Bag cutting mechanism of automatic powder packaging machine

Abstract

The utility model relates to the technical field of powder bagged medicine packaging equipment, in particular to a bag cutting mechanism of an automatic powder packaging machine, which comprises a mounting frame, two cutters and a driving component, the mounting frame is arranged on the automatic packaging machine through a connecting plate and positioned below a sealing workpiece, the two cutters are arranged in the mounting frame in a relative sliding manner, and the driving component is arranged on the mounting frame. The driving assembly is arranged on the mounting frame and used for driving the two cutters to be close to or away from each other, and the mounting frame is further provided with a clamping assembly for clamping the packaging bags. When the packaging bag is sealed, the sealed packaging bag moves downwards to the position between the two cutters, the driving assembly is started to drive the two cutters to move relatively, meanwhile, the clamping assembly is started to clamp the packaging bag, and therefore the stability of the packaging bag during cutting is improved, and the bag cutting effect of bagged powder medicine is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of powder bagged medicine packaging equipment, and in particular to a bag cutting mechanism for an automatic powder packaging machine. Background Technology

[0002] Powdered medicines refer to medicines that are packaged in bags and are in the form of powder or granules, such as cold granules and glucose powder. In the production process of such medicines, vertical fully automatic powder packaging machines are usually used for packaging, which can complete the bag making, metering, filling, sealing and bag cutting in sequence.

[0003] The bag-cutting process of a typical automatic powder packaging machine consists of blades and a drive assembly. There are usually two blades. The two blades are relatively close to each other to cut the packaging bag under the action of the drive assembly, or one blade remains stationary while the other blade rotates and moves closer to the stationary blade under the action of the drive assembly, thereby achieving the cutting of the packaging bag.

[0004] In related technologies, please refer to Chinese utility model patent with authorization announcement number CN209305989U, which discloses a bag cutting mechanism for an automatic powder packaging machine. The mechanism includes a lower blade holder on the worktable of the automatic powder packaging machine, a fixed blade fixed on the lower blade holder, and a movable blade that cooperates with the fixed blade. An adjustment structure for adjusting the height of the fixed blade is provided between the fixed blade and the lower blade holder. A rotating shaft is fixed on one end of the lower blade holder, a bushing is sleeved on the rotating shaft, and a bracket is fixed on the bushing. The movable blade is fixed on the bracket through a connecting structure. A drive structure for driving the rotating shaft to rotate back and forth along its central axis is provided on the worktable.

[0005] During use, the sealed packaging bag moves vertically downwards between the fixed blade and the moving blade. The drive mechanism is activated, causing the moving blade to rotate toward the fixed blade. The fixed blade and the moving blade work together to cut the packaging bag. However, the packaging bag is suspended in the air during cutting. When the moving blade rotates to engage with the fixed blade, the packaging bag is prone to shaking, resulting in uneven cutting of the bag opening and reducing the cutting effect of bagged powder medicines. Utility Model Content

[0006] To improve the bag-cutting effect of bagged powder medicines, this utility model provides a bag-cutting mechanism for an automatic powder packaging machine.

[0007] The automatic powder packaging machine bag cutting mechanism provided in this application adopts the following technical solution:

[0008] A bag-cutting mechanism for an automatic powder packaging machine includes a mounting frame, cutters, and a drive assembly. The mounting frame is mounted on the automatic packaging machine via a connecting plate and is located below the sealing workpiece. Two cutters are provided and are slidably disposed relative to each other within the mounting frame. The drive assembly is mounted on the mounting frame and is used to drive the two cutters to move closer or further apart. The mounting frame is also provided with a clamping assembly for holding the packaging bag.

[0009] By adopting the above technical solution, the sealed packaging bag moves down between the two cutters, the drive component is activated to drive the two cutters to move relative to each other, and at the same time the clamping component is activated to clamp the packaging bag, thereby improving the stability of the packaging bag during cutting and thus improving the cutting effect of bagged powder medicines.

[0010] Optionally, two clamping assemblies are provided opposite to each other and correspond one-to-one with the cutter. The clamping assembly includes:

[0011] Mounting plate, which is horizontally slidably disposed in mounting frame, two mounting plates are arranged opposite to each other, a cutter is disposed on the mounting plate, a cutting space is formed between the two cutters, and a driving component is connected to the mounting plate and used to drive the mounting plate to move;

[0012] Lower clamping plate, which is disposed on the mounting plate and extends horizontally toward the cutting space;

[0013] The upper clamping plate is mounted on the mounting plate and extends horizontally toward the cutting space. The upper clamping plate and the lower clamping plate are located on the upper and lower sides of the cutter, respectively. The two upper clamping plates cooperate to clamp the packaging bag located above the cutter, and the two lower clamping plates cooperate to clamp the packaging bag located below the cutter.

[0014] By adopting the above technical solution, the drive component moves two mounting plates, thereby causing two sets of upper clamping plates, cutter and lower clamping plates to move relative to each other. The two upper clamping plates clamp the packaging bag located above the cutter, and the two lower clamping plates clamp the packaging bag located below the cutter. The cutter cuts the packaging bag along the seal. By clamping the packaging bag located above and below the cut, the stability of the packaging bag during cutting is improved, thereby improving the cutting effect of bagged powder medicines.

[0015] Optionally, the lower clamping plate, the cutter, and the upper clamping plate can be detachably mounted on the mounting plate via a mounting assembly.

[0016] By adopting the above technical solution and unlocking the installation components, the lower clamping plate, cutter, and upper clamping plate can be inspected, maintained, and replaced, thereby improving convenience.

[0017] Optionally, the installation components include:

[0018] Side pillars, two side pillars are provided, the two side pillars are fixed on the mounting plate and extend vertically upward, and the lower clamping plate and the upper clamping plate are both sleeved on the side pillars;

[0019] The central column is mounted on the mounting plate and extends vertically upward between the two side columns. The lower clamping plate, the cutter, and the upper clamping plate are all sleeved on the side columns. The upper and lower side walls of the cutter abut against the upper clamping plate and the lower clamping plate, respectively. Both the side columns and the central column are threaded columns.

[0020] The locking nuts are provided in three parts, each corresponding to a side post and a center post. The locking nuts are threaded onto the corresponding threaded posts and abut against the upper surface of the upper clamping plate.

[0021] By adopting the above technical solution, during installation, the lower clamping plate is first fitted onto the side column and the middle column, so that the lower clamping plate abuts against the mounting plate. Then, the cutter is fitted onto the middle column, so that the lower surface of the cutter abuts against the lower clamping plate. Next, the upper clamping plate is fitted onto the side column and the middle column, so that the lower surface of the upper clamping plate is lower than the upper surface of the cutter. Then, the locking nut is rotated for positioning. Disassembly and replacement can be performed by reversing the operation, thereby improving the convenience of installation, inspection, maintenance and replacement of the cutter and clamping components.

[0022] Optionally, the lower clamping plate is provided with a mounting groove for mounting a cutter.

[0023] By adopting the above technical solution, the mounting groove improves the convenience of cutting blade installation and positioning.

[0024] Optionally, the driving component includes:

[0025] A lead screw, which is rotatably mounted in a mounting bracket and extends horizontally, has two threaded sections with opposite helical lines, and the two threaded sections correspond one-to-one with the mounting plate, and the mounting plate is threadedly engaged with the corresponding threaded section;

[0026] The guide rod is fixed on the two inner walls of the mounting frame, and the extension direction of the guide rod is parallel to the movement direction of the cutter. The two mounting plates are slidably sleeved on the guide rod.

[0027] A driving component, which is mounted on a mounting frame and whose output end is connected to a lead screw and used to drive the lead screw to rotate.

[0028] By adopting the above technical solution, the drive unit starts and drives the lead screw to rotate, thereby moving the two mounting plates closer or further apart. The guide rod guides and limits the movement direction of the mounting plates, thereby realizing the relative movement of the two sets of upper clamping plates, lower clamping plates and cutter, thus realizing the clamping and cutting of the packaging bag, thereby improving the bag cutting efficiency of bagged powder medicines.

[0029] Optionally, the upper clamping plate has an upper protrusion on its side wall facing the cutting space, and the lower clamping plate has a lower protrusion on its side wall facing the cutting space. Both the upper and lower protrusions are rubber blocks, and the upper and lower protrusions are flush with the end of the cutter facing the cutting space.

[0030] By adopting the above technical solution, both the upper and lower protrusions are elastic rubber blocks, which can not only increase the support effect on the packaging bag, but also, since the cut of the packaging bag is located between two packaging bags that have been filled with medicine, the length of the cross-section of the cut is small. When the cutter continues to move, the elastic rubber block can deform, thereby reducing the adverse effect on the cutting effect of the cutter, thus improving the cutting effect of bagged powder medicines.

[0031] Optionally, the upper clamping plate has an air cavity, and the upper clamping plate is provided with an air duct that communicates with the air cavity. The end of the air duct away from the upper clamping plate is connected to a blower. The upper clamping plate has an air outlet on its side wall facing the cutting space. The air outlet communicates with the air cavity and is located below the upper protrusion.

[0032] By adopting the above technical solution, the blowing device blows air into the air cavity, and the airflow is blown out through the air outlet to sweep the cutting area, thereby causing the cut packaging bag to detach from the cutter and reducing the probability of the heat-sealed packaging bag sticking to the cutter, thus improving the cutting effect of bagged powder medicines.

[0033] In summary, this application includes at least one of the following beneficial technical effects:

[0034] 1. After sealing, the packaging bag moves down between the two cutters. The drive component starts and moves the two cutters relative to each other. At the same time, the clamping component starts to clamp the packaging bag, thereby improving the stability of the packaging bag during cutting and thus improving the cutting effect of bagged powder medicines.

[0035] 2. The drive assembly moves two mounting plates, which in turn moves two sets of upper clamping plates, a cutter, and a lower clamping plate relative to each other. The two upper clamping plates hold the packaging bag above the cutter, and the two lower clamping plates hold the packaging bag below the cutter. The cutter cuts the packaging bag along the seal. By clamping the packaging bag above and below the cut, the stability of the packaging bag during cutting is improved, thereby improving the cutting effect of bagged powder medicines.

[0036] 3. The blowing device blows air into the air chamber, and the airflow is blown out through the air outlet to sweep the cut area, thereby causing the cut packaging bag to detach from the cutter and reducing the probability of the heat-sealed packaging bag sticking to the cutter, thus improving the cutting effect of bagged powder medicines. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of this application;

[0038] Figure 2 This is a structural schematic diagram of the clamping component in this application, in which the mounting bracket is partially cut apart;

[0039] Figure 3 This is an exploded view of the clamping component and the mounting component in this application;

[0040] Figure 4 This is a partial sectional view of the upper clamping plate in this application.

[0041] Reference numerals: 1. Mounting bracket; 11. Connecting plate; 2. Cutter; 21. Cutting space; 22. Positioning hole; 3. Drive assembly; 31. Lead screw; 311. Threaded section; 32. Guide rod; 33. Drive component; 4. Clamping assembly; 41. Mounting plate; 42. Lower clamping plate; 421. First mounting hole; 422. Mounting groove; 43. Upper clamping plate; 431. Second mounting hole; 432. Air cavity; 433. Air duct; 434. Air outlet; 44. Upper protrusion; 45. Lower protrusion; 5. Mounting assembly; 51. Side column; 52. Middle column; 53. Locking nut; 531. Washer. Detailed Implementation

[0042] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0043] This application discloses a bag-cutting mechanism for an automatic powder packaging machine.

[0044] Reference Figure 1 and Figure 2 A bag-cutting mechanism for an automatic powder packaging machine includes a mounting frame 1, a cutter 2, and a drive assembly 3. The mounting frame 1 is mounted on the automatic packaging machine via a connecting plate 11 and is located below the sealing workpiece. Two cutters 2 are provided and are slidably disposed relative to each other within the mounting frame 1. The drive assembly 3 is mounted on the mounting frame 1 and is used to drive the two cutters 2 to move closer or further apart. The mounting frame 1 is also provided with a clamping assembly 4 for clamping the packaging bag.

[0045] Reference Figure 1 and Figure 2 The mounting frame 1 is hollow, and there are two connecting plates 11. The two connecting plates 11 are fixed on the two outer side walls of the mounting frame 1 opposite to each other along the movement direction of the cutter 2 and extend horizontally. The connecting plates 11 can be detachably installed on the automatic packaging machine by bolts.

[0046] Reference Figure 1 and Figure 2 A cutting space 21 is formed between the two cutters 2. There are two clamping components 4 arranged opposite each other and corresponding to the cutters 2. The following description only takes one clamping component 4 as an example. The clamping component 4 includes a mounting plate 41, a lower clamping plate 42 and an upper clamping plate 43.

[0047] Reference Figure 2 and Figure 3 The mounting plate 41 is horizontally slidably disposed within the mounting frame 1. The two mounting plates 41 are arranged opposite each other. The cutter 2 is disposed on the mounting plate 41. The lower clamping plate 42 is disposed on the mounting plate 41 and extends horizontally toward the cutting space 21. The upper clamping plate 43 is disposed on the mounting plate 41 and extends horizontally toward the cutting space 21. The upper clamping plate 43 and the lower clamping plate 42 are respectively located on the upper and lower sides of the cutter 2. The two upper clamping plates 43 cooperate to clamp the packaging bag located above the cutter 2, and the two lower clamping plates 42 cooperate to clamp the packaging bag located below the cutter 2.

[0048] Reference Figure 1 , Figure 2 and Figure 3 The lower clamping plate 42, the cutter 2, and the upper clamping plate 43 are detachably mounted on the mounting plate 41 via the mounting assembly 5, which includes a side column 51, a middle column 52, and a locking nut 53.

[0049] Reference Figure 2 and Figure 3 There are two side posts 51, which are fixed on the mounting plate 41 and extend vertically upward. The middle post 52 is located on the mounting plate 41 and extends vertically upward between the two side posts 51. Both the side posts 51 and the middle post 52 are threaded posts. The lower clamping plate 42 has three first mounting holes 421 at the end away from the cutting space 21. The first mounting holes 421 penetrate the upper and lower surfaces of the lower clamping plate 42. The three first mounting holes 421 correspond one-to-one with the two side posts 51 and one middle post 52. The lower clamping plate 42 is sleeved on the middle post 52 and the side posts 51 through the first mounting holes 421. The upper surface of the lower clamping plate 42 has a mounting groove 422 for easy installation of the cutter 2.

[0050] Reference Figure 2 and Figure 3 The end of the cutter 2 away from the cutting space 21 has a positioning hole 22, which corresponds to the central column 52. The cutter 2 is sleeved on the central column 52 through the positioning hole 22 and is located in the mounting groove 422. The lower surface of the cutter 2 abuts against the bottom wall of the mounting groove 422.

[0051] Reference Figure 2 and Figure 3 The upper clamping plate 43 has three second mounting holes 431 at the end away from the cutting space 21. The second mounting holes 431 penetrate the upper and lower surfaces of the upper clamping plate 43. The three second mounting holes 431 correspond one-to-one with the two side posts 51 and the middle post 52. The upper clamping plate 43 is sleeved on the middle post 52 and the side posts 51 through the second mounting holes 431, and the lower surface of the upper clamping plate 43 abuts against the upper surface of the cutter 2.

[0052] Reference Figure 2 and Figure 3 There are three locking nuts 53, which correspond one-to-one with the side post 51 and the middle post 52. The locking nuts 53 are threaded onto the corresponding threaded post and abut against the upper surface of the upper clamping plate 43. A washer 531 is provided between the locking nuts 53 and the upper clamping plate 43.

[0053] Reference Figure 2 , Figure 3 and Figure 4 The upper clamping plate 43 has an upper protrusion 44 on its side wall facing the cutting space 21, and the lower clamping plate 42 has a lower protrusion 45 on its side wall facing the cutting space 21. Both the upper protrusion 44 and the lower protrusion 45 are rubber blocks. The upper protrusion 44, the lower protrusion 45 and the end of the cutter 2 facing the cutting space 21 are flush.

[0054] Reference Figure 2 , Figure 3 and Figure 4 The upper clamping plate 43 has an air cavity 432 inside, and an air duct 433 communicating with the air cavity 432 is provided on the upper clamping plate 43. The end of the air duct 433 away from the upper clamping plate 43 is connected to a blower (not shown in the figure). The side wall of the upper clamping plate 43 facing the cutting space 21 has an air outlet 434. The air outlet 434 is communicating with the air cavity 432 and is located below the upper protrusion 44. The blower can be a blower pump, fan, compressor, etc. In this embodiment, the temperature of the blower is lower than the room temperature, so as to better detach the cut packaging bag from the cutter 2 and reduce the probability of the heat-sealed packaging bag sticking to the cutter 2.

[0055] Reference Figure 1 , Figure 2 and Figure 3 The drive assembly 3 is connected to two mounting plates 41 and is used to drive the mounting plates 41 to move. The drive assembly 3 includes a lead screw 31, a guide rod 32 and a drive component 33. The lead screw 31 is rotatably disposed in the mounting frame 1 and extends horizontally. The extension direction of the lead screw 31 is consistent with the extension direction of the connecting plate 11. The lead screw 31 has two threaded sections 311 with opposite helical lines. The two threaded sections 311 correspond one-to-one with the mounting plates 41. The mounting plates 41 are threadedly engaged with the corresponding threaded sections 311.

[0056] Reference Figure 1 , Figure 2 and Figure 3 The guide rod 32 is fixed on the two inner walls of the mounting frame 1 and extends horizontally. The extension direction of the guide rod 32 is parallel to the movement direction of the cutter 2. The guide rod 32 and the lead screw 31 are located on both sides of the cutter 2. The two mounting plates 41 are slidably sleeved on the guide rod 32. The drive component 33 is located on the outer wall of the mounting frame 1 and its output end is connected to the lead screw 31 and used to drive the lead screw 31 to rotate. In this embodiment, the drive component 33 is a motor.

[0057] Reference Figure 1 , Figure 2 and Figure 3 In other feasible embodiments, the drive component 3 can be replaced by a cylinder. When the drive component 3 is a cylinder, two cylinders are set and correspond one-to-one with the mounting plate 41. The telescopic end of the cylinder is connected to the corresponding mounting plate 41 and used to drive the mounting plate 41 to move.

[0058] Reference Figure 1 , Figure 2 and Figure 3 During installation, first, the lower clamping plate 42 is fitted onto the side column 51 and the middle column 52, so that the lower clamping plate 42 abuts against the mounting plate 41. Then, the cutter 2 is fitted onto the middle column 52, so that the lower surface of the cutter 2 abuts against the mounting groove 422 of the lower clamping plate 42. Next, the upper clamping plate 43 is fitted onto the side column 51 and the middle column 52, so that the lower surface of the upper clamping plate 43 is lower than the upper surface of the cutter 2. Then, the locking nut 53 is rotated for positioning. Disassembly and replacement can be performed by reversing the operation, thereby improving the convenience of installation, inspection, maintenance and replacement of the cutter 2 and the clamping assembly 4.

[0059] The working principle of this application embodiment is as follows:

[0060] After sealing, the packaging bag moves down between the two cutters 2. The drive unit 33 starts and moves the two mounting plates 41 closer together, thereby moving the two sets of upper clamping plates 43, cutters 2, and lower clamping plates 42 closer together. The two upper clamping plates 43 clamp the packaging bag above the cutter 2, and the two lower clamping plates 42 clamp the packaging bag below the cutter 2. The cutter 2 cuts the packaging bag along the seal. By clamping the packaging bag above and below the cut, the stability of the packaging bag during cutting is improved. The air blowing device blows air into the air chamber 432, and the airflow is blown out through the air outlet 434 to sweep the cut area, thereby causing the cut packaging bag to detach from the cutter 2, reducing the probability of the heat-sealed packaging bag adhering to the cutter 2, thus improving the cutting effect of bagged powder medicines.

[0061] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A powder automatic packaging machine bag cutting mechanism, characterized in that: The utility model relates to a cutting device for automatic packaging machine, including mounting frame (1), cutter (2) and drive assembly (3), mounting frame (1) is located below the sealing workpiece on automatic packaging machine through connecting plate (11), cutter (2) is equipped with two, two cutter (2) are oppositely slidably arranged in mounting frame (1), drive assembly (3) is located on mounting frame (1) and is used for driving two cutter (2) to be close to each other or away from each other, mounting frame (1) is also equipped with the clamping assembly (4) of the bag for clamping.

2. The automatic powder packaging machine bag cutting mechanism according to claim 1, characterized in that: The clamping assembly (4) is oppositely provided with two and corresponds to the cutter (2), the clamping assembly (4) includes: The mounting plate (41) is slidably arranged in the mounting frame (1), and the two mounting plates (41) are oppositely arranged, the cutter (2) is arranged on the mounting plate (41), and the cutting space (21) is formed between the two cutters (2), the drive assembly (3) is connected with the mounting plate (41) and is used to drive the mounting plate (41) to move; The lower clamping plate (42) is arranged on the mounting plate (41) and extends horizontally towards the cutting space (21); The upper clamping plate (43) is arranged on the mounting plate (41) and extends horizontally towards the cutting space (21), the upper clamping plate (43) and the lower clamping plate (42) are respectively located on the upper and lower sides of the cutter (2), the two upper clamping plates (43) cooperate to clamp the packaging bag above the cutter (2), and the two lower clamping plates (42) cooperate to clamp the packaging bag below the cutter (2).

3. The automatic powder packaging machine bag cutting mechanism according to claim 2, characterized in that: The lower clamping plate (42), the cutter (2) and the upper clamping plate (43) are detachably arranged on the mounting plate (41) through the mounting assembly (5).

4. The automatic powder packaging machine bag cutting mechanism according to claim 3, characterized in that: The mounting assembly (5) includes: The side column (51) is provided with two, and the two side columns (51) are fixedly arranged on the mounting plate (41) and vertically extend upwards, the lower clamping plate (42) and the upper clamping plate (43) are sleeved on the side column (51); The middle column (52) is arranged on the mounting plate (41) and vertically extends upwards and is located between the two side columns (51), the lower clamping plate (42), the cutter (2) and the upper clamping plate (43) are sleeved on the side column (51), the upper and lower side walls of the cutter (2) are respectively abutted with the upper clamping plate (43) and the lower clamping plate (42), and the side column (51) and the middle column (52) are both threaded columns; The locking nut (53) is provided with three and corresponds to the side column (51) and the middle column (52), the locking nut (53) is threadedly connected on the corresponding threaded column and abuts on the upper surface of the upper clamping plate (43).

5. The automatic powder packaging machine bag cutting mechanism according to claim 4, characterized in that: The lower clamping plate (42) is provided with a mounting groove (422) for mounting the cutter (2).

6. The automatic powder packaging machine bag cutting mechanism according to claim 2, characterized in that: The drive assembly (3) includes: A screw rod (31) is arranged in the mounting frame (1) and extends horizontally, and two screw thread sections (311) with opposite threads are arranged on the screw rod (31), and each of the two screw thread sections (311) corresponds to a mounting plate (41) which is threadedly connected with the corresponding screw thread section (311); A guide rod (32) is fixedly arranged on the opposite inner walls of the mounting frame (1), and the extending direction of the guide rod (32) is parallel to the moving direction of the cutter (2), and the two mounting plates (41) are slidably sleeved on the guide rod (32); A driving member (33) is arranged on the mounting frame (1) and has an output end connected with the screw rod (31) and used for driving the screw rod (31) to rotate.

7. The automatic powder packaging machine bag cutting mechanism according to claim 2, characterized in that: An upper protruding block (44) is arranged on the side wall of the cutting space (21) of the upper clamping plate (43), a lower protruding block (45) is arranged on the side wall of the cutting space (21) of the lower clamping plate (42), the upper protruding block (44) and the lower protruding block (45) are rubber blocks, and the upper protruding block (44), the lower protruding block (45) and the cutter (2) are flush at the end facing the cutting space (21).

8. The automatic powder packaging machine bag cutting mechanism according to claim 7, characterized in that: The upper clamping plate (43) has an air cavity (432) therein, the upper clamping plate (43) is provided with an air pipe (433) in communication with the air cavity (432), one end of the air pipe (433) away from the upper clamping plate (43) is connected with a blowing device, the upper clamping plate (43) has an air outlet (434) on the side wall facing the cutting space (21), the air outlet (434) is in communication with the air cavity (432) and is located below the upper protruding block (44).

Images