CN109383005B - Processing technology of plastic bottle - Google Patents
Processing technology of plastic bottle Download PDFInfo
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- CN109383005B CN109383005B CN201811533264.8A CN201811533264A CN109383005B CN 109383005 B CN109383005 B CN 109383005B CN 201811533264 A CN201811533264 A CN 201811533264A CN 109383005 B CN109383005 B CN 109383005B
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- bottle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/28—Blow-moulding apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/64—Heating or cooling preforms, parisons or blown articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/64—Heating or cooling preforms, parisons or blown articles
- B29C49/6409—Thermal conditioning of preforms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7158—Bottles
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
The invention discloses a processing technology and a method of a plastic bottle, which comprises the following steps: (1) sleeving the bottle blank on a fixed block of a bottle blowing machine, and fixing the bottle blank; (2) operating the lampshade of the infrared high-temperature lamp to descend, so that the lampshade is sleeved on the bottle blank to irradiate the bottle blank, and performing preheating treatment on the bottle blank; introducing high-pressure gas and cooling liquid into the fixed block to cool the bottle mouth; (3) after the bottle preform is preheated, the lampshade is lifted, the bottle blowing mold is controlled to move to the bottle preform, and the bottle preform is wrapped in the bottle blowing mold; conducting the fixed block and the interior of the bottle blank, and introducing high-pressure gas into the bottle blank to perform bottle blowing operation on the bottle blank; (4) after the bottle blowing is finished, the exhaust pipe and the bottle blowing mold are communicated, and high-pressure gas is introduced into the interior of the bottle blowing mold to rapidly cool the bottle blowing mold and the plastic bottle; (5) and rotating the fixed block by a certain angle, and ejecting the plastic bottle from the fixed block under the action of the cylinder to finish the processing of the plastic bottle.
Description
Technical Field
The invention belongs to the technical field of plastic bottle processing, and particularly relates to a processing technology of a plastic bottle.
Background
The plastic bottle is mainly made of polyethylene or polypropylene and other materials with a plurality of organic solvents. The plastic bottle widely uses Polyester (PET), Polyethylene (PE) and polypropylene (PP) as raw materials, and is a plastic container which is added with a corresponding organic solvent, heated at high temperature, blown, extruded and blown or injection molded by a plastic mold. The packaging container is mainly used for liquid or solid disposable plastic packaging containers of beverages, foods, pickles, honey, dried fruits, edible oil, agricultural and veterinary medicines and the like. The plastic bottle has the characteristics of low breakage probability, low cost, high transparency, food-grade raw materials and the like.
The bottle blowing machine is generally used in the processing technology of the plastic bottle, the existing bottle blowing machine separately processes the heating and the bottle blowing of the plastic bottle when the plastic bottle is processed, the plastic bottle needs to be cooled for a long time after being blown, the cooling time is usually longer than the heating time, the heating equipment on the bottle blowing machine is in an idle state at the moment, and the heating equipment needs to play a role in heat preservation on the heated bottle blank, so that the processing efficiency of the plastic bottle is influenced, and the energy consumption of the bottle blowing machine is also increased.
Disclosure of Invention
The invention provides a plastic bottle processing technology and method for improving the plastic bottle processing efficiency and reducing the energy consumption of a bottle blowing machine in order to overcome the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: a processing technology of a plastic bottle comprises the following steps:
(1) sleeving the bottle blank on a fixed block of a bottle blowing machine, and fixing the bottle blank;
(2) operating the lampshade of the infrared high-temperature lamp to descend, so that the lampshade is sleeved on the bottle blank to irradiate the bottle blank, and performing preheating treatment on the bottle blank; introducing high-pressure gas and cooling liquid into the fixed block to cool the bottle mouth;
(3) after the bottle preform is preheated, the lampshade is lifted, the bottle blowing mold is controlled to move to the bottle preform, and the bottle preform is wrapped in the bottle blowing mold; conducting the fixed block and the interior of the bottle blank, and introducing high-pressure gas into the bottle blank to perform bottle blowing operation on the bottle blank;
(4) after the bottle blowing is finished, the exhaust pipe and the bottle blowing mold are communicated, and high-pressure gas is introduced into the interior of the bottle blowing mold to rapidly cool the bottle blowing mold and the plastic bottle;
(5) and rotating the fixed block by a certain angle, and ejecting the plastic bottle from the fixed block under the action of the cylinder to finish the processing of the plastic bottle.
After the bottle blank is sleeved on the fixing block, the bottle blank is fixed through the fixing block, the fixing block does not move any more, the lampshade descends to cover the plastic bottle in the lampshade, the infrared high-temperature lamp is started to irradiate the plastic bottle, and under the action of the lampshade, the lamp light of the infrared high-temperature lamp is blocked, so that the infrared high-temperature lamp is prevented from causing excessive radiation to operators; through the arrangement of the lampshade, the energy of the infrared high-temperature lamp is gathered on the inner wall of the lampshade to irradiate the bottle blank, so that the heating effect of the infrared high-temperature lamp on the bottle blank is improved, and the time required for preheating the bottle blank is reduced; the bottle mouth cooling, the bottle blank shaping and the bottle blowing mold cooling are completed in the fixing block in a high-pressure gas mode, the processing of the plastic bottle is completed under the action of compressed gas, the cost of the bottle blowing machine is reduced, and the arrangement of cooling equipment is reduced; after the bottle blank is fixed on the fixing block, the bottle blank does not need to be carried, so that the preheating and bottle blowing treatment can be continuously completed after the bottle blank is matched with the fixing block, a structure which is independently arranged for preheating and bottle blowing is replaced, a bottle blowing station on a bottle blowing machine is added, and the processing efficiency of the plastic bottle is improved; the bottle blowing mold is closed to blow the bottle preform after the bottle preform preheating treatment, so that the heat loss of the bottle preform after preheating is reduced, the process of heat preservation treatment on the bottle preform is omitted, and the energy consumption of the bottle blowing machine is reduced.
Preferably, the preheating temperature in the step (2) is between 90 and 120 ℃; in the interval, PET is in a high elastic state, and becomes a clear bottle after agile blow molding and cooling setting, so that the finished product quality of the plastic bottle is improved.
Preferably, the high-pressure gas is compressed air; the plastic bottle is processed by adopting the compressed air, so that additional gas is not required to be manufactured, the production cost of the plastic bottle is reduced, and the batch production of a factory is facilitated.
Preferably, before the high-pressure gas is filled into the bottle blank in the step (3), the pressure value of the high-pressure gas is between 0.8 and 1 MPa; when the pressure is high, the upper part is heavy and the lower part is light, the center point is inclined, the wall thickness of the foot part is uneven, the foot part is whitish and the like; when the pressure is low, the stretching cannot be fully performed, the bottom is heavy, and the center point is thick.
Preferably, in the step (3), when high-pressure gas is introduced into the bottle embryo for the first time, stretching treatment needs to be carried out on the bottle embryo, wherein the stretching and blowing-up ratio is 3.5-4.2 in the radial direction and 2.8-3.1 in the axial direction; the blow molding process of the bottle blowing machine is a two-way stretching process, in the process, PET chains are extended, oriented and arranged in two directions, so that the mechanical property of the bottle wall is improved, the stretching, tensile and impact strength are improved, and the bottle blowing machine has good air tightness.
Preferably, the wall thickness of the bottle blank is less than or equal to 4.5 mm; the appropriate bottle blank thickness is convenient for blow molding of the bottle blank, and the finished product quality of the plastic bottle is improved.
Preferably, a first movable cavity is arranged in the fixed block, an air injection disc penetrates through the first movable cavity, a second movable cavity is arranged at the bottom of the first movable cavity, a connecting shaft is arranged at the bottom of the air injection disc, the connecting shaft penetrates through the second movable cavity, and a rotating blade for driving the air injection disc to rotate is arranged on the connecting shaft; when bottle blowing processing is carried out on the bottle blank, the connection between the air injection disc and the fixed block is conducted, so that high-pressure gas entering the fixed block enters the air injection disc, bottle blowing processing is carried out on the interior of the bottle blank through the air injection disc, and the shaping of the bottle blank is completed; under rotating vane's setting, make high-pressure air promote rotating vane when the rotating vane, make rotating vane drive the connecting axle and rotate to drive jet-propelled dish and rotate, make and blow high-pressure gas in rotatory in-process toward the bottle embryo, make the high-pressure gas dispersion that enters into in the bottle embryo more even, promote the moulding effect to the plastic bottle.
Preferably, a first air storage cavity is arranged below the second movable cavity, an installation groove is formed in the inner wall of the first air storage cavity, and a sealing plate assembly is arranged in the installation groove; the high-pressure gas introduced into the fixed block is stored in the first gas storage cavity, and when the bottle blank is heated, the sealing plate assembly is in a closed state, so that the gas in the first gas storage cavity cannot enter the gas jet disc, the heat on the fixed block is taken away under the flowing of the gas, and the bottle mouth is cooled; when bottle blowing processing is carried out on the bottle blank, the sealing plate assembly is opened, so that high-pressure gas in the first gas storage cavity enters the gas spraying disc, the high-pressure gas is sprayed into the bottle blank, and the molding processing of the bottle blank is completed.
Preferably, a first air conveying cavity is arranged below the first air storage cavity, the first air conveying cavity is of a thread-shaped structure, the bottom of the first air conveying cavity is provided with an air inlet pipe communicated with the first air conveying cavity, and the air inlet pipe is communicated with an infusion pipe; the first air transmission cavity is communicated with the first air storage cavity, and a first through hole is formed in the bottom of the first air storage cavity; the contact area of the gas and the fixed block is increased through the thread-shaped structure of the first gas transmission cavity, so that part of heat on the fixed block is taken away when the gas flows in the first gas transmission cavity, and the phenomenon that the temperature at the position of the bottle opening of the bottle blank is too high and the bottle opening is cooled is avoided; when the fixed block is cooled by high-pressure gas, cooling liquid is introduced into the first gas transmission cavity through the liquid conveying pipe, so that the cooling liquid forms liquid drops under the action of the high-pressure gas, and the cooling effect of the gas on the fixed block is improved along with the movement of the high-pressure gas in the first gas transmission cavity; when the gas entering the first gas storage cavity from the first gas transmission cavity cannot enter the gas spraying disc, the gas flows out from the first through hole in the bottom of the first gas storage cavity, so that the gas forms circular flow, the phenomenon that the pressure in the first gas storage cavity is too high due to the fact that too much gas is introduced into the first gas storage cavity is avoided, the fixed block is protected, the gas entering the first gas storage cavity carries heat on the fixed block to be discharged from the first through hole, and a good cooling effect is achieved on the fixed block.
Preferably, a first supporting plate is sleeved on the fixed block, a first sliding groove is formed in the side wall of the fixed block, and a first sliding block matched with the first sliding groove is arranged on the first supporting plate; the top of the fixed block is provided with an exhaust hole, the bottom of the exhaust hole is provided with a second air storage cavity, the bottom of the second air storage cavity is provided with a second air transmission cavity communicated with the second air storage cavity, the first supporting plate is provided with a lug, the lug is provided with a third air transmission cavity communicated with the second air transmission cavity, and the bottle blowing mold is internally provided with a groove matched with the lug; the first sliding chute is matched with the first sliding block, so that the first supporting plate can move on the fixed block conveniently, and when the bottle blank is sleeved on the fixed block, the first supporting plate provides supporting force for the bottle blank, so that the bottle blank can be fixed conveniently; under the action of the first supporting plate, the bottle blanks are conveniently pushed out of the fixing block, so that finished plastic bottles are conveniently collected; through mutually supporting of lug and recess, when accomplishing the moulding of plastic bottle and cooling the plastic bottle, let in the gas in the plastic bottle inside the bottle blowing mould, make gas discharge again after blowing the bottle mould is inside, make the gas take away at the partial heat that flows in-process in the bottle blowing mould, play the cooling effect to the bottle blowing mould, the quick cooling of the plastic bottle of being convenient for.
The invention has the following advantages: after the bottle blank is fixed on the fixing block, the bottle blank does not need to be carried, so that the bottle blank can be continuously preheated and blown by the bottle after being matched with the fixing block, the bottle blowing stations on a bottle blowing machine are increased, and the processing efficiency of the plastic bottle is improved; the bottle blowing mold is closed to blow the bottle preform after the bottle preform preheating treatment, so that the heat loss of the bottle preform after preheating is reduced, the process of heat preservation treatment on the bottle preform is omitted, and the energy consumption of the bottle blowing machine is reduced.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the fixing block of the present invention.
Fig. 3 is a first cross-sectional view of the fixing block of the present invention.
Fig. 4 is a second cross-sectional view of the fixing block of the present invention.
Fig. 5 is a third schematic sectional view of the fixing block of the present invention.
Fig. 6 is a fourth schematic sectional view of the fixing block of the present invention.
Fig. 7 is a bottom view of the fixing block of the present invention.
FIG. 8 is a schematic structural diagram of the jet disk of the present invention.
FIG. 9 is a schematic cross-sectional view of a jet disk of the present invention.
FIG. 10 is a schematic cross-sectional view of a bottle blowing mold according to the present invention.
FIG. 11 is a schematic sectional view of an infrared high-temperature lamp according to the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A processing technology of a plastic bottle comprises the following steps: (1) sleeving the bottle blank on a fixed block of a bottle blowing machine, and fixing the bottle blank; the wall thickness of the bottle blank is less than or equal to 4.5 mm; (2) operating the lampshade of the infrared high-temperature lamp to descend, so that the lampshade is sleeved on the bottle blank to irradiate the bottle blank, and performing preheating treatment on the bottle blank; the preheating temperature is between 90 and 120 ℃; introducing high-pressure gas and cooling liquid into the fixed block to cool the bottle mouth; the high-pressure gas is compressed air; (3) after the bottle preform is preheated, the lampshade is lifted, the bottle blowing mold is controlled to move to the bottle preform, and the bottle preform is wrapped in the bottle blowing mold; conducting the fixed block and the interior of the bottle blank, and introducing high-pressure gas into the bottle blank to perform bottle blowing operation on the bottle blank; when high-pressure gas is introduced into the bottle embryo hiccup for the first time, stretching treatment needs to be carried out on the bottle embryo, the stretching and blowing-up ratio is 3.5-4.2 in the radial direction and 2.8-3.1 in the axial direction; before filling high-pressure gas into the bottle blank, the pressure value of the high-pressure gas is between 0.8 and 1 MPa; (4) after the bottle blowing is finished, the exhaust pipe and the bottle blowing mold are communicated, and high-pressure gas is introduced into the interior of the bottle blowing mold to rapidly cool the bottle blowing mold and the plastic bottle; (5) and rotating the fixed block by a certain angle, and ejecting the plastic bottle from the fixed block under the action of the cylinder to finish the processing of the plastic bottle.
As shown in fig. 1 to 11, a first movable cavity 13 is arranged in the fixed block 1, an air injection disc 4 is arranged in the first movable cavity 13 in a penetrating manner, a second movable cavity 120 is arranged at the bottom of the first movable cavity 13, a connecting shaft 42 is arranged at the bottom of the air injection disc 4, the connecting shaft 42 is arranged in the second movable cavity 120 in a penetrating manner, and a rotating blade 44 for driving the air injection disc 4 to rotate is arranged on the connecting shaft 42; the rotating blades are uniformly arranged on the side wall of the connecting shaft in a plurality of pieces; when bottle blowing processing is carried out on the bottle blank, the connection between the air injection disc and the fixed block is conducted, so that high-pressure gas entering the fixed block enters the air injection disc, bottle blowing processing is carried out on the interior of the bottle blank through the air injection disc, and the shaping of the bottle blank is completed; under rotating vane's setting, make high-pressure air promote rotating vane when the rotating vane, make rotating vane drive the connecting axle and rotate to drive jet-propelled dish and rotate, make and blow high-pressure gas in rotatory in-process toward the bottle embryo, make the high-pressure gas dispersion that enters into in the bottle embryo more even, promote the moulding effect to the plastic bottle.
A first air storage cavity 15 is arranged below the second movable cavity 120, an installation groove 151 is formed in the inner wall of the first air storage cavity 15, and a sealing plate assembly is arranged in the installation groove 151; the sealing plate assembly comprises a mounting seat 17, a sealing plate 18 and a sealing spring 172 which are arranged in the mounting groove, a third movable cavity 171 is arranged in the sealing seat, the sealing spring is arranged in the third movable cavity, one end of the sealing spring is connected with the inner wall of the third movable cavity, the other end of the sealing spring is connected with the sealing plate, the sealing plate is made of a magnetic material, and an electromagnet is arranged at the bottom of the third movable cavity; the two groups of sealing plate assemblies are symmetrically arranged in the first gas storage cavity; the two groups of sealing plate assemblies are mutually matched to seal the first air storage cavity, so that the fixing block is conveniently cooled by airflow; the high-pressure gas introduced into the fixed block is stored in the first gas storage cavity, and when the bottle blank is heated, the sealing plate assembly is in a closed state, so that the gas in the first gas storage cavity cannot enter the gas jet disc, the heat on the fixed block is taken away under the flowing of the gas, and the bottle mouth is cooled; when bottle blowing processing is carried out on bottle blanks, the electromagnet generates magnetic force after being electrified, suction force is generated on the sealing plates, the sealing plates are sucked into the third movable cavity under the action of the magnetic force, the two groups of sealing plates are separated from contact, the sealing plate assembly is opened, high-pressure gas in the first gas storage cavity enters the gas spraying disc, and therefore the high-pressure gas is sprayed into the bottle blanks, and the shaping processing of the bottle blanks is completed.
A first air conveying cavity 16 is arranged below the first air storage cavity 15, the first air conveying cavity 16 is of a thread structure, the first air conveying cavity is arranged on four sides inside the fixed block, an air inlet pipe 6 communicated with the first air conveying cavity 16 is arranged at the bottom of the first air conveying cavity 16, and the air inlet pipe 6 is communicated with an infusion pipe 7; the air inlet pipe is connected with an air compressor, and the air compressor provides compressed air for the air inlet pipe; the infusion tube is connected with a cooling liquid pool, and the cooling in the cooling liquid pool can be sent into the infusion tube under the action of the water pump; a first electromagnetic valve is arranged in the air inlet pipe, and a second electromagnetic valve is arranged in the infusion pipe; the first air transmission cavity 16 is communicated with the first air storage cavity 15, a first through hole 19 is formed in the bottom of the first air storage cavity 15, a first exhaust pipe 8 is arranged at the bottom of the fixing plate and matched with the first through hole, and a third electromagnetic valve is arranged in the first exhaust pipe; the contact area of the gas and the fixed block is increased through the thread-shaped structure of the first gas transmission cavity, so that part of heat on the fixed block is taken away when the gas flows in the first gas transmission cavity, and the phenomenon that the temperature at the position of the bottle opening of the bottle blank is too high and the bottle opening is cooled is avoided; when the fixed block is cooled by high-pressure gas, cooling liquid is introduced into the first gas transmission cavity through the liquid conveying pipe, so that the cooling liquid forms liquid drops under the action of the high-pressure gas, and the cooling effect of the gas on the fixed block is improved along with the movement of the high-pressure gas in the first gas transmission cavity; when the gas entering the first gas storage cavity from the first gas transmission cavity cannot enter the gas spraying disc, the gas flows out from the first through hole in the bottom of the first gas storage cavity, so that the gas forms circular flow, the phenomenon that the pressure in the first gas storage cavity is too high due to the fact that too much gas is introduced into the first gas storage cavity is avoided, the fixed block is protected, the gas entering the first gas storage cavity carries heat on the fixed block to be discharged from the first through hole, and a good cooling effect is achieved on the fixed block.
A first supporting plate 2 is sleeved on the fixed block 1, a first sliding groove 11 is formed in the side wall of the fixed block 1, and a first sliding block matched with the first sliding groove 11 is arranged on the first supporting plate 2; the inner wall of the first sliding chute is provided with a return spring 111, and after the first supporting plate moves upwards along the first sliding chute, the first supporting plate falls downwards to an initial position under the action of the gravity of the return spring and the first supporting plate, so that a supporting effect is provided for the bottle blank; the top of the fixed block 1 is provided with an exhaust hole 12, the bottom of the exhaust hole 12 is provided with a second air storage cavity 14, the bottom of the second air storage cavity 14 is provided with a second air transmission cavity 110 communicated with the second air storage cavity 14, the first support plate 2 is provided with a lug 21, the lug 21 is provided with a third air transmission cavity 211 communicated with the second air transmission cavity 110, the bottom of the lug is provided with a second exhaust pipe 9 communicated with the third air transmission cavity, and a fourth electromagnetic valve is arranged in the second exhaust pipe; a groove a43 matched with the lug 21 is formed in the bottle blowing die a 4; a fourth air conveying cavity 44 is formed in the bottle blowing mold, a fifth electromagnetic valve is arranged in the fourth air conveying cavity, the fourth air conveying cavity is communicated with the inner wall of the groove, and the fourth air conveying cavity is S-shaped, so that the time of air in the bottle blowing mold is increased, partial heat on the bottle blowing mold is taken away when the air flows, and the bottle blowing mold is rapidly cooled; the side wall of the bottle blowing mold is provided with an air outlet a45 which is arranged at the top of the fourth air transmission cavity and communicated with the fourth air transmission cavity, and air enters the fourth air transmission cavity from the groove and then is discharged from the air outlet; the first sliding chute is matched with the first sliding block, so that the first supporting plate can move on the fixed block conveniently, and when the bottle blank is sleeved on the fixed block, the first supporting plate provides supporting force for the bottle blank, so that the bottle blank can be fixed conveniently; under the action of the first supporting plate, the bottle blanks are conveniently pushed out of the fixing block, so that finished plastic bottles are conveniently collected; through mutually supporting of lug and recess, when accomplishing the moulding of plastic bottle and cooling the plastic bottle, let in the gas in the plastic bottle inside the bottle blowing mould, make gas discharge again after blowing the bottle mould is inside, make the gas take away at the partial heat that flows in-process in the bottle blowing mould, play the cooling effect to the bottle blowing mould, the quick cooling of the plastic bottle of being convenient for.
A push plate 45 is arranged at the bottom of the connecting shaft, the diameter of the push plate is smaller than that of the second movable cavity, a first limiting plate 43 is arranged above the rotating blade, the first limiting plate is sleeved on the connecting shaft, a second through hole 431 is formed in the first limiting plate, an air inlet hole 46 matched with the second through hole is formed in the bottom of the air injection disc, a third through hole 47 communicated with the air inlet hole is formed in the side wall of the air injection disc, the third through hole is obliquely arranged, and the top of the fourth through hole is arranged at the top of the; a second supporting plate matched with the first limiting plate is arranged on the inner wall of the second movable cavity and provides supporting force for the connecting shaft; the bottom of the first movable cavity is provided with a fourth through hole, the connecting shaft penetrates through the fourth through hole, the diameter of the fourth through hole is smaller than the diameter of the second movable cavity, the first limiting plate is further provided with a plurality of balls 432, and the friction force between the first limiting plate and the inner wall of the second movable cavity can be reduced through the balls; a second limiting plate 41 is arranged on the side wall of the air injection disc and matched with the first movable cavity, so that the air injection disc is prevented from falling out of the first movable cavity; one side of the bottle blowing mold is provided with a hydraulic cylinder a42 which can push the bottle blowing mold to move; the bottle blowing molds are divided into two groups and are respectively arranged on the left side and the right side of the supporting block.
After the bottle preform is preheated, the left bottle blowing die and the right bottle blowing die are pushed to be matched with each other under the action of the hydraulic cylinder, and the bottle preform and the fixed block are fixed inside the bottle blowing dies; the electromagnet is powered on to enable the electromagnet to generate magnetism, the sealing plate is sucked into the second movable cavity under the action of the magnetic force, the second movable cavity and the first air storage cavity are in a conducting state, the second electromagnetic valve and the third electromagnetic valve are closed, high-pressure gas is introduced into the first air storage cavity through the air inlet pipe, the high-pressure gas in the first air storage cavity moves into the second movable cavity, the push plate is pushed to move upwards under the action of air pressure, the push plate pushes the air injection disc to move upwards, the top of the third through hole is higher than the first movable cavity, the top of the air injection disc enters the bottle blank, the first limiting plate moves to be in contact with the top of the second movable cavity under the action of the push plate, and the air injection disc cannot continuously rise after the second limiting plate moves to be in contact with the top of the first movable cavity; the air flow moves upwards through the gap between the push plate and the second movable cavity, the rotating blade is pushed to drive the air injection disc to rotate, the air flow passing through the rotating blade enters the air injection disc through the second through hole and the air inlet hole and is injected out of the third through hole, the air flow moves towards the top of the bottle blank due to the inclined arrangement of the third through hole, and the air flow enters the bottle blank more uniformly under the rotation of the air injection disc; when the pressure in the bottle blank is too high, the air flow in the bottle blank enters the second air storage cavity through the air exhaust hole, the fifth electromagnetic valve is in a closed state, the air flow enters the second air exhaust pipe along the third air storage cavity, the pressure relief effect is achieved through the second air exhaust pipe, and the bottle blank is prevented from being damaged due to the fact that the air pressure in the bottle blank is too high.
After the molding of bottle embryo is accomplished, the intake pipe continues to ventilate, the fifth solenoid valve is opened, the fourth solenoid valve is closed, the lug inserts in the recess when the bottle blowing mould is close to each other, make the gas of following exhaust in the bottle embryo enter into the fourth gas transmission intracavity along third gas transmission chamber, flow through the air current takes away the partial heat on the bottle blowing mould, make the quick cooling of bottle blowing mould, thereby make the quick cooling of bottle embryo, carry out rational utilization to high-pressure gas, reduce the energy consumption of bottle blowing machine.
The infrared high-temperature lamp 5 is arranged above the fixed block, a connecting rod 52 is arranged on the infrared high-temperature lamp, and the infrared high-temperature lamp is connected to the bottle blowing machine through the connecting rod; the infrared high-temperature lamp is sleeved with a lampshade 53, the inner wall of the lampshade is provided with a reflector, the lampshade is connected to a bottle blowing machine through a hydraulic cylinder, the inner wall of the lampshade is provided with a second chute 531, the side wall of the infrared high-temperature lamp is provided with a second slide block 51 matched with the second chute, and the lampshade is positioned through the mutual matching of the second chute and the second slide block, so that the lampshade is always covered on the infrared high-temperature lamp when the lampshade descends; when bottle blanks are preheated, the bottle blanks are fixed on the fixing block, the hydraulic cylinder drives the lampshade to move downwards, the lampshade moves downwards along the infrared high-temperature lamp, the bottle blanks are covered in the lampshade under the action of the lampshade, the infrared high-temperature lamp is started, the bottle blanks are preheated, and under the action of the lampshade, light of the infrared high-temperature lamp is blocked, so that excessive radiation of the infrared high-temperature lamp to operators is avoided; through the mirror surface setting of lamp shade, play the reflex action to infrared ray high temperature lamp, shine the bottle embryo with the energy gathering of infrared ray high temperature lamp in the lamp shade, promote the heating effect of infrared ray high temperature lamp to the bottle embryo, make the bottle embryo be heated more evenly, it is long when required to reduce the bottle embryo to preheat.
A mounting plate 3 is arranged below the fixed block, the mounting plate is connected with the fixed block through a supporting rod, the air inlet pipe, the infusion pipe, the first exhaust pipe and the second exhaust pipe are all arranged on the mounting plate in a penetrating mode, an air cylinder 33 is arranged on the mounting plate, and an air cylinder piston rod is connected with the bottom of the supporting plate; the bottom of the mounting plate is provided with a connecting block 31, the side wall of the connecting block is provided with a connecting groove 311, and the mounting plate is hinged on the bottle blowing machine through the connecting block; after the plastic bottles are cooled, stopping blowing air into the plastic bottles, starting a bottle blowing mold, enabling an installation plate to drive a fixed block to incline for a certain angle through the movable link of the installation plate and a bottle blowing machine, then starting the air cylinder to work to push a support plate to move upwards, enabling the support plate to push the plastic bottles to move upwards to push the plastic bottles out of the fixed block, and facilitating collection of the plastic bottles; the cylinder drives the piston rod to contract, the supporting plate resets under the gravity of the reset spring and the self, and the driving mounting plate is restored to be in a vertical state, so that the next bottle blank is processed conveniently.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. A processing technology of plastic bottles is characterized in that: the method comprises the following steps:
(1) sleeving the bottle blank on a fixed block of a bottle blowing machine, and fixing the bottle blank;
(2) operating the lampshade of the infrared high-temperature lamp to descend, so that the lampshade is sleeved on the bottle blank to irradiate the bottle blank, and performing preheating treatment on the bottle blank; introducing high-pressure gas and cooling liquid into the fixed block to cool the bottle mouth;
(3) after the bottle preform is preheated, the lampshade is lifted, the bottle blowing mold is controlled to move to the bottle preform, and the bottle preform is wrapped in the bottle blowing mold; conducting the fixed block and the interior of the bottle blank, and introducing high-pressure gas into the bottle blank to perform bottle blowing operation on the bottle blank; when bottle blowing processing is carried out on the bottle blank, high-pressure gas entering the fixed block enters the bottle blank for bottle blowing processing, and the bottle blank is shaped;
(4) after the bottle blowing is finished, the exhaust pipe and the bottle blowing mold are communicated, and high-pressure gas is introduced into the interior of the bottle blowing mold to rapidly cool the bottle blowing mold and the plastic bottle;
(5) and rotating the fixed block by a certain angle, and ejecting the plastic bottle from the fixed block under the action of the cylinder to finish the processing of the plastic bottle.
2. A process for the manufacture of plastic bottles according to claim 1, wherein: the preheating temperature in the step (2) is between 90 and 120 ℃.
3. A process for the manufacture of plastic bottles according to claim 1, wherein: the high-pressure gas is compressed air.
4. A process for the manufacture of plastic bottles according to claim 1, wherein: and (4) before the high-pressure gas is filled into the bottle blank in the step (3), the pressure value of the high-pressure gas is between 0.8 and 1 MPa.
5. A process for the manufacture of plastic bottles according to claim 1, wherein: and (3) when high-pressure gas is introduced into the bottle blank for the first time, stretching the bottle blank, wherein the stretching blow-up ratio is 3.5-4.2 in the radial direction and 2.8-3.1 in the axial direction.
6. A process for the manufacture of plastic bottles according to claim 1, wherein: the wall thickness of the bottle blank is less than or equal to 4.5 mm.
7. A process for the manufacture of plastic bottles according to claim 1, wherein: be equipped with first activity chamber (13) in fixed block (1), wear to be equipped with in first activity chamber (13) and spout dish (4), first activity chamber (13) bottom is equipped with second activity chamber (120), it is equipped with connecting axle (42) to spout dish (4) bottom, connecting axle (42) are worn to locate in second activity chamber (120), be equipped with on connecting axle (42) and be used for the drive spout dish (4) pivoted rotating vane (44).
8. The process for processing a plastic bottle according to claim 7, wherein: the gas storage device is characterized in that a first gas storage cavity (15) is arranged below the second movable cavity (120), a mounting groove (151) is formed in the inner wall of the first gas storage cavity (15), and a sealing plate assembly is arranged in the mounting groove (151).
9. The process for processing a plastic bottle according to claim 8, wherein: a first air conveying cavity (16) is arranged below the first air storage cavity (15), the first air conveying cavity (16) is of a thread structure, an air inlet pipe (6) communicated with the first air conveying cavity (16) is arranged at the bottom of the first air conveying cavity (16), and the air inlet pipe (6) is communicated with an infusion pipe (7); the first air transmission cavity (16) is communicated with the first air storage cavity (15), and a first through hole (19) is formed in the bottom of the first air storage cavity (15).
10. A process for the manufacture of plastic bottles according to claim 9, wherein: a first supporting plate (2) is sleeved on the fixed block (1), a first sliding groove (11) is formed in the side wall of the fixed block (1), and a first sliding block matched with the first sliding groove (11) is arranged on the first supporting plate (2); the improved bottle blowing mold is characterized in that an exhaust hole (12) is formed in the top of the fixed block (1), a second air storage cavity (14) is formed in the bottom of the exhaust hole (12), a second air transmission cavity (110) communicated with the second air storage cavity (14) is formed in the bottom of the second air storage cavity (14), a protruding block (21) is arranged on the first supporting plate (2), a third air transmission cavity (211) communicated with the second air transmission cavity (110) is formed in the protruding block (21), and a groove (a43) matched with the protruding block (21) is formed in the bottle blowing mold.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811533264.8A CN109383005B (en) | 2018-12-14 | 2018-12-14 | Processing technology of plastic bottle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811533264.8A CN109383005B (en) | 2018-12-14 | 2018-12-14 | Processing technology of plastic bottle |
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| CN109383005A CN109383005A (en) | 2019-02-26 |
| CN109383005B true CN109383005B (en) | 2020-11-17 |
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|---|---|
| CN109383005A (en) | 2019-02-26 |
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Effective date of registration: 20201029 Address after: 317608 Pharmaceutical Packaging Industrial Park, Yuhuan, Taizhou, Zhejiang Applicant after: Taizhou Tianhua Plastic Machinery Co.,Ltd. Address before: 317000 Tingshan Village, Yanjiang Town, Linhai City, Zhejiang Province Applicant before: ZHEJIANG CHANGYI PLASTIC INDUSTRY Co.,Ltd. |
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