Packaging machine

Abstract

The utility model belongs to the field of material packaging equipment, and discloses a packaging machine which comprises a rotating component, a packaging bag carrier and a posture control mechanism, the rotating axial direction of the rotating component is arranged in the transverse direction, and the packaging bag carrier is rotationally connected in the rotating circumferential direction of the rotating component. Through the guide path and the guide piece of the posture control mechanism, when the rotating component drives the packaging bag carrier on the rotating component to rotate, the eccentrically arranged guide piece can drive the packaging bag carrier to move in the posture that the opening of the packaging bag faces upwards all the time under the guide of the guide path; and furthermore, the posture can be movably switched between stations in the rotating circumferential direction of the rotating component to package materials, and the advancing path length of a packaging bag on a plane in the packaging process can be greatly reduced through circumferential rotating switching, so that the overall size of the packaging machine is reduced, and meanwhile, the working efficiency is also improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of material packaging equipment, and specifically relates to a packaging machine. Background Technology

[0002] In existing technologies, a common type of packaging machine is the linear push bagging packaging machine. This machine first places the material into a trough, and a pushing mechanism pushes the material from the trough to the opening of a bag fitted onto a clamp. Then, a clamping mechanism holds the bag containing the material and moves it linearly to a heat-sealing mechanism for heat sealing. After heat sealing, the bag is unloaded, thus completing the packaging. However, this linear push packaging machine occupies a large space, the bag travels a long path throughout the packaging process, and only a small number of bags can be packaged each time. Although other existing technologies incorporate designs to flip or rotate the clamps to shorten the switching time between bagging and loading stations, this does not significantly reduce the overall size and space occupied, and reduces work efficiency. Furthermore, it is not suitable for liquid materials. Summary of the Invention

[0003] In view of this, the purpose of this utility model is to provide a packaging machine to solve the problems of large size and low working efficiency caused by the long travel path of the packaging bag during the packaging process in existing packaging machines.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A packaging machine includes a rotating component, a packaging bag carrier, and a posture control mechanism. The rotating component has its rotation axis arranged laterally, and the packaging bag carrier is rotatably connected to the rotating component in its circumferential direction.

[0006] The attitude control mechanism includes a stationary annular guide path and a guide member connected to the packaging bag carrier. The guide member is eccentrically positioned relative to the hinge point between the packaging bag carrier and the rotating component. The guide member moves along the annular guide path as the rotating component rotates. The radius of rotation of the hinge point between the packaging bag carrier and the rotating component is the same as the radius of the guide path. The center of the guide path is eccentrically positioned relative to the rotation axis of the rotating component, so that the packaging bag maintains an upward-facing posture as the packaging bag carrier rotates with the rotating component.

[0007] In a possible implementation, the guide includes a guide part one and a guide part two, and the guide path includes a circular guide line one that cooperates with the guide part one and a circular guide line two that cooperates with the guide part two.

[0008] In one possible implementation, a bag-loading station is provided in the circumferential direction of the rotating component, and the bag-loading station is provided with a flipping bag-loading mechanism. When the bag-loading mechanism transports the packaging bag with the opening facing horizontally to the bag-loading station, it flips the bag so that the opening faces upward.

[0009] In a possible implementation, the flipping bag mechanism includes a swing arm, a drive unit, and a bag clamping component. The drive unit drives the swing arm to rotate. The middle part of the swing arm is hinged to the bag clamping component. A constraint link is hinged to one end of the bag clamping component away from its clamping part. The constraint link is rotatably positioned above the hinge center of the swing arm.

[0010] In one possible implementation, a loading station is provided in the circumferential direction of the rotating component, the loading station is provided with a discharging mechanism, the discharging mechanism includes a material pump and a vertically arranged discharge pipe connected to the material pump, and a bag opening assembly is provided on both sides below the discharge pipe.

[0011] In one possible implementation, a heat-sealing station is provided in the circumferential direction of the rotating component. The heat-sealing station is provided with a heat-sealing mechanism for heat-sealing the packaging bag after it is unloaded. The heat-sealing mechanism includes a fixed heat-sealing part, a movable heat-sealing part, and a drive device. The drive device drives the movable heat-sealing part to flip and clamp relative to the fixed heat-sealing part between a clearance position and a working position.

[0012] Alternatively, a transfer station may be provided in the circumferential direction of the rotating component, and the transfer station may be equipped with a transfer mechanism to transfer the filled packaging bag to the vacuuming mechanism.

[0013] In one possible implementation, a shipping station is provided in the circumferential direction of the rotating component, and the shipping station is provided with a packaging bag conveying mechanism.

[0014] In a possible implementation, the attitude control mechanism further includes a guide disk, which has an annular cam groove that forms the guide path. The first guide part is fitted into the annular cam groove of the first guide line, and the second guide part is fitted into the annular cam groove of the second guide line. There is a height difference between the groove depths of the annular cam groove of the first guide line and the annular cam groove of the second guide line.

[0015] In one possible implementation, the packaging bag carrier includes multiple sets of bag clamping assemblies distributed along a first direction parallel to the axis of the rotating member.

[0016] In a possible implementation, the bag clamping assembly includes two clamping parts and a drive shaft that is tractively connected to the two clamping parts for clamping action. The drive shaft is connected to a gear. A second drive device is provided at the upper bag station in the circumferential direction of the rotating member. The second drive device includes a drive motor and an incomplete gear driven by the drive motor. The incomplete gear meshes with a portion of the gear. The drive motor drives the incomplete gear to switch between a clearance position and a transmission position in the circumferential direction.

[0017] In a possible implementation, the bag clamping assembly includes an opening clamping assembly, a second bag opening assembly, a second driving device, and two clamping parts. The two clamping parts are used to clamp both sides of the packaging bag. The second driving device includes a first driving member and a second driving member arranged concentrically. The first driving member drives all bag clamping assemblies to synchronously switch between an extended bag state and a retracted bag state. The second driving member drives the two clamping parts of all bag clamping assemblies to synchronously switch between an open clamping state and a closed clamping state.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The packaging machine of this utility model, through the guide path and guide component of the attitude control mechanism, when the rotating component drives the packaging bag carrier on it to rotate, the eccentrically set guide component can drive the packaging bag carrier to always move in the posture of the packaging bag opening facing upward under the guidance of the guide path. In this way, it can move and switch between workstations in the circumferential direction of the rotating component to package materials. Moreover, the circumferential rotation switching can significantly reduce the length of the packaging bag's travel path on the plane during the packaging process, thereby reducing the overall size of the packaging machine and improving work efficiency.

[0020] Furthermore, by setting multiple stations, including bag loading and material filling stations, on the circumferential rotation of the rotating component, and cooperating with the attitude control mechanism to maintain the attitude of the packaging bag opening always facing upwards, processes such as bag loading, material filling, heat sealing, and shipping can be carried out. This enables cyclical rotational conveying and continuous packaging, improving work efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the connection structure of a rotating component, a packaging bag carrier, and a posture control mechanism in a packaging machine.

[0022] Figure 2 An exploded view of the attitude control mechanism of a packaging machine;

[0023] Figure 3 This is a schematic diagram of the circumferential distribution of the rotating components of a packaging machine.

[0024] Figure 4 This is a schematic diagram of the principle of the posture control mechanism of a packaging machine;

[0025] Figure 5 A perspective view of a bag-flipping and attitude control mechanism of a packaging machine;

[0026] Figure 6 for Figure 5 Side view of the structure shown;

[0027] Figure 7 This is a schematic diagram of the principle of a bag-flipping mechanism in a packaging machine.

[0028] Figure 8 This is a perspective view of the feeding mechanism of a packaging machine, wherein... Figure 8 'a' is an overall diagram of the feeding mechanism. Figure 8 b is a magnified view of the overall image;

[0029] Figure 9 This is a perspective view of the heat sealing mechanism of a packaging machine, wherein... Figure 9 a is an overall diagram of the heat sealing mechanism. Figure 9 b is a magnified view of the overall image;

[0030] Figure 10 A partially exploded view of one embodiment of a packaging bag carrier for a packaging machine, wherein... Figure 10 'a' is an overall view of a portion of the exploded view. Figure 10 b is a magnified view of the overall image;

[0031] Figure 11 A schematic diagram of another embodiment of a packaging bag carrier for a packaging machine;

[0032] Figure 12 for Figure 11 The sectional perspective view of the implemented structure is shown.

[0033] In the diagram: 0-Packaging bag; 01-Bag loading station; 02-Filling station; 03-Heat sealing station; 04-Shipping station; 2-Rotating component; 3-Attitude control mechanism; 31-Guide path; 311-Guide line one; 312-Guide line two; 32-Guide plate; 321-Annular cam groove; 33-Guide component; 331-Guide part one; 332-Guide part two; 4-Packaging bag carrier; 41-Gear one; 42-Clamping part; 43-Drive shaft; 44-Cam component; 45-Pressure rod; 46-Active... 47-Spring; 48-First driving component; 49-Second driving component; 410-Clamping drive rod; 411-Cam component two; 412-Gear three; 413-Bag opening drive rod; 414-Gear two; 5-Flipping bag loading mechanism; 51-Swing arm; 52-Bag clamping component; 53-Constraint link; 6-Discharging mechanism; 61-Material pump; 62-Discharge pipe; 63-Bag opening assembly one; 7-Heat sealing mechanism; 71-Drive device one; 72-Movable heat sealing part; 73-Heat sealing block; 74-Fixed heat sealing part. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to specific embodiments.

[0035] Please refer to Figure 1-11 As shown, an embodiment of this application provides a packaging machine, including a rotating component 2, a packaging bag carrier 4, and a posture control mechanism 3. The rotating component 2 is arranged in a transverse direction along its rotation axis, and the packaging bag carrier 4 is rotatably connected to the rotating component 2 in its rotation circumferential direction.

[0036] This packaging machine is a bag-type packaging machine, which packages materials through processes such as bag loading, material filling, and heat sealing. The bag carrier 4 is rotatable and can carry the packaging bag 0, moving it between different workstations via the rotating component 2. The rotating component 2 is used to switch the packaging bag 0 on the bag carrier 4 between different workstations for processes such as bag removal, material filling, and heat sealing. The rotation axis of the rotating component 2 is laterally positioned, facilitating parallel expansion with multiple workstations and enabling simultaneous packaging processing at multiple workstations, improving packaging efficiency. It also features a compact structure and small footprint. The attitude control mechanism 3 controls the bag carrier 4 to maintain a preset attitude between different workstations, facilitating the corresponding processes at each workstation.

[0037] In an embodiment of this application, the attitude control mechanism 3 may include a stationary annular guide path 31 and a guide member 33 connected to the packaging bag carrier 4. The guide member 33 is eccentrically positioned relative to the hinge point between the packaging bag carrier 4 and the rotating member 2. The guide member 33 moves along the annular guide path 31 as the rotating member 2 rotates. The rotation radius of the hinge point between the packaging bag carrier 4 and the rotating member 2 is the same as the radius of the guide path 31. The center of the guide path 31 is eccentrically positioned relative to the rotation axis of the rotating member 2, so that the packaging bag 0 maintains an upward-facing posture as the packaging bag carrier 4 rotates with the rotating member 2.

[0038] The attitude control mechanism 3 is configured to control the packaging bag carrier 4 on the rotating component 2 to rotate with the rotating component 2 in a preset attitude. Specifically, the preset attitude is that the packaging bag 0 on it has its opening facing upwards. In this attitude, the packaging bag carrier 4 can be filled with solid or liquid materials from top to bottom. It can also avoid the problems of the packaging bag 0 easily shrinking and the bag opening not being even when materials are filled horizontally, making the filling more convenient, reducing the need for other mechanisms to prevent shrinkage and uneven bag openings, and lowering costs. Based on this, in order to maintain the aforementioned posture, the posture control mechanism 3 achieves this through guidance. Specifically, a guide 33 is provided on the packaging bag carrier 4, and the guide 33 moves along a stationary circular guide path 31 to maintain the posture of the packaging bag carrier 4. Since the guide 33 is eccentrically positioned relative to the hinge point between the packaging bag carrier 4 and the rotating member 2, the guide 33 will rotate around this hinge point when rotating with the rotating member 2. To prevent it from rotating around this hinge point and to maintain a fixed relative position with the hinge point, the guide path 31 of the guide 33 is configured as a circular guide path with the same rotation radius as the hinge point. 31, and the center of the guide path 31 is eccentric relative to the rotation axis of the rotating member 2, so that the guide member 33 can travel on a circular rotation trajectory with the same radius as the circular rotation trajectory of the hinge point. By configuring the guide path 31 to be consistent with its motion trajectory under unchanged posture, the position of the guide member 33 relative to the hinge point between the packaging bag carrier 4 and the rotating member 2 can remain unchanged through the preset guide path 31, and drive the packaging bag carrier 4 to rotate in the opposite direction of the rotation of the rotating member 2. In this way, the packaging bag carrier 4 can always maintain the posture of the packaging bag 0 with the bag opening facing upward when rotating with the rotating member 2.

[0039] Through the above technical solution, when the rotating component 2 drives the packaging bag carrier 4 to rotate, the eccentrically arranged guide component 33 can drive the packaging bag carrier 4 to always move with the packaging bag 0 facing upward under the guidance of the guide path 31. In this way, it can move and switch between workstations in the circumferential direction of the rotating component 2 to package materials. Furthermore, the circumferential rotation switching can greatly reduce the length of the packaging bag 0's travel path on the plane during the packaging process, thereby reducing the overall size of the packaging machine and improving work efficiency.

[0040] Since the guide path 31 uses a guide structure such as a cam groove for guidance, there is often a large pressure angle during the guidance contact process. The large pressure angle may cause the guide 33 to get stuck during the rotation of the rotating component 2, resulting in an unsmooth guidance process.

[0041] To solve this problem, in one embodiment, the guide member 33 includes a first guide part 331 and a second guide part 332, and the guide path 31 includes a first annular guide line 311 that cooperates with the first guide part 331 and a second annular guide line 312 that cooperates with the second guide part 332.

[0042] The guide member 33 is equipped with two guide parts, namely guide part one 331 and guide part two 332. Guide part one 331 and guide part two 332 move along a circular guide path 31 respectively. For easy distinction, the guide path 31 that cooperates with guide part one 331 is called guide line one 311, and the guide path 31 that cooperates with guide part two 332 is called guide line two 312. In this way, the pressure generated during the guidance process can be dispersed by guide part one 331 and guide part two 332, reducing the friction of the guide member 33 during the guidance process, making the guidance process smoother and more stable.

[0043] In other embodiments, the guide member 33 may only have a guide part 331, and the corresponding guide may only have a guide line 311, which can also achieve attitude maintenance.

[0044] In specific implementation, the attitude control mechanism 3 specifically includes a stationary guide disk 32 parallel to the rotating component 2. The guide disk 32 is provided with an annular cam groove 321 that forms the guide path 31. The first guide part 331 is fitted in the annular cam groove 321 of the first guide line 311, and the second guide part 332 is fitted in the annular cam groove 321 of the second guide line 312. There is a height difference between the groove depths of the annular cam groove 321 of the first guide line 311 and the annular cam groove 321 of the second guide line 312.

[0045] By constructing an annular cam groove 321 structure for the guide path 31, when the first guide part 331 and the second guide part 332 move along their respective guide paths, since the first guide path 311 and the second guide path 312 intersect, the groove depth of the annular cam groove 321 of the first guide path 311 and the annular cam groove 321 of the second guide path 312 is configured to have a height difference. This facilitates the orderly movement of the first guide part 331 and the second guide part 332 along their respective guide paths, avoiding the situation where the first guide part 331 or the second guide part 332 misaligns and enters the wrong guide path during the movement, thus ensuring the reliability of the entire attitude adjustment process.

[0046] Please refer to Figure 3 In the embodiments of this application, multiple workstations are provided in the circumferential direction of the rotating component 2. The rotating component 2 drives the packaging bag carrier 4 on it to move and switch between workstations. The multiple workstations may include one or more of the following: bag loading workstation 01, material filling workstation 02, heat sealing workstation 03, and shipping workstation 04.

[0047] In one embodiment, combined with Figure 5-7 As shown, a bag-loading station 01 is provided in the circumferential direction of the rotating component 2. The bag-loading station 01 is provided with a flipping bag-loading mechanism 5. When the flipping bag-loading mechanism 5 transports the packaging bag 0 with the bag opening facing horizontally to the bag-loading station 01, it flips the bag opening upward.

[0048] At bag loading station 01, the packaging bag 0 is loaded onto the packaging bag carrier 4 via a flipping bag loading mechanism 5. Since the packaging bags 0 are all positioned with their openings facing upwards on the packaging bag carrier 4, and most packaging bags 0 are stored horizontally stacked, the flipping bag loading mechanism 5 is used to ensure that the horizontally positioned packaging bags 0 are in a vertical position with their openings facing upwards when loaded onto the packaging bag carrier 4. By flipping, the horizontally positioned packaging bags 0 can be adjusted to a vertical position with their openings facing upwards during the loading process, thus achieving the flipping of the packaging bags 0. In practical implementation, this can be achieved using an existing flippable mechanical structure with a bag clamping mechanism at its end.

[0049] In a preferred embodiment of the flipping bag-loading mechanism 5, the flipping bag-loading mechanism 5 includes a swing arm 51, a drive member 1, and a bag-clamping component 52. The drive member 1 drives the swing arm 51 to rotate. The middle part of the swing arm 51 is hinged to the bag-clamping component 52. A constraint link 53 is hinged to one end of the bag-clamping component 52 away from its clamping part 42. The constraint link 53 is rotatably disposed above the hinge center of the swing arm 51.

[0050] The swing arm 51 is rotatable and is driven to rotate by a drive component. The rotation of the swing arm 51 causes its hinge point with the bag clamping component 52 to rotate around the rotation center of the swing arm 51. Since one end of the bag clamping component 52 is constrained by the rotatably configured constraint link 53, the bag clamping opening of the bag clamping component 52 can switch from a horizontal to a vertical position. This allows the packaging bag 0 to be flipped from a horizontal position to a vertical position with the opening facing upwards after being horizontally clamped, thus achieving the flipping and loading of the packaging bag 0. Specifically, the drive component can be a motor or other similar components as the drive source.

[0051] To facilitate the filling of materials into the packaging bag with the opening facing upwards, combined with Figure 3 and Figure 8 As shown, further, the rotating component 2 is provided with a loading station 02 in the circumferential direction of rotation, the loading station 02 is provided with a discharging mechanism 6, the discharging mechanism 6 includes a material pump 61 and a vertically arranged discharge pipe 62 connected to the material pump 61, and bag opening components 63 are provided on both sides below the discharge pipe 62.

[0052] In this way, through the unloading mechanism 6 at the unloading station, when the packaging bag carrier 4 moves to the unloading station, the unloading mechanism 6 is vertically aligned with the packaging bag 0, and the material can fall into the packaging bag 0 through the discharge of the unloading mechanism 6, thereby realizing the filling. In the specific implementation process, the material can be a solid material or a liquid material, without limitation. The unloading mechanism 6 is preferably a unloading mechanism 6 for filling liquid materials. For example, the unloading mechanism 6 includes a material pump 61 and a discharge pipe 62 connected to the material pump 61. The discharge pipe 62 is vertically arranged and located directly above the packaging bag carrier 4 when it is in the filling station 02. When there is a packaging bag 0 below, the material pump 61 starts to control the material to be discharged from the discharge pipe 62 into the packaging bag 0. At the same time, bag opening components such as vacuum suction cups 63 can be set on both sides below the discharge pipe 62. The bag opening components 63 on both sides can allow the bag opening to be suctioned on both sides, so that the bag opening can be opened better, and thus the material can be filled better.

[0053] For further details, please refer to... Figure 3 and Figure 8 As shown, a heat sealing station 03 is provided in the circumferential direction of the rotating component 2. The heat sealing station 03 is provided with a heat sealing mechanism 7 for heat sealing the packaging bag 0 after it is unloaded. The heat sealing mechanism 7 includes a fixed heat sealing part 74, a movable heat sealing part 72 and a driving device 71. The driving device 71 drives the movable heat sealing part 72 to flip and clamp relative to the fixed heat sealing part 74 between the clearance position and the working position.

[0054] The heat sealing mechanism 7 on the heat sealing station 03 heat seals the packaging bag 0 on the packaging bag carrier 4. Since the opening of the packaging bag 0 is facing upward, the opening of the packaging bag 0 can be heat sealed by flipping the heat sealing method. Specifically, the heat sealing mechanism 7 mainly includes a fixed heat sealing part 74, a movable heat sealing part 72, and a drive device 71. The fixed heat sealing part 74 is fixedly installed on the heat sealing station 03 and located on one side of the opening of the packaging bag 0. The drive device 71 is connected to the movable heat sealing part 72 and is used to drive the movable heat sealing part 72 to switch between the working position and the avoidance position. When the movable heat sealing part 72 is in the avoidance position, it is located above the fixed heat sealing position. When it is in the working position, it flips to the opposite side of the fixed heat sealing position and clamps the opening of the packaging bag 0. The opening of the bag can be fused together at high temperature to achieve heat sealing of the opening.

[0055] Specifically, the movable heat-sealing part 72 has an L-shaped structure, with one end hinged above the fixed heat-sealing part 74, and a heat-sealing block 73 provided on the inner side of the other end. Driven by a drive device 71 such as a linear cylinder, the movable heat-sealing part 72 can rotate around the hinge point and flip to the opposite side of the heat-sealing block 73 of the fixed heat-sealing part 74, thereby realizing the heat sealing of the bag opening facing upward.

[0056] In other embodiments, heat sealing can also be performed using an external heat sealing mechanism 7. For example, a transfer station can be provided in the circumferential direction of the rotating component 2. The transfer station is equipped with a transfer mechanism to transfer the filled packaging bag 0 to the vacuuming mechanism. The transfer station can facilitate the installation of transfer mechanisms such as a robotic arm with a bag clamping mechanism. The transfer mechanism can clamp the filled packaging bag 0 and move it to the vacuuming mechanism. The vacuuming structure can create a vacuum environment inside or outside the packaging bag 0. Heat sealing is performed in a vacuum environment. In this environment, a large amount of air inside the packaging bag 0 is discharged, reducing the content of oxygen and other gases, which can effectively inhibit the growth of aerobic microorganisms and the oxidation reaction of the product.

[0057] After the packaging bag 0 is heat-sealed, it needs to be shipped out. Therefore, a shipping station 04 can be provided in the circumferential direction of the rotating component 2. The shipping station 04 is equipped with a packaging bag conveying mechanism. By setting up the shipping station 04, the packaging bag 0 can be conveyed out through the packaging bag conveying mechanism at this station after heat sealing. Specifically, the packaging bag conveying mechanism can use a conveyor belt for conveying. For example, the conveyor belt mechanism can be set below the heat sealing mechanism 7, so that the packaging bag 0 can fall onto the conveyor belt mechanism after heat sealing and be conveyed outward for shipment.

[0058] To achieve batch bag clamping operations, the packaging bag carrier 4 includes multiple sets of bag clamping assemblies distributed along a first direction parallel to the axial direction of the rotating member 2. Simultaneously, a flipping bag-loading mechanism 5, with the same number and one-to-one correspondence as the bag clamping assemblies, is provided at the bag loading station 01, and a filling mechanism, with the same number and one-to-one correspondence as the bag clamping assemblies, is also provided at the filling station 02. This allows for the packaging of a batch of packaging bags 0 after one rotation of the rotating member 2, significantly improving work efficiency. Specifically, the filling mechanism adopts an existing filling mechanism for liquid materials.

[0059] In a preferred embodiment of the bag clamping assembly, combined with Figure 9 As shown, the bag clamping assembly includes two clamping parts 42 and a transmission shaft 43 that is pulsatorically connected to the two clamping parts 42 for clamping action. The transmission shaft 43 is connected to a gear 41. A second driving device is provided at the upper bag station 01 in the circumferential direction of the rotating member 2. The second driving device includes a first driving motor and an incomplete gear driven by the first driving motor. The incomplete gear partially meshes with the gear 41. The first driving motor drives the incomplete gear to switch between a clearance position and a transmission position in the circumferential direction.

[0060] The packaging bag carrier 4 mainly includes a bag clamping assembly, which clamps the packaging bag 0. The two clamping parts 42 of the bag clamping assembly are driven by a transmission shaft 43, which is connected to a gear 41 for meshing with an incomplete gear of the drive device 2. Since the transmission component of the drive device 2 is an incomplete gear, the incomplete gear can circumferentially switch between a transmission position and a clearance position by rotation. That is, when the teeth of the incomplete gear rotate to the transmission position, they can mesh with gear 41, and rotation drives the clamping assembly to clamp. When the teeth of the incomplete gear rotate to the other side, the area without teeth does not mesh with gear 41, thus avoiding interference or transmission with gear 41, achieving selective clearance and transmission. In this way, the drive device 2 can be located outside the rotating component 2 or the packaging bag carrier 4, reducing the weight and structural complexity of the bag clamping assembly. Specifically, a cam 44 is provided on the drive shaft 43, and a pressure rod 45 is rotatably mounted on the mounting bracket of the bag clamping assembly on the cam 44. The other end of the pressure rod 45 is connected to two clamping parts 42 whose movement direction is the same as that of the pressure rod 45. The other clamping part 42 is fixedly set, and the interactive clamping part 42 is equipped with a spring 47. In this way, when the drive shaft 43 rotates and lifts the pressure rod 45, the other end of the pressure rod 45 will drive the movable clamping part 42 to move relative to the other clamping part 42, thereby performing an opening action to clamp the packaging bag 0. At the same time, multiple sets of bag clamping assemblies can realize the bag opening action through relative movement along the axial direction. For example, two movable shafts 46 are respectively connected to a bag clamping assembly and drive the two sets of bag clamping assemblies to move relative to each other, thereby realizing the bag opening action.

[0061] In another preferred embodiment of the bag clamping assembly, combined with Figures 10-12 As shown, the bag clamping assembly includes an opening clamping component, a second bag opening component, a second driving device, and two clamping parts. The two clamping parts are used to clamp both sides of the packaging bag 0. The second driving device includes a first driving member 48 and a second driving member 49 arranged concentrically. The first driving member 48 drives all bag clamping components to synchronously switch between an expanded bag state and a contracted bag state. The second driving member 49 drives the two clamping parts of all bag clamping components to synchronously switch between an open clamping state and a closed clamping state. The difference between the two preferred embodiments lies in the change of the driving structure.

[0062] In this implementation structure, the first driving member 48 and the second driving member 49 of the second driving device are concentrically arranged, i.e., the first driving member 48 and the second driving member 49 are nested together. This structural design can effectively save space and facilitate the transmission and distribution of power. The axial movement or rotation of the first driving member 48 drives all the bag clamping assemblies to synchronously switch between the bag unfolding state and the bag shrinking state through the bag opening assembly. Similarly, the axial movement or rotation of the second driving member 49 drives the two clamping parts of all the bag clamping assemblies to synchronously switch between the open clamping state and the closed clamping state through the opening clamping assembly.

[0063] Specifically, the first driving member 48 is sleeved inside the second driving member 49 and can rotate relative to it. The second driving member 49 is connected to a gear 414, which meshes with a gear 412 at the upper end of the opening clamping drive rod 410 of the opening clamping assembly. The opening clamping drive rod 410 drives the two clamping parts and drives them to perform an opening clamping action. The transmission connection can be achieved by a cam 411 and an elastic pressure member such as a spring 47 working together to drive one of the clamping parts to perform an opening clamping action relative to the other clamping part to achieve bag clamping. The second driving member 49 is connected to an opening bag driving rod 413. The opening bag driving rod 413 is provided with a first thread and a second thread that respectively engage with the two clamping parts. The first thread and the second thread are in opposite directions. Through this threaded engagement structure, when the opening bag driving rod 413 rotates, the two bag clamping parts can move closer or further apart, thereby adjusting the distance between the two clamping parts of each bag clamping assembly and realizing the unfolding and shrinking action of the packaging bag 0. For example, in the unfolded state, the forward rotation of the first drive member 48 causes the opening drive rod 413 to move the two clamping parts away from each other, thus opening the packaging bag 0; in the shrinked state, the first drive member 48 rotates in the reverse direction, causing the two clamping parts to move closer to each other, thus tightening the packaging bag 0 for subsequent packaging operations. The first drive member 48 and the second drive member 49 can be rotated by guidance or in other driving directions.

[0064] In practical implementation, the rotating component 2 can be mounted on the frame, and its rotation is driven by a drive mechanism. The main rotating shaft of the drive mechanism connects two rotating components 2, and multiple sets of packaging bag carriers 4 are arranged between the two rotating components 2. The mechanism corresponding to each workstation is arranged on the frame along the circumference of the rotating component 2. The rotation of the rotating component 2 can drive the packaging bag carriers 4 to circumferentially transport the bags. During the transport process, the packaging bags held by the packaging bag carriers 4 need to be kept vertical. If the first drive component 48 and the second drive component 49 are not concentrically arranged, their movement trajectories will intersect, which may lead to unstable mechanism drive. Concentric arrangement of the first drive component 48 and the second drive component 49 not only results in a compact structural layout but also facilitates component arrangement and stable mechanism operation.

[0065] The above are merely preferred embodiments of this utility model. It should be noted that the above preferred embodiments should not be considered as limitations on this utility model, and the scope of protection of this utility model should be determined by the scope defined in the claims. For those skilled in the art, several improvements and modifications can be made without departing from the spirit and scope of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A packaging machine, characterized in that, It includes a rotating component, a packaging bag carrier, and an attitude control mechanism. The rotating component has its rotation axis arranged laterally, and the packaging bag carrier is rotatably connected to the rotating component in its rotation circumferential direction. The attitude control mechanism includes a stationary annular guide path and a guide member connected to the packaging bag carrier. The guide member is eccentrically positioned relative to the hinge point between the packaging bag carrier and the rotating component. The guide member moves along the annular guide path as the rotating component rotates. The radius of rotation of the hinge point between the packaging bag carrier and the rotating component is the same as the radius of the guide path. The center of the guide path is eccentrically positioned relative to the rotation axis of the rotating component, so that the packaging bag maintains an upward-facing posture as the packaging bag carrier rotates with the rotating component.

2. The packaging machine as described in claim 1, characterized in that, The guide component includes a guide part one and a guide part two, and the guide path includes a circular guide line one that cooperates with the guide part one and a circular guide line two that cooperates with the guide part two.

3. The packaging machine as described in claim 1, characterized in that, A bag-loading station is provided in the circumferential direction of the rotating component. The bag-loading station is provided with a flipping bag-loading mechanism. When the bag-loading mechanism transports the packaging bag with the opening facing horizontally to the bag-loading station, it flips the bag so that the opening faces upward.

4. A packaging machine as described in claim 3, characterized in that, The flipping bag-loading mechanism includes a swing arm, a drive unit, and a bag-clamping component. The drive unit drives the swing arm to rotate. The middle part of the swing arm is hinged to the bag-clamping component. A constraint link is hinged to one end of the bag-clamping component away from its clamping part. The constraint link is rotatably positioned above the hinge center of the swing arm.

5. A packaging machine as described in claim 1, characterized in that, A loading station is provided on the circumferential direction of the rotating component. The loading station is provided with a discharging mechanism. The discharging mechanism includes a material pump and a vertically arranged discharge pipe connected to the material pump. A bag opening component is provided on both sides below the discharge pipe.

6. A packaging machine as described in claim 1, characterized in that, A heat sealing station is provided in the circumferential direction of the rotating component. The heat sealing station is provided with a heat sealing mechanism for heat sealing the packaging bag after feeding. The heat sealing mechanism includes a fixed heat sealing part, a movable heat sealing part and a driving device. The driving device drives the movable heat sealing part to flip and clamp relative to the fixed heat sealing part between the clearance position and the working position. Alternatively, a transfer station may be provided in the circumferential direction of the rotating component, and the transfer station may be equipped with a transfer mechanism to transfer the filled packaging bag to the vacuuming mechanism.

7. A packaging machine as described in claim 2, characterized in that, The attitude control mechanism also includes a guide plate, which has an annular cam groove that forms the guide path. The first guide part is fitted into the annular cam groove of the first guide line, and the second guide part is fitted into the annular cam groove of the second guide line. There is a height difference between the groove depths of the annular cam groove of the first guide line and the annular cam groove of the second guide line.

8. A packaging machine as described in claim 1, characterized in that, The packaging bag carrier includes multiple sets of bag clamping assemblies distributed along a first direction parallel to the axis of the rotating member.

9. A packaging machine as described in claim 8, characterized in that, The bag clamping assembly includes two clamping parts and a drive shaft that is pulsatorically connected to the two clamping parts for clamping action. The drive shaft is connected to a gear. A second drive device is provided at the upper bag station in the circumferential direction of the rotating component. The second drive device includes a drive motor and an incomplete gear driven by the drive motor. The incomplete gear meshes with a part of the gear. The drive motor drives the incomplete gear to switch between a clearance position and a transmission position in the circumferential direction.

10. A packaging machine as described in claim 8, characterized in that, The bag clamping assembly includes an opening clamping assembly, a second bag opening assembly, a second driving device, and two clamping parts. The two clamping parts are used to clamp the two sides of the packaging bag. The second driving device includes a first driving member and a second driving member arranged concentrically. The first driving member drives all bag clamping assemblies to switch synchronously between an expanded bag state and a contracted bag state. The second driving member drives the two clamping parts of all bag clamping assemblies to switch synchronously between an open clamping state and a closed clamping state.

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