CN220562101U

CN220562101U - Injection mold's extension ejection stroke device

Info

Publication number: CN220562101U
Application number: CN202321985086.9U
Authority: CN
Inventors: 卜伟; 石磊; 刘国凯
Original assignee: Kunshan Dongshen Plastic Technology Co ltd
Current assignee: Kunshan Dongshen Plastic Technology Co ltd
Priority date: 2023-07-26
Filing date: 2023-07-26
Publication date: 2024-03-08
Anticipated expiration: 2033-07-26

Abstract

The utility model relates to the technical field of injection molds and discloses an extension ejection stroke device of an injection mold, which comprises an injection bottom mold, an injection top arranged at the upper part of the injection bottom mold, a rectangular-distributed limit rod arranged at the periphery of the lower end of the injection top, a limit hole corresponding to the limit rod arranged at the periphery of the upper end of the injection bottom mold, and a molding bottom groove arranged at the upper part of the injection bottom mold, wherein an exhaust hole is formed in the central part of a lifting base and communicated with a cavity of a heat dissipation part, and a lifting mechanism is arranged at the bottom of the injection bottom mold and used for driving the lifting base to move up and down so as to complete the upward lifting action of an injection molding part from the cavity of the molding bottom groove. Compared with a hydraulic device and a connecting rod which are arranged in a comparison file, the automatic lifting device is driven by a motor, the lifting mechanism is used for completing the automatic lifting of the lifting base, the whole device is positioned at a position exposed below the injection molding bottom die, parts and structures are more convenient to be simplified, and the maintenance difficulty is reduced.

Description

Injection mold's extension ejection stroke device

Technical Field

The utility model relates to the technical field of injection molds, in particular to an ejection stroke extension device of an injection mold.

Background

Injection molding is a method for producing and shaping industrial products. Products are generally molded using rubber and plastic. Injection molding can also be divided into injection molding compression molding and die casting.

The device of extension injection mold ejection stroke that has, after first box and the shaping of second box cooperation outside die instrument, the inside hydraulic means of installation at the mounting groove can upwards drive head rod and second connecting rod motion for the movable block can be with the high upward movement of difference, thereby has adjusted ejection stroke, conveniently picks up the work piece after the internal shaping fast, but settle the hydraulic means of movable block lifting and head rod in the bottom of shaping groove, be in built-in design, whole hydraulic means and its holistic maintenance degree of difficulty of structure of being connected with hydraulic means is higher.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects existing in the prior art, the utility model provides an ejection stroke extension device of an injection mold, which can effectively solve the problems in the prior art.

(II) technical scheme

In order to achieve the above purpose, the utility model is realized by the following technical scheme:

the utility model discloses an injection mold extension ejection stroke device, which comprises an injection mold bottom, an injection top arranged at the upper part of the injection mold bottom, rectangular-distributed limit rods arranged at the periphery of the lower end of the injection top, limit holes corresponding to the limit rods arranged at the periphery of the upper end of the injection mold bottom, and a molding bottom groove arranged at the upper part of the injection mold bottom, wherein a cavity penetrating through the bottom of the injection mold bottom is arranged at the bottom of the molding bottom groove;

the lifting base is arranged in the cavity at the bottom of the injection molding bottom die;

the heat dissipation part is fixedly arranged at the top of the lifting base, a heat dissipation supporting plate is fixedly arranged at the top of the heat dissipation part, and the size of the heat dissipation supporting plate is matched with the size of the bottom cavity of the forming bottom groove;

the exhaust hole is formed in the center of the lifting base, is communicated with the cavity of the heat dissipation part, and is provided with an exhaust fan at the inner wall of the bottom opening of the exhaust hole;

the lifting mechanism is arranged at the bottom of the injection bottom die and used for driving the lifting base to move up and down to finish the upward lifting action of the injection part from the cavity of the molding bottom groove.

Furthermore, a plurality of groups of cavities distributed at intervals are formed in the heat dissipation part, and the cavities are vertically distributed and communicated with the exhaust holes.

Further, the two ends of the cavity of the heat dissipation part are not contacted with the inner wall of the cavity of the forming bottom groove.

Furthermore, the outer wall of the lower half part of the injection molding bottom die is provided with two groups of protection bottom side covers connected through a rotating shaft, and the bottommost part of the protection bottom side covers is higher than the bottommost part of the injection molding bottom die.

Still further, lifting mechanism includes positive and negative tooth lead screw, mobile station and connection branch, positive and negative tooth lead screw is installed in the bottom cavity of moulding plastics die block inside, the mobile station is installed in the outside of positive and negative tooth lead screw, connection branch sets up between positive and negative tooth lead screw and lifting base.

Furthermore, two ends of the connecting support rod are respectively connected with the lifting base and the contact part of the moving table in a rotating way, and a motor which penetrates through the injection molding bottom die and is connected with the end part of the positive and negative tooth screw rod is arranged outside the injection molding bottom die.

(III) beneficial effects

Compared with the known public technology, the technical scheme provided by the utility model has the following beneficial effects:

1. compared with a hydraulic device and a connecting rod which are arranged in a comparison file, the automatic lifting of the lifting base is completed by adopting a motor to drive and utilizing the lifting mechanism, the whole device is positioned at a position exposed below the injection bottom die, so that parts and the structure are more convenient to be simplified, the maintenance difficulty is reduced, meanwhile, the height adjustment of the lifting base is completed through the angle change of the connecting support rod, compared with the vertical height adjustment mode of the comparison file, the occupied height of the bottom of the whole die is smaller, the occupied height caused by the top die is reduced, and the design is more reasonable.

2. According to the utility model, heat can be timely transferred to the heat radiating part through the heat radiating supporting plate, and the heat of the heat radiating supporting plate can be more easily discharged through the communication between the cavity of the heat radiating part and the exhaust hole, so that the cooling time of the heat radiating supporting plate is saved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is evident that the drawings in the following description are only some embodiments of the present utility model and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.

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

FIG. 2 is a bottom view of the present utility model;

FIG. 3 is a cross-sectional view of the utility model at the lifting base;

FIG. 4 is a partial cross-sectional view of a heat sink member according to the present utility model;

reference numerals in the drawings represent respectively: 1. injection molding of the bottom die; 2. injection molding the top; 3. a limit rod; 4. a limiting hole; 5. forming a bottom groove; 6. a protective bottom side cover; 7. a positive and negative tooth screw rod; 8. a mobile station; 9. a connecting strut; 10. lifting the base; 11. an exhaust fan; 12. an exhaust hole; 13. a heat dissipation part; 14. and a heat dissipation supporting plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, 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. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. 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.

The utility model is further described below with reference to examples.

Examples

The device for prolonging the ejection stroke of the injection mold of the embodiment comprises an injection molding bottom mold 1, an injection molding top 2 arranged at the upper part of the injection molding bottom mold 1, a rectangular-distributed limit rod 3 arranged at the periphery of the lower end of the injection molding top 2, a limit hole 4 corresponding to the limit rod 3 arranged at the periphery of the upper end of the injection molding bottom mold 1 and a molding bottom groove 5 arranged at the upper part of the injection molding bottom mold 1, wherein a cavity penetrating through the bottom of the injection molding bottom mold 1 is formed at the bottom of the molding bottom groove 5; the lifting base 10 is arranged in a cavity at the bottom of the injection molding bottom die 1, and the lifting base 10 can longitudinally move in the cavity at the bottom of the injection molding bottom die 1; the heat dissipation part 13 is fixedly arranged at the top of the lifting base 10, the heat dissipation supporting plate 14 is fixedly arranged at the top of the heat dissipation part 13, the size of the heat dissipation supporting plate 14 is matched with the size of the bottom cavity of the forming bottom groove 5, and in the injection molding process, the heat dissipation supporting plate 14 is kept to be attached to the upper part of the bottom cavity of the injection molding bottom die 1, so that the position of the heat dissipation supporting plate 14 can not influence the normal injection molding process in the forming bottom groove 5; the exhaust hole 12 is formed in a cylindrical channel at the center of the lifting base 10, the exhaust hole 12 is communicated with a cavity of the heat dissipation part 13, a plurality of groups of channels which are distributed at intervals are formed in the heat dissipation part 13, the center of the channel is communicated with the exhaust hole 12, the whole heat dissipation part 13 and the exhaust hole 12 are communicated with each other, in the whole injection molding and injection molding process, a certain heat dissipation capacity is always provided for the heat dissipation supporting plate 14 through the communication effect of the internal channel of the heat dissipation part 13 and the exhaust hole 12, an exhaust fan 11 is arranged at the inner wall of the bottom opening of the exhaust hole 12, the heat dissipation capacity of the heat dissipation supporting plate 14 can be further improved after the exhaust fan 11 is started, the lengths of the two ends of the heat dissipation part 13 are smaller than the lengths of the heat dissipation supporting plate 14, when the heat dissipation supporting plate 14 is placed at the bottommost part of the molding bottom groove 5, the heat dissipation parts of the two ends of the heat dissipation part 13 are not contacted with the inner wall of the molding bottom groove 5, therefore, the heat at the side parts of the heat can also be discharged outwards through the heat dissipation part 13 and the exhaust hole 12, the two sides of the lower half part of the injection molding bottom cover 1 are provided with a protection side cover bottom 6 connected through a rotating shaft, the protection bottom 6 used for carrying out certain heat flow protection on the bottom cover 1, and the bottom protection bottom cover 6 is provided with a certain air flow protection gap, and the bottom protection is convenient to protect the bottom cover 1; the lifting mechanism is arranged at the bottom of the injection molding bottom die 1 and is used for driving the lifting base 10 to move up and down to finish the upward lifting action of injection molding parts in the cavity of the molding bottom groove 5, the lifting mechanism comprises a positive and negative screw rod 7, a moving table 8 and a connecting support rod 9, the positive and negative screw rod 7 is arranged in the cavity at the bottom of the injection molding bottom die 1, the moving table 8 is arranged outside the positive and negative screw rod 7, the connecting support rod 9 is arranged between the positive and negative screw rod 7 and the lifting base 10, two ends of the connecting support rod 9 are respectively connected with the lifting base 10 and the contact part of the moving table 8 in a rotating manner, a motor penetrating through the injection molding bottom die 1 and being connected with the end part of the positive and negative screw rod 7 is arranged outside the injection molding bottom die 1, two groups of moving tables 8 sleeved outside the positive and negative screw rod 7 synchronously move in opposite directions through the driving of the motor, and when the two groups of moving tables 8 are close to each other, the lifting base 10 connected with the top of the connecting support rod 9 can be pushed to move upward, and the finished product after injection molding can be lifted upward when the lifting base 10 moves upward, so that the ejection work of a heat dissipation support plate 14 can be finished.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. The utility model provides an extension ejection stroke device of injection mold, including injection mold die block (1), injection mold top (2) that injection mold die block (1) upper portion set up, limit lever (3) that rectangular distribution that injection mold top (2) lower extreme periphery set up, limit hole (4) that limit lever (3) correspond that injection mold die block (1) upper end periphery set up and injection mold die block (1) upper portion set up shaping kerve (5), the tank bottom of shaping kerve (5) is provided with the cavity that runs through injection mold die block (1) bottom;

the method is characterized in that:

the lifting base (10) is arranged in a cavity at the bottom of the injection bottom die (1);

the heat dissipation part (13) is fixedly arranged at the top of the lifting base (10), the top of the heat dissipation part (13) is fixedly provided with a heat dissipation supporting plate (14), and the size of the heat dissipation supporting plate (14) is matched with the size of the bottom cavity of the forming bottom groove (5);

the exhaust hole (12) is formed in the center of the lifting base (10), the exhaust hole (12) is communicated with a cavity of the heat dissipation part (13), and an exhaust fan (11) is arranged at the inner wall of the bottom opening of the exhaust hole (12);

the lifting mechanism is arranged at the bottom of the injection bottom die (1) and used for driving the lifting base (10) to move up and down to finish the upward lifting action of the injection part in the cavity of the molding bottom groove (5).

2. The injection mold ejection stroke extension device of claim 1, wherein: the inside of the heat dissipation part (13) is provided with a plurality of groups of cavities distributed at intervals, and the cavities are vertically distributed and communicated with the exhaust holes (12).

3. The injection mold ejection stroke extension device of claim 1, wherein: the two ends of the cavity of the heat dissipation part (13) are not contacted with the inner wall of the cavity of the forming bottom groove (5).

4. The injection mold ejection stroke extension device of claim 1, wherein: the outer wall of the lower half part of the injection molding bottom die (1) is provided with two groups of protection bottom side covers (6) connected through a rotating shaft, and the bottommost part of the protection bottom side covers (6) is higher than the bottommost part of the injection molding bottom die (1).

5. The injection mold ejection stroke extension device of claim 1, wherein: the lifting mechanism comprises a positive and negative tooth screw rod (7), a moving table (8) and a connecting support rod (9), wherein the positive and negative tooth screw rod (7) is arranged in a bottom cavity of the injection molding bottom die (1), the moving table (8) is arranged outside the positive and negative tooth screw rod (7), and the connecting support rod (9) is arranged between the positive and negative tooth screw rod (7) and a lifting base (10).

6. The injection mold ejection stroke extension device of claim 5, wherein: the two ends of the connecting support rod (9) are respectively connected with the contact parts of the lifting base (10) and the moving table (8) in a rotating way, and a motor which penetrates through the injection molding bottom die (1) and is connected with the end part of the positive and negative tooth screw rod (7) is arranged outside the injection molding bottom die (1).