear (551) is fixedly connected inside the frame (1).

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