CN112318810A - Injection molding process for ultrathin and light hair trimmer shell - Google Patents
Injection molding process for ultrathin and light hair trimmer shell Download PDFInfo
- Publication number
- CN112318810A CN112318810A CN202010927532.5A CN202010927532A CN112318810A CN 112318810 A CN112318810 A CN 112318810A CN 202010927532 A CN202010927532 A CN 202010927532A CN 112318810 A CN112318810 A CN 112318810A
- Authority
- CN
- China
- Prior art keywords
- injection molding
- pipe
- hair trimmer
- mold
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- 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
- B29C45/74—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
- B29C45/76—Measuring, controlling or regulating
-
- 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
- B29C45/76—Measuring, controlling or regulating
- B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
-
- 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
- B29C45/76—Measuring, controlling or regulating
- B29C45/78—Measuring, controlling or regulating of temperature
-
- 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
- B29C2045/0096—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor drying the moulding material before injection, e.g. by heating
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76498—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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76531—Temperature
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76551—Time
- B29C2945/76561—Time duration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2055/00—Use of specific polymers obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of main groups B29K2023/00 - B29K2049/00, e.g. having a vinyl group, as moulding material
- B29K2055/02—ABS polymers, i.e. acrylonitrile-butadiene-styrene polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2069/00—Use of PC, i.e. polycarbonates or derivatives thereof, as moulding material
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses an injection molding process of an ultrathin light hair trimmer shell, belonging to the field of injection molding, and the injection molding process of the ultrathin light hair trimmer shell comprises the following steps: s1: preparing a proper amount of plastic particles for injection molding of the shell of the hair trimmer, drying and pretreating the plastic particles at the temperature of 80-90 ℃, wherein the treatment time is 2-2.5 hours, the method can realize that the linkage heating structure is arranged to be a main pipe, an auxiliary pipe and a communicating pipe, the linkage heating structure is utilized to conduct heat at the injection molding machine to the mold, the mold is heated, the trouble of independent heating of the injection molding machine and the mold is reduced, the injection molding cost of the shell of the hair trimmer is reduced, the utilization rate of the heat at the injection molding machine is improved, the linkage heating is stopped by discharging heat-conducting liquid through the liquid discharge valve, the heating temperature of the mold is effectively ensured to be in a proper range, and the liquid injection valve is arranged to accelerate the cooling speed of.
Description
Technical Field
The invention relates to the field of injection molding, in particular to an injection molding process of an ultrathin and light hair trimmer shell.
Background
Injection molding is a method for obtaining a molded product by stirring a completely molten plastic material at a certain temperature by a screw, injecting the completely molten plastic material into a mold cavity at high pressure, and cooling and solidifying the completely molten plastic material.
The temperatures to be controlled during the injection molding process are the barrel temperature, the nozzle temperature, the mold temperature, and the like. The former two temperatures mainly affect the plastification and flow of plastics, the latter temperature mainly affects the flow and cooling of plastics, each plastic has different flow temperatures, the same plastic has different flow temperatures and different decomposition temperatures due to different sources or brands, the plastification process of plastics in different types of injection machines is different, the barrel temperature is also different, and the mold temperature has great influence on the intrinsic performance and apparent quality of products, and the mold temperature is determined by the presence or absence of the crystallinity of plastics, the size and structure of products, performance requirements, and other process conditions (melt temperature, injection speed and injection pressure, molding cycle time, etc.).
However, in the existing life, in the injection molding process flow of the hair trimmer housing, because the injection molding machine and the mold are heated at different temperatures, the charging barrel of the injection molding machine is usually heated by the heater, and then the mold is heated, and two independent heating modes are adopted, so that the injection molding cost of the hair trimmer housing is increased, and the heat at the injection molding machine cannot be utilized, thereby causing waste.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide an injection molding process of an ultrathin and light hair trimmer shell, which can realize that the heat at an injection molding machine is conducted to a mould by a linkage heating structure through arranging a main pipe, an auxiliary pipe and a communicating pipe of the linkage heating structure, the mould is heated, the trouble of independently heating the injection molding machine and the mould is reduced, the injection molding cost of the hair trimmer shell is reduced, the utilization rate of the heat at the injection molding machine is improved, the linkage heating is stopped by discharging heat-conducting liquid through arranging a liquid discharge valve, the heating temperature of the mould is effectively ensured to be in an appropriate range, and in addition, the liquid injection valve is arranged to accelerate the cooling speed of the mould.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
An injection molding process of an ultrathin and light hair trimmer shell comprises the following steps:
s1: preparing a proper amount of plastic particles for injection molding of a hair trimmer shell, and drying and pretreating the plastic particles at 80-90 ℃ for 2-2.5 hours;
s2: the dried plastic particles are put into an injection molding machine through a hopper for plasticizing, the temperature of the injection molding machine is heated to 280 ℃ through a heater, and the plastic particles are converted into plastic melt at high temperature;
s3: the heater is used for heating the mold of the hair trimmer shell in a linkage manner, the linkage heating is stopped when the temperature is heated to 55-70 ℃, and then the plastic melt is injected into the heated mold through a nozzle of an injection molding machine, wherein the injection pressure is 50-100 MPa;
s4: after the mold is filled with the plastic melt, continuously performing injection pressure maintaining, compacting the plastic melt, increasing the density of the plastic, and stopping pressure maintaining operation until the pouring gate is solidified and sealed;
s5: cooling the mold filled with the plastic melt for 30-120 s;
s6: the mould of the hair trimmer shell is demoulded, the formed hair trimmer shell is ejected out through the ejector pins, the hair trimmer shell is obtained, the main pipe, the auxiliary pipe and the communicating pipe of the linkage heating structure are arranged, the linkage heating structure is used for conducting heat of the injection molding machine to the mould, the mould is heated, the trouble of independent heating of the injection molding machine and the mould is reduced, the injection molding cost of the hair trimmer shell is reduced, the heat utilization rate of the injection molding machine is improved, the linkage heating is stopped by arranging the liquid drainage valve to discharge the heat conducting liquid, the heating temperature of the mould is effectively guaranteed to be in a proper range, and the liquid injection valve is arranged to accelerate the cooling speed of the mould.
Furthermore, the plastic particles can be made of one of PC alloy or ABS alloy, PC has excellent heat resistance, weather resistance, dimensional stability and impact resistance, ABS has excellent processing fluidity, and when thin-walled and complex-shaped products are processed, the excellent performance of the ABS can be maintained.
Further, the linkage heating structure in the step S3 includes a main pipe, a sub pipe, and a communicating pipe fixedly connected between the main pipe and the sub pipe, the main pipe is disposed between the injection molding machine and the heater, the main pipe is uniformly wound at the outer end of the injection molding machine, the auxiliary pipe is uniformly wound at the outer end of the mold, one end of the auxiliary pipe, which is far away from the communicating pipe, is provided with a liquid discharge valve, the main pipe, the auxiliary pipe and the communicating pipe are used for containing heat-conducting liquid, when the main pipe, the auxiliary pipe and the communicating pipe are not used for containing heat-conducting liquid, because the communicating pipe is long enough, the heat generated by the heater in the heating process of the injection molding machine is not easy to be conducted to the mold through the solid structures of the main pipe, the auxiliary pipe and the communicating pipe, the linkage heating process is conveniently stopped by discharging heat-conducting liquid, so as to prevent the heating temperature of the mould from exceeding the range and influencing the injection molding of the hair trimmer shell, wherein the drainage valve is opened to discharge the heat-conducting liquid to stop the linkage heating.
Further, heat conduction liquid is filled in the main pipe, the auxiliary pipe and the communicating pipe, the heat conduction liquid is filled from the main pipe and enters the auxiliary pipe through the communicating pipe, the heat conduction liquid comprises but is not limited to tap water or heat conduction oil, the filling process of the heat conduction liquid is carried out before the injection molding machine is heated by the heater in the step S, the heat conduction liquid is heated by the heater while the injection molding machine is heated, the heat at the heater is guided to the auxiliary pipe through the heat conduction liquid, the die is heated, the trouble of independently heating the die again is greatly reduced, the injection molding cost of the shell of the hair trimmer is reduced, and the injection molding efficiency is improved.
Furthermore, the outer end parcel of bleeder valve has thermal-insulated rubber sleeve, makes to open the bleeder valve and suspend the linkage heating in-process, and the difficult high temperature liquid that flows through in the auxiliary pipe of hand of effective protection user scalds, the outer end of thermal-insulated rubber sleeve is equipped with the dull polish layer, increases the friction between hand and the bleeder valve, makes the switching operation of bleeder valve more laborsaving.
Further, the outer end parcel of auxiliary pipe has the temperature sensing silicone rubber cover that discolours, the temperature sensing silicone rubber cover that discolours is located the one side that is close to the bleeder valve, through the condition of discolouing of temperature sensing silicone rubber cover, roughly knows the liquid temperature of flowing through the auxiliary pipe, effectively reminds the user to pay close attention to carefully not scalded when using the bleeder valve.
Further, the outer end parcel of being responsible for has the heat conduction interlayer, can completely cut off and be responsible for and the heater, makes the difficult easy heater scraping wearing and tearing that are responsible for in the surface, is difficult for influencing the heating of heater to being responsible for again, the outer end of auxiliary pipe and communicating pipe has all wrapped up the heat preservation, delays the temperature falling rate of the heat-conducting liquid in auxiliary pipe and the communicating pipe, makes the heat of the heat-conducting liquid in the auxiliary pipe difficult loss, effectively guarantees the rate of heating to the mould, improves the thermal utilization ratio of injection molding machine department.
Further, communicating pipe sets up to U font structure, install on communicating pipe and annotate the liquid valve, annotate the liquid valve and be located the straight tube that is close to vice pipe one side, after the heat conduction liquid of discharge, user's accessible annotates the liquid valve and annotates cooling liquid into in the vice pipe, cools down to the mould, improves mould cooling rate, gets into the shaping efficiency that improves the hair trimmer casing.
Further, in the step S4, when the injection and pressure maintaining operation is performed, the mold is locked by a proper mold locking force, and in the pressure maintaining process, the mold is filled with the plastic melt, the plastic melt gradually solidified at this time is used as a medium for transmitting pressure, and the pressure is transmitted to the surface of the mold wall, so that the mold tends to be opened, and the mold can help exhaust air by being opened, but the opening is excessive, so that burrs and flashes of a molded product can be caused, and the mold locking can effectively prevent the excessive phenomenon of mold expansion and can also effectively maintain the pressure.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) this scheme is responsible for through setting up linkage heating structure, auxiliary line and communicating pipe, utilize linkage heating structure to conduct the heat of injection molding machine department to mould department, to the mould heating, reduce the trouble of injection molding machine and the independent heating of mould, reduce the cost of moulding plastics of hair trimmer casing, improve the thermal utilization ratio of injection molding machine department, and suspend the linkage heating through setting up the drain valve discharge heat conduction liquid, effectively guarantee that mould heating temperature is in suitable within range, still set up in addition and annotate the liquid valve and accelerate mould cooling speed.
(2) The plastic particles can be made of one of PC alloy or ABS alloy, PC has excellent heat resistance, weather resistance, dimensional stability and impact resistance, ABS has excellent processing fluidity, and when products with thin walls and complex shapes are processed, the excellent performance of the products can be maintained.
(3) The linkage heating structure in the step S3 comprises a main pipe, an auxiliary pipe and a communicating pipe fixedly connected between the main pipe and the auxiliary pipe, wherein the main pipe is arranged between the injection molding machine and the heater, the main pipe is uniformly wound at the outer end of the injection molding machine, the auxiliary pipe is uniformly wound at the outer end of the mold, one end of the auxiliary pipe, which is far away from the communicating pipe, is provided with a liquid discharge valve, the main pipe, the auxiliary pipe and the communicating pipe are used for containing heat-conducting liquid, when the main pipe, the auxiliary pipe and the communicating pipe are not used for containing heat-conducting liquid, because the communicating pipe is long enough, the heat generated by the heater in the heating process of the injection molding machine is not easy to be conducted to the mold through the solid structures of the main pipe, the auxiliary pipe and the communicating pipe, the linkage heating process is conveniently stopped by discharging heat-conducting liquid, so as to prevent the heating temperature of the mould from exceeding the range and influencing the injection molding of the hair trimmer shell, wherein the drainage valve is opened to discharge the heat-conducting liquid to stop the linkage heating.
(4) The person in charge, all pack in auxiliary pipe and the communicating pipe has heat conduction liquid, heat conduction liquid is from being responsible for and filling, get into the auxiliary pipe through communicating pipe in, heat conduction liquid includes but not limited to one kind in running water or the conduction oil, heat conduction liquid' S filling process goes on before the injection molding machine heating through the heater in S step, heat conduction liquid heating when utilizing the heater to the injection molding machine heating, and lead to auxiliary pipe department through the heat of heat conduction liquid with heater department, heat the mould, the independent trouble of heating the mould once more that significantly reduces, reduce the cost that the hair trimmer casing was moulded plastics, the efficiency of moulding plastics is improved.
(5) The outer end parcel of bleeder valve has thermal-insulated rubber sleeve, makes to open the bleeder valve and suspend the linkage heating in-process, and the difficult high temperature liquid that flows through in the auxiliary pipe of protection user's hand is scalded effectively, and the outer end of thermal-insulated rubber sleeve is equipped with the dull polish layer, increases the friction between hand and the bleeder valve, makes the switching operation of bleeder valve more laborsaving.
(6) The outer end parcel of accessory pipe has the temperature sensing silicone rubber cover that discolours, and the temperature sensing silicone rubber cover that discolours is located the one side that is close to the bleeder valve, through the condition of discolouing of temperature sensing silicone rubber cover, roughly knows the liquid temperature of flowing through the accessory pipe, effectively reminds the user to pay close attention to carefully not scalded when using the bleeder valve.
(7) The outer end parcel of being responsible for has the heat conduction interlayer, can completely cut off and be responsible for and the heater, makes the difficult easy heater scraping wearing and tearing that are responsible for in the surface, is difficult for influencing the heater again to the heating of being responsible for, and the outer end of auxiliary pipe and communicating pipe has all wrapped up the heat preservation, delays the temperature falling rate of the heat conduction liquid in auxiliary pipe and the communicating pipe, makes the heat of the heat conduction liquid in the auxiliary pipe difficult loss, effectively guarantees the rate of heating to the mould, improves the thermal utilization ratio of injection molding machine department.
(8) Communicating pipe sets up to U font structure, installs on communicating pipe and annotates the liquid valve, annotates the liquid valve and is located the straight tube that is close to vice pipe one side, and after the heat conduction liquid of discharge, user's accessible annotates the liquid valve and pours into cooling liquid into to the vice intraductal, cools down to the mould, improves mould cooling rate, gets into the shaping efficiency that improves the hair trimmer casing.
(9) In the step S4, a proper mold locking force is required to lock the mold during the injection and pressure maintaining operation, and during the pressure maintaining process, the mold is filled with the plastic melt, and the plastic melt gradually solidified at this time is used as a medium for transferring pressure, and the pressure is transferred to the surface of the mold wall, so that the mold tends to be opened, and the mold can be opened to help exhaust, but the mold is excessively opened to cause burrs and flash of the molded product, thereby the mold locking can effectively prevent the excessive phenomenon of mold expansion and effectively maintain the pressure.
Drawings
FIG. 1 is a principal flow diagram of the present invention;
FIG. 2 is a perspective view of the construction of the hair trimmer housing of the present invention;
FIG. 3 is a schematic view of the structure of the injection molding machine of the present invention;
FIG. 4 is a schematic view of the structure at A in FIG. 3;
FIG. 5 is a schematic view of the structure at B in FIG. 3;
fig. 6 is a schematic structural diagram at C in fig. 3.
The reference numbers in the figures illustrate:
1 main pipe, 2 auxiliary pipes, 3 communicating pipes, 4 liquid discharge valves, 5 heat conduction interlayers, 6 heat preservation layers and 7 liquid injection valves.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1-3, an injection molding process for an ultra-thin and lightweight hair trimmer housing includes the following steps:
s1: preparing a proper amount of plastic particles for injection molding of the hair trimmer shell, and drying and pretreating the plastic particles at 80 ℃ for 2 hours;
s2: putting the dried plastic particles into an injection molding machine through a hopper for plasticizing, heating the temperature of the injection molding machine to 230 ℃ through a heater, and converting the plastic particles into plastic melt at high temperature;
s3: the mold of the hair trimmer shell is heated in a linkage manner by a heater, the linkage heating is stopped when the temperature is heated to 55-70 ℃, and then the plastic melt is injected into the heated mold through a nozzle of an injection molding machine, wherein the injection pressure is 80 MPa;
s4: after the mold is filled with the plastic melt, continuously performing injection pressure maintaining, compacting the plastic melt, increasing the density of the plastic, and stopping pressure maintaining operation until the pouring gate is solidified and sealed;
s5: cooling the mold filled with the plastic melt for 75 s;
s6: and demolding the mold of the hair trimmer shell, and ejecting the molded hair trimmer shell through an ejector pin to obtain the hair trimmer shell.
Example 2:
referring to fig. 1-3, an injection molding process for an ultra-thin and lightweight hair trimmer housing includes the following steps:
s1: preparing a proper amount of plastic particles for injection molding of the hair trimmer shell, and drying and pretreating the plastic particles at 85 ℃ for 2 hours;
s2: putting the dried plastic particles into an injection molding machine through a hopper for plasticizing, heating the temperature of the injection molding machine to 270 ℃ through a heater, and converting the plastic particles into plastic melt at high temperature;
s3: the mold of the hair trimmer shell is heated in a linkage manner by a heater, the linkage heating is stopped when the temperature is heated to 55-70 ℃, and then the plastic melt is injected into the heated mold through a nozzle of an injection molding machine, wherein the injection pressure is 85 MPa;
s4: after the mold is filled with the plastic melt, continuously performing injection pressure maintaining, compacting the plastic melt, increasing the density of the plastic, and stopping pressure maintaining operation until the pouring gate is solidified and sealed;
s5: cooling the mold filled with the plastic melt for 100 s;
s6: and demolding the mold of the hair trimmer shell, and ejecting the molded hair trimmer shell through an ejector pin to obtain the hair trimmer shell.
Example 3:
referring to fig. 1-3, an injection molding process for an ultra-thin and lightweight hair trimmer housing includes the following steps:
s1: preparing a proper amount of plastic particles for injection molding of the hair trimmer shell, and drying and pretreating the plastic particles at 90 ℃ for 2.5 hours;
s2: putting the dried plastic particles into an injection molding machine through a hopper for plasticizing, heating the temperature of the injection molding machine to 250 ℃ through a heater, and converting the plastic particles into plastic melt at high temperature;
s3: the mould of the hair trimmer shell is heated in a linkage manner by a heater, the linkage heating is stopped when the temperature is heated to 65 ℃, and then the plastic melt is injected into the heated mould through a nozzle of an injection molding machine, wherein the injection pressure is 65 MPa;
s4: after the mold is filled with the plastic melt, continuously performing injection pressure maintaining, compacting the plastic melt, increasing the density of the plastic, and stopping pressure maintaining operation until the pouring gate is solidified and sealed;
s5: cooling the mold filled with the plastic melt for 110 s;
s6: and demolding the mold of the hair trimmer shell, and ejecting the molded hair trimmer shell through an ejector pin to obtain the hair trimmer shell.
The material of the plastic particles can adopt one of PC alloy or ABS alloy, PC has excellent heat resistance and weather resistance, size stability and impact resistance, ABS has excellent processing fluidity, when a thin-wall product with a complex shape is processed, the excellent performance can be kept, in the step S4, proper mold locking force is needed to mold the mold when injection pressure maintaining operation is carried out, in the pressure maintaining process, the mold is filled with plastic melt, the gradually solidified plastic melt is taken as a medium for transferring pressure, the pressure is transferred to the surface of the mold wall, the mold tends to be propped open, the mold can help exhaust air when being propped open, but the excessive propping can cause burrs and flash of a formed product, so that the mold locking can effectively prevent the excessive phenomenon of mold expansion and can also effectively carry out pressure maintaining.
The linkage heating structure in the step S3 comprises a main pipe 1, an auxiliary pipe 2 and a communicating pipe 3 fixedly connected between the main pipe 1 and the auxiliary pipe 2, wherein the main pipe 1 is arranged between the injection molding machine and the heater, the main pipe 1 is uniformly wound at the outer end of the injection molding machine, and the auxiliary pipe 2 is uniformly wound at the outer end of the mold.
Referring to fig. 4, a liquid discharge valve 4 is installed at one end of the secondary pipe 2 away from the communicating pipe 3, the primary pipe 1, the secondary pipe 2 and the communicating pipe 3 are used for containing heat conducting liquid, when the primary pipe 1, the secondary pipe 2 and the communicating pipe 3 are not filled with heat conducting liquid, because the communicating pipe 3 is long enough, heat generated by a heater in the heating process of the injection molding machine is not easily conducted to a mold through the solid structures of the primary pipe 1, the secondary pipe 2 and the communicating pipe 3, so that the linkage heating process is stopped by discharging the heat conducting liquid, the injection molding of the shell of the hair trimmer is not affected by the temperature exceeding the range of the mold heating, wherein the liquid discharge valve 4 is opened to discharge the heat conducting liquid to stop linkage heating, the primary pipe 1, the secondary pipe 2 and the communicating pipe 3 are filled with heat conducting liquid, the heat conducting liquid is filled from the primary pipe 1 and enters the secondary pipe 2 through the communicating pipe 3, the filling process of the heat conduction liquid is carried out before the injection molding machine is heated by the heater in the step S2, the heat conduction liquid is heated by the heater while the injection molding machine is heated, the heat at the heater is guided to the auxiliary pipe 2 through the heat conduction liquid, the die is heated, the trouble of independently heating the die again is greatly reduced, the injection molding cost of the shell of the hair trimmer is reduced, and the injection molding efficiency is improved.
The outer end parcel of bleeder valve 4 has thermal-insulated rubber sleeve, make and open bleeder valve 4 and suspend the linkage heating in-process, the high temperature liquid that effectively protects user's hand to be difficult for being flowed through in the auxiliary pipe 2 is scalded, the outer end of thermal-insulated rubber sleeve is equipped with the dull polish layer, increase the friction between hand and the bleeder valve 4, make the switching operation of bleeder valve 4 more laborsaving, the outer end parcel of auxiliary pipe 2 has the temperature sensing color-changing silica gel cover, the temperature sensing color-changing silica gel cover is located the one side that is close to bleeder valve 4, the condition of discolouing through the temperature sensing color-changing silica gel cover, the liquid temperature of auxiliary pipe 2 of roughly knowing to flow through, effectively remind the user to pay close attention to carefully when using bleeder valve 4.
Referring to fig. 5, the outer end of the main pipe 1 is wrapped with the heat conduction interlayer 5, which can isolate the main pipe 1 from the heater, so that the surface of the main pipe 1 is not easily scratched and abraded by the heater, and the heating of the main pipe 1 by the heater is not easily affected, the outer ends of the secondary pipe 2 and the communicating pipe 3 are wrapped with the heat insulation layers 6, so that the temperature drop speed of the heat conduction liquid in the secondary pipe 2 and the communicating pipe 3 is delayed, the heat of the heat conduction liquid in the secondary pipe 2 is not easily lost, the heating speed of the mold is effectively guaranteed, and the utilization rate of the heat at the injection molding machine is improved.
Referring to fig. 6, the communication pipe 3 is a U-shaped structure, the liquid injection valve 7 is installed on the communication pipe 3, the liquid injection valve 7 is located on the straight pipe close to one side of the secondary pipe 2, and after the heat-conducting liquid is discharged, a user can inject cooling liquid into the secondary pipe 2 through the liquid injection valve 7 to cool the mold, so that the cooling speed of the mold is increased, and the molding efficiency of the shell of the hair trimmer is improved.
This scheme is responsible for 1 through setting up linkage heating structure, auxiliary pipe 2 and communicating pipe 3, to being responsible for 1, auxiliary pipe 2 and communicating pipe 3 inside injection heat conduction liquid, when at the heater to injection molding machine heating in-process, utilize linkage heating structure to conduct the heat of injection molding machine department to mould department, to the mould heating, reduce the trouble that injection molding machine and mould heated alone, reduce the cost of moulding plastics of hair trimmer casing, improve the thermal utilization ratio of injection molding machine department, and suspend linkage heating through setting up 4 discharge heat conduction liquids of bleeder valve, effectively guarantee that mould heating temperature is at suitable within range, still set up in addition and annotate liquid valve 7 and accelerate mould cooling speed.
The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.
Claims (10)
1. An injection molding process for an ultrathin light hair trimmer shell is characterized in that: the method comprises the following steps:
s1: preparing a proper amount of plastic particles for injection molding of a hair trimmer shell, and drying and pretreating the plastic particles at 80-90 ℃ for 2-2.5 hours;
s2: the dried plastic particles are put into an injection molding machine through a hopper for plasticizing, the temperature of the injection molding machine is heated to 280 ℃ through a heater, and the plastic particles are converted into plastic melt at high temperature;
s3: the heater is used for heating the mold of the hair trimmer shell in a linkage manner, the linkage heating is stopped when the temperature is heated to 55-70 ℃, and then the plastic melt is injected into the heated mold through a nozzle of an injection molding machine, wherein the injection pressure is 50-100 MPa;
s4: after the mold is filled with the plastic melt, continuously performing injection pressure maintaining, compacting the plastic melt, increasing the density of the plastic, and stopping pressure maintaining operation until the pouring gate is solidified and sealed;
s5: cooling the mold filled with the plastic melt for 30-120 s;
s6: and demolding the mold of the hair trimmer shell, and ejecting the molded hair trimmer shell through an ejector pin to obtain the hair trimmer shell.
2. The injection molding process of an ultra-thin lightweight hair trimmer housing according to claim 1, wherein: the plastic particles can be made of one of PC alloy or ABS alloy.
3. The injection molding process of an ultra-thin lightweight hair trimmer housing according to claim 1, wherein: linkage heating' S structure is including being responsible for (1), accessory pipe (2) and fixed connection communicating pipe (3) between being responsible for (1) and accessory pipe (2) in the S3 step, be responsible for (1) and set up between injection molding machine and heater, and be responsible for (1) even winding in the outer end of injection molding machine, the outer end at the mould is evenly wound in accessory pipe (2), drain valve (4) are installed to the one end that communicating pipe (3) were kept away from in accessory pipe (2).
4. The injection molding process of an ultra-thin lightweight hair trimmer housing according to claim 3, wherein: the heat conduction liquid is filled in the main pipe (1), the auxiliary pipe (2) and the communicating pipe (3), the heat conduction liquid is filled from the main pipe (1) and enters the auxiliary pipe (2) through the communicating pipe (3), and the heat conduction liquid comprises but is not limited to tap water or heat conduction oil.
5. The injection molding process of an ultra-thin lightweight hair trimmer housing according to claim 4, wherein: the filling process of the heat conductive liquid is performed before the injection molding machine is heated by the heater in step S2.
6. The injection molding process of an ultra-thin lightweight hair trimmer housing according to claim 3, wherein: the outer end of the liquid discharge valve (4) is wrapped with a heat insulation rubber sleeve, and the outer end of the heat insulation rubber sleeve is provided with a frosting layer.
7. The injection molding process of an ultra-thin lightweight hair trimmer housing according to claim 3, wherein: the outer end of the auxiliary pipe (2) is wrapped with a temperature-sensing color-changing silica gel sleeve, and the temperature-sensing color-changing silica gel sleeve is positioned on one side close to the liquid discharge valve (4).
8. The injection molding process of an ultra-thin lightweight hair trimmer housing according to claim 3, wherein: the outer end of the main pipe (1) is wrapped with a heat conduction interlayer (5), and the outer ends of the auxiliary pipe (2) and the communicating pipe (3) are wrapped with heat preservation layers (6).
9. The injection molding process of an ultra-thin lightweight hair trimmer housing according to claim 3, wherein: the communicating pipe (3) is of a U-shaped structure, a liquid injection valve (7) is mounted on the communicating pipe (3), and the liquid injection valve (7) is located on a straight pipe close to one side of the auxiliary pipe (2).
10. The injection molding process of an ultra-thin lightweight hair trimmer housing according to claim 1, wherein: in the step S4, the mold is clamped by an appropriate clamping force during the injection pressure maintaining operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010927532.5A CN112318810A (en) | 2020-09-07 | 2020-09-07 | Injection molding process for ultrathin and light hair trimmer shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010927532.5A CN112318810A (en) | 2020-09-07 | 2020-09-07 | Injection molding process for ultrathin and light hair trimmer shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112318810A true CN112318810A (en) | 2021-02-05 |
Family
ID=74303665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010927532.5A Pending CN112318810A (en) | 2020-09-07 | 2020-09-07 | Injection molding process for ultrathin and light hair trimmer shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112318810A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113561437A (en) * | 2021-07-07 | 2021-10-29 | 优链新材料科技（上海）有限公司 | Novel low-temperature heating device for screw of injection molding machine |
| CN114919123A (en) * | 2022-03-09 | 2022-08-19 | 上海珂明注塑***科技有限公司 | Novel injection molding device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200940966Y (en) * | 2006-06-27 | 2007-08-29 | 吴焕雄 | Afterheat collector of injection moulding machine |
| CN106273206A (en) * | 2016-08-18 | 2017-01-04 | 天津华夏联盛汽车部件有限公司 | A kind of front bumper face shield injection molding technique |
| CN108454044A (en) * | 2017-02-22 | 2018-08-28 | 广东合即得能源科技有限公司 | The packaged type injection molding machine of cogeneration |
| CN110774517A (en) * | 2019-11-04 | 2020-02-11 | 苏州市吴中区永泰塑业有限责任公司 | Method for forming injection molding part shell of washing machine |
| CN111196018A (en) * | 2018-11-20 | 2020-05-26 | 泰瑞机器股份有限公司 | Thermal cycle energy-saving injection molding machine |
-
2020
- 2020-09-07 CN CN202010927532.5A patent/CN112318810A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200940966Y (en) * | 2006-06-27 | 2007-08-29 | 吴焕雄 | Afterheat collector of injection moulding machine |
| CN106273206A (en) * | 2016-08-18 | 2017-01-04 | 天津华夏联盛汽车部件有限公司 | A kind of front bumper face shield injection molding technique |
| CN108454044A (en) * | 2017-02-22 | 2018-08-28 | 广东合即得能源科技有限公司 | The packaged type injection molding machine of cogeneration |
| CN111196018A (en) * | 2018-11-20 | 2020-05-26 | 泰瑞机器股份有限公司 | Thermal cycle energy-saving injection molding machine |
| CN110774517A (en) * | 2019-11-04 | 2020-02-11 | 苏州市吴中区永泰塑业有限责任公司 | Method for forming injection molding part shell of washing machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113561437A (en) * | 2021-07-07 | 2021-10-29 | 优链新材料科技（上海）有限公司 | Novel low-temperature heating device for screw of injection molding machine |
| CN114919123A (en) * | 2022-03-09 | 2022-08-19 | 上海珂明注塑***科技有限公司 | Novel injection molding device |
| CN114919123B (en) * | 2022-03-09 | 2023-11-03 | 上海珂明注塑***科技有限公司 | Injection molding device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211389926U (en) | Multifunctional injection mold | |
| CN217777626U (en) | Injection mold capable of realizing rapid demolding | |
| CN112318810A (en) | Injection molding process for ultrathin and light hair trimmer shell | |
| CN216465888U (en) | Production mold for plastic dust cover for automobile | |
| CN112622213A (en) | Quick cooling system is used in injection moulding product production | |
| CN210851208U (en) | Quick refrigerated loudspeaker lower cover injection mold | |
| CN212312613U (en) | Extraction structure mould convenient for product forming | |
| CN211307288U (en) | Injection mold with heating device for automobile instrument panel | |
| CN210733235U (en) | Blow molding machine with quick feeding function | |
| CN207256797U (en) | Injection molding machine extrusion mechanism is used in a kind of stationery processing | |
| CN214820658U (en) | Heating device for injection mold | |
| CN215791568U (en) | Rotary injection molding metal mold | |
| CN217916617U (en) | Quick fashioned liquid silica gel rubber coating mould | |
| CN215320318U (en) | Novel hot nozzle | |
| CN213972404U (en) | Ultra-thin panel injection molding glue feeding device | |
| CN219618368U (en) | Lens injection mold with advancing device | |
| CN213440813U (en) | Injection molding mouth feeding device of injection molding machine | |
| CN215969848U (en) | Multi-runner anti-blocking type plastic ornament mold | |
| CN211251241U (en) | Novel high-efficient type injection mold | |
| CN213618184U (en) | Injection molding mechanism of injection molding machine | |
| CN212021588U (en) | Injection molding head of injection molding machine | |
| CN216100179U (en) | Injection mold for producing medical instrument parts | |
| CN214353901U (en) | Hot runner protection control system | |
| CN218985587U (en) | Zinc alloy mold hot runner | |
| CN212860228U (en) | Precision injection mold for ultra-thin narrow edge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210205 |