CN115447061B - Injection molding process of PP (polypropylene) plastic product with good high-temperature performance and high toughness - Google Patents

Injection molding process of PP (polypropylene) plastic product with good high-temperature performance and high toughness Download PDF

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Publication number
CN115447061B
CN115447061B CN202211408501.4A CN202211408501A CN115447061B CN 115447061 B CN115447061 B CN 115447061B CN 202211408501 A CN202211408501 A CN 202211408501A CN 115447061 B CN115447061 B CN 115447061B
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die
injection molding
cavity
automatic discharging
mould
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CN115447061A (en
Inventor
颜乐游
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Jinjiang Xingtai Can Co ltd
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Jinjiang Xingtai Can Co ltd
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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
    • B29C45/03—Injection moulding apparatus
    • B29C45/04—Injection moulding apparatus using movable moulds or mould halves
    • B29C45/0441—Injection moulding apparatus using movable moulds or mould halves involving a rotational movement
    • 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
    • B29C45/72—Heating or cooling
    • B29C45/73—Heating or cooling of the mould
    • 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
    • B29C45/7331—Heat transfer elements, e.g. heat pipes
    • 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
    • B29C45/74—Heating or cooling of the injection unit
    • 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
    • B29C2045/2683—Plurality of independent mould cavities in a single mould

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

The invention relates to an injection molding process of a PP (polypropylene) plastic product with good high-temperature performance and high toughness, which belongs to the injection molding technology of the PP plastic product and comprises an injection molding device, wherein the injection molding device comprises a processing platform, a lifting movement control assembly, a rotary multi-cavity automatic discharging type movable mold, a finished product storage box, a support frame, a lateral fixing frame, a material injection assembly, a support rod and a fixed mold, the support frame is symmetrically arranged on two sides of the bottom of the processing platform, the lifting movement control assembly is fixedly arranged on one side of the top of the processing platform, the rotary multi-cavity automatic discharging type movable mold is arranged at one end of the top of the lifting movement control assembly, and the finished product storage box is arranged in the processing platform in a penetrating manner.

Description

Injection molding process of PP (polypropylene) plastic product with good high-temperature performance and high toughness
Technical Field
The invention relates to the technical field of injection molding of PP (polypropylene) plastic products, in particular to an injection molding process of a PP plastic product with good high-temperature performance and high toughness.
Background
The injection molding process is a process for manufacturing a semi-finished product with a certain shape by operations of pressurizing, injecting, cooling, separating and the like of a molten raw material, and an environment-friendly plastic product injection molding process is provided in the Chinese invention patent with the application number of CN202011393258.4, wherein a plurality of cylindrical mold cavities are correspondingly arranged on an injection upper mold and an injection bottom mold, so that a one-cavity multi-mold injection molding mode can be realized, the production efficiency is improved, scales are carved on a limit baffle, the position of the limit baffle can be manually adjusted according to the length of a required molded product, the purpose that one mold can simultaneously perform injection molding on a plurality of cylindrical products with different lengths is realized, the production efficiency is improved, the diversification of the molded product is improved, the locking unit and the supporting unit can be matched to support and lock the mold, the molded product is conveniently separated from the mold, an injection mechanism can uniformly inject an injection liquid into the cylindrical mold cavities through injection holes, the condition that the surface of the molded product is uneven in injection molding can be prevented from generating bubbles, the product quality is improved, the comparison file is high in the production efficiency, the high-efficiency and the high-efficiency of the PP product is improved, and the high-efficiency of the high-efficiency plastic product is provided for the whole PP plastic production process.
The present application is made in view of this.
Disclosure of Invention
In order to overcome the technical defects in the prior art, the invention provides an injection molding process of a PP plastic product with good high-temperature performance and high toughness, a rotary multi-cavity automatic discharging type movable mold is separated from a fixed mold, the rotary multi-cavity automatic discharging type movable mold automatically pushes a product out of a mold cavity when the rotary multi-cavity automatic discharging type movable mold is separated from the fixed mold, so that the product falls into a finished product storage box at the bottom, the rotary multi-cavity automatic discharging type movable mold is provided with a plurality of mold cavities, specifically six mold cavities, every two of which are in a group and adjacent, after a product is produced, the same type product can be continuously produced according to the subsequent production requirements, the products can also be produced simultaneously in various types, the use is simple and convenient, the automation degree is high, manual demolding is not needed, the production efficiency is high, and the production modes are various.
The technical solution adopted by the invention is as follows: the injection molding device comprises a processing platform, a lifting mobile control assembly, a rotary multi-mold-cavity automatic discharging type movable mold, a finished product storage box, a support frame, a lateral fixing frame, an injection assembly, a support rod and a fixed mold, wherein the bottom of the processing platform is symmetrically arranged on two sides of the support frame, the lifting mobile control assembly is fixedly arranged on one side of the top of the processing platform, the rotary multi-mold-cavity automatic discharging type movable mold is arranged on one end of the top of the lifting mobile control assembly, the finished product storage box is arranged in the processing platform in a penetrating mode, the finished product storage box is located on the bottom of the rotary multi-mold-cavity automatic discharging type movable mold, the injection assembly is arranged on one side of the top of the processing platform through the lateral fixing frame, the fixed mold is arranged on the top of the processing platform through the support rod, the fixed mold is communicated with the injection assembly, and the injection assembly specifically comprises the following steps:
1. equipment debugging carries out the circular telegram debugging to each equipment, guarantees the work that each equipment can be stable, then tries the processing, guarantees to annotate and can last to let in alright production behind the melting material in the material subassembly.
2. Melting raw materials, namely fully melting the raw materials after the raw materials are put into the die through the material injection assembly, and then conveying the raw materials into a fixed die;
3. the material is annotated in the compound die, and the product control rotation type multi-cavity automatic discharging formula of producing as required moves the mould on corresponding die cavity and changes to one side of deciding the mould, then rethread lift mobile control subassembly moves the mould with rotation type multi-cavity automatic discharging formula and promotes to deciding mould one side for rotation type multi-cavity automatic discharging formula moves the mould and merges with deciding the mould, later annotates the material subassembly and annotates the material, makes the raw materials be full of the die cavity.
4. Cooling separation, through the continuous cold water that lets in to rotation type multimode chamber automatic discharging formula movable mould in, make the molten material fully cooling between rotation type multimode chamber automatic discharging formula movable mould and the fixed mould, the product fully cools off the back and moves mould and fixed mould separation through the lift mobile control subassembly control rotation type multimode chamber automatic discharging formula movable mould, rotation type multimode chamber automatic discharging formula movable mould is automatic when both separate releases the die cavity with the product, make the product fall into the finished product of bottom and deposit the case, thereby accomplish one shot production.
5. The intelligent production, rotation type multimode chamber automatic discharging formula movable mould has a plurality of die cavitys, specifically is six die cavitys, and two liang are a set of and adjacent, can continuously produce the same model product according to follow-up production demand after producing a product, also can multiple model product coproduction.
Preferably, the lifting mobile control assembly comprises a fixed base, a driving motor and a rotating screw rod, the fixed base is arranged at the top of the processing platform, the driving motor is installed on one side of the top of the fixed base, the rotating screw rod is connected with an output shaft of the driving motor, the lifting mobile control assembly further comprises a movable support, a lateral connecting rod and a rotating control frame, the lateral connecting rod is welded at one end of the top of the movable support, the rotating control frame is fixedly installed at one end of the lateral connecting rod, the movable support is in threaded connection with the rotating screw rod, the bottom of the movable support is attached to the outer wall of the top of the fixed base, the rotating screw rod is driven by the driving motor, the movable support is installed on the rotating screw rod and cannot rotate, other components mounted on the movable support are adjusted through the position of the rotating multi-cavity automatic discharging type movable die, basic die assembly work is achieved, a servo motor is embedded in the rotating control frame, the output shaft of the servo motor is connected with the central shaft of the rotating multi-cavity automatic discharging type movable die, the discharging type movable die can be opened through the servo motor, different types of the rotating multi-cavity automatic discharging type movable die can be adjusted, and the injection molding die can be produced, and the injection molding die can be changed.
Preferably, many die cavitys of rotation type automatic discharging formula movable mould includes the hexagon rotary die, the chamber of moulding plastics has been seted up on the lateral wall of hexagon rotary die, and the chamber of moulding plastics of here is promptly for aforementioned die cavity, it leads to water cooling chamber to have seted up in the hexagon rotary die, the both ends symmetry of leading to water cooling chamber is provided with the water receiving mouth, and through the continuous cooling water that lets in the water receiving mouth during the in-service use, can the efficient cools off the product, many die cavitys of rotation type automatic discharging formula movable mould still includes nitrogen spring and slurcam, nitrogen spring is fixed to be set up in the intracavity of moulding plastics, the slurcam with nitrogen spring's one end is connected, just the slurcam activity sets up the intracavity of moulding plastics is adjusted through nitrogen spring, and nitrogen spring contracts when the raw materials pours into for the raw materials is at the intracavity shaping of moulding plastics, and the many die cavity automatic discharging formula movable mould of rotation type separates with the stationary mould behind the product shaping, and nitrogen spring alright push away the slurcam intercommunication product outside this moment, realize automatic drawing of patterns function.
Preferably, the material injection assembly comprises a motor box, a heating pipe, a discharging pipe and a feeding pipe, the heating pipe is fixedly installed on one side of the motor box, the motor box is installed on the lateral fixing frame through screws, one end of the heating pipe is connected with the fixed die through the discharging pipe, the feeding pipe is arranged at the top of the heating pipe in a penetrating mode, heating wires penetrate through the heating pipe, the material injection assembly further comprises a feeding hopper, an electric heating net, a driving motor and a spiral discharging paddle, the feeding hopper is fixedly arranged at one end of the top of the feeding pipe, the electric heating net is fixedly arranged in the feeding hopper, the driving motor is installed in the motor box, the spiral discharging paddle is connected with an output shaft of the driving motor and is located in the heating pipe, when the material injection assembly is actually used, raw materials are fed through the feeding hopper, are primarily melted through the arrangement of the double-layer electric heating net and then enter the heating pipe, the raw materials are pushed out through the driving motor, and are secondarily heated in the heating pipe to ensure sufficient melting, and then are extruded to the fixed die and the rotary multi-automatic discharging die cavity, so that the basic raw material conveying function of the multi-automatic discharging die is realized.
The invention has the beneficial effects that: the rotary multi-mold-cavity automatic discharging type movable mold is separated from the fixed mold, the rotary multi-mold-cavity automatic discharging type movable mold automatically pushes a product out of the mold cavity when the rotary multi-mold-cavity automatic discharging type movable mold and the fixed mold are separated, so that the product falls into a finished product storage box at the bottom, the rotary multi-mold-cavity automatic discharging type movable mold is provided with a plurality of mold cavities, specifically six mold cavities are arranged in a group and adjacent to each other, after one product is produced, the same-type product can be continuously produced according to subsequent production requirements, and products of various types can be produced simultaneously.
Drawings
FIG. 1 is a schematic view of the right side view of the injection molding apparatus according to the present invention.
FIG. 2 is a schematic view of the left side view of the injection molding apparatus according to the present invention.
FIG. 3 is a schematic diagram of the external structure of a rotary multi-cavity automatic discharging type moving mold in the injection molding apparatus of the present invention.
Fig. 4 is a sectional view of a rotary multi-cavity automatic discharging type moving mold in the injection molding apparatus of the present invention.
FIG. 5 is a schematic structural diagram of a lifting movement control assembly of the injection molding apparatus of the present invention.
FIG. 6 is a schematic view of a structure of a sprue assembly in the injection molding apparatus of the present invention.
FIG. 7 is a view showing the internal structure of the injection unit in the injection molding apparatus according to the present invention.
FIG. 8 is a flow chart of the present invention.
Description of reference numerals: in the figure: 1. a processing platform; 2. a lifting movement control assembly; 201. a fixed base; 202. a drive motor; 203. rotating the screw rod; 204. moving the support; 205. a lateral connecting rod; 206. rotating the control frame; 3. the rotary multi-cavity automatic discharging type movable mould; 301. a hexagonal rotary die; 302. an injection molding cavity; 303. a water cooling cavity is filled; 304. a water receiving port; 305. a nitrogen spring; 306. a push plate; 4. a finished product storage box; 5. a support frame; 6. a lateral fixing frame; 7. a material injection assembly; 701. a motor case; 702. heating a tube; 703. a discharge pipe; 704. a feed pipe; 705. a feeding hopper; 706. an electric heating net; 707. a heat-insulated motor; 708. a screw discharging paddle; 8. a support bar; 9. and (5) fixing the mold.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
as shown in fig. 1-8, the present embodiment provides an injection molding process for a PP plastic product with good high temperature performance and high toughness, which uses an injection molding device, the injection molding device includes a processing platform 1, a lifting movement control assembly 2, a rotary multi-cavity automatic discharging type moving mold 3, a finished product storage box 4, a support frame 5, a lateral fixing frame 6, a material injection assembly 7, a support rod 8 and a fixed mold 9, the support frame 5 is symmetrically arranged on both sides of the bottom of the processing platform 1, the lifting movement control assembly 2 is fixedly installed on one side of the top of the processing platform 1, the rotary multi-cavity automatic discharging type moving mold 3 is installed on one end of the top of the lifting movement control assembly 2, the finished product storage box 4 is inserted into the processing platform 1, the finished product storage box 4 is located at the bottom of the rotary multi-cavity automatic discharging type moving mold 3, the material injection assembly 7 is installed on one side of the top of the processing platform 1 through the lateral fixing frame 6, the fixed die 9 is arranged at the top of the processing platform 1 through a supporting rod 8, the fixed die 9 is communicated with the material injection assembly 7, the injection molding device comprises the following steps of debugging equipment, carrying out power-on debugging on each equipment, ensuring that each equipment can work stably, then carrying out trial processing, ensuring that the production can be started after molten materials are continuously introduced into the material injection assembly 7, melting raw materials, fully melting the raw materials after the raw materials are put into the material injection assembly 7, then conveying the raw materials into the fixed die 9, closing the dies and injecting the materials, controlling a corresponding die cavity on the rotary multi-die-cavity automatic discharging type movable die 3 to be rotated to one side of the fixed die 9 according to products to be produced, and then pushing the rotary multi-die-cavity automatic discharging type movable die 3 to one side of the fixed die 9 through the lifting movement control assembly 2, make rotation type multimode chamber automatic discharging formula movable mould 3 and fixed mould 9 merge, later annotate material subassembly 7 and annotate the material, make the raw materials full of the die cavity, the cooling separation, through to the continuous cooling water that lets in rotation type multimode chamber automatic discharging formula movable mould 3, make the molten material between rotation type multimode chamber automatic discharging formula movable mould 3 and the fixed mould 9 fully cool down, after the product fully cools down, through the lift mobile control subassembly 2 control rotation type multimode chamber automatic discharging formula movable mould 3 and the separation of fixed mould 9, rotation type multimode chamber automatic discharging formula movable mould 3 is automatic to be released the die cavity with the product when both separate, make the product fall into the finished product of bottom and deposit case 4, thereby accomplish one-time production, intelligent production, rotation type multimode chamber automatic discharging formula movable mould 3 has six die cavities, two liang are a set of and adjacent, can continuously produce the same model product according to follow-up production demand after producing a product, also can the simultaneous production of multiple model product.
According to the invention, the rotary multi-cavity automatic discharging type movable die 3 is controlled through the lifting movement control assembly 2, basic die assembly and demolding are realized, cold water is continuously introduced into the rotary multi-cavity automatic discharging type movable die 3, molten materials between the rotary multi-cavity automatic discharging type movable die 3 and the fixed die 9 are sufficiently cooled, the rotary multi-cavity automatic discharging type movable die 3 is separated from the fixed die 9 after the products are sufficiently cooled, the products are automatically pushed out of the die cavities by the rotary multi-cavity automatic discharging type movable die 3 when the products are separated, the products fall into the finished product storage box 4 at the bottom, the rotary multi-cavity automatic discharging type movable die 3 is provided with six die cavities, every two die cavities are adjacent, after one product is produced, the same type products can be continuously produced according to subsequent production requirements, the products with various types can be simultaneously produced, the use is simple and convenient, the automation degree is high, manual demolding is not needed, the production efficiency is high, the production modes are various, for PP plastic products with good high-temperature performance, the toughness is relatively high, long time is needed in the mixing and molding processes, the equipment in the method can be used, the high-efficiency and the prepared PP plastic products can be effectively and the injection molding effect is good.
As shown in fig. 5, the lifting and moving control assembly 2 includes a fixed base 201, a driving motor 202 and a rotating screw 203, the fixed base 201 is disposed on the top of the processing platform 1, the driving motor 202 is installed on one side of the top of the fixed base 201, the rotating screw 203 is connected with an output shaft of the driving motor 202, the lifting and moving control assembly 2 further includes a movable support 204, a lateral connecting rod 205 and a rotating control frame 206, the lateral connecting rod 205 is welded on one end of the top of the movable support 204, the rotating control frame 206 is fixedly installed on one end of the lateral connecting rod 205, the movable support 204 is in threaded connection with the rotating screw 203, the bottom of the movable support 204 is attached to the outer wall of the top of the fixed base 201, the rotating screw 203 is driven by the driving motor 202, the position of the movable support 204 which is installed on the rotating screw 203 and cannot rotate is adjusted, other components which are carried on the movable support 204, the position of the movable mold 3 including the automatic discharging type multi-mold cavity is adjusted, so as to realize basic demolding work, the output shaft of the servo motor 206 is connected with a central shaft of the automatic discharging type multi-cavity automatic discharging mold 3, and the automatic discharging mold can be adjusted by the different types of the rotary type multi-mold cavity, thereby satisfying the requirements of the automatic discharging mold cavity on the rotary type injection molding production.
As shown in fig. 3 and 4, the rotary multi-cavity automatic discharging moving mold 3 includes a hexagonal rotating mold 301, an injection molding cavity 302 is formed on an outer side wall of the hexagonal rotating mold 301, the injection molding cavity 302 is the mold cavity, a water cooling cavity 303 is formed in the hexagonal rotating mold 301, water receiving ports 304 are symmetrically formed in two ends of the water cooling cavity 303, when the rotary multi-cavity automatic discharging moving mold 3 is in actual use, a product can be efficiently cooled by continuously introducing cold water into the water receiving ports 304, the nitrogen spring 305 and a pushing plate 306 are further included, the nitrogen spring 305 is fixedly arranged in the injection molding cavity 302, the pushing plate 306 is connected with one end of the nitrogen spring 305, the pushing plate 306 is movably arranged in the injection molding cavity 302, the position of the pushing plate 306 is adjusted through the nitrogen spring 305, the nitrogen spring 305 contracts when a raw material is injected, so that the raw material is molded in the injection molding cavity 302, the rotary multi-cavity automatic discharging moving mold 3 is separated from a fixed mold 9 after the product is molded, and the nitrogen spring 305 can push the product to be communicated with the pushing plate 306 to the product to the outside, and an automatic demolding function is realized.
Specifically, as shown in fig. 6 and 7, the injection assembly 7 includes a motor box 701, a heating pipe 702, a discharging pipe 703 and a feeding pipe 704, the heating pipe 702 is fixedly installed at one side of the motor box 701, the motor box 701 is screwed on the lateral fixing frame 6, one end of the heating pipe 702 is connected with the fixed mold 9 through the discharging pipe 703, the feeding pipe 704 is inserted into the top of the heating pipe 702, heating wires are inserted into the heating pipe 702, the injection assembly 7 further includes a feeding hopper 705, an electric heating net 706, a heat insulation motor 707 and a spiral discharging paddle 708, the feeding hopper 705 is fixedly installed at one end of the top of the feeding pipe 704, the electric heating net 706 is fixedly installed in the feeding hopper 705, the heat insulation motor 707 is installed in the motor box 701, the spiral discharging paddle 708 is connected with an output shaft of the heat insulation motor 707, and the spiral discharging paddle 708 is located in the heating pipe 702, when the injection assembly 7 is actually used, the raw material is put into the feeding hopper 705, the raw material is primarily melted through the arrangement of the double-layer electric heating net 706, and then enters the heating pipe 702, the raw material is driven by the spiral discharging paddle 708 to push out the raw material out from the heating pipe 702, the mold is fully melted, and then is extruded into the multi-die cavity of the fixed mold 9, and the multi-type automatic rotary-type automatic feeding mold, and the automatic-type discharging mold is realized.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be understood by those skilled in the art that the invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.

Claims (7)

1. An injection molding process of a PP plastic product with good high-temperature performance and high toughness is characterized in that an injection molding device is used, the injection molding device comprises a processing platform (1), a lifting movement control assembly (2), a rotary multi-mold-cavity automatic discharging type movable mold (3), a finished product storage box (4), a support frame (5), a lateral fixing frame (6), a material injection assembly (7), a support rod (8) and a fixed mold (9), the two sides of the bottom of the processing platform (1) are symmetrically provided with the supporting frames (5), the lifting movement control component (2) is fixedly arranged on one side of the top of the processing platform (1), the rotary multi-die-cavity automatic discharging type movable die (3) is arranged at one end of the top of the lifting movement control component (2), the finished product storage box (4) is arranged in the processing platform (1) in a penetrating way, and the finished product storage box (4) is positioned at the bottom of the rotary multi-die-cavity automatic discharging type movable die (3), the material injection component (7) is arranged on one side of the top of the processing platform (1) through the lateral fixing frame (6), the fixed die (9) is arranged at the top of the processing platform (1) through the supporting rod (8), and the fixed mould (9) is communicated with the material injection assembly (7), and the injection molding device comprises the following steps when in use:
1. debugging equipment, namely performing power-on debugging on each piece of equipment to ensure that each piece of equipment can stably work, performing trial machining to ensure that the molten material can be continuously introduced into the material injection assembly (7) and then starting production;
2. melting raw materials, namely fully melting the raw materials after the raw materials are put into the die through the material injection assembly (7), and then conveying the raw materials into a fixed die (9);
3. the method comprises the steps of performing die assembly and material injection, controlling a corresponding die cavity on a rotary multi-die-cavity automatic discharging type movable die (3) to rotate to one side of a fixed die (9) according to a product to be produced, then pushing the rotary multi-die-cavity automatic discharging type movable die (3) to one side of the fixed die (9) through a lifting movement control assembly (2), enabling the rotary multi-die-cavity automatic discharging type movable die (3) to be combined with the fixed die (9), and then injecting a material through an injection assembly (7) to enable a raw material to fill the die cavity;
4. cooling and separating, namely continuously introducing cold water into the rotary multi-cavity automatic discharging type movable mould (3) to fully cool the molten material between the rotary multi-cavity automatic discharging type movable mould (3) and the fixed mould (9), controlling the rotary multi-cavity automatic discharging type movable mould (3) to be separated from the fixed mould (9) through the lifting movement control assembly (2) after the product is fully cooled, and automatically pushing the product out of the mould cavity by the rotary multi-cavity automatic discharging type movable mould (3) when the rotary multi-cavity automatic discharging type movable mould and the fixed mould are separated from each other so that the product falls into a finished product storage box (4) at the bottom to finish one-time production;
5. intelligent production, rotation type multi-cavity automatic discharging formula move mould (3) have six die cavities, and two liang are a set of and adjacent, can continuously produce the same model product according to the follow-up production demand after producing a product, also can multiple model product coproduction, rotation type multi-cavity automatic discharging formula moves mould (3) and includes hexagon rotary die (301), injection molding chamber (302) have been seted up on the lateral wall of hexagon rotary die (301), logical water cooling chamber (303) have been seted up in hexagon rotary die (301), the both ends symmetry of logical water cooling chamber (303) is provided with water receiving mouth (304).
2. The injection molding process of the PP plastic product with good high-temperature performance and high toughness as claimed in claim 1, wherein: the lifting movement control assembly (2) comprises a fixed base (201), a driving motor (202) and a rotating screw rod (203), the fixed base (201) is arranged at the top of the machining platform (1), the driving motor (202) is installed on one side of the top of the fixed base (201), and the rotating screw rod (203) is connected with an output shaft of the driving motor (202).
3. The injection molding process of the PP plastic product with good high-temperature performance and high toughness as claimed in claim 2, wherein: the lifting movement control assembly (2) further comprises a moving support (204), a lateral connecting rod (205) and a rotation control frame (206), the lateral connecting rod (205) is welded at one end of the top of the moving support (204), and the rotation control frame (206) is fixedly installed at one end of the lateral connecting rod (205).
4. The injection molding process of the PP plastic product with good high-temperature performance and high toughness as claimed in claim 3, wherein: the movable support (204) is in threaded connection with the rotary screw (203), the bottom of the movable support (204) is attached to the outer wall of the top of the fixed base (201), a servo motor is embedded in the rotary control frame (206), and an output shaft of the servo motor is connected with a central shaft of the rotary multi-cavity automatic discharging type movable mold (3).
5. The injection molding process of the PP plastic product with good high-temperature performance and high toughness as claimed in claim 1, wherein: the rotary multi-cavity automatic discharging type moving mold (3) further comprises a nitrogen spring (305) and a pushing plate (306), the nitrogen spring (305) is fixedly arranged in the injection molding cavity (302), the pushing plate (306) is connected with one end of the nitrogen spring (305), and the pushing plate (306) is movably arranged in the injection molding cavity (302).
6. The injection molding process of the PP plastic product with good high-temperature performance and high toughness as claimed in claim 1, wherein: annotate material subassembly (7) and include motor case (701), heating pipe (702), discharging pipe (703) and inlet pipe (704), heating pipe (702) fixed mounting be in one side of motor case (701), motor case (701) screw mounting is in on side direction mount (6), the one end of heating pipe (702) is passed through discharging pipe (703) with decide mould (9) and be connected, inlet pipe (704) are worn to establish the top of heating pipe (702), wear to be equipped with the heating wire in heating pipe (702).
7. The injection molding process of the PP plastic product with good high-temperature performance and high toughness as claimed in claim 6, wherein: the feeding assembly (7) further comprises a feeding hopper (705), an electric heating net (706), a heat insulation motor (707) and a spiral discharging paddle (708), the feeding hopper (705) is fixedly arranged at one end of the top of the feeding pipe (704), the electric heating net (706) is fixedly arranged in the feeding hopper (705), the heat insulation motor (707) is installed in the motor box (701), the spiral discharging paddle (708) is connected with an output shaft of the heat insulation motor (707), and the spiral discharging paddle (708) is located in the heating pipe (702).
CN202211408501.4A 2022-11-10 2022-11-10 Injection molding process of PP (polypropylene) plastic product with good high-temperature performance and high toughness Active CN115447061B (en)

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KR101487009B1 (en) * 2013-05-30 2015-01-29 (주) 우성정공 Injection molding product with multi molding system and injection molding method
CN109421205A (en) * 2017-08-21 2019-03-05 惠东县港东塑胶制品有限公司 A kind of more material mixed injection molding machines of cycle type and operating method
CN110091474B (en) * 2019-04-30 2021-01-26 常州宏创车辆部件有限公司 Injection mold for automobile tail lamp
CN110539459A (en) * 2019-10-17 2019-12-06 董倩 high-efficient environment-friendly plastics injection molding machine
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