Vacuum sealing machine and vacuum sealing method

Abstract

The present application relates to the technical field of household packaging, and in particular to a vacuum sealing machine and a vacuum sealing method, which includes a base, a supporting member, a pressing member, a lifting and lowering driving mechanism for driving the pressing member to lift and lower, a vacuum extraction member and a sealing heating member; the supporting member is provided with a first slot body and a sealing supporting portion, and the first slot body and the sealing supporting portion are arranged at intervals along the direction of placing the packaging bag; the pressing member is provided with a second slot body aligned with the first slot body, and the pressing member is provided with a sealing pressing portion aligned with the sealing supporting portion; when the supporting member and the pressing member are fitted, the first slot body and the second slot body are buckled to form a vacuum extraction chamber, and the sealing supporting portion and the sealing pressing portion cooperate to clamp the packaging bag; the vacuum extraction member is connected to the vacuum extraction chamber; and the sealing heating member is arranged on the sealing supporting portion or the sealing pressing portion. The present application can maintain the good sealing and complete thermoplastic sealing effect of the vacuum extraction chamber after frequent use, so as to form a good vacuum sealing effect on the packaging bag.

Description

Technical Field

[0001] The present application relates to the technical field of household packaging, and in particular to a vacuum sealing machine and a vacuum sealing method. Background Art

[0002] A vacuum sealer is a device used to evacuate and seal food bags. By vacuum packaging food, it can effectively reduce food oxidation, weight loss and taste loss, and can also reduce the possibility of secondary contamination of food in the packaging bag, thereby effectively increasing the shelf life of the food.

[0003] Household vacuum sealers on the market usually have an overall structure of two halves that are hinged together, and when the whole is buckled together, a vacuum extraction chamber can be formed. At the same time, the buckled vacuum sealer is locked in a manner similar to a lock. During actual use, the vacuum sealer is opened, and the bag opening of the packaging bag is placed in a position to form a vacuum extraction chamber. The vacuum sealer is then closed and locked with the lock to clamp the bag opening. The air in the bag is extracted through a vacuum device. When a predetermined vacuum degree is reached, thermoplastic sealing is performed.

[0004] Among them, the airtightness of the vacuum extraction chamber and the integrity of the thermoplastic seal will be greatly affected by the fastening tightness of the vacuum sealer. In the above-mentioned related technologies, both the hinged cover and the lock-type locking in the vacuum sealer require manual operation, which is easy to reduce the fastening tightness of the vacuum sealer due to structural wear after frequent use, which will reduce the final effect of the vacuum seal. Summary of the invention

[0005] In a first aspect, in order to maintain a good airtightness of the vacuum extraction chamber and a complete thermoplastic sealing effect after frequent use, so as to form a good vacuum sealing effect on the packaging bag, the present application provides a vacuum sealing machine.

[0006] The vacuum sealing machine provided in this application adopts the following technical solution:

[0007] A vacuum sealing machine, comprising:

[0008] Base;

[0009] A supporting member is arranged on the base; the supporting member is provided with a first groove body and a sealing supporting portion, and the first groove body and the sealing supporting portion are arranged at intervals along the placing direction of the packaging bag;

[0010] The pressing member is located above the supporting member and can be lifted and lowered relative to the base; the pressing member is provided with a second groove body aligned with the first groove body, and the pressing member is provided with a sealing pressing portion aligned with the sealing supporting portion; when the supporting member and the pressing member are fitted together, the first groove body and the second groove body are buckled together to form a vacuum extraction cavity, and the sealing supporting portion and the sealing pressing portion cooperate to clamp the packaging bag; an elastic sealing ring capable of surrounding the vacuum extraction cavity is provided at the fitting surfaces of the supporting member and the pressing member;

[0011] A lifting drive mechanism, used for driving the pressing member to lift and lower;

[0012] A vacuum extraction member connected to the vacuum extraction chamber;

[0013] The sealing heating element is arranged on the sealing supporting part or the sealing pressing part.

[0014] By adopting the above technical solution, the pressing member can be lifted and lowered relative to the supporting member under the driving action of the lifting drive mechanism. When the pressing member and the supporting member are in contact, the first groove body and the second groove body are buckled to form a vacuum extraction chamber, and the sealing supporting part and the sealing pressing part cooperate to clamp the packaging bag; at the same time, the elastic sealing ring is arranged around the vacuum extraction chamber, which not only plays a good sealing role for the vacuum extraction chamber, but also can effectively buffer the rigid collision when the pressing member is close to the contact supporting member. Then, the vacuum extraction member extracts gas and the sealing heating member performs heat sealing in turn, so as to complete the vacuum sealing action of the packaging bag. In actual operation, the pressing part is automatically driven. Compared with manual operation, the movement stroke of the pressing part can be controlled, which can effectively avoid the situation where the parts move excessively and wear the connecting structure; when the pressing part and the supporting part are fitted together, compared with the use of a lock for locking, the method of using a lifting drive mechanism to maintain the fitting state of the two is more stable and reliable, which can reduce the situation where the vacuum extraction chamber is not sealed enough due to insufficient fitting and the thermoplastic seal has poor sealing in some areas. In addition, compared with the hinged buckle in the related art, the lifting buckle in this scheme can make the elastic sealing ring at the fitting surface of the supporting part and the pressing part more evenly stressed, and reduce the situation where the elastic sealing ring is unevenly stressed and deformed to varying degrees, thereby reducing the sealing degree of the vacuum extraction chamber. Finally, the good sealing of the vacuum extraction chamber and the complete thermoplastic sealing effect are maintained after frequent use, so as to form a good vacuum sealing effect for the packaging bag.

[0015] Optionally, the lifting drive mechanism includes an end drive assembly and a linkage assembly, wherein the end drive assembly is located at one end of the pressure piece and is used to drive the end of the pressure piece to lift and lower, and the linkage assembly is used to transmit power from one end of the pressure piece to the other end to achieve synchronous lifting of both ends.

[0016] By adopting the above technical solution, the end drive component is set at one end, and a linkage component is used to realize the synchronous lifting and lowering of the two ends of the pressure piece, which can improve the compactness of the overall structure of the vacuum sealer, so that the vacuum sealer is more suitable for home use.

[0017] Optionally, the end drive assembly includes a cam, a drive motor for driving the cam to rotate, and a drive frame for cooperating with the cam, the drive motor is fixed to the base, the drive frame is fixed to one end of the pressure piece, and the drive frame is provided with an abutment groove for accommodating the cam, and the groove wall of the abutment groove is used for abutting the outer wall of the cam.

[0018] By adopting the above technical solution, the purpose of driving the driving pressure member to rise and fall is achieved by cooperating with the cam and the driving frame, and by setting the size of the abutment groove in the cam and the driving frame, the driving motor only needs to rotate in one direction during the reciprocating lifting and lowering process of the pressure member.

[0019] Optionally, the linkage assembly includes a first connecting rod and a second connecting rod, the middle parts of the first connecting rod and the second connecting rod are connected to the base rotating shaft, the end of the first connecting rod close to the second connecting rod is provided with a sliding groove extending along its own length direction, and the end of the second connecting rod is provided with a sliding rod capable of sliding and rotating in the sliding groove; the ends of the first connecting rod opposite to the second connecting rod are provided with a movable groove extending along their own length direction, and both ends of the pressure member are provided with movable rods capable of sliding and rotating in the movable groove.

[0020] By adopting the above technical solution, the first connecting rod and the second connecting rod can realize the synchronous lifting and lowering of the two ends of the pressing member, and the structure is simple and practical.

[0021] Optionally, the vacuum sealing machine further comprises a shell, wherein the base, the supporting member and the pressing member are all located in the shell, a feeding port is provided on one side of the shell, and the position of the feeding port is adapted to the fitting surface of the supporting member and the pressing member; the sealing supporting member and the sealing pressing member are both located between the feeding port and the vacuum extraction chamber;

[0022] The base is provided with a receiving groove for receiving the supporting member, and the receiving groove is open on one side close to the material inlet; the shell is provided with a draw-out opening on one side of the material inlet, which is connected with the material inlet and is used for the supporting member to enter and exit, and the supporting member is provided with a force-applying portion on one side close to the draw-out opening;

[0023] The sealing heating component is arranged on the sealing pressing part, and the vacuum extraction component is connected with the pressing component.

[0024] By adopting the above technical scheme, the base, the supporting member and the pressure member are covered by the shell, which can play a role in dust protection for the internal parts; and during the vacuuming process of some fresh foods, moisture is likely to remain in the first groove of the supporting member. This scheme can apply force to the supporting member through the force-applying part to pull the supporting member away from the pull-out port, thereby facilitating the removal of residual moisture in the supporting member and effectively reducing the growth of bacteria due to residual moisture.

[0025] Optionally, the sealing supporting portion is an elastic supporting strip, and the elastic supporting strip protrudes from the upper surface of the supporting member; the sealing pressing portion is provided with a matching groove for the elastic supporting strip to extend into, and the groove depth of the matching groove is less than the height of the elastic supporting strip protruding from the upper surface of the supporting member in a natural state; the sealing pressing portion is provided with a mounting groove for accommodating a sealing heating member on the side facing away from the sealing supporting portion.

[0026] By adopting the above technical solution, when the sealing pressure portion cooperates with the elastic support strip to clamp the packaging bag, the packaging bag itself can be bent in multiple sections, which is convenient for tightening the packaging bag to be heated and sealed, and reduces the shrinkage and stacking of the packaging bag during the vacuum extraction process, thereby reducing the situation in which the thermoplastic sealing effect is affected.

[0027] Optionally, the supporting member is provided with a strip groove for embedding the elastic supporting strip, the elastic supporting strip is provided with a heat-insulating groove, and the supporting member on the side of the elastic supporting strip away from the first groove body is provided with a heat-resistant groove.

[0028] By adopting the above technical solution, the strip groove is provided for the elastic supporting strip to be embedded therein, and the heat insulating groove, the strip groove and the heat blocking groove can all play a role in blocking the transfer of heat, thereby reducing the situation in which the heat quickly dissipates and affects the thermoplastic sealing effect.

[0029] Optionally, the shell includes a first half shell, a second half shell and an end cover; the first half shell and the second half shell are buckled together to form a shell body; there are two end covers, and the two end covers are respectively used to be sleeved on two ends of the shell body.

[0030] By adopting the above technical solution, the assembly and disassembly of the vacuum sealer are relatively convenient, and it is convenient for individuals to disassemble and assemble to clean the inside or to troubleshoot faults.

[0031] Optionally, the vacuum sealer further comprises a storage battery connected to the base, wherein the storage battery is electrically connected to the vacuum extraction component and the sealing heating component respectively.

[0032] By adopting the above technical solution and using a battery-powered mode, the vacuum sealer does not need to be restricted to the accessories of the socket during use, making it more convenient to use in the home.

[0033] In a second aspect, the present application provides a vacuum sealing method.

[0034] A vacuum sealing method provided in this application adopts the following technical solution:

[0035] A vacuum sealing method, applied to the above-mentioned vacuum sealing machine, comprises the following steps:

[0036] S1, loading, inserting the mouth of the packaging bag into the vacuum sealer from the feeding port so that the mouth of the packaging bag is between the first trough body and the second trough body;

[0037] S2, pressing downward to drive the pressing member to move downward and press onto the supporting member; wherein the first groove body and the second groove body form a vacuum extraction chamber covering the mouth of the packaging bag, and the sealing pressing member cooperates with the sealing supporting member to clamp the packaging bag;

[0038] S3, evacuating the air by applying negative pressure to the vacuum extraction chamber to extract the air in the packaging bag through the opening of the packaging bag;

[0039] S4, heat sealing, heating and sealing the packaging bag clamped by the sealing pressing member and the sealing supporting member;

[0040] S5, lifting the material out, driving the pressing member to move upward and separate from the supporting member, and taking the mouth of the packaging bag out of the vacuum sealing machine.

[0041] By adopting the above technical solution, a good vacuum sealing effect of the packaging bag can be achieved conveniently and quickly.

[0042] In summary, the present application includes at least one of the following beneficial technical effects:

[0043] 1. Maintain the good sealing effect of the vacuum extraction cavity and the complete thermoplastic sealing effect after frequent use to form a good vacuum sealing effect on the packaging bag;

[0044] 2. The overall structure of the vacuum sealer is compact, and it does not need to be restricted to the accessories of the socket during use, making the vacuum sealer more convenient to use in the home;

[0045] 3. The force applying part can be used to apply force to the supporting member so as to remove the supporting member from the drawer opening, thereby facilitating the removal of residual water in the supporting member;

[0046] 4. It is convenient to tighten the packaging bags to be heated and sealed, and reduce the shrinkage and stacking of the packaging bags during the vacuum extraction process, which affects the thermoplastic sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 is an overall schematic diagram of a vacuum sealer in an embodiment of the present application;

[0048] Figure 2 is a schematic diagram of the result of hiding the second half shell by the vacuum sealer in the embodiment of the present application;

[0049] Figure 3 It is a cross-sectional view used to show the matching structure of the supporting member and the pressing member in the embodiment of the present application;

[0050] Figure 4 is an exploded schematic diagram of the base, the supporting member, the elastic supporting strip and the first sealing belt in the embodiment of the present application;

[0051] Figure 5 is a cross-sectional view used to illustrate the drive assembly in an embodiment of the present application;

[0052] Figure 6 is a schematic diagram for illustrating a driving structure in an embodiment of the present application;

[0053] Figure 7 yes Figure 5 Enlarged schematic diagram of part A.

[0054] Explanation of reference numerals: 1. Supporting member; 11. First slot body; 12. Elastic supporting strip; 121. Heat-insulating slot; 13. First sealing strip; 14. Strip slot; 15. Heat-resisting slot; 16. Force-applying portion; 17. Rounded corner; 2. Pressing member; 21. Second slot body; 22. Sealing pressing portion; 221. Matching slot; 222. Mounting slot; 23. Second sealing strip; 24. Connecting pipe; 3. End driving assembly; 31. Cam; 32. Driving motor Machine; 33, driving frame; 331, abutment groove; 4, linkage assembly; 41, first connecting rod; 411, slide groove; 42, second connecting rod; 421, slide rod; 43, rotating shaft; 44, movable groove; 45, movable rod; 5, vacuum extraction chamber; 6, shell; 61, first half shell; 62, second half shell; 63, end cover; 64, feeding port; 65, pulling port; 7, vacuum extraction member; 8, battery; 9, base; 91, accommodating groove. DETAILED DESCRIPTION

[0055] The present application is further described in detail below in conjunction with the accompanying drawings.

[0056] The present application embodiment discloses a vacuum sealer. Figure 1 and Figure 2 A vacuum sealer includes a shell 6, a base 9, a supporting member 1, a pressing member 2, a vacuum extraction member 7, a sealing heating member and a lifting drive mechanism. In this embodiment, the shell 6 includes a first half shell 61, a second half shell 62 and end covers 63 at both ends, wherein the first half shell 61 and the second half shell 62 are buckled together to form a shell body, and there are two end covers 63, which are respectively used to be sleeved on the two ends of the shell 6, and the end covers 63 and the shell 6 are fixedly connected by bolts. In addition, in order to facilitate the overall stable placement, the edges of the lower sides of the two end covers 63 are formed with two symmetrically arranged support blocks.

[0057] Reference Figure 2 and Figure 3 The base 9, the supporting member 1, the pressing member 2, the vacuum extraction member 7, the sealing heating member and the lifting drive mechanism are all wrapped in the shell 6, wherein the supporting member 1 is installed on the base 9, the pressing member 2 is directly above the supporting member 1 and can be lifted and lowered relative to the supporting member 1; the lifting drive mechanism is used to drive the pressing member 2 to rise and fall, so that the pressing member 2 can move down and fit with the supporting member 1, or move up and separate from the supporting member 1.

[0058] Reference Figure 1 and Figure 3 The buckling surfaces of the first half shell 61 and the second half shell 62 are adapted to the fitting surfaces of the supporting member 1 and the pressing member 2, and a feeding port 64 is provided at the buckling surfaces of the first half shell 61 and the second half shell 62 for allowing the mouth of the packaging bag to extend into between the pressing member 2 and the supporting member 1.

[0059] In addition, combined Figure 4 In the present embodiment, the supporting member 1 and the base 9 are in a pull-out fit so that the supporting member 1 can be pulled out for better cleaning; specifically, a receiving groove 91 for receiving the supporting member 1 is provided on the base 9, and the receiving groove 91 is open on one side close to the feed inlet 64 for the supporting member 1 to be detached from or inserted into; and the receiving groove 91 and the supporting member 1 as a whole are in an interference fit so that the supporting member 1 can be stably in the receiving groove 91; at the same time, a rounded corner 17 is provided on the end edge of the supporting member 1 inserted into the receiving groove 91 so that the supporting member 1 can be inserted into the receiving groove 91.

[0060] Correspondingly, a side of the housing 6 where the material inlet 64 is provided is provided with a draw-out opening 65 which is in communication with the material inlet 64 and through which the supporting member 1 can enter and exit; and, in order to facilitate the support member 1 to be drawn out from the receiving groove 91, a force-applying portion 16 is formed on one side of the support member 1 near the draw-out opening 65. In this embodiment, the force-applying portion 16 is a force-applying sheet extending downward from the support member 1, and a groove for a hand to be placed is formed between the force-applying sheet and the support member 1.

[0061] Reference Figure 3 The supporting member 1 is provided with a first groove body 11 and a sealing supporting part, the first groove body 11 and the sealing supporting part are arranged at intervals along the direction of placing the packaging bag, and the sealing supporting part is located on the side of the first groove body 11 close to the feeding port 64; correspondingly, the pressing member 2 is provided with a second groove body 21 aligned with the first groove body 11, and a sealing pressing part 22 aligned with the sealing supporting part. When the pressing member 2 moves down and fits on the upper surface of the supporting member 1, the first groove body 11 and the second groove body 21 are buckled to form a vacuum extraction chamber 5, and the sealing supporting part and the sealing pressing part 22 cooperate to clamp the packaging bag.

[0062] At the same time, the upper surface of the supporting member 1 is also embedded with a first sealing belt 13 surrounding the opening of the first groove body 11, and correspondingly, the lower surface of the pressing member 2 is embedded with a second sealing belt 23 surrounding the opening of the second groove body 21. The position of the first sealing belt 13 and the position of the second sealing belt 23 are aligned up and down, and at least one of them is arranged in a convex shape; when the pressing member 2 moves downward and fits with the supporting member 1, the first sealing belt 13 and the second sealing belt 23 are tightly pressed to form an elastic sealing ring surrounding the vacuum extraction chamber 5, which is used to improve the sealing performance of the vacuum extraction chamber 5.

[0063] Reference Figure 3 and Figure 4 The sealing support portion is an elastic support strip 12, which protrudes from the upper surface of the support member 1; accordingly, a matching groove 221 is provided on the lower surface of the sealing pressing portion 22 for the elastic support strip 12 to extend into, and the groove depth of the matching groove 221 is less than the height of the elastic support strip 12 protruding from the upper surface of the support member 1 in the natural state; therefore, when the sealing pressing portion 22 cooperates with the elastic support strip 12 to clamp the packaging bag, the packaging bag itself can be bent in multiple sections, which is convenient for tightening the packaging bag to be heated and sealed.

[0064] In addition, a mounting groove 222 for accommodating a sealing heating element is provided on the side of the sealing pressing portion 22 away from the sealing supporting portion, so as to allow the sealing heating element to be installed; and when the sealing supporting portion and the sealing abutting portion clamp the packaging bag, the sealing heating element can be used to perform thermoplastic sealing on the packaging belt clamped by the sealing supporting portion and the sealing abutting portion. In this embodiment, the sealing heating element is an electric heating wire.

[0065] Reference Figure 3 and Figure 4 In the process of heating by the sealing heating element, the heat will also be dissipated to the outside through the elastic support strip 12 to a certain extent. If the heat is dissipated too quickly, the effect of the thermoplastic sealing will be affected. Accordingly, in this solution, a strip groove 14 for the elastic support strip 12 to be embedded is provided on the support member 1, and a heat insulation groove 121 is provided on the lower side of the strip groove 14 where the elastic support strip 12 is embedded. The heat insulation groove 121 cooperates with the strip groove 14 to form a cavity that plays a heat insulation role. In addition, the support member 1 on the side of the elastic support strip 12 away from the first groove body 11 is also provided with a heat blocking groove 15, which can also play a blocking role in the transfer of heat to a certain extent, slowing down the speed of heat expansion on the support member 1 to maintain a good thermoplastic sealing effect.

[0066] Reference Figure 5The lifting drive mechanism is used to drive the pressure member 2 to rise and fall relative to the supporting member 1. Specifically, the lifting drive mechanism includes an end drive component 3 and a linkage component 4, wherein the end drive component 3 is located on one side of the pressure member 2 and is used to drive one end of the pressure member 2 to rise and fall; correspondingly, the linkage component 4 is used to synchronously transmit power to the other end of the pressure member 2 so that the two ends of the pressure member 2 can be lifted and lowered synchronously.

[0067] Specifically, refer to Figure 5 and Figure 6 The end driving assembly 3 includes a cam 31, a driving motor 32 for driving the cam 31 to rotate, and a driving frame 33 for cooperating with the cam 31; wherein the driving motor 32 is fixedly connected to the supporting member 1, and the cam 31 is mounted on the output shaft of the driving motor 32; at the same time, the driving frame 33 is integrally formed with one end of the pressing member 2, and an abutting groove 331 for accommodating the cam 31 is provided on the driving frame 33, and the groove wall of the abutting groove 331 is used for the outer wall of the cam 31 to abut against. Therefore, under the driving action of the driving motor 32, through the rotation of the cam 31, the driving frame 33 can drive the supporting member 1 to move.

[0068] Reference Figure 6 and Figure 7 The linkage assembly 4 includes a first link 41 and a second link 42 located at the lower side of the pressing member 2. The middle of the first link 41 and the second link 42 are both provided with shaft holes, and a rotation shaft 43 rotatably connected to the supporting member 1 is passed through the shaft hole, so as to realize the rotation connection between the first link 41 and the supporting member 1, and between the second link 42 and the supporting member 1. At the same time, the end of the first link 41 close to the second link 42 is provided with a slide groove 411 extending along its length direction, and correspondingly, the end of the second link 42 is provided with a slide bar 421 that can slide and rotate in the slide groove 411; and the center distance between the rotation axis 43 line in the middle of the first link 41 and the second link 42 and the rotation axis 43 line of the slide bar 421 is equal.

[0069] Reference Figure 6 The ends of the first connecting rod 41 and the second connecting rod 42 that are separated from each other are both provided with movable grooves 44 extending along their length direction, and movable rods 45 are inserted in the two movable grooves 44, and the movable rods 45 can slide and rotate relative to the movable grooves 44, and the two movable rods 45 are respectively fixedly connected to the two ends of the pressing member 2. At the same time, the sliding rod 421 and the movable rod 45 are both round rods, so that the sliding rod 421 and the movable rod 45 can rotate in the sliding groove 411 and the movable groove 44 accordingly; in addition, the ends of the two movable grooves 44 that are separated from each other are both provided with openings, and the openings of the movable grooves 44 can allow the movable rods 45 to be separated from or inserted into, so as to facilitate the installation and removal of the first connecting rod 41 and the second connecting rod 42.

[0070] At the same time, combined Figure 2, the vacuum extraction member 7 is installed at the end of the supporting member 1 away from the driving motor 32, and the vacuum extraction member 7 is connected to the second slot body 21 of the pressing member 2 through a hose, so that the vacuum extraction member 7 can evacuate the vacuum extraction chamber 5; specifically, a connecting pipe 24 connected to the second slot body 21 is provided on the upper side of the pressing member 2, and the air inlet end of the vacuum extraction member 7 is connected to the connecting pipe 24 through a hose. In this embodiment, the vacuum extraction member 7 is an electric vacuum pump. In addition, in order to make the vacuum sealer more convenient to use at home, the vacuum sealer also includes a battery 8 connected to the base 9, and the battery 8 is electrically connected to the vacuum extraction member 7 and the sealing heating member respectively; by adopting the battery 8 power supply method, the vacuum sealer does not need to be limited to the accessories of the socket during use.

[0071] The implementation principle of a vacuum sealer in the embodiment of the present application is:

[0072] The pressing member 2 can be lifted and lowered relative to the supporting member 1 under the driving action of the lifting drive mechanism. When the pressing member 2 is in contact with the supporting member 1, the first groove body 11 and the second groove body 21 are buckled to form a vacuum extraction chamber 5, and the sealing supporting part and the sealing pressing part 22 cooperate to clamp the packaging bag.

[0073] At the same time, the elastic sealing ring is arranged around the vacuum extraction chamber 5 , which not only can effectively seal the vacuum extraction chamber 5 , but also can effectively buffer the rigid collision when the pressing member 2 is close to the supporting member 1 .

[0074] Then, the vacuum extraction component 7 extracts gas and the sealing heating component performs heat sealing in sequence, thereby completing the vacuum sealing of the packaging bag.

[0075] During actual operation, the pressing member 2 is automatically driven. Compared with manual operation, the moving stroke of the pressing member 2 can be controlled, which can effectively avoid excessive movement of parts and wear of the connecting structure. When the pressing member 2 is fitted with the supporting member 1, compared with locking with a lock, the method of maintaining the fitting state of the two by using a lifting drive mechanism is more stable and reliable, which can reduce the situation where the vacuum extraction chamber 5 is not sealed enough and some areas of the thermoplastic seal are not well sealed due to insufficient fitting.

[0076] In addition, compared with the hinged buckle in the related art, the lifting buckle in this solution can make the elastic sealing ring at the contact surface of the supporting member 1 and the pressing member 2 more evenly stressed, reducing the situation where the elastic sealing ring is unevenly stressed and deformed to varying degrees, thereby reducing the sealing degree of the vacuum extraction chamber 5. Finally, the vacuum extraction chamber 5 is well sealed and the complete thermoplastic sealing effect is maintained after frequent use, so as to form a good vacuum sealing effect for the packaging bag.

[0077] The embodiment of the present application discloses a vacuum sealing method. A vacuum sealing method comprises the following steps:

[0078] S1 . Loading: insert the mouth of the packaging bag into the vacuum sealer from the feeding port 64 , so that the mouth of the packaging bag is located between the first tank body 11 and the second tank body 21 .

[0079] S2, press down to drive the pressing member 2 to move down and press on the supporting member 1; wherein the first groove body 11 and the second groove body 21 form a vacuum extraction chamber 5 covering the mouth of the packaging bag, and the sealing pressing member 2 cooperates with the sealing supporting member 1 to clamp the packaging bag.

[0080] S3, evacuating the air, applying negative pressure to the vacuum extraction chamber 5 to extract the air in the packaging bag through the opening of the packaging bag.

[0081] S4, heat sealing, heating and sealing the packaging bag clamped by the sealing pressing member 2 and the sealing supporting member 1.

[0082] S5, lifting the material out, driving the pressing member 2 to move upward and separate from the supporting member 1, and taking the mouth of the packaging bag out of the vacuum sealing machine.

[0083] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A vacuum sealing machine, characterized in that: include: Base (9); A supporting member (1) is arranged on the base (9); the supporting member (1) is provided with a first groove body (11) and a sealing supporting portion, and the first groove body (11) and the sealing supporting portion are arranged at intervals along the direction of placing the packaging bag; The pressing member (2) is located above the supporting member (1) and can be raised and lowered relative to the base (9); the pressing member (2) is provided with a second groove body (21) aligned with the first groove body (11), and the pressing member (2) is provided with a sealing pressing portion (22) aligned with the sealing supporting portion; when the supporting member (1) and the pressing member (2) are fitted together, the first groove body (11) and the second groove body (21) are buckled together to form a vacuum extraction chamber (5), and the sealing supporting portion and the sealing pressing portion (22) cooperate to clamp the packaging bag; an elastic sealing ring capable of surrounding the vacuum extraction chamber (5) is provided at the fitting surfaces of the supporting member (1) and the pressing member (2); A lifting drive mechanism, used for driving the pressing member (2) to lift and lower; A vacuum extraction member (7) connected to the vacuum extraction chamber (5); A sealing heating element is arranged on the sealing supporting portion or the sealing pressing portion (22); The lifting drive mechanism comprises an end driving assembly (3) and a linkage assembly (4); the end driving assembly (3) is located at one end of the pressing member (2) and is used to drive the end of the pressing member (2) to rise and fall; the linkage assembly (4) is used to transmit power from one end of the pressing member (2) to the other end to achieve synchronous lifting of both ends; The end driving assembly (3) comprises a cam (31), a driving motor (32) for driving the cam (31) to rotate, and a driving frame (33) for cooperating with the cam (31), wherein the driving motor (32) is fixed to the base (9), the driving frame (33) is fixed to one end of the pressing member (2), and the driving frame (33) is provided with an abutting groove (331) for accommodating the cam (31), and the groove wall of the abutting groove (331) is used for abutting against the outer wall of the cam (31); The linkage assembly (4) comprises a first connecting rod (41) and a second connecting rod (42), wherein the middle parts of the first connecting rod (41) and the second connecting rod (42) are connected to the rotating shaft of the base (9), and the end of the first connecting rod (41) close to the second connecting rod (42) is provided with a sliding groove (411) extending along its own length direction, and the end of the second connecting rod (42) is provided with a sliding rod (421) capable of sliding and rotating in the sliding groove (411); the ends of the first connecting rod (41) and the second connecting rod (42) which are away from each other are provided with a movable groove (44) extending along their own length direction, and both ends of the pressure member (2) are provided with movable rods (45) capable of sliding and rotating in the movable groove (44), and the center distance between the rotation axis of the middle parts of the first connecting rod (41) and the second connecting rod (42) and the rotation axis of the sliding rod (421) is equal; The sealing support portion is an elastic support strip (12), and the elastic support strip (12) protrudes from the upper surface of the support member (1); the sealing pressing portion (22) is provided with a matching groove (221) for the elastic support strip (12) to extend into, and the groove depth of the matching groove (221) is less than the height of the elastic support strip (12) protruding from the upper surface of the support member (1) in a natural state; and the sealing pressing portion (22) is provided with a mounting groove (222) for accommodating a sealing heating member on a side facing away from the sealing support portion.

2. A vacuum sealer according to claim 1, characterized in that: The vacuum sealing machine also includes a shell (6), the base (9), the supporting member (1), and the pressing member (2) are all located inside the shell (6), a material inlet (64) is provided on one side of the shell (6), and the position of the material inlet (64) is adapted to the fitting surface of the supporting member (1) and the pressing member (2); the sealing supporting member and the sealing pressing member (22) are both located between the material inlet (64) and the vacuum extraction chamber (5); The base (9) is provided with a receiving groove (91) for receiving the supporting member (1), and the receiving groove (91) is open on one side close to the material inlet (64); the shell (6) is provided with a draw-out opening (65) on one side of the material inlet (64) which is connected to the material inlet (64) and for the supporting member (1) to enter and exit, and the supporting member (1) is provided with a force-applying portion (16) on one side close to the draw-out opening (65); The sealing heating component is arranged on the sealing pressing portion (22), and the vacuum extraction component (7) is connected to the pressing component (2).

3. A vacuum sealer according to claim 1, characterized in that: The supporting member (1) is provided with a strip groove (14) for embedding the elastic supporting strip (12), the elastic supporting strip (12) is provided with a heat insulating groove (121), and the supporting member (1) on the side of the elastic supporting strip (12) away from the first groove body (11) is provided with a heat-resistant groove (15).

4. A vacuum sealer according to claim 2, characterized in that: The shell (6) comprises a first half shell (61), a second half shell (62) and an end cover (63); the first half shell (61) and the second half shell (62) are buckled together to form a shell body; there are two end covers (63), and the two end covers (63) are respectively used to be sleeved on the two ends of the shell body.

5. A vacuum sealer according to claim 1, characterized in that: The vacuum sealing machine further comprises a storage battery (8) connected to the base (9), and the storage battery (8) is electrically connected to the vacuum extraction component (7) and the sealing heating component respectively.

6. A vacuum sealing method, characterized in that: A vacuum sealer according to any one of claims 1 to 5, comprising the following steps: S1, loading the material, extending the mouth of the packaging bag into the vacuum sealing machine from the feeding port (64), so that the mouth of the packaging bag is located between the first trough body (11) and the second trough body (21); S2, pressing downward, driving the pressing member (2) to move downward and press against the supporting member (1); wherein the first groove body (11) and the second groove body (21) form a vacuum extraction chamber (5) covering the mouth of the packaging bag, and the sealing pressing member (2) and the sealing supporting member (1) cooperate to clamp the packaging bag; S3, evacuating the air by applying negative pressure to the vacuum extraction chamber (5) to extract the air in the packaging bag through the opening of the packaging bag; S4, heat sealing, heating and sealing the packaging bag clamped by the sealing pressing member (2) and the sealing supporting member (1); S5, lifting the material out, driving the pressing member (2) to move upward and separate from the supporting member (1), and taking the mouth of the packaging bag out of the vacuum sealing machine.

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