CN112810019A - Electric drive pull-back type microwave heating foaming forming machine and foaming forming method thereof - Google Patents
Electric drive pull-back type microwave heating foaming forming machine and foaming forming method thereof Download PDFInfo
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- CN112810019A CN112810019A CN201911123931.XA CN201911123931A CN112810019A CN 112810019 A CN112810019 A CN 112810019A CN 201911123931 A CN201911123931 A CN 201911123931A CN 112810019 A CN112810019 A CN 112810019A
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- 238000005187 foaming Methods 0.000 title claims abstract description 117
- 238000010438 heat treatment Methods 0.000 title claims abstract description 32
- 244000208734 Pisonia aculeata Species 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000002347 injection Methods 0.000 claims abstract description 57
- 239000007924 injection Substances 0.000 claims abstract description 57
- 239000000463 material Substances 0.000 claims abstract description 41
- 230000005540 biological transmission Effects 0.000 claims abstract description 36
- 229920003023 plastic Polymers 0.000 claims abstract description 32
- 239000004033 plastic Substances 0.000 claims abstract description 32
- 239000007788 liquid Substances 0.000 claims abstract description 29
- 238000001816 cooling Methods 0.000 claims abstract description 17
- 239000011810 insulating material Substances 0.000 claims abstract description 6
- 239000003638 chemical reducing agent Substances 0.000 claims description 17
- 238000000465 moulding Methods 0.000 claims description 17
- 239000007787 solid Substances 0.000 claims description 5
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 claims description 3
- 238000010097 foam moulding Methods 0.000 claims 4
- 230000005611 electricity Effects 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000006260 foam Substances 0.000 description 4
- XVNPNGPNQJUMSL-UHFFFAOYSA-N 1-ethyl-1-phenylthiourea Chemical compound CCN(C(N)=S)C1=CC=CC=C1 XVNPNGPNQJUMSL-UHFFFAOYSA-N 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Images
Classifications
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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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/3415—Heating or cooling
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/58—Moulds
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
- B29C2035/0855—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using microwave
Abstract
The invention discloses an electrically-driven pull-back type microwave heating foaming forming machine and a foaming forming method thereof, wherein the electrically-driven pull-back type microwave heating foaming forming machine comprises a rack, a foaming forming mechanism, a charging basket, a vacuum cooling device, an electric cabinet, a driving motor and a transmission mechanism, the foaming forming mechanism comprises a fixed die, a movable die, a fixed die frame, a movable die frame and a foaming material injection pipe, each fixed die frame and the corresponding movable die frame are combined to form a complete die cavity, each die cavity corresponds to at least one foaming material injection pipe, the fixed die is provided with at least one microwave shielding cover, the movable die is provided with at least one microwave shielding cover matched with the microwave shielding cover, the movable die frame and the fixed die frame are both made of high-temperature-resistant insulating materials, the fixed die is positioned between the movable die and the driving motor, and the driving motor drives the movable die to move horizontally. The microwave heating device adopts microwave heating liquid to generate steam to match with foaming plastic for foaming, has simple and compact structure, reduces the integral volume of the foaming forming machine, has less energy consumption, no pollution and low manufacturing and using cost.
Description
Technical Field
The invention belongs to the field of plastic product processing, and particularly relates to an electrically-driven pull-back type microwave heating foaming forming machine and a foaming forming method thereof.
Background
At present, a foaming forming mechanism of a plastic foaming forming machine generally adopts the way that steam generated by a boiler or a steam generator is fed into a mold cavity and is matched with foaming plastic injected into the mold cavity for foaming, and the boiler or the steam generator generates steam, so that on one hand, the structure is relatively complex, and the integral volume of the foaming forming machine is increased; on the other hand, the boiler needs to use coal or gas, so that the energy consumption is high, the emission can also generate pollution, and the manufacturing and using cost is increased.
Disclosure of Invention
In order to solve the defects and shortcomings in the prior art, the invention provides the electrically-driven pull-back type microwave heating foaming forming machine and the foaming forming method thereof, wherein the microwave heating liquid is adopted to generate steam to be matched with foaming plastics for foaming, on one hand, the structure is simple and compact, the whole volume of the foaming forming machine is reduced, on the other hand, the microwave generator only needs electric energy, the energy consumption is small, no pollution is caused, the manufacturing and using cost is reduced, and the energy is saved and the environment is protected.
The technical scheme of the invention is as follows: an electrically-driven pull-back type microwave heating foaming forming machine comprises a rack, a foaming forming mechanism, a charging bucket, a vacuum cooling device, an electric cabinet, a driving motor and a transmission mechanism, wherein the foaming forming mechanism is installed on the rack, the charging bucket, the vacuum cooling device, the electric cabinet, the driving motor and the transmission mechanism are connected with the driving motor and the foaming forming mechanism, the foaming forming mechanism comprises a fixed die, a movable die, at least one fixed die frame fixed on the fixed die, at least one movable die frame fixed on the movable die, and at least one foaming material injection pipe installed on the fixed die, each fixed die frame and the movable die frame corresponding to the fixed die frame are combined to form a complete die cavity, each die cavity corresponds to at least one foaming material injection pipe, the foaming material injection pipe is used for injecting foaming plastics and liquid into the die cavity, at least one microwave shielding cover is arranged on the fixed die, at least one microwave shielding cover matched with the microwave, each microwave shielding cover covers the corresponding microwave shielding cover to form a complete microwave shielding cavity, each mold cavity corresponds to one microwave shielding cavity, each microwave shielding cavity is independently connected with a microwave generator, a mold shifting mold frame and a mold fixing mold frame are just combined together when the microwave shielding cover covers the microwave shielding cover, and the mold shifting mold frame and the mold fixing mold frame are both made of high-temperature-resistant insulating materials; the fixed die is positioned between the moving die and the driving motor, and the driving motor drives the moving die to horizontally move through the transmission mechanism; the transmission mechanism comprises a transmission shaft and a plurality of rocker arm pull rod assemblies which are connected with the transmission shaft and move the die and synchronously act.
The microwave heating device disclosed by the invention adopts microwave heating liquid to generate steam to be matched with foaming plastic for foaming, so that the structure is simple and compact, the whole volume of a foaming forming machine is reduced, and the microwave generator only needs electric energy, is low in energy consumption and free of pollution, not only reduces the manufacturing and using cost, but also is energy-saving and environment-friendly, and simultaneously, each mould cavity corresponds to one microwave shielding cavity for microwave heating, so that the foaming uniformity of products in each mould cavity is ensured, and the foaming quality of the products is ensured.
Preferably, one end of the foaming material injection pipe is provided with an injection head, the injection head sequentially penetrates through the die fixing frame, the microwave shielding cover and the die fixing frame and extends into the die cavity, and the other end of the foaming material injection pipe is provided with an injection port which is respectively connected with the charging basket and the liquid supply tank through pipelines.
The structure ensures the stability and reliability of the foaming plastic and the liquid injected into the cavity of the mould through the foaming material injection pipe.
Preferably, the rocker arm pull rod assembly comprises a rocker arm and a pull rod which are hinged to each other, one end of the rocker arm is rotatably connected to the transmission shaft, and a hinged seat at one end of the pull rod is hinged to the moving die.
The structure enables the driving motor to push or pull the moving die through the push rod assembly to move more stably and reliably.
Preferably, the injection port is arranged obliquely upwards, and the other end of the foaming material injection pipe is also provided with a material gun for driving the foaming plastic and the liquid entering from the injection port into the cavity of the mold; the fixed die frame is fixed on the inner side of the microwave shielding cover through a fixing column, the movable die frame is directly fixed on the inner side of the microwave shielding cover, and a through hole matched with the injection head is formed in the fixed die frame.
The structure ensures the smoothness of the foaming plastic and the liquid injected into the cavity of the mould through the foaming material injection pipe; when the microwave shielding cover is ensured to cover the microwave shielding cover, the mold moving mold frame is well combined with the mold fixing mold frame, and the tightness of the microwave shielding cavity and the mold cavity is ensured.
Preferably, the microwave generator is directly fixed to the microwave shield and emits microwaves into the microwave shield or is connected to the microwave shield through a waveguide and transmits microwaves into the microwave shield.
The structure can make the microwave generator be internally or externally arranged, and meets the requirements of different customers.
Preferably, the frame includes base, top frame, carriage and back seat, gu the mould is vertical to be installed between base and top frame, and is equipped with the perforation of cooperation foaming material injection pipe on the mould admittedly, the storage bucket is installed on the top frame, vacuum cooling device is including installing vacuum pump and vacuum bucket on the base.
The structure ensures that the die fixing, the charging basket and the vacuum cooling device are firmly and reliably installed, and meanwhile, the foaming material injection pipe is convenient to install.
Preferably, the moving die is connected with the rear seat through a guide rod, the driving motor is a servo motor, a first-stage speed reducer and a second-stage speed reducer are arranged between the driving motor and a transmission shaft, the transmission shaft is connected to the first-stage speed reducer, and the driving motor, the first-stage speed reducer and the second-stage speed reducer are installed on the fixed die.
The structure ensures that the moving of the moving die is stable and reliable, thereby ensuring that the matching between the moving die frame and the die fixing die frame is stable and reliable, and ensuring that the driving motor drives the transmission shaft to rotate more stably and reliably.
Preferably, the number of the microwave shielding cavities and the number of the die cavities are 2-5, and each die cavity corresponds to 2-8 foaming material injection pipes.
The structure can design plastic foaming forming machines with different specifications and sizes according to customer requirements on the premise of ensuring the foaming forming efficiency, and the quantity and the position of the foaming material injection pipes can be adjusted according to the specifications and the sizes of the plastic foaming forming machines.
A foam forming method of an electrically-driven pull-back type microwave heating foam forming machine comprises the following steps:
1) the driving motor pulls the moving mold to horizontally move to be close to the fixed mold through the transmission mechanism, so that each microwave shielding cover covers the corresponding microwave shielding cover to form a complete microwave shielding cavity, and at the moment, the moving mold frame and the corresponding fixed mold frame are combined together to form a complete mold cavity;
2) the foaming plastic and the liquid are respectively sent to the injection port through the pipeline to be mixed together and are injected into the cavity of the mold from the foaming material injection pipe through the material gun;
3) starting a microwave generator to emit microwaves into a microwave shielding cavity, allowing the microwaves to penetrate into the mold cavity to heat the foamed plastic and the liquid, evaporating the liquid to form steam to match the foamed plastic for foaming and molding, and then cooling by a vacuum cooling device;
4) after the foaming molding is finished, the driving motor pushes the moving mold to be far away from the fixed mold through the transmission mechanism, so that the moving mold frame and the fixed mold frame are separated, and a product after the foaming molding is taken out.
Preferably, the mold moving frame and the mold fixing frame are both made of plastic high-temperature-resistant insulating materials.
The microwave heating device disclosed by the invention adopts microwave heating liquid to generate steam to be matched with foaming plastic for foaming, so that the structure is simple and compact, the whole volume of a foaming forming machine is reduced, and the microwave generator only needs electric energy, is low in energy consumption and free of pollution, not only reduces the manufacturing and using cost, but also is energy-saving and environment-friendly, and simultaneously, each mould cavity corresponds to one microwave shielding cavity for microwave heating, so that the foaming uniformity of products in each mould cavity is ensured, and the foaming quality of the products is ensured.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic top view of the present invention;
in the drawing, 1, a mold fixing frame, 2, a mold moving frame, 3, a microwave generator, 4, a microwave shielding cover, 5, a microwave shielding cover, 6, a mold fixing frame, 7, a mold moving frame, 8, a foaming material injection pipe, 9, an injection head, 10, an injection port, 11, a material gun, 12, a base, 13, a fixing column, 14, a guide rod, 15, a top frame, 16, a support frame, 17, a rear seat, 18, a driving motor, 19, a primary speed reducer, 20, a secondary speed reducer, 21, a transmission shaft, 22, a rocker arm, 23, a pull rod, 24, a hinged seat, 25, a material barrel, 26, a vacuum barrel, 27, a vacuum pump, 28 and an electric cabinet are arranged.
Detailed Description
The present invention will be described in further detail with reference to the attached drawings, but the present invention is not limited thereto.
As shown in fig. 1 and 2, an electrically driven pull-back type microwave heating foaming forming machine comprises a frame, a foaming forming mechanism arranged on the frame, a charging basket 25, a vacuum cooling device, an electric cabinet 28, a driving motor 18 and a transmission mechanism connecting the driving motor 18 and the foaming forming mechanism, wherein the foaming forming mechanism comprises a fixed die 1, a movable die 2, two fixed die frames 6 fixed on the fixed die 1, two movable die frames 7 fixed on the movable die 2 and 4 foaming material injection pipes 8 arranged on the fixed die 1, each fixed die frame and the corresponding movable die frame are combined to form a complete die cavity, each die cavity corresponds to 2 foaming material injection pipes 8, the foaming material injection pipes 8 are used for injecting foaming plastics and liquid into the die cavity, two microwave shielding covers 4 are arranged on the fixed die 1, two microwave shielding covers 5 matched with the microwave shielding covers 4 are arranged on the movable die 2, each microwave shielding cover covers the corresponding microwave shielding cover to form a complete microwave shielding cavity, each mold cavity corresponds to one microwave shielding cavity, each microwave shielding cavity is independently connected with the microwave generator 3, and the mold moving mold frame 7 and the mold fixing mold frame 6 are just combined together when the microwave shielding cover 5 covers the microwave shielding cover 4; the fixed die 1 is positioned between the moving die 2 and the driving motor 18, and the driving motor 18 drives the moving die 2 to move horizontally through the transmission mechanism; the transmission mechanism comprises a transmission shaft 21 and four groups of rocker arm pull rod assemblies which are connected with the transmission shaft 21 and the moving die 2 and act synchronously. One end of the foaming material injection pipe 8 is provided with an injection head 9, the injection head 9 sequentially penetrates through the fixed die 1, the microwave shielding cover 4 and the fixed die frame 6 to extend into the die cavity, the other end of the foaming material injection pipe 8 is provided with an injection port 10, and the injection port 10 is respectively connected with the charging basket 25 and the liquid supply tank through pipelines. The push rod assembly comprises two upper push rods 22 and two lower push rods 23 which are hinged together, wherein one of the upper push rods and one of the lower push rods are connected to the transmission shaft 21 in a positive and negative rotating mode, and the other upper push rod and the other lower push rod are hinged to the movable die 2 through a hinge seat 24. The injection opening 10 is arranged obliquely upwards, and the other end of the foaming material injection pipe 8 is also provided with a material gun 11 for driving the foaming plastic and the liquid entering from the injection opening 10 into the cavity of the mold; the fixed mould frame 6 is fixed on the inner side of the microwave shielding cover 4 through a fixed column 13, the movable mould frame 7 is directly fixed on the inner side of the microwave shielding cover 5, and a through hole matched with the injection head 9 is formed in the fixed mould frame 6. The microwave generator 3 is directly fixed to the microwave shield 4 and emits microwaves into the microwave shield 4. The frame includes base 12, top frame 15, carriage 16 and back seat 17, and solid mould 1 is vertical to be installed between base 12 and top frame 15, and is equipped with the perforation of cooperation foaming material filling tube 8 on the solid mould 1, and storage bucket 25 installs on top frame 15, and vacuum cooling device is including installing vacuum pump 27 and vacuum bucket 26 on base 12. The moving die 2 is connected with a rear seat 17 through a guide rod 14, the driving motors 18 are servo motors, the number of the driving motors and the number of the transmission shafts are two, a first-stage speed reducer 19 and a second-stage speed reducer 20 are arranged between each driving motor and the transmission shaft 21, the transmission shafts 21 are connected to the first-stage speed reducer 19, and four groups of rocker arm pull rod assemblies are connected to two ends of the two transmission shafts respectively in a pairwise mode. The driving motor 18, the primary speed reducer 19 and the secondary speed reducer 20 are installed on the fixed die 1.
A foam forming method of an electrically-driven pull-back type microwave heating foam forming machine comprises the following steps:
1) the driving motor pulls the moving mold to horizontally move to be close to the fixed mold through the transmission mechanism, so that each microwave shielding cover covers the corresponding microwave shielding cover to form a complete microwave shielding cavity, and at the moment, the moving mold frame and the corresponding fixed mold frame are combined together to form a complete mold cavity;
2) the foaming plastic and the liquid are respectively sent to the injection port through the pipeline to be mixed together and are injected into the cavity of the mold from the foaming material injection pipe through the material gun;
3) starting a microwave generator to emit microwaves into a microwave shielding cavity, allowing the microwaves to penetrate into the mold cavity to heat the foamed plastic and the liquid, evaporating the liquid to form steam to match the foamed plastic for foaming and molding, and then cooling by a vacuum cooling device;
4) after the foaming molding is finished, the driving motor pushes the mold moving frame to horizontally move through the transmission mechanism to be far away from the fixed mold, so that the mold moving frame and the fixed mold frame are separated, and a product after the foaming molding is taken out.
The mold moving frame 7 and the mold fixing frame 6 are both made of plastic high-temperature-resistant insulating materials.
The rocker arm pull rod assembly in the invention is a conventional transmission mechanism purchased in the market, so the specific structure of the rocker arm pull rod assembly is not described in detail.
The vacuum cooling device of the present invention is a conventional vacuum cooling device commercially available, and therefore, detailed description thereof will be omitted.
The PLC controller can be configured in the electric control box, and the action frequency and the action time of the microwave generator, the driving motor and other components can be automatically controlled only by setting action parameters.
The invention is mainly used for foaming and molding expandable plastic particles such as EPS, EPP, EPTU and the like.
The liquid for foaming in the invention usually adopts clean water, the liquid supply tank usually adopts a clean water tank, the clean water tank is generally an external component and is connected with the liquid injection port through a pipeline, and the water in the water tank is delivered to the liquid injection port through a water pump and is delivered into the die cavity together with the foamed plastic.
The microwave heating device disclosed by the invention adopts microwave heating liquid to generate steam to be matched with foaming plastic for foaming, so that the structure is simple and compact, the whole volume of a foaming forming machine is reduced, and the microwave generator only needs electric energy, is low in energy consumption and free of pollution, not only reduces the manufacturing and using cost, but also is energy-saving and environment-friendly, and simultaneously, each mould cavity corresponds to one microwave shielding cavity for microwave heating, so that the foaming uniformity of products in each mould cavity is ensured, and the foaming quality of the products is ensured.
Claims (10)
1. The utility model provides an electricity drives pull-back formula microwave heating foaming make-up machine, includes the frame, installs foaming forming mechanism, storage bucket, vacuum cooling device, electric cabinet, driving motor in the frame and connects driving motor and foaming forming mechanism's drive mechanism, foaming forming mechanism is including solid mould, moving the mould, fix at least one on solid mould die frame and fix at least one on moving the mould and move the mould die frame and install at least one foaming material filling tube on solid mould, its characterized in that: each fixed mold frame and the corresponding movable mold frame are combined to form a complete mold cavity, each mold cavity corresponds to at least one foaming material injection pipe, the foaming material injection pipes are used for injecting foaming plastics and liquid into the mold cavity, the fixed mold is provided with at least one microwave shielding cover, the movable mold is provided with at least one microwave shielding cover matched with the microwave shielding cover, each microwave shielding cover covers the microwave shielding cover corresponding to the microwave shielding cover to form a complete microwave shielding cavity, each mold cavity corresponds to one microwave shielding cavity, each microwave shielding cavity is independently connected with a microwave generator, the movable mold frame and the fixed mold frame are just combined together when the microwave shielding cover covers the microwave shielding cover, and the movable mold frame and the fixed mold frame are both made of high-temperature-resistant insulating materials; the fixed die is positioned between the moving die and the driving motor, and the driving motor drives the moving die to horizontally move through the transmission mechanism; the transmission mechanism comprises a transmission shaft and a plurality of rocker arm pull rod assemblies which are connected with the transmission shaft and move the die and synchronously act.
2. The electric drive pull-back type microwave heating foaming molding machine as claimed in claim 1, wherein: and an injection head is arranged at one end of the foaming material injection pipe, the injection head sequentially penetrates through the die fixing frame, the microwave shielding cover and the die fixing frame to extend into the die cavity, and an injection port is arranged at the other end of the foaming material injection pipe and is respectively connected with the charging basket and the liquid supply tank through pipelines.
3. The electric drive pull-back type microwave heating foaming molding machine as claimed in claim 2, wherein: the rocker arm pull rod assembly comprises a rocker arm and a pull rod which are hinged with each other, one end of the rocker arm is rotatably connected to the transmission shaft, and a hinged seat at one end of the pull rod is hinged to the moving die.
4. The electric drive pull-back type microwave heating foaming molding machine as claimed in claim 2, wherein: the injection opening is arranged obliquely upwards, and the other end of the foaming material injection pipe is also provided with a material gun for driving foaming plastic and liquid entering from the injection opening into the cavity of the mold; the fixed die frame is fixed on the inner side of the microwave shielding cover through a fixing column, the movable die frame is directly fixed on the inner side of the microwave shielding cover, and a through hole matched with the injection head is formed in the fixed die frame.
5. The electric drive pull-back type microwave heating foaming molding machine as claimed in claim 1, wherein: the microwave generator is directly fixed on the microwave shielding cover and emits microwaves into the microwave shielding cover or is connected to the microwave shielding cover through a waveguide tube and transmits the microwaves into the microwave shielding cover.
6. The electric drive pull-back type microwave heating foaming molding machine as claimed in claim 1, wherein: the frame includes base, top frame, carriage and back seat, gu the mould is vertical to be installed between base and top frame, and is equipped with the perforation of cooperation foaming material injection pipe on the mould admittedly, the storage bucket is installed on the top frame, vacuum cooling device is including installing vacuum pump and vacuum bucket on the base.
7. The electric drive pull-back type microwave heating foaming molding machine as claimed in claim 6, wherein: the moving die is connected with the rear seat through the guide rod, the driving motor is a servo motor, a first-stage speed reducer and a second-stage speed reducer are arranged between the driving motor and the transmission shaft, the transmission shaft is connected to the first-stage speed reducer, and the driving motor, the first-stage speed reducer and the second-stage speed reducer are installed on the fixed die.
8. The electric drive pull-back type microwave heating foaming molding machine as claimed in claim 1, wherein: the number of the microwave shielding cavities and the number of the die cavities are 2-5, and each die cavity corresponds to 2-8 foaming material injection pipes.
9. The foam molding method of an electrically driven pull-back type microwave heating foam molding machine according to claim 1, characterized in that: the method comprises the following steps:
1) the driving motor pulls the moving mold to horizontally move to be close to the fixed mold through the transmission mechanism, so that each microwave shielding cover covers the corresponding microwave shielding cover to form a complete microwave shielding cavity, and at the moment, the moving mold frame and the corresponding fixed mold frame are combined together to form a complete mold cavity;
2) the foaming plastic and the liquid are respectively sent to the injection port through the pipeline to be mixed together and are injected into the cavity of the mold from the foaming material injection pipe through the material gun;
3) starting a microwave generator to emit microwaves into a microwave shielding cavity, allowing the microwaves to penetrate into the mold cavity to heat the foamed plastic and the liquid, evaporating the liquid to form steam to match the foamed plastic for foaming and molding, and then cooling by a vacuum cooling device;
4) after the foaming molding is finished, the driving motor pushes the mold moving frame to be horizontally far away from the fixed mold through the transmission mechanism, so that the mold moving frame and the mold fixing frame are separated, and a product after the foaming molding is taken out.
10. The foam molding method of the electrically driven pull-back type microwave heating foam molding machine according to claim 9, characterized in that: the mold moving frame and the mold fixing frame are both made of plastic high-temperature-resistant insulating materials.
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| CN201911123931.XA CN112810019A (en) | 2019-11-18 | 2019-11-18 | Electric drive pull-back type microwave heating foaming forming machine and foaming forming method thereof |
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| CN201911123931.XA CN112810019A (en) | 2019-11-18 | 2019-11-18 | Electric drive pull-back type microwave heating foaming forming machine and foaming forming method thereof |
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2019
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Application publication date: 20210518 |