CN112776309B - Cooling mechanism of PET bottle blank mould - Google Patents
Cooling mechanism of PET bottle blank mould Download PDFInfo
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- CN112776309B CN112776309B CN202110140081.5A CN202110140081A CN112776309B CN 112776309 B CN112776309 B CN 112776309B CN 202110140081 A CN202110140081 A CN 202110140081A CN 112776309 B CN112776309 B CN 112776309B
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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
- B29C49/48—Moulds
- B29C49/4823—Moulds with incorporated heating or cooling means
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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
- B29C49/48—Moulds
- B29C49/4823—Moulds with incorporated heating or cooling means
- B29C2049/4825—Moulds with incorporated heating or cooling means for cooling moulds or mould parts
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a cooling mechanism of a PET bottle blank mold, which comprises a main body, two groups of molds, a mold cavity, a groove, a butt joint table, a cooling device and a liquid changing device, wherein the main body is provided with a first mold cavity and a second mold cavity; the cooling device comprises a cooling box, a cooling cavity, a return spring, a liquid storage cavity, a driving roller, a driving spring, a driving assembly, a cooling pipe, an inclined hole and a liquid storage box; the cooling mechanism is used for cooling the plurality of mold cavities simultaneously, so that the stability is improved during blow molding, and the blow molding efficiency of the PET bottle blank mold is further improved; the liquid changing device can timely change the cooling liquid which finishes the cooling effect after the cooling is finished, so that the effect of the mold on the blow molding is further improved; the cooling cavity can fully cool the die after blow molding, so that the cooling effect is improved; the driving assembly is arranged to stably attach the mold cavity and the cooling cavity, so that the cooling stability is improved.
Description
Technical Field
The invention belongs to the technical field of PET bottle blank molds, and particularly relates to a cooling mechanism of a PET bottle blank mold.
Background
The mould is various moulds and tools for obtaining required products by injection molding, blow molding, extrusion, die casting or forging forming, smelting, stamping and other methods in industrial production; cooling the PET bottle while it is being blow molded is critical to product formation; in the prior art, cooling liquid is added into a cooling pipe embedded in a mold for cooling; because the blow molding time of PET is short, PET is already molded when the mold is not completely cooled by the cooling liquid, which results in insufficient cooling; meanwhile, the cooling pipes cannot be fully distributed in the whole mold, so that the mold is insufficiently cooled, and the effect of blow molding is influenced.
Disclosure of Invention
The invention provides a cooling mechanism of a PET bottle blank mold, which aims to overcome the defects of the prior art and improve the cooling effect.
In order to achieve the purpose, the invention adopts the following technical scheme: the device comprises a main body, two groups of moulds arranged on the main body, mould cavities respectively arranged on the two groups of moulds, a groove arranged on one group of mould cavities, a butt joint platform arranged on the other group of moulds, a cooling device arranged in the two groups of moulds and a liquid changing device arranged below the moulds; the cooling device comprises a cooling box arranged in the mold, a cooling cavity arranged on the cooling box, a reset spring arranged on the cooling box, a liquid storage cavity arranged in the cooling box, a driving cavity arranged on the inner wall of the mold, a driving roller arranged in the driving cavity, a driving spring arranged on the driving roller, a driving assembly arranged in the driving cavity, a cooling pipe arranged in the cooling box, an inclined hole arranged on the cooling pipe and a liquid storage box arranged in the rear wall of the mold; the cooling box is movably embedded in the mold and is positioned on the side of the mold cavity; the shape of the cooling cavity moves with the mold cavity, and the cooling cavity can be attached to the rear wall of the mold cavity; the reset spring is connected with the cooling box and the inner wall of the mold; the liquid storage cavity is arranged on the inner wall of the cooling box close to the left side; the driving cavity is arranged on the side wall of the mould; the driving roller is movably embedded in the driving cavity; the cooling pipes are arranged in the cooling box and are positioned above the cooling cavity in an inclined manner; the inclined hole is formed in the cooling pipe and is directly opposite to the rear wall of the cooling cavity; the liquid storage box is divided into an upper layer and a lower layer and is arranged in the rear wall of the mold; the driving spring is connected with the driving roller and the inner wall of the driving cavity.
Before working, the cooling liquid is filled into the liquid storage box; before blow molding, the two groups of molds are combined, and the groove and the butt joint platform are buckled when the two groups of molds are combined, so that the mold closing of the mold cavity is realized; then the driving roller drives the driving assembly to start, so that the cooling box moves in the mold, and cooling liquid enters the cooling cavity from the liquid storage cavity in the moving process; the further cooling cavity is attached to the back of the mold cavity; when blow molding is started, the cooling cavity is attached to the back of the mold cavity, so that the PET plastic is cooled during blow molding; after the blow molding is finished, under the action of a liquid changing device, the cooled cooling liquid is exchanged with the cooling liquid in the liquid storage box; the die assembly of the die cavity is realized through the arrangement of the groove and the butt joint table, the appearance of the PET blow molding is improved to be cleaner and tidier, and the quality of a finished product is improved; the cooling box is arranged to realize the separation and the attachment of the cooling cavity and the mold cavity, so that the mold cavity is cooled during blow molding; the mold cavity can be recovered to normal temperature during unloading, so that the influence of uneven surface temperature of the mold cavity on the blow molding effect is prevented; the cooling cavity can be completely attached to the mold cavity, so that the cooling liquid can be fully contacted with the mold cavity, and the cooling effect of the mold is improved; the quality of the product is further improved; through the arrangement of the cooling pipe and the inclined hole, the surface of the cooling cavity can be washed when cooling liquid can enter the cooling cavity, so that the cooling cavity can be cooled down first, and the cooling efficiency is improved; the liquid storage cavity is arranged to realize the exchange of the cooling liquid in the cooling box, so that the temperature of the cooling liquid is always kept in the optimal state, and the cooling effect of the mold is further improved; the device can make the mould carry out abundant cooling to the mould chamber when carrying out the blowing through setting up, has further improved the blow molding stability of product.
The driving assembly comprises a first rack arranged on the driving roller, a second rack arranged on the side wall of the cooling box, a gear arranged in the driving cavity, a gear torsion spring arranged on the gear, a liquid inlet pipe arranged on the cooling box, a first one-way valve arranged on the liquid inlet pipe, a liquid inlet plate arranged on the liquid inlet pipe, a liquid inlet spring arranged on the liquid inlet plate and a second one-way valve arranged on the liquid storage cavity; the first rack is fixedly arranged on the driving roller; the second rack is arranged on the side wall of the cooling box and movably embedded in the side wall of the cooling box; the gear is rotatably embedded in the driving cavity and can be respectively meshed with the first rack and the second rack; the gear torsion spring is connected with the gear and the bottom of the driving cavity; one end of the liquid inlet pipe is arranged in the upper layer of the liquid storage box, and the other end of the liquid inlet pipe is positioned in the liquid storage cavity and can be movably embedded with the cooling box; the first single valve is arranged at one end of the liquid inlet pipe and points to the liquid storage cavity; the liquid inlet plate is arranged at one end of the liquid inlet pipe and movably embedded in the liquid storage cavity; the liquid inlet spring is connected with the liquid inlet plate and the inner wall of the liquid storage cavity; the second single valve is arranged on the side wall of the liquid storage cavity and communicated with the cooling pipe.
When the die is closed, the driving roller drives the first rack to move and drives the gear to rotate; then the second rack is driven to move under the driving of the gear, and the cooling box is further driven to move towards the mold cavity until the cooling box is attached to the rear wall of the mold cavity; when the die box moves, the liquid storage cavity generates hydraulic pressure under the action of the liquid inlet plate, and cooling liquid on one side of the liquid inlet plate is squeezed into the cooling cavity from the first single valve; meanwhile, cooling in the liquid storage box enters the other side of the liquid inlet plate through the liquid inlet pipe for storage; the cooling box can move under the driving of the gear through the arrangement of the first rack and the second rack, so that the cooling box can move stably, and the cooling stability is improved; the gear can generate rotating resistance through the arrangement of the gear torsion spring, so that the stability of the movement of the first rack and the second rack is improved; through the arrangement of the liquid inlet pipe and the second single valve, the cooling liquid in the liquid storage box can be supplied to the liquid storage cavity when the cooling box approaches the mold cavity, so that preparation is made for the next cooling; the cooling stability is improved; on one hand, hydraulic pressure is generated in the liquid storage cavity through the arrangement of the liquid inlet plate, so that cooling liquid enters the cooling cavity to be cooled, and the cooling stability is improved; on the other hand, the liquid storage cavity is divided into two cavities to be separated from the supplied cooling liquid, and the storage stability of the cooling liquid is improved.
The liquid changing device comprises a convection groove arranged on the side edge of the mold, a third single valve and a fourth single valve arranged on the inner wall of the convection groove, a flow discharging pipe communicated with the lower layers of the cooling box and the liquid storage box, a fifth single valve arranged on the flow discharging pipe, an air pressure cavity arranged in the side wall of the mold, an air pressure roller arranged in the air pressure cavity, and an air pressure assembly arranged in the air pressure cavity; the convection groove is formed in the side edge of the mold and is positioned on one side of the liquid storage box; the third single valve is arranged on the convection groove and positioned at the lower layer of the liquid storage box; the third single-phase valve is directed to the convection groove; the fourth single valve is arranged on the convection groove and positioned on the upper layer of the liquid storage box; the fourth single valve points to the upper layer of the liquid storage box; the flow discharging pipe is arranged at the lower layer of the cooling box and the liquid storage box and is movably embedded with the cooling box; the fifth single valve is arranged on the flow discharge pipe and points to the lower layer of the liquid storage box; the air pressure cavity is arranged in the side wall of the mould and is positioned right below the driving cavity; the air pressure roller is movably embedded in the air pressure cavity and is positioned right below the driving roller.
When the two molds are separated, under the action of the air pressure assembly, the cooling liquid in the cooling cavity enters the lower layer of the liquid storage box through the flow discharge pipe; meanwhile, in the blow molding process, when the cooling box is close to the mold cavity, the cooling liquid in the lower layer of the liquid storage box is extruded into the convection groove under the action of the air pressure assembly for storage; the device can suck the cooling liquid in the cooling cavity into the lower layer of the liquid storage box when the die is separated through the air pressure group; when the molds are combined, the cooling liquid in the lower layer of the liquid storage box is filled into the convection groove, so that the exchange stability of the cooling liquid is improved, the quality of the cooling liquid is further ensured, the cooling liquid continuously ensures the optimal cooling temperature, and the cooling effect is further ensured; the temporary storage of the cooling liquid is realized through the arrangement of the flow grooves, and the temperature of the cooling liquid is further ensured to be in the optimal cooling state, so that the cooling effect is improved.
The pneumatic assembly comprises a ratchet bar arranged on the pneumatic roller, a rotary rod arranged on the side wall of the pneumatic cavity, a rotary torsion spring arranged on the rotary rod, a latch arranged at one end of the rotary rod, a support block arranged at the other end of the rotary rod, a rotary column arranged on the pneumatic cavity, a torsion spring arranged on the rotary column, a ratchet wheel arranged on the rotary column, a piston plate arranged in the lower layer of the liquid storage box, a piston spring arranged on the piston plate and a linkage piece arranged in the lower layer of the liquid storage box; the ratchet bar is fixedly arranged on the air pressure roller; the rotating rod is embedded in the inner wall of the air pressure cavity in a turnover way; the rotary torsion spring is connected with the rotary rod and the side wall of the air pressure cavity and is positioned at the middle point of the rotary rod; the latch is arranged at one end of the rotating rod and can be buckled with the ratchet wheel; the cross section of the abutting block is trapezoidal, can abut against the air pressure roller and is arranged at the other end of the rotating rod; the rotating column is rotatably embedded on the inner wall of the air pressure cavity; the torsion spring is connected with the rotating column and the inner wall of the air pressure cavity; the ratchet gear is arranged on the rotating column and can be meshed with the ratchet bar; the piston plate is movably embedded in the lower layer of the liquid storage box; the piston spring is connected with the piston plate and the inner wall of the liquid storage box.
When the two molds are combined, the press rollers are pressed against each other to drive the ratchet bar to move; then the ratchet gear is driven to rotate; when the air pressure roller moves, the air pressure roller abuts against the abutting block so as to drive the rotating rod to turn over, and therefore the clamping teeth are clamped with the ratchet wheel; further, the rotating column stores force through a torsion spring; when the air pressure roller moves, air pressure generated in the air pressure cavity drives the linkage assembly to extrude the cooling liquid in the lower layer of the liquid storage box into the convection groove; the ratchet gear can be driven to rotate through the arrangement of the ratchet bar, and the ratchet gear cannot be reset when the ratchet bar is reset, so that the drive of the linkage piece cannot be influenced by the pneumatic roller; the driving stability of the linkage member is improved, and the stability of liquid change of the cooling liquid is further improved; the ratchet and the ratchet gear can be buckled through the lever principle by arranging the rotating rod, so that the ratchet gear is limited, and the driving stability of the linkage piece is improved; further improving the cooling stability and ensuring the product quality.
The linkage piece comprises a first telescopic block arranged on the inner wall of the lower layer of the liquid storage box, a belt pulley arranged on the side wall of the first telescopic block, a synchronous belt arranged on the belt pulley, a first connecting block arranged on the synchronous belt, a second telescopic block arranged in the first telescopic block, a second connecting block arranged on the second telescopic block, a fixed pulley arranged in the air pressure cavity, a connecting rope for connecting the first telescopic block and the rotary column, a connecting rod for connecting the second telescopic block and the piston plate, and a movable pulley arranged on the telescopic connecting rope; the first telescopic block is movably embedded on the inner wall of the lower layer of the liquid storage box; the belt pulley is rotatably embedded on the inner wall of the first telescopic block; the telescopic synchronous belt is connected with the two belt pulleys and movably embedded on the inner wall of the first telescopic block; one end of the telescopic first connecting block is fixedly arranged on the inner wall of the lower layer of the liquid storage box, and the other end of the telescopic first connecting block is fixedly arranged on the telescopic synchronous belt; the second telescopic block is movably embedded in the first telescopic block; the second connecting block is connected with the synchronous belt and the outer wall of the second telescopic block; the fixed pulley is rotatably embedded on the inner wall of the air pressure cavity; one end of the connecting rope is fixedly arranged on the first telescopic block, and the other end of the connecting rope is wound on the rotating column around the fixed pulley; the connecting rod is connected with the second telescopic block and the piston plate; the movable pulley is arranged on the connecting rope.
When the molds are combined, the rotary column starts to extend the connecting rope under the linkage of the ratchet bar, so that the piston plate can move in the lower layer of the liquid storage box, and the cooling liquid is extruded to enter the convection groove; when the die is separated, the air pressure roller and the clamping teeth are reset; the rotating column automatically rotates under the action of the torsion spring to start to tighten the connecting rope; firstly, the connecting rope pulls the second telescopic block to move, and meanwhile, the first connecting block drives the synchronous belt to start moving; the second telescopic block is driven by the second connecting block to move on the first telescopic block; then the piston plate is driven to move through the connecting rod, the lower layer of the liquid storage box further generates suction, and the cooling liquid in the cooling cavity is sucked into the lower layer of the liquid storage box; the arrangement of the first telescopic block and the second telescopic block can further prolong the moving formation of the second telescopic block through synchronous driving, so that the moving distance of the piston plate is longer, the cooling liquid in the cooling cavity can be completely sucked into the liquid storage box, and the stability of liquid change is improved; the quality of the cooling liquid is further ensured; the synchronous movement of the first telescopic block and the second telescopic block can be ensured through the arrangement of the synchronous belt, and the phenomenon that the piston plate is moved and clamped to absorb cooling liquid due to the sliding is prevented; the arrangement of the fixed pulley can reduce the friction between the connecting rope and the air pressure chamber wall; the pulling force of connecting the rope can be improved through the setting of movable pulley, guarantees the removal that the piston plate can be stable, further guarantees to absorb the stability of coolant liquid.
In conclusion, the invention has the following advantages: the invention has simple structure and good cooling effect; the cooling mechanism is used for cooling a plurality of mould cavities simultaneously, so that the stability is improved during blow molding, and the blow molding efficiency of the PET bottle blank mould is further improved; the liquid changing device can timely change the cooling liquid which finishes the cooling effect after the cooling is finished, so that the effect of the mold on blow molding is further improved; the cooling cavity can fully cool the die after blow molding, so that the cooling effect is improved; the driving assembly is arranged to enable the die cavity and the cooling cavity to be stably attached, so that the cooling stability is improved.
Drawings
Fig. 1 is a first structural schematic diagram of the present invention.
Fig. 2 is a second structural schematic diagram of the present invention.
Fig. 3 is a schematic structural view of the mold of the present invention.
Fig. 4 is a front view of fig. 3 of the present invention.
FIG. 5 is a cross-sectional perspective view along C-C of FIG. 4 of the present invention.
Fig. 6 isbase:Sub>A cross-sectional view alongbase:Sub>A-base:Sub>A of fig. 4 of the present invention.
Fig. 7 is a cross-sectional view taken along B-B of fig. 4 of the present invention.
Fig. 8 is a partial view of fig. 7 taken at a in accordance with the present invention.
Fig. 9 is a partial view of the invention at B in fig. 7.
Detailed Description
As shown in fig. 1-9, a cooling mechanism for a PET bottle preform mold comprises a main body 1, a mold 2, a mold cavity 21, a groove 3, a docking station 4, a cooling device 5, and a liquid changing device 7; the cooling device 5 comprises a cooling box 51, a cooling cavity 52, a return spring 53, a liquid storage cavity 54, a driving cavity 55, a driving roller 56, a driving spring 590, a driving assembly 6, a cooling pipe 57, an inclined hole 58 and a liquid storage box 59; the die 2 is provided with 2 groups which are movably embedded on the main body 1; a plurality of die cavities 21 are arranged on the die 2; the groove 3 is arranged on the die cavity 21 of one group of dies 2; the butt-joint table 4 is arranged on the mould cavity 21 on the other group of moulds 2, and the butt-joint table 4 and the groove 3 can be in butt joint; the cooling devices 5 are respectively arranged in the 2 groups of the molds 2; the liquid changing devices 7 are respectively arranged in the 2 groups of the dies 2; the cooling box 51 is movably embedded in the mold 2 and is positioned at the side of the mold cavity 21; the cooling cavity 52 is in a shape moving with the mold cavity 21, and the cooling cavity 52 can be attached to the rear wall of the mold cavity 21; the return spring 53 is connected with the cooling box 51 and the inner wall of the mold 2; the liquid storage cavity 54 is arranged on the left side of the inner wall of the cooling box 51; the driving cavity 55 is arranged on the side wall of the mould 2; the drive roller 56 is movably embedded in the drive cavity 55; a plurality of cooling pipes 57 are arranged in the cooling box 51 and are positioned obliquely above the cooling cavity 52; the inclined hole 58 is formed in the cooling pipe 57, and the inclined hole 58 is directed toward the rear wall of the cooling cavity 52; the liquid storage box 59 is divided into an upper layer and a lower layer and is arranged in the rear wall of the mould 2; the driving spring 590 connects the driving roller 56 and the inner wall of the driving chamber 55; the drive assembly 6 is disposed within the drive chamber 55.
As shown in fig. 6, the driving assembly 6 includes a first rack 61, a second rack 62, a gear 63, a gear torsion spring 64, a liquid inlet pipe 65, a first one-way valve 66, a liquid inlet plate 67, a liquid inlet spring 68, and a second one-way valve 69; the first rack 61 is fixedly arranged on the driving roller 56; the second rack 62 is arranged on the side wall of the cooling box 51 and movably embedded in the side wall of the cooling box 51; the gear 63 is rotatably embedded in the driving cavity 55 and can be respectively meshed with the first rack 61 and the second rack 62; the gear torsion spring 64 is connected with the gear 63 and the bottom of the driving cavity 55; one end of the liquid inlet pipe 65 is arranged in the upper layer of the liquid storage box 59, and the other end is positioned in the liquid storage cavity 54 and can be movably embedded with the cooling box 51; the first single valve 66 is arranged at one end of the liquid inlet pipe 65, and the first single valve 66 points to the liquid storage cavity 54; the liquid inlet plate 67 is arranged at one end of the liquid inlet pipe 65, and the liquid inlet plate 67 is movably embedded in the liquid storage cavity 54; a one-way valve is arranged on one side of the second one-way valve 69 of the liquid inlet plate 67; the liquid inlet spring 68 is connected with the liquid inlet plate 67 and the inner wall of the liquid storage cavity 54; the second single valve 69 is provided on a side wall of the liquid storage chamber 54 and communicates with the cooling pipe 57.
As shown in fig. 7, the liquid changing device 7 comprises a convection groove 71, a third single-phase valve 72, a fourth single-phase valve 73, a flow discharging pipe 74, a fifth single-phase valve 75, a pneumatic cavity 76, a pneumatic roller 77 and a pneumatic assembly 8; the convection groove 71 is arranged on the side edge of the mold 2 and is positioned on one side of the liquid storage box 59; the third single valve 72 is arranged on the convection groove 71 and positioned at the lower layer of the liquid storage box 59; the third single-phase valve 72 is directed to the convection groove 71; the fourth single valve 74 is arranged on the convection groove 71 and is positioned at the upper layer of the liquid storage box 59; the fourth one-way valve 74 is directed to the upper layer of the reservoir 59; the flow discharge pipe 74 is arranged at the lower layer of the cooling box 51 and the liquid storage box 59 and is movably embedded with the cooling box 51; the fifth single valve 75 is arranged on the flow discharge pipe 74 and points to the lower layer of the liquid storage box 59; the air pressure cavity 76 is arranged in the side wall of the mould 2 and is positioned right below the driving cavity 55; the air pressure roller 77 is movably embedded in the air pressure cavity 76, and the air pressure roller 77 is positioned right below the driving roller 56; the pneumatic assembly 8 is disposed in the pneumatic chamber 76.
As shown in fig. 8, the pneumatic assembly 8 includes a ratchet 81, a rotating rod 82, a rotating torsion spring 83, a latch 84, an abutting block 85, a rotating column 86, a torsion spring 87, a ratchet gear 88, a piston plate 89, a piston spring 890, and a linkage 9; the ratchet rack 81 is fixedly arranged on the pneumatic roller 77; the rotating rod 82 is embedded in the inner wall of the air pressure cavity 76 in a reversible way; the rotary torsion spring 83 is connected with the rotary rod 82 and the side wall of the air pressure cavity 76, and the rotary torsion spring 83 is positioned at the middle point of the rotary rod 82; the latch 84 is arranged at one end of the rotating rod 82 and can be buckled with a ratchet gear 88; the cross section of the abutting block 85 is trapezoidal, can abut against the air pressure roller 77 and is arranged at the other end of the rotating rod 82; the rotating column 86 is rotatably embedded on the inner wall of the pneumatic cavity 76; the torsion spring 87 is connected with the rotating column 86 and the inner wall of the air pressure cavity 76; the ratchet gear 88 is arranged on the rotating column 86 and can be meshed with the ratchet bar 81; the piston plate 89 is movably embedded in the lower layer of the liquid storage box 59; the piston spring 890 connects the piston plate 89 and the inner wall of the reservoir cartridge 59; the link 9 is provided in the lower layer of the reservoir 59.
As shown in fig. 9, the link 9 includes a first telescopic block 91, a pulley 92, a timing belt 93, a first connecting block 94, a second telescopic block 95, a second connecting block 96, a fixed pulley 97, a connecting rope 98, a connecting rod 99, and a movable pulley 990; the first telescopic block 91 is movably embedded on the lower inner wall of the liquid storage box 59; the belt pulley 92 is rotatably embedded on the inner wall of the first telescopic block 91; the telescopic synchronous belt 93 is connected with the two belt pulleys 92 and movably embedded on the inner wall of the first telescopic block 91; one end of the telescopic first connecting block 94 is fixedly arranged on the lower inner wall of the liquid storage box 59, and the other end of the telescopic first connecting block is fixedly arranged on the telescopic synchronous belt 93; the second telescopic block 95 is movably embedded in the first telescopic block 91; the second connecting block 96 is connected with the synchronous belt 93 and the outer wall of the second telescopic block 95; the fixed pulley 97 is rotatably embedded on the inner wall of the air pressure cavity 76; one end of the connecting rope 98 is fixedly arranged on the first telescopic block 91, and the other end of the connecting rope is wound on the rotating column 86 by bypassing the fixed pulley 98; the connecting rod 99 connects the second telescopic block 95 and the piston plate 89; the movable pulley 990 is disposed on the connection rope 98.
The specific implementation process is as follows: before operation, the liquid storage box 59 is filled with the coolant; before blow molding, the two groups of molds 2 are combined, and the groove 3 and the butt joint table 4 are buckled when the two groups of molds are combined, so that the mold closing of the mold cavity 21 is realized; when the mold 2 is closed, the driving roller 56 drives the first rack 61 to move and simultaneously drives the gear 63 to rotate; then, the second rack 62 is driven to move under the driving of the gear 63, and the cooling box 59 is further driven to move towards the mold cavity 21 until the cooling box is attached to the rear wall of the mold cavity 21; when the die box 59 moves, the liquid inlet plate 67 generates hydraulic pressure in the liquid storage cavity 54, and the cooling liquid on one side of the liquid inlet plate 67 is squeezed into the cooling cavity 52 from the first one-way valve 66; when the blow molding is started, the cooling cavity 52 is attached to the back of the mold cavity 21, so that the PET plastic is cooled during the blow molding; meanwhile, the liquid in the liquid storage box 59 is cooled and enters the other side of the liquid inlet plate 67 through the liquid inlet pipe 65 for storage; meanwhile, when the mold is separated, the air pressure roller 77 and the latch 84 are reset; the rotating column automatically rotates under the action of the torsion spring to start to tighten the connecting rope 98; firstly, the connecting rope pulls the second telescopic block 91 to move, and meanwhile, the first connecting block 94 drives the synchronous belt 93 to start to move; the second telescopic block 95 is driven by the second connecting block 96 to move on the first telescopic block 91; then, the piston plate is driven to move through the connecting rod 99, further suction is generated on the lower layer of the liquid storage box 59, and the cooling liquid in the cooling cavity is sucked into the lower layer of the liquid storage box 59; when the two molds 2 are combined, the pressing rollers 77 are pressed against each other to drive the ratchet bar 81 to move; then drives the ratchet gear 88 to rotate; when the air pressure roller 77 moves, the air pressure roller abuts against the abutting block 85, so that the rotating rod 82 is driven to turn over, and the latch 84 is clamped with the ratchet gear 88; further, the rotating column 86 is charged by a torsion spring 87; when the pneumatic roller 77 moves, air pressure is generated in the pneumatic cavity 76 to drive the linkage assembly to extrude the cooling liquid in the lower layer of the liquid storage box 59 into the convection groove; the exchange of the cooling liquid is realized.
While there have been shown and described what are at present considered to be the basic principles and essential features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.
Claims (4)
1. A cooling mechanism of a PET bottle blank mold comprises a main body (1), two groups of molds (2) arranged on the main body (1), mold cavities (21) respectively arranged on the two groups of molds (2), grooves (3) arranged on one group of mold cavities (21), a butt joint platform (4) arranged on the other group of molds (2), a cooling device (5) arranged in the two groups of molds (2) and a liquid changing device (7) arranged below the molds (2); the method is characterized in that: the cooling device (5) comprises a cooling box (51) arranged in the mold (2), a cooling cavity (52) arranged on the cooling box (51), a return spring (53) arranged on the cooling box (51), a liquid storage cavity (54) arranged in the cooling box (51), a driving cavity (55) arranged on the inner wall of the mold (2), a driving roller (56) arranged in the driving cavity (55), a driving spring (590) arranged on the driving roller (56), a driving assembly (6) arranged in the driving cavity (55), a cooling pipe (57) arranged in the cooling box (51), an inclined hole (58) arranged on the cooling pipe (57), and a liquid storage box (59) arranged in the rear wall of the mold (2); the cooling box (51) is movably embedded in the mold (2) and is positioned at the side of the mold cavity (21); the shape of the cooling cavity (52) moves with the mold cavity (21), and the cooling cavity (52) can be attached to the rear wall of the mold cavity (21); the return spring (53) is connected with the cooling box (51) and the inner wall of the mould (2); the liquid storage cavity (54) is arranged on the left side of the inner wall of the cooling box (51); the driving cavity (55) is arranged on the side wall of the mould (2); the driving roller (56) is movably embedded in the driving cavity (55); the cooling pipes (57) are arranged in the cooling box (51) and are positioned above the cooling cavity (52) in an inclined manner; the inclined hole (58) is formed in the cooling pipe (57), and the inclined hole (58) is directly opposite to the rear wall of the cooling cavity (52); the liquid storage box (59) is divided into an upper layer and a lower layer and is arranged in the rear wall of the die (2); the driving spring (590) is connected with the driving roller (56) and the inner wall of the driving cavity (55);
the driving assembly (6) comprises a first rack (61) arranged on the driving roller (56), a second rack (62) arranged on the side wall of the cooling box (51), a gear (63) arranged in the driving cavity (55), a gear torsion spring (64) arranged on the gear (63), a liquid inlet pipe (65) arranged on the cooling box (51), a first single valve (66) arranged on the liquid inlet pipe (65), a liquid inlet plate (67) arranged on the liquid inlet pipe (65), a liquid inlet spring (68) arranged on the liquid inlet plate (67) and a second single valve (69) arranged on the liquid storage cavity (54); the first rack (61) is fixedly arranged on the driving roller (56); the second rack (62) is arranged on the side wall of the cooling box (51) and movably embedded in the side wall of the cooling box (51); the gear (63) is rotatably embedded in the driving cavity (55) and can be respectively meshed with the first rack (61) and the second rack (62); the gear torsion spring (64) is connected with the gear (63) and the bottom of the driving cavity (55); one end of the liquid inlet pipe (65) is arranged in the upper layer of the liquid storage box (59), and the other end of the liquid inlet pipe is positioned in the liquid storage cavity (54) and can be movably embedded with the cooling box (51); the first single valve (66) is arranged at one end of the liquid inlet pipe (65), and the first single valve (66) points to the liquid storage cavity (54); the liquid inlet plate (67) is arranged at one end of the liquid inlet pipe (65), and the liquid inlet plate (67) is movably embedded in the liquid storage cavity (54); the liquid inlet spring (68) is connected with the liquid inlet plate (67) and the inner wall of the liquid storage cavity (54); the second single valve (69) is arranged on the side wall of the liquid storage cavity (54) and communicated with the cooling pipe (57).
2. The cooling mechanism of a PET bottle blank mold according to claim 1, characterized in that: the liquid changing device (7) comprises a convection groove (71) arranged on the side edge of the mold (2), a third single valve (72) and a fourth single valve (73) which are arranged on the inner wall of the convection groove (71), a flow discharging pipe (74) for communicating a cooling box (51) with the lower layer of a liquid storage box (59), a fifth single valve (75) arranged on the flow discharging pipe (74), an air pressure cavity (76) arranged in the side wall of the mold (2), an air pressure roller (77) arranged in the air pressure cavity (76), and an air pressure assembly (8) arranged in the air pressure cavity (76); the convection groove (71) is arranged on the side edge of the mold (2) and is positioned on one side of the liquid storage box (59); the third single valve (72) is arranged on the convection groove (71) and is positioned at the lower layer of the liquid storage box (59); the third single-phase valve (72) is directed to the convection slot (71); the fourth single valve (73) is arranged on the convection groove (71) and is positioned on the upper layer of the liquid storage box (59); the fourth one-way valve (73) points to the upper layer of the liquid storage box (59); the flow discharging pipe (74) is arranged at the lower layer of the cooling box (51) and the liquid storage box (59) and is movably embedded with the cooling box (51); the fifth single valve (75) is arranged on the flow discharge pipe (74) and points to the lower layer of the liquid storage box (59); the air pressure cavity (76) is arranged in the side wall of the mould (2) and is positioned right below the driving cavity (55); the air pressure roller (77) is movably embedded in the air pressure cavity (76), and the air pressure roller (77) is positioned right below the driving roller (56).
3. The cooling mechanism of a PET bottle blank mold according to claim 2, characterized in that: the air pressure assembly (8) comprises a ratchet rack (81) arranged on the air pressure roller (77), a rotating rod (82) arranged on the side wall of the air pressure cavity (76), a rotating torsion spring (83) arranged on the rotating rod (82), a latch (84) arranged at one end of the rotating rod (82), a support block (85) arranged at the other end of the rotating rod (82), a rotating column (86) arranged on the air pressure cavity (76), a torsion spring (87) arranged on the rotating column (86), a ratchet gear (88) arranged on the rotating column (86), a piston plate (89) arranged in the lower layer of the liquid storage box (59), a piston spring (890) arranged on the piston plate (89), and a linkage piece (9) arranged in the lower layer of the liquid storage box (59); the ratchet bar (81) is fixedly arranged on the air pressure roller (77); the rotating rod (82) is embedded in the inner wall of the air pressure cavity (76) in a reversible way; the rotary torsion spring (83) is connected with the rotary rod (82) and the side wall of the air pressure cavity (76), and the rotary torsion spring (83) is positioned at the middle point of the rotary rod (82); the latch (84) is arranged at one end of the rotating rod (82) and can be buckled with a ratchet gear (88); the cross section of the abutting block (85) is trapezoidal, can abut against the air pressure roller (77), and is arranged at the other end of the rotating rod (82); the rotating column (86) is rotatably embedded on the inner wall of the air pressure cavity (76); the torsion spring (87) is connected with the rotating column (86) and the inner wall of the air pressure cavity (76); the ratchet gear (88) is arranged on the rotating column (86) and can be meshed with the ratchet bar (81); the piston plate (89) is movably embedded in the lower layer of the liquid storage box (59); the piston spring (890) connects the piston plate (89) and the inner wall of the reservoir box (59).
4. The cooling mechanism of a PET bottle blank mold according to claim 3, characterized in that: the linkage piece (9) comprises a first telescopic block (91) arranged on the inner wall of the lower layer of the liquid storage box (59), a belt pulley (92) arranged on the side wall of the first telescopic block (91), a synchronous belt (93) arranged on the belt pulley (92), a first connecting block (94) arranged on the synchronous belt (93), a second telescopic block (95) arranged in the first telescopic block (91), a second connecting block (96) arranged on the second telescopic block (95), a fixed pulley (97) arranged in the air pressure cavity (76), a connecting rope (98) connecting the first telescopic block (91) and the rotating column (86), a connecting rod (99) connecting the second telescopic block (95) and the piston plate (89), and a movable pulley (990) arranged on the telescopic connecting rope (98); the first telescopic block (91) is movably embedded on the lower layer inner wall of the liquid storage box (59); the belt pulley (92) is rotatably embedded on the inner wall of the first telescopic block (91); the telescopic synchronous belt (93) is connected with the two belt pulleys (92) and movably embedded on the inner wall of the first telescopic block (91); one end of a telescopic first connecting block (94) is fixedly arranged on the lower-layer inner wall of the liquid storage box (59), and the other end of the telescopic first connecting block is fixedly arranged on a telescopic synchronous belt (93); the second telescopic block (95) is movably embedded in the first telescopic block (91); the second connecting block (96) is connected with the synchronous belt (93) and the outer wall of the second telescopic block (95); the fixed pulley (97) is rotatably embedded on the inner wall of the air pressure cavity (76); one end of the connecting rope (98) is fixedly arranged on the first telescopic block (91), and the other end of the connecting rope is wound on the rotary column (86) by bypassing the fixed pulley (97); the connecting rod (99) is connected with the second telescopic block (95) and the piston plate (89); the movable pulley (990) is arranged on the connecting rope (98).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110140081.5A CN112776309B (en) | 2021-02-01 | 2021-02-01 | Cooling mechanism of PET bottle blank mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110140081.5A CN112776309B (en) | 2021-02-01 | 2021-02-01 | Cooling mechanism of PET bottle blank mould |
Publications (2)
| Publication Number | Publication Date |
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| CN112776309A CN112776309A (en) | 2021-05-11 |
| CN112776309B true CN112776309B (en) | 2023-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110140081.5A Active CN112776309B (en) | 2021-02-01 | 2021-02-01 | Cooling mechanism of PET bottle blank mould |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58212919A (en) * | 1982-06-07 | 1983-12-10 | Idemitsu Petrochem Co Ltd | Die for multilayer extrusion molding |
| US6048189A (en) * | 1995-04-05 | 2000-04-11 | Japan Synthetic Rubber Co., Ltd. | Blow molding apparatus |
| US20060182841A1 (en) * | 2005-02-16 | 2006-08-17 | Rick Rodriguez | Apparatus for blow molding |
| CA2573336C (en) * | 2007-01-08 | 2014-07-08 | Garrtech Inc. | One-piece blow mold halves for molding a container |
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2021
- 2021-02-01 CN CN202110140081.5A patent/CN112776309B/en active Active
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Effective date of registration: 20230117 Address after: 529724 two of Hongxing Road, Yao Yao Town, Heshan, Jiangmen, Guangdong, two Applicant after: HESHAN YECHENG PLASTIC PRODUCTS CO.,LTD. Address before: 318020 No.1-5 Jinniu Road, Xinqian street, Huangyan District, Taizhou City, Zhejiang Province Applicant before: Taizhou lingtuo Plastics Co.,Ltd. |
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Denomination of invention: A Cooling Mechanism for PET Bottle Mold Effective date of registration: 20230417 Granted publication date: 20230328 Pledgee: Heshan Branch of China Construction Bank Co.,Ltd. Pledgor: HESHAN YECHENG PLASTIC PRODUCTS CO.,LTD. Registration number: Y2023980038264 |
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