Automatic packaging vending machine for loose rice

Abstract

The present invention relates to an automatic packaging vending machine for loose rice, comprising a rice bin, a rice discharging device fixedly arranged below the rice bin to discharge the loose rice in the rice bin and send it into a weighing funnel fixedly arranged at the bottom of the rice bin; a rice loading device arranged below the weighing funnel for loading the loose rice in the weighing funnel into a rice bag; a fixed bracket located below the rice bin; a bag storehouse arranged on the fixed bracket for placing rice bags; and a bag taking device fixedly arranged on the fixed bracket for taking the rice bags placed on the bag storehouse and sending them to the bottom of the rice loading device and opening the rice bags. The present invention can realize weighing, and after weighing is completed, the machine can automatically complete the bagging and sealing of rice without manual assistance, which provides convenience for automatic vending.

Description

Technical Field

[0001] The invention relates to the field of vending machines, and in particular to an automatic packaging vending machine for loose rice. Background Art

[0002] At present, when selling loose rice, it is usually weighed and bagged manually, because there is no suitable automation technology for the weighing and bagging process in the existing technology. In order to allow more people to buy edible rice conveniently and quickly, especially fresh rice that has just been harvested and processed, it is necessary to customize and develop a loose rice automatic packaging vending machine. Due to the characteristics of self-service purchase, 24-hour automatic operation, and low-cost large-scale placement of vending machines, people have been relieved of the restriction that they must buy rice at a specified time and at a corresponding place, which has brought great convenience to people's corresponding needs in life.

[0003] There is an automatic rice vending machine on the market, application number 201610274904.2, which has the following shortcomings: 1. It uses a rice storage barrel to store rice, the effective space utilization rate of the vending machine cabinet is low, the structure is complex, the material replenishment is cumbersome, and it is not conducive to the needs of many varieties and large storage volumes; 2. After the weighing is completed, it is necessary to manually take the bag, open the bag mouth and connect it to the rice outlet, and then press the corresponding button to start the rice bagging process, which is not convenient and intelligent for customers; 3. After the rice is loaded, the machine does not automatically seal, which is not conducive to the carrying and storage of rice. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a loose rice automatic packaging vending machine which has a simple structure and is capable of packaging and weighing loose rice.

[0005] To achieve the above object, the present invention adopts the following technical solution: a bulk rice automatic packaging vending machine, comprising:

[0006] A rice silo for storing loose rice;

[0007] A rice discharging device is fixedly arranged below the rice bin to discharge the loose rice in the rice bin and send it into a weighing funnel fixedly arranged at the lower part of the rice bin;

[0008] A rice loading device provided below the weighing funnel for loading the loose rice in the weighing funnel into a rice bag;

[0009] A fixed bracket located below the rice bin;

[0010] A bag storage provided on a fixed support for placing bags of rice;

[0011] A bag taking device is fixedly arranged on the fixed bracket and is used for taking down the rice bags placed on the bag storehouse and sending them to the bottom of the rice loading device and opening the rice bags.

[0012] The bag taking device comprises a parallel guide pair fixedly mounted on a fixed bracket, a mounting plate mounted on the parallel guide pair, a parallel slider fixedly mounted on the bottom of the mounting plate and moving in cooperation with the parallel guide pair, a switching electric cylinder mounted between the parallel guide pairs, a cylinder body of the switching electric cylinder fixedly connected to the fixed bracket, and a telescopic end of the switching electric cylinder fixedly connected to the bottom of the mounting plate;

[0013] The mounting plate is fixedly mounted with a bag taking and supporting electric cylinder, and the bag taking and supporting electric cylinder is perpendicular to each other, the telescopic end of the bag taking and supporting electric cylinder is fixedly connected with a vertical movable mounting plate perpendicular to the mounting plate, the end surface of the vertical movable mounting plate connected with the bag taking and supporting electric cylinder is fixedly connected with a transverse guide pair, and the transverse guide pair is perpendicular to the end surface of the vertical movable mounting plate, and the transverse guide pair cooperates with a transverse slider fixedly arranged on the mounting plate;

[0014] It also includes a vertical fixed mounting plate which is fixed on the fixed bracket and parallel to the vertical movable mounting plate. The surfaces corresponding to each other of the vertical movable mounting plate and the vertical fixed mounting plate are respectively used for adsorbing suction cups for rice bags.

[0015] The rice bin is provided with a plurality of independent barriers, and a rice discharging device is provided under each barrier, the rice discharging device comprises a rice discharging box body fixed at the bottom of the rice bin, a rice inlet communicating with the rice bin is provided at the upper part of one end of the rice discharging box body, a rice outlet is provided at the lower part of the other end of the rice discharging box body, a rice discharging motor is fixedly provided at one end of the rice discharging box body, an output shaft of the rice discharging motor extends into the rice discharging box body and is fixedly connected with a spiral output shaft provided in the rice discharging box body for sending the loose rice entering the rice inlet into the rice outlet.

[0016] The rice loading device comprises a rice loading bracket whose upper end is fixed to the lower end of the weighing funnel, the rice loading bracket is provided with a rice unloading plate for blocking or opening the rice unloading port at the bottom of the weighing funnel, the bottom of the rice loading bracket is provided with a rice unloading electric cylinder, the cylinder body of the rice unloading electric cylinder is fixedly connected to the bottom of the rice loading bracket, and the telescopic end of the rice unloading electric cylinder is fixedly connected to the rice unloading plate.

[0017] The bag storage comprises a bag storage mounting plate fixed on a fixing bracket and a hanging column vertically fixed on the end surface of the bag storage mounting plate for hanging rice bags. The hanging column extends toward the end of the parallel guide rail pair, and the extension line of the hanging column is perpendicular to the parallel guide rail pair.

[0018] A supporting mechanism for supporting the rice bag is provided at the bottom of the fixed bracket.

[0019] The supporting mechanism includes a supporting bracket and a tray arranged above the supporting bracket. A bag supporting electric cylinder perpendicular to the bottom surface of the supporting bracket is fixedly provided in the supporting bracket. The telescopic end of the bag supporting electric cylinder passes through a through hole arranged above the supporting bracket and is fixedly connected to the bottom of the tray, and the telescopic rod of the bag supporting electric cylinder is gap-matched with the through hole arranged above the supporting bracket.

[0020] A guide rod perpendicular to the upper surface of the supporting bracket is arranged on the upper surface of the supporting bracket, and the guide rod is passed through the tray. A vibrator is arranged at the bottom of the tray.

[0021] The bag taking device is also provided with a sealing device for sealing the rice bags, and the sealing device includes a horizontal sealing movable block arranged on the vertical movable mounting plate and a horizontal sealing static block arranged on the vertical fixed mounting plate, and the horizontal sealing movable block and the horizontal sealing static block are located below the suction cup, and the horizontal sealing movable block and the horizontal sealing static block have the same height.

[0022] The suction cup is a vacuum suction cup, and the adsorption degree of the suction cup is controlled by a vacuum pump.

[0023] The beneficial effects of the present invention are:

[0024] 1. The entire rectangular storage bin is divided by partitions to form a plurality of small storage bin assemblies with independent functions, which has a simple structure, high space utilization, a wide variety of storage materials, a large storage capacity and high structural strength.

[0025] 2. A special spiral discharging mechanism is adopted, and the gap between the spiral and the cylinder wall is large to prevent the spiral from crushing the rice grains. There is a slope between the spiral and the discharging port as a buffer zone for the rice. The rice in this buffer zone falls from the discharging port under the extrusion force of the spiral. When the spiral stops rotating, the inclined plate of the buffer zone prevents the rice from continuing to fall from the discharging port. When the spiral rotates in the opposite direction at a certain angle, there will be a certain safety storage margin in the buffer zone. Even if the entire vending machine vibrates for various reasons, no rice will leak from the discharging port.

[0026] 3. Because the bags are stored in the bag warehouse by hanging and relying on their own weight, even soft bags can be stably and reliably kept in a corresponding upright state in the bag warehouse, which has a wider range of applications and increases the success rate of bag retrieval. It eliminates the need for other bag warehouses to arrange bag retrieval suction cups in the length direction of the bag, and only needs to arrange suction cups at the bag opening.

[0027] 4. An electric push rod (electric cylinder) is used as the actuator, which has a simple structure, is easy to control (the electric push rod itself has a travel switch inside) and has a low cost. A transverse sealing device is connected to the bag taking and bag supporting suction cup fixing plate. By controlling the power on and off of the transverse sealing thermoplastic sealing device, a set of electric push rods can realize both the bag taking and bag supporting function and the bag opening sealing function.

[0028] 5. The bag-supporting vibration mechanism reduces the force of the rice bag on the suction cup by lifting the bottom of the rice bag. At the same time, during the rice filling process, the vibration device makes the rice in the bag more evenly located at the bottom of the bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the lower structure of the present invention;

[0031] Figure 3 It is a schematic diagram of the upper structure of the present invention;

[0032] Figure 4 It is a schematic diagram of the structure of the bag taking device in the present invention;

[0033] Figure 5 It is a structural schematic diagram of the connection between the bag taking device and the rice loading device in the present invention;

[0034] Figure 6 It is a schematic structural diagram of the rice loading device in the present invention;

[0035] Figure 7 It is a structural schematic diagram of the supporting mechanism in the present invention. DETAILED DESCRIPTION

[0036] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0037] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are 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 understood as a limitation on the present invention.

[0038] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0039] Example 1

[0040] like Figure 1The illustrated automatic packaging vending machine for loose rice comprises: a rice bin 1 for storing loose rice; the rice bin 1 is divided into a plurality of rice grids for placing different types of rice, and specifically, the rice bin 1 is fixed on the outer cabinet frame of the vending machine.

[0041] A rice discharging device 3 is fixedly arranged below the rice bin 1 to discharge the loose rice in the rice bin 1 and feed it into a weighing funnel 4 fixedly arranged at the lower part of the rice bin 1; the weighing funnel 4 is located directly below the rice bin 1, and the rice discharging device 3 is located at the top of the weighing funnel 4 and the rice outlet of the rice discharging device 3 is aligned with the feed inlet in the weighing funnel 4, so that the loose rice in the rice bin 1 can enter the weighing funnel 4 through the rice discharging device 3. The weighing funnel 4 is common knowledge in the technical field and belongs to common knowledge. In the specific implementation process, the weighing funnel can be manufactured according to needs and will not be described in detail here. Because in the implementation process, there are multiple blocks in the rice bin, a rice discharging device 3 is provided below each rice bin block, and all the rice discharging devices 3 are located in the upper part of the weighing funnel 4.

[0042] A rice loading device 5 is provided below the weighing funnel 4 for loading the loose rice in the weighing funnel 4 into the rice loading bag 8; after the weighing funnel 4 weighs the loose rice entering the weighing funnel 4, the rice loading device 5 loads the weighed rice into the rice loading bag 8 below;

[0043] A fixed bracket 2 below the weighing funnel 4; the fixed bracket 2 is arranged directly below the weighing funnel 4, and the fixed bracket 2 is mainly used to provide support for the bag storage and bag taking device 9 below the weighing funnel;

[0044] A bag storehouse 7 for placing rice bags 8 is provided on the fixed bracket 2; the bag storehouse 7 is used to store rice bags, and specifically all the rice bags 8 are stacked together and hung vertically in the bag storehouse 7, so that the bag taking device 9 can take the bags conveniently;

[0045] A bag taking device 9 is fixedly mounted on the fixed bracket 2 and is used to take the rice bag 8 placed on the bag bank 7 and transport it to the bottom of the rice loading device 5 and to open the rice bag 8. The bag taking device 9 is used to take the rice bag in the bag bank 7 and transport it to the bottom of the rice loading device 5 and to open the rice bag 8. The rice loading device 5 loads the weighed loose rice into the rice bag 8. When the rice loading is completed, the bag taking device 9 seals the rice bag.

[0046] Specifically, during operation, when purchasing loose rice, the loose rice in the rice bin is sent to the weighing hopper for weighing according to the rice discharging device 3. When the weighed loose rice meets the bagging weight, the bag taking device 9 takes down the rice bag 8 in the bag bin 7 and sends it under the weighing funnel, and opens the bag opening of the rice bag to ensure that the bag opening of the rice bag is located directly below the rice filling device 5. At this time, the rice filling device 5 puts the weighed loose rice in the weighing funnel 4 into the rice bag. When the rice filling is completed, that is, the loose rice in the weighing funnel is completely loaded into the rice bag, the bag taking device 9 seals the bag opening of the rice bag. After the bag is completely sealed, the rice filling is completed. This embodiment mainly protects the structural part of the automatic packaging vending machine. The price setting for the entire automatic vending machine rice filling, how to pay and the corresponding weighing do not belong to the protection scope of this application and are not described in detail herein.

[0047] Example 2

[0048] On the basis of Example 1, in order to further implement the invention in detail, as Figure 2 and Figure 4 The bag taking device 9 includes a parallel guide pair 901 fixedly arranged on the fixed bracket 2, a mounting plate 904 arranged on the parallel guide pair 901, a parallel slider 905 which moves in cooperation with the parallel guide pair 901 is fixedly arranged at the bottom of the mounting plate 904, a switching electric cylinder 902 is arranged between the parallel guide pairs 901, and the cylinder body of the switching electric cylinder 902 is fixedly connected to the fixed bracket 2, and the telescopic end of the switching electric cylinder 902 is fixedly connected to the bottom of the mounting plate 904; the mounting plate 904 can slide on the parallel guide pair 901 driven by the switching electric cylinder 902, so as to ensure that the equipment provided on the mounting plate 904 can move, and further ensure that the bag taking device 9 can move during the bag taking process, and the parallel guide pair 901 cooperates with the parallel slider 905, specifically, the parallel slider 901 is buckled on the parallel guide pair to achieve cooperation with the parallel guide pair; the parallel guide pair 901 is fixed to one side of the upper part of the fixed bracket 2 by screws;

[0049] The mounting plate 904 is fixedly provided with a bag taking and supporting electric cylinder 906, and the bag taking and supporting electric cylinder 906 is perpendicular to each other, and the telescopic end of the bag taking and supporting electric cylinder 906 is fixedly connected with a vertical movable mounting plate 909 perpendicular to the mounting plate 904, and the end surface of the vertical movable mounting plate 909 connected to the bag taking and supporting electric cylinder 906 is fixedly connected with a transverse guide pair 907, and the transverse guide pair 907 is perpendicular to the end surface of the vertical movable mounting plate 909, and the transverse guide pair 907 cooperates with a transverse slider 908 fixedly provided on the mounting plate 904; the bag taking and supporting electric cylinder 906 can drive the vertical movable mounting plate 909 to move, which is specifically achieved by the cooperation between the transverse guide pair 907 and the transverse slider 908, and the transverse guide pair 907 and the parallel guide pair 901 are perpendicular to each other on different planes, so that the transverse and longitudinal movements can be realized when in use, thereby ensuring the convenience of taking bags;

[0050] It also includes a vertical fixed mounting plate 910 fixed on the fixed bracket 2 and parallel to the vertical movable mounting plate 909, and suction cups 911 on the vertical movable mounting plate 909 and the vertical fixed mounting plate 910 respectively corresponding to each other for adsorbing the rice bag 8. The suction cup 911 provided on the vertical movable mounting plate 909 is used to adsorb the rice bag, and the suction cup 911 provided on the vertical fixed mounting plate 910 and the suction cup 911 provided on the vertical movable mounting plate 909 adsorb the two sides of the rice bag 8 to ensure that the bag mouth of the rice bag is opened, playing the role of supporting the rice bag;

[0051] Specifically, during operation, the electric cylinder 902 is switched to drive the mounting plate. Figure 2 As shown in the figure, the horizontal movement is being performed, at this time, the bag holding electric cylinder 906 is retracted, the vertical moving mounting plate 909 is pulled to the side close to the mounting plate, and then the vertical moving mounting plate 909 is driven to the front of the bag storage by switching the pushing electric cylinder 902. At this time, the suction cup 911 provided on the vertical moving mounting plate 909 will absorb the rice bag provided on the outermost side of the bag storage, and then the pushing electric cylinder 902 is switched to push the mounting plate to move to the other side opposite to the bag storage, and the absorbed rice bag is transported to the vertical fixed mounting plate 91 0, then the bag-supporting electric cylinder 906 is taken to push the vertical movable mounting plate 909 to the opposite side of the vertical fixed mounting plate 910, and contacts with the vertical fixed mounting plate 910, and the suction cup provided on the vertical fixed mounting plate 910 adsorbs the other side of the rice bag, and then the bag-supporting electric cylinder 906 is taken to pull the vertical movable mounting plate 909 to move to the other side, at this time the mouth of the rice bag is opened, and the rice loading device 5 loads the loose rice in the weighing funnel into the opened rice bag, and then the rice loading action is completed; at this time Figure 4The bag taking device 9 is also provided with a sealing device 10 for sealing the rice bags 8. The sealing device 10 includes a horizontal sealing movable block 1001 provided on the vertical movable mounting plate 909 and a horizontal sealing static block 1002 provided on the vertical fixed mounting plate 910. The horizontal sealing movable block 1001 and the horizontal sealing static block 1002 are located below the suction cup 911, and the horizontal sealing movable block 1001 and the horizontal sealing static block 1002 are at the same height. The horizontal sealing movable block 1001 and the horizontal sealing static block 1002 can seal the filled rice bags. Specifically, the horizontal sealing movable block 1001 and the horizontal sealing static block 1002 are common knowledge in the technical field. When working, the horizontal sealing movable block 1001 and the horizontal sealing static block 1002 are powered on by controlling the power switch of the horizontal sealing heating, and start heating, so that the bags on both sides are thermally fused together at the horizontal sealing extrusion to achieve the sealing effect.

[0052] like Figure 3 and Figure 6 A plurality of independent barriers are provided in the rice bin 1, and a rice discharging device 3 is provided under each barrier. The rice discharging device 3 comprises a rice discharging box body 301 fixed at the bottom of the rice bin 1, a rice inlet 302 communicating with the rice bin 1 is provided at the upper portion of one end of the rice discharging box body 301, a rice outlet 303 is provided at the lower portion of the other end of the rice discharging box body 301, a rice discharging motor 304 is fixedly provided at one end of the rice discharging box body 301, an output shaft of the rice discharging motor 304 extends into the rice discharging box body 301 and is fixedly connected to a spiral output shaft 305 provided in the rice discharging box body 301 for feeding the loose rice entering from the rice inlet 302 into the rice outlet 303. The rotating conveying shaft 305 can drive the loose rice into the rice discharging box 301 and send it to the rice discharging port through the inlet, completing the entire rice discharging process. The rice at the bottom of the rice bin is transmitted to the weighing assembly through the principle of spiral transmission. The control method adopts closed-loop control, and the number of revolutions of the stepper motor is controlled to make the rice discharged reach the weight set by the customer.

[0053] like Figure 5The rice loading device 5 includes a rice loading bracket 501 whose upper end is fixed to the lower end of the weighing funnel 4, a rice unloading plate 502 is provided on the rice loading bracket 501 for blocking or opening the rice unloading port at the bottom of the weighing funnel 4, a rice unloading electric cylinder 503 is provided at the bottom of the rice loading bracket 501, the cylinder body of the rice unloading electric cylinder 503 is fixedly connected to the bottom of the rice loading bracket 501, and the telescopic end of the rice unloading electric cylinder 503 is fixedly connected to the rice unloading plate 502, and a rice unloading electric cylinder 503 is provided at the bottom of the rice loading bracket 501, the cylinder body of the rice unloading electric cylinder 503 is fixedly connected to the bottom of the rice loading bracket 501, and the telescopic end of the rice unloading electric cylinder 503 is fixedly connected to the rice unloading plate 502. The rice loading bracket 501 is buckled under the weighing funnel 4, which can ensure that the loose rice in the weighing funnel can be counted into the rice loading bracket 501 and fall into the rice loading bag provided below through the rice loading hole below the rice loading bracket 501. Specifically, the rice loading bracket 501 is designed to be an inclined plate, which can ensure that the loose rice can fall into the rice loading bag. At the same time, the rice unloading electric cylinder 503 can drive the rice unloading plate 502 to slide, so as to ensure the sealing and opening of the rice loading hole. Specifically, when the rice in the rice bin falls into the weighing funnel for weighing, the rice unloading plate blocks the rice loading hole. When the weighing is completed, the rice discharging device 3 is closed, the rice unloading plate opens the rice loading hole, and the loose rice falls from the weighing funnel into the rice loading bag. When the rice loading is completed, the rice unloading electric cylinder drives the rice unloading plate to block the rice unloading hole again.

[0054] like Figure 2 The bag storehouse 7 includes a bag storehouse mounting plate 701 fixed on the fixed bracket 2 and a hanging column 702 vertically fixed on the end surface of the bag storehouse mounting plate 701 for hanging the rice bag 8. The hanging column 702 extends to the end of the parallel guide rail pair 901, and the extension line of the hanging column 702 is perpendicular to the parallel guide rail pair 901. When the rice bag is put into the bag storehouse, the rice bag is stacked and vertically hung on the hanging column 702. At the same time, in order to ensure the integrity of the rice bag, baffles are provided on both sides of the rice bag to limit the position of the rice bag. The hanging column 702 is used to hang the rice bag, so that the rice bag can be easily removed when the suction cup is adsorbed. The specific bag storehouse is arranged on the fixed bracket on the other side opposite to the parallel guide rail pair 901. At the same time, the bag storehouse and the vertical fixed mounting plate are located on the same side, which is convenient for taking the bag.

[0055] The bag warehouse was designed to solve the current two main ways of bag removal: horizontal bag removal and vertical bag removal. The horizontal bag removal method uses the bottom of the bag to support its own weight and uses the compression force to keep the bag in an upright state. If the bag is too soft or too long, it becomes difficult to keep the bag in an upright state. The vertical bag removal method also targets the defect that the bag cannot be too soft.

[0056] Therefore, a bag storage structure was designed that uses a bag suspension method, relies on gravity and combines compression force to keep the bags in a vertical state. The bags rely on gravity to maintain an upright state, which is safer and more reliable, and improves the success rate of bag retrieval.

[0057] At present, in order to complete the bag taking smoothly, in addition to arranging two bag taking suction cups at one end of the bag, at least one bag taking suction cup must be arranged in the length direction of the bag. Our bag warehouse only needs two bag taking suction cups to complete the bag taking smoothly, and the bag taking force is small.

[0058] Example 3

[0059] On the basis of Example 2, in order to be able to support the rice bag when filling the rice, as shown in FIG. Figure 7 A supporting mechanism 6 for supporting a rice bag 8 is provided at the bottom of the fixed bracket 2 .

[0060] The supporting mechanism 6 includes a supporting bracket 602, a tray 601 arranged above the supporting bracket 602, a bag-holding electric cylinder 603 perpendicular to the bottom surface of the supporting bracket 602 fixedly arranged in the supporting bracket 602, the telescopic end of the bag-holding electric cylinder 603 passes through the through hole arranged above the supporting bracket 602 and is fixedly connected to the bottom of the tray 601, and the telescopic rod of the bag-holding electric cylinder 603 is in gap with the through hole arranged above the supporting bracket 602. The tray 601 is driven by the bag-holding electric cylinder 603 to lift the rice bag filled with loose rice, and after the rice is loaded, the bag-holding electric cylinder drives the tray 601 to be lowered, so as to facilitate the removal of the rice bag;

[0061] A guide rod 604 is provided on the upper surface of the support bracket 602 and is perpendicular to the upper surface of the support bracket 602. The guide rod 604 is passed through the tray 601. A vibrator 605 is provided at the bottom of the tray 601. The guide rod 604 can place the tray to tilt left and right, and the vibrator 605 can ensure that the rice bag is vibrated when the rice is loaded, so as to ensure that the loose rice loaded into the rice bag can be filled.

[0062] Meanwhile, the suction cups in the above embodiments all adopt vacuum suction cups. Specifically, the suction cups are driven by a vacuum pump for adsorption, which is common knowledge in the technical field and will not be described in detail here.

[0063] Specifically, during operation, after the customer selects the corresponding type of rice, inputs the weight of the rice to be purchased and pays, the rice discharging motor located at the bottom of the rice bin storing the corresponding rice starts to start, and rotates at the corresponding number of revolutions according to the speed 1 (faster speed) set by the program (the program sets the corresponding number of revolutions according to the weight of the rice to be discharged), and then rotates at the speed 2 (very slow speed) set by the program, while weighing the rice in the weighing funnel. When the difference between the weighed weight and the weight purchased by the customer is within the allowable error range, the rice discharging motor stops rotating, and the rice discharging and weighing work is completed;

[0064] The bag taking and supporting cylinder begins to extend, and pushes the bag taking suction cup to the side of the bag located on the outermost side in the bag warehouse. The vacuum pump starts to start, so that the bag taking suction cup tightly sticks to the side of the bag. The bag taking and supporting cylinder begins to contract, and the bag is smoothly taken out of the bag warehouse.

[0065] The switch push electric cylinder starts to extend, and the bag to be taken is pushed to the lower part of the weighing funnel. The bag-taking electric cylinder extends, so that the bag is closely attached to the bag-holding suction cup on the opposite side of the bag-taking suction cup. The electromagnetic valve of the bag-holding suction cup is controlled to open, so that the bag-holding suction cup tightly holds the bag. At this time, the bag-holding suction cup and the bag-taking suction cup tightly hold the two sides of the bag respectively, and the bag-taking electric cylinder starts to shrink, and the mouth of the bag is simultaneously opened by the suction cup;

[0066] The electric cylinder at the bottom of the opened bag extends, and the bag supporting plate lifts the bottom of the bag; the discharge electric cylinder at the bottom of the weighing funnel contracts, opens the discharge plate, and the rice falls into the bag from the discharge port. The vibrator at the bottom of the bag supporting plate starts to vibrate, and the bag supporting plate vibrates while the rice is put into the bag, so as to prevent the rice in the bag from being biased to one place in the bag;

[0067] After the rice is unloaded, the vibrator stops vibrating, the unloading electric push rod extends, and the unloading plate is closed; the bag taking and supporting electric cylinder extends to make the two sides of the bag close together (a special suction cup is used to ensure that the two sides of the bag are smoothly and tightly attached to each other), and at the same time, the horizontal seal moving block and the horizontal seal static block located at the bottom of the suction cup are also tightly squeezed together, and the power switch for controlling the horizontal seal heating is turned on to start heating, so that the bags on both sides are thermally fused together at the horizontal seal extrusion point; the vacuum pump stops working, the bag supporting suction cup and the bag taking and bag supporting suction cup release the bag, the bag taking and supporting electric cylinder retracts, the bag holding electric push rod retracts, and the station switching electric push rod retracts to make the bag taking and bag supporting suction cup return to the initial position; the object picking door opens, and the customer takes the packaged rice away, completing the entire rice loading process.

[0068] A special spiral discharging mechanism is adopted, and the gap between the spiral and the cylinder wall is large to prevent the spiral from crushing the rice grains. There is a slope between the spiral and the discharging port as a buffer zone for the rice. The rice in this buffer zone falls from the discharging port under the extrusion force of the spiral. When the spiral stops rotating, the inclined plate of the buffer zone prevents the rice from continuing to fall from the discharging port. When the spiral rotates in the opposite direction at a certain angle, there will be a certain safety storage margin in the buffer zone. Even if the entire vending machine vibrates to a certain extent due to various reasons, no rice will leak from the discharging port.

[0069] Because the bags are stored in the bag warehouse by hanging and relying on their own weight, even very soft bags can stably and reliably maintain a corresponding upright state in the bag warehouse, which has a wider range of applications for bags and increases the success rate of bag retrieval. It eliminates the need for other bag warehouses to arrange bag retrieval suction cups in the length direction of the bag, and only needs to arrange suction cups at the bag opening. The electric push rod is used as the actuator, which has a simple structure, convenient control (the electric push rod itself has a travel switch inside) and low cost.

[0070] A transverse sealing device is connected to the bag taking and bag holding suction cup fixing plate. By controlling the on and off of the transverse sealing thermoplastic sealing device, a set of electric push rods can realize both the bag taking and bag holding function and the bag opening sealing function.

[0071] The bag supporting vibration mechanism reduces the force of the rice bag on the suction cup by supporting the bottom of the rice bag. At the same time, during the rice filling process, the rice in the bag is more evenly distributed at the bottom of the bag through the action of the vibration device.

[0072] The above embodiments are merely examples of the present invention and do not limit the protection scope of the present invention. All designs that are the same or similar to the present invention fall within the protection scope of the present invention.

Claims

1. A bulk rice automatic packaging vending machine, characterized in that: include: A rice silo for storing loose rice (1); A rice discharging device (3) fixedly arranged below the rice bin (1) for discharging the loose rice in the rice bin (1) and feeding it into a weighing funnel (4) fixedly arranged at the bottom of the rice bin (1); A rice loading device (5) provided below the weighing hopper (4) and used for loading the loose rice in the weighing hopper (4) into a rice loading bag (8); A fixed support (2) located below the rice bin (1); A bag storage (7) provided on the fixed support (2) and used for placing rice bags (8); A bag taking device (9) fixedly mounted on the fixed bracket (2) and used for taking down the rice bag (8) placed on the bag storage (7) and sending it to the bottom of the rice loading device (5) and opening the rice bag (8); The bag taking device (9) comprises a parallel guide rail pair (901) fixedly mounted on a fixed bracket (2), a mounting plate (904) mounted on the parallel guide rail pair (901), a parallel slider (905) fixedly mounted on the bottom of the mounting plate (904) and moving in coordination with the parallel guide rail pair (901), and a switching electric cylinder (902) mounted between the parallel guide rail pairs (901), a cylinder body of the switching electric cylinder (902) being fixedly connected to the fixed bracket (2), and a telescopic end of the switching electric cylinder (902) being fixedly connected to the bottom of the mounting plate (904); A bag taking and supporting electric cylinder (906) is fixedly mounted on the mounting plate (904), and the bag taking and supporting electric cylinder (906) and the switching and pushing electric cylinder (902) are perpendicular to each other; the telescopic end of the bag taking and supporting electric cylinder (906) is fixedly connected to a vertical movable mounting plate (909) perpendicular to the mounting plate (904); the end surface of the vertical movable mounting plate (909) connected to the bag taking and supporting electric cylinder (906) is fixedly connected to a transverse guide pair (907), and the transverse guide pair (907) is perpendicular to the end surface of the vertical movable mounting plate (909); the transverse guide pair (907) cooperates with a transverse slider (908) fixedly arranged on the mounting plate (904); It also includes a vertical fixed mounting plate (910) fixed on the fixed bracket (2) and parallel to the vertical movable mounting plate (909), and suction cups (911) for adsorbing the rice bag (8) are respectively provided on mutually corresponding surfaces of the vertical movable mounting plate (909) and the vertical fixed mounting plate (910); The bag storage (7) comprises a bag storage mounting plate (701) fixed on a fixing bracket (2) and a hanging column (702) vertically fixed on the end surface of the bag storage mounting plate (701) for hanging a rice bag (8), wherein the hanging column (702) extends toward the end of the parallel guide rail pair (901), and the extension line of the hanging column (702) is perpendicular to the parallel guide rail pair (901).

2. The automatic packaging vending machine for loose rice according to claim 1, characterized in that: The rice bin (1) is provided with a plurality of independent barriers, and a rice discharging device (3) is provided below each barrier. The rice discharging device (3) comprises a rice discharging box (301) fixed at the bottom of the rice bin (1); a rice inlet (302) communicating with the rice bin (1) is provided at the upper portion of one end of the rice discharging box (301); a rice discharging outlet (303) is provided at the lower portion of the other end of the rice discharging box (301); a rice discharging motor (304) is fixedly provided at one end of the rice discharging box (301); an output shaft of the rice discharging motor (304) is fixedly connected to a spiral output shaft (305) provided in the rice discharging box (301) for delivering loose rice entering from the rice inlet (302) to the rice discharging outlet (303).

3. The automatic packaging vending machine for loose rice according to claim 1, characterized in that: The rice loading device (5) comprises a rice loading bracket (501) whose upper end is fixed to the lower end of the weighing funnel (4); a rice unloading plate (502) for blocking or opening a rice unloading opening at the bottom of the weighing funnel (4) is provided on the rice loading bracket (501); a rice unloading electric cylinder (503) is provided at the bottom of the rice loading bracket (501); a cylinder body of the rice unloading electric cylinder (503) is fixedly connected to the bottom of the rice loading bracket (501); and a telescopic end of the rice unloading electric cylinder (503) is fixedly connected to the rice unloading plate (502).

4. The automatic packaging vending machine for loose rice according to claim 1, characterized in that: A supporting mechanism (6) for supporting the rice bag (8) is provided at the bottom of the fixed bracket (2).

5. The automatic packaging vending machine for loose rice according to claim 4, characterized in that: The supporting mechanism (6) comprises a supporting bracket (602), a tray (601) arranged above the supporting bracket (602), a bag holding electric cylinder (603) perpendicular to the bottom surface of the supporting bracket (602) fixedly arranged inside the supporting bracket (602), the telescopic end of the bag holding electric cylinder (603) passing through a through hole arranged above the supporting bracket (602) and fixedly connected to the bottom of the tray (601), and the telescopic rod of the bag holding electric cylinder (603) is gap-matched with the through hole arranged above the supporting bracket (602).

6. The automatic packaging vending machine for loose rice according to claim 5, characterized in that: A guide rod (604) perpendicular to the upper surface of the supporting bracket (602) is provided on the upper surface of the supporting bracket (602), and the guide rod (604) is passed through the tray (601). A vibrator (605) is provided at the bottom of the tray (601).

7. The automatic packaging vending machine for loose rice according to claim 1, characterized in that: The bag taking device (9) is also provided with a sealing device (10) for sealing the rice bag (8). The sealing device (10) comprises a horizontal sealing movable block (1001) provided on the vertical movable mounting plate (909) and a horizontal sealing static block (1002) provided on the vertical fixed mounting plate (910). The horizontal sealing movable block (1001) and the horizontal sealing static block (1002) are located below the suction cup (911), and the horizontal sealing movable block (1001) and the horizontal sealing static block (1002) are at the same height.

8. The automatic packaging vending machine for loose rice according to claim 7, characterized in that: The suction cup (911) is a vacuum suction cup, and the degree of adsorption of the suction cup (911) is controlled by a vacuum pump.

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