CN114193725B - Plastic product forming equipment capable of preventing bubbles from being generated - Google Patents
Plastic product forming equipment capable of preventing bubbles from being generated Download PDFInfo
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- CN114193725B CN114193725B CN202111490386.5A CN202111490386A CN114193725B CN 114193725 B CN114193725 B CN 114193725B CN 202111490386 A CN202111490386 A CN 202111490386A CN 114193725 B CN114193725 B CN 114193725B
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- heat preservation
- heat
- cavity
- pipeline
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/58—Details
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C2045/7292—Recovering waste heat
Abstract
The invention discloses a plastic product forming device capable of preventing bubbles from generating, which belongs to the technical field of injection molding equipment and comprises a mold frame plate and an injection molding sprue, wherein a heat preservation cavity is arranged at the top of the mold frame plate, a guide pipeline is arranged in the heat preservation cavity, and a heat preservation section is arranged in the heat preservation cavity of the guide pipeline; the top of the mold base plate is connected with a sealing element, a heat-preservation heating element is arranged in the heat-preservation cavity, and a bottom component is arranged at the communication position of the injection molding pouring gate and the guide pipeline. According to the invention, the die carrier plate communicated with the injection molding sprue is provided with the heat insulation cavity, hot air generated by the heater at the machine barrel is guided to the heat insulation heating element at the heat insulation cavity, the heat insulation heating element keeps a heat insulation state after plastic is separated from the machine barrel, and meanwhile, the plastic is supported by the bottom component, so that the plastic is conveniently and densely filled with molten plastic.
Description
Technical Field
The invention relates to the technical field of plastic preparation devices, in particular to plastic product forming equipment capable of preventing bubbles from being generated.
Background
The plastic preparation molding is injection molding, when a plastic product is injection molded through an injection molding machine, the raw material for preparation is added from an adding port of the injection molding machine after being pretreated, the raw material is subjected to melting treatment in a screw extrusion mode, the molten plastic enters through a pouring gate of an injection mold, and the plastic preparation is completed through mold molding.
However, when a screw pushes plastic in a molten state into a mold inside a machine barrel, a section of conveying pipeline is arranged on the part, away from the machine barrel and an injection molding sprue, of the plastic product, after the plastic product in the previous section is prepared and molded through the mold, the plastic product is taken out through opening and closing the mold, the molten plastic stored in the conveying pipeline is separated from the heat preservation and pressure maintaining of the machine barrel, the bottom and the sprue are separated from the mold, the screw at the top is pumped back, so that the molten plastic at the section is cooled, the molten plastic at the section cannot be fully and compactly filled, and when the section cannot be fully and compactly filled into the mold, an injection molding piece is caused to generate a vacuum air gun.
Disclosure of Invention
Aiming at the technical defects, the invention aims to provide the plastic product molding equipment capable of preventing the generation of bubbles, and the plastic product molding equipment can be used for performing heat preservation treatment on plastic separated from a machine barrel by arranging heat preservation heating elements at an injection molding sprue and the machine barrel, so that the problem of incompact cooling and filling after the existing plastic is separated from the machine barrel is solved.
In order to solve the technical problems, the invention adopts the following technical scheme: the invention provides a plastic product forming device capable of preventing bubbles from being generated, which comprises a die frame plate and an injection gate, wherein the top of the die frame plate is provided with a heat-insulating cavity, and the bottom of the heat-insulating cavity is communicated with the injection gate; a guide pipeline is arranged in the heat preservation cavity, the bottom of the guide pipeline is communicated with the machine barrel, the bottom of the guide pipeline is communicated with the injection molding sprue, and a heat preservation section is arranged in the heat preservation cavity of the guide pipeline; the top of the die frame plate is connected with a sealing element, the sealing element and the heat-preservation cavity form a closed cavity, a heat-preservation heating element is arranged in the heat-preservation cavity, and the heat-preservation heating element is wrapped at the heat-preservation section; and a bottom component is arranged at the communication position of the injection molding sprue and the guide pipeline and is used for supporting plastics at the heat preservation section.
Preferably, a raised pipeline is arranged on the guide pipeline and is positioned at the bottom of the heat preservation section, the diameter of a pipe orifice of the raised pipeline is smaller than that of the heat preservation section, and the diameter of the pipe orifice of the heat preservation section is larger than that of the upper end of the guide pipeline; the outside parcel of protruding pipeline has the gasbag piece, protruding pipeline is connected with the closing plate with heat preservation section junction, and the closing plate outside and the interior wall connection of heat preservation cavity, be connected with the conduction piece on the closing plate, and the conduction piece is used for producing the enclosure space department that heat preservation steam guide formed to closing plate and heat preservation cavity bottom with the heat-insulating member.
Preferably, the heat preservation heating member is including setting up a plurality of heating blocks in the heat preservation section outside, the heating block top is connected with the inlet tube, the inlet tube passes the sealing member, and the inlet tube passes the one end of sealing member and the heater connection in the barrel outside, the die holder board top is connected with the aspiration pump, and the aspiration tube of aspiration pump passes the sealing member and is used for regularly extracting inside heated air, be equipped with the air vent on the heating block, and the one end at the conducting piece is connected to the heating block.
Preferably, the conduction piece comprises supports connected with two sides of the heating block, a ventilation shell is connected between the two supports, the bottom of the ventilation shell is communicated with a supporting pipeline, one end of the supporting pipeline is connected with the sealing plate, and the supporting pipeline guides hot air to extrude the air bag block.
Preferably, the bottom of the raised pipeline is provided with a clamping ring, the inner wall of the bottom of the heat-preservation cavity is provided with a clamping groove, and the clamping ring is matched with the clamping groove.
Preferably, the outer side of the air bag block is connected with a plurality of return springs, and one end of each return spring is connected with the inner wall of the heat preservation cavity.
Preferably, the sealing member is including setting up the mounting groove at die carrier board top, the uncovered department in top of heat preservation cavity is equipped with sealed apron, and is equipped with the through-hole that is used for passing through guide tube, skirt and exhaust tube on the sealed apron respectively, sealed apron bottom is equipped with the installation cutting ferrule, installation cutting ferrule bottom is located inside the mounting groove, and the cooperation in the installation cutting ferrule outside wedges the circle, it is connected with a plurality of installation pieces of being connected with die carrier board top to wedge the circle outside.
Preferably, the bottom subassembly is including setting up the hemisphere casing in the runner pipe wall department of moulding plastics, hemisphere casing bottom is connected with a plurality of elastic rods, and elastic rod and the interior wall connection of the runner of moulding plastics, hemisphere casing is the metal material that can press the deformation, and is equipped with the overflow mouth on the hemisphere casing.
Preferably, the connection part of the guide pipeline and the machine barrel is a conical barrel body, and the conical barrel body wraps the outlet of the machine barrel.
The invention has the beneficial effects that: according to the invention, the die carrier plate communicated with the injection molding sprue is provided with the heat insulation cavity, hot air generated by the heater at the machine barrel is guided to the heat insulation heating element at the heat insulation cavity, the heat insulation heating element keeps a heat insulation state after plastic is separated from the machine barrel, and meanwhile, the plastic is supported by the bottom component, so that the plastic is conveniently and densely filled with molten plastic.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a plastic product molding apparatus for preventing generation of bubbles according to an embodiment of the present invention.
Fig. 2 is a schematic view of the overall explosion structure of the present invention.
Fig. 3 is a schematic structural diagram of the formwork plate and the heat-insulating heating member in the present invention.
Fig. 4 is a schematic structural view of the top of the formwork panel in the present invention.
FIG. 5 is a partial sectional view schematically illustrating the structure of the present invention.
FIG. 6 is a schematic view of the structure of the joint between the heat-insulating heating member and the guide pipe in the present invention.
FIG. 7 is a schematic view of the structure of the heat-insulating heating element according to the present invention.
Fig. 8 is a schematic view of the structure of the guide duct according to the present invention.
Fig. 9 is a schematic view of the structure of the sealing member of the present invention.
FIG. 10 is a schematic view of the bottom assembly of the present invention.
Description of the reference numerals: 1-mould plate, 2-heat preservation cavity, 3-injection moulding sprue, 4-guide pipeline, 5-sealing element, 6-heat preservation heating element, 7-bottom component, 8-conduction element, 41-heat preservation section, 42-raised pipeline, 43-air bag block, 44-sealing plate, 45-clamping ring, 46-clamping groove, 47-reset spring, 51-installation groove, 52-sealing cover plate, 53-installation clamping sleeve, 54-wedging ring, 55-installation block, 61-heating block, 62-guide pipe, 63-air pump, 64-air suction pipe, 71-hemispherical shell, 72-elastic rod, 73-overflow port, 81-support, 82-ventilation shell and 83-support pipeline.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b): as shown in fig. 1 to 10, the present invention provides a plastic product molding apparatus for preventing generation of bubbles, including a mold frame plate 1 and an injection gate 3, wherein the injection gate 3 is connected to the bottom of the mold frame plate 1 in a pipeline shape, the top of the mold frame plate 1 is provided with a heat preservation cavity 2, the upper section of the heat preservation cavity 2 is designed in a cylindrical shape, the bottom is designed in a conical cylinder shape, heat preservation treatment is performed through the cylindrical design of the upper section, the diameter of the cylindrical opening is larger than that of the conical cylinder shape bottom opening, and the bottom of the heat preservation cavity 2 is communicated with the injection gate 3; a guide pipeline 4 is arranged in the heat preservation cavity 2, the bottom of the guide pipeline 4 is communicated with the machine barrel, a connecting part of the guide pipeline 4 and the machine barrel is a conical barrel, the conical barrel is wrapped at an outlet of the machine barrel, the bottom of the guide pipeline 4 is communicated with the injection molding sprue 3, and a heat preservation section 41 is arranged in the heat preservation cavity 2 of the guide pipeline 4; the top of the die frame plate 1 is connected with a sealing element 5, the sealing element 5 and the heat preservation cavity 2 form a closed cavity, a heat preservation heating element 6 is arranged in the heat preservation cavity 2, and the heat preservation heating element 6 is wrapped at the heat preservation section 41; and a bottom component 7 is arranged at the communication position of the injection molding pouring gate 3 and the guide pipeline 4 and is used for supporting plastic at the heat preservation section 41.
In the injection molding process, injection molding raw materials are injected into the machine barrel through the charging opening, a screw mechanism for propulsion is arranged in the machine barrel, under the pushing action of the screw mechanism, the plastic is pushed to the heating part at the front end of the machine barrel to be heated, a plurality of heaters are wrapped on the outer side of the machine barrel to carry out melting and heating treatment on the plastic in the machine barrel, the plastic in a molten state is guided to the position of an injection molding sprue 3 through a guide pipeline 4, after the plastic product is injected, the injection mold is demolded to push out the plastic product, the plastic at the bottom of the bottom component 7 at the injection gate 3 is in the cavity pile body, the bottom component 7 has the recovery elasticity, thereby 4 bottoms of shutoff post guide tube way, guide tube way 4 are in the inside heat preservation 2 and carry out heat preservation through heat preservation heating member 6 and handle, are favorable to guaranteeing that the plastics that are in guide tube way 4 department are in the close filling state, reduce vacuum bubble and produce.
Furthermore, a raised pipeline 42 is arranged on the guide pipeline 4, the raised pipeline 42 is positioned at the bottom of the heat preservation section 41, the diameter of the pipe orifice of the raised pipeline 42 is smaller than that of the heat preservation section 41, and the diameter of the pipe orifice of the heat preservation section 41 is larger than that of the upper end of the guide pipeline 4; the bottom of the raised pipeline 42 is provided with a clamping ring 45, the inner wall of the bottom of the heat preservation cavity 2 is provided with a clamping groove 46, the clamping ring 45 is matched with the clamping groove 46, the outer side of the raised pipeline 42 is wrapped with an air bag block 43, the outer side of the air bag block 43 is connected with a plurality of reset springs 47, one ends of the reset springs 47 are connected with the inner wall of the heat preservation cavity 2, the joint of the raised pipeline 42 and the heat preservation section 41 is connected with a sealing plate 44, the outer side of the sealing plate 44 is connected with the inner wall of the heat preservation cavity 2, the sealing plate 44 is connected with a conducting piece 8, the conducting piece 8 is used for guiding heat preservation hot gas generated by the heat preservation heating piece 6 to a closed space formed by the sealing plate 44 and the bottom of the heat preservation cavity 2, after the plastic product at the front end is injected, the plastic vacancy at the injection gate 3 is simultaneously pumped back by a screw rod communicated with a machine barrel, and the plastic remained in the guide pipeline 4 is concentrated at the heat preservation section 41, simultaneously the heat preservation section 41 outside department keeps warm through heating block 61 and heats, be convenient for guarantee that the plastics of heat preservation section 41 department are in close filling state, the gasbag piece 43 that is located the protruding pipeline 42 outside design of heat preservation section 41 bottom department is behind the space that the heat-conduction of heating block 61 formed to closing plate 44, steam is to gasbag piece 43 extrusion, the protruding pipeline 42 indent of being convenient for, and then shorten 4 bottom opening diameters of guide pipe, simultaneously because the plastics vacancy of 3 departments of runner of moulding plastics, have elastic hemisphere casing 71 and resume the jack-up state, it is sealed to locate the guide pipe 4 bottom, support 4 bottom departments of guide pipe.
Further, the sealing member 5 includes an installation groove 51 disposed at the top of the mold frame plate 1, a sealing cover plate 52 is disposed at the open top of the thermal insulation cavity 2, and through holes for passing through the guide pipe 4, the guide pipe 62 and the air exhaust pipe 64 are respectively disposed on the sealing cover plate 52, an installation clamping sleeve 53 is disposed at the bottom of the sealing cover plate 52, the bottom of the installation clamping sleeve 53 is located inside the installation groove 51, a wedging ring 54 is fitted on the outer side of the installation clamping sleeve 53, a plurality of installation blocks 55 connected with the top of the mold frame plate 1 are connected to the outer side of the wedging ring 54, when installing, by passing the top of the guide pipe 4 through the through hole of the sealing cover plate 52, the tapered cylinder at the top of the guide pipe 4 in the scheme is detachable combination, and sequentially passes through the three guide pipes 62 through the through holes, the installation clamping sleeve 53 at the bottom of the sealing cover plate 52 is inserted inside the installation groove 51, because the fitting surfaces of the installation clamping sleeve 53 and the wedging ring 54 are two wedge surfaces, make installation cutting ferrule 53 and wedging circle 54 closely cooperate, wedge simultaneously and enclose 54 outside and pass through a plurality of installation piece 55 fixed connection in the die holder board 1 department, be convenient for increase stability, through sealed apron 52 with the inside sealed heat preservation clearance that forms of heat preservation cavity 2.
Further, bottom subassembly 7 is including setting up the hemisphere casing 71 in sprue 3 pipe wall department of moulding plastics, hemisphere casing 71 bottom is connected with a plurality of elastic rods 72, and elastic rod 72 and the inner wall connection of sprue 3 of moulding plastics, hemisphere casing 71 is the metal material that can press the deformation, and is equipped with overflow mouth 73 on hemisphere casing 71, and when normally pouring, molten plastics passes through hemisphere casing 71, flattens hemisphere casing 71, and the plastics of being convenient for overflow from the clearance department of hemisphere casing 71 and elastic rod 72, overflow mouth 73 on hemisphere casing 71 also is convenient for the overflow of plastics simultaneously, and after injection moulding accomplishes an injection molding, the sprue 3 bottom vacancy of moulding plastics this moment, hemisphere casing 71 resumes original jack-up state under self elastic action, and it is sealed to protruding pipeline 42 bottom sprag of guide pipe 4 bottom department.
Further, the heat preservation heating element 6 comprises a plurality of heating blocks 61 arranged on the outer side of the heat preservation section 41, the top of each heating block 61 is connected with a guide pipe 62, each guide pipe 62 penetrates through the sealing element 5, one end of each guide pipe 62 penetrating through the sealing element 5 is connected with a heater on the outer side of the machine barrel, the top of the die frame plate 1 is connected with an air suction pump 63, an air suction pipe 64 of each air suction pump 63 penetrates through the sealing element 5 to extract internal heating air at regular time, each heating block 61 is provided with a vent hole, the heating blocks 61 are connected to one end of the conducting element 8, heat generated by the heaters is conducted to the heating blocks 61 through connection balls and heaters on the tops of the guide pipes 62, the heating blocks 61 are annularly distributed at the heat preservation section 41 to heat preservation and heat the plastic at the heat preservation section 41, the plastic in the heat preservation section 41 is in a close filling state to reduce foaming, and meanwhile hot air generated by the heating blocks 61 is conducted to the supporting pipeline 83 from the ventilation shell 82 through the vent holes, the bottom that forms with hot gas distribution at closing plate 44 sees space department, extrude protruding pipeline 42 with gasbag piece 43 through hot gas, and then reduce the opening diameter of guide pipe 4 bottom, utilize the support that resets of the hemisphere casing 71 of bottom simultaneously, it keeps in heat preservation section 41 to be convenient for plastics, before next injection molding is moulded plastics, through setting for aspiration pump 63 air extraction time quantum, take out the inside hot gas of heat preservation cavity 2 fast, before the screw rod pours into guide pipe 4 with new molten plastics, take out the inside hot gas of heat preservation cavity 2 totally, guarantee that the plastics of heat preservation section 41 department and the molten plastics of newly-added are with being in heat preservation heating state.
Further, the conduction piece 8 comprises brackets 81 connected with two sides of the heating block 61, a ventilation shell 82 is connected between the two brackets 81, a supporting pipeline 83 is communicated with the bottom of the ventilation shell 82, one end of the supporting pipeline 83 is connected with the sealing plate 44, and the supporting pipeline 83 guides the hot air to extrude the air bag block 43.
When the injection molding machine is used, after the injection molding of the plastic product at the front end is completed, the plastic at the injection molding sprue 3 is vacant, the screw rod communicated with the machine barrel is withdrawn, the plastic remained in the guide pipeline 4 is concentrated at the insulation section 41, meanwhile, the heater is connected with the heater through the connecting ball at the top of the guide pipe 62, the heat generated by the heater is conducted to the heating block 61, the heating block 61 is annularly distributed at the insulation section 41, the insulation and heating of the plastic at the insulation section 41 are facilitated, the plastic in the insulation section 41 is in a close filling state, the bubbling is reduced, meanwhile, the hot air generated by the heating block 61 is conducted to the supporting pipeline 83 from the ventilation shell 82 through the vent hole, the hot air is distributed at the bottom viewing space formed by the sealing plate 44, the air bag block 43 is extruded to the raised pipeline 42 through the hot air, the opening diameter at the bottom of the guide pipeline 4 is reduced, and meanwhile, the resetting support of the hemispherical shell 71 at the bottom is utilized, the plastic is conveniently kept at the heat preservation section 41, before the next injection molding part is injected, the hot air in the heat preservation cavity 2 is quickly extracted by setting the air extraction time period of the air extraction pump 63, the new molten plastic is injected into the guide pipeline 4 by the screw rod, the hot air in the heat preservation cavity 2 is completely extracted, the plastic at the heat preservation section 41 and the newly added molten plastic are ensured to be in a heat preservation heating state, the plastic at the heat preservation section 41 is conveniently ensured to be in a close filling state, after the air bag block 43 arranged on the outer side of the raised pipeline 42 at the bottom of the heat preservation section 41 is thermally conducted to the space formed by the sealing plate 44 by the heating block 61, the hot air extrudes the air bag block 43, the raised pipeline 42 is conveniently concaved inwards, the opening diameter of the bottom of the guide pipeline 4 is further shortened, meanwhile, because the plastic at the injection molding sprue 3 is vacant, the elastic hemispherical shell 71 is restored to a jacking state, when the injection molding is normally, the molten plastic passes through the hemispherical shell 71 to flatten the hemispherical shell 71, so that the plastic can overflow from the gap between the hemispherical shell 71 and the elastic rod 72, meanwhile, the overflow port 73 on the hemispherical shell 71 can also facilitate the overflow of the plastic, after the injection molding is finished, the bottom of the injection molding sprue 3 is vacant, and the hemispherical shell 71 recovers the original jacking state under the elastic action of the hemispherical shell 71 to support and seal the bottom of the raised pipeline 42 at the bottom of the guide pipeline 4.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (4)
1. The plastic product molding equipment capable of preventing bubbles from generating is characterized by comprising a mold frame plate (1) and an injection molding sprue (3), wherein a heat insulation cavity (2) is arranged at the top of the mold frame plate (1), and the bottom of the heat insulation cavity (2) is communicated with the injection molding sprue (3);
a guide pipeline (4) is arranged in the heat preservation cavity (2), the bottom of the guide pipeline (4) is communicated with the machine barrel, the bottom of the guide pipeline (4) is communicated with the injection molding sprue (3), and a heat preservation section (41) is arranged in the heat preservation cavity (2) of the guide pipeline (4);
the top of the die frame plate (1) is connected with a sealing element (5), the sealing element (5) and the heat-preservation cavity (2) form a closed cavity, a heat-preservation heating element (6) is arranged in the heat-preservation cavity (2), and the heat-preservation heating element (6) is wrapped at the heat-preservation section (41);
a bottom component (7) is arranged at the communication position of the injection molding sprue (3) and the guide pipeline (4) and is used for supporting plastics at the heat preservation section (41);
a raised pipeline (42) is arranged on the guide pipeline (4), the raised pipeline (42) is positioned at the bottom of the heat preservation section (41), the diameter of the pipe orifice of the raised pipeline (42) is smaller than that of the heat preservation section (41), and the diameter of the pipe orifice of the heat preservation section (41) is larger than that of the upper end of the guide pipeline (4);
the outer side of the raised pipeline (42) is wrapped with an air bag block (43), a sealing plate (44) is connected to the joint of the raised pipeline (42) and the heat preservation section (41), the outer side of the sealing plate (44) is connected with the inner wall of the heat preservation cavity (2), a conduction piece (8) is connected to the sealing plate (44), and the conduction piece (8) is used for guiding heat preservation hot gas generated by the heat preservation heating piece (6) to a closed space formed by the sealing plate (44) and the bottom of the heat preservation cavity (2);
the heat preservation heating element (6) comprises a plurality of heating blocks (61) arranged on the outer side of a heat preservation section (41), the tops of the heating blocks (61) are connected with a guide pipe (62), the guide pipe (62) penetrates through a sealing element (5), one end of the guide pipe (62) penetrating through the sealing element (5) is connected with a heater on the outer side of a machine barrel, the top of the die frame plate (1) is connected with an air suction pump (63), an air suction pipe (64) of the air suction pump (63) penetrates through the sealing element (5) and is used for regularly sucking internal heating air, vent holes are formed in the heating blocks (61), and the heating blocks (61) are connected to one end of a conducting element (8);
the outer side of the air bag block (43) is connected with a plurality of return springs (47), and one ends of the return springs (47) are connected with the inner wall of the heat-preservation cavity (2);
the sealing element (5) comprises a mounting groove (51) arranged at the top of the die frame plate (1), a sealing cover plate (52) is arranged at an open top of the heat-insulating cavity (2), through holes for passing through a guide pipeline (4), a guide pipe (62) and an exhaust pipe (64) are respectively formed in the sealing cover plate (52), a mounting clamping sleeve (53) is arranged at the bottom of the sealing cover plate (52), the bottom of the mounting clamping sleeve (53) is positioned in the mounting groove (51), a wedging ring (54) is matched with the outer side of the mounting clamping sleeve (53), and a plurality of mounting blocks (55) connected with the top of the die frame plate (1) are connected to the outer side of the wedging ring (54);
bottom subassembly (7) are including setting up hemisphere casing (71) in runner (3) pipe wall department of moulding plastics, hemisphere casing (71) bottom is connected with a plurality of elastic rods (72), and elastic rod (72) and the interior wall connection of runner (3) of moulding plastics, hemisphere casing (71) are the metal material that can press the deformation, and are equipped with overflow mouth (73) on hemisphere casing (71).
2. The apparatus for molding plastic products for preventing generation of bubbles according to claim 1, wherein the conductive member (8) comprises brackets (81) connected to both sides of the heating block (61), and a vent housing (82) is connected between the two brackets (81), a support duct (83) is connected to the bottom of the vent housing (82), and one end of the support duct (83) is connected to the sealing plate (44), and the support duct (83) guides the hot air to extrude the air bladder block (43).
3. The apparatus for molding plastic products with prevention of bubble generation as claimed in claim 2, wherein the bottom of the raised pipe (42) is provided with a snap ring (45), the inner wall of the bottom of the thermal insulation cavity (2) is provided with a snap groove (46), and the snap ring (45) and the snap groove (46) are mutually matched.
4. The apparatus for molding plastic articles against the generation of bubbles according to claim 1, wherein the connecting point of the guide duct (4) and the cylinder is a conical cylinder, and the conical cylinder is wrapped at the outlet of the cylinder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111490386.5A CN114193725B (en) | 2021-12-08 | 2021-12-08 | Plastic product forming equipment capable of preventing bubbles from being generated |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111490386.5A CN114193725B (en) | 2021-12-08 | 2021-12-08 | Plastic product forming equipment capable of preventing bubbles from being generated |
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| CN114193725A CN114193725A (en) | 2022-03-18 |
| CN114193725B true CN114193725B (en) | 2022-08-26 |
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