Automatic packaging machine for food production

Abstract

The application discloses a kind of automatic packaging machines for food production, and it relates to the technical field of food production.The application includes processing table, the middle part of the processing table is provided with film placing mechanism, the lower part of the film placing mechanism is provided with forming mechanism, one side of the processing table is provided with packaging mechanism, the other side of the processing table is provided with conveying device, the conveying device includes two rollers respectively rotatingly installed on both sides inside the processing table, and each roller is provided with power source.The application sets the conveying device, so that the secondary correction mechanism of "stopping material when encountering resistance-separator catching up-renewing distance" is constructed during the conveying process of conveying belt through the cooperation of swing plate and separator, which automatically eliminates the hidden danger of insufficient distance between two adjacent foods, avoids the vicious accident of packaging mechanism transverse sealing knife cutting into food, and protects the skin of soft food through the mode of "flexible material resistance + rigid material pushing".

Description

Technical Field

[0001] This invention relates to the field of food production technology, specifically to an automatic packaging machine for food production. Background Technology

[0002] With the large-scale and intelligent development of the food industry, traditional manual packaging methods can no longer meet the production demands for high efficiency, high precision, and hygiene and safety. Automatic packaging machines for food production have emerged to address this need. Through automated control technology, they achieve rapid and precise packaging, not only improving production efficiency and reducing labor costs, but also ensuring food quality and safety.

[0003] Chinese patent publication number CN219619457U discloses a fully automatic packaging machine for pastry production, belonging to the field of packaging machine technology. It includes: a support frame; a packaging machine body, mounted on the support frame, used for bagging pastries; a chip removal mechanism, located on one side of the packaging machine body, used to filter and remove debris from the surface of the pastries; and an adjustable guiding mechanism, located between the packaging machine body and the chip removal mechanism, used to guide the pastries to be packaged, ensuring they enter the packaging machine body in a line for packaging. This patent is beneficial for removing debris adhering to the surface of pastries and for guiding and arranging the pastries, thereby improving packaging efficiency.

[0004] However, the current packaging machine has the following problems: the conveying mechanism of the packaging machine lacks a position adjustment structure. When two food items are close together or stacked during the conveying process, the distance between the food items cannot be adjusted in time. The packaging mechanism (such as sealing, cutting, and bagging mechanism) will not be able to align with individual food items, resulting in the packaging position being offset. Moreover, the offset of the food position can easily cause the seal to press on the food body. Therefore, we propose an automatic packaging machine for food production. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an automatic packaging machine for food production, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic packaging machine for food production, comprising a processing table, a film feeding mechanism disposed in the middle of the processing table, a forming mechanism disposed below the film feeding mechanism, a packaging mechanism disposed on one side of the processing table, and a conveying device disposed on the other side of the processing table. The conveying device includes two rollers respectively rotatably mounted on both sides inside the processing table, each roller having a power source, and a conveyor belt externally connected to the two rollers. The top of the inner wall of the conveyor belt contacts the top of the processing table, and several partitions are uniformly and equidistantly fixed on the outer side of the conveyor belt. Side plates are fixed on both sides of the top of the processing table, and a fixed roller is fixed between two side plates. A swing plate is rotatably mounted in the middle of the fixed roller, and a torsion spring is provided between the swing plate and the fixed roller.

[0007] According to the above technical solution, a positioning device is provided above the conveyor belt. The positioning device includes two U-shaped frames fixed on the top of the processing table. A bidirectional screw is rotatably installed inside one of the U-shaped frames, and a sliding column is fixed inside the other U-shaped frame. Two screw blocks are threadedly connected to the circumferential surfaces of the bidirectional screw with opposite thread directions. Slider blocks are slidably installed on both sides of the outer wall of the sliding column. An L-shaped inclined plate is fixed between the bottom of one of the screw blocks and the slider.

[0008] According to the above technical solution, a gap is left between the bottom of the L-shaped inclined plate and the top of the processing table.

[0009] According to the above technical solution, an anti-adhesion device is provided on the lower inner wall of the conveyor belt. The anti-adhesion device includes an abutting roller rotatably installed on the inner wall of the processing table. The abutting roller abuts against the lower inner wall of the conveyor belt. Two I-shaped rollers are rotatably installed on the inner wall of the processing table, and the two I-shaped rollers are located on both sides of the abutting roller. Both I-shaped rollers are in contact with the bottom outer wall of the conveyor belt.

[0010] According to the above technical solution, a connecting rod is fixed to the inner wall of the processing table, and scrapers are fixed to both sides of the top of the connecting rod. The top of the scrapers is in contact with the bottom outer wall of the conveyor belt.

[0011] According to the above technical solution, both sides of the contact roller are fixed with protruding wheels, and both sides of the outer wall of the connecting rod are transversely penetrated and slidably installed with L-shaped slide rods. A spring is provided between the L-shaped slide rod and the connecting rod. A striking rod is fixed on the side of the vertical support rod of the L-shaped slide rod near the scraper, and the striking rod is in contact with the outer wall of the scraper.

[0012] According to the above technical solution, a semi-circular block is fixed on the outer wall of the convex wheel, and the vertical support of the L-shaped slide rod is located on the movement trajectory of the semi-circular block of the convex wheel.

[0013] According to the above technical solution, a lifting device is provided at the conveyor belt. The lifting device includes two annular inclined groove cylinders respectively fixed on both sides of the outer wall of the contact roller, and two T-shaped slide rods respectively slidably installed on both sides of the top of the processing table. An annular inclined groove is formed on the outer wall of the annular inclined groove cylinder. A fixing column is fixed at the bottom of the side of the two T-shaped slide rods that are far apart from each other. The fixing column is slidably installed inside the annular inclined groove of the annular inclined groove cylinder. Slide grooves for the fixing column to slide are formed on both sides of the top of the processing table. A triangular plate is fixed on the side of the two T-shaped slide rods that are close to each other.

[0014] This invention provides an automatic packaging machine for food production. It has the following beneficial effects:

[0015] (1) By setting up the transmission device, the present invention enables the construction of a secondary correction mechanism of "stopping material when encountering obstruction - chasing by the partition - re-setting the distance" during the conveyor belt conveying process through the coordinated cooperation of the swing plate and the partition. This automatically eliminates the hidden danger of insufficient spacing between two adjacent food items, which not only avoids the serious accident of the horizontal sealing knife of the packaging mechanism cutting into the food, but also protects the soft food surface through the "flexible material blocking + rigid material pushing" mode. Moreover, it can operate stably in harsh environments without relying on sensors, which significantly improves the yield of food packaging.

[0016] (2) By setting up a positioning device, the present invention can quickly adapt to food of different widths by adjusting the distance between two L-shaped inclined plates, and realize rapid production changeover of "one machine with multiple heads". At the same time, the convergent guide channel formed by the two L-shaped inclined plates is driven by a bidirectional screw to force the food to be centered before it enters the packaging film. This solves the problem of food deviating from the center due to arbitrary feeding position, which causes longitudinal sealing wrinkles, transverse sealing material clamping or bag shape skew. This ensures that the food after centering is evenly covered by the cylindrical packaging film, the seal is flat and beautiful, and the yield rate is significantly improved.

[0017] (3) By setting up an anti-adhesion device, the present invention enables the two I-shaped rollers and the contact roller to form a three-point support structure, and the lower outer wall of the conveyor belt bulges, so that the conveyor belt undergoes periodic curvature changes during operation. For stubborn sugar stains or grease clumps formed by repeated rolling, simple straight conveying is difficult to remove. When the conveyor belt passes through the bulge, the conveyor belt surface is stretched and deformed, causing micro-cracks to be generated in the tightly adhered dirt layer. As the conveyor belt repeatedly passes through the bulge, this alternating stress induces viscoelastic fatigue in the dirt layer until it breaks off from the conveyor belt surface, thereby removing deeper embedded dirt. At the same time, during the circulation of the conveyor belt, the scraper will scrape off the tiny food residues, sugar frosting fragments or grease adhering to the conveyor belt surface. This effectively prevents pollutants from accumulating and fermenting inside the equipment, and avoids the fragments sticking back to the clean food bottom surface during the next operation, thus ensuring food hygiene.

[0018] (4) By setting the edge-curving device, the inclined side of the triangular plate is placed below the two sides of the conveyor belt, thereby lifting the two sides of the conveyor belt upwards, making the cross-section of the belt surface instantly form a wave shape of "concave in the middle and curved on both sides". When the triangular plate is retracted, the two sides of the conveyor belt fall back. This intermittent double-sided curvature changes the geometry of the conveyor belt surface, causing a small air gap to be generated between the conveyor belt and the bottom surface of the food due to the concavity of the conveyor belt surface. This completely destroys the vacuum adsorption effect between the two, so that the food is no longer in close contact with the surface of the conveyor belt, but is in a micro-suspended state, which significantly reduces the conveying resistance and avoids large-area scratches on the bottom surface of the food. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the entire invention. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the entire invention. Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the entire invention. Figure 3 ;

[0022] Figure 4 This is a schematic diagram of a partial structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the transmission device of the present invention;

[0024] Figure 6 This is a schematic diagram of the positioning device of the present invention;

[0025] Figure 7 This is a schematic diagram of the anti-adhesion device of the present invention. Figure 1 ;

[0026] Figure 8 This is a schematic diagram of the anti-adhesion device of the present invention. Figure 2 ;

[0027] Figure 9 This is a schematic diagram of the edge-curling device of the present invention.

[0028] In the diagram: 1. Processing table; 2. Film feeding mechanism; 21. Forming mechanism; 3. Packaging mechanism; 4. Conveying device; 41. Roller; 42. Conveyor belt; 43. Partition plate; 44. Side plate; 45. Fixed roller; 46. Swinging plate; 5. Positioning device; 51. U-shaped frame; 52. Bidirectional screw; 53. Screw block; 54. Sliding column; 55. Sliding block; 56. L-shaped inclined plate; 6. Anti-adhesion device; 61. Abutment roller; 62. Connecting rod; 63. Scraper; 64. Protruding wheel; 65. L-shaped sliding rod; 66. Striking rod; 67. I-shaped roller; 7. Edge lifting device; 71. Annular inclined groove cylinder; 72. Fixed column; 73. T-shaped sliding rod; 74. Triangular plate. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0030] Please see Figure 1 - Figure 9 One embodiment of the present invention is: an automatic packaging machine for food production, including a processing table 1. A film feeding mechanism 2 is provided in the middle of the processing table 1. The film feeding mechanism 2 is an existing device for feeding roll packaging film, which will not be described in detail here. Below the film feeding mechanism 2 is a forming mechanism 21. The forming mechanism 21 is an existing device for folding the packaging film into a cylindrical shape to cover the food, which will not be described in detail here. A packaging mechanism 3 is provided on one side of the processing table 1. The packaging mechanism 3 is an existing device for sealing and cutting the packaging film, which will not be described in detail here. A conveying device 4 is provided on the other side of the processing table 1. The conveying device 4 includes two rollers 41 that are respectively rotatably installed on both sides inside the processing table 1. Each roller... 41 is equipped with a power source. The two rollers 41 are externally connected to a transmission belt 42. The top of the inner wall of the transmission belt 42 is in contact with the top of the processing table 1. Several partitions 43 are evenly and equidistantly fixed on the outside of the transmission belt 42. Side plates 44 are fixed on both sides of the top of the processing table 1. A fixed roller 45 is fixed between two side plates 44. A swing plate 46 is rotatably installed in the middle of the fixed roller 45. A torsion spring is provided between the swing plate 46 and the fixed roller 45. Through the above structure, and through the coordinated cooperation of the swing plate 46 and the partitions 43, a secondary correction mechanism of "stopping when encountering obstruction - the partition 43 chasing - re-setting the distance" is constructed during the conveying process of the transmission belt 42, which automatically eliminates the hidden danger of insufficient distance between two adjacent food items.

[0031] A positioning device 5 is installed above the conveyor belt 42. The positioning device 5 includes two U-shaped frames 51 fixed to the top of the processing table 1. A bidirectional screw 52 is rotatably installed inside one U-shaped frame 51, and a sliding column 54 is fixed inside the other U-shaped frame 51. Two screw blocks 53 are threadedly connected to the circumferential surfaces of the bidirectional screw 52 with opposite thread directions. Sliding blocks 55 are slidably installed on both sides of the outer wall of the sliding column 54. An L-shaped inclined plate 56 is fixed between the bottom of one screw block 53 and the bottom of the sliding block 55. A gap is left between the bottom of the L-shaped inclined plate 56 and the top of the processing table 1. With the above structure, by adjusting the gap between the two L-shaped inclined plates 56, food of different widths can be quickly adapted to achieve rapid production changeover with "one machine, multiple heads".

[0032] An anti-adhesion device 6 is provided on the lower inner wall of the conveyor belt 42. The anti-adhesion device 6 includes an abutment roller 61 rotatably mounted on the inner wall of the processing table 1, which abuts against the lower inner wall of the conveyor belt 42. Two I-shaped rollers 67 are rotatably mounted on the inner wall of the processing table 1, with the two I-shaped rollers 67 located on both sides of the abutment roller 61. Both I-shaped rollers 67 are in contact with the bottom outer wall of the conveyor belt 42. A collection box is provided on the inner wall of the processing table 1, and the collection box is located directly below the abutment roller 61. A connecting rod 62 is fixed on the inner wall of the processing table 1. Scrapers 63 are fixed on both sides of the top of the conveyor belt 42. The top of the scraper 63 contacts the bottom outer wall of the conveyor belt 42. With the above structure, as the conveyor belt 42 repeatedly passes over the raised part, this alternating stress induces viscoelastic fatigue in the dirt layer until it breaks off from the surface of the conveyor belt 42. The scraper 63 will also scrape off the tiny food residues, sugar frosting crumbs or grease adhering to the surface of the conveyor belt 42. This effectively prevents contaminants from accumulating and fermenting inside the equipment, and avoids the debris from sticking back to the clean food bottom surface during the next operation, thus ensuring food hygiene.

[0033] Both sides of the contact roller 61 are fixed with convex wheels 64. Both sides of the outer wall of the connecting rod 62 are transversely connected and slidably mounted with L-shaped slide rods 65. A spring is provided between the L-shaped slide rods 65 and the connecting rod 62. A striking rod 66 is fixed on the side of the vertical support of the L-shaped slide rod 65 near the scraper 63. The striking rod 66 contacts the outer wall of the scraper 63. A semi-circular block is fixed on the outer wall of the convex wheel 64. The vertical support of the L-shaped slide rod 65 is located on the movement trajectory of the semi-circular block of the convex wheel 64. With the above structure, the L-shaped slide rod 65 drives the striking rod 66 to strike the scraper 63. The vibration wave generated by the strike is transmitted to the conveyor belt 42 through the scraper 63, thereby loosening the hard sugar blocks or grease clumps that are stubbornly embedded in the texture of the conveyor belt 42 or adhered to the partition 43, and assisting the scraper 63 to complete the deep cleaning.

[0034] In use, the film unwinding mechanism 2 unwinds the roll of packaging film, which is then folded into a cylindrical shape by the forming mechanism 21 and wrapped around the food. The film is then conveyed forward by the conveyor belt 42. The packaging mechanism 3 performs longitudinal and transverse sealing and cuts to a fixed length on one side of the processing table 1 to complete the pillow-type packaging. A power-driven roller 41 drives the conveyor belt 42. The top of the inner wall of the conveyor belt 42 slides against the top of the processing table 1, forming a support surface. The conveyor belt 42 simultaneously drives several partitions 43 to move synchronously with the belt surface, placing each food item into the cavity between adjacent partitions 43 to prevent collisions, rolling, or close contact between food items. This ensures that each food item enters the packaging mechanism 3 at a stable spacing. If an abnormality occurs, such as a manual feeding error causing two food items to be close to the same partition 43, the food will pass over a swing plate 46 during each food transport by the conveyor belt 42. After the food is transported to the position of the swing plate 46, the swing plate 46 will move in the direction of the food's movement. When an obstacle is formed, the food stops moving, while the conveyor belt 42 continues to move the partition 43 until it comes into contact with the outer wall of the food. Only then will the partition 43 push the food to continue moving. The partition 43 swings as the food pushes it until it pushes the food over the partition 43. At this point, the partition 43 resets under the action of the corresponding torsion spring. The partition 43 continues to flexibly guide and limit the subsequent food. Through the coordinated operation of the swing plate 46 and the partition 43, a secondary correction mechanism of "stopping when encountering an obstacle - the partition 43 chasing - resetting the distance" is constructed during the conveyor belt 42's transport process. This automatically eliminates the hidden danger of insufficient spacing between two adjacent food items, avoiding the serious accident of the packaging mechanism 3's horizontal sealing knife cutting into the food. It also protects the soft food surface through the "flexible material blocking + rigid material pushing" mode. Moreover, it can operate stably in harsh environments without relying on sensors, significantly improving the yield rate of food packaging.

[0035] Depending on the different specifications of the food to be packaged (such as square egg yolk pies or irregularly shaped shortbreads), the operator rotates the bidirectional screw 52. The bidirectional screw 52 drives two screw blocks 53 to move synchronously in opposite directions or back to back along the axial direction. The screw blocks 53 drive the L-shaped inclined plate 56 fixed to them to move. At the same time, the L-shaped inclined plate 56 slides synchronously on the sliding column 54 through the slider 55, ensuring a smooth and jam-free movement. By adjusting the distance between the two L-shaped inclined plates 56, different widths of food can be quickly adapted, realizing rapid production changeover with "one machine, multiple heads". When the partition 43 carries the food forward with the conveyor belt 42... The food first enters the converging channel formed by two L-shaped inclined plates 56 and is gradually guided to the center line position of the conveyor belt 42, thus ensuring that the food enters the subsequent packaging process in an upright posture. The converging guide channel formed by the two L-shaped inclined plates 56 is driven by the bidirectional screw 52 to force the food to be centered before it enters the packaging film. This solves the problem of food deviating from the center due to arbitrary feeding position, which causes longitudinal sealing wrinkles, transverse sealing material clamping, or bag shape distortion. This ensures that the centered food is evenly covered by the cylindrical packaging film, the seal is flat and beautiful, and the yield rate is significantly improved.

[0036] Two I-shaped rollers 67 and an impact roller 61 form a three-point support structure on the lower outer wall and lower inner wall of the conveyor belt 42, respectively. A bulge appears on the lower outer wall of the conveyor belt 42, causing it to experience periodic curvature changes during operation. For stubborn sugar deposits or grease clumps formed by repeated rolling, simple straight-line conveying is insufficient for removal. When the conveyor belt 42 passes over the bulge, the belt surface is stretched and deformed, causing micro-cracks to form in the tightly adhered dirt layer. As the conveyor belt 42 repeatedly passes over the bulge... In this position, the alternating stress induces viscoelastic fatigue in the dirt layer until it breaks off from the surface of the conveyor belt 42, thereby removing deeper embedded dirt. The detached food debris falls into the collection box under gravity for collection. At the same time, during the circulation of the conveyor belt 42, the scraper 63 scrapes off the tiny food scraps, sugar frosting debris, or grease adhering to the surface of the conveyor belt 42. This effectively prevents contaminants from accumulating and fermenting inside the equipment, and avoids debris sticking back to the clean food bottom surface during the next operation, thus ensuring food hygiene.

[0037] During the cyclic operation of the conveyor belt 42, the contact roller 61 will rotate. The contact roller 61 will drive the cam wheels 64 on both sides to rotate synchronously. When the semi-circular block of the cam wheel 64 rotates to contact the vertical support of the L-shaped slide bar 65, the semi-circular block of the cam wheel 64 will push the L-shaped slide bar 65 to slide laterally along the connecting rod 62 and compress the spring. The L-shaped slide bar 65 will drive the striking rod 66 away from the scraper 63. When the semi-circular block of the cam wheel 64 no longer contacts the vertical support of the L-shaped slide bar 65, the L-shaped slide bar 65 will reset under the action of the corresponding spring force. The L-shaped slide bar 65 will drive the striking rod 66 to strike the scraper 63. The vibration wave generated by the striking is transmitted to the conveyor belt 42 through the scraper 63, thereby loosening the hard sugar or grease that is stubbornly embedded in the texture of the conveyor belt 42 or adhered to the partition 43, and assisting the scraper 63 to complete the deep cleaning.

[0038] Please see Figure 1 - Figure 9 Based on the above embodiments, in another embodiment of the present invention, a lifting device 7 is provided at the conveyor belt 42. The lifting device 7 includes two annular inclined groove cylinders 71 respectively fixed on both sides of the outer wall of the contact roller 61, and two T-shaped slide rods 73 respectively slidably installed on both sides of the top of the processing table 1. An annular inclined groove is formed on the outer wall of the annular inclined groove cylinder 71. A fixing post 72 is fixed at the bottom of the side of the two T-shaped slide rods 73 that are far apart from each other. The fixing post 72 is slidably installed inside the annular inclined groove of the annular inclined groove cylinder 71. The top of the processing table 1 is provided on both sides. There is a sliding groove for the fixed column 72 to slide. Triangular plates 74 are fixed on the side of the two T-shaped sliding rods 73 that are close to each other. With the above structure, the triangular plates 74 intermittently push the two sides of the conveyor belt 42 upward, so that a small air gap is generated between the conveyor belt 42 and the bottom surface of the food due to the concavity of the conveyor belt 42 surface. This completely destroys the vacuum adsorption effect between the two, so that the food is no longer in close contact with the surface of the conveyor belt 42, but is in a micro-suspended state, which significantly reduces the conveying resistance and avoids large-area scratches on the bottom surface of the food.

[0039] In use, the rotating contact roller 61 simultaneously drives the rotating annular inclined groove cylinders 71 on both sides. As the annular inclined groove cylinders 71 rotate, they drive the fixed column 72 to reciprocate linearly along the slide groove at the top of the processing table 1. The fixed column 72 drives the T-shaped slide rod 73 and the triangular plate 74 to move back and forth synchronously. Each time the triangular plate 74 moves towards the conveyor belt 42, the inclined side of the triangular plate 74 presses against the lower side edges of the conveyor belt 42, thereby lifting the two sides of the conveyor belt 42 upwards, making the cross-section of the belt surface momentarily form a wave shape of "concave in the middle and wavy on both sides". When the triangular plate 74 retracts, the two sides of the conveyor belt 42 fall back. This intermittent double-sided warping changes the geometry of the conveyor belt 42 surface, causing a tiny air gap to be generated between the conveyor belt 42 and the bottom surface of the food due to the concavity of the conveyor belt 42 surface. This completely destroys the vacuum adsorption effect between the two, so that the food is no longer tightly attached to the surface of the conveyor belt 42, but is in a micro-suspended state, which significantly reduces the conveying resistance and avoids large-area scratches on the bottom surface of the food.

[0040] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An automatic packaging machine for food production, comprising a processing table (1), characterized in that: A film-laying mechanism (2) is provided in the middle of the processing table (1), and a forming mechanism (21) is provided below the film-laying mechanism (2). A packaging mechanism (3) is provided on one side of the processing table (1), and a transmission device (4) is provided on the other side of the processing table (1). The transmission device (4) includes two rollers (41) that are rotatably installed on both sides inside the processing table (1). Each roller (41) has a power source. The two rollers (41) are connected to a transmission belt (42) on the outside. The top of the inner wall of the transmission belt (42) is in contact with the top of the processing table (1). Several partitions (43) are evenly and equidistantly fixed on the outside of the transmission belt (42). Side plates (44) are fixed on both sides of the top of the processing table (1). A fixed roller (45) is fixed between the two side plates (44). A swing plate (46) is rotatably installed in the middle of the fixed roller (45). A torsion spring is provided between the swing plate (46) and the fixed roller (45).

2. The automatic packaging machine for food production according to claim 1, characterized in that: A positioning device (5) is provided above the conveyor belt (42). The positioning device (5) includes two U-shaped frames (51) fixed on the top of the processing table (1). A bidirectional screw (52) is rotatably installed inside one of the U-shaped frames (51), and a sliding column (54) is fixed inside the other U-shaped frame (51). Two screw blocks (53) are threadedly connected to the circumferential surfaces of the bidirectional screw (52) with opposite thread directions. Slider blocks (55) are slidably installed on both sides of the outer wall of the sliding column (54). An L-shaped inclined plate (56) is fixed between the bottom of one of the screw blocks (53) and the slider (55).

3. An automatic packaging machine for food production according to claim 2, characterized in that: There is a gap between the bottom of the L-shaped inclined plate (56) and the top of the processing table (1).

4. The automatic packaging machine for food production according to claim 1, characterized in that: An anti-adhesion device (6) is provided on the lower inner wall of the conveyor belt (42). The anti-adhesion device (6) includes an abutting roller (61) rotatably installed on the inner wall of the processing table (1). The abutting roller (61) abuts against the lower inner wall of the conveyor belt (42). Two I-shaped rollers (67) are rotatably installed on the inner wall of the processing table (1). The two I-shaped rollers (67) are located on both sides of the abutting roller (61). Both I-shaped rollers (67) are in contact with the bottom outer wall of the conveyor belt (42).

5. An automatic packaging machine for food production according to claim 4, characterized in that: A connecting rod (62) is fixed to the inner wall of the processing table (1). Scrapers (63) are fixed to both sides of the top of the connecting rod (62). The top of the scraper (63) is in contact with the bottom outer wall of the conveyor belt (42).

6. An automatic packaging machine for food production according to claim 5, characterized in that: Both sides of the abutment roller (61) are fixed with protrusion wheels (64), and both sides of the outer wall of the connecting rod (62) are transversely connected and slidably mounted with L-shaped slide rods (65). A spring is provided between the L-shaped slide rods (65) and the connecting rod (62). A striking rod (66) is fixed on the side of the vertical support of the L-shaped slide rod (65) near the scraper (63). The striking rod (66) is in contact with the outer wall of the scraper (63).

7. An automatic packaging machine for food production according to claim 6, characterized in that: A semi-circular block is fixed to the outer wall of the convex wheel (64), and the vertical support of the L-shaped slide rod (65) is located on the movement trajectory of the semi-circular block of the convex wheel (64).

8. An automatic packaging machine for food production according to claim 4, characterized in that: An edge-curling device (7) is provided at the conveyor belt (42). The edge-curling device (7) includes two annular inclined groove cylinders (71) fixed on both sides of the outer wall of the contact roller (61) and two T-shaped slide rods (73) slidably installed on both sides of the top of the processing table (1). An annular inclined groove is provided on the outer wall of the annular inclined groove cylinder (71). A fixing column (72) is fixed at the bottom of the side of the two T-shaped slide rods (73) that are far apart from each other. The fixing column (72) is slidably installed inside the annular inclined groove of the annular inclined groove cylinder (71). Slide grooves for the fixing column (72) to slide are provided on both sides of the top of the processing table (1). A triangular plate (74) is fixed on the side of the two T-shaped slide rods (73) that are close to each other.

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