Packaging machine

Abstract

The present disclosure relates to a packaging machine, which includes: a frame, a bag storage device, a bag taking device, a bag clamping device, a material feeding device, a vacuum pumping device and a sealing device mounted on the frame. Such a setting makes the whole machine more compact, reduces the floor area. In addition, the various structures cooperate closely to shorten the production cycle and improve the production efficiency.

Description

Technical Field

[0001] The present disclosure relates to the technical field of packaging, and more particularly, to a packaging machine. Background Art

[0002] As consumers have higher and higher requirements for the products they use, every link from the quality of the products to the quality of the packaging cannot be underestimated. However, at present, the structure of the entire packaging machine is not compact enough, occupies a large area, and has a long production cycle. Summary of the Invention

[0003] The purpose of the present disclosure is to provide a packaging machine, which has the advantages of a compact structure, a small volume, high production efficiency, and high product quality.

[0004] An embodiment of the present disclosure provides a packaging machine, which includes: a frame, a bag storage device, a bag taking device, a bag clamping device, a blanking device, a vacuum pumping device, and a sealing device mounted on the frame; wherein,

[0005] The bag storage device has a storage tank for storing packaging bags;

[0006] The bag taking device is located below the storage tank, and the bag taking device includes a bag taking driving mechanism and a bag taking suction cup connected to the bag taking driving mechanism. The bag taking suction cup can suck the packaging bag at the lowermost end of the storage tank under the drive of the bag taking driving mechanism and move the packaging bag to the bag clamping position;

[0007] The bag clamping device includes a station conversion motor and a jaw structure connected to the station conversion motor. The jaw structure can be switched between the bag clamping position and the sealing position under the drive of the station conversion motor. The jaw structure includes a clamping driving mechanism and a left jaw group and a right jaw group connected to the clamping driving mechanism. The left jaw group and the right jaw group can clamp the left and right ends of the packaging bag on the bag taking device at the bag clamping position under the drive of the clamping driving mechanism, and can also move towards each other under the drive of the clamping driving mechanism after clamping to open the bag;

[0008] The blanking device includes a blanking driving mechanism and a blanking hopper connected to the blanking driving mechanism. The blanking hopper is located above the bag clamping position. The bottom end of the blanking hopper can move downward into the opened packaging bag under the drive of the blanking driving mechanism; after the blanking is completed, the blanking driving mechanism can drive the blanking hopper to move upward away from the packaging bag, and the jaw structure can move to the sealing position;

[0009] The vacuum device includes a vacuum drive mechanism and a suction pipe connected to the vacuum drive mechanism, wherein the suction pipe is located above the sealing position and can be driven by the vacuum drive mechanism to move downward into the packaging bag. Thereafter, the left clamping jaw group and the right clamping jaw group can be driven by the clamping drive mechanism to move away from each other to flatten the packaging bag.

[0010] The sealing device is arranged at the sealing position, and the sealing device includes a sealing drive mechanism and a sealing strip assembly connected to the sealing drive mechanism. The sealing strip assembly can be pressed together under the drive of the sealing drive mechanism, and then vacuuming is started. After the vacuuming is completed, the vacuuming drive mechanism drives the straw to move upward and away from the packaging bag. After that, the sealing strip assembly can continue to be pressed together under the drive of the sealing drive mechanism to achieve the sealing action.

[0011] The technical solution provided by the present disclosure can achieve the following beneficial effects:

[0012] In the packaging machine provided by the present disclosure, the bag storage device, bag taking device, bag clamping device, material unloading device, vacuum device and sealing device are more compact in structure, which reduces the occupied area. In addition, the various structures are closely coordinated to shorten the production cycle and improve production efficiency.

[0013] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification, are used to explain the principles of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0015] Figures 1 to 3 Schematic diagrams of the structure of the packaging machine according to an embodiment of the present disclosure at different viewing angles are shown respectively.

[0016] Figure 4 A schematic structural diagram of a bag storage device according to an embodiment of the present disclosure is shown.

[0017] Figure 5 and Figure 6 Schematic diagrams of the structure of the bag taking device described in an embodiment of the present disclosure at different viewing angles are shown respectively.

[0018] Figure 7 A schematic structural diagram of the bag clamping device described in an embodiment of the present disclosure at a first viewing angle is shown.

[0019] Figure 8 Shows a schematic structural diagram of the bag clamping device according to an embodiment of the present disclosure from a second perspective.

[0020] Figure 9 Shows Figure 8 An enlarged schematic structural diagram of part A shown in

[0021] Figure 10 Shows a schematic structural diagram of the bag clamping device according to an embodiment of the present disclosure from a third perspective.

[0022] Figure 11 Shows Figure 10 An enlarged schematic structural diagram of part B shown in

[0023] Figure 12 Shows a schematic structural diagram of the auxiliary bag opening device according to an embodiment of the present disclosure.

[0024] Figure 13 Shows a schematic structural diagram of the blanking device according to an embodiment of the present disclosure.

[0025] Figure 14 Shows a schematic structural diagram of the sub-packaging and weighing device according to an embodiment of the present disclosure.

[0026] Figure 15 Shows a schematic structural diagram of the desiccant feeding device according to an embodiment of the present disclosure.

[0027] Figure 16 Shows a schematic structural diagram of the material patting device according to an embodiment of the present disclosure.

[0028] Figure 17 Shows a schematic structural diagram of the vacuum pumping device according to an embodiment of the present disclosure.

[0029] Figure 18 Shows a schematic structural diagram of the sealing device according to an embodiment of the present disclosure.

[0030] Figure 19 Shows a schematic structural diagram of the finished product output device according to an embodiment of the present disclosure.

[0031] Figure 20 Shows a schematic structural diagram of the zipper opening device according to an embodiment of the present disclosure from a first perspective.

[0032] Figure 21 Shows Figure 20 A schematic structural diagram of the zipper opening device shown in

[0033] Figure 22 Shows a schematic structural diagram of the zipper opening device according to another embodiment of the present disclosure from a first perspective.

[0034] Figure 23 shows Figure 22 a schematic structural view of the shown zipper opening device from a second perspective.

[0035] Figure 24 shows Figure 22 a schematic structural view of the first guide groove in the shown zipper opening device. Detailed implementation manners

[0036] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. Like reference numerals in the figures denote like or similar structures, and thus their detailed description will be omitted.

[0037] Although relative terms such as "upper", "lower", "front", and "rear" are used in this specification to describe the relative relationship of one device of an icon to another device, these terms are used in this specification only for convenience, for example, according to the directions of the examples described in the accompanying drawings. It can be understood that if the device of the icon is flipped so that its upper and lower, front and rear are reversed, the device described as "upper" will become the device "lower", and the device described as "front" will become the device "rear". When a certain structure is "on" another structure, it may mean that a certain structure is integrally formed on another structure, or that a certain structure is "directly" disposed on another structure, or that a certain structure is "indirectly" disposed on another structure through another structure.

[0038] The terms "a", "an", "the", and "said" are used to indicate the existence of one or more elements / components / etc.; the terms "comprising" and "having" are used to mean an open inclusion and mean that there may be additional elements / components / etc. in addition to the listed elements / components / etc.; the terms "first" and "second", etc. are used only as labels and are not a limitation on the quantity of their objects.

[0039] An embodiment of the present disclosure provides a packaging machine, as Figures 1 to 3 shown, which includes a frame 10, a bag storage device 20, a bag taking device 30, a bag clamping device 40, a blanking device 50, a vacuum pumping device 60, and a sealing device 70 mounted on the frame 10, but is not limited thereto. The packaging machine may further include a zipper opening device 80, a sub-packaging and weighing device 90, a finished product output device 100, and a desiccant supply device 120.

[0040] The following will describe each device of the packaging machine in the embodiment of the present disclosure in detail with reference to the accompanying drawings.

[0041] Reference Figure 4 As shown, the bag storage device 20 has a storage tank for storing packaging bags. Specifically, the bag storage device 20 includes a bag storage mounting plate 201, a first limiting member 202a, a second limiting member 202b, a link assembly 203, an adjustment driving member 204, and a length adjustment member 205.

[0042] The bag storage mounting plate 201 is configured to be fixedly connected to the frame 10 of the packaging machine. For example, the bag storage mounting plate 201 can be connected to the frame 10 of the packaging machine by riveting, welding, etc. This bag storage mounting plate 201 can be a frame structure. For example, the bag storage mounting plate 201 can include two first plates 2011 that are opposite and spaced apart in the width direction X and two second plates 2012 that are opposite and spaced apart in the length direction Y. The two first plates 2011 and the two second plates 2012 are connected end to end to form a frame structure.

[0043] Among them, the bag storage mounting plate 201 is provided with a first fixing portion 206 and a second fixing portion 207. This first fixing portion 206 is arranged below the bag storage mounting plate 201 and is used to connect to the bag taking structure located below the bag storage device 20 and fixed to the frame; the second fixing portion 207 is arranged above the bag storage mounting plate 201 and is used to be fixedly connected to the frame.

[0044] Specifically, two first fixing portions 206 can be provided and installed below a first plate 2011 and are arranged at intervals in the length direction Y; two second fixing portions 207 can be provided and installed above the other first plate 2011 and are arranged at intervals in the length direction Y. Such a design can improve the installation stability of the bag storage mounting plate 201 and the frame.

[0045] In this embodiment, by setting the bag storage mounting plate 201 as a frame structure, while ensuring the installation stability of the bag storage mounting plate 201, the weight of the bag storage device 20 can be reduced. In addition, it is also convenient for the bag taking structure below to take bags from below the bag storage mounting plate 201, so as to reduce the bag taking path of the bag taking structure, reasonably plan the space at the packaging machine, make it compact, and while reducing the occupied space, it is also convenient for transportation.

[0046] The first limiting member 202a and the second limiting member 202b can be arranged at intervals in the width direction X. The first limiting member 202a and the second limiting member 202b are used to limit the width size of the packaging bag. Among them, the structures of the first limiting member 202a and the second limiting member 202b are the same. Specifically, both the first limiting member 202a and the second limiting member 202b include a width support portion 2021, a width connection portion 2022, and a width limiting portion 2023.

[0047] Among them, the width support part 2021 is slidably connected to the bag storage mounting plate 201 in the width direction X, that is, the width support part 2021 can slide relative to the bag storage mounting plate 201 along the width direction X. That is to say, the distance between the width support parts 2021 among the first limiting member 202a and the second limiting member 202b is adjustable, which can match packaging bags of different widths, thereby improving the versatility of the bag storage device 20.

[0048] Specifically, the opposite ends of the width support part 2021 are respectively slidably connected to two second plates 2012. The second plates 2012 are provided with sliding holes extending in the width direction X. A protrusion may be provided at the bottom of the width support part 2021, and the protrusion can move in the sliding hole in the width direction X.

[0049] The width connecting part 2022 is fixedly connected to the width support part 2021 and is arranged in the length direction Y with the width limiting part 2023. As Figure 4 shown, the width connecting part 2022 and the width limiting part 2023 may be arranged at intervals in the length direction Y.

[0050] A bag storage space may be formed between the width limiting parts 2023 of the first limiting member 202a and the second limiting member 202b. The distance between the width limiting parts 2023 of the first limiting member 202a and the second limiting member 202b in the width direction X may be the width of the packaging bag. When the packaging bag is located in the bag storage space, the two edges of the packaging bag in the width direction X may be supported on the width support parts 2021 of the first limiting member 202a and the second limiting member 202b.

[0051] Refer to Figure 4 shown, the width limiting part 2023 may include two limiting rods arranged at intervals in the length direction Y. Such an arrangement can limit the width of the packaging bag while reducing the contact area between the packaging bag and the width limiting part 2023, thereby reducing the friction force during the bag taking process, which is convenient for the subsequent bag taking structure to take the bag from below.

[0052] The link assembly 203 may include a first hinge rod 2031, a second hinge rod 2032, a slider 2033 and at least one vertical guide rod 2034. The two ends of the first hinge rod 2031 are respectively hinged to the slider 2033 and the width connecting part 2022 of the first limiting member 202a. For example, a face bearing is used for hinging. The two ends of the second hinge rod 2032 are respectively hinged to the slider 2033 and the width connecting part 2022 of the second limiting member 202b. For example, a face bearing is used for hinging. The vertical guide rod 2034 is fixedly connected to the bag storage mounting plate 201, and the slider 2033 is slidably connected to the vertical guide rod 2034 in the height direction Z;

[0053] The adjustment driving member 204 can be connected to the width connecting portion 2022 of the first limiting member 202a to drive the width connecting portion 2022 of the first limiting member 202a to move in the width direction X. The width connecting portion 2022 of the second limiting member 202b can move in the width direction X together with the width connecting portion 2022 of the first limiting member 202a under the action of the link assembly 203, specifically, it can move in the direction opposite to the moving direction of the width connecting portion 2022 of the second limiting member 202b. That is to say, under the action of the link assembly 203, the adjustment driving member 204 can adjust the width connecting portions 2022 of the first limiting member 202a and the second limiting member 202b to move synchronously in the width direction X. Specifically, the width connecting portions 2022 of the first limiting member 202a and the second limiting member 202b can move synchronously in the direction of approaching or separating from each other under the combined action of the adjustment driving member 204 and the link assembly 203.

[0054] In this embodiment, by providing the link assembly 203, this embodiment can use one adjustment driving member 204 to achieve the synchronous movement of the width support portions 2021 of the first limiting member 202a and the second limiting member 202b, so as to reduce the cost while realizing the adjustable width. Specifically, under the action of the link assembly 203, the width support portions 2021 of the first limiting member 202a and the second limiting member 202b can move in the width direction X in the direction of approaching or separating from each other, which can ensure that the center of the bag storage space does not shift with the width change. That is to say, it can ensure that the center of the bag storage space is constant, thus facilitating the subsequent bag-taking structure to perform positioning bag-taking and ensuring the bag-taking efficiency and stability of the subsequent bag-taking structure.

[0055] Based on the foregoing structural content, the specific width adjustment method of this embodiment is as follows:

[0056] 1) The process of increasing the width of the bag storage space: Using the adjustment driving member 204 to drive the width connecting portion 2022 of the first limiting member 202a to move in the width direction X in the direction away from the width connecting portion 2022 of the second limiting member 202b. At this time, the first hinge rod 2031 swings in the direction close to the bag storage mounting plate 201 to drive the slider 2033 to move in the height direction Z relative to the vertical guide rod 2034 in the direction close to the bag storage mounting plate 201, so that the second hinge rod 2032 swings in the direction close to the bag storage mounting plate 201 to push the width connecting portion 2022 of the second limiting member 202b to move in the width direction X in the direction away from the width connecting portion 2022 of the first limiting member 202a, that is: realizing the width connecting portions 2022 of the first limiting member 202a and the second limiting member 202b to move away from each other in the width direction X;

[0057] 2) Process of reducing the width of the bag storage space: The adjustment driving member 204 is used to drive the width connecting portion 2022 of the first limiting member 202a to move in the X width direction towards the width connecting portion 2022 of the second limiting member 202b. At this time, the first hinge rod 2031 swings away from the bag storage mounting plate 201, so as to drive the slider 2033 to move away from the bag storage mounting plate 201 in the Z height direction relative to the vertical guide rod 2034, thereby causing the second hinge rod 2032 to swing away from the bag storage mounting plate 201, so as to push the width connecting portion 2022 of the second limiting member 202b to move in the X width direction towards the width connecting portion 2022 of the first limiting member 202a, that is: the width connecting portions 2022 of the first limiting member 202a and the second limiting member 202b are moved towards each other in the X width direction.

[0058] For example, the adjustment driving member 204 of this embodiment includes a lead screw 2041, and this lead screw 2041 is threadedly connected to the width connecting portion 2022 of the first limiting member 202a. This lead screw 2041 can rotate, and the width connecting portion 2022 of the first limiting member 202a can move in the X width direction when the lead screw 2041 rotates. For example: when the lead screw 2041 rotates clockwise, the width connecting portions 2022 of the first limiting member 202a and the second limiting member 202b can be moved towards each other in the X width direction, and when rotating counterclockwise, the width connecting portions 2022 of the first limiting member 202a and the second limiting member 202b can be moved away from each other in the X width direction, etc.

[0059] In this embodiment, the adjustment driving member 204 can be automatically driven. For example, the adjustment driving member 204 can also include a driving motor 2042, and this driving motor 2042 is connected to the lead screw 2041 to drive the lead screw 2041 to rotate. However, it is not limited thereto, and the adjustment driving member 204 can also be manually driven, such as manually rotating the lead screw 2041.

[0060] Reference Figure 4 As shown, two guiding mounting blocks 208 arranged at intervals in the X width direction can be provided on the bag storage mounting plate 201. A horizontal guide rod 209 is provided between the two guiding mounting blocks 208, and both ends of the horizontal guide rod 209 are fixedly connected to the two guiding mounting blocks 208 respectively; the first limiting member 202a and the second limiting member 202b are located between the two guiding mounting blocks 208, and each width connecting portion 2022 is slidably connected to the horizontal guide rod 209, and the width connecting portion 2022 can move relative to the horizontal guide rod 209 in the X width direction. By providing the horizontal guide rod 209, the sliding accuracy of the width connecting portion 2022 can be ensured, and thus the width adjustment accuracy can be ensured.

[0061] Specifically, the first end of the lead screw 2041 is located outside the guiding and mounting block 208, and its second end passes through the guiding and mounting block 208 and is threadedly connected to the width connecting portion 2022 of the first limiting member 202a.

[0062] Optionally, two horizontal guiding rods 209 are provided and arranged at intervals along the length direction Y; two vertical guiding rods 2034 are provided and arranged at intervals along the width direction X, and the vertical guiding rods 2034 are located between the two horizontal guiding rods 209; the lead screw 2041 is located between the two horizontal guiding rods 209 to ensure guiding balance and stability.

[0063] It should be noted that the aforementioned driving motor 2042 can be located outside the guiding and mounting block 208, the driving motor 2042 is connected to the first end of the lead screw 2041, and can drive the lead screw 2041 to rotate.

[0064] The length adjusting member 205 may further include a length supporting portion 2051 and a length limiting portion 2052. The length supporting portion 2051 is slidably connected to the bag storage mounting plate 201, and the length supporting portion 2051 can slide relative to the bag storage mounting plate 201 along the length direction Y; the length limiting portion 2052 is fixedly connected to the length supporting portion 2051, and the length limiting portion 2052 is located between the width supporting portion 2021 of the first limiting member 202a and the width supporting portion 2021 of the second limiting member 202b. By providing the length adjusting member 205, the length of the bag storage space can be adjusted, and in addition, the stacked packaging bags in the bag storage space can be restricted to prevent them from falling over.

[0065] Among them, the length limiting portion 2052 is centrally arranged between the width supporting portion 2021 of the first limiting member 202a and the width supporting portion 2021 of the second limiting member 202b, which is convenient for positioning the center of the bag storage space.

[0066] Optionally, the length limiting portion 2052 is a limiting plate, and the width of this limiting plate is the dimension in the width direction X, which can ensure the contact area with the stacked packaging bags, thereby further preventing the stacked packaging bags in the bag storage space from falling over.

[0067] In addition, the top end of the limiting plate forms a guiding inclined surface inclined away from the link assembly 203, which is convenient for smoothly placing the stacked packaging bags from the upper space into the bag storage space.

[0068] Among them, the opposite ends of the length supporting portion 2051 are respectively slidably connected to the two first plates 2011. The first plates 2011 are provided with sliding holes extending in the length direction Y, and the length supporting portion 2051 may be provided with protrusions slidably disposed in the sliding holes, and these protrusions can move in the sliding holes in the length direction Y, such as Figure 4As shown, the length support portion 2051 can be located below the width support portion 2021.

[0069] Refer to Figure 5 and Figure 6 As shown, the bag taking device 30 is located below the storage tank of the bag storage device 20. The bag taking device 30 may include a bag taking mounting base 301, a bag taking driving mechanism, and a bag taking suction cup 302. The bag taking mounting base 301 is arranged below the bag storage device 20 and is connected to the frame 10. The bag taking suction cup 302 and the bag taking driving mechanism are mounted on the bag taking mounting base 301, and the bag taking suction cup 302 is connected to the bag taking driving mechanism. The bag taking suction cup 302 can suck the packaging bag at the lowermost end of the storage tank under the drive of the bag taking driving mechanism and move the packaging bag to the bag clamping position.

[0070] Specifically, the bag taking mounting base 301 has a bag taking guide groove 303. The bag taking guide groove 303 has a bag taking vertical section 3031 and a bag taking horizontal section 3032 arranged at 90°. The bag taking horizontal section 3032 is arc-transitionally connected to the bag taking vertical section 3031.

[0071] The bag taking driving mechanism includes a bag taking motor 304, a gear transmission assembly 305, a bag taking swing rod 306, a bag taking bearing 307, and a suction cup mounting base 308. The bag taking motor 304 is connected to the bag taking swing rod 306 through the gear transmission assembly 305. This gear transmission assembly 305 includes a large gear and a small gear that mesh with each other. The small gear is connected to the output shaft of the bag taking motor 304, and the large gear is connected to the bag taking swing rod 306. The bag taking swing rod 306 can swing under the drive of the bag taking motor 304, and the bag taking swing rod 306 is provided with a swing rod guide groove 3061. The bag taking bearing 307 is fixedly installed on the suction cup mounting base 308, and the bag taking bearing 307 is slidably installed in the bag taking guide groove 303 and the swing rod guide groove 3061. The bag taking bearing 307 can slide along the track of the bag taking guide groove 303 under the swing of the bag taking swing rod 306. For example, it reciprocates on the bag taking horizontal section 3032 and the bag taking vertical section 3031.

[0072] Among them, the bag taking suction cup 302 is fixedly connected to the suction cup mounting base 308 and can cooperate with the bag storage device 20 and the bag clamping device 40 when the bag taking bearing 307 slides along the track of the bag taking guide groove 303.

[0073] In this embodiment, when the bag taking bearing 307 slides in the bag taking vertical section 3031, it drives the bag taking suction cup 302 to move up and down to cooperate with the bag storage device 20 for bag taking, or cooperate with the zipper opening device 80 to realize pre-opening of the bag. When the bag taking bearing 307 slides from the bag taking vertical section 3031 to the bag taking horizontal section 3032, the bag taking suction cup 302 rotates 90°. When the bag taking suction cup 302 slides in the bag taking horizontal section 3032, it can cooperate with the bag clamping device 20 and the auxiliary bag opening device mentioned later to realize the bag opening process.

[0074] As Figures 7 to 11 shown, the bag clamping device 40 may include a bag clamping mount 401, a station conversion motor 402, and at least one set of jaw structures. Among them, the bag clamping mount 401 may be fixedly connected to the frame 10 of the packaging machine; the station conversion motor 402 may be disposed on the bag clamping mount 401; the jaw structure may be connected to the station conversion motor 402, and the jaw structure can be switched between a bag clamping position and a sealing position under the action of the station conversion motor 402.

[0075] The jaw structure may include a clamping drive mechanism and a jaw group. The jaw group includes a left jaw group 405a and a right jaw group 405b connected to the clamping drive mechanism. The left jaw group 405a and the right jaw group 405b can clamp the left and right ends of the packaging bag on the bag taking device 30 at the bag clamping position under the drive of the clamping drive mechanism, and can also move closer to each other under the drive of the clamping drive mechanism after clamping to open the bag.

[0076] Specifically, the clamping drive mechanism may include a clamping motor 403, a telescopic motor 404, a first transmission structure, a second transmission structure, a first pushing structure, and a second pushing structure.

[0077] The clamping motor 403 may be connected to the first pushing structure through the first transmission structure. This clamping motor 403 can be used to drive the first pushing structure to move back and forth. For example, the first transmission structure may include a first gear (not shown in the figure) and a first rack 4060. The first gear is connected to the clamping motor 403 to be able to rotate under the drive of the clamping motor 403. The first rack 4060 extends in the front-rear direction and meshes with the first gear. Among them, the first rack 4060 is connected to the first pushing structure, and the first rack 4060 can move in the front-rear direction when the first gear rotates to drive the first pushing structure to move in the front-rear direction.

[0078] Both the left jaw group 405a and the right jaw group 405b include a jaw seat 4050, a fixed jaw 4051 fixed on the jaw seat 4050, and a movable jaw 405 an installed on the jaw seat 4050 rotatably. The movable jaw 4052 is rotatably connected to the first pushing structure to be able to rotate in a direction close to or away from the fixed jaw 4051 when the first pushing structure moves back and forth. Among them, when the movable jaw 4052 rotates in a direction close to the fixed jaw 4051, the process of clamping the packaging bag can be realized, and when the movable jaw 4052 rotates in a direction away from the fixed jaw 4051, the process of releasing the packaging bag can be realized.

[0079] The telescopic motor 404 is connected to the second pushing structure through the second transmission structure to drive the second pushing structure to move back and forth. The second pushing structure is connected to the jaw seats 4050 of the left jaw group 405a and the right jaw group 405b. When the second pushing structure moves back and forth, the left jaw group 405a and the right jaw group 405b move towards or away from each other.

[0080] For example, the second transmission structure may include a second gear (not shown in the figure) and a second rack (not shown in the figure). The second gear is connected to the telescopic motor 404 to be able to rotate under the drive of the telescopic motor 404. The second rack extends in the front-back direction and meshes with the second gear. Wherein, the second rack is connected to the second pushing structure. When the second gear rotates, the second rack can move in the front-back direction to drive the second pushing structure to move in the front-back direction, so as to drive the left jaw group 405a and the right jaw group 405b to move towards or away from each other.

[0081] Based on the above structure, when the bag-taking device supplies the packaging bag to the bag-clamping position, the workbench conversion motor 402 can be used to drive the jaw structure to the bag-clamping position. When the jaw structure is at the bag-clamping position, the clamping motor 403 can drive the first pushing structure to move forward through the first transmission structure, so that the movable jaw 4052 moves towards the fixed jaw 4051, so that the left jaw group 405a and the right jaw group 405b clamp both ends of the packaging bag; after the left jaw group 405a and the right jaw group 405b clamp both ends of the packaging bag, while the bag-opening suction cup of the auxiliary bag-opening device sucks and opens the bag mouth, the telescopic motor 404 can drive the first pushing structure to move forward through the second transmission structure, so that the left jaw group 405a and the right jaw group 405b move towards or away from each other, that is: both ends of the bag are simultaneously retracted to achieve the purpose of opening the bag mouth. At this time, the feeding process can be carried out, that is: filling the packaging bag with the material to be packaged. After the material is filled, the workbench conversion motor 402 drives it from the jaw position to the sealing position, and then the vacuum suction pipe can be inserted into the bag for vacuum treatment. After the vacuum treatment, the telescopic motor 404 can drive the second pushing structure to move backward through the second transmission structure, so that the left jaw group 405a and the right jaw group 405b move away from each other to flatten the bag mouth for the sealing device to perform the sealing treatment.

[0082] In a specific embodiment, the first driving structure may include a first driving guide groove plate 4070, a first jaw pushing block 4071, a first jaw pushing seat 4072, a first intermediate pushing block 4074, a first guide rod 4075 and a first swinging pushing plate 4076. The first driving guide groove plate 4070 is connected to the first transmission structure. The bearing arranged at the lower end of the first jaw pushing block 4071 is placed in the guide groove of the first driving guide groove plate 4070. A compression spring 4073 is installed between the first jaw pushing block 4071 and the first jaw pushing seat 4072. The bearing at the lower end of the first intermediate pushing block 4074 is placed in the guide groove of the first jaw pushing seat 4072. The first intermediate pushing block 4074 is connected to the first swinging pushing plate 4076 through the first guide rod 4075. A bearing is installed below the movable jaw 4052, and the bearing below the movable jaw 4052 is placed in the guide groove of the first swinging pushing plate 4076.

[0083] Specifically, the fixed jaw 4051 and the movable jaw 4052 are located above the jaw seat 4050, and the first swinging pushing plate 4076 is located below the jaw seat 4050. A swinging connecting plate 4077 is further arranged below the jaw seat 4050. The swinging connecting plate 4077 is fixedly connected to the movable jaw 4052 through a pin shaft. The swinging connecting plate 4077 is provided with a bearing placed in the guide groove of the first swinging pushing plate 4076.

[0084] Among them, the first driving guide groove plate 4070 can drive the first swinging pushing plate 4076 to move in the front-rear direction through the first jaw pushing block 4071, the first jaw pushing seat 4072, the first intermediate pushing block 4074 and the first guide rod 4075 connected in sequence, so that the movable jaw 4052 swings.

[0085] Taking the clamping process as an example for detailed description: The first pushing guide groove plate 4070 can be pushed forward driven by the clamping motor 403 and the first transmission structure. The bearing arranged at the lower end of the first jaw pushing block 4071 is placed in the guide groove of the first pushing guide groove plate 4070. The forward push of the first pushing guide groove plate 4070 drives the first jaw pushing block 4071 to be pushed forward. A compression spring 4073 is installed between the first jaw pushing block 4071 and the first jaw pushing seat 4072, and the compression spring 4073 is pre-compressed. Therefore, the forward push of the first jaw pushing block 4071 drives the first jaw pushing seat 4072 to be pushed forward. The bearing at the lower end of the first intermediate pushing block 4074 is placed in the guide groove of the first jaw pushing seat 4072. The forward push of the first jaw pushing seat 4072 drives the first intermediate pushing block 4074 to be pushed forward. The first intermediate pushing block 4074 makes the first swing pushing plate 4076 be pushed forward through the first guide rod 4075. The bearing installed below the swing connecting plate 4077 is placed in the guide groove of the first swing pushing plate 4076. The forward push of the first swing pushing plate 4076 makes the swing connecting plate 4077 swing, thereby driving the movable jaw 4052 to swing towards the fixed jaw 4051. When the movable jaw 4052 swings to fit the fixed jaw 4051, the compression spring 4073 between the first jaw pushing block 4071 and the first jaw pushing seat 4072 is further compressed to clamp the two ends of the bag by the jaws; it should be understood that the process of releasing the bag can be understood as a reset process, that is: driving the first pushing guide groove plate 4070 to retreat through the clamping motor 403 and the first transmission structure, thereby driving the first jaw pushing block 4071, the first jaw pushing seat 4072, the first intermediate pushing block 4074, the first guide rod 4075 and the first swing pushing plate 4076 to retreat, and then making the movable jaw 4052 swing away from the fixed jaw 4051 to realize the release of the bag.

[0086] In the embodiment of the present disclosure, the guide grooves of the first pushing guide groove plate 4070, the first jaw pushing seat 4072, and the first swing pushing plate 4076 all extend in the left - right direction. The guide grooves of the first pushing guide groove plate 4070, the first jaw pushing seat 4072, and the first swing pushing plate 4076 are mainly for automatically adjusting the positions of the jaws when adjusting the distance between the left jaw group 405a and the right jaw group 405b (i.e., bag width adjustment).

[0087] In a specific embodiment, the second pushing structure may further include a second pushing guide groove plate 4080, a second jaw pushing block 4081, a second jaw pushing seat 4082, a second guide rod 4083, a left swinging jaw 4084, a right swinging jaw 4085, a left swinging push plate 4086, and a right swinging push plate 4087. The second pushing guide groove plate 4080 is connected to the second transmission structure. The bearing arranged on the second jaw pushing block 4081 is placed in the guide groove of the second pushing guide groove plate 4080. The second jaw pushing block 4081 and the second jaw pushing seat 4082 are connected by the second guide rod 4083. The rear bearings arranged on the left swinging jaw 4084 and the right swinging jaw 4085 are both placed in the guide groove of the second jaw pushing seat 4082. The front bearing arranged on the left swinging jaw 4084 is placed in the guide groove of the left swinging push plate 4086. The front bearing arranged on the right swinging jaw 4085 is placed in the guide groove of the right swinging push plate 4087. The left swinging push plate 4086 is fixedly connected to the jaw seat 4050 of the left jaw group 405a, and the right swinging push plate 4087 is fixedly connected to the jaw seat 4050 of the right jaw group 405b.

[0088] Among them, the second pushing guide groove plate 4080 can push the second jaw pushing seat 4082 to move in the front-rear direction through the sequentially connected second jaw pushing block 4081 and the second guide rod 4083, so that the left swinging jaw 4084 and the right swinging jaw 4085 swing, and then the left swinging push plate 4086 and the right swinging push plate 4087 move closer to or away from each other.

[0089] In this embodiment, after the two ends of the bag are clamped, the bag mouth is assisted to open front and back under the action of the bag taking device and the auxiliary bag opening device. At this time, the left and right ends of the bag must be retracted simultaneously to achieve the purpose of opening the bag mouth. Specifically, when the telescopic motor 404 drives the second pushing guide groove plate 4080 to move back and forth through the second transmission structure, the bearing arranged on the second jaw pushing block 4081 is placed in the guide groove of the second pushing guide groove plate 4080. The second jaw pushing block 4081 moves back and forth under the drive of the second pushing guide groove plate 4080, and drives the second jaw pushing seat 4082 to also move back and forth through the second guide rod 4083. When the second jaw pushing seat 4082 moves back and forth, it can drive the left swinging jaw 4084 and the right swinging jaw 4085 to swing, so that the left swinging push plate 4086 and the right swinging push plate 4087 move closer to or away from each other, and then the left jaw group 405a and the right jaw group 405b move closer to or away from each other.

[0090] Among them, the guide grooves of the second pushing guide groove plate 4080 and the second jaw pushing seat 4082 both move in the left-right direction.

[0091] Based on the foregoing, it can be seen that the adjustment of the bag width is completely achieved by the telescopic motor 404 controlling the position of the second pushing guide groove plate 4080, that is, the adjustment of the bag width is automated. The main function of the guide groove of the second pushing guide groove plate 4080 and the guide groove of the second jaw pushing seat 4082 is that when the jaw structure moves left and right, the transmission system of the telescopic motor 404 remains fixed, which not only reduces the weight but also ensures the electrical circuit failure caused by the movement.

[0092] In a specific embodiment, two sets of jaw structures can be provided and arranged at intervals in the left-right direction; both sets of jaw structures are connected to the station conversion motor 402. Among them, the two sets of jaw structures share the bag clamping position, and the sealing positions of the two sets of jaw structures are arranged on the left and right sides of the bag clamping position and are symmetrically distributed centered. In this way, when the first set of jaw structures seals at the sealing position, the second set of jaw structures can cooperate with the bag taking device to clamp the bag at the bag clamping position. When the first set of jaw structures completes the sealing, it can move from the sealing position to the bag clamping position under the drive of the station conversion motor 402 to cooperate with the bag taking device to clamp the bag, while the second set of jaw structures moves from the bag clamping position to another sealing position for sealing, which can improve the packaging efficiency.

[0093] Based on the bag clamping device 40 provided in the embodiments of the present disclosure, it can cooperate with the bag taking device to clamp at the bag clamping position, and cooperate with the blanking device to complete blanking. After completing the blanking, it can also cooperate with the sealing device to seal at the sealing position. By setting this bag clamping device 40, the structure of the entire packaging machine can be made more compact, the floor area can be reduced, and the height of the bag clamping device 40 can be coordinated to shorten the production cycle.

[0094] As Figure 12 shown, the packaging machine may further include the auxiliary bag opening device 110 mentioned above that cooperates with the bag taking device 30 and the jaw device 40. The auxiliary bag opening device 110 is not marked in the overall machine drawing. The auxiliary bag opening device 110 may include an auxiliary driving mechanism and an auxiliary suction cup 1101 connected to the auxiliary driving mechanism. The auxiliary suction cup 1101 can be on the same horizontal plane as the bag taking suction cup 302 when the bag taking suction cup 302 is at the bag clamping position, and the auxiliary suction cup 1101 can suck the bag mouth and move backward away from the bag taking suction cup 302 under the drive of the auxiliary driving mechanism while the left jaw group 405a and the right jaw group 405b move closer to each other to open the bag, and the bag taking suction cup 302 can suck the bag mouth and move forward away from the auxiliary suction cup 1101 under the drive of the bag taking driving mechanism to open the bag.

[0095] In this embodiment, the auxiliary driving mechanism may include an auxiliary motor 1102 and an auxiliary gear-rack transmission mechanism. The auxiliary motor 1102 is connected to the auxiliary suction cup 1101 through the auxiliary gear-rack transmission mechanism. It should be understood that the auxiliary gear-rack transmission mechanism includes an auxiliary gear 1103 and an auxiliary rack 1104. The auxiliary gear 1103 is connected to the output shaft of the auxiliary motor 1102, the auxiliary rack 1104 meshes with the auxiliary gear 1103, and is also connected to the auxiliary suction cup 1101.

[0096] Reference Figure 13 As shown, the blanking device 50 includes a blanking driving mechanism and a blanking hopper 501 connected to the blanking driving mechanism. The blanking hopper 501 is located above the bag clamping position. The bottom end of the blanking hopper 501 can move downward under the drive of the blanking driving mechanism into the opened packaging bag, ensuring that the material is accurately conveyed into the packaging bag. After the blanking is completed, the blanking driving mechanism can drive the blanking hopper 501 to move upward away from the packaging bag, and the clamping jaw structure can move to the sealing position, that is, move the open packaging bag filled with the material to the sealing position for sealing.

[0097] For example, the blanking driving mechanism may include a blanking motor 502 and a blanking synchronous belt mechanism 503. The blanking motor 502 is connected to the blanking hopper 501 through the blanking synchronous belt mechanism 503 to drive the blanking hopper 501 to move up and down.

[0098] Wherein, a detachable support bag claw 504 is provided at the lower end of the blanking hopper 501. When the blanking hopper 501 moves downward, the support bag claw 504 first contacts the packaging bag to slowly open the bag mouth of the packaging bag.

[0099] In this embodiment, the blanking device further includes a material poking push head 505, a material poking motor 506, and a material poking synchronous belt mechanism 507. The material poking motor 506 is connected to the material poking push head 505 through the material poking synchronous belt mechanism 507 to drive the material poking push head 505 to move up and down to poke the material in the blanking hopper 501 to avoid material blockage.

[0100] Specifically, the material poking push head 505 is connected to the material poking synchronous belt mechanism 507 through a material poking seat 508. Among them, the material poking push head 505 is detachably connected to the material poking seat 508 to facilitate the replacement of the material poking push head 505.

[0101] It should be noted that for materials that are difficult to freely fall into the bag, the blanking hopper 501 and the material poking push head 505 move downward to push the material into the bag.

[0102] Reference Figure 14As shown, the dispensing and weighing device 90 includes a dispensing mounting plate 901 fixedly connected to the frame 10, a linear vibrating trough 902, a spiral vibrating disk 903, a weighing hopper 904, and a storage hopper 905 mounted on the dispensing mounting plate 901; the linear vibrating trough 902 has a material receiving cavity 9021 for bearing the gravity of the material in the silo, and a discharge port is provided on one side of the material receiving cavity 9021 close to the spiral vibrating disk 903.

[0103] The discharge port of the linear vibrating trough 902 corresponds to the central material receiving area of the spiral vibrating disk 903, and the linear vibrating trough 902 is used to intermittently replenish the spiral vibrating disk 903 with materials. The weighing hopper 904 is opposite to the discharge port of the spiral vibrating disk 903. The weighing hopper 904 is used to weigh the weight of the materials. After the weighing hopper 904 completes weighing, it opens its own discharge port. The material receiving port of the storage hopper 905 is located below the discharge port of the weighing hopper 904, and the discharge port of the storage hopper 905 is located above the discharge hopper 501. The discharge port of the storage hopper 905 is used to open when the materials stored in itself meet the preset weight.

[0104] In this embodiment, the linear vibrating trough 902 is used to intermittently replenish the spiral vibrating disk 903 with materials, mainly bearing the gravity of the materials in the silo, so as to make the discharge of the spiral vibrating disk 903 uniform and ensure the accuracy of weighing by the weighing hopper 904. After the weighing hopper 904 completes weighing, the materials directly fall into the storage hopper 905 for storage, so that the weighing hopper 904 can continue the weighing work before the storage hopper 905 discharges materials, improving the overall working speed of weighing.

[0105] It should be understood that the linear vibrating trough 902 in this embodiment can be a vibrating trough with an overall rectangular shape.

[0106] The desiccant feeding device 120 is located above the bag clamping position. The desiccant feeding device includes a conveying structure and a storage structure.

[0107] Reference Figure 15 As shown, the conveying structure may include a driving part 12010, a driving roller (not marked in the figure), a driven roller (not marked in the figure), and a conveyor belt 12011. The driving part 12010 is connected to the driving roller, the driven roller is arranged at an interval from the driving roller, and the conveyor belt 12011 is sleeved on the driven roller and the driving roller. Among them, the driving part 12010 can drive the driving roller to rotate, so as to drive the conveyor belt 12011 and the driven roller to rotate, so that the desiccant packets on the conveyor belt 12011 are conveyed to a specified position, for example: conveyed into an opened packaging bag.

[0108] The storage structure can be arranged above the conveyor belt 12011, and the storage structure includes a first fixing plate 12012, a second fixing plate 12013 and at least one intermediate plate. The connection between the intermediate plate and the second fixing plate 12013 is opposite and spaced in a direction intersecting the conveying direction X of the conveyor belt 12011. The intermediate plate is located between the first fixing plate 12012 and the second fixing plate 12013 and encloses a storage cavity 12014 with them. The storage cavity 12014 is used for storing stacked desiccant packets, and a supply outlet for the desiccant packets to pass through is formed between the lower end of the intermediate plate and the upper end of the conveyor belt 12011.

[0109] Wherein, resistance pieces are provided at the lower ends of at least one intermediate plate. The friction between the resistance pieces and the desiccant packets is greater than the friction between two desiccant packets, and the friction between the conveyor belt 12011 and the desiccant packets is greater than the friction between two desiccant packets.

[0110] In this embodiment, by arranging a storage structure on the conveying structure of the desiccant feeding device, multiple stacked desiccant packets can be stored in this storage structure, and then the lowermost desiccant packet is fed forward through the conveying structure for feeding into the opened packaging bag. In this way, compared with the scheme of manually putting desiccant packets into the packaging bag one by one, the labor cost can be reduced and the feeding efficiency can be improved.

[0111] In addition, since the friction between the resistance pieces and the desiccant packets is greater than the friction between two desiccant packets, therefore, by arranging resistance pieces at the lower ends of the intermediate plates of the storage structure, that is, arranging resistance pieces at the supply outlet of the storage structure, the stacked desiccant packets can be rubbed open to ensure that the desiccant packets are separated in single packets when conveyed to the front end, so as to relieve the situation that multiple feeding phenomena are prone to occur in the automatic feeding of desiccant packets, that is, ensure that one desiccant packet is put into each packaging bag, reduce costs, and relieve the situation of overweight during subsequent product quality inspection.

[0112] For example, the resistance pieces can be silicone sheets, and the conveyor belt can be a belt. In this way, while increasing the friction with the desiccant packets, the situation of the desiccant packets being punctured can be avoided, ensuring product quality.

[0113] Optionally, at least one intermediate plate can include a connecting intermediate plate 12015. The connecting intermediate plate 12015 is located on the same side of the connecting intermediate plate and the second fixing plate 12013 and is fixedly connected to both of them to form a U-shaped groove structure as a whole. A storage cavity 12014 is provided in this U-shaped groove structure. For example, the connecting intermediate plate 12015 and the connecting intermediate plate and the second fixing plate 12013 can be integrally connected to ensure the overall stability of the storage structure.

[0114] Wherein, a resistance piece may be provided at the lower end of the connecting intermediate plate 12015. That is to say, when the conveyor belt 12011 conveys the desiccant packets to the supply outlet formed between the connecting intermediate plate 12015 and the conveyor belt 12011, the resistance piece at the lower end of the connecting intermediate plate 12015 can apply frictional force to the desiccant packets. Since the frictional force between the resistance piece and the desiccant packets is greater than the frictional force between two desiccant packets, the stacked desiccant packets can be rubbed open, ensuring that the desiccant packets are separated individually when conveyed to the front end, thereby alleviating the situation of multiple feeding that is likely to occur in the automatic feeding of desiccant packets.

[0115] Exemplarily, inwardly bent limiting flanges 12016 are provided on one side of the connecting intermediate plate 12015 and the second fixing plate 12013 away from the connecting intermediate plate 12015. These limiting flanges 12016 are used to ensure that multiple desiccant packets are stacked stably in the storage cavity 12014, avoiding the overall dumping of the desiccant packets in the storage cavity 12014 when the conveyor belt 12011 withdraws the bottom desiccant packet.

[0116] Furthermore, at least one intermediate plate of this embodiment may further include an adjusting intermediate plate 12017. This adjusting intermediate plate 12017 is movably installed on the connecting intermediate plate 12015. The adjusting intermediate plate 12017, the connecting intermediate plate 12015, the second fixing plate 12013 and the limiting flange 12016 enclose the storage cavity 12014. That is to say, the stacked desiccant packets are located between the adjusting intermediate plate 12017, the connecting intermediate plate 12015, the second fixing plate 12013 and the limiting flange 12016. The overall dumping of the stacked desiccant packets can be restricted by the adjusting intermediate plate 12017, the connecting intermediate plate 12015, the second fixing plate 12013 and the limiting flange 12016.

[0117] Wherein, the adjusting intermediate plate 12017 is movably installed on the connecting intermediate plate 12015, and it can move in the conveying direction X towards or away from the connecting intermediate plate 12015 to adjust the distance between the adjusting intermediate plate 12017 and the limiting flange 12016. In this way, desiccant packets of different lengths (this length refers to the dimension in the conveying direction X) can be adapted, improving the adaptability of the desiccant supply device.

[0118] Specifically, during the conveying process of the conveyor belt 12011, the desiccant packets can first pass through the supply port formed between the adjusting intermediate plate 12017 and the conveyor belt 12011, and then pass through the supply port formed between the connecting intermediate plate 12015 and the conveyor belt 12011 to be sent out of the storage structure and conveyed into the opened packaging bag.

[0119] For example, the adjustment intermediate plate 12017 and the connection intermediate plate 12015 can be movably connected by means of a screw or other structures, but are not limited thereto, and other methods can also be adopted according to specific circumstances.

[0120] Optionally, a resistance piece can be provided at the lower end of the adjustment intermediate plate 12017. That is to say, during the conveyance of the conveyor belt 12011, the desiccant packets can be first rubbed open by the resistance piece at the lower end of the adjustment intermediate plate 12017, and then rubbed open by the resistance piece at the lower end of the connection intermediate plate 12015. This can ensure that the desiccant packets are in a single-packet separated state when conveyed to the front end, thereby alleviating the situation of multiple discharges that easily occur in the automatic discharge of desiccant packets.

[0121] Furthermore, the distance between the resistance piece at the lower end of the adjustment intermediate plate 12017 and the conveyor belt 12011 can be smaller than the distance between the resistance piece at the lower end of the connection intermediate plate 12015 and the conveyor belt 12011, so as to further ensure that the desiccant packets are in a single-packet separated state when conveyed to the front end.

[0122] It should be understood that the distance between the resistance piece at the lower end of the connection intermediate plate 12015 and the conveyor belt 12011 can be equal to the thickness of the desiccant packet or slightly smaller than the thickness of the desiccant packet, as long as it can ensure the smooth conveyance of a single desiccant packet.

[0123] Among them, the storage structure can further include a width adjustment plate 12018, which is movably installed on the connection intermediate plate. A storage cavity 12014 is formed among the width adjustment plate 12018, the adjustment intermediate plate 12017, the second fixing plate 12013 and the limiting flange 12016; that is to say, the stacked desiccant packets are located among the adjustment intermediate plate 12017, the second fixing plate 12013, the width adjustment plate 12018 and the limiting flange 12016, and the overall tipping of the stacked desiccant packets can be restricted by the adjustment intermediate plate 12017, the width adjustment plate 12018, the second fixing plate 12013 and the limiting flange 12016.

[0124] Among them, the width adjustment plate 12018 is movably installed on the first fixing plate 12012, and it can move in a direction close to or away from the first fixing plate 12012 to adjust the distance between the width adjustment plate 12018 and the second fixing plate 12013, so as to adapt to desiccant packets of different widths (this width refers to the dimension in the direction perpendicular to the conveying direction X), and improve the adaptability of the desiccant supply device.

[0125] For example, the width adjustment plate 12018 and the first fixing plate 12012 can be movably connected by means of a screw 12019 or other structures, but are not limited thereto, and other methods can also be adopted according to specific circumstances.

[0126] In this embodiment, the driving unit 12010 may include a driving motor 120101 and a gear transmission mechanism 120102. The driving motor 120101 drives the driving roller to rotate intermittently through the gear transmission mechanism 120102, thereby driving the conveyor belt 12011 to intermittently pull out the lowermost package of desiccant packets forward for feeding. The intermittent time can be adjusted in coordination with the previous process on the packaging machine.

[0127] In this embodiment, the gear transmission mechanism will not be elaborated too much. As long as it can cooperate with the previous process to enable the intermittent transmission of the conveyor belt 12011.

[0128] In this embodiment, limiting baffles 12020 are provided on the relative two sides of the conveyor belt 12011 in the direction intersecting the conveying direction X. The limiting baffles 12020 can be used to limit the deviation of the desiccant packets during the conveying process and ensure that the desiccant packets are transported into the packaging bag.

[0129] In this embodiment, refer to Figure 16 As shown, the packaging machine further includes a material patting device 130. The material patting device 130 includes a patting motor 1301 and a patting plate 1302. The patting motor 1301 is connected to the patting plate 1302 through a rack and pinion mechanism 1303, so as to be able to drive the patting plate 1302 to move up and down repeatedly after the feeding device 50 completes feeding, so as to pat the packaging bag filled with materials.

[0130] It should be noted that the patting position can be adjusted by controlling the up and down position of the patting plate 1302 by the patting motor 1301 according to the length of the packaging bag.

[0131] After the above-mentioned lower hopper 501 descends to the in-place position, the storage hopper 905 of the sub-packaging and weighing device 90 performs the feeding action. The material enters the packaging bag through the lower hopper 501. If desiccant needs to be added, the desiccant feeding device 120 feeds the desiccant at the same time. Then the lower material patting device 130 operates to make the material enter the bottom of the packaging bag as much as possible.

[0132] Refer to Figure 17 As shown, the vacuum pumping device 60 may include a vacuum pumping drive mechanism and a suction pipe 601 connected to the vacuum pumping drive mechanism. The suction pipe 601 is located above the sealing position. The suction pipe 601 can descend into the packaging bag under the drive of the vacuum pumping drive mechanism. After that, the left jaw group 405a and the right jaw group 405b can move away from each other under the drive of the clamping drive mechanism to flatten the packaging bag.

[0133] It should be noted that this vacuum pumping drive mechanism may include a vacuum pumping motor 602 and a vacuum pumping synchronous belt mechanism 603. The vacuum pumping motor 602 drives the suction pipe 601 to move up and down through the vacuum pumping synchronous belt mechanism 603. Among them, the suction pipe 601 can be a vacuum pumping pipe, which is connected to a vacuum pump through a gas path, that is, nitrogen filling is carried out by connecting to the nitrogen filling through the gas path.

[0134] In the embodiment, two sets of the aforementioned jaw structures can be provided and respectively correspond to two sealing positions. Therefore, two sets of vacuum pumping devices can be provided, and the suction pipe 601 of each set of vacuum pumping devices is located above a sealing position.

[0135] The sealing device 70 is arranged at the sealing position. The sealing device 70 includes a sealing drive mechanism and a sealing strip assembly connected to the sealing drive mechanism. The sealing strip assembly can be pressed under the drive of the sealing drive mechanism. Then, the vacuum pumping device 60 is used to pump vacuum. After the vacuum pumping is completed, the vacuum pumping drive mechanism drives the suction pipe 601 to move upward away from the packaging bag. Then, the sealing strip assembly can continue to be pressed under the drive of the sealing drive mechanism to complete the sealing action.

[0136] Reference Figure 18 As shown, the sealing drive mechanism includes a sealing motor (not shown in the figure), a first sealing gear 701 connected to the sealing motor, a second sealing gear 702 located below the first sealing gear 701 and coaxially arranged with the first sealing gear 701, and a first sealing rack 703 and a second sealing rack 704 located on opposite sides in the radial direction of the second sealing gear 702 and meshing with the second sealing gear 702. The first sealing rack 703 is fixedly connected to the first sealing push plate 705, and the second sealing rack 704 is fixedly connected to the second sealing push plate 706 through a rigid shaft 713. Specifically, the rear end of the rigid shaft 713 is connected to the second sealing rack 704 through a shaft seat 714, and the front end of the rigid shaft 713 is connected to the second sealing push plate 706.

[0137] The sealing strip includes a first vacuum sealing strip 707 and a second vacuum sealing strip 708 arranged oppositely and a first sealing strip 709 and a second sealing strip 710 arranged oppositely.

[0138] The first vacuum sealing strip 707 is connected to the side of the first sealing push plate 705 close to the second sealing push plate 706 through a vacuum sealing guide rod 711 with a compression spring, and the second vacuum sealing strip 708 is connected to the side of the second sealing push plate 706 close to the first sealing push plate 705 through another vacuum sealing guide rod 711 with a compression spring.

[0139] The first sealing strip 709 is connected to the side of the first sealing push plate 705 close to the second sealing push plate 706 through a sealing guide rod 712 with a compression spring, and the second sealing strip 710 is connected to the side of the second sealing push plate 706 close to the first sealing push plate 705 through another sealing guide rod 712 with a compression spring.

[0140] When not in the vacuum pumping and sealing state, the first sealing strip 709 retracts relative to the first vacuum sealing strip 707, and the second sealing strip 710 retracts relative to the second vacuum sealing strip 708.

[0141] The sealing device drives the first sealing gear 701 to rotate by a sealing motor. A second sealing gear 702 is coaxially arranged below the first sealing gear 701. The second sealing gear 702 is smaller than the first sealing gear 701. Among them, the second sealing gear 702 drives the first sealing rack 703 and the second sealing rack 704 to move in opposite directions repeatedly. The second sealing rack 704 drives the second sealing push plate 706 to move repeatedly through a rigid shaft 713, and the first sealing rack 703 drives the first sealing push plate 705 to move repeatedly.

[0142] After the suction pipe 601 of the vacuum pumping device 60 is inserted into the packaging bag, the first sealing push plate 705 and the second sealing push plate 706 move towards each other to realize the first vacuum sealing strip 707 and the second vacuum sealing strip 708 being pressed together first. The compression spring on the vacuum sealing guide rod 711 is used to provide the clamping force required for pressing. When the vacuum is over, the suction pipe 601 is withdrawn from the packaging bag through the vacuum pumping drive mechanism, and the first sealing push plate 705 and the second sealing push plate 706 move further towards each other, thereby realizing the pressing of the first sealing strip 709 and the second sealing strip 710. The compression spring on the sealing guide rod 712 is used to provide the pressing force required for sealing.

[0143] In the embodiment, two sets of the aforementioned jaw structures and vacuum pumping devices can be provided, and two sets of sealing devices 70 can be provided. Each set of sealing devices 70 is correspondingly arranged at a sealing position.

[0144] Reference Figure 19 As shown, the finished product output device 100 can include a finished product drive motor (not shown in the figure), a finished product synchronous belt transmission mechanism 1001, and a finished product conveying flat belt 1002. The finished product conveying flat belt 1002 is inclined. The bottom end of the finished product conveying flat belt 1002 is arranged close to the sealing position, and the top end of the finished product conveying flat belt 1002 is arranged far from the sealing position. The finished product drive motor drives the sealed packaging finished products on the finished product conveying flat belt 1002 to be lifted from the bottom end of the finished product conveying flat belt 1002 to the top end of the finished product conveying flat belt 1002 and then output to the outside of the frame through the finished product synchronous belt transmission mechanism 1001.

[0145] Reference Figures 20 to 24As shown, the zipper opening device 80 can be installed on the machine frame 10 and is located below the storage tank. The zipper opening device may include a fixing plate 8010 for fixedly connecting with the machine frame 10 of the packaging machine, a zipper opening driving mechanism, a bag opening gripper mechanism, and a pre-opening suction cup 8013 installed on the fixing plate 8010. The zipper opening driving mechanism is connected to the bag opening gripper mechanism and the pre-opening suction cup 8013. The pre-opening suction cup 8013 is in an avoidance position during the process that the bag-taking suction cup 302 mentioned above moves towards the storage tank to take the bag. After the bag-taking suction cup 302 finishes taking the bag, the pre-opening suction cup 8013 can move from the avoidance position to the pre-opening position under the drive of the zipper opening driving mechanism. The bag-taking suction cup 302 moves upward for a certain distance and then downward under the drive of the bag-taking driving mechanism to cooperate with the pre-opening suction cup to pre-open the zippered packaging bag. After the pre-opening is achieved, the bag opening gripper mechanism can clamp both ends of the bag mouth of the zippered packaging bag under the action of the zipper opening driving mechanism and then directly open the zipper on the bag mouth. When the pre-opening suction cup 8013 is reset to the avoidance position under the drive of the zipper opening driving mechanism, the bag-taking suction cup 302 rotates 90° under the drive of the bag-taking driving mechanism to move the packaging bag to the bag clamping position.

[0146] Specifically, the zipper opening driving mechanism includes a zipper opening driving motor 8011, a first transmission member, and a second transmission member; the first transmission member is connected to the zipper opening driving motor 8011 and is used for rotating under the drive of the zipper opening driving motor 8011; the second transmission member has a first position, a second position, a third position, and a fourth position arranged in sequence in the up-down direction. The second transmission member is movably connected to the first transmission member and is used for moving in the up-down direction when the first transmission member rotates; that is to say, when the first transmission member rotates, the second transmission member can move in the up-down direction in the fifth position, the first position, the second position, the third position, and the fourth position in sequence.

[0147] It should be noted that the fifth position, the first position, the second position, the third position, and the fourth position mentioned here refer to a fixed point on the second transmission member. This fixed point can move in the fifth position, the first position, the second position, the third position, and the fourth position in sequence when the first transmission member moves up and down as a whole.

[0148] For example, the fifth position can be the lowest position to which the second transmission member moves (i.e., the position located below), and the fourth position can be the highest position to which the second transmission member moves (i.e., the position located at the top).

[0149] The bag-opening jaw mechanism may include a jaw structure, a first mating structure, and a second mating structure that cooperate with a second transmission member; both the first mating structure and the second mating structure are movably connected to the fixing plate 8010. That is to say, the first mating structure and the second mating structure can move back and forth relative to the fixing plate 8010. The back-and-forth movement mentioned here does not mean that the first mating structure and the second mating structure can move to the front side and the back side of the fixing plate 8010, but that the first mating structure and the second mating structure move on the same side of the fixing plate 8010 and can move in a direction closer to or farther from the fixing plate 8010. Moving in a direction closer to the fixing plate 8010 can be understood as moving backward, and moving in a direction farther from the fixing plate 8010 can be understood as moving forward.

[0150] Among them, the first mating structure may have a bag-out position and a bag-in position that are oppositely arranged in the front-back direction. That is to say, when the first mating structure moves back and forth relative to the fixing plate 8010, it can be switched between the bag-in position and the bag-out position. It should be noted that the bag-in position can be understood as the position where the inner jaws of the jaw structure extend into the packaging bag, and the bag-out position is the position where the inner jaws of the jaw structure extend out of the packaging bag. The second mating structure has a clamping position and a clamping initial position that are oppositely arranged in the front-back direction. That is to say, when the second mating structure moves back and forth relative to the fixing plate 8010, it can be switched between the clamping initial position and the clamping position. It should be noted that the clamping initial position can be understood as the position where the jaw structure does not start clamping the packaging bag, and the clamping position refers to the position where the jaw structure can clamp the packaging bag.

[0151] The jaw structure includes a movable jaw group 8012a movably connected to the first mating structure and a fixed jaw group 8012b fixedly connected to the first mating structure. Both the movable jaw group 8012a and the fixed jaw group 8012b include a swinging jaw 80120 and a fixed jaw 80121. The swinging jaws 80120 of the movable jaw group 8012a and the fixed jaw group 8012b are movably connected to the second mating structure.

[0152] Among them, when the second transmission member is switched between the first position and the second position, it can push the first mating structure to be switched between the bag-out position and the bag-in position, and drive the jaw structure to move in the front-back direction; specifically, when the second transmission member moves from the first position to the second position under the action of the zipper-opening drive motor 8011 and the first transmission member, it pushes the first mating structure to move from the bag-out position to the bag-in position. At this time, the inner jaws (one of the swinging jaws 80120 and the fixed jaws 80121) of the movable jaw group 8012a and the fixed jaw group 8012b can extend from outside the packaging bag into the packaging bag. At this time, the outer jaws (the other of the swinging jaws 80120 and the fixed jaws 80121) move together with the inner jaws, but the outer jaws are always located outside the packaging bag.

[0153] When the second transmission member switches between the second position and the third position, it can push the second mating structure to switch between the clamping position and the initial clamping position, and drive the swing claw 80120 to swing in a direction close to or away from the fixed claw 80121, causing the claw structure to move in the front-rear direction; when the second transmission member moves from the second position to the third position under the action of the zipper opening drive motor 8011 and the first transmission member, it can push the second mating structure to move from the initial clamping position to the clamping position. At this time, the swing claw 80120 swings in a direction close to the fixed claw 80121 to complete the clamping process of the packaging bag.

[0154] When the second transmission member switches between the third position and the fourth position, it can push the movable claw group 8012a to move up and down in a direction close to or away from the fixed claw group 8012b; specifically, after the packaging bag clamping process is completed, when the second transmission member moves from the third position to the fourth position under the action of the driving member and the first transmission member, it can push the movable claw group 8012a to move away from the fixed claw group 8012b to realize the zipper opening process.

[0155] The zipper opening device provided by the present disclosure can cooperate with the bag taking device through a single zipper opening drive motor 8011 to complete the entire zipper opening process, and has the advantages of compact structure, small floor area, high production efficiency, and high product quality.

[0156] In an embodiment of the present disclosure, the first transmission member may include a zipper opening transmission gear 8025 connected to the zipper opening drive motor 8011, and the second transmission member may include a first mating bearing 8014, a second mating bearing (not shown in the figure), a zipper opening push plate 8024, a zipper opening transmission rack 8026, and a transmission connection portion 8027. The zipper opening transmission rack 8026 extends in the up-down direction and meshes with the zipper opening transmission gear 8025. The zipper opening transmission gear 8025 rotates under the drive of the zipper opening drive motor 8011 and drives the zipper opening transmission rack 8026 to move in the up-down direction. Among them, the zipper opening transmission rack 8026 may also be fixedly connected to the first mating bearing 8014, the second mating bearing, and the zipper opening push plate 8024 through the transmission connection portion 8027. When the zipper opening transmission rack 8026 moves in the up-down direction, it can drive the first mating bearing 8014, the second mating bearing, and the zipper opening push plate 8024 to move in the up-down direction.

[0157] The first mating structure may include a first mating plate 8015 and a first mounting seat; the first mating plate 8015 has a first guide groove 80150 that slidably mates with the first mating bearing 8014. Figures 20 to 24As shown, the first guide groove 80150 has a first vertical guide section 801501 and an inclined guide section 801502 provided below the first vertical guide section 801501. The lower end of the inclined guide section 801502 is inclined away from the fixed plate 8010. The first assembly seat is fixedly connected to the first mating plate 8015 and the fixed jaw group 8012b, and is movably connected to the movable jaw group 8012a and the fixed plate 8010. The movable jaw group 8012a can move up and down relative to the fixed jaw group 8012b under the push of the second transmission member.

[0158] Among them, when the second transmission member is in the first position, the first mating structure is in the bagging position, and the first mating bearing 8014 is at the lowest end of the inclined guide section 801502. When the first mating bearing 8014 moves from the lowest end of the inclined guide section 801502 to the lowest end of the first vertical guide section 801501, the second transmission member moves from the first position to the second position, and the first mating plate 8015 moves forward away from the fixed plate 8010 under the cooperation of the first mating bearing 8014 and the inclined guide section 801502, so as to drive the first assembly seat and the jaw structure to move forward away from the fixed plate 8010, making the first mating structure move from the bag-taking-out position to the bagging position.

[0159] Specifically, the first assembly seat may include a first assembly plate 8016, a zipper-opening fixing rod 8017 fixedly connected to the upper and lower ends of the first assembly plate 8016, and a zipper-opening guide rod 8018 fixedly connected between the upper and lower zipper-opening fixing rods 8017. The fixed jaw group 8012b and the movable jaw group 8012a further include a jaw seat 80122. In the fixed jaw group 8012b and the movable jaw group 8012a: the swing jaw 80120 and the jaw seat 80122 are both hinged, and the fixed jaw 80121 and the jaw seat 80122 are both fixedly connected. And the jaw seat 80122 of the fixed jaw group 8012b is fixedly connected to the zipper-opening fixing rod 8017 at the lower end of the first assembly plate 8016, and the jaw seat 80122 of the movable jaw group 8012a is movably connected to the zipper-opening guide rod 8018. The jaw seat 80122 of the movable jaw group 8012a can move up and down relative to the zipper-opening guide rod 8018 under the push of the second transmission member.

[0160] Among them, a first return spring is installed on the open zipper guide rod 8018 to ensure that the jaw seat 80122 of the movable jaw group 8012a is normally in the lower position. It should be understood that when the entire bag opening process is completed, the movable jaw group 8012a can freely fall to the normal position by its own gravity. Adding the first return spring is mainly to ensure that it moves down to the position in place and reliably. In addition, it should also be noted that the lower position mentioned in this embodiment is the position waiting to clamp both ends of the packaging bag (for example: zipper bag), that is: the maximum position where the bag mouth of the zipper bag can be sucked open by the suction cup of the bag taking device when the zipper bag is not opened.

[0161] In some embodiments of the present disclosure, the second matching structure may include a second matching plate 8019, a pushing portion, and a second mounting plate 8021; the lower end surface of the second matching plate 8019 is a guiding inclined surface that can be in sliding contact with the second matching bearing, and the rear end surface of the second matching plate 8019 is a vertical plane, and the included angle between the guiding inclined surface and the vertical plane is an obtuse angle; the pushing portion is fixedly connected to the second matching plate 8019; the second mounting plate 8021 is connected to the pushing portion, and the second mounting plate 8021 has a second guiding groove 80210 extending in the up and down direction; the swing jaws 80120 of the fixed jaw group 8012b and the movable jaw group 8012a are both movably installed in the second guiding groove 80210 through jaw bearings 8022.

[0162] Among them, when the second transmission member switches between the second position and the third position, the first matching bearing 8014 can slide in the first vertical guiding section 801501, and the second matching bearing can abut against the guiding inclined surface to push the second matching plate 8019, the pushing portion, and the second mounting plate 8021 to move back and forth, and make the swing jaws 80120 of the fixed jaw group 8012b and the movable jaw group 8012a swing in the direction close to or away from the corresponding fixed jaws 80121 under the action of the second guiding groove 80210.

[0163] Exemplarily, the pushing portion may include a push rod 80201 and a limit rod 80202; the push rod 80201 is fixedly connected to the second matching plate 8019 and is connected to the second mounting plate 8021 through a spring mounting rod 80203; the limit rod 80202 is located on the side of the first mounting plate 8016 away from the fixed plate 8010 and is fixedly connected to the fixed plate 8010 through a connecting rod passing through the first mounting plate 8016 and the push rod 80201. The first mounting plate 8016 and the push rod 80201 can move relative to the connecting rod in the front and back directions. Such a design can ensure the accuracy and stability of each level of transmission on the one hand, and make the structure more compact on the other hand to reduce the space occupied by the overall open zipper device.

[0164] Exemplarily, the swing claws 80120 of the movable jaw group 8012a and the fixed jaw group 8012b are also correspondingly provided with return spring rods 8023. The return spring rods 8023 pass through the limit rods 80202 and the first assembly plate 8016 and are connected to the swing claws 80120. When the second transmission member returns from the third position downward, the swing claws 80120 can be retracted to their in-place positions.

[0165] Exemplarily, the second transmission member further includes an open zipper push plate 8024 fixedly connected to the first mating bearing 8014. A bearing capable of cooperating with the open zipper push plate 8024 is provided on the jaw seat 80122 of the movable jaw group 8012a; wherein, when the second transmission member switches between the third position and the fourth position, the first mating bearing 8014 can slide in the vertical guiding end, and the second mating bearing can contact the vertical plane. At this time, the first mating bearing 8014 and the second mating bearing do not affect the second transmission member from continuing to move. Among them, the open zipper push plate 8024 can contact the bearing on the jaw seat 80122 of the movable jaw group 8012a and push the movable jaw group 8012a to move up and down in a direction close to or away from the fixed jaw group 8012b; wherein, when the open zipper push plate 8024 contacts the bearing on the jaw seat 80122 of the movable jaw group 8012a, the fixed claws 80121 and the swing claws 80120 of the movable jaw group 8012a and the fixed jaw group 8012b are in a clamping state.

[0166] In some alternative embodiments, as Figure 20 shown, a pre-opening suction cup 8013 is fixedly connected to the jaw seat 80122 of the movable jaw group 8012a. The pre-opening suction cup 8013 can cooperate with the bag-taking suction cup 302 of the aforementioned bag-taking device 30 to achieve pre-opening of the bag when the first mating structure is in the bag-taking position. It should be understood that the pre-opening of the bag is achieved before the movable jaw group 8012a and the fixed jaw group 8012b clamp the packaging bag. That is to say, a small opening is first made for pre-opening the bag, and then the inner jaws can extend into the packaging bag, and then the zipper process is realized later.

[0167] In addition, it should also be understood that the connection relationship between the pre-opening suction cup 8013 and the movable jaw group 8012a is not limited to the aforementioned connection relationship, and may also have the following connection relationships:

[0168] Combined with Figures 22 to 24As shown, the zipper opening device further includes an adapter seat 8020 movably connected to the zipper opening guide rod 8018. The adapter seat 8020 can move up and down relative to the zipper opening guide rod 8018 under the push of the second transmission member. The adapter seat 8020 is fixedly connected to the jaw seat 80122 of the movable jaw group 8012a. The zipper opening device further includes a third transmission member. The third transmission member includes a transmission rod 8030 extending in the front-rear direction and a front transmission seat 8031 and a rear transmission seat 8032 respectively arranged at the front and rear ends of the transmission rod 8030. The transmission rod 8030 is movably installed on the adapter seat 8020 and can move relative to the adapter seat 8020 in the front-rear direction. A transmission bearing 8033 is fixedly connected to the front transmission seat 8031, a pre-opening suction cup 8013 is fixedly connected to the rear transmission seat 8032, and a second return spring (not marked in the figure) is arranged between the rear transmission seat 8032 and the adapter seat 8020. The zipper opening device further includes a swing rod 8034. The swing rod 8034 is hinged to the fixing plate 8010, and a third mating bearing 8035 is fixedly connected to the bottom of the swing rod 8034.

[0169] The first guide groove 80150 further has a second vertical guide section 801503 provided at the lower end of the inclined guide section 801502. The pre-opening suction cup 8013 has an avoidance position and a pre-opening bag position. When the pre-opening suction cup 8013 is in the avoidance position, it is used to avoid the suction cup of the bag-taking device, so that the suction cup of the bag-taking device can move in the up-down direction to realize the bag-taking process. When the pre-opening suction cup 8013 is in the pre-opening bag position, it can cooperate with the suction cup of the bag-taking device to realize the pre-opening bag process. The second transmission member also has a fifth position. When the second transmission member is in the fifth position, the first mating bearing 8014 is at the lowest end of the second vertical guide section 801503, and the pre-opening suction cup 8013 is in the avoidance position. When the second transmission member is in the first position, the first mating bearing 8014 is at the connection between the second vertical guide section 801503 and the inclined guide section 801502 (this connection can also be understood as the highest end of the second vertical guide section 801503 or the lowest end of the inclined guide section 801502), and the pre-opening suction cup 8013 is in the pre-opening bag position and can cooperate with the suction cup of the bag-taking device to realize the pre-opening bag.

[0170] Among them, when the first mating bearing 8014 moves from the lowest end of the inclined guide section 801502 to the lowest end of the second vertical guide section 801503, the second transmission member moves from the first position to the fifth position, and the zipper opening transmission rack 8026 moves downward and pushes the third mating bearing 8035 forward, so that the bottom of the swing rod 8034 moves forward, the top of the swing rod 8034 moves backward and presses the transmission bearing 8033 backward, so that the third transmission member drives the pre-opening suction cup 8013 to move backward from the pre-opening bag position to the avoidance position, so that the movable jaw group 8012a gives way to the position where the bag-taking suction cup 302 of the bag-taking device 30 takes and places the bag up and down.

[0171] When the first mating bearing 8014 moves from the lowest end of the second vertical guiding section 801503 to the lowest end of the inclined guiding section 801502, the second transmission member moves from the fifth position to the first position, and the open zipper transmission rack 8026 moves upward, and the third mating bearing 8035 moves backward, so that the bottom of the swing rod 8034 moves backward and the top of the swing rod 8034 moves forward. Under the action of the second return spring, the transmission bearing 8033 moves forward, so that the third transmission member drives the pre-opening suction cup 8013 to move forward from the avoiding position to the pre-opening bag position, so as to cooperate with the bag-taking suction cup 302 of the bag-taking device 30 to perform the action of pre-opening the bag opening.

[0172] Based on the above structure, the specific bag-opening process of the open zipper device according to the embodiment of the present disclosure is as follows:

[0173] When the second transmission member moves upward from the fifth position to the first position, the open zipper transmission rack 8026 moves upward, and the third mating bearing 8035 moves backward, so that the bottom of the swing rod 8034 moves backward and the top of the swing rod 8034 moves forward. Under the action of the second return spring, the transmission bearing 8033 moves forward, so that the third transmission member drives the pre-opening suction cup 8013 to move forward from the avoiding position to the pre-opening bag position. Then, after the bag-taking device moves upward to fit with the pre-opening suction cup 8013, when the pre-opening suction cup 8013 sucks the upper end of the bag opening, the bag-taking suction cup 302 of the bag-taking device 30 moves downward, specifically, it can move to the position where the jaw seat 80122 of the fixed jaw group 8012b is located, so as to realize opening a small opening of the bag opening of the zipper bag with the suction cup and complete the pre-opening bag process.

[0174] The second transmission member moves upward from the first position to the second position. During the process of moving upward from the first position to the second position, the cooperation between the first mating bearing 8014 and the inclined guiding section 801502 of the first guiding groove 80150 can move the entire first mating structure forward from the bag-taking position to the bag-inserting position. When the second transmission member is in the second position, the first mating structure moves to the bag-inserting position. At the same time, the jaw structure as a whole moves into the front end part of the bag taken by the bag-taking device, so as to move the movable jaw group 8012a and the fixed jaw group 8012b into place. At this time, one of the swing jaw 80120 and the fixed jaw 80121 is an inner jaw, that is, it extends into the bag opening, and the other is an outer jaw, that is, it is located outside the bag; optionally, as Figure 22 and Figure 23 shown, the swing jaw 80120 is an outer jaw located outside the packaging bag, and the fixed jaw 80121 is an inner jaw that can extend into the packaging bag; or, as Figure 20 and Figure 21 shown, the swing jaw 80120 is an inner jaw that can extend into the packaging bag, and the fixed jaw 80121 is an outer jaw located outside the packaging bag, depending on the specific situation.

[0175] Then, the second transmission member continues to move upward, that is, it moves upward from the second position to the third position. At this time, the first mating bearing 8014 is located within the first vertical guiding section 801501 and moves upward within the first vertical guiding section 801501. Under the restriction of the first mounting plate 8016 and the limiting rod 80202, the overall position of the first mating structure is fixed, and the second mating bearing begins to cooperate with the guiding inclined surface of the second mating plate 8019 to push the second mating plate 8019 forward. Since the pushing rod 80201 is fixedly connected to the second mating plate 8019, the pushing rod 80201 also moves forward. A spring mounting rod 80203 is installed between the pushing rod 80201 and the second mounting plate 8021, and the compression spring thereon is not shown in the figure. When the pushing rod 80201 pushes forward, the second mounting plate 8021 moves forward, and the bearing placed within the second guiding groove 80210 of the second mounting plate 8021 drives the swinging claw 80120 to swing. When the swinging claw 80120 presses against the fixed claw 80121, the pushing rod 80201 continues to move forward, further compressing the compression spring placed on the spring mounting rod 80203, thereby providing a clamping force between the swinging claw 80120 and the fixed claw 80121 for clamping both ends of the bag.

[0176] After clamping both ends of the bag opening, the zipper-pushing plate 8024 of the second transmission member touches the bearing behind the jaw seat 80122 of the movable jaw group 8012a, and the second transmission member continues to move upward, that is, it moves upward from the third position to the fourth position to push the jaw seat 80122 of the movable jaw group 8012a upward, thereby realizing the action of unzipping the zipper. After completion, the second transmission member returns to the lower end under the drive of the first transmission member and the zipper-opening drive motor 8011 and waits to take out the next bag after the bag-taking device supplies the bag.

[0177] It should be understood that when the jaw seat 80122 of the movable jaw group 8012a is pushed upward, the adapter seat 8020 and the third transmission member will also move upward together. At the same time, the pre-opening suction cup 8013 will also move upward together.

[0178] Based on the aforementioned packaging machine, the working process of the packaging machine in this embodiment can be referred to as follows:

[0179] The packaging bags are stored in the storage tank of the bag storage device 20. After starting the machine, the bag-taking suction cup 302 of the bag-taking device 30 rotates 90 degrees and moves upward in a straight line, and sucks a bag at the lowermost end of the storage tank of the bag storage device 20, and then moves downward to pull it away from the storage tank of the bag storage device 20.

[0180] If the packaging bag is a zipper bag, after the bag taking suction cup 302 of the bag taking device 30 takes the packaging bag from the storage slot of the bag storage device 20, the pre-opening suction cup 8013 of the zipper opening device 80 extends to the pre-bag opening position, and the bag taking suction cup 302 moves up for a while and then down, cooperating with the pre-opening suction cup 8013 to pre-open the zipper bag opening, and then the zipper opening device 80 continues to move, that is, after clamping the two ends of the bag opening, the zipper on the bag opening is directly opened.

[0181] After the zipper opening device 80 is reset, the bag taking suction cup 302 continues to rotate 90 degrees. If the bag is waiting at the bag clamping position, the empty bag is directly fed into the position, and the bag opening is fully opened by the auxiliary bag opening device 110 in cooperation with the bag clamping device 40. If the bag is a flat bag, the zipper opening step is omitted, and the bag taking suction cup 302 directly rotates 90 degrees and feeds the empty bag into the position.

[0182] After the mouth of the empty bag is fully opened, the discharge hopper 501 of the discharge device 50 first descends, and the lower end of the discharge hopper 501 is inserted into the bag.

[0183] After the hopper 501 descends into position, the sub-packaging and weighing device 90 begins to discharge the material, and the material enters the bag through the hopper 501. If desiccant is needed, the desiccant supply device 120 simultaneously supplies desiccant. Then, the material tapping device 130 below taps the bag to ensure that the material enters the bottom of the bag as much as possible.

[0184] For materials that are difficult to fall freely into the bag, the material pushing head 505 moves downward to push the materials into the bag.

[0185] The material pushing head 505 and the lower hopper 501 move upward and back into place respectively, and the clamping claw structure on the bag clamping device 40 moves left or right to realize the conversion of the working position, that is, the loaded material is moved to the sealing device 70 and the empty claw is moved to the middle position to take the bag and load the material.

[0186] After the packaging bag moves to the sealing position, the suction pipe 601 of the vacuum device 60 on it is inserted into the bag downward, and then the clamping claws on the bag clamping device 40 are pulled outward to first flatten the bag opening. After that, the vacuum sealing strip on the sealing device 70 is pressed together first, and external vacuuming begins. If nitrogen filling is required, it will be switched to nitrogen filling after vacuuming is completed; after vacuuming is completed, the sealing strip continues to be pressed together to achieve the sealing action.

[0187] After the above-mentioned actions are completed, the clamping claws on the bag clamping device 40 are released, and the finished packaging bag slides into the middle finished product output device 100 through the chutes on both sides and is then sent out.

[0188] The overall structure of this machine is divided into an integrated type and a combined type. The integrated type is to integrate the sub-packaging weighing device 90 into the whole machine, while the combined type is to separate the sub-packaging weighing device 90 from the packaging machine, making the packaging machine universal and used for different sub-packaging weighing requirements, such as filling.

[0189] Moreover, the bag clamping device of this machine is a horizontal double-station type, which improves the packaging speed.

[0190] Other embodiments of the present disclosure will be readily apparent to those skilled in the art after considering the specification and practice of the content disclosed herein. The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure, which follow the general principles of the present disclosure and include known common general knowledge or conventional technical means in the technical field not disclosed in the present disclosure. The specification and examples are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the appended claims.

Claims

1. A packaging machine, characterized in that, Comprising: A frame, a bag storage device, a bag picking device, a bag clamping device, a blanking device, a vacuum pumping device, a sealing device and a zipper opening device mounted on the frame; wherein, The bag storage device has a storage tank for storing packaging bags; The bag picking device is located below the storage tank, and the bag picking device includes a bag picking driving mechanism and a bag picking suction cup connected to the bag picking driving mechanism. The bag picking suction cup can suck the packaging bag at the lowermost end of the storage tank under the drive of the bag picking driving mechanism and move the packaging bag to the bag clamping position; The bag clamping device includes a station conversion motor and a jaw structure connected to the station conversion motor. The jaw structure can be switched between the bag clamping position and the sealing position under the drive of the station conversion motor. The jaw structure includes a clamping driving mechanism and a left jaw group and a right jaw group connected to the clamping driving mechanism. The left jaw group and the right jaw group can clamp the left and right ends of the packaging bag on the bag picking device at the bag clamping position under the drive of the clamping driving mechanism, and can also move towards each other under the drive of the clamping driving mechanism after clamping to open the bag; The blanking device includes a blanking driving mechanism and a blanking hopper connected to the blanking driving mechanism. The blanking hopper is located above the bag clamping position. The bottom end of the blanking hopper can descend into the opened packaging bag under the drive of the blanking driving mechanism; after blanking is completed, the blanking driving mechanism can drive the blanking hopper to move upward away from the packaging bag, and the jaw structure can move to the sealing position; The vacuum pumping device includes a vacuum pumping driving mechanism and a suction pipe connected to the vacuum pumping driving mechanism. The suction pipe is located above the sealing position. The suction pipe can descend into the packaging bag under the drive of the vacuum pumping driving mechanism. After that, the left jaw group and the right jaw group can move away from each other under the drive of the clamping driving mechanism to flatten the packaging bag; The sealing device is arranged at the sealing position. The sealing device includes a sealing driving mechanism and a sealing strip assembly connected to the sealing driving mechanism. The sealing strip assembly can be pressed under the drive of the sealing driving mechanism, and then starts to pump vacuum. After the vacuum pumping is completed, the vacuum pumping driving mechanism drives the suction pipe to move upward away from the packaging bag. After that, the sealing strip assembly can continue to be pressed under the drive of the sealing driving mechanism to realize the sealing action; The zipper-opening device is installed on the frame and is located below the storage tank. The zipper-opening device includes a zipper-opening driving mechanism, a bag-opening jaw mechanism, and a pre-opening suction cup. The zipper-opening driving mechanism is connected to the bag-opening jaw mechanism and the pre-opening suction cup. The pre-opening suction cup is in an avoidance position during the process of the bag-taking suction cup moving towards the storage tank to take a bag. After the bag-taking suction cup finishes taking the bag, the pre-opening suction cup can move from the avoidance position to the pre-opening position under the drive of the zipper-opening driving mechanism. The bag-taking suction cup moves upward for a certain distance and then downward under the drive of the bag-taking driving mechanism to cooperate with the pre-opening suction cup to pre-open the zippered packaging bag. After the pre-opening is achieved, the bag-opening jaw mechanism can clamp both ends of the bag mouth of the zippered packaging bag under the action of the zipper-opening driving mechanism and then directly open the zipper on the bag mouth. When the pre-opening suction cup is reset to the avoidance position under the drive of the zipper-opening driving mechanism, the bag-taking suction cup rotates 90° under the drive of the bag-taking driving mechanism to move the packaging bag to the bag-clamping position; The bag-taking device further includes a bag-taking mounting seat, which is arranged below the bag storage device and is connected to the frame. The bag-taking mounting seat has a bag-taking guide groove, and the bag-taking guide groove has a vertically arranged bag-taking vertical section and a horizontally arranged bag-taking horizontal section, and the bag-taking horizontal section is arc-transitionally connected to the bag-taking vertical section; The bag-taking driving mechanism includes a bag-taking motor, a gear transmission assembly, a bag-taking swing rod, a bag-taking bearing, and a suction cup mounting seat. The bag-taking motor is connected to the bag-taking swing rod through the gear transmission assembly. The bag-taking swing rod can swing under the drive of the bag-taking motor, and the bag-taking swing rod is provided with a swing rod guide groove. The bag-taking bearing is fixedly installed on the suction cup mounting seat, and the bag-taking bearing is slidably installed in the bag-taking guide groove and the swing rod guide groove. The bag-taking bearing can slide along the track of the bag-taking guide groove under the swing of the bag-taking swing rod; Wherein, the bag-taking suction cup is fixedly connected to the suction cup mounting seat and can cooperate with the bag storage device and the bag-clamping device when the bag-taking bearing slides along the track of the bag-taking guide groove.

2. The packaging machine according to claim 1, wherein, The packaging machine further includes: A dispensing and weighing device, which includes a dispensing mounting plate fixedly connected to the frame, and a linear vibrating chute, a spiral vibrating disk, a weighing hopper, and a storage hopper installed on the dispensing mounting plate; the linear vibrating chute has a material-bearing cavity for bearing the gravity of the material in the hopper, and a material discharge port is arranged on one side of the material-bearing cavity; The material discharge port of the linear vibrating chute corresponds to the central feeding area of the spiral vibrating disk, and the linear vibrating chute is used for intermittently feeding the spiral vibrating disk; The weighing hopper is opposite to the discharge port of the spiral vibrating disk. The weighing hopper is used for weighing the weight of the material, and the weighing hopper opens its own discharge port after weighing is completed; The material receiving port of the storage hopper is located below the discharge port of the weighing hopper, and the discharge port of the storage hopper is located above the feeding hopper. The discharge port of the storage hopper is used to open when the material stored in itself meets the preset weight.

3. The packaging machine according to claim 1, wherein, The packaging machine further includes: A finished product output device, including a finished product drive motor, a finished product synchronous belt drive mechanism, and a finished product conveying flat belt. The finished product conveying flat belt is inclined. The bottom end of the finished product conveying flat belt is close to the sealing position, and the top end of the finished product conveying flat belt is far from the sealing position. The finished product drive motor drives the sealed packaging finished product on the finished product conveying flat belt to be lifted from the bottom end of the finished product conveying flat belt to the top end of the finished product conveying flat belt through the finished product synchronous belt drive mechanism and then output to the outside of the machine frame.

4. The packaging machine according to claim 1, characterized in that, The packaging machine further includes: An auxiliary bag opening device, including an auxiliary drive mechanism and an auxiliary suction cup connected to the auxiliary drive mechanism. The auxiliary suction cup can be on the same horizontal plane as the bag taking suction cup when the bag taking suction cup is at the bag clamping position, and the auxiliary suction cup can suck the bag mouth and move backward away from the bag taking suction cup under the drive of the auxiliary drive mechanism while the left jaw group and the right jaw group move closer to each other to open the bag. And the bag taking suction cup can suck the bag mouth and move forward away from the auxiliary suction cup under the drive of the bag taking drive mechanism to realize bag opening.

5. The packaging machine according to claim 1, characterized in that, The packaging machine further includes: A desiccant feeding device, located above the bag clamping position. The desiccant feeding device includes a conveying structure and a storage structure. The conveying structure includes a driving part, a driving roller, a driven roller, and a conveyor belt. The driving part is connected to the driving roller, the driven roller is arranged at an interval from the driving roller, and the conveyor belt is sleeved on the driven roller and the driving roller. The storage structure is arranged above the conveyor belt, and the storage structure includes a first fixing plate, a second fixing plate, and at least one intermediate plate. The first fixing plate and the second fixing plate are opposite and spaced apart in a direction intersecting the conveying direction of the conveyor belt. The intermediate plate is located between the first fixing plate and the second fixing plate and encloses a storage cavity with the two. The storage cavity is used for storing a plurality of stacked desiccant packets, and a supply outlet for the desiccant packets to pass through is formed between the lower end of the intermediate plate and the upper end of the conveyor belt. Wherein, a resistance piece is provided at the lower end of at least one of the intermediate plates, and the friction force between the resistance piece and the desiccant packet is greater than the friction force between the two desiccant packets, and the friction force between the conveyor belt and the desiccant packet is greater than the friction force between the two desiccant packets.

6. The packaging machine according to claim 1, wherein The packaging machine further includes: A material patting device, including a material patting motor and a material patting plate. The material patting motor is connected to the material patting plate through a gear and rack mechanism to be able to drive the material patting plate to do repeated up and down movements after the feeding device finishes feeding to pat the packaging bag filled with materials.

7. The packaging machine according to claim 1, wherein The feeding drive mechanism includes a feeding motor and a feeding synchronous belt mechanism. The feeding motor is connected to the feeding hopper through the feeding synchronous belt mechanism to drive the feeding hopper to move up and down; A detachable supporting bag claw is arranged at the lower end of the feeding hopper; The blanking device further includes a material poking push head, a material poking motor, and a material poking synchronous belt mechanism. The material poking motor is connected to the material poking push head through the material poking synchronous belt mechanism to drive the material poking push head to move up and down, so as to poke the materials in the blanking hopper.

8. The packaging machine according to claim 1, wherein two sets of the jaw structures are provided and arranged at intervals in the left-right direction. Both sets of the jaw structures are connected to the station conversion motor. The two sets of the jaw structures share a bag clamping position, and the sealing positions of the two sets of the jaw structures are arranged on the left and right sides of the bag clamping position and are symmetrically distributed about the center; two sets of the vacuum pumping devices are provided, and the suction pipe of each set of the vacuum pumping devices is located above one of the sealing positions; two sets of the sealing devices are provided, and each set of the sealing devices is correspondingly arranged at one of the sealing positions; wherein, the sealing driving mechanism includes a sealing motor, a first sealing gear connected to the sealing motor, a second sealing gear located below the first sealing gear and coaxially arranged with the first sealing gear, a first sealing rack and a second sealing rack located on opposite sides in the radial direction of the second sealing gear and meshing with the second sealing gear. The first sealing rack is fixedly connected to a first sealing push plate, and the second sealing rack is fixedly connected to a second sealing push plate through a rigid shaft; the sealing strip includes a first vacuum sealing strip and a second vacuum sealing strip which are oppositely arranged, and a first sealing strip and a second sealing strip which are oppositely arranged; the first vacuum sealing strip is connected to the side of the first sealing push plate close to the second sealing push plate through a vacuum sealing guide rod with a compression spring, and the second vacuum sealing strip is connected to the side of the second sealing push plate close to the first sealing push plate through another vacuum sealing guide rod with a compression spring; the first sealing strip is connected to the side of the first sealing push plate close to the second sealing push plate through a sealing guide rod with a compression spring, and the second sealing strip is connected to the side of the second sealing push plate close to the first sealing push plate through another sealing guide rod with a compression spring; when not in the vacuum pumping and sealing states, the first sealing strip retracts relative to the first vacuum sealing strip, and the second sealing strip retracts relative to the second vacuum sealing strip.

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