CN222407007U - A notebook shell cooling mechanism for injection molding shrinkage defects - Google Patents

Abstract

The utility model discloses a notebook computer shell cooling mechanism aiming at injection molding shrinkage cavity defects, which comprises a main body, wherein an injection molding chamber is formed in the upper end of the inside of the main body, an air cylinder is arranged at the upper end of the injection molding chamber, an upper die is arranged at the output end of the air cylinder, a lower die is arranged at the middle position of the lower end of the inside of the injection molding chamber, the notebook computer shell cooling mechanism further comprises a water cavity which is formed in the lower end of the inside of the main body, a first cooling cavity is formed in the inside of the lower die of the water cavity, and the first cooling cavity is connected with the water cavity through a water return pipe. The notebook shell cooling mechanism for the injection molding shrinkage cavity defect ensures that the lower die can keep relatively uniform temperature distribution in the whole cooling process, and the upper die can be cooled equally, so that the problem that shrinkage cavities are easily formed in the notebook shell due to overlarge temperature difference in the cooling process of the upper die and the lower die is avoided.

Description

Notebook shell cooling mechanism for injection molding shrinkage cavity defect

Technical Field

The utility model relates to the technical field of notebook shell production, in particular to a notebook shell cooling mechanism aiming at injection molding shrinkage cavity defects.

Background

The notebook computer is a small-sized personal computer which is convenient to carry. Compared with a desktop computer, the notebook computer is mainly different in portability and compactness, the notebook computer shell not only protects internal precise electronic elements, but also directly determines the appearance and durability of the product, and in order to manufacture the shell which is firm and attractive and meets the heat dissipation requirement, an injection molding technology is generally adopted, and a cooling mechanism can rapidly take away the heat on the surface of the shell, so that the shell is rapidly cooled to a stable state after molding.

The current chinese patent with publication number CN211807525U discloses an injection molding mould for notebook computer casing, which comprises a limit mechanism and a baffle, the left side of the top end of the limit mechanism is provided with a transmission mechanism, and the middle part of the top end of the limit mechanism is provided with a cooling mechanism, the outer wall of the top end of the cooling mechanism is connected with a lower mould, and the right side of the top end of the limit mechanism is fixed with a second threaded rod.

According to the scheme, although the device can cool the notebook computer shell, the device only cools the lower die, the temperature distribution of the upper die and the lower die is uneven, so that the cooling speed of a plastic melt in the die is inconsistent, the faster cooling speed of the lower die can cause the melt to be rapidly solidified in a local area to form shrinkage cavities, the existing requirements are not met, and a notebook computer shell cooling mechanism aiming at injection molding shrinkage cavity defects is provided.

Disclosure of utility model

The utility model aims to provide a notebook computer shell cooling mechanism aiming at injection molding shrinkage cavity defects, so as to solve the problem that shrinkage cavities are easy to form due to overlarge temperature difference when an upper die and a lower die of the notebook computer shell cooling mechanism are cooled.

The notebook computer shell cooling mechanism comprises a main body, wherein an injection molding chamber is arranged at the upper end of the inside of the main body, an air cylinder is arranged at the upper end of the injection molding chamber, an upper die is arranged at the output end of the air cylinder, and a lower die is arranged at the middle position of the lower end of the inside of the injection molding chamber;

The water cavity is formed at the lower end of the inside of the main body, a first cooling cavity is formed in the lower die of the water cavity, and the first cooling cavity is connected with the water cavity through a water return pipe;

The cooling device further comprises a second cooling cavity which is arranged in the upper die, and the upper end and the lower end in the second cooling cavity are provided with a plurality of metal fins which are distributed at equal intervals.

Preferably, two serpentine heat exchange tubes are arranged in the water cavity, the serpentine heat exchange tubes are connected through connecting pipes, and one serpentine heat exchange tube is connected with the injection molding chamber through an air inlet pipe.

Preferably, a fan is arranged on one side of the water cavity, and the fan is connected with the second cooling cavity and one of the serpentine heat exchange pipes through an air outlet pipe.

Preferably, a submersible pump is arranged at one side of the lower end of the inner part of the water cavity, and the submersible pump is connected with the first cooling cavity through a water inlet pipe.

Preferably, a refrigerating mechanism is arranged at the lower end of the water cavity.

Preferably, a rock wool plate is arranged outside the injection molding chamber.

Preferably, a sealing door is installed at one side of the front end of the main body.

Compared with the prior art, the utility model has the beneficial effects that:

1. According to the utility model, the first cooling cavity is formed in the lower die, the submersible pump can be started when cooling is performed after injection molding, the submersible pump can input cooling liquid in the water cavity into the first cooling cavity through the water inlet pipe, and the cooling liquid can reduce the temperature of the lower die when flowing in the first cooling cavity, so that the lower die can be rapidly cooled, and then the cooling liquid can enter the water cavity again through the water return pipe.

2. According to the utility model, the two snake-shaped heat exchange pipes are arranged in the water cavity, when the lower die is cooled, the fan can be started, the fan can suck the air in the injection molding chamber into the snake-shaped heat exchange pipes, the heat exchange is carried out between the snake-shaped heat exchange pipes and the cooling liquid, so that the air temperature can be reduced, then the cold air can be input into the second cooling cavity in the upper die, the metal fins arranged in the second cooling cavity have good heat conduction performance, and the low temperature of the cold air can be rapidly transferred to the surface of the upper die, so that the upper die can be cooled as well, and the problem that shrinkage holes are easily formed in a notebook shell due to overlarge temperature difference when the upper die and the lower die are cooled is avoided.

3. According to the utility model, the rock wool plate is arranged outside the injection molding chamber, and the sealing door can be closed when the injection molding chamber is cooled, so that the dissipation of cold air can be avoided, meanwhile, the rock wool plate is used as an excellent heat insulation material, the low heat conduction property of the rock wool plate effectively blocks the transmission of external heat to the inside of the injection molding chamber, so that the cooling effect is further enhanced, a closed and stable cooling environment is formed by the arrangement of the rock wool plate and the closing of the sealing door, and the condition that the local temperature of the upper die and the lower die is too high is effectively avoided by ensuring the stability of the cooling environment, so that the occurrence rate of shrinkage cavity is greatly reduced.

Drawings

FIG. 1 is a schematic front view of the internal structure of the present utility model;

FIG. 2 is a schematic elevational view of the overall structure of the present utility model;

FIG. 3 is a schematic top view of the internal structure of the present utility model;

fig. 4 is an enlarged view of a portion of the area a of fig. 1 in accordance with the present utility model.

In the figure, 1, a main body; 2, a sealing door, 3, an air cylinder, 4, an upper die, 5, a lower die, 6, a water cavity, 7, a refrigerating mechanism, 8, a first cooling cavity, 9, a submersible pump, 10, a water inlet pipe, 11, a water return pipe, 12, an air inlet pipe, 13, a serpentine heat exchange pipe, 14, a connecting pipe, 15, a fan, 16, an air outlet pipe, 17, a second cooling cavity, 18, metal fins, 19, a rock wool plate and 20, and an injection molding chamber.

Detailed Description

The following description of the embodiments of the present utility model 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 utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to FIGS. 1-4, the utility model provides a technical scheme that a notebook computer shell cooling mechanism for injection molding shrinkage defects comprises a main body 1, wherein an injection molding chamber 20 is arranged at the upper end of the inside of the main body 1, a cylinder 3 is arranged at the upper end of the injection molding chamber 20, an upper die 4 is arranged at the output end of the cylinder 3, and a lower die 5 is arranged at the middle position of the lower end of the inside of the injection molding chamber 20;

The water cooling device further comprises a water cavity 6 which is arranged at the lower end of the inside of the main body 1, a first cooling cavity 8 is arranged in the lower die 5 of the water cavity 6, and the first cooling cavity 8 is connected with the water cavity 6 through a water return pipe 11;

The mold further comprises a second cooling cavity 17 which is arranged in the upper mold 4, and a plurality of metal fins 18 which are distributed at equal intervals are arranged at the upper end and the lower end in the second cooling cavity 17.

When the novel cooling device is used, after injection molding of the notebook computer shell is completed, the sealing door 2 is closed, the submersible pump 9 is started, refrigerating fluid in the water cavity 6 is fed into the first cooling cavity 8 through the water inlet pipe 10 to cool the lower die 5, the circulating reflux of the refrigerating fluid to the water cavity 6 is ensured by the water return pipe 11, uniform temperature distribution of the lower die 5 is maintained, meanwhile, the fan 15 is started, air in the injection molding chamber 20 is sucked into the serpentine heat exchange pipe 13 by the air inlet pipe 12 to conduct heat exchange, the air temperature is reduced, then the air outlet pipe 16 conveys cold air to the second cooling cavity 17, the low temperature is rapidly transmitted to the surface of the upper die 4 through the metal fins 18, the cold air enters the injection molding chamber 20 through the vent holes again, synchronous cooling of the upper die 4 and the lower die 5 is realized, and the problem that shrinkage holes are easily formed by the notebook computer shell due to overlarge temperature difference during cooling of the upper die 4 and the lower die 5 is avoided.

Referring to fig. 1 and 3, two serpentine heat exchange tubes 13 are disposed in the water cavity 6, the serpentine heat exchange tubes 13 are connected through a connecting tube 14, one of the serpentine heat exchange tubes 13 is connected with the injection molding chamber 20 through an air inlet tube 12, the serpentine structure of the serpentine heat exchange tube 13 increases the contact area between air and refrigerating fluid, and improves the heat exchange efficiency, so that the air temperature is reduced more effectively, and sufficient cooling effect is provided for the upper die 4;

referring to fig. 1 and 3, a fan 15 is arranged at one side of the interior of the water cavity 6, the fan 15 is connected with the second cooling cavity 17 and one of the serpentine heat exchange tubes 13 through an air outlet pipe 16, the air flow in the serpentine heat exchange tubes 13 is accelerated by starting the fan 15, the heat exchange rate is improved, and meanwhile, the fact that cold air can be uniformly and rapidly conveyed to the second cooling cavity 17 is ensured, so that efficient cooling is provided for the upper die 4;

Referring to fig. 1 and 3, a submersible pump 9 is arranged at one side of the lower end of the inner part of the water cavity 6, the submersible pump 9 is connected with the first cooling cavity 8 through a water inlet pipe 10, the submersible pump 9 ensures that cooling liquid can continuously and stably flow into the first cooling cavity 8, a continuous and uniform cooling effect is provided for the lower die 5, and cooling efficiency is improved;

Referring to fig. 1, a refrigerating mechanism 7 is arranged at the lower end of the water cavity 6, and the refrigerating mechanism 7 ensures that the cooling liquid is always kept in a low-temperature state, thereby ensuring the continuity and stability of the cooling effect and improving the cooling efficiency;

Referring to fig. 1, a rock wool plate 19 is arranged outside an injection molding chamber 20, and the rock wool plate 19 has good heat insulation performance, can effectively block external heat from being transmitted to the inside of the injection molding chamber, maintains the stability of a cooling environment, and ensures cooling;

Referring to fig. 2, a sealing door 2 is installed at one side of the front end of the main body 1, and the sealing door 2 is closed to prevent the dissipation of cool air during the cooling process, thereby ensuring the sealing and stability of the cooling environment, avoiding the entry of external heat and pollutants, and ensuring the quality of the product and the smooth production.

Working principle: when in use, the injection molding mechanism of the notebook computer shell is carried out through the injection molding hole at the upper end of the upper mold 4, the sealing door 2 is closed after injection molding is finished, the submersible pump 9 is started, the submersible pump 9 can input the refrigerating fluid in the water cavity 6 into the first cooling cavity 8 through the water inlet pipe 10, the lower mold 5 is cooled, the cooling fluid can flow back into the water cavity 6 through the water return pipe 11, the heat of the lower mold 5 can be continuously taken away in the circulation process of the cooling fluid, so that the lower mold 5 can keep relatively uniform temperature distribution in the whole cooling process, the cooling effect of the refrigerating fluid is ensured by the refrigerating mechanism 7, the fan 15 is started when the lower mold 5 is cooled, the air inlet pipe 12 can suck the air in the injection molding chamber 20 into the serpentine heat exchange pipe 13, the air can exchange heat with the external cooling fluid when flowing through the inside of the serpentine heat exchange pipe 13, the air temperature can be reduced, the arrangement of the two serpentine heat exchange tubes 13 ensures the effect of air cooling, then cold air can be conveyed to the inside of the second cooling cavity 17 through the air outlet tube 16, the low temperature of the cold air can be quickly transferred to the surface of the upper mold 4 through the plurality of metal fins 18 arranged in the inside of the second cooling cavity 17, the cold air can enter the inside of the injection molding chamber 20 again through the vent hole at one side of the upper end of the second cooling cavity 17, thereby synchronously realizing the circulation flow of the cold air in the upper mold 4, synchronously cooling the upper mold 4 and the lower mold 5, avoiding the problem that shrinkage holes are easily formed in the notebook computer shell due to overlarge temperature difference when the upper mold 4 and the lower mold 5 are cooled, and avoiding the dissipation of the cold air due to the closing of the sealing door 2 when the cooling is carried out, the rock wool plate 19 effectively blocks the transfer of external heat to the inside of the injection molding chamber 20, the closure of the rock wool panel 19 and the sealing door 2 together form a closed, stable cooling environment, reducing the incidence of shrinkage cavity problems.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (7)

1. The utility model provides a notebook shell cooling body to shrinkage cavity defect moulds plastics, includes main part (1), injection molding chamber (20) have been seted up to the inside upper end of main part (1), the upper end of injection molding chamber (20) is provided with cylinder (3), the output of cylinder (3) is provided with mould (4), the intermediate position department of the inside lower extreme of injection molding chamber (20) is provided with bed die (5), its characterized in that:

The water cooling device further comprises a water cavity (6) which is arranged at the lower end of the inside of the main body (1), a first cooling cavity (8) is arranged in the lower die (5) of the water cavity (6), and the first cooling cavity (8) is connected with the water cavity (6) through a water return pipe (11);

the mold further comprises a second cooling cavity (17) which is arranged in the upper mold (4), and a plurality of metal fins (18) which are distributed at equal intervals are arranged at the upper end and the lower end of the second cooling cavity (17).

2. The cooling mechanism for the notebook computer shell aiming at the injection molding shrinkage cavity defect according to claim 1, wherein two serpentine heat exchange pipes (13) are arranged in the water cavity (6), the serpentine heat exchange pipes (13) are connected through connecting pipes (14), and one serpentine heat exchange pipe (13) is connected with an injection molding chamber (20) through an air inlet pipe (12).

3. The cooling mechanism for the notebook computer shell aiming at the injection molding shrinkage cavity defect according to claim 2, wherein a fan (15) is arranged on one side of the interior of the water cavity (6), and the fan (15) is connected with the second cooling cavity (17) and one of the serpentine heat exchange pipes (13) through an air outlet pipe (16).

4. The cooling mechanism for the notebook computer shell aiming at the injection molding shrinkage cavity defect according to claim 1, wherein a submersible pump (9) is arranged on one side of the lower end of the inner part of the water cavity (6), and the submersible pump (9) is connected with the first cooling cavity (8) through a water inlet pipe (10).

5. The cooling mechanism for the notebook computer casing aiming at the injection molding shrinkage cavity defect according to claim 1, wherein a refrigerating mechanism (7) is arranged at the lower end of the water cavity (6).

6. A cooling mechanism for notebook housings for injection molding shrinkage defects according to claim 1, characterized in that a rock wool plate (19) is arranged outside the injection molding chamber (20).

7. The cooling mechanism for the notebook computer casing aiming at the injection molding shrinkage cavity defect according to claim 1, wherein a sealing door (2) is arranged on one side of the front end of the main body (1).