Multi-grain packaging equipment

Abstract

The utility model discloses multi-grain packaging equipment which comprises a feeding device and a packaging device, the feeding device comprises a chain conveying mechanism and a plurality of vibration discs, the chain conveying mechanism is provided with a plurality of material containing boxes, outlets in the upper ends of the vibration discs are connected with a discharging track, a first stop assembly and a second stop assembly are arranged above the discharging track, and the first stop assembly and the second stop assembly are connected with the packaging device. The first stop assembly comprises a downward pressing air cylinder and a downward pressing rod. The second stopping assembly comprises a stopping air cylinder and a stopping rod, and when the stopping rod extends out to stop the product at the foremost position, the downward pressing rod is driven to press the next product. Different types of products are placed in different vibration discs respectively, the first stop assembly and the second stop assembly which are matched with each other are arranged above the discharging track of each vibration disc, it is guaranteed that only one product is output by each vibration disc each time, and a material containing box is driven to sequentially pass through each vibration disc to sequentially receive all needed products; therefore, each kind of products cannot be missed.

Description

Technical Field

[0001] This utility model relates to the field of automated packaging, specifically to a multi-particle packaging device. Background Technology

[0002] Granular products are typically packaged in small bags, with 4-6 products grouped together. Taking 4-product bags as an example, each bag contains one red, one blue, one yellow, and one white product. Current technology generally involves manual picking followed by bagging. However, this method suffers from low automation and efficiency. The applicant proposes a solution where different colored products are placed in separate vibrating trays. A conveyor belt carries a collection box sequentially through each vibrating tray. Each time the box passes a tray, it receives one product, thus collecting one red, one blue, one yellow, and one white product in sequence. However, the vibrating trays cannot guarantee that only one product is released each time. Utility Model Content

[0003] This invention provides a multi-piece packaging device that ensures that each vibratory plate outputs only one product when the container passes through it.

[0004] The objective of this utility model can be achieved through the following technical solutions:

[0005] A multi-piece packaging device includes a feeding device and a packaging device for packaging arriving products, arranged sequentially. The feeding device includes a chain conveyor mechanism and multiple vibrating discs located on both sides of the chain conveyor mechanism. Multiple material containers for receiving products output from the vibrating discs are spaced apart on the closed chain of the chain conveyor mechanism. Each vibrating disc has an outlet rail connected to its upper end, with the outlet rail facing the chain conveyor mechanism. Above the outlet rails are mutually cooperating first and second stop assemblies. The first stop assembly includes a pressing cylinder located above the outlet rails and a pressing rod driven by the pressing cylinder to descend. The second stop assembly includes a stop cylinder located at the outlet of the outlet rails and a stop rod driven by the stop cylinder to extend and retract. When the stop rod extends to stop the product at the foremost position, the pressing rod is driven to press down the next product.

[0006] Using the above technical solution, different types of products are placed in different vibratory feeders. The products in each vibratory feeder are sequentially conveyed to the outlet of the discharge track. A stop cylinder drives a stop rod to extend and intercept the foremost product, designated as product A. A pressure cylinder drives a pressure rod to descend, pressing down on the next product B immediately following product A, ensuring that product B does not fall prematurely due to vibration. When separation is needed, the stop cylinder drives the stop rod to retract, allowing product A to fall freely into the receiving box. Subsequently, the stop cylinder drives the stop rod to extend, blocking the outlet of the discharge track, while the pressure cylinder drives the pressure rod to rise, releasing the pressed product B. Product B continues to move forward under the continuous vibration of the vibratory feeder, only to be intercepted by the stop rod. The pressure cylinder then drives the pressure rod to descend, pressing down on the next product C immediately following product B. This process is then repeated continuously. In this way, through the cooperation of the first and second stop components, it is ensured that the vibratory feeder outputs only one product at a time. The chain rotation drives the material container to move, allowing it to pass through each vibrating plate in sequence to receive and collect all the required products, thus ensuring that no product is missed.

[0007] In a specific embodiment of this utility model, a controller is also included, and a counter is provided above the discharge track. The stop cylinder, the pressing cylinder, and the counter are all electrically connected to the controller.

[0008] In a specific embodiment of this utility model: a guide component is provided below the outlet of the discharge track of the vibratory feeder to guide the product smoothly into the material container.

[0009] In a specific embodiment of this utility model: the guide component includes a support plate and a tube. The support plate is placed above the stopping position on the chain conveyor mechanism. The support plate has an inclined insertion port. One end of the tube is inserted into the insertion port of the support plate, and the other end is connected to the outlet of the discharge track through a connector.

[0010] In a specific embodiment of this utility model: the packaging device includes a packaging frame, a film feeding mechanism located on the upper part of the packaging frame for feeding the film, and a heat sealing mechanism located below the film feeding mechanism for packaging the arriving products.

[0011] In a specific embodiment of this utility model: the film unwinding mechanism includes an unwinding shaft rotatably connected to the packaging machine frame for mounting a roll of film, multiple guide rollers, and a guide member located below the multiple guide rollers. The end of the film passes through all the guide rollers in sequence, passes through the outer surface of the guide member, and then enters the heat sealing mechanism.

[0012] In a specific embodiment of this utility model: the guide member has a semi-conical structure with an inner diameter that gradually decreases from top to bottom. The guide member is divided into a stop portion, a guide portion, and an insertion portion, wherein the insertion portion is inserted between the two first rotating shafts and located in front of the heat-sealing gear. With this structure, the film wraps around the guide member to form a semi-conical structure, facilitating heat sealing of the film. The insertion portion of the guide member can open up the two adjacent sides of the film, allowing the product to enter the film more smoothly and facilitating subsequent heat sealing.

[0013] In a specific embodiment of this utility model: a film sensor for detecting the film is also provided on the packaging machine frame next to the film feeding mechanism.

[0014] In a specific embodiment of this utility model: the heat sealing mechanism includes a vertical heat sealing component for vertically heat sealing the arriving film, and a horizontal heat sealing component located below the vertical heat sealing component for horizontally heat sealing and cutting the arriving film.

[0015] In a specific embodiment of this utility model: the vertical heat sealing assembly includes a first power part and two spaced-apart first rotating shafts driven to rotate by the first power part. Two meshing heat sealing gears are provided on the two first rotating shafts. A first electric heating tube is installed inside each of the two first rotating shafts. The circumferential surface of the heat sealing gears is knurled. The horizontal heat sealing assembly includes a second power part and two spaced-apart second rotating shafts driven to rotate by the second power part. Two cooperating cutters are provided on the two second rotating shafts. A second electric heating tube is installed inside each of the two second rotating shafts. A temperature controller electrically connected to all the electric heating tubes is provided on the packaging frame.

[0016] In a specific embodiment of this utility model, a rectangular frame is fixed to the lower part of the packaging machine frame. Two horizontal sliding grooves are provided at intervals on the front and rear side plates of the frame. The two ends of the two first rotating shafts are respectively installed in the two upper sliding grooves by sliders, and the two ends of the two second rotating shafts are respectively installed in the two lower sliding grooves by sliders.

[0017] In a specific embodiment of this utility model: the frame is provided with a first pressure adjustment to adjust the pressure between the two heat-sealing gears and a second pressure adjustment to adjust the pressure between the two cutters. Both the first and second pressure adjustments include two adjusting bolts and two locking nuts. The right side of the two side plates is provided with through holes communicating with the corresponding slide grooves. The right slider has mounting holes at the positions corresponding to the through holes. Both the through holes and the mounting holes are threaded holes. The end of the adjusting bolt passes through the corresponding locking nut and the through hole and is tightened in the mounting hole.

[0018] In summary, this invention ensures that different types of products are placed in different vibratory feeders, and that a first and second stop assembly are installed above the discharge track of each vibratory feeder to ensure that only one product is output from each feeder at a time. The drive cassette sequentially passes through each vibratory feeder to receive all the required products, thus ensuring that no product is missed. When packaging the arriving products is required, two rotating heat-sealing gears heat-seal the vertical portion of the film and convey the film downwards to the horizontal heat-sealing assembly. The horizontal heat-sealing assembly then uses two rotating cutters to perform horizontal heat sealing and cutting of the film. The structure is simple and easy to use. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a structural schematic diagram of a multi-particle packaging device according to the present invention;

[0021] Figure 2 This is a schematic diagram of the feeding device of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the guide component of this utility model;

[0023] Figure 4 This shows that the stop bar extends to block the foremost product A;

[0024] Figure 5 This shows the stop lever retracting, and product A falling freely;

[0025] Figure 6 This shows that the stop bar continues to extend and block the outlet of the discharge track;

[0026] Figure 7 This shows the pressure rod rising to release product B;

[0027] Figure 8 This shows the pressure bar descending to press down on product C;

[0028] Figure 9 This is a schematic diagram of the packaging device of this utility model;

[0029] Figure 10 This is a schematic diagram of the film-dispensing mechanism of this utility model;

[0030] Figure 11 This is a schematic diagram of the heat sealing mechanism of this utility model;

[0031] Figure 12 This is a schematic diagram of the structure of the transverse heat-sealing component of this utility model;

[0032] Figure 13This shows the thin film encasing the guide;

[0033] Figure 14 yes Figure 13 Sectional view at point DD. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0035] Please see Figure 1 As shown, this utility model is a multi-particle packaging device, which includes a feeding device 10 and a packaging device 30 arranged in sequence.

[0036] Combination Figure 2 As shown, the feeding device 10 includes a chain conveyor mechanism 11 and multiple vibratory feeders 20 located on both sides of the chain conveyor mechanism 11. Multiple material collection boxes 12 are spaced apart on the chain of the chain conveyor mechanism 11. The material collection boxes 12 are used to receive the products output from the vibratory feeders 20.

[0037] Combination Figure 3 As shown, each vibratory feeder 20 includes a vibratory base 21 and a vibratory feeder body 22 mounted on the vibratory base 21. The inner wall of the vibratory feeder body 22 has a spirally rising inner track, and a discharge track 23 is connected to the upper outlet of the inner track. A first stop assembly 24 and a second stop assembly 25 are provided on the discharge track, cooperating with each other. In this embodiment, the first stop assembly 24 includes a pressing cylinder 241 located above the discharge track 23 and a pressing rod 242 driven downward by the pressing cylinder 241. The second stop assembly 25 includes a stop cylinder 251 located at the outlet of the discharge track 23 and a stop rod 252 driven to extend and retract by the stop cylinder 251. Thus, when the stop cylinder 251 drives the stop rod 252 to extend, the stop rod 252 can block the product reaching the discharge track. When the pressing cylinder 241 drives the pressing rod 242 to descend, it can press down the product below the pressing rod 242. When the stop bar is driven to extend and block the product at the foremost position of the discharge track outlet, the pressing cylinder 241 drives the pressing rod to press down the next product.

[0038] This also includes a controller (not shown in the figure). A counter 13 is also installed above the discharge track. The stop cylinder 251, the pressing cylinder 241, and the counter 13 are all electrically connected to the controller.

[0039] It also includes two cabinets 14 spaced apart. There are eight vibratory feeders, with four vibratory feeders 20 mounted on the top surface of each of the two cabinets 14. A first stop assembly 24, a second stop assembly 25, and a counter 13 are mounted on the cabinets via brackets 27. A chain conveyor mechanism 11 is installed between the two cabinets 14. In this embodiment, the chain conveyor mechanism is a motor-driven motor sprocket, which drives a closed chain to rotate, thus moving the material container. The chain-driven material container has a stopping position when it moves under each vibratory feeder. The chain rotates intermittently driven by the motor, causing the material container to stop at each stopping position to ensure that the material container can receive the product output from the vibratory feeder. Here, the extension and retraction time of the stop cylinder-driven stop rod is matched to the chain running speed. The chain conveyor mechanism is prior art and will not be described in detail here.

[0040] like Figure 3 As shown, a guide assembly 15 is provided below the outlet of the vibratory feeder's discharge track to guide the product smoothly into the collection box. In this embodiment, the guide assembly 15 includes a support plate 151 and a tube 152. The support plate 151 is placed above the corresponding stopping position and has an inclined insertion port 154. One end of the tube 152 is inserted into the insertion port 154 of the support plate 151, and the other end is connected to the outlet of the discharge track 23 via a connector 153. In use, each support plate 151 is placed on the two fixed plates 11 of the chain conveyor mechanism above the corresponding stopping position. One end of the tube 152 is connected to the outlet end of the vibratory feeder 20's discharge track 23 via a connector 153, and the other end is inserted into the insertion port 154 of the support plate 151. In this way, the product falls from the outlet of the discharge track, passes through the tube, and falls into the arriving collection box 12.

[0041] Combination Figure 9 As shown, the packaging device 30 is used to package the arriving products. It includes a packaging frame 31, a film feeding mechanism 32 located on the upper part of the packaging frame 31 for feeding the film 9, and a heat sealing mechanism 40 located below the film feeding mechanism 32 for packaging the arriving products.

[0042] like Figure 9 and Figure 10 As shown, the film unwinding mechanism 32 includes an unwinding shaft 33 rotatably connected to the packaging frame 31 for mounting a roll of film 9, multiple guide rollers 34, and a guide member 35 located below the multiple guide rollers 34. Two clamping members 37 for clamping and fixing the roll of film 9 are detachably connected to the unwinding shaft 33. Thus, the roll of film 9 is inserted into the unwinding shaft 33, and then the two clamping members 37 are adjusted to clamp and fix the roll of film. During operation, the ends of the roll of film first pass around the multiple guide rollers 34, through the outer surface of the guide member 35, and into the heat sealing mechanism 40.

[0043] like Figure 9 , Figure 13 and Figure 14 As shown, in this embodiment, the guide 35 has a semi-conical structure with its inner diameter gradually decreasing from top to bottom. The film wraps around the guide to form a semi-conical structure, facilitating subsequent heat sealing by the heat sealing mechanism. The guide 35 consists of a stop portion 351, a guide portion 352, and an insertion portion 353. The insertion portion 353 extends downward and inserts between the two first rotating shafts of the heat sealing mechanism 40, located in front of the heat sealing gear 412. The insertion portion 353 can open the two inwardly approaching sides of the film, allowing the product to enter the film more smoothly.

[0044] like Figure 10 As shown, a film sensor 36 for detecting the film is also provided on the packaging frame 31 next to the film feeding mechanism. The film sensor 36 is fixed to the packaging frame 31 by a sensor bracket 361. Thus, when the entire roll of film is used up, the film sensor 36 will not detect the film and will issue an alarm, indicating that a new roll of film needs to be replaced. In this embodiment, the film sensor can be a photoelectric sensor.

[0045] like Figure 11 As shown, the heat sealing mechanism 40 includes a vertical heat sealing assembly 41 for vertically heat sealing the arriving film, and a horizontal heat sealing assembly 42 for horizontally heat sealing and cutting the arriving film. The vertical heat sealing assembly 41 is located above the horizontal heat sealing assembly 42.

[0046] Combination Figure 11 and Figure 12As shown, in this embodiment, the vertical heat-sealing assembly 41 includes a pair of spaced-apart first rotating shafts 411, with two meshing heat-sealing gears 412 mounted on one end of each shaft. The circumferential surfaces of the two heat-sealing gears are knurled. A first heating element 43 is installed inside each first rotating shaft 411. A first power unit is also connected to one side of each first rotating shaft 411. When heat-sealing the film vertically, the vertical portion of the film is first fed between the two heat-sealing gears, and the first power unit drives the two heat-sealing gears to rotate, thereby heat-sealing the film. Simultaneously, the rotation of the two heat-sealing gears can transport the film downwards to the horizontal heat-sealing assembly 42. The horizontal heat-sealing assembly 42 includes a pair of spaced-apart second rotating shafts 421, with two cooperating cutters 422 mounted on each second rotating shaft 421. A second heating element 44 is installed inside each second rotating shaft 421. A second power unit is also connected to one side of each second rotating shaft 421. The second power unit drives two second rotating shafts 421 to rotate, which in turn drives two cutters to rotate. When the film is fed between these cutters, the two cutters rotate and come into contact with each other, performing a transverse heat-sealing and cutting of the film. At the same time, the ends of the remaining cut film are pre-heat-sealed together laterally, preparing it for the next product packaging. A temperature controller (not shown in the figure) electrically connected to all the heating elements is provided on the packaging frame 31.

[0047] Both the first and second power components described above use electric motors to drive the rotating shaft. Electric motor drive is existing technology and will not be elaborated upon here.

[0048] like Figure 11 As shown, a rectangular frame 50 is fixed at the lower part of the packaging machine frame 31. The front and rear side plates 51 of this frame 50 are each provided with two horizontal sliding grooves 52 spaced apart vertically. The two ends of the two first rotating shafts 411 are respectively mounted in the two upper sliding grooves 52 via sliders 53. The two ends of the two second rotating shafts 421 are respectively mounted in the two lower sliding grooves 52 via sliders 53.

[0049] The side plate 51 is provided with a first pressure regulator 55 for adjusting the pressure between the two heat-sealing gears 412 and a second pressure regulator 56 for adjusting the pressure between the two cutters 422. In this embodiment, both the first pressure regulator 55 and the second pressure regulator 56 include two adjusting bolts 57 and two locking nuts 58. A through hole 571 communicating with the corresponding slide groove 52 is provided on the right side surface of both the front and rear side plates 51. A mounting hole 572 is provided on the right slider 53 at the position corresponding to the through hole 571. Both the through hole 571 and the mounting hole 572 are threaded holes. The end of the adjusting bolt 57 passes through the corresponding locking nut 58 and the through hole 571 and is tightened into the mounting hole 572. When pressure adjustment is required, first loosen the adjusting bolt 57 to separate the adjusting bolt 57 from the corresponding right slider 53. Then, move the right slider 53 left and right to adjust its position. After adjusting the position, tighten the adjusting bolt 57 and the locking nut 58 respectively.

[0050] To clearly illustrate this utility model, we will use a four-pack containing four different colors of products as an example. Figure 2 As shown, there are eight vibratory feeders, labeled 20a to 20h. Vibratory feeder 20a holds yellow products, vibratory feeder 20b holds white products, vibratory feeder 20c holds red products, and vibratory feeder 20d holds blue products. Before the material distribution begins, the products in these four vibratory feeders (20a, 20b, 20c, and 20d) move one by one along the inner track towards the outlet track by the vibration of the vibrating base. Figure 4 As shown, taking the vibratory plate 20a as an example, the yellow products will move one by one along the inner track towards the outlet of the discharge track under the vibration of the vibratory plate. The stop cylinder 251 drives the stop rod 252 to extend and intercept the yellow product at the front. This yellow product is the current product A. The pressing cylinder 241 will drive the pressing rod 242 to descend and press down the next product B that follows the current product A, so as to ensure that product B will not fall prematurely due to vibration.

[0051] Combination Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, when material needs to be separated, the stop cylinder 251 drives the stop rod 252 to retract, allowing the current product A to fall freely and enter the receiving box 12 via the guide assembly. Subsequently, the stop cylinder 251 drives the stop rod 252 to extend, blocking the outlet of the discharge track, while the pressing cylinder 241 drives the pressing rod 242 to rise, releasing the pressed product B. Product B continues to move forward under the continuous vibration of the vibrating chassis until it is intercepted by the stop rod 252. The pressing cylinder 241 then drives the pressing rod 242 to descend, pressing down the next product C following product B. This process is then repeated continuously. Thus, through the cooperation of the first and second stop components, the vibrating plate 20a outputs only one yellow product at a time. After the material container receives a yellow product via vibratory feeder 20a, the chain drives it forward to receive a white product via vibratory feeder 20b, a red product via vibratory feeder 20c, and a blue product via vibratory feeder 20d. Finally, the material container collects all the products for one package. Then, the chain rotates, driving the material container to move forward to the packaging device 30.

[0052] Before product packaging, the unwinding shaft of the packaging device unwinds naturally, allowing the end of the film 9 to pass sequentially around multiple guide rollers, then over the outer surface of the guide, and into the space between the two heat-sealing gears of the heat-sealing mechanism. When packaging of the arriving product is required, the heat-sealing mechanism is activated, and the film wraps around the guide to form a semi-cone shape. The discharge port 101 of the feeding device 10 is located above the guide portion of the guide. Thus, the chain of the feeding device 10 drives the holding box 12 to move to the discharge port, allowing the product in the holding box 12 to fall freely, passing under the guide of the guide and into the film. Then, the vertical portion of the film is heat-sealed by the rotation of the two heat-sealing gears and conveyed to the horizontal heat-sealing assembly. The horizontal heat-sealing assembly then uses two rotating cutters to horizontally heat-seal and cut the film, completing the packaging of the current product and conveying it away. Simultaneously, the remaining portion of the cut film has its ends pre-heat-sealed horizontally, preparing it for the next product to be packaged.

[0053] In summary, this invention ensures that different types of products are placed in different vibratory feeders, and that a first and second stop assembly are installed above the discharge track of each vibratory feeder to ensure that only one product is output from each feeder at a time. The drive cassette sequentially passes through each vibratory feeder to receive all the required products, thus ensuring that no product is missed. When packaging the arriving products is required, two rotating heat-sealing gears heat-seal the vertical portion of the film and convey the film downwards to the horizontal heat-sealing assembly. The horizontal heat-sealing assembly then uses two rotating cutters to perform horizontal heat sealing and cutting of the film. The structure is simple and easy to use.

[0054] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A multi-particle packaging device, comprising a feeding device and a packaging device for packaging arriving products arranged sequentially, wherein the feeding device includes a chain conveyor mechanism and a plurality of vibrating discs located on both sides of the chain conveyor mechanism, a plurality of material collection boxes for receiving products output from the vibrating discs are spaced apart on the closed chain of the chain conveyor mechanism, and each vibrating disc has an outlet track connected to its upper outlet facing the chain conveyor mechanism, characterized in that, Above the discharge track, there are a first stop assembly and a second stop assembly that cooperate with each other. The first stop assembly includes a pressing cylinder located above the discharge track and a pressing rod driven by the pressing cylinder to descend. The second stop assembly includes a stop cylinder located at the outlet of the discharge track and a stop rod driven by the stop cylinder to extend and retract. When the stop rod extends to stop the product at the foremost position, the pressing rod is driven to press down the next product.

2. The multi-grain packaging equipment according to claim 1, characterized in that, It also includes a controller, and a counter is installed above the discharge track. The stop cylinder, the pressing cylinder and the counter are all electrically connected to the controller.

3. The multi-grain packaging equipment according to claim 1, characterized in that, Below the outlet of the vibratory feeder's discharge track is a guide assembly for guiding the product smoothly into the holding box. The guide assembly includes a support plate and a tube. The support plate is placed above the stopping position on the chain conveyor mechanism. The support plate has an inclined socket. One end of the tube is inserted into the socket of the support plate, and the other end is connected to the outlet of the discharge track through a connector.

4. The multi-grain packaging equipment according to claim 1, characterized in that, The packaging apparatus includes a packaging frame, a film feeding mechanism located on the upper part of the packaging frame for feeding film, and a heat sealing mechanism located below the film feeding mechanism for packaging the arriving products.

5. The multi-grain packaging equipment according to claim 4, characterized in that, The film unwinding mechanism includes an unwinding shaft rotatably connected to the packaging machine frame for mounting a roll of film, multiple guide rollers, and a guide member located below the multiple guide rollers. The end of the film passes through all the guide rollers in sequence, passes through the outer surface of the guide member, and then enters the heat sealing mechanism.

6. The multi-grain packaging equipment according to claim 5, characterized in that, The packaging machine frame is also equipped with a film sensor for detecting the film, located next to the film feeding mechanism.

7. The multi-grain packaging equipment according to claim 6, characterized in that, The heat sealing mechanism includes a vertical heat sealing assembly for vertically heat sealing the arriving film, and a horizontal heat sealing assembly located below the vertical heat sealing assembly for horizontally heat sealing and cutting the arriving film.

8. The multi-grain packaging equipment according to claim 7, characterized in that, The vertical heat sealing assembly includes a first power part and two spaced-apart first rotating shafts driven to rotate by the first power part. Two meshing heat sealing gears are provided on the two first rotating shafts. A first electric heating tube is installed inside each of the two first rotating shafts. The circumferential surface of the heat sealing gears is knurled. The horizontal heat sealing assembly includes a second power part and two spaced-apart second rotating shafts driven to rotate by the second power part. Two cooperating cutters are provided on the two second rotating shafts. A second electric heating tube is installed inside each of the two second rotating shafts. A temperature controller electrically connected to all the electric heating tubes is provided on the packaging frame.

9. The multi-grain packaging equipment according to claim 8, characterized in that, It also includes a rectangular frame fixed to the lower part of the packaging machine frame. The front and rear side plates of the frame are each provided with two horizontal sliding grooves spaced at intervals. The two ends of the two first rotating shafts are respectively installed in the two upper sliding grooves by sliders, and the two ends of the two second rotating shafts are respectively installed in the two lower sliding grooves by sliders.

10. The multi-grain packaging equipment according to claim 9, characterized in that, The frame is provided with a first pressure regulator to adjust the pressure between the two heat-sealing gears and a second pressure regulator to adjust the pressure between the two cutters. Both the first and second pressure regulators include two adjusting bolts and two locking nuts. The right side of both side plates is provided with through holes that communicate with the corresponding slide grooves. The right slider has mounting holes at the positions corresponding to the through holes. Both the through holes and the mounting holes are threaded holes. The end of the adjusting bolt passes through the corresponding locking nut and the through hole and is tightened in the mounting hole.

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