Packaging device

Abstract

The invention belongs to the field of packaging, and discloses a packaging device which comprises a first conveying mechanism and a second conveying mechanism. The first conveying mechanism is provided with a first bin body, the first conveying mechanism drives the first bin body to advance along a first preset path, and the first bin body is provided with a heat sealing mechanism used for conducting heat sealing on the opening portion of a packaging bag. The second conveying mechanism is provided with a second bin body, the second conveying mechanism drives the second bin body to advance along a second preset path, and the second bin body is provided with a clamping mechanism used for fixing packaging bags. The first preset path and the second preset path are provided with parallel path sections which are parallel to each other, and the first bin body and the second bin body are in butt joint in the parallel path sections to form a closed combined bin body; the device further comprises a vacuumizing mechanism, and the vacuumizing mechanism conducts vacuumizing operation on the combined bin bodies in the parallel path sections. Vacuum pumping and heat sealing can be achieved on the conveying path of the packaging bag, so that the overall packaging efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the field of packaging, and in particular relates to a packaging device. 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] In the current packaging process, the vacuuming step is performed after the packaging bag reaches the fixed vacuuming section. Specifically, the stage from the completion of the loading process to the start of the sealing process belongs to the vacuuming process. The total time of this process includes: the time to transport the packaging bag from the loading station to the vacuuming section, the actual vacuuming time, and the time to transport the packaging bag to the sealing station after the vacuuming is completed. Obviously, the transportation time of the packaging bag occupies a large proportion of the vacuuming process, which is not conducive to improving the overall packaging efficiency. Summary of the invention

[0004] In order to solve the above technical problems, the present invention discloses a packaging device, which can realize vacuuming and heat sealing on the conveying path of the packaging bag to improve the overall packaging efficiency.

[0005] The specific technical solutions of the present invention are as follows:

[0006] A packaging device, comprising:

[0007] A conveying mechanism 1, wherein 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, and the bin body 1 is provided with a heat sealing mechanism for heat-sealing the mouth of the packaging bag; and

[0008] 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;

[0009] Wherein, the preset path 1 and the preset path 2 both have parallel path segments parallel to each other, and the bin body 1 and the bin body 2 are butted together in the parallel path segments to form a closed combined bin body;

[0010] It also includes a vacuum pumping mechanism, which performs a vacuum pumping operation on the combined bin bodies in the parallel path section.

[0011] During the movement of conveying bin body 1 by conveying mechanism 1 and the movement of conveying bin body 2 by conveying mechanism 2, a combined bin body is formed by docking in the vacuum section, and the gas in the combined bin body is extracted by the vacuum mechanism, so that bin body 1 and bin body 2 are tightly docked through negative pressure. At this time, the combined bin body continues to move along the vacuum section. Since a packaging bag is clamped in bin body 1, the air in the packaging bag is also extracted during the vacuuming 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.

[0012] Preferably, the conveying mechanism 1 includes a track assembly for forming a preset path 1;

[0013] The track assembly includes track 1, track 2, track 3 and track 4 which are sequentially arranged along a preset annular conveying path;

[0014] 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.

[0015] 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.

[0016] The track is provided with a driving mechanism to drive the warehouse body arranged on the track assembly to move forward;

[0017] The parallel path segment of the conveying mechanism 1 includes track 3, track 2 at position 2, and track 4 at position 4;

[0018] The track is provided with a second driving mechanism at three locations and / or the conveying mechanism is provided with a third driving mechanism to drive the combined warehouse body to move along the parallel path segment.

[0019] 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.

[0020] 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;

[0021] The switching mechanism 1 drives the track 2 to swing to switch between position 1 and position 2, and the switching mechanism 2 drives the track 4 to swing to switch between position 3 and position 4;

[0022] The middle section of the track 1 is an arc-shaped path section, and the track 1 is provided with straight path sections at both ends of the arc-shaped path section, and each of the two straight path sections has a driving mechanism 1.

[0023] This structure can save the assembly volume of the track assembly, which is beneficial to reducing the assembly time and improving the process efficiency; the switching mechanism 1 and the switching mechanism 2 are yaw movements, so their movement paths are arc-shaped, and the structure is more compact and can better utilize the limited space for layout; and this structure can improve the movement efficiency of the warehouse body 1, and make the track 2 and the track 4 better in the same straight line with the track 2 and the track 4 when connecting the track 1 and the track 3, thereby ensuring the movement stability of the warehouse body 1.

[0024] Preferably, the connecting surface between the track 2 and the track 1, and the connecting surface between the track 2 and the track 3, are located on the deflection path of the switching mechanism 1;

[0025] The connecting surface between the track four and the track one, and the connecting surface between the track four and the track three, are located on the deflection path of the switching mechanism two.

[0026] The above four connecting surfaces all correspond to the arc path, so as to achieve smooth and compact docking on the basis of avoiding motion interference, which is beneficial to reducing the gap between the tracks, thereby ensuring the smooth movement of the warehouse body.

[0027] Preferably, the driving mechanism 1 comprises:

[0028] 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;

[0029] Wherein, the toggle assembly comprises:

[0030] A base drivingly connected to the first driving member; and

[0031] A toggle member, the toggle member is movably connected and arranged on the base to switch between a working position and an avoidance position. When the transmission member 1 drives the toggle member to move forward, the toggle member is in the working position to push the bin body to move forward. When the transmission member 1 drives the toggle member to move backward, the toggle member switches to the avoidance position to avoid the bin body 1.

[0032] Alternatively, the driving mechanism 1 comprises:

[0033] 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.

[0034] The driving mechanism is simple in structure, small in volume, and has high driving efficiency. When the driving mechanism includes a toggle member and a transmission member, when the transmission member is in motion, the toggle member first moves along the track in a preset path to drive the bin body, and then the toggle member moves in the reverse direction along the track in a preset path to reach the driving position for the next bin body, and when it moves along the track in a preset path again, the bin body can be driven, thereby driving multiple bin bodies. Since there is a relative movement between the toggle member and the base, Therefore, when the toggle member moves in the reverse direction along the preset path one, the position switching of the toggle member can be realized, so as to avoid the rear warehouse body one, and after avoiding, the position switching is performed again and reset to a position suitable for the movement of the toggle warehouse body one, so that the toggle member is located at a position suitable for the movement of the toggle warehouse body one; when the driving mechanism one 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.

[0035] Preferably, the toggle member and / or the storage body are provided with an inclined surface avoidance portion, so that when the toggle member is reversed, the toggle member is driven to switch to the avoidance position through the inclined surface avoidance portion.

[0036] When the toggle member moves along the direction of the preset path one, the toggle member and the rear bin body one are avoided through the inclined avoidance portion, thereby effectively avoiding movement interference.

[0037] Preferably, the heat sealing mechanism is provided with a heat sealing knife 1 and a heat sealing knife 2, and a return spring is provided between the heat sealing knife 1 and the bin body 1, and between the heat sealing knife 2 and the bin body 1;

[0038] A push-pull mechanism is provided at the end of the parallel path section for driving the heat sealing knife 1 and the heat sealing knife 2 to move in opposite directions;

[0039] The driving parts of the heat sealing knife 1 and the heat sealing knife 2 pass through the bin body 1, and the push-pull mechanism drives the driving parts to move outside the bin body 1 to drive the heat sealing mechanism to operate.

[0040] The heat sealing mechanism drives the first heat sealing knife and the second heat sealing knife through a push-pull mechanism to achieve heat sealing on the mouth of the packaging bag. After the heat sealing is completed, the first heat sealing knife and the second heat sealing knife are opened by a return spring, so that heat sealing is achieved on the path of the combined bin body moving along the vacuum section with a compact structure, thereby saving process time and improving the process efficiency of the packaging equipment.

[0041] Preferably, the driving part of the heat sealing knife 1 is configured as driving part 1, and the driving part of the heat sealing knife 2 is configured as driving part 2, and the driving part 1 and the driving part 2 extend to the same side of the exterior of the warehouse body 1;

[0042] The push-pull mechanism comprises a driving wheel that can rotate around its own axis, one side of the driving wheel is provided with an actuating part 1 that cooperates with the driving part 1, and the other side is provided with an actuating part 2 that cooperates with the driving part 2;

[0043] Among them, one of the actuating part 1 and the actuating part 2 is a cam with a changing outer diameter, and the other is a cam groove with a changing inner diameter, so as to drive the heat sealing knife 1 and the heat sealing knife 2 to move towards each other on the same side.

[0044] The structure is simple. The driving part 1 and the actuating part 1 cooperate with each other through the rotation of the driving wheel, and the driving part 2 and the actuating part 2 cooperate with each other, so as to realize the simultaneous pushing and pulling of the driving part 1 and the driving part 2, realize the relative movement of the heat sealing knife 1 and the heat sealing knife 2, and realize the heat sealing of the packaging bag.

[0045] Preferably, a notch is also provided on the outer circumference of the driving wheel.

[0046] The notch portion is an opening for driving part 1 and driving part 2 to enter and exit the driving wheel to cooperate with actuating part 1 and actuating part 2; under the action of switching mechanism 2, track 4 switches from position 4 to position 3, so that the warehouse body 1 moves up and down, and the notch portion is also used for the warehouse body 1 to move up and down to avoid motion interference.

[0047] Preferably, the track assembly has multiple bin bodies 1, and the bin body 1 is provided with a pushing portion 1 on the front side in the direction of travel, and a pushing portion 2 is provided on the rear side in the direction of travel. At least one of the bin bodies 1 is driven to move forward by a conveying mechanism 1, and adjacent bin bodies 1 are pushed forward in sequence by the contact between the pushing portion 2 and the pushing portion 1.

[0048] When moving along a preset path, the conveying mechanism 1 can drive the rear bin body 1, and because the front bin body 1 needs to keep moving to enter the track 2, the rear bin body 1 is used to push the front bin body 1 to move, so as to ensure that the front bin body 1 enters the track 2, so that the switching component 1 can drive the bin body 1 to enter the track 3 to perform the corresponding process operation.

[0049] Preferably, a sliding contact power supply component is provided between the warehouse body 1 and the track assembly, wherein a sliding contact line is laid on the track assembly, and a brush cooperating with the sliding contact line is provided on the warehouse body 1.

[0050] The sliding contact power supply component can provide conduction current for the components that need to be powered in the circulating conveying mechanism, thereby meeting actual use requirements, and the sliding contact power supply component is adapted to the track component setting, and can ensure working stability.

[0051] Preferably, the vacuum pumping mechanism comprises:

[0052] A gas distribution rail, the gas distribution rail is arranged along the vacuum pumping section, and a plurality of air holes are arranged at intervals on the rail surface of the gas distribution rail; and

[0053] 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;

[0054] 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;

[0055] Alternatively, the vacuum pumping mechanism comprises:

[0056] 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;

[0057] Alternatively, the vacuum pumping mechanism comprises:

[0058] A one-way valve provided on the first or second bin body;

[0059] 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.

[0060] 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.

[0061] Preferably, the matching piece includes:

[0062] A base, the bottom surface of which is provided with the fitting surface; and

[0063] The movable part is connected with a flexible tube 1 between the movable part and the base, the movable part and the base are provided with cavities to communicate with the flexible tube 1 to form the ventilation channel, the movable part is connected with the warehouse body 1 or the warehouse body 2, and the ventilation outlet of the ventilation channel is provided on the movable part to communicate with the warehouse body 1 or the warehouse body 2.

[0064] The matching piece is a connecting component, which connects the warehouse body one or the warehouse body two. During the movement of the warehouse body one or the warehouse body two, it is difficult to maintain high-precision consistency with the path of the gas distribution rail. The matching piece is used to flexibly adapt to the change in the spacing between the warehouse body two and the gas distribution rail. The base and the movable part can move relative to each other through the flexible tube one and ensure the connectivity of the gas path. It is ensured that the matching piece can stably maintain tightness with the gas distribution rail during the movement of the warehouse body one or the warehouse body two, thereby ensuring the reliability of vacuum extraction.

[0065] Compared with the prior art, the present invention can well solve the problems of vacuuming and heat sealing, realize vacuuming and heat sealing on the conveying path of the packaging bag, and effectively improve the packaging efficiency of the packaging equipment; the present invention can reduce the synchronization of the conveying rate between the conveying mechanism one and the conveying mechanism two, and reduce the difficulty of implementation; in addition, the setting of the vacuuming mechanism in the present invention can effectively avoid collision and impact, ensure the stable operation of the equipment, ensure the long-term and stable operation of the vacuuming, and ensure the efficiency and effect of the vacuuming. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] Figure 1 is a schematic diagram of an embodiment of the present invention;

[0067] Figure 2 A schematic diagram of a conveying mechanism 1 in an embodiment of the present invention;

[0068] Figure 3 A schematic diagram of a conveying mechanism 1 in an embodiment of the present invention;

[0069] Figure 4 for Figure 3 Schematic diagram of the other direction;

[0070] Figure 5 for Figure 4 A magnified image of point A;

[0071] Figure 6 for Figure 4 A magnified view of point B;

[0072] Figure 7 A schematic diagram of a toggle assembly according to an embodiment of the present invention;

[0073] Figure 8 for Figure 4 Enlarged view of point C;

[0074] Fig. 9 Schematic diagram of a heat sealing mechanism in an embodiment of the present invention;

[0075] Fig.10 Schematic diagram of the connection between the heat sealing mechanism and the bin body 1 in an embodiment of the present invention;

[0076] Fig.11 Schematic diagram of a push-pull mechanism in an embodiment of the present invention;

[0077] Fig.12 Schematic diagram of cam groove surface 1 in an embodiment of the present invention;

[0078] Fig.13 Schematic diagram of cam groove surface 2 in an embodiment of the present invention;

[0079] Fig.14 Schematic diagram of a second driving mechanism according to an embodiment of the present invention;

[0080] Fig.15 Schematic diagram of a vacuum pumping mechanism in an embodiment of the present invention;

[0081] Fig.16 A schematic diagram of a transition rail in an embodiment of the present invention;

[0082] Fig.17 for Fig.16 The enlarged view of point D;

[0083] Fig.18 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;

[0084] Fig.19 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;

[0085] Fig. 20 A schematic diagram of a matching piece in one direction in an embodiment of the present invention;

[0086] Fig.21 A schematic diagram of a matching piece in another direction according to an embodiment of the present invention;

[0087] Fig. 22 A cross-sectional view of a matching piece in an embodiment of the present invention;

[0088] Fig.23 It is a structural schematic diagram of the hidden movable part of the matching piece in an embodiment of the present invention;

[0089] Fig.24 It is a schematic diagram of the arrangement of the transmission component 2 in an embodiment of the present invention;

[0090] Fig.25 A schematic diagram of a vacuum pumping mechanism according to an embodiment of the present invention;

[0091] Fig.26 for Fig.25 A front view of

[0092] Fig. 27 A schematic diagram of a vacuum pumping mechanism according to an embodiment of the present invention;

[0093] Fig.28 A schematic diagram of a vacuum pumping mechanism according to an embodiment of the present invention;

[0094] Fig.29 Schematic diagram of a vacuum pumping mechanism in an embodiment of the present invention.

[0095] In the figure: 100-transport mechanism 1; 200-transport mechanism 2; 1-bin 1; 2-heat sealing mechanism; 3-bin 2; 4-clamping mechanism; 5-vacuuming section; 6-carrier 1; 7-track 1; 8-track 2; 9-track 3; 10-track 4; 11-switching mechanism 1; 12-switching mechanism 2; 13-bearing seat; 14-rotating shaft; 15-connecting rod; 16-cam; 17-pushing part 1; 18-pushing part 2; 19-joining surface; 20-transmission component 1; 21-base; 22-sliding member; 23-resetting member; 24-inclined surface 1; 25-inclined surface 2; 26-heat sealing knife 1; 27-heat sealing knife 2; 28-resetting spring; 29-push-pull mechanism; 30-driving part 1; 31-driving part 2; 32-driving wheel; 33-cam groove surface one; 34-cam groove surface two; 35-motor; 36-entrance; 37-holding part; 38-exit; 39-entrance groove; 40-exit groove; 41-transition section; 42-conductor wire; 43-matching piece; 44-base; 45-movable part; 46-flexible tube one; 47-fitting surface; 48-ventilation inlet; 49-ventilation outlet; 50-guide wheel; 51-elastic part; 52-gas distribution guide rail; 53-air hole; 54-transition rail; 55-guide slope; 56-transmission component two; 57-protrusion; 58-matching part; 59-stator part; 60-gas slip ring; 61-flexible tube two; 62-first wheel group; 63-second wheel group; 64-one-way valve. DETAILED DESCRIPTION

[0096] 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.

[0097] like Figure 1 , Figure 3 , Fig.14 As shown, a packaging device includes a conveying mechanism 100 and a conveying mechanism 200; the conveying mechanism 100 is provided with a warehouse body 1, the conveying mechanism 100 drives the warehouse body 1 to move along a preset path, and the warehouse body 1 is provided with a heat sealing mechanism 2 for heat-sealing the mouth of a packaging bag; the conveying mechanism 200 is provided with a warehouse body 2 3, the conveying mechanism 200 drives the warehouse body 2 3 to move along a preset path 2, and the warehouse body 2 3 is provided with a clamping mechanism 4 for fixing the packaging bag; the preset path 1 and the preset path 2 both have parallel path sections parallel to each other, and the parallel path sections are configured as a vacuuming section 5, the warehouse body 1 and the warehouse body 2 3 are connected at the vacuuming section 5 to form a closed combined warehouse body, and move along the vacuuming section 5, and also include a vacuuming mechanism, and the vacuuming mechanism performs a vacuuming operation on the combined warehouse body in the parallel path section.

[0098] In this embodiment, the conveying mechanism 100 drives the warehouse body 1 to move along the preset path 1, and the conveying mechanism 200 drives the warehouse body 2 3 to move along the preset path 2. The preset path 1 and the preset path 2 are both annular paths. Therefore, in the process of the movement of the warehouse body 1 and the warehouse body 2 3, 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 3 are located in the vacuum pumping section 5, 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 vacuum pumping section 5. At this time, the packaging bag is clamped on both vertical sides by the clamping mechanism 4 in the warehouse body 2 3, 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, the mouth of the packaging bag is heat-sealed by the heat-sealing mechanism 2 at the end of the vacuum pumping section 5, 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 the clamping mechanism 4 is provided with a plurality of clamps in parallel, so that a plurality of packaging bags can be placed in parallel on the clamping mechanism 4, and then a plurality of packaging bags can be vacuumed at the same time, effectively improving the overall processing efficiency and greatly increasing the production capacity. It can also be known that the heat sealing mechanism 2 also corresponds to the clamping arrangement, and the heat sealing mechanism 2 includes a plurality of heat sealing components arranged in parallel.

[0099] like Figure 3 and Figure 4As shown, in this embodiment, the conveying mechanism 100 includes a carrier 16 and a track assembly, and the track assembly is used to form a preset path 1; the track assembly includes a track 17, a track 28, a track 39 and a track 410 arranged in sequence along the preset annular conveying path; the track 28 is arranged on a switching mechanism 11 to be driven by the switching mechanism 11 to switch between position 1 and position 2, when the track 28 is in position 1, the track 28 cooperates with the track 17 and is disconnected from the track 39, when the track 28 is in position 2, the track 28 is disconnected from the track 17 and cooperates with the track 39; the track 410 is arranged on a switching mechanism 212 to be driven by the switching mechanism 212 to switch between position 3 and position 4, and the track 410 is at When in position three, the track four 10 cooperates with the track one 7 and is disconnected from the track three 9. When the track four 10 is in position four, the track four 10 cooperates with the track one 7 and is connected to the track three 9. The track one 7 is provided with a driving mechanism one to drive the carrier one 6 set on the track component to move forward, and the warehouse body one 1 is set on the carrier one 6. In other words, the track one 7 is provided with a driving mechanism one to drive the warehouse body one 1 set on the track component to move forward; the parallel path segment of the conveying mechanism one 100 includes the track three 9, the track two 8 in position two, and the track four 10 in position four; the track three 9 is provided with a driving mechanism two and / or the conveying mechanism two 200 is provided with a driving mechanism three to drive the combined warehouse body to move along the parallel path segment. When the bin body 1 and the bin body 2 3 are docked to form a combined bin body, the combined bin body moves along the vacuum section 5 under the action of the vacuuming mechanism, the conveying mechanism 1 100 and / or the conveying mechanism 2 200, and the heat sealing mechanism 2 performs heat sealing at the end of the vacuum section 5.

[0100] In this embodiment, the track 3 9 is a straight track, and the track 1 7 can be one of a curved track and a straight track or a combination of the two. It should be noted that the track 1 7, the track 2 8, the track 3 9, and the track 4 10 all have corresponding connecting plates (not shown in the figure) to achieve installation. When the carrier 1 6 is driven to the track 2 8 by the driving mechanism 1, the switching mechanism 2 12 can switch the track 2 8 from the connecting track 1 7 to the connecting track 3 9 by means of deflection or translation (lifting). Figure 2 As shown, when the lifting method is adopted, the switching mechanism 11 and the switching mechanism 2 12 can be configured as a telescopic rod mechanism or a screw mechanism or a gear rack mechanism, etc. At this time, the track 1 7 is suitable for being configured as a linear track. In this embodiment, the annular conveying path of the track assembly is triangular in shape as a whole, such as Figure 1 , Figure 3 , Figure 4As shown, the track 1 7 has an arc-shaped path segment; the switching mechanism 1 11 drives the track 2 8 to swing to switch between position 1 and position 2, and the switching mechanism 2 12 drives the track 4 10 to swing to switch between position 3 and position 4. In other words, the switching mechanism 1 11 drives the track 2 8 to move along the arc-shaped path, and the switching mechanism 2 12 drives the track 4 10 to move along the arc-shaped path. Further, the switching mechanism 1 11 and the switching mechanism 2 12 can be realized by a disc mechanism, an eccentric motion mechanism, etc. Since track two 8 and track four 10 have an arc-shaped yaw motion, the track volume can be further reduced compared to a linear motion. After utilizing the switching mechanism one 11 / switching mechanism two 12 of the yaw motion, the transmission efficiency is not affected. Furthermore, track two 8, track three 9, and track four 10 in this embodiment are all linear paths. Therefore, in order to ensure the docking accuracy between the tracks and satisfy the smooth movement of carrier one 6, when track two 8 docks with track one 7, track two 8 is tangent to track one 7, and the same applies to track four 10 and track one 7. At the same time, the same applies to track two 8 and track three 9, and track four 10 and track three 9.

[0101] like Figure 3 As shown, further, the switching mechanism 1 11 and the switching mechanism 2 12 in this embodiment adopt an eccentric motion mechanism, specifically, also include a bearing seat 13 and an eccentric motion mechanism corresponding to the switching mechanism 1 11 / switching mechanism 2 12, the switching mechanism 1 11 / switching mechanism 2 12 are connected to the bearing seat 13, and driven by the eccentric motion mechanism to switch positions between track 1 7 and track 3 9. Taking the switching mechanism 1 11 as an example, the eccentric motion mechanism includes a rotating shaft 14 and a connecting rod 15, the rotating shaft 14 is provided with a cam 16, one end of the connecting rod 15 is hinged to the cam 16, and the other end is hinged to the track 2 8, so that the rotating shaft 14 rotates around its own axis, and the eccentric motion of the cam 16 causes the connecting rod 15 to drive the track 2 8 to swing, thereby realizing the position conversion between track 1 7 and track 3 9.

[0102] In this embodiment, if Figure 3 and Figure 4As shown, in order to simplify the configuration difficulty and improve the debugging efficiency, the middle section of the track 17 is an arc-shaped path section, and the track 17 is provided with straight path sections at both ends of the arc-shaped path section, and each of the two straight path sections has a driving mechanism 1. In other words, each driving mechanism 1 drives the carrier 16 to drive the straight path section where it is located, and in order to make the carrier 16 pass through the arc-shaped path section better and enter the track 28 well, in this embodiment, the track assembly has a plurality of carriers 16, and the carrier 16 is provided with a pushing portion 17 on the front side of its travel direction, and a pushing portion 2 18 on the rear side of its travel direction, and at least one of the carriers 16 is driven to travel by the driving mechanism 1, and adjacent carriers 6 are pushed and moved in sequence by the pushing portion 2 18 abutting against the pushing portion 17. As shown Figure 4 , Figure 5 As shown, the front carrier 6 is carrier A, and the rear carrier 6 is carrier B, whereby carrier B is driven by a driving mechanism to push carrier A to move. It should be noted that the track assembly has multiple carriers 6, so the re-driving is achieved by pushing, which can achieve a good driving effect. At this time, the track 7 has an arc-shaped path section. Therefore, in order to avoid the pushed carrier A from being unable to slide along the track 7 due to the change in curvature, one of the pushing part 18 and the pushing part 17 is a guide wheel 50, and the other has an arc-shaped matching part. When carrier B is driven, the guide wheel 50 is pushed by the arc-shaped matching part, and then carrier A moves. When reaching the arc-shaped path section, the guide wheel 50 rolls along the arc-shaped matching part. It should be noted that, as Figure 4 As shown, when the carrier 16 is located on the track 17, it can be seen that in the travel direction of the carrier 16, the pushing portion 17 is an arc-shaped matching portion, and the pushing portion 2 18 is a guide wheel 50. When the carrier 16 is located on the track 3 9, in the travel direction of the carrier 16, the pushing portion 17 is the guide wheel 50, and the pushing portion 2 18 is an arc-shaped matching portion. Obviously, no matter where the carrier 16 is located on the track, it still maintains its travel direction. The pushing portion 17 is set on the front side and the pushing portion 2 18 is set on the rear side. That is to say, one of the pushing portion 17 and the pushing portion 2 18 is an arc-shaped matching portion, and the other is a guide wheel 50, so as to realize that the carrier 1B pushes the carrier 1A to move.

[0103] like Figure 3 , Figure 4 , Figure 6As shown, since the switching mechanism 11 and the switching structure 2 are swaying actions, in this embodiment, the connecting surface 19 between the track 2 8 and the track 1 7, as well as the connecting surface 19 between the track 2 8 and the track 3 9, are located on the swaying path of the switching mechanism 11; the connecting surface 19 between the track 4 10 and the track 1 7, as well as the connecting surface 19 between the track 4 10 and the track 3 9, are located on the swaying path of the switching mechanism 2 12. Taking the switching mechanism 11 as an example, when the switching mechanism 11 is in operation, its free end makes an arc under the driving action. At this time, the connecting surface 19 between the track 2 8 and the track 1 7, as well as the connecting surface 19 between the track 2 8 and the track 3 9, are both in the arc made by the free end of the switching mechanism 11, or are located on the outside of the arc. When they are located in the arc made by the free end of the switching mechanism 11, taking the track 1 7 and the track 2 8 as an example, the connecting surfaces 19 of the two coincide. That is to say, during the operation of the switching mechanism 11, the connecting surface 19 between the track 1 7 and the track 2 8 contacts and slides, and when the connecting surface 19 between the track 1 7 and the track 2 8 is located on the outside of the arc, it is equivalent to a small gap between the end face of the track 1 7 and the end face of the track 2 8, and the gap does not affect the sliding of the carrier 1 6 at this location.

[0104] like Figure 4 and Figure 7 As shown, in this embodiment, the driving mechanism 1 includes a toggle joint and a transmission member 20, and the toggle joint is driven by the transmission member 20 to reciprocate along the track 7, and the toggle joint pushes the warehouse body 1 to move along the track assembly. It should be noted that in this embodiment, the toggle joint pushes the carrier 6 to move along the track assembly so that the warehouse body 1 moves along the track assembly. The transmission member 20 can be a telescopic mechanism, or a screw mechanism, a linear module, etc. Further, the toggle joint includes a base 21 connected to the transmission member 20, and a toggle member 22; the toggle member 22 is movably connected and arranged on the base 21 to switch between the working position and the avoidance position. When the transmission member 20 drives the toggle joint to move forward, the toggle member 22 is in the working position to push the warehouse body 1 to move forward, and when the transmission member 20 drives the toggle joint to move reversely, the toggle member 22 switches to the avoidance position to avoid the warehouse body 1. In this embodiment, the transmission member 20 drives the toggle member to reciprocate along the track 7. Therefore, when the toggle member moves in the reverse direction along the preset path 1, it will come into contact with the carrier 1B, which will cause motion interference. Figure 7As shown, the toggle member 22 and the base 21 are hinged, that is, when the toggle member 22 and the carrier-B are in contact, the toggle member 22 rotates relative to the base 21 to avoid the carrier-B during the reverse movement, and after avoiding, it is reset by the reset member 23. In some embodiments, the reset is achieved by the gravity of the toggle member 22 itself. At this time, a stopper is configured on the base 21 to limit the movement of the toggle member 22. At this time, the movement avoidance of the carrier-B and the reset after avoiding are also achieved. Therefore, the switching method of the toggle member 22 between the working position and the avoidance position is simple and easy to achieve, which can well meet the driving requirements of the carrier-6. Further, the toggle member 22 and / or the warehouse body-1 are provided with an inclined surface avoidance portion, so that the toggle member 22 is driven to switch to the avoidance position through the inclined surface avoidance portion when the toggle member is reversed. Since the present embodiment carries the warehouse body-1 through the carrier-6, the inclined surface avoidance portion can be provided on the carrier-6. It is known that, since the purpose of setting the inclined surface avoidance portion is to avoid the reverse movement of the toggle member 22 and cause motion interference, the inclined surface avoidance portion can be set on the toggle member 22 and / or the carrier 1B. In this embodiment, Figure 8 As shown, the inclined surface avoidance portion includes an inclined surface 24 configured on the toggle member 22, and an inclined surface 25 configured on the carrier 1B. When the toggle member 22 and the carrier 1B are in contact, the inclined surface 24 slides along the inclined surface 25, so that the toggle member 22 swings relative to the base 21, thereby achieving avoidance through the inclined surface 25. The structure is simple and easy to implement.

[0105] It should be noted that, in some other embodiments, the track 7 is still configured as one of a curved track and a straight track or a combination of the two. At the same time, only one carrier 6 moves on the track 7. Therefore, when the carrier 6 moves on the track 7, there is no other carrier 6 in contact with it. At this time, the toggle joint drives the carrier 6 from the starting end of the track 7 to the end of the track 7, and then the toggle joint returns to the starting end of the track 7, thereby driving another carrier 6 to move. It should also be noted that in this embodiment, there is no need to set a slope avoidance portion.

[0106] like Fig.24As shown, in another embodiment, the driving mechanism 1 includes a transmission member 2 56, and the transmission member 2 56 is a conveyor chain or a conveyor belt. In the transmission member 2 56 and the carrier 1 6, one of them has a protrusion 57, and the other has a matching portion 58 connected with the protrusion 57. Compared with the above-mentioned embodiment, this embodiment does not need to drive the movement of the carrier 1 6A by the carrier 1 6B by pushing. That is to say, when the driving mechanism 1 includes the transmission member 2 56, each carrier 1 6 moves independently. Therefore, when the track assembly is triangular, it can avoid the sliding of the carrier 1 6 on the downward path (track 2 8) due to gravity, thereby avoiding the preset running error of the carrier 1 6, and also avoiding the collision of two adjacent carriers 1 6. It should be noted that the conveyor chain or the conveyor belt covers the path formed by the track 1 7, the track 2 8 when matched with the track 1 7, and the track 4 10 when matched with the track 1 7.

[0107] The protrusion 57 is arranged on the carrier 1 6, so that the matching portion 58 is configured as the gap between two adjacent chain links. That is to say, when the carrier 1 6 transitions from the track 4 10 to the track 1 7 and from the track 1 7 to the track 2 8, the protrusion 57 extends into the gap between the two adjacent chain links, thereby realizing the driving of the carrier 1 6 during the cyclic movement of the transmission component 2 56.

[0108] like Figure 1 As shown, in this embodiment, the heat sealing mechanism 2 performs heat sealing at the end of the vacuuming section 5. At this time, the combined chamber has been fully vacuumed, and the vacuuming operation can be maintained continuously during the heat sealing process, so that air pockets can be well avoided in the packaging bag. Specifically, Figures 9 to 13As shown, the heat sealing mechanism 2 is provided with a heat sealing knife 1 26 and a heat sealing knife 27. A reset spring 28 is provided between the heat sealing knife 1 26 and the bin body 1, and between the heat sealing knife 27 and the bin body 1. A push-pull mechanism 29 is provided at the end of the vacuum section 5 to drive the heat sealing knife 1 26 and the heat sealing knife 2 27 to move in opposite directions. The driving parts of the heat sealing knife 1 26 and the heat sealing knife 2 27 pass through the bin body 1, and the push-pull mechanism 29 drives the driving parts to move outside the bin body 1 to drive the heat sealing mechanism 2 to move. The push-pull mechanism 29 drives the heat sealing knife 1 26 and the heat sealing knife 2 27 to move toward each other, and move away from each other under the action of the reset spring 28 to achieve heat sealing of the packaging bag. Further, the driving part of the heat sealing knife 1 26 is configured as a driving part 1 30, and the driving part of the heat sealing knife 2 27 is configured as a driving part 2 31, and the driving part 1 30 and the driving part 2 31 extend to the same side of the outside of the warehouse body 1; the push-pull mechanism 29 includes a driving wheel 32 that can rotate around its own axis, and one side of the driving wheel 32 is provided with an actuating part 1 that cooperates with the driving part 1 30, and the other side is provided with an actuating part 2 that cooperates with the driving part 2 31; one of the actuating part 1 and the actuating part 2 is a cam 16 with a variable outer diameter, and the other is a cam 16 groove with a variable inner diameter, so as to drive the heat sealing knife 1 26 and the heat sealing knife 2 27 to move toward each other on the same side. Thus, the cam 16 realizes pushing, and the cam 16 groove realizes pulling, so as to realize driving the actuating part 1 and the actuating part 2 to move toward each other on the same side. The driving part 1 30 and the driving part 2 31 are rod-shaped structures, wherein the end of the driving part 1 30 is provided with a roller, and the driving part 2 31 has two parts, and the ends of the two driving parts 2 31 are connected by a connecting rod, and a roller is also provided in the middle of the connecting rod, so that the roller cooperates with the corresponding actuating part, and the heat sealing knife 1 26 and the heat sealing knife 2 27 can be driven more smoothly. The driving wheel 32 has a power source, usually a motor 35, and the motor 35 is operated to make the driving wheel 32 rotate around its own axis, so that the heat sealing knife 1 26 and the heat sealing knife 2 27 move toward each other. Usually, when the combined warehouse body reaches the end of the vacuuming section 5, the driving part 1 30 and the driving part 2 31 can cooperate with their respective actuating parts. At this time, the warehouse body 1 in the combined warehouse body is located on the track 4 10. After the mouth of the packaging bag is heat-sealed, the switching mechanism 2 12 is operated to separate the warehouse body 1 from the warehouse body 2 3, so that the clamping mechanism 4 releases the packaging bag to realize unloading.

[0109] In this embodiment, the actuating part 1 is configured as a cam groove surface 1 33, and the actuating part 2 is configured as a cam groove surface 2 34. Furthermore, a notch is provided on the outer periphery of the driving wheel 32, that is, the cam groove surface 1 33 has an entrance and exit for the driving part 1 30 to enter and exit therein, and the cam groove surface 2 34 also has an entrance and exit for the driving part 2 31 to enter and exit therein. In order to better meet the continuity and stability of the mechanism action and the avoidance of the upward and downward movement of the warehouse body 1, the actuating part 1 enters and exits the cam groove surface 1 33 from the notch, and the actuating part 2 also enters and exits the cam groove surface 1 33 from the notch. Specifically, as Fig.12 As shown, in this embodiment, the driving part 30 cooperates with the side wall of the cam groove surface 33, and the cam groove surface 33 is provided with an entrance part 36, a retaining part 37, and an exit part 38. The driving part 30 moves from the entrance part 36 to the exit part 38 through the retaining part 37, so that the heat sealing knife 26 moves from a position away from the heat sealing knife 27 to a position in contact with the heat sealing knife 27, and then moves away from the heat sealing knife 27. The driving part 30 has a certain relative movement path in the cam groove surface 33. When the driving part 30 moves in the entrance part 36, the cam groove surface 33 pulls the driving part 30 to move. At this time, the reset spring 28 stores energy, and the heat sealing knife 26 is pulled at the same time to move toward the heat sealing knife 27. When the driving part 30 is located at the holding part 37, the heat sealing knife 26 is in contact with the heat sealing knife 27. Since the holding part 37 has a certain arc length, the heat sealing knife 26 and the heat sealing knife 27 will remain in contact for a certain period of time. The driving wheel 32 continues to rotate, and the driving part 30 is located at the exit part 38. On the path of the driving part 30 from entering the exit part 38 to exiting the exit part 38, the distance from the side wall of the exit part 38 to the axis of the driving wheel 32 gradually increases. Therefore, the reset spring 28 releases the stored energy, so that the roller provided in the driving part 30 is still in contact with the side wall of the exit part 38, thereby realizing the stable movement of the heat sealing knife 26 away from the heat sealing knife 27.

[0110] like Fig.13As shown, the cam groove surface 34 is arranged on the side of the driving wheel 32, the driving portion 31 and the side wall of the cam groove surface 34 cooperate, the cam groove surface 34 includes an entrance groove 39 and an exit groove 40, the driving portion 31 enters the exit groove 40 from the entrance groove 39 through the outer wall of the driving wheel 32, and on the path of the driving portion 31 moving from the entrance groove 39 to the outer wall of the driving wheel 32, the distance between the axis of the driving portion 31 and the driving wheel 32 gradually increases, and the exit groove 40 has a transition section 41 that transitions from the outer wall of the driving wheel 32 to the side wall of the exit groove 40. After the driving part 2 31 enters the inlet groove 39, it is equivalent to the driving wheel 32 pushing the driving part 2 31 to move, so that the heat sealing knife 2 27 moves toward the heat sealing knife 1 26 at this time, and the reset spring 28 corresponding to the driving part 2 31 also stores energy. Then the driving wheel 32 continues to rotate, and the driving part 2 31 exits the inlet groove 39, is located on the side wall of the driving wheel 32, and rolls along the side wall of the driving wheel 32. Since the driving wheel 32 is a circular structure, this place is configured as the position where the heat sealing knife 2 27 fits and contacts the heat sealing knife 1 26, and maintains a certain continuous contact time through a certain arc length, thereby ensuring the heat sealing performance. Then, during the continuous rotation of the driving wheel 32, the driving part 2 31 enters the outlet groove 40 from the transition section 41, and the reset spring 28 corresponding to the driving part 2 31 releases the stored energy, that is, the heat sealing knife 2 27 is pushed away from the heat sealing knife 1 26, thereby completing the heat sealing of the packaging bag. Since the cam groove surface 34 is arranged on the side of the driving wheel 32, it is also convenient to set a base for the heat sealing mechanism 2, so that one end of the driving wheel 32 is connected to the active end of the power source, and the other end is rotatably connected to the base, thereby improving the supporting performance and thus improving the heat sealing performance.

[0111] like Figure 4 As shown, in this embodiment, it is necessary to power some parts on the circulating conveying mechanism, such as the switching mechanism 11, the switching mechanism 2 12, the clamping mechanism 4, the heat sealing mechanism 2, etc. In this embodiment, a sliding contact power supply component is provided between the warehouse body 1 and the track assembly, wherein a sliding contact line 42 is laid on the track assembly, and a brush that cooperates with the sliding contact line 42 is provided on the warehouse body 1. The sliding contact line 42 is arranged along the track assembly. Since the warehouse body 1 is carried by the carrier 6 in this embodiment, the brush is arranged on the carrier 6 in this embodiment, so that during the movement of the carrier 6, it can maintain electrical connection with the sliding contact line 42 by sliding contact, thereby ensuring power supply.

[0112] In this embodiment, the vacuum pumping mechanism is arranged at the parallel path section. In order to avoid collision during the vacuum pumping process, ensure the long-term stable operation of the vacuum pumping and ensure the vacuum pumping effect, such as Fig.14 , Fig.15As shown, the vacuum pumping mechanism in this embodiment includes an air distribution rail 52 and a matching piece 43. Specifically, the air distribution rail 52 is arranged along the vacuum pumping section 5. Further, a plurality of air holes 53 are arranged on the rail surface of the air distribution rail 52 along the path direction thereof at intervals. The air holes 53 are provided with valve components for controlling the on-off. The air distribution rail 52 is connected to a vacuum generating device (not shown in the figure), that is, the vacuum generating device is connected to the air holes 53 on the air distribution rail 52 to extract air through the air holes 53 to generate a negative pressure vacuum. The matching piece 43 is provided with a valve component for communicating with the air holes 53. Air duct, the fitting 43 is provided with a fitting surface 47 for fitting with the rail surface of the air distribution rail 52 to move along the air distribution rail 52, and the air inlet 48 of the air duct is provided on the fitting surface 47, and the fitting 43 is used to be connected with the warehouse body 2 3. Specifically, the air outlet 49 of the air duct on the fitting 43 is connected with the warehouse body 2 3, so that when the fitting 43 moves along the air distribution rail 52 until the air inlet 48 of the fitting 43 is connected with the air hole 53 of the air distribution rail 52, the warehouse body 2 3 is connected to the vacuum generating device through the air duct, and then the warehouse body 2 3 can perform the vacuum operation process. The vacuum pumping mechanism in this embodiment adopts a mobile vacuum pumping method. The fitting 43 moves along with the bin body 23. When the air passage of the fitting 43 is directly connected with the air hole 53, the vacuum actuator stops moving, the valve at the air hole 53 opens and performs the vacuum pumping operation. After a preset time, the valve at the air hole 53 closes, and the bin body 23 moves again. Due to the vacuum adsorption effect, the fitting 43 is tightly attached to the track surface of the gas distribution guide rail 52 through the fitting surface 47, and no problem occurs during the process of the fitting 43 moving along the gas distribution guide rail 52 to the next air hole 53. The vacuum is broken, that is, the current vacuum state will be maintained in the warehouse body 2 3 to move forward. When the warehouse body 2 3 moves to the air duct of the matching piece 43 and is directly connected to the next air hole 53, the valve at the next air hole 53 opens to perform the vacuum operation again after a preset time and then closes. This reciprocating process is used 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, meeting the application requirements of high vacuum. Furthermore, the air distribution rail 52 and the matching piece 43 can be matched in the up and down directions, that is, the rail surface of the air distribution rail 52 can be a horizontal plane, and the fitting surface 47 of the matching piece 43 is also a horizontal plane, so that the fitting surface 47 of the matching piece 43 and the rail surface of the air distribution rail 52 can fully fit to ensure the airtightness during vacuuming. In addition, the air distribution rail 52 and the matching piece 43 can be matched in the horizontal direction, that is, the rail surface of the air distribution rail 52 can be a vertical plane, and the fitting surface 47 of the matching piece 43 is also a vertical plane. Similarly, the fitting surface 47 of the matching piece 43 and the rail surface of the air distribution rail 52 can fully fit to ensure the airtightness during vacuuming.That is, in some embodiments, the air holes 53 of the air distribution rail 52 are located in a horizontal direction, and in other embodiments, the air holes 53 may also be located on the side of the air distribution rail 52 .

[0113] Further, such as Figure 15 to Figure 19 As shown, in order to make the fitting 43 enter and exit the gas distribution rail 52 more smoothly and avoid collision and impact that affect the operation of the equipment and cause damage to components, transition rails 54 are respectively connected to the entry and exit ends of the gas distribution rail 52. Specifically, there is a preset height difference one between the rail surface of the transition rail 54 and the rail surface of the gas distribution rail 52. The fitting 43 is provided with a guide wheel 50 for moving along the transition rail 54. The running surface formed by the guide wheel 50 (the running surface formed by the guide wheel 50 refers to the plane where the lowest point of the wheel rims of all guide wheels 50 is located) and the fitting surface 47 have a preset height difference two, and the preset height difference one is equal to the preset height difference two. The guide wheel 50 rolls, so that the fitting 43 can enter or exit the transition rail 54 more smoothly, which can effectively reduce or avoid impact and improve smoothness. When the fitting 43 drives onto the transition rail 54, the guide wheel 50 is in contact with the track surface of the transition rail 54, that is, the travel surface formed by the guide wheel 50 and the track surface of the transition rail 54 are in the same plane. At this time, the fitting surface 47 is exactly in the same height plane as the track surface of the gas distribution rail 52. Therefore, when the fitting 43 moves along the transition rail 54 to the gas distribution rail 52, the fitting surface 47 can accurately fit and contact with the track surface of the gas distribution rail 52 without any collision, so that the fitting 43 can drive onto the gas distribution rail 52 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 54 may be lower than the track surface of the valve guide rail 52, and correspondingly, the running surface formed by the guide wheel 50 is lower than the fitting surface 47; or the track surface of the transition rail 54 may be higher than the track surface of the valve guide rail 52, and correspondingly, the running surface formed by the guide wheel 50 is higher than the fitting surface 47. 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 43 more accurately and smoothly fit with the valve guide rail 52.

[0114] More specifically, Fig.15As shown, the transition rail 54 includes rails respectively arranged on both sides of the path direction of the gas distribution rail 52. When the matching piece 43 is on the transition rail 54, the guide wheel 50 moves along the rail. When the matching piece 43 is on the gas distribution rail 52, the guide wheel 50 is located on both sides of the path direction of the gas distribution rail 52. In other words, the guide wheels 50 are arranged on both sides of the moving direction of the matching piece 43, and the spacing between the guide wheels 50 on both sides of the matching piece 43 is greater than the track width of the gas distribution rail 52, so that when the matching piece 43 is on the gas distribution rail 52, the guide wheel 50 will not contact the gas distribution rail 52, ensuring that the fitting surface 47 can fully and effectively fit closely with the track surface of the gas distribution rail 52, 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 54 to avoid the fitting surface 47 of the fitting 43 , so that the fitting surface 47 of the fitting 43 can be more accurately fitted and contacted with the rail surface of the valve guide rail 52 when the fitting 43 enters the valve guide rail 52 .

[0115] Further, such as Fig.16 As shown, a guide slope 55 inclined to the rail surface of the transition rail 54 is also provided at the end of the transition rail 54. When the matching piece 43 drives onto the transition rail 54, the guide wheel 50 of the matching piece 43 first contacts the guide slope 55. The guide slope 55 is inclined at a small angle relative to the travel path of the guide wheel 50, and has a smooth transition. This makes it smoother for the matching piece 43 to enter the transition rail 54 and better avoid collision and impact.

[0116] The matching piece 43 is used to connect the movable warehouse body 2 3. The moving path of the warehouse body 2 3 is difficult to maintain high-precision parallelism with the path of the gas distribution rail 52. Therefore, during the movement of the warehouse body 2 3, the distance between the warehouse body 2 3 and the gas distribution rail 52 fluctuates. In order to ensure the reliability of vacuuming and avoid vacuum breaking due to the distance change, the matching piece 43 adopts a movable structure to flexibly adapt to the distance change between the warehouse body 2 3 and the gas distribution rail 52. Specifically, as Figure 20 to Figure 23As shown, the fitting 43 includes a base 44 and a movable part 45, the bottom surface of the base is provided with the fitting surface 47, a flexible tube 46 is connected between the base 44 and the movable part 45, a cavity is provided on the base 44 and the movable part 45 to communicate with the flexible tube 46 to form the air passage, the movable part 45 is connected to the warehouse body 23, the fitting surface 47 is provided with an air inlet 48 of the air passage, and the movable part 45 is provided with an air outlet 49 of the air passage to communicate with the warehouse body 23, so that the base 44 and the movable part 45 can move relative to each other through the flexible tube 46 to form an air path with a floating length, and the connectivity and external sealing of the air path are always guaranteed, so as to ensure that the warehouse body 23 can be reliably connected to the gas distribution guide rail 52 through the fitting 43 to form a stable air path during the movement, thereby ensuring the reliability of vacuum extraction. A plurality of ventilation outlets 49 of the ventilation channel may be provided on the movable portion 45 to increase the flow area and extract air at multiple points, which is conducive to more efficient vacuuming.

[0117] Furthermore, an elastic member 51 is provided between the base 44 and the movable part 45. Specifically, a plurality of elastic members 51 are provided. The elastic members 51 can be springs and are evenly spaced along the circumferential periphery of the flexible tube 46, so that the base 44 and the movable part 45 are elastically floating and can be elastically reset, flexibly adapting to the spacing change between the chamber body 23 and the gas distribution guide rail 52, and protecting the flexible tube 46 to avoid excessive force on the flexible tube 46 when the base 44 and the movable part 45 are relatively active, thereby ensuring the long-term stability of the flexible tube 46 and playing the role of an air path. In order to ensure sealing and connection stability, flanges are provided at both ends of the flexible tube 46, and the ends of the flexible tube 46 are respectively connected to the base 44 and the movable part 45 through flanges. Preferably, the flexible tube 46 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 45 is slidably matched with the base 44, and a guiding mechanism is provided between the movable part 45 and the base 44. Specifically, a protrusion is provided at the edge of the base 44, and a guide bar is provided on the movable part 45 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 45 and the base 44. The structure is simple and easy to implement, so that the relative movement between the movable part 45 and the base 44 can be more stable. In this embodiment, the flexible tube 46 is a short length of pipeline, and the relative sliding direction of the movable part 45 and the base 44 defined by the guiding mechanism is along the axial direction of the flexible tube 46, thereby avoiding the flexible tube 46 from being subjected to unnecessary lateral impact force, ensuring that the matching piece 43 can stably and reliably form an air path for vacuum extraction.

[0118] Furthermore, the fitting surface 47 is made of a smooth and wear-resistant material, such as polytetrafluoroethylene, polyurethane, etc., to ensure that the fitting surface 47 can be in full and close contact with the rail surface of the gas distribution rail 52, 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 47 is detachably connected to the base 44. The fitting surface 47 is a consumable part, and will be worn after sliding in contact with the gas distribution rail 52 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 47, and the fitting surface 47 is connected to the base 44 by screws, which ensures a tight and stable connection and is easy to replace.

[0119] Therefore, when using this embodiment, the clamping mechanism 4 is driven by the conveying mechanism 200 to move along with the warehouse body 23, and the matching piece 43 moves along with the warehouse body 23. When the matching piece 43 runs onto the air distribution rail 52 and the ventilation inlet 48 of the matching piece 43 is directly connected with the air hole 53 of the air distribution rail 52, the conveying mechanism 200 stops, the clamping mechanism 4 stops at the current position, and the valve of the air hole 53 is opened to vacuum the packaging bag through the warehouse body 23. After performing the vacuum operation for a preset time, the valve of the air hole 53 is closed, and the conveying mechanism 200 is used again to drive the warehouse body 23 to continue moving. When it moves to the point where the ventilation inlet 48 of the matching piece 43 is directly connected with the next air hole 53, the valve of the next air hole 53 is closed. Open it to evacuate the packaging bag through the warehouse body 2 3, and repeat this process to perform mobile vacuuming at multiple stations. The vacuuming time at each station is short, which can improve the overall processing efficiency. In the process of the clamping mechanism 4 moving from the position of the previous air hole 53 to the position of the next air hole 53, the fitting surface 47 of the matching part 43 is fully and tightly fitted on the track surface of the gas distribution guide rail 52. Due to the negative pressure adsorption effect, the track surface of the gas distribution guide rail 52 forms a blockage on the ventilation inlet 48 on the fitting surface 47, so that the warehouse body 2 3 and the packaging bag will maintain their current vacuum state and continue to evacuate when they reach the position of the next air hole 53, effectively ensuring the reliability of vacuuming.

[0120] More specifically, the present embodiment realizes vacuum packaging by the following method: conveying the warehouse body 1 equipped with the heat sealing mechanism 2 to the vacuum section 5 by the conveying mechanism 100, conveying the warehouse body 2 3 equipped with the clamping mechanism 4 to the vacuum section 5 by the conveying mechanism 200, the clamping mechanism 4 is used to fix the packaging bag, and the heat sealing mechanism 2 is used to heat-seal the mouth of the packaging bag; the warehouse body 1 and the warehouse body 2 3 are connected to form a combined warehouse body in the vacuum section 5; an exhaust channel is arranged along the vacuum section 5, and the warehouse body 2 3 is provided with an air duct connected to the exhaust channel, and the vacuum mechanism is used to exhaust the gas in the combined warehouse body through the exhaust channel and the air duct to form a vacuum space in the combined warehouse body; the combined warehouse body is driven by the conveying mechanism 200 to move along the vacuum section 5, and the air in the packaging bag is also exhausted during the movement of the packaging bag along the vacuum section 5, and the packaging bag moves to the end of the vacuum section 5, and the mouth of the packaging bag is heat-sealed by the heat sealing mechanism 2. The exhaust channel is configured as a plurality of spaced air holes 53 for vacuuming; during the movement of the combined chamber body along the vacuuming section 5, the vacuuming mechanism operates intermittently to perform vacuuming when the exhaust channel and the airway are connected.

[0121] It is known that when the matching piece 43 is arranged on the warehouse body 1, the warehouse body 1 is connected to the air duct, and the movable part 45 is also connected to the warehouse body 1 at this time, and the air outlet 49 of the air duct arranged on the movable part 45 is connected to the warehouse body 1, so as to meet the vacuum demand during the movement. Its use principle is consistent with the above, and it will not be repeated here. It should be noted that in this embodiment, the conveying mechanism 100 is not provided with a corresponding power source at the track 3 9, and the conveying mechanism 2 200 can be provided with a driving mechanism 3, and the driving mechanism 3 is a ring guide mechanism, a chain mechanism, a synchronous belt mechanism, etc., and its movement form is simple. Therefore, after the combined warehouse body is formed, due to the negative pressure, the driving mechanism 3 can be directly used to realize the driving of the combined warehouse body, and it can also avoid the relative movement of the warehouse body 1 and the warehouse body 2 3 to break the vacuum, so that the structure is compact, the setting is convenient, and it is easy to realize.

[0122] In addition, in some other embodiments, the vacuum pumping mechanism is arranged between track 1 7 and track 3 9. Fig.25 and Fig.26As shown (the bin body 2 3 is not shown), the vacuum pumping mechanism includes an air slip ring assembly, and the air slip ring of the air slip ring assembly is provided with a plurality of flexible tubes 2 along the rotation circumference, and the flexible tubes 2 are respectively connected to the bin body 1. Specifically, the vacuum pumping mechanism includes a stator part 59 and an air slip ring 60; the air slip ring 60 and the stator part 59 are rotationally matched, and the air path on the air slip ring 60 and the air path on the stator part 59 are kept in communication when the two rotate relative to each other, and the air slip ring 60 is provided with a plurality of flexible tubes 2 61, and the flexible tubes 2 61 are in communication with the bin body 1. Further, the bin body 1 is provided with a first wheel group 62 and a second wheel group 63 arranged up and down, the first wheel group 62 and the track 1 7 are slidably matched, and the second wheel group 63 and the track 2 8, the track 3 9, and the track 4 10 are matched; the end of the flexible tube 2 61 away from the air slip ring 60 is connected between the first wheel group 62 and the second wheel group 63. 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, thereby effectively improving the compactness of the structure on the basis of configuring an appropriate assembly position for the flexible tube 2 61. The warehouse body 1 performs a circular motion along the track assembly, so that during the movement of the warehouse body 1, the driving gas slip ring 60 rotates synchronously to prevent the flexible tube 2 61 from being entangled. Furthermore, a rotating joint can be provided at the port of the flexible tube 2 61 to better prevent the flexible tube 2 61 from falling off or leaking due to entanglement. It is known that usually only the first wheel group 62 or the second wheel group 63 is provided on the warehouse body 1. Although the volume of the warehouse body 1 can be reduced accordingly, the assembly position of the flexible tube 61 will be lost, and the flexible tube 61 can only be assembled on the side of the warehouse body 1 (the end face in this embodiment). At this time, there will be an obvious bending area between the warehouse body 1 and the flexible tube 61, so the flexible tube 61 is prone to leak, which is not conducive to the vacuum operation. If the stator part 59 and the air slip ring 60 are adjusted to eliminate the above-mentioned bending area, in order to ensure that the flexible tube 61 has an appropriate length to meet the timely vacuuming, when the warehouse body 1 is located on the track 7, the flexible tube 61 will also form a bending area due to its own gravity. If the relative position of the stator part 59 and the air slip ring 60 relative to the track 7 is further increased, the volume of the equipment will be further expanded, which is not conducive to the purpose of compactness. Similarly, if Fig. 27 As shown in FIG. 1 , when the annular conveying path is triangular, vacuuming can also be performed by using a gas separation structure, which will not be described in detail here. Fig.28 and Fig.29, the vacuum pumping mechanism includes a one-way valve 64 arranged on the bin body 1 or the bin body 2 3, 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 64 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 64. The one-way valve 64 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.

[0123] 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 device, characterized in that: include: A conveying mechanism 1, wherein 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, and the bin body 1 is provided with a heat sealing mechanism for heat-sealing the mouth of the packaging bag; 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 bin body 1 and the bin body 2 are butted together in the parallel path segments to form a closed combined bin body; 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 device according to 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 track is provided with a driving mechanism to drive the warehouse body arranged on the track assembly to move forward; The parallel path segment of the conveying mechanism 1 includes track 3, track 2 at position 2, and track 4 at position 4; The track is provided with a second driving mechanism at the third position and / or the conveying mechanism is provided with a third driving mechanism to drive the combined warehouse body to move along the parallel path segment.

3. A packaging device according to claim 2, 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 to switch between position 1 and position 2, and the switching mechanism 2 drives the track 4 to swing to switch between position 3 and position 4; The middle section of the track 1 is an arc-shaped path section, and the track 1 is provided with straight path sections at both ends of the arc-shaped path section, and each of the two straight path sections has a driving mechanism 1.

4. A packaging device as claimed in claim 3, characterized in that: The connecting surface between the track 2 and the track 1, and the connecting surface between the track 2 and the track 3, are located on the deflection path of the switching mechanism 1; The connecting surface between the track four and the track one, and the connecting surface between the track four and the track three, are located on the deflection path of the switching mechanism two.

5. A packaging device according to claim 2, 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; wherein the toggle assembly includes: A base drivingly connected to the first driving member; and A toggle member, the toggle member is movably connected and arranged on the base to switch between a working position and an avoidance position. When the transmission member 1 drives the toggle member to move forward, the toggle member is in the working position to push the bin body to move forward. When the transmission member 1 drives the toggle member to move backward, the toggle member switches to the avoidance position to avoid the bin body 1. Alternatively, the driving mechanism 1 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 device according to claim 5, characterized in that: The toggle member and / or the bin body are provided with an inclined surface avoidance portion, so that when the toggle member is reversed, the toggle member is driven to switch to the avoidance position through the inclined surface avoidance portion.

7. A packaging device according to claim 1, characterized in that: The heat sealing mechanism is provided with a heat sealing knife 1 and a heat sealing knife 2, and a return spring is provided between the heat sealing knife 1 and the bin body 1, and between the heat sealing knife 2 and the bin body 1; A push-pull mechanism is provided at the end of the parallel path section for driving the heat sealing knife 1 and the heat sealing knife 2 to move in opposite directions; The driving parts of the heat sealing knife 1 and the heat sealing knife 2 pass through the bin body 1, and the push-pull mechanism drives the driving parts to move outside the bin body 1 to drive the heat sealing mechanism to operate.

8. A packaging device according to claim 7, characterized in that: The driving part of the heat sealing knife 1 is configured as driving part 1, and the driving part of the heat sealing knife 2 is configured as driving part 2, and the driving part 1 and the driving part 2 extend to the same side of the exterior of the warehouse body 1; The push-pull mechanism comprises a driving wheel that can rotate around its own axis, one side of the driving wheel is provided with an actuating part 1 that cooperates with the driving part 1, and the other side is provided with an actuating part 2 that cooperates with the driving part 2; One of the actuating part 1 and the actuating part 2 is a cam with a changing outer diameter, and the other is a cam groove with a changing inner diameter, so as to drive the heat sealing knife 1 and the heat sealing knife 2 to move toward each other on the same side.

9. A packaging device according to claim 8, characterized in that: A notch is also provided on the outer circumference of the driving wheel.

10. A packaging device according to claim 1, characterized in that: The track assembly has multiple bin bodies 1, and the bin body 1 is provided with a pushing portion 1 on the front side of its moving direction, and a pushing portion 2 is provided on the rear side of its moving direction. At least one of the bin bodies 1 is driven to move forward by a conveying mechanism 1, and adjacent bin bodies 1 are pushed forward in sequence by the contact between the pushing portion 2 and the pushing portion 1.

11. A packaging device according to claim 1, characterized in that: A sliding contact power supply component is arranged between the first bin body and the track assembly, wherein a sliding contact line is laid on the track assembly, and a brush cooperating with the sliding contact line is arranged on the first bin body.

12. A packaging device according to any one of claims 1 to 11, characterized in that: The vacuum pumping 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; and 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.

13. A packaging device according to claim 12, characterized in that: The matching piece comprises: A base, the bottom surface of which is provided with the fitting surface; and The movable part is connected with a flexible tube 1 between the movable part and the base, the movable part and the base are provided with cavities to communicate with the flexible tube 1 to form the ventilation channel, the movable part is connected with the warehouse body 1 or the warehouse body 2, and the ventilation outlet of the ventilation channel is provided on the movable part to communicate with the warehouse body 1 or the warehouse body 2.

Images