A forming device for plastic bottle made of plastic recycling

Abstract

The present application relates to the field of recycling plastic to prepare plastic bottles, and more particularly to a plastic recycling and preparing plastic bottle forming device. The device comprises a recycling assembly for melting and mixing waste plastics, a discharging assembly arranged on the recycling assembly and used for pushing the melted plastics to discharge quantitatively, a conveying assembly arranged at the lower part of the recycling assembly and used for conveying materials, a mold assembly used for preparing plastic bottles, and a pressurizing assembly. The conveying assembly is used for conveying the mold assembly loaded with the melted plastics to the lower part of the pressurizing assembly. The pressurizing assembly comprises a pressurizing pipe capable of moving linearly along its own axis and capable of rotating around its own axis. A plurality of pressurizing holes are uniformly distributed on the outer wall of the pressurizing pipe. The plurality of pressurizing holes are arranged in a staggered manner in the vertical direction. A pipe for conveying high-pressure air is inserted into the mold for forming plastic bottles. The melted plastics for recycling and reuse in the mold are uniformly pressurized from all around and the lower part under rotation, so that the plastic bottles are uniformly formed.

Description

TECHNICAL FIELD

[0001] The application relates to the field of recycling plastic to prepare plastic bottles, in particular to a forming device for recycling plastic to prepare plastic bottles. BACKGROUND

[0002] The use of plastic products is extremely wide in modern society, covering multiple fields, including daily life, industrial production, medical treatment, agriculture, transportation and the like. The products become an indispensable part of modern society due to their lightness, durability, low cost and the like. However, the wide application of plastic products also brings serious environmental problems, so solving the environmental pollution caused by plastics becomes a top priority, and waste plastic recycling becomes an important direction to solve plastic pollution; plastic recycling is a process of reprocessing waste plastics into new products through physical, chemical or biological methods, aiming to reduce environmental pollution, save resources and reduce carbon emissions. The process involves multiple stages, including collection, classification, cleaning, crushing, granulation and recycling, and how to quickly disperse the recycled plastics becomes an important problem in plastic recycling. Among plastic products, plastic bottles are widely used in food, beverage, cosmetics, medicine and other industries due to their lightness, corrosion resistance and transparency, so recycling waste plastics to prepare plastic bottles is a good recycling direction. Because of the wide application of plastics, they can be quickly sold to recover funds and avoid the accumulation of recycled plastics. However, when preparing plastic bottles, the existing blow molding method cannot uniformly fill high-pressure air in the mold for uniform molding of plastic bottles. SUMMARY

[0003] To optimize the deficiencies of the prior art, the application provides a forming device for recycling plastic to prepare plastic bottles, which can uniformly pressurize the recycled and reused molten plastic in the mold into a cup shape under rotation from all around and the lower part, so as to uniformly form plastic bottles.

[0004] The technical scheme adopted by the application to solve the technical problems is:

[0005] The application discloses a forming device for plastic bottle recycling and preparation, which comprises a recycling assembly for melting and mixing waste plastics, a discharging assembly arranged on the recycling assembly and used for pushing and quantitatively discharging the melted plastics, a conveying assembly arranged at the lower part of the recycling assembly and used for conveying materials, a mold assembly for preparing plastic bottles, and a pressurizing assembly.

[0006] Further, the recycling assembly comprises a mixing barrel, the lower part of the mixing barrel is provided with a converging pipe, the upper part of the mixing barrel is fixedly connected with an upper frame, the middle part of the upper frame is rotatably connected with a middle pipe, the outer wall of the middle pipe is provided with a plurality of spiral blades, the upper part of the middle pipe is fixedly connected with a first gear, and the upper frame is rotatably connected with a second gear used for driving the first gear to rotate.

[0007] The lower part of the inner wall of the middle pipe is provided with a positioning plate, the upper part of the inner wall of the middle pipe is threadedly connected with a pressing plate, a sleeve is arranged between the positioning plate and the pressing plate, the lower part of the sleeve is provided with a lower plate abutting against the upper part of the positioning plate, the upper part of the sleeve is threadedly connected with an upper plate, the upper plate is fixedly connected with two first air cylinders, the cylinder rods of the two first air cylinders are fixedly connected with a plug pipe upper cover, the lower part of the plug pipe upper cover is threadedly connected with a plug pipe, the lower part of the plug pipe is slidably connected with a plug rod, the plug pipe upper cover is fixedly connected with a second air cylinder used for driving the plug rod to slide, and the middle part of the upper plate is provided with a through hole used for accommodating the second air cylinder.

[0008] Further, the outer wall diameter of the plug pipe is the same as the inner wall diameter of the converging pipe.

[0009] Further, the application further comprises a mounting pipe fixedly connected with the converging pipe, the mounting pipe is provided with an L-shaped frame, the lower part of the mounting pipe is fixedly connected with a limiting frame, the L-shaped frame is fixedly connected with a third air cylinder, the cylinder rod of the third air cylinder is fixedly connected with a cutting plate slidably connected with the limiting frame, and the free end of the cutting plate is provided with a V-shaped groove.

[0010] Further, the mold assembly comprises a bottom pipe, the bottom pipe is provided with a fixed mold, the upper part of the fixed mold is fixedly connected with two first rods, the two first rods are slidably connected with a movable mold, the end part of each first rod is provided with a spring used for pushing the movable mold to abut against the fixed mold, the lower part of each fixed mold is fixedly connected with two second rods, the lower part of the movable mold is provided with through holes corresponding to the two second rods, and the middle part of the fixed mold and the movable mold is provided with a forming cavity used for forming a plastic bottle when the fixed mold and the movable mold abut against each other.

[0011] Further, the conveying assembly comprises two synchronous wheels and a chassis mounting the two synchronous wheels, the two synchronous wheels are driven by a synchronous belt, and a plurality of conveying holes for placing the bottom pipes are arranged on the synchronous belt.

[0012] Further, the synchronous wheel is a straight gear, and the synchronous belt is a toothed synchronous belt arranged to mesh with the straight gear of the synchronous wheel.

[0013] Further, the chassis is fixedly connected with a support plate corresponding to the pressurizing pipe in the up-down direction.

[0014] Further, the support plate is fixedly connected with a side frame, two lead screws are rotatably connected to the side frame, a lead screw nut is connected to each lead screw, two lead screw nuts are fixedly connected with a lifting plate, a rotary frame is rotatably connected to the lifting plate, the pressurizing pipe is fixedly connected to the rotary frame, a third gear is fixedly connected to the rotary frame, and a fourth gear is rotatably connected to the lifting plate to drive the third gear to rotate.

[0015] Further, the upper frame is fixedly connected with two fourth air cylinders, cylinder rods of the two fourth air cylinders are fixedly connected with a ring plate, the ring plate is slidably connected with the mixing barrel and the middle pipe, threaded holes are arranged on the ring plate, and a material adding cover is connected to the threaded holes of the ring plate.

[0016] The plastic recycling forming device for preparing plastic bottles has the advantages that the pipe conveying high-pressure air is inserted into the mold for forming plastic bottles, and the recycled and processed cup-shaped molten plastic in the mold is uniformly pressurized from the periphery and the lower part under rotation, so that the plastic bottles are uniformly formed; the molten plastic pressed into a cup shape can be quantitatively discharged and pushed into the mold, which pre-processes the subsequent pressurized plastic bottles and accelerates the preparation speed of the plastic bottles; the mold can be quickly disassembled and placed to quickly form and discharge the plastic bottles, which accelerates the preparation speed of the plastic bottles. BRIEF DESCRIPTION OF DRAWINGS

[0017] The application will be further described in detail below with reference to the drawings and specific implementation methods.

[0018] Figure 1 FIG. 1 is a structural schematic view of a plastic recycling forming device for preparing plastic bottles;

[0019] Figure 2 FIG. 3 is a structural schematic view of stirring molten plastic mixture;

[0020] Figure 3 FIG. 5 is a schematic view of pushing plastic discharge;

[0021] Figure 4 FIG. 7 is a structural schematic view of quantitatively pushing plastic discharge;

[0022] Figure 5 FIG. 9 is a position schematic view of the structure in the middle pipe;

[0023] Figure 6 Schematic diagram of the position of the plug pipe and the plug rod;

[0024] Figure 7 Schematic diagram of the structure of the plug rod;

[0025] Figure 8 Schematic diagram of the structure of the sealing converging pipe;

[0026] Figure 9 Schematic diagram of the structure of the transportation mold assembly;

[0027] Figure 10 Schematic diagram of the structure of the mold assembly;

[0028] Figure 11 Schematic diagram of the transportation mold assembly for the pressurized forming of a plastic bottle;

[0029] Figure 12 Schematic diagram of the structure of the pressurized plastic forming into a plastic bottle;

[0030] Figure 13 Schematic diagram of the structure of the driving of the rotation of the pressurizing pipe;

[0031] Figure 14 Schematic diagram of the structure of the pressurizing pipe and the reducing pipe.

[0032] In the figure: the base frame 11; the positioning frame 12; the mixing barrel 13; the converging pipe 14; the synchronous wheel 15; the synchronous belt 16; the transportation hole 17; the support plate 18; the side frame 19; the upper frame 21; the fourth air cylinder 22; the ring plate 23; the material adding cover 24; the middle pipe 31; the helical blade 32; the first gear 33; the second gear 34; the positioning plate 35; the pressing plate 36; the sleeve pipe 41; the lower plate 42; the upper plate 43; the first air cylinder 44; the plug pipe upper cover 45; the plug pipe 46; the second air cylinder 47; the plug rod 48; the mounting pipe 51; the limiting frame 52; the L-shaped frame 53; the third air cylinder 54; the cutting plate 55; the V-shaped groove 56; the bottom pipe 61; the fixed mold 62; the first rod 63; the spring 64; the second rod 65; the movable mold 66; the lead screw 71; the lead screw nut 72; the lifting plate 73; the rotary frame 74; the pressurizing pipe 75; the reducing pipe 76; the third gear 81; the fourth gear 82. DETAILED DESCRIPTION

[0033] Reference Figure 1 , 11 , 12, 13 and 14, the embodiment of recycling waste plastics to prepare plastic bottles is described in detail:

[0034] The application discloses a forming device for plastic bottle recycling and preparation, which comprises a recycling assembly for melting and mixing waste plastics and a discharging assembly arranged on the recycling assembly and used for pushing the melted plastics to be quantitatively discharged, a lower part of the recycling assembly is provided with a conveying assembly used for conveying materials, the conveying assembly conveys a mold assembly used for preparing plastic bottles, the mold assembly conveyed by the conveying assembly is intermittently stopped below the recycling assembly, the conveying assembly conveys the mold assembly loaded with the melted plastics to below a pressurizing assembly, the pressurizing assembly comprises a pressurizing pipe 75 which can move linearly along an axis of the pressurizing pipe 75 and can rotate around the axis of the pressurizing pipe 75, a plurality of pressurizing holes are uniformly distributed on an outer wall of the pressurizing pipe 75, the plurality of pressurizing holes are arranged in a staggered mode in a vertical direction, an upper part of the pressurizing pipe 75 is rotationally connected with a reducing pipe 76, an upper part of the reducing pipe 76 has a larger diameter than a lower part of the reducing pipe 76, and the reducing pipe 76 is communicated with an output pipe of an air compressor.

[0035] The waste plastics are added into the recycling assembly to be processed, the recycling assembly is externally sleeved with a heating assembly, the heating assembly is communicated with a heating furnace, high-temperature steam is circulated and supplied into the heating assembly through the heating furnace, the waste plastics are melted through heat exchange with the high-temperature steam, the temperature of the high-temperature steam is usually 350 DEG C to 800 DEG C, the melting temperature of the plastics is usually less than 300 DEG C, so that the plastics can be fully melted; the melted waste plastics can be added with other materials to modify the plastics, the plastics raw materials are fully mixed through stirring, and the melted plastics are discharged through the lower part of the recycling assembly.

[0036] The melted plastics fall into the mold assembly in the lower part to be loaded, the mold assembly is used for forming plastic bottles, the mold assembly is transported through the timed movement of the conveying assembly, when the conveying assembly is intermittent, the mold assembly can be installed on the conveying assembly, or the mold assembly loaded with the processed plastics can be discharged after the plastics in the mold assembly are processed and formed into plastic bottles; during the transportation of the mold assembly by the conveying assembly, the mold assembly can be accurately positioned below the recycling assembly to quantitatively load the melted plastics, and then the mold assembly loaded with the melted plastics is transported to below the pressurizing pipe 75.

[0037] The middle part of the plastic raw material is driven into the mold assembly by the pressurizing pipe 75, high pressure air is supplied into the variable diameter pipe 76 by the external air compressor, the high pressure air flows into the pressurizing pipe 75 through the variable diameter pipe 76, the lower part of the pressurizing pipe 75 is provided with a through hole, the external pressurizing hole and the lower through hole of the pressurizing pipe 75 are used for external pressurization, balanced pressurization is carried out in the mold assembly, and the plastic bottle is formed; meanwhile, the pressurizing pipe 75 is driven to rotate around the axis, so that the multiple pressurizing holes on the outer wall of the pressurizing pipe 75 can fully output high pressure air to the surrounding under rotation, preventing the pressure applied to the surrounding by the multiple pressurizing holes from being uneven when the high pressure air is output, affecting the preparation of the plastic bottle, and ensuring that the plastic is recycled to prepare a plastic bottle; the variable diameter pipe 76 can ensure that the high pressure air provided by the air compressor can be output from the pressurizing pipe 75 after transportation, can ensure the pressure provided, can ensure the pressure of the high pressure air by the change that the diameter of the upper part of the variable diameter pipe 76 is greater than the diameter of the lower part, can achieve the effect of pressing the plastic bottle, can prevent the high pressure air provided by the air compressor from being insufficient, and can ensure that the pressure of the high pressure air is sufficient, and when different plastic bottles are pressed, different pressures are required, by selecting a low pressure air compressor, a pressure of 10 Kg can be provided, which is suitable for pressing plastic bottles with a capacity of less than 2 liters, a medium-high pressure air compressor can also be selected, which can provide a pressure of 3.7-4 MPa, which is suitable for pressing large-capacity plastic bottles; a suitable air compressor among the low pressure air compressor, the medium-high pressure air compressor and the high pressure air compressor can also be selected according to different plastic materials to prepare the plastic bottle.

[0038] Reference Figure 1 、 2 , 4, 5, 6 and 7, the embodiments of recycling waste plastics are described in detail:

[0039] The recycling assembly comprises a mixing barrel 13, the lower part of the mixing barrel 13 is provided with a converging pipe 14, the upper part of the mixing barrel 13 is fixedly connected with an upper frame 21, the middle part of the upper frame 21 is rotatably connected with a middle pipe 31, the outer wall of the middle pipe 31 is fixedly connected with a plurality of spiral blades 32, the upper part of the middle pipe 31 is fixedly connected with a first gear 33, the upper frame 21 is rotatably connected with a second gear 34 which drives the first gear 33 to rotate, the upper frame 21 is fixedly connected with a first motor which drives the second gear 34 to rotate; when it is needed to stir the melted waste plastics, the first motor is started, the first motor drives the second gear 34 to rotate, the second gear 34 drives the first gear 33 to rotate, the first gear 33 drives the middle pipe 31 to rotate, the middle pipe 31 drives the plurality of spiral blades 32 to rotate, the plurality of spiral blades 32 drives the melted plastics to move, so that the dispersion of the waste plastics recycling and reuse is realized, the properties of the recycled plastics are uniform, and the quality of the waste plastics reused to prepare plastic bottles is ensured; the first motor is controlled by the electronic elements commonly used in the prior art, so that the first motor can be started and stopped according to the use requirement;

[0040] The lower part of the inner wall of the middle pipe 31 is provided with a positioning plate 35, the upper part of the inner wall of the middle pipe 31 is threadedly connected with a pressing plate 36, the positioning plate 35 and the pressing plate 36 are provided with a sleeve pipe 41, the lower part of the sleeve pipe 41 is provided with a lower plate 42 which is attached to the upper part of the positioning plate 35, the upper part of the sleeve pipe 41 is threadedly connected with an upper plate 43, the upper plate 43 is fixedly connected with two first air cylinders 44, the cylinder rods of the two first air cylinders 44 are fixedly connected with a plug pipe upper cover 45, the lower part of the upper cover 45 is threadedly connected with a plug pipe 46, the lower part of the plug pipe 46 is slidably connected with a plug rod 48, the upper cover 45 is fixedly connected with a second air cylinder 47 which drives the plug rod 48 to slide, the middle part of the upper plate 43 is provided with a through hole which accommodates the second air cylinder 47.

[0041] The positioning plate 35 of the lower part of the inner wall of the middle pipe 31 is used for positioning the position of the installed lower plate 42, the diameter of the lower plate 42 is the same as the diameter of the inner wall of the middle pipe 31, so that the stability of the lower plate 42 is ensured and the shaking of the lower plate 42 is prevented, the pressing plate 36 can position the structure composed of the sleeve pipe 41, the lower plate 42 and the upper plate 43, so that the sleeve pipe 41, the lower plate 42 and the upper plate 43 cannot move in the vertical direction, when the mixed material is finished, the plug pipe 46 coincides with the converging pipe 14, the plug pipe 46 blocks the converging pipe 14, so that the mixed plastics cannot flow into the converging pipe 14 and cannot be fully mixed, the plug rod 48 extends relative to the plug pipe 46;

[0042] When the plastic needs to be discharged, the two first air cylinders 44 are started, the cylinder rods of the two first air cylinders 44 drive the plug pipe upper cover 45 to rise, the plug pipe upper cover 45 drives the plug pipe 46 to rise, the plug pipe 46 loses the plugging of the collection pipe 14, so that the molten plastic can be ensured to fall into the collection pipe 14 and the plug rod 48 below for quantitative discharge. When the plastic needs to be discharged, the two first air cylinders 44 are started, the cylinder rods of the two first air cylinders 44 drive the plug pipe upper cover 45 to descend, the plug pipe upper cover 45 drives the plug pipe 46 and the second air cylinder 47 to rise and fall, the extension and retraction of the cylinder rod of the second air cylinder 47 can drive the plug rod 48 to move relative to the plug pipe 46, so as to adjust the extension length of the plug rod 48 relative to the plug pipe 46, so as to drive the plug pipe 46 and the plug rod 48 to push the plastic in the collection pipe 14 synchronously for quantitative discharge, so as to ensure that the recycled waste plastic is discharged quantitatively for the processing of plastic bottles of the same specification. After the discharge, the second air cylinder 47 is started first to drive the plug rod 48 to retract relative to the plug pipe 46, and the plug pipe 46 blocks the plastic to ensure the separation of the plug rod 48 and the discharged plastic, and then the two first air cylinders 44 are started to drive the plug pipe upper cover 45 to reset, and then the plug pipe upper cover 45 drives the plug pipe 46 and the second air cylinder 47 to reset, preparing for the next quantitative discharge of the plastic. The first air cylinder 44 and the second air cylinder 47 are controlled by the electronic elements commonly used in the prior art, so as to ensure that the first air cylinder 44 and the second air cylinder 47 can be started and closed according to the needs of use, and the output and retraction of the cylinder rod are controlled.

[0043] Reference Figure 4 , detailed description of the embodiment of the quantitative material discharge:

[0044] The outer wall diameter of the plug pipe 46 is the same as the inner wall diameter of the collection pipe 14, so that the plug pipe 46 can be extended into the collection pipe 14 to plug the collection pipe 14, and the molten plastic can be controlled by the separation and coincidence of the plug pipe 46 and the collection pipe 14.

[0045] Reference Figure 8 , detailed description of the embodiment of the quantitative material discharge:

[0046] Further comprising a mounting pipe 51 fixedly connected to the collection pipe 14, an L-shaped bracket 53 is arranged on the mounting pipe 51, a limiting frame 52 is fixedly connected to the lower part of the mounting pipe 51, a third air cylinder 54 is fixedly connected to the L-shaped bracket 53, a cutting plate 55 in sliding connection with the limiting frame 52 is fixedly connected to the cylinder rod of the third air cylinder 54, and a V-shaped groove 56 is arranged at the free end of the cutting plate 55.

[0047] When the mixed molten plastic is mixed, at this time the cylinder rod of the third cylinder 54 is in the extended state, the cylinder rod of the third cylinder 54 drives the cutoff plate 55 to abut against the lower end of the converging pipe 14 in the limiting frame 52, so as to form a cup-shaped container with the converging pipe 14 and the cutoff plate 55, for the quantitative feeding of the molten plastic, when the upper part of the converging pipe 14 is blocked by the blocking pipe 46, the plug rod 48 is synchronously driven to extend, and the molten plastic in the converging pipe 14 is extruded into a cup-shaped container with a blind hole arranged in the middle, so as to facilitate subsequent press forming processing of the quantitative molten plastic. When feeding, the cylinder rod of the third cylinder 54 is started to reset, and the cylinder rod of the third cylinder 54 drives the cutoff plate 55 to retract, so that the feeding of the plastic can be carried out;

[0048] When the feeding is completed, after the blocking pipe 46 and the plug rod 48 are reset into the converging pipe 14, the third cylinder 54 is started, the cylinder rod of the third cylinder 54 drives the cutoff plate 55 to slide into the limiting frame 52 to re-block the lower end of the converging pipe 14, and prepare for the next quantitative feeding of the plastic, and the V-shaped groove 56 is arranged so that the free end of the cutoff plate 55 is a blade, which can scrape and clean the excess plastic residue at the lower end of the converging pipe 14, and can also prevent the plastic residue in the limiting frame 52 from affecting the sliding of the cutoff plate 55.

[0049] Reference Figure 1 、 9 , 10 and 11, the embodiment of the pressurized molten plastic in the mold assembly is described in detail:

[0050] The mold assembly comprises a bottom pipe 61, the bottom pipe 61 is provided with a fixed mold 62, the upper part of the fixed mold 62 is fixedly connected with two first rods 63, the two first rods 63 are slidably connected with a movable mold 66, the end of each first rod 63 is provided with a spring 64 for driving the movable mold 66 to abut against the fixed mold 62, the lower part of each fixed mold 62 is fixedly connected with two second rods 65, the lower part of the movable mold 66 is provided with through holes corresponding to the two second rods 65, and the fixed mold 62 and the movable mold 66 are provided with a forming cavity for forming a plastic bottle in the middle part when they are abutted.

[0051] The bottom pipe 61 is cup-shaped, and the movable mold 66 and the fixed mold 62 can be stably and smoothly placed without deviation and shaking. Therefore, when the spring 64 pushes the movable mold 66 to adhere to the fixed mold 62, the movable mold 66 and the fixed mold 62 are placed in the bottom pipe 61 after cooperation to be constrained, so that the plastic in the movable mold 66 and the fixed mold 62 does not separate due to the application of pressure when the plastic bottle is formed. After the plastic bottle is formed, the movable mold 66 and the fixed mold 62 are separated from the bottom pipe 61, and then the movable mold 66 is manually pulled to compress the spring 64, and the formed plastic bottle is taken out. Then, the movable mold 66 is loosened, and the movable mold 66 is pushed to adhere to the fixed mold 62 under the pushing of the compressed spring 64, so as to prepare for the next formation of the plastic bottle. The two second rods 65 can increase the accuracy when the movable mold 66 and the fixed mold 62 adhere, and ensure the yield of the formed plastic bottle.

[0052] Reference Figure 1 、 9 and 11, which will be described in detail below:

[0053] The transportation assembly includes two synchronous wheels 15 and a chassis 11 on which the two synchronous wheels 15 are mounted. The two synchronous wheels 15 are driven by a synchronous belt 16, and the synchronous belt 16 is provided with a plurality of transportation holes 17 for placing the bottom pipes 61. The chassis 11 is fixedly connected with a positioning frame 12, and the mixing barrel 13 is fixedly connected to the positioning frame 12. The synchronous wheel 15 away from the positioning frame 12 is fixedly connected to the output shaft of a second motor, and the second motor is fixedly connected to the chassis 11.

[0054] When the second motor is started, the output shaft of the second motor drives the fixedly connected synchronous wheel 15 to rotate. The synchronous wheel 15 cooperates with the other synchronous wheel 15 to drive the synchronous belt 16 to move. The transportation holes 17 on the synchronous belt 16 are used for placing the bottom pipes 61 to realize the transportation of the mold assembly. The second motor is controlled by the electronic components commonly used in the prior art to ensure that the second motor can be started and stopped as needed. Therefore, the number of rotations of the output shaft of the second motor is controlled, the number of rotations of the synchronous wheel 15 is controlled, and the transportation distance of the synchronous belt 16 is controlled, thereby realizing the periodic transportation of the mold assembly in the plurality of transportation holes 17 on the synchronous wheel 15.

[0055] Reference Figure 11 , which will be described in detail below:

[0056] The synchronous wheel 15 is a straight gear, and the synchronous belt 16 is a toothed synchronous belt provided with straight teeth meshing with the synchronous wheel 15, so that the toothed synchronous belt can be transported by the teeth of the synchronous wheel 15, and the accuracy of the movement distance of the synchronous belt 16 can be increased. Compared with the synchronous belt relying on friction force for transportation, the accuracy is better, the position of the mold assembly transported on the synchronous belt 16 can be ensured, the molten plastic can be accurately discharged into the mold assembly stopped below the converging pipe 14, and the mold assembly loaded with plastic can be accurately stopped below the pressurizing pipe 75. After the pressurizing pipe 75 is driven, it extends into the cup-shaped plastic in the mold assembly to pressurize, and the processing of the plastic bottle is completed.

[0057] With reference to Figure 11 and 12 , the embodiments of supporting the mold assembly to stably perform the forming processing of the plastic bottle are described in detail:

[0058] The chassis 11 is fixedly connected with a support plate 18 corresponding to the pressurizing pipe 75 in the up-down direction, so that the mold assembly transported to the upper part is supported by the support plate 18, and the plastic bottle is formed when the pressurizing pipe 75 applies pressure to the movable mold 66 and the fixed mold 62.

[0059] With reference to Figure 1 、 12 , 13 and 14, the embodiments of driving the pressurizing pipe 75 to move and cooperate with the mold assembly to form the plastic bottle are described in detail.

[0060] The support plate 18 is fixedly connected with a side frame 19, the side frame 19 is rotatably connected with two lead screws 71, each lead screw 71 is connected with a lead screw nut 72, the two lead screw nuts 72 are fixedly connected with a lifting plate 73, the lifting plate 73 is rotatably connected with a rotary frame 74, the pressurizing pipe 75 is fixedly connected to the rotary frame 74, the rotary frame 74 is fixedly connected with a third gear 81, and the lifting plate 73 is rotatably connected with a fourth gear 82 driving the third gear 81 to rotate. The two lead screws 71 are respectively fixedly connected to the output shafts of the corresponding third motors, and the two third motors are fixedly connected to the side frame 19; the fourth gear 82 is fixedly connected to the output shaft of the fourth motor, and the fourth motor is fixedly connected to the lifting plate 73.

[0061] When the mold assembly loaded with plastic is transported to the lower part of the pressurizing pipe 75, two third motors are started, the two third motors drive the two lead screws 71 to rotate, the two lead screws 71 drive the two lead screw nuts 72 to drive the lifting plate 73 to lift, the lifting plate 73 is buckled on the upper part of the movable mold 66 and the fixed mold 62 to prevent the upper part of the movable mold 66 and the fixed mold 62 from being separated when the pressurizing pipe 75 is pressurized, and the glass bottle mouth can also be formed; when the lifting plate 73 is lowered, the rotary frame 74 is lowered, the rotary frame 74 drives the pressurizing pipe 75 to extend into the cup-shaped plastic inside the movable mold 66 and the fixed mold 62, and the plastic bottle is formed by pressurizing. When the pressurizing pipe 75 is lowered and extends into the movable mold 66 and the fixed mold 62, the fourth motor is started, the output shaft of the fourth motor drives the fourth gear 82 to rotate, the fourth gear 82 meshes to drive the third gear 81 to rotate, the third gear 81 drives the rotary frame 74 to rotate, and the rotary frame 74 drives the pressurizing pipe 75 to rotate, so that the high-pressure air is supplied to the variable diameter pipe 76 from the external air compressor, the high-pressure air flows into the pressurizing pipe 75 through the variable diameter pipe 76, and the lower part of the pressurizing pipe 75 is provided with a through hole, the pressurizing hole on the outside of the pressurizing pipe 75 and the through hole in the lower part are pressurized to the outside, and the high-pressure air applied by the pressurizing pipe 75 is uniformly filled in the movable mold 66, the fixed mold 62 and the lifting plate 73 to form the plastic bottle. After the plastic bottle is formed, the output shafts of the two third motors are reversely rotated, so that the two lead screws 71 are driven to rotate to drive the two lead screw nuts 72 to drive the lifting plate 73 to reset, and then the rotary frame 74 and the pressurizing pipe 75 are reset, so that the mold assembly transported by the synchronous belt 16 can continue to be transported, and the next plastic bottle forming is prepared. The two third motors and the fourth motor are controlled by the electronic elements commonly used in the prior art, so that the two third motors and the fourth motor can be forward rotated, reversely rotated and closed according to the use requirements; so as to control the lifting and rotation of the pressurizing pipe 75, and ensure that the plastic bottle is fully formed.

[0062] Reference Figure 1 and 3 , detailed description to ensure that the molten plastic extrusion embodiment:

[0063] The upper frame 21 is fixedly connected with two fourth air cylinders 22, the cylinder rods of the two fourth air cylinders 22 are fixedly connected with a ring plate 23, the ring plate 23 is in sliding connection with the mixing barrel 13 and the middle pipe 31, the ring plate 23 is provided with a threaded hole, and the threaded hole of the ring plate 23 is connected with a feeding cover 24. Thus, the broken waste plastics can be added by removing the feeding cover 24, the mixing barrel 13 is sealed after the addition by installing the feeding cover 24, when the mixed plastics are discharged, the two fourth air cylinders 22 are started, the cylinder rods of the two fourth air cylinders 22 drive the ring plate 23 to descend, the ring plate 23 pushes the lower plastics to be discharged, the rotation of the plurality of spiral blades 32 can push the plastics to be discharged, the sliding of the ring plate 23 can scrape the plastics attached to the mixing barrel 13 and the middle pipe 31 to be discharged, and the rotation of the plurality of spiral blades 32 can scrape the plastics at the lower part of the ring plate 23 to be discharged.

Claims

1. A molding apparatus for producing plastic bottles from recycled plastic, comprising a recycling component for melting and mixing waste plastic, and a feeding component disposed on the recycling component for quantitatively feeding the molten plastic. A transport component for transporting materials is disposed below the recycling component. The transport component transports a mold component for producing plastic bottles. The mold component transported by the transport component intermittently stops below the recycling component. The transport component transports the mold component loaded with molten plastic to below a pressurizing component. The apparatus is characterized in that: The pressurizing assembly comprises a pressurizing pipe capable of moving linearly along its own axis and capable of rotating around its own axis, and a plurality of pressurizing holes are uniformly distributed on the outer wall of the pressurizing pipe, the plurality of pressurizing holes are arranged in a staggered manner in the vertical direction, and the upper portion of the pressurizing pipe is rotationally connected with a reducing pipe, the upper portion of the reducing pipe has a larger diameter than the lower portion, and the reducing pipe is in communication with the output pipe of the air compressor; The recycling assembly comprises a mixing barrel, the lower portion of the mixing barrel is provided with a converging pipe, the upper portion of the mixing barrel is fixedly connected with an upper frame, the middle portion of the upper frame is rotationally connected with a middle pipe, a plurality of spiral blades are arranged on the outer wall of the middle pipe, the upper portion of the middle pipe is fixedly connected with a first gear, and the upper frame is rotationally connected with a second gear for driving the first gear to rotate; The lower portion of the inner wall of the middle pipe is provided with a positioning plate, the upper portion of the inner wall of the middle pipe is threadedly connected with a pressing plate, a sleeve pipe is arranged between the positioning plate and the pressing plate, the lower portion of the sleeve pipe is provided with a lower plate abutting against the upper portion of the positioning plate, the upper portion of the sleeve pipe is threadedly connected with an upper plate, two first air cylinders are fixedly connected to the upper plate, a plug pipe upper cover is fixedly connected to the cylinder rods of the two first air cylinders, the plug pipe upper cover is threadedly connected with a plug pipe, the lower portion of the plug pipe is slidably connected with a plug rod, a second air cylinder for driving the plug rod to slide is fixedly connected to the plug pipe upper cover, and a through hole for accommodating the second air cylinder is arranged in the middle portion of the upper plate.

2. A device for recycling plastic to make plastic bottles as claimed in claim 1, wherein: The outer wall diameter of the plug pipe is the same as the inner wall diameter of the converging pipe.

3. A device for recycling plastic to make plastic bottles as claimed in claim 1, wherein: An installation pipe is fixedly connected to the converging pipe, an L-shaped frame is arranged on the installation pipe, a limiting frame is fixedly connected to the lower portion of the installation pipe, a third air cylinder is fixedly connected to the L-shaped frame, a cutting plate is slidably connected to the cylinder rod of the third air cylinder, and a V-shaped groove is arranged at the free end of the cutting plate.

4. A device for recycling plastic to make plastic bottles as claimed in claim 2, wherein: The mold assembly comprises a bottom pipe, a fixed mold is arranged on the bottom pipe, the upper portion of the fixed mold is fixedly connected with two first rods, a movable mold is slidably connected to the two first rods, a spring for pushing the movable mold to abut against the fixed mold is arranged at the end portion of each first rod, the lower portion of each fixed mold is fixedly connected with two second rods, the lower portion of the movable mold is provided with through holes corresponding to the two second rods, and a molding cavity for molding a plastic bottle is arranged in the middle portion of the fixed mold and the movable mold when they abut against each other.

5. A device for recycling plastic to make plastic bottles as claimed in claim 4 wherein: The conveying assembly comprises two synchronous wheels and a bottom frame for mounting the two synchronous wheels, the two synchronous wheels are driven by a synchronous belt, and a plurality of conveying holes for placing the bottom pipe are arranged on the synchronous belt.

6. A device for recycling plastic to make plastic bottles as claimed in claim 5 wherein: The synchronous wheel is a straight gear, and the synchronous belt is a toothed synchronous belt for meshing with the straight gear of the synchronous wheel.

7. A device for recycling plastic to make plastic bottles as claimed in claim 5 wherein: The bottom frame is fixedly connected with support plates corresponding to the pressurizing pipe in the up-down direction.

8. A device for recycling plastic to make plastic bottles as claimed in claim 7, wherein: An edge frame is fixedly connected to the support plate, two lead screws are rotationally connected to the edge frame, lead screw nuts are connected to the two lead screws, a lifting plate is fixedly connected to the two lead screw nuts, a rotary frame is rotationally connected to the lifting plate, the pressurizing pipe is fixedly connected to the rotary frame, a third gear is fixedly connected to the rotary frame, and a fourth gear for driving the third gear to rotate is rotationally connected to the lifting plate.

9. A device for recycling plastic to make plastic bottles as claimed in claim 1, wherein: Two fourth air cylinders are fixedly connected to the upper frame, a ring plate is fixedly connected to the cylinder rods of the two fourth air cylinders, the ring plate is slidably connected to the mixing barrel and the middle pipe, threaded holes are arranged on the ring plate, and a feeding cover is connected to the threaded holes of the ring plate.

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