CN114043690B - Injection mold for production and processing of mobile phone shells - Google Patents
Injection mold for production and processing of mobile phone shells Download PDFInfo
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- CN114043690B CN114043690B CN202111413663.2A CN202111413663A CN114043690B CN 114043690 B CN114043690 B CN 114043690B CN 202111413663 A CN202111413663 A CN 202111413663A CN 114043690 B CN114043690 B CN 114043690B
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- storage tank
- die
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- 238000002347 injection Methods 0.000 title claims abstract description 23
- 239000007924 injection Substances 0.000 title claims abstract description 23
- 238000012545 processing Methods 0.000 title claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 238000012546 transfer Methods 0.000 claims abstract description 119
- 230000007246 mechanism Effects 0.000 claims abstract description 41
- 230000002265 prevention Effects 0.000 claims abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 173
- 238000003860 storage Methods 0.000 claims description 116
- 238000010438 heat treatment Methods 0.000 claims description 22
- 238000001746 injection moulding Methods 0.000 claims description 16
- 238000005485 electric heating Methods 0.000 claims description 9
- 239000007864 aqueous solution Substances 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 238000005057 refrigeration Methods 0.000 claims description 3
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims description 2
- 238000001816 cooling Methods 0.000 description 19
- 239000000243 solution Substances 0.000 description 11
- 238000000465 moulding Methods 0.000 description 9
- 230000003449 preventive effect Effects 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 6
- 239000004033 plastic Substances 0.000 description 6
- 229920003023 plastic Polymers 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 239000012778 molding material Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
- B29C33/04—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
- B29C33/04—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
- B29C33/046—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam using gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
- B29C45/7312—Construction of heating or cooling fluid flow channels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
- B29C45/7337—Heating or cooling of the mould using gas or steam
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
- B29C33/04—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
- B29C2033/042—Meander or zig-zag shaped cooling channels, i.e. continuous cooling channels whereby a plurality of cooling channel sections are oriented in a substantial parallel direction
Abstract
The invention discloses an injection mold for producing and processing a mobile phone shell, which comprises a bottom plate and two supporting plates at the top of the bottom plate, wherein the tops of the two supporting plates are fixedly connected with a lower mold base, the lower mold base is a box body without a top, the inner wall of the lower mold base is fixedly connected with a heat transfer plate, the top of the heat transfer plate is detachably and fixedly provided with a female mold, the heat transfer plate can transfer heat to the female mold, the inside of the lower mold base is provided with a prevention mechanism for increasing the temperature of the mold, the injection mold further comprises an upper mold base, the bottom of the upper mold base is provided with a male mold which can close to the female mold for closing the mold, the prevention mechanism for increasing the temperature of the mold comprises heat transfer pipelines, the heat transfer pipelines are positioned between the heat transfer plate and the inner bottom of the lower mold base, the heat transfer pipelines are distributed in a serpentine shape, and increase the heat transfer space, and the heat transfer pipelines are contacted with the top of the lower mold base.
Description
Technical Field
The invention relates to the technical field of injection molds of mobile phone shells, in particular to an injection mold for producing and processing mobile phone shells.
Background
Injection molds are generally machines for producing plastic products, in which molten materials are extruded into a mold cavity by injection molding, and are cooled and molded by a cooling system, and in the molding process of a mobile phone shell, injection mold molding is often adopted due to material limitation and production efficiency.
In injection molding, due to the difference of injection molding materials and environmental factors, semi-solidified plastics exist before injection molding is completed, so that the injection molding materials have different cooling time and are subjected to sequential cooling molding, uneven density of finished workpieces is easily caused, welding marks are easily generated, and the quality of the finished workpieces is influenced.
Disclosure of Invention
The invention aims to provide an injection mold for producing and processing a mobile phone shell, which has the advantages of being capable of heating a female die to a certain extent, effectively preventing the occurrence of an early cooling phenomenon, reducing the occurrence of weld marks and solving the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides an injection mold is used in cell-phone shell production and processing, includes bottom plate and two backup pads at top, two the top fixedly connected with die holder of backup pad, the die holder is the box on no top, the inner wall fixedly connected with heat transfer plate of die holder, the detachable fixed mounting in top of heat transfer plate has the die, the heat transfer plate can be with heat transfer to the die, the inside of die holder is provided with the preventing mechanism that increases the mould temperature, still includes the upper die base, the terrace die that can be close to the compound die to the die is installed to the bottom of upper die base.
Preferably, the preventing mechanism for increasing the temperature of the die comprises a heat transfer pipeline, wherein the heat transfer pipeline is positioned between the heat transfer plate and the inner bottom of the lower die holder, the heat transfer pipeline is distributed in a serpentine pipeline manner, a heat exchange space is increased, the heat transfer pipeline is in contact with the top of the lower die holder, and the preventing mechanism further comprises a water supply mechanism for injecting or extracting corresponding temperature into the heat transfer pipeline.
Preferably, the preventive mechanism for increasing the temperature of the mold comprises an electric heating wire and a power supply head for supplying power to the electric heating wire, wherein the electric heating wire is of a disc-shaped structure of a vortex-shaped wire, and the electric heating wire can be heated to a corresponding temperature when being electrified.
Preferably, the preventing mechanism for increasing the temperature of the die comprises a gas heater, wherein the gas heater can heat the gas in the die and output the gas, a sealing space is formed between the heat transfer plate and the inside of the lower die holder, an air inlet pipe is communicated between the output end of the gas heater and the sealing space, an air outlet pipe capable of being opened and closed is further communicated with the outer wall of the lower die holder, and the air outlet pipe is communicated with the inside of the sealing space.
Preferably, the water supply mechanism comprises a first water storage tank and a second water storage tank, the first water storage tank and the second water storage tank are symmetrically arranged by taking the female die as a center, the first water storage tank and the second water storage tank are identical components, the inner walls of the first water storage tank and the second water storage tank are respectively connected with a first piston plate and a second piston plate in a sliding mode, the first piston plate and the second piston plate are identical components, a sliding piston rod penetrates through the first water storage tank and the second water storage tank, two ends of the piston rod are respectively fixedly connected with the outer walls of the first piston plate and the second piston plate, the output ends of the first water storage tank and the second water storage tank are respectively communicated with the head end and the tail end of a heat transfer pipeline, the first water storage tank, the heat transfer pipeline and the second water storage tank are respectively connected with each other in a sealing pipeline, hot water is stored in the first water storage tank, cold water is stored in the second water storage tank, a driving mechanism for driving the piston rod to move left and right is further arranged in the second water storage tank, before the injection molding, the first water storage tank is fully filled with the heat transfer pipeline, the first water storage tank is fully heated by the heat transfer pipeline, and the second water storage tank is fully heated by the heat-liquid, and the water storage tank is fully arranged in the second water storage tank, and the water storage tank is fully heated by the water storage tank, and the water storage tank is fully heated.
Preferably, the conveying pipeline comprises a first pipeline and a second pipeline, the first pipeline is a vertical upward pipeline, the second pipeline is an inverted U-shaped pipe, one end of the first pipeline is communicated with the output end of the first water storage tank, the other end of the first pipeline is communicated with one end of the second pipeline, the other end of the second pipeline is communicated with one end of the heat transfer pipeline, and the interior of the second pipeline is filled with air.
Preferably, a hydraulic cylinder is fixedly connected to the top of the upper die holder, the output end of the hydraulic cylinder penetrates through the upper die holder, and the bottom end of the upper die holder is fixedly connected with the top of the male die.
Preferably, a plurality of slidable push rods penetrate through the top of the male die, a transmission plate is fixedly connected to the top of the push rod, a supporting spring is sleeved on the outer wall of the push rod and provides supporting force for the transmission plate, a plurality of limit posts are arranged at the bottom of the upper die base, the bottom of the push rod is flush with the bottom of the male die, and when the hydraulic cylinder is input, the transmission plate can be abutted to the limit posts, so that the male die moves upwards along the outer wall of the push rod to assist in demolding.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention can make the heat generated by the preventing mechanism transferred to the female die through the heat transfer plate by arranging the heat transfer plate and the preventing mechanism for increasing the temperature of the die, thereby raising the temperature of the whole female die, and when the male die is clamped downwards for injection, the injected molten plastic can not start to cool and solidify in advance due to the low temperature state of the female die, thereby preventing the occurrence of different cooling molding time.
2. The invention can compound the length and width of the mobile phone shell by arranging the snakelike heat transfer pipeline, thereby compounding the bottom of the female die, and can increase the length of the heat transfer pipeline by arranging the snakelike structure, so that the temperature of the heat transfer plate can be quickly increased to a specific temperature, and then the temperature of the female die is increased, thereby reducing the occurrence of the phenomenon of cooling and solidification in advance, and the interior of the heat transfer pipeline can be filled with hot water with the specific temperature by a hot water supply mode, thereby generating high temperature on the pipe wall of the heat transfer pipeline, and further increasing the temperature of the female die by the heat transfer plate.
And through the mode of water injection to heat transfer pipeline inside, can make quick messenger's temperature promote, can also be after the completion of moulding plastics simultaneously quick take out hot water for the fashioned speed of cooling.
3. According to the invention, the heating wire is arranged, when the heating wire is electrified, high temperature can be generated, and the temperature of the heating wire is changed by changing the voltage of the heating wire, because the common heating wire is a fixed resistance value, the heating efficiency can be increased, the temperature of a local space can be rapidly increased, the temperature of a heat transfer plate can be uniformly increased, the temperature difference of each part of a female die is small, and the phenomenon of early solidification is reduced.
4. According to the invention, the air heater is arranged, so that the air can be heated by the air heater, the heat of the air is uniform, when the air is transmitted to a sealed space through the air inlet pipe, the internal pressure is increased, and the heat transfer is quickened, so that the heat transfer plate can be quickly heated, and the heating speed of the female die is quickened.
5. The invention sets up the water supply mechanism, first: before injection molding, the driving mechanism is started, the first piston plate is enabled to move towards the direction away from the second water storage tank, water with specific temperature in the first water storage tank can be conveyed to the inside of the heat transfer pipeline through the conveying pipeline, meanwhile, the water solution in the heat transfer pipeline can be pumped into the inside of the second water storage tank by the movement of the second piston plate in the inside of the second water storage tank, the refrigerating equipment can refrigerate the water solution in the second water storage tank, and the hot water is completely transferred to the inside of the heat transfer pipeline.
Second,: when the injection molding is completed, the piston rod is required to be cooled, the driving mechanism is used for enabling the piston rod to displace, so that the first piston plate moves towards the direction of the second water storage tank, the second piston plate is used for injecting low-temperature water inside the second water storage tank into the heat transfer pipeline through the conveying pipeline, meanwhile, high-temperature water inside the heat transfer pipeline can be pumped into the first water storage tank, the first water storage tank is heated again, after the heat transfer pipeline is filled with hot water, the refrigerating equipment is enabled to continuously work, the temperature inside the heat transfer pipeline is gradually reduced, and therefore cooling and forming of workpieces in a die cavity can be accelerated.
Third,: after cooling and forming, cold water solution inside the heat transfer pipeline can be transferred to the inside of the second water storage tank, hot water inside the first water storage tank is transferred to the inside of the heat transfer pipeline, and before transferring, the temperature inside the first water storage tank needs to be adjusted to be suitable for forming a workpiece in advance, so that the forming workpiece is softened to a certain extent and deformation of the workpiece is not caused, and the die separation and the die stripping processes can be conveniently carried out.
Drawings
FIG. 1 is a schematic three-dimensional perspective view of the present invention;
FIG. 2 is a right side view of the structure of FIG. 1 according to the present invention;
FIG. 3 is a schematic view of the structure of FIG. 2 taken along line A-A in accordance with the present invention;
FIG. 4 is a schematic view of the isometric view structure of FIG. 3 according to the present invention;
FIG. 5 is a schematic view of the perspective view of FIG. 2 taken along line B-B in accordance with the present invention;
FIG. 6 is a schematic diagram of the front view of FIG. 1 in accordance with the present invention;
FIG. 7 is a schematic perspective view of the cross-section of FIG. 6 taken along line C-C in accordance with the present invention;
FIG. 8 is a schematic structural view of a second embodiment of the preventive mechanism of the present invention;
fig. 9 is a schematic structural view of a third embodiment of the preventive mechanism of the present invention.
In the figure: 2. a hydraulic cylinder; 3. an upper die holder; 4. a limit column; 5. a drive plate; 6. a male die; 7. a push rod; 8. a support spring; 9. a female die; 10. a first pipe; 11. a second pipe; 12. a lower die holder; 13. a heat transfer plate; 14. a support plate; 15. a bottom plate; 16. a liquid heater; 17. a refrigeration device; 18. a first water storage tank; 19. a first piston plate; 20. a piston rod; 21. a second water storage tank; 22. a second piston plate; 23. a heat transfer conduit; 24. a connecting plate; 25. a cylinder; 26. heating wires; 27. a gas heater; 28. an air inlet pipe; 29. an air outlet pipe; 30. a power supply head.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 9, the present invention provides a technical solution: the utility model provides an injection mold is used in cell-phone shell production and processing, including bottom plate 15 and two backup pads 14 at top, the top fixedly connected with die holder 12 of two backup pads 14, die holder 12 is the box on top, the inner wall fixedly connected with heat transfer plate 13 of die holder 12, the detachable fixed mounting in top of heat transfer plate 13 has die 9, heat transfer plate 13 can be with heat transfer to die 9, the inside of die holder 12 is provided with the preventing mechanism that increases the mould temperature, still include upper die holder 3, the terrace die 6 that can be close to the compound die to die 9 is installed to the bottom of upper die holder 3.
In the injection process, in order to reduce the occurrence of weld marks, the injection speed and pressure are generally adjusted, and the increase of the mold temperature can also effectively reduce the occurrence of weld marks.
Therefore, before injection molding, we need to know the melting point temperature of the material so that by this temperature adjusting die temperature we set the heat transfer plate 13, the bottom of the heat transfer plate 13 is provided with a preventive mechanism that increases the die temperature, the top of the heat transfer plate 13 is fitted with the die 9 so that the heat generated by the preventive mechanism can be transferred to the die 9 through the heat transfer plate 13 so that the overall temperature of the die 9 rises, when the punch 6 is clamped down for injection, so that the injected molten plastic will not start to cool and solidify in advance due to the low temperature state of the die 9, thereby being able to prevent the occurrence of time variation of cooling molding.
The heat transfer plate 13 may be made of a material with excellent heat conduction, such as copper, aluminum alloy, etc., so that the temperature of each place of the heat transfer plate 13 is kept uniform, and then the temperature of each place of the die 9 can be equalized, and the temperature difference of each place is reduced, so that the molten injection molding material can be synchronously formed for cooling.
Embodiment one:
a solution is provided that can be implemented to increase the mold temperature.
As shown in fig. 7, the preventive mechanism for increasing the temperature of the mold comprises heat transfer pipes 23, the heat transfer pipes 23 are positioned between the heat transfer plates 13 and the inner bottoms of the lower mold bases 12, the heat transfer pipes 23 are distributed in a serpentine shape, heat exchange space is increased, the heat transfer pipes 23 are in contact with the top of the lower mold bases 12, and a water supply mechanism for injecting or extracting the corresponding temperature into or from the heat transfer pipes 23 is further included.
Through setting up snakelike heat transfer pipeline 23 for can compound the length and width of cell-phone shell, thereby can compound the bottom of die 9, and through setting up snakelike structure, can increase the length of heat transfer pipeline 23, make the temperature of heat transfer plate 13 promote to specific temperature fast, and then make the temperature of die 9 rise, thereby reduce the phenomenon of cooling in advance solidification and take place, through the mode of supplying hot water, can make the inside of heat transfer pipeline 23 be full of the hot water of specific temperature, thereby make the pipe wall of heat transfer pipeline 23 produce the high temperature, thereby improve the temperature of die 9 through heat transfer plate 13.
And through the mode of water injection to heat transfer pipeline 23 inside, can make quick messenger's temperature promote, can also be after the completion of moulding plastics simultaneously quick take out hot water for the fashioned speed of cooling.
Embodiment two:
a second possible solution to increase the temperature of the mould is provided.
As shown in fig. 8, the preventive mechanism for increasing the temperature of the mold includes a heating wire 26 and a power supply head 30 for supplying power to the heating wire 26, the heating wire 26 has a disc-shaped structure of a spiral wire, and the heating wire 26 can be heated to a corresponding temperature when energized.
The electric heating mode can also be used, through setting the heating wire 26, high temperature can be generated when the heating wire 26 is electrified, and the temperature is changed by changing the voltage of the heating wire 26, because the common heating wire is a fixed resistance value, through setting the heating wire 26 to be a disc-shaped connection structure of a vortex-shaped wire, the heating efficiency can be increased, the temperature of a local space can be rapidly improved, the temperature of the heat transfer plate 13 can be uniformly improved, the temperature difference of the positions of the female die 9 is smaller, and the phenomenon of early solidification is reduced.
Embodiment III:
a third possible solution for increasing the mould temperature is provided:
as shown in fig. 9, the preventive mechanism for increasing the temperature of the die comprises a gas heater 27, the gas heater 27 is capable of heating the gas inside and outputting the gas, a sealed space is formed between the heat transfer plate 13 and the inside of the die holder 12, an air inlet pipe 28 is communicated between the output end of the gas heater 27 and the sealed space, an air outlet pipe 29 capable of being opened and closed is also communicated with the outer wall of the die holder 12, and the air outlet pipe 29 is communicated with the inside of the sealed space.
The air heater 27 can heat the air, and the heat of the air is relatively uniform, so that the internal pressure is increased and the heat is transferred faster when the air is transferred to the sealed space through the air inlet pipe 28, thereby enabling the heat transfer plate 13 to heat quickly and accelerating the temperature rising speed of the female die 9.
On the basis of the first embodiment, as shown in fig. 3, a central axis D is marked in the figure, the water supply mechanism comprises a first water storage tank 18 and a second water storage tank 21, the first water storage tank 18 and the second water storage tank 21 are symmetrically arranged by taking a female die 9 as a center, the first water storage tank 18 and the second water storage tank 21 are equivalent components, the inner walls of the first water storage tank 18 and the second water storage tank 21 are respectively and slidably connected with a first piston plate 19 and a second piston plate 22, a slidable piston rod 20 penetrates between the first water storage tank 18 and the second water storage tank 21, two ends of the piston rod 20 are respectively and fixedly connected with the outer walls of the first piston plate 19 and the second piston plate 22, the output ends of the first water storage tank 18 and the second water storage tank 21 are respectively communicated with conveying pipelines, the two conveying pipelines are respectively communicated with the head end and the tail end of a heat transfer pipeline 23, the sealing pipeline is formed among the first water storage tank 18, the conveying pipeline, the heat transfer pipeline 23, the conveying pipeline and the second water storage tank 21, hot water with specific temperature is stored in the first water storage tank 18, cold water is stored in the second water storage tank 21, the sealing device further comprises a driving mechanism for driving the piston rod 20 to move left and right, before injection molding, the inside of the heat transfer pipeline 23 is filled with aqueous solution, the outer wall of the first water storage tank 18 is provided with a liquid heater 16 for heating the aqueous solution in the first water storage tank 18, the outer wall of the second water storage tank 21 is provided with a refrigerating device 17 for refrigerating the aqueous solution in the second water storage tank 21, when the piston rod 20 moves rightwards by a first preset distance, the inside of the heat transfer pipeline 23 is filled with hot water, and the water in the heat transfer pipeline 23 is completely transferred into the inside of the second water storage tank 21 before, when the piston rod 20 moves by a second preset distance, and the portion of water previously inside the heat transfer pipe 23 is transferred to the inside of the second storage tank 21.
As shown in fig. 7, the driving mechanism includes a fixed cylinder 25, an output end of the cylinder 25 is commonly connected with a connecting plate 24 with an outer wall of the piston rod 20, and input and output of the cylinder 25 can control movement of the piston rod 20.
By marking the central axis D, it can be seen in fig. 3 that the first water storage tank 18 and the second water storage tank 21 are symmetrically arranged along the central axis D, and the positions of the first piston plate 19 and the second piston plate 22 may be symmetrically arranged along the central axis D, or may not be necessary, and the output quantity of the first water storage tank 18 is equal to the input quantity of the second water storage tank 21 because the first water storage tank 18 and the second water storage tank 21 are identical components.
Before injection molding, the driving mechanism is started to enable the first piston plate 19 to move in a direction away from the second water storage tank 21, water with a specific temperature in the first water storage tank 18 can be conveyed to the inside of the heat transfer pipeline 23 through the conveying pipeline, meanwhile, the water solution in the second water storage tank 21 is pumped into the inside of the second water storage tank 21 due to the movement of the second piston plate 22, the refrigerating equipment 17 can refrigerate the water solution in the second water storage tank 21, and the temperature in the heat transfer pipeline 23 can be kept constant by enabling the liquid heater 16 to operate, so that the heat transfer pipeline 23 can transfer high temperature to the heat transfer plate 13, and the female die 9 can quickly rise to a certain temperature.
When the temperature of the female die 9 reaches a specific value, injection molding is started by closing the male die 6 and the female die 9, and the female die 9 is kept in a constant temperature state during injection molding.
When the injection molding is completed, the piston rod 20 is displaced by the driving mechanism to move the first piston plate 19 in the direction of the second water storage tank 21, so that the second piston plate 22 injects low-temperature water in the second water storage tank 21 into the heat transfer pipeline 23 through the conveying pipeline, and meanwhile, high-temperature water in the heat transfer pipeline 23 is pumped into the first water storage tank 18 to be heated again, and after the heat transfer pipeline 23 is filled with hot water, the refrigerating equipment 17 is continuously operated, so that the temperature in the heat transfer pipeline 23 is gradually reduced, and the cooling and molding of workpieces in a mold cavity can be accelerated.
The formed workpiece can be coated on the outer wall of the male die 6 due to the expansion and contraction of the material and the shape characteristic of the mobile phone shell.
After cooling and forming, the cold water solution in the heat transfer pipeline 23 can be transferred to the second water storage tank 21, the hot water in the first water storage tank 18 is transferred to the heat transfer pipeline 23, and before transferring, the temperature in the first water storage tank 18 needs to be adjusted to be suitable for forming the workpiece in advance, so that the forming workpiece is softened to a certain extent and deformation of the workpiece is not caused, and the die separation and stripping processes can be conveniently performed.
After cooling and forming, the piston rod 20 needs to be separated into a mold, after forming, a certain distance is formed, so that cold water in the heat transfer pipeline 23 flows back to the second water storage tank 21 by half, and equivalent hot water can enter the heat transfer pipeline 23, so that the temperature in the heat transfer pipeline 23 is changed to a specific temperature, the temperature of the female mold 9 is raised to a certain temperature, the mold is softened when the temperature reaches a certain temperature due to the material characteristic of the mobile phone shell, and the cooled and formed workpiece is softened to a certain degree, thereby facilitating demolding and fully utilizing the use of a water supply mechanism.
Further, the conveying pipeline comprises a first pipeline 10 and a second pipeline 11, the first pipeline 10 is a vertical upward pipeline, the second pipeline 11 is an inverted U-shaped pipe, one end of the first pipeline 10 is communicated with the output end of the first water storage tank 18, the other end of the first pipeline 10 is communicated with one end of the second pipeline 11, the other end of the second pipeline 11 is communicated with one end of the heat transfer pipeline 23, and the interior of the second pipeline 11 is filled with air.
Through the relay communication of the second pipeline 11, after the hot water of the first water storage tank 18 enters the heat transfer pipeline 23, the other second pipeline 11 positioned in the direction of the second water storage tank 21 can block the cold water in the first pipeline 10 and the hot water in the heat transfer pipeline 23, so that the cold water and the hot water are prevented from infiltrating, fusing and cooling each other, and energy consumption is wasted.
As shown in fig. 3, the working principle is as follows: when the hot water in the first water storage tank 18 is conveyed to the heat transfer pipeline 23 through the first pipeline 10 and the second pipeline 11, as air exists in the second pipeline 11, the hot water in the first water storage tank 18 can move upwards along the first pipeline 10, so that the hot water in the heat transfer pipeline 23 is squeezed into the second water storage tank 21 through the air in the second pipeline 11, the air in the other second pipeline 11 can move towards the inner direction of the second water storage tank 21, when the cold water in the heat transfer pipeline 23 passes through the bending position along the second pipeline 11 on the right side of the central axis D, the air in the second pipeline 11 on the right side is reset to the inside of the second pipeline 11, the water can overflow the bending position E of the lowest point of the inverted U shape, when the space of the second pipeline 11 is large enough, the cold water in the heat transfer pipeline 23 can be completely transferred into the inside of the second water storage tank 21, the air in the second pipeline 11 on the left side of the central axis D can be reset, and the hot water in the second pipeline 11 on the right side of the central axis D can be separated from the cold water in the middle when the second pipeline 11 on the right side of the central axis D is reset.
On the basis of the first embodiment, the second embodiment and the third embodiment, the top of the upper die holder 3 is fixedly connected with the hydraulic cylinder 2, the output end of the hydraulic cylinder 2 penetrates through the upper die holder 3, the bottom end of the upper die holder 3 is fixedly connected with the top of the male die 6, the die assembly process of the male die 6 is performed, after cooling and molding are completed, the male die 6 is moved upwards by inputting the hydraulic cylinder 2 upwards, die separation is completed, and the hydraulic cylinder 2 can also control die assembly of the male die 6.
Further, a plurality of slidable push rods 7 penetrate through the top of the male die 6, the top of the push rods 7 is fixedly connected with a transmission plate 5, supporting springs 8 are sleeved on the outer wall of the push rods 7, supporting springs 8 provide supporting force for the transmission plate 5, a plurality of limit posts 4 are arranged at the bottom of the upper die holder 3, the bottom of the push rods 7 is flush with the bottom of the male die 6, when the hydraulic cylinder 2 is input, the transmission plate 5 can abut against the limit posts 4, so that the male die 6 moves upwards along the outer wall of the push rods 7, and demolding is assisted.
After softening the formed mobile phone shell, the mobile phone shell can be more conveniently demoulded through ejection and demoulding matching with the push rod 7, and the formed workpiece cannot be damaged.
In summary, the invention can heat the female die 9 to a certain extent, thereby effectively preventing the occurrence of the phenomenon of pre-cooling and reducing the occurrence of weld marks.
The standard components used in the present embodiment may be purchased directly from the market, but the nonstandard structural components according to the descriptions of the specification and the drawings may also be obtained by unambiguous processing according to the conventional technical knowledge, and meanwhile, the connection manner of each component adopts the conventional means mature in the prior art, and the machinery, the components and the equipment all adopt the conventional types in the prior art, so that the specific description will not be made here.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. Injection mold for mobile phone shell production and processing, including bottom plate (15) and two backup pads (14) at top, its characterized in that: the top of two backup pad (14) fixedly connected with die holder (12), die holder (12) are the box that does not have the top, the inner wall fixedly connected with heat transfer plate (13) of die holder (12), the detachable fixed mounting in top of heat transfer plate (13) has die (9), heat transfer plate (13) can be with heat transfer to die (9), the inside of die holder (12) is provided with the prevention mechanism that increases the mould temperature, still includes upper die holder (3), punch (6) that can be close to the compound die to die (9) are installed to the bottom of upper die holder (3);
the preventing mechanism for increasing the temperature of the die comprises a heat transfer pipeline (23), wherein the heat transfer pipeline (23) is positioned between a heat transfer plate (13) and the inner bottom of a lower die holder (12), the heat transfer pipeline (23) is distributed in a serpentine pipeline manner, a heat exchange space is increased, the heat transfer pipeline (23) is contacted with the top of the lower die holder (12), and the preventing mechanism further comprises a water supply mechanism for injecting or extracting corresponding temperature into the heat transfer pipeline (23);
the water supply mechanism comprises a first water storage tank (18) and a second water storage tank (21), the first water storage tank (18) and the second water storage tank (21) are symmetrically arranged by taking a female die (9) as a center, the first water storage tank (18) and the second water storage tank (21) are identical components, the inner walls of the first water storage tank (18) and the second water storage tank (21) are respectively and slidably connected with a first piston plate (19) and a second piston plate (22), the first piston plate (19) and the second piston plate (22) are identical components, a slidable piston rod (20) penetrates between the first water storage tank (18) and the second water storage tank (21), two ends of the piston rod (20) are respectively and fixedly connected with the outer walls of the first water storage tank (19) and the second piston plate (22), the output ends of the first water storage tank (18) and the second water storage tank (21) are respectively communicated with conveying pipelines, the two conveying pipelines are respectively communicated with the tail ends of a heat transfer pipeline (23), the first water storage tank (18), the conveying pipeline (23) and the second water storage tank (21) are further driven by the injection molding mechanism to move in the front of the first water storage tank (18) and the second water storage tank (21), the cold water storage mechanism is driven to move in the special water storage mechanism, and the cold water storage mechanism is driven to move in the front of the first water storage tank (21), the inside of heat transfer pipeline (23) is full of aqueous solution, the outer wall of first storage water tank (18) is provided with liquid heater (16) for the inside aqueous solution heating of first storage water tank (18), the outer wall of second storage water tank (21) is provided with refrigeration plant (17) for the inside aqueous solution refrigeration of second storage water tank (21), works as piston rod (20) is when first predetermineeing the distance to the right removal, the inside of heat transfer pipeline (23) is full of hot water, and just before the inside water that lies in heat transfer pipeline (23) is all shifted to the inside of second storage water tank (21), works as piston rod (20) is when second predetermineeing the distance, and before lie in the inside water portion of heat transfer pipeline (23) shifts to the inside of second storage water tank (21).
2. The injection mold for manufacturing and processing a mobile phone shell according to claim 1, wherein: the preventing mechanism for increasing the temperature of the die comprises an electric heating wire (26) and a power supply head (30) for supplying power to the electric heating wire (26), wherein the electric heating wire (26) is of a disc-shaped structure of a vortex-shaped wire, and the electric heating wire (26) can be heated to a corresponding temperature when being electrified.
3. The injection mold for manufacturing and processing a mobile phone shell according to claim 1, wherein: the preventing mechanism for increasing the temperature of the die comprises a gas heater (27), wherein the gas heater (27) can heat internal gas and output the gas, a sealed space is formed between the heat transfer plate (13) and the inside of the lower die holder (12), an air inlet pipe (28) is communicated between the output end of the gas heater (27) and the sealed space, an air outlet pipe (29) capable of being opened and closed is further communicated with the outer wall of the lower die holder (12), and the air outlet pipe (29) is communicated with the inside of the sealed space.
4. The injection mold for manufacturing and processing a mobile phone shell according to claim 1, wherein: the conveying pipeline comprises a first pipeline (10) and a second pipeline (11), wherein the first pipeline (10) is a vertical upward pipeline, the second pipeline (11) is an inverted U-shaped pipe, one end of the first pipeline (10) is communicated with the output end of the first water storage tank (18), the other end of the first pipeline (10) is communicated with one end of the second pipeline (11), the other end of the second pipeline (11) is communicated with one end of the heat transfer pipeline (23), and the interior of the second pipeline (11) is filled with air.
5. An injection mold for manufacturing and processing a mobile phone shell according to any one of claims 1 to 3, characterized in that: the top fixedly connected with pneumatic cylinder (2) of upper die base (3), the output of pneumatic cylinder (2) runs through upper die base (3), just the top fixed connection of upper die base (3) bottom and terrace die (6).
6. The injection mold for manufacturing and processing a mobile phone shell according to claim 5, wherein: the top of terrace die (6) is run through there is a plurality of slidable push rods (7), the top fixedly connected with drive plate (5) of push rod (7), the outer wall cover of push rod (7) is equipped with supporting spring (8), supporting spring (8) provide holding power for drive plate (5), the bottom of upper die base (3) is provided with a plurality of spacing posts (4), just the bottom of push rod (7) is parallel and level with the bottom of terrace die (6), works as when pneumatic cylinder (2) are inputed, drive plate (5) can contradict with spacing post (4), thereby make terrace die (6) upwards move along the outer wall of push rod (7), supplementary drawing of patterns.
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| CN202111413663.2A CN114043690B (en) | 2021-11-25 | 2021-11-25 | Injection mold for production and processing of mobile phone shells |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111413663.2A CN114043690B (en) | 2021-11-25 | 2021-11-25 | Injection mold for production and processing of mobile phone shells |
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| CN114043690B true CN114043690B (en) | 2024-04-02 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105313275A (en) * | 2014-07-31 | 2016-02-10 | 天津绿川科技有限公司 | Female mold of injection mold for mobile phone shells |
| CN207206975U (en) * | 2017-09-08 | 2018-04-10 | 深圳市英盟塑胶模具有限公司 | A kind of constant temperature injection mold |
| CN109551733A (en) * | 2019-01-16 | 2019-04-02 | 余泽军 | A kind of constant temperature Plastic injection mould for mobile phone shell |
| CN211389926U (en) * | 2019-12-12 | 2020-09-01 | 大连川锦科技有限公司 | Multifunctional injection mold |
| CN213618144U (en) * | 2020-11-12 | 2021-07-06 | 青岛跃马汽车用品有限公司 | Injection mold for automobile foot pad |
-
2021
- 2021-11-25 CN CN202111413663.2A patent/CN114043690B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105313275A (en) * | 2014-07-31 | 2016-02-10 | 天津绿川科技有限公司 | Female mold of injection mold for mobile phone shells |
| CN207206975U (en) * | 2017-09-08 | 2018-04-10 | 深圳市英盟塑胶模具有限公司 | A kind of constant temperature injection mold |
| CN109551733A (en) * | 2019-01-16 | 2019-04-02 | 余泽军 | A kind of constant temperature Plastic injection mould for mobile phone shell |
| CN211389926U (en) * | 2019-12-12 | 2020-09-01 | 大连川锦科技有限公司 | Multifunctional injection mold |
| CN213618144U (en) * | 2020-11-12 | 2021-07-06 | 青岛跃马汽车用品有限公司 | Injection mold for automobile foot pad |
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| CN114043690A (en) | 2022-02-15 |
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