CN113815209A - Umbrella-shaped cooling water path insert for injection mold - Google Patents
Umbrella-shaped cooling water path insert for injection mold Download PDFInfo
- Publication number
- CN113815209A CN113815209A CN202110981089.4A CN202110981089A CN113815209A CN 113815209 A CN113815209 A CN 113815209A CN 202110981089 A CN202110981089 A CN 202110981089A CN 113815209 A CN113815209 A CN 113815209A
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- water
- branch
- insert
- umbrella
- injection mold
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- 239000000498 cooling water Substances 0.000 title claims abstract description 29
- 238000002347 injection Methods 0.000 title claims abstract description 20
- 239000007924 injection Substances 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 132
- 238000001816 cooling Methods 0.000 claims abstract description 20
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000003292 glue Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- DMFGNRRURHSENX-UHFFFAOYSA-N beryllium copper Chemical compound [Be].[Cu] DMFGNRRURHSENX-UHFFFAOYSA-N 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011540 sensing material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
Classifications
-
- 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
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses an umbrella-shaped cooling water path insert for an injection mold, which comprises: an insert body; the water chute is positioned in the middle of the middle; the two branch pipes are uniformly distributed along the circumferential direction and are provided with an inlet facing the water chute and two outlets back to the water chute; the two ends of the first branch are respectively connected with the water chute and the inlets of the two branch pipes, and each first branch is uniformly distributed along the radial direction of the same circumference; and one end of the second branch is connected with the outlet of the branch pipe, and the other end of the second branch extends outwards to the outside of the insert and is uniformly distributed along the radial direction of the same circumference. According to the invention, through the umbrella-shaped water path design, the cooling water paths are uniformly distributed along the circumferential direction, so that the cooling effect can be really balanced, and meanwhile, the insert and the mold can be made of materials with different heat-conducting properties due to the fact that the insert is separable from the mold, so that the cost is saved.
Description
Technical Field
The invention relates to the field of molds, in particular to an insert of an umbrella-shaped cooling water path for an injection mold.
Background
In injection molds, the cooling system is a core part of the injection mold and has a significant influence on the life of the mold, the production efficiency and the quality of the injection molded article. The influence of the water channel on the quality of the formed product is mainly shown in the process of forming the product and is used for controlling the temperature of the mould, and the change of the temperature of the mould has influence on shrinkage rate deformation, dimensional stability, mechanical strength, stress cracking, surface quality and the like of the product. Among the current technical scheme, the water route of mould is not even enough to the cooling of finished product at the during operation, perhaps too complicated with the water route design in order to reach the purpose of even cooling.
For example, the mold insert with inclined alternating water path structure and the manufacturing method thereof disclosed in the chinese patent document, the publication number is CN102909841B, the mold insert comprises an insert body, the insert body has a conical section with a circular bottom surface, the outer wall of the insert body is a conical surface, a plurality of sets of inclined alternating water path structures are arranged inside the insert body, each set of inclined alternating water path structures comprises a left inclined water path and a right inclined water path, the water paths respectively penetrate from the circular bottom surface of the insert body and extend and intersect in the insert body upwards in a straight line, the included angle between the axis of the left inclined water path and the circular bottom surface is equal to the included angle between the axis of the right inclined water path and the circular bottom surface, the plurality of sets of inclined alternating water path structures are uniformly distributed in the insert body along the circumferential direction of the same circumference, when the mold insert is used for producing a cylindrical cup-shaped transparent plastic product, the cooling effect of the upper and lower parts of the product can be more balanced, however, the pipelines are complicated to arrange, the cooling water channels are communicated with each other, so that the cooling effect of the rear section of the water channel is poorer than that of the front section, and the balance of the cooling effect is still deficient.
When the die is cooled, different parts have different cooling requirements, the best cooling effect is often needed near the glue inlet, and the whole cooling water path is often made of materials beneficial to heat dissipation, such as beryllium copper, so that the cost is greatly increased.
For example, the "metal mold insert with a novel water path structure" disclosed in the chinese patent literature has a publication number CN211074367U, and includes an insert body, at least one cavity is provided in the insert body, an insert molding cavity is erected in the cavity, an outer wall of the insert molding cavity and an inner wall of the cavity are arranged at an interval, an annular space between the insert molding cavity and the cavity constitutes a cooling water path cavity, so as to overcome the problems of small contact area of a cooling surface, uneven cooling effect and low cooling efficiency existing in the prior art, and adopt metal to manufacture the mold insert, thereby further improving the cooling effect, but since the whole mold insert is made of metal, the use cost is increased.
Disclosure of Invention
In order to solve the problems in the background art, the invention provides the separable cooling water path, and by designing the insert of the cooling water path channel, the structure of the water path is more reasonable, and the cooling effect is more balanced.
The invention is realized by the following technical scheme: an umbrella cooling water path insert for an injection mold, comprising: an insert body; the water guide groove is positioned in the middle of the insert body, and the notch of the water guide groove faces downwards to form a water inlet of the insert body; the two branch pipes are the same and are uniformly distributed along the circumferential direction by taking the water chute as a center, and each two branch pipe is provided with an inlet facing the water chute and two outlets back to the water chute; the first branches correspond to the inlets of the branch pipes one by one, one end of each first branch is connected with the water chute, and the other end of each first branch is connected with the inlet of the corresponding branch pipe; and the second branch is in one-to-one correspondence with the outlets of the branch pipes, one end of the second branch is connected with the outlet corresponding to the branch pipe, and the other end of the second branch extends outwards to the outside of the insert.
When the water distributor is used, external cold water is connected with the water inlet, and the cold water enters the water inlet along the vertical direction and then passes through the water guide groove in the shape of the hemispherical surface, so that the cold water can be uniformly distributed to each first branch; the second branches are uniformly distributed along the radial direction of the same circumference, the outlets of the branch pipes are symmetrically arranged, cold water enters the branch pipes through the first branches and is uniformly divided into two parts to be discharged out of the insert along the second branch pipes, and the cold water enters other water ways in the mold and continues to cool the mold. The water guide groove in the shape of the hemispherical surface and the symmetrically arranged branch pipes can evenly divide cold water entering from the water inlet into a plurality of cooling water paths, and each cooling water path is evenly distributed along the same circumference, so that the cooling effect can be really balanced, the density of the first branch around the water guide groove can be reduced, the structural strength is improved, and the production difficulty is reduced; the insert body is positioned near the glue inlet and can be separated from the mold, so that a material with high heat conductivity can be independently adopted, and compared with the manufacturing of the whole mold by using a material with high heat conductivity, the cost is saved.
Preferably, the water chute is in a hemispherical shape protruding upwards, a spherical water control ball is arranged in the water chute, the top of the water control ball is connected with the top of the inner wall of the water chute through a connecting wire, a plurality of temperature sensing assemblies are uniformly distributed on the periphery of the water control ball, and the temperature sensing assemblies are connected with the water control ball and the chute wall of the water chute. When the temperature control device is not in operation, the temperature controller is kept in the water guide groove through the connecting line, the temperature sensing assemblies are obviously stretched along with the change of ambient temperature in an operating state, when the temperature of the position corresponding to a certain temperature sensing assembly is higher than that of other positions, the length of the temperature sensing assembly is increased, and the water control ball is pushed to be far away from the temperature sensing assembly, so that a cold water channel leading to the position is larger than that of other positions, namely more cold water flows to a first branch near the direction of the temperature sensing assembly, and the temperature balance of each flowing direction is kept.
Preferably, the temperature sensing assembly comprises a temperature sensing bag and a spring, one end of the temperature sensing bag is connected with the water control ball, the other end of the temperature sensing bag is connected with the wall of the water guide groove through the spring, when the surrounding temperature of the temperature sensing bag rises, the thermosensitive material in the temperature sensing bag is heated to generate solid-liquid phase change and expand, the ejector rod is pushed to generate power and stroke, and therefore the water control ball is pushed, and the temperature sensing assembly on the low-temperature side can be compressed more easily due to the arrangement of the spring.
Preferably, the water chute is a hemispherical shape protruding upwards, so that water can be more uniformly guided to each direction after entering the water chute from the water inlet, and the power loss of cold water is reduced.
Preferably, each first branch is uniformly distributed along the radial direction of the same circumference, and each first branch is uniformly distributed along the radial direction of the same circumference, so that cold water uniformly flows to the outside of the insert body under the condition of balanced peripheral temperature.
Preferably, the cross-sectional area of the first branch is twice that of the second branch, so that the flow speed of the cold water is more stable when the cold water flows.
Preferably, the shape of the branch pipe is a sector with the circle center being the center of the water chute, cold water can be guided to flow to outlets on two sides of the branch pipe, and kinetic energy loss in the cold water flowing process is reduced.
Preferably, four corners of the fan-shaped shape of the two branch pipes are rounded, so that cold water can be discharged from the outlet in time.
Preferably, the umbrella-shaped cooling water path insert for the injection mold is provided with a plurality of cylindrical air valves which vertically penetrate through the whole insert in a gap of the second branch, and the demolding can be assisted by inward blowing.
Preferably, the umbrella-shaped cooling water path insert for the injection mold is provided with a plurality of screw holes with downward openings in the gap of the second branch, and the screw holes are used for matching with screws to install the insert into the mold.
Therefore, the invention has the following beneficial effects: through the umbrella-shaped water path design, the cooling water paths are uniformly distributed along the circumferential direction, so that the cooling effect can be really balanced; the density of the first branch circuit around the water guide groove is reduced through the arrangement of the branch pipes, the structural strength is improved, and the production difficulty is reduced.
Drawings
FIG. 1 is a schematic front view of a first embodiment of the present invention;
FIG. 2 is a schematic view of an embodiment of the present invention with a waterway structure;
FIG. 3 is a perspective view of a first embodiment of the present invention;
FIG. 4 is a schematic side view of a first embodiment of the present invention;
FIG. 5 is a schematic front view of a second embodiment of the present invention;
FIG. 6 is a schematic front view of a third embodiment of the present invention;
FIG. 7 is a cross-sectional view taken in the direction B-B of the insert of FIG. 6;
fig. 8 is an enlarged schematic view at C of fig. 7.
In the figure: the temperature-sensing water-saving device comprises a water guide groove 1, a hemispherical surface 11, a water inlet 12, a branch pipe 2, an inlet 21, an outlet 22, a first branch 3, a second branch 4, an air valve 5, a screw hole 6, a water-controlling ball 7, a temperature-sensing assembly 8, a temperature-sensing bulb 81 and a spring 82.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the first embodiment, as shown in fig. 1 to 4, an umbrella-shaped cooling water path insert for an injection mold is provided, in which an insert body is in a shape of a circular cake, a water chute 1 is arranged in the middle of the insert body, the water chute is in a shape of a semicircle protruding upwards, and a water inlet 12 is formed at the notch of the water chute downwards; the two branch pipes 2 are provided with six same branch pipes, are uniformly distributed along the circumferential direction by taking the water chute 1 as a center, and each two branch pipe 2 is provided with an inlet 21 facing the water chute 1 and two outlets 22 back to the water chute; the two ends of the first branch 3 are respectively connected with the water chute 1 and the inlets 21 of the two branch pipes, and the six inlets are uniformly distributed along the radial direction of the same circumference; the number of the second branches 4 is twelve, the two branches are identical to each other, one end of each second branch 4 is connected with the outlet 22 of the branch pipe 2, the other end of each second branch extends outwards to the outside of the insert body, and each second branch is uniformly distributed along the radial direction of the same circumference.
When the water distributor is used, external cold water is connected with the water inlet, and the cold water enters the water inlet along the vertical direction and then passes through the water guide groove in the shape of the hemispherical surface, so that the cold water can be uniformly distributed to the six first branches; the second branches are uniformly distributed along the radial direction of the same circumference, the outlets of the branch pipes are symmetrically arranged, cold water enters the branch pipes through the first branches and is uniformly divided into two parts to be discharged out of the insert along the second branch pipes, and the cold water enters other water ways in the mold and continues to cool the mold. The water guide groove in the shape of the hemispherical surface and the symmetrically arranged branch pipes can evenly divide cold water entering from the water inlet into twelve cooling water paths, and each cooling water path is evenly distributed along the same circumference, so that the cooling effect can be really balanced, the number of the first branch paths around the water guide groove can be reduced by half, the manufacturing difficulty is reduced, and the structural stability is improved; the mold insert body is located near the glue inlet and is separable from the mold, so that materials with high heat conductivity can be independently adopted, the cost is saved compared with the mode that the whole mold is made of materials with high heat conductivity, and the processing difficulty is reduced. The upper parts of the water chute 1 and the branch pipes are open, and the water chute and the branch pipes are matched with a mould to form a closed pipeline after being installed in the mould.
The sectional area of the first branch is twice that of the second branch, so that the flow speed is more stable when cold water flows.
The shape of the branch pipe is a sector taking the center of the water chute as the center of a circle, cold water can be guided to flow to outlets on two sides of the branch pipe, and kinetic energy loss in the cold water flowing process is reduced.
Four corners of the fan-shaped shape of the two branch pipes 2 are set to be round corners, so that cold water can be conveniently discharged from an outlet in time.
The umbrella-shaped cooling water path insert for the injection mold is provided with a plurality of cylindrical air valves 5 which vertically penetrate through the whole insert in the gap of the second branch, and the demolding can be assisted by inward blowing.
The umbrella-shaped cooling water path insert for the injection mold is provided with a plurality of screw holes 6 with downward orifices in the gap of the second branch, and is used for being matched with screws to install the insert into the mold.
In the second embodiment, as shown in fig. 5, eight branch pipes 2, eight first branches and sixteen second branches are uniformly arranged along the circumference, and the other arrangements are the same as those in the first embodiment, so that the cooling water paths can be distributed more densely by the added second branches, and the cooling efficiency is improved.
In the third embodiment, as shown in fig. 6, on the basis of the first embodiment, a glue inlet is arranged in the middle of the other side of the water chute on the surface of the insert body, a spherical water control ball 7 is arranged in the water chute, the top of the water control ball is connected with the top of the inner wall of the water chute 1 through a connecting line, six temperature sensing components are uniformly distributed around the water control ball, the temperature sensing components are connected with the water control ball and the wall of the water chute, when the temperature controller is not in operation, the temperature controller is kept in the water chute through the connecting line, when the temperature sensing components are in operation, the temperature sensing components stretch out and draw back obviously along with the change of ambient temperature, when the heat in each direction of the glue inlet and the mold main body is unbalanced due to unbalanced speed or flow rate of raw materials flowing to each flow channel or other factors during glue inlet, when the temperature in the direction corresponding to a certain temperature sensing component 8 is higher than that in other directions, the length of the temperature sensing components is increased to push the water control ball away from the temperature sensing components, the cold water passage to this orientation will be larger than in the other orientations, i.e. more cold water flows to the first branch near the direction of the temperature sensing assembly, to keep the temperature of each flow direction balanced.
The temperature sensing assembly comprises a temperature sensing bag 81 and a spring 82, as shown in fig. 7 and 8, one end of the temperature sensing bag 81 is connected with the water control ball 7, the other end of the temperature sensing bag is connected with the wall of the water chute through the spring 82, when the surrounding temperature of the temperature sensing bag rises, the temperature sensing material (such as temperature sensing wax) in the temperature sensing bag is heated to generate solid-liquid phase change and expand, the ejector rod is pushed to generate power and stroke, and therefore the water control ball is pushed, and the temperature sensing assembly on the low temperature side can be compressed more easily due to the arrangement of the spring.
Claims (9)
1. An umbrella cooling water path insert for an injection mold, comprising:
an insert body;
the water guide groove is positioned in the middle of the insert body, and the notch of the water guide groove faces downwards to form a water inlet of the insert body;
the two branch pipes are the same and are uniformly distributed along the circumferential direction by taking the water chute as a center, and each two branch pipe is provided with an inlet facing the water chute and two outlets back to the water chute;
the first branches correspond to the inlets of the branch pipes one by one, one end of each first branch is connected with the water chute, and the other end of each first branch is connected with the inlet of the corresponding branch pipe;
and the second branch is in one-to-one correspondence with the outlets of the branch pipes, one end of the second branch is connected with the outlet corresponding to the branch pipe, and the other end of the second branch extends outwards to the outside of the insert.
2. The umbrella-shaped cooling water path insert for an injection mold according to claim 1, wherein: the water guide groove is of a hemispherical shape protruding upwards, a spherical water control ball is arranged in the water guide groove, the top of the water control ball is connected with the top of the inner wall of the water guide groove through a connecting line, a plurality of temperature sensing assemblies are uniformly distributed on the periphery of the water control ball, and the temperature sensing assemblies are connected with the water control ball and the groove wall of the water guide groove.
3. The umbrella-shaped cooling water path insert for an injection mold of claim 2, wherein: the temperature sensing assembly comprises a temperature sensing bag and a spring, one end of the temperature sensing bag is connected with the water control ball, and the other end of the temperature sensing bag is connected with the wall of the water guide groove through the spring.
4. The umbrella-shaped cooling water path insert for an injection mold according to claim 1, wherein: the water chute is in a hemispherical shape protruding upwards.
5. The umbrella-shaped cooling waterway insert of claim 1 or 2, wherein: each first branch is uniformly distributed along the radial direction of the same circumference, and each second branch is uniformly distributed along the radial direction of the same circumference.
6. The umbrella-shaped cooling water path insert for an injection mold according to claim 1, wherein: the first leg has a cross-sectional area twice that of the second leg.
7. The umbrella-shaped cooling waterway insert of claim 1 or 2, wherein: the shape of the branch pipe is a sector taking the center of the water chute as the center of a circle.
8. The umbrella-shaped cooling water path insert for an injection mold according to claim 3, wherein: four corners of the fan-shaped shape of the two branch pipes are set to be round corners.
9. The umbrella-shaped cooling water path insert for the injection mold according to claim 1 or 2, wherein a plurality of cylindrical air gates vertically penetrating the whole insert are arranged in the gap of the second branch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110981089.4A CN113815209B (en) | 2021-08-25 | 2021-08-25 | Umbrella-shaped cooling waterway insert for injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110981089.4A CN113815209B (en) | 2021-08-25 | 2021-08-25 | Umbrella-shaped cooling waterway insert for injection mold |
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| Publication Number | Publication Date |
|---|---|
| CN113815209A true CN113815209A (en) | 2021-12-21 |
| CN113815209B CN113815209B (en) | 2024-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110981089.4A Active CN113815209B (en) | 2021-08-25 | 2021-08-25 | Umbrella-shaped cooling waterway insert for injection mold |
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2021
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| Publication number | Publication date |
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| CN113815209B (en) | 2024-02-09 |
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