Packaging machine

Abstract

The invention belongs to the technical field of packaging equipment, and discloses a packaging machine which is characterized in that a linkage part extends in the arrangement direction of heat sealing mechanisms, the linkage part is in transmission connection with all the heat sealing mechanisms through action assemblies so as to drive all the heat sealing mechanisms to act synchronously, and the linkage part penetrates out of a first bin body to form a driving part; the device further comprises a vacuumizing mechanism, and the vacuumizing mechanism conducts vacuumizing operation on the combined bin bodies in the parallel path sections. On the basis of effectively avoiding the problem of poor heat sealing effect caused by air leakage, the vacuum pumping operation and the heat sealing operation are completed in the moving process of the combined bin body, so that the heat sealing efficiency can be effectively improved.

Description

Technical Field

[0001] The invention belongs to the technical field of packaging equipment, and in particular relates to a packaging machine. Background Art

[0002] In order to improve the material packaging efficiency of the factory assembly line, it is necessary to optimize the packaging process to ensure that the time spent on each process is shortened as much as possible, so that more materials can be packaged within a unit of time.

[0003] The heat sealing of packaging bags is usually carried out in a sealed environment. Usually two bins are docked to form a combined bin, and then heat-sealed in the combined bin. Usually the combined bin is in a vacuum state, so it is necessary to ensure the spatial airtightness of the combined bin. In other words, if there are more dynamic connection points between the action mechanism acting on the heat sealing mechanism and the combined bin, the greater the risk of air leakage, and the more unfavorable it is to ensure the heat sealing effect.

[0004] In some existing technologies, vacuuming and heat sealing are usually two working stages, and dynamic operation cannot be performed, which also leads to low heat sealing efficiency of the packaging bag. Summary of the invention

[0005] In order to solve the above technical problems, the present invention discloses a packaging machine that can complete the vacuuming and heat sealing operations during the movement of the combined bin body while effectively avoiding the problem of poor heat sealing effect caused by air leakage, thereby effectively improving heat sealing efficiency.

[0006] The specific technical solutions of the present invention are as follows:

[0007] A packaging machine, comprising:

[0008] A conveying mechanism 1, wherein the conveying mechanism 1 is provided with a bin body 1, and the conveying mechanism 1 drives the bin body 1 to move along a preset path, wherein an action mechanism and at least two heat-sealing mechanisms arranged side by side are arranged in the bin body 1; the action mechanism comprises a linkage member and an action assembly, wherein the linkage member is extended and arranged along the arrangement direction of the heat-sealing mechanisms, and the linkage member is respectively connected with each of the heat-sealing mechanisms through the action assembly to drive all the heat-sealing mechanisms to move synchronously, and the linkage member passes through the bin body 1 to form a driving part; and

[0009] Conveying mechanism 2, wherein the conveying mechanism 2 is provided with a bin body 2, the conveying mechanism 2 drives the bin body 2 to move along a preset path 2, and the bin body 2 is provided with a clamping mechanism for fixing the packaging bag;

[0010] Wherein, the preset path 1 and the preset path 2 both have parallel path segments parallel to each other, and the warehouse body 1 and the warehouse body 2 are connected in the parallel path segment to form a closed combined warehouse body for traveling;

[0011] It also includes a vacuum pumping mechanism, which performs a vacuum pumping operation on the combined bin bodies in the parallel path section.

[0012] During the movement of bin body 1 and bin body 2, they can be docked to form a combined bin body, and the gas in the combined bin body can be extracted, so that bin body 1 and bin body 2 are tightly docked through negative pressure, so that the mouth of the packaging bag is heat-sealed by the heat-sealing mechanism in a vacuum environment. Since the action mechanism and the heat-sealing mechanism are both arranged in bin body 1, and only the linkage member passes through the bin body 1 to form a driving part, there is only a dynamic connection point between the linkage member and bin body 1, that is, there is only one point where there is a risk of air leakage, so the heat-sealing effect can be effectively guaranteed; in addition, when the conveying mechanism conveys bin body 1 to move, and the conveying mechanism conveys During the movement of the second conveying bin body by mechanism two, they are docked in the parallel path section to form a combined bin body, and the gas in the combined bin body is extracted by the vacuum mechanism, so that bin body one and bin body two are tightly docked through negative pressure. At this time, the combined bin body continues to move along the vacuum section. Since the packaging bag is clamped in bin body two, the air in the packaging bag is also extracted during the vacuum process of the vacuum mechanism. Therefore, after the packaging bag is heat-sealed at the end of the vacuum section, residual air bags in the packaging bag can be avoided, thereby increasing the shelf life of the packaging bag, thereby significantly improving the packaging efficiency of current packaging equipment.

[0013] Preferably, the vacuum pumping mechanism comprises:

[0014] A gas distribution rail, the gas distribution rail is arranged along a parallel path section, and a plurality of air holes are arranged at intervals on the rail surface of the gas distribution rail; and

[0015] A matching piece, the matching piece is arranged on the first bin body or the second bin body, the matching piece is provided with an air passage for communicating with the air hole, the air passage is communicated with the first bin body or the second bin body, and is also provided with a fitting surface for fitting with the surface of the gas distribution rail to move along the gas distribution rail, and the fitting surface is provided with a ventilation inlet of the air passage;

[0016] Wherein, transition rails are respectively connected at both ends of the valve guide rail, and there is a preset height difference of one between the rail surface of the transition rail and the rail surface of the valve guide rail, and a guide wheel for traveling along the transition rail is arranged on the matching part, and there is a preset height difference of two between the traveling surface formed by the guide wheel and the fitting surface, and the preset height difference of one is equal to the preset height difference of two;

[0017] Alternatively, the vacuum pumping mechanism comprises:

[0018] An air slip ring assembly, wherein a plurality of flexible tubes 2 are arranged on the air slip ring of the air slip ring assembly along the rotation circumference, and the flexible tubes 2 are respectively connected to the warehouse body 1;

[0019] Alternatively, the vacuum pumping mechanism comprises:

[0020] A one-way valve provided on the first or second bin body;

[0021] The air extraction pipeline is arranged beside the parallel path section and can be switched between the air extraction position and the waiting position for extraction. When the air extraction pipeline is located at the air extraction position, the air extraction pipeline cooperates with the one-way valve.

[0022] The vacuum pumping mechanism is provided with a guide wheel on the matching piece to cooperate with the transition rail at the end of the gas distribution rail. The guide wheel can roll, so that the matching piece can enter or exit the transition rail more smoothly, which can effectively reduce or avoid impact and improve smoothness. When the matching piece is driven onto the transition rail, the fitting surface can accurately reach the height of matching with the rail surface of the gas distribution rail, so that when the matching piece continues to drive onto the gas distribution rail, the fitting surface can accurately fit with the rail surface of the gas distribution rail, so that the matching piece can enter the gas distribution rail smoothly and accurately, effectively avoiding impact and component damage, and ensuring long-term and stable operation of the equipment. , and can reliably perform vacuuming operations; the vacuuming mechanism cooperates with the movement of the bin body one through a rotatable air slip ring. The structure is simple. In addition to being able to achieve vacuuming, it can also avoid the entanglement of the flexible tube two, thereby effectively ensuring the stability of movement; when using a one-way valve, when the combined bin body moves along the parallel path section to the air extraction pipeline, the conveying mechanism one and the conveying mechanism two suspend the action, and then the air extraction pipeline switches to the air extraction position to cooperate with the one-way valve to vacuum the combined bin body. After the vacuuming is completed, the air extraction pipeline switches to the waiting position, and the conveying mechanism one and the conveying mechanism two are started, so that the combined bin body continues to move along the parallel path section.

[0023] Preferably, the conveying mechanism 1 includes a track assembly for forming a preset path 1;

[0024] The track assembly includes track 1, track 2, track 3 and track 4 which are sequentially arranged along a preset annular conveying path;

[0025] The track 2 is arranged on the switching mechanism 1 to be driven by the switching mechanism 1 to switch between the position 1 and the position 2. When the track 2 is in the position 1, the track 2 cooperates with the track 1 and is disconnected from the track 3. When the track 2 is in the position 2, the track 2 is disconnected from the track 1 and cooperates with the track 3.

[0026] The track 4 is arranged on the switching mechanism 2 so as to be driven by the switching mechanism 2 to switch between the position 3 and the position 4. When the track 4 is in the position 3, the track 4 cooperates with the track 1 and is disconnected from the track 3. When the track 4 is in the position 4, the track 4 cooperates with the track 1 and is connected to the track 3.

[0027] The conveying mechanism 1 also includes a driving mechanism 1 arranged at a place of the track to drive a bin body arranged on the track assembly to move forward;

[0028] The parallel path section of the conveying mechanism 1 includes track 3, track 2 at position 2, and track 4 at position 4.

[0029] The warehouse body 1 slides on track 1, track 2, track 3 and track 4 along a preset annular conveying path. When it is desired that the warehouse body 1 enters track 3 from track 1, it needs to enter track 2 for transition, which can be achieved by switching the position of switching mechanism 1, thereby maintaining the preset precise alignment during the subsequent process; similarly, after the corresponding process is completed, when it is desired that the warehouse body 1 re-enter track 1 from track 3, it can use track 4 for transition, which can be achieved by switching the position of switching mechanism 2; thereby reducing the relative movement distance of the warehouse body 1, thereby effectively reducing the length of the conveying path, thereby avoiding the excessive size of the circular conveying mechanism, which can also ensure that the circular conveying mechanism has a higher conveying efficiency; and compared with two traditional annular conveying mechanisms to convey their respective warehouses, it can also avoid the large conveying rate synchronization requirements between the two traditional annular conveying mechanisms, so as to reduce the implementation difficulty.

[0030] Preferably, the annular conveying path of the track assembly is triangular in shape as a whole, and the track 1 has an arc-shaped path segment;

[0031] The switching mechanism 1 drives the track 2 to swing and switch between position 1 and position 2, and the switching mechanism 2 drives the track 4 to swing and switch between position 3 and position 4.

[0032] This structure can save the assembly volume of the track component, which is beneficial to reducing assembly time and improving process efficiency; the switching mechanism 1 and the switching mechanism 2 are yaw movements, so their movement paths are arc-shaped. The structure is more compact and can better utilize limited space for layout.

[0033] Preferably, the driving mechanism 1 comprises:

[0034] A toggle assembly and a transmission component 1, wherein the toggle assembly is driven by the transmission component 1 to reciprocate along the track 1, and the toggle assembly pushes the bin body 1 to move along the track assembly;

[0035] Alternatively, the second driving mechanism comprises:

[0036] Transmission component 2, the transmission component 2 is a conveyor chain or a conveyor belt. Among the transmission component 2 and the warehouse body 1, one of them has a protrusion, and the other has a matching part connected with the protrusion.

[0037] The driving mechanism has a simple structure, occupies a small volume, and has a high driving efficiency. When the driving mechanism includes a toggle joint and a transmission component one, when the transmission component one is actuated, the toggle joint first moves along the track one in a preset path to drive the warehouse body one, and then the toggle joint moves along the track one in the opposite direction of the preset path one, thereby reaching the driving position for the next warehouse body one, and when it moves along the track one in the preset path again, the warehouse body one can be driven, thereby realizing the driving of multiple warehouse bodies one. When the driving mechanism includes a transmission component two, the transmission component two cyclically moves, and through the connection between the protrusion and the matching part, the movement of the transmission component two drives the movement of the warehouse body one along the track assembly, thereby also realizing the driving of multiple warehouse bodies one.

[0038] Preferably, it also includes:

[0039] A power source acting on the driving part, wherein the power source moves along a preset path with the bin body;

[0040] Alternatively, the power source is arranged at a preset station on a preset path where the warehouse body moves.

[0041] The action mode of the driving part can be realized by a variety of structures, which is simple and practical.

[0042] Preferably, the linkage member reciprocates along the arrangement direction of the heat sealing mechanism to drive all the heat sealing mechanisms to open and close synchronously;

[0043] Alternatively, the linkage member rotates around its own axis to drive all the heat sealing mechanisms to open and close synchronously.

[0044] The linkage part can drive the heat sealing mechanism through the linear motion or rotation of the linkage part, and has only one dynamic connection point with the bin body, with stable driving capability and simple structure.

[0045] Preferably, the action component includes an opening and closing part 1, an opening and closing part 2 and a transmission part, the opening and closing part 1 and the opening and closing part 2 are slidably or rotatably arranged in the warehouse body 1, the heat sealing part 1 of the heat sealing mechanism is connected with the opening and closing part 1, the heat sealing part 2 of the heat sealing mechanism is connected with the opening and closing part 2, the transmission part is arranged on the linkage part and moves with the linkage part, the transmission part cooperates with the opening and closing part 1 and / or the opening and closing part 2 to drive the opening and closing part 1 and the opening and closing part 2 to move toward each other so that the heat sealing mechanism opens and closes.

[0046] In order to realize the opening and closing of the heat sealing mechanism, there is a reverse movement between the heat sealing part 1 and the heat sealing part 2 of the heat sealing mechanism. Generally speaking, it is a symmetrical movement mode, that is, there is a linkage relationship between the heat sealing part 1 and the heat sealing part 2. In order to make the overall structure simple and easy to implement, in some technical schemes, the linkage part is arranged on the outside of the warehouse body 1, which leads to the existence of dynamic connection points between the heat sealing part 1 and the heat sealing part 2 and the warehouse body 1, which is not conducive to ensuring the vacuum degree in the combined warehouse body. In the present application, the opening and closing part 1, the opening and closing part 2 and the transmission part are all located in the warehouse body 1. It can be understood that the heat sealing part 1 and the heat sealing part 2 are also located in the warehouse body 1 as a whole. That is to say, the present application can ensure the stable opening and closing of the heat sealing mechanism and ensure the heat sealing effect on the basis of having and only having one leakage risk point.

[0047] Preferably, the sliding directions of the opening and closing member 1 and the opening and closing member 2 are perpendicular to the arrangement direction of the heat sealing mechanism, and the linkage member reciprocates along the arrangement direction of the heat sealing mechanism;

[0048] A guiding part having an angle with the moving direction of the linkage part is arranged on the transmission part, and an actuating part which slides with the guiding part is arranged on the opening and closing part one and the opening and closing part two respectively, or a guiding part having an angle with the moving direction of the linkage part is arranged on the opening and closing part one and the opening and closing part two respectively, and an actuating part which slides with the guiding part is arranged on the transmission part.

[0049] The structure is simple. Through the cooperation of the guide part and the actuating part and the change of the guidance of the guide part, the opening and closing parts 1 and 2 move in opposite directions to realize the opening and closing action of the heat sealing mechanism, thereby meeting the heat sealing requirements for the mouth of the packaging bag.

[0050] Preferably, an elastic member is provided between the opening and closing member 1 and the heat-sealing portion 1, and an elastic member is provided between the opening and closing member 2 and the heat-sealing portion 2.

[0051] There are multiple heat-sealing mechanisms arranged side by side in the bin body 1, and the action of the linkage member can drive all the heat-sealing mechanisms to act synchronously. When the heat-sealing mechanisms are arranged at a long distance, the heat-sealing mechanism close to the linkage member can be guaranteed to have a stable heat-sealing effect. However, for the heat-sealing mechanism far away from the linkage member, the heat-sealing effect cannot be guaranteed. In other words, for the heat-sealing mechanism far away from the linkage member, its heat-sealing part 1 and heat-sealing part 2 may not be able to completely abut against each other, and at this time, the mouth of the packaging bag cannot be completely sealed. Therefore, the elastic member provided can support the heat-sealing part 1 and the heat-sealing part 2 to achieve complete abutment during the opening and closing process of the heat-sealing mechanism, thereby ensuring the sealing effect.

[0052] Preferably, the opening and closing direction of the heat sealing mechanism is perpendicular to the arrangement direction of the heat sealing mechanism;

[0053] Alternatively, the opening and closing direction of the heat sealing mechanism is arranged along the arrangement direction of the heat sealing mechanism.

[0054] For different packaging machines, the number of heat-sealing mechanisms to be arranged can be determined by adjusting the opening and closing directions of the heat-sealing mechanisms. That is to say, after the opening and closing directions of all the heat-sealing mechanisms are the same, different opening and closing directions will result in different overall lengths of the bin body one. When the number of heat-sealing mechanisms is the same, if the opening and closing directions of the heat-sealing mechanisms are perpendicular to the arrangement direction of the heat-sealing mechanisms, the overall length of the bin body one is relatively long; if the opening and closing directions of the heat-sealing mechanisms are arranged along the arrangement direction of the heat-sealing mechanisms, the overall length of the bin body one is relatively short. That is to say, for different layout sites, the actual site size can be adapted by configuring the opening and closing directions of the heat-sealing mechanisms.

[0055] Compared with the prior art, the present invention can reduce the number of dynamic connection points on the bin body 1 relative to the prior art, thereby effectively reducing the risk of air leakage, thereby ensuring that the combined bin body has good airtightness for vacuuming, and at the same time achieving stable heat sealing of the packaging bag; the present invention is compact and can well achieve the docking closure between the bin body 1 and the bin body 2, thereby well meeting the vacuuming conditions and heat sealing conditions; in addition, the present invention can achieve vacuuming and heat sealing actions during the movement of the combined bin body, thereby improving the heat sealing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 This is a schematic diagram of the docking of the combined warehouse body in the embodiment of the present invention;

[0057] Figure 2 This is a schematic diagram of a bin body 1 in an embodiment of the present invention;

[0058] Figure 3 It is a schematic diagram of the arrangement of the action mechanism and the heat sealing mechanism in an embodiment of the present invention;

[0059] Figure 4 for Figure 3 Schematic diagram of the other direction;

[0060] Figure 5 for Figure 3 Exploded diagram of

[0061] Figure 6 A schematic diagram of one type of opening and closing of the heat sealing mechanism in an embodiment of the present invention;

[0062] Figure 7 A schematic diagram of one type of opening and closing of the heat sealing mechanism in an embodiment of the present invention;

[0063] Figure 8 A schematic diagram of one type of opening and closing of the heat sealing mechanism in an embodiment of the present invention;

[0064] Fig. 9A schematic diagram of one type of opening and closing of the heat sealing mechanism in an embodiment of the present invention;

[0065] Fig.10 A schematic diagram of one type of opening and closing of the heat sealing mechanism in an embodiment of the present invention;

[0066] Fig.11 Schematic diagram of another arrangement of the heat sealing mechanism in an embodiment of the present invention;

[0067] Fig. 12A A schematic diagram of a connection between a power source and a driving unit in an embodiment of the present invention;

[0068] Fig. 12B for Fig. 12A A simple diagram of

[0069] Fig.13 Another schematic diagram of connecting the power source and the driving part in the embodiment of the present invention;

[0070] Fig.14 It is another schematic diagram of the arrangement of the switching mechanism 1 and the switching mechanism 2 in the embodiment of the present invention;

[0071] Fig.15 Schematic diagram of the arrangement of a driving mechanism 1 in an embodiment of the present invention;

[0072] Fig.16 for Fig.15 A magnified image of point A;

[0073] Fig.17 for Fig.15 The enlarged view of point B;

[0074] Fig.18 A schematic diagram of a toggle assembly according to an embodiment of the present invention;

[0075] Fig.19 Schematic diagram of the arrangement of the second driving mechanism in an embodiment of the present invention;

[0076] Fig. 20 for Fig.19 Enlarged view of point C;

[0077] Fig.21 Schematic diagram of the conveying mechanism 2 in the embodiment of the present invention;

[0078] Fig. 22 Schematic diagram of a vacuum pumping mechanism in an embodiment of the present invention;

[0079] Fig.23 A schematic diagram of a transition rail in an embodiment of the present invention;

[0080] Fig.24 for Fig.23 The enlarged view of point D;

[0081] Fig.25 It is a schematic diagram of the structure in which the matching parts are on the gas distribution rail in an embodiment of the present invention;

[0082] Fig.26 It is a schematic diagram of a local structure in which a matching piece is located on a transition rail in an embodiment of the present invention;

[0083] Fig. 27 A schematic diagram of a matching piece in one direction in an embodiment of the present invention;

[0084] Fig.28 A schematic diagram of a matching piece in another direction according to an embodiment of the present invention;

[0085] Fig.29 A cross-sectional view of a matching piece in an embodiment of the present invention;

[0086] Fig.30 It is a structural schematic diagram of the hidden movable part of the matching piece in an embodiment of the present invention;

[0087] Fig.31 A schematic diagram of another vacuum pumping mechanism according to an embodiment of the present invention;

[0088] Fig.32 Schematic diagram of another vacuum pumping mechanism in an embodiment of the present invention.

[0089] In the figure: 1-bin body 1; 2-bin body 2; 3-acting mechanism; 4-heat sealing mechanism; 5-linking member; 6-driving part; 7-opening and closing member 1; 8-opening and closing member 2; 9-transmission member; 10-heat sealing part 1; 11-heat sealing part 2; 12-cross bar; 13-guide part; 14-actuating part; 15-active member; 16-reset spring; 17-cam; 18-ring groove; 19-elastic member; 20-positive thread; 21-negative thread; 22-power source; 23-track 1; 24-track 2; 25-track 3; 26-track 4; 27-switching mechanism 1; 28-switching mechanism 2; 29-transmission member 1; 30-pushing part 1 ;31-thrusting part 2;32-sliding fitting;33-transmission component 1;34-base;35-sliding piece;36-resetting piece;37-transmission component 2;38-raised part;39-matching part;40-power source;41-matching piece;42-base;43-movable part;44-fitting surface;45-guide wheel;46-gas distribution guide rail;47-air hole;48-transition rail;49-guide slope;50-flexible tube 1;51-ventilation inlet;52-ventilation outlet;53-elastic body;54-stator;55-gas slip ring;56-flexible tube 2;57-first wheel group;58-second wheel group;59-check valve. DETAILED DESCRIPTION

[0090] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with specific implementation methods.

[0091] like Figure 1 to Figure 5 , Fig.21 As shown, a packaging machine comprises a conveying mechanism 1 and a conveying mechanism 2; the conveying mechanism 1 is provided with a bin body 1, the conveying mechanism 1 drives the bin body 1 to move along a preset path, the bin body 1 is provided with an action mechanism 3 and at least two heat sealing mechanisms 4 arranged side by side; the action mechanism 3 comprises a linkage member 5 and an action assembly, the linkage member 5 is extended and arranged along the arrangement direction of the heat sealing mechanisms 4, the linkage member 5 is respectively connected with each of the heat sealing mechanisms 4 through the action assembly to drive all the heat sealing mechanisms 4 to move synchronously, and the linkage member 5 passes through the bin body 1 to form a driving part 6; the conveying mechanism 2 is provided with a bin body 2, the conveying mechanism 2 drives the bin body 2 to move along the preset path 2, and the bin body 2 2 is provided with a clamping mechanism for fixing the packaging bag; the preset path 1 and the preset path 2 both have parallel path sections parallel to each other, the bin body 1 and the bin body 2 2 are connected in the parallel path section to form a closed combined bin body to move; and also includes a vacuum pumping mechanism, the vacuum pumping mechanism performs a vacuum pumping operation on the combined bin body in the parallel path section.

[0092] In this embodiment, the conveying mechanism 1 drives the warehouse body 1 to move along the preset path 1, and the conveying mechanism 2 drives the warehouse body 2 2 to move along the preset path 2. Both the preset path 1 and the preset path 2 are circular paths. Therefore, in the process of the movement of the warehouse body 1 and the warehouse body 2 2, there are three movement stages: moving away from each other, moving toward each other, and moving in the same direction. When the warehouse body 1 and the warehouse body 2 2 are located in the parallel path section, the two have the same direction of movement, so they can be connected to form a combined warehouse body. Under the action of the vacuum pumping mechanism, the combined warehouse body is tightly fitted together with negative pressure and moves along the parallel path section. At this time, the packaging bag is clamped on two vertical sides by the clamping mechanism in the warehouse body 2 2, and the vacuum pumping mechanism vacuumizes the combined warehouse body, and the air in the packaging bag is extracted. Under the action of maintaining the vacuum state and continuing to move along the parallel path section, the heat sealing mechanism 4 heat-seals the mouth of the packaging bag, thereby ensuring the sealing performance of the packaging bag. Therefore, in the process of transporting the packaging bag, the vacuum pumping and heat sealing of the packaging bag can be achieved, thereby saving process time and improving process efficiency. It should be noted that a plurality of clamps are arranged in parallel on the clamping mechanism, so that a plurality of packaging bags can be placed in parallel on the clamping mechanism, and then a plurality of packaging bags can be vacuumed at the same time, which effectively improves the overall processing efficiency and greatly increases the production capacity.

[0093] In this embodiment, bin body 1 has a driving mechanism 1 for driving its movement, and bin body 2 has a driving mechanism 2 for driving its movement. Therefore, the combined bin body can realize movement along a parallel path segment through driving mechanism 1 and / or driving mechanism 2.

[0094] Therefore, after the chamber 1 and the chamber 2 are connected to each other, vacuuming can be performed. In this embodiment, the vacuuming mechanism is arranged at the parallel path section. In order to avoid collision during vacuuming, ensure the long-term and stable operation of vacuuming, and ensure the vacuuming effect, such as Fig. 22 , Fig.23As shown, the vacuum pumping mechanism in this embodiment includes an air distribution rail 46 and a matching piece 41. Specifically, the air distribution rail 46 is arranged along a parallel path segment. Further, a plurality of air holes 47 are arranged on the rail surface of the air distribution rail 46 along the path direction thereof at intervals. A valve assembly for controlling on and off is arranged in the air hole 47. The air distribution rail 46 is connected to a vacuum generating device (not shown in the figure), that is, the vacuum generating device is connected to the air hole 47 on the air distribution rail 46 to extract air through the air hole 47 to generate a negative pressure vacuum. The matching piece 41 is provided with an air passage for communicating with the air hole 47. The matching piece 4 1 is provided with a fitting surface 44 for fitting with the rail surface of the gas distribution rail 46 to move along the gas distribution rail 46, and the ventilation inlet of the ventilation channel is provided on the fitting surface 44, and the fitting 41 is used to connect with the warehouse body 2 2. Specifically, the ventilation outlet of the ventilation channel on the fitting 41 is connected with the warehouse body 2 2, so that when the fitting 41 moves along the gas distribution rail 46 with the warehouse body 2 2 in the parallel path section, the fitting 41 moves along the gas distribution rail 46 until the ventilation inlet of the fitting 41 is connected with the air hole 47 of the gas distribution rail 46, that is, the warehouse body 2 2 is connected to the vacuum generating device through the ventilation channel, and then the combined warehouse body 2 can perform the vacuum operation process. It can be understood that in some other embodiments, the ventilation outlet of the ventilation channel on the fitting 41 can also be connected with the warehouse body 1 1. The vacuum pumping mechanism in this embodiment adopts a mobile vacuum pumping method. The fitting 41 moves along with the bin body 2. When the air passage of the fitting 41 is directly connected with the air hole 47, the combined bin body stops moving, the valve at the air hole 47 is opened and the vacuum pumping operation is performed. After a preset time, the valve at the air hole 47 is closed, and the combined bin body moves again. Due to the vacuum adsorption effect, the fitting 41 is tightly attached to the track surface of the gas distribution guide rail 46 through the fitting surface 44, and no friction occurs during the process of the fitting 41 moving along the gas distribution guide rail 46 to the next air hole 47. The vacuum is broken, that is, the current vacuum state will be maintained in the combined warehouse body to move forward. When the combined warehouse body moves to the point where the air duct of the matching piece 41 is directly connected to the next air hole 47, the valve at the next air hole 47 opens and performs the vacuum operation again after a preset time and then closes. This process is repeated to perform mobile vacuuming of multiple stations. The vacuuming time of each station is short, which makes the dynamic and static time ratio of the production line more reasonable, thereby effectively improving the overall processing efficiency, and effectively improving the vacuuming efficiency and effect to meet the application requirements of high vacuum.Furthermore, the gas distribution rail 46 and the matching piece 41 can be matched in the vertical direction, that is, the rail surface of the gas distribution rail 46 can be a horizontal plane, and the fitting surface 44 of the matching piece 41 is also a horizontal plane, so that the fitting surface 44 of the matching piece 41 and the rail surface of the gas distribution rail 46 can fully fit to ensure air tightness during vacuuming. In addition, the gas distribution rail 46 and the matching piece 41 can be matched in the horizontal direction, that is, the rail surface of the gas distribution rail 46 can be a vertical plane, and the fitting surface 44 of the matching piece 41 is also a vertical plane. Similarly, the fitting surface 44 of the matching piece 41 and the rail surface of the gas distribution rail 46 can fully fit to ensure air tightness during vacuuming. That is to say, in some embodiments, the air holes 47 of the gas distribution rail 46 are located in the horizontal direction, and in other embodiments, the air holes 47 can also be located on the side of the gas distribution rail 46.

[0095] Further, such as Figure 22 to Figure 26 As shown, in order to make the fitting 41 enter and exit the gas distribution rail 46 more smoothly and avoid collision and impact that affect the operation of the equipment and cause damage to components, transition rails 48 are respectively connected to the entry and exit ends of the gas distribution rail 46. Specifically, there is a preset height difference one between the rail surface of the transition rail 48 and the rail surface of the gas distribution rail 46. The fitting 41 is provided with a guide wheel 45 for moving along the transition rail 48. The running surface formed by the guide wheel 45 (the running surface formed by the guide wheel 45 refers to the plane where the lowest point of the wheel rims of all guide wheels 45 is located) and the fitting surface 44 has a preset height difference two, and the preset height difference one is equal to the preset height difference two. The guide wheel 45 rolls, so that the fitting 41 can enter or exit the transition rail 48 more smoothly, which can effectively reduce or avoid impact and improve smoothness. When the fitting 41 drives onto the transition rail 48, the guide wheel 45 is in contact with the track surface of the transition rail 48, that is, the travel surface formed by the guide wheel 45 and the track surface of the transition rail 48 are in the same plane. At this time, the fitting surface 44 is exactly in the same height plane as the track surface of the valve guide rail 46. Therefore, when the fitting 41 moves along the transition rail 48 to the valve guide rail 46, the fitting surface 44 can accurately fit and contact with the track surface of the valve guide rail 46 without any collision, so that the fitting 41 can drive onto the valve guide rail 46 smoothly and accurately, effectively avoiding collision and damage to components, ensuring the long-term and stable operation of the equipment and ensuring that the vacuum operation can be carried out reliably. Furthermore, from the height direction, the track surface of the transition rail 48 may be lower than the track surface of the valve guide rail 46, and correspondingly, the running surface formed by the guide wheel 45 is lower than the fitting surface 44; or the track surface of the transition rail 48 may be higher than the track surface of the valve guide rail 46, and correspondingly, the running surface formed by the guide wheel 45 is higher than the fitting surface 44. The range of the preset height difference 1 and the preset height difference 2 is 0.3-1 mm, which is conducive to making the matching piece 41 more accurately and smoothly fit with the valve guide rail 46.

[0096] More specifically, Fig. 22 , Fig.25 As shown, the transition rail 48 includes rails respectively arranged on both sides of the path direction of the gas distribution rail 46. When the matching piece 41 is on the transition rail 48, the guide wheel 45 moves along the rail. When the matching piece 41 is on the gas distribution rail 46, the guide wheel 45 is located on both sides of the path direction of the gas distribution rail 46. In other words, the guide wheels 45 are arranged on both sides of the moving direction of the matching piece 41, and the spacing between the guide wheels 45 on both sides of the matching piece 41 is greater than the track width of the gas distribution rail 46, so that when the matching piece 41 is on the gas distribution rail 46, the guide wheel 45 will not contact the gas distribution rail 46, ensuring that the fitting surface 44 can fully and effectively fit closely with the track surface of the gas distribution rail 46, ensuring good air tightness, and then ensuring the reliability of vacuuming. Furthermore, a hollow area is formed between the two rails of the transition rail 48 to avoid the fitting surface 44 of the matching piece 41 , so that the fitting surface 44 of the matching piece 41 can be more accurately fitted and contacted with the rail surface of the valve guide rail 46 when the matching piece 41 enters the valve guide rail 46 .

[0097] Further, such as Fig.23 As shown, a guide slope 49 inclined to the rail surface of the transition rail 48 is also provided at the end of the transition rail 48. When the matching piece 41 drives onto the transition rail 48, the guide wheel 45 of the matching piece 41 first contacts the guide slope 49. The guide slope 49 is inclined at a small angle relative to the travel path of the guide wheel 45, and has a smooth transition, so that the matching piece 41 can drive into the transition rail 48 more smoothly and better avoid collision and impact.

[0098] The matching piece 41 is used to connect the movable warehouse body 2. The moving path of the warehouse body 2 is difficult to maintain high-precision parallelism with the path of the gas distribution rail 46. Therefore, during the movement of the warehouse body 2, the distance between the warehouse body 2 and the gas distribution rail 46 fluctuates. In order to ensure the reliability of vacuuming and avoid vacuum breaking due to the change in the distance, the matching piece 41 adopts a movable structure to flexibly adapt to the change in the distance between the warehouse body 2 and the gas distribution rail 46. Specifically, Figure 27 to Figure 30As shown, the fitting 41 includes a base 42 and a movable part 43, the fitting surface 44 is provided on the bottom surface of the base 42, a flexible tube 50 is connected between the base 42 and the movable part 43, a cavity is provided on the base 42 and the movable part 43 to communicate with the flexible tube 50 to form the air passage, the movable part 43 is connected to the warehouse body 2, an air inlet 51 of the air passage is provided on the fitting surface 44, and an air outlet 52 of the air passage is provided on the movable part 43 to communicate with the warehouse body 2, so that the base 42 and the movable part 43 can move relative to each other through the flexible tube 50 to form an air path with a floating length, and the connectivity and external sealing of the air path are always guaranteed, thereby ensuring that the warehouse body 2 can be reliably connected to the gas distribution guide rail 46 through the fitting 41 during the movement to form a stable air path, thereby ensuring the reliability of vacuum extraction. A plurality of ventilation outlets 52 of the ventilation channel may be provided on the movable portion 43 to increase the flow area and extract air at multiple points, which is conducive to more efficient vacuuming.

[0099] Furthermore, an elastic body 53 is provided between the base 42 and the movable part 43. Specifically, a plurality of elastic bodies 53 are provided. The elastic bodies 53 can be springs and are evenly spaced along the circumferential periphery of the flexible tube 50, so that the base 42 and the movable part 43 are elastically floating and can be elastically reset, flexibly adapting to the change in the spacing between the chamber body 2 and the gas distribution guide rail 46, and protecting the flexible tube 50 to avoid excessive force on the flexible tube 50 when the base 42 and the movable part 43 are relatively active, thereby ensuring the long-term stability of the flexible tube 50 and playing the role of an air path. In order to ensure the sealing and connection stability, flanges are respectively provided at both ends of the flexible tube 50, and the ends of the flexible tube 50 are respectively connected to the base 42 and the movable part 43 through flanges. Preferably, the flexible tube 50 is a corrugated tube with a stable structure, high strength, elastic expansion and contraction deformation, and is not easy to be damaged. Furthermore, the movable part 43 is slidably matched with the base 42, and a guiding mechanism is provided between the movable part 43 and the base 42. Specifically, a protrusion is provided at the edge of the base 42, and a guide bar is provided on the movable part 43 on both sides of the protrusion, and a guide groove is formed between the two guide bars. The protrusion slides along the guide groove to limit and guide the relative movement of the movable part 43 and the base 42. The structure is simple and easy to implement, so that the relative movement between the movable part 43 and the base 42 can be more stable. In this embodiment, the flexible tube 50 is a short length of pipeline, and the relative sliding direction of the movable part 43 and the base 42 defined by the guiding mechanism is along the axial direction of the flexible tube 50, thereby preventing the flexible tube 50 from being subjected to unnecessary lateral impact force, ensuring that the matching piece 41 can stably and reliably form an air path for vacuum extraction.

[0100] Furthermore, the fitting surface 44 is made of a smooth and wear-resistant material, such as polytetrafluoroethylene, polyurethane, etc., to ensure that the fitting surface 44 can be in full and close contact with the rail surface of the gas distribution rail 46, maintain good sealing, thereby ensuring the reliability of vacuuming, small friction resistance, which is conducive to reducing the driving power consumption, good wear resistance, and long service life. In addition, the fitting surface 44 is detachably connected to the base 42. The fitting surface 44 is a consumable part, and will be worn after sliding in contact with the gas distribution rail 46 for a long time. The detachable connection structure is easy to maintain and replace. Specifically, a number of connection holes are set on the fitting surface 44, and the fitting surface 44 is connected to the base 42 by screws, which ensures a tight and stable connection and is easy to replace.

[0101] Therefore, when using this embodiment, the clamping mechanism is driven by the conveying mechanism 2 to move along with the warehouse body 2, and the matching piece 41 moves along with the warehouse body 2. When the matching piece 41 runs onto the air distribution rail 46 and the ventilation inlet 51 of the matching piece 41 is directly connected with the air hole 47 of the air distribution rail 46, the conveying mechanism 2 stops, the clamping mechanism stops at the current position, and the valve of the air hole 47 is opened to vacuum the packaging bag through the warehouse body 2. After performing the vacuum operation for a preset time, the valve of the air hole 47 is closed, and the conveying mechanism 2 starts again to drive the warehouse body 2 to continue moving. When the ventilation inlet 51 of the matching piece 41 is directly connected with the next air hole 47, the valve of the next air hole 47 is opened to pass through The warehouse body 2 performs vacuum operation on the packaging bag, and repeats this process to perform mobile vacuum operation at multiple stations. The vacuum operation time at each station is short, which can improve the overall processing efficiency. In the process of the clamping mechanism moving from the position of the previous air hole 47 to the position of the next air hole 47, the fitting surface 44 of the matching part 41 is fully and tightly fitted on the track surface of the gas distribution guide rail 46. Due to the negative pressure adsorption effect, the track surface of the gas distribution guide rail 46 forms a blockage on the ventilation inlet 51 on the fitting surface 44, so that the warehouse body 2 and the packaging bag will maintain their current vacuum state and continue to perform vacuum operation when they reach the position of the next air hole 47, effectively ensuring the reliability of vacuum operation.

[0102] In some other embodiments, the vacuum pumping mechanism is arranged between track 1 23 and track 3 25. Fig.31(The warehouse body 2 is not shown), the vacuum pumping mechanism includes an air slip ring assembly, and the air slip ring 55 of the air slip ring assembly is provided with a plurality of flexible tubes 2 56 along the rotation circumference, and the flexible tubes 2 56 are respectively connected to the warehouse body 1. Specifically, the vacuum pumping mechanism includes a stator part 54 and an air slip ring 55; the air slip ring 55 and the stator part 54 are rotationally matched, and the air path on the air slip ring 55 and the air path on the stator part 54 are kept in communication when the two rotate relative to each other, and the air slip ring 55 is provided with a plurality of flexible tubes 2 56, and the flexible tubes 2 56 are in communication with the warehouse body 1. Further, the warehouse body 1 is provided with a first wheel group 57 and a second wheel group 58 arranged up and down, the first wheel group 57 and the track 1 23 are slidably matched, and the second wheel group 58 and the track 2 24, the track 3 25, and the track 4 26 are matched; the end of the flexible tube 2 56 away from the air slip ring 55 is connected between the first wheel group 57 and the second wheel group 58. This structure is conducive to reducing the volume of the whole machine, and can prevent the warehouse body 1 from having a long movement path when switching from position 1 to position 2, or from position 3 to position 4. Therefore, on the basis of configuring an appropriate assembly position for the flexible tube 2 56, the compactness of the structure is effectively improved. The warehouse body 1 performs a circular motion along the track assembly. Therefore, during the movement of the warehouse body 1, the driving air slip ring 55 rotates synchronously to prevent the flexible tube 2 56 from being entangled. Furthermore, a rotating joint can be provided at the port of the flexible tube 2 56 to better prevent the flexible tube 2 56 from falling off or leaking due to entanglement. In other embodiments, as Fig.32 As shown, the vacuum pumping mechanism includes a one-way valve 59 arranged on the bin body 1 or the bin body 2, and an air extraction pipeline (not shown in the figure); the air extraction pipeline is arranged beside the parallel path section, and can be switched between the air extraction position and the waiting position. When the air extraction pipeline is in the air extraction position, the air extraction pipeline and the one-way valve 59 cooperate. The axis of the air extraction pipeline is perpendicular to the parallel path section. The air extraction pipeline can be arranged on the outer side of the combined bin body according to actual conditions, such as any one of the front, back, left and right sides, and the same is true for the one-way valve 59. The one-way valve 59 can limit the air outside the combined bin body from entering the combined bin body, and is only opened by the air extraction action of the air extraction pipeline, so the vacuum degree in the combined bin body can be well ensured. Although there will be a process of stopping to wait for vacuum extraction when applying this structure, it has a simple structure, is easy to use, and occupies a small volume, so it has the advantage of a wide range of application conditions. It is understandable that in order to improve the vacuuming efficiency, multiple combined warehouse bodies can be vacuumed at one time. That is, when multiple combined warehouse bodies are located in a parallel path section, multiple exhaust pipes can be set on one side of the parallel path section to vacuum the multiple combined warehouse bodies simultaneously.

[0103] Relative movement is formed between the bin body 1 and the bin body 2 to achieve docking or separation of the bin body 1 and the bin body 2, thereby completing the vacuuming action and the heat sealing action. Specifically, when the bin body 1 and the bin body 2 are docked, a closed combined bin body is formed, and the packaging bag is located in the combined bin body. The combined bin body is vacuumed, and after reaching a predetermined vacuum degree, all the heat sealing mechanisms 4 are driven by the action mechanism 3 to achieve synchronous heat sealing of all the packaging bags. After the heat sealing is completed, the combined bin body is separated into the bin body 1 and the bin body 2, and then the heat-sealed packaging bag is sent out of the heat sealing section. In this embodiment, the heat sealing mechanism 4 is entirely located in the bin body 1, and the action component that drives the heat sealing mechanism 4 to open and close is also entirely located in the bin body 1. As for the linkage member 5, only one end thereof extends out of the bin body 1 to form a driving portion 6, and a dynamic connection point is provided between the linkage member 5 and the bin body 1. The driving portion 6 can reciprocate along the axis of the driving portion 6 relative to the bin body 1, or can rotate around the axis of the driving portion 6 relative to the bin body 1. In either case, it can be connected to the heat sealing mechanism 4 to achieve heat sealing of the mouth of the packaging bag. In other words, the linkage member 5 reciprocates along the arrangement direction of the heat sealing mechanism 4 to drive all the heat sealing mechanisms 4 to open and close synchronously, or the linkage member 5 rotates around its own axis to drive all the heat sealing mechanisms 4 to open and close synchronously.

[0104] like Figure 3 to Figure 5As shown, in this embodiment, the action component includes an opening and closing member 1 7, an opening and closing member 2 8 and a transmission member 9, the opening and closing member 1 7 and the opening and closing member 2 8 are slidably arranged in the warehouse body 1, the heat sealing part 10 of the heat sealing mechanism 4 is connected to the opening and closing member 1 7, the heat sealing part 2 11 of the heat sealing mechanism 4 is connected to the opening and closing member 2 8, the transmission member 9 is arranged on the linkage member 5 and moves with the linkage member 5, the transmission member 9 cooperates with the opening and closing member 1 7 and / or the opening and closing member 2 8 to drive the opening and closing member 1 7 and the opening and closing member 2 8 to move toward each other so that the heat sealing mechanism 4 opens and closes. It should be noted that in the accompanying drawings, two states of opening and closing of the heat sealing mechanism 4 at the same time are shown, which is only a schematic action form. In fact, all heat sealing mechanisms 4 should be opened or closed at the same time. In this embodiment, the opening and closing member 1 7 carries the heat sealing part 1 0 to move, and the opening and closing member 2 8 carries the heat sealing part 2 11 to move. A cross bar 12 is provided in the bin body 1, and the cross bar 12 is perpendicular to the arrangement direction of the heat sealing mechanism 4. The opening and closing member 1 7 and the opening and closing member 2 8 are both slidably connected to the cross bar 12. Therefore, when the linkage member 5 is actuated, the transmission member 9 drives the opening and closing member 1 7 and the opening and closing member 2 8 to slide. It can be seen that in order to realize the opening and closing of the heat sealing part 10 and the heat sealing part 2 11, the opening and closing member 1 7 and the opening and closing member 2 8 move in opposite directions under the drive of the transmission member 9. Specifically, the sliding direction of the opening and closing member 1 7 and the opening and closing member 2 8 is perpendicular to the cross bar 12. The arrangement direction of the heat sealing mechanism 4 is arranged, and the linkage member 5 reciprocates along the arrangement direction of the heat sealing mechanism 4; the transmission member 9 is provided with a guide portion 13 which has an angle with the movement direction of the linkage member 5, and the opening and closing member 1 7 and the opening and closing member 2 8 are respectively provided with an actuating portion 14 which slides with the guide portion 13; or, the opening and closing member 1 7 and the opening and closing member 2 8 are respectively provided with a guide portion 13 which has an angle with the movement direction of the linkage member 5, and the transmission member 9 is provided with an actuating portion 14 which slides with the guide portion 13. In this embodiment, the guide portion 13 is arranged on the transmission member 9, and the actuating portion 14 is arranged on the opening and closing member 1 7 and the opening and closing member 2 8. The guide portion 13 in this embodiment can be configured as a groove, specifically an inclined groove or a curved groove inclined to the moving direction of the linkage member 5. Therefore, when the transmission member 9 moves with the linkage member 5, since the moving directions of the guide portion 13 and the linkage member 5 have an angle, the transmission member 9 can push and pull the actuating portion 14, thereby realizing the pushing and pulling of the opening and closing member 1 7 and the opening and closing member 2 8, so as to realize the opening and closing between the heat sealing portion 10 and the heat sealing portion 2 11. In addition, the guide portion 13 can be configured as an inclined surface, such as Figure 6 and Figure 7As shown, the transmission member 9 includes an active member 15 that slides with the actuating portion 14, and a reset spring 16. Therefore, when the transmission member 9 is in motion, it can drive the opening and closing member 1 7 and the opening and closing member 2 8 to push and open. At this time, when the transmission member 9 moves in the opposite direction, the reset spring 16 can be used to close the opening and closing member 1 7 and the opening and closing member 2 8. Obviously, the opening and closing member 1 7 and the opening and closing member 2 8 can also be driven to close by the action of the transmission member 9, and the opening and closing member 1 7 and the opening and closing member 2 8 can be opened by the reset spring 16. In the above technical solution, the transmission member 9 moves linearly with the linkage member 5. In this embodiment, the opening and closing member 1 7 and the opening and closing member 2 8 can also be slid in the bin body 1 by the rotation of the transmission member 9 to achieve heat sealing. Specifically, Figure 8 As shown, the transmission member 9 is configured as a cam 17, and the cam 17 is provided with an annular groove 18 that cooperates with the actuating portion 14. Therefore, when the linkage member 5 rotates, the cam 17 rotates, and the actuating portion 14 realizes the opening and closing action of the opening and closing member 1 7 and the opening and closing member 2 8 by slidingly cooperating with the annular groove 18. Fig. 9 As shown, the opening and closing member 1 7 and the opening and closing member 2 8 can also be slidably matched with the outer cylindrical surface of the cam 17. Similarly, when resetting, they can be driven to reset by the reset spring 16.

[0105] In another embodiment, the opening and closing member 1 7 and the opening and closing member 2 8 are rotatably arranged in the warehouse body 1. In this embodiment, the linkage member 5 rotates along itself to realize the rotation of the opening and closing member 1 7 and the opening and closing member 2 8. Fig.10 As shown, the opening and closing member 1 7 and the opening and closing member 2 8 are meshed, and the actuating member is configured as a rod connected to the linkage member 5, and the opening and closing member 1 7 or the opening and closing member 2 8 is connected through the actuating member. Therefore, when the linkage member 5 rotates around itself, the opening and closing member 1 7 and the opening and closing member 2 8 can be driven to rotate in the opposite direction, thereby realizing the opening and closing between the heat sealing part 10 and the heat sealing part 2 11.

[0106] In the above embodiment, the opening and closing direction of the heat sealing mechanism 4 is perpendicular to the arrangement direction of the heat sealing mechanism 4. Fig.11 As shown, in some embodiments, the opening and closing direction of the heat sealing mechanism 4 is arranged along the arrangement direction of the heat sealing mechanism 4. The opening and closing member 1 7 and the opening and closing member 2 8 slide along the arrangement direction of the heat sealing mechanism 4, and the linkage member 5 is a rod with positive and negative threads 21. The opening and closing member 1 7 is screwed on the positive thread 20, and the opening and closing member 2 8 is screwed on the negative thread 21, so that the rotation of the linkage member 5 can realize the opening and closing between the heat sealing part 10 and the heat sealing part 2 11.

[0107] It should be noted that, in the above-mentioned embodiments, some of the drawings do not show the cross bar 12. However, it can be known without a doubt that in order to ensure the smooth and stable displacement of the heat sealing part 10 and the heat sealing part 2 11, providing the cross bar 12 is a preferred technical solution.

[0108] like Figure 3 to Figure 5 As shown, in this embodiment, an elastic member 19 is provided between the opening and closing member 17 and the heat sealing part 10, and an elastic member 19 is provided between the opening and closing member 28 and the heat sealing part 211. The opening and closing member 17, the heat sealing part 10, the opening and closing member 28, and the heat sealing part 211 are all slidably arranged on the cross bar 12, so that the opening and closing member 17 and the heat sealing part 10, and the opening and closing member 28 and the heat sealing part 211 can be adjusted by the elastic member 19 to abut against each other, so that each heat sealing mechanism 4 can achieve a good heat sealing action, and the clamping force given by the heat sealing mechanism 4 is controlled within a preset range to ensure the heat sealing effect. It should be noted that in this embodiment, the heat sealing part 10 and the heat sealing part 211 realize the sealing of the packaging bag through the heating plate, and in order to avoid adhesion to the packaging bag caused by heating, a non-woven fabric is also laid on the heating plate.

[0109] like Figure 1 , Figures 15 to 20 As shown, in this embodiment, the conveying mechanism 1 includes a track assembly for constituting a preset path 1; the track assembly includes a track 1 23, a track 24, a track 3 25 and a track 4 26 arranged in sequence along the preset annular conveying path; the track 24 is arranged on a switching mechanism 1 27 to be driven by the switching mechanism 1 27 to switch between position 1 and position 2. When the track 24 is in position 1, the track 24 cooperates with the track 1 23 and is disconnected from the track 3 25. When the track 24 is in position 2, the track 24 is disconnected from the track 1 23 and cooperates with the track 3 25. The track 4 26 is arranged on the switching mechanism 28 to be driven by the switching mechanism 28 to switch between the position 3 and the position 4. When the track 4 26 is in the position 3, the track 4 26 cooperates with the track 1 23 and is disconnected from the track 3 25. When the track 4 26 is in the position 4, the track 4 26 cooperates with the track 1 23 and is connected to the track 3 25. The conveying mechanism 1 also includes a driving mechanism 1 arranged at the track 1 23 to drive the warehouse body 1 arranged on the track assembly to move forward. The parallel path section of the conveying mechanism 1 includes the track 3 25, the track 2 24 in the position 2 and the track 4 26 in the position 4. Specifically, the track 3 25 is a linear track, and the track 1 23 can be one of a curved track and a linear track or a combination of both. It should be noted that the track 1 23, the track 2 24, the track 3 25 and the track 4 26 all have corresponding connecting plates to achieve installation. When the storage body 1 is driven by the driving mechanism to the track 24, the switching mechanism 28 can switch the track 24 from the connecting track 1 23 to the connecting track 3 25 by means of deflection or extension. Fig.14As shown, when a linear reciprocating drive mechanism is used, the switching mechanism 1 27 and the switching mechanism 2 28 can be configured as a telescopic rod mechanism, a screw mechanism, a gear rack mechanism, etc., and the track 1 23 is suitable for being configured as a linear track. Figure 1 and Fig.15 As shown, in this embodiment, the annular conveying path of the track assembly is triangular in shape as a whole, and the track 1 23 has an arc-shaped path segment; the switching mechanism 1 27 drives the track 2 24 to swing to switch between position 1 and position 2, and the switching mechanism 2 28 drives the track 4 26 to swing to switch between position 3 and position 4. In other words, the switching mechanism 1 27 drives the track 2 24 to move along the arc-shaped path, and the switching mechanism 2 28 drives the track 4 26 to move along the arc-shaped path. Further, the switching mechanism 1 27 and the switching mechanism 2 28 can be realized by a disc mechanism, an eccentric motion mechanism, etc. Since track two 24 and track four 26 have an arc-shaped yaw motion, the track volume can be further reduced compared to a linear motion. After utilizing the switching mechanism one 27 / switching mechanism two 28 of the yaw motion, the transmission efficiency is not affected. Furthermore, track two 24, track three 25, and track four 26 in this embodiment are all linear paths. Therefore, in order to ensure the docking accuracy between the tracks and satisfy the smooth movement of the warehouse body 1, when track two 24 docks with track one 23, track two 24 is tangent to track one 23, and the same applies to track four 26 and track one 23. At the same time, the same applies to track two 24 and track three 25, and track four 26 and track three 25.

[0110] like Fig.16 As shown, in this embodiment, the track assembly has a plurality of bins 1, and the bins 1 are provided with a push part 30 at the front side in the direction of travel, and a push part 2 31 at the rear side in the direction of travel. At least one of the bins 1 is driven by a driving mechanism 1 to move forward, and adjacent bins 1 are pushed forward in sequence by the push part 2 31 contacting with the push part 1 30, and the re-driving is realized by the push-pushing method, which can achieve a good driving effect. Further, as Figure 15 to Figure 18 As shown, the driving mechanism 1 includes a toggle member 32 and a transmission member 29. The toggle member 32 is driven by the transmission member 29 to reciprocate along the track 23, and the toggle member 32 pushes the bin 1 to move along the track assembly. The transmission member 29 can be a telescopic mechanism, a lead screw mechanism, a linear module, etc. Further, as Fig.18As shown, the toggle member 32 includes a base 34 transmission-connected to a transmission member 29, and a toggle member 35; the toggle member 35 is movably connected to the base 34 to switch between a working position and an avoidance position. When the transmission member 29 drives the toggle member 32 to move forward, the toggle member 35 is in the working position to push the warehouse body 1 to move forward. When the transmission member 29 drives the toggle member 32 to move backward, the toggle member 35 switches to the avoidance position to avoid the warehouse body 1. In this embodiment, the transmission member 29 drives the toggle member 32 to reciprocate along the track 23. Therefore, when the toggle member 32 moves in the reverse direction along the preset path, it will come into contact with the warehouse body 1 at the rear side of the preset path, which will cause motion interference. Therefore, the toggle member 35 and the base 34 are hinged, that is, when the toggle member 35 contacts the warehouse body 1 at the rear side of the preset path, the toggle member 35 rotates relative to the base 34 to avoid the warehouse body 1 at the rear side of the preset path during the reverse movement. After avoiding, it is reset by the reset member 36. In some embodiments, the reset is achieved by the gravity of the toggle member 35 itself. At this time, a stopper is configured on the base 34 to limit the movement of the toggle member 35. At this time, the movement avoidance of the warehouse body 1 at the rear side of the preset path and the reset after avoiding are also achieved. Therefore, the switching method of the toggle member 35 between the working position and the avoidance position is simple and easy to achieve, which can well meet the driving requirements of the warehouse body 1.

[0111] like Fig.19 and Fig. 20 As shown, in another embodiment, the driving mechanism includes a transmission member 2 37, and the transmission member 2 37 is a conveyor chain or a conveyor belt. In the transmission member 2 37 and the warehouse body 1, one of them has a protrusion 38, and the other has a matching portion 39 that engages with the protrusion 38. Compared with the above embodiment, this embodiment does not need to realize the movement of the warehouse body 1 by pushing, that is, when the driving mechanism includes the transmission member 2 37, each warehouse body 1 moves independently, so when the track assembly is triangular, it can avoid the warehouse body 1 from sliding due to gravity on the downward path (track 2 24), thereby avoiding the preset operation error of the warehouse body 1, and also avoiding the collision of two adjacent warehouse bodies 1.

[0112] The protrusion 38 is arranged on the warehouse body 1, so that the matching portion 39 is configured as the gap between two adjacent chain links. That is to say, when the warehouse body 1 transitions from the track 4 26 to the track 1 23 and from the track 1 23 to the track 2 24, the protrusion 38 extends into the gap between the two adjacent chain links, thereby realizing the driving of the warehouse body 1 during the cyclic movement of the transmission component 2 37.

[0113] like Figure 1As shown, in this embodiment, it also includes a power source 22 acting on the driving part 6, and the power source 22 moves along the preset path 1 with the warehouse body 1. The fixed end of the power source 22 is set on the warehouse body 1, and is connected to the driving part 6 of the linkage 5 through a connecting rod mechanism. In some other embodiments, the power source 22 is set at a preset position on the preset path 1 where the warehouse body 1 moves. A heat sealing section is set on the preset path 1. In one embodiment, as shown in FIG. Fig. 12A and Fig. 12B As shown, the free end of the power source 22 and the driving part 6 are slidably matched, and the power source 22 is fixed at a certain point in the heat sealing section. The bin body 1 moves to the point along the preset path 1, and realizes the sliding match with the power source 22, and then stops, and then the power source 22 is started to realize the heat sealing action. After the heat sealing action is completed, the power source 22 is reset, and the bin body 1 continues to move along the preset path 1 to realize the separation of the driving part 6 and the power source 22; Fig.13 As shown, in another embodiment, the difference from the above-mentioned embodiment is that the driving part 6 of the power source 22 is matched with the driving part 6 by pushing and docking.

[0114] Therefore, when the packaging machine of this embodiment is used, when the packaging machine needs to seal the packaging bag, it is generally necessary to evacuate the packaging bag to extend the shelf life of the packaging bag. In this embodiment, the bin body 1 moves to the track 3 25 under the drive of the driving mechanism 1. Similarly, the bin body 2 moves to the parallel track section of the preset path 2 (parallel to the track 3 25) under the drive of the driving mechanism 2, so that the bin body 1 located on the track 3 25 and the bin body 2 2 located on the parallel track section are docked. At this time, vacuuming is achieved through the air holes on the gas distribution guide rail in the combined bin body. That is to say, the vacuuming action of the combined bin body is performed through the bin body 2, and the vacuum space is formed by extracting the air between the bin body 1 and the bin body 2 2, so that the bin body 1 and the bin body 2 2 are tightly fitted together by negative pressure to form a combined bin body. The combined bin body is driven by the driving mechanism 2. During the movement of the combined bin body, the heat sealing mechanism 4 is used to heat seal the mouth of the packaging bag. It can be seen that this process is performed after the vacuuming is completed. Figure 1 As shown, in this embodiment, a conveying track is arranged to form a preset path 2 of the warehouse body 2, and the driving mechanism 2 is configured as a gear chain component. The movement of the warehouse body 2 or the combined warehouse body is realized by the gear chain component, thereby realizing the vacuuming of the combined warehouse body and the heat sealing of the packaging bag on the parallel path segment.

[0115] The above are only preferred embodiments of the present invention. It should be noted that the above preferred embodiments should not be regarded as limiting the present invention, and the protection scope of the present invention should be based on the scope defined by the claims. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the spirit and scope of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A packaging machine, characterized in that: include: A conveying mechanism 1, wherein the conveying mechanism 1 is provided with a bin body 1, and the conveying mechanism 1 drives the bin body 1 to move along a preset path, wherein an action mechanism and at least two heat-sealing mechanisms arranged side by side are arranged in the bin body 1; the action mechanism comprises a linkage member and an action assembly, wherein the linkage member is extended and arranged along the arrangement direction of the heat-sealing mechanisms, and the linkage member is respectively connected with each of the heat-sealing mechanisms through the action assembly to drive all the heat-sealing mechanisms to move synchronously, and the linkage member passes through the bin body 1 to form a driving part; and Conveying mechanism 2, wherein the conveying mechanism 2 is provided with a bin body 2, the conveying mechanism 2 drives the bin body 2 to move along a preset path 2, and the bin body 2 is provided with a clamping mechanism for fixing the packaging bag; Wherein, the preset path 1 and the preset path 2 both have parallel path segments parallel to each other, and the warehouse body 1 and the warehouse body 2 are connected in the parallel path segment to form a closed combined warehouse body for traveling; It also includes a vacuum pumping mechanism, which performs a vacuum pumping operation on the combined bin bodies in the parallel path section.

2. A packaging machine according to claim 1, wherein the vacuum extraction mechanism comprises: A gas distribution rail, the gas distribution rail is arranged along a parallel path section, and a plurality of air holes are arranged at intervals on the rail surface of the gas distribution rail; as well as A matching piece, the matching piece is arranged on the first bin body or the second bin body, the matching piece is provided with an air passage for communicating with the air hole, the air passage is communicated with the first bin body or the second bin body, and is also provided with a fitting surface for fitting with the surface of the gas distribution rail to move along the gas distribution rail, and the fitting surface is provided with a ventilation inlet of the air passage; Wherein, transition rails are respectively connected at both ends of the valve guide rail, and there is a preset height difference of one between the rail surface of the transition rail and the rail surface of the valve guide rail, and a guide wheel for traveling along the transition rail is arranged on the matching part, and there is a preset height difference of two between the traveling surface formed by the guide wheel and the fitting surface, and the preset height difference of one is equal to the preset height difference of two; Alternatively, the vacuum pumping mechanism comprises: An air slip ring assembly, wherein a plurality of flexible tubes 2 are arranged on the air slip ring of the air slip ring assembly along the rotation circumference, and the flexible tubes 2 are respectively connected to the warehouse body 1; Alternatively, the vacuum pumping mechanism comprises: A one-way valve provided on the first or second bin body; The air extraction pipeline is arranged beside the parallel path section and can be switched between the air extraction position and the waiting position for extraction. When the air extraction pipeline is located at the air extraction position, the air extraction pipeline cooperates with the one-way valve.

3. A packaging machine as claimed in claim 1, characterized in that: The conveying mechanism 1 includes a track assembly for forming a preset path 1; The track assembly includes track 1, track 2, track 3 and track 4 which are sequentially arranged along a preset annular conveying path; The track 2 is arranged on the switching mechanism 1 to be driven by the switching mechanism 1 to switch between the position 1 and the position 2. When the track 2 is in the position 1, the track 2 cooperates with the track 1 and is disconnected from the track 3. When the track 2 is in the position 2, the track 2 is disconnected from the track 1 and cooperates with the track 3. The track 4 is arranged on the switching mechanism 2 so as to be driven by the switching mechanism 2 to switch between the position 3 and the position 4. When the track 4 is in the position 3, the track 4 cooperates with the track 1 and is disconnected from the track 3. When the track 4 is in the position 4, the track 4 cooperates with the track 1 and is connected to the track 3. The conveying mechanism 1 also includes a driving mechanism 1 arranged at a place of the track to drive a bin body arranged on the track assembly to move forward; The parallel path section of the conveying mechanism 1 includes track 3, track 2 at position 2, and track 4 at position 4.

4. A packaging machine as claimed in claim 3, characterized in that: The annular conveying path of the track assembly is triangular in shape as a whole, and the track 1 has an arc-shaped path segment; The switching mechanism 1 drives the track 2 to swing and switch between position 1 and position 2, and the switching mechanism 2 drives the track 4 to swing and switch between position 3 and position 4.

5. A packaging machine as claimed in claim 3, characterized in that: The driving mechanism 1 comprises: A toggle assembly and a transmission component 1, wherein the toggle assembly is driven by the transmission component 1 to reciprocate along the track 1, and the toggle assembly pushes the bin body 1 to move along the track assembly; Alternatively, the second driving mechanism comprises: Transmission component 2, the transmission component 2 is a conveyor chain or a conveyor belt. Among the transmission component 2 and the warehouse body 1, one of them has a protrusion, and the other has a matching part connected with the protrusion.

6. A packaging machine as claimed in claim 1, characterized in that: Also includes: A power source acting on the driving part, wherein the power source moves along a preset path with the bin body; Alternatively, the power source is arranged at a preset station on a preset path where the warehouse body moves.

7. A packaging machine as claimed in claim 1, characterized in that: The linkage member reciprocates along the arrangement direction of the heat sealing mechanism to drive all the heat sealing mechanisms to open and close synchronously; Alternatively, the linkage member rotates around its own axis to drive all the heat sealing mechanisms to open and close synchronously.

8. A packaging machine as claimed in claim 1, characterized in that: The action component includes an opening and closing member 1, an opening and closing member 2 and a transmission member. The opening and closing member 1 and the opening and closing member 2 are slidably or rotatably arranged in the warehouse body 1. The heat sealing part 1 of the heat sealing mechanism is connected with the opening and closing member 1, and the heat sealing part 2 of the heat sealing mechanism is connected with the opening and closing member 2. The transmission member is arranged on the linkage member and moves with the linkage member. The transmission member cooperates with the opening and closing member 1 and / or the opening and closing member 2 to drive the opening and closing member 1 and the opening and closing member 2 to move toward each other so that the heat sealing mechanism opens and closes.

9. A packaging machine as claimed in claim 8, characterized in that: The sliding directions of the opening and closing member 1 and the opening and closing member 2 are perpendicular to the arrangement direction of the heat sealing mechanism, and the linkage member reciprocates along the arrangement direction of the heat sealing mechanism; A guiding part having an angle with the moving direction of the linkage part is arranged on the transmission part, and an actuating part which slides with the guiding part is arranged on the opening and closing part one and the opening and closing part two respectively, or a guiding part having an angle with the moving direction of the linkage part is arranged on the opening and closing part one and the opening and closing part two respectively, and an actuating part which slides with the guiding part is arranged on the transmission part.

10. A packaging machine as claimed in claim 8, characterized in that: An elastic member is arranged between the first opening and closing member and the first heat sealing part, and an elastic member is arranged between the second opening and closing member and the second heat sealing part.

11. A packaging machine according to claim 1, characterized in that: The opening and closing direction of the heat sealing mechanism is perpendicular to the arrangement direction of the heat sealing mechanism; Alternatively, the opening and closing direction of the heat sealing mechanism is arranged along the arrangement direction of the heat sealing mechanism.

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