CN113580504B - Injection mold for thin-wall high-melting-point wax pellets - Google Patents
Injection mold for thin-wall high-melting-point wax pellets Download PDFInfo
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- CN113580504B CN113580504B CN202110704344.0A CN202110704344A CN113580504B CN 113580504 B CN113580504 B CN 113580504B CN 202110704344 A CN202110704344 A CN 202110704344A CN 113580504 B CN113580504 B CN 113580504B
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- 239000008188 pellet Substances 0.000 title claims abstract description 50
- 238000002347 injection Methods 0.000 title claims abstract description 44
- 239000007924 injection Substances 0.000 title claims abstract description 44
- 238000001816 cooling Methods 0.000 claims abstract description 62
- 238000007789 sealing Methods 0.000 claims abstract description 40
- 238000000465 moulding Methods 0.000 claims abstract description 13
- 239000000498 cooling water Substances 0.000 claims description 36
- 239000003292 glue Substances 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 14
- 238000002844 melting Methods 0.000 claims description 6
- 239000006187 pill Substances 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 9
- 230000007547 defect Effects 0.000 abstract description 5
- 235000013372 meat Nutrition 0.000 abstract description 3
- 239000001993 wax Substances 0.000 description 58
- 239000012188 paraffin wax Substances 0.000 description 9
- 238000001746 injection moulding Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 6
- 239000012778 molding material Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241001453445 Acalypha rhomboidea Species 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 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
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2701—Details not specific to hot or cold runner channels
- B29C45/2708—Gates
-
- 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
- B29C45/2608—Mould seals
-
- 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
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2737—Heating or cooling means therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
- 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
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2737—Heating or cooling means therefor
- B29C2045/2753—Heating means and cooling means, e.g. heating the runner nozzle and cooling the nozzle tip
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a thin-wall high-melting-point wax ball injection mold, which comprises a filling nozzle, a fixed plate, a core plate, a cavity plate, an ejector plate, a support plate, an ejector plate panel and a movable mold base plate which are sequentially arranged, wherein a sealing plate is arranged between the fixed plate and the core plate; the pouring nozzle is arranged in the middle of the fixed plate, and the tail part of the pouring nozzle sequentially penetrates through the fixed plate and the sealing plate to extend to the top end surface of the core plate to be communicated with the top end surface of the core plate; a plurality of cores are arranged at intervals around the middle part of the core plate; the middle part of the cavity plate is provided with a plurality of wax pellet forming cavities corresponding to the mold cores, and the mold cores extend into the wax pellet forming cavities and are communicated with the wax pellet forming cavities; the ejector pin panel is provided with a plurality of ejector pins, the bottom ends of the ejector pins are fixedly connected with the ejector pin panel, and the top ends of the ejector pins sequentially penetrate through the supporting plate and the ejector pin panel and upwards extend to the wax ball forming cavity. The thin-wall high-melting-point wax ball injection mold has good cooling molding effect, and avoids the defect of notch meat after demolding.
Description
Technical Field
The invention belongs to the technical field of wax pellet injection molds, and particularly relates to a thin-wall high-melting-point wax pellet injection mold.
Background
The wax pellet is a temperature sensing element of an automobile engine temperature regulator and is formed by injection molding of paraffin. At present, the injection molding technology generally uses plastic as a material, the paraffin material is required to be injection molded, the temperature of a plastic injection mold is generally lower than 100 ℃ because the paraffin material has poorer fluidity than that of the plastic material in a molten state, and the injection mold of a high-melting-point wax ball can smoothly shoot glue only at more than 140 ℃, so that the mold is deformed to seal a mold plate of a casting material channel due to the over high mold temperature, and the sealing is ineffective and leaks wax.
In addition, the wall thickness of the injection molding wax pellets cannot be as thin as 0.5mm, the structure strength is low when the wall thickness is too thin, the influence of a heat source on the thin wall is large, the cooling effect is poor, and the defect of notch meat can be generated after demolding.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides the thin-wall high-melting-point wax pellet injection mold which is excellent in sealing performance and good in cooling forming effect, and the defect that the opening part is lack of meat after demolding is avoided.
In order to achieve the above purpose, the invention adopts the following technical scheme: the injection mold comprises a filling nozzle, a fixed plate, a core plate, a cavity plate, an ejector plate, a supporting plate, an ejector plate panel and a movable mold base plate which are sequentially arranged, wherein a sealing plate is arranged between the fixed plate and the core plate;
the pouring nozzle is arranged in the middle of the fixed plate, and the tail part of the pouring nozzle sequentially penetrates through the fixed plate and the sealing plate to extend to the top end surface of the core plate to be communicated with the top end surface of the core plate; a plurality of cores are arranged at intervals around the middle part of the core plate; the middle part of the cavity plate is provided with a plurality of wax pellet forming cavities corresponding to the mold cores, and the mold cores extend into the wax pellet forming cavities and are communicated with the wax pellet forming cavities;
the top ends of the ejector pins sequentially penetrate through the supporting plate and the ejector plate and upwards extend to the wax pellet forming cavity; after the die is opened, the ejector pin can move along the length direction under the action of external force to eject the wax pellets molded in the wax pellet molding cavity.
In a preferred embodiment, the core plate is provided with a plurality of split runners, and the split runners are communicated with an internal channel which diverges from the center to the core.
As a preferred embodiment, the core plate is provided with a plurality of communicated hot runners, and the hot runners are arranged at the periphery of the core and are used for melting wax in the core and keeping the fluidity of the wax by high-temperature oil circulating in the hot runners; and an oil pipe joint communicated with the hot runner is arranged on the outer wall of the core plate.
As a preferred embodiment, the core comprises a guide channel and a glue injection port, wherein the glue injection port is obliquely arranged at the tail end of the guide channel; the guide channel is communicated with the separate pouring material channel, and the glue injection port is communicated with the wax pill forming cavity.
In a preferred embodiment, a first cooling cavity is arranged in the middle of the cavity plate, and the wax pellet forming cavity is circumferentially arranged on the periphery of the first cooling cavity;
the ejector plate is provided with a first cooling water inlet channel and a first cooling water outlet channel which are respectively communicated with the first cooling cavity.
As a preferred embodiment, the cavity plate is further provided with a plurality of second cooling cavities, and the second cooling cavities are circumferentially arranged on the periphery of the wax pellet forming cavity;
the ejector plate is provided with a second cooling water inlet channel and a second cooling water outlet channel which are respectively communicated with the second cooling cavity; and channels are arranged between two adjacent second cooling cavities for cooling water circulation to cool and mold wax around the periphery of the wax pellet molding cavity.
In a preferred embodiment, a flow guiding fin is disposed in the second cooling chamber.
In a preferred embodiment, the sealing plate is arranged between a fixing plate and the core plate, which are connected by screws.
In a preferred embodiment, the tail end of the sealing plate and the matching surface of the core plate are conical surfaces with the same taper, and a conical surface seal is formed between the tail end of the sealing plate and the matching surface of the core plate.
In a preferred embodiment, the outer wall of the core and the matching surface of the core plate are conical surfaces with the same taper, and a conical surface seal is formed between the outer wall of the core and the matching surface of the core plate.
Compared with the prior art, the method has the following beneficial effects:
firstly, a sealing plate with a conical tail end is added between the core plate and the fixing plate, the same angle conical surface is processed on the core plate and matched with the sealing plate to realize sealing, the fixing plate and the core plate are fixed by screws, gaps are reserved between the sealing plate and the core plate and between the sealing plate and the fixing plate, the conical sealing surface is tightly pressed by the locking force of the screws, and the problem of wax leakage after the core plate is heated to 140 ℃ and deformed at high temperature is solved.
Secondly, the thin-wall high-melting-point wax ball injection mold adopts the mold core as a glue injection functional part, the glue injection port of the mold core is positioned at the tail end of the molding section and is close to the heat source of the core plate, so that the influence of the temperature at the glue injection port by the cooling of the cavity plate is reduced, the glue injection port is provided with a certain angle, the glue injection resistance is reduced, the requirement on the fluidity of the paraffin is reduced, the required heating mold temperature is reduced, and the influence on the cooling effect of the core plate is reduced due to the reduction of the heating mold temperature.
The core glue injection port structure of the thin-wall high-melting-point wax ball injection mold reduces the fluidity resistance of injection molding materials, simultaneously reduces the low-temperature interference of a mold cooling molding area, improves the thermal efficiency by the structural layout of a hot runner, reduces the heating mold temperature required by continuous glue injection of paraffin, is beneficial to the cooling molding of wax balls due to the reduction of the mold temperature, and enhances the cooling molding effect by the structural layout of a cold runner.
Fourthly, the core hot runner of the thin-wall high-melting-point wax pellet injection mold is designed to be close to the mold core, so that the heat efficiency is enhanced, the cooling cavity adopts the flow guide radiating fin to increase the radiating area, cooling water flows around the flow guide radiating fin, and the cooling structure enhances the cooling effect, so that the good cooling molding of the thin-wall wax pellets is realized, the smooth demolding is realized, and the defect of a thin-wall mouth is avoided.
Drawings
FIG. 1 is a schematic diagram of the structure of the injection mold of the thin-wall high-melting-point wax pellets of the invention;
FIG. 2 is a schematic top view of the injection mold of the thin-walled high-melting wax pellets of FIG. 1;
FIG. 3 is a schematic cross-sectional view of FIG. 2 taken along the direction A-A;
FIG. 4 is a schematic cross-sectional view of the structure of FIG. 3 in the direction B-B;
FIG. 5 is a schematic cross-sectional view of FIG. 3 taken along the direction C-C;
FIG. 6 is a schematic diagram of a flow-directing fin arrangement;
FIG. 7 is a schematic view of the assembly of a seal plate with a core plate;
FIG. 8 is an enlarged schematic view of the structure shown at I in FIG. 7;
FIG. 9 is an enlarged schematic view of a core;
in the figure: 1-pouring nozzle, 2-fixed plate, 3-core plate, 3.1-pouring material channel, 3.2-hot runner, 3.3-oil pipe joint, 4-cavity plate, 4.1-first cooling cavity, 4.2-second cooling cavity, 5-ejector plate, 5.1-first cooling water inlet channel, 5.2-first cooling water outlet channel, 5.3-second cooling water inlet channel, 5.4-second cooling water outlet channel, 6-supporting plate, 7-ejector pin panel, 8-movable mold base plate, 9-sealing plate, 10-core, 10.1-guide runner, 10.2-glue injection port, 11-wax pill molding cavity, 12-ejector pin and 13-guide cooling fin.
Detailed Description
The present invention will be described in further detail with reference to the following examples, which are not intended to limit the scope of the invention.
As shown in fig. 1 to 3, the injection mold for the thin-wall high-melting wax pellets comprises a filling nozzle 1, a fixed plate 2, a core plate 3, a cavity plate 4, a thimble plate 5, a supporting plate 6, a thimble panel 7 and a movable mold base plate 8 which are sequentially arranged, wherein a sealing plate 9 is arranged between the fixed plate 2 and the core plate 3; the filling nozzle 1 is arranged in the middle of the fixed plate 2, and the tail part of the filling nozzle sequentially penetrates through the fixed plate 2 and the sealing plate 9 to extend to the top end surface of the core plate 3 to be communicated with the top end surface; a plurality of cores 10 are arranged around the middle part of the core plate 3 at intervals; the middle part of the cavity plate 4 is provided with a plurality of wax pellet forming cavities 11 corresponding to the mold cores 10, and the mold cores 10 extend into the wax pellet forming cavities 11 and are communicated with the wax pellet forming cavities; the thimble panel 7 is provided with a plurality of thimble 12, the bottom end of the thimble 12 is fixedly connected with the thimble panel 7, and the top end of the thimble 12 sequentially penetrates through the supporting plate 6 and the thimble plate 5 to extend upwards to the wax pellet forming cavity 11; after the die is opened, the ejector pins 12 can move along the length direction under the action of external force to eject the wax pellets molded in the wax pellet molding cavity 11. In the embodiment, the injection molding material paraffin enters the mold through the filling nozzle 1, and is injected after entering the mold core through the separate pouring material channel of the core plate, cooled and molded in the cavity plate, and ejected and discharged by the ejector pin after the mold is opened, so that the injection molding is completed.
In this embodiment, the pouring nozzle 1 is in clearance fit with the fixing plate 2 and the sealing plate 9, and is a first channel port for injection molding materials to enter a mold, then flows to the internal channels of the cores 10 through the split pouring material channels on the core plate 3, the split pouring material channels are a plurality of semicircular grooves which are diverged from the center to the cores, the injection molding materials finally penetrate into the wax pill molding cavity 4 through the glue injection ports on the cores 10, a clearance exists between the lower surface of the fixing plate 2 and the upper surface of the core plate 3, the lower surface of the fixing plate 2 is in contact with the upper surface of the sealing plate 9, the fixing plate 2 is connected with the core plate 3 through screws, the sealing plate 9 is tightly pressed with the core plate 3, the tail of the sealing plate 9 and the matching surface of the core plate 3 are identical taper conical surfaces, so that taper sealing is realized, and wax leakage between the fixing plate 2 and the core plate 3 is prevented. The core plate 3 is internally provided with square hot runners, high-temperature oil circulates in the runners, and the wax in the core 10 is melted to maintain the fluidity of the wax.
As shown in fig. 4, the core plate 3 is provided with a plurality of split runners 3.1, and the plurality of split runners 3.1 communicate with an internal passage that diverges from the center to the core 10. The core plate 3 is provided with a plurality of communicated hot runners 3.2, and the hot runners 3.2 are arranged at the periphery of the core 10 and are used for melting wax in the core 10 by high-temperature oil circulating in the hot runners and keeping the fluidity of the wax; an oil pipe joint 3.3 communicated with the hot runner 3.2 is arranged on the outer wall of the core plate 3. In the embodiment, the hot runner of the core plate is square and is close to the core to provide higher heat efficiency, so that the required heating die temperature can be reduced under the condition of ensuring the paraffin fluidity, and the influence of the cavity plate contacted with the hot runner on the cooling effect of the paraffin balls is reduced. As shown in fig. 5 to 6, a first cooling cavity 4.1 is arranged in the middle of the cavity plate 4, and a wax pellet forming cavity 11 is arranged around the periphery of the first cooling cavity 4.1; the ejector plate 5 is provided with a first cooling water inlet channel 5.1 and a first cooling water outlet channel 5.2, and the first cooling water inlet channel 5.1 and the first cooling water outlet channel 5.2 are respectively communicated with the first cooling cavity 4.1. The cavity plate 4 is also provided with a plurality of second cooling cavities 4.2, and the plurality of second cooling cavities 4.2 are arranged around the periphery of the wax pellet forming cavity 11; the ejector plate 5 is provided with a second cooling water inlet channel 5.3 and a second cooling water outlet channel 5.4, and the second cooling water inlet channel 5.3 and the second cooling water outlet channel 5.4 are respectively communicated with the second cooling cavity 4.2; and a channel communicated with cooling water for circulating is arranged between two adjacent second cooling cavities 4.2 and is used for cooling and forming wax around the peripheral direction of the wax pellet forming cavity 11. A flow guiding fin 13 is arranged in the second cooling cavity 4.2. The second cooling cavity 4.2 is fully distributed around the cavity, cooling fins are arranged in the second cooling cavity 4.2, the flow direction of cooling water is shown in fig. 6, and the flow path of the cooling water is lengthened, so that the cooling effect is enhanced.
In this embodiment, the cavity plate 4 includes a plurality of wax pellet forming cavities around the circumferential direction, the cooling cavities are close to the wax pellet forming cavities, the same number of second cooling cavities are arranged on the outer circumference of the wax pellet forming cavities, and channels are communicated between the second cooling cavities and the second cooling cavities for cooling water circulation to cool and form wax around the circumferential outer surface direction of the wax pellet forming cavities, and guide cooling fins are assembled in the cooling cavities in an interference manner, so that the circulating water is increased to take away more heat. The inner circumference axle center of the wax pellet forming cavity is provided with a first cooling cavity with the diameter as large as possible, the other path of circulating water flows through the cavity to realize the cooling of the wax pellet forming cavity around the direction of the inner circumference surface, the thimble plate 5 is provided with a pipe joint and a cooling water inlet and outlet passage, the cooling water enters the cooling water inlet passage in the thimble plate through the pipe joint to flow into the first cooling cavity and the second cooling cavity, and then flows out through the cooling water outlet passage of the thimble plate. The first cooling chamber and the second cooling chamber are sealed by ring grooves of an o-ring fitted on the cavity plate 4. The ejector pin plate 5 is provided with an ejector pin hole in clearance fit with an ejector pin, the tail end of the ejector pin is provided with a boss which is matched and fixed with a sinking groove of the ejector pin panel, the ejector pin panel 7 drives the ejector pin to eject after the die is opened, and the ejector pin ejects the wax pellets which are completely molded out of the die.
As shown in fig. 1 and 7 to 8, the sealing plate 9 is disposed between the fixing plate 2 and the core plate 3, and the fixing plate 2 and the core plate 3 press the sealing plate 9 and the core plate 3 by screw connection. The tail end of the sealing plate 9 and the matching surface of the core plate 3 are conical surfaces with the same taper, and conical surface sealing is formed between the tail end and the matching surface.
As shown in fig. 9, the core 10 includes a runner 10.1 and a glue injection port 10.2, wherein the glue injection port 10.2 is obliquely arranged at the tail end of the runner 10.1; the guide channel 10.1 is communicated with the split pouring material channel 3.1, and the glue injection port 10.2 is communicated with the wax pill forming cavity 11. The outer wall of the core 10 and the matching surface of the core plate 3 are conical surfaces with the same taper, and conical surface sealing is formed between the two conical surfaces. The matching shapes of the core 10 and the core plate 3 are sealed by adopting the same taper conical surface, so that wax leakage between the core 10 and the core plate 3 is prevented. In the embodiment, the mold core adopts two glue injection ports at the tail end of the molding section, so that the flow resistance is reduced, and the required mold temperature is reduced.
According to the thin-wall high-melting-point wax ball injection mold, the sealing plate with the conical front end is additionally arranged between the core plate and the fixing plate, the same-angle conical surface is machined on the core plate and matched with the sealing plate to realize sealing, the fixing plate and the core plate are fixed by adopting screws, gaps are reserved between the sealing plate and the core plate and between the sealing plate and the fixing plate, the conical sealing surface is tightly pressed by the locking force of the screws, and the problem of wax leakage after the core plate is heated to 140 ℃ and deformed at high temperature is solved. The core is adopted as the glue injection functional part, the glue injection port of the core is positioned at the tail end of the forming section and is close to the heat source of the core plate, so that the influence of the temperature at the glue injection port on the cooling of the cavity plate is reduced, the glue injection port is provided with a certain angle, the glue injection resistance is reduced, the paraffin fluidity requirement is reduced, the required heating die temperature is reduced, and the influence on the cooling effect of the core plate is reduced due to the reduction of the heating die temperature. Meanwhile, the hot runner of the core plate is designed to be close to the core, so that the heat efficiency is enhanced, the heat radiating area of the second cooling cavity is increased by adopting the flow guiding radiating fins, and cooling water flows around the flow guiding radiating fins.
In the foregoing, only the embodiments of the present invention are described, but it should be noted that the remaining details are not described in the prior art, and any changes or substitutions easily conceivable by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (2)
1. A thin-wall high-melting-point wax pellet injection mold is characterized in that: the mold comprises a filling nozzle (1), a fixed plate (2), a core plate (3), a cavity plate (4), a thimble plate (5), a supporting plate (6), a thimble panel (7) and a movable mold base plate (8) which are sequentially arranged, wherein a sealing plate (9) is arranged between the fixed plate (2) and the core plate (3);
the pouring nozzle (1) is arranged in the middle of the fixed plate (2), and the tail part of the pouring nozzle sequentially penetrates through the fixed plate (2) and the sealing plate (9) to extend to the top end surface of the core plate (3) to be communicated with the top end surface; a plurality of cores (10) are arranged around the middle part of the core plate (3) at intervals; the middle part of the cavity plate (4) is provided with a plurality of wax pellet forming cavities (11) corresponding to the mold cores (10), and the mold cores (10) extend into the wax pellet forming cavities (11) and are communicated with the wax pellet forming cavities;
the ejector pin panel (7) is provided with a plurality of ejector pins (12), the bottom ends of the ejector pins (12) are fixedly connected with the ejector pin panel (7), and the top ends of the ejector pins (12) sequentially penetrate through the supporting plate (6) and the ejector pin plate (5) and extend upwards to the wax ball forming cavity (11); after the die is opened, the ejector pin (12) can move along the length direction under the action of external force to eject the wax pellets molded in the wax pellet molding cavity (11);
a plurality of split pouring material channels (3.1) are arranged on the core plate (3), and the internal channels from the center to the core (10) of the split pouring material channels (3.1) are communicated with each other;
the core plate (3) is provided with a plurality of communicated hot runners (3.2), and the hot runners (3.2) are arranged at the periphery of the core (10) and are used for melting wax in the core (10) and keeping the fluidity of the wax by high-temperature oil circulating in the core; an oil pipe joint (3.3) communicated with the hot runner (3.2) is arranged on the outer wall of the core plate (3);
the mold core (10) comprises a guide channel (10.1) and a glue injection port (10.2), wherein the glue injection port (10.2) is obliquely arranged at the tail end of the guide channel (10.1); the guide channel (10.1) is communicated with the separate pouring material channel (3.1), and the glue injection port (10.2) is communicated with the wax pill forming cavity (11);
the middle part of the cavity plate (4) is provided with a first cooling cavity (4.1), and the wax pellet forming cavity (11) is arranged around the periphery of the first cooling cavity (4.1);
a first cooling water inlet channel (5.1) and a first cooling water outlet channel (5.2) are arranged on the thimble plate (5), and the first cooling water inlet channel (5.1) and the first cooling water outlet channel (5.2) are respectively communicated with the first cooling cavity (4.1);
the cavity plate (4) is also provided with a plurality of second cooling cavities (4.2), and the second cooling cavities (4.2) are arranged around the periphery of the wax pellet forming cavity (11);
a second cooling water inlet channel (5.3) and a second cooling water outlet channel (5.4) are arranged on the thimble plate (5), and the second cooling water inlet channel (5.3) and the second cooling water outlet channel (5.4) are respectively communicated with the second cooling cavity (4.2); a channel is arranged between two adjacent second cooling cavities (4.2) for communicating cooling water for circulating and cooling wax around the periphery of the wax pellet forming cavity (11);
the sealing plate (9) is arranged between the fixing plate (2) and the core plate (3), and the fixing plate (2) is connected with the core plate (3) through screws;
the tail end of the sealing plate (9) and the matching surface of the core plate (3) are conical surfaces with the same taper, and conical surface sealing is formed between the tail end and the matching surface;
the outer wall of the core (10) and the matching surface of the core plate (3) are conical surfaces with the same taper, and conical surface sealing is formed between the outer wall and the matching surface.
2. The thin-walled high melting wax pellet injection mold of claim 1, wherein: and a diversion cooling fin (13) is arranged in the second cooling cavity (4.2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110704344.0A CN113580504B (en) | 2021-06-24 | 2021-06-24 | Injection mold for thin-wall high-melting-point wax pellets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110704344.0A CN113580504B (en) | 2021-06-24 | 2021-06-24 | Injection mold for thin-wall high-melting-point wax pellets |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113580504A CN113580504A (en) | 2021-11-02 |
| CN113580504B true CN113580504B (en) | 2023-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110704344.0A Active CN113580504B (en) | 2021-06-24 | 2021-06-24 | Injection mold for thin-wall high-melting-point wax pellets |
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| CN (1) | CN113580504B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104275775A (en) * | 2014-09-05 | 2015-01-14 | 浙江凯华模具有限公司 | Thermal-insulation hot runner of main runner of injection mold with multiple cavities |
| CN206011602U (en) * | 2016-08-12 | 2017-03-15 | 江苏苏美达机电有限公司 | A kind of pressure difference switch injection mold |
| CN109421222A (en) * | 2017-08-23 | 2019-03-05 | 上海未来伙伴机器人有限公司 | A kind of injection mold and injection molding machine |
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| CN2797007Y (en) * | 2005-05-17 | 2006-07-19 | 先锐模具配件(东莞)有限公司 | Hot mouth capable of directly changing colour for thermal flow path mould |
| CN203650845U (en) * | 2013-12-27 | 2014-06-18 | 东莞誉铭新工业有限公司 | Hot runner three-plate mold |
| CN104875351A (en) * | 2015-06-04 | 2015-09-02 | 东莞宏光光学制品有限公司 | Annular circulation water path of optical mold |
| CN211251148U (en) * | 2019-10-25 | 2020-08-14 | 济南圣凯模具有限公司 | Short connecting rod injection mold for automobile air conditioner air door |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104275775A (en) * | 2014-09-05 | 2015-01-14 | 浙江凯华模具有限公司 | Thermal-insulation hot runner of main runner of injection mold with multiple cavities |
| CN206011602U (en) * | 2016-08-12 | 2017-03-15 | 江苏苏美达机电有限公司 | A kind of pressure difference switch injection mold |
| CN109421222A (en) * | 2017-08-23 | 2019-03-05 | 上海未来伙伴机器人有限公司 | A kind of injection mold and injection molding machine |
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