CN110126177A - A kind of moulding process for the cell phone rear cover embryo material including center adjusting active type chamber by spring - Google Patents
A kind of moulding process for the cell phone rear cover embryo material including center adjusting active type chamber by spring Download PDFInfo
- Publication number
- CN110126177A CN110126177A CN201910475408.7A CN201910475408A CN110126177A CN 110126177 A CN110126177 A CN 110126177A CN 201910475408 A CN201910475408 A CN 201910475408A CN 110126177 A CN110126177 A CN 110126177A
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- Prior art keywords
- type chamber
- active type
- mobile
- spring
- rear cover
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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
- B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
- B29C45/0055—Shaping
-
- 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
-
- 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
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
-
- 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
- B29C45/36—Moulds having means for locating or centering cores
-
- 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
- B29C45/80—Measuring, controlling or regulating of relative position of mould parts
-
- 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
- B29C2045/2697—Deformed geometry of the cavity
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Materials For Medical Uses (AREA)
Abstract
The present invention provides a kind of moulding process of cell phone rear cover embryo material including center that active type chamber is adjusted by spring, it is characterized by: stent mold core and mold insert are combined into the cold burden cavity, four forming surfaces around mobile mould mold core combine with mold insert between maximum distance be T3, the maximum distance between four forming surfaces around four forming surfaces of stent mold core and adjacent mobile mould mold core is T4；Mobile the distance between mould mold core and stent mold core are T5, T4=T3 >=T5；The moulding process of the cell phone rear cover embryo material including center by spring adjusting active type chamber of the invention is due to being equipped with active type chamber, the size of active type chamber can be adjusted according to the demand of product, volume before making active type chamber stop compression is greater than the volume of product, liquid material flowing is easy flowing in the active type chamber of large volume, product is easy molding, and product internal stress is good, appearance is beautiful, thickness is uniform, composite material is not easy to be separated from each other.
Description
Technical field
The present invention relates to a kind of moulding process more particularly to a kind of hands including center that active type chamber is adjusted by spring
The moulding process of machine rear cover embryo material.
Background technique
Existing injection molding plastic working method is after plastics are plasticized in injection molding machine heating cylinder, from plunger or toward
Multiple screw of injection forms the plastic working method of product into the die cavity of Guan Bi mould, this method is capable of processing complex contour, size essence
The true or product with inserts, high production efficiency.Most of thermoplastics and certain thermosetting plasticses (such as phenoplasts)
It is processed with this method.
But the material in existing injection moulding for injection molding must have good fluidity, could be full of die cavity to be made
Product；
Bad for the mobility material for injection molding, using existing injection molding plastic working method, at
Cause flow resistance big since material fluidity is bad during type, it is not easy to form, in order to realize that formed product must add
Big injection pressure and raising injection speed, increasing injection pressure and improving injection speed will lead to the internal stress of institute's shaped article
Greatly, appearance is bad, in uneven thickness, composite material is easily separated, to make that product quality is very poor, yield is low.
During forming thin-walled products, even if using having the material of good fluidity injection molding to cause since type chamber is less than normal
Liquid material flow resistance is big, it is not easy to it forms, in order to realize that formed product must increase injection pressure and raising injection speed,
The internal stress that increasing injection pressure and raising injection speed will lead to institute's shaped article is big, and appearance is bad, in uneven thickness, compound
Material is easily separated, to make that product quality is very poor, yield is low.
Summary of the invention
Based on the deficiencies of the prior art, active type chamber is adjusted by spring it is an object of the present invention to a kind of
The moulding process of cell phone rear cover embryo material including center, the temperature of adjustable mold corresponding product corresponding position；Due to movement
Mould mold core and stent mold core are all provided with there are five forming surface, and four forming surfaces around mobile mould mold core combine it with mold insert
Between maximum distance >=movement mould mold core and the stent mold core between minimum range, make cell phone rear cover and mobile phone center
Integral type, excessively naturally, reducing cost, and center integral type cell phone rear cover embryo material appearance is more beautiful than non-Unitary；Due to
Equipped with cold burden cavity, cooling liquid material is easy to flow to cold burden cavity；Due to being equipped with active type chamber, active type chamber is made to stop compression
Preceding volume is greater than the volume of product, the intracavitary liquid material of the active type of shaping mobile phone rear cover and its center other than cold burden cavity
Uniformly, cell phone rear cover and its center are easy molding under low speed or low pressure, and product internal stress is good, appearance is beautiful, thick for flowing
Degree is uniform, composite material is not easy to be separated from each other.
To achieve the goals above, the present invention provides a kind of mobile phones including center that active type chamber is adjusted by spring
The moulding process of rear cover embryo material, which is characterized in that its forming process includes the following steps:
The first step is melted material for liquid by solid-state.
Second step adjusts the temperature of mold corresponding product corresponding position, reaches the cell phone rear cover embryo material of center most preferably at profile bar
Part, the temperature of forming surface is lower than the temperature in mobile mould mold core intermediary form face around mobile mould mold core, around stent mold core at
The temperature in type face is lower than the temperature in stent mold core intermediary form face, and the temperature of mold insert combination is lower than mobile mould mold core intermediary form
The temperature in face or temperature lower than stent mold core intermediary form face.
Third step is combined by moving bearing device, mold insert and spring or spring assembly form second of mobile mechanism, mobile
Mould is mobile to stent direction, starts to mold.
4th step, when second of mobile mechanism touches stent, by with mobile mould, stent, second of moving machine
Structure forms active type chamber and forms active type chamber A, and stent mold core and mold insert are combined into the cold burden cavity F, and active type chamber holds at this time
Product is maximum, while second of mobile mechanism is L0 relative to the mobile moveable maximum distance of mould, around mobile mould mold core
Four forming surfaces combined with mold insert between maximum distance be T3, four forming surfaces of stent mold core and adjacent mobile mould mould
The maximum distance between four forming surfaces around core is T4.
Mobile mould described in 5th step continues mobile to the stent direction, until the mobile mould and second of moving machine
Structure fitting, reaches complete molding state, forms active type chamber D at this time, active type chamber D volume is minimum, at this time second of moving machine
Structure is L1, L1=0 relative to the distance of the mobile mould, while the compression parameters of the mobile mould are arranged.
Compression parameters of 5th step according to the mobile mould of above-mentioned setting control the mobile mould to institute by sensor
The mobile distance of second of mobile mechanism's opposite direction is stated, the volume for adjusting active type chamber forms active type chamber B, makes active type chamber
B is in running order, and second of mobile mechanism is L2, second of mobile mechanism relative to the distance of the mobile mould at this time
Continue to be bonded with the stent under the action of spring or the spring assembly and keeps the closing of active type chamber.
Liquid material is injected the active type chamber C by the 6th step, and second of mobile mechanism is relative to the mobile mould at this time
Distance be L3, move the distance between mould mold core and stent mold core at this time as T5, T4=T3 >=T5.
Mobile mould described in 7th step is mobile, and active type chamber volume to product requirement volume, forms active type chamber from large to small
E, second of mobile mechanism is L4, L0 > L2 > L3 > L4 >=L1 relative to the distance of the mobile mould at this time.
The cooling and solidifying molding of 8th step product, the mobile mould is mobile to the direction opposite with the stent, opens and lives
Ejector half chamber, spring or spring assembly flick second of mobile mechanism and the mobile mould, second of moving machine
Structure is mobile to the stent direction relative to the mobile mould, and product 4 takes out from the mobile mould.
Liquid material is injected active type chamber described in the active type chamber C and the 7th step and worked the two steps by the 6th step
Sequencing is to start the movement of the 7th step, i.e., the described activity during liquid material is injected the active type chamber C by the 6th step
Type chamber is started to work, and active type chamber volume to product requirement volume, forms active type chamber E from large to small, the active type chamber A's
Volume > active type chamber B volume > active type chamber C volume > active type chamber E volume >=active type
The volume of chamber D.
Changing for the moulding process of the cell phone rear cover embryo material including center of active type chamber is adjusted by spring as the present invention
Into the present invention adjusts the liquid material of the moulding process of the cell phone rear cover embryo material including center of active type chamber by spring
It is heavy viscous material or the composite material being easily separated from each other.
Changing for the moulding process of the cell phone rear cover embryo material including center of active type chamber is adjusted by spring as the present invention
Into what the present invention adjusted the moulding process of the cell phone rear cover embryo material including center of active type chamber by spring further includes guiding group
Part, the mobile mould further include second of mobile mechanism and position-limit mechanism.
Changing for the moulding process of the cell phone rear cover embryo material including center of active type chamber is adjusted by spring as the present invention
Into the present invention adjusts the liquid material of the moulding process of the cell phone rear cover embryo material including center of active type chamber by spring
It is low viscosity material or is not easy the composite material being separated from each other.
Changing for the moulding process of the cell phone rear cover embryo material including center of active type chamber is adjusted by spring as the present invention
Adjusted into, the present invention by spring the moulding process of the cell phone rear cover embryo material including center of active type chamber pretreatment or
Material is transported to thawing apparatus.
Changing for the moulding process of the cell phone rear cover embryo material including center of active type chamber is adjusted by spring as the present invention
Into the 5th step that the present invention adjusts the moulding process of the cell phone rear cover embryo material including center of active type chamber by spring will
It is in the lower injection rate or lower injection pressure relative to conventional molding process that liquid material, which injects the active type chamber,
It is completed under conditions of power.
Changing for the moulding process of the cell phone rear cover embryo material including center of active type chamber is adjusted by spring as the present invention
Into the present invention adjusts the active type chamber of the moulding process of the cell phone rear cover embryo material including center of active type chamber by spring
It is one or more.
Changing for the moulding process of the cell phone rear cover embryo material including center of active type chamber is adjusted by spring as the present invention
Into the present invention adjusts the active type chamber of the moulding process of the cell phone rear cover embryo material including center of active type chamber by spring
It is two or two or more be symmetrically arranged.
Compared with prior art, the present invention adjusts the cell phone rear cover embryo material including center of active type chamber by spring
Moulding process has the advantages that the temperature of adjustable mold corresponding product corresponding position；Due to mobile mould mold core and
Stent mold core is all provided with there are five forming surface, and four forming surfaces around mobile mould mold core combined with mold insert between maximum
The minimum range of distance >=between mobile mould mold core and the stent mold core, makes cell phone rear cover and mobile phone center integral type,
Excessively naturally, reducing cost, and center integral type cell phone rear cover embryo material appearance is more beautiful than non-Unitary；Due to being equipped with cold burden
Chamber, cooling liquid material are easy to flow to cold burden cavity；The temperature of adjustable mold corresponding product corresponding position；Due to movement
Mould mold core and stent mold core are all provided with there are five forming surface, and four forming surfaces around mobile mould mold core combine it with mold insert
Between maximum distance >=movement mould mold core and the stent mold core between minimum range, make cell phone rear cover and mobile phone center
Integral type, excessively naturally, reducing cost, and center integral type cell phone rear cover embryo material appearance is more beautiful than non-Unitary；Due to
Equipped with cold burden cavity, cooling liquid material is easy to flow to cold burden cavity；Due to being equipped with active type chamber, active type chamber is made to stop compression
Preceding volume is greater than the volume of product, the intracavitary liquid material of the active type of shaping mobile phone rear cover and its center other than cold burden cavity
Uniformly, cell phone rear cover and its center are easy molding under low speed or low pressure, and product internal stress is good, appearance is beautiful, thick for flowing
Degree is uniform, composite material is not easy to be separated from each other.
Detailed description of the invention
Fig. 1 is that the cell phone rear cover embryo material molding die including center that the present invention adjusts active type chamber by spring is preferably real
Apply the raw material disposal schematic diagram of example.
Fig. 2 is that the cell phone rear cover embryo material molding die including center that the present invention adjusts active type chamber by spring is preferably real
Apply the schematic diagram of example started before molding.
Fig. 3 is that the cell phone rear cover embryo material molding die including center that the present invention adjusts active type chamber by spring is preferably real
Apply the sectional view of the formation active type chamber A of example.
Fig. 4 is that the cell phone rear cover embryo material molding die including center that the present invention adjusts active type chamber by spring is preferably real
Apply the sectional view of the formation active type chamber D of example.
Fig. 5 is that the cell phone rear cover embryo material molding die including center that the present invention adjusts active type chamber by spring is preferably real
Apply the enlarged diagram of W in the formation active type chamber D of example.
Fig. 6 is that the cell phone rear cover embryo material molding die including center that the present invention adjusts active type chamber by spring is preferably real
Apply the sectional view of the formation active type chamber B of example.
Fig. 7 is that the cell phone rear cover embryo material molding die including center that the present invention adjusts active type chamber by spring is preferably real
Apply the sectional view of the formation active type chamber C of example.
Fig. 8 is that the cell phone rear cover embryo material molding die including center that the present invention adjusts active type chamber by spring is preferably real
Apply the sectional view of the formation active type chamber E of example.
Fig. 9 is that the cell phone rear cover embryo material molding die including center that the present invention adjusts active type chamber by spring is preferably real
The taking-up for applying example includes the sectional view of the cell phone rear cover embryo material of center.
Figure 10 is that the cell phone rear cover embryo material molding die including center that the present invention adjusts active type chamber by spring is preferred
The perspective view of the cell phone rear cover embryo material including center of embodiment.
Figure 11 is that the cell phone rear cover embryo material molding die including center that the present invention adjusts active type chamber by spring is preferred
The perspective view of the mobile mould mold core of embodiment.
Figure 12 is that the cell phone rear cover embryo material molding die including center that the present invention adjusts active type chamber by spring is preferred
The perspective view of the stent mold core of embodiment.
Figure 13 is that the cell phone rear cover embryo material molding die including center that the present invention adjusts active type chamber by spring is preferred
The mobile mould schematic diagram of embodiment.
Figure 14 is that the cell phone rear cover embryo material molding die including center that the present invention adjusts active type chamber by spring is preferred
The stent schematic diagram of embodiment.
Specific embodiment
The moulding process for the cell phone rear cover embryo material including center that the present invention adjusts active type chamber by spring is suitable for life
Produce various mobile phone shells, the material used is heavy viscous material or low viscosity material, it is not easy to the composite material that is separated from each other or
The composite material that person is easily separated from each other.
With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 11, Figure 12, Figure 13 and Figure 14, in detail
The thin description present invention adjusts the preferred implementation of the moulding process of the cell phone rear cover embryo material including center of active type chamber by spring
Example.
It in a preferred embodiment, is a kind of using the technique for being easily separated from each other composite molding cell phone rear cover.
Cell phone rear cover needs to have hardness height and the big performance of intensity simultaneously, and hardness height solution cell phone rear cover is wear-resisting and less
The using effect of scratch, the resistance to using effect fallen with anti-cracking of the big solution cell phone rear cover of intensity.
Polymethyl methacrylate, i.e. poly methyl methacrylate, abbreviation PMMA also known as do acryl, Asia
Gram force or organic glass have higher clarity and brightness, heat-resist, and have tough and tensile, and matter is hard, rigidity characteris, is used as hand
Machine rear cover shaping raw material can satisfy the using effect of the wear-resisting and less scratch of cell phone rear cover.
Polycarbonate, abbreviation PC are the high molecular polymer in strand containing carbonate group, a kind of tough thermoplasticity
Resin, shock resistance is good, can satisfy the resistance to using effect fallen with anti-cracking of cell phone rear cover as cell phone rear cover shaping raw material.
In order to meet cell phone rear cover hardness height and the big performance of intensity simultaneously, PMMA+PC composite molding can be used
Cell phone rear cover, still, injection rate range is 500mm/s or more, pressure model in traditional PMMA+PC composite material process planning
It encloses for 2800-3000kgf/cm2, since the speed of material feeding is fast, pressure causes greatly PMMA and PC to be easily separated from each other, form difficulty
Greatly, yield is low.
It, can be low relative to conventional molding process low speed due to using active type chamber in preferred embodiments two of the invention
It is formed under conditions of pressure, since the speed of material feeding is relatively slow, pressure is relatively small, PMMA is not easy to be separated from each other with PC, at
Type difficulty becomes smaller, and yield greatly improves.
It is as follows using PMMA+PC composite molding cell phone rear cover specific embodiment:
The first step dries the composite material of PMMA+PC, injection molding machine is transported to, by the composite material of PMMA+PC by solid-state
It is converted into liquid.
Second step adjusts the temperature of mold corresponding product corresponding position, reaches the cell phone rear cover embryo material of center most preferably at profile bar
Part, the temperature of mobile 1.12 surrounding forming surface 1.12.1 of mould mold core are lower than the temperature of mobile 1.12 intermediary form face 1.12.2 of mould mold core
Degree, the temperature of 1.12 surrounding forming surface 1.12.1 of stent mold core are lower than the temperature of 1.12 intermediary form face 1.12.2 of stent mold core
Degree, the temperature that mold insert combines 1.1.1 are lower than the temperature of mobile 1.12 intermediary form face 1.12.2 of mould mold core or are lower than stent
The temperature of 2.1 intermediary form face 2.1.2 of mold core.
Third step combines 1.1.1 and spring by moving bearing device 1.1.2, mold insert or spring assembly 1.6 forms second
Mobile mechanism 1.1, mobile mould 1 is mobile to 2 direction of stent, starts to mold.
4th step is when second of mobile mechanism 1.1 touches stent 2, by being moved with mobile mould 1, stent 2, second
1.1 structure of motivation forms active type chamber and forms active type chamber A, and stent mold core 2.1 combines 1.1.1 with mold insert into the cold burden cavity F,
Active type chamber volume is maximum at this time, while second of mobile mechanism 1.1 is relative to the moveable maximum distance of the mobile mould 1
L0, moving four forming surface 1.12.1 around mould mold core 1.12 and combining the maximum distance between 1.1.1 with mold insert is T3, fixed
Between four forming surface 1.12.1 around 2.1 4 forming surface 2.1.1 of mould mold core and adjacent mobile mould mold core 1.12 most
Big distance is T4.
Mobile mould 1 described in 5th step continues mobile to 2 direction of stent, until the mobile mould 1 is moved with second
Motivation structure 1.1 is bonded, and reaches complete molding state, forms active type chamber D at this time, and active type chamber D volume is minimum, and second at this time
Mobile mechanism 1.1 is L1, L1=0 relative to the distance of the mobile mould 1, while the compression parameters of the mobile mould 1 are arranged.
Compression parameters of 5th step according to the mobile mould 1 of above-mentioned setting, control the mobile mould by sensor 1.4
The distance mobile to second of mobile mechanism, 1.1 opposite direction, the volume for adjusting active type chamber form active type chamber B, make
Active type chamber B is in running order, and second of mobile mechanism 1.1 is L2 relative to the distance of the mobile mould 1 at this time, and described the
Secondary mobile mechanism 1.1 continues to be bonded holding with the stent 2 under the action of the spring or the spring assembly 1.6
The closing of active type chamber.
Liquid material is injected the active type chamber C by the 6th step, and second of mobile mechanism is relative to the mobile mould at this time
Distance be L3, injection rate range be 180-330mm/s, pressure limit 1500-2000kgf/cm2, in the present embodiment,
Speed is 300mm/s, pressure 1800kgf/cm2, moving the distance between mould mold core 1.12 and stent mold core 2.1 at this time is
T5, T4=T3 >=T5.
Mobile mould 1 described in 7th step is mobile, and active type chamber volume to product requirement volume, forms active type chamber from large to small
E, second of mobile mechanism is L4 relative to the distance of the mobile mould at this time, and L0 > L2 > L3 > L4 >=L1 moves mould at this time
The distance between mold core and stent mold core are T5, T4=T3 >=T5.
The cooling and solidifying molding of 8th step product, the mobile mould 1 is mobile to the direction opposite with the stent 2, opens
Active type chamber, spring or spring assembly 1.6 flick second of mobile mechanism 1.1 and the mobile mould 1, and described second
Secondary mobile mechanism 1.1 is mobile to 2 direction of stent relative to the mobile mould 1, and product 4 takes out from the mobile mould 1.
Liquid material is injected active type chamber described in the active type chamber C and the 7th step and worked the two steps by the 6th step
Sequencing is to start the movement of the 7th step, i.e., the described activity during liquid material is injected the active type chamber C by the 6th step
Type chamber is started to work, and active type chamber volume to product requirement volume, forms active type chamber E from large to small, the active type chamber A's
Volume > active type chamber B volume > active type chamber C volume > active type chamber E volume >=active type
The volume of chamber D.
In other embodiments, the present invention by spring adjust active type chamber the cell phone rear cover embryo material including center at
The liquid material of type technique is heavy viscous material or the composite material being easily separated from each other.
In the present embodiment, the present invention adjusts the molding of the cell phone rear cover embryo material including center of active type chamber by spring
Technique further includes guidance set 3, and the mobile mould 1 further includes second of mobile mechanism 1.1 and position-limit mechanism 1.2.
In the present embodiment, the present invention adjusts the molding of the cell phone rear cover embryo material including center of active type chamber by spring
The active type chamber of technique is two be symmetrically arranged.
In other embodiments, the present invention by spring adjust active type chamber the cell phone rear cover embryo material including center at
The active type chamber of type technique is one.
In other embodiments, the present invention by spring adjust active type chamber the cell phone rear cover embryo material including center at
The active type chamber of type technique is more than one.
In other embodiments, the present invention by spring adjust active type chamber the cell phone rear cover embryo material including center at
The active type chamber of type technique is to be symmetrically arranged two or more.
In the present embodiment, the present invention adjusts the molding of the cell phone rear cover embryo material including center of active type chamber by spring
The molding die of the cell phone rear cover embryo material including center of active type chamber is adjusted used in technique by spring comprising mobile
Mould 1 and stent 2, the mobile mould 1 are equipped with mobile mould support device 1.10, and the stent, which sets 2, stent support device
2.4, the mobile mould 1 and the stent 2 cooperate, and the mobile mould 1 is equipped with mobile mould mold core 1.12, the stent
2 are equipped with stent mold core 2.1, further include guidance set 3, water channel device 5, cold burden cavity F and location structure 6, the mobile mould 1
Including elastic device 1.6, second of mobile mechanism 1.1 and limiting device 1.2, second of mobile mechanism 1.1 passes through described
Guidance set 3, the limiting device 1.2, the elastic device 1.6 are flexibly connected with the mobile mould 1, the mobile mould 1
Mold core 1.12 is located in the mobile mould support device 1.10 by the location structure 6, the mold core 2.1 of the stent 2
It is located in the stent support device 2.4 by the location structure 6, the water channel device 5 is distributed in the mobile mould 1
In the interior and described stent 2, the elastic device 1.6 is compressed in second of mobile mechanism 1.1 and institute by the limiting device 1.2
Between the support device 1.10 for stating mobile mould 1, there are five forming surface, four forming surfaces of surrounding for the mobile mould mold core 1.12
1.12.1 the angle between intermediate forming surface 1.12.2 is more than or equal to 90 degree, and there are five the stent mold cores 2.1
Forming surface, the angle between four forming surface 2.1.1 of surrounding and the forming surface 2.1.2 of centre are more than or equal to 90 degree.
In the present embodiment, the present invention adjusts the molding of the cell phone rear cover embryo material including center of active type chamber by spring
The molding die for adjusting the cell phone rear cover embryo material including center of active type chamber used in technique by spring further includes exhaust
Device 8, second of mobile mechanism include moving bearing device 1.1.2, mold insert combination 1.1.1 and connector 1.1.3, described
Mold insert combination 1.1.1 is fixed on the moving bearing device 1.10 by the connector 1.1.3, the mold insert combination
1.1.1, the mobile mould mold core 1.12 and the stent mold core 2.1 form active type chamber, and the exhaust apparatus 8 is located at described
Around active type chamber, the mold insert combination 1.1.1 directly or indirectly passes through the location structure 6 and is located in the mobile mould
In support device 1.10, the location structure 6 is located at the side of the active type chamber, and the cold burden cavity F is located at the active type
The other side of chamber is simultaneously connected to the active type chamber, and the cold burden cavity F has one or two, around the mobile mould mold core 1.12
Four forming surface 1.12.1 combined with mold insert the maximum distance between 1.1.1 be T3, the stent mold core 2.1 4 molding
The maximum distance between four forming surface 1.12.1 around face 2.1.1 and adjacent mobile mould mold core 1.12 is T4, the shifting
Minimum range between dynamic model mold core 1.12 and the stent mold core 2.1 is T5, T4=T3 >=T5.
In the present embodiment, the present invention adjusts the molding of the cell phone rear cover embryo material including center of active type chamber by spring
The exhaust of the molding die of the cell phone rear cover embryo material including center of active type chamber is adjusted used in technique by spring
Device 8 includes air drain 8.1, exhaust clearance 8.2 and exhaust passage 8.3, the exhaust clearance 8.2 and 8.1 connection of air drain, institute
State exhaust clearance 8.2 divide for two or more, the size of each exhaust clearance 8.2 is according to the exhaust clearance
The difference of 8.2 place die locations is set, and between a location structure 6.2 and two cold burden cavity F triangle is presented
Shape, close to isosceles triangle or close to the shape of equilateral triangle, the cold burden cavity F be located at the stent mold core 2.1 with
Between the mold insert combination 1.1.1, the cavity of the cold burden cavity F is predominantly located at the stent mold core 2.1 or the mold insert
It combines in 1.1.1.
In the present embodiment, the present invention adjusts the molding of the cell phone rear cover embryo material including center of active type chamber by spring
The exhaust of the molding die of the cell phone rear cover embryo material including center of active type chamber is adjusted used in technique by spring
The size in gap 8.2 successively changes from the feed inlet most proximal end from mold to the feed inlet distalmost end from mold or the exhaust
The size in gap 8.2 successively changes from the position that mold molding is easiest to the position that mold molding is most difficult to.
In the present embodiment, the present invention adjusts the molding of the cell phone rear cover embryo material including center of active type chamber by spring
The positioning of the molding die of the cell phone rear cover embryo material including center of active type chamber is adjusted used in technique by spring
Structure 6 includes sprue bushing mold insert 6.1, feed inlet mold insert 6.2 and positioning pin 6.3, and the sprue bushing mold insert 6.2 is pacified by positioning pin 6.3
Mounted in the center of the stent 2, the feed inlet mold insert 6.2 is mounted in the mobile mould 1 by positioning pin 6.3
Heart position.
In the present embodiment, the present invention adjusts the molding of the cell phone rear cover embryo material including center of active type chamber by spring
The exhaust of the molding die of the cell phone rear cover embryo material including center of active type chamber is adjusted used in technique by spring
The size in gap 8.2 is L, 0.005mm≤L≤0.05mm.
In the present embodiment, the present invention adjusts the molding of the cell phone rear cover embryo material including center of active type chamber by spring
The exhaust of the molding die of the cell phone rear cover embryo material including center of active type chamber is adjusted used in technique by spring
The size in gap 8.2 is L, 0.005mm≤L≤0.08mm.
Compared with prior art, the invention has the following advantages: adjustable mold corresponding product corresponding position
Temperature；Since mobile mould mold core and stent mold core are all provided with there are five forming surface, and four around mobile mould mold core at
Type face combined with mold insert between maximum distance >=movement mould mold core and the stent mold core between minimum range, make mobile phone
Rear cover and mobile phone center are integral type, and excessively naturally, reducing cost, and center integral type cell phone rear cover embryo material appearance is than non-one
Body formula it is beautiful；Due to being equipped with cold burden cavity, cooling liquid material is easy to flow to cold burden cavity；Due to being equipped with active type chamber, make
Active type chamber stops the volume that the volume before compression is greater than product, the activity of shaping mobile phone rear cover and its center other than cold burden cavity
Uniformly, cell phone rear cover and its center are easy molding to the intracavitary liquid material flowing of type under low speed or low pressure, and answer in product
Power is good, appearance is beautiful, thickness is uniform, composite material is not easy to be separated from each other.
Above disclosed is only presently preferred embodiments of the present invention, cannot limit the right of the present invention with this certainly
Range, therefore according to equivalent variations made by scope of the present invention patent, it is still within the scope of the present invention.
Claims (10)
1. a kind of moulding process for the cell phone rear cover embryo material including center for adjusting active type chamber by spring, which is characterized in that
Its forming process includes the following steps:
The first step is melted material for liquid by solid-state；
Second step adjusts the temperature of mold corresponding product corresponding position, reaches the best condition of molding of cell phone rear cover embryo material of center,
The temperature of forming surface is lower than the temperature in mobile mould mold core intermediary form face, forming surface around stent mold core around mobile mould mold core
Temperature be lower than the temperature in stent mold core intermediary form face, the temperature of mold insert combination is lower than mobile mould mold core intermediary form face
Temperature or temperature lower than stent mold core intermediary form face；
Third step is combined by moving bearing device, mold insert and spring or spring assembly form second of mobile mechanism, mobile mould to
Stent direction is mobile, starts to mold；
4th step, when second of mobile mechanism touches stent, by with mobile mould, stent, second of mobile mechanism's group
Active type chamber A is formed at active type chamber, stent mold core and mold insert are combined into the cold burden cavity F, and active type chamber volume is most at this time
Greatly, while second of mobile mechanism relative to the mobile moveable maximum distance of mould is L0, four around mobile mould mold core
A forming surface combined with mold insert between maximum distance be T3, four forming surfaces of stent mold core and adjacent mobile mould mold core week
The maximum distance between four forming surfaces enclosed is T4；
Mobile mould described in 5th step continues mobile to the stent direction, until the mobile mould and second of mobile mechanism paste
It closes, reaches complete molding state, form active type chamber D at this time, active type chamber D volume is minimum, at this time second of mobile mechanism's phase
Distance for the mobile mould is L1, L1=0, while the compression parameters of the mobile mould are arranged；
Compression parameters of 5th step according to the mobile mould of above-mentioned setting control the mobile mould to described by sensor
The mobile distance of secondary mobile mechanism's opposite direction, the volume for adjusting active type chamber form active type chamber B, make at active type chamber B
In working condition, second of mobile mechanism is L2 relative to the distance of the mobile mould at this time, and second of mobile mechanism exists
Continue to be bonded with the stent under the action of the spring or the spring assembly and keeps the closing of active type chamber；
Liquid material is injected the active type chamber C by the 6th step, at this time second of mobile mechanism relative to the mobile mould away from
It is T5, T4=T3 >=T5 from the distance between mould mold core and stent mold core for L3, is moved at this time；
Mobile mould described in 7th step is mobile, and active type chamber volume to product requirement volume, forms active type chamber E from large to small, this
When second of mobile mechanism relative to the mobile mould distance be L4, L0 > L2 > L3 > L4 >=L1；
The cooling and solidifying molding of 8th step product, the mobile mould is mobile to the direction opposite with the stent, opens active type
Chamber, spring or spring assembly flick second of mobile mechanism and the mobile mould, second of mobile mechanism phase
Mobile to the stent direction for the mobile mould, product 4 takes out from the mobile mould；
Liquid material is injected the active type chamber C and active type chamber described in the 7th step and worked the successive of the two steps by the 6th step
Sequence is to start the movement of the 7th step, i.e., the described active type chamber during liquid material is injected the active type chamber C by the 6th step
It starts to work, active type chamber volume to product requirement volume, forms active type chamber E, the volume of the active type chamber A from large to small
Volume > active type chamber C volume > active type chamber E volume >=active type chamber D of > active type chamber the B
Volume.
2. the molding work of the cell phone rear cover embryo material including center according to claim 1 for adjusting active type chamber by spring
Skill, which is characterized in that the liquid material is heavy viscous material or the composite material being easily separated from each other.
3. the molding work of the cell phone rear cover embryo material including center according to claim 1 for adjusting active type chamber by spring
Skill, which is characterized in that further include guidance set, the mobile mould further includes second of mobile mechanism and position-limit mechanism.
4. the molding work of the cell phone rear cover embryo material including center according to claim 1 for adjusting active type chamber by spring
Skill, which is characterized in that the liquid material is low viscosity material or is not easy the composite material being separated from each other.
5. the molding work of the cell phone rear cover embryo material including center according to claim 1 for adjusting active type chamber by spring
Skill, which is characterized in that further include the following steps: material is transported to thawing apparatus by pretreatment.
6. the molding work of the cell phone rear cover embryo material including center according to claim 4 for adjusting active type chamber by spring
Skill, which is characterized in that further include the following steps: material is transported to thawing apparatus by pretreatment.
7. the molding work of the cell phone rear cover embryo material including center according to claim 5 for adjusting active type chamber by spring
Skill, which is characterized in that further include the following steps: material is transported to thawing apparatus by pretreatment.
8. the molding work of the cell phone rear cover embryo material including center according to claim 4 for adjusting active type chamber by spring
Skill, which is characterized in that the 5th step by liquid material inject the active type chamber be relative to conventional molding process compared with
It is completed under conditions of low injection rate or lower injection pressure.
9. the molding work of the cell phone rear cover embryo material including center according to claim 1 for adjusting active type chamber by spring
Skill, which is characterized in that the active type chamber is one or more.
10. the molding of the cell phone rear cover embryo material including center according to claim 8 for adjusting active type chamber by spring
Technique, which is characterized in that the active type chamber is two or two or more be symmetrically arranged.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910475408.7A CN110126177A (en) | 2019-05-30 | 2019-05-30 | A kind of moulding process for the cell phone rear cover embryo material including center adjusting active type chamber by spring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910475408.7A CN110126177A (en) | 2019-05-30 | 2019-05-30 | A kind of moulding process for the cell phone rear cover embryo material including center adjusting active type chamber by spring |
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| CN110126177A true CN110126177A (en) | 2019-08-16 |
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Application publication date: 20190816 |