Packaging machine conveying mechanism and packaging machine

Abstract

A packaging machine conveying mechanism and a packaging machine, relating to the technical field of packaging devices. The packaging machine conveying mechanism comprises a rotary base body (11), a station assembly (12) and an extension and retraction driving mechanism. The station assembly (12) is connected to the rotary base body (11) and rotates along with same, and the station assembly (12) comprises a plurality of station units (121) used for placing packaging containers. The station units (121) are driven by the extension and retraction driving mechanism to move so that the station assembly (12) is switched between an extended posture and a retracted posture. Packaging production and processing of a plurality of packaging containers can be carried out at the same time, effectively improving the packaging processing efficiency; and when the station assembly (12) is conveyed in a circulation mode, the posture of the station assembly (12) can be switched to reduce the rotation radius, so that the structural compactness is improved, the occupied spaced is reduced, and the circulation speed is increased, thereby improving the operating speed of the packaging machine and better improving the packaging production efficiency.

Description

Packaging machine conveying mechanism and packaging machine

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on September 7, 2023, with application number 202311154334.X and invention name “A Packaging Machine Conveying Mechanism and Packaging Machine”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of packaging equipment, and in particular to a packaging machine conveying mechanism and a packaging machine. Background Art

[0003] A bag-feeding automatic packaging machine is a commonly used packaging device. It typically stacks several bags of raw materials in a bag storage area. A bag-removing mechanism then automatically removes the bags one by one from the storage area. The machine then performs the following operations: bag opening, filling, sealing, and discharging. Ultimately, the machine produces finished, sealed bags filled with material. Existing bag-feeding automatic packaging machines come in various configurations, but they typically employ a single-station, loop-feeding mechanism. This means they can only perform the opening, filling, sealing, and discharging operations on a single bag at a time. This results in low efficiency and prevents efficient and stable packaging production.

[0004] Summary of the Invention

[0005] The technical problems to be solved and the technical tasks proposed by this application are to improve the existing technology and provide a packaging machine conveying mechanism and a packaging machine to solve the problem that the packaging machine in the current technology is low in efficiency and difficult to achieve efficient and stable packaging production.

[0006] To solve the above technical problems, the technical solution of this application is:

[0007] A packaging machine conveying mechanism includes a rotating base, a station assembly and an expansion and retraction drive mechanism. The rotating base is driven by the rotating drive mechanism to rotate intermittently. The station assembly is connected to the rotating base. The station assembly includes at least two station units for placing packaging containers. The station units are driven by the expansion and retraction drive mechanism to enable the station assembly to switch between an expanded posture and a collapsed posture. The rotation radius of the station assembly when in the collapsed posture is smaller than the rotation radius of the station assembly when in the expanded posture. The packaging machine conveying mechanism described in the present application can realize the packaging production and processing of multiple packaging containers at the same time. The workstation components are efficiently switched between different preset workstations under the drive of the rotating base, which can effectively improve the processing efficiency and realize efficient and stable packaging production. The workstation components can switch their postures, reduce the overall rotation radius of the workstation components when rotating with the rotating base, improve the compactness of the structure, and reduce the overall occupied volume of the equipment while increasing the packaging production volume. In addition, reducing the rotation radius during rotation can effectively reduce the moment of inertia, thereby making it easier to accelerate the rotation and increase the rotation speed. That is, it can improve the efficiency of the workstation components switching between the preset workstations, shorten the turnover and transportation time of the workstation components between the preset workstations of different packaging processing steps, thereby effectively improving the operating speed of the packaging machine and better improving the efficiency of packaging production.

[0008] Furthermore, when the workstation assembly is in an expanded posture, the workstation units in the workstation assembly are arranged in a straight line along the tangent direction of the rotating circumference of the rotating base, which is convenient for the structural design of the operating mechanism and facilitates the parallel packaging operations of multiple stations; when the workstation assembly is in a folded posture, the workstation units in the workstation assembly are arranged along the rotating circumference of the rotating base, which can effectively reduce the rotation radius, thereby reducing the occupied space of the packaging machine's conveying mechanism, and further reducing the overall volume of the packaging machine; and when the workstation assembly is in a folded posture, the workstation units are more evenly distributed in the circumference of the rotating base, which is conducive to more stable rotation and improves the stability of equipment operation.

[0009] Furthermore, the station units in the station assembly are sequentially connected, adjacent station units are hinged, and adjacent station units are relatively deflected under the drive of the expansion and contraction drive mechanism, so that the station assembly can switch between the expanded posture and the collapsed posture;

[0010] Alternatively, the workstation units in the workstation assembly are sequentially connected, with adjacent workstation units slidingly connected, with the sliding direction directed radially inward and outward from the rotating base. Adjacent workstation units slide relative to each other under the drive of the expansion and contraction drive mechanism, so that the workstation assembly switches between an expanded position and a collapsed position. The workstation units in the workstation assembly are relatively movably connected as a whole, enabling them to switch between different preset workstations under the drive of the rotating base, and also switching the position of the workstation assembly according to different needs. This not only satisfies the convenience of simultaneously performing multiple packaging operations during each packaging process, but also ensures that the rotating base has a smaller rotation radius and moment of inertia when the workstation assembly is rotated, thereby improving the compactness of the structure, reducing the occupied volume, increasing the operating speed, and further improving packaging production.

[0011] Furthermore, when the number of workstation units in the workstation assembly is even, the two middle workstation units are movably connected to the rotary base; when the number of workstation units in the workstation assembly is odd, the middle workstation unit is fixedly connected to the rotary base. This is equivalent to the middle portion of the workstation assembly being connected to the rotary base, making the workstation units more evenly distributed on the rotary base, facilitating smoother operation of the entire packaging machine's conveying mechanism and ensuring operational stability.

[0012] Furthermore, the deployment and retraction drive mechanism includes a drive member, a connecting rod assembly, and a slide. The slide is slidably connected to a rotating base, and the sliding direction of the slide is radially along the rotating circumference of the rotating base. The slide is connected to the workstation units in the workstation assembly via the connecting rod assembly. The drive member drives the slide to move radially along the rotating circumference of the rotating base to switch the workstation assembly between an deployed posture and a retracted posture. The structure is simple, easy to implement, and has a good linkage effect. By driving the slide to slide, the workstation units can be linked, and the relative position relationship between adjacent workstation units changes, causing the posture of the workstation assembly to change, ultimately achieving the switching of the workstation assembly between an deployed posture and a retracted posture.

[0013] Furthermore, the driving member includes a cam guide member, and the slide is slidably connected to the cam guide member. The structure is simple and easy to implement, and no additional power components are required. The rotary base rotates under the drive of the rotary drive mechanism, and the slide is automatically driven by the cam guide member to slide along the radial direction of the rotating circumference of the rotary base, thereby enabling the workstation assembly to switch between the expanded posture and the retracted posture during the rotation of the rotary base, that is, the posture is switched while rotating. The cam guide member is a linkage structure, which has high reliability during operation and can effectively avoid interference caused by uncoordinated cooperation.

[0014] Alternatively, the driving component includes a driving member and a pull rod, the driving member is slidably connected to the rotating base, the sliding direction of the driving member is perpendicular to the rotation plane of the rotating base, one end of the pull rod is hinged to the driving member, and the other end of the pull rod is hinged to the sliding member. The structure is simple and easy to implement, and can be better applied to situations where there are a large number of workstation units, ensuring good linkage between the workstation units to achieve the switching of the workstation assembly between the expanded posture and the folded posture, and the working mode can be flexibly selected according to needs. The method of switching posture while rotating can be adopted, that is, the driving member moves while the rotating base rotates to drive the workstation assembly to switch posture. The method of switching posture first and then rotating can also be adopted, that is, the driving member moves first to drive the workstation assembly to switch posture, and then the rotating base rotates to switch the position of the workstation assembly.

[0015] Furthermore, at least two workstation assemblies are evenly spaced along the rotational circumference of the rotary base, and the workstation assemblies are evenly distributed on the rotary base, which is conducive to smoother operation of the entire packaging machine conveying mechanism and better improvement of the efficiency of packaging processing and production.

[0016] Furthermore, the workstation unit is provided with a holding mechanism for fixing the packaging container, and the holding mechanism is utilized to keep the packaging container in a controlled state, so as to facilitate better implementation of various steps of the packaging process.

[0017] Furthermore, the retaining mechanism is an elastic bag-supporting mechanism, comprising a bag-supporting member that elastically maintains the bag in an expanded state. The bag-supporting member is configured to extend into the bag-shaped packaging container to elastically maintain the bag in an expanded state. The elastic bag-supporting mechanism effectively secures the packaging container and maintains a controlled expanded state, enabling efficient material filling operations.

[0018] Furthermore, the system further includes a release and push mechanism for driving the bag-opening member to switch to the folded state. The release and push mechanism is disposed on the workstation unit or at a predetermined station along the rotation path of the workstation assembly. This facilitates control of the state of the elastic bag-opening mechanism to smoothly perform bagging operations on bag-type packaging containers.

[0019] Furthermore, the rotation plane of the rotary base is along the horizontal direction, the workstation unit receives the packaging container along the vertical direction, and the packaging container on the workstation unit receives the filled material along the vertical direction;

[0020] Alternatively, the rotation plane of the rotary base is along the vertical direction, the workstation unit receives the packaging container along the horizontal direction, and the packaging container on the workstation unit receives the filled material along the horizontal direction;

[0021] Alternatively, the rotation plane of the rotatable base is at a 45° angle to the horizontal plane, the workstation units receive packaging containers in a horizontal direction, and the packaging containers on the workstation units receive filled materials in a vertical direction. Alternatively, the workstation units receive packaging containers in a vertical direction, and the packaging containers on the workstation units receive filled materials in a horizontal direction. The packaging machine conveying mechanism can have various configurations to be applicable to different scenarios, and an appropriate structure can be selected based on the type of packaging container and the type of material.

[0022] A packaging machine comprises the above-mentioned packaging machine conveying mechanism, wherein each preset workstation on the conveying path of the packaging machine conveying mechanism is respectively provided with an operating mechanism for performing different packaging processing steps.

[0023] Compared with the prior art, the advantages of this application are:

[0024] The packaging machine conveying mechanism and packaging machine described in this application can simultaneously perform packaging production and processing on several packaging containers, effectively improve the processing efficiency, and realize efficient and stable packaging production. When the station components are circulated and conveyed, the posture of the station components can be switched to reduce the turning radius, improve the compactness of the structure, and reduce the volume occupied by the equipment, which is conducive to increasing the circulation speed, increasing the operating speed of the packaging machine, and better improving the packaging production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] FIG1 is a schematic structural diagram of a conveying mechanism of a packaging machine of the present application, wherein the station components are in an expanded position;

[0026] FIG2 is a schematic diagram of the back side structure of FIG1 ;

[0027] FIG3 is a schematic structural diagram of the hidden rotating base in FIG1 ;

[0028] FIG4 is a schematic structural diagram of the conveying mechanism of the packaging machine shown in FIG1 , with the station components in a retracted position;

[0029] FIG5 is a schematic structural diagram of another packaging machine conveying mechanism with the station assembly in an expanded position;

[0030] FIG6 is a schematic structural diagram of the conveying mechanism of the packaging machine shown in FIG5 , wherein the station components are in a retracted position;

[0031] FIG7 is a schematic structural diagram of another packaging machine conveying mechanism with the station assembly in an expanded position;

[0032] FIG8 is a schematic diagram of the overall structure of an embodiment of the packaging machine of the present application;

[0033] FIG9 is a schematic structural diagram of a packaging container supply mechanism of the packaging machine shown in FIG8 ;

[0034] FIG10 is a schematic structural diagram of the material filling mechanism of the packaging machine shown in FIG8 ;

[0035] Figure 11 is a schematic structural diagram of another packaging machine conveying mechanism;

[0036] Figure 12 is a schematic structural diagram of another packaging machine conveying mechanism;

[0037] Figure 13 is a schematic structural diagram of another packaging machine conveying mechanism;

[0038] FIG14 is a schematic structural diagram of another packaging machine conveying mechanism with the station assembly in an expanded position;

[0039] FIG15 is a schematic structural diagram of the conveying mechanism of the packaging machine shown in FIG14 , with the station components in a retracted position;

[0040] FIG16 is a schematic structural diagram of another embodiment of a packaging machine;

[0041] FIG17 is a schematic structural diagram of another embodiment of a packaging machine;

[0042] FIG18 is a schematic structural diagram of another embodiment of a packaging machine;

[0043] FIG19 is a schematic structural diagram of another packaging machine conveying mechanism with the station assembly in an expanded position;

[0044] FIG20 is a schematic structural diagram of the conveying mechanism of the packaging machine shown in FIG19 with the station components in a retracted position;

[0045] Figure 21 is a schematic structural diagram of another packaging machine conveying mechanism.

[0046] In the figure: packaging machine conveying mechanism 1, rotating base 11, station assembly 12, station unit 121, bag supporting member 122, release pushing mechanism 123, connecting rod assembly 131, slide 132, cam guide member 133, driving member 134, pull rod 135, linear telescopic driving mechanism 136, telescopic assembly 137, packaging container supply mechanism 2, bag storage bin 21, bag taking suction cup 22, bag opening suction cup member 23, bag loading moving mechanism 24, material filling mechanism 3, material conveyor belt 31, pushing assembly 32, discharge conveyor belt 4, sealing mechanism 5, limit baffle 51, and stretching mechanism 52. DETAILED DESCRIPTION

[0047] The following will be combined with the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0048] The embodiments of the present application disclose a packaging machine conveying mechanism and a packaging machine, which can simultaneously carry out packaging production of several packaging bags, greatly improve operating efficiency, and can achieve efficient and stable packaging production. In addition, the structure is compact, the occupied volume is reduced, the moment of inertia is small, the operation is smooth, the power consumption is low, and the complexity and cost of the equipment are reduced.

[0049] As shown in Figures 1 to 4, a packaging machine conveying mechanism 1 mainly includes a rotary base 11, a station assembly 12 and an expansion and retraction drive mechanism. The rotary base 11 is driven to rotate intermittently by the rotary drive mechanism. The rotary drive mechanism can be specifically composed of a servo motor, a reducer and a cam divider to achieve high-precision rotation of the rotary base 11. The station assembly 12 is connected to the rotary base 11. The station assembly 12 includes at least two station units 121 for placing packaging containers. The station units 121 in the station assembly 12 are movable relative to each other. When the relative position relationship of the station units 121 in the station assembly 12 changes, the overall posture of the station assembly 12 changes. Specifically, the station units 121 are driven by the expansion and retraction drive mechanism to switch the station assembly 12 between an expanded posture and a retracted posture. The rotation radius of the station assembly 12 when in the retracted posture is smaller than the rotation radius of the station assembly 12 when in the expanded posture.

[0050] The above-mentioned packaging machine conveying mechanism is used in the packaging machine. In addition to the packaging machine conveying mechanism, the packaging machine also includes an operating mechanism. The operating mechanism includes several types that perform different packaging processing procedures. Different operating mechanisms are respectively arranged at each preset workstation on the conveying path of the packaging machine conveying mechanism. Each operating mechanism respectively includes a mechanism unit corresponding to the number of workstation units 121 in the workstation assembly 12. When the workstation assembly 12 rotates to the preset workstation and is in an expanded posture, each mechanism unit respectively performs a packaging processing procedure on each workstation unit 121.

[0051] Specifically, the workstation assembly 12 is connected to the rotary base 11 to rotate along with the rotary base 11 , and the workstation assembly 12 and the rotary base 11 are combined to form an integral rotating body. When the workstation assembly 12 is in the expanded posture, the workstation unit 121 in the workstation assembly 12 is in a stretched state to facilitate the operating mechanism to perform various packaging processing procedures (such as packaging container loading and material filling, etc.). At this time, the rotating body has a larger turning radius and requires a larger space when rotating, resulting in the packaging machine conveying mechanism requiring a larger activity space, which leads to a larger overall volume of the packaging machine. The large turning radius also leads to a large moment of inertia. The packaging machine conveying mechanism is an intermittent motion mechanism. When the rotating base 11 rotates and transports the workstation assembly 12 to the preset workstation, it needs to stop at the preset workstation to perform various packaging processing procedures. In other words, the rotating body is in a state of frequent switching between motion and stillness. The large moment of inertia makes the acceleration of the rotating body from stillness to motion slower and the deceleration from motion to stillness slower, thereby affecting the overall rotation rate of the rotating body, that is, affecting the efficiency of the workstation assembly 12 circulating between the preset workstations, thereby affecting the processing efficiency of packaging production. After completing various packaging operations, the station assembly 12 is driven by the expansion and retraction drive mechanism to a retracted position. Driven by the expansion and retraction drive mechanism, the station units 121 within the station assembly 12 move radially inward of the rotating base 11, achieving a relatively retracted state. This effectively reduces the rotational radius of the rotating element, minimizing the space required for rotation, and thus the space required for the packaging machine's conveyor mechanism, ultimately reducing the overall size of the packaging machine. Furthermore, the reduced rotational radius reduces the moment of inertia, enabling faster acceleration and deceleration of the rotating element. This increases the overall rotational speed of the rotating element, improving the efficiency of the station assembly 12's circulation between the pre-set workstations and further enhancing packaging production efficiency.

[0052] In one embodiment, as shown in Figures 1 to 4, the workstation units 121 in the workstation assembly 12 are connected in sequence, adjacent workstation units 121 are hinged, and adjacent workstation units 121 are relatively deflected under the drive of the expansion and contraction drive mechanism to enable the workstation assembly 12 to switch between an expanded posture and a collapsed posture. The work station units 121 in the work station assembly 12 are connected to form a long string structure. Since adjacent work station units 121 are hinged, the overall posture of the work station assembly 12 can be changed when the adjacent work station units 121 are relatively deflected. Specifically, the hinge axis between adjacent work station units 121 is perpendicular to the rotation plane of the rotating base 11, so that the plane where the work station unit 121 performs deflection activity is parallel to the rotation plane of the rotating base 11, that is, the work station assembly 12 is active in a plane parallel to the rotation plane of the rotating base 11 to achieve posture switching. The work station units 121 in the work station assembly 12 can be arranged along a straight line, and the work station units 121 in the work station assembly 12 can also be arranged in a curve. In order to facilitate the structural design of the operating mechanism and the parallel packaging processing of multiple stations, it is preferred that the station units 121 in the station assembly 12 are in an expanded position when they are arranged in a straight line, so that each operating mechanism can set up a parallel arrangement of the mechanism units to perform the packaging processing on each station unit 121. Furthermore, the station units 121 in the station assembly 12 are arranged in a straight line along the tangent direction of the rotation of the rotating base 11. This state facilitates the structural design of the operating mechanism. The corresponding mechanism units in each operating mechanism are arranged in parallel along a straight line, which is easy to design and implement, has a compact structure, and can better avoid interference. When the station assembly 12 rotates to the preset workstation and is in the expanded position with the station units 121 arranged in a straight line, each station unit 121 corresponds to each mechanism unit in the operating mechanism one by one, so that each mechanism unit performs the packaging processing on each station unit 121. When the workstation assembly 12 needs to be rotated from one preset workstation to the next preset workstation, the workstation assembly 12 is switched to a retracted posture to reduce the turning radius. Specifically, the workstation units 121 in the workstation assembly 12 are in a retracted posture when arranged along the circumferential direction of the rotating base 11. That is, the workstation units 121 that were originally arranged in a straight line along the tangent direction of the rotating circumference of the rotating base 11 are deflected toward the radial inner side of the rotating base 11, and finally reach the posture where the workstation units 121 are arranged along the circumferential direction of the rotating base 11, which effectively reduces the turning radius of the rotating body, reduces the space required for the rotation activity, reduces the volume of the conveying mechanism of the packaging machine, and reduces the moment of inertia so as to enable faster rotation switching, thereby improving the efficiency of the packaging processing.

[0053] More specifically, as shown in Figure 5, when the number of workstation units 121 in the workstation assembly 12 is even, the two workstation units 121 in the middle are hingedly connected to the rotating base 11. In this embodiment, the workstation units 121 in the workstation assembly 12 are a series structure connected in sequence and adjacent workstation units 121 are hingedly connected. When the two workstation units 121 in the middle are hingedly connected to the rotating base 11, the two workstation units 121 in the middle are still in a hinged relationship that can deflect relative to each other. The two workstation units 121 in the middle are hingedly connected to the rotating base 11, which is equivalent to the middle part of the workstation assembly 12 being connected to the rotating base 11. Therefore, the workstation units 121 in the workstation assembly 12 are symmetrically distributed on both sides of the connection between the workstation assembly 12 and the rotating base 11, so that the workstation units 121 are more evenly distributed on the rotating base 11, which is conducive to a smoother operation of the conveying mechanism of the entire packaging machine. As shown in Figure 1, when the number of workstation units 121 in the workstation assembly 12 is odd, the middle workstation unit 121 is fixedly connected to the rotary base 11, and the adjacent workstation units 121 on both sides of the middle workstation unit 121 are hinged to the middle workstation unit 121 or hinged to the rotary base 11. Similarly, it is equivalent to the middle part of the workstation assembly 12 being connected to the rotary base 11, and the workstation units 121 in the workstation assembly 12 are also symmetrically distributed at the connection between the workstation assembly 12 and the rotary base 11, so that the workstation units 121 are more evenly distributed on the rotary base 11, which is conducive to a more stable operation of the entire packaging machine conveying mechanism. Regardless of the number of workstation units 121 in the workstation assembly 12, when the workstation assembly is in an expanded posture, the workstation units 121 in the workstation assembly 12 are arranged in a straight line along the rotation tangent of the connection between the workstation assembly 12 and the rotating base 11, and when the workstation assembly switches to a folded posture, the workstation units 121 on both sides of the connection between the workstation assembly 12 and the rotating base 11 are deflected radially inward to achieve a posture of being arranged along the rotation circumference of the rotating base 11. Of course, in one embodiment, as shown in Figure 7, the work station unit 121 near the end of the work station assembly 12 can also be connected to the rotating base 11. Similarly, the work station units 121 in the work station assembly 12 are in an expanded posture when they are arranged in a straight line along the tangent of the rotating circumference of the rotating base 11, and are in a folded posture when they are arranged along the rotating circumference of the rotating base 11. It can also facilitate multi-station packaging processing while reducing the rotation radius to reduce the occupied volume and increase the rotation rate. However, relatively speaking, the work station units 121 are not evenly distributed on the rotating base 11, and the stability during operation is slightly weaker than the schemes shown in Figures 1 and 5.

[0054] In one embodiment, as shown in Figure 8, the operating mechanism of the packaging machine includes a packaging container supply mechanism 2 and a material filling mechanism 3. The packaging container supply mechanism 2 includes supply units corresponding to the number of station units 121 in the station assembly 12, so as to respectively load the packaging containers into each station unit 121 of the station assembly 12, and the material filling mechanism 3 includes filling units corresponding to the number of station units 121 in the station assembly 12, so as to respectively fill the packaging containers on each station unit 121 of the station assembly 12 with materials. The packaging container supply mechanism 2, the material filling mechanism 3 and other mechanisms used for packaging and processing operations have relatively complex structures and relatively large volumes. If the packaging and processing operations are directly performed on each workstation unit 121 in the workstation assembly 12 in the retracted posture, the supply units of the packaging container supply mechanism 2 and the filling units of the material filling mechanism 3 will be distributed more scattered and less compact, making the overall structure of the packaging machine loose, the layout unreasonable, and occupying a large space. Each supply unit of the packaging container supply mechanism 2 and each filling unit of the material filling mechanism 3 need to move synchronously. When the supply units of the packaging container supply mechanism 2 and the filling units of the material filling mechanism 3 are scattered, it is necessary to add a linkage mechanism, which makes the structure of the packaging machine more complicated and the equipment occupies a larger volume. Therefore, in order to better improve the overall structural compactness of the packaging machine, it is preferred that the supply units of the packaging container supply mechanism 2 are arranged in parallel along a straight line, and the filling units of the material filling mechanism 3 are arranged in parallel along a straight line, which can make the packaging container supply mechanism 2, the material filling mechanism 3, etc. more compact and easy to design and arrange. Correspondingly, the workstation assembly 12 needs to be in an expanded posture so that each workstation unit 121 in the workstation assembly 12 corresponds one-to-one to each supply unit of the packaging container supply mechanism 2, and the workstation assembly 12 needs to be in an expanded posture so that each workstation unit 121 in the workstation assembly 12 corresponds one-to-one to each filling unit of the material filling mechanism 3, thereby efficiently carrying out various packaging processing steps, and then the workstation assembly 12 switches to a folded posture when circulating between the preset workstations, thereby improving the efficiency of circulation and better improving the processing efficiency of packaging production.

[0055] Furthermore, as shown in Figures 1 and 8, two workstation assemblies 12 are evenly spaced along the circumference of the rotation of the rotating base 11. Two preset workstations are provided along the conveying path of the packaging machine's conveyor mechanism 1. Thus, the rotating base 11 drives the workstation assemblies 12 to rotate 180°, enabling the workstation assemblies 12 to switch between the preset workstations. A packaging container supply mechanism 2 is located at one preset workstation, while a material filling mechanism 3 is located at another preset workstation. When one of the workstation assemblies 12 rotates to the preset workstation where the packaging container supply mechanism 2 is located, the other workstation assembly 12 rotates to the preset workstation where the material filling mechanism 3 is located. This allows different packaging processes to proceed in parallel, preventing idle workstations and improving packaging production efficiency. When the number of workstation assemblies 12 and the number of preset workstations is large, when one of the workstation assemblies 12 rotates to one of the preset workstations, a corresponding workstation assembly 12 rotates to its position at each of the remaining preset workstations. This allows different packaging processes to proceed in parallel, improving packaging production efficiency. Furthermore, the number of the workstation components 12 can be the same as the number of the preset workstations, or the number of the workstation components 12 can be more than the number of the preset workstations, ensuring that all the preset workstations have their workstation components 12 rotated into place at the same time, so that the operating mechanisms at each preset workstation can perform the packaging processing steps simultaneously. In one embodiment, as shown in Figure 11, four workstation assemblies 12 are evenly spaced on the rotating base 11, and there are only two preset workstations, and these two preset workstations are arranged at both ends of the diameter direction of the rotating base 11. The workstation assembly 12 is completely switched to the expanded state when it rotates to the preset workstation, and is completely switched to the folded state in the direction perpendicular to the line connecting the two preset workstations. In this way, the rotating base 11 needs to drive the workstation assembly 12 to rotate 180° to realize the turnover switching of the workstation assembly 12 between the preset workstations, but because the number of workstation assemblies 12 is greater than that of the preset workstations, the single-step action of the rotating base 11 only needs to rotate 90° to enable each workstation assembly 12 to pass through each preset workstation in turn to perform the packaging processing procedure.

[0056] The workstation units 121 in the workstation assembly 12 are in a relatively movable structural state, so that the relative position relationship between the workstation units 121 changes to achieve the change of the posture of the workstation assembly 12. In order to achieve automation, the workstation assembly 12 is driven by an expansion and contraction drive mechanism to move to switch the posture. As shown in Figures 1 to 4, the expansion and contraction drive mechanism includes a drive member, a connecting rod assembly 131 and a slide 132. The slide 132 is slidably connected to the rotating base 11. The sliding direction of the slide 132 is along the radial direction of the rotating circumference of the rotating base 11. The slide 132 is connected to the workstation units 121 in the workstation assembly 12 through the connecting rod assembly 131. The drive member drives the slide 132 to move in the radial direction of the rotating circumference of the rotating base 11 to enable the workstation assembly 12 to switch between the expanded posture and the retracted posture. The driving component can be of various types. As shown in Figure 3, the driving component is a stationary cam guide component 133. The cam guide component 133 can be a guide groove or a guide rail. The slide 132 is slidably connected to the cam guide component 133. The slide 132 rotates with the rotating base 11 and is driven by the cam guide component 133 to move. The structure is simple, easy to implement, and does not require additional power components. The cam guide member 133 can be specifically arranged on a stationary bracket plate, and the path of the cam guide member 133 is annular around the rotation circumference of the rotary base 11. The distance from each point on the path of the cam guide member 133 to the rotation center of the rotary base 11 changes along the path of the cam guide member 133. The rotary base 11 rotates under the drive of the rotary drive mechanism, and the slide 132 slides along the cam guide member 133. The cam guide member 133 drives the slide 132 to slide radially relative to the rotary base 11 along the rotation circumference of the rotary base 11, so that the slide 132 drives the workstation unit 121 to move through the connecting rod assembly 131, thereby causing the workstation assembly 12 to move as the rotary base 11 rotates. The switching between the expanded posture and the folded posture adopts the method of switching the posture while rotating. The cam guide member 133 is a linkage structure with high reliability during operation, which can effectively avoid interference caused by incoordination. In this embodiment, the cam guide member 133 is roughly elliptical. When the rotating base 11 drives the workstation assembly 12 to rotate to the long diameter position of the ellipse, the workstation assembly 12 reaches a fully expanded expanded posture, and when the rotating base 11 drives the workstation assembly 12 to rotate to the short diameter position of the ellipse, the workstation assembly 12 reaches a fully folded folded posture. During the rotation between the short diameter of the ellipse and the long diameter of the ellipse, the workstation assembly 12 is in a gradual posture change process, that is, the workstation assembly 12 gradually changes its posture during the rotation of the rotating base 11.More specifically, referring to FIG1 , the workstation assembly 12 includes three workstation units 121, the middle workstation unit 121 is fixedly arranged on the rotary base 11, and a workstation unit 121 is hinged on both sides of the middle workstation unit 121, and the slide 132 is slidably connected to the guide rail provided on the rotary base 11. The connecting rod assembly 131 is composed of a plurality of connecting rods. As shown in FIG1 and FIG3 , a specific embodiment of the connecting rod assembly 131 includes a first connecting rod, a second connecting rod and a third connecting rod, one end of the first connecting rod is hinged to the slide 132, the other end of the first connecting rod is hinged to the middle of the second connecting rod, and one end of the second connecting rod is hinged to the rotary base. 11, the other end of the second link is hinged to one end of the third link, and the other end of the third link is hinged to the work station unit 121 on the left end. Similarly, the work station unit 121 on the right end is connected to the slide 132 through another group of first links to third links. When the slide 132 slides relative to the rotating base 11, the slide 132 drives the second link to deflect relative to the rotating base 11 through the first link, and then the second link pulls the work station unit 121 on the left end to deflect relative to the work station unit 121 in the middle through the third link, that is, the work station unit 121 is driven by the expansion and contraction drive mechanism to enable the work station assembly 12 to switch between the expanded posture and the collapsed posture. The connecting rod assembly 131 can also adopt other embodiments. The connecting rod assembly 131 and the slide 132 are combined to form a crank-connecting rod mechanism to realize the mutual conversion function between rotation and linear movement. Taking the work station assembly 12 as an example, which includes three work station units 121, the middle work station unit 121 is fixedly set on the rotating base 11, and a work station unit 121 is hinged on both sides of the middle work station unit 121. The connecting rod assembly 131 can be composed of only a single connecting rod, one end of which is hinged to the slide 132, and the other end of the connecting rod is hinged to the work station unit 121 on the middle side of the work station assembly 12. When the slide 132 slides relative to the rotating base 11, it can also drive the work station unit 121 to deflect to realize the switching of the work station assembly 12 between the expanded posture and the retracted posture.In addition, the cam guide member 133 can also be driven to rotate by an additional power mechanism, so that the work station assembly 12 can first switch from the expanded posture to the folded posture and then the rotary base 11 can be rotated. Specifically, before the rotary base 11 rotates, the cam guide member 133 is driven by the power mechanism to rotate relative to the rotary base 11, so that the cam guide member 133 drives the slide 132 to slide relative to the rotary base 11 to switch the posture of the work station assembly 12. When the work station assembly 12 switches to the folded posture, the rotary base 11 starts to rotate again, and at this time the cam guide member 133 rotates synchronously with the rotary base 11 to keep the work station assembly 12 in the folded posture. When the work station assembly 12 is rotated into place, the cam guide member 133 rotates relative to the rotary base 11 again to switch the work station assembly 12 to the expanded posture for packaging processing.

[0057] Alternatively, as shown in Figures 5 and 6, the driving component includes a driving member 134 and a pull rod 135, the driving member 134 is slidably connected to the rotating base 11, the sliding direction of the driving member 134 is perpendicular to the rotation plane of the rotating base 11, one end of the pull rod 135 is hinged to the driving member 134, and the other end of the pull rod 135 is hinged to the sliding member 132. Specifically, in FIG5 , the workstation assembly 12 includes six workstation units 121 that are hingedly connected in sequence. The workstation units 121 in the upper area of ​​the figure are defined as workstation units No. 1 to No. 6 from left to right. The two workstation units No. 3 and No. 4 in the middle are hinged on the rotary base 11. The rotary base 11 is provided with a guide rod perpendicular to the rotation plane of the rotary base 11. The driving member 134 is a sleeve member that is slidably sleeved on the guide rod. The sliding member 132 is provided with a plurality of sliding members 132 and is spaced apart along the rotation circumference of the rotary base 11. The sliding member 1 32 is specifically provided with five, each slide 132 is respectively connected to the rotary base 11 along the radial sliding of the rotating circumference of the rotary base 11, and the slides 132 in the upper area of ​​the definition figure are slides No. 1 to No. 5 from left to right, and the connecting rod assembly 131 includes connecting rods No. 1 to No. 10 from left to right. Specifically, one end of the No. 1 connecting rod is hinged to the No. 1 station unit, the other end of the No. 1 connecting rod is hinged to the No. 1 slide, one end of the No. 2 connecting rod is hinged to the No. 2 station unit, the other end of the No. 2 connecting rod is hinged to the No. 1 slide, and one end of the No. 3 connecting rod is hinged to the No. 2 station unit. , the other end of the No. 3 connecting rod is hinged to the No. 2 slide, one end of the No. 4 connecting rod is hinged to the No. 3 workstation unit, the other end of the No. 4 connecting rod is hinged to the No. 2 slide, one end of the No. 5 connecting rod is hinged to the No. 3 workstation unit, the other end of the No. 5 connecting rod is hinged to the No. 3 slide, one end of the No. 6 connecting rod is hinged to the No. 4 workstation unit, the other end of the No. 6 connecting rod is hinged to the No. 3 slide, one end of the No. 7 connecting rod is hinged to the No. 4 workstation unit, the other end of the No. 7 connecting rod is hinged to the No. 4 slide, one end of the No. 8 connecting rod is hinged to the No. 5 workstation unit, the other end of the No. 8 connecting rod is hinged to the No. 4 slide, one end of the No. 9 connecting rod It is hinged to the No. 5 workstation unit, the other end of the No. 9 connecting rod is hinged to the No. 5 slide, one end of the No. 10 connecting rod is hinged to the No. 6 workstation unit, and the other end of the No. 10 connecting rod is hinged to the No. 5 slide, and the No. 1 to No. 5 slides are respectively connected to the driving member 134 through different pull rods. The pull rod connected to the No. 1 and No. 5 slides is connected to the far end of the driving member 134 away from the rotating base 11, the pull rod connected to the No. 3 slide is connected to the near end of the driving member 134 close to the rotating base 11, and the pull rod connected to the No. 2 and No. 4 slides is connected between the far end and the near end of the driving member 134. When the driving member 134 slides along the guide rod, it drives each slide 132 to move, and then the slide 132 drives the workstation unit 121 to deflect through the connecting rod assembly 131, and finally realizes the switching of the workstation assembly 12 between the expanded posture and the collapsed posture.When the above-mentioned extension and retraction drive mechanism is used, the working mode can be flexibly selected according to needs. The method of switching the posture while rotating can be adopted, that is, the driving member 134 moves while the rotary base 11 rotates to drive the workstation assembly 12 to switch the posture. The method of switching the posture first and then rotating can also be adopted, that is, the driving member 134 first moves to drive the workstation assembly 12 to switch the posture, and then the rotary base 11 rotates to switch the position of the workstation assembly 12, so as to flexibly meet different needs. The movement of the driving member 134 in the rotation plane perpendicular to the rotation plane of the rotary base 11 can be driven by a linear telescopic mechanism. The telescopic direction of the linear telescopic mechanism is along the axial direction of the guide rod. The linear telescopic mechanism can be a cylinder, an electric push rod, etc., or a cam groove mechanism that is stationary relative to the rotary base 11. When the driving member 134 rotates together with the rotary base 11, the cam groove mechanism automatically drives the driving member 134 to move along the guide rod.

[0058] As shown in Figure 12, the driving component can directly adopt a linear telescopic driving mechanism 136. The linear telescopic driving mechanism 136 can be a cylinder, an electric push rod, etc. The linear telescopic driving mechanism 136 is arranged on the rotating base 11. The telescopic direction of the linear telescopic driving mechanism 136 is along the sliding direction of the slide 132 to drive the slide 132 to move. The structure is simple and easy to implement. However, the linear telescopic drive mechanism 136 is an additional power mechanism, and the linear telescopic drive mechanism 136 requires power supply, that is, it needs an air pipe or wire to be connected to the linear telescopic drive mechanism 136, and the linear telescopic drive mechanism 136 rotates with the rotating base 11, which will relatively increase the difficulty of wiring design. The use of the linear telescopic drive mechanism 136 can flexibly select the working mode according to needs, and can adopt a method of switching posture while rotating, that is, the linear telescopic drive mechanism 136 moves while the rotating base 11 rotates to drive the work station component 12 to switch posture. It can also adopt a method of switching posture first and then rotating, that is, the linear telescopic drive mechanism 136 first moves to drive the work station component 12 to switch posture, and then the rotating base 11 rotates to switch the position of the work station component 12.

[0059] As shown in Figure 13, the expansion and contraction drive mechanism can also be a telescopic component 137 directly arranged between each adjacent work station unit 121. The telescopic component 137 can specifically be a cylinder, an electric push rod, etc. One end of the telescopic component 137 is hinged to one work station unit 121, and the other end of the telescopic component 137 is hinged to the adjacent work station unit 121. The expansion and contraction of the telescopic component 137 can drive the adjacent work station units 121 to deflect relative to each other, thereby driving the work station component 12 to switch between the expanded posture and the retracted posture.

[0060] In one embodiment, as shown in Figures 1 and 8, the rotation plane of the rotating base 11 is along the vertical direction, the work station unit 121 receives the packaging container along the horizontal direction, and the packaging container on the work station unit 121 receives the filled material along the horizontal direction. Specifically, preset workstations are respectively set at the highest point and the lowest point of the conveying path of the packaging machine conveying mechanism 1, and a packaging container feeding mechanism 2 is set at the preset workstation at the highest point, and a material filling mechanism 3 is set at the preset workstation at the lowest point. Then, the packaging container feeding mechanism 2 loads the packaging container to the work station unit 121 along the horizontal direction, and the material filling mechanism 3 fills the material into the packaging container on the work station unit 121 along the horizontal direction. This structure is suitable for filling bulk materials. According to the execution flow of the packaging processing procedure, the workstation component 12 rotates to the preset workstation where the packaging container supply mechanism 2 is located, switches to the expanded posture, and then the packaging container supply mechanism 2 transports the packaging container and places it in each workstation unit 121, and then the rotating base 11 drives the workstation component 12 to rotate to switch positions. During the rotation process of the switching position, the workstation component 12 switches to the retracted posture to reduce the rotation radius and rotational inertia. When the workstation component 12 with the packaging container is placed rotates to the preset workstation where the material filling mechanism 3 is located, the workstation component 12 switches to the expanded posture again, and then the material filling mechanism 3 fills the material into the packaging container of the workstation unit 121.

[0061] The workstation unit 121 is provided with a retaining mechanism for securing the packaging container. This retaining mechanism keeps the packaging container in a controlled state, facilitating the various steps of the packaging production process. The packaging container can be a box-type packaging container with a fixed volume, or a bag-type packaging container (i.e., a packaging bag). For a box-type packaging container, the workstation unit 121 can simply be a cavity for accommodating the box-type packaging container, eliminating the need for additional clamping and securing the box-type packaging container. For a packaging bag, the retaining mechanism can be a clamp that grips both edges of the packaging bag. In addition, the holding mechanism can also be the elastic bag-stretching mechanism shown in Figure 1. The elastic bag-stretching mechanism includes a bag-stretching member 122 that is elastically maintained in an expanded state. The bag-stretching member 122 is used to extend into the packaging bag to elastically maintain the packaging bag in an expanded state. The bag-stretching member 122 is used to both secure the packaging bag and keep the packaging bag in a stable, controlled expanded state, facilitating efficient material filling operations. It is suitable for filling bulk materials, especially for applications where materials are filled horizontally. The packaging bag is held in an expanded state at the mouth by the elastic bag-stretching mechanism. The bag-stretching member 122 is detachably connected to the workstation unit 121, and the size of the bag-stretching member 122 can be easily changed as needed, allowing for flexible adaptation to the requirements of packaging materials of different specifications. The elastic bag-supporting mechanism is oriented perpendicular to the rotational plane of the rotatable base 11. That is, the opening of the packaging belt mounted on the elastic bag-supporting mechanism is oriented at a 90-degree angle to the rotational plane of the rotatable base 11. Since the rotational plane of the rotatable base 11 is vertical, the opening of the packaging bag mounted on the elastic bag-supporting mechanism is oriented horizontally, allowing bulk materials to be pushed into the packaging bag laterally for filling. A release and push mechanism 123 is also provided, cooperating with the elastic bag-supporting mechanism. This release and push mechanism 123 is used to push the bag-supporting member 122 to a collapsed state. As shown in FIG14 , this release and push mechanism 123 is disposed on the workstation unit 121. Alternatively, as shown in FIG1 , this release and push mechanism 123 can be located at a desired pre-set workstation. The latter approach requires fewer release and push mechanisms 123, reduces the load on the rotatable base 11, and helps reduce the power consumption required to drive the rotatable base 11. The release and pushing mechanism 123 can be specifically a cylinder-driven pushing mechanism that pushes the bag-supporting member 122 to overcome the force of the elastic member, thereby switching the elastic bag-supporting mechanism to the retracted state. When placing a packaging bag on the elastic bag-supporting mechanism on the workstation unit 121, the release and pushing mechanism 123 is first activated to switch the bag-supporting member 122 to the retracted state, ensuring that the packaging bag can be easily and smoothly placed on the elastic bag-supporting mechanism. The pushing mechanism 123 is then released and reset to cancel the pushing action on the bag-supporting member 122, causing the bag-supporting member 122 to elastically return to the expanded state, thereby securing and maintaining the packaging bag in the expanded state.

[0062] More specifically, as shown in FIG9 , the supply unit in the packaging container supply mechanism 2 includes a bag storage bin 21, a bag taking assembly and a bag loading assembly. The bag storage bin 21 is used to stack packaging bags. The lower portion of the bag storage bin 21 is provided with an outlet for taking out packaging bags. The bag taking assembly includes a bag taking suction cup 22 that reciprocates at the outlet of the bag storage bin 21 to take out packaging bags one by one. Specifically, the bag taking suction cup 22 is connected to a rotating shaft, and the rotating shaft is driven by a cylinder to make the bag taking suction cup 22 reciprocate in a deflected manner. The bag taking suction cup 22 moves forward to The bag storage bin 21 absorbs the packaging bag at the outlet, and then the bag taking suction cup 22 retreats away from the outlet of the bag storage bin 21 to take the packaging bag out of the outlet of the bag storage bin 21; the bag upper assembly includes a bag opening suction cup part 23 that can open and close and a bag upper moving mechanism 24 that drives the bag opening suction cup part 23 to move. The bag opening suction cup part 23 moves back and forth between the position of the bag taking suction cup 22 and the position of the work station component 12 at the preset work station under the drive of the bag upper moving mechanism 24. The bag opening suction cup part 23 receives the bag-shaped bag taken out by the bag taking suction cup 22. The bag opening sucker 23 is moved to the position of the bag taking sucker 22, and the two groups of suckers of the bag opening sucker 23 respectively adsorb the two side surfaces of the taken out packaging bag, and then the bag taking sucker 22 releases the packaging bag, and the two groups of suckers of the bag opening sucker 23 open to open the mouth of the packaging bag, and then the bag opening sucker 23 is driven by the bag upper moving mechanism 24 to move to the station assembly 12 at the preset station, and the elastic bag supporting mechanism on the station unit 121 is switched to the folded state under the action of the releasing pushing mechanism 123, and then The packaging bag is put onto the elastic bag-holding mechanism, the pushing mechanism 123 is released to reset, and the pushing of the bag-holding component 122 is released. The bag-holding component 122 elastically recovers to the expanded state to fix the packaging bag on the work station unit 121, and the bag-opening suction cup component 23 releases the packaging bag and is driven by the bag-loading moving mechanism 24 to move away from the work station component 12 at the preset work station. The above steps can complete the packaging processing step of loading the bag, and the packaging bag is placed on the work station unit 121 and is stably in a controlled expanded state, which is convenient for subsequent packaging processing steps.

[0063] As shown in Figure 10, the material filling mechanism 3 includes a material conveyor belt 31 and a pushing component 32 corresponding to the number of station units 121 in the station assembly 12. The pushing component 32 is the filling unit referred to. The conveying direction of the material conveyor belt 31 is along the horizontal direction. The materials are placed on the material conveyor belt 31 at intervals for intermittent conveying. The station units 121 in the station assembly 12 in the preset working state of the material filling mechanism 3 and in the expanded posture are arranged in a straight line. The straight arrangement direction of the station units 121 is parallel to the conveying direction of the material conveyor belt 31, and the pushing direction of the pushing component 32 is perpendicular to the material conveying direction. When the conveying direction of the belt 31 rotates to the preset workstation where the material filling mechanism 3 is located and the workstation component 12 is in the expanded posture, the workstation unit 121 is located on the pushing path of the pushing component 32, and the mouth of the packaging container on the workstation unit 121 is facing the side where the pushing component 32 is located. The pushing component 32 pushes the material on the material conveyor belt 31 to fill the packaging container on the workstation unit 121, and the pushing component 32 pushes the packaging container out of the elastic bag-supporting mechanism. In short, the material filling mechanism 3 is used for both material filling and bag return. After being filled with material, the packaging container immediately separates from the workstation unit to enter the next process for processing. Specifically, the pushing assembly 32 includes a push rod and a linear pushing drive mechanism. In order to improve the compactness of the structure and the synchronization of the movement, all the pushing assemblies 32 share a linear pushing drive mechanism. The push rods respectively matched with each work station unit 121 are connected to the bracket, and then the bracket is driven by the linear pushing drive mechanism to move. The bracket is also slidably connected to a guide sliding mechanism parallel to the linear pushing drive mechanism to ensure the accuracy and stability of the push rod when performing the pushing action.

[0064] Furthermore, as shown in FIG10 , a discharge conveyor belt 4 is provided at the preset workstation where the material filling mechanism 3 is located. The discharge mechanism is used to receive the packaging bags filled with materials that have been pushed out. The discharge conveyor belt 4 simultaneously receives the packaging bags on all the workstation units 121 in the workstation assembly 12. The structure is simple, compact, and easy to implement. A sealing mechanism 5 is also provided at the inlet end of the discharge conveyor belt 4, so that the packaging bags filled with materials that have just been pushed out are first sealed by the sealing mechanism 5 and then sent out by the discharge conveyor belt 4. More specifically, a limit baffle 51 that can be raised and lowered is provided above the inlet end of the discharge conveyor belt 4 to limit and block the packaging bags filled with materials that enter the inlet end of the discharge conveyor belt 4 so that the mouth of the packaging bag is exactly at the sealing mechanism 5, thereby ensuring accurate sealing processing. In order to improve the quality of the sealing process, a stretching mechanism 52 is also provided at the sealing mechanism 5, and the stretching mechanism 52 includes a left stretching clamp and a right stretching clamp arranged in pairs. The left stretching clamp and the right stretching clamp are used to clamp the two side edges of the opening of the packaging bag respectively, and the left stretching clamp and the right stretching clamp can move toward each other to expand and close, so that the opening of the packaging bag can be tightened to maintain a flat state for sealing, thereby improving the sealing quality, avoiding wrinkles at the opening of the packaging bag, and ensuring the sealing and aesthetics after the sealing process. The stretching mechanism 52 also includes a movable component, which drives the left stretching clamp and the right stretching clamp to switch between an avoidance position and a working position. When the left stretching clamp and the right stretching clamp are in the avoidance position, they do not hinder the packaging bag filled with material from entering the sealing mechanism 5 at the inlet end of the discharge conveyor belt 4. After the packaging bag filled with material is pushed into place, the left stretching clamp and the right stretching clamp switch to the working position to tighten the opening of the packaging bag for sealing.

[0065] In one embodiment, as shown in FIG16 , the rotation plane of the rotary base 11 of the packaging machine conveying mechanism 1 is 45 degrees to the horizontal plane, and the elastic bag-stretching mechanism shown in FIG1 can still be used on the workstation unit 121, and the orientation of the elastic bag-stretching mechanism is 45 degrees to the rotation plane of the rotary base 11, that is, the orientation of the mouth of the packaging container mounted on the elastic bag-stretching mechanism is 45 degrees to the rotation plane of the rotary base 11, and preset workstations are respectively provided at the highest point and the lowest point of the conveying path of the packaging machine conveying mechanism 1, and the packaging container supply mechanism 2 is provided at the preset workstation at the highest point, and the packaging container supply mechanism 2 is provided at the preset workstation at the lowest point. A material filling mechanism 3 is set at the preset workstation, and the packaging container feeding mechanism 2 loads the packaging container onto the workstation unit 121 horizontally. At this time, the mouth of the packaging container placed on the workstation unit 121 is facing horizontally, and the material filling mechanism 3 fills the material into the packaging container on the workstation unit 121 vertically. At this time, the mouth of the packaging container placed on the workstation unit 121 is vertically facing upward, which is suitable for filling bulk materials. The material falls into the packaging container downward by gravity, and then the packaging bag filled with the material moves downward out of the workstation unit 121 to realize bag return, and finally is sealed to discharge the finished product. Alternatively, as shown in Figure 17, a packaging container supply mechanism 2 is set at the preset workstation at the lowest point, and a material filling mechanism 3 is set at the preset workstation at the highest point. The packaging container supply mechanism 2 loads the packaging container vertically upward and places it on the workstation unit 121. The material filling mechanism 3 fills the material horizontally into the packaging container on the workstation unit 121, and pushes the packaging bag filled with the material out of the workstation unit 121, and finally seals it to discharge the finished product.

[0066] In one embodiment, as shown in FIG18 , the rotation plane of the rotary base 11 of the packaging machine conveying mechanism 1 is along the horizontal direction, and the elastic bag-stretching mechanism shown in FIG1 can still be used on the workstation unit 121. The direction of the elastic bag-stretching mechanism is perpendicular to the rotation plane of the rotary base 11, that is, the mouth of the packaging container mounted on the elastic bag-stretching mechanism is 90° to the rotation plane of the rotary base 11. Since the rotation plane of the rotary base 11 is along the horizontal direction, the mouth of the packaging container placed on the workstation unit 121 is vertically facing upward, and the diameter of the annular conveying path of the packaging machine conveying mechanism 1 is 100°. Preset workstations are respectively set on both sides in the direction, a packaging container feeding mechanism 2 is set at the preset workstation on one side, and a material filling mechanism 3 is set at the preset workstation on the other side. The packaging container feeding mechanism 2 vertically loads the packaging container to the workstation unit 121, and the material filling mechanism 3 vertically fills the material into the packaging container on the workstation unit 121. This structure is suitable for filling bulk materials. The material falls into the packaging container downward by gravity, and then the packaging bag filled with the material moves downward out of the workstation unit 121 to realize bag return, and finally is sealed to discharge the finished product.

[0067] In one embodiment, as shown in Figures 19 and 20, the station units 121 in the station assembly 12 are connected in sequence, and adjacent station units 121 are slidably connected, and the sliding direction is toward the radial inner and outer sides of the rotary base 11. The adjacent station units 121 slide relative to each other under the drive of the expansion and contraction drive mechanism, so that the station assembly 12 switches between the expanded posture and the collapsed posture. More specifically, the sliding direction between adjacent station units 121 is parallel to the rotation plane of the rotary base 11, so that the station units 121 slide relative to each other. The plane is parallel to the rotation plane of the rotating base 11, that is, the workstation assembly 12 changes its posture within a plane parallel to the rotation plane of the rotating base 11. The sliding direction between adjacent workstation units 121 can be specifically along the radial direction of the rotating base 11, or parallel to the radial direction of the rotating base 11, or have an angle with the radial direction of the rotating base 11. The workstation units 121 in the workstation assembly 12 can be arranged along a straight line, and the workstation units 121 in the workstation assembly 12 can also be arranged in a curve. Preferably, the workstation units 121 in the workstation assembly 12 are in an expanded position when arranged in a straight line, making it convenient for each operating mechanism to set up a parallel arrangement of the mechanism units to perform the packaging process on each workstation unit 121. Furthermore, the workstation units 121 in the workstation assembly 12 are arranged in a straight line along the tangent direction of the rotation of the rotating base 11. This state facilitates the structural design of the operating mechanism. The corresponding mechanism units in each operating mechanism are arranged in parallel along a straight line, which is easy to design and implement, and has a compact structure. When the workstation assembly 12 rotates to a preset workstation and is in an expanded position with the workstation units 121 arranged in a straight line, each workstation unit 121 corresponds to each mechanism unit in the operating mechanism one by one, so that each mechanism unit performs the packaging process on each workstation unit 121. When it is necessary to rotate the workstation assembly 12 from one preset workstation to the next preset workstation, the workstation assembly 12 is switched to a retracted posture to reduce the turning radius. Specifically, the workstation units 121 in the workstation assembly 12 are in a retracted posture when arranged along the circumferential direction of the rotating base 11. That is, the workstation units 121 that were originally arranged in a straight line along the tangent direction of the rotating circumference of the rotating base 11 slide toward the radial inner side of the rotating base 11, and finally reach the posture of the workstation units 121 arranged along the circumferential direction of the rotating base 11, which effectively reduces the turning radius of the rotating body, reduces the space required for the rotation activity, reduces the volume of the packaging machine conveying mechanism 1, and reduces the moment of inertia to enable faster rotation switching, thereby improving the efficiency of the packaging processing.

[0068] For the work station assembly 12 shown in Figure 19, the expansion and contraction drive mechanism can be a linear drive mechanism directly arranged between each adjacent work station unit 121. The moving direction of the linear drive mechanism is along the sliding direction between the adjacent work station units 121, which can realize driving the adjacent work station units 121 to slide relative to each other so that the work station assembly 12 can switch between the expanded posture and the collapsed posture; the expansion and contraction drive mechanism can also adopt the structure composed of the connecting rod assembly 131 and the slide 132 shown in Figure 21. The slide moves under the drive of the driving component, and then the slide drives the work station unit 121 to slide relative to each other through the connecting rod assembly to switch the posture of the work station assembly 12. The driving component can specifically be a cam guide component, a linear telescopic drive mechanism, etc.

[0069] In addition to the above-mentioned embodiments, the workstation units 121 in each workstation assembly 12 do not need to have a direct connection relationship, as long as the workstation units 121 can move relative to each other to change the posture of the workstation assembly 12. Each workstation unit 121 can be connected to the rotating base 11 through its own corresponding expansion and contraction drive mechanism, and each workstation unit 121 is driven by the expansion and contraction drive mechanism to move relative to the rotating base 11 to change the posture of the workstation assembly 12.

[0070] The above are merely preferred embodiments of the present application. It should be noted that the above preferred embodiments should not be construed as limiting the present application. The scope of protection of the present application should be determined by the scope defined in the claims. Persons skilled in the art will appreciate that improvements and modifications can be made without departing from the spirit and scope of the present application, and such improvements and modifications should also be considered within the scope of protection of the present application.

Claims

1. A packaging machine conveying mechanism, characterized in that: The invention comprises a rotary base (11), a station assembly (12) and an expansion and retraction driving mechanism, wherein the rotary base (11) is driven by the rotary driving mechanism to rotate intermittently, the station assembly (12) is connected to the rotary base (11), and the station assembly (12) comprises at least two station units (121) for placing packaging containers, and the station units (121) are driven by the expansion and retraction driving mechanism to move so that the station assembly (12) switches between an expansion posture and a folded posture, and the rotation radius of the station assembly (12) when it is in the folded posture is smaller than the rotation radius of the station assembly (12) when it is in the expansion posture.

2. The packaging machine conveying mechanism according to claim 1, characterized in that: When the workstation assembly (12) is in an extended position, the workstation units (121) in the workstation assembly (12) are arranged in a straight line along the tangent direction of the rotating circumference of the rotating base (11); when the workstation assembly (12) is in a folded position, the workstation units (121) in the workstation assembly (12) are arranged along the rotating circumference of the rotating base (11).

3. The packaging machine conveying mechanism according to claim 1, characterized in that: The workstation units (121) in the workstation assembly (12) are connected in sequence, adjacent workstation units (121) are hinged, and adjacent workstation units (121) are relatively deflected under the drive of the expansion and contraction driving mechanism, so that the workstation assembly (12) switches between an expanded posture and a collapsed posture; Alternatively, the workstation units (121) in the workstation assembly (12) are connected in sequence, and adjacent workstation units (121) are slidably connected, with the sliding direction being toward the radial inner and outer sides of the rotating base (11), and adjacent workstation units (121) slide relative to each other under the drive of the expansion and contraction driving mechanism, so that the workstation assembly (12) switches between the expanded posture and the collapsed posture.

4. The packaging machine conveying mechanism according to claim 3, characterized in that: When the number of the workstation units (121) in the workstation assembly (12) is an even number, the two workstation units (121) in the middle are movably connected to the rotating base (11); when the number of the workstation units (121) in the workstation assembly (12) is an odd number, the workstation unit (121) in the middle is fixedly connected to the rotating base (11).

5. The packaging machine conveying mechanism according to claim 3, characterized in that: The unfolding and retracting driving mechanism comprises a driving member, a connecting rod assembly (131) and a sliding member (132); the sliding member (132) is slidably connected to a rotating base (11); the sliding direction of the sliding member (132) is along the radial direction of the rotating circumference of the rotating base (11); the sliding member (132) is connected to a workstation unit (121) in the workstation assembly (12) through the connecting rod assembly (131); the driving member drives the sliding member (132) to move in the radial direction of the rotating circumference of the rotating base (11) so that the workstation assembly (12) is switched between an unfolding posture and a retracting posture.

6. The packaging machine conveying mechanism according to claim 5, characterized in that: The driving member comprises a cam guide member (133), and the sliding member (132) is slidably connected to the cam guide member (133); Alternatively, the driving member includes a driving member (134) and a pulling rod (135), wherein the driving member (134) is slidably connected to the rotating base (11), the sliding direction of the driving member (134) is perpendicular to the rotation plane of the rotating base (11), one end of the pulling rod (135) is hinged to the driving member (134), and the other end of the pulling rod (135) is hinged to the sliding member (132).

7. The packaging machine conveying mechanism according to claim 1, characterized in that: At least two of the workstation assemblies (12) are evenly spaced along the rotational circumference of the rotating base (11).

8. The packaging machine conveying mechanism according to claim 1, characterized in that: The workstation unit (121) is provided with a fixing mechanism for fixing the packaging container.

9. The packaging machine conveying mechanism according to claim 8, characterized in that: The holding mechanism is an elastic bag-supporting mechanism, comprising a bag-supporting member (122) elastically maintained in an expanded state, and the bag-supporting member (122) is used to extend into a bag-type packaging container to elastically maintain the bag-type packaging container in an expanded state.

10. The packaging machine conveying mechanism according to claim 9, characterized in that: It also includes a loosening and pushing mechanism (123) for driving the bag-supporting member (122) to switch to a folded state, wherein the loosening and pushing mechanism (123) is arranged on the workstation unit (121) or at a preset workstation on the rotation path of the workstation assembly (12).

11. The packaging machine conveying mechanism according to claim 1, characterized in that: The rotation plane of the rotating base (11) is along the horizontal direction, the workstation unit (121) receives the packaging container along the vertical direction, and the packaging container on the workstation unit (121) receives the filled material along the vertical direction; Alternatively, the rotation plane of the rotating base (11) is along the vertical direction, the workstation unit (121) receives the packaging container along the horizontal direction, and the packaging container on the workstation unit (121) receives the filled material along the horizontal direction; Alternatively, the rotation plane of the rotary base (11) is 45° to the horizontal plane, and the station unit The unit (121) receives packaging containers in a horizontal direction, and the packaging containers on the workstation unit (121) receive filled materials in a vertical direction, or the workstation unit (121) receives packaging containers in a vertical direction, and the packaging containers on the workstation unit (121) receive filled materials in a horizontal direction.

12. A packaging machine, characterized in that: It comprises the packaging machine conveying mechanism according to any one of claims 1 to 11, wherein operating mechanisms for performing different packaging processing steps are respectively arranged at each preset workstation on the conveying path of the packaging machine conveying mechanism.

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