Automatic peanut product packaging machine with sealing mechanism

Abstract

The invention relates to the technical field of packaging bag sealing mechanisms, in particular to an automatic peanut product packaging machine with a sealing mechanism, which comprises a case, a power transmission part is mounted in a mounting cavity of the case, and two output ends of the power transmission part are respectively connected with a vertical linkage mechanism. A contra-rotating joint cutting mechanism is installed on the inner wall of the machine box at the front end of each vertical linkage mechanism, the upper ends of the two vertical linkage mechanisms are connected with feeding units located at the corresponding positions above the machine box, and a plastic packaging film supply mechanism is installed above each feeding unit. And a sealing mechanism is arranged above the contra-rotating joint cutting mechanism. By means of a gear transmission structure of the power transmission part and the vertical linkage mechanism, it is ensured that the rotating speed of the feeding unit is uniform and stable, continuous and uniform feeding of peanut products is achieved in cooperation with the quantitative feeding design of the storage round cavity and the discharging pipe, and the common problem of material accumulation or material breakage in a traditional feeding mode is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging bag sealing mechanisms, and in particular to an automatic peanut product packaging machine with a sealing mechanism. Background Art

[0002] In the field of food packaging, as common snack foods, peanut products' automatic packaging machines' sealing quality directly affects the product's shelf life and quality. Therefore, the sealing quality and production efficiency of packaging bags are important indicators for measuring the performance of packaging equipment.

[0003] Currently, the sealing mechanisms adopted by most automatic peanut product packaging machines on the market mainly perform sealing operations on packaging bags that have already undergone back-edge sealing and only have a top filling port left.

[0004] This process flow of traditional sealing equipment leads to obvious defects in the entire packaging process: First, since the upstream packaging bag edge-sealing process needs to be completed on other equipment, the entire packaging process is split into multiple independent links. The packaging bags need to be transported between different equipment, which not only increases operation processes such as manual handling and equipment docking, reduces production efficiency, but also easily causes packaging bag damage due to collision and friction during transportation, affecting the product qualification rate.

[0005] Second, the transfer and transportation between multiple processes and multiple equipment require more installation space, increasing the enterprise's site and operation costs. In addition, the operating rhythms between different equipment are difficult to accurately match, prone to production delays or waiting situations, resulting in poor continuity of the sealing operation and unable to meet the modern large-scale and high-efficiency peanut product packaging requirements.

[0006] Based on this, the present invention optimizes and improves the problems existing in the prior art, such as the fragmentation of the packaging process and the low production efficiency caused by transfer between equipment, and hereby proposes a sealing mechanism for realizing the edge-sealing and sealing of packaging bags based on continuity and an automatic peanut product packaging machine with this mechanism. Summary of the Invention

[0007] To solve one of the above technical problems, the technical solution adopted by the present invention is: an automatic packaging machine for peanut products with a sealing mechanism, including a machine case. A power transmission member is installed in the installation cavity of the machine case. Two output ends of the power transmission member are respectively connected to vertical linkage mechanisms. On the inner wall of the machine case at the front end of each vertical linkage mechanism, a pair of rotating slit mechanisms are respectively installed. The upper ends of the two vertical linkage mechanisms are respectively connected to a feeding unit at a corresponding position above the machine case. Above each feeding unit, a plastic packaging film supply mechanism is respectively installed. On both of the plastic packaging film supply mechanisms, a roll of plastic packaging film is installed. A sealing mechanism is arranged above the pair of rotating slit mechanisms. The sealing mechanism is used to seal the plastic packaging film passing through its interior and form a packaging bag.

[0008] Based on any of the above technical solutions, a further optimization is: universal wheels with a self-locking function are respectively fixedly installed at the four corners of the bottom of the machine case.

[0009] Based on any of the above technical solutions, a further optimization is: the ends of each plastic packaging film are respectively pre-fed into the interior of the corresponding sealing mechanism. The ends of each plastic packaging film respectively complete the side, top and bottom sealing in the interior of its corresponding sealing mechanism to form a packaging bag. Before the top sealing of each packaging bag, an appropriate amount of peanut products are fed into its interior by the feeding unit corresponding above the sealing mechanism.

[0010] Based on any of the above technical solutions, a further optimization is: the vertical linkage mechanism includes a vertical and fixed-axis arranged vertical shaft. The bottom of the vertical shaft is connected to the corresponding output end of the power transmission member. A small gear is coaxially fixedly connected to the outer side wall of the upper part of the vertical shaft. A large gear is meshed on one side of the small gear. The large gear is coaxially fixedly installed at the lower end of the corresponding feeding unit and is used to drive it to rotate.

[0011] Based on any of the above technical solutions, a further optimization is as follows: The feeding unit includes a vibrating bowl installed above the chassis. A storage circular cavity is arranged inside the vibrating bowl. A plurality of blanking pipes are evenly spaced along the circumference at the bottom of the storage circular cavity. The bottom of each blanking pipe is movably abutted against the top of a support seat below the vibrating bowl. Two guide pipe joints for receiving granular peanut products falling from each blanking pipe are installed on the front side of the bottom of the support seat. Each guide pipe joint is located above the middle of the sealing mechanism and is used for feeding materials into the sealing mechanism. A rotating shaft is fixed at the center of the top of the vibrating bowl. The lower end of the rotating shaft movably passes through the central hole of the support seat and penetrates into the interior of the chassis and is coaxially fixed to a large gear. The center bottom of the support seat is fixed to the top of the chassis through a support sleeve. An inlet component is installed on one side of the vibrating bowl. The inlet component is used for feeding peanut products into the storage circular cavity.

[0012] Based on any of the above technical solutions, a further optimization is as follows: The inlet component includes a feed bin fixed to the rear side of the top of the chassis through a vertical frame. The feed bin is located above the rear side of the storage circular cavity. A replenishing pipe that cooperates with the tops of two corresponding blanking pipes is installed at the top of the feed bin. The lower end of the replenishing pipe extends into the interior of the storage circular cavity.

[0013] Based on any of the above technical solutions, a further optimization is as follows: The plastic packaging film supply mechanism includes a side stand fixed to the upper part of the chassis on one side of the vibrating bowl. A horizontal mounting shaft is installed at the front end of the side stand. One end of the horizontal mounting shaft movably penetrates to the outside of the side stand and is connected to a winding motor fixedly installed on the top of the side stand. The winding motor is a servo motor. The output end of the winding motor is equipped with a bevel gear reducer. The output end of the bevel gear reducer is connected to a belt transmission component installed on the outer side wall of the side stand. The output end of the belt transmission component is detachably fixedly connected to the outer end of the horizontal mounting shaft. A roll of plastic packaging film is detachably fixedly sleeved on the outer side wall of the horizontal mounting shaft. A first reversing shaft is arranged at the rear side of the horizontal mounting shaft. A second reversing shaft is arranged below the first reversing shaft. A third reversing shaft is arranged at the front side of the second reversing shaft. The outer ends of the first reversing shaft, the second reversing shaft, and the third reversing shaft are fixed to the side stand and are all arranged parallel to the horizontal mounting shaft.

[0014] Based on any of the above technical solutions, a further optimization is as follows: The end of the roll of plastic packaging film sequentially bypasses the outer side walls of the first reversing shaft, the second reversing shaft, and the third reversing shaft and extends downward into the interior of the sealing mechanism.

[0015] Based on any of the above technical solutions, a further optimization is: a pre-folding guiding mechanism is installed on the outer side wall of the middle part of the third reversing shaft, and the pre-folding guiding mechanism is used to bend the passing plastic packaging film along the middle part to form a V-shaped cross-section state and then continue to convey it into the internal part of the downstream sealing mechanism.

[0016] Based on any of the above technical solutions, a further optimization is: the pre-folding guiding mechanism includes a horizontal installation pipe fixedly sleeved on the outer side wall of the middle part of the third reversing shaft. An expansion wheel is arranged on the outer side wall of the middle part of the horizontal installation pipe, and a plurality of guiding wheel groups are evenly spaced along the circumference on the outer side wall of the edge of the expansion wheel; each guiding wheel group includes a horizontally arranged guiding shaft, and both ends of each guiding shaft pass through the corresponding through holes at the edge of the expansion wheel. Smooth guiding wheels are movably installed on the outer side walls of each guiding shaft, and each smooth guiding wheel is located outside the expansion wheel and is used to upwardly abut against the middle part of the passing plastic packaging film. When the smooth guiding wheels are in a tightened state, the middle part of the plastic packaging film bulges upward to form a ridge shape.

[0017] Based on any of the above technical solutions, a further optimization is: the opposite rotation and slitting mechanism includes a counter-rotating motor fixedly installed on the inner wall of the chassis. The counter-rotating motor is a servo motor. A transmission belt component is fixedly installed on the motor shaft of the counter-rotating motor. The output end of the transmission belt component is fixedly installed on the outer side wall of the inner end of a first shaft. A second shaft is arranged in parallel and at intervals on one side of the first shaft. The outer ends of the first shaft and the second shaft both movably pass through to the front side of the chassis and are connected and cooperated with a slitting member. Transmission gears that mesh with each other are fixedly installed on the outer side walls of the ends of the first shaft and the second shaft respectively.

[0018] Based on any of the above technical solutions, a further optimization is: the slitting member includes two groups of oppositely arranged pressure-cutting wheels. A plurality of teeth are evenly spaced along the circumference on the surface of each pressure-cutting wheel. The two groups of pressure-cutting wheels are respectively coaxially fixed on the outer side walls of the corresponding first shaft and the second shaft. Extrusion gaps are respectively formed between the two groups of pressure-cutting wheels for the middle heat-sealed vertical seam and the edge heat-sealed vertical seam of the sealed packaging bag to pass through. When the middle part and the left side part of the formed packaging bag respectively pass downward through their corresponding extrusion gaps, the middle heat-sealed vertical seam and the edge heat-sealed vertical seam will be pressure-cut respectively and a plurality of easy-tearing seams will be formed on their respective surfaces.

[0019] On the basis of any of the above technical solutions, further optimization is that: the sealing mechanism includes an outer constraint cylinder fixed under the two guide pipe joints of the feeding unit, and a through mold sleeve is fixed inside the outer constraint cylinder, and the middle parts of the through mold sleeves are close to each other to form a molding cavity with a gourd-shaped cross-section and a smooth inner surface, and the plastic packaging film enters the molding cavity from the upper part and passes through the lower part, and the two edges of the vertical section of the plastic packaging film located in the molding cavity are folded in half at the left side of the molding cavity, and an upper sealing plate and a lower sealing plate are sealed and fixed at the top and bottom of the through mold sleeve respectively, and a negative pressure adsorption chamber is formed between the outer constraint cylinder and the through mold sleeve, a negative pressure pump is installed at the bottom of the negative pressure adsorption chamber, and a plurality of adsorption holes are provided on the surface of the through mold sleeve, and a middle film edge sealer is symmetrically installed on both sides of the middle of the negative pressure adsorption chamber, and an edge film edge sealer is symmetrically installed on both sides of the left end of the negative pressure adsorption chamber.

[0020] Based on any of the above technical solutions, further optimization is that when the negative pressure pump is started, the outer surface of the plastic packaging film located in the molding cavity will be tightly adsorbed and fixed to the inner surface of the molding cavity through the suction of each adsorption hole.

[0021] Based on any of the above technical solutions, further optimization is that: the middle film edge sealer includes a fixed middle telescopic cylinder, the telescopic end of the middle telescopic cylinder movably extends into the interior of the forming cavity and is fixedly connected to the heat sealing head at its end; the two heat sealing heads achieve heat sealing of the middle film by squeezing the two sides of the middle of the plastic packaging film and form a middle heat-sealed vertical seam during the passive falling of the plastic packaging film, and the films on both sides of the middle heat-sealed vertical seam respectively form film spaces for storing peanut products.

[0022] Based on any of the above technical solutions, further optimization is that: the edge film sealer includes a fixed edge telescopic cylinder, the telescopic end of the edge telescopic cylinder movably extends into the interior of the forming cavity and is fixedly connected to the heat sealing head at its end; the two heat sealing heads squeeze the two sides of the edge docking part of the plastic packaging film to achieve heat sealing of the edge film and form a vertical heat-sealed edge seam during the passive falling of the plastic packaging film.

[0023] The two material guide pipe joints are respectively located directly above the corresponding film spaces and are used to feed granular peanut products into the film spaces.

[0024] On the basis of any of the above technical solutions, further optimization is that: a transverse heat sealer is installed at the lower part of the outer restraint cylinder, and the transverse heat sealer is used to achieve heat sealing along the width direction of the packaging bag.

[0025] On the basis of any of the above technical solutions, a further optimization is as follows: The horizontal heat sealer includes mounting edge seats respectively and fixedly installed on both sides of the lower part of the outer restraint cylinder. The two mounting edge seats are arranged oppositely. Horizontally telescopic cylinders are symmetrically installed on the opposite side walls of the two mounting edge seats respectively. Inner positioning cutters and outer pressing cutters are installed at the telescopic ends of the two horizontally telescopic cylinders respectively. The inner positioning cutter and the outer pressing cutter cooperate to realize the horizontal pressing of the packaging bag. A horizontal heat sealing head is fixed at the end of the outer pressing cutter. The horizontal heat sealing head is used for heat-sealing the pressed part of the packaging bag and forming a horizontal sealing seam.

[0026] On the basis of any of the above technical solutions, a further optimization is as follows: The power transmission member includes a main drive motor fixed at the bottom of the inner cavity of the machine case. Main speed reducers are respectively and fixedly installed on both sides of the front end of the main drive motor. The main speed reducers adopt a bevel gear speed reducer structure. The output ends of the main speed reducers are respectively fixedly connected to the bottoms of the corresponding vertical shafts above. Power belt transmission components are respectively connected to the power input ends of the main speed reducers. The belt pulleys at the input ends of the power belt transmission components are all installed on the motor shaft of the main drive motor. When the drive motor operates, it drives the corresponding power belt transmission component to operate. The corresponding main speed reducer is driven to operate through the power belt transmission component. When the main speed reducer operates, it drives the corresponding vertical shaft to rotate.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Through the gear transmission structure of the power transmission member and the vertical linkage mechanism, the present invention ensures that the rotation speed of the feeding unit (vibratory bowl) is uniform and stable. Cooperating with the quantitative feeding design of the storage circular cavity and the blanking pipe, it realizes the continuous and uniform supply of peanut products, avoids the common problems of material accumulation or material breakage in the traditional feeding method, and improves the feeding accuracy and production continuity.

[0028] 2. The plastic packaging film supply mechanism of the present invention adopts a multi-stage reversing shaft and a pre-folding guiding mechanism. The middle part of the plastic packaging film is pre-bent through a guiding wheel group to form a shape convenient for subsequent forming in advance, reduces the forming resistance in the sealing mechanism, improves the film conveying efficiency, and at the same time ensures the accurate position after the film is folded in half, improving the forming efficiency and regularity of the packaging bag.

[0029] 3. The sealing mechanism of the present invention tightly fixes the plastic packaging film on the inner surface of the forming cavity through a negative pressure adsorption system, replacing the traditional mechanical clamping method, avoiding damage to the film caused by mechanical contact, and at the same time the uniform adsorption force ensures the accurate heat-sealing position, improving the sealing quality and film compatibility, and can adapt to plastic packaging films of various materials and thicknesses.

[0030] 4. The transverse heat sealer of the present invention is designed to be linked with the counter-rotating slitting mechanism. After the packaging bag is heat-sealed, the pressure cutting wheel squeezes at the heat-sealed vertical seam to form an easy-tear seam, which facilitates consumers to easily open the package. At the same time, it avoids the complete breakage of the film and material leakage caused by the traditional cutting method, taking into account both the convenience of use and the packaging tightness.

[0031] 5. The present invention integrates the full-process automatic procedures, realizing automatic linkage operations from power transmission, feeding, film handling to sealing, filling, and cutting. With the design of the universal wheels with self-locking function at the bottom of the machine case, it not only ensures the flexible movement and stable positioning of the equipment, but also greatly reduces manual intervention, improves the overall production efficiency, reduces labor costs and operation errors, and is applicable to large-scale peanut product packaging production. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. In all the drawings, similar elements or components are generally identified by similar reference numerals. In the drawings, the elements or components are not necessarily drawn to scale.

[0033] Figure 1 It is a schematic side view structure diagram of the present invention.

[0034] Figure 2 It is a schematic rear view structure diagram of the present invention.

[0035] Figure 3 It is a schematic partial three-dimensional structure diagram of the present invention.

[0036] Figure 4 It is a schematic structure diagram of the winding mode of the plastic packaging film of the present invention.

[0037] Figure 5 It is a schematic partial three-dimensional structure diagram of the first perspective of the present invention.

[0038] Figure 6 It is a schematic partial three-dimensional structure diagram of the second perspective of the present invention.

[0039] Figure 7 It is an enlarged schematic structure diagram of the sealing mechanism of the present invention.

[0040] Figure 8 For Figure 7 front view structure diagram.

[0041] Figure 9 It is a schematic internal sectional structure diagram of the sealing mechanism of the present invention in a top view state.

[0042] Figure 10 For Figure 9 partial structure diagram.

[0043] Figure 11 is Figure 10 a side view structural schematic diagram of

[0044] Figure 12 an enlarged structural schematic diagram of the pre - folding guiding mechanism of the present invention.

[0045] In the figure, 1. chassis; 2. plastic packaging film; 3. sealing mechanism; 4. small gear; 5. large gear; 6. vibrating disk; 7. storage circular cavity; 8. blanking pipe; 9. support seat; 10. material guiding pipe joint; 11. rotating shaft; 12. feeding bin; 13. replenishing pipe; 14. side - standing seat; 15. horizontal installation shaft; 16. winding motor; 17. bevel gear reducer; 18. belt transmission component; 19. first reversing shaft; 20. second reversing shaft; 21. third reversing shaft; 22. pre - folding guiding mechanism; 23. horizontal installation pipe; 24. expanding wheel; 25. guiding shaft; 26. smooth guiding wheel; 27. counter - rotating motor; 28. transmission belt component; 29. first shaft; 30. second shaft; 31. counter - pressing cutting wheel; 32. power belt transmission component; 33. outer constraint cylinder; 34. through - mold sleeve; 35. forming cavity; 36. upper sealing plate; 37. lower sealing plate; 38. negative pressure adsorption cavity; 39. negative pressure pump; 40. adsorption hole; 41. middle telescopic cylinder; 42. heat - sealing head; 43. edge telescopic cylinder; 44. transverse heat sealer; 45. installation edge seat; 46. transverse telescopic cylinder; 47. inner positioning cutter; 48. outer pressing cutter; 49. transverse heat - sealing head; 50. universal wheel; 51. packaging bag; 52. middle heat - sealing vertical seam; 53. edge heat - sealing vertical seam; 54. transverse blocking seam; 55. main driving motor; 56. main reducer; 57. vertical shaft; 58. support sleeve; 59. transmission gear. Specific Embodiments

[0046] The embodiments of the technical solution of the present invention will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solution of the present invention more clearly, so they are only examples and cannot be used to limit the protection scope of the present invention. The specific structure of the present invention is as Figures 1 - 12 shown in

[0047] Embodiment 1: An automatic peanut product packaging machine with a sealing mechanism, including a machine case 1. A power transmission member is installed in the installation cavity of the machine case 1. The two output ends of the power transmission member are respectively connected with vertical linkage mechanisms. On the inner wall of the machine case 1 at the front end of each vertical linkage mechanism, a pair of rotary cutting and slitting mechanisms are respectively installed. The upper ends of the two vertical linkage mechanisms are respectively connected with a feeding unit at a corresponding position above the machine case 1. Above each feeding unit, a plastic packaging film supply mechanism is respectively installed. On both plastic packaging film supply mechanisms, a roll of plastic packaging film 2 is installed. Above the pair of rotary cutting and slitting mechanisms, a sealing mechanism 3 is arranged. The sealing mechanism 3 is used to seal the plastic packaging film 2 passing through its interior and form a packaging bag 51. During the working process of the automatic peanut product packaging machine of the present invention, it includes power transmission, feeding of peanut products, plastic packaging film conveying and pretreatment, plastic film sealing and forming into a packaging bag, peanut product material filling, transverse heat sealing to complete the sealing of the upper and lower ends, cutting of the tear slits at the sides and in the middle, and discharging processes. Specifically: The power transmission member in the machine case 1 drives the vertical shaft 57 of the vertical linkage mechanism to rotate. The vertical shaft 57 meshes with the large gear 5 through the small gear 4, driving the feeding unit (vibrating disk 6) to rotate, providing power for feeding. The storage circular cavity 7 of the vibrating disk 6 stores peanut products. When rotating, the materials fall into the guide pipe joint 10 of the support seat 9 through the bottom feeding pipe 8 and enter the sealing mechanism 3 after opening the internal valve when needed. Among them, the feeding bin 12 continuously replenishes materials to the storage circular cavity 7 through the replenishing pipe 13 to ensure continuous feeding. Plastic packaging film conveying and pretreatment: The rewinding motor 16 drives the horizontally installed shaft 15 to release the roll of plastic packaging film 2, which successively changes its direction through the first reversing shaft 19, the second reversing shaft 20, and the third reversing shaft 21, and is conveyed downward to the sealing mechanism 3.

[0048] The pre - folding guiding mechanism 22 of the third reversing shaft 21 squeezes the middle part of the plastic packaging film 2 into a V - shaped ridge through the guide wheel group, facilitating subsequent folding and forming. Plastic packaging film sealing and forming: Before the first work, the plastic packaging film 2 is manually fed into the gourd - shaped forming cavity 35 of the through - type die sleeve 34, and the lower end of the plastic packaging film 2 is pulled out to the lower part of the pair of rotary cutting and slitting mechanisms. When the pair of rotary cutting and slitting mechanisms work, they pull the entire plastic packaging film 2 downward. The bottom of the plastic packaging film 2 at the lowest part is pre - sealed by the transverse heat sealer 44 to prevent the leakage of materials in the packaging bag at the bottom.

[0049] The two side edges are folded in half on the left side in the cavity, forming a packaging bag prototype. The negative pressure pump 39 adsorbs and fixes the plastic packaging film 2 on the inner surface of the forming cavity 35 through the adsorption holes 40. The middle film sealer heat - seals the middle part of the plastic packaging film 2 to form a middle heat - sealed vertical seam 52, separating the left and right film spaces; the side film sealer heat - seals the sides to form side heat - sealed vertical seams, and the packaging bag prototype continues to move downward.

[0050] Then, peanut products are filled. The feed pipe joint 10 injects a fixed amount of peanut products into the film spaces on both sides (filling is completed before top sealing). When the loading is finished, after loading, under the action of the rotating cutting and sewing mechanism, the packaging bag is pulled downward in cooperation with the unwinding of the winding motor 16. After moving down to the set length of the packaging bag, the inner positioning cutter 47 and the outer pressing cutter 48 of the horizontal heat sealer 44 clamp the packaging bag, and the horizontal heat sealing head 49 heat seals to form a horizontal sealing seam 54, completing the top and bottom sealing of the packaging bag and forming an independent packaging bag. The sealed packaging bag continues to move downward and is squeezed and cut by the counter-rotating cutting and sewing mechanism's counter-pressure cutting wheel 31 to form an easy-tear seam at the middle and side heat-sealed vertical seams. Finally, the finished packaging bag is output from the front end of the equipment and waits to be collected by manual or automated equipment.

[0051] The power transmission component drives the vertical linkage mechanism to rotate, and drives the feeding unit (vibratory bowl 6) to rotate and feed through gear meshing; the winding motor 16 drives the plastic packaging film 2 to change its direction through the reversing shaft, and the pre-folding guiding mechanism 22 squeezes the plastic packaging film 2 into a V-shaped ridge and then sends it into the sealing mechanism 3; the counter-rotating cutting and sewing mechanism pulls the plastic packaging film 2, the horizontal heat sealer 44 seals the bottom first, and then heat seals through the middle and side film edge sealers to form vertical seams, completing the prototype of the packaging bag; after filling with peanut products, it is horizontally heat-sealed again to form an independent packaging bag, and finally the counter-pressure cutting wheel 31 squeezes and cuts to form an easy-tear seam.

[0052] Through multi-stage reversing shafts and pre-folding mechanisms, the guiding, bending, and pre-treatment of the plastic packaging film are realized, preparing for sealing and forming.

[0053] In addition, a negative pressure adsorption cavity 38 and adsorption holes 40 are used in cooperation to fix the plastic packaging film 2, replacing the traditional mechanical clamping method, avoiding film damage, and improving the positioning accuracy.

[0054] Based on any of the above technical solutions, a further optimization is: at the four corners of the bottom of the chassis 1, universal wheels 50 with self-locking functions are respectively fixedly installed.

[0055] The universal wheels 50 realize the movement of the equipment through the roller structure, and the self-locking function can lock the rollers through the braking components to prevent the equipment from sliding.

[0056] Based on any of the above technical solutions, a further optimization is: the ends of each plastic packaging film 2 are respectively pre-fed into the corresponding internal part of the sealing mechanism 3; The ends of each plastic packaging film 2 respectively form a packaging bag after completing the side, top, and bottom sealing inside their corresponding sealing mechanism 3, and an appropriate amount of peanut products are fed into the inside by the feeding unit above the corresponding sealing mechanism 3 before the top sealing of each packaging bag.

[0057] Manually place the end of the plastic packaging film 2 into the sealing mechanism 3, and complete the three-side sealing in sequence through the heat-sealing process. Fill the material in the state of the top opening, and then complete the top sealing. Step-by-step sealing function: first form a three-side sealed cavity, and then fill the material, which conforms to the packaging process logic and ensures the filling accuracy.

[0058] Based on any of the above technical solutions, a further optimization is: the vertical linkage mechanism includes a vertical and fixed-axis vertical shaft 57, the bottom of the vertical shaft 57 is connected to the corresponding output end of the power transmission member, and a small gear 4 is coaxially fixed to the outer side wall of the upper part of the vertical shaft 57. A large gear 5 is meshed on one side of the small gear 4, and the large gear 5 is coaxially fixedly installed at the lower end of the corresponding feeding unit and is used to drive its rotation.

[0059] The vertical shaft 57 is connected to the power transmission member and rotates. By meshing the small gear 4 with the large gear 5, the power is transmitted to the vibrating disk 6 to drive its rotation for feeding.

[0060] Based on any of the above technical solutions, a further optimization is: the feeding unit includes a vibrating disk 6 installed above the chassis 1. A storage material circular cavity 7 is arranged inside the vibrating disk 6. A plurality of blanking pipes 8 are uniformly spaced along the circumference at the bottom of the storage material circular cavity 7. The bottom of each blanking pipe 8 is movably abutted against the top of the support seat 9 below the vibrating disk 6. Two guide pipe connectors 10 for receiving the granular peanut products falling from each blanking pipe 8 are installed at the front side of the bottom of the support seat 9. Each guide pipe connector 10 is located above the middle of the sealing mechanism 3 and is used for feeding materials into the sealing mechanism 3. The center of the top of the vibrating disk 6 is fixed with a rotating shaft 11. The lower end of the rotating shaft 11 movably passes through the central hole of the support seat 9 and penetrates into the interior of the chassis 1 and is coaxially fixedly connected to the large gear 5. The center bottom of the support seat 9 is fixed to the top of the chassis 1 through a support sleeve 58. An inlet component is installed on one side of the vibrating disk 6, and the inlet component is used for feeding peanut products into the storage material circular cavity 7.

[0061] Based on any of the above technical solutions, a further optimization is: the inlet component includes a feed bin 12 fixed to the rear side of the top of the chassis 1 through a vertical frame. The feed bin 12 is located above the rear side of the storage material circular cavity 7. A replenishing pipe 13 is installed at the top of the feed bin 12 and is matched with the tops of two blanking pipes 8 at corresponding positions. The lower end of the replenishing pipe 13 extends into the interior of the storage material circular cavity 7.

[0062] The vibrating disk 6 rotates to make the peanut products in the storage circular cavity 7 fall into the material guiding pipe joint 10 through the blanking pipe 8, and the feeding bin 12 continuously supplies materials through the replenishing pipe 13. The rotation of the vibrating disk 6 evenly distributes the materials, and the quantitative blanking ensures the feeding accuracy. The vibrating disk 6 is combined with gear transmission to achieve uniform feeding through rotation, replacing the static material storage method. The feeding bin 12 stores the materials to be replenished, and gravity-fed through the replenishing pipe 13 to supplement the peanut products into the storage circular cavity 7 to maintain the storage volume. The large-capacity feeding bin 12 reduces the frequency of manual feeding and improves the production efficiency.

[0063] On the basis of any one of the above technical solutions, a further optimization is that: the plastic packaging film supply mechanism includes a side stand 14 fixed to the upper part of the chassis 1 on one side of the vibrating disk 6. A horizontal mounting shaft 15 is installed at the front end of the side stand 14. One end of the horizontal mounting shaft 15 movably passes out of the outside of the side stand 14 and is connected to a winding motor 16 fixedly installed on the top of the side stand 14. The winding motor 16 is a servo motor. The output end of the winding motor 16 is installed with a bevel gear speed reducer 17. The output end of the bevel gear speed reducer 17 is connected to a belt transmission component 18 installed on the outer side wall of the side stand 14. The output end of the belt transmission component 18 is detachably and fixedly connected to the outer end of the horizontal mounting shaft 15. A roll of plastic packaging film 2 is detachably and fixedly sleeved on the outer side wall of the horizontal mounting shaft 15. A first reversing shaft 19 is arranged at the rear side of the horizontal mounting shaft 15. A second reversing shaft 20 is arranged below the first reversing shaft 19. A third reversing shaft 21 is arranged at the front side of the second reversing shaft 20. The outer ends of the first reversing shaft 19, the second reversing shaft 20, and the third reversing shaft 21 are fixed on the side stand 14 and are all arranged parallel to the horizontal mounting shaft 15.

[0064] The winding motor 16 drives the horizontal mounting shaft 15 to rotate through the bevel gear speed reducer 17 and the belt transmission component 18 to release the plastic packaging film 2. The plastic packaging film 2 changes its direction successively through the first reversing shaft 19, the second reversing shaft 20, and the third reversing shaft 21 and is conveyed downward to the sealing mechanism 3. The servo motor cooperates with the speed reducer and the belt to achieve precise control of the release speed of the plastic packaging film 2 to meet the requirements of different packaging speeds. The multi-stage reversing shafts change the direction of the plastic packaging film 2 to ensure that it smoothly and accurately enters the sealing mechanism 3 and avoid deviation.

[0065] On the basis of any one of the above technical solutions, a further optimization is that: the end of the roll of the plastic packaging film 2 successively bypasses the outer side walls of the first reversing shaft 19, the second reversing shaft 20, and the third reversing shaft 21 and extends downward into the inside of the sealing mechanism 3.

[0066] The plastic packaging film 2 changes its moving direction through the guide wheels of the reversing shaft, changing from horizontal release to vertical downward conveyance, ensuring accurate positioning when entering the sealing mechanism 3. The reversing shaft forms a fixed guiding path, preventing the plastic packaging film 2 from being distorted or offset during conveyance. The vertical conveyance direction matches the vertical forming cavity 35 of the sealing mechanism 3, reducing the conveyance resistance and improving the conveyance efficiency.

[0067] Based on any of the above technical solutions, a further optimization is: a pre-folding guiding mechanism 22 is installed on the outer side wall of the middle part of the third reversing shaft 21. The pre-folding guiding mechanism 22 is used to bend the passing plastic packaging film 2 along the middle part to form a state with a V-shaped cross-section and then continue to convey it into the downstream sealing mechanism 3.

[0068] Based on any of the above technical solutions, a further optimization is: the pre-folding guiding mechanism 22 includes a horizontal installation pipe 23 fixedly sleeved on the outer side wall of the middle part of the third reversing shaft 21. An expansion wheel 24 is arranged on the outer side wall of the middle part of the horizontal installation pipe 23. A plurality of guiding wheel groups are evenly spaced along the circumference on the outer side wall of the edge of the expansion wheel 24; each guiding wheel group includes a horizontally arranged guiding shaft 25. Both ends of each guiding shaft 25 pass through the corresponding through holes at the edge of the expansion wheel 24. Smooth guiding wheels 26 are respectively movably installed on the outer side walls of each guiding shaft 25. Each smooth guiding wheel 26 is located outside the expansion wheel 24 and is used to upwardly abut against the middle part of the passing plastic packaging film 2. When the smooth guiding wheels 26 are in a tightened state, the middle part of the plastic packaging film 2 bulges upward to form a ridge shape.

[0069] When the plastic packaging film 2 passes through the third reversing shaft 21, the smooth guiding wheels 26 of the guiding wheel group upwardly abut against the middle part of the film, causing it to bulge upward to form a V-shaped ridge, which is convenient for subsequent folding and forming. The middle part of the plastic packaging film 2 is bent in advance, reducing the forming resistance in the sealing mechanism 3 and improving the forming efficiency of the packaging bag. The V-shaped ridge structure pre-positions both sides of the film, facilitating accurate alignment during subsequent heat sealing and improving the sealing accuracy.

[0070] Shape pre-treatment function: The plastic packaging film 2 is pre-bent before entering the sealing mechanism 3, reducing the forming difficulty.

[0071] Guiding and positioning function: The movement trajectory of the film is restricted by the guiding wheel group to ensure that the bending position and shape are consistent.

[0072] Based on any of the above technical solutions, a further optimization is as follows: The counter-rotating slitting mechanism includes a counter-rotating motor 27 fixedly installed on the inner wall of the chassis 1. The counter-rotating motor 27 is a servo motor. A transmission belt component 28 is fixedly installed on the motor shaft of the counter-rotating motor 27. The output end of the transmission belt component 28 is fixedly installed on the outer side wall of the inner end of a first shaft 29. A second shaft 30 is arranged in parallel and spaced apart on one side of the first shaft 29. The outer ends of the first shaft 29 and the second shaft 30 both project out of the front side of the chassis 1 and are connected and cooperated with a slitting member. Transmission gears 59 that mesh with each other are respectively fixedly installed on the outer side walls of the ends of the first shaft 29 and the second shaft 30.

[0073] The counter-rotating motor 27 drives the first shaft 29 to rotate through the transmission belt component 28. The first shaft 29 and the second shaft 30 are engaged through the transmission gears 59 to achieve reverse rotation, driving the counter-pressure cutting wheels 31 to rotate relatively, squeezing and cutting the heat-sealed vertical seam of the packaging bag to form a tearable seam.

[0074] In addition, the counter-rotating slitting mechanism can also pull the entire packaging bag downward while slitting, playing a role in providing traction.

[0075] The servo motor precisely controls the rotation speed of the cutting wheels to ensure that the spacing of the tearable seams is uniform, improving the aesthetic appearance of the packaged products.

[0076] The counter-pressure cutting wheels 31 cut by squeezing with the teeth, forming a tearable seam without cutting off the film, which is convenient for users to open the package.

[0077] Using the counter-pressure cutting wheels 31 to replace the traditional blade cutting, forming a tearable seam by extrusion, avoiding material leakage caused by the complete breakage of the film.

[0078] Based on any of the above technical solutions, a further optimization is as follows: The slitting member includes two groups of counter-pressure cutting wheels 31 arranged oppositely. A number of teeth are evenly spaced along the circumference on the surface of each counter-pressure cutting wheel 31. The two counter-pressure cutting wheels 31 are respectively coaxially fixed on the outer side wall of the corresponding first shaft 29 and the outer side wall of the second shaft 30. Extrusion gaps for the middle heat-sealed vertical seam 52 and the edge heat-sealed vertical seam 53 of the sealed packaging bag to pass through are respectively formed between the two groups of counter-pressure cutting wheels 31. When the middle part and the left side part of the formed packaging bag respectively pass downward through their corresponding extrusion gaps, the middle heat-sealed vertical seam 52 and the edge heat-sealed vertical seam 53 will be pressurized and cut respectively, and a number of tearable seams will be formed on their respective surfaces.

[0079] When the packaging bag moves downward with the plastic packaging film 2, the middle and side heat-sealed vertical seams respectively pass through the extrusion gaps of two groups of counter-pressure cutting wheels 31. The teeth of the wheels press and cut the film to form spaced tear-away seams. The tooth structure ensures uniform cutting force and consistent depth of the tear-away seams, avoiding over-cutting or under-cutting. The two groups of cutting wheels process the middle and side vertical seams respectively, realizing multi-site synchronous processing and improving production efficiency. The density and depth of the tear-away seams are controlled by the tooth spacing and extrusion force.

[0080] On the basis of any of the above technical solutions, the further optimization is as follows: The sealing mechanism 3 includes an outer restraint cylinder 33 fixed below two guide pipe joints 10 of the feeding unit. Inside the outer restraint cylinder 33, a through mold sleeve 34 is fixed. The middle parts of the through mold sleeve 34 approach each other and form a molding cavity 35 with a gourd-shaped cross-section and a smooth inner surface. The plastic packaging film 2 enters from the upper part of the molding cavity 35 and exits from the lower part. The two edges of the vertical section of the plastic packaging film 2 located in the molding cavity 35 are folded in half at the left side part of the molding cavity 35. An upper sealing plate 36 and a lower sealing plate 37 are respectively and hermetically fixed at the top and bottom of the through mold sleeve 34. A negative pressure adsorption cavity 38 is formed between the outer restraint cylinder 33 and the through mold sleeve 34. A negative pressure pump 39 is installed at the bottom of the negative pressure adsorption cavity 38. A number of adsorption holes 40 are provided on the surface of the through mold sleeve 34. Middle film edge sealers are symmetrically installed on both sides of the middle part of the negative pressure adsorption cavity 38, and side film edge sealers are symmetrically installed on both sides of the left end of the negative pressure adsorption cavity 38.

[0081] When the sealing mechanism 3 works, the plastic packaging film is introduced and folded: The rolled plastic packaging film 2 is processed by the reversing shaft and the pre-folding guiding mechanism 22 and then enters the gourd-shaped molding cavity 35 inside from the upper opening of the through mold sleeve 34. The cross-section of the molding cavity 35 is gourd-shaped, and the internal space gradually narrows from the inlet to the outlet, guiding the two edges of the plastic packaging film 2 to actively fold to the left side, forming a preliminary contour of the packaging bag (a similar flat tubular structure).

[0082] Negative pressure adsorption to fix the film: After the plastic packaging film 2 enters the molding cavity 35, the negative pressure pump 39 is started, and air is extracted through the evenly distributed adsorption holes 40 on the surface of the through mold sleeve 34 to form a negative pressure environment in the negative pressure adsorption cavity 38. The outer surface of the plastic packaging film 2 is tightly attached to the inner surface of the molding cavity 35 under the action of the adsorption force, ensuring the stable position of the film during the subsequent heat-sealing process and avoiding deviation caused by traction or thermal deformation.

[0083] Zone heat-sealing to form a storage space: Central film edge sealers: Located on both sides of the center of negative pressure adsorption chamber 38, central telescopic cylinder 41 drives heat-sealing heads 42 toward the center of forming chamber 35, squeezing the central and lateral areas of plastic packaging film 2. Heat-sealing heads 42 melt and bond the film at high temperatures, forming a central heat-sealed vertical seam 52, which divides the plastic packaging film 2 into two independent film compartments, one for storing peanut products.

[0084] Edge film sealer: Located on both sides of the left end of the negative pressure adsorption chamber 38, it drives the heat sealing head 42 through the edge telescopic cylinder 43 in a similar way to squeeze the edge docking part of the plastic packaging film 2 to form a vertical heat-sealed seam on the edge, further fixing the shape of the film after folding and strengthening the edge sealing.

[0085] Transverse heat sealing and packaging bag forming: When the plastic packaging film 2, carrying the filled bag prototype, moves down to the set position, the transverse heat sealer 44 is activated. The internal positioning cutter 47 and the external pressure cutter 48 clamp the bag, while the transverse heat sealing head 49 heat-seals the pressurized area to form a transverse sealing seam, completing the sealing of the top and bottom of the bag to make it an independent finished bag.

[0086] It has the following effects: The gourd-shaped forming cavity 35 compulsorily guides the two sides of the plastic packaging film 2 to be precisely folded by geometric shape constraints, ensuring that the packaging bag is symmetrical on both sides and avoiding shape deviation caused by manual intervention or traditional free folding.

[0087] Negative pressure adsorption uses a non-contact fixing method to avoid physical damage to the film (such as indentation and breakage) caused by mechanical clamping. At the same time, the adsorption force is evenly distributed, ensuring that the position error of the film during heat sealing is less than 0.5mm, thereby improving the sealing accuracy.

[0088] The middle and side film edge sealers operate synchronously, and the storage space separation and edge sealing can be completed in one heat seal. Compared with the traditional single-position heat sealing process, the efficiency is increased by more than 50%, and the positioning error caused by multiple movements of the film is reduced.

[0089] The heat-sealed vertical seams and the horizontal sealing seams form a complete sealing structure with high peeling strength, which can effectively prevent leakage of peanut products due to extrusion during transportation.

[0090] Negative pressure adsorption can adapt to plastic packaging films of different materials (such as PE, PP, and aluminized film) and thicknesses. Stable positioning can be achieved by adjusting the negative pressure intensity, and the equipment has strong versatility.

[0091] The sealing mechanism 3 operates in conjunction with the upstream feeding unit, the plastic packaging film feeding mechanism and the downstream slitting mechanism to form a continuous automated production line, reducing downtime and waiting time and improving overall production efficiency.

[0092] The design of heat-sealing the vertical seam first and then filling the material keeps the top of the packaging bag open during filling, facilitating the accurate feeding of the quantitative feeding pipe joint 10 and preventing material spillage.

[0093] The transverse heat sealer 44 cooperates with the subsequent counter-rotating slitting mechanism to form a tearable seam while sealing, allowing consumers to easily open the package without tools.

[0094] Embodiment 2: Compared with Embodiment 1, the difference lies in that it further includes the following technical features: Based on any of the above technical solutions, a further optimization is that when the negative pressure pump 39 is started, the outer surface of the plastic packaging film 2 located in the forming cavity 35 will be tightly adsorbed and fixed on the inner surface of the forming cavity 35 under the suction force of each adsorption hole 40.

[0095] Based on any of the above technical solutions, a further optimization is that the middle film edge sealer includes a fixedly arranged middle telescopic cylinder 41, and the telescopic end of the middle telescopic cylinder 41 extends into the interior of the forming cavity 35 and is fixedly connected to the heat-sealing head 42 at its end; the two heat-sealing heads 42 heat-seal the middle of the plastic packaging film 2 by squeezing both sides of the middle of the plastic packaging film 2 and form a middle heat-sealing vertical seam 52 during the passive falling process of the plastic packaging film 2, and the films on both sides of the middle heat-sealing vertical seam 52 respectively form film spaces for storing peanut products.

[0096] After the negative pressure pump 39 is started, a negative pressure environment is formed in the negative pressure adsorption cavity 38 of the sealing mechanism 3, and suction force is generated through the adsorption holes 40 penetrating the surface of the die sleeve 34. This suction force acts vertically on the outer surface of the plastic packaging film 2 in the forming cavity 35, tightly adsorbing and fitting it on the inner surface of the forming cavity 35, offsetting the traction force, gravity, and thermal stress during heat-sealing of the plastic packaging film 2 during transportation, and ensuring that the film has no displacement during heat-sealing.

[0097] Non-contact negative pressure adsorption avoids physical damage (such as indentation and tearing) to the film caused by traditional mechanical clamping, and at the same time, the adsorption force is evenly distributed on the film surface. In the scenario of high-speed transportation of the plastic packaging film 2 (such as more than 20 meters per minute), negative pressure adsorption can still keep the film stable and avoid positioning failure caused by the lag of mechanical clamping response.

[0098] Working principle of the middle film edge sealer: Power transmission: The telescopic end of the middle telescopic cylinder 41 (pneumatically or electrically driven) drives the heat-sealing head 42 to move towards the center of the forming cavity 35, and the two heat-sealing heads 42 squeeze both sides of the middle of the plastic packaging film 2 towards each other.

[0099] Heat sealing and forming: The heat sealing head 42 is heated to a set temperature by an internal heating element (such as a resistance wire). During the extrusion process, the middle part of the plastic packaging film 2 is melted and bonded to form a middle heat-sealed vertical seam.

[0100] Dynamic linkage: During the passive falling process of the plastic packaging film 2, the heat sealing head 42 continuously acts, enabling the middle heat-sealed vertical seam to be continuously formed as the film moves, and at the same time dividing the film into two independent storage spaces on the left and right.

[0101] Based on any of the above technical solutions, a further optimization is: The edge film sealer includes a fixed edge telescopic cylinder 43. The telescopic end of the edge telescopic cylinder 43 extends into the interior of the forming cavity 35 and is fixedly connected to the heat sealing head 42 at its end; the two heat sealing heads 42 seal the edge film by squeezing both sides of the butt joint part of the edge of the plastic packaging film 2 and form an edge heat-sealed vertical seam during the passive falling process of the plastic packaging film 2.

[0102] The specific working process of the edge film sealer is as follows: Power drive: The telescopic end of the edge telescopic cylinder 43 (driven pneumatically or electrically) extends into the interior of the forming cavity 35, driving the heat sealing head 42 at its end to move. The two heat sealing heads 42 are respectively located on both sides of the butt joint part of the edge of the plastic packaging film 2.

[0103] Extrusion heat sealing: When the plastic packaging film 2 is transported to the specified position, the edge telescopic cylinder 43 pushes the heat sealing heads 42 to squeeze the butt joint part of the edge towards each other. The heat sealing heads 42 are heated to a set temperature by heating elements (such as ceramic heating sheets), causing the edge film to melt and bond.

[0104] Continuous forming: During the passive falling process of the plastic packaging film 2, the heat sealing heads 42 continuously squeeze and move with the film, forming a continuous edge heat-sealed vertical seam, fixing the edge of the plastic packaging film 2 to ensure the stability of the shape of the folded film.

[0105] The synchronous extrusion of the two heat sealing heads 42 (pressure error ≤ ±5%) avoids the film offset that may occur in single-sided heat sealing, ensures the alignment of the edge seal and the middle seal, and improves the overall aesthetics of the packaging bag.

[0106] Fixing the folded shape: The edge heat-sealed vertical seam can fix the folded edge of the plastic packaging film 2, preventing it from rebounding and spreading during material filling or subsequent traction, and ensuring that the packaging bag always maintains the preset flat tubular structure.

[0107] The two guide pipe joints 10 are respectively located directly above the corresponding film space and are used to feed granular peanut products into it.

[0108] Based on any of the above technical solutions, a further optimization is as follows: a transverse heat sealer 44 is installed at the lower part of the outer restraint cylinder 33, and the transverse heat sealer 44 is used to achieve heat sealing along the width direction of the packaging bag.

[0109] Based on any of the above technical solutions, a further optimization is as follows: the transverse heat sealer 44 includes mounting edge seats 45 respectively and fixedly installed on both sides of the lower part of the outer restraint cylinder 33. The two mounting edge seats 45 are arranged oppositely. Transverse telescopic cylinders 46 are symmetrically installed on the opposite side walls of the two mounting edge seats 45 respectively. Inner positioning cutters 47 and outer pressing cutters 48 are installed at the telescopic ends of the two transverse telescopic cylinders 46 respectively. The inner positioning cutter 47 and the outer pressing cutter 48 cooperate to achieve transverse pressing of the packaging bag. A transverse heat sealing head 49 is fixed at the end of the outer pressing cutter 48, and the transverse heat sealing head 49 is used to heat seal the pressed part of the packaging bag and form a transverse sealing seam 54.

[0110] Working process of the transverse heat sealer 44: Positioning and clamping stage: When the plastic packaging film 2 carrying the packaging bag prototype filled with materials moves below the transverse heat sealer 44, the control system triggers the transverse telescopic cylinder 46 to act, pushing the inner positioning cutter 47 and the outer pressing cutter 48 to move towards each other. The groove of the inner positioning cutter 47 catches the two side edges of the packaging bag, and the outer pressing cutter 48 presses the target heat sealing part of the packaging bag through the convex structure. The two cooperate to achieve transverse clamping of the packaging bag, ensuring the accuracy of the heat sealing position.

[0111] Heat sealing and forming stage: While the cutters clamp the packaging bag, the transverse heat sealing head 49 starts to heat up and contacts the plastic packaging film 2 at the pressed part. The film is melted by high temperature (usually 180 - 220 °C), and at the same time, the outer pressing cutter 48 continuously applies pressure (0.2 - 0.5 MPa) to bond the two layers of film to form a transverse sealing seam 54. The heat sealing process lasts for 0.3 - 0.8 seconds to ensure that the sealing seam is completely cured.

[0112] Resetting and separating stage: After heat sealing is completed, the transverse telescopic cylinder 46 drives the cutters to reset, and the packaging bag continues to move downward with the plastic packaging film 2 and enters the rotary cutting seam mechanism for tear - easy seam processing. At this time, the transverse sealing seam has sealed the top and bottom of the packaging bag, forming an independent individual.

[0113] Based on any of the above technical solutions, a further optimization is as follows: The power transmission member includes a main drive motor 55 fixed to the bottom of the inner cavity of the chassis 1. On both sides of the front end of the main drive motor 55, main speed reducers 56 are respectively and fixedly installed. The main speed reducers 56 adopt a bevel gear speed reducer structure. The output ends of the main speed reducers 56 are respectively fixedly connected to the bottoms of the corresponding vertical shafts 57 above. Power belt transmission components 32 are respectively connected to the power input ends of the main speed reducers 56. The pulleys at the input ends of the power belt transmission components 32 are all installed on the motor shaft of the main drive motor 55. When the drive motor 55 operates, it drives the corresponding power belt transmission component 32 to operate. The corresponding main speed reducer 56 is driven to operate through the power belt transmission component 32. When the main speed reducer 56 operates, it drives the corresponding vertical shaft 57 to rotate.

[0114] The specific working process of the present invention is as follows: 1. Power transmission and feeding preparation: Power transmission: The power transmission member (such as a motor) in the chassis 1 drives the vertical shaft 57 of the vertical linkage mechanism to rotate. Through the small gear 4 meshing with the large gear 5, the power is transmitted to the vibrating disk 6 of the feeding unit, making it rotate at a low speed.

[0115] Material supply: The storage circular cavity 7 in the vibrating disk 6 stores peanut products. When rotating, the materials fall into the guide pipe joint 10 of the support base 9 through the bottom blanking pipe 8; the feeding bin 12 continuously supplies materials to the storage circular cavity 7 through the replenishing pipe 13 to ensure continuous feeding.

[0116] 2. Plastic packaging film conveying and pre - treatment: Film release: The winding motor 16 drives the horizontally installed shaft 15 to release the rolled plastic packaging film 2. The film successively changes its direction through the first reversing shaft 19, the second reversing shaft 20, and the third reversing shaft 21, and is vertically conveyed downward to the sealing mechanism 3.

[0117] Pre - folding and forming: The pre - folding guiding mechanism 22 of the third reversing shaft 21 squeezes the middle part of the plastic packaging film 2 into a V - shaped ridge through the guide wheel group, which is convenient for subsequent folding and forming in the sealing mechanism 3.

[0118] 3. Plastic packaging film sealing and forming the prototype of the packaging bag: Import and positioning: Manually send the end of the plastic packaging film 2 into the through - hole die sleeve 34 (gourd - shaped forming cavity 35) of the sealing mechanism 3. The rotary cutting and sewing mechanism pulls the plastic packaging film 2 downward. The transverse heat sealer 44 first heat - seals the bottommost film to seal the bottom and prevent leakage.

[0119] Negative pressure adsorption and heat sealing: The plastic packaging film 2 is folded in half on the left side within the forming cavity 35. The negative pressure pump 39 adsorbs and fixes the film on the inner surface of the forming cavity 35 through the adsorption holes 40. The middle film edge sealer and the edge film edge sealer heat seal the middle and the edges of the plastic packaging film 2 respectively, forming middle and edge heat-sealed vertical seams to separate the left and right material storage spaces.

[0120] 4. Peanut product filling and independent packaging forming: Quantitative filling: The feed pipe joint 10 injects a quantitative amount of peanut products into the two side material storage spaces (filling is completed before sealing the top).

[0121] Horizontal heat sealing and cutting: After filling, the rotary cutting seam mechanism continues to pull the film down to a set length. The horizontal heat sealer 44 clamps the packaging bag and heat seals the top and bottom to form independent packaging bags. Subsequently, the pressure cutting wheel 31 squeezes and cuts at the heat-sealed vertical seam to form a tearable seam, and the finished products are output.

[0122] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention; for those skilled in the technical field of the present invention, any alternative improvements or transformations made to the embodiments of the present invention fall within the protection scope of the present invention.

[0123] Where the present invention is not described in detail, it is common knowledge for those skilled in the technical field.

Claims

1. An automatic packaging machine for peanut products with a sealing mechanism, including a machine case, and a power transmission member is installed in the installation cavity of the machine case, characterized in that: The two output ends of the power transmission member are respectively connected with vertical linkage mechanisms. On the inner wall of the chassis at the front ends of the vertical linkage mechanisms, opposite turning and slitting mechanisms are respectively installed. The upper ends of the two vertical linkage mechanisms are respectively connected with a feeding unit at a corresponding position above the chassis. Above each feeding unit, a plastic film supply mechanism is respectively installed. On both plastic film supply mechanisms, a roll of plastic packaging film is installed. Above the opposite turning and slitting mechanism, a sealing mechanism is arranged. The sealing mechanism is used to seal the plastic packaging film passing through its interior and form a packaging bag.

2. The automatic peanut product packaging machine according to claim 1, wherein: The ends of the plastic packaging films are respectively pre-fed into the interior of the corresponding sealing mechanism. The ends of the plastic packaging films respectively form packaging bags after the side, top and bottom sealing are completed inside their corresponding sealing mechanisms. Before the top sealing of each packaging bag, an appropriate amount of peanut products are fed into the interior by the feeding unit above the corresponding sealing mechanism.

3. The automatic peanut product packaging machine according to claim 2, characterized in that: The vertical linkage mechanism includes a vertical shaft arranged with a fixed axis. The bottom of the vertical shaft is connected with the corresponding output end of the power transmission member. On the outer wall of the upper part of the vertical shaft, a small gear is coaxially fixed. On one side of the small gear, a large gear is engaged. The large gear is coaxially and fixedly installed at the lower end of the corresponding feeding unit and is used to drive it to rotate.

4. The automatic peanut product packaging machine according to claim 3, characterized in that: The feeding unit includes a vibrating disk installed above the chassis. Inside the vibrating disk, a storage circular cavity is arranged. Along the circumference of the bottom of the storage circular cavity, a plurality of blanking pipes are evenly spaced. The bottom of each blanking pipe is movably abutted against the top of a support seat below the vibrating disk. At the front side of the bottom of the support seat, two guide pipe joints are respectively installed for receiving the granular peanut products falling from each blanking pipe. Each guide pipe joint is located above the middle of the sealing mechanism and is used to supply materials to the interior of the sealing mechanism. The center of the top of the vibrating disk is fixed with a rotating shaft. The lower end of the rotating shaft movably passes through the central hole of the support seat and penetrates into the interior of the chassis and is coaxially fixed with the large gear. The center bottom of the support seat is fixed on the top of the chassis through a support sleeve. An inlet component is installed on one side of the vibrating disk. The inlet component is used to supply peanut products into the storage circular cavity.

5. The automatic peanut product packaging machine according to claim 4, characterized in that: The plastic film supply mechanism includes a side stand fixed to the upper part of the chassis on one side of the vibrating disk. A horizontal mounting shaft is installed at the front end of the side stand. One end of the horizontal mounting shaft extends out of the side stand movably and is connected to a winding motor fixedly installed on the top of the side stand. The winding motor is a servo motor. A bevel gear reducer is installed at the output end of the winding motor. The output end of the bevel gear reducer is connected to a belt transmission component installed on the outer side wall of the side stand. The output end of the belt transmission component is detachably and fixedly connected to the outer end of the horizontal mounting shaft. A rolled plastic packaging film is detachably and fixedly sleeved on the outer side wall of the horizontal mounting shaft. A first reversing shaft is arranged at the rear side of the horizontal mounting shaft. A second reversing shaft is arranged below the first reversing shaft. A third reversing shaft is arranged at the front side of the second reversing shaft. The outer ends of the first reversing shaft, the second reversing shaft, and the third reversing shaft are fixed on the side stand and are all arranged parallel to the horizontal mounting shaft.

6. The automatic peanut product packaging machine according to claim 5, characterized in that: The end of the rolled plastic packaging film sequentially bypasses the outer side walls of the first reversing shaft, the second reversing shaft, and the third reversing shaft and extends downward into the interior of the sealing mechanism.

7. The automatic peanut product packaging machine according to claim 6, characterized in that: A pre-folding guiding mechanism is installed on the outer side wall of the middle part of the third reversing shaft. The pre-folding guiding mechanism is used to bend the passing plastic packaging film along the middle to form a state with a V-shaped cross-section and then continue to convey it downward into the interior of the downstream sealing mechanism.

8. The automatic peanut product packaging machine according to claim 7, characterized in that: The opposite-rotating slitting mechanism includes an opposite-rotating motor fixedly installed on the inner wall of the chassis. The opposite-rotating motor is a servo motor. A transmission belt component is fixedly installed on the motor shaft of the opposite-rotating motor. The output end of the transmission belt component is fixedly installed on the outer side wall of the inner end of a first shaft. A second shaft is arranged in parallel and at intervals on one side of the first shaft. The outer ends of the first shaft and the second shaft both extend out of the front side of the chassis and are connected and cooperated with a slitting part. Driving gears that mesh with each other are respectively fixedly installed on the outer side walls of the ends of the first shaft and the second shaft.

9. The automatic peanut product packaging machine according to claim 8, wherein: The sealing mechanism includes an outer restraint cylinder fixed below the two guide pipe joints of the feeding unit. A through mold sleeve is fixed inside the outer restraint cylinder. The middle parts of the through mold sleeve approach each other to form a molding cavity with a gourd-shaped cross-section and a smooth inner surface. The plastic film enters from the upper part of the molding cavity and exits from the lower part. The two edges of the vertical section of the plastic film located inside the molding cavity are folded in half at the left side part of the molding cavity. An upper sealing plate and a lower sealing plate are respectively sealed and fixed on the top and bottom of the through mold sleeve. A negative pressure adsorption cavity is formed between the outer restraint cylinder and the through mold sleeve. A negative pressure pump is installed at the bottom of the negative pressure adsorption cavity. A number of adsorption holes are provided on the surface of the through mold sleeve. Middle film edge sealers are symmetrically installed on both sides of the middle part of the negative pressure adsorption cavity. Edge film edge sealers are symmetrically installed on both sides of the left end of the negative pressure adsorption cavity.

10. The automatic peanut product packaging machine according to claim 9, characterized in that: A transverse heat sealer is installed at the lower part of the outer restraint cylinder. The transverse heat sealer is used to perform heat sealing on the packaging bag along the width direction.

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