CN115383992A - Environment-friendly plastic injection molding equipment and molding process - Google Patents
Environment-friendly plastic injection molding equipment and molding process Download PDFInfo
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- CN115383992A CN115383992A CN202211086494.0A CN202211086494A CN115383992A CN 115383992 A CN115383992 A CN 115383992A CN 202211086494 A CN202211086494 A CN 202211086494A CN 115383992 A CN115383992 A CN 115383992A
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- die holder
- die
- injection molding
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 49
- 239000004033 plastic Substances 0.000 title claims abstract description 23
- 229920003023 plastic Polymers 0.000 title claims abstract description 23
- 238000000465 moulding Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims description 28
- 239000000498 cooling water Substances 0.000 claims description 20
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims 3
- 230000007613 environmental effect Effects 0.000 claims 1
- 238000000605 extraction Methods 0.000 claims 1
- 239000003292 glue Substances 0.000 abstract 1
- 238000005086 pumping Methods 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 230000005415 magnetization Effects 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
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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
- 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
- B29C45/26—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
- 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
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
-
- 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
- B29C45/40—Removing or ejecting moulded articles
- B29C45/43—Removing or ejecting moulded articles using fluid under pressure
-
- 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
- B29C45/64—Mould opening, closing or clamping devices
- B29C45/67—Mould opening, closing or clamping devices hydraulic
-
- 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
- B29C45/73—Heating or cooling of the mould
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention provides an environment-friendly plastic injection molding device which comprises a base and a mold assembly, wherein the mold assembly comprises a first mold base and a second mold base, the first mold base is provided with a first mold, the second mold base is provided with a second mold, a plurality of air limiting channels which are transversely arranged and are arranged in parallel are arranged in the first mold, an air limiting rod which is transversely arranged is arranged in each air limiting channel, and an air sealing sheet is arranged at one end, close to the molding surface of the first mold, of each air limiting rod. According to the invention, air pump equipment is used for pumping air, and at the moment, negative pressure is formed at the port of the air limiting channel, so that a workpiece is firmly adsorbed on the first die; along with first mould and second mould break away from completely, control air pump equipment and carry out air feed work this moment, jet-propelled by limit gas channel port department this moment to glue sticky work piece on with first mould and blow off, accomplish the drawing of patterns of work piece, the drawing of patterns process does not lead to the fact hard roof pressure to the work piece, thereby effectively guarantees the quality of work piece.
Description
Technical Field
The invention relates to the technical field of injection molding equipment, in particular to environment-friendly plastic injection molding equipment and a molding process.
Background
In the production and manufacturing process of the injection molding process, thermoplastic plastics or thermosetting materials are made into main molding equipment of plastic products with various shapes by using a plastic molding die, and the injection molding is realized by an injection molding machine and the die.
When a molded workpiece is stripped by a mold used in a traditional injection molding process, a knock-pin mode is usually adopted to eject the workpiece in the mold so as to complete the separation of the workpiece and the mold. However, in the process of jacking and contacting the jacking pin with the workpiece, particularly for the workpieces which are tightly adhered to the die, the jacking pin is easy to damage the surface of the workpiece, even cause deformation and fracture of the workpiece; when a workpiece with a small size is formed, the size of the used top pin is smaller, and the workpiece is easy to damage.
Disclosure of Invention
In order to solve the above problems, the present invention provides an environment-friendly plastic injection molding apparatus and a molding process thereof, so as to more exactly solve the above problems.
The invention is realized by the following technical scheme:
the invention provides an environment-friendly plastic injection molding device which comprises a base and a mold assembly, wherein the mold assembly comprises a first mold base and a second mold base, the first mold base is fixed on the base, the second mold base is correspondingly arranged on one side of the first mold base, which is close to the second mold base, is connected with a first mold, the second mold base is arranged at a position, which corresponds to the first mold, of the second mold base, a pair of hydraulic cylinders are arranged on two sides of the second mold base, telescopic rods of the hydraulic cylinders extend in a direction corresponding to one side of the first mold base, a support is integrally formed on the side edge of the second mold base, the end parts of the telescopic rods of the hydraulic cylinders are fixedly connected with the support arranged on the second mold base, a discharging opening is arranged on the base and between the first mold base and the second mold base, a plurality of gas limiting channels which are transversely arranged and are arranged in parallel are arranged in the first mold, the gas limiting channels penetrate through the molding surface of the first mold, a gas limiting rod which is transversely arranged in the gas limiting channels is arranged in the first mold, one end, which is close to the molding surface of the first mold base, a gas limiting channel is communicated with a gas nozzle arranged in the first mold base, and a gas nozzle branch gas guiding channel is arranged in the first mold base, and a nozzle is arranged in the gas guiding channel, and a nozzle is communicated with one side of the gas guiding channel, and communicated with the gas guiding nozzle of the first mold base.
Furthermore, one side of the first die holder, which is close to the second die holder, is provided with a pair of positioning pins, and one side of the second die holder, which is close to the first die holder, and the positions, which correspond to the pair of positioning pins, are provided with positioning pin holes.
Furthermore, a T-shaped guide rail is arranged on the upper surface of the base and below the second die holder, the direction of the T-shaped guide rail is consistent with the telescopic direction of the telescopic rod of the hydraulic cylinder, a sliding seat is arranged at the bottom of the second die holder, and the sliding seat is in sliding connection with the T-shaped guide rail in a matched mode.
Further, the air sealing sheet is preferably a stepped top sheet, and the air sealing sheet is matched and clamped in the air limiting channel.
Furthermore, the middle part of the air limiting channel is provided with an elastic cavity, a top ring is integrally formed at the part of the air limiting rod, which is positioned in the elastic cavity, the top ring is in sliding connection with the inner part of the elastic cavity in a matching manner, one side of the top ring, which is far away from the molding surface of the first mold, is provided with a pressure spring, and the two ends of the pressure spring are respectively abutted against the side wall of the inner cavity of the elastic cavity and the top ring.
Furthermore, an electromagnet is arranged in the first die holder and in a position corresponding to the gas limiting rod, an armature is arranged at one end, close to the electromagnet, of the gas limiting rod, and the magnetization end of the electromagnet corresponds to the position of the armature.
Furthermore, the first die holder and the surface of the first die to be attached are integrally provided with positioning pins, sealing ring grooves are formed in positions, corresponding to the positioning pins, of the first die, the positioning pins are matched with the sealing ring grooves, and the positioning pins are arranged on the peripheries of the air limiting channel and the air guide channel.
Furthermore, the heating ring is embedded in the second die holder and arranged on the periphery of the injection molding nozzle.
Further, the inside heat transfer channel who sets up the multichannel array of seting up of second mould, the annular channel of heat transfer channel for seting up in second mould profiled surface periphery, the inside top that just is located the second mould of second die base is equipped with the reposition of redundant personnel chamber, and second die base upper end is equipped with the feed liquor pipe that is linked together with the reposition of redundant personnel chamber, and the inside heat transfer channel who establishes of second mould passes through drain hole and reposition of redundant personnel chamber intercommunication, the inside second die base that just is located second mould below is equipped with the chamber that converges, and the lower extreme of second die base is equipped with the fluid-discharge tube that is linked together with the chamber that converges, and the inside heat transfer channel who establishes of second mould passes through the drain hole and the chamber intercommunication that converges.
A molding process applying the environment-friendly plastic injection molding equipment comprises the following steps:
the method comprises the following steps: injection molding: the second die holder is driven by controlling the hydraulic cylinder, the second die holder travels along the T-shaped guide rail under the matching of the sliding seat and the T-shaped guide rail arranged at the bottom of the second die holder until a second die connected to the second die holder is matched with a first die connected to the first die holder to form an injection molding cavity, an injection molding nozzle arranged in the second die holder is connected with injection molding equipment through an injection molding guide pipe, molten adhesive can be injected into the injection molding cavity formed by the first die and the second die, and in the process of injecting the molten adhesive, a heating ring performs processing work, the internal temperature of the injection molding nozzle is kept, and the smoothness of the molten adhesive flowing through the injection molding nozzle is kept;
step two: and (3) plastic cooling: a liquid inlet pipe on the second die holder is connected with a cooling water supply device, cooling water is injected into the flow dividing cavity from the cooling water supply device, the cooling water is divided into the liquid guide holes through the liquid guide holes, the formed workpiece in the second die is uniformly and quickly cooled, the water after heat exchange is collected in the flow converging cavity, and finally the cooling water flows back to the cooling water supply device through a liquid discharge pipe to form a cooling cycle;
step three: demoulding the workpiece: the second die holder is driven by controlling the hydraulic cylinder to separate the first die from the second die, the electromagnet is controlled to work to magnetize the magnetization end in the separation process, the armature is attracted, the air limiting rod pulls the air guiding sealing sheet to retract into the first die until the air dividing passage is communicated with the forming surface of the first die, the air pipe joint is connected with air pump equipment through an air guide pipe, air is extracted by the air pump equipment, negative pressure is formed at the port of the air limiting passage at the moment, and the workpiece is firmly adsorbed on the first die; with the complete separation of the first mold and the second mold, controlling the air pump device to supply air, and spraying air from the port of the air limiting channel, so as to blow out the workpiece adhered to the first mold and complete the demolding of the workpiece; and finally, after the workpiece is demoulded, stopping the work of the electromagnet, resetting the gas limiting rod under the action of the pressure spring, and enabling the gas sealing sheet to be matched with the forming surface of the first mold again so as to carry out the next injection molding operation.
The invention has the beneficial effects that:
1. according to the invention, cooling water is injected into the shunting cavity by cooling water supply equipment, the cooling water is shunted into the liquid guide hole through the liquid guide hole, heat exchange and cooling are carried out on a formed workpiece in the second die, water liquid after heat exchange is collected in the confluence cavity, and finally the cooling water supply equipment is refluxed through the liquid discharge pipe to form a cooling cycle, and the heat exchange channel is an annular channel arranged on the periphery of the forming surface of the second die, so that the workpiece is cooled more uniformly and rapidly;
2. the second die holder is driven by controlling the hydraulic cylinder to separate the first die from the second die, the electromagnet is controlled to work to magnetize the magnetization end in the separation process, the armature is attracted, the air limiting rod pulls the air guiding sealing sheet to retract into the first die until the air dividing channel is communicated with the forming surface of the first die, the air pipe joint is connected with air pump equipment through an air guide pipe, air is extracted by the air pump equipment, and at the moment, negative pressure is formed at the port of the air limiting channel to firmly adsorb a workpiece on the first die; with the complete separation of the first mold and the second mold, the air pump device is controlled to supply air, and air is sprayed from the port of the air limiting channel, so that the workpiece stuck on the first mold is blown out, the demolding of the workpiece is completed, and the workpiece is not rigidly pressed in the demolding process, so that the quality of the workpiece is effectively ensured;
3. according to the invention, the second die holder is driven by controlling the hydraulic cylinder, and the second die holder travels along the T-shaped guide rail under the matching of the sliding seat and the T-shaped guide rail arranged at the bottom of the second die holder until a second die connected to the second die holder is matched with a first die connected to the first die holder to form an injection molding cavity, so that the stability of the first die and the second die in the butt joint process is ensured.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a top view of the structure of the present invention;
FIG. 3 is a half sectional view of a three-dimensional structure of the present invention;
FIG. 4 is an enlarged view at A in FIG. 3;
FIG. 5 is a cross-sectional elevation view of the structure of the present invention;
FIG. 6 is a sectional view of the second mold base and the second mold according to the present invention.
In the figure: 1. a base; 101. a feed opening; 102. a T-shaped guide rail; 2. a first die holder; 201. positioning pins; 3. a second die holder; 301. a positioning pin hole; 302. a support; 303. a slide base; 304. injection molding a nozzle; 305. a heating ring; 306. a shunting cavity; 3061. a manifold chamber; 307. a liquid inlet pipe; 3071. a liquid discharge pipe; 4. a first mold; 401. a gas-limiting channel; 402. a gas-limiting rod; 4021. air sealing sheet; 4022. a bullet cavity; 4023. a top ring; 4024. a pressure spring; 4025. an armature; 403. an electromagnet; 4031. a magnetized end; 404. an air guide passage; 4041. an air distributing channel; 4042. a gas pipe joint; 5. a second mold; 501. a heat exchange channel; 502. a drain hole; 6. and a hydraulic cylinder.
Detailed Description
In order to more clearly and completely describe the technical scheme of the invention, the invention is further described with reference to the accompanying drawings.
Referring to fig. 1-6, the present invention provides an environment-friendly plastic injection molding apparatus, including a base 1 and a mold assembly, the mold assembly includes a first mold base 2 and a second mold base 3, the first mold base 2 is fixed on the base 1, the second mold base 3 is correspondingly disposed on one side of the first mold base 2, one side of the first mold base 2 close to the second mold base 3 is connected with a first mold 4, the second mold base 3 is provided with a second mold 5 corresponding to the first mold 4, two sides of the second mold base 3 are provided with a pair of hydraulic cylinders 6, a telescopic rod direction of the hydraulic cylinders 6 extends along a direction corresponding to one side of the first mold base 2, a bracket 302 is integrally formed on a side of the second mold base 3, an end of the telescopic rod of the hydraulic cylinder 6 is fixedly connected with the bracket 302 disposed on the second mold base 3, the second mold base 3 is driven by controlling the hydraulic cylinder 6, a second die 5 connected on a second die holder 3 is matched with a first die 4 connected on a first die holder 2 to form an injection molding cavity, one side of the first die holder 2 close to the second die holder 3 is provided with a pair of positioning pins 201, one side of the second die holder 3 close to the first die holder 2 is provided with a positioning pin hole 301 corresponding to the pair of positioning pins 201 and used for positioning in the matching process of the first die 4 and the first die 4, a T-shaped guide rail 102 is arranged on the upper surface of a base 1 and below the second die holder 3, the guiding direction of the T-shaped guide rail 102 is consistent with the telescopic direction of a telescopic rod of a hydraulic cylinder 6, the bottom of the second die holder 3 is provided with a sliding seat 303, the sliding seat 303 is matched and slidingly connected with the T-shaped guide rail 102 to ensure the stability in the butt joint process of the first die 4 and the second die 5, a feed opening 101 is arranged on the base 1 and between the first die holder 2 and the second die holder 3 and used for feeding and collecting workpieces,
as shown in fig. 4, a plurality of air limiting channels 401 transversely opened and arranged in parallel are formed inside the first mold 4, the air limiting channels 401 penetrate through the molding surface of the first mold 4, an air limiting rod 402 transversely arranged is arranged inside the air limiting channels 401, an air sealing sheet 4021 is arranged at one end, close to the molding surface of the first mold 4, of the air limiting rod 402, the outer surface of the air sealing sheet 4021 is consistent with the molding surface of the first mold 4, an air guide channel 404 communicated with the first mold base 2 is formed in the middle of the first mold 4, a gas distribution channel 4041 communicated with the air limiting channel 401 is formed in one end, located inside the first mold 4, of the gas guide channel 404, the gas guide channel 4041 is arranged at a position close to the air sealing sheet 4021, one end, located inside the first mold base 2, of the gas pipe connector 4042 is connected to one end of the gas guide channel 404, an injection nozzle 304 is arranged inside the second mold base 3, and a material spraying end of the injection nozzle 304 is communicated with one side of the second mold 5.
The air sealing sheet 4021 is preferably a stepped top sheet, and the air sealing sheet 4021 is engaged with the air limiting channel 401 to ensure the positioning engagement of the air sealing sheet 4021 and the port of the air limiting channel 401.
An elastic cavity 4022 is arranged in the middle of the air limiting channel 401, a top ring 4023 is integrally formed at the position, located in the elastic cavity 4022, of the air limiting rod 402, the top ring 4023 is in matched sliding connection with the interior of the elastic cavity 4022, a pressure spring 4024 is arranged on one side, away from the forming surface of the first die 4, of the top ring 4023, two ends of the pressure spring 4024 are respectively abutted against the side wall of the inner cavity of the top ring 4023 and the elastic cavity 4022, an electromagnet 403 is arranged in the first die holder 2 and in a position corresponding to the air limiting rod 402, an armature 4025 is arranged at one end, close to the electromagnet 403, of the air limiting rod 402, the magnetizing end 4031 of the electromagnet 403 corresponds to the position of the armature 4025, the magnetizing end 4031 is magnetized by controlling the electromagnet 403 to be magnetized, the armature 4025 is further attracted, the air limiting rod 402 pulls the air sealing sheet 4021 to retract into the first die 4 until the air distributing channel 4041 is communicated with the forming surface of the first die 4, and a communicated air channel 40341 is formed with the outer end of the air limiting channel 401.
First die holder 2 has locating pin 201 with the surperficial integrated into one piece of the first mould 4 of laminating, and first mould 4 has seted up sealed annular groove corresponding to the position of locating pin 201, and in locating pin 201 cooperation and the sealed annular groove, locating pin 201 set up in the periphery of limit gas passageway 401, air guide way 404, guarantees the leakproofness of first die holder 2 and first mould 4 junction.
The inside heating ring 305 that inlays of second die holder 3, and heating ring 305 sets up in the periphery of the nozzle 304 of moulding plastics, and heating ring 305 carries out processing work, keeps the nozzle 304 internal temperature of moulding plastics, avoids the melten gel temperature to reduce, keeps the melten gel to flow through the smoothness nature of the nozzle 304 of moulding plastics.
The second die 5 is internally provided with a plurality of heat exchange channels 501 arranged in an array, each heat exchange channel 501 is an annular channel arranged on the periphery of the forming surface of the second die 5, a shunting cavity 306 is arranged inside the second die holder 3 and above the second die 5, the upper end of the second die holder 3 is provided with a liquid inlet pipe 307 communicated with the shunting cavity 306, each heat exchange channel 501 arranged inside the second die 5 is communicated with the shunting cavity 306 through a liquid guide hole 502, a converging cavity 3061 is arranged inside the second die holder 3 and below the second die 5, the lower end of the second die holder 3 is provided with a liquid discharge pipe 3071 communicated with the converging cavity 3061, and each heat exchange channel 501 arranged inside the second die 5 is communicated with the converging cavity 3061 through the liquid guide hole 502.
A molding process using an environmentally friendly plastic injection molding apparatus, comprising the steps of:
the method comprises the following steps: injection molding: the second die holder 3 is driven by controlling the hydraulic cylinder 6, the second die holder 3 is enabled to travel along the T-shaped guide rail 102 under the matching of the sliding seat 303 and the T-shaped guide rail 102 arranged at the bottom of the second die holder 3 until a second die 5 connected to the second die holder 3 is matched with a first die 4 connected to the first die holder 2 to form an injection molding cavity, an injection nozzle 304 arranged in the second die holder 3 is connected with injection molding equipment through an injection molding guide pipe, so that molten adhesive can be injected into the injection molding cavity formed by the first die 4 and the second die 5, and in the process of injecting the molten adhesive, a heating ring 305 performs processing work, the internal temperature of the injection nozzle 304 is kept, and the smoothness of the molten adhesive flowing through the injection nozzle 304 is kept;
step two: and (3) plastic cooling: a liquid inlet pipe 307 on the second die holder 3 is connected with a cooling water supply device, cooling water is injected into the shunting cavity 306 from the cooling water supply device, the cooling water is shunted into the liquid guide hole 502 through the liquid guide hole 502 to uniformly and quickly cool the formed workpiece in the second die 5, the water liquid after heat exchange is collected in the confluence cavity 3061, and finally the cooling water supply device is refluxed through a liquid discharge pipe 3071 to form a cooling cycle;
step three: demoulding of the workpiece: the second die holder 3 is driven by the control hydraulic cylinder 6, so that the first die 4 is separated from the second die 5, in the separation process, the electromagnet 403 is controlled to work to magnetize the magnetized end 4031, and then the armature 4025 is attracted, the air limiting rod 402 pulls the air sealing sheet 4021 to retract into the first die 4 until the air distributing channel 4041 is communicated with the molding surface of the first die 4, the air pipe joint 4042 is connected with air pump equipment through an air guide pipe, air is extracted by the air pump equipment, and negative pressure is formed at the port of the air limiting channel 401 at the moment to firmly adsorb a workpiece on the first die 4; with the first mold 4 and the second mold 5 completely separated, controlling the air pump device to supply air, and spraying air from the port of the air limiting channel 401, so as to blow out the workpiece adhered to the first mold 4 and complete the demolding of the workpiece; finally, after the workpiece is demoulded, the electromagnet 403 stops working, the gas limiting rod 402 is reset under the action of the pressure spring 4024, the gas sealing sheet 4021 is matched with the forming surface of the first mold 4 again, and then the next injection molding operation can be carried out.
Of course, the present invention may have other embodiments, and based on the embodiments, those skilled in the art can obtain other embodiments without any creative effort, and all of them are within the protection scope of the present invention.
Claims (10)
1. The utility model provides an environmental protection plastic injection moulding equipment, includes base (1) and mould subassembly, its characterized in that, the mould subassembly includes first die holder (2) and second die holder (3), and first die holder (2) are fixed in on base (1), and second die holder (3) correspond and set up in one side of first die holder (2), one side that first die holder (2) are close to second die holder (3) is connected with first mould (4), and second die holder (3) correspond the position of first mould (4) and are equipped with second mould (5), the both sides of second die holder (3) are equipped with a pair of pneumatic cylinder (6), and the telescopic link direction of pneumatic cylinder (6) extends along the direction that corresponds one side of first die holder (2), side integrated into one piece of second die holder (3) has support (302), and the telescopic link tip of pneumatic cylinder (6) is equipped with feed opening (101) with support (302) fixed connection that second die holder (3) were established on base (1) and be located between first die holder (2) and second die holder (3), first mould (4) inside is seted up multichannel and is transversely seted up and parallel arrangement's air-limiting channel (401), and air-limiting channel (401) run through to the shaping surface of first mould (4), and the inside of air-limiting channel (401) is equipped with air-limiting rod (402) of horizontal setting, and air-limiting rod (402) are close to the one end on first mould (4) shaping surface and are equipped with The gas seal piece (4021), the surface of gas seal piece (4021) is unanimous with the shaping surface of first mould (4), the middle part of first mould (4) is inside with first die holder (2) to be seted up one and is linked together leads air flue (404), leads air flue (404) to be located first mould (4) inside one end and sets up branch air flue (4041) that are linked together with limit gas passageway (401), divides air flue (4041) to set up in the position that is close to gas seal piece (4021), leads air flue (404) to be located first die holder (2) one end and is connected with air pipe connector (4042), second die holder (3) inside is equipped with injection nozzle (304), and the material end that spouts of injection nozzle (304) is linked together with second mould (5) one side.
2. The environment-friendly plastic injection molding device of claim 1, wherein a pair of positioning pins (201) are disposed on one side of the first mold base (2) close to the second mold base (3), and positioning pin holes (301) are disposed on one side of the second mold base (3) close to the first mold base (2) and corresponding to the pair of positioning pins (201).
3. The environment-friendly plastic injection molding device according to claim 1, wherein a T-shaped guide rail (102) is arranged on the upper surface of the base (1) and below the second mold base (3), the direction of the T-shaped guide rail (102) is consistent with the telescopic direction of the telescopic rod of the hydraulic cylinder (6), a sliding seat (303) is arranged at the bottom of the second mold base (3), and the sliding seat (303) is in sliding connection with the T-shaped guide rail (102) in a matching manner.
4. The injection molding apparatus and process as claimed in claim 1, wherein the air sealing plate (4021) is preferably a stepped top plate, and the air sealing plate (4021) is engaged with the air limiting channel (401).
5. The environment-friendly plastic injection molding device as claimed in claim 1, wherein an elastic cavity (4022) is arranged in the middle of the air limiting channel (401), a top ring (4023) is integrally formed at a position of the air limiting rod (402) in the elastic cavity (4022), the top ring (4023) is in sliding fit with the interior of the elastic cavity (4022), a pressure spring (4024) is arranged on one side of the top ring (4023) away from the molding surface of the first mold (4), and two ends of the pressure spring (4024) are respectively abutted against the side walls of the inner cavities of the top ring (4023) and the elastic cavity (4022).
6. The environment-friendly plastic injection molding device according to claim 1, wherein an electromagnet (403) is arranged inside the first mold base (2) and at a position corresponding to the gas limiting rod (402), an armature (4025) is arranged at one end of the gas limiting rod (402) close to the electromagnet (403), and a magnetized end (4031) of the electromagnet (403) corresponds to the armature (4025).
7. The injection molding device of claim 1, wherein the first mold base (2) and the surface of the first mold (4) are integrally formed with a positioning pin (201), the first mold (4) is provided with a sealing ring groove at a position corresponding to the positioning pin (201), the positioning pin (201) is fitted in the sealing ring groove, and the positioning pin (201) is disposed at the peripheries of the air limiting channel (401) and the air guiding channel (404).
8. The injection molding apparatus of claim 1, wherein a heating ring (305) is embedded in the second mold base (3), and the heating ring (305) is disposed at the periphery of the injection nozzle (304).
9. The environment-friendly plastic injection molding device as claimed in claim 1, wherein a plurality of heat exchange channels (501) are formed in the second mold (5) in an array manner, each heat exchange channel (501) is an annular channel formed in the periphery of the molding surface of the second mold (5), a branch cavity (306) is formed in the second mold base (3) and located above the second mold (5), a liquid inlet pipe (307) communicated with the branch cavity (306) is formed in the upper end of the second mold base (3), the heat exchange channels (501) formed in the second mold (5) are communicated with the branch cavity (306) through liquid guide holes (502), a confluence cavity (3061) is formed in the second mold base (3) and located below the second mold (5), a liquid discharge pipe (3071) communicated with the confluence cavity (3061) is formed at the lower end of the second mold base (3), and the heat exchange channels (501) formed in the second mold (5) are communicated with the confluence cavity (3061) through the liquid guide holes (502).
10. A molding process using the environmentally friendly plastic injection molding apparatus of any one of claims 1 to 9, comprising the steps of:
the method comprises the following steps: injection molding: the second die holder (3) is driven by controlling the hydraulic cylinder (6), the second die holder (3) is made to travel along the T-shaped guide rail (102) under the matching of the sliding seat (303) and the T-shaped guide rail (102) arranged at the bottom of the second die holder (3) until a second die (5) connected to the second die holder (3) is matched with a first die (4) connected to the first die holder (2) to form an injection molding cavity, an injection nozzle (304) arranged in the second die holder (3) is connected with injection molding equipment through an injection molding guide pipe, so that molten rubber can be injected into the injection molding cavity formed by the first die (4) and the second die (5), and in the process of rubber injection, a heating ring (305) is used for processing, the internal temperature of the injection nozzle (304) is kept, and the smoothness of the molten rubber flowing through the injection nozzle (304) is kept;
step two: and (3) plastic cooling: a liquid inlet pipe (307) on the second die holder (3) is connected with a cooling water supply device, cooling water is injected into the shunting cavity (306) from the cooling water supply device, the cooling water is shunted into the liquid guide hole (502) through the liquid guide hole (502), a formed workpiece in the second die (5) is uniformly and rapidly cooled, water liquid after heat exchange is collected in the confluence cavity (3061), and finally the cooling water supply device is reflowed through a liquid discharge pipe (3071) to form a cooling cycle;
step three: demoulding of the workpiece: the second die holder (3) is driven by the control hydraulic cylinder (6), so that the first die (4) is separated from the second die (5), in the separation process, the electromagnet (403) is controlled to work to magnetize the magnetizing end (4031), and then the armature (4025) is attracted, the air limiting rod (402) pulls the air sealing sheet (4021) to retract into the first die (4) until the air distributing channel (4041) is communicated with the forming surface of the first die (4), the air pipe joint (4042) is connected with air pump equipment through an air guide pipe, the air pump equipment performs air extraction work, negative pressure is formed at the port of the air limiting channel (401), and a workpiece is firmly adsorbed on the first die (4); with the complete separation of the first mold (4) and the second mold (5), controlling the air pump device to supply air, and ejecting air from the port of the air limiting channel (401), so as to blow out the workpiece stuck on the first mold (4) and complete the demolding of the workpiece; and finally, after the workpiece is demoulded, stopping the work of the electromagnet (403), resetting the air limiting rod (402) under the action of the pressure spring (4024), and enabling the air sealing sheet (4021) to be matched with the forming surface of the first mold (4) again so as to carry out the next injection molding operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211086494.0A CN115383992A (en) | 2022-09-07 | 2022-09-07 | Environment-friendly plastic injection molding equipment and molding process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211086494.0A CN115383992A (en) | 2022-09-07 | 2022-09-07 | Environment-friendly plastic injection molding equipment and molding process |
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| Publication Number | Publication Date |
|---|---|
| CN115383992A true CN115383992A (en) | 2022-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211086494.0A Pending CN115383992A (en) | 2022-09-07 | 2022-09-07 | Environment-friendly plastic injection molding equipment and molding process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116749447A (en) * | 2023-05-26 | 2023-09-15 | 联塑市政管道（河北）有限公司 | A pipe fitting injection mold |
| CN116922707A (en) * | 2023-07-03 | 2023-10-24 | 明光利拓智能科技有限公司 | Relay armature magnetic sheet compound die injection molding equipment |
-
2022
- 2022-09-07 CN CN202211086494.0A patent/CN115383992A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116749447A (en) * | 2023-05-26 | 2023-09-15 | 联塑市政管道（河北）有限公司 | A pipe fitting injection mold |
| CN116922707A (en) * | 2023-07-03 | 2023-10-24 | 明光利拓智能科技有限公司 | Relay armature magnetic sheet compound die injection molding equipment |
| CN116922707B (en) * | 2023-07-03 | 2025-12-12 | 明光利拓智能科技有限公司 | A relay armature magnetic sheet molding and injection molding equipment |
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