CN113459449A - Injection molding device and process for middle frame of liquid crystal curved screen - Google Patents
Injection molding device and process for middle frame of liquid crystal curved screen Download PDFInfo
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- CN113459449A CN113459449A CN202110762365.8A CN202110762365A CN113459449A CN 113459449 A CN113459449 A CN 113459449A CN 202110762365 A CN202110762365 A CN 202110762365A CN 113459449 A CN113459449 A CN 113459449A
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 102
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims description 8
- 230000008569 process Effects 0.000 title description 5
- 238000001816 cooling Methods 0.000 claims abstract description 84
- 238000002347 injection Methods 0.000 claims abstract description 47
- 239000007924 injection Substances 0.000 claims abstract description 47
- 239000004033 plastic Substances 0.000 claims abstract description 36
- 229920003023 plastic Polymers 0.000 claims abstract description 36
- 238000000465 moulding Methods 0.000 claims abstract description 29
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 239000000498 cooling water Substances 0.000 claims description 20
- 230000000903 blocking effect Effects 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 10
- 238000009415 formwork Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000002826 coolant Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 125000003003 spiro group Chemical group 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
Abstract
The utility model relates to an injection moulding technical field especially relates to an injection moulding device of liquid crystal curved surface screen center, including last mould and the lower mould that is used for moulding plastics liquid crystal curved surface screen center, two cooling bath of "returning" style of calligraphy are seted up to the upper surface of lower mould, every all can dismantle the mould shell of moulding plastics that is connected with a rectangle frame form in the cooling bath, mould shell of moulding plastics with link up through self-rotation screwed joint spare between the cooling bath be used for to mould the inside injection moulding liquid of mould shell. This application sets up the cooling tank that two of "returning" style of calligraphy cup jointed mutually through the upper surface at the lower mould, and place one in every cooling tank and be used for carrying out the mould plastics mould shell of moulding plastics to liquid crystal curved surface screen center to two kinds of different specifications can be realized carrying out injection moulding to the liquid crystal curved surface screen center on same injection molding machine at the single, single injection efficiency has been increased on the one hand, on the other hand has increased the use result to the injection molding machine, the in-service use proportion of injection molding machine has been promoted.
Description
Technical Field
The disclosure relates to the technical field of injection molding, in particular to an injection molding device of a middle frame of a liquid crystal curved screen and a molding process thereof.
Background
Generally, the tonnage of an injection molding machine required for forming a product is mainly determined by the following factors: 1. the size specification of the mould; 2. mold thickness (mold volume thickness); 3. the projected area of the product on the parting surface (mold locking force); 4. product weight (shot size). At present, whether a large and medium-sized liquid crystal television display screen plastic frame product or a mobile phone liquid crystal display screen plastic frame product is a rectangular square frame, when a mold is adopted for production, four narrow and small glue positions on the periphery are generated by injection molding in a product cavity formed by splicing an upper template and a lower template of an injection molding machine, and no object exists in the middle of the rectangular square frame surrounded by the product cavity, so that the projection area of the product (glue position) on a mold parting surface (or the effective use area of the mold parting surface) is relatively small.
Because the projection area of the product on the parting surface of the mold (or the effective use area of the parting surface of the mold) is relatively small, and in addition, the existing single set of mold can only produce one product at a time, the capacity of the injection molding machine is not fully exerted, in short, the small-weight product is produced by using a large-tonnage injection molding machine, the energy efficiency ratio is extremely low, and the product cost is high.
In the production process of the plastic frame of the liquid crystal curved screen middle frame, because the surface frame is thin and has a large area, in the injection molding process, because the injection molding area is large, the injection molding part is cooled slowly, the cooling speed is not enough, the processing efficiency is influenced, and the molding quality of the injection molding part is also influenced
Disclosure of Invention
The purpose of the present disclosure is to provide the problem that the area of the actual use of the existing product on the mold is small, which causes the production of small products by large equipment, the waste of functions, and the problem of slow heat dissipation due to the large area of the middle frame.
To achieve the purpose, the following technical scheme is adopted in the disclosure:
the utility model provides an injection moulding device of liquid crystal curved surface screen center, is including being used for carrying out the last mould and the lower mould of moulding plastics to liquid crystal curved surface screen center, two cooling bath of "returning" style of calligraphy are seted up to the upper surface of lower mould, every all can dismantle the mould shell of moulding plastics that is connected with a rectangle frame form in the cooling bath, mould the mould shell of moulding plastics with link up through the self-rotation screwed joint spare between the cooling bath and be used for to mould the inside injection moulding liquid of mould shell.
The upper surface of the injection mould shell is set to be open, the lower surface of the upper mould is provided with a blocking ring for blocking and sealing the open of the injection mould shell, and the lower surface of the upper mould is used for blocking and sealing the cooling groove.
The injection molding mould shell is divided into two types according to the size of the middle frame of the liquid crystal curved screen, and each type is provided with a plurality of different specifications according to the radian of the curved surface.
The screw connecting piece comprises a self-rotating screw pipe and screw ports, the self-rotating screw pipe is connected with the bottom of the injection mould shell through a bearing, the screw ports are arranged in the cooling grooves, the screw pipes are in screw connection with the screw ports, the screw ports in the two cooling grooves are connected with injection liquid supply equipment through a first communicating channel in the lower mould, and a first three-way valve is arranged in the first communicating channel.
The inner wall of the screw port is provided with a plurality of circles of screw teeth, a plurality of balls are arranged along the screw teeth, and the upper end and the lower end of each ball are exposed on the outer wall of each screw tooth.
The bottom wall of the cooling tank is provided with a plurality of cushion blocks, the cushion blocks form a continuous S-shaped cooling water channel at the bottom of the cooling tank, the inner cooling tank and the outer cooling tank are connected with equipment for cooling water through a second communicating pipeline located inside the lower die, and a second three-way valve is arranged in the second communicating pipeline.
The injection molding mould shell is arranged above the cushion block, the volume of the injection molding mould shell is smaller than that of the cooling groove, and gaps for cooling water to flow are formed between two sides of the injection molding mould shell and two sides of the inner wall of the cooling groove.
And limiting rods are arranged on the surfaces of two sides of the lower die, and the upper die moves along the limiting rods under the action of a hydraulic cylinder arranged at the bottom of the lower die and is used for die assembly and demolding.
An injection molding process of a liquid crystal curved screen middle frame comprises the following steps:
the method comprises the following steps: selecting a proper injection molding mould shell according to the specification of the middle frame of the liquid crystal curved screen to be processed;
step two: installing the selected injection mould shell into a cooling groove of the lower mould, and communicating the injection mould shell with injection liquid supply equipment;
step three: starting a hydraulic cylinder, and lowering an upper die to carry out die assembly to realize sealing of an injection molding die shell;
step four: the water cooling setting is started, and the cooling water is injected into the corresponding cooling tank by controlling the second three-way valve:
step five: after the first three-way valve is started to communicate with the corresponding injection mould shell, injection liquid supply equipment is used for injecting liquid into the injection mould shell for injection moulding;
step six: and after the injection molding is finished, starting a hydraulic cylinder to lift the upper die, and performing demolding treatment on the injection molded liquid crystal curved screen middle frame in the injection molding die shell.
The beneficial effect of this disclosure does:
this application sets up the cooling tank that two of "returning" style of calligraphy cup jointed mutually through the upper surface at the lower mould, and place one in every cooling tank and be used for carrying out the mould plastics mould shell of moulding plastics to liquid crystal curved surface screen center to two kinds of different specifications can be realized carrying out injection moulding to the liquid crystal curved surface screen center on same injection molding machine at the single, single injection efficiency has been increased on the one hand, on the other hand has increased the use result to the injection molding machine, the in-service use proportion of injection molding machine has been promoted.
The central authorities in the cooling bath set up the mould shell of moulding plastics, and every mould shell of moulding plastics that is used for forming liquid crystal curved surface screen center is all surrounded by the coolant liquid all around and the bottom to increased the cooling rate and the efficiency of mould shell of moulding plastics, shortened the cooling time to liquid crystal curved surface screen center, promoted injection moulding's efficiency.
The size of the injection molding die shell and the curvature of the liquid crystal curved screen middle frame which can be formed inside the injection molding die shell are selected according to the specification of the liquid crystal curved screen middle frame, so that the liquid crystal curved screen middle frames with different specifications can be manufactured, and the types of manufacture are increased.
Drawings
Fig. 1 is a schematic view of an overall structure of an injection molding apparatus provided by the present disclosure.
Fig. 2 is a schematic view of an overall structure of an injection molding apparatus provided by the present disclosure.
Fig. 3 is a schematic structural view of the injection molding apparatus provided by the present disclosure with an upper mold removed as a whole.
Fig. 4 is a schematic cross-sectional view of an injection molding apparatus provided by the present disclosure.
Fig. 5 is a schematic view of a half-section structure of a screw member provided by the present disclosure.
In the figure: 1. a lower die; 11. a first communicating passage; 12. a first three-way valve; 13. a second communicating conduit; 14. a second three-way valve; 15. a limiting rod; 16. a hydraulic cylinder;
2. an upper die; 21. a check ring;
3. a cooling tank; 31. cushion blocks; 32. a cooling water channel;
4. injection molding a formwork; 41. opening the mouth;
5. a screw member; 51. a solenoid; 52. screwing; 53. screw teeth; 54. and a ball.
Detailed Description
In order to make the objects, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the disclosure and are not intended to limit the disclosure.
Referring to fig. 1-5, the present disclosure provides a technical solution: the utility model provides an injection moulding device of liquid crystal curved surface screen center, including last mould 2 and lower mould 1 that is used for moulding plastics liquid crystal curved surface screen center, two cooling bath 3 of "returning" style of calligraphy are seted up to the upper surface of lower mould 1, all can dismantle in every cooling bath 3 and be connected with the mould shell 4 of moulding plastics of a rectangle frame form, link up through self-rotation screwed fitting 5 between mould shell 4 of moulding plastics and the cooling bath 3 and be used for to the mould shell 4 inside injection moulding liquid that moulds plastics.
Two cooling bath 3 that cup joint mutually through the upper surface at lower mould 1 set up "return" style of calligraphy, and place one in every cooling bath 3 and be used for carrying out the mould plastics mould shell 4 of moulding plastics to liquid crystal curved surface screen center, thereby can realize carrying out injection moulding to the liquid crystal curved surface screen center of two kinds of different specifications on same injection molding machine at the single, single injection efficiency has been increased on the one hand, on the other hand has increased the use effect to the injection molding machine, the in-service use proportion of injection molding machine has been promoted. The central authorities at cooling bath 3 set up the mould shell 4 of moulding plastics, and every mould shell 4 of moulding plastics that is used for forming liquid crystal curved surface screen center is all surrounded by the coolant liquid all around and the bottom to increased mould shell 4's cooling rate and efficiency of moulding plastics, shortened the cooling time to liquid crystal curved surface screen center, promoted injection moulding's efficiency.
The upper surface of the injection mould shell 4 is set to be an opening 41, the lower surface of the upper mould 2 is provided with a blocking ring 21 for blocking and sealing the opening 41 of the injection mould shell 4, and the lower surface of the upper mould 2 is used for blocking and sealing the cooling groove 3.
The check ring 21 of the upper die 2 is used for blocking and sealing an opening 41 of the injection molding die shell 4 and the cooling groove 3, forming an injection molding cavity with the injection molding die shell 4 and forming a cooling cavity with the cooling groove 3, so that injection molding and cooling of the liquid crystal curved screen middle frame are realized.
The injection mould shell 4 is divided into two types according to the size of the middle frame of the liquid crystal curved screen, and each type is provided with a plurality of different specifications according to the radian of the curved surface.
The size of the injection molding die shell 4 and the curvature of the liquid crystal curved screen middle frame which can be formed inside the injection molding die shell 4 are selected according to the specification of the liquid crystal curved screen middle frame, so that the manufacturing of the liquid crystal curved screen middle frames with different specifications is realized, and the types of manufacturing are increased.
The screw connector 5 comprises a self-rotating screw pipe 51 connected with the bottom of the injection mould shell 4 through a bearing and screw ports 52 arranged in the cooling grooves 3, the screw pipe 51 is screwed in the screw ports 52, the screw ports 52 in the two cooling grooves 3 are connected with a device for supplying injection liquid through a first communication channel 11 positioned in the lower mould 1, and a first three-way valve 12 is arranged in the first communication channel 11.
The screw pipe 51 rotatably arranged at the bottom of the injection mould shell 4 rotates deeply in the screw port 52 in the pressing process, so that the whole screw pipe 51 is screwed into the screw port 52, the injection mould shell 4 is installed in the cooling groove 3 of the lower mould 1, and the injection mould shell 4 is quickly disassembled.
The injection molding liquid is injected into the screw connector 5 through the first communicating channel 11 in the feeding setting, and then injected into the injection molding formwork 4 through the screw connector 5, so that the injection molding purpose is realized, the screw connector 5 plays a role in connection therein, the screw port 52 of the screw connector 5 is in the cushion block 31, the screw port 52 is also a liquid outlet of the first communicating channel 11, the setting of the first three-way valve 12 is used for controlling the injection use of the injection molding liquid for any one of the injection molding formworks 4 in the inner ring cooling groove 3 and the outer ring cooling groove 3 which are arranged in a 'return' shape, or the injection use of the injection molding liquid for both the injection molding formworks 4 in the outer ring cooling groove 3 and the inner ring cooling groove 3 is realized, and the injection molding operation of the corresponding injection molding formwork 4 is realized.
The inner wall of the screw port 52 is provided with a plurality of turns of screw threads 53, and a plurality of balls 54 are arranged along the screw threads 53, and the upper and lower ends of the balls 54 are exposed on the outer wall of the screw threads 53.
Set up a plurality of ball 54 on the thread 53 along screw thread 52, and the upper and lower both ends of ball 54 are outstanding with the upper and lower both sides of thread 53, thereby when the screw pipe 51 carries out the spiro union to screw thread 52, the thread 53 of the outer wall of screw pipe 51 and the thread 53 in the screw thread 52 interlock the spiro union mutually, ball 54's setting can reduce the frictional resistance between two thread 53, make screw pipe 51 can be quick insert in screw thread 52, and along with the process of inserting of screw pipe 51, screw pipe 51 is also at the rotation, realize autorotation male purpose, strength has been saved in whole setting, make the dismouting of injection mould shell 4 more convenient.
The bottom wall of the cooling tank 3 is provided with a plurality of cushion blocks 31, a continuous S-shaped cooling water channel 32 is formed at the bottom of the cooling tank 3 by the cushion blocks 31, the inner cooling tank 3 and the outer cooling tank 3 are connected with a cooling water device through a second communication pipeline 13 positioned inside the lower die 1, and a second three-way valve 14 is arranged in the second communication pipeline 13.
The cushion block 31 is arranged on one hand for receiving the injection mold shell 4 to facilitate installation of the injection mold shell 4, and on the other hand for erecting the injection mold shell 4, a plurality of continuous S-shaped cooling water channels 32 are formed at the bottom of the injection mold shell 4 to cool the bottom wall of the injection mold shell 4, and meanwhile, a water outlet of the second communicating pipeline 13 is formed in the cushion block 31 and used for leading cooling water supplied by the second communicating pipeline 13 into the cooling water channel 32.
The second three-way valve 14 is used for controlling to lead in cooling water to any one of the inner ring cooling groove 3 or the outer ring cooling groove 3 which are arranged in a shape like the Chinese character 'hui', or to lead in cooling water to both the outer ring cooling groove 3 and the inner ring cooling groove 3, so that the corresponding injection molding formwork 4 is cooled.
An injection molding mould shell 4 is arranged above the cushion block 31, the volume of the injection molding mould shell 4 is smaller than that of the cooling groove 3, and gaps for cooling water to flow are formed between two sides of the injection molding mould shell 4 and two sides of the inner wall of the cooling groove 3.
The volume setting of the mould shell 4 that will mould plastics is less than the volume of cooling bath 3 to leave the clearance between mould shell 4 and the cooling bath 3 of moulding plastics, and then this clearance is used for the packing of cooling water, makes the cooling water can carry out comprehensive encirclement around and the bottom the mould shell 4 of moulding plastics, and then carries out quick cooling to mould shell 4 of moulding plastics, realizes the inside injection molding of mould shell 4 of moulding plastics and is the quick refrigerated purpose of liquid crystal curved surface screen center.
The surfaces of two sides of the lower die 1 are provided with limiting rods 15, and the upper die 2 moves along the limiting rods 15 under the action of a hydraulic cylinder 16 arranged at the bottom of the lower die 1 and is used for die assembly and demolding.
The hydraulic cylinder 16 is arranged in a multistage mode, the upper die 2 is pushed upwards along the limiting rod 15 by starting the hydraulic cylinder 16 to extend, so that the upper die 2 is separated from the lower die 1, the space between the upper die 2 and the lower die 1 is opened, a user can replace the injection molding formwork 4 conveniently, and the injection molding formwork 4 and an internal injection molding part can be demoulded; when pneumatic cylinder 16 contracts, will go up mould 2 and drive downstream along gag lever post 15 for go up and carry out the compound die between mould 2 and the lower mould 1, and then go up mould 2 on the retaining ring 21 and seal the mould shell 4 of moulding plastics on the lower mould 1 and also seal cooling bath 3, be used for subsequent moulding plastics and cooling.
An injection molding process of a liquid crystal curved screen middle frame comprises the following steps:
the method comprises the following steps: selecting a proper injection molding mould shell 4 according to the specification of the middle frame of the liquid crystal curved screen to be processed;
step two: the selected injection mould shell 4 is positioned and then pressed down, and is installed in the cooling tank 3 of the lower mould 1, and the screw pipe 51 of the injection mould shell 4 is in screw joint with the screw port 52 of the cooling tank 3 in the installation process, so that the first communication channel 11 is communicated, and the first communication channel is communicated with injection liquid supply equipment;
step three: starting a hydraulic cylinder 16, descending the upper die 2 to carry out die assembly on the upper die 2 and the lower die 1, so that the upper die 2 descends to be sealed with an injection mould shell 4 to form an injection mould cavity, and sealing the cooling groove 3 to form a cooling cavity;
step four: the water cooling arrangement is started and by controlling the second three-way valve 14, cooling water is injected into the cooling cavity formed by the corresponding cooling channel 3:
step five: after the first three-way valve 12 is started to communicate with the corresponding injection mould shell 4, injection liquid supply equipment is used for injecting liquid into the injection mould shell 4 for injection moulding;
step six: after the injection molding is completed, the hydraulic cylinder 16 is started to lift the upper mold 2, and the demolding treatment is performed on the injection molded liquid crystal curved screen middle frame in the injection mold shell 4.
The above description is only exemplary of the present disclosure and should not be taken as limiting the disclosure, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
Claims (9)
1. The utility model provides an injection moulding device of liquid crystal curved surface screen center which characterized in that: including last mould (2) and lower mould (1) that are used for moulding plastics liquid crystal curved screen center, two cooling bath (3) of "returning" style of calligraphy are seted up to the upper surface of lower mould (1), every all can dismantle in cooling bath (3) and be connected with the mould shell (4) of moulding plastics of a rectangle frame form, mould shell (4) of moulding plastics with link up through self-rotation screwed joint spare (5) between cooling bath (3) and be used for to mould plastics the inside injection moulding liquid of mould shell (4).
2. An injection molding apparatus for a liquid crystal curved panel center according to claim 1, wherein: the upper surface of the injection molding mould shell (4) is arranged to be open (41), the lower surface of the upper mould (2) is provided with a blocking ring (21) for blocking the open (41) of the injection molding mould shell (4) for sealing, and the lower surface of the upper mould (2) for blocking the cooling groove (3) for sealing.
3. An injection molding apparatus for a liquid crystal curved panel center according to claim 1, wherein: the injection molding mould shell (4) is divided into two types according to the size of the middle frame of the liquid crystal curved screen, and each type is provided with a plurality of different specifications according to the radian of the curved surface.
4. An injection molding apparatus for a liquid crystal curved panel center according to claim 1, wherein: the screw joint piece (5) comprises a self-rotating screw pipe (51) connected with the bottom of the injection molding formwork (4) through a bearing and a screw opening (52) arranged in the cooling groove (3), wherein the screw pipe (51) is screwed in the screw opening (52), the screw opening (52) in the cooling groove (3) is connected with a device for supplying injection molding liquid through a first communicating channel (11) in the lower die (1), and a first three-way valve (12) is arranged in the first communicating channel (11).
5. An injection molding apparatus for a liquid crystal curved panel center according to claim 4, wherein: the inner wall of the screw opening (52) is provided with a plurality of circles of screw teeth (53), a plurality of balls (54) are arranged along the screw teeth (53), and the upper end and the lower end of each ball (54) are exposed on the outer wall of each screw tooth (53).
6. An injection molding apparatus for a liquid crystal curved panel center according to claim 4, wherein: the bottom wall of the cooling tank (3) is provided with a plurality of cushion blocks (31), the cushion blocks (31) form continuous S-shaped cooling water channels (32) at the bottom of the cooling tank (3), the inner cooling tank (3) and the outer cooling tank (3) are connected with equipment for cooling water through second communicating pipelines (13) located inside the lower die (1), and second three-way valves (14) are arranged in the second communicating pipelines (13).
7. An injection molding apparatus for a liquid crystal curved panel center according to claim 6, wherein: the injection molding mould shell (4) is placed above the cushion block (31), the volume of the injection molding mould shell (4) is smaller than the volume of the cooling groove (3), and gaps for cooling water to flow are formed between two sides of the injection molding mould shell (4) and two sides of the inner wall of the cooling groove (3).
8. An injection molding apparatus for a liquid crystal curved panel center according to claim 7, wherein: limiting rods (15) are arranged on the surfaces of two sides of the lower die (1), and the upper die (2) moves along the limiting rods (15) under the action of a hydraulic cylinder (16) arranged at the bottom of the lower die (1) and is used for die assembly and demolding.
9. An injection molding process of a liquid crystal curved screen middle frame is characterized in that: the technical characteristics of the injection molding device for the middle frame of the liquid crystal curved screen applying any one of the claims 1 to 8 comprise the following steps:
the method comprises the following steps: selecting a proper injection molding mould shell (4) according to the specification of the middle frame of the liquid crystal curved screen to be processed;
step two: installing the selected injection mould shell (4) into the cooling groove (3) of the lower mould (1), and communicating the injection mould shell (4) with injection liquid supply equipment;
step three: starting a hydraulic cylinder (16), and lowering the upper die (2) to carry out die assembly to realize sealing of the injection molding die shell (4);
step four: starting a water cooling setting and injecting cooling water into the corresponding cooling tank (3) by controlling a second three-way valve (14):
step five: after the first three-way valve (12) is started to communicate with the corresponding injection mould shell (4), injection liquid supply equipment is used for injecting liquid into the injection mould shell (4) for injection moulding;
step six: and after the injection molding is finished, starting a hydraulic cylinder (16) to lift the upper die (2), and performing demolding treatment on the injection molded liquid crystal curved screen middle frame in the injection molding die shell (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110762365.8A CN113459449A (en) | 2021-07-06 | 2021-07-06 | Injection molding device and process for middle frame of liquid crystal curved screen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110762365.8A CN113459449A (en) | 2021-07-06 | 2021-07-06 | Injection molding device and process for middle frame of liquid crystal curved screen |
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| CN113459449A true CN113459449A (en) | 2021-10-01 |
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| CN202110762365.8A Pending CN113459449A (en) | 2021-07-06 | 2021-07-06 | Injection molding device and process for middle frame of liquid crystal curved screen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114889073A (en) * | 2022-05-06 | 2022-08-12 | 深圳鑫宏力精密工业有限公司 | High-precision constant-temperature constant-pressure injection mold capable of realizing water-cooling energy-saving circulation and method |
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| CN201579952U (en) * | 2010-01-27 | 2010-09-15 | 常熟得宝精工有限公司 | Plastic frame injection mould of LCD |
| KR20160028144A (en) * | 2014-09-03 | 2016-03-11 | 삼성전자주식회사 | Display apparatus |
| CN205467163U (en) * | 2016-04-11 | 2016-08-17 | 天津市津伟注塑制品有限公司 | Quick refrigerated injection mold |
| CN211221775U (en) * | 2019-09-03 | 2020-08-11 | 昆山浩本金属制品有限公司 | Die for machining pressure gauge shell |
| CN212194011U (en) * | 2020-05-07 | 2020-12-22 | 吴江市赛旺达精密电子有限公司 | Injection mold for injection molding display middle frame |
| CN213321449U (en) * | 2020-10-13 | 2021-06-01 | 广州海天汽车配件有限公司 | Injection mold with cooling function |
| CN213533590U (en) * | 2020-10-24 | 2021-06-25 | 苏州银兴荣塑胶制品有限公司 | Injection mold of unmanned workshop robot support part |
| CN113021780A (en) * | 2021-03-17 | 2021-06-25 | 江苏康彩塑料新材料科技有限公司 | High-temperature-resistant rapid-forming injection mold |
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| CN114889073A (en) * | 2022-05-06 | 2022-08-12 | 深圳鑫宏力精密工业有限公司 | High-precision constant-temperature constant-pressure injection mold capable of realizing water-cooling energy-saving circulation and method |
| CN114889073B (en) * | 2022-05-06 | 2024-02-13 | 深圳鑫宏力精密工业有限公司 | High-precision constant-temperature and constant-pressure injection mold capable of realizing water-cooling energy-saving circulation and method |
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Application publication date: 20211001 |