CN218906196U

CN218906196U - Forced demoulding mechanism of injection mould

Info

Publication number: CN218906196U
Application number: CN202223017185.6U
Authority: CN
Inventors: 郭宇; 林德明
Original assignee: Ningbo Fourstar Tooling & Plastic Pty Ltd
Current assignee: Ningbo Fourstar Tooling & Plastic Pty Ltd
Priority date: 2022-11-14
Filing date: 2022-11-14
Publication date: 2023-04-25
Anticipated expiration: 2032-11-14

Abstract

The utility model belongs to the technical field of molds, and particularly relates to a forced demolding mechanism of an injection mold, which comprises a lower mold, wherein two mold cores are arranged on the lower mold, a demolding module is connected in each mold core in a sliding manner, a cooling liquid tank is arranged in the lower mold, a water inlet channel and a water return channel are fixedly connected in the cooling liquid tank, the water inlet channel and the water return channel penetrate through the lower mold and are connected into a demolding block, corrugated pipes are arranged on the water inlet channel and the water return channel, a demolding mechanism is arranged in each mold core, a submersible pump is arranged in the cooling liquid tank, and the output end of the submersible pump is fixedly connected with the water inlet channel. According to the utility model, the movable demoulding module is arranged in the mould core, and the demoulding mechanism is arranged at the bottom of the demoulding module, so that the demoulding mechanism can be used for lifting the demoulding module, and after a product is formed and attached to the mould core, demoulding can be performed, and the blanking is facilitated.

Description

Forced demoulding mechanism of injection mould

Technical Field

The utility model relates to the technical field of molds, in particular to a forced demolding mechanism of an injection mold.

Background

Many plastic accessories are arranged on an automobile, and for color uniformity, the plastic accessories are basically produced by adopting a single-color injection molding mode, for example, the utility model patent with the publication number of CN214605632U discloses a single-color injection mold for an automobile instrument panel trim strip, which comprises a rear mold and a front mold, wherein the rear mold is arranged opposite to the front mold, and a front mold cavity is arranged on the opposite side of the front mold to the rear mold. The rear mould is provided with a rear mould core corresponding to the cavity, and the front mould cavity and the rear mould core are matched to form an injection cavity. The front mold is provided with a plurality of slider heads, all the slider heads are movably arranged at the edge of the front mold cavity, and one end of each slider head, which is close to the front mold cavity, can be detected to the inner side of the edge of the front mold cavity. The back mold is provided with clamping grooves which are equal in number and corresponding to the sliding block heads in position, and in the mold closing process, the back mold drives the sliding block heads to retreat to the outer side of the edge of the front mold cavity. According to the utility model, the sliding block head is arranged on the outer side of the cavity of the front die, the diaphragm is positioned in the die assembly process, the diaphragm is effectively prevented from being separated from the cavity, and the diaphragm is prevented from wrinkling and deforming during the glue feeding process by arranging the glue feeding through channel and the hidden gate in the rear die, so that the product qualification rate is ensured.

When the existing injection mold is used for injection molding of products, the products need to stand for a certain time, the cooling molding speed is low, and after the products are molded, the products can be attached to the mold cores of the mold due to thermal expansion and cold contraction, so that demolding is inconvenient. Therefore, improvements are needed.

Disclosure of Invention

The utility model aims to provide a forced demoulding mechanism of an injection mould, which solves the problems that when the existing injection mould is used for carrying out injection moulding on a product, the product needs to stand for a certain time, the cooling forming speed is low, and after the product is formed, the product is attached to a mould core of the mould due to thermal expansion and cold contraction, so that demoulding is inconvenient.

In order to achieve the above purpose, the present utility model provides the following technical solutions: forced demoulding mechanism of injection mold, including the lower mould, be provided with two mold cores on the lower mould, every sliding connection has the demoulding module in the mold core, be provided with the cooling liquid case in the lower mould, fixedly connected with advances water route and return water path in the cooling liquid case, advance water route and return water path all through the lower mould and insert in the drawing of patterns piece, advance water route and return water path on all be provided with the bellows, be provided with demoulding mechanism in the mold core, be provided with the immersible pump in the cooling liquid case, the output and the water inlet path fixed connection of immersible pump.

Preferably, the bottom of cooling liquid tank is provided with the heat conduction piece, heat conduction piece and lower mould fixed connection, the bottom of heat conduction piece is provided with the semiconductor refrigeration piece. Through the design of the heat conducting block, the heat exchange between the semiconductor refrigerating sheet and the cooling water can be realized.

Preferably, the demoulding mechanism comprises a motor, a connecting sleeve, a threaded rod, a thread bush, a guide bush, a fixed square shell and balls, wherein the motor is arranged in the mould core, the connecting sleeve is arranged on an output shaft of the motor through a bolt, the threaded rod is fixedly connected to the connecting sleeve, the thread bush is connected to the outer portion of the threaded rod through threads, the guide bush is fixedly connected to the outer portion of the thread bush, and the guide bush is fixedly connected with the demoulding block. Through the design of demoulding mechanism, the drawing of patterns of the product of being convenient for.

Preferably, the die core is internally fixedly connected with a fixed square shell, and the fixed square shell is in sliding sleeve joint with the guide sleeve. Through the design of fixed square shell, have the guide effect to the removal of uide bushing.

Preferably, the fixed square shell is provided with balls, and the balls are in contact with the inner wall of the guide sleeve. Through the design of ball, be convenient for the relative slip between uide bushing and the fixed square shell.

Preferably, the mold core is slidably connected with a positioning pin, the positioning pin is slidably connected with the demolding block, a spring is arranged in the mold core, one end of the spring is fixedly connected with the positioning pin, and the other end of the spring is fixedly connected with the inner surface of the mold core. Through the design of spring, have the effect of supplementary reset to the locating pin.

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

1. according to the utility model, the movable demoulding module is arranged in the mould core, and the demoulding mechanism is arranged at the bottom of the demoulding module, so that the demoulding mechanism can be used for lifting the demoulding module, and after a product is formed and attached to the mould core, demoulding can be performed, and the blanking is facilitated.

2. According to the utility model, the cooling liquid tank is arranged in the lower die, the water inlet channel and the water return channel are arranged on the cooling liquid tank and are connected into the demoulding block, the submersible pump is arranged in the cooling liquid tank, the output end of the submersible pump is connected with the water inlet channel, then the guide block is arranged at the bottom of the cooling liquid tank, and the semiconductor refrigerating sheet is arranged at the bottom of the heat conducting block, so that cooling water in the cooling liquid tank can be kept at a relatively low temperature through the semiconductor refrigerating sheet, and then the cooling water is circularly added into the demoulding block through the submersible pump, so that the forming speed of a product can be well improved.

Drawings

FIG. 1 is a perspective view of the overall structure of the present utility model;

FIG. 2 is a front cross-sectional view of the partial structure of FIG. 1 of the present utility model;

FIG. 3 is an enlarged view of the stripping mechanism of FIG. 2 in accordance with the present utility model;

fig. 4 is an enlarged view of the structure of the portion a of fig. 2 according to the present utility model.

In the figure: 1. a lower die; 2. a mold core; 3. removing the module; 4. a cooling liquid tank; 5. submersible pump; 6. a water inlet channel; 7. a water return path; 8. a demoulding mechanism; 81. a motor; 82. connecting sleeves; 83. a threaded rod; 84. a thread sleeve; 85. a guide sleeve; 86. fixing the square shell; 87. a ball; 9. a bellows; 10. a heat conduction block; 11. a semiconductor refrigeration sheet; 12. a positioning pin; 13. and (3) a spring.

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 fig. 1-3, the forced demolding mechanism of the injection mold comprises a lower mold 1, two mold cores 2 are arranged on the lower mold 1, a demolding block 3 is slidably connected in each mold core 2, a cooling liquid tank 4 is arranged in the lower mold 1, a water inlet channel 6 and a water return channel 7 are fixedly connected in the cooling liquid tank 4, the water inlet channel 6 and the water return channel 7 penetrate through the lower mold 1 and are connected into the demolding block 3, bellows 9 are arranged on the water inlet channel 6 and the water return channel 7, a demolding mechanism 8 is arranged in each mold core 2, a submersible pump 5 is arranged in the cooling liquid tank 4, and the output end of the submersible pump 5 is fixedly connected with the water inlet channel 6.

Referring to fig. 1, 2 and 4, a heat conducting block 10 is arranged at the bottom of the cooling liquid tank 4, the heat conducting block 10 is fixedly connected with the lower die 1, a semiconductor refrigerating sheet 11 is arranged at the bottom of the heat conducting block 10, heat exchange between the semiconductor refrigerating sheet 11 and cooling water can be realized through the design of the heat conducting block 10, a positioning pin 12 is slidably connected in the die core 2, the positioning pin 12 is slidably connected with the stripping block 3, a spring 13 is arranged in the die core 2, one end of the spring 13 is fixedly connected with the positioning pin 12, and the other end of the spring 13 is fixedly connected with the inner surface of the die core 2. The spring 13 has an auxiliary resetting function on the positioning pin 12.

Referring to fig. 2 and 4, the demolding mechanism 8 comprises a motor 81, a connecting sleeve 82, a threaded rod 83, a threaded sleeve 84, a guide sleeve 85, a fixed square shell 86 and balls 87, wherein the motor 81 is arranged in the mold core 2, the connecting sleeve 82 is mounted on an output shaft of the motor 81 through bolts, the threaded rod 83 is fixedly connected to the connecting sleeve 82, the threaded sleeve 84 is connected to the outside of the threaded rod 83 through threads, the guide sleeve 85 is fixedly connected to the demolding block 3, the fixed square shell 86 is fixedly connected to the mold core 2, the fixed square shell 86 is in sliding sleeve connection with the guide sleeve 85, the balls 87 are arranged on the fixed square shell 86 with a guiding function for the movement of the guide sleeve 85 through the design of the fixed square shell 86, the balls 87 are in contact with the inner wall of the guide sleeve 85, relative sliding between the guide sleeve 85 and the fixed square shell 86 is facilitated through the design of the balls 87, and demolding of the demolding mechanism 8 is facilitated.

The specific implementation process of the utility model is as follows: when the cooling device is used, firstly, the semiconductor refrigerating sheet 11 is used for refrigerating, then the heat conduction block 10 is used for carrying out heat exchange with cooling water in the cooling liquid tank 4, so that the cooling water is kept at a lower temperature, then the upper die and the lower die 1 are matched, then a product is injected into the die core 2 between the upper die and the lower die, at the moment, the submersible pump 5 is started, the submersible pump 5 is used for adding the cooling water into the demoulding block 3 through the water inlet channel 6, then the cooling water flows back into the cooling liquid tank 4 from the water return channel 7, heat absorbed by the demoulding block 3 is taken away, and then the product is cooled more quickly, so that the forming speed of the product is improved;

then, the motor 81 is started, the motor 81 drives the threaded rod 83 to rotate through the connecting sleeve 82, the threaded sleeve 84 generates displacement in the vertical direction through the threaded movement between the threaded sleeve 84 and the threaded rod 83, then the threaded sleeve 84 drives the guide sleeve 85 to slide outside the fixed square shell 86, the demolding block 3 moves upwards, and the demolding block 3 jacks up a product from the mold core 2, so that the purpose of facilitating demolding is realized;

in addition, when the demoulding block 3 ascends, the positioning pin 12 can slide in the mould core 2 by the reaction force of the demoulding block 3, and can compress the spring 13 while sliding, and when the demoulding block 3 resets, the positioning pin 12 is also pushed back by the spring 13 and resets in a corresponding groove on the demoulding block 3, so that the surface of the demoulding block 3 is ensured to be consistent with the mould core 2, and the quality of products is ensured.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Forced demolding mechanism of injection mold, including lower mould (1), its characterized in that: be provided with two mold cores (2) on lower mould (1), every sliding connection has drawing of patterns piece (3) in mold core (2), be provided with cooling liquid case (4) in lower mould (1), fixedly connected with inlet channel (6) and return water way (7) in cooling liquid case (4), inlet channel (6) and return water way (7) all run through lower mould (1) and insert drawing of patterns piece (3), all be provided with bellows (9) on inlet channel (6) and return water way (7), be provided with demoulding mechanism (8) in mold core (2), be provided with immersible pump (5) in cooling liquid case (4), the output and inlet channel (6) fixed connection of immersible pump (5).

2. The forced demolding mechanism of an injection mold according to claim 1, characterized in that: the bottom of cooling liquid tank (4) is provided with heat conduction piece (10), heat conduction piece (10) and lower mould (1) fixed connection, the bottom of heat conduction piece (10) is provided with semiconductor refrigeration piece (11).

3. The forced demolding mechanism of an injection mold according to claim 1, characterized in that: the demolding mechanism (8) comprises a motor (81), a connecting sleeve (82), a threaded rod (83), a threaded sleeve (84), a guide sleeve (85), a fixed square shell (86) and balls (87), wherein the motor (81) is arranged in the mold core (2), the connecting sleeve (82) is mounted on an output shaft of the motor (81) through a bolt, the threaded rod (83) is fixedly connected to the connecting sleeve (82), the threaded sleeve (84) is connected to the outer portion of the threaded rod (83) through threads, the guide sleeve (85) is fixedly connected to the outer portion of the threaded sleeve (84), and the guide sleeve (85) is fixedly connected with the demolding block (3).

4. A forced demolding mechanism for an injection mold according to claim 3, characterized in that: the die core (2) is internally and fixedly connected with a fixed square shell (86), and the fixed square shell (86) is in sliding sleeve joint with the guide sleeve (85).

5. A forced demolding mechanism for an injection mold according to claim 3, characterized in that: the fixed square shell (86) is provided with a ball (87), and the ball (87) is contacted with the inner wall of the guide sleeve (85).

6. The forced demolding mechanism of an injection mold according to claim 1, characterized in that: the mold core (2) is connected with a locating pin (12) in a sliding mode, the locating pin (12) is connected with the demolding block (3) in a sliding mode, a spring (13) is arranged in the mold core (2), one end of the spring (13) is fixedly connected with the locating pin (12), and the other end of the spring (13) is fixedly connected to the inner surface of the mold core (2).