Automatic nut bagging equipment and automatic bagging method thereof

Abstract

The invention discloses automatic nut bagging equipment and an automatic bagging method thereof. The automatic nut bagging equipment comprises a rotating disc device, a bag supply device, a bag opening device, a charging device, a sealing device and a conveying device, wherein the bag supply device, the bag opening device, the charging device, the sealing device and the conveying device are arranged in the circumferential direction of the rotating disc device. The automatic nut bagging equipment further comprises a material receiving early warning device, the material receiving early warning device is located at the bottom of the loading device, and the material receiving early warning device comprises a lifting frame, a material receiving disc arranged on the lifting frame and a first pressure sensor arranged at the bottom of the material receiving disc. The first pressure sensor is used for detecting the pressure of the material receiving disc on the lifting frame, and the first pressure sensor is electrically connected with a controller of the automatic nut bagging equipment; according to the automatic nut bagging equipment and the automatic bagging method thereof, damaged packaging bags can be recognized, and the situation that nuts are spilled out and polluted is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging equipment, and particularly relates to a nut automatic bagging device and its automatic bagging method. Background Art

[0002] The prior art provides a patent document, which relates to a nut packaging device and a packaging method. The publication date of this 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.

[0003] In this patent document, the nut packaging machine includes a turntable mechanism and a bag supply mechanism, a bag mouth opening mechanism, a bagging part, etc. arranged circumferentially around the turntable mechanism.

[0004] That is, the prior art supplies a packaging bag with a single opening to the turntable, and the turntable rotates the packaging bag to each station to sequentially perform operations such as bag opening, feeding, sealing, and conveying.

[0005] However, when the incoming packaging bags are defective, such as being damaged, the nut packaging machine will still continue to perform the bagging operation, and the nuts loaded into the packaging bags will spill out and are easily contaminated. Summary of the Invention

[0006] The present invention aims to solve at least one of the technical problems existing in the prior art. For this reason, the present invention provides a nut automatic bagging device that can identify damaged packaging bags and avoid nuts from spilling out and being contaminated.

[0007] The present invention also provides a nut automatic bagging method using the above nut automatic bagging device.

[0008] The nut automatic bagging device according to the first aspect embodiment of the present invention includes a turntable device, a bag supply device, a bag opening device, a feeding device, a sealing device, and a conveying device arranged circumferentially along the turntable device; the bag supply device is used to provide packaging bags to the turntable device, the turntable device is used to clamp two sides of the packaging bag and rotate the packaging bag to each device, the bag opening device is used to adsorb two sides of the packaging bag and separate the two sides from each other to open the bag, the feeding device is used to put nuts into the packaging bag, the sealing device is used to seal the packaging bag filled with nuts, and the conveying device is used to convey and remove the sealed packaging bag; The automatic nut bagging device further includes a receiving warning device, which is located at the bottom of the loading device. The receiving warning device includes a lifting frame, a receiving tray arranged on the lifting frame, and a first pressure sensor arranged 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 the first pressure sensor is electrically connected to the controller of the automatic nut bagging device; Before the loading device puts nuts into the packaging bag, the lifting frame rises to the highest point, and the receiving tray supports the packaging bag; when the loading device puts nuts into the packaging bag, the lifting frame descends; when the lifting frame descends to the 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 gives an alarm.

[0009] The automatic nut bagging device according to the embodiment of the present invention has at least the following beneficial effects: By setting the receiving warning device in the present invention, before the loading operation, the lifting frame can drive the receiving tray to rise, so that the receiving tray 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, especially, the hard pulling between the packaging bag and the turntable device can be reduced, the packaging bag can be protected, and the packaging bag can be prevented from being damaged.

[0010] In addition, for the case where there are local holes in the packaging bag, the receiving tray supports the packaging bag, which also makes it easier for the nuts to leak from the holes, facilitating the identification of the damaged packaging bag. When the packaging bag is suspended, the holes are in multiple lateral directions, and the nuts are likely to fall to the bottom of the bag rather than pass through the holes, making it difficult to be identified.

[0011] In addition, for the case where the bottom of the packaging bag is not sealed, the identification setting can be simplified, and the manufacturing cost can be reduced.

[0012] If a visual recognition method is used to confirm that the bottom of the packaging bag is not sealed, the position of the bottom of the packaging bag changes randomly, and it is not easy to obtain a clear image. Moreover, the image difference between the sealed and unsealed bottom of the packaging bag is very small, the recognition is prone to errors, the reliability is low, and the manufacturing cost is extremely high.

[0013] By setting the receiving warning device in the present invention, when the loading operation is carried out, the lifting frame can drive the receiving tray to descend, so that the space of the packaging bag gradually becomes larger to accommodate a set number of nuts, avoiding nut overflow and meeting the requirements of bagging and packaging.

[0014] By providing a first pressure sensor in the present invention, when the packaging bag is damaged and nuts fall into the receiving tray, the pressure value of the first pressure sensor will change, enabling timely warning to confirm whether the incoming situation of the packaging bag and the operation of the nut automatic bagging device are normal.

[0015] In some operating conditions, the nut automatic bagging device may supply two packaging bags at a time. The filling device will fill the nuts between the two packaging bags, causing some nuts to spill outside the packaging bags.

[0016] In some operating conditions, the nut automatic bagging device may run empty. That is, although there is no packaging bag on the turntable device, the filling device still performs the filling operation, causing the nuts to directly fall onto the surface of the device or the ground.

[0017] By providing a receiving tray in the present invention, the spilled nuts can also be collected, preventing the nuts from falling onto the surface of the device or the ground, reducing waste, and preventing the nuts from being contaminated.

[0018] The present invention also provides a nut automatic bagging method with the above beneficial effects.

[0019] A nut automatic bagging device according to an embodiment of the first aspect of the present invention The bag supply device includes a first suction and swing arm, a second suction and swing arm, and a clamping and translation seat; the first suction and swing arm is used to suck the packaging bag and switch the packaging bag from a flat state to an inclined state; the second suction and swing arm is used to suck the packaging bag and switch the packaging bag from an inclined state to an upright state; the clamping and translation seat is used to clamp the upright packaging bag and move the packaging bag to the turntable device.

[0020] A nut automatic bagging device according to an embodiment of the first aspect of the present invention The first suction and swing arm includes a first suction tray and a first negative pressure pipeline communicating with the first suction tray. The second suction and swing arm includes a second suction tray and a second negative pressure pipeline communicating with the second suction tray. At least one of the first negative pressure pipeline and the second negative pressure pipeline is connected with a pressure gauge, and the pressure gauge is electrically connected to the controller; And / or, the clamping and translation seat includes a pair of clamping claws. The clamping claws are used to clamp the top edge of the packaging bag. The clamping claws can flip to clamp the packaging bag and release the clamping. The turntable device includes multiple pairs of side clamps, and a pair of side clamps clamp the two side edges of the packaging bag.

[0021] A nut automatic bagging device according to an embodiment of the first aspect of the present invention The turntable device includes multiple pairs of side clamps. One pair of the side clamps clamps two sides of the packaging bag. The side clamps are connected with support arms, the support arms are fixed on the turntable of the turntable device, and a second pressure sensor is arranged between the support arms and the turntable. The second pressure sensor is electrically connected with the controller.

[0022] The nut automatic bagging equipment according to the first aspect embodiment of the present invention The material receiving warning device includes a moving seat connected to the lifting frame and an arc track connected to the moving seat. The arc track extends along the circumferential direction of the turntable device, and the arc track is located between the bagging device and the sealing device.

[0023] The nut automatic bagging equipment according to the first aspect embodiment of the present invention The turntable device further includes a bag supporting mechanism. The bag supporting mechanism reciprocates between the bag opening device and the bagging device. The bag supporting mechanism includes a pair of bag supporting claws. The pair of bag supporting claws can extend into the packaging bag, and the pair of bag supporting claws rotate relative to each other to open the packaging bag.

[0024] The nut automatic bagging equipment according to the first aspect embodiment of the present invention 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 the bag supporting claw, and the other end of the bag supporting arm is located at the center of the turntable. A control shaft is arranged at the center of the turntable. The top end of the control shaft is fixedly connected with the bag supporting arm. The control shaft can lift and rotate, so that the pair of bag supporting claws reciprocate between the bag opening device and the bagging device.

[0025] The nut automatic bagging equipment according to the first aspect embodiment of the present invention The bag opening device includes a front suction bag disc and a rear suction bag disc arranged along the radial direction of the turntable device. The front suction bag disc and the rear suction bag disc can translate and approach each other to adsorb the packaging bag, and the front suction bag disc and the rear suction bag disc can translate and move away from each other to separate two sides of the packaging bag to open the bag.

[0026] The nut automatic bagging method according to the second aspect embodiment of the present invention Using the nut automatic bagging equipment described in any one of the above, the turntable device further includes a bag supporting mechanism. The bag supporting mechanism reciprocates between the bag opening device and the bagging device. The bag supporting mechanism includes a pair of bag supporting claws. The pair of bag supporting claws can extend into the packaging bag, and the pair of bag supporting claws rotate relative to each other to open the packaging bag The nut automatic bagging method includes: Bag supply step, in which the bag supply device supplies the stacked packaging bags to the turntable device one by one; Bag opening step, in which the turntable device transfers the packaging bag to the bag opening device, and the bag opening device adsorbs two sides of the packaging bag, so that the two sides of the packaging bag move away from each other to open the bag; Bag supporting step, in which the bag supporting claws extend into the packaging bag and expand, and the bag supporting claws rotate synchronously with the turntable device, so that the packaging bag is located at the bottom of the loading device; Loading step, in which the lifting frame rises to the highest point, the receiving tray supports the packaging bag, the loading device descends, the loading device extends into the packaging bag, the loading device puts nuts into the packaging bag, the bag supporting claws rise and rotate back to the bag opening device, the lifting frame descends, when the lifting frame descends to the lowest point, the receiving tray is separated from the packaging bag, the first pressure sensor detects the final pressure, the first pressure sensor transmits the final pressure value to the controller, when the final pressure value exceeds the set value, the controller gives an alarm; Sealing step, when the final pressure value does not exceed the set value, the turntable device rotates the packaging bag to the sealing device, and the sealing device seals the packaging bag; Unloading step, in which 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 moves the packaging bag away.

[0027] According to the nut automatic bagging method of the second aspect embodiment of the present invention, 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 with support arms, the support arms are fixed on the turntable of the turntable device, and a second pressure sensor is arranged between the support arms and the turntable, and the second pressure sensor is electrically connected with the controller; The receiving warning device includes a moving seat connected to the lifting frame and an arc track connected to the moving seat, the arc track extends along the circumference of the turntable device, and the arc track is located between the loading device and the sealing device; When the value of the second pressure sensor decreases, the moving seat moves along the arc track to below the corresponding packaging bag, the lifting seat rises, the receiving tray supports the packaging bag, the side clamps release the clamping, the receiving tray receives the packaging bag, and the first pressure sensor checks the pressure value and updates the preset value.

[0028] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. Brief Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 It is a schematic diagram of the principle structure of the nut automatic bagging device according to the embodiment of the present invention; Figure 2 It is Figure 1 a schematic diagram of the principle of the bag supply device in; Figure 3 It is Figure 1 a schematic diagram of the principle of the turntable device in; Figure 4 It is Figure 1 a schematic diagram of the principle of the bag opening device in; Figure 5 It is Figure 1 a schematic diagram of the principle of the bag supporting mechanism in; Figure 6 It is Figure 1 a schematic diagram of the principle of the feeding device and the receiving warning device in; Figure 7 It is Figure 6 a schematic diagram of the structure of the receiving warning device in; Figure 8 It is Figure 1 a schematic diagram of the principle of the sealing device in; Figure 9 It is Figure 1 a schematic diagram of the principle of the conveying device in; Figure 10 It is the working flow chart of the nut automatic bagging method applying Figure 1 the nut automatic bagging device.

[0031] Reference numerals: turntable device 100; bag supply device 110; bag opening device 120; bag supporting mechanism 130; feeding device 140; sealing device 150; conveying device 160; receiving warning device 170; receiving tray 180; lifting frame 190; first pressure sensor 200; first suction arm 210; second suction arm 220; clamping translation seat 230; clamping jaw 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 disc 320; rear suction bag disc 330; fixed clamp 340; movable clamp 350; conveyor belt 360. Detailed Embodiments

[0032] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where 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.

[0033] In the description of the present invention, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0034] In the description of the present invention, the meaning of "a number of" is one or more, the meaning of "a plurality of" is two or more, and understandings such as "greater than", "less than", "exceeding", etc. do not include the recited number, and understandings such as "above", "below", "within", etc. include the recited number. If there is a description of "first" and "second", this is only used to distinguish technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0035] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The nut automatic bagging device and its automatic bagging method according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0037] Refer to Figure 1 , the present invention aims to provide an embodiment of a nut automatic bagging device.

[0038] In this embodiment, the nut automatic bagging device includes a turntable device 100, a bag supply device 110 arranged circumferentially along the turntable device 100, a bag opening device 120, a feeding device 140, a sealing device 150, and a conveying device 160. The bag supply 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 each device. The bag opening device 120 is used to adsorb the two sides of the packaging bag and separate the two sides from each other to open the bag. The feeding device 140 is used to put nuts into the packaging bag. The sealing device 150 is used to seal the packaging bag filled with nuts. The conveying device 160 is used to convey and remove the sealed packaging bag.

[0039] Referring to Figure 2 , for the bag supply device 110, the bag supply device 110 includes a first suction and feeding swing arm 210, a second suction and feeding swing arm 220, and a clamping and translation seat 230. The first suction and feeding swing arm 210 is used to suck the packaging bag and switch the packaging bag from a flat state to an inclined state. The second suction and feeding swing arm 220 is used to suck the packaging bag and switch the packaging bag from an inclined state to an upright state. The clamping and translation seat 230 is used to clamp the upright packaging bag and move the packaging bag to the turntable device 100.

[0040] That is to say, the first suction and feeding swing arm 210 first sucks the packaging bag, and then the first suction and feeding swing arm 210 rotates, so that the packaging bag is switched from a flat state to an inclined state. Then, the second suction and feeding swing arm 220 sucks the inclined packaging bag, and then the second suction and feeding swing arm 220 rotates, so that the packaging bag is switched from an inclined state to an upright state. Then, the clamping and translation seat 230 clamps the upright packaging bag, and then the clamping and translation seat 230 moves the packaging bag to the turntable device 100.

[0041] Finally, the turntable device 100 clamps the packaging bag. The clamping position of the turntable device 100 is different from the position clamped by the clamping and translation seat 230. The clamping position of the turntable device 100 is the two sides of the packaging bag, which is convenient for subsequent bag opening and bag stretching.

[0042] It is easy to understand that the packaging bag is gradually switched from a flat state to an upright state, which does not affect the placement of the incoming material and also meets the bagging requirements, making the bagging process smooth and reliable.

[0043] At the same time, the packaging bag is gradually switched from a flat state to an upright state, which is also beneficial to the separation of the packaging bags and reduces the occurrence of the situation where more than one packaging bag is supplied at a time.

[0044] In some specific embodiments of the present invention, the first suction swing arm 210 can include a first suction plate and a first negative pressure pipeline connected to the first suction plate, and the second suction swing arm 220 can include a second suction plate and a second negative pressure pipeline connected to the second suction plate, and 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.

[0045] It is easy to understand that, by providing a pressure gauge, this embodiment can detect the adsorption pressure of the first negative pressure pipeline and the second negative pressure pipeline. When a hole exists in the packaging bag and causes negative pressure leakage, an early warning can be issued through pressure changes.

[0046] At the same time, since the positions adsorbed by the first suction plate and the second suction plate do not overlap, the detection area can be expanded to avoid the failure of pressure gauge detection due to tricky hole positions.

[0047] In some specific embodiments of the present invention, the number of the first suction swing arm 210 and the number of the second suction swing arm 220 can be more than one, so that the packaging bag can be adsorbed at multiple points to reduce the possibility of the packaging bag rotating relative to the suction plate.

[0048] For the material clamping and translating seat 230, the material clamping and translating seat 230 can include a pair of clamping claws 240, the clamping claws 240 are used to clamp the top edge of the packaging bag, the clamping claws 240 can flip the clamped packaging bag and release the clamping, and the turntable device 100 includes multiple pairs of side clamps 250, and a pair of side clamps 250 clamp the two side edges of the packaging bag.

[0049] It is easy to understand that the gripper 240 can be turned over, which can meet the needs of clamping the packaging bag and avoid the packaging bag. There is no need to lift the gripper 240, which can simplify the material clamping translation seat 230. In some specific embodiments of the present invention, the first material suction swing arm 210, the second material suction swing arm 220 and the material clamping translation seat 230 can be connected to a crank connecting rod structure or an eccentric wheel structure, so that the first material suction swing arm 210, the second material suction swing arm 220 and the material clamping translation seat 230 are linked to simplify the power configuration, reduce the manufacturing cost, and at the same time, have a strict timing sequence to meet the bag supply needs.

[0050] Reference Figure 3 For the turntable device 100, the turntable device 100 includes multiple pairs of side clamps 250, a pair of side clamps 250 clamps two side edges 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 arranged between the support arms 260 and the turntable, and the second pressure sensor is electrically connected to the controller.

[0051] Since the turntable device 100 is provided with side clamps 250, the side clamps 250 restrain the sides of the packaging bag. At the same time, the opening of the packaging bag is not restricted, facilitating operations such as opening the bag, expanding the bag, filling, and sealing.

[0052] Meanwhile, a second pressure sensor is provided, which also facilitates monitoring the situation of the packaging bag during operation. If nuts fall out of 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, and the warning is not limited to being given at the filling position.

[0053] Referring to Figure 4 , for the bag opening device 120, the bag opening device 120 includes a front suction bag disc 320 and a rear suction bag disc 330 arranged along the radial direction of the turntable device 100. The front suction bag disc 320 and the rear suction bag disc 330 can translate towards each other to adsorb the packaging bag, and the front suction bag disc 320 and the rear suction bag disc 330 can translate away from each other to separate the two sides of the packaging bag to open the bag.

[0054] In some specific embodiments of the present invention, the front suction bag disc 320 and the rear suction bag disc 330 can adsorb the top edge of the packaging bag to complete bag opening.

[0055] In some specific embodiments of the present invention, the support arm 260 can be lower than the front suction bag disc 320. Therefore, the bag opening device 120 does not need to lift the front suction bag disc 320 and the rear suction bag disc 330, which is beneficial to simplifying the structure and reducing the manufacturing cost.

[0056] Referring to Figure 5 , for the bag expanding mechanism 130, the bag expanding mechanism 130 includes a bag expanding arm 300 extending radially along the turntable of the turntable device 100. One end of the bag expanding arm 300 is provided with a bag expanding claw 290, and the other end of the bag expanding 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 fixedly connected to the bag expanding arm 300. The control shaft 310 can be lifted and rotated to enable a pair of bag expanding claws 290 to reciprocate between the bag opening device 120 and the filling device 140.

[0057] It is easy to understand that when the control shaft 310 descends, a pair of bag expanding claws 290 can extend into the packaging bag, and the pair of bag expanding claws 290 rotate relative to each other to expand the packaging bag. Then, the bag expanding mechanism 130 and the turntable rotate together, so that the bag expanding claws 290 and the packaging bag are both located below the filling device 140, facilitating the filling device to be inserted into the packaging bag.

[0058] When filling is completed, the control shaft 310 rises, causing the bag expanding claws 290 to disengage from the packaging bag. Then, the control shaft 310 rotates, causing the bag expanding claws 290 to return to the position of the bag opening device 120.

[0059] In some specific embodiments of the present invention, during loading, the bag-supporting claws 290 can be continuously located inside the packaging bag, avoiding the movement of the bag mouth of the packaging bag driven by the gravity of the nuts, and avoiding the misalignment of the bag mouth of the packaging bag with the loading device 140, resulting in the nuts being scattered outside the packaging bag.

[0060] Referring to Figure 6 , for the loading device 140, the receiving device includes a liftable loading hopper directly related thereto. After the loading hopper descends, it will insert into the packaging bag, facilitating the loading of nuts into the packaging bag and avoiding the nuts being scattered outside.

[0061] When the loading hopper ascends, the loading hopper moves away from the packaging bag, without affecting the rotation of the packaging bag following the turntable.

[0062] Referring to Figure 6 and 7 , for the receiving warning device 170, the nut automatic bagging equipment further includes a receiving warning device 170. The receiving warning device 170 is located at the bottom of the loading device 140. The receiving warning device 170 includes a lifting frame 190, a receiving tray 180 provided on the lifting frame 190, and a first pressure sensor 200 provided 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, and the first pressure sensor 200 is electrically connected to the controller of the nut automatic bagging equipment.

[0063] During use, before the loading device 140 puts nuts into the packaging bag, the lifting frame 190 ascends to the highest point, and the receiving tray 180 supports the packaging bag; when the loading device 140 puts nuts into the packaging bag, the lifting frame 190 descends; when the lifting frame 190 descends to the lowest point, the receiving tray 180 separates from the packaging bag, and the first pressure sensor 200 transmits the final state pressure value to the controller. When the final state pressure value exceeds the set value, the controller gives an alarm.

[0064] In summary, by setting the receiving warning device 170, before the loading operation, the lifting frame 190 can drive the receiving tray 180 to ascend, 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. In particular, the hard pulling between the packaging bag and the turntable device 100 can be reduced, protecting the packaging bag and avoiding damage to the packaging bag.

[0065] In addition, for the case where there are local holes in the packaging bag, the receiving tray 180 supports the packaging bag, which also makes it easier for the nuts to leak from the holes, facilitating the identification of the damaged situation of the packaging bag. When the packaging bag is suspended, the holes are in multiple lateral directions, and the nuts are likely to fall to the bottom of the bag rather than pass through the holes, making it difficult to be identified.

[0066] In addition, for the case where the bottom of the packaging bag is not sealed, the identification setting can be simplified, reducing the manufacturing cost.

[0067] If a visual recognition method is used to confirm the unsealed bottom of the packaging bag, the position of the bottom of the packaging bag changes randomly, and it is not easy to obtain a clear image. Moreover, the image difference between the sealed and unsealed bottom of the packaging bag is very small, the recognition is prone to errors, the reliability is low, and the manufacturing cost is extremely high.

[0068] In the present invention, by providing a material receiving warning device 170, when the loading operation is performed, the lifting frame 190 can drive the material receiving tray 180 to descend, so that the space of the packaging bag gradually becomes larger to accommodate a set number of nuts, avoiding nut overflow and meeting the requirements of bagging and packaging.

[0069] In the present invention, by providing a first pressure sensor 200, when the packaging bag is damaged and nuts fall into the material receiving tray 180, the pressure value of the first pressure sensor 200 will change, and early warning can be given in time to confirm whether the incoming material situation of the packaging bag and the operation of the nut automatic bagging equipment are normal.

[0070] In some operating conditions, the nut automatic bagging equipment may supply two packaging bags at a time. The loading device 140 will load nuts between the two packaging bags, causing some nuts to spill outside the packaging bag.

[0071] In some operating conditions, the nut automatic bagging equipment may run empty, that is, although there is no packaging bag on the turntable device 100, the loading device 140 still performs the loading operation, causing the nuts to directly fall onto the surface of the equipment or the ground.

[0072] In the present invention, by providing the material receiving tray 180, the spilled nuts can also be collected, avoiding the nuts from falling onto the surface of the equipment or the ground, reducing waste, and preventing the nuts from being contaminated.

[0073] In some specific embodiments of the present invention, the material receiving warning device 170 may include a moving seat 270 connected to the lifting frame 190 and an arc track 280 connected to the moving seat 270. The arc track 280 extends along the circumference of the turntable device 100 and is located between the loading device 140 and the sealing device 150.

[0074] It is easy to understand that in this embodiment, by providing the arc track 280, when the packaging bag is partially broken due to the continuous action of nuts before sealing, or when nuts fall during the transfer of the packaging bag to the sealing device 150, the moving seat 270 can move along the arc track 280 to the lower part of the corresponding packaging bag, taking away the defective packaging bag and the corresponding nuts, avoiding affecting the bagging operation and preventing the nuts from being contaminated or wasted.

[0075] At the same time, the arc track 280 will match the shape of the turntable, reducing the occupied space and facilitating the layout.

[0076] For the power drive of the movable seat 270, a section of gear ring can be provided on the arc track 280, and the movable seat 270 is provided with a motor and a gear. The motor drives the gear to rotate, and the gear meshes with the gear ring to drive the movable seat 270 to move.

[0077] Referring to Figure 8 , for the sealing device 150, the sealing device 150 may include a fixed clamp 340 and a movable member. The movable clamp 350 and the fixed clamp 340 approach each other to clamp and heat the packaging bag, and the sealing can be completed.

[0078] In some specific embodiments of the present invention, the sealing device 150 may include a pair of movable members to avoid pulling the packaging bag.

[0079] In some specific embodiments of the present invention, the sealing device 150 may be provided with a nitrogen adding device to exclude air and avoid oxidation and deterioration of nuts.

[0080] Referring to Figure 9 , for the conveying device 160, the conveying device 160 includes a conveyor belt 360 and a plurality of driving wheels supporting the conveyor belt 360. One of the driving wheels is connected to power and can drive the conveyor belt 360 to move, facilitating the conveyance of nuts.

[0081] In some specific embodiments of the present invention, a feed hopper may be provided on the incoming material side of the conveyor belt 360, occupying less space at the bottom of the turntable.

[0082] Referring to Figure 10 , the present invention also aims to provide an embodiment of a method for automatically bagging nuts.

[0083] In this embodiment, the method for automatically bagging nuts includes a bag supply step S1, a bag opening step S2, a bag stretching step S3, a feeding step S4, a sealing step S5, and a discharging step S6.

[0084] Among them, in the bag supply step S1, the bag supply device 110 supplies the stacked packaging bags to the turntable device 100 one by one.

[0085] Among them, in the bag opening step S2, the turntable device 100 transfers the packaging bag to the bag opening device 120, and the bag opening device 120 adsorbs two sides of the packaging bag, so that the two sides of the packaging bag move away from each other to open the bag.

[0086] Among them, in the bag stretching step S3, the bag stretching claws 290 extend into the packaging bag and open, and the bag stretching claws 290 rotate synchronously with the turntable device 100, so that the packaging bag is located at the bottom of the feeding device 140.

[0087] Among them, in the feeding step S4, the lifting frame 190 rises to the highest point, the receiving tray 180 supports the packaging bag, the feeding device 140 descends, the feeding device 140 extends into the packaging bag, the feeding device 140 puts nuts into the packaging bag, the bag-supporting claws 290 rise and rotate to the bag-opening device 120, 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 state pressure, the first pressure sensor 200 transmits the final state pressure value to the controller, and when the final state pressure value exceeds the set value, the controller gives an alarm.

[0088] Among them, in the sealing step S5, when the final state 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.

[0089] Among them, in the discharging 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 moves the packaging bag away.

[0090] In some specific embodiments of the present invention, the turntable device 100 may include multiple pairs of side clamps 250. A pair of side clamps 250 clamp two sides of the packaging bag. The side clamps 250 are connected with support arms 260. The support arms 260 are fixed to the turntable of the turntable device 100. A second pressure sensor is arranged between the support arms 260 and the turntable. The second pressure sensor is electrically connected with the controller; The receiving warning device 170 includes a moving seat 270 connected to the lifting frame 190 and an arc track 280 connected to the moving seat 270. The arc track 280 extends along the circumference of the turntable device 100. The arc track 280 is located between the feeding device 140 and the sealing device 150.

[0091] During use, when the value of the second pressure sensor decreases, the moving seat 270 moves along the arc track 280 to below the corresponding packaging bag, the lifting seat rises, the receiving tray 180 supports the packaging bag, the side clamps 250 release the clamping, the receiving tray 180 receives the packaging bag, and the first pressure sensor 200 checks the pressure value and updates the preset value, so as to avoid false alarms of the receiving warning device 170 when loading another packaging bag.

[0092] When the packaging bag is taken away from the receiving tray 180, the controller can automatically or manually restore the preset value to ensure the reliable receiving warning function and meet the loading requirements of the next packaging bag.

[0093] In this embodiment, there is a height difference between the part of the turntable device 100 for clamping the packaging bag and the parts of other devices acting on the packaging bag. Therefore, it can work smoothly without mutual influence.

[0094] In this embodiment, for rotational motion, it can be achieved by driving with a motor. For linear motion such as lifting, it can be achieved by the combination of a motor and a screw and nut.

[0095] In the description of this specification, the description with reference to terms such as "one embodiment, some embodiments, illustrative embodiments, examples, specific examples or some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0096] The terms "first, second, third, fourth", etc. (if any) in the specification and claims of this application and the above drawings are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments described herein can be implemented in an order other than that illustrated or described herein.

[0097] It should also be noted that in the description of this specification, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between these entities or operations.

[0098] In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that comprises a series of steps or units does not have to be limited to those steps or units clearly listed, but may also include other steps or units not clearly listed or inherent to these process, method, product or device.

[0099] Moreover, the term "comprise", "include" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device that comprises a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

[0100] The embodiments of the present invention have been described in detail above with reference to the drawings, but the present invention is not limited to the above embodiments. Various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. Automatic nut bagging equipment, characterized in that: The invention comprises a turntable device (100), a bag supply device (110) arranged along the circumference of the turntable device (100), a bag opening device (120), a loading device (140), a sealing device (150) and a conveying device (160); the bag supply device (110) is used to supply packaging bags to the turntable device (100); the turntable device (100) is used to clamp two side edges of the packaging bag and rotate the packaging bag to each device; the bag opening device (120) is used to absorb the two side edges of the packaging bag and separate the two side edges from each other to open the bag; the loading 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 automatic nut bagging device further comprises a material receiving warning device (170), the material receiving warning device (170) being located at the bottom of the loading device (140), the material receiving warning device (170) comprising a lifting frame (190), a material receiving tray (180) arranged on the lifting frame (190), and a first pressure sensor (200) arranged at the bottom of the material receiving tray (180), the first pressure sensor (200) being used to detect the pressure of the material receiving tray (180) on the lifting frame (190), and the first pressure sensor (200) being electrically connected to a controller of the automatic nut bagging device; Before the loading device (140) puts nuts into the packaging bag, the lifting frame (190) rises to the highest point and the receiving tray (180) supports the packaging bag; when the loading device (140) puts nuts into the packaging bag, the lifting frame (190) descends; when the lifting frame (190) descends to the 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, and when the final pressure value exceeds the set value, the controller issues an alarm.

2. The automatic nut bagging equipment according to claim 1 is characterized in that: The bag supply device (110) comprises a first material suction swing arm (210), a second material suction swing arm (220) and a material clamping and translating seat (230); the first material suction swing arm (210) is used to suck the packaging bag and switch the packaging bag from a flat state to an inclined state; the second material suction swing arm (220) is used to suck the packaging bag and switch the packaging bag from an inclined state to an upright state; the material clamping and translating seat (230) is used to clamp the packaging bag in an upright state and move the packaging bag to the turntable device (100).

3. The automatic nut bagging equipment according to claim 2 is characterized in that: The first material suction swing arm (210) comprises a first material suction disc and a first negative pressure pipeline connected to the first material suction disc, and the second material suction swing arm (220) comprises a second material suction disc and a second negative pressure pipeline connected to the second material suction disc, 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 material clamping translation seat (230) comprises a pair of clamping claws (240), the clamping claws (240) are used to clamp the top edge of the packaging bag, the clamping claws (240) can flip over to clamp the packaging bag and release the clamping, and the turntable device (100) comprises multiple pairs of side clamps (250), and a pair of the side clamps (250) clamps two side edges of the packaging bag.

4. The automatic nut bagging equipment according to claim 1 is characterized in that: The turntable device (100) comprises a plurality of pairs of side clamps (250), wherein a pair of the side clamps (250) clamps two side edges of the packaging bag, the side clamps (250) are connected to support arms (260), and the support arms (260) are fixed to a turntable of the turntable device (100). A second pressure sensor is provided between the support arms (260) and the turntable, and the second pressure sensor is electrically connected to the controller.

5. The automatic nut bagging equipment according to claim 4, characterized in that: The material receiving warning device (170) comprises a movable seat (270) connected to the lifting frame (190) and an arc track (280) connected to the movable seat (270); the arc track (280) extends along the circumference of the turntable device (100); and the arc track (280) is located between the loading device (140) and the sealing device (150).

6. The automatic nut bagging equipment according to claim 1, characterized in that: The turntable device (100) further comprises a bag-holding mechanism (130), the bag-holding mechanism (130) reciprocating between the bag-opening device (120) and the loading device (140), the bag-holding mechanism (130) comprising a pair of bag-holding claws (290), the pair of bag-holding claws (290) being able to extend into the packaging bag, and the pair of bag-holding claws (290) being relatively rotated to hold open the packaging bag.

7. The automatic nut bagging equipment according to claim 6, characterized in that: The bag-holding mechanism (130) comprises a bag-holding arm (300) extending radially along a rotating disk of the rotating disk device (100); the bag-holding claw (290) is arranged at one end of the bag-holding arm (300); the other end of the bag-holding arm (300) is located at the center of the rotating disk; a control shaft (310) is arranged at the center of the rotating disk; the top end of the control shaft (310) is connected and fixed to the bag-holding arm (300); the control shaft (310) can be lifted and lowered and rotated so that a pair of the bag-holding claws (290) can reciprocate between the bag opening device (120) and the loading device (140).

8. The automatic nut bagging equipment according to claim 1, characterized in that: The bag opening device (120) comprises a front bag suction plate (320) and a rear bag suction plate (330) arranged along the radial direction of the turntable device (100); the front bag suction plate (320) and the rear bag suction plate (330) can be translated closer to each other to absorb the packaging bag; and the front bag suction plate (320) and the rear bag suction plate (330) can be translated away from each other to make the two side surfaces of the packaging bag move away from each other to open the bag.

9. Automatic bagging method for nuts, characterized by: Using the automatic nut bagging equipment according to any one of claims 1 to 8, the turntable device (100) further includes a bag-holding mechanism (130), the bag-holding mechanism (130) reciprocates between the bag-opening device (120) and the loading device (140), and the bag-holding mechanism (130) includes a pair of bag-holding claws (290), the pair of bag-holding claws (290) can extend into the packaging bag, and the pair of bag-holding claws (290) rotate relative to each other to hold open the packaging bag. The automatic nut bagging method comprises: a bag supplying step, wherein the bag supplying device (110) supplies the stacked packaging bags one by one to the turntable device (100); a bag opening step, the turntable device (100) transferring the packaging bag to the bag opening device (120), the bag opening device (120) adsorbing two side surfaces of the packaging bag so that the two side surfaces of the packaging bag are separated from each other to open the bag; a bag-opening step, wherein the bag-opening claw (290) extends into the packaging bag and opens it, and the bag-opening claw (290) rotates synchronously with the turntable device (100) so that the packaging bag is located at the bottom of the loading device (140); The loading step comprises: the lifting frame (190) rises to the highest point, the receiving tray (180) supports the packaging bag, the loading device (140) descends, the loading device (140) extends into the packaging bag, the loading device (140) puts nuts into the packaging bag, the bag support claw (290) rises and rotates to the bag opening device (120), 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, the first pressure sensor (200) transmits the final pressure value to the controller, and when the final pressure value exceeds the set value, the controller issues an alarm; a sealing step, when the final pressure value does not exceed a set value, the rotating disk 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.

10. The automatic nut bagging method according to claim 9, characterized in that: The turntable device (100) comprises a plurality of pairs of side clamps (250), wherein a pair of the side clamps (250) clamps two side edges of the packaging bag, the side clamps (250) are connected to support arms (260), the support arms (260) are fixed to a turntable of the turntable device (100), a second pressure sensor is provided between the support arms (260) and the turntable, and the second pressure sensor is electrically connected to the controller; The material receiving warning device (170) comprises a movable seat (270) connected to the lifting frame (190) and an arc track (280) connected to the movable seat (270), wherein the arc track (280) extends along the circumference of the turntable device (100), and the arc track (280) is located between the loading device (140) and the sealing device (150); When the value of the second pressure sensor decreases, the movable 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 the 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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