PET bottle blank processing assembly and PET bottle blank processing method

Abstract

The invention relates to the technical field of PET preform processing, and in particular to a PET preform processing component and a PET preform processing method. The equipment can automatically complete the uniform feeding of PET material and a lower mold, and complete the injection molding of the PET preform. The process does not require any manual operation, and a large number of PET preforms can be injection molded at the same time, with extremely high production efficiency. Automatic cooling, demoulding, and blow molding transfer and feeding can be performed simultaneously, including a processing truncated table, the inner side of the end of the processing truncated table is rotatably connected to the lower mold in a cross shape, a loading table is provided on one side of the end of the processing truncated table, the end of the processing truncated table is slidably connected to the inner upper part of the side of the loading table, and the top of the loading table is driven and connected to a reciprocating sliding hopper. The invention adopts a ring-shaped processing component matching mode to automatically complete the injection, column pressing, cooling, and demoulding of the PET preform, with extremely high production efficiency. After the injection molding of the PET preform is completed, the preform can be blow-molded and transferred by a blow molding transfer mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of PET bottle blank processing, and in particular to a PET bottle blank processing component and a PET bottle blank processing method. Background Art

[0002] PET preform processing components are a general term for mechanical equipment and tools used to produce polyethylene terephthalate (PET) preforms. PET preforms themselves are raw materials used for the processing and production of various PET bottle bodies. PET preforms are used to process bottle bodies. A blow molding machine is required to heat the PET bottle body to a certain degree, and air is blown into the PET preform through the blow molding machine to make the preform evenly expand, and then the bottle body is formed after cooling.

[0003] The production of PET preforms requires the use of PET granules as raw materials, which are fed into the lower mold of the injection molding machine. The PET granules are heated by the lower mold to complete the hot melting, and then pressed into the inner side of the lower mold through the upper mold to complete the processing of the PET preform. Traditional processing equipment requires multiple devices for combined processing, with many steps and multiple manual operations, which is very cumbersome. At the same time, the production efficiency is insufficient, the production continuity is poor, and the demolding of the preform is time-consuming, which affects the production and processing efficiency.

[0004] Therefore, it is necessary to provide a PET preform processing assembly and a PET preform processing method to solve the above technical problems. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a PET bottle blank processing component and a PET bottle blank processing method, which can automatically complete the uniform feeding of PET material and the lower mold through the equipment, and complete the injection molding of the PET bottle blank. The process does not require any manual operation, and a large number of PET bottle blanks can be injection molded at the same time, with extremely high production efficiency. Automatic cooling, demolding and blow molding transfer feeding can also be performed at the same time.

[0006] The present invention provides a PET bottle blank, comprising a bottle body, wherein the bottom of the bottle body is set as a circular bottom, a melt bottom accumulation block is arranged at the center of the bottom surface of the circular bottom, a bottle mouth is arranged at the top of the bottle body, a bottle mouth injection molding ring is arranged between the bottle mouth and the bottle body, the top surface of the bottle mouth injection molding ring is fixed to the bottle mouth, and the bottom surface of the bottle mouth injection molding ring is fixed to the top surface of the bottle body.

[0007] A PET bottle blank processing assembly provided by the present invention comprises:

[0008] A processing round table, the inner side of the end of the processing round table is rotatably connected to the lower mold in a cross shape, a loading platform is provided on one side of the end of the processing round table, the end of the processing round table is slidably connected to the inner upper part of the side of the loading platform, the top of the loading platform is driven and connected to a reciprocating hopper, the inner side of the bottom of the hopper is rotatably connected to a dividing roller, the dividing roller is transmission-connected to the top surface of the loading platform, the position where the processing round table is connected to the loading platform is cross-shaped and is sequentially provided with a hydraulic injection molding seat, a blow molding transfer mechanism, and a stripping platform, the hydraulic injection molding seat and the blow molding transfer mechanism output dynamic The force end is located directly above the processing truncated table, the middle part of the outer wall of a section of the lower mold connected to the processing truncated table is meshed with the stripping table, a stripping collection bucket is provided on the outside of the stripping table, and the stripping collection bucket is located directly below the lower mold, a cooling mechanism is provided between the hydraulic injection molding seat and the blow molding transfer mechanism, and the output end of the cooling mechanism is located directly above the processing truncated table. The processing truncated table rotates in such a way that four sets of lower templates can be used simultaneously to simultaneously load, inject, cool, demold, blow mold, and automatically strip and collect PET bottle blanks, and can be processed continuously and quickly in a reciprocating cycle.

[0009] Preferably, the processing truncated plate is internally rotatably connected to a circumferentially distributed lower mold, the top surface of the lower mold is provided with equidistantly distributed injection mold cavities, a rotating shaft is fixed at the center of one side of the lower mold connected to the processing truncated plate, a stripping gear is fixed on the middle outer wall of the rotating shaft, the far end of the rotating shaft is rotatably connected to the internal limiting position of the processing truncated plate, a stripping table is provided at the bottom of the processing truncated plate located below the side opposite to the hydraulic injection molding seat, the stripping table is centered on the processing truncated plate, the stripping table itself is a semi-arc structure, the top surface of the stripping table is fixed with equidistantly distributed stripping tooth plates, the stripping gear and the stripping tooth plates are meshed for transmission, a rotating drive seat is provided at the center of the bottom surface of the processing truncated plate, the output end of the rotating drive seat is rotationally driven and connected to the bottom surface of the processing truncated plate, the lower mold is connected to the processing truncated plate through the meshing transmission mode of the stripping gear and the stripping table, can complete the flipping of the lower template without power consumption, and complete the automatic demolding and unloading of the PET bottle blank.

[0010] Preferably, symmetrical planar push blocks are provided on both sides of the position where the processing truncated table is connected to the lower mold, and a horizontal push rod is fixed on one side of the planar push block facing away from the lower mold, and the other end of the horizontal push rod is fixed inside one side of the planar push block connected to the processing truncated table, and symmetrical covering sheets are fixed on the upper and lower sides of one end of the planar push block connected to the processing truncated table, and the covering sheets fit and slide on the inner side of the outer surface of the processing truncated table, and the upper and lower surfaces of the covering sheets are parallel to the surface of the processing truncated table, and permanent magnet blocks are embedded and fixed on the inner side of the side where the planar push block and the lower mold fit together, and the permanent magnet blocks are magnetically adsorbed and fit together. After the lower mold is reset, the planar push block where the processing truncated table is connected to the lower template can use the permanent magnet to adsorb the lower mold to ensure the accuracy of the reset, and at the same time, after the planar push block resets the lower mold, the two sides of the lower mold can be covered with covering sheets without any gaps, thereby ensuring the accuracy of material loading inside the lower mold and preventing materials from falling into the gaps.

[0011] Preferably, a loading trough is provided at the position where the loading platform is connected to the processing circular table, and the processing circular table slides in close contact with the inner surface of the loading trough, horizontal slides are provided on both sides of the top of the loading platform, and a limiting slide groove equal to the length of the lower mold is provided in the middle of the horizontal slide, symmetrical fixed tooth plates are fixed to the outer walls of both sides of the horizontal slide, and a feeding transmission tooth plate equal to the length of the lower mold is fixed on the top surface of the horizontal slide, the hopper slides in a limited position on the top surface of the horizontal slide, and one side of the hopper connected to the horizontal slide is embedded in the inner side of the limiting slide groove, and the two sides of the hopper are covered and slided on the outside of the top of the loading platform, and a first motor is fixed at the positions of the two ends of the hopper located on the outside of the loading platform, and the output end of the first motor is connected to a driving gear, and the driving gear is meshed with the fixed tooth plate for transmission, and a triangular feeding plate is fixed at the lower inner side of the hopper. A material blocking block is fixed on the opposite side of the triangular feeding plate, and a discharge port is opened between the material blocking block and the triangular feeding plate, and a dividing roller is rotatably connected to the inner side of the discharge port, and both ends of the dividing roller are rotatably connected to both sides of the inside of the hopper, and symmetrical driven gears are fixed at both ends of the dividing roller located inside the hopper, and the driven gears are meshed with the unloading transmission tooth plate for transmission, and symmetrical sweeping pieces are fixed on both sides of the discharge port on the bottom surface of the hopper, and the bottom of the sweeping piece fits and slides with the upper surface of the processing circular table, and the feeding trough fits and slides with the surface of the processing circular table to ensure the stability of the hopper during the movement and feeding process, and prevents the material from being brought out of the feeding table when the processing circular table rotates. The hopper adopts a first motor-driven displacement method, which can drive the hopper to move back and forth, and can also drive the dividing rollers to rotate synchronously through the displacement of the hopper, so as to evenly deliver the material downward.

[0012] Preferably, an injection molding table is connected to the top output end of the hydraulic injection molding seat, and the far end of the injection molding table is located above the processing truncated table. A mold mounting groove is opened on the inner side of the far end of the injection molding table, and an upper mold with an embedded clamping is arranged on the inner side of the mold mounting groove. Conducting cables are connected to both sides of the top surface of the upper mold, and the other end of the conducting cables is electrically connected to the injection molding table. The bottom surface of the upper mold is provided with equidistantly distributed bottle blank injection molding rods, and the bottle blank injection molding rods correspond to the injection mold cavity. A heating tube is arranged inside the bottle blank injection molding rod, and the heating tube is electrically connected to the upper mold. An electromagnetic heating ring is arranged at the position where the lower mold is connected to the injection mold cavity, and the electromagnetic heating ring is fitted on the outside of the injection mold cavity. The injection molding table and the upper mold are detachably connected, so that the upper mold can be quickly replaced when processing PET bottle blanks of different types and thicknesses.

[0013] Preferably, the cooling mechanism includes a cooling air pump on the inner side, a diverter rack is connected to the top of the cooling air pump, the far end of the diverter rack is located above the processing table, the bottom surface of one end of the diverter rack located above the processing table is connected to equidistantly arranged air nozzles, the air inlet port of the air nozzle is connected to the cooling air pump, and the cooling air pump can continuously provide cooling air to the inside of the air nozzle, and blow air to cool the lower mold during the movement.

[0014] Preferably, the blow molding transfer mechanism includes a hydraulic lifting seat, the top output end of the hydraulic lifting seat is connected to a blow molding transfer table, both ends of the blow molding transfer table are located above the processing round table after rotation, air cavities are opened inside both sides of the blow molding transfer table, a rubber air nozzle corresponding to the injection mold cavity is connected directly below the air cavity, the rubber air nozzle is connected to the inside of the air cavity, an air pump and a vacuum pump are fixed on both sides of the top surface of the blow molding transfer table, the output ports of the air pump and the vacuum pump are connected to the internal air cavities on both sides of the blow molding transfer table, the blow molding table absorbs and clamps the PET bottle blank through the rubber air nozzles on both sides, and after the shift is completed, the PET bottle blank is separated from the rubber air nozzle through the air pump.

[0015] Preferably, a limit mounting seat is provided at the position where the top of the hydraulic lifting seat is connected to the blow molding transfer platform, and the blow molding transfer platform is limitedly sleeved on the outside of the limit mounting seat, and a threaded fixing screw is provided inside the limit mounting seat, and the bottom surface of the fixing screw abuts against the top surface of the blow molding transfer platform, and a bearing is provided at the position where the output end of the top of the hydraulic lifting seat is connected to the blow molding transfer platform, and the bearing abuts against the bottom surface of the blow molding transfer platform, and an annular gear plate is connected to the outside of the top surface of the output end of the hydraulic lifting seat, and symmetrical second motors are fixed on both sides of the bottom surface of the hydraulic lifting seat, and the second motor is meshed with the annular gear plate for transmission, and the hydraulic lifting seat is detachably connected to the blow molding transfer platform, so that the blow molding transfer platform can be replaced with different types of blow molding transfer platforms according to actual usage, for example, a blow molding transfer platform with a single-sided rubber air nozzle is replaced.

[0016] The present invention provides a method for processing a PET preform processing assembly, comprising:

[0017] 1. The output end of the rotary drive seat drives the processing round table to rotate. During the rotation process, the cross-distributed lower molds are respectively moved to the inside of the loading platform, directly below the upper mold at the bottom of the injection molding platform, directly below the rubber air nozzle on one side of the blow molding transfer platform, and above the material removal collection hopper. The lower mold inside the loading platform is driven by the first motor to drive the hopper to move. At the same time, during the movement of the hopper, the material distribution roller will rotate at the same time to evenly feed the material in the hopper into the inner side of the lower mold. During the unloading process, the material blocking plate will block the excess material directly below the hopper;

[0018] After the hopper is loaded, the lower mold will be driven by the processing round table to rotate and move to the bottom of the upper mold inside the hydraulic injection molding table. During the movement, the material inside the lower mold will be heated, softened and melted by the electromagnetic heating ring. At this time, the upper mold is driven by the hydraulic injection molding seat to move down, extrude and inject the softened and melted material to form a preform. Then the upper mold is separated from the lower mold, and the lower mold rotates and moves under the drive of the processing round table. During the movement of the lower mold, the air nozzle sprays cooling gas to cool the preform inside the moving lower mold. The lower mold moves to the bottom of the blow molding transfer table, and the hydraulic lifting seat starts to drive the blow molding transfer table to move down, and the rubber air nozzle is fitted with the injection-molded preform. At this time, the vacuum pump starts to extract and adsorb the inside of the preform, adsorbs and clamps all the preforms, and the hydraulic lifting seat rises to drive all the preforms to demold from the lower mold. The second motor starts to drive the blow molding transfer table to rotate, and the demolded preform is rotated and transferred to one side, and sent into the blow molding equipment to directly blow the preform. After demolding, the lower mold continues to rotate with the processing round table, and continues to load after moving to the loading table position to produce and process the preform;

[0019] 2. If the preform does not need to be directly processed for blow molding, after cooling by the air nozzle, the lower mold is driven by the processing round table to move to the position of the stripping table. At this time, the stripping gear is engaged with the stripping tooth plate, and the lower mold is driven by the stripping gear to rotate and flip. While the lower mold rotates, the horizontal push rod starts to shrink, and the plane push block shrinks to both sides to provide rotation space for the lower mold to rotate. When the lower mold rotates to the middle above the stripping collection bucket, the lower mold is in a completely flipped state, and the preform in the injection mold cavity falls to the inside of the stripping collection bucket due to gravity. After that, the processing round table rotates, and the stripping gear is engaged with the stripping tooth plate to drive the lower mold to rotate and flip to the front. After the lower mold is flipped, the horizontal push rod starts to push the plane push block to fit the lower mold. The lower mold is in a parallel state and moves to the inside of the loading table, and the hopper loads the inside of the lower mold.

[0020] Compared with the related art, the PET preform processing assembly and PET preform processing method provided by the present invention have the following beneficial effects:

[0021] 1. The present invention adopts a ring-shaped processing component matching mode, and can automatically complete the injection, column pressing, cooling and demoulding of the PET bottle blank by rotating the processing round table. The production process is fully automated without any manual intervention, and the production efficiency is extremely high. After the injection molding of the PET bottle blank is completed, the blow molding transfer mechanism can be used to blow the bottle blank to achieve multiple functional applications.

[0022] 2. The loading table position adopts a combination of loading trough and processing round table, which allows the hopper to quickly inject PET particles into the lower mold to complete the filling of raw materials. At the same time, the bottom of the hopper adopts a distribution roller and a horizontal slide transmission connection. During the movement of the hopper, the distribution roller and the upper feeding transmission gear plate of the horizontal slide are engaged to complete automatic material unloading and distribution, thereby ensuring the uniformity of the PET material feeding into the lower mold.

[0023] 3. The injection molding table on the top of the hydraulic injection molding seat has the function of replacing and installing the upper mold. When producing and processing PET preforms of different types or thicknesses, the upper mold can be quickly disassembled and replaced to improve the applicability of PET preform processing of this device. A heating tube is installed inside the preform injection molding rod inside the upper mold, which can heat itself before injection to improve the injection quality of the PET preform.

[0024] 4. When the PET bottle body needs to be blow molded directly, the blow molding transfer mechanism can directly transfer the preform after injection molding, and transfer the preform to be blown into the blow molding equipment, thereby improving the practical functionality of the device. The blow molding transfer table on the top of the blow molding transfer mechanism has the functions of extracting vacuum and blowing air, which can smoothly clamp and deliver the preform.

[0025] 5. A stripping table is provided on the side of the processing table away from the hydraulic injection molding table, which can engage the stripping gear at the connection between the lower mold and the processing table to drive the lower mold to rotate, and flip the PET preform after injection molding and cooling to the inside of the collection area to complete the demolding and collection of the PET preform. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of a PET bottle blank provided by the present invention

[0027] Figure 2 A structural schematic diagram of a preferred embodiment of a PET preform processing assembly and a PET preform processing method provided by the present invention;

[0028] Figure 3 for Figure 2 The structural section exploded diagram of the loading platform position shown;

[0029] Figure 4 for Figure 3 The schematic diagram of the structure transmission of the hopper position shown;

[0030] Figure 5 for Figure 4 The structure of the hopper is shown in a schematic diagram of an exploded and enlarged cross-section;

[0031] Figure 6 for Figure 2 The enlarged schematic diagram of the structure of the middle section of the processing truncated table shown;

[0032] Figure 7 for Figure 6 The structure of the machining truncated table connected to the lower mold position is shown in an exploded and enlarged schematic diagram;

[0033] Figure 8 for Figure 2 The structural section exploded and enlarged schematic diagram of the hydraulic injection molding seat position shown;

[0034] Fig. 9 for Figure 2 The structural schematic diagram of the blow molding transfer mechanism shown;

[0035] Fig.10 for Fig. 9 The structural cross-sectional exploded enlarged schematic diagram of the position of the blow molding transfer table is shown.

[0036] Numbers in the figure: 1. Bottle body; 101. Round bottom; 102. Melt bottom stacking block; 103. Bottle mouth injection ring; 104. Bottle mouth; 2. Processing round table; 21. Lower mold; 22. Injection mold cavity; 23. Rotating shaft; 24. Stripping gear; 25. Stripping table; 26. Stripping tooth plate; 27. Rotary drive seat; 201. Plane push block; 202. Horizontal push rod; 203. Coating sheet; 204. Permanent magnet block; 3. Loading table; 301. Loading trough; 302. Horizontal slide; 303. Limiting slide; 304. Fixed tooth plate; 305. Unloading transmission tooth plate; 4. Hopper; 401. Triangular feeding plate; 402. Material blocking block; 403. Discharge port; 404. Distributing roller; 405. Sweeping sheet; 406, driven gear; 407, driving gear; 408, first motor; 5, hydraulic injection molding seat; 501, injection molding table; 502, mold mounting groove; 503, upper mold; 504, connecting cable; 505, preform injection molding rod; 506, heating tube; 507, electromagnetic heating coil; 6, cooling mechanism; 601, cooling air pump; 602, diverter rack; 603, air nozzle; 7, blow molding transfer mechanism; 71, limit mounting seat; 72, fixed screw; 73, bearing; 74, annular gear plate; 75, second motor; 701, hydraulic lifting seat; 702, blow molding transfer table; 703, air cavity; 704, rubber air nozzle; 705, air pump; 706, vacuum pump; 8, stripping collection bucket. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0038] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0039] In this technical solution, the output mode of the rotating drive seat is stepper motor driven, the hydraulic injection seat and the hydraulic lifting seat are both driven by hydraulic cylinders, the first motor and the second motor are both servo motors, and the cooling air pump is a YWYX mechanical cooling blowing vortex air pump.

[0040] Please see attached Figure 1-Figure 10 , a PET bottle blank provided by an embodiment of the present invention, the PET bottle blank comprising:

[0041] The bottle body 1 has a circular bottom 101 at the bottom, a bottle mouth 104 is connected to the top of the bottle body 1, a bottle mouth injection ring 103 is provided between the bottle mouth 104 and the bottle body 1, and a melt bottom accumulation block is provided at the center of the bottom end of the circular bottom 101. When the bottle body 1 is blow-molded into a PET bottle blank, the side outer wall of the bottle body can be elastically enlarged. The bottle bottom and the melt bottom accumulation block 102 can keep the bottom of the bottle body with sufficient PET material and a bottle bottom with sufficient strength during the blow molding of the PET bottle blank. The bottle mouth injection ring 103 can ensure the material hardness of the bottle mouth during the blow molding of the PET bottle blank.

[0042] Please see attached Figure 1-Figure 10 , an embodiment of the present invention provides a PET bottle blank processing assembly, the PET bottle blank processing assembly comprising:

[0043] A processing truncated table 2 is provided with a rotating drive seat 27 at the center of the bottom surface of the processing truncated table 2. The rotating drive seat 27 drives the processing truncated table 2 to rotate through the driving method of a stepping motor. The four ends of the processing truncated table 2 are rotatably connected to a lower mold 21 in a cross shape. The lower mold 21 is designed with multiple groups, which can quickly and uninterruptedly load, inject, and cool and demold the PET bottle blank. The inner side of the top surface of the lower mold 21 is provided with injection mold cavities 22 arranged equidistantly.

[0044] A rotating shaft 23 is fixed on one side of the lower mold 21 connected to the processing truncated table 2 for rotational connection with the processing truncated table 2, and a stripping gear 24 is connected to the outer wall of the middle part of the rotating shaft 23. A stripping platform 25 is provided at the bottom of one side of the processing truncated table 2 and below the stripping gear 24. The stripping platform 25 itself is designed as a semi-arc structure, and a stripping tooth plate 26 is connected to the top surface of the stripping platform 25. The stripping tooth plate 26 is meshed with the stripping gear 24 for transmission. When the stripping gear 24 is rotated by the processing truncated table 2, the stripping gear 24 will mesh with the stripping tooth plate 26, thereby driving the lower mold 21 to rotate and flip, thereby completing the demolding of the preform.

[0045] Plane push blocks 201 are horizontally slidably connected on both sides of the position where the processing truncated table 2 is connected to the lower mold 21. A horizontal push rod 202 is connected to the side of the planar push block 201 close to the processing truncated table 2. The other end of the horizontal push rod 202 is embedded and fixed on the inner side of the processing truncated table 2. The horizontal push rod 202 pushes the planar push block 201 to move, which can provide rotation space for the lower mold 21 during its rotation. At the same time, after the rotation is completed, the lower mold 21 can be clamped to ensure the horizontal stability of the lower mold 21.

[0046] Symmetrical covering sheets 203 are fixed at the upper and lower ends of the plane push block 201. The covering sheets 203 slide in contact with the inner surface of the processing truncated table 2. The covering sheets 203 can ensure the horizontal effect of the surface of the processing truncated table 2 and avoid the generation of gaps during the advancement of the plane push block 201. Permanent magnet blocks 204 are embedded and connected to the inner sides of the opposite surfaces of the plane push block 201 and the lower mold 21. The permanent magnet blocks 204 can provide magnetic force after the lower mold 21 is flipped to a certain angle, so that the lower mold 21 can be quickly reset and kept horizontal.

[0047] A loading platform 3 is provided on one side of the processing circular table 2 adjacent to the stripping table 25, and a loading trough 301 is opened inside the loading platform 3. The processing circular table 2 is slidably connected to the inner surface of the loading trough 301, and the top of the loading trough 301 is limitedly slidably connected to the hopper 4, and the bottom of the hopper 4 is drivingly connected to both sides of the horizontal slide 302 on the top surface of the loading platform 3. The first motor 408 on both sides of the bottom of the hopper 4 drives the driving gear 407 to engage with the fixed tooth plates 304 on both sides of the horizontal slide 302 to complete the reciprocating sliding of the hopper 4, and a dividing roller 404 is rotatably connected to the bottom of the inner side of the hopper 4, and driven gears 406 are connected to both ends of the dividing roller 404, and the driven gear 406 is engaged with the unloading transmission tooth plate 305 on the top surface of the horizontal slide 302. During the displacement of the hopper 4, the dividing roller 404 can rotate to evenly discharge the material inside the loading trough 301.

[0048] The bottom of the hopper 4 is connected to the two sides of the dividing roller 404, and a triangular feeding plate 401 and a material blocking block 402 are respectively provided on both sides, which can deliver the material to the two sides of the dividing roller 404 and prevent the material from falling down through the gaps on both sides of the dividing roller 404. The bottom of the hopper 4 is located on both sides of the dividing roller 404 and fixed with symmetrical sweeping pieces 405. The sweeping pieces 405 can collect excess material under the hopper 4 during the reciprocating sliding of the hopper 4 to fill the lower mold 21, thereby preventing the material from being scattered. At the same time, the excess material can be scraped and sent to the inside of the lower mold 21 again.

[0049] As the lower mold 21 moves to the bottom of the hydraulic injection molding seat 5 driven by the processing truncated table 2, the electromagnetic heating coil 507 inside the injection mold cavity 22 of the lower mold 21 heats and softens the material. When the lower mold 21 moves to the bottom of the hydraulic injection molding seat 5, the hydraulic cylinder inside the hydraulic injection molding seat 5 is started, driving the injection molding table 501 to move downward, covering the upper mold 503 with the lower mold 21, completing the extrusion injection molding of the material inside the lower mold 21, and allowing the material to form a preform.

[0050] It should be noted that the preform injection rod 505 at the bottom of the upper mold 503 is heated by a heating tube 506, so that the preform injection rod 505 itself has a preheating function, and can perform hot melt injection molding on the material inside the lower mold 21, thereby ensuring the injection molding quality of the preform. The top of the upper mold 503 is opened with an injection port, and the principle is injected into it for extrusion injection molding.

[0051] It should be noted that the injection molding table 501 and the upper mold 503 are detachable in design. When different types or sizes of preforms need to be molded, the connecting cable 504 can be separated, the upper mold 503 can be taken out, and the upper mold 503 can be replaced to complete the injection molding of different types of preforms.

[0052] The preform after injection molding will move with the processing truncated table 2. During the movement, the cooling mechanism 6 will blow gas to the surface of the processing truncated table 2 and the inside of the lower mold 21 through the cooling air pump 601 to cool the preform after injection molding, and create a gap between the preform and the mold through high-pressure blowing to perform pre-demolding between the preform and the mold.

[0053] When the processing truncated table 2 moves the cooled preforms to the bottom of the blow molding transfer mechanism 7, if it is necessary to blow mold this batch of preforms, the hydraulic lifting seat 701 can be started to drive the blow molding transfer table 702 to descend, and the rubber air nozzle 704 can be used to penetrate into the interior of the preforms. The vacuum pump 706 is used to suck air into the air cavity 703, and the preforms are adsorbed on the outside of the rubber air nozzle 704. After that, the hydraulic lifting seat 701 is raised and rotated to transfer this batch of preforms to the blow molding equipment on one side. When the preforms are separated, the air pump 705 can be started, the vacuum pump 706 can be turned off, and a thrust can be applied to the preforms to separate the preforms from the rubber air nozzle 704.

[0054] It should be noted that the blow molding transfer platform 702 is detachably connected to the hydraulic lifting seat 701. By separating the limiting mounting seat 71 and the fixing screw 72, the blow molding transfer platform 702 can be separated and replaced with a different type of blow molding transfer platform 702 for use.

[0055] It should be noted that during the rotation of the blow molding transfer platform 702 , the output end of the second motor 75 on the bottom surface of the blow molding transfer platform 702 is meshed with the annular gear plate 74 to provide rotational power for the blow molding transfer platform 702 .

[0056] When the preform does not need to be blow-molded, the preform is driven by the processing truncated table 2 to move to the position of the stripping table 25. After the stripping gear 24 is engaged with the stripping tooth plate 26, the lower mold 21 will rotate and flip to strip the material, and the preform is demolded and collected into the inner side of the stripping collection bucket 8.

[0057] Please see attached Figure 1-Figure 10 The embodiment of the present invention provides a method for processing a PET preform processing assembly, and the method for processing a PET preform processing assembly includes:

[0058] 1. The output end of the rotating drive seat 27 drives the processing truncated table 2 to rotate. During the rotation process, the cross-distributed lower mold 21 is respectively moved to the inside of the loading platform 3, directly below the upper mold 503 at the bottom of the injection molding platform 501, directly below the rubber air nozzle 704 on one side of the blow molding transfer platform 702, and above the material removal collection hopper 8. The lower mold 21 located inside the loading platform 3 is driven by the first motor 408 to drive the hopper 4 to move. At the same time, during the movement of the hopper 4, the material distribution roller 404 will rotate at the same time to evenly feed the material in the hopper 4 into the inner side of the lower mold 21. During the unloading process, the material blocking plate will block the excess material directly below the hopper 4;

[0059] After the material is loaded through the hopper 4, the lower mold 21 is driven by the processing round table 2 to rotate and move to the bottom of the upper mold 503 inside the hydraulic injection molding table 501. During the movement, the material inside the lower mold 21 is heated, softened, and melted by the electromagnetic heating ring 507. At this time, the upper mold 503 is driven by the hydraulic injection molding seat 5 to move downward, and the softened and melted material is squeezed and injected to form a preform. Then the upper mold 503 is separated from the lower mold 21, and the lower mold 21 rotates and moves driven by the processing round table 2. During the movement of the lower mold 21, the air nozzle 603 sprays cooling gas to cool the preform inside the moving lower mold 21. The lower mold 21 moves to the blow molding rotary table. Directly below the transfer platform 702, the hydraulic lifting seat 701 starts to drive the blow molding transfer platform 702 to move downward, and the rubber air nozzle 704 is fitted with the injection-molded preform. At this time, the vacuum pump 706 starts to extract and adsorb the inside of the preform, adsorbing and clamping all the preforms, and the hydraulic lifting seat 701 rises to drive all the preforms to demold from the lower mold 21. The second motor 75 starts to drive the blow molding transfer platform 702 to rotate, and the demolded preforms are rotated and transferred to one side, and sent into the blow molding equipment to directly blow the preforms. After demolding, the lower mold 21 continues to rotate with the processing round table 2, and continues to load after moving to the position of the loading platform 3, and the preforms are produced and processed;

[0060] 2. If the preform does not need to be directly processed and blow-molded, after being cooled by the air nozzle 603, the lower mold 21 is driven by the processing round table 2 to move to the position of the stripping table 25. At this time, the stripping gear 24 is meshed with the stripping tooth plate 26, and the lower mold 21 is rotated and flipped under the drive of the stripping gear 24. While the lower mold 21 rotates, the horizontal push rod 202 starts to shrink, and the plane push block 201 shrinks to both sides to provide a rotation space for the rotation of the lower mold 21. When the lower mold 21 rotates to the middle above the stripping collection bucket 8, the lower mold 21 is in a completely flipped state, and the preform in the injection mold cavity 22 falls to the inside of the stripping collection bucket 8 due to gravity. Then, the processing round table 2 rotates, and the stripping gear 24 is meshed with the stripping tooth plate 26 to drive the lower mold 21 to rotate and flip to the front. After the flipping of the lower mold 21 is completed, the horizontal push rod 202 starts to push the plane push block 201 to fit with the lower mold 21. The lower mold 21 is in a parallel state and moves to the inside of the loading table 3, and the hopper 4 loads the inside of the lower mold 21.

[0061] Working process: the material inside the hopper 4 can be reciprocated to fill the material inside the lower mold 21 inside the feeding trough 301. After the filling is completed, the lower mold 21 moves to the bottom of the injection molding table 501, and is injected by the upper mold 503 to complete the injection molding of the PET bottle blank. Later, during the movement of the PET bottle blank, the cooling mechanism 6 cools the bottle blank. When the bottle blank moves to the position of the blow molding transfer mechanism 7, if blow molding is required, the bottle blank can be transferred to the blow molding area and blow molded. If blow molding is not required, the bottle blank will move to the position of the stripping collection hopper 8 to complete the demoulding and unloading. In this reciprocating cycle, the bottle blank can be processed uninterruptedly by continuously loading the material inside the hopper 4.

[0062] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0063] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A PET preform processing assembly, characterized in that: The invention comprises a processing truncated table (2), the inner side of the end of the processing truncated table (2) is rotatably connected to a lower mold (21) in a cross shape, a loading platform (3) is provided on one side of the end of the processing truncated table (2), the end of the processing truncated table (2) is slidably connected to the inner upper part of the side of the loading platform (3), the top of the loading platform (3) is driven and connected to a reciprocating hopper (4), the inner side of the bottom of the hopper (4) is rotatably connected to a distribution roller (404), the distribution roller (404) is transmission-connected to the top surface of the loading platform (3), the position where the processing truncated table (2) is connected to the loading platform (3) is cross-shaped and liquid A hydraulic injection molding seat (5), a blow molding transfer mechanism (7), and a stripping table (25), wherein the output power ends of the hydraulic injection molding seat (5) and the blow molding transfer mechanism (7) are located directly above the processing truncated table (2), the middle part of a section of the outer wall of the lower mold (21) connected to the processing truncated table (2) is meshed with the stripping table (25), a stripping collection bucket (8) is provided on the outer side of the stripping table (25), and the stripping collection bucket (8) is located directly below the lower mold (21), a cooling mechanism (6) is provided between the hydraulic injection molding seat (5) and the blow molding transfer mechanism (7), and the output end of the cooling mechanism (6) is located directly above the processing truncated table (2); The processing truncated table (2) is internally rotatably connected to a circumferentially distributed lower mold (21), and the top surface of the lower mold (21) is provided with injection mold cavities (22) distributed at equal intervals. A rotating shaft (23) is fixed at the center of one side of the lower mold (21) connected to the processing truncated table (2), and a stripping gear (24) is fixed to the outer wall of the middle part of the rotating shaft (23). The far end of the rotating shaft (23) is rotatably connected to the inside of the processing truncated table (2), and the bottom of the processing truncated table (2) is located opposite to the hydraulic injection molding seat (5). A stripping platform (25) is provided below one side of the vertical surface. The stripping platform (25) is centered on the processing truncated table (2). The stripping platform (25) itself is a semi-arc structure. The top surface of the stripping platform (25) is fixed with stripping tooth plates (26) distributed at equal intervals. The stripping gear (24) is meshed with the stripping tooth plates (26) for transmission. A rotating drive seat (27) is provided at the center of the bottom surface of the processing truncated table (2). The output end of the rotating drive seat (27) is connected to the bottom surface of the processing truncated table (2) for rotational driving. Symmetrical planar push blocks (201) are provided on both sides of the position where the processing truncated plate (2) is connected to the lower mold (21); a horizontal push rod (202) is fixed to the side of the planar push block (201) facing away from the lower mold (21); the other end of the horizontal push rod (202) is fixed inside the side of the processing truncated plate (2) connected to the planar push block (201); and symmetrical covering sheets (203) are fixed to the upper and lower sides of one end of the planar push block (201) connected to the processing truncated plate (2).

2. A PET preform processing assembly according to claim 1, characterized in that: A feeding trough (301) is provided at the position where the feeding platform (3) is connected to the processing truncated table (2), and the processing truncated table (2) slides in close contact with the inner surface of the feeding trough (301). Horizontal slides (302) are provided on both sides of the top of the feeding platform (3), and a limiting slide groove (303) with the same length as the lower mold (21) is provided in the middle of the horizontal slide (302). Symmetrical fixed tooth plates (304) are fixed to the outer walls of both sides of the horizontal slide (302). A feeding transmission tooth plate (305) having the same length as the lower mold (21) is fixed on the top surface of the horizontal slide (302), the hopper (4) is limitedly slid on the top surface of the horizontal slide (302), one side of the hopper (4) connected to the horizontal slide (302) is embedded and slid inside the limited slide groove (303), the two sides of the hopper (4) are covered and slid on the outside of the top of the loading platform (3), and the first motor (408) is fixed at the positions of the two ends of the hopper (4) located outside the loading platform (3), and the first The output end of the motor (408) is connected to a driving gear (407), and the driving gear (407) is meshed with a fixed tooth plate (304) for transmission. A triangular feeding plate (401) is fixed at the lower inner side of the hopper (4), and a material blocking block (402) is fixed on the opposite side of the triangular feeding plate (401). A discharge port (403) is provided between the material blocking block (402) and the triangular feeding plate (401), and a material distributing roller (403) is rotatably connected to the inner side of the discharge port (403). 4), the two ends of the material distribution roller (404) are rotatably connected to the two sides inside the hopper (4), and symmetrical driven gears (406) are fixed at the two ends of the material distribution roller (404) located inside the hopper (4), and the driven gears (406) are meshed with the unloading transmission gear plate (305) for transmission, and the bottom surface of the hopper (4) is located on both sides of the discharge port (403) and symmetrical sweeping pieces (405) are fixed, and the bottom of the sweeping piece (405) is in contact with and slides on the upper surface of the processing table (2).

3. A PET preform processing assembly according to claim 2, characterized in that: The top output end of the hydraulic injection molding seat (5) is connected to an injection molding table (501), the far end of the injection molding table (501) is located above the processing truncated table (2), a mold installation groove (502) is provided on the inner side of the far end of the injection molding table (501), an upper mold (503) is provided inside the mold installation groove (502), and both sides of the top surface of the upper mold (503) are connected to connecting cables (504), and the other end of the connecting cable (504) is electrically connected to the injection molding table (501). The bottom surface of the upper mold (503) is provided with bottle blank injection rods (505) distributed at equal intervals, the bottle blank injection rods (505) correspond to the injection mold cavity (22), a heating tube (506) is provided inside the bottle blank injection rod (505), and the heating tube (506) is electrically connected to the upper mold (503), and an electromagnetic heating ring (507) is provided at the position where the lower mold (21) is connected to the injection mold cavity (22), and the electromagnetic heating ring (507) is sleeved on the outside of the injection mold cavity (22).

4. A PET preform processing assembly according to claim 3, characterized in that: The inner side of the cooling mechanism (6) includes a cooling air pump (601), the top of the cooling air pump (601) is connected to a diverter rack (602), the far end of the diverter rack (602) is located above the processing truncated table (2), and the bottom surface of one end of the diverter rack (602) located above the processing truncated table (2) is connected to equidistantly arranged air nozzles (603), and the air inlet port of the air nozzle (603) is connected to the cooling air pump (601).

5. A PET preform processing assembly according to claim 4, characterized in that: The blow molding transfer mechanism (7) comprises a hydraulic lifting seat (701), the top output end of the hydraulic lifting seat (701) is connected to a blow molding transfer platform (702), and both ends of the blow molding transfer platform (702) are located above the processing truncated table (2) after rotation. Air cavities (703) are provided inside the two sides of the blow molding transfer platform (702), and a rubber air nozzle (704) corresponding to the injection mold cavity (22) is connected directly below the air cavity (703), and the rubber air nozzle (704) is connected to the inside of the air cavity (703). An air pump (705) and a vacuum pump (706) are fixed to the two sides of the top surface of the blow molding transfer platform (702), and the output ports of the air pump (705) and the vacuum pump (706) are connected to the air cavities (703) inside the two sides of the blow molding transfer platform (702).

6. A PET preform processing assembly according to claim 5, characterized in that: A position where the top of the hydraulic lifting seat (701) is connected to the blow molding transfer platform (702) is provided with a limit mounting seat (71), and the blow molding transfer platform (702) is limitedly sleeved on the outside of the limit mounting seat (71). A threaded fixing screw (72) is provided inside the limit mounting seat (71), and the bottom surface of the fixing screw (72) abuts against the top surface of the blow molding transfer platform (702). A bearing (73) is provided at the position where the output end of the top of the hydraulic lifting seat (701) is connected to the blow molding transfer platform (702), and the bearing (73) abuts against the bottom surface of the blow molding transfer platform (702). An annular tooth plate (74) is connected to the outside of the top surface of the output end of the hydraulic lifting seat (701), and symmetrical second motors (75) are fixed on both sides of the bottom surface of the hydraulic lifting seat (701), and the second motor (75) is meshed with the annular tooth plate (74) for transmission.

7. A method for processing a PET preform processing assembly according to claim 6, characterized in that: The processing method of a PET preform processing assembly comprises the following steps: The output end of the rotating drive seat (27) drives the processing truncated table (2) to rotate. During the rotation process, the cross-distributed lower mold (21) is respectively moved to the inside of the loading platform (3), directly below the upper mold (503) at the bottom of the injection molding platform (501), directly below the rubber air nozzle (704) on one side of the blow molding transfer platform (702), and above the material removal collection hopper (8). The lower mold (21) located inside the loading platform (3) is driven by the first motor (408) to drive the hopper (4) to move. At the same time, during the movement of the hopper (4), the material distribution roller (404) will rotate at the same time to evenly feed the material in the hopper (4) into the inner side of the lower mold (21). During the unloading process, the material blocking plate will block excess material directly below the hopper (4); After the material is loaded through the hopper (4), the lower mold (21) is driven by the processing round table (2) to rotate and move to the lower part of the upper mold (503) inside the hydraulic injection molding table (501). During the movement, the material inside the lower mold (21) is heated, softened and melted by the electromagnetic heating ring (507). At this time, the upper mold (503) is driven by the hydraulic injection molding seat (5) to move downward, and the softened and melted material is squeezed and injected to form a bottle blank. After that, the upper mold (503) is separated from the lower mold (21). The lower mold (21) is driven by the processing round table (2) to rotate and move. During the movement of the lower mold (21), the air nozzle (603) sprays cooling gas to cool the bottle blank inside the moving lower mold (21). The lower mold (21) moves. The blow molding transfer platform (702) moves to the bottom of the blow molding transfer platform (702), the hydraulic lifting seat (701) starts to drive the blow molding transfer platform (702) to move downward, and the rubber air nozzle (704) is fitted with the injection-molded preform. At this time, the vacuum pump (706) starts to extract and adsorb the inside of the preform, adsorbing and clamping all the preforms. The hydraulic lifting seat (701) rises to drive all the preforms to be demolded from the lower mold (21), and the second motor (75) starts to drive the blow molding transfer platform (702) to rotate, and the demolded preforms are rotated and transferred to one side, and sent into the blow molding equipment to directly blow the preforms. After demolding, the lower mold (21) continues to rotate with the processing round table (2), and moves to the position of the loading platform (3) to continue loading, and the production and processing of the preforms is carried out; If the preform does not need to be directly processed and blow-molded, after being cooled by the air jet nozzle (603), the lower mold (21) is driven by the processing round table (2) to move to the position of the stripping table (25). At this time, the stripping gear (24) is meshed with the stripping tooth plate (26), and the lower mold (21) is rotated and turned under the drive of the stripping gear (24). While the lower mold (21) rotates, the horizontal push rod (202) starts to shrink, and the flat push block (201) shrinks to both sides to provide a rotation space for the rotation of the lower mold (21). When the lower mold (21) rotates to the middle above the stripping collection bucket (8), The lower mold (21) is in a completely flipped state, and the preform in the injection mold cavity (22) falls to the inside of the stripping collection bucket (8) due to gravity. Then, the processing truncated table (2) rotates, and the stripping gear (24) engages with the stripping tooth plate (26) to drive the lower mold (21) to rotate and flip to the front. After the flipping of the lower mold (21) is completed, the horizontal push rod (202) starts to push the plane push block (201) to fit with the lower mold (21), and the lower mold (21) moves to the inside of the loading platform (3) in a parallel state, and the hopper (4) loads the inside of the lower mold (21).

Images