Apparatus for automatic bagging of nuts and method of automatic bagging thereof

Abstract

The application discloses a device for automatic bagging of nuts and an automatic bagging method thereof, wherein the device for automatic bagging of nuts comprises a rotating disc device, a bag supplying device, a bag opening device, a bag filling device, a bag sealing device and a conveying device; the rotating disc device further comprises a bag supporting mechanism, the bag supporting mechanism comprises a pair of bag supporting claws capable of extending into a packaging bag, and the pair of bag supporting claws rotate oppositely to support the packaging bag open; the bag supporting mechanism comprises a bag supporting arm extending along the radial direction of a rotating disc of the rotating disc device, one end of the bag supporting arm is provided with the bag supporting claw, and the other end of the bag supporting arm is located at the center of the rotating disc; a control shaft is arranged at the center of the rotating disc, the top end of the control shaft is fixedly connected with the bag supporting arm, and the control shaft is capable of ascending and rotating, so that the pair of bag supporting claws reciprocate between the bag opening device and the bag filling device. The device for automatic bagging of nuts and the automatic bagging method thereof can keep the packaging bag in an open state, and facilitate the bagging part to extend into the packaging bag to fill the packaging bag.

Description

[0001] This application is a divisional application of the application filed on March 14, 2025, with application number 202510303340.X and application title "Automatic Nut Baking Equipment and Automatic Baking Method Thereof". Technical Field

[0002] This invention relates to the technical field of packaging equipment, and in particular to an automatic bagging device for nuts and an automatic bagging method thereof. Background Technology

[0003] The prior art provides a patent document relating to nut packaging equipment and packaging method. The publication date of the patent document is March 12, 2024, the publication number is CN117682179A, the application number is 202311658020.3, and the invention title is a macadamia nut packaging machine and its usage method.

[0004] In this patent document, the nut packaging machine includes a turntable mechanism and a bag feeding mechanism, a bag opening mechanism, and a bag filling section located around the turntable mechanism.

[0005] In other words, existing technology supplies packaging bags with a single opening to a turntable, which rotates the packaging bags to various workstations to sequentially perform operations such as opening, filling, sealing, and conveying.

[0006] However, when the packaging bag is transferred from the opening section to the filling section, the packaging bag is prone to becoming half-open due to air, making it inconvenient for the filling section to extend into the packaging bag to fill the material. Summary of the Invention

[0007] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a device for automatic bagging of nuts, which can keep the packaging bag in an open state to facilitate the insertion of the bagging part into the packaging bag for filling.

[0008] The present invention also proposes an automatic nut bagging method using the above-mentioned automatic nut bagging equipment.

[0009] According to a first aspect of the present invention, an apparatus for automatically bagging nuts includes a turntable device, a bag feeding device, a bag opening device, a filling device, a sealing device, and a conveying device arranged circumferentially along the turntable device; the bag feeding device is used to provide a bag to the turntable device, the turntable device is used to clamp two sides of the bag and rotate the bag to the respective devices, the bag opening device is used to attract two sides of the bag and separate the two sides from each other to open the bag, the filling device is used to put nuts into the bag, the sealing device is used to seal the bag containing nuts, and the conveying device is used to convey and remove the sealed bag. The turntable device also includes a bag-supporting mechanism, which reciprocates between the bag-opening device and the filling device. The bag-supporting mechanism includes a pair of bag-supporting claws, which can extend into the packaging bag and rotate relative to each other to open the packaging bag. The bag-supporting mechanism includes a bag-supporting arm extending radially along the turntable of the turntable device. One end of the bag-supporting arm is provided with a bag-supporting claw, and the other end of the bag-supporting arm is located at the center of the turntable. A control shaft is provided at the center of the turntable, and the top end of the control shaft is connected and fixed to the bag-supporting arm. The control shaft can be raised, lowered, and rotated to cause a pair of bag-supporting claws to reciprocate between the bag-opening device and the filling device.

[0010] The device for automatic nut bagging according to embodiments of the present invention has at least the following beneficial effects: By setting up a bag-supporting mechanism, the present invention ensures that when the bag-opening device opens the bag opening, the bag-supporting claw of the bag-supporting mechanism extends into the bag, keeping the bag opening open. At the same time, when the turntable rotates and separates the bag from the bag-opening device, the bag opening is prevented from being closed by air.

[0011] In addition, when the packaging bag is in the filling device, the bag-supporting mechanism can open the bag-supporting claws, so that the packaging bag is opened to a greater extent, making it easier for the filling device to extend into the packaging bag, rather than pressing the edge of the packaging bag, thus avoiding filling failure.

[0012] Specifically, such as Figure 5 As shown, the push rod pushes the bag-supporting claws, which rotate to open the packaging bag. When the push rod is released, the two bag-supporting claws rotate under the support of the spring, so that the claw ends of the bag-supporting claws come closer to each other, making it easier for the two bag-supporting claws to be inserted into the packaging bag. At the same time, since the two support claws are hinged, the two support claws can move synchronously.

[0013] This invention also provides an automatic nut bagging method, which has the aforementioned beneficial effects.

[0014] According to a first aspect of the present invention, an apparatus for automatically bagging nuts includes a bag opening device comprising a front suction plate and a rear suction plate arranged radially along the turntable device. The front suction plate and the rear suction plate are capable of translating closer to each other to adsorb the packaging bag, and the front suction plate and the rear suction plate are capable of translating further away from each other so that the two sides of the packaging bag are separated from each other to open the bag.

[0015] According to a first aspect of the present invention, an apparatus for automatically bagging nuts includes a bag feeding device comprising a first suction arm, a second suction arm, and a clamping and translating seat; the first suction arm is used to pick up the packaging bag and switch the packaging bag from a flat state to an inclined state; the second suction arm is used to pick up the packaging bag and switch the packaging bag from the inclined state to an upright state; the clamping and translating seat is used to clamp the upright packaging bag and move the packaging bag to the turntable device.

[0016] According to a first aspect of the present invention, an apparatus for automatically bagging nuts is provided, wherein the first suction arm includes a first suction disc and a first negative pressure line communicating with the first suction disc, the second suction arm includes a second suction disc and a second negative pressure line communicating with the second suction disc, at least one of the first negative pressure line and the second negative pressure line is connected to a pressure gauge, and the pressure gauge is electrically connected to the controller.

[0017] According to a first aspect of the present invention, an apparatus for automatically bagging nuts includes a clamping and translating seat comprising a pair of jaws for clamping the top edge of the packaging bag, the jaws being capable of flipping and releasing the packaging bag, and the turntable device comprising multiple pairs of side clamps, one pair of which clamps two sides of the packaging bag.

[0018] According to a first aspect of the present invention, an apparatus for automatically bagging nuts includes a turntable device comprising multiple pairs of side clamps, one pair of which clamps two sides of the packaging bag, the side clamps being connected to a support arm, the support arm being fixed to the turntable of the turntable device, and a second pressure sensor being disposed between the support arm and the turntable, the second pressure sensor being electrically connected to the controller.

[0019] According to a first aspect of the present invention, an apparatus for automatically bagging nuts further includes a receiving warning device located at the bottom of the filling device. The receiving warning device includes a lifting frame, a receiving tray disposed on the lifting frame, and a first pressure sensor disposed at the bottom of the receiving tray. The first pressure sensor is used to detect the pressure of the receiving tray on the lifting frame and is electrically connected to the controller of the apparatus for automatically bagging nuts. Before the feeding device puts the nuts into the packaging bag, the lifting frame rises to its highest point, and the receiving tray supports the packaging bag; when the feeding device puts the nuts into the packaging bag, the lifting frame descends; when the lifting frame descends to its lowest point, the receiving tray separates from the packaging bag, and the first pressure sensor transmits the final pressure value to the controller; when the final pressure value exceeds the set value, the controller issues an alarm.

[0020] According to a first aspect of the present invention, an apparatus for automatic bagging of nuts includes a receiving warning device comprising a movable seat connected to the lifting frame and an arc-shaped track connected to the movable seat, the arc-shaped track extending circumferentially along the turntable device and located between the filling device and the sealing device.

[0021] According to a second aspect of the present invention, an automatic nut bagging method is performed using the automatic nut bagging equipment described in any one of the above-mentioned embodiments. The automatic nut bagging method includes: In the bag feeding step, the bag feeding device supplies the stacked packaging bags one by one to the turntable device; In the bag opening step, the turntable device transfers the packaging bag to the bag opening device, which then attracts the two sides of the packaging bag, causing the two sides of the packaging bag to move away from each other to open the bag. In the bag-opening step, the control shaft drives the bag-opening arm and the bag-opening claw to descend, the bag-opening claw extends into the packaging bag and opens it up, and the bag-opening claw rotates synchronously with the turntable device so that the packaging bag is located at the bottom of the filling device; In the filling step, the filling device descends, the filling device extends into the packaging bag, the filling device puts nuts into the packaging bag, and the control shaft drives the bag support arm to rise and rotate, so that the bag support claw rises and rotates back to the bag opening device. In the sealing step, after the feeding device has finished feeding, the turntable device rotates the packaging bag to the sealing device, and the sealing device seals the packaging bag. In the unloading step, the turntable device rotates the packaging bag from the sealing device to above the conveying device, the turntable device releases the packaging bag, and the conveying device removes the packaging bag.

[0022] According to a second aspect of the present invention, the automatic nut bagging method further includes a receiving warning device located at the bottom of the filling device. The receiving warning device includes a lifting frame, a receiving tray disposed on the lifting frame, and a first pressure sensor disposed at the bottom of the receiving tray. The first pressure sensor is used to detect the pressure of the receiving tray on the lifting frame and is electrically connected to the controller of the automatic nut bagging device. Before the feeding device puts the nuts into the packaging bag, the lifting frame rises to its highest point, and the receiving tray supports the packaging bag; when the feeding device puts the nuts into the packaging bag, the lifting frame descends; when the lifting frame descends to its lowest point, the receiving tray separates from the packaging bag, and the first pressure sensor transmits the final pressure value to the controller; when the final pressure value exceeds the set value, the controller issues an alarm. In the loading step, the loading device descends, and before that, the lifting frame rises to its highest point, and the receiving tray supports the packaging bag. In the filling step, the bag support claw rises and rotates to the bag opening device, and then the lifting frame descends. When the lifting frame descends to the lowest point, the receiving tray separates from the packaging bag. The first pressure sensor detects the final pressure and transmits the final pressure value to the controller. When the final pressure value exceeds the set value, the controller issues an alarm.

[0023] According to a second aspect of the present invention, an automatic nut bagging method is provided, wherein the turntable device includes multiple pairs of side clamps, one pair of side clamps clamps two sides of the packaging bag, the side clamps are connected to a support arm, the support arm is fixed to the turntable of the turntable device, and a second pressure sensor is provided between the support arm and the turntable, the second pressure sensor being electrically connected to the controller. The material receiving warning device includes a movable seat connected to the lifting frame and an arc-shaped track connected to the movable seat. The arc-shaped track extends circumferentially along the turntable device and is located between the loading device and the sealing device. When the value of the second pressure sensor decreases, the movable seat moves along the arc track to the bottom of the corresponding packaging bag, the lifting frame rises, the receiving tray supports the packaging bag, the side clamp releases its grip, the receiving tray receives the packaging bag, and the first pressure sensor checks the pressure value and updates the preset value.

[0024] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the principle structure of an automatic nut bagging device according to an embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the central supply bag device; Figure 3 for Figure 1 Schematic diagram of the rotary table device; Figure 4 for Figure 1 Schematic diagram of the opening bag device; Figure 5 for Figure 1 A schematic diagram of the central support bag mechanism; Figure 6 for Figure 1 Schematic diagram of the loading device and receiving warning device; Figure 7 for Figure 6 Schematic diagram of the intermediate material receiving early warning device; Figure 8 for Figure 1 Schematic diagram of the sealing device; Figure 9 for Figure 1 Schematic diagram of the conveyor system; Figure 10 For application Figure 1 A flowchart illustrating the process of an automated nut bagging method for an automated nut bagging device.

[0027] Reference numerals: Turntable device 100; Bag feeding device 110; Bag opening device 120; Bag supporting mechanism 130; Filling device 140; Sealing device 150; Conveying device 160; Material receiving warning device 170; Material receiving tray 180; Lifting frame 190; First pressure sensor 200; First suction swing arm 210; Second suction swing arm 220; Clamping translation seat 230; Gripper 240; Side clamp 250; Support arm 260; Moving seat 270; Arc track 280; Bag supporting claw 290; Bag supporting arm 300; Control shaft 310; Front suction bag plate 320; Rear suction bag plate 330; Fixed clamp 340; Movable clamp 350; Conveyor belt 360. Detailed Implementation

[0028] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0029] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0030] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" and "second" are mentioned, this is only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0031] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation, connection, and linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0032] The following describes, with reference to the accompanying drawings, an apparatus for automatically bagging nuts and a method thereof according to embodiments of the present invention.

[0033] Reference Figure 1 The present invention aims to provide an embodiment of an automatic nut bagging device.

[0034] In this embodiment, the automatic nut bagging equipment includes a turntable device 100, a bag feeding device 110, a bag opening device 120, a filling device 140, a sealing device 150, and a conveying device 160 arranged circumferentially along the turntable device 100. The bag feeding device 110 is used to provide packaging bags to the turntable device 100. The turntable device 100 is used to clamp the two sides of the packaging bag and rotate the packaging bag to the respective devices. The bag opening device 120 is used to absorb the two sides of the packaging bag and separate the two sides from each other to open the bag. The filling device 140 is used to put nuts into the packaging bag. The sealing device 150 is used to seal the packaging bag containing nuts. The conveying device 160 is used to convey and remove the sealed packaging bag.

[0035] Reference Figure 2For the bag feeding device 110, the bag feeding device 110 includes a first suction swing arm 210, a second suction swing arm 220 and a clamping and translating seat 230; the first suction swing arm 210 is used to pick up the packaging bag and switch the packaging bag from a flat state to an inclined state; the second suction swing arm 220 is used to pick up the packaging bag and switch the packaging bag from an inclined state to an upright state; the clamping and translating seat 230 is used to clamp the upright packaging bag and move the packaging bag to the turntable device 100.

[0036] That is, the first suction arm 210 first picks up the packaging bag, then the first suction arm 210 rotates, so that the packaging bag changes from a flat state to an inclined state. Then, the second suction arm 220 picks up the inclined packaging bag, then the second suction arm 220 rotates, so that the packaging bag changes from an inclined state to an upright state. Next, the clamping and translating seat 230 clamps the upright packaging bag, and then the clamping and translating seat 230 moves the packaging bag to the turntable device 100.

[0037] Finally, the turntable device 100 clamps the packaging bag. The clamping position of the turntable device 100 is different from that of the clamping and translation seat 230. The clamping position of the turntable device 100 is the two sides of the packaging bag, which facilitates subsequent bag opening and opening.

[0038] It is easy to understand that the packaging bag can be gradually switched from a flat position to an upright position without affecting the placement of incoming materials, while still meeting the bagging requirements, making the bagging process smooth and reliable.

[0039] At the same time, the gradual shift from a flat to an upright position for packaging bags also facilitates the separation of packaging bags from each other, reducing the occurrence of situations where more than one packaging bag is supplied at a time.

[0040] In some specific embodiments of the present invention, the first suction arm 210 may include a first suction plate and a first negative pressure pipeline connected to the first suction plate, and the second suction arm 220 may include a second suction plate and a second negative pressure pipeline connected to the second suction plate. At least one of the first negative pressure pipeline and the second negative pressure pipeline is connected to a pressure gauge, and the pressure gauge is electrically connected to a controller.

[0041] It is easy to understand that, by setting up a pressure gauge, this embodiment can detect the adsorption pressure of the first negative pressure pipeline and the second negative pressure pipeline. When there are holes in the packaging bag that cause negative pressure leakage, an early warning can be given by the pressure change.

[0042] Meanwhile, since the positions where the first and second suction discs are adsorbed do not overlap, the detection area can be expanded, avoiding the failure of the pressure gauge due to the tricky position of the hole.

[0043] In some specific embodiments of the present invention, the number of the first suction arm 210 and the number of the second suction arm 220 may be more than one, thus allowing for multi-point adsorption of the packaging bag and reducing the possibility of the packaging bag rotating relative to the suction plate.

[0044] The clamping and translating seat 230 may include a pair of jaws 240 for clamping the top edge of the packaging bag. The jaws 240 are capable of flipping the packaging bag and releasing it. The turntable device 100 includes multiple pairs of side clamps 250, with each pair of side clamps 250 clamping two sides of the packaging bag.

[0045] It's easy to understand that the gripper 240 can rotate, which can both meet the need to hold the packaging bag and avoid it, eliminating the need for the gripper 240 to rise or fall, thus simplifying the material handling and translation of the clamping and translation base 230. In some specific embodiments of the present invention, the first suction arm 210, the second suction arm 220 and the clamping and translating seat 230 can be connected to a crank-connecting rod structure or an eccentric wheel structure, so that the first suction arm 210, the second suction arm 220 and the clamping and translating seat 230 are linked together, simplifying the power configuration, reducing manufacturing costs, and at the same time having a strict timing sequence to meet the bag supply requirements.

[0046] Reference Figure 3 For the turntable device 100, the turntable device 100 includes multiple pairs of side clamps 250. One pair of side clamps 250 clamps two sides of the packaging bag. The side clamps 250 are connected to support arms 260. The support arms 260 are fixed to the turntable of the turntable device 100. A second pressure sensor is provided between the support arm 260 and the turntable. The second pressure sensor is electrically connected to the controller.

[0047] Because the turntable device 100 has a side clamp 250, the side clamp 250 binds the side of the packaging bag, while not restricting the opening of the packaging bag, making it convenient to perform operations such as opening the bag, opening the bag, filling the bag and sealing the bag.

[0048] Meanwhile, a second pressure sensor is installed to facilitate monitoring of the packaging bag during operation. If nuts fall from the packaging bag, the pressure between the support arm 260 and the turntable will change, causing the value of the second pressure sensor to change, thus providing an early warning not only at the loading point.

[0049] Reference Figure 4 For the bag opening device 120, the bag opening device 120 includes a front suction plate 320 and a rear suction plate 330 arranged in the radial direction of the turntable device 100. The front suction plate 320 and the rear suction plate 330 can be moved closer to each other to adsorb the packaging bag, and the front suction plate 320 and the rear suction plate 330 can be moved further away from each other so that the two sides of the packaging bag are far apart to open the bag.

[0050] In some specific embodiments of the present invention, the front suction bag plate 320 and the rear suction bag plate 330 can be used to suction the top edge of the packaging bag to complete the opening of the bag.

[0051] In some specific embodiments of the present invention, the support arm 260 can be lower than the front suction plate 320. Therefore, the bag opening device 120 does not need to raise or lower the front suction plate 320 and the rear suction plate 330, which helps to simplify the structure and reduce manufacturing costs.

[0052] Reference Figure 5 For the bag-supporting mechanism 130, the bag-supporting mechanism 130 includes a bag-supporting arm 300 extending radially along the turntable of the turntable device 100. One end of the bag-supporting arm 300 is provided with a bag-supporting claw 290, and the other end of the bag-supporting arm 300 is located at the center of the turntable. A control shaft 310 is provided at the center of the turntable. The top end of the control shaft 310 is connected and fixed to the bag-supporting arm 300. The control shaft 310 can be raised, lowered and rotated so that a pair of bag-supporting claws 290 reciprocate between the bag-opening device 120 and the filling device 140.

[0053] It is easy to understand that when the control shaft 310 descends, a pair of bag-supporting claws 290 can extend into the packaging bag. The pair of bag-supporting claws 290 rotate relative to each other to open the packaging bag. Then, the bag-supporting mechanism 130 and the turntable rotate together, so that the bag-supporting claws 290 and the packaging bag are simultaneously located below the filling device 140, which facilitates the insertion of the bag-filling device into the packaging bag.

[0054] When the filling is complete, the control shaft 310 rises, causing the bag-supporting claw 290 to disengage from the packaging bag. Then, the control shaft 310 rotates, causing the bag-supporting claw 290 to return to the bag-opening device 120.

[0055] In some specific embodiments of the present invention, during the filling process, the bag support claw 290 can be kept inside the packaging bag to prevent the weight of the nuts from causing the bag opening to move, and to prevent the bag opening from being misaligned with the filling device 140, which would cause the nuts to spill outside the packaging bag.

[0056] Reference Figure 6 For the feeding device 140, the receiving device includes a liftable feeding hopper that is directly associated with the feeding device. After the feeding hopper is lowered, it will be inserted into the packaging bag to facilitate the filling of nuts into the packaging bag and prevent the nuts from spilling out.

[0057] When the hopper rises, it moves away from the packaging bag, without affecting the packaging bag's rotation with the turntable.

[0058] Reference Figure 6 and 7The automatic nut bagging equipment also includes a receiving warning device 170. The receiving warning device 170 is located at the bottom of the filling device 140. The receiving warning device 170 includes a lifting frame 190, a receiving tray 180 disposed on the lifting frame 190, and a first pressure sensor 200 disposed at the bottom of the receiving tray 180. The first pressure sensor 200 is used to detect the pressure of the receiving tray 180 on the lifting frame 190. The first pressure sensor 200 is electrically connected to the controller of the automatic nut bagging equipment.

[0059] In use, before the feeding device 140 puts the nuts into the packaging bag, the lifting frame 190 rises to its highest point, and the receiving tray 180 supports the packaging bag; when the feeding device 140 puts the nuts into the packaging bag, the lifting frame 190 descends; when the lifting frame 190 descends to its lowest point, the receiving tray 180 separates from the packaging bag, and the first pressure sensor 200 transmits the final pressure value to the controller. When the final pressure value exceeds the set value, the controller will sound an alarm.

[0060] In summary, by setting up a material receiving warning device 170, the lifting frame 190 can drive the receiving tray 180 to rise before the loading operation, so that the receiving tray 180 supports the packaging bag. Therefore, the falling distance of the nuts can be shortened, the impact of the nuts on the packaging bag can be reduced, and in particular, the rigid pulling between the packaging bag and the turntable device 100 can be reduced, thus protecting the packaging bag and preventing damage to the packaging bag.

[0061] Furthermore, for cases where the packaging bag has partial holes, the 180° receiving tray supports the bag, making it easier for nuts to leak out through the holes and facilitating the identification of damaged packaging. However, when the packaging bag is suspended in the air, the holes are often lateral, causing nuts to fall to the bottom of the bag rather than through the holes, making them less easily detected.

[0062] In addition, for cases where the bottom of the packaging bag is not sealed, the identification settings can be simplified, reducing manufacturing costs.

[0063] If visual recognition is used to confirm that the bottom of a packaging bag is not sealed, the position of the bottom of the packaging bag can change at will, making it difficult to obtain a clear image. Moreover, the difference between the image of a sealed and unsealed bottom of the packaging bag is very small, making recognition prone to errors, resulting in low reliability and extremely high manufacturing costs.

[0064] The present invention provides a material receiving warning device 170. When the material is being loaded, the lifting frame 190 can drive the receiving tray 180 to descend, so that the space of the packaging bag gradually increases to accommodate a set number of nuts, prevent the nuts from overflowing, and meet the needs of bagging and packaging.

[0065] This invention incorporates a first pressure sensor 200. When the packaging bag is damaged and the nuts fall into the receiving tray 180, the pressure value of the first pressure sensor 200 will change, providing a timely warning to confirm the incoming packaging bag status and the normal operation of the automatic nut bagging equipment.

[0066] In some operating conditions, the automatic nut bagging equipment may supply two bags at a time, and the filling device 140 will fill the nuts between the two bags, causing some nuts to spill out of the bags.

[0067] In some operating conditions, the automatic nut bagging equipment may run empty, that is, although there are no bags on the turntable device 100, the feeding device 140 still performs the feeding operation, causing the nuts to fall directly onto the surface of the equipment or the ground.

[0068] By setting up a receiving tray 180, the present invention can also collect the scattered nuts, preventing the nuts from falling onto the equipment surface or the ground, reducing waste, and preventing the nuts from being contaminated.

[0069] In some specific embodiments of the present invention, the receiving warning device 170 may include a movable seat 270 connected to the lifting frame 190 and an arc-shaped track 280 connected to the movable seat 270. The arc-shaped track 280 extends circumferentially along the turntable device 100 and is located between the loading device 140 and the sealing device 150.

[0070] It is easy to understand that by setting up the arc track 280 in this embodiment, when the packaging bag is partially broken due to the continuous action of the nuts before sealing, or when the nuts fall off before or after the packaging bag is transferred to the sealing device 150, the movable seat 270 can move along the arc track 280 to the bottom of the corresponding packaging bag, and pick up the defective packaging bag and the corresponding nuts, so as to avoid affecting the bagging operation and also to avoid the nuts being contaminated or wasted.

[0071] Meanwhile, the curved track 280 matches the shape of the turntable, reducing space occupation and facilitating layout.

[0072] For the power drive of the movable seat 270, a gear ring can be set on the arc track 280, and the movable seat 270 is equipped with a motor and gears. The motor drives the gears to rotate, and the gears mesh with the gear ring to drive the movable seat 270 to move.

[0073] Reference Figure 8 For the sealing device 150, the sealing device 150 may include a fixed clamp 340 and a movable part. The movable clamp 350 and the fixed clamp 340 are close to each other, clamping and heating the packaging bag to complete the sealing.

[0074] In some specific embodiments of the present invention, the sealing device 150 may include a pair of movable parts to prevent the packaging bag from being pulled.

[0075] In some specific embodiments of the present invention, the sealing device 150 may be equipped with a nitrogen injection device to remove air and prevent the nuts from oxidizing and deteriorating.

[0076] Reference Figure 9 For the conveying device 160, the conveying device 160 includes a conveyor belt 360 and a plurality of drive wheels supporting the conveyor belt 360, one of which is connected to a power source and can drive the conveyor belt 360 to move, so as to facilitate the conveying of nuts.

[0077] In some specific embodiments of the present invention, a guide hopper can be provided on the material receiving side of the conveyor belt 360, which occupies less space at the bottom of the turntable.

[0078] Reference Figure 10 The present invention also aims to provide an embodiment of an automatic nut bagging method.

[0079] In this embodiment, the automatic nut bagging method includes a bag feeding step S1, a bag opening step S2, a bag opening step S3, a material filling step S4, a sealing step S5, and a material unloading step S6.

[0080] In the bag supply step S1, the bag supply device 110 supplies the stacked packaging bags one by one to the turntable device 100.

[0081] In the bag opening step S2, the turntable device 100 transfers the packaging bag to the bag opening device 120, which then attracts the two sides of the packaging bag, causing the two sides of the packaging bag to move away from each other to open the bag.

[0082] In the bag-opening step S3, the bag-opening claw 290 extends into the packaging bag and opens it up. The bag-opening claw 290 rotates synchronously with the turntable device 100 so that the packaging bag is located at the bottom of the filling device 140.

[0083] In the loading step S4, the lifting frame 190 rises to its highest point, the receiving tray 180 supports the packaging bag, the loading device 140 descends, the loading device 140 extends into the packaging bag, and the loading device 140 puts the nuts into the packaging bag. The bag support claw 290 rises and rotates to the bag opening device 120, the lifting frame 190 descends, and when the lifting frame 190 descends to its lowest point, the receiving tray 180 separates from the packaging bag. The first pressure sensor 200 detects the final pressure and transmits the final pressure value to the controller. When the final pressure value exceeds the set value, the controller issues an alarm.

[0084] In the sealing step S5, when the final pressure value does not exceed the set value, the turntable device 100 rotates the packaging bag to the sealing device 150, and the sealing device 150 seals the packaging bag.

[0085] In the unloading step S6, the turntable device 100 rotates the packaging bag from the sealing device 150 to above the conveying device 160, the turntable device 100 releases the packaging bag, and the conveying device 160 removes the packaging bag.

[0086] In some specific embodiments of the present invention, the turntable device 100 may include multiple pairs of side clamps 250, one pair of side clamps 250 clamping two sides of the packaging bag, the side clamps 250 being connected to a support arm 260, the support arm 260 being fixed to the turntable of the turntable device 100, and a second pressure sensor being provided between the support arm 260 and the turntable, the second pressure sensor being electrically connected to the controller. The material receiving warning device 170 includes a movable seat 270 connected to the lifting frame 190 and an arc-shaped track 280 connected to the movable seat 270. The arc-shaped track 280 extends circumferentially along the turntable device 100 and is located between the loading device 140 and the sealing device 150.

[0087] In use, when the value of the second pressure sensor decreases, the moving seat 270 moves along the arc track 280 to the bottom of the corresponding packaging bag, the lifting seat rises, the receiving tray 180 supports the packaging bag, the side clamp 250 releases its clamp, the receiving tray 180 receives the packaging bag, the first pressure sensor 200 checks the pressure value and updates the preset value, so as to avoid the receiving warning device 170 from erroneously alarming when filling another packaging bag.

[0088] When the packaging bag is removed from the receiving tray 180, the controller can automatically or manually restore the preset value to ensure the reliability of the receiving warning function and meet the filling needs of the next packaging bag.

[0089] In this embodiment, the part of the turntable device 100 used to hold the packaging bag has a height difference from the parts of other devices that act on the packaging bag, so they can work smoothly without affecting each other.

[0090] In this embodiment, rotational motion can be achieved by a motor, while linear motion such as lifting and lowering can be achieved by a combination of a motor and a screw sleeve.

[0091] In the description of this specification, the references to terms such as "an embodiment, some embodiments, illustrative embodiments, example, specific example, or examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0092] The terms "first," "second," "third," "fourth," etc. (if applicable) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein.

[0093] It should also be noted that, in the description of this specification, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0094] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may also include other steps or units that are not explicitly listed or that are inherent to such processes, methods, products, or apparatus.

[0095] Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0096] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A device for automatically bagging nuts, characterized in that, The device includes a turntable device (100), a bag supply device (110), a bag opening device (120), a filling device (140), a sealing device (150), and a conveying device (160) arranged circumferentially along the turntable device (100); the bag supply device (110) is used to supply packaging bags to the turntable device (100); the turntable device (100) is used to clamp the two sides of the packaging bag and rotate the packaging bag to the respective devices; the bag opening device (120) is used to attract the two sides of the packaging bag and separate the two sides from each other to open the bag; the filling device (140) is used to put nuts into the packaging bag; the sealing device (150) is used to seal the packaging bag containing nuts; and the conveying device (160) is used to convey and remove the sealed packaging bag. The turntable device (100) further includes a bag-supporting mechanism (130), which reciprocates between the bag-opening device (120) and the filling device (140). The bag-supporting mechanism (130) includes a pair of bag-supporting claws (290), which can extend into the packaging bag and rotate relative to each other to open the packaging bag. The bag-supporting mechanism (130) includes a bag-supporting arm (300) extending radially along the turntable of the turntable device (100). One end of the bag-supporting arm (300) is provided with a bag-supporting claw (290), and the other end of the bag-supporting arm (300) is located at the center of the turntable. A control shaft (310) is provided at the center of the turntable. The top end of the control shaft (310) is connected and fixed to the bag-supporting arm (300). The control shaft (310) can be raised, lowered, and rotated so that a pair of bag-supporting claws (290) reciprocate between the bag-opening device (120) and the filling device (140).

2. The device for automatic bagging of nuts according to claim 1, characterized in that: The bag opening device (120) includes a front suction plate (320) and a rear suction plate (330) arranged in the radial direction of the turntable device (100). The front suction plate (320) and the rear suction plate (330) can move closer to each other to adsorb the packaging bag, and the front suction plate (320) and the rear suction plate (330) can move further away from each other so that the two sides of the packaging bag are far apart to open the bag.

3. The device for automatic bagging of nuts according to claim 1, characterized in that: The bag feeding device (110) includes a first suction arm (210), a second suction arm (220), and a clamping and translating seat (230); the first suction arm (210) is used to pick up the packaging bag and switch the packaging bag from a flat state to an inclined state; the second suction arm (220) is used to pick up the packaging bag and switch the packaging bag from an inclined state to an upright state; the clamping and translating seat (230) is used to clamp the upright packaging bag and move the packaging bag to the turntable device (100).

4. The device for automatic bagging of nuts according to claim 3, characterized in that: The first suction arm (210) includes a first suction plate and a first negative pressure pipeline connected to the first suction plate. The second suction arm (220) includes a second suction plate and a second negative pressure pipeline connected to the second suction plate. At least one of the first negative pressure pipeline and the second negative pressure pipeline is connected to a pressure gauge, and the pressure gauge is electrically connected to the controller. And / or, the clamping translation seat (230) includes a pair of jaws (240) for clamping the top edge of the packaging bag, the jaws (240) being capable of flipping and releasing the packaging bag, and the turntable device (100) including multiple pairs of side clamps (250), one pair of side clamps (250) clamping two sides of the packaging bag.

5. The device for automatic bagging of nuts according to claim 1, characterized in that, The turntable device (100) includes multiple pairs of side clamps (250), one pair of side clamps (250) clamps two sides of the packaging bag, the side clamps (250) are connected to a support arm (260), the support arm (260) is fixed to the turntable of the turntable device (100), a second pressure sensor is provided between the support arm (260) and the turntable, and the second pressure sensor is electrically connected to the controller.

6. The device for automatic bagging of nuts according to claim 1, characterized in that, The device for automatic nut bagging also includes a receiving warning device (170), which is located at the bottom of the filling device (140). The receiving warning device (170) includes a lifting frame (190), a receiving tray (180) disposed on the lifting frame (190), and a first pressure sensor (200) disposed at the bottom of the receiving tray (180). The first pressure sensor (200) is used to detect the pressure of the receiving tray (180) on the lifting frame (190). The first pressure sensor (200) is electrically connected to the controller of the device for automatic nut bagging. Before the feeding device (140) puts the nuts into the packaging bag, the lifting frame (190) rises to its highest point, and the receiving tray (180) supports the packaging bag; when the feeding device (140) puts the nuts into the packaging bag, the lifting frame (190) descends; when the lifting frame (190) descends to its lowest point, the receiving tray (180) separates from the packaging bag, and the first pressure sensor (200) transmits the final pressure value to the controller. When the final pressure value exceeds the set value, the controller issues an alarm.

7. The device for automatic bagging of nuts according to claim 6, characterized in that, The material receiving warning device (170) includes a movable seat (270) connected to the lifting frame (190) and an arc-shaped track (280) connected to the movable seat (270). The arc-shaped track (280) extends circumferentially along the turntable device (100) and is located between the loading device (140) and the sealing device (150).

8. An automatic nut bagging method, characterized in that: Automatic bagging is performed using the equipment for automatic bagging of nuts as described in any one of claims 1 to 7; The automatic nut bagging method includes: In the bag feeding step, the bag feeding device (110) feeds the stacked packaging bags one by one to the turntable device (100). In the bag opening step, the turntable device (100) transfers the packaging bag to the bag opening device (120), and the bag opening device (120) attracts the two sides of the packaging bag so that the two sides of the packaging bag move away from each other to open the bag; In the bag-opening step, the control shaft (310) drives the bag-opening arm (300) and the bag-opening claw (290) to descend. The bag-opening claw (290) extends into the packaging bag and opens it up. The bag-opening claw (290) rotates synchronously with the turntable device (100) so that the packaging bag is located at the bottom of the filling device (140). In the filling step, the filling device (140) descends and extends into the packaging bag. The filling device (140) puts the nuts into the packaging bag. The control shaft (310) drives the bag support arm (300) to rise and rotate, so that the bag support claw (290) rises and rotates back to the bag opening device (120). In the sealing step, after the filling device (140) has finished filling, the turntable device (100) rotates the packaging bag to the sealing device (150), and the sealing device (150) seals the packaging bag. In the unloading step, the turntable device (100) rotates the packaging bag from the sealing device (150) to above the conveying device (160), the turntable device (100) releases the packaging bag, and the conveying device (160) removes the packaging bag.

9. The automatic nut bagging method according to claim 8, characterized in that: The device for automatic nut bagging also includes a receiving warning device (170), which is located at the bottom of the filling device (140). The receiving warning device (170) includes a lifting frame (190), a receiving tray (180) disposed on the lifting frame (190), and a first pressure sensor (200) disposed at the bottom of the receiving tray (180). The first pressure sensor (200) is used to detect the pressure of the receiving tray (180) on the lifting frame (190). The first pressure sensor (200) is electrically connected to the controller of the device for automatic nut bagging. Before the filling device (140) puts the nuts into the packaging bag, the lifting frame (190) rises to its highest point, and the receiving tray (180) supports the packaging bag; when the filling device (140) puts the nuts into the packaging bag, the lifting frame (190) descends; when the lifting frame (190) descends to its lowest point, the receiving tray (180) separates from the packaging bag, and the first pressure sensor (200) transmits the final pressure value to the controller; when the final pressure value exceeds the set value, the controller issues an alarm. In the loading step, the loading device (140) descends, and before that, the lifting frame (190) rises to its highest point, and the receiving tray (180) supports the packaging bag; In the filling step, the bag support claw (290) rises and rotates to the bag opening device (120), and then the lifting frame (190) descends. When the lifting frame (190) descends to the lowest point, the receiving tray (180) separates from the packaging bag. The first pressure sensor (200) detects the final pressure and transmits the final pressure value to the controller. When the final pressure value exceeds the set value, the controller issues an alarm.

10. The automatic nut bagging method according to claim 9, characterized in that: The turntable device (100) includes multiple pairs of side clamps (250), one pair of side clamps (250) clamps two sides of the packaging bag, the side clamps (250) are connected to a support arm (260), the support arm (260) is fixed to the turntable of the turntable device (100), a second pressure sensor is provided between the support arm (260) and the turntable, and the second pressure sensor is electrically connected to the controller; The material receiving warning device (170) includes a movable seat (270) connected to the lifting frame (190) and an arc-shaped track (280) connected to the movable seat (270). The arc-shaped track (280) extends circumferentially along the turntable device (100) and is located between the loading device (140) and the sealing device (150). When the value of the second pressure sensor decreases, the moving seat (270) moves along the arc track (280) to the bottom of the corresponding packaging bag, the lifting frame (190) rises, the receiving tray (180) supports the packaging bag, the side clamp (250) releases its clamp, the receiving tray (180) receives the packaging bag, and the first pressure sensor (200) checks the pressure value and updates the preset value.

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