CN119348109B - A injection molding machine unloader for plastic cup production - Google Patents
A injection molding machine unloader for plastic cup production Download PDFInfo
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- CN119348109B CN119348109B CN202411907019.4A CN202411907019A CN119348109B CN 119348109 B CN119348109 B CN 119348109B CN 202411907019 A CN202411907019 A CN 202411907019A CN 119348109 B CN119348109 B CN 119348109B
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Abstract
本发明提供一种用于塑料杯生产的注塑机下料装置，属于塑料成型技术领域，包括转盘和驱动组件，转盘上滑动安装有移动盘，移动盘上对称设有两个模具，模具包括模座和内模，模座和内模之间形成密封腔，密封腔内滑动设有活塞板；模座的侧壁内开设有进气通道，模座的两侧均设有锁模通道一和锁模通道二，两个模座同侧的锁模通道一和锁模通道二对应且能连通，锁模通道一的端部与进气通道连通，锁模通道一内弹性连接有锁模杆。本发明对注塑后的模具的密封腔内通入热气，对型坯进行加热的同时热气推动锁模通道一内的锁模杆将两个模具锁合，实现加热和锁模同步进行。
The present invention provides a material discharge device for an injection molding machine used for the production of plastic cups, which belongs to the field of plastic molding technology, and includes a turntable and a driving assembly, a movable disk is slidably mounted on the turntable, two molds are symmetrically arranged on the movable disk, the mold includes a mold base and an inner mold, a sealed cavity is formed between the mold base and the inner mold, a piston plate is slidably arranged in the sealed cavity; an air inlet channel is opened in the side wall of the mold base, a locking channel 1 and a locking channel 2 are arranged on both sides of the mold base, the locking channels 1 and 2 on the same side of the two mold bases correspond to each other and can be connected, the end of the locking channel 1 is connected to the air inlet channel, and a locking rod is elastically connected in the locking channel 1. The present invention introduces hot air into the sealed cavity of the mold after injection molding, and while heating the preform, the hot air pushes the locking rod in the locking channel 1 to lock the two molds, thereby realizing simultaneous heating and locking.
Description
Technical Field
The invention relates to the technical field of plastic molding, in particular to a blanking device of an injection molding machine for plastic cup production.
Background
The injection molding and blow molding process is one of the production processes for manufacturing plastic cups, and the specific working process comprises the steps of firstly molding a parison with a closed bottom by an injection molding machine, placing the parison in a blow molding mold, and blowing the parison in the blow molding mold into a product by using compressed air.
At present, the common practice on the market is that the first method is to use an integral injection-blowing machine to complete injection molding and blow molding on the injection-blowing machine, and the second method is to firstly produce parisons by the injection-molding machine and then transfer the parisons to the blow molding machine for blow molding. For example, patent document CN112917876B discloses an injection and blowing machine with a lifting type bottom mold plate, in which a parison is formed by raw materials in an injection molding mechanism, and then transferred into a cavity of a mold assembly via a transfer mechanism, and blown into a bottle by a blowing assembly. Injection molding and blow molding processes can be performed on one machine using an injection-blow molding machine, but the equipment is expensive, some manufacturers producing plastic bottles are limited by funds or reuse of old equipment, and the plastic bottles may be produced by the second method.
Because the parison after injection molding in the second method needs to be transferred to a blow molding mold and then is blow molded by a blow molding machine, the temperature of the parison is reduced in the transfer process, and the parison is usually heated before blow molding to soften the plastic, so that the parison is easier to mold and mold, and the quality of blow molding is improved. For example, patent document CN114889098B discloses a two-station one-step injection-blow machine, which drives a heating holder to contact with a product shaping frame through a hydraulic cylinder, and then the heating holder can inject hot air into the inner side of an injection-blow hole of the product, so as to be convenient for maintaining the temperature of the injection-molded product, and the hydraulic cylinder drives a blow molding die holder to contact with the product shaping frame, so as to be convenient for realizing blow molding operation. The injection-blowing equipment is adopted for injection molding firstly, then the injected parison is heated, then the parison is placed in a blow molding die, and before blow molding, the blow molding can be performed after the blow molding die is locked. The parison is heated by the device and then is placed in the blow molding die, and then the blow molding die can be locked, so that the heating and the locking are separately carried out, and the molding efficiency is affected.
Disclosure of Invention
In view of the above, the invention provides a blanking device of an injection molding machine for producing plastic cups, which solves the technical problem that the molding efficiency is affected by separate heating and mold locking of a molded parison in the prior art.
In order to solve the technical problems, the invention provides a blanking device of an injection molding machine for producing plastic cups, which comprises a rotary table and a driving component for driving the rotary table to rotate, wherein a movable table is slidably arranged on the rotary table, two dies are arranged on the movable table, and each die comprises a die holder slidably arranged on the movable table and an inner die arranged in the die holder;
A sealing cavity is formed between the die holder and the inner die, a piston plate which divides the sealing cavity into an upper sealing area and a lower sealing area is arranged in the sealing cavity in a vertical sliding way, a vent is arranged on the upper sealing area, and an exhaust hole is arranged on the lower sealing area;
An air inlet channel is formed in the side wall of the die holder, the air inlet channel is communicated with the upper sealing area through downward movement of the piston plate, a first die locking channel and a second die locking channel are arranged on two sides of the die holder, the first die locking channel and the second die locking channel on the same side of the two die holders are corresponding and can be communicated, the end part of the first die locking channel is communicated with the air inlet channel, and a die locking rod which can enter the second die locking channel is elastically connected in the first die locking channel.
Through adopting above-mentioned technical scheme, in the mould was transported to the parison after the manipulator will moulding plastics, let in steam in to the air vent, in the steam entered into the upper seal district, the atmospheric pressure in the messenger upper seal district increased, the piston board is pushed down to the atmospheric pressure, along with the lower of piston board, the volume of upper seal district increases gradually, the volume of lower seal district reduces gradually, the gaseous exhaust hole of follow in the lower seal district is discharged, fill steam in the upper seal district, can heat the centre form, and then heat the parison in the die cavity through the heat transfer, be favorable to the softening of parison, thereby be favorable to improving the blowing quality. When the piston plate moves downwards to connect the air inlet channel with the upper sealing area, hot air in the upper sealing area enters the air inlet channel and then enters the first mode locking channel, the air pressure in the first mode locking channel is increased, and the mode locking rod is pushed to move into the second mode locking channel on the same side of the die cavity, so that the two inner dies are locked, and blow molding is facilitated. According to the invention, hot air is introduced into the injection-molded mold, and the hot air transfers heat to the parison in the mold, so that the parison is heated, and meanwhile, the hot air pushes the mold locking rod to lock the two molds, so that the heating and the mold locking are synchronously performed, and the molding efficiency is improved.
Preferably, two mold locking grooves are formed in the mold locking rod, locking grooves communicated with the sealing cavity are formed in one sides, close to the inner mold, of the first mold locking channel and the second mold locking channel, locking pieces capable of being inserted into the mold locking grooves and locking the mold locking rod are connected in a sliding mode, elastic pieces are connected between the locking pieces and the inner walls of the locking grooves, and the piston plate moves downwards to push the locking pieces to be inserted into the mold locking grooves so as to achieve locking of the mold locking rod.
Through adopting above-mentioned technical scheme, after the piston plate moves down and makes steam enter into mode locking passageway one, after steam promotes the mode locking pole with two moulds closure, along with the continuation of piston plate moves down, the piston plate promotes the locking piece and moves to the one side that is close to the mode locking pole along in the locking groove, until the locking piece card goes into in the mode locking groove, carries out the locking to the mode locking pole, is favorable to improving the stability of mode locking pole mode locking. After the locking piece locks the mold locking rod, the hot air can be stopped from being input into the upper sealing area, the vent is sealed, the hot air in the upper sealing area keeps the parison warm, the air pressure in the upper sealing area is kept constant, and the mold locking rod can keep the inner mold in a mold locking state during blow molding.
Preferably, the locking piece is provided with a first inclined plane at one side close to the sealing cavity, and a second inclined plane capable of pushing the first inclined plane to move is arranged at the edge of the lower end face of the piston plate.
Through adopting above-mentioned technical scheme, along with the decline of piston plate, the inclined plane second contact inclined plane of piston plate promotes the inclined plane and moves to the one side that is close to the mode locking pole in the lump to make the locking piece follow locking inslot and move to the one side that is close to the mode locking pole, until the locking piece card goes into in the mode locking groove, carries out the locking to the mode locking pole, is favorable to improving the stability of mode locking pole mode locking.
Preferably, a first slide rail is arranged on the rotary table, the movable disk is slidably mounted on the first slide rail, a second slide rail is arranged on the movable disk, two mold bases are slidably mounted on the second slide rail, a first linear driver capable of driving the movable disk to slide along the first slide rail is fixedly mounted on the rotary table, and second linear drivers capable of pushing the mold bases to move are fixedly mounted on two sides of the movable disk.
Through adopting above-mentioned technical scheme, two die holders can follow slide rail two and slide, and two die holders are close to or keep away from each other through the drive of second linear drive to realize the unloading after the die locking before the blowing and the die unblock after the blowing. The movable disc can slide along the first slide rail, and is driven to move by the first linear driver, so that the injection molded parison is conveniently placed in the mold cavity by matching with the manipulator.
Preferably, four movable disks are uniformly distributed on the rotary table to form an injection molding station, a heating station, a blow molding station and a blanking station, an injection molding machine is arranged on one side of the injection molding station, a support frame is arranged on one side of the heating station, a hot gas tank is fixedly connected to the support frame, a hot gas frame is connected to the support frame in a sliding manner, a hot gas cavity is fixedly connected to the hot gas frame, a hot gas pipeline is connected between the hot gas tank and the hot gas cavity, the hot gas pipeline is a corrugated pipe, two spray heads capable of being inserted into a vent and inputting hot gas into the vent are arranged below the hot gas cavity, and a first screw lifting mechanism capable of driving the hot gas frame to lift is arranged on the support frame.
Through adopting above-mentioned technical scheme, after the material is in injection molding machine injection molding base, transfer the mould on the station of moulding plastics through the manipulator in, the carousel drives the mould and rotates on the heating station, first lead screw elevating system drives the hot gas frame and descends, the hot gas frame drives the hot gas chamber and descends, make two shower nozzles and the air vent switch on of hot gas chamber, hot gas in the hot gas jar enters into the hot gas intracavity through the hot gas pipeline, then in the sealed district in the entering of shower nozzle, air vent in proper order, realize the closure of mould when heating the parison.
Preferably, the vent hole is provided with a side wall and a bottom plate, the bottom plate is elastically connected with a plug cover, the side wall is provided with a plurality of vent holes, and the vent holes can be opened and closed by lifting the plug cover.
Through adopting above-mentioned technical scheme, after the shower nozzle pushed down the cock lid, the air vent on the lateral wall was opened, is convenient for pour into the steam into in the air vent into to realize the heating of parison and the closure of mould.
Preferably, one side of the blow molding station is provided with a blow molding machine, a connecting frame is arranged on the blow molding machine in a sliding manner, an unlocking rod which can extend into the vent hole is fixedly arranged on the connecting frame, the unlocking rod presses down the plug cover to open the vent hole, and a second screw lifting mechanism which can drive the connecting frame to lift is arranged on the blow molding machine.
Through adopting above-mentioned technical scheme, the carousel drives the mould and rotates to the blowing station, blow molding is carried out after the aircraft nose of blowing machine descends, then, second lead screw elevating system drives the link and descends to the release lever and stretch into in the air vent, the release lever pushes down the cock cap and makes the air vent open, after the steam in the upper seal chamber passes through the air vent output, the atmospheric pressure in the upper seal chamber reduces, the piston plate moves up under the effect of elasticity, the in-process that the piston plate moved up releases the spacing to the locking piece, the locking piece moves to the one end of keeping away from the locking lever under the effect of elasticity, the locking to the locking lever is released to the locking piece, because upper seal chamber and inlet channel, the first switch-on of locking channel, the internal atmospheric pressure of upper seal chamber reduces, make the internal atmospheric pressure of locking channel also reduce, thereby make the locking lever return to the first of locking channel under the effect of elasticity, and then realize the unblock of two centre forms.
Preferably, one side of the blanking station is provided with a blanking conveying belt, and the blanking conveying belt is provided with a collecting box for collecting the plastic cups after blow molding.
Through adopting above-mentioned technical scheme, after two centre forms unblock, the carousel drives the centre form and rotates the unloading station, and two die holders of second linear drive keep away from each other, and the manipulator is transferred the plastics cup after the blowing and is collected in the box, carries through unloading conveyer belt.
The technical scheme of the invention has the following beneficial effects:
1. According to the invention, hot air is introduced into the sealing cavity of the injection molded mold, the hot air pushes the piston plate to descend, the heat of the hot air is transferred to the parison in the mold, so that the parison is heated, the air inlet channel is opened while the hot air pushes the piston plate to descend, the hot air sequentially enters the air inlet channel and the mold locking channel I, and the hot air pushes the mold locking rod in the mold locking channel I to lock the two molds, so that the synchronous heating and mold locking are realized, and the molding efficiency is improved.
2. In the process that the hot gas pushes the piston plate to descend, the piston plate drives the locking piece to move into the locking groove of the locking rod, and the locking piece locks the locking rod, so that the stability of locking of the locking rod is improved.
3. The vent hole is provided with the side wall and the bottom plate, the bottom plate is elastically connected with the plug cover, the side wall is provided with the vent hole, the vent hole is opened and closed through the lifting of the plug cover, when hot air is input or released, the spray head or the unlocking piece presses down the plug cover to enable the vent hole to be opened, the spray head is separated from the plug cover after inputting the air, the lifting vent hole on the plug cover is closed, the heat preservation of the parison by the hot air is facilitated, the constant air pressure in the sealing cavity is facilitated, and the mold locking rod is convenient to keep in a mold locking state on the inner mold during blow molding.
Drawings
FIG. 1 is a schematic diagram of the blanking device of the injection molding machine for plastic cup production;
FIG. 2 is a cross-sectional view of a mold of the present invention;
FIG. 3 is a longitudinal cross-sectional view of the mold of the present invention;
FIG. 4 is a longitudinal cross-sectional view of a die holder of the present invention;
FIG. 5 is an enlarged view of FIG. 4 at A;
FIG. 6 is a schematic view of the structure of the piston plate and the clamping lever of the present invention;
FIG. 7 is a schematic view of a portion of the heating station of the present invention;
FIG. 8 is a schematic view of a portion of the blow molding station of the present invention.
In the drawing, 1, a turntable, 11, an injection molding station, 111, an injection molding machine, 12, a heating station, 121, a supporting frame, 122, a hot gas tank, 123, a hot gas frame, 124, a hot gas pipeline, 125, a hot gas cavity, 126, a nozzle, 127, a first screw lifting mechanism, 13, a blow molding station, 131, a blow molding machine, 132, a connecting frame, 133, a second screw lifting mechanism, 134, an unlocking rod, 14, a blanking station, 141, a blanking conveyer belt, 142, a collecting box, 15, a first linear driver, 16, a first sliding rail, 2, a moving disk, 21, a second linear driver, 22, a second sliding rail, 3, a mold, 31, a mold holder, 311, an air inlet channel, 312, an air inlet, 313, a first mold locking channel, 314, a second mold locking channel, 32, an inner mold, 33, a mold cavity, 34, a sealing cavity, 341, an upper sealing area, 342, a lower sealing area, 343, 344, a bottom plate, 345, a side wall, 346, a vent hole, 347, a plug cover, an air vent, 35, a piston plate, 36, a locking rod, 361, a locking groove, 37 and a locking groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 8 of the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which are obtained by a person skilled in the art based on the described embodiments of the invention, fall within the scope of protection of the invention.
Examples
The embodiment provides an injection molding machine blanking device for plastic cup production, which comprises a rotary table 1, a manipulator and a driving assembly as shown in fig. 1.
As shown in fig. 1, a turntable 1 is rotatably mounted on a frame body, and a driving assembly is arranged below the turntable 1 and is used for driving the turntable 1 to rotate, and the driving assembly is driven by a motor (not shown in the drawing).
As shown in fig. 1, four moving trays 2 are uniformly distributed on a rotary table 1 to form an injection molding station 11, a heating station 12, a blow molding station 13 and a blanking station 14, and two molds 3 are symmetrically arranged on each of the four moving trays 2. The two manipulators are arranged on one side (not shown) of the injection station 11 and the blanking station 14, respectively.
As shown in fig. 1, an injection molding machine 111 is provided on one side of the injection molding station 11, and after the material is fed into the injection molding machine 111, a parison injection-molded by the injection molding machine 111 is transferred onto the mold 3 on the injection molding station 11 by a robot provided on one side of the injection molding station 11.
As shown in fig. 1, the driving assembly drives the turntable 1 to rotate, so that the mold 3 on the injection molding station 11 is sequentially transferred to the heating station 12, the blow molding station 13 and the blanking station 14. The heating station 12 heats the parison and locks the mold 3, one side of the blow molding station 13 is provided with a blow molding machine 131, the blow molding machine 131 performs blow molding on the parison into plastic cups, the mold 3 is unlocked after blow molding, and a manipulator (not shown) on the side of the blanking station 14 transfers the molded plastic cups.
As shown in fig. 1, the parts of the turntable 1 located at the four stations are all provided with a first slide rail 16, wherein the first slide rail 16 is a linear slide rail, and the length direction of the first slide rail extends along the radial direction of the turntable 1. The movable disk 2 is slidably mounted on the first slide rail 16, and a first linear driver 15 capable of driving the movable disk 2 to slide along the first slide rail 16 is fixedly mounted on the rotary disk 1.
As shown in fig. 7, a second slide rail 22 is fixedly installed above the moving disc 2, and the second slide rail 22 is also a linear slide rail, and the length direction of the second slide rail is perpendicular to the length direction of the first slide rail 16.
As shown in fig. 2 and 7, the mold 3 includes a mold base 31 slidably mounted on the second slide rail 22 and an inner mold 32 disposed in the mold base 31, and two mold 3 are symmetrically disposed on each of the four movable disks 2, that is, the second slide rail 22 is slidably mounted with two mold bases 31. The second linear drivers 21 capable of pushing the two die holders 31 toward or away from each other are fixedly installed at both sides of the moving plate 2. The first linear actuator 15 and the second linear actuator 21 are each one of a cylinder or a hydraulic cylinder.
As shown in fig. 1 and 7, by providing the first slide rail 16 and the second slide rail 22, movement of the mold 3 in two dimensions can be achieved, so that the horizontal position of the mold 3 can be adjusted conveniently.
As shown in fig. 2, a cavity 33 for blow molding is formed between the two inner molds 32 on the moving tray 2.
As shown in fig. 2 and 3, a sealing cavity 34 is formed between the die holder 31 and the inner die 32, a piston plate 35 is provided in the sealing cavity 34 in a vertically sliding manner, and the side edge of the piston plate 35 abuts against the inner wall of the sealing cavity 34, so that the sealing cavity 34 is divided into an upper sealing area 341 and a lower sealing area 342.
As shown in fig. 3 and 4, the upper sealing area 341 is provided with a vent 343 for introducing or releasing hot air, the vent 343 has a side wall 345 and a bottom plate 344, the bottom plate 344 is elastically connected with a plug cover 347, the side wall 345 is provided with a plurality of vent holes 346, the plug cover 347 can enable the vent holes 346 to be opened after being driven to descend by external force, and after the external force disappears, the plug cover 347 resets under the action of elastic force, namely the plug cover 347 is positioned above the vent holes 346, and the vent holes 346 are closed.
As shown in fig. 2 and 3, the lower portion of the lower sealing zone 342 is provided with an exhaust hole 348, and a return spring is connected between the lower portion of the piston plate 35 and the bottom of the lower sealing zone 342.
As shown in fig. 3, hot air is introduced into the air vent 343, the hot air enters into the upper sealing region 341, so that the air pressure in the upper sealing region 341 is increased, the air pressure pushes the piston plate 35 to move downwards, the volume of the upper sealing region 341 is gradually increased along with the downward movement of the piston plate 35, the volume of the lower sealing region 342 is gradually reduced, the air in the lower sealing region 342 is discharged from the air outlet 348, and the upper sealing region 341 is filled with hot air, so that the inner mold 32 can be heated, and the parison in the mold cavity 33 can be heated through heat transfer, thereby being beneficial to softening the parison, and further being beneficial to improving the blow molding quality.
As shown in fig. 2 and 3, an air inlet channel 311 is formed in a side wall 345 of the die holder 31, an axis of the air inlet channel 311 is in an up-down direction, an air inlet 312 communicated with the sealing cavity 34 is formed at an upper end of the air inlet channel 311, a first die locking channel 313 and a second die locking channel 314 are formed on two side walls 345 of the die holder 31, and the first die locking channel 313 and the second die locking channel 314 on the same side of the two die holders 31 are corresponding and can be communicated. Specifically, openings are formed at opposite ends of the first and second mold locking channels 313 and 314, and after the two mold bases 31 are close to each other and bonded, the first and second mold locking channels 313 and 314 are communicated, and one end of the first mold locking channel 313, which is far away from the second mold locking channel 314, is communicated with the lower end of the air inlet channel 311. The first mold locking channel 313 is elastically connected with a mold locking rod 36, and the mold locking rod 36 can enter the second mold locking channel 314 under the action of air pressure to lock the two inner molds 32.
As shown in fig. 6, two mold locking grooves 361 are formed below the mold locking rod 36, and after the mold locking rod 36 locks the two inner molds 32, the two mold locking grooves 361 are respectively located in the first mold locking channel 313 and the second mold locking channel 314. As shown in fig. 2 and 5, a locking groove 362 communicated with the sealing cavity 34 is formed in the first locking channel 313 and the second locking channel 314 at a side close to the inner mold 32, a locking piece 37 capable of being inserted into the locking groove 361 is slidably connected in the locking groove 362, and an elastic piece (not shown in the figure) is connected between the locking piece 37 and the inner wall of the locking groove 362. The locking piece 37 is provided with a first inclined plane near the side of the sealing cavity 34, the edge of the lower end surface of the piston plate 35 is provided with a second inclined plane capable of pushing the first inclined plane to move, and the downward movement of the piston plate 35 can push the locking piece 37 to be inserted into the mold locking groove 361 so as to realize the locking of the mold locking rod 36.
When the piston plate 35 moves down to connect the air inlet 312 with the upper sealing area 341 as shown in fig. 3, the hot air in the upper sealing area 341 enters the air inlet channel 311 through the air inlet 312 and then enters the first locking channel 313, so that the air pressure in the first locking channel 313 is increased, and as shown in fig. 2, the air pressure pushes the locking rod 36 to move into the second locking channel 314 on the same side of the cavity 33, so that the two inner molds 32 are locked, and blow molding is facilitated. As shown in fig. 5, as the piston plate 35 moves down, the second inclined surface of the piston plate 35 contacts with the inclined surface and pushes the inclined surface to move to the side close to the mold locking rod 36, so that the locking member 37 moves to the side close to the mold locking rod 36 until the locking member 37 is clamped into the mold locking groove 361, thereby locking the mold locking rod 36, and being beneficial to improving the stability of mold locking of the mold locking rod 36.
As shown in fig. 1 and 7, a support frame 121 is provided on one side of the heating station 12, and a hot gas tank 122 for delivering hot gas into the seal chamber 34 is fixedly connected to the support frame 121. The support frame 121 is connected with a hot air frame 123 in a sliding manner, a hot air cavity 125 is fixedly connected to the hot air frame 123, a hot air pipeline 124 is connected between the hot air tank 122 and the hot air cavity 125, the hot air pipeline 124 is a corrugated pipe, two spray heads 126 which can be inserted into the air vents 343 and input hot air into the air vents 343 are arranged below the hot air cavity 125, and the support frame 121 is provided with a first screw lifting mechanism 127 which can drive the hot air frame 123 to lift.
As shown in fig. 1 and 7, the turntable 1 drives the mold 3 to rotate onto the heating station 12, the first screw lifting mechanism 127 drives the hot air frame 123 to descend, the hot air frame 123 drives the hot air cavity 125 to descend, two spray heads 126 of the hot air cavity 125 press down plug covers 347, the vent holes 346 are opened, hot air in the hot air tank 122 enters the hot air cavity 125 through the hot air pipeline 124, and then enters the upper sealing area 341 through the spray heads 126 and the vent holes 346 in sequence, so that the mold 3 is locked while the parison is heated.
After the mold 3 is locked, the hot air is stopped from being input into the upper sealing area 341, the first screw lifting mechanism 127 drives the hot air frame 123 to lift, the spray head 126 is separated from the plug cover 347, the plug cover 347 moves upwards under the action of elastic force and seals the vent holes 346, and the hot air in the upper sealing area 341 keeps the heat of the parison, so that the air pressure in the upper sealing area 341 is kept constant, and the mold locking rod 36 is kept in a mold locking state on the inner mold 32 during blow molding.
As shown in fig. 1 and 8, the turntable 1 drives the mold 3 to rotate to the blow molding station 13, one side of the blow molding station 13 is provided with a blow molding machine 131, a connecting frame 132 is slidably arranged on the blow molding machine 131, an unlocking rod 134 which can extend into a vent 343 is fixedly arranged on the connecting frame 132, the unlocking rod 134 presses down a plug cover 347 to open the vent 346, and a second screw lifting mechanism 133 which can drive the connecting frame 132 to lift is arranged on the blow molding machine 131.
The head of the blow molding machine 131 descends to perform blow molding, then, the second screw lifting mechanism 133 drives the connecting frame 132 to descend until the unlocking rod 134 stretches into the vent hole 343, the unlocking rod 134 presses the plug cover 347 to open the vent hole 346, after hot air in the upper sealing cavity 34 is output through the vent hole 346, air pressure in the upper sealing cavity 34 is reduced, the piston plate 35 moves upwards under the action of elastic force, the limit on the locking piece 37 is released in the process of moving upwards the piston plate 35, the locking piece 37 moves towards one end far away from the locking rod 36 under the action of elastic force, the locking piece 37 releases the locking on the locking rod 36, and as the upper sealing cavity 34 is communicated with the air inlet channel 311 and the first locking channel 313, air pressure in the upper sealing cavity 34 is reduced, the air pressure in the first locking channel 313 is also reduced, so that the locking rod 36 is retracted into the first locking channel 313 under the action of elastic force, and unlocking of the two inner molds 32 is further realized.
As shown in fig. 1, the turntable 1 drives the mold 3 to continue to rotate to the blanking station 14, one side of the blanking station 14 is provided with a blanking conveying belt 141, and a collecting box 142 for collecting the plastic cups after blow molding is arranged on the blanking conveying belt 141. The manipulator at one side of the blanking station 14 transfers the blow-molded plastic cups into the collection box 142, and the blow-molded plastic cups are conveyed by the blanking conveying belt 141, so that the plastic cups are blanked and transported.
The application method of the blanking device of the injection molding machine for producing the plastic cups comprises the following steps:
After the materials are added into the injection molding machine 111, transferring a parison injection molded by the injection molding machine 111 into a die cavity 33 of a die 3 on the injection molding station 11 through a manipulator arranged on one side of the injection molding station 11, and driving two die holders 31 to be close to each other until the two die holders are attached;
The driving assembly drives the rotary table 1 to rotate, so that the molds 3 on the injection molding station 11 are sequentially transferred to the heating station 12, the first screw lifting mechanism 127 drives the hot air frame 123 to descend, the hot air frame 123 drives the hot air cavity 125 to descend, two spray heads 126 of the hot air cavity 125 downwards press plug covers 347, vent holes 346 are opened, hot air in the hot air tank 122 enters the hot air cavity 125 through the hot air pipeline 124 and then sequentially enters an upper sealing area 341 through the spray heads 126 and the vent holes 346, the air pressure in the upper sealing area 341 is increased, the air pressure pushes the piston plate 35 to move downwards, the volume of the upper sealing area 341 is gradually increased along with the downward movement of the piston plate 35, the volume of the lower sealing area 342 is gradually reduced, the air in the lower sealing area 342 is discharged from the vent holes 348, the upper sealing area 341 is filled with hot air, the inner mold 32 can be heated, and parisons in the mold 33 can be heated through heat transfer;
Step three, as the piston plate 35 moves downwards, the air inlet channel 311 is communicated with the upper sealing area 341, hot air in the upper sealing area 341 enters the air inlet channel 311 and then enters the first die locking channel 313, so that the air pressure in the first die locking channel 313 is increased, the air pressure pushes the die locking rod 36 to move into the second die locking channel 314 on the same side of the die cavity 33, thereby locking the two inner dies 32 for blow molding, and as the piston plate 35 moves downwards, the inclined surface of the second contact inclined surface of the piston plate 35 pushes the inclined surface to move towards the side close to the die locking rod 36, so that the locking piece 37 moves towards the side close to the die locking rod 36 until the locking piece 37 is clamped in the die locking groove 361, and the die locking rod 36 is locked, thereby being beneficial to improving the stability of die locking of the die locking rod 36;
After the mold 3 is locked, the hot air is stopped from being input into the upper sealing area 341, the first screw lifting mechanism 127 drives the hot air frame 123 to lift, the spray head 126 is separated from the plug cover 347, the plug cover 347 moves upwards under the action of elasticity and seals the vent holes 346, and the hot air in the upper sealing area 341 keeps the heat of the parison, so that the air pressure in the upper sealing area 341 is kept constant, and the mold locking rod 36 is kept in a mold locking state on the inner mold 32 during blow molding;
The driving assembly drives the turntable 1 to rotate, the turntable 1 drives the mold 3 to rotate to the blow molding station 13, the machine head of the blow molding machine 131 descends and then performs blow molding, then the second screw lifting mechanism 133 drives the connecting frame 132 to descend until the unlocking rod 134 stretches into the vent hole 343, the unlocking rod 134 presses down the plug cover 347 to open the vent hole 346, after hot air in the upper sealing cavity 34 is output through the vent hole 346, the air pressure in the upper sealing cavity 34 is reduced, the piston plate 35 moves upwards under the action of elastic force, the limit on the locking piece 37 is released in the process of moving the piston plate 35 upwards, the locking piece 37 moves towards one end far from the locking rod 36 under the action of elastic force, the locking piece 37 releases the locking on the locking rod 36, and the upper sealing cavity 34 is communicated with the air inlet channel 311 and the locking rod channel one 313, the air pressure in the upper sealing cavity 34 is reduced, and the air pressure in the locking rod one 313 is also reduced, so that the locking rod 36 is retracted into the locking rod one 313 under the action of elastic force, and unlocking of the two inner molds 32 is realized;
Step six, the driving assembly drives the turntable 1 to rotate, the turntable 1 drives the mold 3 to continuously rotate to the blanking station 14, the second linear driver 21 drives the two mold bases 31 to be away from each other, the manipulator on one side of the blanking station 14 transfers the blow-molded plastic cups to the collecting box 142, and the blow-molded plastic cups are conveyed through the blanking conveying belt 141, so that the blanking and the conveying of the plastic cups are completed.
In addition, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or in communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (8)
1. A kind of injection molding machine blanking device used for plastic cup production, including rotary table (1) and driving the rotary table (1) pivoted drive assembly, sliding mounting has and moves the disc (2) on the rotary table (1), move and is equipped with two moulds (3) on the disc (2), the mould (3) includes the die holder (31) that slides and sets up on moving the disc (2), internal mold (32) set up in die holder (31), its characterized in that:
a sealing cavity (34) is formed between the die holder (31) and the inner die (32), a piston plate (35) which divides the sealing cavity (34) into an upper sealing area (341) and a lower sealing area (342) is arranged in the sealing cavity (34) in a vertical sliding manner, a vent (343) is arranged on the upper sealing area (341), an exhaust hole (348) is arranged on the lower sealing area (342), and a return spring is connected between the lower part of the piston plate (35) and the lower sealing area (342);
An air inlet channel (311) is formed in the side wall (345) of the die holder (31), the air inlet channel (311) can be communicated with the upper sealing area (341) through downward movement of the piston plate (35), a first die locking channel (313) and a second die locking channel (314) are formed in two sides of the die holder (31), the first die locking channel (313) and the second die locking channel (314) on the same side of the two die holders (31) correspond to each other and can be communicated, the end part of the first die locking channel (313) is communicated with the air inlet channel (311), and a die locking rod (36) which can enter the second die locking channel (314) is elastically connected in the first die locking channel (313).
2. The blanking device of the injection molding machine for plastic cup production according to claim 1, wherein two mold locking grooves (361) are formed in the mold locking rod (36), locking grooves (362) communicated with the sealing cavity (34) are formed in one side, close to the inner mold (32), of the first mold locking channel (313) and the second mold locking channel (314), locking pieces (37) capable of being inserted into the mold locking grooves (361) to lock the mold locking rod (36) are slidably connected in the locking grooves (362), elastic pieces are connected between the locking pieces (37) and the inner walls of the locking grooves (362), and the piston plate (35) can push the locking pieces (37) to be inserted into the mold locking grooves (361) to lock the mold locking rods (36).
3. The blanking device of the injection molding machine for producing plastic cups according to claim 2, wherein the locking piece (37) is provided with a first inclined plane at one side close to the sealing cavity (34), and a second inclined plane capable of pushing the first inclined plane to move is arranged at the edge of the lower end surface of the piston plate (35).
4. The blanking device of the injection molding machine for plastic cup production according to claim 3, wherein a first sliding rail (16) is arranged on the rotary table (1), the movable disc (2) is slidably arranged on the first sliding rail (16), a second sliding rail (22) is arranged on the movable disc (2), two die holders (31) are slidably arranged on the second sliding rail (22), a first linear driver (15) capable of driving the movable disc (2) to slide along the first sliding rail (16) is fixedly arranged on the rotary table (1), and second linear drivers (21) capable of pushing the die holders (31) to move are fixedly arranged on two sides of the movable disc (2).
5. The blanking device of the injection molding machine for plastic cup production according to claim 4, wherein four moving plates (2) are uniformly distributed on the rotary table (1) to form an injection molding station (11), a heating station (12), a blow molding station (13) and a blanking station (14), one side of the injection molding station (11) is provided with the injection molding machine (111), one side of the heating station (12) is provided with a support frame (121), the support frame (121) is fixedly connected with a hot air tank (122), the support frame (121) is slidingly connected with a hot air frame (123), the hot air frame (123) is fixedly connected with a hot air cavity (125), a hot air pipeline (124) is connected between the hot air tank (122) and the hot air cavity (125), the hot air pipeline (124) is a corrugated pipe, two spray heads (126) which can be inserted into a vent (343) and input hot air into the vent (343) are arranged below the hot air cavity (125), and a first screw lifting mechanism (127) which can drive the hot air frame (123) to lift is arranged on the support frame (121).
6. The blanking device of the injection molding machine for producing plastic cups according to claim 5, wherein the vent (343) is provided with a side wall (345) and a bottom plate (344), the bottom plate (344) is elastically connected with a plug cover (347), the side wall (345) is provided with a plurality of vent holes (346), and the vent holes (346) can be opened and closed by lifting the plug cover (347).
7. The blanking device of the injection molding machine for producing plastic cups according to claim 6, wherein a blowing machine (131) is arranged on one side of the blowing station (13), a connecting frame (132) is arranged on the blowing machine (131) in a sliding manner, an unlocking rod (134) which can extend into the air vent (343) is fixedly arranged on the connecting frame (132), the unlocking rod (134) presses down the plug cover (347) to enable the air vent (346) to be opened, and a second screw lifting mechanism (133) which can drive the connecting frame (132) to lift is arranged on the blowing machine (131).
8. The blanking device of the injection molding machine for producing plastic cups according to claim 7, wherein a blanking conveyer belt (141) is arranged on one side of the blanking station (14), and a collecting box (142) for collecting plastic cups after blow molding is arranged on the blanking conveyer belt (141).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202411907019.4A CN119348109B (en) | 2024-12-24 | 2024-12-24 | A injection molding machine unloader for plastic cup production |
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| CN202411907019.4A CN119348109B (en) | 2024-12-24 | 2024-12-24 | A injection molding machine unloader for plastic cup production |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118305993A (en) * | 2024-06-07 | 2024-07-09 | 苏州同大机械有限公司 | Mould locking device of blow molding machine |
| CN118906429A (en) * | 2024-07-23 | 2024-11-08 | 东莞博川智能设备有限公司 | Integrated high-efficiency injection stretch blow equipment |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4379688A (en) * | 1981-09-14 | 1983-04-12 | Ethyl Development Corporation | Oriented injection blow molded container production |
| US4592720A (en) * | 1984-12-21 | 1986-06-03 | Adolph Coors Company | Device for reheating and blow molding parisons |
| JP3802030B2 (en) * | 2004-01-19 | 2006-07-26 | 株式会社清水化成 | Blow molding method |
| FR2933024B1 (en) * | 2008-06-27 | 2012-12-28 | Sidel Participations | MOLD BOTTOM SUPPORT FOR BLOW MACHINE. |
| JP6391466B2 (en) * | 2014-12-27 | 2018-09-19 | 株式会社イノアックコーポレーション | Blow molded product manufacturing method and manufacturing apparatus |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118305993A (en) * | 2024-06-07 | 2024-07-09 | 苏州同大机械有限公司 | Mould locking device of blow molding machine |
| CN118906429A (en) * | 2024-07-23 | 2024-11-08 | 东莞博川智能设备有限公司 | Integrated high-efficiency injection stretch blow equipment |
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