Packaging bag sealing method, sealing device and packaging equipment

Abstract

The present invention discloses a packaging bag sealing method, sealing device and packaging equipment. The method comprises the following steps: loading material into a packaging bag to be sealed, causing the material to fall onto the lower portion of the packaging bag to be sealed to form a receiving portion, while the upper portion of the packaging bag to be sealed is an empty portion; placing the empty portion of the packaging bag to be sealed horizontally between a first shaping block and a second shaping block; a bag receiving seat supporting the bottom of the packaging bag to be sealed; the first shaping block and the second shaping block approaching each other to limit the empty portion; the bag receiving seat and the first shaping block and the second shaping block moving closer to each other in the height direction; pressing the shoulder of the receiving portion of the packaging bag to be sealed against the lower edge of the first shaping block and the second shaping block to shape the packaging bag to be sealed; and configuring the first shaping block, the second shaping block, the bag receiving seat and the controller so that the controller can drive the first shaping block and the second shaping block to move closer to or away from the bag receiving seat, thereby realizing the function of shaping the receiving portion of the packaging bag sealing device.

Description

Technical Field

[0001] The present invention relates to the technical field of product packaging, and in particular to a packaging bag sealing device, a packaging bag sealing method, and packaging equipment. Background Art

[0002] Many products need to be packaged in bags. Take tea as an example. Today's tea packaging bags not only require that the tea be sealed in the packaging bags, but also require that the shape of the tea packaging bags after packaging is regular and the packaging effect is good.

[0003] A common tea packaging bag structure is listed as an example. Its structure includes a top sealing area at the upper part of the packaging bag, a packaging area in the middle, and a bottom sealing area at the bottom of the packaging bag. The packaging area is square, that is, a rectangular parallelepiped shape, to accommodate the material to be packaged.

[0004] Traditionally, tea packaging has been done manually. In recent years, a number of packaging machines have emerged, significantly improving packaging efficiency and reducing labor costs. However, existing packaging machines are unable to efficiently and conveniently shape the bags, resulting in poor aesthetics. Furthermore, the irregular edge sealing area at the bottom of the bags means that the tea leaves occupy a large space within the packaging box when placed, making it difficult to place the entire tea in a row, which is inconvenient. Furthermore, the tea packaging is unsightly, resulting in a low packaging yield. Alternatively, a rigid lining must be added to the bag to achieve a regular appearance. Summary of the Invention

[0005] In view of the above problems, the present application provides a method for sealing a packaging bag, thereby efficiently achieving the packaging and sealing of packaging bags with regular shapes.

[0006] To achieve the above-mentioned purpose, the present application provides a method for sealing a packaging bag, comprising the steps of:

[0007] Put the material into the packaging bag to be sealed, the material falls into the lower part of the packaging bag to be sealed to form a accommodating part, and the upper part of the packaging bag to be sealed is an empty part;

[0008] The empty portion of the packaging bag to be sealed is placed between the first shaping block and the second shaping block in the horizontal direction, the bag receiving seat supports the bottom of the packaging bag to be sealed, the first shaping block and the second shaping block are close to each other to limit the empty portion, the bag receiving seat and the first shaping block and the second shaping block are relatively moved in the height direction, the shoulder of the accommodating portion of the packaging bag to be sealed is pressed against the lower edge of the first shaping block and the second shaping block, and the packaging bag to be sealed is shaped.

[0009] In some embodiments, when the first shaping block and the second shaping block are close to each other to limit the empty portion, the first shaping block and the second shaping block clamp the empty portion.

[0010] In some embodiments, after shaping the packaging bag to be sealed, the method further comprises the following steps:

[0011] The first shaping block and the second shaping block release the empty portion, and the bag receiving seat and the first shaping block and the second shaping block continue to move closer to each other in the height direction to discharge the gas in the accommodating portion.

[0012] In some embodiments, the first shaping block and the second shaping block are sealing blocks. When the first shaping block and the second shaping block clamp the empty portion, the first shaping block and the second shaping block seal the packaging bag to be sealed to form a first sealing area.

[0013] In some embodiments, the first shaping block and the second shaping block are sealing blocks;

[0014] After the material is loaded into the packaging bag to be sealed, the first shaping block and the second shaping block clamp the empty portion, and the first shaping block and the second shaping block pre-seal the packaging bag to be sealed to form a pre-sealed area;

[0015] The first shaping block is separated from the second shaping block;

[0016] The bag receiving seat supports the bottom of the packaging bag to be sealed, the first shaping block and the second shaping block are close to each other to limit the empty part, and the bag receiving seat and the first shaping block and the second shaping block move relatively close to each other in the height direction, pressing the shoulder of the accommodating part of the packaging bag to be sealed against the lower edge of the first shaping block and the second shaping block to shape the packaging bag to be sealed.

[0017] In some embodiments, after the material is loaded into the packaging bag to be sealed, a material pressing block is inserted into the bag opening of the packaging bag to be sealed, and pressure is applied from top to bottom to squeeze the material.

[0018] In some embodiments, after the material is loaded into the packaging bag to be sealed, an inert gas is filled into the packaging bag to be sealed, and then the packaging bag to be sealed is shaped.

[0019] In some embodiments, after the material is loaded into the packaging bag to be sealed, a material pressing block is inserted into the bag opening of the packaging bag to be sealed, and pressure is applied from top to bottom to squeeze the material, and inert gas is filled into the packaging bag to be sealed from the inflation port on the material pressing block.

[0020] In some embodiments, the inert gas is filled into the packaging bag to be sealed from the inflation port on the material briquette, specifically including: when the material briquette applies pressure to the material, the inert gas is filled into the packaging bag to be sealed from the inflation port on the material briquette and / or when the material briquette is moved out of the packaging bag to be sealed, the inert gas is filled into the packaging bag to be sealed from the inflation port on the material briquette.

[0021] In some embodiments, the first shaping block and the second shaping block are sealing blocks;

[0022] After the packaging bag to be sealed is shaped, the packaging bag to be sealed falls on the bag receiving seat, and the bag receiving seat and the first shaping block and the second shaping block move away from each other in the height direction; the first shaping block and the second shaping block approach each other to clamp the empty part, and the packaging bag to be sealed is sealed to form a second sealing area.

[0023] In some embodiments, the bag receiving seat can move up and down in the height direction, and the first shaping block and the second shaping block are fixed in the height direction.

[0024] The present application also provides a packaging bag sealing device, which can efficiently achieve the packaging and sealing of packaging bags with regular shapes. The packaging bag sealing device of the present application includes:

[0025] A loading mechanism, which is used to load materials into the packaging bag to be sealed, so that the materials fall into the lower part of the packaging bag to be sealed to form a receiving portion, and the upper part of the packaging bag to be sealed is an empty portion;

[0026] A bag receiving seat, which is used to support the bottom of the packaging bag to be sealed;

[0027] A shaping mechanism, the shaping mechanism comprising a first shaping block and a second shaping block, wherein the first shaping block and the second shaping block are arranged to reciprocate relative to each other in a horizontal direction;

[0028] The bag receiving seat and the shaping mechanism are arranged to reciprocate relative to each other in the height direction;

[0029] A controller comprising a computer program; when the computer program is executed by a processor, the following steps are implemented:

[0030] Put the materials into the packaging bags to be sealed;

[0031] The empty portion of the packaging bag to be sealed is placed between the first shaping block and the second shaping block in the horizontal direction, the bag receiving seat supports the bottom of the packaging bag to be sealed, the first shaping block and the second shaping block are close to each other to limit the empty portion, the bag receiving seat and the first shaping block and the second shaping block are relatively moved in the height direction, the shoulder of the accommodating portion of the packaging bag to be sealed is pressed against the lower edge of the first shaping block and the second shaping block, and the packaging bag to be sealed is shaped.

[0032] In some embodiments, when the computer program is executed by a processor, the computer program further implements the following steps:

[0033] When the first shaping block and the second shaping block are close to each other to limit the empty portion, the first shaping block and the second shaping block clamp the empty portion.

[0034] In some embodiments, when the computer program is executed by a processor, the computer program further implements the following steps:

[0035] The first shaping block and the second shaping block release the empty portion, and the bag receiving seat and the first shaping block and the second shaping block continue to move closer to each other in the height direction to discharge the gas in the accommodating portion.

[0036] In some embodiments, the first shaping block and the second shaping block are sealing blocks; when the computer program is executed by a processor, the following steps are further implemented:

[0037] When the first shaping block and the second shaping block clamp the empty portion, the first shaping block and the second shaping block seal the packaging bag to be sealed to form a first sealing area.

[0038] In some embodiments, the first shaping block and the second shaping block are sealing blocks; when the computer program is executed by a processor, the following steps are further implemented:

[0039] After the material is loaded into the packaging bag to be sealed, the first shaping block and the second shaping block clamp the empty portion, and the first shaping block and the second shaping block pre-seal the packaging bag to be sealed to form a pre-sealed area;

[0040] The first shaping block is separated from the second shaping block;

[0041] The bag receiving seat supports the bottom of the packaging bag to be sealed, the first shaping block and the second shaping block are close to each other to limit the empty part, and the bag receiving seat and the first shaping block and the second shaping block move relatively close to each other in the height direction, pressing the shoulder of the accommodating part of the packaging bag to be sealed against the lower edge of the first shaping block and the second shaping block to shape the packaging bag to be sealed.

[0042] In some embodiments, further comprising:

[0043] A material pressing block is placed above the bag receiving seat, and the material pressing block and the bag receiving seat reciprocate relative to each other in the height direction, and the material pressing block is used to squeeze the material in the packaging bag to be sealed;

[0044] When the computer program is executed by a processor, the following steps are further implemented:

[0045] After the material is put into the packaging bag to be sealed, the material pressing block is inserted into the bag opening of the packaging bag to be sealed, and pressure is applied from top to bottom to squeeze the material.

[0046] In some embodiments, further comprising:

[0047] A material pressing block is placed above the bag receiving seat, and the material pressing block and the bag receiving seat reciprocate relative to each other in the height direction. The material pressing block is used to squeeze the material in the packaging bag to be sealed, and an inflation port is also provided on the material pressing block, and the inflation port is used to fill the packaging bag to be sealed with inert gas;

[0048] When the computer program is executed by a processor, the following steps are further implemented:

[0049] After the material is put into the packaging bag to be sealed, inert gas is filled into the packaging bag to be sealed.

[0050] In some embodiments, when the computer program is executed by a processor, the computer program further implements the following steps:

[0051] After the material is loaded into the packaging bag to be sealed, the material pressing block is inserted into the bag opening of the packaging bag to be sealed, and pressure is applied from top to bottom to squeeze the material, and inert gas is filled in from the inflation port on the material pressing block.

[0052] In some embodiments, when the computer program is executed by a processor, the computer program further implements the following steps:

[0053] The inert gas is filled into the packaging bag to be sealed from the inflation port on the material briquette specifically includes: when the material briquette applies pressure to the material, the inert gas is filled into the packaging bag to be sealed from the inflation port on the material briquette and / or when the material briquette is moved out of the packaging bag to be sealed, the inert gas is filled into the packaging bag to be sealed from the inflation port on the material briquette.

[0054] In some embodiments, when the computer program is executed by a processor, the computer program further implements the following steps:

[0055] After the packaging bag to be sealed is shaped, the bag receiving seat and the first shaping block and the second shaping block move away from each other in the height direction; the first shaping block and the second shaping block approach each other to clamp the empty part, seal the packaging bag to be sealed, and form a second sealing area.

[0056] In some embodiments, when the computer program is executed by a processor, the computer program further implements the following steps:

[0057] The bag receiving seat can move up and down in the height direction, and the first shaping block and the second shaping block are fixedly arranged in the height direction.

[0058] The present application also provides a packaging device, which has any one of the packaging bag sealing devices described above.

[0059] In some embodiments, the packaging device is a tea packaging machine.

[0060] Different from the existing technology, the above technical solution can efficiently achieve the packaging and sealing of packaging bags with regular shapes by having the first shaping block and the second shaping block lean against each other to limit the empty part, and by having the bag receiving seat and the first shaping block and the second shaping block move relatively close to each other in the height direction.

[0061] The packaging bag sealing device and packaging equipment of the above technical solution, through the arrangement of the first shaping block, the second shaping block, the bag receiving seat and the controller, enables the controller to drive the first shaping block and the second shaping block to move closer to or away from the bag receiving seat, thereby realizing the function of the packaging bag sealing device to shape the accommodating portion.

[0062] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0064] Figure 1 This is a structural diagram of the packaging bag sealing device described in the embodiment;

[0065] Figure 2 This is a front view of the packaging bag sealing device according to the embodiment;

[0066] Figure 3 This is a rear view of the packaging bag sealing device according to the embodiment;

[0067] Figure 4 This is a structural diagram of the shaping mechanism described in the embodiment;

[0068] Figure 5 This is the structural diagram of the first sealed packaging bag in the embodiment;

[0069] Figure 6 The second sealed packaging bag structure of the embodiment Figure 1 ;

[0070] Figure 7 The second sealed packaging bag structure of the embodiment Figure 2 ;

[0071] Figure 8 This is a structural diagram of the packaging bag to be sealed according to the embodiment;

[0072] Figure 9 This is a structural diagram of the vacant portion and the accommodating portion described in the embodiment;

[0073] Figure 10 This is a flow chart of the material pressing block extending into the packaging bag to be sealed according to the embodiment;

[0074] Figure 11 This is a flow chart of applying pressure to the material by briquetting the material as described in the embodiment;

[0075] Figure 12 This is a flow chart of placing the packaging bag to be sealed in the bag receiving seat according to the embodiment;

[0076] Figure 13 This is the pre-sealing process described in the embodiment;

[0077] Figure 14 This is the process of squeezing air downward before shaping as described in the embodiment;

[0078] Figure 15 For example Figure 14 Enlarged view of point A in the middle;

[0079] Figure 16 This is a flow chart of position limiting described in the embodiment;

[0080] Figure 17 This is a flow chart of the shaping process described in the embodiment;

[0081] Figure 18 This is a flow chart of exhausting air after shaping as described in the embodiment;

[0082] Figure 19 This is a flow chart of forming the first sealing area in an embodiment;

[0083] Figure 20 This is a flow chart of the embodiment of the bag receiving seat moving away from the first shaping block and the second shaping block;

[0084] Figure 21 This is a flow chart of forming the second sealing area after shaping in the embodiment.

[0085] Description of reference numerals:

[0086] 10. Lifting mechanism;

[0087] 11. Third power source; 12. Third gear; 13. Third rack;

[0088] 20. Bag receiving seat;

[0089] 21. First side wall; 22. Second side wall; 23. Bottom plate;

[0090] 31. First shaping block; 32. Second shaping block; 33. First power source; 34. First gear; 35. First rack; 36. Second power source; 37. Second gear; 38. Second rack; 39. First slide rail; 310. First slider;

[0091] 3101, the lower edge of the first shaping block;

[0092] 3201, the lower edge of the second shaping block;

[0093] 40. Material briquetting.

[0094] 51. First sealing area; 52. Second sealing area; 53. Pre-sealing area;

[0095] 61. Packaging bag to be sealed; 62. First sealed packaging bag; 63. Second sealed packaging bag; 64. Pre-sealed packaging bag;

[0096] 611, vacant portion; 612, accommodating portion;

[0097] 6111. Upper edge of the accommodating portion; 6112. Shoulder of the accommodating portion. DETAILED DESCRIPTION

[0098] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0099] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0100] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0101] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0102] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0103] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0104] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0105] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0106] See also Figures 1 to 21 This embodiment provides a method for sealing a packaging bag, comprising the steps of:

[0107] Please refer to Figure 10 、 Figure 11 、 Figure 14 、 Figure 16 and Figure 17 The material is put into the packaging bag to be sealed 61, and the material falls into the lower part of the packaging bag to be sealed 61 to form a receiving portion 612, and the upper part of the packaging bag to be sealed 61 is an empty portion 611;

[0108] The empty portion 611 of the packaging bag 61 to be sealed is placed horizontally between the first shaping block 31 and the second shaping block 32. The bag receiving seat 20 supports the bottom of the packaging bag 61 to be sealed. The first shaping block 31 and the second shaping block 32 are close to each other to limit the empty portion 611. The bag receiving seat 20 and the first shaping block 31 and the second shaping block 32 move relatively close to each other in the height direction. The shoulder 6112 of the accommodating portion of the packaging bag 61 to be sealed is pressed against the lower edge 3101 of the first shaping block and the lower edge 3201 of the second shaping block to shape the packaging bag 61 to be sealed.

[0109] It should be noted that, in the present application, the relative movement of the bag receiving seat 20 and the first shaping block 31 and the second shaping block 32 can be achieved by driving the bag receiving seat 20 to move, or the relative movement of the bag receiving seat 20 and the first shaping block 31 and the second shaping block 32 can be achieved by driving the first shaping block 31 and the second shaping block 32 to move; of course, in some embodiments, the relative movement of the two can also be achieved by driving the bag receiving seat 20 and the first shaping block 31 and the second shaping block 32 to move at the same time.

[0110] Relative approach and mutual approach refer to the gap between two objects becoming smaller and smaller until the two objects touch each other; similarly, relative distance and separation refer to the gap between two objects becoming larger and larger.

[0111] It should be further explained that the size of the accommodating portion 612 and the empty portion 611 is determined by the actual amount of material; that is, the height of the accommodating portion 612 is determined by the amount of material. During bagging, the bagging amount is pre-set according to the program, which in turn determines the height of the accommodating portion 612. Specifically, when using the same unsealed packaging bag 61, the upper edge 6111 of the accommodating portion (the top edge of the accommodating portion 612, i.e., the boundary between the accommodating portion 612 and the empty portion 611) will vary depending on the amount of material.

[0112] See also Figure 7 When the packaging bag to be sealed has not yet been squeezed and shaped, the height of the upper edge 6111 of the accommodating portion is higher than the height of the upper edge 6111 of the accommodating portion after the shaping.

[0113] During shaping, the portion of the packaging bag that is higher than the upper edge 6111 of the accommodating portion is shaped into the shoulder 6112 of the accommodating portion. That is, the shoulder 6112 of the accommodating portion is formed by squeezing and folding the packaging bag body that is higher than the material portion. Figure 7 The packaging bag portion is located above the horizontally arranged accommodating portion.

[0114] When the first shaping block 31 and the second shaping block 32 are brought close to each other to limit the position of the empty portion 611, the packaging bag 61 to be sealed can achieve different limiting effects according to the actual force, that is, the limiting includes at least the following three different implementation methods:

[0115] In the first implementation, the limiting mechanism means that when the first shaping block 31 and the second shaping block 32 are lightly touching or relatively close to each other, the first shaping block 31 and the second shaping block 32 ensure that the accommodating portion 612 has a certain degree of airtightness. However, when the accommodating portion is subjected to external impact or compression, for example, when the bag receiving seat 20 and the first shaping block 31 and the second shaping block 32 move relatively close to each other in the height direction, gas can be discharged from the gap above the accommodating portion 612. However, due to the small gap, the gas in the accommodating portion 612 escapes slowly, which facilitates shaping. Therefore, in this case, the accommodating portion 612 has both a shaping effect and an exhaust effect.

[0116] In the second implementation, the limiting means that when the first shaping block 31 and the second shaping block 32 are tightly fitted together (i.e., the first shaping block 31 and the second shaping block 32 are clamped), the accommodating portion 612 will form a closed cavity and the gas will not be able to be discharged from the upper edge 6111 of the accommodating portion.

[0117] In the third implementation, the limiting means that the first shaping block 31 and the second shaping block 32 are only used to limit the position of the packaging bag 61 to be sealed, and the gas can be smoothly discharged from the upper edge 6111 of the accommodating portion; at this time, there is a certain distance between the first shaping block 31 and the second shaping block 32 to ensure that the gas can be smoothly discharged from the packaging bag 61 to be sealed.

[0118] In different embodiments, the first shaping block 31 and the second shaping block 32 can be connected to a slide rail, a rack, an air cylinder, an oil cylinder or a motor. The slide rail, the rack, the air cylinder, the oil cylinder or the motor drives the first shaping block 31 and the second shaping block 32 to move closer or farther away in the horizontal direction. By adjusting the force strength of the air cylinder, the oil cylinder or the motor, the airtightness of the accommodating portion 612 can be adjusted.

[0119] In an embodiment, the relative approach movement between the shaping mechanism and the bag receiving seat may have multiple functions or one of them.

[0120] First, the empty portion 611 is placed between the first shaping block 31 and the second shaping block 32 , so as to facilitate the first shaping block 31 and the second shaping block 32 to limit the packaging bag 61 to be sealed.

[0121] Secondly, it is used to squeeze the accommodating portion 612 so that the accommodating portion 612 is shaped into a square structure. Therefore, the distance between the two is shorter. Figure 17 That is, the distance between the shaping mechanism and the bag receiving seat 20 is reduced, squeezing the accommodating portion 612. Of course, in some embodiments, the first shaping block 31 and the second shaping block 32 can be close to the bag receiving seat 20 for squeezing and then move away again to perform subsequent steps or release the packaging bag.

[0122] Third, it is used to squeeze the accommodating portion 612 and discharge the gas in the accommodating portion 612. Therefore, the approach distance is shorter this time. Figure 18 That is, the distance between the shaping mechanism and the bag receiving seat 20 is reduced, and the extruded accommodating portion 612 expel excess air from the unsealed packaging bag 61. Of course, in some embodiments, the first and second shaping blocks 31, 32 approach the bag receiving seat 20 and then move away again after being squeezed. That is, the distance between the first and second shaping blocks 31, 32 and the bag receiving seat 20 remains unchanged before and after squeezing. With this embodiment, the air in the accommodating portion 612 is reduced, which facilitates the preservation of tea leaves and other materials, or facilitates compact packaging.

[0123] It should also be noted that the relative approach movement can be the first shaping block 31 and the second shaping block 32 approaching the bag receiving seat 20, or the bag receiving seat 20 approaching the first shaping block 31 and the second shaping block 32, or the first shaping block 31 and the second shaping block 32 and the bag receiving seat 20 approaching each other synchronously.

[0124] In the present application, when the bag receiving seat 20 moves relatively close to the first shaping block 31 and the second shaping block 32; from the perspective of avoiding component interference or equipment usability and reliability, in a preferred embodiment, the bag receiving seat 20 moves in the up and down direction (i.e., the height direction), and the first shaping block 31 and the second shaping block 32 are stationary in the height direction.

[0125] The height direction is the vertical direction in the drawings; the horizontal direction is the horizontal direction in the drawings.

[0126] Furthermore, the horizontal movement is not limited to the movement direction being strictly horizontal. Those skilled in the art must be aware that, in the present patent application, the horizontal movement can achieve its purpose and technical effect as long as the distance between the two objects in the horizontal direction can be closer to or farther away from each other as the two objects move. In specific implementations, it can be movement only in the horizontal plane; it can also be oblique movement with a certain inclination, with a movement component in the horizontal plane; it can also be movement in the form of first moving a distance in the vertical direction and then moving a distance in the horizontal plane, etc. In short, in the overall movement process, it achieves position movement in the horizontal plane, which should be regarded as the horizontal movement described in the present patent application.

[0127] It should also be noted that before the packaging bag 61 to be sealed is placed on the bag receiving seat 20, the packaging bag 61 to be sealed is opened by the bag-opening mechanism, and materials such as tea are poured into the packaging bag 61 to be sealed from the empty part 611, and then the packaging bag 61 to be sealed is sealed.

[0128] The above technical solution, through the setting of the first shaping block 31, the second shaping block 32, the bag receiving seat 20 and the controller, enables the controller to drive the first shaping block 31 and the second shaping block 32 to move closer to or away from the bag receiving seat 20, thereby realizing the function of the shaping receiving part 612 of the packaging bag sealing device.

[0129] See also Figures 16 and 17 When the first shaping block 31 and the second shaping block 32 approach each other to limit the vacant portion 611 , the first shaping block 31 and the second shaping block 32 clamp the vacant portion 611 .

[0130] In this embodiment, when the first shaping block 31 and the second shaping block 32 are tightly fitted together (i.e., the first shaping block 31 and the second shaping block 32 are clamped), the accommodating portion 612 will form a closed cavity, and gas will not be able to be discharged from the upper edge 6111 of the accommodating portion.

[0131] See also Figure 18 After the packaging bag 61 to be sealed is shaped, the following steps are also included:

[0132] The first shaping block 31 and the second shaping block 32 release the empty portion 611 , and the bag receiving seat 20 and the first shaping block 31 and the second shaping block 32 continue to move closer to each other in the height direction to discharge the gas in the accommodating portion 612 .

[0133] In this embodiment, the bag receiving seat 20, the first shaping block 31 and the second shaping block 32 are used to squeeze the accommodating portion 612 and discharge the gas in the accommodating portion 612. The distance between them is relatively short. Figure 18 After this embodiment, the air in the accommodating portion 612 is reduced, which is beneficial to the preservation of materials such as tea.

[0134] See also Figure 17 and Figure 19 The first shaping block 31 and the second shaping block 32 are sealing blocks. When the first shaping block 31 and the second shaping block 32 clamp the vacant portion 611 , the first shaping block 31 and the second shaping block 32 seal the packaging bag 61 to be sealed, forming a first sealing area 51 .

[0135] See also Figure 19 and Figure 21 Sealing means that the first shaping block 31 and the second shaping block 32 are both sealing blocks, and the first shaping block 31 and the second shaping block 32 move relatively close to each other until the first shaping block 31 and the second shaping block 32 are attached and stay for a first preset time, and then the first shaping block 31 and the second shaping block 32 move apart.

[0136] When the first shaping block 31 and the second shaping block 32 perform the sealing operation, the first shaping block 31 and the second shaping block 32 approach each other, and after a first preset time, the first shaping block 31 and the second shaping block 32 separate; after separation, the distance between the first shaping block 31 and the second shaping block 32 is equal to the distance between the first shaping block 31 and the second shaping block 32 before the sealing operation.

[0137] It should be further explained that in some embodiments, a shaping block and a sealing block can be separately provided in the device to realize the shaping function and the sealing function respectively. However, in a preferred embodiment, a sealing block can be used as a shaping block. The sealing block can be a heating sealing block or an ultrasonic sealing block, etc., as long as it can realize the sealing function. In a preferred embodiment, the sealing block and the shaping block are combined into one, which simplifies the structure and reduces the cost. It is also possible to transform and upgrade some existing sealing devices and packaging equipment into the sealing devices and packaging equipment described in the embodiment.

[0138] See also Figures 13 to 15 , the first shaping block 31 and the second shaping block 32 are sealing blocks;

[0139] After the material is loaded into the packaging bag to be sealed 61, the first shaping block 31 and the second shaping block 32 clamp the vacant portion 611, and the first shaping block 31 and the second shaping block 32 pre-seal the packaging bag to be sealed 61 to form a pre-sealed area 53;

[0140] The first shaping block 31 is separated from the second shaping block 32;

[0141] The bag receiving seat 20 supports the bottom of the packaging bag to be sealed 61, and the first shaping block 31 and the second shaping block 32 are close to each other to limit the empty part 611. The bag receiving seat 20 and the first shaping block 31 and the second shaping block 32 move relatively close to each other in the height direction, and the shoulder 6112 of the accommodating part of the packaging bag to be sealed 61 is pressed against the lower edge 3101 of the first shaping block and the lower edge 3201 of the second shaping block to shape the packaging bag to be sealed 61.

[0142] See also Figure 13 Pre-sealing refers to the situation where both the first shaping block 31 and the second shaping block 32 serve as sealing blocks, and the first shaping block 31 and the second shaping block 32 move toward each other until they abut and remain there for a second predetermined time, forming a pre-sealed area 53. The first shaping block 31 and the second shaping block 32 then separate; the second predetermined time is shorter than the first predetermined time. Pre-sealing ensures a certain degree of airtightness in the package 61 to be sealed. However, due to the short contact time between the first shaping block 31 and the second shaping block 32, the sealing is poor, resulting in a weak seal and the pre-sealed area easily separating.

[0143] When the first shaping block 31 and the second shaping block 32 perform pre-sealing or sealing operations, the first shaping block 31 and the second shaping block 32 serve as sealing blocks; preferably, they serve as heat sealing blocks.

[0144] When the first shaping block 31 and the second shaping block 32 perform the pre-sealing operation, the first shaping block 31 and the second shaping block 32 approach each other, and after the second preset time, the first shaping block 31 and the second shaping block 32 separate; at this time, the separation distance between the first shaping block 31 and the second shaping block 32 is small, and the first shaping block 31 and the second shaping block 32 will work together on the vacant portion 611 to drive the gas in the vacant portion 611 into the accommodating portion 612.

[0145] In some embodiments, when the first shaping block 31 and the second shaping block 32 perform pre-sealing, the contact time of the first shaping block 31 and the second shaping block 32 is shorter than the contact time of the first shaping block 31 and the second shaping block 32 when forming the first sealing area 51;

[0146] After the material is loaded into the packaging bag to be sealed 61 , the material pressing block 40 is inserted into the bag opening of the packaging bag to be sealed 61 to apply pressure from top to bottom to squeeze the material.

[0147] It should be noted that the bag opening of the packaging bag to be sealed 61 and the material pressing block 40 are adapted to each other, and the material pressing head can extend into the packaging bag to be sealed 61, so that the material pressing head can apply uniform pressure to the material.

[0148] After the material is loaded into the packaging bag to be sealed 61 , an inert gas is filled into the packaging bag to be sealed 61 , and then the packaging bag to be sealed is shaped.

[0149] The inert gas in this embodiment is a gas that does not react with the material, and can be nitrogen, carbon dioxide or a rare gas.

[0150] After the material is loaded into the packaging bag 61 to be sealed, the material pressing block 40 is inserted into the bag opening of the packaging bag 61 to be sealed, and pressure is applied from top to bottom to squeeze the material, and inert gas is filled into the packaging bag to be sealed from the inflation port on the material pressing block 40.

[0151] The inert gas is filled into the packaging bag to be sealed from the inflation port on the material briquette specifically includes: when the material briquette applies pressure to the material, the inert gas is filled into the packaging bag to be sealed from the inflation port on the material briquette, so as to ensure that the air in the gap between the materials is discharged and fully replaced by the inert gas; or in the process of the material briquette moving out of the packaging bag to be sealed, the inert gas is filled into the packaging bag to be sealed from the inflation port on the material briquette, so as to ensure that the air does not enter the packaging bag again during the withdrawal of the material briquette; or when pressure is applied to the material, the inert gas is filled into the packaging bag to be sealed from the inflation port on the material briquette, and at the same time, in the process of the material briquette moving out of the packaging bag to be sealed, the inert gas is filled into the packaging bag to be sealed from the inflation port on the material briquette, so as to ensure that the gas in the gap between the materials is fully replaced by the inert gas, and also ensure that the packaging bag continues to be filled with inert gas when the material briquette withdraws.

[0152] Specifically, during the process of introducing the inert gas into the material briquette 40 , the air in the packaging bag to be sealed 61 is exhausted, and at this time the packaging bag to be sealed 61 is filled with the inert gas.

[0153] It should be noted that, in the embodiment, the bag opening of the packaging bag to be sealed 61 and the material pressing block 40 are adapted to each other, so that the material can be fully squeezed by the material pressing block. When the packaging bag to be sealed 61 is filled with inert gas, the gas in the packaging belt to be sealed will be discharged from the gap between the material pressing block 40 and the packaging bag to be sealed 61.

[0154] When the bag receiving seat 20 and the material pressing block 40 move away from each other, the distance between the bag receiving seat 20 and the material pressing block 40 does not affect the shaping and sealing operations of the first shaping block 31 and the second shaping block 32 .

[0155] The first shaping block 31 and the second shaping block 32 are sealing blocks;

[0156] If the first shaping block and the second shaping block clamp the vacant part during shaping, the first shaping block and the second shaping block move away from each other, and the packaging bag to be sealed is released. In this way, after the packaging bag to be sealed is shaped, the packaging bag to be sealed falls on the bag receiving seat; if the first shaping block and the second shaping block are not clamped during shaping, the packaging bag naturally falls on the bag receiving seat 20.

[0157] Therefore, in some embodiments, after the packaging bag 61 to be sealed is shaped, the packaging bag 61 to be sealed falls on the bag receiving seat 20, and the bag receiving seat 20 and the first shaping block 31 and the second shaping block 32 move away from each other in the height direction; the first shaping block 31 and the second shaping block 32 approach each other to clamp the empty portion 611, and the packaging bag 61 to be sealed is sealed to form a second sealing area 52.

[0158] The contact time between the first shaping block 31 and the second shaping block 32 when forming the second sealing area 52 is equal to the contact time between the first shaping block 31 and the second shaping block 32 when forming the second sealing area 51 .

[0159] In some embodiments, the second sealing area 52 is located near the opening of the packaging bag.

[0160] The second sealing area 52 is formed in the same principle as the first sealing area 51 ; in the present application, the second sealing area 52 can be formed directly, or the sealing area can be formed after the first sealing area 51 is formed.

[0161] The second sealing area 52 is formed by the bag receiving seat 20 and the first shaping block 31 and the second shaping block 32 moving away from each other in the height direction and being sealed by the first shaping block 31 and the second shaping block 32 .

[0162] It should also be noted that the first sealing area 51 is placed on the vacant portion 611 and close to the upper edge of the accommodating portion 612. After the sealing operation, the first sealing area 51 is formed at the upper edge 6111 of the accommodating portion. Figure 5 Similarly, the second sealing area 52 is placed on the empty portion 611. After the second sealing operation, the second sealing area 52 is formed on the empty portion 611. The second sealing area 52 is closer to the bag opening than the first sealing area 51. Please refer to Figures 6 and 7 .

[0163] Preferably, see Figure 9 The second sealing area 52 is placed on the edge of the vacant portion 611 away from the accommodating portion 612. The first sealing area 51 and the second sealing area 52 have a certain width. The packaging bag 61 to be sealed can be sealed once or twice.

[0164] The bag receiving seat can move up and down in the height direction, and the first shaping block and the second shaping block are fixedly arranged in the height direction.

[0165] In the present application, preferably, the first shaping block and the second shaping block are fixed in the height direction; the first shaping block and the second shaping block cannot move in the height direction; that is, in this embodiment, moving the empty part, discharging the gas in the accommodating part and shaping the accommodating part are all achieved by controlling the bag receiving seat to move in the height direction.

[0166] The first shaping block and the second shaping block can only perform approaching movement in the horizontal direction, that is, the first shaping block and the second shaping block can only perform limiting operation.

[0167] See also Figures 5 to 8 The packaging bag is a general term for the packaging bag to be sealed 61, the first sealed packaging bag 62 and the second sealed packaging bag 63. The packaging bag to be sealed 61 is a packaging bag that has not yet been sealed. The first sealed packaging bag 62 is only the first sealed packaging bag 62. The second sealed packaging bag 63 is the second sealed packaging bag 63; that is, the second sealed packaging bag 63 may have a first sealed area 51 and a second sealed area 52. Of course, the second sealed packaging bag 63 may also have only the second sealed area 52. Please refer to Figure 9 The packaging bag 61 to be sealed and the packaging bag 61 to be sealed after shaping and sealing can be divided into an empty portion 611 and a receiving portion 612. The receiving portion 612 can be used to accommodate food, tea, etc. When loading materials, the materials enter from the empty portion 611 and fall into the receiving portion 612. The empty portion 611 is placed above the receiving portion 612, and the materials enter from the empty portion 611 into the receiving portion 612. The empty portion 611 is then sealed to achieve the sealing of the packaging bag 61 to be sealed.

[0168] The following is further described in detail through some specific examples.

[0169] Example 1:

[0170] Please refer to Figures 12 to 16 When the packaging bag 61 to be sealed is placed on the bag receiving seat 20, the bag receiving seat 20 and the first shaping block 31 and the second shaping block 32 move relatively close to each other, so that the empty portion 611 of the packaging bag 61 to be sealed is placed between the first shaping block 31 and the second shaping block 32, and the first shaping block 31 and the second shaping block 32 pre-seal the packaging bag 61 to be sealed to form a pre-sealed packaging bag 64, so that the pre-sealed packaging bag 64 has a certain airtightness; the bag receiving seat 20 and the first shaping block 31 and the second shaping block 32 move relatively close to each other until the first shaping block 31 and the second shaping block 32 move to the upper edge 6111 of the accommodating portion; at this time, the first shaping block 31 and the second shaping block 32 only drive the gas in the empty portion 611 into the accommodating portion 612, please refer to Figure 15 The first shaping block 31 and the second shaping block 32 clamp the pre-sealed packaging bag 64 to prevent gas from escaping.

[0171] Please refer to Figures 17 to 21 , the bag receiving seat 20 and the shaping mechanism move relatively close to each other. At this time, since the accommodating portion 612 is filled with gas, and the top of the accommodating portion 612 is limited by the first shaping block 31 and the second shaping block 32, and the bottom of the accommodating portion 612 is limited by the bag receiving seat 20, when the bag receiving seat 20 and the shaping mechanism move relatively close to each other, the bag receiving seat 20 and the first shaping block 31 and the second shaping block 32 move relatively close to each other on the pre-sealed packaging bag 64 to squeeze the packaging bag to be sealed, so that the packaging bag in the accommodating portion 612 is The gas expands around the accommodating portion 612, expanding the accommodating portion 612. The shoulder 6112 of the accommodating portion presses against the lower edge 3101 of the first shaping block and the lower edge 3201 of the second shaping block, thereby shaping the accommodating portion 612. The first shaping block 31 and the second shaping block 32 release the pre-sealed packaging bag 64. The bag receiving seat 20 and the first shaping block 31 and the second shaping block 32 move closer to each other again, expelling the gas in the accommodating portion 612. At this time, the gas expands the pre-sealed area 53. Figure 18 and discharged from the pre-sealed packaging bag 64 to form a packaging bag to be sealed 61; the first shaping block 31 and the second shaping block 32 seal the packaging bag to be sealed 61 to form a first sealing area 51; the bag receiving seat 20 and the shaping mechanism move away from each other until the side of the empty portion 611 away from the accommodating portion 612 is placed between the first shaping block 31 and the second shaping block 32, and the first shaping block 31 and the second shaping block 32 seal the first sealed packaging bag 62 again to form a second sealing area 52, and form a second sealed packaging bag 63.

[0172] Example 2:

[0173] When the packaging bag 61 to be sealed is placed on the bag receiving seat 20, the bag receiving seat 20 and the first shaping block 31 and the second shaping block 32 move relatively close to each other until the first shaping block 31 and the second shaping block 32 move to the upper edge of the accommodating portion 612, and the first shaping block 31 and the second shaping block 32 seal the packaging bag 61 to be sealed to form a first sealing area 51.

[0174] The bag receiving seat 20 and the shaping mechanism move relatively close to each other. At this time, since the accommodating portion 612 is filled with gas, and the top of the accommodating portion 612 is limited by the shaping mechanism, and the bottom of the accommodating portion 612 is limited by the bag receiving seat 20, when the bag receiving seat 20 and the shaping mechanism move relatively close to each other, the bag receiving seat 20 and the first shaping block 31 and the second shaping block 32 move relatively close to each other on the first sealed packaging bag 62 to squeeze the packaging bag to be sealed, and the shoulder 6112 of the accommodating portion presses against the lower edge 3101 of the first shaping block and the second shaping block. The lower edge 3201 of the shaping block allows the gas in the accommodating portion 612 to expand around the accommodating portion 612, thereby expanding the accommodating portion 612 and shaping the accommodating portion 612; the bag receiving seat 20 and the first shaping block 31 and the second shaping block 32 move away from each other until the side of the empty portion 611 away from the accommodating portion 612 is placed between the first shaping block 31 and the second shaping block 32, and the first shaping block 31 and the second shaping block 32 seal the first sealed packaging bag 62 again to form a second sealing area 52.

[0175] In this embodiment, the accommodating portion 612 is directly sealed without exhaust. At this time, the accommodating portion 612 is filled with gas. When the packaging bag is impacted by external force, the gas can protect materials such as tea leaves; at the same time, the packaging bag has a certain elasticity and can recover by itself when impacted.

[0176] Example 3:

[0177] When the packaging bag 61 to be sealed is placed on the bag receiving seat 20, the bag receiving seat 20 and the first shaping block 31 and the second shaping block 32 move relative to each other until the first shaping block 31 and the second shaping block 32 move to the upper edge of the accommodating portion 612. The first shaping block 31 and the second shaping block 32 clamp the upper edge of the accommodating portion 612 of the packaging bag 61 to be sealed to prevent gas from escaping.

[0178] The bag receiving seat 20 and the shaping mechanism move closer to each other. At this time, since the accommodating portion 612 is filled with gas, the top of the accommodating portion 612 is limited by the shaping mechanism, and the bottom of the accommodating portion 612 is limited by the bag receiving seat 20, when the bag receiving seat 20 and the shaping mechanism move closer to each other, the bag receiving seat 20 and the first shaping block 31 and the second shaping block 32 move closer to each other on the first sealed packaging bag 62 to squeeze the packaging bag to be sealed, so that the gas in the accommodating portion 612 expands around the accommodating portion 612, expanding the accommodating portion 612, and the shoulder 6112 of the accommodating portion presses against the lower edge 3101 of the first shaping block and the lower edge 3201 of the second shaping block, thereby shaping the accommodating portion 612.

[0179] The first shaping block 31 and the second shaping block 32 seal the clamped packaging bag 61 to be sealed to form a first sealing area 51; the bag receiving seat 20 and the shaping mechanism move away from each other until the side of the empty portion 611 away from the accommodating portion 612 is placed between the first shaping block 31 and the second shaping block 32, and the first shaping block 31 and the second shaping block 32 seal the first sealed packaging bag 62 again to form a second sealing area 52.

[0180] Example 4:

[0181] When the packaging bag 61 to be sealed is placed on the bag receiving seat 20, the bag receiving seat 20 and the first shaping block 31 and the second shaping block 32 move relatively close to each other until the first shaping block 31 and the second shaping block 32 move to the upper edge of the accommodating portion 612. The first shaping block 31 and the second shaping block 32 will clamp the upper edge of the accommodating portion 612 of the packaging bag 61 to be sealed to prevent gas from escaping.

[0182] The bag receiving seat 20 and the first shaping block 31 and the second shaping block 32 move relatively close to each other. At this time, since the accommodating portion 612 is filled with gas, and the top of the accommodating portion 612 is limited by the shaping mechanism, and the bottom of the accommodating portion 612 is limited by the bag receiving seat 20, when the bag receiving seat 20 and the shaping mechanism move relatively close to each other, the bag receiving seat 20 and the first shaping block 31 and the second shaping block 32 move relatively close to each other to squeeze the packaging bag to be sealed 61, so that the gas in the accommodating portion 612 expands around the accommodating portion 612, expands the accommodating portion 612, and shapes the accommodating portion 612; the first shaping block 31 and the second shaping block 32 move relatively close to each other to squeeze the packaging bag to be sealed Block 32 releases the pre-sealed packaging bag 64, and the bag receiving seat 20 and the shaping mechanism move closer to each other again to discharge the gas in the accommodating portion 612, and the excess gas is discharged from the pre-sealed packaging bag 64; the first shaping block 31 and the second shaping block 32 seal the packaging bag to be sealed 61 to form a first sealing area 51; the bag receiving seat 20 and the shaping mechanism move away from each other until the side of the empty portion 611 away from the accommodating portion 612 is placed between the first shaping block 31 and the second shaping block 32, and the first shaping block 31 and the second shaping block 32 seal the first sealed packaging bag 62 again to form a second sealing area 52.

[0183] Embodiment 5:

[0184] When the packaging bag 61 to be sealed is placed on the bag receiving seat 20, the bag receiving seat 20 and the first shaping block 31 and the second shaping block 32 move relatively close to each other until the first shaping block 31 and the second shaping block 32 move to the upper edge of the accommodating portion 612. The first shaping block 31 and the second shaping block 32 clamp the upper edge of the accommodating portion 612 of the packaging bag 61 to be sealed. In this embodiment, the first shaping block 31 and the second shaping block 32 only play a limiting role, that is, the gas in the accommodating portion 612 can be squeezed out from above.

[0185] The bag receiving seat 20 and the first shaping block 31 and the second shaping block 32 move relatively close to each other. At this time, the bag receiving seat 20 and the shaping mechanism directly squeeze the accommodating portion 612 to shape the accommodating portion 612. In this embodiment, without air protection, the tea leaves in the packaging bag 61 to be sealed are easily crushed by the first shaping block 31, the second shaping block 32 and the bag receiving seat 20.

[0186] The first shaping block 31 and the second shaping block 32 perform a secondary seal on the shaped packaging bag 61 to be sealed, forming a first sealing area 51; the bag receiving seat 20 and the shaping mechanism move away from each other until the side of the empty portion 611 away from the accommodating portion 612 is placed between the first shaping block 31 and the second shaping block 32, and the first shaping block 31 and the second shaping block 32 seal the first sealed packaging bag 62 again, forming a second sealing area 52.

[0187] Example 6:

[0188] See also Figures 10 to 12 The material pressing block 40 is inserted into the bag opening of the packaging bag 61 to be sealed, and the material pressing block 40 applies pressure from top to bottom to squeeze the material, and then the bag receiving seat 20 and the material pressing block 40 move away from each other. It should be further explained that when the material pressing block 40 is inserted into the bag opening of the packaging bag 61 to be sealed, inert gas is injected through the gas injection port on the material pressing block 40; when the material pressing block 40 is removed from the packaging bag 61 to be sealed (i.e., the bag receiving seat 20 and the material pressing block 40 move away from each other, inert gas is injected through the gas injection port on the material pressing block 40); and / or when the material pressing block 40 applies pressure from top to bottom to squeeze the material, inert gas is injected through the gas injection port on the material pressing block 40.

[0189] In the present application, a mechanism is provided for realizing the relative movement of the bag receiving seat 20 and the first shaping block 31 and the second shaping block 32 in Examples 1 to 6, including a lifting mechanism 10. The lifting mechanism 10 is used to drive the bag receiving seat 20 and the first shaping block 31 and the second shaping block 32 to move relative to each other, so as to facilitate the shaping, exhausting and movement of the receiving portion 612 of the package to be sealed.

[0190] Of course, other forms may also be used to achieve the relative approach or distance movement between the bag receiving seat 20 and the first shaping block 31 and the second shaping block 32 .

[0191] See also Figures 1 to 21 The present application also provides a packaging bag sealing device, which is used to perform the above steps. Specifically, the packaging bag sealing device includes:

[0192] The loading mechanism is used to load the material into the packaging bag to be sealed 61. The material falls into the lower part of the packaging bag to be sealed 61 to form a receiving portion 612, and the upper part of the packaging bag to be sealed 61 is an empty portion 611;

[0193] The bag receiving seat 20 is used to support the bottom of the packaging bag 61 to be sealed;

[0194] The shaping mechanism includes a first shaping block 31 and a second shaping block 32, and the first shaping block 31 and the second shaping block 32 are arranged to reciprocate relative to each other in the horizontal direction;

[0195] The bag receiving seat 20 and the shaping mechanism are arranged to reciprocate relative to each other in the height direction;

[0196] The controller includes a computer program; when the computer program is executed by the processor, the following steps are performed:

[0197] Put the material into the packaging bag to be sealed 61;

[0198] The empty portion 611 of the packaging bag 61 to be sealed is placed horizontally between the first shaping block 31 and the second shaping block 32. The bag receiving seat 20 supports the bottom of the packaging bag 61 to be sealed. The first shaping block 31 and the second shaping block 32 are close to each other to limit the empty portion 611. The bag receiving seat 20 and the first shaping block 31 and the second shaping block 32 move relatively close to each other in the height direction. The shoulder 6112 of the accommodating portion of the packaging bag 61 to be sealed is pressed against the lower edge 3101 of the first shaping block and the lower edge 3201 of the second shaping block to shape the packaging bag 61 to be sealed.

[0199] The shaping mechanism is a mechanical device that seals and shapes product-containing packaging bags. It can be used to seal the unsealed packaging bag 61 and the first sealed packaging bag 62, and can also be used to limit the unsealed packaging bag 61 and the first sealed packaging bag 62. After the product is placed in the packaging bag, the packaging bag needs to be sealed to preserve the product, maintain product quality, prevent product loss in the bag, and prevent external air from entering the bag. This operation is completed by the shaping mechanism.

[0200] In the present application, in addition to pre-sealing and sealing, the shaping mechanism can also perform a clamping operation, that is, clamping the packaging bag 61 to be sealed to prevent gas leakage and / or limit the position of the packaging to be sealed.

[0201] The shaping mechanism is a heat-pressing sealing machine. The packaging bag 61 to be sealed is a heat-sealing bag, and the shaping mechanism performs heat-pressing on the heat-sealing bag.

[0202] The bag receiving seat 20 is used to support the packaging bag to be sealed 61, the first sealed packaging bag 62 and the second sealed packaging bag 63. The bag receiving seat 20 is made of metal, alloy or plastic.

[0203] The bag receiving seat 20 is placed below the shaping mechanism, and the bag receiving seat 20 and the shaping mechanism can move relative to each other in the height direction; that is, when the bag receiving seat 20 supports the packaging bag to be sealed 61, the first sealed packaging bag 62 and the second sealed packaging bag 63, the packaging bag to be sealed 61, the first sealed packaging bag 62 and the second sealed packaging bag 63 move relative to the shaping mechanism in the height direction to adjust the sealing or limit height.

[0204] See also Figures 14 to 21The bag receiving seat 20 includes a first side wall 21, a second side wall 22, and a bottom plate 23. The first side wall 21 and the second side wall 22 are arranged relative to each other on the bottom plate 23. The first side wall 21, the second side wall 22, and the bottom plate 23 form a groove. The groove has openings at both ends and the top. The packaging bag 61 to be sealed is placed through the top opening of the groove; that is, the packaging bag is placed in the groove. When the bag receiving seat 20 and the shaping mechanism squeeze the accommodating portion 612, the bottom of the groove and the first shaping block 31 and the second shaping block 32 press against the accommodating portion 612. The gas in the accommodating portion 612 can only expand toward the side walls of the accommodating portion 612, thereby achieving the shaping and limiting effect.

[0205] The first and second side walls 21, 22 of the bag receiving seat 20 are folded outward to facilitate receiving the bag 61 dropped onto it. Specifically, when the bag 61 falls, the bag 61 may not align with the opening at the top of the bag receiving seat 20 due to the small size of the opening. The outward folding design effectively expands the opening area, allowing the bag 61 to fall and hit the folded area, then slide into the bag receiving seat 20 under the guidance of the folded area.

[0206] In this embodiment, in order to achieve relative movement between the shaping mechanism and the bag receiving seat 20, the present application will be provided with a lifting mechanism 10, which is used to drive the shaping mechanism and / or the bag receiving seat 20; specifically, the lifting mechanism 10 is connected to the shaping mechanism and / or the bag receiving seat 20. Preferably, the lifting mechanism 10 is connected to the bag receiving seat 20, driving the bag receiving seat 20 to reciprocate up and down below the shaping mechanism. Driven by the bag receiving seat 20, the packaging bags to be sealed 61, the first sealed packaging bags 62, and the second sealed packaging bags 63 are moved, squeezed, and vented.

[0207] When the lifting mechanism 10 drives the bag receiving seat 20 to rise, the bag receiving seat 20 is relatively close to the shaping mechanism. When the lifting mechanism 10 drives the bag receiving seat 20 to descend, the bag receiving seat 20 is relatively far away from the shaping mechanism.

[0208] The controller is responsible for program flow management. According to the program pre-programmed by the user, the controller sequentially retrieves each instruction from the memory and places it in the instruction register. It determines what operation should be performed through instruction decoding (analysis), and then sends micro-operation control signals to the corresponding components according to the determined timing by operating the controller. The computer program in the embodiment can be stored in a computer-readable storage medium in the controller. The storage medium is an electronic component with data storage function, including but not limited to: RAM, ROM, disk, tape, CD, flash memory, USB flash drive, mobile hard disk, memory card, memory stick, etc., and can also be read from a server or cloud via the network.

[0209] The loading mechanism is used to load the material into the packaging bag to be sealed 61. The material falls into the lower part of the packaging bag to be sealed 61 to form a receiving portion 612, and the upper part of the packaging bag to be sealed 61 is an empty portion 611;

[0210] In this application, the controller is electrically connected to the lifting mechanism 10 and the shaping mechanism. By driving the lifting mechanism 10, the controller controls the distance between the bag receiving seat 20 and the shaping mechanism, and further controls the positions of the first sealing area 51, the second sealing area 52, and the pre-sealing area 53. By driving the shaping mechanism, the controller controls whether the shaping mechanism performs a sealing operation, a pre-sealing operation, or a clamping operation.

[0211] The above technical solution, through the setting of the lifting mechanism 10, the shaping mechanism, the bag receiving seat 20 and the controller, enables the controller to drive the shaping mechanism and the lifting mechanism 10 to realize the movement of the shaping mechanism and the bag receiving seat 20 towards or away from each other, thereby realizing the function of the shaping receiving part 612 of the packaging bag sealing device.

[0212] See also Figure 1 、 Figure 2 、 Figure 4 as well as Figures 10 to 19 In this embodiment, the shaping mechanism includes a first shaping block 31 and a second shaping block 32; the first shaping block 31 and the second shaping block 32 are arranged opposite to each other, and the first shaping block 31 and the second shaping block 32 can move closer or farther in the horizontal direction.

[0213] When the first shaping block 31 and the second shaping block 32 are separated, the bag receiving seat 20 is placed below the gap between the first shaping block 31 and the second shaping block 32. When the first shaping block 31 and the second shaping block 32 are attached, the bag receiving seat 20 is placed directly below the attachment.

[0214] The first shaping block 31 and the second shaping block 32 move on the same horizontal plane, and the movement trajectory of the first shaping block 31 or the second shaping block 32 is perpendicular to the movement trajectory of the bag receiving seat 20 .

[0215] See also Figures 5 to 9It should also be noted that the controller achieves the purpose of pre-sealing or sealing by controlling the contact time between the first shaping block 31 and the second shaping block 32. Specifically, the first shaping block 31 and the second shaping block 32 are attached to each other and stay for a first preset time, and then the first shaping block 31 and the second shaping block 32 move away from each other, and the sealing operation is performed at this time. The first shaping block 31 and the second shaping block 32 are attached to each other and stay for a second preset time, and then the first shaping block 31 and the second shaping block 32 move away from each other, and the pre-sealing operation is performed at this time. In the above process, the second preset time is less than the first preset time. Pre-sealing can make the packaging bag 61 to be sealed have a certain degree of airtightness, but because the attachment time between the first shaping block 31 and the second shaping block 32 is short, the sealing is poor, the seal is not firm, and the pre-sealed part is easy to separate.

[0216] When the first shaping block 31 and the second shaping block 32 are in contact with each other and the controller controls the first shaping block 31 and the second shaping block 32 not to be heated, the first shaping block 31 and the second shaping block 32 are only in a clamping state, thereby achieving the purpose of sealing and / or limiting.

[0217] In order to achieve the horizontal displacement of the first shaping block 31 and the second shaping block 32, the shaping mechanism also includes: a first power source 33, a first gear 34 and a first rack 35; the first gear 34 is arranged at the output end of the first power source 33, the first gear 34 is engaged with the first rack 35, and the first rack 35 is connected to the first shaping block 31.

[0218] In actual operation, the first power source 33 drives the first gear 34 to rotate, and the first gear 34 drives the first rack 35 to translate in the horizontal direction, thereby driving the horizontal displacement of the first shaping block 31 .

[0219] See also Figures 1 to 3 Similarly, the shaping mechanism also includes: a second power source 36, a second gear 37 and a second rack 38; the second gear 37 is arranged at the output end of the second power source 36, the second gear 37 is engaged with the second rack 38, and the second rack 38 is connected to the second shaping block 32.

[0220] In actual operation, the second power source 36 drives the second gear 37 to rotate, and the second gear 37 drives the second rack 38 to translate in the horizontal direction, thereby driving the second shaping block 32 to move horizontally.

[0221] In order to improve the stability of the first shaping block 31 and the second shaping block 32 during operation and prevent the first shaping block 31 and the second shaping block 32 from deviating from the preset trajectory when moving, please refer to Figures 1 to 3The shaping mechanism also includes: a first slide rail 39 and a first slider 310; the first slider 310 is two pieces, and the two first sliders 310 are respectively connected to the first shaping block 31 and the second shaping block 32; there are two first slide rails 39, each first slide rail 39 is slidably connected to a first slider 310, and each first slide rail 39 is fixed to the shell of the device.

[0222] Since the two first sliders 310 and the first slide rail 39 have the same structure and are connected to the first gear 34 or the second rack 38 in the same way, the first slide rail 39 and the first slider 310 will be described below using the first rack 35 as an example.

[0223] The first slide rail 39 and the first slider 310 are mutually adapted. The first slider 310 is slidably mounted on the first slide rail 39 and connected to the first rack 35. The first slider 310 and the first rack 35 move synchronously. In actual operation, when the first power source 33 drives the first gear 34 to rotate, the first gear 34 drives the first rack 35 to translate, thereby causing the first rack 35 to drive the first slider 310 to translate along the first slide rail 39, thereby driving the first shaping block 31 to move, thereby improving the stability of the first shaping block 31 during displacement. It should be further noted that the first slide rail 39 is parallel to the set movement trajectory of the first shaping block 31.

[0224] Similarly, in order to improve the stability of the bag receiving seat 20 during operation and prevent the bag receiving seat 20 from deviating from the preset trajectory when moving, please refer to Figures 1 to 3 The lifting mechanism 10 includes a third gear 12, a third rack 13, a third power source 11, a second slider and a second slide rail. The third rack is connected to the bag receiving seat 20, the third gear 12 is engaged with the third rack 13, and the output end of the third power source 11 is connected to the third gear 12; the second slide rail is fixed on the shell, the second slider is connected to the bag receiving seat, and the second slider is slidably set on the second slide rail.

[0225] The second slide rail is perpendicular to the first slide rail 39, and the second slider moves along the second slide rail, and the second slide rail is fixed on the housing of the device. In the present embodiment, one side of the second slider is connected with the bag receiving seat 20, and the other side of the second slider is connected with the 3rd rack 13.

[0226] The second slide rail and the second slider are adapted to each other, the second slider is slidably set on the second slide rail, the second slider is connected to the third rack 13, and the second slider and the third rack 13 move synchronously; when the third power source 11 drives the third gear 12 to rotate, the third gear 12 drives the third rack 13 to move in the height direction, so that the third rack 13 drives the second slider to move in the height direction along the second slide rail.

[0227] When the computer program is executed by the processor, the following steps are also performed:

[0228] When the first shaping block 31 and the second shaping block 32 approach each other to limit the vacant portion 611 , the first shaping block 31 and the second shaping block 32 clamp the vacant portion 611 .

[0229] When the computer program is executed by the processor, the following steps are also performed:

[0230] The first shaping block 31 and the second shaping block 32 release the empty portion 611 , and the bag receiving seat 20 and the first shaping block 31 and the second shaping block 32 continue to move closer to each other in the height direction to discharge the gas in the accommodating portion 612 .

[0231] When the computer program is executed by the processor, the following steps are also performed:

[0232] When the first shaping block 31 and the second shaping block 32 clamp the vacant portion 611 , the first shaping block 31 and the second shaping block 32 seal the packaging bag to be sealed 61 to form a first sealing area 51 .

[0233] When the computer program is executed by the processor, the following steps are also performed:

[0234] After the material is loaded into the packaging bag to be sealed 61, the first shaping block 31 and the second shaping block 32 clamp the vacant portion 611, and the first shaping block 31 and the second shaping block 32 pre-seal the packaging bag to be sealed 61 to form a pre-sealed area 53;

[0235] The first shaping block 31 is separated from the second shaping block 32;

[0236] The bag receiving seat 20 supports the bottom of the packaging bag to be sealed 61, and the first shaping block 31 and the second shaping block 32 are close to each other to limit the empty part 611. The bag receiving seat 20 and the first shaping block 31 and the second shaping block 32 move relatively close to each other in the height direction, and the shoulder 6112 of the accommodating part of the packaging bag to be sealed 61 is pressed against the lower edge 3101 of the first shaping block and the lower edge 3201 of the second shaping block to shape the packaging bag to be sealed 61.

[0237] A packaging bag sealing device also includes:

[0238] The material pressing block 40 is placed above the bag receiving seat 20, and the material pressing block 40 and the bag receiving seat 20 reciprocate relative to each other in the height direction; the material pressing block 40 is used to squeeze the material in the packaging bag 61 to be sealed;

[0239] When the computer program is executed by the processor, the following steps are also performed:

[0240] When the material is put into the packaging bag to be sealed 61 , the material pressing block 40 is inserted into the bag opening of the packaging bag to be sealed 61 to apply pressure from top to bottom to squeeze the material.

[0241] A packaging bag sealing device also includes:

[0242] The material pressing block 40 is placed above the bag receiving seat 20, and the material pressing block 40 and the bag receiving seat 20 reciprocate relative to each other in the height direction; the material pressing block 40 is used to squeeze the material in the packaging bag 61 to be sealed, and the material pressing block 40 is also provided with an inflation port for injecting inert gas into the packaging bag 61 to be sealed;

[0243] When the computer program is executed by the processor, the following steps are also performed:

[0244] When the material is put into the packaging bag 61 to be sealed, an inert gas is filled into the packaging bag 61 to be sealed.

[0245] When the computer program is executed by the processor, the following steps are also performed:

[0246] when the bag is sealed, the material pressing block 40 is extended from the bag opening of the bag to be sealed 61, and pressure is applied from top to bottom to squeeze the material, and the inert gas is filled from the inflation port 40 on the material pressing block.

[0247] When the computer program is executed by the processor, the following steps are also performed:

[0248] When the material briquette 40 extends into the packaging bag 61 to be sealed, inert gas is filled from the inflation port on the material briquette 40; when the material briquette 40 applies pressure to the material, inert gas is filled from the inflation port on the material briquette 40; and / or when the material briquette 40 is removed from the packaging bag 61 to be sealed, inert gas is filled from the inflation port on the material briquette 40.

[0249] When the computer program is executed by the processor, the following steps are also performed:

[0250] After the packaging bag to be sealed 61 is shaped, the bag receiving seat 20 and the first shaping block 31 and the second shaping block 32 move away from each other in the height direction; the first shaping block 31 and the second shaping block 32 approach each other to clamp the empty portion 611, and the packaging bag to be sealed 61 is sealed to form the second sealing area 52.

[0251] When the computer program is executed by the processor, the following steps are also performed:

[0252] The bag receiving seat 20 can move up and down in the height direction, and the first shaping block 31 and the second shaping block 32 are fixedly arranged in the height direction.

[0253] See also Figures 1 to 4In this embodiment, it also includes: a material pressing block 40, which is placed above the bag receiving seat 20, and the material pressing block 40 reciprocates in the direction of approaching or moving away from the bag receiving seat 20, that is, the material pressing block 40 moves in the height direction; the material pressing block 40 is used to squeeze the material in the packaging bag 61 to be sealed.

[0254] The material pressing block 40 is used to touch and shape one end of the packaging bag to adapt to the cross-section of the packaging bag 61 to be sealed when it is expanded; that is, when the packaging bag 61 to be sealed is expanded, the material pressing block 40 can penetrate into the packaging bag 61 to be sealed and touch the material in the packaging bag 61 to be sealed, thereby achieving the purpose of preliminary compression of the material.

[0255] When the packaging bag 61 to be sealed is placed on the bag receiving seat 20, the material pressing block 40 moves vertically downward, enters the packaging bag 61 to be sealed and presses the material in the packaging bag 61 to be sealed. After the pressing is completed, the material pressing block 40 is pulled out from the packaging bag 61 to be sealed, completing the preliminary shaping operation.

[0256] During food production and packaging, in order to ensure the quality of the food, the producer needs to exhaust the air in the packaging bag 61 to be sealed as much as possible, and then seal the packaging bag 61 to be sealed.

[0257] See also Figures 1 to 4 In this embodiment, an inflation port is provided at the bottom of the material pressing block 40, and the inflation port is used to introduce inert gas into the packaging bag 61 to be sealed. The inflation port is connected to the external device through a pipeline. The inert gas in the external device can be discharged from the inflation port through the pipeline and enter the packaging bag 61 to be sealed.

[0258] In this embodiment, the material pressing block 40 has four states: first, the material pressing block 40 is placed outside the packaging bag 61 to be sealed; second, the material pressing block 40 extends into the packaging bag 61 to be sealed; third, the material pressing block 40 applies pressure to the material; and fourth, the material pressing block 40 is removed from the packaging bag 61 to be sealed.

[0259] In the above four cases, the material briquette 40 can be used to pass inert gas into the packaging bag 61 to be sealed; of course, in some embodiments, the operator can choose the state or states in which the material briquette 40 is to be used to pass inert gas into the packaging bag 61 to be sealed.

[0260] Specifically, when the material pressing block 40 is extended, pressurized and / or removed, an inert gas is introduced into the packaging bag to be sealed 61. Since the material pressing block 40 contacts the side of the packaging bag to be sealed 61, the gas will cause the bag body of the packaging bag to be sealed 61 to expand outward, so that the gas is squeezed out from the gap between the material pressing block 40 and the side of the packaging bag to be sealed 61.

[0261] The inert gas in this application includes nitrogen, carbon dioxide, rare gases and gases that do not react with materials. The inert gas is used to prevent food from spoiling.

[0262] In actual use, when the material pressing block 40 is extended into the package to be sealed, the material pressing block 40 is pulled out from the package to be sealed and / or the material pressing block 40 touches the material, the gas generator continuously introduces inert gas into the bag-sealing packaging bag through the air guide channel, and the inert gas discharges the air in the package bag to be sealed 61.

[0263] To sum up, the complete process of the present application is as follows: the packaging bag 61 containing the material to be sealed is placed on the bag receiving seat 20, the material pressing block 40 moves downward in the height direction and extends into the packaging bag 61 to be sealed, and then the material pressing block 40 continues to extend into the packaging bag 61 to be sealed; then the material pressing block 40 presses the material in the packaging bag 61 to be sealed, and an inert gas (preferably nitrogen) is introduced; then the material pressing block 40 moves in a direction away from the bag receiving seat 20.

[0264] The bag receiving seat 20 and the shaping mechanism move relative to each other until the lower edge of the first shaping block 31, the lower edge of the second shaping block 32, and the upper edge 6111 of the receiving portion of the unsealed packaging bag 61 are aligned. The first shaping block 31 and the second shaping block 32 clamp the vacant portion 611, and the bag receiving seat 20 and the shaping mechanism move toward each other, squeezing the receiving portion 612.

[0265] The first shaping block 31 and the second shaping block 32 release the packaging bag 61 to be sealed, and the bag receiving seat 20 and the shaping mechanism move closer together again, expelling the air from the accommodating portion 612. The first shaping block 31 and the second shaping block 32 then seal the packaging bag 61 to be sealed, forming the first sealing area 51. The bag receiving seat 20 and the shaping mechanism move away from each other until the end of the vacant portion 611, away from the accommodating portion 612, is positioned between the first shaping block 31 and the second shaping block 32. The first shaping block 31 and the second shaping block 32 then seal the first sealed package, forming the second sealing area 52.

[0266] The packaging bag sealing devices of the above-mentioned embodiments can be applied to packaging equipment, such as tea packaging machines.

[0267] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A method for sealing a packaging bag, characterized in that: Including steps: Put the material into the packaging bag to be sealed, the material falls into the lower part of the packaging bag to be sealed to form a accommodating part, and the upper part of the packaging bag to be sealed is an empty part; The empty portion of the packaging bag to be sealed is placed horizontally between the first shaping block and the second shaping block, the bag receiving seat supports the bottom of the packaging bag to be sealed, the first shaping block and the second shaping block approach each other to limit the empty portion, the bag receiving seat and the first shaping block and the second shaping block move closer to each other in the height direction, and the shoulder of the accommodating portion of the packaging bag to be sealed is pressed against the lower edges of the first shaping block and the second shaping block to shape the packaging bag to be sealed; When the first shaping block and the second shaping block are close to each other to limit the vacant portion, the first shaping block and the second shaping block clamp the vacant portion; After shaping the packaging bag to be sealed, the method further comprises the following steps: The first shaping block and the second shaping block release the empty portion, and the bag receiving seat and the first shaping block and the second shaping block continue to move closer to each other in the height direction to discharge the gas in the accommodating portion; The first shaping block and the second shaping block are sealing blocks; After the material is loaded into the packaging bag to be sealed, the first shaping block and the second shaping block clamp the empty portion, and the first shaping block and the second shaping block pre-seal the packaging bag to be sealed to form a pre-sealed area; The first shaping block is separated from the second shaping block; The bag receiving seat supports the bottom of the packaging bag to be sealed, the first shaping block and the second shaping block are close to each other to limit the empty part, and the bag receiving seat and the first shaping block and the second shaping block move relatively close to each other in the height direction, pressing the shoulder of the accommodating part of the packaging bag to be sealed against the lower edge of the first shaping block and the second shaping block to shape the packaging bag to be sealed.

2. The method for sealing a packaging bag according to claim 1, wherein: The first shaping block and the second shaping block are sealing blocks. When the first shaping block and the second shaping block clamp the empty portion, the first shaping block and the second shaping block seal the packaging bag to be sealed to form a first sealing area.

3. The packaging bag sealing method according to claim 1, characterized in that: After the material is put into the packaging bag to be sealed, the material pressing block is inserted into the bag opening of the packaging bag to be sealed, and pressure is applied from top to bottom to squeeze the material.

4. The method for sealing a packaging bag according to claim 1, wherein: After the material is loaded into the packaging bag to be sealed, an inert gas is filled into the packaging bag to be sealed, and then the packaging bag to be sealed is shaped.

5. The method for sealing a packaging bag according to claim 4, wherein: After the material is loaded into the packaging bag to be sealed, the material pressing block is inserted into the bag opening of the packaging bag to be sealed, and pressure is applied from top to bottom to squeeze the material, and inert gas is filled into the packaging bag to be sealed from the inflation port on the material pressing block.

6. The method for sealing a packaging bag according to claim 5, wherein: The inert gas is filled into the packaging bag to be sealed from the inflation port on the material briquette specifically includes: when the material briquette applies pressure to the material, the inert gas is filled into the packaging bag to be sealed from the inflation port on the material briquette and / or when the material briquette is moved out of the packaging bag to be sealed, the inert gas is filled into the packaging bag to be sealed from the inflation port on the material briquette.

7. The method for sealing a packaging bag according to claim 1, wherein: The first shaping block and the second shaping block are sealing blocks; After the packaging bag to be sealed is shaped, the packaging bag to be sealed falls on the bag receiving seat, and the bag receiving seat and the first shaping block and the second shaping block move away from each other in the height direction; the first shaping block and the second shaping block approach each other to clamp the empty part, and the packaging bag to be sealed is sealed to form a second sealing area.

8. The method for sealing a packaging bag according to any one of claims 1 to 7, characterized in that: The bag receiving seat can move up and down in the height direction, and the first shaping block and the second shaping block are fixedly arranged in the height direction.

9. A packaging bag sealing device, characterized in that: include: A loading mechanism, which is used to load materials into the packaging bag to be sealed, so that the materials fall into the lower part of the packaging bag to be sealed to form a receiving portion, and the upper part of the packaging bag to be sealed is an empty portion; A bag receiving seat, which is used to support the bottom of the packaging bag to be sealed; A shaping mechanism, the shaping mechanism comprising a first shaping block and a second shaping block, wherein the first shaping block and the second shaping block are arranged to reciprocate relative to each other in a horizontal direction; The bag receiving seat and the shaping mechanism are arranged to reciprocate relative to each other in the height direction; A controller comprising a computer program; when the computer program is executed by a processor, the following steps are implemented: Put the materials into the packaging bags to be sealed; The empty portion of the packaging bag to be sealed is placed horizontally between the first shaping block and the second shaping block, the bag receiving seat supports the bottom of the packaging bag to be sealed, the first shaping block and the second shaping block approach each other to limit the empty portion, the bag receiving seat and the first shaping block and the second shaping block move closer to each other in the height direction, and the shoulder of the accommodating portion of the packaging bag to be sealed is pressed against the lower edges of the first shaping block and the second shaping block to shape the packaging bag to be sealed; The first shaping block and the second shaping block are sealing blocks; when the computer program is executed by the processor, the following steps are further implemented: After the material is loaded into the packaging bag to be sealed, the first shaping block and the second shaping block clamp the empty portion, and the first shaping block and the second shaping block pre-seal the packaging bag to be sealed to form a pre-sealed area; The first shaping block is separated from the second shaping block; The bag receiving seat supports the bottom of the packaging bag to be sealed, the first shaping block and the second shaping block are close to each other to limit the empty part, and the bag receiving seat and the first shaping block and the second shaping block move relatively close to each other in the height direction, pressing the shoulder of the accommodating part of the packaging bag to be sealed against the lower edge of the first shaping block and the second shaping block to shape the packaging bag to be sealed.

10. The packaging bag sealing device according to claim 9, characterized in that: When the computer program is executed by a processor, the following steps are further implemented: When the first shaping block and the second shaping block are close to each other to limit the empty portion, the first shaping block and the second shaping block clamp the empty portion.

11. The packaging bag sealing device according to claim 10, characterized in that: When the computer program is executed by a processor, the following steps are further implemented: The first shaping block and the second shaping block release the empty portion, and the bag receiving seat and the first shaping block and the second shaping block continue to move closer to each other in the height direction to discharge the gas in the accommodating portion.

12. The packaging bag sealing device according to claim 9, characterized in that: The first shaping block and the second shaping block are sealing blocks; when the computer program is executed by the processor, the following steps are further implemented: When the first shaping block and the second shaping block clamp the empty portion, the first shaping block and the second shaping block seal the packaging bag to be sealed to form a first sealing area.

13. The packaging bag sealing device according to claim 9, characterized in that: Also includes: A material pressing block is placed above the bag receiving seat, and the material pressing block and the bag receiving seat reciprocate relative to each other in the height direction, and the material pressing block is used to squeeze the material in the packaging bag to be sealed; When the computer program is executed by a processor, the following steps are further implemented: After the material is put into the packaging bag to be sealed, the material pressing block is inserted into the bag opening of the packaging bag to be sealed, and pressure is applied from top to bottom to squeeze the material.

14. The packaging bag sealing device according to claim 9, characterized in that: Also includes: A material pressing block is placed above the bag receiving seat, and the material pressing block and the bag receiving seat reciprocate relative to each other in the height direction. The material pressing block is used to squeeze the material in the packaging bag to be sealed, and an inflation port is also provided on the material pressing block, and the inflation port is used to fill the packaging bag to be sealed with inert gas; When the computer program is executed by a processor, the following steps are further implemented: After the material is put into the packaging bag to be sealed, inert gas is filled into the packaging bag to be sealed.

15. The packaging bag sealing device according to claim 14, characterized in that: When the computer program is executed by a processor, the following steps are further implemented: After the material is loaded into the packaging bag to be sealed, the material pressing block is inserted into the bag opening of the packaging bag to be sealed, and pressure is applied from top to bottom to squeeze the material, and inert gas is filled in from the inflation port on the material pressing block.

16. The packaging bag sealing device according to claim 15, characterized in that: When the computer program is executed by a processor, the following steps are further implemented: The inert gas is filled into the packaging bag to be sealed from the inflation port on the material briquette specifically includes: when the material briquette applies pressure to the material, the inert gas is filled into the packaging bag to be sealed from the inflation port on the material briquette and / or when the material briquette is moved out of the packaging bag to be sealed, the inert gas is filled into the packaging bag to be sealed from the inflation port on the material briquette.

17. The packaging bag sealing device according to claim 9, characterized in that: When the computer program is executed by a processor, the following steps are further implemented: After the packaging bag to be sealed is shaped, the bag receiving seat and the first shaping block and the second shaping block move away from each other in the height direction; the first shaping block and the second shaping block approach each other to clamp the empty part, seal the packaging bag to be sealed, and form a second sealing area.

18. The packaging bag sealing device according to any one of claims 9 to 17, characterized in that: When the computer program is executed by a processor, the following steps are further implemented: The bag receiving seat can move up and down in the height direction, and the first shaping block and the second shaping block are fixedly arranged in the height direction.

19. A packaging device, characterized in that: The packaging equipment comprises the packaging bag sealing device according to any one of claims 9 to 18.

20. The packaging device according to claim 19, characterized in that The packaging equipment is a tea packaging machine.

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