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CN-121424661-B - Plastic processing die and operation method

CN121424661BCN 121424661 BCN121424661 BCN 121424661BCN-121424661-B

Abstract

The invention relates to the technical field of plastic molds and discloses a plastic processing mold and an operation method, wherein the plastic processing mold comprises a rotary workbench and blow molding equipment on one side of the rotary workbench, a plurality of molds consisting of a left half mold and a right half mold are annularly arranged on the upper surface of the rotary workbench, a damping sliding table is arranged on the outer side of each half mold, the bottom end of the damping sliding table is fixedly connected with the rotary workbench, a sliding block of the damping sliding table is rotatably connected with the half mold through a torsion spring rotating shaft, and a demolding assembly is arranged on one side of each mold. According to the invention, through arranging the structures such as the cold air channel and the air guide head, the double cooling of the outer side and the inner side of the plastic bottle is realized, the time required by cooling and shaping the plastic bottle is greatly shortened, the long-time stay of the mold is avoided to occupy the production flow, the requirement of mass production is met, meanwhile, a plurality of groups of molds are annularly arranged on the rotary workbench, the blowing and cooling processes are parallel, and the overall processing efficiency is further improved.

Inventors

  • LIU JUNJUN
  • JI JIANJUN
  • ZHANG MENG
  • WEI XUEWU

Assignees

  • 天津中环新宇科技有限公司

Dates

Publication Date
20260508
Application Date
20251226

Claims (6)

  1. 1. A plastic processing mould comprises a rotary workbench (1) and blow molding equipment (2) on one side of the rotary workbench (1), wherein the upper surface of the rotary workbench (1) is provided with a plurality of moulds consisting of left and right half moulds (3), and the plastic processing mould is characterized in that the outer side of the half moulds (3) is provided with a damping sliding table (4), the bottom end of the damping sliding table (4) is fixedly connected with the rotary workbench (1), a sliding block of the damping sliding table (4) is rotationally connected with the half moulds (3) through a torsion spring rotating shaft, one side of the mould is provided with a demoulding component (5), the demoulding component (5) comprises an electric sliding table (501) fixedly connected with the rotary workbench (1) and a cold air channel (507) formed in the rotary workbench (1), the sliding block of the electric sliding table (501) is fixedly connected with a fixing frame (502), the bottom of the fixing frame (502) is fixedly provided with an elastic pressing rod (11), the surface of the fixing frame (502) is provided with an outer pipe (503) and an inner pipe (504) in a penetrating mode, the outer wall of the fixing frame (503) is fixedly connected with the outer pipe (502), the top of the outer pipe (503) is fixedly connected with an electric pushing cylinder (505), the electric pushing cylinder (505) is fixedly connected with the pushing cylinder (505), the bottom of the outer tube (503) and the outer side wall of the inner tube (504) are fixedly connected with a double-layer air bag (506), the hollow inside of the half-die (3) and the upper side and the lower side are respectively provided with a circulation port, the upper surface of the cold air channel (507) is provided with a first air outlet (520) corresponding to the lower side circulation port, the surface of the outer tube (503) is outwards protruded to form a cavity (508), the bottom of the cavity (508) is fixedly provided with an air guide head (509) corresponding to the upper side circulation port, the bottom wall of the cavity (508) is provided with a second air outlet (510), the surface of the inner tube (504) and the upper side and the lower side of the second air outlet (510) are respectively fixedly provided with a piston ring (511) in sealing sliding fit with the outer tube (503), the inner top wall of the half-die (3) is correspondingly provided with a valve plate (514) through a torsion spring rotating connection, the inner side wall of the cold air channel (507) is correspondingly provided with a baffle (515) at the first air outlet (520), the center of the baffle (515) is fixedly provided with an elastic telescopic rod (516), the top of the elastic telescopic rod (516) is fixedly connected with the inner wall of the upper end of the inner wall of the cavity (507) corresponding to the inner wall of the inner tube (510), the inner wall of the inner tube (510) is fixedly connected with a permanent magnet (517), the inner wall of half mould (3) corresponds circulation mouth department and has set firmly elasticity slip table (6), the slider of elasticity slip table (6) sets firmly fixture block (7) of L shape, the bottom embedding of fixture block (7) has set firmly adsorption block (8) that ferromagnetic material made, blowing equipment (2) are including rotatory elevating platform (21), fixed plate (22) that are cross are set firmly on the top of rotatory elevating platform (21), blowing head (23) have been set firmly to the one end of fixed plate (22), and unloading subassembly (9) are installed to the other end of fixed plate (22), unloading subassembly (9) include holding tank (911) with regional assorted of plastic bottle downside, the downside of holding tank (911) is provided with cardboard (901) that ferromagnetic material made, the spout with cardboard (901) looks sliding connection has been seted up on the surface of fixed plate (22), elastic component (902) have been set firmly between cardboard (901) and the spout.
  2. 2. The plastic working mold according to claim 1, wherein a wind deflector (512) is rotatably connected to an inner bottom wall of the cavity (508) corresponding to the second air outlet (510), and a connecting rod (513) is rotatably connected between the wind deflector (512) and the inner pipe (504).
  3. 3. The plastic processing mold according to claim 2, wherein the blanking assembly (9) further comprises a conveyor (903), a plurality of clamping rings (904) are fixedly arranged on the surface of a conveying belt of the conveyor (903) at equal intervals, an adsorption frame (905) is fixedly arranged on the top of a frame of the conveyor (903), and an adsorption layer (912) made of permanent magnet materials is fixedly arranged on the side face of the adsorption frame (905).
  4. 4. A plastic working mold according to claim 3, wherein the blanking component (9) further comprises a bottom plate (906), the bottom plate (906) is fixedly arranged on the top of the frame of the conveyor (903), the top end of the bottom plate (906) is rotatably connected with a sliding rail (907) through a torsion spring rotating shaft, and the surface of the sliding rail (907) is slidably connected with a counterweight blanking frame (908).
  5. 5. The plastic working mold according to claim 4, wherein the blanking member (9) further comprises an L-shaped straightening plate (909), one end of the straightening plate (909) is fixedly connected with the fixing plate (22), and a groove (910) is formed in the surface of the accommodating groove (911).
  6. 6. A method of operating a plastic working mold, for use in the plastic working mold of claim 5, comprising: S1, mold closing preparation, namely closing the left half mold (3) and the right half mold (3) under the action of a torsion spring rotating shaft and gravity, inserting a clamping block (7) on the inner wall of the half mold (3) into a cold air channel (507) through a first air outlet (520), fixing the half mold (3) through magnetic attraction by an attraction block (8) and a second permanent magnet (519), and elastically pressing the half mold (3) by an elastic pressing rod (11) to ensure the sealing of the mold; S2, blow molding, namely conveying the closed mold to the lower part of blow molding equipment (2) by rotating a rotary workbench (1), driving a blow molding head (23) to move downwards to the position of a mold bottleneck by a rotary lifting table (21), blowing high-pressure gas into the mold to enable the plastic to be attached to the inner wall of a molding cavity, rotating the rotary workbench (1) after blow molding is finished, enabling the next group of molds to enter a blow molding station, and enabling the blown molds to enter a cooling station; S3, double cooling, namely, at a cooling station, an electric sliding table (501) drives a fixing frame (502) to move downwards, an air guide head (509) at the bottom end of an outer tube (503) pushes a valve plate (514) of a half mold (3) to be inserted into a mold, a permanent magnet II (519) and a permanent magnet I (517) generate magnetic repulsive force to push a baffle plate (515) to move downwards to open an air outlet I (520), cold air in a cold air channel (507) enters the half mold (3) through the air outlet I (520) to cool the outer side of a bottle body, meanwhile, cold air in a cavity (508) is injected through the air guide head (509), an inner tube (504) moves downwards to drive a wind shield plate (512) to shield an air outlet II (510) to reduce air output, the air output is prevented from impacting an unshaped bottle body, and after the bottle body is cooled below a heat deformation temperature, the inner tube (504) moves upwards to open the wind shield plate (512) to increase air output, and the cold air enters the inner side of the bottle body through the air outlet II (510); S4, after cooling is finished, an electric pushing cylinder (505) stretches to push an inner tube (504) to move downwards, so that a double-layer air bag (506) stretches to form a cylinder shape and penetrates through a bottle opening to enter a bottle body, an electric sliding table (501) drives a fixing frame (502) to move downwards to enable an outer tube (503) and the inner tube (504) to be partially inserted into a die cavity, then the electric pushing cylinder (505) contracts to drive the inner tube (504) to move upwards to squeeze the double-layer air bag (506) to expand against the inner wall of the bottle body, the electric sliding table (501) reversely operates to drive the fixing frame (502) to lift, the bottle body is pulled to move upwards through the double-layer air bag (506), and the half die (3) is driven to move upwards and outwards to rotate to open through the damping sliding table (4), so that the bottle body is separated from the die to finish demoulding; S5, automatic blanking, wherein a rotary lifting table (21) drives a containing groove (911) of a blanking assembly (9) to move below a bottle body and ascend, the bottle body is embedded into the containing groove (911), a clamping plate (901) supports the bottle body under the action of an elastic piece (902), an electric pushing cylinder (505) stretches to enable a double-layer air bag (506) to recover a cylindrical shape, an electric sliding table (501) drives a demoulding assembly (5) to move out, the rotary lifting table (21) drives the containing groove (911) to rotate above a conveyor (903), an adsorption layer (912) of an adsorption frame (905) adsorbs the clamping plate (901) to move, the bottle body falls into a clamping ring (904), a straightening plate (909) pushes a sliding rail (907) to rotate, a counterweight blanking frame (908) slides downwards to compress the bottle body in the clamping ring (904), and the conveyor (903) conveys the bottle body to the next procedure; S6, resetting the mold, namely after demolding, sliding and closing the half mold (3) along the damping sliding table (4) under the action of gravity and torsion of the torsion spring, and driving the baffle plate (515) to reset and close the first air outlet (520) by the elastic telescopic rod (516), so that the mold is restored to a state to be blow-molded, and enters the next processing cycle.

Description

Plastic processing die and operation method Technical Field The invention relates to the technical field of plastic molds, in particular to a plastic processing mold and an operation method. Background The plastic bottle is used as a packaging container widely applied to various fields such as food, beverage, daily chemicals and the like, the production and processing process of the plastic bottle has strict requirements on the efficiency and the product quality, at present, the plastic bottle mainly uses Polyester (PET), polyethylene (PE), polypropylene (PP) and the like as raw materials, and the plastic bottle is subjected to blow molding, extrusion blowing or injection molding through a plastic mold after being heated at high temperature, and in the series of processing flows, a mold cooling link is a key step for determining the production efficiency and the product qualification rate. The Chinese patent with the publication number of CN111483131B discloses a plastic bottle processing mould, which relates to the technical field of plastic bottle processing. The invention comprises a base, wherein the top of the left side wall of the base is fixedly connected with a controller, the top of the base is fixedly connected with a lifting device, the front side wall of the base is fixedly connected with a cooling device, the cooling device is far away from the side wall of the base and is rotationally connected with a die mechanism, the bottom surface of the cooling device is fixedly connected with the base, the bottom of the cooling device is rotationally connected with an ejecting device, and the lifting device comprises a fixed plate. In the above-mentioned application, the plastic bottle needs to stay in the mould for a long time to accomplish the cooling design, and cooling cycle overlength can occupy certain production time, leads to plastic bottle production efficiency low, is difficult to satisfy large-scale batch production's demand. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a plastic processing die and an operation method, which solve the problem that the production efficiency of plastic bottles is low because the plastic bottles in the prior art can be cooled and shaped only after staying in the die for a long time. The plastic processing mould comprises a rotary workbench and blow molding equipment on one side of the rotary workbench, wherein the upper surface of the rotary workbench is annularly provided with a plurality of moulds consisting of left half moulds and right half moulds, the outer side of each half mould is provided with a damping sliding table, the bottom end of each damping sliding table is fixedly connected with the rotary workbench, a sliding block of each damping sliding table is rotatably connected with the corresponding half mould through a torsion spring rotating shaft, one side of each mould is provided with a demoulding assembly, each demoulding assembly comprises an electric sliding table fixedly connected with the rotary workbench and a cold air channel formed in the rotary workbench, the sliding block of each electric sliding table is fixedly connected with a fixing frame, the surface of each fixing frame is penetrated with an outer pipe and an inner pipe, the outer wall of each outer pipe is fixedly connected with the fixing frame, the top of each outer pipe is fixedly connected with an electric pushing cylinder, the driving end of each electric pushing cylinder is fixedly connected with the corresponding inner pipe, the bottom end of each outer pipe is fixedly connected with a double-layer air bag, the inner half mould is hollow, the upper side and the lower side of each damping sliding table is respectively provided with a circulation opening, and the upper surface of the cold air channel is correspondingly provided with a lower side air outlet. Preferably, the surface of the outer tube is outwards protruded to form a cavity, an air guide head is fixedly arranged at the bottom of the cavity corresponding to the upper side flow port, an air outlet II is formed in the bottom wall of the cavity, piston rings in sealing sliding fit with the outer tube are fixedly arranged on the surface of the inner tube and on the upper side and the lower side of the air outlet II respectively, and a valve plate is connected to the inner top wall of the half mold corresponding to the flow port through a torsion spring rotating shaft in a rotating mode. Preferably, the inner bottom wall of the cavity is rotatably connected with a wind shield corresponding to the second air outlet, and a connecting rod is rotatably connected between the wind shield and the inner tube. Preferably, a baffle is arranged in the cold air channel corresponding to the first air outlet, an elastic telescopic rod is fixedly arranged in the center of the baffle, the top end of the elastic telescopic rod is fixedly connected with the inner wall of the cold air channel, a fi