A discharging mechanism based on food packaging film processing

Abstract

The invention discloses a discharging mechanism based on food packaging film processing, and relates to the technical field of film processing. The invention comprises a housing, two heat-blocking plates and a rotating barrel; a reciprocating screw is arranged in the rotating barrel, and a moving plate is arranged on the reciprocating screw; a transmission mechanism is fixedly arranged on the side wall of the housing, and the rotating barrel drives the reciprocating screw to move when rotating, and the reciprocating screw drives the plastic particles to gather toward the rotating barrel when moving; the rotating barrel can always prevent heat from being transferred to the plastic particles on the screen while transporting the plastic particles, thereby preventing the plastic particles on the screen from softening and bonding; the rotating barrel and the transmission mechanism drive the moving plate to move, so as to facilitate the scraping of the plastic on the inner wall of the rotating barrel and accelerate the plastic particles to enter the melting mechanism; the hot air in the rotating barrel is squeezed out by the moving plate, and the pushing plate is driven to push the plastic particles toward the rotating barrel, thereby reducing the heat loss of the melting mechanism; the reciprocating screw drives the dredging roller to dredge the mesh of the screen.

Description

Technical Field

[0001] The invention relates to the technical field of film processing, and in particular to a discharging mechanism based on food packaging film processing. Background Art

[0002] Film is a thin, soft, transparent sheet. Made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other polymer plastics, film is widely used. Food packaging film is a polymer material used to wrap the surface of food to isolate the entry of decomposing microorganisms and foreign pollutants, prevent and prolong the deterioration of food. Food packaging film mainly includes photocatalytic inorganic antibacterial film, natural and polymer antibacterial film, composite antibacterial film, inorganic antibacterial film, and organic antibacterial film.

[0003] For example, the invention patent with publication number CN110901112B and name "A plastic film and processing system and processing technology" includes a crushing cylinder, a particle crushing mechanism, a stirring body, a film discharging mechanism, a film rolling mechanism, a telescopic transmission mechanism and a conveyor frame. The crushing cylinder is provided with a trapezoidal slide bar, an inverted cone heating bin, a particle filter plate, a raw material filter plate and an electric heating wire; the plastic particles are crushed by the particle crushing mechanism, and the crushed plastic particles pass through the particle filter plate into the inverted cone heating bin for heating and melting, and then the outflowing plastic is rolled and cooled into shape by the film rolling mechanism.

[0004] When producing thin films, it is necessary to melt plastic particles into liquid at high temperature. As shown in the above-mentioned patent, some existing technologies directly put the crushed plastic particles into the melting mechanism through the particle filter plate, and the crushing mechanism is directly connected to the melting mechanism. When the melting mechanism is working, heat and hot air will directly act on the particle filter plate and the bottom of the plastic particles on the particle filter plate, causing the plastic particles at the bottom of the particle filter plate to soften and stick, or even directly melt and adhere to the particle filter plate, blocking the particle filter plate and affecting the production of thin films. Summary of the invention

[0005] The object of the present invention is to provide a discharging mechanism based on food packaging film processing to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a discharging mechanism based on food packaging film processing, comprising a shell, two heat-resistant plates for isolating heat are fixedly arranged in the shell, and a rotating barrel is rotatably arranged between the two heat-resistant plates; a reciprocating screw, which is rotatably and slidably arranged in the rotating barrel, and a movable plate for cleaning the inner wall of the rotating barrel is rotatably arranged at one end of the reciprocating screw; a transmission mechanism, which is fixedly arranged on the side wall of the shell, and when the rotating barrel rotates, the reciprocating screw is driven by the transmission mechanism to perform intermittent reciprocating motion, and the reciprocating screw can drive the plastic particles on the two heat-resistant plates to gather toward the rotating barrel when it reciprocates.

[0007] Preferably, the transmission mechanism includes a driving gear ring that drives the reciprocating screw to move, a bracket is fixedly provided on the side of the shell close to the driving gear ring, the driving gear ring is rotatably connected to the bracket, a connecting tube is fixedly provided on one end of the rotating barrel close to the driving gear ring, an incomplete internal gear ring that drives the driving gear ring to rotate is fixedly provided on the outer circumference of the connecting tube, and a plurality of support rods are fixedly provided between the incomplete internal gear ring and the connecting tube.

[0008] Preferably, a gear is rotatably provided on the bracket, and both the incomplete internal gear ring and the driving gear ring are meshed with the gear.

[0009] Preferably, an abutment ball adapted to the reciprocating screw is fixedly disposed inside the driving gear ring.

[0010] Preferably, the outer wall of the shell is fixedly connected with two fixed cylinders, a push rod is slidably arranged in each of the fixed cylinders, and a push plate is rotatably arranged at one end of each of the push rods close to the rotating cylinder.

[0011] Preferably, a spring is fixedly arranged between the inner top wall of each fixed cylinder away from the shell and the pushing rod.

[0012] Preferably, one end of the rotating barrel away from the driving gear ring is fixedly connected to an exhaust pipe, and one end of the exhaust pipe away from the rotating barrel is rotatably provided with a buffer box, and an air guide pipe is fixedly connected between one end of each fixed barrel away from the shell and the buffer box.

[0013] Preferably, a sealing ring is fixedly provided at one end of the exhaust pipe close to the rotating barrel, and a sealing belt is fixedly provided on the outer peripheral surface of the movable plate.

[0014] Preferably, a drive motor is fixedly provided on one side of the shell close to the exhaust pipe, a first pulley is fixedly provided on the output end of the drive motor, a second pulley is fixedly provided on the exhaust pipe, and a transmission belt is provided on the first pulley and the second pulley.

[0015] Preferably, two push rods are fixedly provided at one end of the reciprocating screw away from the exhaust pipe, a connecting rod is fixedly provided on each of the push rods, each of the connecting rods is slidably connected to the shell, and a dredging roller is rotatably provided between the two connecting rods.

[0016] In the above technical scheme, the present invention provides a discharging mechanism based on food packaging film processing, which has the following beneficial effects: 1. While the rotating barrel transports the plastic particles, it cooperates with the heat-resistant plate to always prevent heat from being transferred to the plastic particles on the screen, thereby preventing the plastic particles on the screen from softening and sticking; 2. The reciprocating screw is driven to move by the rotating barrel and the transmission mechanism, thereby driving the moving plate to move, which facilitates the scraping of the plastic adhered to the inner wall of the rotating barrel and accelerates the plastic particles to enter the melting mechanism; 3. The hot air in the rotating barrel is squeezed out by the moving plate, thereby driving the push plate to push the plastic particles on the heat-resistant plate toward the rotating barrel, while reducing the heat loss of the melting mechanism; 4. The movement of the reciprocating screw drives the movement of the dredging roller to dredge the mesh of the screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 A schematic diagram of the overall structure provided for an embodiment of the present invention;

[0019] Figure 2 A schematic diagram of the structure of a screen provided in an embodiment of the present invention;

[0020] Figure 3 A schematic diagram of the structure of a dredging roller provided in an embodiment of the present invention;

[0021] Figure 4 A schematic diagram of the structure of a heat-resistant plate provided in an embodiment of the present invention;

[0022] Figure 5 The embodiment of the present invention provides Figure 1 A magnified view of the structure at center A;

[0023] Figure 6 A schematic diagram of the structure of a push rod provided in an embodiment of the present invention;

[0024] Figure 7 A schematic diagram of the structure of a reciprocating screw provided in an embodiment of the present invention;

[0025] Figure 8 A schematic diagram of the structure of an incomplete internal gear ring provided by an embodiment of the present invention;

[0026] Fig. 9 A schematic diagram of the structure of a mobile plate provided in an embodiment of the present invention;

[0027] Fig.10 A schematic structural diagram of an abutment ball provided in an embodiment of the present invention.

[0028] Description of reference numerals:

[0029] 1. Crushing mechanism; 2. Melting mechanism; 3. Shell; 4. Driving motor; 11. Heat-resistant plate; 12. Rotating barrel; 13. Discharge port; 14. First pulley; 15. Transmission belt; 16. Second pulley; 21. Reciprocating screw; 22. Moving plate; 23. Connecting barrel; 24. Incomplete internal gear ring; 25. Gear; 26. Driving gear ring; 27. Abutment ball; 28. Support rod; 29. ​​Bracket; 31. Push rod; 32. Connecting rod; 33. Dredging roller; 34. Screen; 41. Exhaust pipe; 42. Sealing ring; 43. Sealing belt; 44. Buffer box; 45. Air guide pipe; 46. Fixed barrel; 47. Push rod; 48. Spring; 49. Push plate. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] See also Figure 1-10A discharging mechanism based on food packaging film processing includes a shell 3, two heat-resistant plates 11 for isolating heat are fixedly arranged in the shell 3, and a rotating barrel 12 is rotatably arranged between the two heat-resistant plates 11; a reciprocating screw 21 is rotatably and slidably arranged in the rotating barrel 12, and a movable plate 22 for cleaning the inner wall of the rotating barrel 12 is rotatably arranged at one end of the reciprocating screw 21; a transmission mechanism is fixedly arranged on the side wall of the shell 3, and when the rotating barrel 12 rotates, the reciprocating screw 21 is driven by the transmission mechanism to perform intermittent reciprocating motion, and the reciprocating screw 21 can drive the plastic particles on the two heat-resistant plates 11 to gather toward the rotating barrel 12 when reciprocating; the shell 3 A crushing mechanism 1 is fixedly arranged at the end, a screen 34 for filtering plastic particles is fixedly arranged at the connection between the crushing mechanism 1 and the shell 3, a melting mechanism 2 for heating and melting the plastic particles is fixedly arranged at the bottom of the shell 3, and the rotating barrel 12 transfers the plastic particles above the heat-resistant plate 11 to the bottom of the heat-resistant plate 11 and arranges them in the melting mechanism 2 by rotation. The two heat-resistant plates 11 and the rotating barrel 12 have a certain thickness to prevent the heat of the melting mechanism 2 from entering the crushing mechanism 1, thereby preventing the plastic particles on the screen 34 from softening and bonding. The rotating barrel 12 is rotatably arranged between the two heat-resistant plates 11, and a discharge port for plastic particles to enter and exit is opened on the rotating barrel 12 The opening 13 is provided between the two heat-resisting plates 11, and there is a gap between the two heat-resisting plates 11 for convenient entry and discharge of plastic particles. The gap between the two heat-resisting plates 11 is consistent with the size and shape of the discharge opening 13. The outer wall of the rotating barrel 12 is tightly fitted with the two heat-resisting plates 11. The upper end surfaces of the two heat-resisting plates 11 are both arranged as inclined surfaces facing the rotating barrel 12. The plastic particles leaking through the screen 34 fall on the inclined surfaces on the heat-resisting plates 11, which makes it easier to slide toward the rotating barrel 12. The reciprocating screw 21 can rotate and slide in the rotating barrel 12. When in use, the larger plastic particles are crushed by the crushing mechanism 1 and then fall onto the heat-resisting plates 11 through the screen 34. The rotating barrel 12 is rotated, and the discharge opening 1 of the rotating barrel 12 is opened. 3 also rotates accordingly. When the discharge port 13 of the rotating barrel 12 rotates to the gap above the two heat-resistant plates 11, the plastic particles on the rotating barrel 12 fall into the rotating barrel 12, and the outer wall of the rotating barrel 12 blocks the gap under the two heat-resistant plates 11. The rotating barrel 12 continues to rotate. When the discharge port 13 of the rotating barrel 12 rotates to the gap under the two heat-resistant plates 11, the plastic particles in the rotating barrel 12 fall into the melting mechanism 2, and the outer wall of the rotating barrel 12 blocks the gap on the upper side of the two heat-resistant plates 11, so that the heat in the melting mechanism 2 cannot be transferred to the crushing mechanism 1, thereby preventing the plastic particles on the screen 34 from softening, bonding or even melting.

[0032] Specifically, the movable plate 22 fits tightly against the inner wall of the rotating barrel 12, and the contact portion between the rotating barrel 12 and the movable plate 22 can form a tight circle. In the initial state, the movable plate 22 is at the end of the rotating barrel 12 away from the transmission mechanism. When the discharge port 13 on the rotating barrel 12 intersects with the gap on the lower sides of the two heat-resistant plates 11, the reciprocating screw 21 is driven by the transmission mechanism to move, so that the movable plate 22 moves toward the transmission mechanism. When the movable plate 22 moves, the plastic particles adhering to the inner wall of the rotating barrel 12 are scraped off, and at the same time, the plastic particles in the rotating barrel 12 are squeezed, thereby accelerating the particles in the rotating barrel 12 to fall into the melting mechanism 2. When the rotating barrel 12 discharges materials to the melting mechanism 2, the hot air in the melting mechanism 2 will also enter the rotating barrel 12 When the discharge port 13 of the rotary barrel 12 is separated from the gap on the lower sides of the two heat-resistant plates 11, the movable plate 22 is driven by the transmission mechanism and the reciprocating screw 21 to move in a direction away from the transmission mechanism. When the discharge port 13 of the rotary barrel 12 is completely blocked by one of the heat-resistant plates 11, the movable plate 22 will squeeze the hot air in the rotary barrel 12 out of the rotary barrel 12 when it moves away from the transmission mechanism, thereby preventing the hot air from contacting the plastic powder between the two heat-resistant plates 11 so that the plastic powder softens and sticks to the surface of the rotary barrel 12 or the heat-resistant plates 11. The extruded hot air is used to push the plastic particles on the inclined surface of the heat-resistant plate 11 toward the rotary barrel 12. When the movable plate 22 moves to the end of the rotary barrel 12 away from the transmission mechanism, the transmission mechanism no longer drives the reciprocating screw 21 to move.

[0033] Furthermore, the transmission mechanism includes a driving gear ring 26 for driving the reciprocating screw 21 to move, a bracket 29 is fixedly provided on one side of the shell 3 close to the driving gear ring 26, the driving gear ring 26 is rotatably connected to the bracket 29, a connecting tube 23 is fixedly provided on one end of the rotary barrel 12 close to the driving gear ring 26, an incomplete internal gear ring 24 for driving the driving gear ring 26 to rotate is fixedly provided on the outer circumference of the connecting tube 23, and a plurality of support rods 28 are fixedly provided between the incomplete internal gear ring 24 and the connecting tube 23; the connecting tube 23 passes through the shell 3, and the movement of the reciprocating screw 21 is controlled by the rotation of the driving gear ring 26, the driving gear ring 26 is supported by the bracket 29 to prevent the driving gear ring 26 from interfering with the support rod 28, and when the rotary barrel 12 rotates, the incomplete internal gear ring 24 is driven to rotate by the support rod 28, and when the incomplete internal gear ring 24 rotates The driving gear ring 26 is driven to rotate, and the inner ring of the incomplete internal gear ring 24 has only some teeth. When the discharge port 13 of the rotary barrel 12 partially intersects with the gap on the lower sides of the two heat-resistant plates 11, the incomplete internal gear ring 24 drives the driving gear ring 26 to rotate, so that the movable plate 22 moves toward the driving gear ring 26, accelerating the falling of the plastic particles in the rotary barrel 12. When there are no plastic particles in the rotary barrel 12 and the discharge port 13 is completely blocked by one of the heat-resistant plates 11, the reciprocating screw 21 drives the movable plate 22 to move away from the driving gear ring 26, thereby squeezing out the hot air in the rotary barrel 12. When the rotary barrel 12 is filled with material and is full of plastic particles and the discharge port 13 rotates toward the gap on the lower sides of the two heat-resistant plates 11, the incomplete internal gear ring 24 does not drive the gear 25 and the driving gear ring 26 to rotate.

[0034] Furthermore, a gear 25 is rotatably provided on the bracket 29, and both the incomplete inner gear ring 24 and the driving gear ring 26 are meshed with the gear 25; the gear 25 is located between the incomplete inner gear ring 24 and the driving gear ring 26, and the gear 25 is supported by the bracket 29, so that the incomplete inner gear ring 24 can drive the driving gear ring 26 to rotate through the gear 25, thereby increasing the transmission ratio between the incomplete inner gear ring 24 and the driving gear ring 26;

[0035] An abutment ball 27 adapted to the reciprocating screw 21 is fixedly arranged inside the driving gear ring 26; the abutment ball 27 is adapted to the thread groove on the reciprocating screw 21, and when the driving gear ring 26 rotates, the reciprocating screw 21 is driven to produce reciprocating motion through the cooperation between the abutment ball 27 and the thread groove on the reciprocating screw 21.

[0036] In another embodiment of the present invention, two fixed cylinders 46 are fixedly connected to the outer wall of the shell 3, and a push rod 47 is slidably arranged in each fixed cylinder 46. A push plate 49 is rotatably arranged at one end of each push rod 47 close to the rotating cylinder 12; the push rod 47 will not rotate, and a sealing ring (not marked in the figure) is fixedly arranged on the outer circumference of each push rod 47. The inner hole of the fixed cylinder 46 is parallel to the inclined surface of the heat-resistant plate 11 on the same side, and the fixed cylinder 46 is on the upper side of the heat-resistant plate 11. In the initial state, the push plate 49 is at the upper end of the corresponding heat-resistant plate 11, and the push rod 47 is pushed outward along the inner wall direction of the fixed cylinder 46. 47 drives the push plate 49 to move downward along the inclined surface of the heat-resistant plate 11, thereby pushing the plastic particles on the inclined surface of the heat-resistant plate 11 to the middle of the transfer barrel 12, making it convenient for the transfer barrel 12 to transport the plastic particles. The upper end of the push plate 49 is rotatably connected to the upper side of the push rod 47. When the push rod 47 is pulled upward, the bottom of the push plate 49 is flipped toward the transfer barrel 12, thereby not pushing the plastic particles on the inclined surface of the heat-resistant plate 11 upward. When the push plate 49 moves downward, the bottom of the push plate 49 is restricted by the push rod 47 to abut against the inclined surface of the heat-resistant plate 11 and cannot rotate.

[0037] Specifically, a spring 48 is fixedly arranged between the inner top wall of each fixed cylinder 46 away from the shell 3 and the pushing rod 47; after the pushing rod 47 is pushed downward to make the pushing plate 49 push the plastic particles toward the rotating cylinder 12, the spring 48 restores the pushing rod 47 and the pushing plate 49 to their initial state.

[0038] Furthermore, an exhaust pipe 41 is fixedly connected to one end of the rotating barrel 12 away from the driving gear ring 26, and a buffer box 44 is rotatably provided at one end of the exhaust pipe 41 away from the rotating barrel 12. An air guide pipe 45 is fixedly connected between one end of each fixed barrel 46 away from the shell 3 and the buffer box 44; the buffer box 44 is hollow inside, and when the movable plate 22 moves in a direction away from the driving gear ring 26, the hot air in the rotating barrel 12 enters the buffer box 44 through the exhaust pipe 41, and then enters the two fixed barrels 46 through the buffer box 44 and the air guide pipe 45. When the hot air is squeezed into the two fixed barrels 46, the air pressure in the fixed barrels 46 increases, and the squeezed hot air is compressed. The air pushes the push rod 47 to move toward the transfer barrel 12, thereby pushing the plastic particles toward the transfer barrel 12. When the movable plate 22 moves to block the exhaust pipe 41, the movable plate 22 no longer moves. At this time, the transfer barrel 12 is filled with plastic particles, thereby preventing hot air from contacting the plastic particles. When the discharge port 13 of the transfer barrel 12 intersects the gap on the lower sides of the two heat-resistant plates 11, the movable plate 22 moves and no longer blocks the exhaust pipe 41. At this time, the push plate 49 is moved upward by the spring 48, and the hot air in the fixed barrel 46 is squeezed into the transfer barrel 12 and the melting mechanism 2 again, thereby reducing the heat loss in the melting mechanism 2.

[0039] A sealing ring 42 is fixedly provided at one end of the exhaust pipe 41 close to the rotating barrel 12, and a sealing belt 43 is fixedly provided on the outer peripheral surface of the movable plate 22; a filter screen (not marked in the figure) is fixedly provided at one end of the exhaust pipe 41 close to the rotating barrel 12, and the filter screen prevents plastic particles from entering the exhaust pipe 41. A small part of the sealing ring 42 is exposed from the inner wall of the rotating barrel 12. When the movable plate 22 blocks the exhaust pipe 41, the sealing ring 42 and the sealing belt 43 ensure airtightness, thereby facilitating the pushing of the push rod 47.

[0040] A driving motor 4 is fixedly provided on one side of the shell 3 close to the exhaust pipe 41, a first pulley 14 is fixedly provided on the output end of the driving motor 4, a second pulley 16 is fixedly provided on the exhaust pipe 41, and a transmission belt 15 is provided on the first pulley 14 and the second pulley 16; the first pulley 14 is driven to rotate by the driving motor 4, and then the exhaust pipe 41 is driven to rotate by the transmission belt 15 and the second pulley 16, and when the exhaust pipe 41 rotates, the rotating barrel 12 is driven to rotate, thereby driving the entire discharge mechanism to operate.

[0041] In another embodiment of the present invention: two push rods 31 are fixedly provided at one end of the reciprocating screw 21 away from the exhaust pipe 41, and a connecting rod 32 is fixedly provided on each push rod 31, and each connecting rod 32 is slidably connected to the shell 3, and a dredging roller 33 is rotatably provided between the two connecting rods 32; the dredging roller 33 is rotatably provided at one end of the two connecting rods 32 away from the push rod 31, and a plurality of hard bristles are fixedly provided on the dredging roller 33, and the dredging roller 33 is located at the top of the shell 3, and the cooperation between the two connecting rods 32 and the push rod 31 can prevent the reciprocating screw 21 from rotating. When the reciprocating screw 21 moves, the dredging roller 33 is driven to move by the push rod 31 and the connecting rod 32, and when the dredging roller 33 moves, the hard bristles are inserted into the mesh of the screen 34 to dredge the screen 34, thereby facilitating the crushed plastic particles to fall on the inclined surface of the heat-resistant plate 11.

[0042] Working principle: The exhaust pipe 41 is driven by the driving motor 4 to rotate, thereby driving the rotating barrel 12 to rotate. When the rotating barrel 12 rotates, the plastic particles on the heat-resistant plate 11 are rotated and discharged into the melting mechanism 2. When the rotating barrel 12 rotates, it drives the incomplete inner gear ring 24 to rotate. When the incomplete inner gear ring 24 rotates, it drives the driving gear ring 26 to rotate through the gear 25, thereby driving the reciprocating screw 21 to move. When the reciprocating screw 21 moves, it drives the dredging roller 33 to dredge the mesh of the screen 34. When the reciprocating screw 21 moves, it also drives the moving plate 22 to move. When the moving plate 22 moves toward the driving gear ring 26, it can The hot air in the rotating barrel 12 is squeezed out when the movable plate 22 moves away from the driving gear ring 26 to prevent the hot air from contacting the plastic powder on the heat-resistant plate 11. The squeezed hot air enters the two fixed barrels 46 through the air guide pipe 45, so that the push rod 47 moves to concentrate the material on the heat-resistant plate 11 above the rotating barrel 12. The push rod 47 can be pulled up by the spring 48 to make the hot air in the fixed barrel 46 enter the rotating barrel 12 and the melting mechanism 2 again, thereby reducing the heat loss of the melting mechanism 2.

[0043] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A discharging mechanism based on food packaging film processing, comprising a housing (3), characterized in that: Two heat-resisting plates (11) for isolating heat are fixedly arranged in the shell (3), and a rotating barrel (12) is rotatably arranged between the two heat-resisting plates (11); A reciprocating screw (21) is rotatably and slidably disposed in the rotating barrel (12), and a movable plate (22) for cleaning the inner wall of the rotating barrel (12) is rotatably disposed at one end of the reciprocating screw (21); A transmission mechanism, which is fixedly arranged on the side wall of the housing (3), and when the rotating barrel (12) rotates, the reciprocating screw (21) is driven by the transmission mechanism to perform intermittent reciprocating motion, and when the reciprocating screw (21) reciprocates, the plastic particles on the two heat-resistant plates (11) are driven to gather toward the rotating barrel (12); The transmission mechanism comprises a driving gear ring (26) for driving the reciprocating screw (21) to move, a bracket (29) is fixedly provided on one side of the housing (3) close to the driving gear ring (26), the driving gear ring (26) is rotatably connected to the bracket (29), a connecting cylinder (23) is fixedly provided on one end of the rotating cylinder (12) close to the driving gear ring (26), an incomplete inner gear ring (24) for driving the driving gear ring (26) to rotate is fixedly provided on the outer circumference of the connecting cylinder (23), and a plurality of supporting rods (28) are fixedly provided between the incomplete inner gear ring (24) and the connecting cylinder (23); The outer wall of the housing (3) is fixedly connected with two fixed cylinders (46), each of which has a push rod (47) slidably disposed in it, and each of which has a push plate (49) rotatably disposed at one end of the push rod (47) close to the rotating cylinder (12); A spring (48) is fixedly arranged between the inner top wall of each fixed cylinder (46) away from the housing (3) and the push rod (47); An end of the rotating barrel (12) away from the driving gear ring (26) is fixedly connected to an exhaust pipe (41), an end of the exhaust pipe (41) away from the rotating barrel (12) is rotatably provided with a buffer box (44), and an air guide pipe (45) is fixedly connected between an end of each fixed barrel (46) away from the housing (3) and the buffer box (44); A melting mechanism (2) for heating and melting plastic particles is fixedly arranged at the bottom of the shell (3); a discharge port (13) for the plastic particles to enter and exit is provided on the rotating barrel (12); a gap is also provided between the two heat-resisting plates (11) for facilitating the entry and discharge of the plastic particles; the gap between the two heat-resisting plates (11) is consistent in size and shape with the discharge port (13).

2. A discharging mechanism based on food packaging film processing according to claim 1, characterized in that: A gear (25) is rotatably arranged on the bracket (29), and the incomplete internal gear ring (24) and the driving gear ring (26) are both meshed with the gear (25).

3. A discharging mechanism based on food packaging film processing according to claim 2, characterized in that: An abutment ball (27) adapted to the reciprocating screw rod (21) is fixedly arranged inside the driving gear ring (26).

4. A discharging mechanism based on food packaging film processing according to claim 3, characterized in that: A sealing ring (42) is fixedly provided at one end of the exhaust pipe (41) close to the rotating barrel (12), and a sealing belt (43) is fixedly provided on the outer peripheral surface of the movable plate (22).

5. A discharging mechanism based on food packaging film processing according to claim 4, characterized in that: A drive motor (4) is fixedly arranged on one side of the housing (3) close to the exhaust pipe (41); a first pulley (14) is fixedly arranged on the output end of the drive motor (4); a second pulley (16) is fixedly arranged on the exhaust pipe (41); and a transmission belt (15) is arranged on the first pulley (14) and the second pulley (16) for transmission.

6. A discharging mechanism based on food packaging film processing according to claim 5, characterized in that: Two push rods (31) are fixedly arranged at one end of the reciprocating screw (21) away from the exhaust pipe (41), and a connecting rod (32) is fixedly arranged on each of the push rods (31). Each of the connecting rods (32) is slidably connected to the shell (3), and a dredging roller (33) is rotatably arranged between the two connecting rods (32).

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