A special film blowing machine for fully biodegradable ground film

Abstract

The present invention provides a film blowing machine for fully biodegradable mulch, which belongs to the technical field of film blowing equipment. It solves the technical problem that the current film blowing machine cannot grind and mix mulch masterbatch efficiently and deliver it quantitatively and accurately. A film blowing machine for fully biodegradable mulch comprises a fixed frame, a mixing box is fixedly installed inside the fixed frame, a grinding cylinder is fixedly connected to the top of the mixing box, a feed hopper is fixedly connected to the top of the grinding cylinder, a grinding feed assembly is installed inside the grinding cylinder, and a connecting pipe is fixedly installed at the bottom of the mixing box. In the present invention, by arranging a lifting and mixing assembly inside the mixing box, the reciprocating screw rod synchronously drives the gear rod to lift and lower when rotating, so that the top plate limits and blocks the material below the feed hopper, so that the material inside the feed hopper can enter the grinding cylinder through the distribution holes on both sides, thereby realizing the distribution and limitation of the material from the feed hopper to the inside of the mixing box.

Description

Technical Field

[0001] The invention belongs to the technical field of film blowing equipment and relates to a special film blowing machine for ground films, in particular to a special film blowing machine for fully biodegradable ground films. Background Art

[0002] Biodegradable mulch refers to a type of plastic mulch that can be degraded by microorganisms under natural environmental conditions. After microorganisms such as bacteria, fungi and actinomycetes erode the plastic film, the polymer components are hydrolyzed, ionized or protonated due to cell growth, causing mechanical damage and splitting into oligomer fragments. The enzymes secreted by fungi or bacteria decompose or oxidize the water-soluble polymers into water-soluble fragments, generating new small molecule compounds until they are finally decomposed into C02 and H20.

[0003] The film blowing machine heats and melts plastic particles and then blows them into thin films. There are many types of film blowing machines, including PE, POF, PVC, etc. Brand new particles are used to blow out new materials with uniform color, cleanness, and good bag stretching. Ordinary film blowing machines generally use polyolefins as raw materials, which have good fluidity and low degradation. The general steps are: first mixing, heating, melting, extrusion and conveying, blow molding, and winding and packaging.

[0004] After searching, it is found that a Chinese patent document discloses a film blowing machine for fully biodegradable ground film [Application number: CN202410088389.3; Publication number: CN117734059A]. This film blowing machine includes a film blowing machine body, on which a material discharge hopper is connected; the material discharge hopper is rotatably connected to a main shaft, on which a mixing structure is provided, and below the mixing structure a material discharge structure is provided; the mixing structure includes a rotating chamber fixed to the main shaft, in which a pair of vertically arranged synchronous frames are slidably connected, and both ends of the pair of synchronous frames are fixedly connected to connecting plates; an extended stirring paddle is fixedly connected to the connecting plate, and a fixed stirring paddle corresponding to the extended stirring paddle is fixedly connected to the main shaft, and the extended stirring paddle can slide along the fixed stirring paddle; a plurality of guide plates are rotatably connected to the rotating chamber, and the plurality of guide plates rotate with the movement of the synchronous frame.

[0005] Although the film blowing machine disclosed in the patent uses a stirring paddle to mix materials and improve the feeding effect, since the masterbatch is granular, it is easy for the particles to be difficult to completely melt during mixing, so that the granular particles affect the film blowing quality of the ground film, and are easy to block the die head, causing the film blowing machine to malfunction and shortening the service life of the film blowing machine. At the same time, the molten material is transported by a screw conveyor, which is easy to cause uneven feeding of the molten material to the die head due to extrusion, affecting the molding thickness of the ground film and the film blowing effect. Summary of the invention

[0006] The purpose of the present invention is to address the above-mentioned problems in the existing technology and to propose a special film blowing machine for fully biodegradable mulch film. The technical problem to be solved by the invention is: how to achieve efficient grinding and mixing of mulch film masterbatch by the film blowing machine and to carry out quantitative and precise delivery.

[0007] The purpose of the present invention can be achieved by the following technical solutions:

[0008] A film blowing machine for fully biodegradable ground film, comprising a fixed frame, a mixing box is fixedly installed inside the fixed frame, and a grinding cylinder is fixedly connected to the top of the mixing box, a feed hopper is fixedly connected to the top of the grinding cylinder, and a grinding feed assembly is installed inside the grinding cylinder, a connecting pipe is fixedly installed at the bottom end of the mixing box, and a feeding pipe is fixedly installed at the bottom end of the connecting pipe, a bracket is fixedly connected to the bottom end of the feeding pipe, a film blowing machine head is connected to one side surface of the feeding pipe, and the film blowing machine head is fixedly installed inside the fixed frame, a lifting mixing assembly is installed inside the mixing box, and a rotating feeding assembly is connected to the inside of the feeding pipe;

[0009] The lifting and mixing assembly includes a rotating rod, and the rotating rod is rotatably connected to the bottom of the mixing box, the rotating rod is driven by a first motor, and the first motor is fixedly installed on the surface of the fixed frame, and the outer wall of the rotating rod is fixedly connected to a plurality of mixing rods;

[0010] The upper part of the rotating rod is connected to a reciprocating screw rod for transmission, and the reciprocating screw rod is rotatably connected to the upper part of the mixing box, and two reciprocating screw rods are arranged in parallel, and the two reciprocating screw rods are connected to each other through a transmission pulley assembly for transmission, and the outer wall of the reciprocating screw rod is connected to a movable block through a ball nut, and the movable block is slidably connected to the inner wall of the mixing box, and the inner part of the movable block is slidably connected to a guide column, and the guide column is fixedly installed on the upper part of the mixing box, and one side of the movable block is rotatably connected to a mounting rod, and the outer wall of the mounting rod is fixedly connected to a gear plate, and the bottom end of the gear plate is meshedly connected to a rack, and the rack is fixedly installed inside the mixing box;

[0011] An incomplete gear is fixedly connected to the outer wall of the mounting rod, the incomplete gear is located on one side of the gear plate, and a gear rod is meshedly connected to the outer wall of the incomplete gear, and the gear rod is arranged inside the movable block;

[0012] The outer wall of the gear rod is sleeved with a telescopic spring, and the bottom end of the telescopic spring is fixedly connected to the surface of the movable block, the top end of the gear rod is fixedly connected to a top plate, and the bottom end of the gear rod is fixedly connected to a bottom plate.

[0013] The working principle of the present invention is as follows: during operation, the masterbatch material is fed through the feed hopper, and under the driving action of the first motor, the first motor drives the rotating rod to rotate, so that the rotating rod drives the mixing rod to rotate below the mixing box. At the same time, under the transmission action of the first synchronous wheel and the second synchronous wheel, the two reciprocating screws rotate synchronously, so that the reciprocating screw drives the movable block to move inside the mixing box, and by rotating the connecting mounting rod on one side of the movable block, under the meshing action of the gear plate and the rack, the movable block simultaneously drives the gear plate to move when moving. The surface of the rack rotates, and at the same time, by fixing an incomplete gear on the surface of the mounting rod, the incomplete gear drives the gear rod to engage and lift, and by arranging a telescopic spring on the outer wall of the gear rod, the gear rod can automatically move upward through the telescopic spring when it is not engaged with the incomplete gear, so that the rotation of the incomplete gear can realize the reciprocating lifting of the gear rod, and by fixing the top plate and the bottom plate at the upper and lower ends of the gear rod, the top plate can divide and limit the material at the bottom of the feed hopper when it is lifted, so that the masterbatch material can enter the grinding cylinder through the dividing hole. The inner wall of the grinding cylinder is fixedly connected to the gear ring. When the electric motor is powered on, the bevel gear rotates and moves on the surface of the gear ring, so that the rolling wheel can fully crush the material inside the grinding cylinder, making it easier for the material to enter the mixing box through the sieve hole. At the same time, the material is mixed by the mixing rod at the bottom of the mixing box. In order to turn over the material at the bottom of the mixing box, the bottom end of the gear rod is fixedly connected to the bottom plate. With the flow hole opened inside the bottom plate, the bottom plate can be lifted by lifting under the mixing rod and leaking through the flow hole, which is conducive to the realization of The efficient mixing of materials inside the mixing box is realized, and the mixing uniformity of the materials is improved. Moreover, by connecting the feeding pipe at the bottom of the mixing box, the chain plate can drive the fixed seat and the turntable to move through the connecting chain under the action of the rotating connecting mounting columns at both ends of the feeding pipe. Under the equidistant action of the fixed seat, quantitative feeding to the film blowing machine head is realized. Moreover, under the action of the spiral groove arranged on the inner wall of the feeding pipe between the connecting pipe and the film blowing machine head, the turntable can rotate synchronously when moving in this section of the feeding pipe, thereby realizing the pushing and extrusion of materials at the rear end and avoiding the adhesion of materials.

[0014] The lower part of the mixing box is arranged in an arc-shaped structure, and the center of the arc of the lower part of the mixing box coincides with the center of the rotating rod;

[0015] The bottom plate is arranged in an arc-shaped structure, and is located below the mixing rod, and a plurality of material passing holes are opened inside the bottom plate.

[0016] With the above structure, by setting the arc shape below the mixing box, the rotating rod can fully mix the material at the bottom of the mixing box when driving the mixing rod to rotate, and under the action of the bottom plate set at the bottom of the mixing rod, the bottom plate can turn the material over and shake the material at the bottom of the mixing rod through the lifting and lowering of the gear rod, thereby ensuring the mixing effect of the material.

[0017] The top plate is located below the feed hopper, and has an inverted "V"-shaped structure, and a plurality of flow holes are opened inside the top plate;

[0018] A material distribution hole is opened and closed through the inner wall of the bottom of the feed hopper, and the material distribution hole is located above the grinding cylinder.

[0019] With the above structure, under the action of the inverted "V"-shaped structure of the top plate below the feed hopper, the gear rod synchronously drives the top plate to move up and down when it is lifted or lowered, so that the top plate limits and blocks the material below the feed hopper, making it convenient for the material inside the feed hopper to enter the grinding cylinder through the dividing holes on both sides, thereby realizing the dividing and limiting of the material from the feed hopper to the inside of the mixing box, so that the material can enter the inside of the mixing box evenly.

[0020] The outer wall of the rotating rod is fixedly connected with a first synchronous wheel, and the first synchronous wheel is located on the outside of the mixing box. The outer wall of the first synchronous wheel is meshedly connected with a synchronous belt, and the top inner wall of the synchronous belt is meshedly connected with a second synchronous wheel, and the second synchronous wheel is fixedly installed on the outer wall of the reciprocating screw.

[0021] By adopting the above structure, through the setting of the first synchronous wheel and the second synchronous wheel, under the transmission action of the synchronous belt, the rotating rod can synchronously drive the reciprocating screw to rotate when it rotates, and under the action of the transmission pulley assembly connected between the two reciprocating screws, the two reciprocating screws can rotate synchronously. Through such a setting, the reciprocating screw can drive the movable block to move synchronously by rotating, so that the movable block drives the gear plate to rotate through the mounting rod, and under the meshing action of the gear plate and the rack, the mounting plate drives the incomplete gear to rotate, thereby realizing the meshing transmission of the incomplete gear driving the gear rod.

[0022] The grinding feed assembly includes a moving block, and the moving block is slidably connected to the inner wall of the grinding cylinder, an electric motor is fixedly installed inside the moving block, and the output end of the electric motor is fixedly connected to a movable rod, a bevel gear is fixedly installed on the outer wall of the movable rod, and the bottom end of the bevel gear is meshedly connected with a gear ring, and the gear ring is fixedly installed on the inner bottom wall of the grinding cylinder;

[0023] The outer end of the movable rod is fixedly connected with a rolling wheel, and the rolling wheel is rotatably connected to the inner bottom wall of the grinding cylinder, and the bottom end of the rolling wheel is closely connected with a sieve hole, and the sieve hole is opened at the bottom end of the grinding cylinder.

[0024] The above structure is adopted, by arranging an electric motor inside the moving block, when the electric motor is energized to drive the movable rod to rotate, the bevel gear rotates and moves on the surface of the gear ring under the meshing action of the bevel gear and the gear ring, and the moving block is slidably connected to the inner wall of the grinding cylinder, thereby ensuring the movement effect of the moving block on the surface of the gear ring with the bevel gear, and through the rotation of the movable rod, under the action of the rolling wheel fixedly connected to the outer wall of the movable rod, the rolling wheel grinds and rolls the masterbatch on the inner wall of the grinding cylinder, so that the material is convenient to feed into the mixing box through the sieve holes. Through such an arrangement, part of the material in the feed hopper is secondary ground inside the grinding cylinder, thereby ensuring the subsequent mixing effect of the material, and realizing multi-directional feeding into the mixing box, which is beneficial to improving the mixing uniformity of the mixing box.

[0025] The grinding cylinder is arranged in a circular tube structure, and the center of the grinding cylinder coincides with the center of the gear ring;

[0026] The interior of the grinding cylinder is provided with a slideway for accommodating the sliding of the moving block, and the slideway is arranged in an annular structure.

[0027] With the above structure, the circular setting of the grinding cylinder facilitates the connection between the grinding cylinder and the feed hopper, and the slideway provided on the inner wall of the grinding cylinder enables the bevel gear to move accurately on the surface of the gear ring, thereby ensuring the rotation and grinding effect of the grinding wheel on the inner wall of the grinding cylinder.

[0028] The rotary feeding assembly includes two mounting posts, which are rotatably connected to the two ends of the feeding pipe, one end of one of the mounting posts is fixedly connected to the output end of the second motor, and the second motor is fixedly mounted on the surface of the bracket;

[0029] The outer wall of the mounting column is fixedly connected with a chain plate, and the outer wall of the chain plate is meshedly connected with a connecting chain. The outer wall of the connecting chain is fixedly installed with a plurality of fixing seats, and the plurality of fixing seats are equidistantly distributed.

[0030] With the above structure, the second motor drives the mounting column to rotate, and under the fixing action of the mounting column and the chain plate, the chain plate drives the fixing seat to move through the connecting chain, so that the mixed material is fed to the bottom of the film blowing machine head through the movement between the two fixing seats.

[0031] A turntable is rotatably connected inside the fixing seat, and the turntable is rotatably connected to the inner wall of the feeding pipe;

[0032] The connecting pipe and the film blowing machine head are fixedly connected to the top of the feeding pipe, and the inner wall of the feeding pipe between the connecting pipe and the film blowing machine head is provided with a spiral groove capable of accommodating the rotation of the turntable, and the spiral groove is arranged in a continuous spiral shape;

[0033] A discharge port is connected to the bottom end of one side of the feeding pipe, and the discharge port is located below the chain plate.

[0034] With the above structure, under the action of the rotating connecting turntable inside the fixed seat, through the spiral setting of the spiral groove, when the fixed seat drives the turntable to move, the turntable rotates synchronously inside the fixed seat, so that the turntable pushes the material at the rear end, ensuring the movement effect of the material inside the feeding pipe, and through the equidistant setting between the two fixed seats, the uniformity and quantitative effect of the material feeding to the film blowing machine head are ensured, which is conducive to achieving uniform film blowing.

[0035] Compared with the prior art, the special film blowing machine for fully biodegradable mulch film of the present invention has the following advantages:

[0036] 1. In the present invention, a lifting and mixing assembly is arranged inside the mixing box, so that the reciprocating screw rod can synchronously drive the gear rod to lift and lower when it rotates, so that the top plate can limit and block the material under the feed hopper, so that the material inside the feed hopper can enter the grinding cylinder through the dividing holes on both sides, thereby realizing the dividing and limiting of the material into the mixing box through the feed hopper. At the same time, under the action of the grinding and feeding assembly arranged inside the grinding cylinder, the movable rod can drive the rolling wheel to rotate through the bevel gear, so that the rolling wheel grinds and rolls the masterbatch on the inner wall of the grinding cylinder, so that the material can be fed into the mixing box through the sieve holes. Through such an arrangement, part of the material in the feed hopper can be secondary ground inside the grinding cylinder, thereby ensuring the subsequent mixing effect of the material, and the transmission effect is good, thereby realizing multi-directional feeding into the mixing box, which is beneficial to improving the mixing uniformity of the mixing box.

[0037] 2. In the present invention, by arranging a rotating feeding assembly at the bottom of the mixing box, the mixed materials inside the mixing box can be accurately fed to the film blowing machine head through the rotating feeding assembly, and under the action of the spiral groove arranged on the inner wall of the feeding pipe between the connecting pipe and the film blowing machine head, the turntable can rotate synchronously when moving in this section of the feeding pipe, thereby realizing the pushing and extrusion of materials at the rear end, avoiding the adhesion of materials, ensuring the uniformity and quantitative effect of feeding materials to the film blowing machine head, and through the rotation connection between the turntable and the fixed seat, the fixed seat can be flexibly rotated when driving the turntable to move, thereby improving the movement flexibility of the turntable in the feeding pipe.

[0038] 3. In the present invention, under the action of the lifting and mixing component, the movable block is moved by rotating the mounting rod on one side of the movable block. Under the meshing action of the gear plate and the rack, the movable block drives the gear plate to rotate on the surface of the rack when moving. At the same time, under the action of the incomplete gear fixedly connected to the surface of the mounting rod, the incomplete gear drives the gear rod to engage and lift. By fixing the bottom plate at the bottom end of the gear rod, the bottom plate can be lifted by lifting under the mixing rod and leak the material through the flow hole, which is conducive to realizing efficient mixing of materials inside the mixing box and improving the mixing uniformity of the materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a structural schematic diagram of a special film blowing machine for fully biodegradable mulch film of the present invention;

[0040] Figure 2 It is a front view structural schematic diagram of a special film blowing machine for fully biodegradable mulch film in the present invention;

[0041] Figure 3 It is a schematic diagram of the structure of the grinding and feeding component and the lifting and mixing component in the present invention;

[0042] Figure 4 The present invention Figure 3 A schematic diagram of the enlarged structure at point A;

[0043] Figure 5 It is a schematic diagram of the cross-sectional structure of the grinding feed assembly in the present invention;

[0044] Figure 6 The present invention Figure 3 A schematic diagram of the enlarged structure at B;

[0045] Figure 7 It is a schematic diagram of the structure of the lifting and mixing assembly in the present invention;

[0046] Figure 8 It is a schematic cross-sectional structure diagram of the lifting and mixing assembly in the present invention;

[0047] Fig. 9 It is a schematic diagram of the cross-sectional structure of the spiral groove and the feeding pipe in the present invention;

[0048] Fig.10 The present invention Figure 2 Schematic diagram of the enlarged structure at C.

[0049] In the figure, 1, fixed frame; 2, mixing box; 3, grinding cylinder; 4, feeding hopper; 5, connecting pipe; 6, feeding pipe; 7, film blowing head; 8, bracket; 9, material distribution hole; 10, moving block; 11, slideway; 12, electric motor; 13, movable rod; 14, bevel gear; 15, rolling wheel; 16, gear ring; 17, sieve hole; 18, rotating rod; 19, mixing rod; 20, first motor; 21, first synchronous wheel; 22, synchronous belt; 23, second synchronous wheel ; 24. Reciprocating screw rod; 25. Drive pulley assembly; 26. Movable block; 27. Guide column; 28. Mounting rod; 29. ​​Gear plate; 30. Rack; 31. Incomplete gear; 32. Gear rod; 33. Telescopic spring; 34. Top plate; 35. Circulation hole; 36. Bottom plate; 37. Material passing hole; 38. Mounting column; 39. Second motor; 40. Chain plate; 41. Connecting chain; 42. Fixed seat; 43. Turntable; 44. Spiral groove; 45. Discharge port. DETAILED DESCRIPTION

[0050] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0051] like Figure 1-Figure 10As shown, a film blowing machine for fully biodegradable ground film includes a fixed frame 1, a mixing box 2, a grinding cylinder 3, a feed hopper 4, a connecting pipe 5, a feeding pipe 6, a film blowing machine head 7, a bracket 8, a material distribution hole 9, a moving block 10, a slide 11, an electric motor 12, a movable rod 13, a bevel gear 14, a rolling wheel 15, a gear ring 16, a sieve hole 17, a rotating rod 18, a mixing rod 19, a first motor 20, a first synchronous wheel 21, a synchronous belt 22, a second synchronous wheel 23, a reciprocating screw rod 24, a transmission pulley assembly 25, a movable block 26, a guide column 27, a mounting rod 28, and a gear plate 29. , rack 30, incomplete gear 31, gear rod 32, telescopic spring 33, top plate 34, circulation hole 35, bottom plate 36, material through hole 37, mounting column 38, second motor 39, chain plate 40, connecting chain 41, fixing seat 42, rotating plate 43, spiral groove 44 and discharge port 45, a mixing box 2 is fixedly installed inside the fixing frame 1, and a grinding cylinder 3 is fixedly connected to the top of the mixing box 2, a feeding hopper 4 is fixedly connected to the top of the grinding cylinder 3, a distributing hole 9 is opened and closed on the bottom inner wall of the feeding hopper 4, and the distributing hole 9 is located above the grinding cylinder 3, and a mixing box 2 is fixedly installed inside the grinding cylinder 3. There is a grinding feed assembly, which is convenient for secondary grinding of the material entering the grinding cylinder 3. At the same time, a connecting pipe 5 is fixedly installed at the bottom end of the mixing box 2, and a feeding pipe 6 is fixedly installed at the bottom end of the connecting pipe 5, so as to realize the feeding of the mixed material. In order to ensure the stability of the feeding pipe 6, a bracket 8 is fixedly connected to the bottom end of the feeding pipe 6, and a film blowing machine head 7 is connected to the surface of one side of the feeding pipe 6, so that the feeding pipe 6 can accurately feed the film blowing machine head 7. In order to achieve the stability of the film blowing machine head 7, the film blowing machine head 7 is fixedly installed inside the fixed frame 1, and the film blowing machine head 7 is fixedly installed inside the fixed frame 1. The head 7 is located at one side of the mixing box 2. At the same time, a lifting and mixing assembly is installed inside the mixing box 2, wherein the lifting and mixing assembly includes a rotating rod 18, and the rotating rod 18 is rotatably connected to the bottom of the mixing box 2, and the rotating rod 18 is driven by a first motor 20. One end of the rotating rod 18 is fixedly connected to the output end of the first motor 20, and the first motor 20 is fixedly installed on the surface of the fixed frame 1, so as to realize the driving of the rotating rod 18, and a plurality of mixing rods 19 are fixedly connected to the outer wall of the rotating rod 18, so that the rotating rod 18 can fully mix the materials inside the mixing box 2 through the mixing rods 19;

[0052] In order to realize the transmission driving effect of lifting and lowering the mixing assembly, a reciprocating screw rod 24 is connected to the upper part of the rotating rod 18. Specifically, a first synchronous wheel 21 is fixedly connected to the outer wall of the rotating rod 18, and the first synchronous wheel 21 is located on the outer side of the mixing box 2. The outer wall of the first synchronous wheel 21 is meshed with a synchronous belt 22, and the top inner wall of the synchronous belt 22 is meshed with a second synchronous wheel 23. The second synchronous wheel 23 is fixedly installed on the outer wall of the reciprocating screw rod 24. By setting the first synchronous wheel 21 and the second synchronous wheel 23, the transmission of the synchronous belt 22 is realized. Under the action, the rotating rod 18 can simultaneously drive the reciprocating screw rod 24 to rotate when rotating, and the reciprocating screw rod 24 is rotatably connected to the top of the mixing box 2, and two reciprocating screw rods 24 are arranged in parallel, and the two reciprocating screw rods 24 are connected through a transmission pulley assembly 25. Under the action of the transmission pulley assembly 25 connected between the two reciprocating screw rods 24, the two reciprocating screw rods 24 are synchronously rotated. At the same time, a movable block 26 is connected to the outer wall of the reciprocating screw rod 24 through a ball nut, and the movable block 26 is slidably connected to the mixing box 2, the inner wall of the movable block 26 is slidably connected with a guide column 27, and the guide column 27 is fixedly installed above the mixing box 2, and the guide column 27 is arranged in parallel with the reciprocating screw rod 24. Through the rotation of the reciprocating screw rod 24, the reciprocating screw rod 24 can drive the movable block 26 to move synchronously. At the same time, a mounting rod 28 is rotatably connected to one side of the movable block 26, and the outer wall of the mounting rod 28 is fixedly connected to a gear plate 29, and the bottom end of the gear plate 29 is meshed and connected with a rack 30, and the rack 30 is fixedly installed on the mixing box 2 Inside, the outer wall of the mounting rod 28 is fixedly connected with an incomplete gear 31, the incomplete gear 31 is located on one side of the gear plate 29, and the outer wall of the incomplete gear 31 is meshedly connected with a toothed rod 32, and the toothed rod 32 is arranged inside the movable block 26. Through such an arrangement, it is convenient for the movable block 26 to drive the gear plate 29 to rotate through the mounting rod 28. Under the meshing action of the gear plate 29 and the rack 30, the mounting rod 28 drives the incomplete gear 31 to rotate, realizing the meshing transmission of the incomplete gear 31 driving the toothed rod 32;

[0053] The toothed bar 32 is provided with a telescopic spring 33 at its outer wall when the incomplete gear 31 is not meshed with the toothed bar 32, and the bottom end of the telescopic spring 33 is fixedly connected to the surface of the movable block 26, so that the toothed bar 32 can automatically move upward through the telescopic spring 33 when it is not meshed with the incomplete gear 31, so that the rotation of the incomplete gear 31 can realize the reciprocating lifting of the toothed bar 32. At the same time, a top plate 34 is fixedly connected to the top of the toothed bar 32, and the top plate 34 is located below the feed hopper 4, and the top plate 34 is an inverted "V"-shaped structure, and a plurality of flow holes 35 are opened inside the top plate 34. Under the action of the inverted "V"-shaped structure of the top plate 34 below the feed hopper 4, the toothed bar 32 is lifted and lowered, and the top plate 34 is limited and blocked below the feed hopper 4, which is convenient for the feed hopper 4 to be filled with water. The material enters the grinding cylinder 3 through the dividing holes 9 on both sides, realizing the dividing and limiting of the material into the mixing box 2 through the feed hopper 4, so that the material can enter the mixing box 2 evenly. At the same time, a bottom plate 36 is fixedly connected to the bottom end of the gear rod 32, and the bottom plate 36 is arranged in an arc-shaped structure, and the bottom plate 36 is located below the mixing rod 19, and a plurality of material passing holes 37 are opened inside the bottom plate 36. The bottom of the mixing box 2 is arranged in an arc-shaped structure, and the center of the arc below the mixing box 2 coincides with the center of the rotating rod 18. By setting the arc below the mixing box 2, the rotating rod 18 can fully mix the material at the bottom of the mixing box 2 when driving the mixing rod 19 to rotate, and under the action of the bottom plate 36 at the bottom of the mixing rod 19, the bottom plate 36 can turn over and shake the material at the bottom of the mixing rod 19 through the lifting and lowering of the gear rod 32, thereby ensuring the mixing effect of the material.

[0054] Furthermore, the grinding feed assembly includes a moving block 10, and the moving block 10 is slidably connected to the inner wall of the grinding cylinder 3. A slideway 11 is provided inside the grinding cylinder 3 to accommodate the sliding of the moving block 10, and the slideway 11 is arranged in an annular structure. The circular arrangement of the grinding cylinder 3 facilitates the connection between the grinding cylinder 3 and the feed hopper 4, and under the action of the slideway 11 provided on the inner wall of the grinding cylinder 3, the moving path of the moving block 10 is ensured. Specifically, an electric motor 12 is fixedly installed inside the moving block 10, and a movable rod 13 is fixedly connected to the output end of the electric motor 12, a bevel gear 14 is fixedly installed on the outer wall of the movable rod 13, and a gear ring 16 is meshingly connected to the bottom end of the bevel gear 14, and the gear ring 16 is fixedly installed on the inner bottom wall of the grinding cylinder 3. The grinding cylinder 3 is arranged in a circular tube structure, and the center of the grinding cylinder 3 coincides with the center of the gear ring 16. By arranging the electric motor 12 inside the moving block 10, when the electric motor 12 is energized to drive the movable rod 13 to rotate, the bevel gear 1 Under the meshing action of the bevel gear 14 and the gear ring 16, the bevel gear 14 is rotated and moved on the surface of the gear ring 16, and the moving block 10 is slidably connected to the inner wall of the grinding cylinder 3, ensuring the moving effect of the moving block 10 on the surface of the gear ring 16 with the bevel gear 14. At the same time, a rolling wheel 15 is fixedly connected to the outer end of the movable rod 13, and the rolling wheel 15 is rotatably connected to the inner bottom wall of the grinding cylinder 3, and the bottom end of the rolling wheel 15 is closely connected to the sieve hole 17, which is opened at the bottom end of the grinding cylinder 3. Through the rotation of the movable rod 13, under the action of the rolling wheel 15 fixedly connected to the outer wall of the movable rod 13, the rolling wheel 15 grinds and rolls the masterbatch on the inner wall of the grinding cylinder 3, so that the material can be fed into the mixing box 2 through the sieve hole 17. Through such an arrangement, part of the material in the feed hopper 4 is subjected to secondary grinding inside the grinding cylinder 3, ensuring the subsequent mixing effect of the material, and realizing multi-directional feeding into the mixing box 2, which is beneficial to improving the mixing uniformity of the mixing box 2.

[0055] In order to achieve quantitative and uniform feeding of the mixed materials, a rotating feeding assembly is connected to the inside of the feeding pipe 6. Specifically, the rotating feeding assembly includes two mounting columns 38, and the two mounting columns 38 are rotatably connected to the two ends of the feeding pipe 6. One end of one of the mounting columns 38 is fixedly connected to the output end of the second motor 39, and the second motor 39 is fixedly installed on the surface of the bracket 8. A discharge port 45 is connected to the bottom end of one side of the feeding pipe 6, and the discharge port 45 is located below the chain disk 40. The outer wall of the mounting column 38 is fixedly connected to the chain disk 40, and the outer wall of the chain disk 40 is meshingly connected to the connecting chain 41. The outer wall of the connecting chain 41 is fixedly installed with a plurality of fixed seats 42, and the plurality of fixed seats 42 are equidistantly distributed. The mounting column 38 is driven to rotate by the second motor 39. Under the fixing action of the mounting column 38 and the chain disk 40, the chain disk 40 drives the fixed seat 42 to move through the connecting chain 41, so that the mixed material moves between the two fixed seats 42 to the blowing direction. The film blowing head 7 is fed below the film blowing head 7. At the same time, in order to ensure the feeding and feeding effect, a turntable 43 is rotatably connected inside the fixed seat 42, and the turntable 43 is rotatably connected to the inner wall of the feeding pipe 6. The connecting pipe 5 and the film blowing head 7 are fixedly connected to the top of the feeding pipe 6, and the inner wall of the feeding pipe 6 between the connecting pipe 5 and the film blowing head 7 is provided with a spiral groove 44 that can accommodate the rotation of the turntable 43. The spiral groove 44 is a continuous spiral arrangement. Through such an arrangement, under the action of the rotating connection turntable 43 inside the fixed seat 42, through the spiral arrangement of the spiral groove 44, when the fixed seat 42 drives the turntable 43 to move, the turntable 43 rotates synchronously inside the fixed seat 42, so that the turntable 43 pushes the material at the rear end, ensuring the movement effect of the material inside the feeding pipe 6, and through the equidistant arrangement between the two fixed seats 42, the uniformity and quantitative effect of the material feeding to the film blowing head 7 are ensured, which is conducive to achieving uniform film blowing.

[0056] The working principle of the present invention is as follows: when in use, the masterbatch material is fed through the feed hopper 4, and under the driving action of the first motor 20, the first motor 20 drives the rotating rod 18 to rotate, so that the rotating rod 18 drives the mixing rod 19 to rotate below the mixing box 2. At the same time, under the transmission action of the first synchronous wheel 21 and the second synchronous wheel 23, the two reciprocating screws 24 are synchronously rotated, so that the reciprocating screw 24 drives the movable block 26 to move inside the mixing box 2, and by rotating the connecting mounting rod 28 on one side of the movable block 26, under the meshing action of the gear plate 29 and the rack 30, the movable block 26 simultaneously drives the gear plate 29 to rotate on the surface of the rack 30 when moving. At the same time, by fixing the incomplete gear 31 on the surface of the mounting rod 28, the incomplete gear 31 drives the toothed rod 32 to engage and lift, and by sleeve-arranging a telescopic spring 33 on the outer wall of the toothed rod 32, the toothed rod 32 can automatically move upward through the telescopic spring 33 when it is not engaged with the incomplete gear 31, so that the rotation of the incomplete gear 31 can realize the reciprocating lifting of the toothed rod 32, and by fixing the top plate 34 and the bottom plate 36 on the upper and lower ends of the toothed rod 32, the top plate 34 can divide and limit the materials at the bottom of the feed hopper 4 when lifting, so that the masterbatch materials can enter the grinding cylinder 3 through the dividing hole 9, and by fixing the gear ring 16 on the inner wall of the grinding cylinder 3, the gear ring 16 can be fixedly connected to the inner wall of the grinding cylinder 3. When the motor 12 is powered, the bevel gear 14 rotates and moves on the surface of the gear ring 16, so that the grinding wheel 15 fully crushes the material inside the grinding cylinder 3, which is convenient for the material to enter the mixing box 2 through the sieve hole 17. At the same time, under the action of mixing the material at the bottom of the mixing box 2 through the mixing rod 19, in order to realize the turning of the material at the bottom of the mixing box 2, the bottom end of the gear rod 32 is fixedly connected to the bottom plate 36, and the bottom plate 36 is provided with a flow hole 35. Under the action of the flow hole 35, the bottom plate 36 can be lifted by lifting under the mixing rod 19, and the material is leaked through the flow hole 35, which is conducive to realizing the efficient mixing of the material inside the mixing box 2, improving the mixing uniformity of the material, and By connecting the feed pipe 6 at the bottom of the mixing box 2, under the action of the rotating connection mounting columns 38 at both ends of the feed pipe 6, the chain plate 40 can drive the fixed seat 42 and the turntable 43 to move through the connecting chain 41. Under the equidistant action of the fixed seat 42, quantitative feeding of the film blowing head 7 is achieved. Moreover, under the action of the spiral groove 44 set on the inner wall of the feed pipe 6 between the connecting pipe 5 and the film blowing head 7, the turntable 43 can rotate synchronously when moving in this section of the feed pipe 6, thereby achieving the pushing and squeezing of the material at the rear end, avoiding the adhesion of the material, and ensuring the uniformity and quantitative effect of the material feeding to the film blowing head 7. In this way, the working principle of the film blowing machine dedicated to the fully biodegradable mulch film is completed.

[0057] In summary, in the present invention, by arranging a lifting and mixing assembly inside the mixing box 2, the reciprocating screw rod 24 can simultaneously drive the gear rod 32 to lift and lower when rotating, so that the top plate 34 can limit and block the material below the feed hopper 4, so that the material inside the feed hopper 4 can enter the grinding cylinder 3 through the dividing holes 9 on both sides, thereby realizing the material distribution and limiting of the material into the mixing box 2 through the feed hopper 4. At the same time, under the action of the grinding and feeding assembly arranged inside the grinding cylinder 3, the movable rod 13 can drive the rolling wheel 15 to rotate through the bevel gear 14. , so that the rolling wheel 15 grinds and grinds the masterbatch on the inner wall of the grinding cylinder 3, making it convenient for the material to be fed into the mixing box 2 through the sieve hole 17. Through such an arrangement, part of the material inside the feed hopper 4 is subjected to secondary grinding inside the grinding cylinder 3, ensuring the subsequent mixing effect of the material, and having a good transmission effect, realizing multi-directional feeding into the mixing box 2, which is beneficial to improving the mixing uniformity of the mixing box 2, and solving the technical problem that the current film blowing machine is unable to efficiently grind and mix the ground film masterbatch and to carry out quantitative and precise transportation.

[0058] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A film blowing machine for fully biodegradable ground film, comprising a fixed frame (1), characterized in that: A mixing box (2) is fixedly installed inside the fixed frame (1), and a grinding cylinder (3) is fixedly connected to the top of the mixing box (2), a feed hopper (4) is fixedly connected to the top of the grinding cylinder (3), and a grinding feed assembly is installed inside the grinding cylinder (3), a connecting pipe (5) is fixedly installed at the bottom end of the mixing box (2), and a feeding pipe (6) is fixedly installed at the bottom end of the connecting pipe (5), a bracket (8) is fixedly connected to the bottom end of the feeding pipe (6), a film blowing machine head (7) is connected to one side surface of the feeding pipe (6), and the film blowing machine head (7) is fixedly installed inside the fixed frame (1), a lifting mixing assembly is installed inside the mixing box (2), and a rotating feeding assembly is connected to the inside of the feeding pipe (6); The lifting and mixing assembly comprises a rotating rod (18), and the rotating rod (18) is rotatably connected to the bottom of the mixing box (2), the rotating rod (18) is driven by a first motor (20), and the first motor (20) is fixedly mounted on the surface of the fixed frame (1), and the outer wall of the rotating rod (18) is fixedly connected to a plurality of mixing rods (19); A reciprocating screw rod (24) is transmission-connected above the rotating rod (18), the reciprocating screw rod (24) is rotationally connected to the top of the mixing box (2), two reciprocating screw rods (24) are arranged in parallel, and the two reciprocating screw rods (24) are transmission-connected via a transmission pulley assembly (25), the outer wall of the reciprocating screw rod (24) is connected to a movable block (26) via a ball nut, the movable block (26) is slidably connected to the inner wall of the mixing box (2), the inside of the movable block (26) is slidably connected to a guide column (27), and the guide column (27) is fixedly installed above the mixing box (2), one side of the movable block (26) is rotationally connected to a mounting rod (28), and the outer wall of the mounting rod (28) is fixedly connected to a gear plate (29), the bottom end of the gear plate (29) is meshingly connected to a rack (30), and the rack (30) is fixedly installed inside the mixing box (2); An incomplete gear (31) is fixedly connected to the outer wall of the mounting rod (28), the incomplete gear (31) is located on one side of the gear plate (29), and a gear rod (32) is meshingly connected to the outer wall of the incomplete gear (31), and the gear rod (32) is arranged to penetrate the interior of the movable block (26); The outer wall of the gear rod (32) is sleeved with a telescopic spring (33), and the bottom end of the telescopic spring (33) is fixedly connected to the surface of the movable block (26), the top end of the gear rod (32) is fixedly connected to a top plate (34), and the bottom end of the gear rod (32) is fixedly connected to a bottom plate (36).

2. The film blowing machine for fully biodegradable mulch film according to claim 1, characterized in that: The lower part of the mixing box (2) is arranged in an arc-shaped structure, and the center of the arc of the lower part of the mixing box (2) coincides with the center of the rotating rod (18); The bottom plate (36) is arranged in an arc-shaped structure, and the bottom plate (36) is located below the mixing rod (19), and a plurality of material passage holes (37) are provided inside the bottom plate (36).

3. The film blowing machine for fully biodegradable mulch film according to claim 1, characterized in that: The top plate (34) is located below the feed hopper (4), and the top plate (34) is in an inverted "V"-shaped structure, and a plurality of flow holes (35) are provided inside the top plate (34); A material distribution hole (9) is opened and closed through the inner wall of the bottom of the feed hopper (4), and the material distribution hole (9) is located above the grinding cylinder (3).

4. The film blowing machine for fully biodegradable mulch film according to claim 2, characterized in that: The outer wall of the rotating rod (18) is fixedly connected to a first synchronous wheel (21), and the first synchronous wheel (21) is located outside the mixing box (2); the outer wall of the first synchronous wheel (21) is meshedly connected to a synchronous belt (22), and the top inner wall of the synchronous belt (22) is meshedly connected to a second synchronous wheel (23), and the second synchronous wheel (23) is fixedly mounted on the outer wall of the reciprocating screw rod (24).

5. The film blowing machine for fully biodegradable mulch film according to claim 1, characterized in that: The grinding feed assembly comprises a moving block (10), and the moving block (10) is slidably connected to the inner wall of the grinding cylinder (3), an electric motor (12) is fixedly installed inside the moving block (10), and the output end of the electric motor (12) is fixedly connected to a movable rod (13), a bevel gear (14) is fixedly installed on the outer wall of the movable rod (13), and the bottom end of the bevel gear (14) is meshingly connected to a gear ring (16), and the gear ring (16) is fixedly installed on the inner bottom wall of the grinding cylinder (3); The outer end of the movable rod (13) is fixedly connected to a rolling wheel (15), and the rolling wheel (15) is rotatably connected to the inner bottom wall of the grinding cylinder (3), and the bottom end of the rolling wheel (15) is fittedly connected to a sieve hole (17), and the sieve hole (17) is opened at the bottom end of the grinding cylinder (3).

6. The film blowing machine for fully biodegradable mulch film according to claim 5, characterized in that: The grinding cylinder (3) is arranged in a circular tubular structure, and the center of the grinding cylinder (3) coincides with the center of the gear ring (16); The grinding cylinder (3) is provided with a slideway (11) inside which the moving block (10) can slide, and the slideway (11) is arranged in an annular structure.

7. The film blowing machine for fully biodegradable mulch film according to claim 1, characterized in that: The rotary feeding assembly comprises two mounting columns (38), the two mounting columns (38) are rotatably connected to the two ends of the feeding tube (6), one end of one of the mounting columns (38) is fixedly connected to the output end of the second motor (39), and the second motor (39) is fixedly mounted on the surface of the bracket (8); The outer wall of the mounting column (38) is fixedly connected to a chain plate (40), and the outer wall of the chain plate (40) is meshingly connected to a connecting chain (41), and the outer wall of the connecting chain (41) is fixedly mounted with a plurality of fixing seats (42), and the plurality of fixing seats (42) are equidistantly distributed.

8. The film blowing machine for fully biodegradable mulch film according to claim 7, characterized in that: A turntable (43) is rotatably connected inside the fixed seat (42), and the turntable (43) is rotatably connected to the inner wall of the feeding pipe (6); The connecting pipe (5) and the film blowing head (7) are fixedly connected to the top of the feeding pipe (6), and the inner wall of the feeding pipe (6) between the connecting pipe (5) and the film blowing head (7) is provided with a spiral groove (44) capable of accommodating the rotation of the turntable (43), and the spiral groove (44) is arranged in a continuous spiral shape; A discharge port (45) is connected to a bottom end of one side of the feed pipe (6), and the discharge port (45) is located below the chain plate (40).

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