CN219133084U - Single-hole injection mold with built-in heating runner - Google Patents
Single-hole injection mold with built-in heating runner Download PDFInfo
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- CN219133084U CN219133084U CN202223566391.2U CN202223566391U CN219133084U CN 219133084 U CN219133084 U CN 219133084U CN 202223566391 U CN202223566391 U CN 202223566391U CN 219133084 U CN219133084 U CN 219133084U
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- 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
Abstract
The utility model discloses a single-hole injection mold with a built-in heating runner, which comprises a core plate, a cavity plate and a heating piece, wherein the heating piece is detachably assembled on an injection cylinder assembled by the core plate and the cavity plate in a closed manner, the heating piece comprises a screw cylinder and a heat preservation piece, the screw cylinder is assembled in the injection cylinder assembled by the core plate and the cavity plate in a closed manner, an inner cylinder is fixed on the inner circumferential surface of the screw cylinder, a heating cavity is arranged between the inner circumferential surface of the screw cylinder and the outer circumferential surface of the inner cylinder, heating oil is filled in the heating cavities of the screw cylinder and the inner cylinder, and a plurality of heating rods are vertically fixed in the heating cavities of the screw cylinder and the inner cylinder. The utility model solves the problems that the prior single-hole cavity injection mold main runner lacks a structure for heating and preserving heat for the injected heat-sensitive plastic raw material, and the temperature of the melted heat-sensitive plastic raw material is easy to be reduced when the melted heat-sensitive plastic raw material flows through, so that the viscosity of the melted heat-sensitive plastic raw material is increased, the fluidity is weakened, and the fluidity of the melted heat-sensitive plastic raw material in the main runner is influenced in the later stage when the melted heat-sensitive plastic raw material is injected.
Description
Technical Field
The utility model relates to the technical field of injection molds, in particular to a single-hole injection mold with a built-in heating runner.
Background
The pouring system of the injection mold refers to a runner part before molten plastic enters a cavity from a nozzle, and comprises a main runner, a sub-runner and the like, wherein the main runner is a section of channel for connecting the nozzle of an injection machine to the sub-runner or the cavity in the injection mold, the existing single-hole cavity injection mold only comprises the main runner, the injection machine is firstly used for heating and melting the heat-sensitive plastic raw material during injection, so that the viscosity of the heat-sensitive plastic raw material is reduced, the flow of the heat-sensitive plastic raw material is increased, then an injection port of the injection machine is inserted and communicated with the main runner of the single-hole cavity injection mold for injection, and the melted heat-sensitive plastic flows into the cavity from the main runner.
The structure for heating and preserving heat for the injected heat-sensitive plastic raw material is lacking in the main runner of the existing single-hole cavity injection mold, after the melted heat-sensitive plastic raw material passes through the injection pipeline of the injection molding machine and the main runner, the temperature of the melted heat-sensitive plastic raw material is easy to lower when flowing through due to the lacking of the heat-preserving and heating structure, so that the viscosity of the melted heat-sensitive plastic raw material is increased and the fluidity is weakened, the flow is unsmooth, and even the melted heat-sensitive plastic raw material is easy to solidify and adhere to the inner wall of the main runner, and the fluidity of the melted heat-sensitive plastic raw material in the main runner in the later period is influenced.
Disclosure of Invention
The utility model aims to provide a single-hole injection mold with a built-in heating runner, which aims to solve the problems that a structure for heating and preserving heat for an injected heat-sensitive plastic raw material is lack in a main runner of the existing single-hole cavity injection mold, and the melted heat-sensitive plastic raw material is easy to cool when flowing through, so that the viscosity of the melted heat-sensitive plastic raw material is increased and the fluidity is weakened, the flowing is unsmooth, and the fluidity of the melted heat-sensitive plastic raw material in the main runner is influenced in the later stage of injection.
The utility model is realized in the following way:
the utility model provides a built-in single hole injection mold of heating runner, including the core, die cavity board and heating piece, core grafting on the core constitutes the injection molding die cavity in the die cavity of die cavity board, and the top surface middle part of core and die cavity board is all vertically run through and is offered the sprue that is used for leading in the plastics raw materials, the sprue top of core and die cavity board is all vertically upwards fixed with the injection cylinder that the cross section is C type structure, and the removable heating piece that has assembled on the injection cylinder of the closed equipment of core and die cavity board, the heating piece includes a spiral shell section of thick bamboo and heat preservation piece, wherein the spiral shell section of thick bamboo is assembled in the injection cylinder of the closed equipment of core and die cavity board, and be fixed with the inner tube on the inner circumference of spiral shell section of thick bamboo, and be provided with the heating chamber between the outer circumference of inner circumference of spiral shell section of thick bamboo and inner tube, the heating oil has been annotated in the heating chamber of spiral shell section of thick bamboo and inner tube, and the vertical many heating rods that are fixed with in the heating chamber of spiral shell section of thick bamboo and inner tube.
Further, an internal thread is arranged on the inner circumferential surface of the injection tube, and the internal thread on the injection tube is assembled and connected with the thread of the screw tube.
Further, a plurality of heat conducting net rings are horizontally fixed on the outer circumferential surface of the inner cylinder along the vertical direction, the top end of the inner cylinder vertically penetrates downwards to form an oil filling hole, and a sealing plug is filled in the oil filling hole.
Further, the heat preservation piece comprises a hollow cylinder, the hollow cylinder is vertically sleeved outside the injection cylinder, and the top end of the hollow cylinder is fixed at the top end of the screw cylinder.
Further, the inner wall of the hollow cylinder is fixed with heat preservation cotton.
Furthermore, the two vertical end surfaces of the core plate are horizontally fixed with inserting rods, the two vertical end surfaces of the cavity plate are vertically fixed with hole blocks, and the inserting rods are inserted into the hole blocks in a sliding manner.
Further, the vertical plate is vertically fixed at the end part of the inserted rod of the core plate, the oil cylinders are horizontally fixed on the vertical end surfaces of the two sides of the cavity plate, and the output ends of the oil cylinders are connected to the vertical plate.
Compared with the prior art, the utility model has the beneficial effects that: the melted heat-sensitive plastic raw material injected into the inner cylinder of the heating element is contacted with the inner cylinder, the heating rod is started to generate heat to heat the screw cylinder and heating oil in the heating cavity of the inner cylinder, the heat in the heating oil is transferred to the heat-sensitive plastic raw material of the runner through the wall of the inner cylinder, the temperature of the heat-sensitive plastic raw material in the runner is kept, the problem that the viscosity of the heat-sensitive plastic raw material is increased and the fluidity is weakened due to the fact that the temperature is reduced, the fluidity is unsmooth due to the fact that the fluidity of the melted heat-sensitive plastic raw material in the main runner is affected in the later injection process is solved, and the fluidity of the heat-sensitive plastic raw material in the main runner when the heat-sensitive plastic raw material is added into the injection mold is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the overall structure of the present utility model;
FIG. 2 is a schematic exploded view of the present utility model;
FIG. 3 is a schematic view of an assembly of a core plate and cavity plate in accordance with an embodiment of the present utility model;
FIG. 4 is a schematic view showing an exploded structure of a heating element according to an embodiment of the present utility model;
fig. 5 is an exploded view of the thermal insulation member according to the embodiment of the present utility model.
In the figure: 1. a core plate; 11. a rod; 12. a riser; 2. a cavity plate; 21. a hole block; 22. an oil cylinder; 3. a syringe; 4. a heating member; 41. a screw cylinder; 42. an inner cylinder; 421. a fuel filler hole; 43. a thermally conductive mesh ring; 44. a heating rod; 45. a thermal insulation member; 451. a hollow cylinder; 452. and (5) heat preservation cotton.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.
Referring to fig. 1, 2, 3, 4 and 5, a single-hole injection mold with a built-in heating runner comprises a core plate 1, a cavity plate 2 and a heating element 4, wherein a core on the core plate 1 is inserted into a cavity of the cavity plate 2 to form an injection molding cavity, the middle parts of the top surfaces of the core plate 1 and the cavity plate 2 are vertically penetrated and provided with a main runner for introducing plastic raw materials, injection barrels 3 with cross sections of C-shaped structures are vertically and upwardly fixed at the top ends of the main runners of the core plate 1 and the cavity plate 2, the heating element 4 is detachably assembled on the injection barrels 3 with the core plate 1 and the cavity plate 2 being closed, the heating element 4 comprises a screw barrel 41 and a heat preservation element 45, the screw barrel 41 is assembled in the injection barrels 3 with the core plate 1 and the cavity plate 2 being closed, an inner barrel 42 is fixed on the inner circumference surface of the screw barrel 41, a heating cavity is arranged between the inner circumference surface of the screw barrel 41 and the outer circumference surface of the inner barrel 42, heating oil is filled in the heating cavities of the screw cylinder 41 and the inner cylinder 42, a plurality of heating rods 44 are vertically fixed in the heating cavities of the screw cylinder 41 and the inner cylinder 42, wiring ends of the heating rods 44 are connected in series by adopting wires, then two ends of the wires connected in series of the heating rods 44 are connected in parallel on an external power supply line to supply power to the heating rods 44, a core plate 1 and a cavity plate 2 are combined, a core on the core plate 1 is used for being inserted into the cavity of the cavity plate 2 to form an injection molding cavity, simultaneously, a top surface main runner of the core plate 1 and the cavity plate 2 is closed to form a channel through which melted heat sensitive plastic raw materials are injected, an injection cylinder 3 at the top end is combined to form a closed injection cylinder 3, the screw cylinder 41 on a heating element 4 is assembled in the injection cylinder 3 in a threaded manner, and the assembly of the heating element 4, the core plate 1 and the runner of the cavity plate 2 is completed, then, the injection tube of the injection machine is communicated with the injection cylinder 3, the melted heat-sensitive plastic raw material in the inner cylinder 42 of the heating element 4 is injected to be in contact with the inner cylinder 42, the heating rod 44 is started to generate heat to heat heating oil in the heating cavities of the screw cylinder 41 and the inner cylinder 42, the heat in the heating oil is transferred to the heat-sensitive plastic raw material in the runner through the wall of the inner cylinder 42, the temperature of the heat-sensitive plastic raw material in the runner is kept, the problem that the viscosity of the heat-sensitive plastic raw material is increased and the fluidity is weakened due to the fact that the temperature is reduced, the fluidity is unsmooth due to the fact that the fluidity is caused in the main runner when the melted heat-sensitive plastic raw material is injected in the later period is influenced, and the fluidity of the heat-sensitive plastic raw material in the main runner when the heat-sensitive plastic raw material is injected into the injection mold is improved.
Referring to fig. 2, an internal thread is disposed on an inner circumferential surface of the syringe 3, and the internal thread on the syringe 3 is assembled with the thread of the screw 41, so that the heating element 4 assembled by the threads and the syringe 3 are assembled quickly, and the assembly of the mold is facilitated in a later stage, and the disassembly is performed by opening the mold.
Referring to fig. 4, a plurality of heat conducting net rings 43 are horizontally fixed on the outer circumferential surface of the inner cylinder 42 along the vertical direction, the plurality of heat conducting net rings 43 are used for increasing the contact area between the inner cylinder 42 and heating oil, so that the heat is conducted to the inner cylinder 42 in the later period, the heat-sensitive plastic raw material flowing close to the inner part is conveniently, the top end of the inner cylinder 42 vertically penetrates downwards to form an oil filling hole 421, a sealing plug is filled in the oil filling hole 421, and the heat conducting oil is filled into the heating cavities of the screw cylinder 41 and the inner cylinder 42 by the oil filling hole 421.
Referring to fig. 5, the heat insulation member 45 includes a hollow cylinder 451, the hollow cylinder 451 is vertically sleeved outside the injection cylinder 3, and the top end of the hollow cylinder 451 is fixed at the top end of the screw cylinder 41, the heat insulation cotton 452 is fixed on the inner wall of the hollow cylinder 451, the heat insulation cotton 452 is sleeved outside the injection cylinder 3, the outer wall of the injection cylinder 3 is blocked from contacting with air, heat dissipation through the outer wall of the injection cylinder 3 is reduced, heat utilization efficiency is improved, and the arrangement of the hollow cylinder 451 is convenient for reducing heat dissipation.
Referring to fig. 3, the insert rods 11 are horizontally fixed on the vertical end surfaces on both sides of the core plate 1, the hole blocks 21 are vertically fixed on the vertical end surfaces on both sides of the cavity plate 2, the insert rods 11 are slidably inserted into the hole blocks 21, the vertical plates 12 are vertically fixed at the end parts of the insert rods 11 of the core plate 1, the oil cylinders 22 are horizontally fixed on the vertical end surfaces on both sides of the cavity plate 2, the output ends of the oil cylinders 22 are connected to the vertical plates 12, in use, the oil cylinders 22 are started to stretch and retract, and the vertical plates 12 pushing the end parts of the insert rods 11 of the core plate 1 are horizontally inserted in the hole blocks 21 of the cavity plate 2 in a water smooth movement manner, so that the core plate 1 and the cavity plate 2 can be opened and closed in the later period.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and various modifications and variations may be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (7)
1. A built-in single hole injection mold who heats runner, its characterized in that: the novel plastic injection molding device comprises a core plate (1), a cavity plate (2) and a heating piece (4), wherein a core on the core plate (1) is inserted into a cavity of the cavity plate (2) to form an injection molding cavity, the middle parts of the top surfaces of the core plate (1) and the cavity plate (2) are vertically penetrated and provided with a main runner for guiding in plastic raw materials, injection cylinders (3) with C-shaped cross sections are vertically and upwards fixed at the top ends of the main runners of the core plate (1) and the cavity plate (2), the heating piece (4) is detachably assembled on the injection cylinders (3) formed by closing and assembling the core plate (1) and the cavity plate (2), the heating piece (4) comprises a screw cylinder (41) and a heat preservation piece (45), the screw cylinder (41) is assembled in the injection cylinders (3) formed by closing and assembling the core plate (1) and the cavity plate (2), an inner cylinder heating cavity is formed between the inner circumferential surfaces of the screw cylinder (41) and the outer circumferential surfaces of the screw cylinder (42), and the inner cylinder heating cavity is arranged between the inner circumferential surfaces of the screw cylinder (41), and the heating rod (42), and the heating rod (44) is fixedly filled in the heating cavity (41).
2. The single-hole injection mold with a built-in heating runner according to claim 1, wherein the inner circumference of the injection cylinder (3) is provided with an internal thread, and the internal thread of the injection cylinder (3) is assembled and connected with the thread of the screw cylinder (41).
3. The single-hole injection mold with the built-in heating runner according to claim 1, wherein a plurality of heat conducting net rings (43) are horizontally fixed on the outer circumferential surface of the inner cylinder (42) along the vertical direction, the top end of the inner cylinder (42) is vertically and downwards penetrated and provided with an oil filling hole (421), and a sealing plug is filled in the oil filling hole (421).
4. A single-hole injection mold with a built-in heating runner according to claim 1, wherein the heat insulating member (45) comprises a hollow cylinder (451), the hollow cylinder (451) is vertically sleeved outside the injection cylinder (3), and the top end of the hollow cylinder (451) is fixed at the top end of the screw cylinder (41).
5. A single-hole injection mold with a built-in heating runner according to claim 4, wherein insulation cotton (452) is fixed on the inner wall of the hollow cylinder (451).
6. The single-hole injection mold with the built-in heating runner according to claim 1, wherein the insert rods (11) are horizontally fixed on the vertical end surfaces on two sides of the core plate (1), the hole blocks (21) are vertically fixed on the vertical end surfaces on two sides of the cavity plate (2), and the insert rods (11) are slidably inserted into the hole blocks (21).
7. The single-hole injection mold with the built-in heating runner according to claim 6, wherein a vertical plate (12) is vertically fixed at the end part of the inserted rod (11) of the core plate (1), oil cylinders (22) are horizontally fixed on the vertical end surfaces of the two sides of the cavity plate (2), and the output ends of the oil cylinders (22) are connected to the vertical plate (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223566391.2U CN219133084U (en) | 2022-12-30 | 2022-12-30 | Single-hole injection mold with built-in heating runner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223566391.2U CN219133084U (en) | 2022-12-30 | 2022-12-30 | Single-hole injection mold with built-in heating runner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219133084U true CN219133084U (en) | 2023-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223566391.2U Active CN219133084U (en) | 2022-12-30 | 2022-12-30 | Single-hole injection mold with built-in heating runner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219133084U (en) |
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2022
- 2022-12-30 CN CN202223566391.2U patent/CN219133084U/en active Active
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