Drop-type box filling machine for large-packaging-bag food

Abstract

The invention discloses a falling type box filling machine for large-packaging-bag food, and relates to the field of food box filling mechanisms, the falling type box filling machine comprises a rack, a pulling plate conveying mechanism, a roller conveying mechanism, a box blocking mechanism and a falling type box filling mechanism, the pulling plate conveying mechanism comprises a belt, a telescopic assembly and an operation assembly, and the operation assembly is used for driving the belt to operate and convey products; the telescopic assembly is used for driving the belt to stretch in the conveying direction. The roller conveying mechanism is connected to the machine frame, located below the drawing plate conveying mechanism and used for conveying cartons. The carton blocking mechanism is connected to the roller conveying mechanism and used for blocking cartons. The falling type boxing mechanism is connected to the rack and located at the tail end of the drawing plate conveying mechanism, the falling type boxing mechanism is located over the carton, and the falling type boxing mechanism comprises a material receiving hopper and a turnover assembly used for driving the material receiving hopper to be turned over downwards. The carton box can be protected to be complete while boxing is completed, operation is stable, and the requirement for fast and accurate boxing of large-packaging-bag food is well met.

Description

Technical Field

[0001] The invention relates to the field of food packaging mechanisms, in particular to a drop-type packaging machine for large packaged food. Background Art

[0002] Large-packaged food refers to products with a certain fluidity, such as rice, noodles, sauces, etc., that weigh more than 5 kilograms. Large-packaged food often has different shapes during transportation.

[0003] A case packer is a device that semi-automatically or automatically packs unpackaged products or small-packaged products into transport packages. It packs the products into boxes in a certain arrangement and quantity, and closes or seals the opening of the box. Case packers can be divided into grab-type case packers and drop-type case packers.

[0004] The grabbing type case packer uses a robot to grab the product and move it to the top of the box to put it in. However, for large-packaged food, the robot needs a lot of power to grab it, and the robot is easy to be damaged, so it is not suitable. The drop-type case packer is based on the principle of conveying and dropping the case, but the current drop-type case packers are often used for bottled, boxed or barreled products. The device has poor compatibility and is often damaged when used for packing large-packaged food. The carton is even damaged due to the heavy weight of the large bag.

[0005] Therefore, there is a need for a drop-type cartoning machine for large-packaged food, which can protect the integrity of the carton while completing the cartoning and run smoothly, so as to well meet the needs of fast and accurate cartoning of large-packaged food. Summary of the invention

[0006] In order to solve the above problems, the present application provides a drop-type cartoning machine for large-packaged food.

[0007] The present application provides a drop-type cartoning machine for large-packaged food, which adopts the following technical solution: A drop-type box packing machine for large packaged food, comprising: frame; A plate-drawing conveying mechanism is connected to the frame, and comprises a belt, a telescopic assembly and a running assembly, wherein the running assembly is used to drive the belt to run and transmit the product, and the telescopic assembly is used to drive the belt to telescope along the conveying direction; A roller conveying mechanism, which is connected to the frame and located below the drawer conveying mechanism, and the roller conveying mechanism is used to transport cartons; A box blocking mechanism, connected to the roller conveying mechanism, for blocking the carton; A drop-type box packing mechanism is connected to the frame and is located at the end of the draw-plate conveying mechanism. The drop-type box packing mechanism is located directly above the carton and includes a receiving hopper and a folding assembly for driving the receiving hopper to fold downward.

[0008] By adopting the above technical solution, the products of large packaged food bags are placed on the belt for transmission. When the products are transmitted to the drop-type packing mechanism, the telescopic component drives the belt to retract quickly, and the products reach the receiving hopper under the action of gravity. The carton is transported by the roller conveyor mechanism. When the carton reaches the predetermined position, it is blocked by the carton blocking mechanism. The folding component drives the receiving hopper to fold downward, so that the products in the receiving hopper fall into the carton, completing the packing of large packaged food bags.

[0009] Optionally, the running component includes a connecting roller, a free roller, a driven roller, an auxiliary roller and a driving roller arranged from top to bottom, the belt is sequentially wound around the connecting roller, the free roller, the driven roller, the auxiliary roller and the driving roller, the connecting roller, the auxiliary roller and the driving roller are all rotatably connected to the frame, the driven roller and the free roller can both move along the conveying direction, and the frame is also connected to a driving motor for driving the driving roller to rotate.

[0010] By adopting the above technical solution, the driving motor drives the active roller to rotate, driving the belt and the connecting roller, free roller, driven roller, and auxiliary roller to rotate, so as to realize the transportation of products on the belt. By setting movable driven rollers and free rollers, the belt length remains unchanged, so that the free roller can be moved by driving the driven roller to realize the extension and retraction of the belt along the transmission direction.

[0011] Optionally, the driving assembly includes a servo motor, a synchronous wheel, a synchronous belt, a connecting member and a slide rail, the slide rail is arranged on both sides of the frame, the connecting member is slidably connected to the slide rail, the driven roller slides following the connecting member, the two ends of the connecting member are respectively connected to the synchronous belt and the belt, the two ends of the synchronous belt are wound around the synchronous wheel, the synchronous belt and the servo motor are both connected to the frame, and the synchronous wheel is connected to the output end of the servo motor.

[0012] By adopting the above technical solution, the servo motor drives the connecting part to slide along the slide rail through the synchronous wheel and the synchronous belt, and the driven roller follows the movement of the connecting part, thereby driving the belt to achieve rapid movement along the transmission direction, so that the product falls into the receiving hopper.

[0013] Optionally, the connecting member includes a slider, a belt base plate, a connecting plate and a locking synchronous belt plate, the slider is slidably connected to the slide rail, the belt base plate is fixedly connected to the belt at a position between the free roller and the driven roller, the two sides of the connecting plate are respectively connected to the slider and the belt base plate, and the locking synchronous belt plate is connected to the connecting plate and the synchronous belt.

[0014] By adopting the above technical solution, by arranging a slider, a belt bottom plate, a connecting plate and a locking synchronous belt plate, the belt can be driven by the driving component to move stably along the conveying direction of the product, and the operation is more stable.

[0015] Optionally, the material receiving hopper includes a mounting plate, a baffle and a material receiving plate, the mounting plate is located on both sides of the frame, the baffle is connected to the frame, the mounting plate and the baffle together constitute a rectangular accommodating cavity, the material receiving plate is located in the accommodating cavity, the side of the material receiving plate close to the baffle is hinged to the frame through a hinge, and the material receiving plate is used to receive products.

[0016] By adopting the above technical solution, the receiving plate can effectively receive the products dropped from the drawer conveying mechanism, and fold downward through hinges, so that the products can fall smoothly into the carton.

[0017] Optionally, the folding assembly includes a driving cylinder, a connecting plate and a connecting piece, the driving cylinder is connected to the mounting plate, the connecting plate is connected to the output end of the driving cylinder, the connecting piece is rotatably connected to the connecting plate, a side piece is provided on the side of the material receiving plate close to the mounting plate, and the connecting piece is rotatably connected to the side piece on the side away from the connecting plate.

[0018] By adopting the above technical solution, the driving cylinder drives the connecting plate to move downward, the connecting piece rotates, and drives the receiving plate to rotate along the hinge to open the receiving plate, thereby reliably putting the product into the carton below while maintaining the integrity of the carton.

[0019] Optionally, the roller conveying mechanism includes two side vertical plates connected to the frame, a plurality of rollers are rotatably connected between the side vertical plates, intervals are provided between the plurality of rollers, and the side vertical plates are connected to a driving motor for driving the rollers to rotate.

[0020] By adopting the above technical solution, the motor drives the roller to rotate, ensuring that the cartons move smoothly and quickly, thereby achieving stable transmission of the cartons.

[0021] Optionally, the box blocking mechanism includes a hanging ear, a horizontal plate, a blocking cylinder and a box blocking plate, the hanging ear is connected to the side plate, the horizontal plate is connected to the hanging ear, the blocking cylinder is connected to the horizontal plate, the box blocking plate is connected to the output end of the blocking cylinder, and the box blocking plate is arranged at the interval.

[0022] By adopting the above technical solution, the blocking cylinder extends, driving the carton blocking plate to extend from the gap higher than the roller surface, stably blocking the carton and ensuring that the carton stops at the specified position.

[0023] Optionally, the side plate is connected to a position sensor, and the position sensor is used to detect the position of the carton. The position sensor is electrically connected to a controller, and the controller is electrically connected to the blocking cylinder.

[0024] By adopting the above technical solution, the position is detected by the position sensor to achieve accurate blocking of the carton.

[0025] Optionally, a box sealing mechanism is provided at the end of the roller conveying mechanism.

[0026] By adopting the above technical solution, the carton sealing mechanism can close or seal the opening part of the carton, thereby improving the continuity of the process.

[0027] In summary, this application has the following beneficial effects: 1. The products of large packaged food bags are placed on the belt for transportation. When the products are transported to the drop-type packing mechanism, the telescopic component drives the belt to retract quickly, and the products reach the receiving hopper under the action of gravity. The carton is transported by the roller conveyor mechanism. When the carton reaches the predetermined position, it is blocked by the carton blocking mechanism. The folding component drives the receiving hopper to fold downward, so that the products in the receiving hopper fall into the carton, completing the packing of large packaged food bags.

[0028] 2. The driving cylinder drives the connecting plate to move downward, and the connecting piece rotates, driving the receiving plate to rotate along the hinge to open the receiving plate, thereby reliably putting the product into the carton below while maintaining the integrity of the carton. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the present application; Figure 2 It is a schematic diagram of the winding of the belt in the embodiment of the present application; Figure 3 It is a structural schematic diagram of the plate extraction and conveying mechanism of an embodiment of the present application; Figure 4 It is a top plan view of the plate-drawing conveying mechanism of the embodiment of the present application; Figure 5 It is a structural schematic diagram of the box blocking mechanism of an embodiment of the present application; Figure 6 It is a schematic diagram of the structure of the receiving hopper in the drop-type case packing machine of the embodiment of the present application; Figure 7 It is a schematic diagram of the structure of the folding assembly in the drop-type case packing machine according to an embodiment of the present application; Figure 8 It is a schematic diagram of the overall structure of the drop-type case packing machine according to an embodiment of the present application.

[0030] Description of reference numerals: 1. Frame; 2. Plate-drawing conveying mechanism; 21. Belt; 22. Active roller; 221. Connecting roller; 222. Free roller; 223. Driven roller; 224. Auxiliary roller; 23. Driving motor; 24. Synchronous belt; 25. Synchronous wheel; 26. Servo motor; 27. Slide rail; 28. Slider; 281. Connecting plate; 282. Locking synchronous belt plate; 283. Belt bottom plate; 3. Roller conveying mechanism; 31. Side plate; 32. Roller; 33. Position sensor; 4. Box-blocking mechanism; 41. Hanging ear; 42. Horizontal plate; 43. Blocking cylinder; 44. Box-blocking plate; 5. Drop-type box-packing mechanism; 51. Material receiving plate; 511. Side plate; 52. Mounting plate; 53. Baffle plate; 54. Driving cylinder; 55. Connecting plate; 56. Connecting plate. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-8 This application is described in further detail.

[0032] The present application embodiment discloses a drop-down box packing machine for large packaged food. Figure 1 As shown, a drop-type box packing machine for large packaged food includes a frame 1, a plate-drawing conveying mechanism 2, a roller conveying mechanism 3, a box-stopping mechanism 4, and a drop-type box packing mechanism 5. The frame 1 provides a stable support base for the entire device, the plate-drawing conveying mechanism 2 is connected to the frame 1, the drop-type box packing mechanism 5 is connected to the frame 1 and is located at the end of the plate-drawing conveying mechanism 2, the roller conveying mechanism 3 is connected to the frame 1 and is located below the plate-drawing conveying mechanism 2 and the drop-type box packing mechanism 5, and the box-stopping mechanism 4 is connected to the roller conveying mechanism 3. A box sealing mechanism is also provided at the end of the roller conveying mechanism 3.

[0033] When packing large packaged food, the product is placed on the drawer conveyor mechanism 2 for transportation, and the carton is placed on the roller conveyor mechanism 3 for transportation. The carton blocking mechanism 4 is used to block the carton. The product reaches the drop-type carton packing mechanism 5 through the drawer conveyor mechanism, and falls into the carton. When the product reaches the carton, the carton sealing mechanism is used to close or seal the opening of the carton.

[0034] The draw plate conveying mechanism 2 mainly includes a belt 21, a telescopic component and a running component. The belt 21 is used to convey products. The running component drives the belt 21 to run through multiple rollers, and the telescopic component drives the belt 21 to run along the conveying direction. The belt 21 is made of anti-slip material, and anti-slip textures are provided on the top of the belt 21 to keep the carton on the belt 21 The smooth transmission of the belt will not occur.

[0035] Specifically, if Figure 2 As shown, the running assembly is composed of a connecting roller 221, a free roller 222, a driven roller 223, an auxiliary roller 224 and a driving roller 22. The belt 21 is sequentially wound around the connecting roller 221, the free roller 222, the driven roller 223, the auxiliary roller 224 and the driving roller 22 arranged from top to bottom to form a closed loop, and the total length of the belt 21 remains unchanged. There are three auxiliary rollers 224. The connecting roller 221, the three auxiliary rollers 224 and the driving roller 22 are all fixed to the frame 1 and are rotatably connected to the frame 1, while the driven roller 223 and the free roller 222 can move along the conveying direction while rotating. A driving motor 23 is installed on the frame 1 to drive the rotation of the driving roller 22, drive the operation of the belt 21, and ensure the stability and flexibility of the belt 21 during operation. The driven roller 223 can be wound only by the belt 21, or a moving groove can be opened in the frame 1, the length direction of the moving groove is parallel to the conveying direction of the product, and the driven roller 223 is rotatably connected to the moving groove and can move along the moving groove. When the length of the belt 21 remains unchanged, the positions of the connecting roller 221, the auxiliary roller 224 and the driving roller 22 remain unchanged. At this time, when the driven roller 223 is driven to move, the free roller 222 will also be driven to move, so that the distance between the free roller 222 and the connecting roller 221 is changed, and the belt 21 moves along the conveying direction.

[0036] like Figure 3 and Figure 4As shown, the driving assembly is used to drive the driven roller 223 to move along the conveying direction, including a servo motor 26, a synchronous wheel 25, a synchronous belt 24, a connecting piece and a slide rail 27. The connecting piece specifically includes a slider 28, a belt bottom plate 283, a connecting plate 281 and a locking synchronous belt plate 282. The synchronous belt 24 is connected to the frame 1 and can rotate. The two ends of the synchronous belt 24 are respectively wound around two synchronous wheels 25. The servo motor 26 is connected to the frame 1 and drives one of the synchronous wheels 25 to rotate, so that the synchronous belt 24 is driven by the servo motor 26 to operate. The locking synchronous belt plate 282 is connected to the synchronous belt 24, and the locking synchronous belt plate 282 is connected to the connecting plate 281. The two sides of the connecting plate 281 are respectively connected to the slider 28 and the belt base plate 283. The belt base plate 283 is fixedly connected to the belt 21 between the free roller 222 and the driven roller 223. The slider 28 is slidably connected to the slide rail 27, and the slide rail 27 is located on both sides of the frame 1. The driven roller 223 moves with the movement of the belt base plate 283.

[0037] In the process of conveying large packaged food, the product is located on the belt 21 and transported at the part of the belt 21 between the connecting roller 221 and the free roller 222. The servo motor 26 drives the synchronous belt 24, and drives the belt bottom plate 283 and the driven roller 223 to move in the same direction as the product transmission through transmission. At this time, the free roller 222 also moves in the same direction as the product transmission. The belt 21 stretches to reach the drop-type boxing mechanism 5, and the front-end product is located at the front end of the belt 21. At this time, the synchronous belt 24 runs in the opposite direction, and the belt bottom plate 283 and the driven roller 223 quickly move in the opposite direction of the product transmission. The free roller 222, that is, the belt 21, quickly retracts, and the front-end product reaches the predetermined position under the action of gravity. At the same time, due to the retraction of the belt 21, the subsequent products re-reach the front end of the belt 21. Thereafter, the above process is repeated to achieve the purpose of reaching the drop-type boxing mechanism 5. The synchronous belt 24 reaches the driven roller 223 to move, and the cost is lower than that of components such as screw rods, which is conducive to cost saving.

[0038] like Figure 1 and Figure 5 As shown, the roller conveyor mechanism 3 is mainly used to transport cartons, and is composed of two side plates 31 and a plurality of rollers 32 located between the two side plates 31 and at a certain interval. The side plates 31 are fixed on the frame 1, and are connected to a drive motor to drive one of the rollers 32 to rotate, thereby driving the transportation of the cartons through friction. There is a gap between the cartons transported on the roller conveyor mechanism 3. When the carton blocking mechanism 4 blocks the carton, the other cartons can continue to be transported forward.

[0039] The box-blocking mechanism 4 is used for temporary positioning of cartons, and includes a hanging ear 41, a horizontal plate 42, a blocking cylinder 43 and a box-blocking plate 44. The two hanging ears 41 are respectively mounted on the two side vertical plates 31, the horizontal plate 42 is mounted between the lower parts of the two hanging ears 41, the blocking cylinder 43 is mounted on the horizontal plate 42, and the box-blocking plate 44 is connected to the output end of the blocking cylinder 43. The box-blocking plate 44 is arranged at the interval, so that the blocking cylinder 43 drives the box-blocking plate 44 to extend from the gap, the box-blocking plate 44 is higher than the surface of the roller 32 and blocks the carton, so that the carton stops below the drop-down packing mechanism 5. In order to achieve accurate blocking of the carton, the side vertical plate 31 is connected to a position sensor 33 for detecting the position of the carton, and the position sensor 33 is electrically connected to a controller, and the controller is used to control the action of the blocking cylinder 43.

[0040] like Figure 6 As shown, the core part of the drop-type packing mechanism 5 is a receiving hopper and a folding assembly. The receiving hopper comprises a mounting plate 52, a baffle 53 and a receiving plate 51, wherein the number of the mounting plate 52, the baffle 53 and the receiving plate 51 is set to two. The two mounting plates 52 are respectively fixedly connected to the two sides of the frame 1, and the two baffles 53 are also fixed on the frame 1. The length direction of the baffle 53 is perpendicular to the length direction of the mounting plate 52, and the two mounting plates 52 and the two baffles 53 together form a rectangular accommodating cavity. The two receiving plates 51 are located in the accommodating cavity, and the side of the receiving plate 51 close to the baffle 53 is hinged to the frame 1 through a hinge, and the two receiving plates 51 are abutted against each other on the side away from the baffle 53, and the side of the receiving plate 51 close to the mounting plate 52 is provided with a side piece 511. The two receiving plates 51 receive the products. When the belt 21 is retracted, the products arrive in the receiving hopper, and the receiving hopper can accommodate two or four large packages of food at the same time. By controlling the placement of the products on the belt 21 or the arrival position of the belt 21, the products can fall into both sides of the receiving hopper. The hinge allows the receiving plates 51 to be folded around the frame 1. The two receiving plates 51 are separated from each other, and a gap is formed in the middle to facilitate the product to be put into the carton below. A quantity sensor for detecting the number of products is also provided in the receiving hopper. When the predetermined number is reached, the receiving plates 51 are folded, and the products fall into the box.

[0041] like Figure 7 and Figure 8As shown, the folding assembly is used to drive the material receiving plate 51 to fold, and is composed of a driving cylinder 54, a connecting plate 55 and a connecting piece 56. The driving cylinder 54 is fixed on the mounting plate 52, the connecting plate 55 is connected to the output end of the driving cylinder 54, and two connecting pieces 56 are provided. The two connecting pieces 56 are connected to the two ends of the connecting plate 55 by rotation, and the other end of the connecting piece 56 away from the connecting plate 55 is connected to the side piece 511 by hinge. By setting a three-point hinge form in which the connecting piece 56 is hinged to the side piece 511, the connecting piece 56 is hinged to the connecting plate 55, and the material receiving plate 51 is hinged to the frame 1, the driving cylinder 54 drives the connecting plate 55 to move downward, drives the material receiving plate 51 to rotate along the hinge, and realizes the drop packing of the product. In the present application, the driving cylinder 54 is arranged on a mounting plate 52 which is perpendicular to the hinge setting direction, and the driving cylinder 54 and two connecting plates 56 form a triangle, which is more stable and has a stronger pressure-bearing capacity, thereby being more conducive to bearing the weight of the product and extending the service life of the driving cylinder 54.

[0042] It should be noted that the shape of the connecting piece 56 is V-shaped, divided into two sides with an angle of 110-120°, and the angle is toward the side close to the connecting plate 55. By setting the shape and angle of the connecting piece 56, when the driving cylinder 54 pushes the connecting plate 55 downward, the connecting piece 56 moves outward, and the gap between the two connecting pieces 56 increases. The folding angle of the carton placed on the conveyor belt of the roller 32 can be set to an inward folding state of less than 90 degrees. When the connecting piece 56 moves, the two ends of the carton can be propped open by the connecting piece 56 to ensure that the product can fall into the carton and maintain the integrity of the carton. By setting the inward folding angle, it is also convenient for the sealing mechanism to operate and facilitate the sealing mechanism to fold up and seal the folding angle.

[0043] The implementation principle of the drop-type box packing machine for large packaged food in the embodiment of the present application is as follows: the product is placed on the belt 21 on the drawer conveyor mechanism 2 for transportation, the belt 21 stretches to drive the product to the top of the receiving hopper, at this time, the servo motor 26 drives the synchronous belt 24 to run in the opposite direction, the belt 21 quickly retracts, and the product at the front end of the belt 21 reaches the receiving plate 51 under the action of gravity, and the subsequent products reach the front end of the belt 21 again. By repeating the process, the product is transported from the belt 21 to the receiving plate 51.

[0044] The cartons are placed on the roller conveyor mechanism 3 for transportation. When the position sensor 33 detects that the cartons have reached the predetermined position, the blocking cylinder 43 drives the carton blocking plate 44 to extend from the gap. The carton blocking plate 44 is higher than the surface of the roller 32 and blocks the carton. When a predetermined number of products are present in the receiving hopper, the driving cylinder 54 drives the connecting plate 55 to move downward, driving the receiving plate 51 to rotate along the hinge, so that the products can be dropped and packed, meeting the needs of fast and accurate packing of large-packaged food.

[0045] This specific implementation manner is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make non-creative modifications to the specific implementation manner as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A drop-type box packing machine for large packaged food, characterized in that: include: Rack (1); A draw plate conveying mechanism (2) connected to the frame (1), the draw plate conveying mechanism (2) comprising a belt (21), a telescopic component and a running component, the running component being used to drive the belt (21) to operate and transport products, and the telescopic component being used to drive the belt (21) to telescope along a conveying direction; A roller conveying mechanism (3), which is connected to the frame (1) and is located below the drawer conveying mechanism (2), and the roller conveying mechanism (3) is used to convey cartons; A box blocking mechanism (4), which is connected to the roller conveying mechanism (3) and is used to block the carton; A drop-type box packing mechanism (5) is connected to the frame (1) and is located at the end of the draw-plate conveying mechanism (2). The drop-type box packing mechanism (5) is located directly above the carton and includes a receiving hopper and a folding assembly for driving the receiving hopper to fold downward.

2. A drop-type box packing machine for large-packaged food according to claim 1, characterized in that: The running component comprises a connecting roller (221), a free roller (222), a driven roller (223), an auxiliary roller (224) and a driving roller (22) which are arranged from top to bottom; the belt (21) is sequentially wound around the connecting roller (221), the free roller (222), the driven roller (223), the auxiliary roller (224) and the driving roller (22); the connecting roller (221), the auxiliary roller (224) and the driving roller (22) are all rotatably connected to the frame (1); the driven roller (223) and the free roller (222) are both movable along the conveying direction; the frame (1) is also connected to a driving motor (23) for driving the driving roller (22) to rotate.

3. A drop-type box packing machine for large-packaged food according to claim 2, characterized in that: The driving assembly comprises a servo motor (26), a synchronous wheel (25), a synchronous belt (24), a connecting piece and a slide rail (27), wherein the slide rail (27) is arranged on both sides of the frame (1), the connecting piece is slidably connected to the slide rail (27), the driven roller (223) slides following the connecting piece, the two ends of the connecting piece are respectively connected to the synchronous belt (24) and the belt (21), the two ends of the synchronous belt (24) are wound around the synchronous wheel (25), the synchronous belt (24) and the servo motor (26) are both connected to the frame (1), and the synchronous wheel (25) is connected to the output end of the servo motor (26).

4. A drop-down box packing machine for large-packaged food according to claim 3, characterized in that: The connecting member comprises a slider (28), a belt base plate (283), a connecting plate (281) and a locking synchronous belt plate (282); the slider (28) is slidably connected to the slide rail (27); the belt base plate (283) is fixedly connected to the belt (21) at a position between the free roller (222) and the driven roller (223); the two sides of the connecting plate (281) are respectively connected to the slider (28) and the belt base plate (283); the locking synchronous belt plate (282) is connected to the connecting plate (281) and the synchronous belt (24).

5. The drop-down box packing machine for large-packaged food according to claim 1, characterized in that: The receiving hopper comprises a mounting plate (52), a baffle plate (53) and a receiving plate (51); the mounting plate (52) is located on both sides of the frame (1); the baffle plate (53) is connected to the frame (1); the mounting plate (52) and the baffle plate (53) together form a rectangular accommodating cavity; the receiving plate (51) is located in the accommodating cavity; a side of the receiving plate (51) close to the baffle plate (53) is hinged to the frame (1) through a hinge; and the receiving plate (51) is used to receive products.

6. A drop-type box packing machine for large-packaged food according to claim 5, characterized in that: The folding assembly comprises a driving cylinder (54), a connecting plate (55) and a connecting piece (56); the driving cylinder (54) is connected to the mounting plate (52); the connecting plate (55) is connected to the output end of the driving cylinder (54); the connecting piece (56) is rotatably connected to the connecting plate (55); a side piece (511) is provided on a side of the material receiving plate (51) close to the mounting plate (52); and a side of the connecting piece (56) away from the connecting plate (55) is rotatably connected to the side piece (511).

7. The drop-down box packing machine for large-packaged food according to claim 1, characterized in that: The roller conveying mechanism (3) comprises two side vertical plates (31) connected to the frame (1), a plurality of rollers (32) are rotatably connected between the side vertical plates (31), intervals are provided between the plurality of rollers (32), and the side vertical plates (31) are connected to a driving motor for driving the rollers (32) to rotate.

8. The drop-down box packing machine for large-packaged food according to claim 7, characterized in that: The box blocking mechanism (4) comprises a hanging ear (41), a transverse plate (42), a blocking cylinder (43) and a box blocking plate (44); the hanging ear (41) is connected to the side vertical plate (31); the transverse plate (42) is connected to the hanging ear (41); the blocking cylinder (43) is connected to the transverse plate (42); the box blocking plate (44) is connected to the output end of the blocking cylinder (43); and the box blocking plate (44) is arranged at the interval.

9. A drop-type box packing machine for large-packaged food according to claim 8, characterized in that: The side upright plate (31) is connected to a position sensor (33), and the position sensor (33) is used to detect the position of the carton. The position sensor (33) is electrically connected to a controller, and the controller is electrically connected to the blocking cylinder (43).

10. The drop-down box packing machine for large-packaged food according to claim 1, characterized in that: A box sealing mechanism is provided at the end of the roller conveying mechanism (3).

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