Oral liquid negative pressure filling capping machine

Abstract

The utility model relates to an oral liquid negative pressure filling and capping machine which comprises a rack, a conveying mechanism, a filling mechanism and a capping mechanism, the rack is rotationally connected with a first shifting wheel and a second shifting wheel, and the conveying mechanism is used for sequentially conveying oral liquid bottles to the first shifting wheel and the second shifting wheel; the filling mechanism is used for filling the oral liquid bottles conveyed to the first shifting wheel, the capping mechanism is used for capping the oral liquid bottles conveyed to the second shifting wheel, and when the oral liquid bottles are conveyed into the first shifting wheel, the driving assembly is used for driving the abutting block to abut against the openings of the oral liquid bottles, and the vacuum head and the filling needle head are moved into the oral liquid bottles; a vacuum device extracts air in an inner cavity of the bottle, so that low vacuum is formed in the inner cavity of the bottle, liquid medicine enters the inner cavity of the bottle under the action of atmospheric pressure, filling is stopped when the liquid level is in contact with a vacuum head, a liquid filling needle automatically rises to leave the bottle opening, and the whole filling process is completed. When no bottle exists, the liquid filling needle is communicated with the atmosphere, so that filling is not carried out when no bottle exists.

Description

Technical Field

[0001] This utility model relates to the field of oral liquid production technology, and in particular to an oral liquid negative pressure filling and capping machine. Background Technology

[0002] An oral liquid filling and capping machine is a specialized piece of equipment used in the production of oral liquids to complete the filling and capping processes. It has a filling function: accurately filling a measured quantity of oral liquid into bottles, and can adapt to different capacity specifications by adjusting relevant parameters. It also has a capping function: after filling, it quickly and precisely seals the cap onto the bottle opening, ensuring a good seal and preventing liquid leakage and the entry of external impurities.

[0003] Utility model CN222042641U discloses an oral liquid filling mechanism. This filling mechanism aims to solve the technical problems of existing filling devices, which have relatively limited functions and are inconvenient for pre-cleaning, airtightness testing, and air removal of oral liquid bottles before filling. It includes a baffle, with a rotary table driven by a rotary motor rotatably connected to the inner wall of the baffle. The rotary table has a set of bottle slots arranged in a circumferential array inside. A set of heating rods is installed inside the rotary table corresponding to the position of each bottle slot. A driven rotating disk is rotatably connected to the bottom surface of each bottle slot. A bracket is fixedly installed on the surface of the baffle.

[0004] The filling mechanism in the above technical solution can only fill one oral liquid bottle at a time, resulting in low production efficiency. Utility Model Content

[0005] To improve the production efficiency of oral liquid filling, this application provides an oral liquid negative pressure filling and capping machine.

[0006] The oral liquid negative pressure filling and capping machine provided in this application adopts the following technical solution:

[0007] An oral liquid negative pressure filling and capping machine includes a frame, a conveying mechanism, a filling mechanism, and a capping mechanism. A first dial wheel and a second dial wheel are rotatably connected to the frame. The conveying mechanism sequentially conveys oral liquid bottles to the first and second dial wheels. The filling mechanism fills the oral liquid bottles conveyed to the first dial wheel, and the capping mechanism caps the oral liquid bottles conveyed to the second dial wheel. The filling mechanism includes a filling wheel, multiple abutment blocks, and a driving component. Multiple first workstation slots are formed on the circumferential side of the first dial wheel. The filling wheel is coaxial and... Fixedly connected to the first dial wheel, the plurality of abutment blocks correspond to the plurality of first work station slots respectively. The plurality of abutment blocks are slidably connected to the filling wheel. The plurality of abutment blocks are respectively provided with a vacuum head connected to a vacuum device and a filling needle connected to a medicine storage tank. The driving component is used to drive the sliding of the plurality of abutment blocks respectively. When the oral liquid bottle is moved into the first work station slot of the first dial wheel, the abutment block corresponding to the first work station slot slides to abut against the bottle mouth of the oral liquid bottle to seal the inside of the bottle, and the vacuum head and filling needle on the abutment block move into the oral liquid bottle.

[0008] By adopting the above technical solution, when the oral liquid bottle is conveyed to the first feeder wheel, the drive assembly drives the contact block to abut against the bottle opening, and moves the vacuum head and filling needle into the bottle, sealing the opening to form a closed loop. The vacuum equipment evacuates the air from the bottle cavity, creating a low vacuum. The liquid enters the bottle cavity under atmospheric pressure. Filling stops when the liquid surface contacts the vacuum head, and the filling needle automatically rises away from the bottle opening, completing the entire filling process. When there is no bottle, filling does not occur because the filling needle is open to the atmosphere. Furthermore, by setting up a filling wheel and multiple contact blocks, and rotating the filling wheel together with the first feeder wheel, multiple oral liquid bottles on the first feeder wheel can be filled simultaneously, improving the production efficiency of oral liquid filling. The filled oral liquid bottles are conveyed to the second feeder wheel by a conveying mechanism for capping by a capping system, further improving the capping efficiency of the oral liquid.

[0009] Preferably, the driving component includes a guide seat and a plurality of springs. The guide seat is fixedly connected to the frame and is arc-shaped. The guide seat is tapered from the middle section to both ends of the arc direction. The guide seat is located on the moving path of a plurality of abutment blocks. The plurality of springs correspond to a plurality of abutment blocks respectively. The plurality of springs are disposed on the corresponding abutment blocks and always drive the corresponding abutment blocks to move away from the first dial.

[0010] By adopting the above technical solution, when the filling wheel rotates to the point where the abutting block abuts against the guide seat, the abutting block moves along the surface of the guide seat and moves relative to the first dial wheel towards the first dial wheel. When there is an oral liquid bottle in the corresponding first groove, the abutting block abuts against the oral liquid bottle, and at this time the spring deforms. When the abutting block leaves the range of the guide seat, the spring returns to its original position, causing the abutting block to move relative to the first dial wheel towards the side away from the first dial wheel, and the abutting block disengages from the oral liquid bottle.

[0011] Preferably, a plurality of abutment pads are slidably connected on the guide seat, and two adjacent abutment pads are fixedly connected to each other. When any abutment block moves into the range of the guide seat, the abutment block abuts against any abutment pad.

[0012] By adopting the above technical solution, by setting an abutment pad on the guide seat, when the abutment block moves into the range of the guide seat, the abutment block abuts against the abutment pad. Through the friction between the abutment block and the abutment pad, the abutment pad slides on the guide seat, reducing the possibility of friction damage to the abutment block or the guide seat caused by direct contact between the abutment block and the guide seat.

[0013] Preferably, a hollow shaft with an infusion chamber and a vacuum chamber is coaxially and fixedly connected to the filling wheel. Each of the multiple filling needles is provided with an infusion tube, which is connected to the infusion chamber. Each of the multiple vacuum heads is provided with a vacuum tube, which is connected to the vacuum chamber.

[0014] By adopting the above technical solution, when the filling wheel rotates, the hollow shaft rotates together, thereby causing both ends of the infusion tube to rotate together. This reduces the possibility of the infusion tube connected to the filling needle getting tangled, thus keeping the infusion tube unobstructed. At the same time, it reduces the possibility of the vacuum tube connected to the vacuum head getting tangled, thus keeping the vacuum tube unobstructed. Furthermore, it allows the liquid medicine in multiple filling needles to be output from the same hollow shaft, ensuring that the liquid medicine produced in the same time period remains consistent.

[0015] Preferably, the conveying mechanism includes a bottle inlet auger and a plurality of transition wheels. The bottle inlet auger is rotatably connected to the frame along an axis perpendicular to the first wheel. The plurality of transition wheels are rotatably connected to the frame along the rotation direction of the first wheel. The circumferential sides of the plurality of transition wheels are provided with transition grooves. The plurality of transition wheels are located between the bottle inlet auger and the first wheel, between the first wheel and the second wheel, and after the second wheel.

[0016] By adopting the above technical solution, the oral liquid bottle is transported in a straight line using an inlet auger and through the transitional transport of several transitional wheels.

[0017] Preferably, the capping mechanism includes a cylinder and a cap feeding device. The cylinder is fixedly connected to the frame, and a rubber block is fixedly connected to one end of the piston rod of the cylinder. The frame is provided with a cap storage hopper. When the oral liquid bottle moves to the bottom of the cylinder, the cap feeding device transports the cap to the oral liquid bottle, and the rubber block moves toward the oral liquid bottle until the cap is stuck onto the oral liquid bottle.

[0018] By adopting the above technical solution, the filled bottles enter the capping station through the transition wheel. The cap feeding device transports the caps to the oral liquid bottles. As the piston rod of the cylinder moves, the rubber block moves towards the side of the capped oral liquid bottle, pressing the cap onto the oral liquid bottle, thereby completing the capping action.

[0019] Preferably, the lid-feeding device includes a lifting belt and a lid-dropping track. The lifting belt is driven and connected inside the lid-storage hopper, and the lid-dropping track is fixedly connected to the frame. The two ends of the lid-dropping track in the length direction are located below the cylinder and below the lifting belt, respectively.

[0020] By adopting the above technical solution, the bottle caps in the cap storage hopper are lifted upwards by a lifting belt, and the baffles on the lifting belt automatically remove the caps according to their center of gravity. With the cap opening facing outwards, the lifting belt carries the bottle caps from the cap storage hopper to the cap dropping track, where the caps slide along the track onto the oral liquid bottles on the second dial.

[0021] The main technical effects of this utility model are reflected in the following aspects:

[0022] 1. This utility model, through the setting of a filling mechanism, when the oral liquid bottle is conveyed to the first dial wheel, the drive component drives the abutment block to abut against the mouth of the oral liquid bottle, and moves the vacuum head and filling needle into the oral liquid bottle, sealing the bottle mouth to form a closed loop. The vacuum equipment evacuates the air inside the bottle, creating a low vacuum inside the bottle. The liquid enters the bottle cavity under atmospheric pressure. When the liquid surface contacts the vacuum head, filling stops, and the filling needle automatically rises away from the bottle mouth, completing the entire filling process. When there is no bottle, since the filling needle is open to the atmosphere, no filling is performed. Furthermore, by setting a filling wheel and multiple abutment blocks, and making the filling wheel rotate together with the first dial wheel, multiple oral liquid bottles on the first dial wheel can be filled simultaneously, improving the production efficiency of oral liquid filling. The filled oral liquid bottles are conveyed to the second dial wheel through a conveying mechanism for capping by a capping system, thereby improving the capping efficiency of the oral liquid.

[0023] 2. This utility model, by setting a driving component, when the filling wheel rotates to the point where the abutting block abuts against the guide seat, the abutting block moves along the surface of the guide seat while simultaneously moving relative to the first dial wheel towards the side of the first dial wheel. When there is an oral liquid bottle in the corresponding first groove, the abutting block abuts against the oral liquid bottle, and at this time the spring deforms. When the abutting block leaves the range of the guide seat, the spring returns to its original position, causing the abutting block to move relative to the first dial wheel towards the side away from the first dial wheel, and the abutting block disengages from the oral liquid bottle.

[0024] 3. This utility model sets up an abutment pad on the guide seat. When the abutment block moves into the range of the guide seat, it abuts against the abutment pad. The friction between the abutment block and the abutment pad causes the abutment pad to slide on the guide seat, reducing the possibility of friction damage to the abutment block or the guide seat due to direct contact between the abutment block and the guide seat. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0026] Figure 2 This is a schematic diagram of the filling mechanism structure according to an embodiment of this application.

[0027] Figure 3 This is a schematic diagram of the guide block structure in an embodiment of this application.

[0028] Figure 4 This is a schematic diagram of the hollow shaft structure according to an embodiment of this application.

[0029] Figure 5 This is a schematic diagram of the capping mechanism in an embodiment of this application.

[0030] Figure 6 This is a schematic diagram of the filling wheel structure according to an embodiment of this application.

[0031] Explanation of reference numerals in the attached drawings: 1. Frame; 11. First dial wheel; 111. First work station slot; 12. Second dial wheel; 13. Cap storage hopper; 2. Conveying mechanism; 21. Bottle inlet auger; 22. Transition dial wheel; 23. Transition slot; 3. Filling mechanism; 31. Filling wheel; 311. Hollow shaft; 312. Vacuum chamber; 313. Infusion chamber; 32. Abutment block; 321. Vacuum head; 322. Filling needle; 323. Infusion tube; 324. Vacuum tube; 33. Driving component; 331. Guide seat; 332. Spring; 333. Abutment pad; 4. Capping mechanism; 41. Cylinder; 42. Rubber block; 43. Cap feeding device; 431. Lifting belt; 432. Cap dropping track. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-6This application will be described in further detail to make the technical solution of this application easier to understand and master.

[0033] This application discloses an oral liquid negative pressure filling and capping machine.

[0034] Reference Figure 1 and Figure 6 This embodiment of an oral liquid negative pressure filling and capping machine includes a frame 1, a conveying mechanism 2, a filling mechanism 3, and a capping mechanism 4. A first dial wheel 11 and a second dial wheel 12 are rotatably connected to the frame 1. The conveying mechanism 2 is used to sequentially convey oral liquid bottles to the first dial wheel 11 and the second dial wheel 12. The filling mechanism 3 fills the oral liquid bottles conveyed to the first dial wheel 11. The capping mechanism 4 caps the oral liquid bottles conveyed to the second dial wheel 12.

[0035] Reference Figure 2 and Figure 3 The filling mechanism 3 includes a filling wheel 31, multiple abutment blocks 32, and a driving component 33. Multiple first work station slots 111 are formed on the circumferential side of the first dial wheel 11. The filling wheel 31 is coaxially and fixedly connected to the first dial wheel 11. The multiple abutment blocks 32 correspond to the multiple first work station slots 111 respectively, and are slidably connected to the filling wheel 31. The multiple abutment blocks 32 are evenly distributed around the central axis of the filling wheel 31. The device is equipped with a vacuum head 321 connected to a vacuum device and a filling needle 322 connected to a medicine storage tank. The driving component 33 is used to drive the sliding of multiple abutment blocks 32. When the oral liquid bottle is moved into the first station slot 111 of the first dial 11, the abutment block 32 corresponding to the first station slot 111 slides to abut against the bottle mouth of the oral liquid bottle to seal the inside of the bottle, and the vacuum head 321 and the filling needle 322 on the abutment block 32 move into the oral liquid bottle.

[0036] Reference Figure 3 and Figure 4A hollow shaft 311 with an infusion chamber 313 and a vacuum chamber 312 is coaxially and fixedly connected to the filling wheel 31. The infusion chamber 313 is located at the upper end of the infusion chamber 313. Multiple filling needles 322 are respectively fixedly connected to infusion tubes 323, and the multiple infusion tubes 323 are respectively connected to the infusion chamber 313. Multiple vacuum heads 321 are respectively fixedly connected to vacuum tubes 324, and the multiple vacuum tubes 324 are respectively connected to the vacuum chamber 312. When the filling wheel 31 rotates, the hollow shaft 311 rotates together, causing both ends of the infusion tube 323 to rotate together. This reduces the possibility of the infusion tube 323 tangling with the filling needle 322, thus keeping the infusion tube 323 unobstructed. At the same time, it reduces the possibility of the vacuum tube 324 tangling with the vacuum head 321, thus keeping the vacuum tube 324 unobstructed. Furthermore, it allows the liquid medicine in multiple filling needles 322 to be output from the same hollow shaft 311, ensuring that the liquid medicine produced in the same time period is consistent.

[0037] Reference Figure 1 and Figure 2 When the oral liquid bottle is conveyed to the first dial 11, the drive assembly drives the abutment block 32 to abut against the bottle opening, and moves the vacuum head 321 and filling needle 322 into the bottle, sealing the bottle opening to form a closed loop. The vacuum equipment evacuates the air from the bottle cavity, creating a low vacuum. The liquid enters the bottle cavity under atmospheric pressure. Filling stops when the liquid surface contacts the vacuum head 321, and the filling needle automatically rises away from the bottle opening, completing the filling process. The machine adopts the dual-chamber low-vacuum negative pressure equal-position filling principle, that is, the air pressure inside the bottle is close to a vacuum using the air extraction circuit, and the pressure difference is used to force the liquid into the bottle. When there is no bottle, since the filling needle is open to the atmosphere, filling does not occur without a bottle. That is, when there is no bottle, the air extraction circuit cannot be formed and no pressure difference can be generated, thus ensuring that filling does not occur without a bottle. Furthermore, by setting up a filling wheel 31 and multiple abutment blocks 32, and making the filling wheel 31 rotate together with the first dial wheel 11, multiple oral liquid bottles on the first dial wheel 11 can be filled simultaneously, thereby improving the production efficiency of oral liquid filling; the filled oral liquid bottles are transported to the second dial wheel through the conveying mechanism 2 and the capping system is used for capping operations to improve the capping efficiency of oral liquid.

[0038] Reference Figure 2 and Figure 3The driving component 33 includes a guide seat 331 and multiple springs 332. The guide seat 331 is fixedly connected to the frame 1. The guide seat 331 is arc-shaped, and the middle section of the arc direction to both ends of the arc direction of the guide seat 331 is gradually narrowed. The guide seat 331 is located on the moving path of multiple abutment blocks 32. The multiple springs 332 correspond to the multiple abutment blocks 32 respectively. The multiple springs 332 are fixedly connected to the corresponding abutment blocks 32 respectively. The two ends of the multiple springs 332 in the axial direction abut against the abutment blocks 32 and the filling wheel 31 respectively, and always drive the corresponding abutment blocks 32 to move away from the first dial wheel 11. When the filling wheel 31 rotates to the point where the abutting block 32 abuts against the guide seat 331, the abutting block 32 moves along the surface of the guide seat 331 while moving relative to the first dial 11 toward the side of the first dial 11. When there is an oral liquid bottle in the corresponding first slot, the abutting block 32 abuts against the oral liquid bottle, and at this time the spring 332 deforms. When the abutting block 32 leaves the range of the guide seat 331, the spring 332 resets, causing the abutting block 32 to move relative to the first dial 11 toward the side away from the first dial 11, and the abutting block 32 disengages from the oral liquid bottle.

[0039] Reference Figure 2 and Figure 3 A plurality of abutment pads 333 are slidably connected to the guide seat 331. Two adjacent abutment pads 333 are fixedly connected to each other. When any abutment block 32 moves into the range of the guide seat 331, the abutment block 32 abuts against any abutment pad 333. By setting abutment pads 333 on the guide seat 331, when the abutment block 32 moves into the range of the guide seat 331, the abutment block 32 abuts against the abutment pad 333. Through the friction between the abutment block 32 and the abutment pad 333, the abutment pad 333 is driven to slide on the guide seat 331, reducing the possibility of friction damage to the abutment block 32 or the guide seat 331 due to direct contact between the abutment block 32 and the guide seat 331.

[0040] Reference Figure 1 and Figure 6 The conveying mechanism 2 includes an inlet auger 21 and three transition wheels 22. The inlet auger 21 is rotatably connected to the frame 1 along an axis perpendicular to the first wheel 11. The three transition wheels 22 are rotatably connected to the frame 1 along the rotation direction of the first wheel 11. Multiple transition grooves 23 are formed on the circumferential sides of the three transition wheels 22. The three transition wheels 22 are located between the inlet auger 21 and the first wheel 11, between the first wheel 11 and the second wheel 12, and after the second wheel 12, respectively. The oral liquid bottle is conveyed through linear transport by the inlet auger 21 and transitional transport by the transition wheels 22.

[0041] Reference Figure 1 and Figure 5The capping mechanism 4 includes a cylinder 41 and a cap feeding device 43. The cylinder 41 is fixedly connected to the frame 1, and a rubber block 42 is fixedly connected to one end of the piston rod of the cylinder 41. A cap storage hopper 13 is fixedly connected to the frame 1. When the oral liquid bottle moves to below the cylinder 41, the cap feeding device 43 transports the caps in the cap storage hopper 13 to the oral liquid bottle, and the rubber block 42 moves toward the oral liquid bottle until the caps are secured to the bottle. The cap feeding device 43 includes a lifting belt 431 and a cap dropping track 432. The lifting belt 431 is driven and connected inside the cap storage hopper 13, and the cap dropping track 432 is fixedly connected to the frame 1. The two ends of the cap dropping track 432 in the length direction are located below the cylinder 41 and below the lifting belt 431, respectively. The lifting belt 431 lifts the caps in the cap storage hopper 13 upwards, and the baffle on the lifting belt 431 automatically removes the caps according to their center of gravity. With the cap facing outwards, the lifting belt 431 transports the cap from the cap storage hopper 13 to the cap dropping track 432. The cap slides along the cap dropping track 432 onto the oral liquid bottle on the second dial wheel 12. The filled bottle enters the capping station via the transition dial wheel 22. The cap feeding device 43 transports the cap onto the oral liquid bottle. As the piston rod of the cylinder 41 moves, the rubber block 42 moves towards the capped oral liquid bottle, pressing the cap onto the bottle, thus completing the capping action.

[0042] Of course, the above are just typical examples of this application. In addition, this application may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed in this application.

Claims

1. An oral liquid negative pressure filling and capping machine, characterized in that: The system includes a frame (1), a conveying mechanism (2), a filling mechanism (3), and a capping mechanism (4). A first dial wheel (11) and a second dial wheel (12) are rotatably connected to the frame (1). The conveying mechanism (2) sequentially conveys oral liquid bottles to the first dial wheel (11) and the second dial wheel (12). The filling mechanism (3) fills the oral liquid bottles on the first dial wheel (11), and the capping mechanism (4) caps the oral liquid bottles on the second dial wheel (12). The filling mechanism (3) includes a filling wheel (31), multiple abutment blocks (32), and a driving component (33). Multiple first workstation slots (111) are provided on the circumferential side of the first dial wheel (11). The filling wheel (31) is coaxially and fixedly connected to the first dial wheel (12). On a dial (11), multiple abutment blocks (32) correspond to multiple first work station slots (111) respectively. The multiple abutment blocks (32) are slidably connected to the filling wheel (31). The multiple abutment blocks (32) are respectively provided with a vacuum head (321) connected to a vacuum device and a filling needle (322) connected to a medicine storage tank. The driving member (33) is used to drive the sliding of the multiple abutment blocks (32) respectively. When the oral liquid bottle is moved into the first work station slot (111) of the first dial (11), the abutment block (32) corresponding to the first work station slot (111) slides to abut against the bottle mouth of the oral liquid bottle to seal the inside of the bottle. The vacuum head (321) and the filling needle (322) on the abutment block (32) move into the oral liquid bottle. The driving component (33) includes a guide seat (331) and multiple springs (332). The guide seat (331) is fixedly connected to the frame (1). The guide seat (331) is arc-shaped. The middle section of the guide seat (331) in the arc direction is gradually narrowed to both ends in the arc direction. The guide seat (331) is located on the moving path of multiple abutment blocks (32). The multiple springs (332) correspond to the multiple abutment blocks (32) respectively. The multiple springs (332) are arranged on the corresponding abutment blocks (32) and always drive the corresponding abutment blocks (32) to move away from the first dial wheel (11).

2. The oral liquid negative pressure filling and capping machine according to claim 1, characterized in that: Multiple abutment pads (333) are slidably connected on the guide seat (331). Two adjacent abutment pads (333) are fixedly connected to each other. When any abutment block (32) moves into the range of the guide seat (331), the abutment block (32) abuts against any abutment pad (333).

3. The oral liquid negative pressure filling and capping machine according to claim 1, characterized in that: The filling wheel (31) is coaxially and fixedly connected to a hollow shaft (311) with an infusion chamber (313) and a vacuum chamber (312). Each of the multiple filling needles (322) is provided with an infusion tube (323), and the multiple infusion tubes (323) are respectively connected to the infusion chamber (313). Each of the multiple vacuum heads (321) is provided with a vacuum tube (324), and the multiple vacuum tubes (324) are respectively connected to the vacuum chamber (312).

4. The oral liquid negative pressure filling and capping machine according to claim 1, characterized in that: The conveying mechanism (2) includes a bottle inlet auger (21) and several transition wheels (22). The bottle inlet auger (21) is rotatably connected to the frame (1) along an axis perpendicular to the first wheel (11). The several transition wheels (22) are rotatably connected to the frame (1) along the rotation direction of the first wheel (11). The several transition wheels (22) are provided with transition grooves (23) on their circumferential sides. The several transition wheels (22) are located between the bottle inlet auger (21) and the first wheel (11), between the first wheel (11) and the second wheel (12), and after the second wheel (12).

5. The oral liquid negative pressure filling and capping machine according to claim 1, characterized in that: The capping mechanism (4) includes a cylinder (41) and a cap feeding device (43). The cylinder (41) is fixedly connected to the frame (1). A rubber block (42) is fixedly connected to one end of the piston rod of the cylinder (41). A cap storage hopper (13) is provided on the frame (1). When the oral liquid bottle moves to the bottom of the cylinder (41), the cap feeding device (43) transports the bottle cap in the cap storage hopper (13) to the oral liquid bottle. The rubber block (42) moves toward the oral liquid bottle until the bottle cap is stuck onto the oral liquid bottle.

6. The oral liquid negative pressure filling and capping machine according to claim 5, characterized in that: The lid feeding device (43) includes a lifting belt (431) and a lid dropping track (432). The lifting belt (431) is connected to the lid storage hopper (13) and the lid dropping track (432) is fixedly connected to the frame (1). The two ends of the lid dropping track (432) in the length direction are located below the cylinder (41) of the cylinder (41) and below the lifting belt (431), respectively.

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