Plastic master batch blow molding equipment based on degradable agricultural film production

Abstract

The invention relates to the technical field of plastic master batch blow molding, in particular to plastic master batch blow molding equipment based on degradable agricultural film production, which comprises an extruder body, a die head connected with the extruder body and an air ring mounted on the die head, an annular supporting shell is arranged on the outer side of the die head; according to the plastic master batch blow molding equipment based on degradable agricultural film production, the annular supporting shell is arranged, the supporting shell is arranged on the outer side of the die head, and after an agricultural film is extruded at the die head, under the connection action of a plurality of guide stretching mechanisms on the inner ring of the supporting shell, the plastic master batch is subjected to blow molding; according to the automatic stretching device for the degradable agricultural film, the effect of automatically stretching the agricultural film upwards from the die head can be achieved, an operator does not need to make contact with the die head, meanwhile, the operator does not need to stretch the agricultural film in a molten plastic flow state, the production safety of the degradable agricultural film is improved, and meanwhile the production efficiency of the degradable agricultural film is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic masterbatch blow molding, and specifically to a plastic masterbatch blow molding device for the production of degradable agricultural films. Background Technique

[0002] In the process of blow molding of degradable agricultural films, plastic particles (such as polyethylene, etc.) are first mixed in a specific proportion and undergo sufficient drying treatment; in the extruder, the plastic particles gradually melt in a high-temperature environment and are finely processed by the die head to form a continuous molten plastic stream; the molten plastic stream extruded from the die head gradually forms a film bubble through the cooling and blowing effects of the air ring; the film that has cooled and solidified is subjected to stretching treatment by a professional stretching mechanism to make the thickness and performance of the film reach the expected effect, while increasing its uniformity and transparency; after cutting off a certain width of waste edges on both sides of the film, an online winding machine is used for winding to prepare for subsequent packaging or processing; Currently, existing degradable agricultural films are extruded through the die head of an extruder, and are stretched and cooled by stretching and cooling and blowing equipment. When extruding at the die head, a continuous molten plastic stream is formed. At the initial state of the extrusion of the agricultural film, multiple operators are required to stretch the molten plastic stream located at the die head to a certain height, and then connect the agricultural film to the bottom of the previously blow-molded agricultural film. By stretching the previous group of agricultural films, the newly blown agricultural film is pulled, so that the newly blown agricultural film can be formed through stretching, blowing, cooling, and molding. Since the newly blown agricultural film is extruded and formed under high temperature melting, this high-temperature environment is likely to cause burns to the skin of the operators. At the same time, the operators are relatively close to the die head, there are certain safety hazards. Therefore, we propose a plastic masterbatch blow molding device for the production of degradable agricultural films. Summary of the Invention

[0003] The purpose of the present invention is to provide a plastic masterbatch blow molding device for the production of degradable agricultural films to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A plastic masterbatch blow molding device for the production of degradable agricultural films, including an extruder body, a die head connected to the extruder body, and an air ring installed on the die head. The extrusion port of the die head is arranged upward on the ground. A ring-shaped support shell is provided outside the die head, and a support mechanism for supporting the support shell is installed on the ground; A plurality of connection mechanisms are arranged in a ring around the inner circle of the support shell, and a synchronous adjustment mechanism for synchronously driving the plurality of connection mechanisms is provided inside the support shell; A guiding and stretching mechanism is connected to the connecting mechanism. The guiding and stretching mechanism is used to assist in guiding during the blow molding of agricultural films and simultaneously stretch the agricultural films upward in their initial state.

[0005] Furthermore, the supporting mechanism includes support rods, support blocks, moving blocks, lifting screw rods, and rotating members. There are two support rods, and both of the two support rods are fixedly installed on the ground. The support blocks are slidably sleeved outside the support rods, and the sliders are fixedly connected to the support shell. The moving blocks are fixedly installed on the support shell, and the moving blocks are threadedly sleeved outside the lifting screw rods. The lifting screw rods are rotatably connected to the ground through bearing seats, and the rotating members are used to drive the lifting screw rods.

[0006] Furthermore, the connecting mechanism includes an internal thread sleeve, a threaded rod, a connecting frame, a telescopic member, and a guiding member. One end of the internal thread sleeve penetrates through the support shell, and the internal thread sleeve is rotatably connected to the support shell. The threaded rod is located inside the inner circle of the support shell. One end of the threaded rod is threadedly connected to the internal thread sleeve, and the other end of the threaded rod is fixedly connected to the connecting frame. There are two telescopic members, and one end of each of the two telescopic members is connected to the support shell, and the other end of the two telescopic members is fixedly connected to the connecting frame; The guiding member is fixedly installed at the top of the connecting frame, and the guiding and stretching mechanism is installed at the bottom of the connecting frame.

[0007] Furthermore, the guiding member includes a guiding frame and guiding rollers. The guiding frame is fixedly connected to the top of the connecting frame. There are multiple guiding rollers, and both ends of the multiple guiding rollers are rotatably connected to the connecting frame, and the multiple guiding rollers guide the agricultural films during the blow molding of the agricultural films.

[0008] Furthermore, the synchronous adjustment mechanism includes a first straight-toothed helical gear, a second straight-toothed helical gear, a rotating shaft, a fixing plate, a synchronous gear, an external gear ring, and an adjustment motor. There is an annular cavity inside the support shell, and the first straight-toothed helical gear is located inside the annular cavity. There are multiple first straight-toothed helical gears, and the multiple first straight-toothed helical gears are respectively fixedly connected to the multiple internal thread sleeves, and the second straight-toothed helical gear is meshed with the first straight-toothed helical gear. The rotating shaft is fixedly installed on the second straight-toothed helical gear. The fixing plate is rotatably sleeved outside the rotating shaft, and the fixing plate is fixedly connected to the annular cavity. The synchronous gear is fixedly sleeved on the top of the rotating shaft. The external gear ring is rotatably connected inside the annular cavity, and the external gear ring is meshed with the multiple synchronous gears. The adjustment motor is installed on the support, and the adjustment motor is used to drive one of the rotating shafts. By providing the synchronous adjustment mechanism, the synchronous adjustment of the multiple internal thread sleeves can be achieved.

[0009] Further, the guiding and stretching mechanism includes a connecting plate, a fixed clamping plate, a movable clamping plate, a pushing member and a tearing member. The connecting plate is fixedly installed at the bottom of the connecting frame. At one end of the bottom of the connecting plate away from the connecting frame, two connecting columns are fixedly installed, and the two connecting columns are fixedly installed at the top of the fixed clamping plate; The movable clamping plate is slidably connected to the bottom of the connecting plate, and the movable clamping plate is located on the side of the fixed clamping plate away from the guiding roller. Two positioning members are provided on the movable clamping plate, and the two positioning members are connected to the connecting plate. The pushing member is installed on the connecting frame, and the pushing member is used to drive the movable clamping plate; The tearing member is installed on the fixed clamping plate, and the tearing member is used to tear the pulled agricultural film. By providing the guiding and stretching mechanism, the function of stretching and guiding the agricultural film is realized.

[0010] Further, the positioning member includes a positioning rod and a positioning plate. The positioning rod is fixedly installed on the movable clamping plate, and the connecting plate is provided with a connection port corresponding to the positioning rod. The positioning plate is fixedly sleeved on the outer side of the top of the positioning rod, and the positioning plate is slidably connected to the upper surface of the connecting plate. By providing the positioning member, the function of limiting and guiding the movable clamping plate during movement is realized.

[0011] Further, the pushing member includes an electric push rod and a pushing plate. The electric push rod is fixedly installed on the connecting frame, and the output end of the electric push rod is fixedly connected to the pushing plate. The pushing plate is fixedly installed on the movable clamping plate. By providing the pushing member, the function of pushing the movable clamping plate is realized.

[0012] Further, the tearing member includes an arc plate, a cutting blade, a connecting block and a cutting member. The arc plate is fixedly installed at the top of the side of the fixed clamping plate away from the movable clamping plate. Two cutting blades are provided, and the two cutting blades are used to cut and tear the agricultural film between the fixed clamping plate and the movable clamping plate. The connecting block is installed on the top of the cutting blade. The cutting member is installed on the arc plate, and the cutting member is used to drive the two connecting blocks. By providing the tearing member, the function of tearing the lifted agricultural film is realized.

[0013] Further, the cutting member includes a guiding plate, a guiding rod, a guiding sleeve, a vertical rod and a synchronous swinging member. The guiding plate is fixedly installed on the arc plate, and a guiding groove is provided on the guiding plate. Two guiding rods are provided, and the two guiding rods respectively slide through the guiding groove, and one end of the guiding rod is fixedly connected to the guiding sleeve. The guiding sleeve is fixedly connected to the connecting block, and the guiding sleeve is slidably sleeved on the outer side of the vertical rod. An arc-shaped opening is provided on the arc plate, and the bottom of the vertical rod is slidably connected to the arc-shaped opening. The synchronous swinging member is installed on the arc plate, and the synchronous swinging member is used to drive the two vertical rods in a synchronous and reverse manner. By providing the cutting member, the function of cutting the agricultural film is realized.

[0014] The present invention has at least the following beneficial effects: 1. When the present invention is in use, through the provided annular support shell, which is arranged outside the die head. After the agricultural film is extruded at the die head, under the connection action of multiple guiding and stretching mechanisms on the inner ring of the support shell, the agricultural film can be automatically stretched upward from the die head, without the need for operators to contact the die head, and without the need for operators to stretch the agricultural film in the state of molten plastic flow. This not only improves the safety of the production of degradable agricultural films, but also improves the production efficiency of degradable agricultural films; 2. In the present invention, through the provided tearing member, after the agricultural film is stretched to a certain height, the agricultural film can be torn, which is convenient for the newly blown agricultural film to be connected with the previous agricultural film, so that the newly blown agricultural film can be quickly blow-molded. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a side view of the overall structure of the present invention; Figure 3 is the present invention Figure 2 Schematic diagram of the enlarged structure of area A in; Figure 4 is a schematic diagram of the support shell structure of the present invention; Figure 5 is the present invention Figure 4 Schematic diagram of the enlarged structure of area B in; Figure 6 is the present invention Figure 4 Schematic diagram of the enlarged structure of area C in; Figure 7 is a schematic diagram of the air ring structure of the present invention; Figure 8 is a top view of the overall structure of the present invention; Figure 9 is a schematic diagram of the connecting frame structure of the present invention; Figure 10 is a top view schematic diagram of the die head of the present invention; Figure 11 is a schematic diagram of the connecting plate structure of the present invention; Figure 12 is a schematic diagram of the fixed clamping plate structure of the present invention; Figure 13 is a side view schematic diagram of the guiding plate of the present invention; Figure 14 is a schematic diagram of the cutting blade structure of the present invention; Figure 15 is a schematic diagram of the synchronous swinging member structure of the present invention.

[0016] In the figure: 1 - Extruder body; 2 - Die head; 21 - Air ring; 3 - Support shell; 31 - Annular cavity; 4 - Support mechanism; 41 - Support rod; 42 - Support block; 43 - Moving block; 44 - Lifting screw rod; 45 - Rotating part; 451 - Rotating motor; 452 - First rotating gear; 453 - Second rotating gear; 5 - Connecting mechanism; 51 - Internal thread sleeve; 52 - Threaded rod; 53 - Connecting frame; 54 - Telescopic part; 55 - Guide part; 551 - Guide frame; 552 - Guide roller; 6 - Synchronous adjustment mechanism; 61 - First straight bevel gear; 62 - Second straight bevel gear; 63 - Rotating shaft; 64 - Fixed plate; 65 - Synchronous gear; 66 - External gear ring; 67 - Adjusting motor; 7 - Guide and stretching mechanism; 71 - Connecting plate; 711 - Connecting column; 712 - Connecting port; 72 - Fixed clamping plate; 73 - Moving clamping plate; 731 - Stabilizing block; 732 - Elastic sheet; 733 - Extrusion block; 74 - Pushing part; 741 - Electric push rod; 742 - Pushing plate; 75 - Positioning part; 751 - Positioning rod; 752 - Positioning plate; 8 - Tearing part; 81 - Arc plate; 811 - Arc opening; 82 - Cutting blade; 83 - Connecting block; 84 - Scratching part; 841 - Guide plate; 8411 - Guide groove; 842 - Guide rod; 843 - Guide sleeve; 844 - Vertical rod; 9 - Synchronous swinging part; 91 - Extension plate; 92 - Positioning shaft; 93 - Sliding sleeve; 94 - Sliding rod; 95 - Positioning gear; 96 - Positioning motor; 10 - Ground; 11 - Previous group of blown agricultural film; 12 - Newly blown agricultural film. Specific embodiments

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] Embodiment 1 Please refer to Figures 1 to 3 , a plastic masterbatch blow molding device for the production of degradable agricultural film, including an extruder body 1, a die head 2 connected to the extruder body 1, and an air ring 21 installed on the die head 2. The extrusion port of the die head 2 is arranged upward on the ground 10. That is, in the prior art, since the agricultural film is relatively long during the blow molding process, the die head 2 is embedded upward in the ground 10, which is convenient for blow molding the agricultural film. At the same time, a stretching mechanism and a winding mechanism are also provided to realize stretching and winding of the agricultural film; A ring-shaped support shell 3 is provided outside the die head 2, and a support mechanism 4 for supporting the support shell 3 is installed on the ground 10. The support mechanism 4 includes support rods 41, support blocks 42, moving blocks 43, lifting lead screws 44 and rotating members 45. There are two support rods 41, and both support rods 41 are fixedly installed on the ground 10. The support block 42 is slidably sleeved outside the support rod 41, and the slider is fixedly connected to the support shell 3. The moving block 43 is fixedly installed on the support shell 3, and the moving block 43 is threadedly sleeved outside the lifting lead screw 44. The lifting lead screw 44 is rotatably connected to the ground 10 through a bearing seat, and the rotating member 45 is used to drive the lifting lead screw 44; Specifically: By operating the rotating member 45, the lifting lead screw 44 rotates relative to the moving block 43 and provides a driving force for the moving block 43. Due to the limiting effect of the moving block 43 on the support shell 3, and at the same time, due to the limiting effect of the support shell 3 on the support block 42 and the support rod 41, further, the support shell 3 moves up or down relative to the die head 2.

[0019] A plurality of connecting mechanisms 5 are arranged in a ring around the inner circle of the support shell 3, and a synchronous adjustment mechanism 6 for synchronously driving the plurality of connecting mechanisms 5 is arranged inside the support shell 3; Please refer to Figures 4 to 9 , the connecting mechanism 5 includes an internal thread sleeve 51, a threaded rod 52, a connecting frame 53, a telescopic member 54 and a guiding member 55. One end of the internal thread sleeve 51 penetrates through the support shell 3, and the internal thread sleeve 51 is rotatably connected to the support shell 3. The threaded rod 52 is located at the inner circle of the support shell 3. One end of the threaded rod 52 is threadedly connected to the internal thread sleeve 51, and the other end of the threaded rod 52 is fixedly connected to the connecting frame 53. There are two telescopic members 54, and one end of each of the two telescopic members 54 is connected to the support shell 3, and the other end of the two telescopic members 54 is fixedly connected to the connecting frame 53. In this embodiment, the telescopic member 54 is preferably a telescopic rod, that is, the two ends of the telescopic rod are respectively fixedly connected to the support shell 3 and the connecting frame 53; The guiding member 55 is fixedly installed at the top of the connecting frame 53, and the guiding and stretching mechanism 7 is installed at the bottom of the connecting frame 53.

[0020] Please refer to Figure 7 and Figure 9 , the guiding member 55 includes a guiding frame 551 and guiding rollers 552. The guiding frame 551 is fixedly connected to the top of the connecting frame 53. There are a plurality of guiding rollers 552, and both ends of the plurality of guiding rollers 552 are rotatably connected to the connecting frame 53, and the plurality of guiding rollers 552 guide the agricultural film during the blow molding of the agricultural film; Please refer to Figures 4 to 7, the synchronous adjustment mechanism 6 includes a first straight bevel gear 61, a second straight bevel gear 62, a rotating shaft 63, a fixing plate 64, a synchronous gear 65, an external gear ring 66 and an adjustment motor 67. An annular cavity 31 is provided inside the support shell 3, and the first straight bevel gear 61 is located inside the annular cavity 31. There are multiple first straight bevel gears 61, and the multiple first straight bevel gears 61 are respectively fixedly connected to multiple internal thread sleeves 51. The second straight bevel gear 62 is meshed with the first straight bevel gear 61. The rotating shaft 63 is fixedly installed on the second straight bevel gear 62. The fixing plate 64 is rotatably sleeved outside the rotating shaft 63, and the fixing plate 64 is fixedly connected to the annular cavity 31. The synchronous gear 65 is fixedly sleeved on the top of the rotating shaft 63. The external gear ring 66 is rotatably connected inside the annular cavity 31, and the external gear ring 66 is meshed with the multiple synchronous gears 65. The adjustment motor 67 is installed on the support, and the adjustment motor 67 is used to drive one of the rotating shafts 63; Specific implementation process: In this embodiment, when the degradable agricultural film is blow-molded, when the degradable agricultural film is initially extruded through the die head 2, the support shell 3 moves to a position close to the die head 2. At the same time, by operating the adjustment motor 67, one of the synchronous gears 65 is rotated. Meanwhile, under the synchronous action of the external gear ring 66, the multiple synchronous gears 65 are further synchronously rotated inside the support shell 3. When the multiple synchronous gears 65 rotate, the second straight bevel gear 62 is driven to rotate by the rotating shaft 63, and the second straight bevel gear 62 drives the first straight bevel gear 61 to rotate, so that the internal thread sleeve 51 rotates relative to the threaded rod 52. Since the threaded rod 52 is limited by the telescopic member 54 and the connecting frame 53, the threaded rod 52 drives the connecting frame 53 to move towards the agricultural film; At the same time, this setting can accurately adjust the height of the multiple connecting frames 53 and their positions relative to the agricultural film.

[0021] Please refer to Figures 9 to 15 , a guiding and stretching mechanism 7 is connected to the connecting mechanism 5. The guiding and stretching mechanism 7 is used to assist in guiding during the blow molding of the agricultural film and stretch the agricultural film upward in its initial state.

[0022] The guiding and stretching mechanism 7 includes a connecting plate 71, a fixed clamping plate 72, a movable clamping plate 73, a pushing member 74 and a tearing member 8. The connecting plate 71 is fixedly installed at the bottom of the connecting frame 53. At one end of the bottom of the connecting plate 71 away from the connecting frame 53, two connecting columns 711 are fixedly installed. The two connecting columns 711 are fixedly installed at the top of the fixed clamping plate 72. In this embodiment, both the movable clamping plate 73 and the fixed clamping plate 72 are arc-shaped. On the side where the movable clamping plate 73 and the fixed clamping plate 72 are close to each other, there are anti-slip lines, so as to stably clamp the agricultural film. At the same time, the width of the bottom of the movable clamping plate 73 and the fixed clamping plate 72 is smaller than the width of their top. This setting facilitates the clamping of the agricultural film between the movable clamping plate 73 and the fixed clamping plate 72, and also facilitates the connection of the movable clamping plate 73 and the fixed clamping plate 72 to components such as the connecting frame 53 respectively; The movable clamping plate 73 is slidably connected to the bottom of the connecting plate 71, and the movable clamping plate 73 is located on the side of the fixed clamping plate 72 away from the guiding roller 552. There are two positioning members 75 on the movable clamping plate 73. The two positioning members 75 are connected to the connecting plate 71. The pushing member 74 is installed on the connecting frame 53, and the pushing member 74 is used to drive the movable clamping plate 73; The tearing member 8 is installed on the fixed clamping plate 72, and the tearing member 8 is used to tear the pulled agricultural film.

[0023] The positioning member 75 includes a positioning rod 751 and a positioning plate 752. The positioning rod 751 is fixedly installed on the movable clamping plate 73. At the position of the connecting plate 71 corresponding to the positioning rod 751, there is a connection port 712. The positioning plate 752 is fixedly sleeved on the outside of the top of the positioning rod 751, and the positioning plate 752 is slidably connected to the upper surface of the connecting plate 71.

[0024] The pushing member 74 includes an electric push rod 741 and a pushing plate 742. The electric push rod 741 is fixedly installed on the connecting frame 53, and the output end of the electric push rod 741 is fixedly connected to the pushing plate 742. The pushing plate 742 is fixedly installed on the movable clamping plate 73.

[0025] The tearing member 8 includes an arc-shaped plate 81, a cutting blade 82, a connecting block 83 and a splitting member 84. The arc-shaped plate 81 is fixedly installed at the top of the side of the fixed clamping plate 72 away from the movable clamping plate 73. There are two cutting blades 82. The two cutting blades 82 are used to cut and tear the agricultural film between the fixed clamping plate 72 and the movable clamping plate 73. The connecting block 83 is installed on the top of the cutting blade 82. The splitting member 84 is installed on the arc-shaped plate 81, and the splitting member 84 is used to drive the two connecting blocks 83.

[0026] Please refer to Figures 14 to 15, the cutting member 84 includes a guide plate 841, guide rods 842, guide sleeves 843, vertical rods 844 and a synchronous swing member 9. The guide plate 841 is fixedly installed on the arc plate 81, and a guide groove 8411 is provided on the guide plate 841. In this embodiment, both the guide plate 841 and the guide groove 8411 are V-shaped. There are two guide rods 842, and the two guide rods 842 respectively slide through the guide groove 8411, and one end of the guide rod 842 is fixedly connected to the guide sleeve 843. The guide sleeve 843 is fixedly connected to the connecting block 83, and the guide sleeve 843 is slidably sleeved outside the vertical rod 844. An arc-shaped opening 811 is provided on the arc plate 81, and the bottom of the vertical rod 844 is slidably connected to the arc-shaped opening 811. The synchronous swing member 9 is installed on the arc plate 81, and the synchronous swing member 9 is used to drive the two vertical rods 844 synchronously and in opposite directions; The synchronous swing member 9 includes an extension plate 91, positioning shafts 92, sliding sleeves 93, sliding rods 94, positioning gears 95 and a positioning motor 96. The extension plate 91 is fixedly installed on the side of the arc plate 81 away from the fixed clamping plate 72. There are two positioning shafts 92, and the two positioning shafts 92 are both rotatably connected to the extension plate 91. One end of the sliding sleeve 93 is fixedly sleeved outside the positioning shaft 92, and the sliding rod 94 slides through the other end of the sliding sleeve 93. The end of the sliding rod 94 away from the sliding sleeve 93 is fixedly connected to the vertical rod 844. There are two positioning gears 95, and the two positioning gears 95 are respectively fixedly sleeved outside the two positioning shafts 92. The positioning motor 96 is fixedly installed on the extension plate 91 through a motor bracket, and the output end of the positioning motor 96 is fixedly connected to one of the positioning shafts 92; Specific implementation process: After the degradable agricultural film is extruded through the die head 2, the die orifice of the die head 2 is circular. In the present invention, multiple groups of fixed clamping plates 72 and movable clamping plates 73 are provided. Before the agricultural film is initially extruded from the die head 2, the multiple fixed clamping plates 72 and the multiple movable clamping plates 73 are respectively arranged around and in contact with the outside of the die orifice. Then, the agricultural film is extruded through the gap between the multiple fixed clamping plates 72 and the movable clamping plates 73 for a certain length. In this embodiment, the preferred extrusion length is 30 cm. Then, the multiple electric push rods 741 all run synchronously, so that the movable clamping plate 73 moves along the direction of the fixed clamping plate 72 until the movable clamping plate 73 and the fixed clamping plate 72 stably clamp the molten plastic flow-shaped agricultural film; Subsequently, by operating the rotating member 45, the support shell 3 is moved upward along the vertical direction. At this time, the agricultural film is stretched upward under the connection action of the multi-group of movable clamping plates 73 and the fixed clamping plates 72 until it is stretched to near the bottom of the upper group of agricultural films, and then the support shell 3 stops moving upward. In this embodiment, although the tearing members 8 are provided on all the fixed clamping plates 72, during actual use, according to the tearing position at the bottom of the previous agricultural film, the tearing members 8 at the position of the newly blown agricultural film 12 operate correspondingly. At this time, by operating the positioning motor 96, the two positioning gears 95 rotate. Since the two positioning gears 95 are meshed with each other, the two positioning gears 95 rotate in opposite directions. When the two positioning gears 95 rotate in opposite directions, the sliding sleeves 93 are synchronously rotated through the positioning shaft 92. Then, the two sliding sleeves 93 drive the two vertical rods 844 to rotate in opposite directions through the sliding rods 94. Due to the limiting action of the vertical rods 844 in the arc-shaped openings 811, the cutting knives cut the agricultural film along the gap between the movable clamping plate 73 and the fixed clamping plate 72. At the same time, under the limiting action of the V-shaped guiding grooves 8411 on the guiding plates 841, the two cutting knives move along the gap and move downward at the same time to cut the agricultural film; After cutting, the movable clamping plate 73 and the fixed clamping plate 72 are separated from the agricultural film. Then, the operator connects and fixes the newly blown agricultural film 12 and the bottom of the upper group of agricultural films to each other. Then, by stretching the upper group of agricultural films upward, the newly blown agricultural film 12 is stretched. At the same time of stretching, the air ring 21 is opened to blow-mold the agricultural film. At the same time, multiple guiding rollers 552 are located outside the agricultural film to guide the agricultural film.

[0027] Embodiment Two Please refer to Figures 2 to 3 , Embodiment Two is a further supplementary description of Embodiment One. Specifically, the rotating member 45 includes a rotating motor 451, a first rotating gear 452, and a second rotating gear 453. The rotating motor 451 is fixedly installed on the ground 10, and the output end of the rotating motor 451 is fixedly connected to the first rotating gear 452. The first rotating gear 452 is meshed with the second rotating gear 453, and the second rotating gear 453 is fixedly sleeved outside the lifting screw rod 44; Thus, by operating the rotating motor 451, the first rotating gear 452 further drives the second rotating gear 453 to rotate. When the second rotating gear 453 rotates, the lifting screw rod 44 further rotates relative to the moving block 43. At this time, the moving block 43 is subjected to a driving force, and under the limiting action of the support shell 3, the support block 42, and the support rod 41, the moving block 43 drives the support shell 3 to move relative to the vertical direction.

[0028] Embodiment Three Please refer to Figures 11 to 12, Embodiment 3 is a further supplementary description of Embodiment 1. Specifically: through holes are respectively provided at both ends of the side of the movable clamping plate 73 away from the fixed clamping plate 72, and stabilizing blocks 731 are respectively fixedly installed at the through holes. A groove is provided on one side of the stabilizing block 731 close to the through hole, and an elastic sheet 732 is installed inside the groove. One end of the elastic sheet 732 is provided with a pressing block 733. The pressing block 733 slidably penetrates through the through hole, and a clamping groove is provided at the position of the movable clamping plate 73 corresponding to the pressing block 733; Thus, when the movable clamping plate 73 moves along the fixed clamping plate 72 to clamp and fix the agricultural film, the two pressing blocks 733 on the movable clamping plate 73, under the connection of the elastic sheet 732, the pressing blocks 733 simultaneously further press and fix the agricultural film, and at the same time, the pressing blocks 733 clamp the agricultural film and one end thereof at the clamping groove, further preventing the agricultural film from detaching.

[0029] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plastic masterbatch blow molding device based on the production of degradable agricultural film, comprising an extruder body (1), a die head (2) connected to the extruder body (1), and an air ring (21) installed on the die head (2), wherein the die head (2) is arranged on the ground (10) with the extrusion port facing upward, and is characterized in that: A ring-shaped support shell (3) is provided on the outside of the die head (2), and a support mechanism (4) for supporting the support shell (3) is installed on the ground (10); A plurality of connection mechanisms (5) are arranged around the inner circle of the support shell (3), and a synchronous adjustment mechanism (6) for synchronously driving the plurality of connection mechanisms (5) is arranged inside the support shell (3); The connecting mechanism (5) is connected to a guiding and stretching mechanism (7), and the guiding and stretching mechanism (7) is used to assist in guiding the agricultural film during blow molding, and to stretch the agricultural film upwards in its initial state.

2. A plastic masterbatch blow molding device based on the production of degradable agricultural film according to claim 1, characterized in that: The support mechanism (4) comprises a support rod (41), a support block (42), a moving block (43), a lifting screw rod (44) and a rotating member (45). Two support rods (41) are provided, and the two support rods (41) are fixedly mounted on the ground (10). The support block (42) is slidably sleeved on the outside of the support rod (41), and the slider is fixedly connected to the support shell (3). The moving block (43) is fixedly mounted on the support shell (3), and the moving block (43) is threadedly sleeved on the outside of the lifting screw rod (44). The lifting screw rod (44) is rotatably connected to the ground (10) via a bearing seat. The rotating member (45) is used to drive the lifting screw rod (44).

3. A plastic masterbatch blow molding device based on the production of degradable agricultural film according to claim 2, characterized in that: The connecting mechanism (5) comprises an internally threaded sleeve (51), a threaded rod (52), a connecting frame (53), a telescopic member (54) and a guide member (55); one end of the internally threaded sleeve (51) passes through the support shell (3), and the internally threaded sleeve (51) is rotatably connected to the support shell (3); the threaded rod (52) is located at the inner ring of the support shell (3); one end of the threaded rod (52) is threadedly connected to the internally threaded sleeve (51), and the other end of the threaded rod (52) is fixedly connected to the connecting frame (53); two telescopic members (54) are provided, one end of each of the two telescopic members (54) is connected to the support shell (3), and the other ends of the two telescopic members (54) are fixedly connected to the connecting frame (53); The guide member (55) is fixedly mounted on the top of the connecting frame (53), and the guide stretching mechanism (7) is mounted on the bottom of the connecting frame (53).

4. A plastic masterbatch blow molding device based on the production of degradable agricultural film according to claim 3, characterized in that: The guide member (55) comprises a guide frame (551) and a guide roller (552); the guide frame (551) is fixedly connected to the top of the connecting frame (53); a plurality of guide rollers (552) are provided; both ends of the plurality of guide rollers (552) are rotatably connected to the connecting frame (53); and the plurality of guide rollers (552) guide the agricultural film when the agricultural film is blow-molded.

5. The plastic masterbatch blow molding equipment based on the production of degradable agricultural film according to claim 1, characterized in that: The synchronous adjustment mechanism (6) comprises a first spur helical gear (61), a second spur helical gear (62), a rotating shaft (63), a fixing plate (64), a synchronous gear (65), an outer gear ring (66) and an adjustment motor (67); an annular cavity (31) is provided inside the support shell (3); the first spur helical gear (61) is located inside the annular cavity (31); a plurality of the first spur helical gears (61) are provided; the plurality of the first spur helical gears (61) are respectively fixedly connected to a plurality of internally threaded sleeves (51); and the second spur helical gear (62) is connected to the first spur helical gear (67); 1) meshing connection, the rotating shaft (63) is fixedly mounted on the second spur bevel gear (62), the fixed plate (64) is rotatably sleeved on the outside of the rotating shaft (63), and the fixed plate (64) is fixedly connected to the annular cavity (31), the synchronous gear (65) is fixedly sleeved on the top of the rotating shaft (63), the outer gear ring (66) is rotatably connected inside the annular cavity (31), and the outer gear ring (66) is meshingly connected to a plurality of synchronous gears (65), and the adjusting motor (67) is mounted on the support, and the adjusting motor (67) is used to drive one of the rotating shafts (63).

6. The plastic masterbatch blow molding equipment based on the production of degradable agricultural film according to claim 3, characterized in that: The guide stretching mechanism (7) comprises a connecting plate (71), a fixed clamping plate (72), a movable clamping plate (73), a pushing member (74) and a tearing member (8), wherein the connecting plate (71) is fixedly mounted on the bottom of the connecting frame (53), and two connecting columns (711) are fixedly mounted on the bottom of the connecting plate (71) and at one end away from the connecting frame (53), and the two connecting columns (711) are fixedly mounted on the top of the fixed clamping plate (72); The movable clamping plate (73) is slidably connected to the bottom of the connecting plate (71), and the movable clamping plate (73) is located on a side of the fixed clamping plate (72) away from the guide roller (552). Two positioning members (75) are provided on the movable clamping plate (73), and the two positioning members (75) are connected to the connecting plate (71). The pushing member (74) is installed on the connecting frame (53), and the pushing member (74) is used to drive the movable clamping plate (73); The tearing piece (8) is mounted on the fixed clamping plate (72), and the tearing piece (8) is used to tear the pulled agricultural film.

7. A plastic masterbatch blow molding device based on the production of degradable agricultural film according to claim 6, characterized in that: The positioning member (75) comprises a positioning rod (751) and a positioning plate (752); the positioning rod (751) is fixedly mounted on the movable clamping plate (73); and the connecting plate (71) is provided with a connecting port (712) at a position corresponding to the positioning rod (751); the positioning plate (752) is fixedly sleeved on the outer side of the top of the positioning rod (751); and the positioning plate (752) is slidably connected to the upper surface of the connecting plate (71).

8. The plastic masterbatch blow molding equipment based on the production of degradable agricultural film according to claim 6, characterized in that: The pushing member (74) comprises an electric push rod (741) and a pushing plate (742); the electric push rod (741) is fixedly mounted on the connecting frame (53); the output end of the electric push rod (741) is fixedly connected to the pushing plate (742); and the pushing plate (742) is fixedly mounted on the moving clamping plate (73).

9. The plastic masterbatch blow molding equipment based on the production of degradable agricultural film according to claim 6, characterized in that: The tearing piece (8) comprises an arc plate (81), a cutting blade (82), a connecting block (83) and a splitting piece (84); the arc plate (81) is fixedly mounted on the top of the fixed clamping plate (72) away from the movable clamping plate (73); two cutting blades (82) are provided, and the two cutting blades (82) are used to cut and tear the agricultural film between the fixed clamping plate (72) and the movable clamping plate (73); the connecting block (83) is mounted on the top of the cutting blade (82); the splitting piece (84) is mounted on the arc plate (81), and the splitting piece (84) is used to drive the two connecting blocks (83).

10. The plastic masterbatch blow molding equipment based on the production of degradable agricultural film according to claim 9, characterized in that: The splitting member (84) comprises a guide plate (841), a guide rod (842), a guide sleeve (843), a vertical rod (844) and a synchronous swing member (9); the guide plate (841) is fixedly mounted on the arc plate (81), and a guide groove (8411) is provided on the guide plate (841); two guide rods (842) are provided, and the two guide rods (842) respectively slide through the guide grooves (8411), and one end of the guide rod (842) is connected to the guide groove (8411). The guide sleeve (843) is fixedly connected, the guide sleeve (843) is fixedly connected to the connecting block (83), and the guide sleeve (843) is slidably sleeved on the outside of the vertical rod (844), the arc-shaped plate (81) is provided with an arc-shaped opening (811), and the bottom of the vertical rod (844) is slidably connected to the arc-shaped opening (811), the synchronous swing member (9) is mounted on the arc-shaped plate (81), and the synchronous swing member (9) is used to synchronously drive the two vertical rods (844) in reverse.

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