A packaging machine for food processing

Abstract

The application discloses a packaging machine for food processing, which comprises feeding mechanism, bagging heat sealing mechanism and sub-packaging heat sealing mechanism arranged in sequence along the processing direction. The feeding mechanism comprises two feeding rollers arranged one above the other, and a packaging film capable of being conveyed to the bagging heat sealing mechanism is arranged around each feeding roller. The bagging heat sealing mechanism comprises a conveying belt assembly and a heat sealing roller matched above the conveying belt assembly. The packaging film passes through the gap between the conveying belt assembly and the heat sealing roller, and two heat sealing rings matched with the two side edges of the packaging film are symmetrically arranged on the heat sealing roller. The sub-packaging heat sealing mechanism comprises a sub-packaging hopper, a rotating frame and a moving frame matched with each other, and the rotating frame and the moving frame are arranged below the sub-packaging hopper respectively. The packaging machine for food processing can integrally realize automatic packaging of packaging bags and automatic bagging of food, and the whole process does not need manual participation, thereby effectively improving the production efficiency and sanitary quality of food processing packaging.

Description

Technical Field

[0001] This invention relates to a packaging machine for food processing. Background Technology

[0002] During the trial production and evaluation phases, as well as after temporary storage or processing during the production process, food often needs to be packaged to prevent contamination during sampling, temporary storage, transportation, and sale. Currently, food packaging typically involves manually placing the processed food into bags, which are then transported via conveyor belt to heating equipment where the bags are heat-sealed. However, this manual bagging process suffers from low efficiency and poor hygiene, and it is also difficult to uniformly control the amount of food loaded into bags of different sizes. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a food processing packaging machine that can automatically seal packaging bags and automatically bag food in one integrated process without human intervention, thereby effectively improving the production efficiency and hygiene quality of food processing and packaging.

[0004] The technical solution to achieve the above objective is: a food processing packaging machine, comprising a feeding mechanism (100), a bagging heat-sealing mechanism (200), and a dispensing heat-sealing mechanism (300) arranged sequentially along the processing direction, wherein:

[0005] The feeding mechanism (100) includes two feeding rollers (101) arranged one above the other, and each feeding roller (101) is wound with a packaging film (102) that can be fed to the bagging heat sealing mechanism (200);

[0006] The bagging heat sealing mechanism (200) includes a conveyor belt assembly (210) and a heat sealing roller (220) that cooperates with the conveyor belt assembly (210). The packaging film (102) passes through the gap between the conveyor belt assembly (210) and the heat sealing roller (220), and the heat sealing roller (220) is symmetrically provided with two heat sealing rings that cooperate with the two side edges of the packaging film (102).

[0007] The dispensing heat sealing mechanism (300) includes a dispensing hopper (310), a rotating frame (320), and a moving frame (330) that cooperate with each other. The rotating frame (320) and the moving frame (330) are respectively located below the dispensing hopper (310), and the free ends of the rotating frame (320) and the moving frame (330) are each equipped with a negative suction plate (340) and a first heat sealing plate (350).

[0008] An intermittent transmission mechanism is connected between the conveyor belt assembly (210) and the dispensing hopper (310).

[0009] The above-mentioned food processing packaging machine includes a conveyor belt assembly (210) comprising a front roller, a rear roller, and a conveyor belt sleeved on the outside of the front roller and the rear roller, wherein the heat sealing roller (220) is positioned directly above the front roller.

[0010] The above-mentioned food processing packaging machine includes an intermittent transmission mechanism comprising an intermittent drive device (230) cooperating with a conveyor belt assembly (210), a dispensing roller (311) cooperating with the dispensing hopper (310), and a synchronous conveying device that drives the intermittent drive device (230) and the dispensing roller (311).

[0011] The aforementioned food processing packaging machine, wherein the intermittent drive device (230) comprises:

[0012] A toothed belt (231) is sleeved on the outside of the front roller and the rear roller, and the toothed belt (231) is located parallel to one side of the conveyor belt;

[0013] A guide rail (232) is arranged parallel above the toothed belt (231), and a movable frame (233) is horizontally slidably connected on the guide rail (232);

[0014] A gear frame (234) is longitudinally slidably connected to the movable frame (233). The gear frame (234) is provided with an upper gear plate and a lower gear plate. When the gear frame (234) is at its highest position, the lower gear plate engages with the toothed belt (231). When the gear frame (234) is at its lowest position, the upper gear plate engages with the toothed belt (231).

[0015] In the above-mentioned food processing packaging machine, a truss (235) is fixed on one side of the toothed frame (234) above the conveyor belt. The truss (235) is perpendicular to the feeding direction of the conveyor belt, and a slitting blade (236) and a second heat sealing plate (237) are connected in parallel at the bottom of the truss (235) through a mounting base. The slitting blade (236) is fixedly connected to the mounting base, the second heat sealing plate (237) is slidably connected to the mounting base, and an elastic telescopic rod (238) is also connected between the second heat sealing plate (237) and the mounting base.

[0016] In the above-mentioned food processing packaging machine, the movable frame (233) is provided with a quadrilateral toothed frame (2331) that can slide longitudinally with damping. A rotatable drive toothed shaft (2332) is meshed and penetrated in the quadrilateral toothed frame (2331), and the top of the tooth frame (234) is slidably connected to the bottom of the quadrilateral toothed frame (2331).

[0017] In the above-mentioned food processing packaging machine, the movable frame (233) is provided with a rotatable lead screw (2333), the lead screw (2333) has two threaded parts with opposite thread directions, and a horizontal sliding plate (2334) is screwed onto each of the two threaded parts; the quadrilateral toothed frame (2331) includes two symmetrically fitted open half-frames, and the ends of the two open half-frames that are far apart from each other are respectively longitudinally damped and slidably connected to the two horizontal sliding plates (2334).

[0018] In the above-mentioned food processing packaging machine, the dispensing roller (311) is rotatably installed inside the dispensing hopper (310), and a plurality of dispensing guide grooves are provided on the surface wall of the dispensing roller (311).

[0019] In the above-mentioned food processing packaging machine, the synchronous conveying device includes a synchronous wheel (2321) rotatably mounted on the guide rail (232), and a synchronous belt assembly (2322) is connected between the synchronous wheel (2321) and the dispensing roller (311).

[0020] In the aforementioned food processing packaging machine, the synchronous conveying device further includes a threaded pull rod (2323) and a worm gear (2324) coaxially damped and rotatably mounted in the guide rail (232). One end of the threaded pull rod (2323) is coaxially fixed with an inner column (2326), and one end of the worm gear (2324) is coaxially fixed with an outer sleeve (2327). The outer sleeve (2327) is sleeved outside the inner column (2326), and a rotatable one-way ratchet is provided between the outer sleeve (2327) and the inner column (2326). A sliding sleeve (2325) that helically engages with the threaded pull rod (2323) is fixed on the moving frame (233). The synchronous wheel is a turbine, and the turbine meshes with the worm gear (2324).

[0021] The food processing packaging machine of the present invention has the following beneficial effects:

[0022] (1) It can realize the automatic sealing of packaging bags and the automatic bagging of food in one integrated process. The whole process does not require manual intervention, thereby effectively improving the production efficiency and hygiene quality of food processing and packaging.

[0023] (2) During the automatic sealing process of the packaging bag, the packaging film is automatically fed between the conveyor belt assembly and the heat sealing roller through the cooperation of the moving frame, tooth frame and tooth belt and other structures. The heat sealing roller is symmetrically provided with two heat sealing rings that cooperate with the two sides of the packaging film respectively. In addition, a cutting knife and a second heat sealing plate are provided on one side of the tooth frame, so as to automatically complete the three-sided heat sealing of the packaging bag and the cutting after heat sealing.

[0024] (3) A quadrilateral toothed frame that can slide longitudinally is set inside the moving frame, and a drive toothed shaft that is driven to rotate by a motor is meshed inside the quadrilateral toothed frame, so as to effectively realize the reciprocating movement of the moving frame, and the transmission direction of the toothed belt is effectively limited by the up and down sliding of the quadrilateral toothed frame and the toothed frame during the reciprocating movement.

[0025] (4) The quadrilateral toothed frame is set as a split structure, and the horizontal length of the quadrilateral toothed frame can be effectively changed by the symmetrical movement of the two horizontal sliding plates inside the frame, thereby changing the packaging and cutting length of the packaging bag to suit the packaging of food with different filling quantities.

[0026] (5) The packaging bag is picked up by the rotating frame after sealing and cutting, the opening of the packaging bag is opened by the moving frame, and food is put into the packaging bag by the dispensing hopper. The dispensing roller that can be linked with the moving frame is installed in the dispensing hopper. Thus, on the one hand, the dispensing process of the dispensing hopper can be accurately adapted to the sealing and cutting process of the packaging bag, and on the other hand, the amount of food dispensed can be automatically and adaptively adjusted according to the different cutting lengths of the packaging bag. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of the food processing packaging machine of the present invention;

[0028] Figure 2 This is a schematic diagram of the bag-sealing mechanism in this invention;

[0029] Figure 3 This is a schematic diagram of the intermittent drive device in this invention;

[0030] Figure 4 This is a schematic diagram of the intermittent driving device in this invention (moving frame moves);

[0031] Figure 5 This is a schematic diagram of the structure of the conveyor belt assembly and the toothed belt assembly in this invention;

[0032] Figure 6 This is a schematic diagram of the assembly of the guide rail, the moving frame, and the gear frame in this invention;

[0033] Figure 7 This is a schematic diagram of the internal structure of the movable frame in this invention;

[0034] Figure 8 for Figure 7 Enlarged view of point A in the image;

[0035] Figure 9 This is a longitudinal sectional view of the movable frame in this invention;

[0036] Figure 10 This is a vertical sectional view of the movable frame in this invention;

[0037] Figure 11 This is a schematic diagram of the dispensing and heat-sealing mechanism in this invention;

[0038] Figure 12 This is a schematic diagram of the structure of the movable frame in this invention;

[0039] Figure 13 This is a cross-sectional view of the assembly of the guide rail and the dispensing hopper in this invention;

[0040] Figure 14 for Figure 13 Enlarged view of point B in the image;

[0041] Figure 15 for Figure 13 Enlarged view of point C in the image;

[0042] Figure 16 for Figure 13 Enlarged view of point D in the image;

[0043] Figure 17 This is a schematic diagram of the assembly of the threaded tie rod and the worm gear in this invention;

[0044] Figure 18 This is a simplified diagram illustrating the principle of the drive gear shaft cooperating with the quadrilateral gear frame in this invention.

[0045] In the figure: feeding mechanism 100; feeding roller 101; packaging film 102; bagging heat sealing mechanism 200; conveyor belt assembly 210; heat sealing roller 220; intermittent drive device 230; toothed belt 231; guide rail 232; synchronous pulley 2321; synchronous belt assembly 2322; threaded tie rod 2323; worm gear 2324; sliding sleeve 2325; inner column 2326; outer sleeve 2327; moving frame 233; quadrilateral toothed frame 2331; drive gear shaft 2332; lead screw 2333; horizontal slide plate 2334; gear frame 234; truss 235; slitting knife 236; second heat sealing plate 237; dispensing heat sealing mechanism 300; dispensing hopper 310; dispensing roller 311; rotating frame 320; moving frame 330; negative suction plate 340; first heat sealing plate 350. Detailed Implementation

[0046] To enable those skilled in the art to better understand the technical solution of the present invention, its specific embodiments are described in detail below with reference to the accompanying drawings:

[0047] Example 1

[0048] Please see Figures 1 to 18 According to Embodiment 1 of the present invention, a food processing packaging machine includes a feeding mechanism 100, a bag forming heat sealing mechanism 200, and a dispensing heat sealing mechanism 300 arranged sequentially along the processing direction.

[0049] Please see again Figure 1 The feeding mechanism 100 includes two feeding rollers 101 arranged one above the other, and each feeding roller 101 is wound with a packaging film 102 that can be conveyed to the bag forming heat sealing mechanism 200. The packaging film 102 is heat sealed by the food processing packaging machine of the present invention to form a packaging bag for packaging food, and the packaging bag is specifically heat sealed on all four sides.

[0050] Please see again Figure 2 The bag-forming heat-sealing mechanism 200 includes a conveyor belt assembly 210 and a heat-sealing roller 220 that cooperates above the conveyor belt assembly 210. See also... Figure 5 The conveyor belt assembly 210 includes a front roller, a rear roller, and a conveyor belt sleeved on the outside of the front roller and the rear roller. The heat sealing roller 220 is positioned directly above the front roller. The packaging film 102 released by the feed roller 101 is fed through the gap between the front roller and the heat sealing roller 220. Preferably, two heat sealing rings are symmetrically provided on the heat sealing roller 220 to cooperate with the two sides of the packaging film 102, thereby ensuring that the two layers of packaging film 102 can be automatically heat-sealed at both sides while being fed into the bagging heat sealing mechanism 200.

[0051] Please see again Figure 2 The conveyor belt assembly 210 is also equipped with an intermittent drive device 230 to enable automatic feeding of the packaging film 102 into the bagging and heat-sealing mechanism 200.

[0052] Please see again Figure 3 and Figure 4 The intermittent drive device 230 provided in this embodiment includes a toothed belt 231, a guide rail 232, a moving frame 233, and a toothed frame 234.

[0053] Please see again Figure 5 The toothed belt 231 is sleeved on the outside of the front roller and the rear roller and is parallel to one side of the conveyor belt, thereby enabling the synchronous conveying of the toothed belt 231 and the conveyor belt. The packaging film 102 is attached to the surface of the conveyor belt after passing through the gap between the front roller and the heat sealing roller 220.

[0054] Please see again Figure 3 and Figure 4 The guide rail 232 is arranged parallel above the toothed belt 231, and the moving frame 233 slides on the guide rail 232 to limit the reciprocating movement direction of the moving frame 233.

[0055] Please see again Figure 7 The movable frame 233 is provided with a quadrilateral toothed frame 2331 that can slide longitudinally with damping, and a rotatable drive gear shaft 2332 (connected to the drive motor) meshes and passes through the quadrilateral toothed frame 2331.

[0056] Please see again Figure 7and Figure 10 The top of the gear frame 234 is connected to the bottom of the quadrilateral gear frame 2331, and a guide post that can slide longitudinally through the moving frame 233 is also provided inside the gear frame 234, so that the gear frame 234 can slide longitudinally relative to the moving frame 233. An upper gear plate and a lower gear plate (both located below the guide post) are also provided on the gear frame 234 to ensure the meshing between the gear frame 234 and the gear belt 231 according to the different longitudinal sliding positions of the gear frame 234.

[0057] Regarding the aforementioned intermittent drive device 230, in conjunction with Figure 18 The principle shown indicates that:

[0058] Figure 18 The dashed quadrilateral frame represents the quadrilateral gear frame 2331, and the solid circle represents the drive gear shaft 2332. The drive gear shaft 2332 rotates only under the drive of the motor (without moving in any direction). Specifically, during the clockwise rotation of the drive gear shaft 2332:

[0059] (1) When the drive gear shaft 2332 meshes with side a of the quadrilateral gear frame 2331 (see Figure 3 The clockwise rotation of the drive gear shaft 2332 will cause the entire quadrilateral gear frame 2331 to move to the left, at which time the moving frame 233 will move to the left synchronously with the quadrilateral gear frame 2331. Combined with... Figure 3 As shown, when the drive gear shaft 2332 is engaged with side a, the overall quadrilateral gear frame 2331 slides to its highest damping state (to prevent the quadrilateral gear frame 2331 from automatically falling and separating from the drive gear shaft 2332 in this state, the damping sliding friction of the quadrilateral gear frame 2331 should be limited to be greater than the weight of the overall structure). The corresponding quadrilateral gear frame 2331 then drives the gear frame 234 to rise to its highest position, and the lower tooth plate on the gear frame 234 engages with the toothed belt 231. Thus, when the overall moving frame 233 and the quadrilateral gear frame 2331 move to the left, the gear frame 234 drives the toothed belt 231 to perform clockwise transmission, which in turn drives the overall conveyor belt assembly 210 to perform clockwise transmission (in order to cooperate with the heat sealing roller 220 to perform the feeding of the packaging film 102).

[0060] (2) When the quadrilateral tooth frame 2331 moves to the left until the drive tooth shaft 2332 meshes with side b, the drive tooth shaft 2332 continues to rotate clockwise. At this time, the quadrilateral tooth frame 2331 can be driven to move downward through the meshing action of the quadrilateral tooth frame 2331 and the drive tooth shaft 2332 (the quadrilateral tooth frame 2331 moves downward with damping inside the moving frame 233, while the moving frame 233 remains stationary at the current position). At the same time, the quadrilateral tooth frame 2331 also drives the tooth frame 234 to move downward.

[0061] (3) When the quadrilateral gear frame 2331 moves down to mesh with the drive gear shaft 2332 on side c, the gear carrier 234 moves down from its highest point to its lowest point, causing the upper gear plate on the gear carrier 234 to mesh with the gear belt 231, thus engaging... Figure 4 As shown, in this state, if the drive gear shaft 2332 continues to rotate clockwise, it will drive the entire quadrilateral gear frame 2331 to move to the right. The moving frame 233 and the gear frame 234 will move to the right synchronously with the quadrilateral gear frame 2331, thereby driving the gear belt 231 and the entire conveyor belt assembly 210 to continue to perform clockwise transmission.

[0062] (4) When the quadrilateral gear frame 2331 moves to the right until the drive gear shaft 2332 meshes with the d side, the clockwise rotation of the drive gear shaft 2332 can drive the quadrilateral gear frame 2331 to move upward until it returns to its original position. Figure 3 The drive gear shaft 2332 shown is engaged with side a.

[0063] In summary, based on the meshing drive between the drive gear shaft 2332 and the quadrilateral gear frame 2331, and the longitudinal damping sliding of the quadrilateral gear frame 2331 within the moving frame 233, the gear frame 234 can cyclically perform operations such as leftward movement, downward movement, rightward movement, and upward movement. This correspondingly causes the toothed belt 231 and the overall conveyor belt assembly 210 to cyclically perform operations such as clockwise transmission, pause, clockwise transmission, and pause, thereby effectively executing the intermittent transmission of the packaging film 102 in the bag-forming heat-sealing mechanism 200. Based on this, as... Figure 3 , Figure 4 and Figure 6 As shown, two sets of intermittent drive devices 230 are symmetrically arranged on both sides of the conveyor belt assembly 210, and a truss 235 located above the conveyor belt is fixed between the two toothed frames 234, so that the truss 235 is perpendicular to the feeding direction of the conveyor belt.

[0064] Please see again Figure 7 and Figure 8At the bottom of the truss 235, a slitting blade 236 and a second heat-sealing plate 237 are connected in parallel via a mounting base. The slitting blade 236 is fixedly connected to the mounting base, and the second heat-sealing plate 237 is slidably connected to the mounting base. An elastic telescopic rod 238 is also connected between the second heat-sealing plate 237 and the mounting base (the damping friction of the quadrilateral toothed frame 2331 is also greater than the maximum elastic force of the elastic telescopic rod 238). Based on this, when the drive gear shaft 2332 meshes with the c-side of the quadrilateral toothed frame 2331, the toothed frame 234 moves down to its lowest point, thereby also causing the truss 235 to move down, and causing the second heat-sealing plate 237 and the slitting blade 236 to press against the upper surface of the conveyor belt. Specifically, during the downward movement of the truss 235, the second heat-sealing plate 237, constrained by the elastic telescopic rod 238, first contacts the packaging film 102 on the conveyor belt surface. As the truss 235 continues to move downward, the elastic telescopic rod 238 is gradually compressed, and the second heat-sealing plate 237 gradually presses the packaging film 102, thereby achieving heat sealing on the third side of the packaging film 102. In addition, as the elastic telescopic rod 238 continues to shorten, the slitting blade 236 on one side of the second heat-sealing plate 237 also gradually presses the heat-sealed packaging film 102, thus completing the slitting of the packaging film 102 (bag) while heat-sealing. Furthermore, when the drive gear shaft 2332 meshes with the (quadrilateral gear frame 2331) a side, the gear frame 234 moves to its highest point, and the truss 235 also rises accordingly, ensuring that the slitting blade 236 and the second heat-sealing plate 237 are disengaged from the upper surface of the conveyor belt, thereby avoiding interference with the feeding of the packaging film 102.

[0065] Please see again Figure 11 The dispensing and heat-sealing mechanism 300 includes a dispensing hopper 310, a rotating frame 320, and a movable frame 330 that cooperate with each other. The rotating frame 320 and the movable frame 330 are both located below the dispensing hopper 310. Please refer to [link to relevant documentation]. Figure 12 Both the rotating frame 320 and the moving frame 330 are equipped with a negative suction plate 340 (including a negative suction generator and a perforated plate) and a first heat sealing plate 350 at their free ends.

[0066] In summary, in this embodiment, the specific steps for performing food packaging include:

[0067] S1, by rotating the drive gear shaft 2332, the drive gear shaft 2332 meshes with the a side of the quadrilateral gear frame 2331. At this time, the lower gear plate on the gear frame 234 meshes with the gear belt 231, the gear frame 234 and the truss 235 are raised to the highest point, the slitting blade 236 and the second heat sealing plate 237 are separated from the upper surface of the conveyor belt, the gear belt 231 and the conveyor belt drive clockwise, and the packaging film 102 passes through the gap between the front roller and the heat sealing roller 220 to realize the feeding of the packaging film 102 and the heat sealing of both sides of the edge;

[0068] S2, by rotating the drive gear shaft 2332, the drive gear shaft 2332 meshes with side b of the quadrilateral gear frame 2331. At this time, the gear carrier 234 and truss 235 move downwards, and the toothed belt 231 and conveyor belt remain at their current positions. This drives the rotating frame 320 to rotate to... Figure 1 The rotating frame 320 is positioned as shown (and can be driven by a motor), and a negative suction plate 340 mounted on the free end of the rotating frame 320 picks up the packaging bag (which has been cut and heat-sealed on three sides) located on the upper surface of the conveyor belt; then the rotating frame 320 is driven to rotate to... Figure 11 As shown, in this position, the unsealed side (cutting port) of the packaging bag can be opened by moving the movable frame 330 (which can be driven by a linear motor or electric push rod) and by the negative suction of the negative suction plate 340 at the free end of the movable frame 330.

[0069] S3, by rotating the drive gear shaft 2332, the drive gear shaft 2332 meshes with the c-side of the quadrilateral gear frame 2331. At this time, the upper toothed plate on the gear frame 234 meshes with the toothed belt 231, and the gear frame 234 and the truss 235 descend to their lowest positions. The slitting blade 236 and the second heat-sealing plate 237 press against the upper surface of the conveyor belt (completing the three-sided heat sealing and slitting of a packaging bag). The toothed belt 231 drives the conveyor belt clockwise, and the slitting blade 236 and the second heat-sealing plate 237 move at the same speed as the conveyor belt. The packaging film 102 continues to pass through the gap between the front roller and the heat-sealing roller 220, realizing the feeding of the packaging film 102 and the heat sealing of both sides. At the same time, the dispensing hopper 310 performs dispensing to put the food to be packaged into the packaging bag between the rotating frame 320 and the moving frame 330.

[0070] S4, by rotating the drive gear shaft 2332, the drive gear shaft 2332 meshes with the d-side of the quadrilateral gear frame 2331. At this time, the gear carrier 234 and the truss 235 move upward, and the toothed belt 231 and the conveyor belt remain at their current positions. Figure 11 In the indicated position, the movable frame 330 is driven to move closer to the rotating frame 320, and the fourth side of the packaging bag is heat-sealed by the movable frame 330 and the first heat-sealing plate 350 on the rotating frame 320, thereby completing the sealing and packaging of the food. After the heat sealing is completed, the rotating frame 320 is driven to return to its original position. Figure 1 At the position shown, the packaged food is also discharged (the negative suction plate 340 stops negative suction).

[0071] By repeating steps S1 to S4, the continuous packaging of food can be quantitatively achieved.

[0072] Example 2

[0073] This embodiment 2 is based on the above embodiment 1. By improving the structure of the dispensing hopper 310, the feeding time of the dispensing hopper 310 is limited to ensure that the dispensing hopper 310 only performs dispensing when executing step S3 described in embodiment 1.

[0074] Please see again Figure 13 A dispensing roller 311 is rotatably installed inside the dispensing hopper 310, and the rotating shaft of the dispensing roller 311 extends to the outside of the dispensing hopper 310. Furthermore, a synchronous conveying device is also connected between the intermittent drive device 230 described in Embodiment 1 and the dispensing roller 311 in this embodiment.

[0075] Continue to refer to Figure 15 As shown, multiple material distribution guide grooves are provided on the surface wall of the material distribution roller 311.

[0076] Continue to refer to Figures 13 to 17 As shown, the synchronous transmission device includes:

[0077] A threaded tie rod 2323 and a worm gear 2324 are coaxially damped and rotatably mounted in the guide rail 232. One end of the threaded tie rod 2323 is coaxially fixed with an inner column 2326, and one end of the worm gear 2324 is coaxially fixed with an outer sleeve 2327. The outer sleeve 2327 is sleeved on the outside of the inner column 2326, and a rotatable one-way ratchet is provided between the outer sleeve 2327 and the inner column 2326. Thus, the inner column 2326, the one-way ratchet, and the outer sleeve 2327 are combined to form an internal friction one-way ratchet mechanism, thereby effectively realizing one-way transmission between the threaded tie rod 2323 and the worm gear 2324.

[0078] A sliding sleeve 2325 is fixed on the movable frame 233, and the sliding sleeve 2325 is screwed to the outside of the threaded tie rod 2323;

[0079] The synchronous pulley 2321 is rotatably mounted on the guide rail 232. The synchronous pulley is a turbine meshing with one side of the worm gear 2324, and the synchronous pulley 2321 is connected to the distribution roller 311 by a synchronous belt assembly 2322.

[0080] In summary, and in conjunction with the principles of packaging bag cutting and food dispensing described in Example 1, it can be concluded that:

[0081] When the drive gear shaft 2332 meshes with side a of the quadrilateral gear frame 2331, the moving frame 233 moves synchronously to the left along with the quadrilateral gear frame 2331. At this time, the sliding sleeve 2325 moves to the left accordingly, driving the threaded tie rod 2323 to move according to... Figure 17 Rotate counterclockwise at the angle shown (at this time, only the threaded rod 2323 and the inner column 2326 rotate, while the outer sleeve 2327 and the worm gear 2324 do not rotate);

[0082] When the drive gear shaft 2332 meshes with side c of the quadrilateral gear frame 2331, the moving frame 233 moves synchronously to the right along with the quadrilateral gear frame 2331. At this time, the sliding sleeve 2325 moves to the right accordingly, driving the threaded tie rod 2323 to move according to... Figure 17The inner column 2326, outer sleeve 2327 and worm gear 2324 rotate clockwise together under the constraint of the one-way ratchet, which in turn drives the synchronous pulley 2321 (turbine) to rotate. The synchronous pulley 2321 then drives the dispensing roller 311 to rotate through the synchronous belt assembly 2322, thereby performing the quantitative feeding of the dispensing hopper 310.

[0083] In summary, the intermittent drive device 230, the material distribution roller 311, and the synchronous conveying device provided in this embodiment 2 are combined to form an intermittent transmission mechanism that connects the conveyor belt assembly 210 and the dispensing hopper 310, thereby effectively realizing the linkage between packaging bag sealing and cutting conveying and food dispensing and sealing.

[0084] Example 3

[0085] This embodiment 3 is based on the above embodiment 2, and improves the specific structure of the intermittent drive device 230 to realize the cutting of packaging bags of different sizes and automatic food packaging.

[0086] Please see again Figure 7 and Figure 9 The movable frame 233 is provided with a rotatable lead screw 2333. The lead screw 2333 has two threaded parts with opposite thread directions, and a horizontal sliding plate 2334 is screwed onto each of the two threaded parts. The quadrilateral toothed frame 2331 includes two symmetrically fitted open half-frames. Both open half-frames are slidably connected to the toothed frame 234, and the ends of the two open half-frames that are far apart from each other are respectively longitudinally damped and slidably connected to the two horizontal sliding plates 2334.

[0087] Based on this, in this embodiment 3, the distance between the two horizontal slide plates 2334 can be adjusted by rotating the lead screw 2333, and the a / c side length of the quadrilateral toothed frame 2331 can be changed accordingly.

[0088] Based on the driving and cutting principle of the intermittent drive device 230 described in Embodiment 1 above, it can be seen that during the meshing of the drive gear shaft 2332 in sequence a / b / c / d, the cutting blade 236 only performs one cutting, and the conveyor belt only performs conveying when the drive gear shaft 2332 is meshed on the a / c side. Therefore, under the drive of the intermittent drive device 230, the length of the cut packaging bag should be equal to the sum of the lengths on the a / c sides. It can be seen that when the length of the a / c side of the quadrilateral toothed frame 2331 is changed based on the movement of the horizontal slide plate 2334, the length of the cut packaging bag also changes accordingly, thereby facilitating flexible cutting to form packaging bags of different sizes.

[0089] Furthermore, based on the description of Embodiment 2, the dispensing hopper 310 performs dispensing only once during the sequential meshing of the drive gear shaft 2332 (a / b / c / d), and the rotation of the dispensing roller 311 is specifically achieved by the rightward movement of the moving frame 233. The rightward movement distance of the moving frame 233 is limited by the length of the c-side of the quadrilateral gear frame 2331, thereby ensuring that the dispensing amount of the dispensing hopper 310 can flexibly adapt to the actual size of the packaging bag formed by the cutting.

[0090] In summary, the food processing packaging machine of the present invention can realize the automatic packaging of packaging bags and the automatic bagging of food in one integrated process without human intervention, thereby effectively improving the production efficiency and hygiene quality of food processing and packaging.

[0091] Those skilled in the art should recognize that the above embodiments are merely illustrative of the present invention and are not intended to limit the present invention. Any variations or modifications to the above embodiments that are within the spirit and essence of the present invention will fall within the scope of the claims of the present invention.

Claims

1. A food packaging machine, characterized in that, It includes a feeding mechanism, a bagging heat-sealing mechanism, and a dispensing heat-sealing mechanism arranged sequentially along the processing direction, wherein: The feeding mechanism includes two feeding rollers arranged one above the other, and each feeding roller is wound with a packaging film that can be fed to the bagging heat sealing mechanism; The bagging heat sealing mechanism includes a conveyor belt assembly and a heat sealing roller that cooperates with the conveyor belt assembly. The packaging film passes through the gap between the conveyor belt assembly and the heat sealing roller, and the heat sealing roller is symmetrically provided with two heat sealing rings that cooperate with the two side edges of the packaging film respectively. The dispensing and heat-sealing mechanism includes a dispensing hopper, a rotating frame, and a moving frame that cooperate with each other. The rotating frame and the moving frame are respectively located below the dispensing hopper, and a negative suction plate and a first heat-sealing plate are installed on the free ends of the rotating frame and the moving frame. An intermittent transmission mechanism is connected between the conveyor belt assembly and the dispensing hopper; The intermittent transmission mechanism includes an intermittent drive device that cooperates with the conveyor belt assembly, a dispensing roller that cooperates with the dispensing hopper, and a synchronous conveying device that drives the intermittent drive device and the dispensing roller. The conveyor belt assembly includes a front roller, a rear roller, and a conveyor belt sleeved on the outside of the front roller and the rear roller. The intermittent drive device includes: a toothed belt sleeved on the outside of the front and rear rollers, with the toothed belt parallel to one side of the conveyor belt; a guide rail parallel to the top of the toothed belt, with a movable frame horizontally slidably connected to the guide rail; and a toothed frame slidably connected longitudinally to the movable frame, the toothed frame having an upper toothed plate and a lower toothed plate, wherein the lower toothed plate meshes with the toothed belt when the toothed frame is at its highest position, and the upper toothed plate meshes with the toothed belt when the toothed frame is at its lowest position. A truss is fixed on one side of the gear frame above the conveyor belt. The truss is perpendicular to the feeding direction of the conveyor belt, and a slitting blade and a second heat sealing plate are connected in parallel at the bottom of the truss via a mounting base. The slitting blade is fixedly connected to the mounting base, the second heat sealing plate is slidably connected to the mounting base, and an elastic telescopic rod is also connected between the second heat sealing plate and the mounting base. The movable frame is provided with a quadrilateral toothed frame that can slide longitudinally with damping. A rotatable drive toothed shaft meshes through the quadrilateral toothed frame, and the top of the toothed frame is slidably connected to the bottom of the quadrilateral toothed frame. The movable frame is provided with a rotatable lead screw, which has two threaded portions with opposite thread directions, and both threaded portions are fitted with horizontal sliding plates; the quadrilateral toothed frame includes two symmetrically fitted open half-frames, and the ends of the two open half-frames that are far apart from each other are respectively longitudinally damped and slidably connected to the two horizontal sliding plates.

2. The food processing packaging machine according to claim 1, characterized in that, The heat-sealing roller is positioned directly above the front roller.

3. The food processing packaging machine according to claim 1, characterized in that, The dispensing roller is rotatably installed inside the dispensing hopper, and multiple dispensing guide grooves are provided on the surface wall of the dispensing roller.

4. A food processing packaging machine according to claim 3, characterized in that, The synchronous conveying device includes a synchronous wheel rotatably mounted on the guide rail, and a synchronous belt assembly is drivingly connected between the synchronous wheel and the distributing roller.

5. A food processing packaging machine according to claim 4, characterized in that, The synchronous transmission device further includes a threaded tie rod and a worm gear coaxially damped and rotatably mounted in the guide rail. One end of the threaded tie rod is coaxially fixed with an inner column, and one end of the worm gear is coaxially fixed with an outer sleeve. The outer sleeve is fitted outside the inner column, and a rotatable one-way ratchet is provided between the outer sleeve and the inner column. A sliding sleeve that helically engages with the threaded tie rod is fixed on the moving frame. The synchronous wheel is a turbine, and the turbine is meshed with the worm gear.

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