CN113459406A - Forming method and forming die for liquid crystal display rear shell - Google Patents
Forming method and forming die for liquid crystal display rear shell Download PDFInfo
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- CN113459406A CN113459406A CN202110763682.1A CN202110763682A CN113459406A CN 113459406 A CN113459406 A CN 113459406A CN 202110763682 A CN202110763682 A CN 202110763682A CN 113459406 A CN113459406 A CN 113459406A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 46
- 238000000465 moulding Methods 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 77
- 238000001816 cooling Methods 0.000 claims description 44
- 238000001746 injection moulding Methods 0.000 claims description 26
- 239000002994 raw material Substances 0.000 claims description 19
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000012778 molding material Substances 0.000 description 8
- 239000000110 cooling liquid Substances 0.000 description 7
- 239000011159 matrix material Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010112 shell-mould casting Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Images
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
- B29C45/18—Feeding the material into the injection moulding apparatus, i.e. feeding the non-plastified material into the injection unit
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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
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
- B29C45/332—Mountings or guides therefor; Drives 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
- B29C45/38—Cutting-off equipment for sprues or ingates
- B29C45/382—Cutting-off equipment for sprues or ingates disposed outside the mould
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention is suitable for the technical field of liquid crystal displays, and provides a method and a mold for molding a liquid crystal display rear shell. Thereby this application accessible pressure sensor detects feedstock channel's pressure, and then judges whether the material of mould inslot fills up, and then in time stops defeated material, cuts off the material through the blank sword of spiral shaft tip simultaneously, guarantees the integrality of the appearance of the product in the mould inslot.
Description
Technical Field
The invention belongs to the technical field of liquid crystal displays, and particularly relates to a forming method and a forming die for a liquid crystal display rear shell.
Background
The liquid crystal display is an active matrix liquid crystal display driven by Thin Film Transistor (TFT), and mainly uses current to stimulate liquid crystal molecules to generate points, lines and surfaces to match with a back lamp tube to form a picture. IPS, TFT, SLCD all belong to the subclass of LCD.
The rear case of the liquid crystal display is generally injection molded by a mold. The existing die has certain defects when in use, the feeding efficiency is not high, flash is easy to generate, the feeding amount is not controlled, and the production efficiency is not convenient to promote.
Disclosure of Invention
The invention provides a method and a die for forming a liquid crystal display rear shell, and aims to solve the problems in the prior art.
The invention is realized in this way, a liquid crystal display back shell forming die, comprising:
the die assembly comprises a lower die and an upper die which are oppositely arranged; the top of the lower die is provided with a lower die groove formed by depression; a feeding channel penetrating through the upper die is arranged in the middle of the upper die; the feeding channel is communicated with the upper die cavity;
the lifting assembly comprises a side plate, a hydraulic cylinder and a material conveying column; a top plate is fixed at the top of the side plate; the hydraulic cylinder is fixed on the top plate; the output end of the hydraulic cylinder extends downwards and is fixedly connected with one end of the material conveying column; the other end of the material conveying column is fixedly connected to the top of the upper die; a material conveying channel communicated with the feeding channel is arranged in the material conveying column; a motor is arranged in the material conveying column; an output shaft of the motor is fixedly connected with a spiral shaft accommodated in the material conveying channel; a feeding pipe communicated with the feeding channel is arranged on the feeding column; the lower end of the spiral shaft is fixedly connected with a material cutting knife; the cutting knife is positioned at the joint of the feeding channel and the upper die cavity;
and a pressure sensor for detecting the pressure value in the feeding channel is arranged in the feeding channel.
Preferably, the lower die is internally provided with a first cooling bin; the lower die is connected with a first liquid inlet pipe and a first liquid outlet pipe which are communicated with the first cooling bin;
a second cooling bin is arranged inside the upper die; and the upper die is connected with a second liquid inlet pipe and a second liquid outlet pipe which are communicated with the second cooling bin.
Preferably, a first liquid inlet valve is mounted on the first liquid inlet pipe; a first liquid discharge valve is arranged on the first liquid discharge pipe;
a liquid inlet valve II is arranged on the liquid inlet pipe II; a second liquid discharge valve is arranged on the second liquid discharge pipe;
the liquid inlet valve I, the liquid discharge valve I, the liquid inlet valve II and the liquid discharge valve II are all electromagnetic valves and are in signal connection with a controller.
Preferably, a plurality of first cooling fins are fixed on the inner wall of the first cooling bin;
and a plurality of second cooling fins are fixed on the inner wall of the second cooling bin.
Preferably, the device further comprises a support component; the support assembly comprises a workbench and support legs; the supporting legs are fixed at the bottom of the workbench and support the workbench;
the lower die is fixed on the upper surface of the workbench;
a bottom plate is fixed at the bottom of the side plate; the bottom plate is installed on the lower surface of the workbench through a plurality of fixing bolts.
Preferably, the lower pot head of supporting leg is equipped with the rubber seat.
The invention also provides a method for forming the liquid crystal display rear shell, which comprises the following steps:
s1, installing any one of the liquid crystal display rear shell forming dies;
s2, driving the upper die to descend through the hydraulic cylinder and to mutually cover the lower die; forming a complete die groove by the lower die groove and the upper die groove;
s3, inputting injection molding raw materials through a feed pipe; starting a motor, wherein the motor drives the screw shaft to rotate so as to convey the injection molding raw material to the mold groove through the feeding channel;
s4, detecting the pressure value in the feeding channel through a pressure sensor; stopping conveying the injection molding raw material when the pressure value is not lower than a preset pressure value; the screw shaft cuts off the injection molding raw material at the joint of the feeding channel and the upper die cavity; and molding the injection molding raw material in the mold groove.
Compared with the prior art, the invention has the beneficial effects that: according to the forming method and the forming die for the liquid crystal display rear shell, the lower die and the upper die which are covered up and down are arranged, the feeding channel with the pressure sensor is arranged in the upper die, the material conveying column connected with the hydraulic cylinder is further arranged, the material conveying channel communicated with the feeding channel is arranged in the material conveying column, the motor connected with the screw shaft is installed in the material conveying column, and the screw shaft is used for driving injection molding raw materials to enter the die groove. Thereby this application accessible pressure sensor detects feedstock channel's pressure, and then judges whether the material of mould inslot fills up, and then in time stops defeated material, cuts off the material through the blank sword of spiral shaft tip simultaneously, guarantees the integrality of the appearance of the product in the mould inslot.
Drawings
Fig. 1 is a schematic view of an overall structure of a liquid crystal display rear shell molding die according to the present invention.
Fig. 2 is a schematic structural view of an upper mold and a lower mold according to the present invention.
Fig. 3 is a schematic structural diagram of the lifting assembly of the present invention.
Fig. 4 is a schematic structural view of an upper mold of the present invention.
Fig. 5 is a schematic structural view of the lower mold of the present invention.
Fig. 6 is an enlarged schematic view of detail a in fig. 3.
In the figure: 1. a mold assembly; 11. a lower die; 111. a first cooling bin; 112. a liquid inlet pipe I; 113. a first liquid discharge pipe; 114. a first liquid inlet valve; 115. a first drain valve; 116. a first heat sink; 117. a lower die cavity; 12. an upper die; 121. a second cooling bin; 122. a liquid inlet pipe II; 123. a second liquid discharge pipe; 124. a liquid inlet valve II; 125. a second liquid discharge valve; 126. a second heat sink; 127. a feed channel; 128. a pressure sensor; 129. feeding a die cavity; 13. a connecting pipe; 2. a lifting assembly; 21. a side plate; 22. a base plate; 23. a top plate; 24. a hydraulic cylinder; 25. a material conveying column; 251. a motor; 252. a material conveying channel; 253. a feed pipe; 254. a screw shaft; 255. a material cutting knife; 3. a support assembly; 31. a work table; 32. supporting legs; 33. a rubber seat.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further 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 invention and are not intended to limit the invention.
Referring to fig. 1, the present invention provides a technical solution: a forming method and a forming die for a liquid crystal display rear shell are disclosed, wherein the forming die comprises a die component 1, a lifting component 2 and a supporting component 3.
Please refer to fig. 2, 4 and 5. The die assembly 1 comprises a lower die 11 and an upper die 12 which are oppositely arranged; the top of the lower die 11 has a lower die groove 117 formed concavely; the middle part of the upper die 12 is provided with a feeding channel 127 penetrating through the upper die 12; the feed passage 127 communicates with the upper cavity 129.
The lower die 11 is internally provided with a first cooling bin 111; the lower die 11 is connected with a first liquid inlet pipe 112 and a first liquid outlet pipe 113 which are communicated with the first cooling bin 111; a second cooling bin 121 is arranged inside the upper die 12; and a second liquid inlet pipe 122 and a second liquid outlet pipe 123 which are communicated with the second cooling bin 121 are connected to the upper die 12. A first liquid inlet valve 114 is arranged on the first liquid inlet pipe 112; a first drain valve 115 is arranged on the first drain pipe 113; a second liquid inlet valve 124 is arranged on the second liquid inlet pipe 122; a second drain valve 125 is arranged on the second drain pipe 123; the first liquid inlet valve 114, the first liquid outlet valve 115, the second liquid inlet valve 124 and the second liquid outlet valve 125 are all electromagnetic valves and are in signal connection with a controller.
When the upper die 12 and the lower die 11 are closed to each other, the upper mold groove 129 and the lower mold groove 117 form a mold groove. The feed channel 127 is used for injecting injection molding material. The first liquid inlet pipe 112 and the second liquid inlet pipe 122 are used for injecting cooling liquid. The first drain pipe 113 and the second drain pipe 123 are used for discharging the cooling liquid. The first liquid inlet pipe 112 and the first liquid outlet pipe 113 are symmetrically arranged on the side wall of the lower die 11. The second liquid inlet pipe 122 and the second liquid outlet pipe 123 are symmetrically arranged on the side wall of the upper die 12. The first liquid inlet valve 114, the first liquid outlet valve 115, the second liquid inlet valve 124 and the second liquid outlet valve 125 are respectively used for controlling the opening and closing of the first liquid inlet pipe 112, the first liquid outlet pipe 113, the second liquid inlet pipe 122 and the second liquid outlet pipe 123. The opening and closing of the first liquid inlet pipe 112, the first liquid outlet pipe 113, the second liquid inlet pipe 122 and the second liquid outlet pipe 123 are respectively connected with the external connecting pipe 13 through flanges.
In order to improve the cooling efficiency, a plurality of first cooling fins 116 are fixed on the inner wall of the first cooling bin 111; a plurality of second cooling fins 126 are fixed on the inner wall of the second cooling bin 121. The length direction of the first cooling fin 116 is consistent with the flow direction of the cooling liquid in the first cooling bin 111, and the length direction of the second cooling fin 126 is consistent with the flow direction of the cooling liquid in the second cooling bin 121. The first heat sink 116 is disposed on the top wall of the lower mold 11 forming the lower cavity 117. The second heat sink 126 is disposed on the bottom wall of the upper mold 12 forming the upper cavity 129. The first heat sink 116 and the second heat sink 126 can effectively conduct heat of the lower mold cavity 117 and the upper mold cavity 129.
Referring to fig. 1, 3 and 6, the lifting assembly 2 includes a side plate 21, a hydraulic cylinder 24 and a material delivery column 25; a top plate 23 is fixed on the top of the side plate 21; the hydraulic cylinder 24 is fixed on the top plate 23; the output end of the hydraulic cylinder 24 extends downwards and is fixedly connected with one end of a material conveying column 25; the other end of the material conveying column 25 is fixedly connected to the top of the upper die 12; the feeding column 25 is internally provided with a feeding channel 252 communicated with the feeding channel 127; a motor 251 is arranged in the material conveying column 25; an output shaft of the motor 251 is fixedly connected with a screw shaft 254 accommodated in the material conveying channel 252; a feeding pipe 253 communicated with the feeding channel 252 is arranged on the feeding column 25; the lower end of the screw shaft 254 is fixedly connected with a material cutting knife 255; a blanking blade 255 is located at the junction of feed channel 127 and upper chase 129; wherein, a pressure sensor 128 for detecting the pressure value in the feed channel 127 is arranged in the feed channel 127.
Wherein, the side plate 21 and the top plate 23 are integrally formed and are perpendicular to each other. The hydraulic cylinder 24 is used for driving the material conveying column 25 to lift, so that the upper die 12 can be driven to lift synchronously. The lower end of the feeding column 25 is detachably connected to the upper mold 12 by a plurality of fixing bolts. The feed passage 252 and the feed passage 127 have the same diameter and are coaxially disposed. The motor 251 is used for driving the screw shaft 254 to rotate, so as to convey the injection molding raw material in the conveying channel 252, the injection molding raw material enters the conveying channel 252 through the feeding pipe 253, then the injection molding raw material is rapidly injected into the feeding channel 127 through the screw shaft 254, and finally enters the mold groove for filling. The user can judge whether the material in the mould inslot is filled according to the pressure value that pressure sensor 128 detected, when the pressure value reached preset value, judges that the material spills over, then stops to pour into the raw materials of moulding plastics into. Meanwhile, the motor 251 can cut off the materials through the material cutting knife 255 until the injection molding raw materials are molded in the mold groove, so that the integrity of the appearance of the product in the mold groove is ensured.
Referring to fig. 1, the support assembly 3 includes a table 31 and support legs 32; the support legs 32 are fixed at the bottom of the workbench 31 and support the workbench 31; the lower mold 11 is fixed on the upper surface of the table 31; a bottom plate 22 is fixed at the bottom of the side plate 21; the base plate 22 is mounted on the lower surface of the table 31 by a plurality of fixing bolts. The lower end of the supporting leg 32 is sleeved with a rubber seat 33.
Wherein the table 31 is used to support the lower mold 11. The bottom plate 22 is integrally formed with the side plate 21 and is perpendicular to the side plate 21. The plurality of fixing bolts on the base plate 22 are distributed in a uniform matrix. The supporting legs 32 are provided with four and are the matrix and distribute at workstation 31 lower surface border. The top of rubber seat 33 has the caulking groove of sunken formation, and in the lower extreme detachable embedding caulking groove of supporting leg 32, rubber seat 33 can provide the shock attenuation to supporting leg 32, can increase frictional force simultaneously.
The invention relates to a method for forming a liquid crystal display rear shell, which comprises the following steps:
and S1, installing the liquid crystal display rear shell forming die.
S2, driving the upper die 12 to descend through the hydraulic cylinder 24 and to mutually cover the lower die 11; such that lower cavity 117 and upper cavity 129 form a complete mold cavity.
S3, inputting injection molding raw materials through a feed pipe 253; the motor 251 is activated, and the motor 251 rotates the screw shaft 254 to deliver the injection molding material through the feed channel 127 to the mold chase. The injection molding material enters the material conveying channel 252 through the material inlet pipe 253, is rapidly injected into the material feeding channel 127 through the screw shaft 254, and finally enters the mold groove for filling.
S4, detecting the pressure value in the feed passage 127 by the pressure sensor 128; stopping conveying the injection molding raw material when the pressure value is not lower than a preset pressure value; the screw shaft 254 cuts the injection molding material at the junction of the feed channel 127 and the upper cavity 129. Opening a first liquid inlet valve 114, a first liquid outlet valve 115, a second liquid inlet valve 124 and a second liquid outlet valve 125, inputting cooling liquid into a first cooling bin 111 and a second cooling bin 121 through a first liquid inlet pipe 112 and a second liquid inlet pipe 122, enabling the cooling liquid to flow to a first liquid outlet pipe 113 and a second liquid outlet pipe 123 through the first cooling bin 111 and the second cooling bin 121, and enabling the cooling liquid to be in heat exchange with the upper die 12, the lower die 11 and the first cooling fins 116 and the second cooling fins 126 in the upper die 12 and the lower die 11 in the flowing process, so that the upper die 12 and the lower die 11 are rapidly cooled. And the injection molding raw materials are molded in the mold groove, so that the integrity of the appearance of the product in the mold groove is ensured.
In summary, according to the forming method and the forming mold for the liquid crystal display rear shell of the present invention, the lower mold 11 and the upper mold 12 are provided with the upper cover and the lower cover, the feeding channel 127 with the pressure sensor 128 is provided in the upper mold 12, the feeding column 25 connected to the hydraulic cylinder 24 is further provided, the feeding channel 252 communicated with the feeding channel 127 is provided in the feeding column 25, the motor 251 connected to the screw shaft 254 is installed in the feeding column 25, the screw shaft 254 is used for driving the injection molding material to enter the mold groove, the injection molding material enters the feeding channel 252 through the feeding pipe 253, then the injection molding material is rapidly injected into the feeding channel 127 by the screw shaft 254, and finally the injection molding material enters the mold groove for filling. Thereby this application accessible pressure sensor 128 detects feed channel 127's pressure, and then judges whether the material in the mould groove fills up, and then in time stops the defeated material, cuts off the material through the blank sword 255 of screw axis 254 tip simultaneously, guarantees the integrality of the appearance of the product in the mould groove. In addition, this application still through setting up cooling storehouse one 111 and cooling storehouse two 121 to set up fin one 116 and fin two 126 in cooling storehouse one 111 and cooling storehouse two 121 respectively, cooling storehouse one 111 and cooling storehouse two 121 are used for the cooling fluid to flow, thereby can realize efficient heat conduction and interaction through fin one 116 and fin two 126, and then realize high-efficient cooling, increase production efficiency.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The utility model provides a liquid crystal display backshell forming die which characterized in that: the method comprises the following steps:
the mould assembly (1) comprises a lower mould (11) and an upper mould (12) which are oppositely arranged; the top part of the lower die (11) is provided with a lower die cavity (117) formed by depression; a feeding channel (127) penetrating through the upper die (12) is arranged in the middle of the upper die (12); the feeding channel (127) is communicated with the upper die cavity (129);
the lifting assembly (2) comprises a side plate (21), a hydraulic cylinder (24) and a material conveying column (25); a top plate (23) is fixed at the top of the side plate (21); the hydraulic cylinder (24) is fixed on the top plate (23); the output end of the hydraulic cylinder (24) extends downwards and is fixedly connected with one end of the material conveying column (25); the other end of the material conveying column (25) is fixedly connected to the top of the upper die (12); a material conveying channel (252) communicated with the feeding channel (127) is arranged in the material conveying column (25); a motor (251) is arranged in the material conveying column (25); an output shaft of the motor (251) is fixedly connected with a spiral shaft (254) accommodated in the material conveying channel (252); a feeding pipe (253) communicated with the feeding channel (252) is arranged on the feeding column (25); the lower end of the spiral shaft (254) is fixedly connected with a material cutting knife (255); the blanking knife (255) is positioned at the connection of the feed channel (127) and the upper die cavity (129);
wherein a pressure sensor (128) for detecting the pressure value in the feeding channel (127) is arranged in the feeding channel (127).
2. The liquid crystal display rear cover forming mold according to claim 1, wherein: the lower die (11) is internally provided with a first cooling bin (111); a first liquid inlet pipe (112) and a first liquid outlet pipe (113) which are communicated with the first cooling bin (111) are connected to the lower die (11);
a second cooling bin (121) is arranged inside the upper die (12); and the upper die (12) is connected with a second liquid inlet pipe (122) and a second liquid outlet pipe (123) which are communicated with the second cooling bin (121).
3. The liquid crystal display rear cover molding die of claim 2, wherein: a first liquid inlet valve (114) is arranged on the first liquid inlet pipe (112); a first liquid discharge valve (115) is arranged on the first liquid discharge pipe (113);
a second liquid inlet valve (124) is arranged on the second liquid inlet pipe (122); a second liquid discharge valve (125) is arranged on the second liquid discharge pipe (123);
the first liquid inlet valve (114), the first liquid outlet valve (115), the second liquid inlet valve (124) and the second liquid outlet valve (125) are all electromagnetic valves and are in signal connection with a controller.
4. The liquid crystal display rear cover molding die of claim 2, wherein: a plurality of first cooling fins (116) are fixed on the inner wall of the first cooling bin (111);
and a plurality of second cooling fins (126) are fixed on the inner wall of the second cooling bin (121).
5. The liquid crystal display rear cover forming mold according to claim 1, wherein: also comprises a support component (3); the support assembly (3) comprises a workbench (31) and support legs (32); the supporting legs (32) are fixed at the bottom of the workbench (31) and support the workbench (31);
the lower die (11) is fixed on the upper surface of the workbench (31);
a bottom plate (22) is fixed at the bottom of the side plate (21); the bottom plate (22) is mounted on the lower surface of the worktable (31) through a plurality of fixing bolts.
6. The liquid crystal display rear cover forming mold according to claim 5, wherein: the lower pot head of supporting leg (32) is equipped with rubber seat (33).
7. A method for forming a liquid crystal display rear shell is characterized in that: the method comprises the following steps:
s1, installing the liquid crystal display back shell forming die of any one of claims 1 to 6;
s2, driving the upper die (12) to descend through the hydraulic cylinder (24) and to mutually cover the lower die (11); so that the lower cavity (117) and the upper cavity (129) form a complete mold cavity;
s3, inputting injection molding raw materials through a feed pipe (253); starting a motor (251), wherein the motor (251) drives a screw shaft (254) to rotate so as to convey the injection molding raw material to the mold groove through a feeding channel (127);
s4, detecting the pressure value in the feeding channel (127) through the pressure sensor (128); stopping conveying the injection molding raw material when the pressure value is not lower than a preset pressure value; the screw shaft (254) cuts off the injection molding raw material at the joint of the feeding channel (127) and the upper die cavity (129); and molding the injection molding raw material in the mold groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110763682.1A CN113459406A (en) | 2021-07-06 | 2021-07-06 | Forming method and forming die for liquid crystal display rear shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110763682.1A CN113459406A (en) | 2021-07-06 | 2021-07-06 | Forming method and forming die for liquid crystal display rear shell |
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| CN113459406A true CN113459406A (en) | 2021-10-01 |
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| CN202110763682.1A Pending CN113459406A (en) | 2021-07-06 | 2021-07-06 | Forming method and forming die for liquid crystal display rear shell |
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Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050280186A1 (en) * | 2004-06-18 | 2005-12-22 | Mold-Masters Limited | Melt transfer device for a stack molding apparatus |
| JP2010105345A (en) * | 2008-10-31 | 2010-05-13 | Takamatsu Shinkichi | Gate-cutting member and injection mold equipped with the same |
| CN204367431U (en) * | 2014-10-09 | 2015-06-03 | 广州迅智机械有限公司 | A kind of nano imvite and PET compound formation system |
| CN204869518U (en) * | 2015-07-20 | 2015-12-16 | 洪绍阳 | Cutter drive arrangement in mould |
| CN106042322A (en) * | 2016-07-25 | 2016-10-26 | 宁波伯乐智能装备有限公司 | Injection molding machine with double-rotating-speed extruder |
| CN208497504U (en) * | 2018-07-23 | 2019-02-15 | 江西双宏科技电气有限公司 | A kind of composite modified injection molding machine of plastic |
| CN109333951A (en) * | 2018-12-07 | 2019-02-15 | 贵州省黎平澳尔华绿色食品产业有限公司 | A kind of bottle capper cooling system |
| CN208962353U (en) * | 2018-09-21 | 2019-06-11 | 广东烨嘉光电科技股份有限公司 | A kind of injection mold with blanking structure |
| CN210283025U (en) * | 2019-07-03 | 2020-04-10 | 江苏西马特塑业有限公司 | Material supplementing system of plastic injection molding machine |
| CN210733039U (en) * | 2019-07-14 | 2020-06-12 | 江苏润沃驰塑业有限公司 | Automobile ornament injection molding equipment |
| CN111890707A (en) * | 2020-07-16 | 2020-11-06 | 张家港保税区百瑞坤航空材料科技有限公司 | Liquid forming process for composite material |
| CN112123711A (en) * | 2020-10-22 | 2020-12-25 | 苏州福满堂电器科技有限公司 | Injection mold with quick cooling structure |
| CN212266637U (en) * | 2020-04-03 | 2021-01-01 | 天津广起塑料制品股份有限公司 | Plastic bottle forming device |
| CN212472190U (en) * | 2020-05-25 | 2021-02-05 | 滁州市天悦塑胶制品有限公司 | Integrative device of moulding plastics of air conditioner panel |
| CN212554786U (en) * | 2020-06-20 | 2021-02-19 | 富顺县华平制盖有限公司 | Novel injection molding machine injection molding head for bottle cap production |
-
2021
- 2021-07-06 CN CN202110763682.1A patent/CN113459406A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050280186A1 (en) * | 2004-06-18 | 2005-12-22 | Mold-Masters Limited | Melt transfer device for a stack molding apparatus |
| JP2010105345A (en) * | 2008-10-31 | 2010-05-13 | Takamatsu Shinkichi | Gate-cutting member and injection mold equipped with the same |
| CN204367431U (en) * | 2014-10-09 | 2015-06-03 | 广州迅智机械有限公司 | A kind of nano imvite and PET compound formation system |
| CN204869518U (en) * | 2015-07-20 | 2015-12-16 | 洪绍阳 | Cutter drive arrangement in mould |
| CN106042322A (en) * | 2016-07-25 | 2016-10-26 | 宁波伯乐智能装备有限公司 | Injection molding machine with double-rotating-speed extruder |
| CN208497504U (en) * | 2018-07-23 | 2019-02-15 | 江西双宏科技电气有限公司 | A kind of composite modified injection molding machine of plastic |
| CN208962353U (en) * | 2018-09-21 | 2019-06-11 | 广东烨嘉光电科技股份有限公司 | A kind of injection mold with blanking structure |
| CN109333951A (en) * | 2018-12-07 | 2019-02-15 | 贵州省黎平澳尔华绿色食品产业有限公司 | A kind of bottle capper cooling system |
| CN210283025U (en) * | 2019-07-03 | 2020-04-10 | 江苏西马特塑业有限公司 | Material supplementing system of plastic injection molding machine |
| CN210733039U (en) * | 2019-07-14 | 2020-06-12 | 江苏润沃驰塑业有限公司 | Automobile ornament injection molding equipment |
| CN212266637U (en) * | 2020-04-03 | 2021-01-01 | 天津广起塑料制品股份有限公司 | Plastic bottle forming device |
| CN212472190U (en) * | 2020-05-25 | 2021-02-05 | 滁州市天悦塑胶制品有限公司 | Integrative device of moulding plastics of air conditioner panel |
| CN212554786U (en) * | 2020-06-20 | 2021-02-19 | 富顺县华平制盖有限公司 | Novel injection molding machine injection molding head for bottle cap production |
| CN111890707A (en) * | 2020-07-16 | 2020-11-06 | 张家港保税区百瑞坤航空材料科技有限公司 | Liquid forming process for composite material |
| CN112123711A (en) * | 2020-10-22 | 2020-12-25 | 苏州福满堂电器科技有限公司 | Injection mold with quick cooling structure |
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Application publication date: 20211001 |