CN111391241A

CN111391241A - Mouse lid injection model

Info

Publication number: CN111391241A
Application number: CN202010132011.0A
Authority: CN
Inventors: 姜伟; 徐钢锋; 王晨; 郑颖; 裘信国
Original assignee: Zhejiang University of Technology ZJUT
Current assignee: Zhejiang University of Technology ZJUT
Priority date: 2020-02-29
Filing date: 2020-02-29
Publication date: 2020-07-10

Abstract

An injection molding model of a mouse cover comprises a pouring system, a main runner cold charge system, an injection molding part, a positioning and guiding mechanism, a pushing and demolding mechanism, a core pulling mechanism and a resetting mechanism; the pouring system comprises a cavity and a core, and an injection molding mouse cover is formed between the cavity and the core; the main runner cooling system comprises a material pulling rod for pulling out condensed materials in the main runner; the positioning guide mechanism is used for inserting the inclined pin guide block in a penetrating way in the die closing process, laminating and forming the inclined pin guide block in the vertical direction, moving the inclined pin guide block for a certain distance towards the center and guiding the movable die and the fixed die to be correctly closed; the demolding mechanism is pushed out, the angle pin above the angle pin seat is pushed out of the injection mold, and the resetting mechanism assists in pushing out the injection mold; and the core pulling mechanism is used for pulling out the core at the molding position, and the support columns are used for preventing the core plate from deforming. The invention has the advantages of low cost, simplicity, practicability, reliable performance and great market prospect.

Description

Mouse lid injection model

Technical Field

The invention relates to the field of molds, in particular to an injection mold for a mouse cover.

Background

The plastic is one of common materials in modern industry, the product can be processed into any shape, and the plastic mold and the injection mold which are processed by injection molding have the advantages of high production efficiency, low price and the like in performance, and are mainly applied to the fields of automobiles, medical treatment, chemical industry and the like. Compared with metal parts, the plastic part forming and processing method is simple, can realize batch production, is easy to manufacture, only needs an automatic injection machine and a proper mould, is automatic, is simple to operate, obviously improves the production efficiency, and obviously becomes a good substitute material for the metal parts.

Plastic molds are tools that use their shape to form plastic articles of a certain shape and size, which has a decisive influence on the quality and cost of the manufacture of plastic parts. In the production process, the plastic mould is required to produce a high-quality product which can meet the use requirements in the aspects of dimensional precision, appearance, physical properties and the like.

The viscosity of engineering plastics is increased continuously along with the rise of temperature during molding, the molding pressure required during processing and molding is higher, and during each step of cycle of injection molding, a plastic part is required to be smoothly separated from a core or a concave die of a mold without error, and the demolding of the plastic part has a certain limit. Meanwhile, the plastic mold cavity is easily influenced by the high pressure of the melt during molding, the thickness of the side wall and the bottom plate of the cavity is too small, so that plastic deformation or bending deformation is caused, and cooling water leaks from the cooling water channel, which is not beneficial to processing and cleaning.

Disclosure of Invention

In order to overcome the problems, the invention provides the mouse cover injection mold with reasonable structural design.

The technical scheme adopted by the invention is as follows: an injection molding model of a mouse cover comprises an upper die holder 19, a lower die holder 1, a pouring system, a main runner cold material system, injection molding parts, a positioning and guiding mechanism, a pushing and demolding mechanism, a core pulling mechanism and a resetting mechanism;

the gating system includes: the sprue runner, the sprue bush 7 and the locating ring 6; the main runner is arranged in a sprue bush 7, the sprue bush 7 is sleeved in a positioning ring 6, base holes are matched, and the positioning ring 6 and the sprue bush 7 are fixed on an upper die base 19 through screws respectively; one end of the main runner is matched with a nozzle of the injection machine, and the other end of the main runner is communicated with the sub-runner; the sub-runners are communicated with the cavity 20;

the injection molded part includes: cavity plate 16, cavity 20, core plate 23, core 21 and platen 17; a cavity plate 16 is arranged below the upper die holder 19, and a cavity 20 is arranged in the cavity plate 16; the lower die holder 1 is provided with a partition plate 11 and a support pillar 15, the top surfaces of the partition plate 11 and the support pillar 15 are provided with a core plate 23, a core 21 is arranged in the core plate 23, and the bottom surface of the core 21 is provided with a pressure plate 17; an injection molding mouse cover is formed between the cavity 20 and the core 21;

the positioning guide mechanism comprises: guide post 26 and guide sleeve 25; the guide post 26 is arranged on the lower die holder 1, the lower die holder 1 is connected with the lower ejector plate 13 through the guide post 26, and a guide sleeve 25 is arranged at the joint of the lower ejector plate 13 and the guide post 26;

the push-out demolding mechanism comprises: an upper ejector plate 14, a lower ejector plate 13 and an ejector 22; the upper ejector plate 14 is connected with an ejector 22, and the ejector 22 passes through the core plate 23 and the core 21 to be contacted with the mouse cover;

the number of the partition plates 11 is two, and an upper ejector plate 14 and a lower ejector plate 13 are arranged between the two partition plates 11; the bottom surfaces of the supporting columns 15 are fixedly connected with the lower die holder 1, and the supporting columns 15 penetrate through the upper ejector plate 14 and the lower ejector plate 13 and are supported below the core plate 23;

the core pulling mechanism includes: the angle pin seat 5, the angle pin 4 and the angle pin guide block 18; the angle pin guide block 18 is arranged in the bottom of the core plate 23; the inclined pin seat 5 is arranged on the upper ejector plate 14, and the upper surface of the inclined pin seat 5 is provided with a sliding groove; the lower end of the angle pin 4 is arranged in the sliding groove of the angle pin seat 5, and the upper end of the angle pin 4 is sequentially penetrated with an angle pin guide block 18 and a core plate 23;

the reset mechanism includes: the garbage disposal device comprises a reset rod 10, a rectangular spring 9 and a garbage nail 12, wherein the reset rod 10 is installed on an upper ejector plate 14, the top surface of the reset rod 10 penetrates through a core plate 23 to be in contact with a cavity plate 16, and the rectangular spring 9 is sleeved on the reset rod 10; the lower die holder 1 is connected with a lower ejector plate 13 through a garbage pin 12;

the cold material system of sprue includes: a material pulling rod 8 for pulling out the condensed material in the main flow channel; the upper ejector plate 14 is connected with a material pulling rod 8, and the material pulling rod 8 corresponds to the position of the sprue bush 7.

Furthermore, the main runner is conical, and the cross section of main runner is circular.

Further, the upper ejector plate 14 is provided with a limiting column 24.

The invention has the beneficial effects that: the problems of plastic denaturation or deflection deformation and cooling water leakage of the cooling water channel can be solved, and the production efficiency is high; the molding is regular, and the method has great market prospect.

Drawings

FIG. 1 is a schematic view of an angle of the mouse cover according to the present invention.

FIG. 2 is a schematic view of another angle of the mouse cover according to the present invention.

Fig. 3 is a top view of the present invention.

Fig. 4 is a sectional view taken along the direction B-B in fig. 3.

Fig. 5 is a sectional view taken along a-a in fig. 3.

FIG. 6 is a schematic view of the construction of the cavity plate according to the present invention.

Description of reference numerals: 1. a lower die holder; 2. a first socket head cap screw 3 and a second socket head cap screw; 4. a taper pin; 5. an angle pin seat; 6. positioning rings; 7. a sprue bush; 8. pulling a material rod; 9. a rectangular spring; 10. a reset lever; 11. a partition plate; 12, garbage nailing; 13. a lower ejector plate; 14. an upper ejector plate; 15. a support pillar; 16. a cavity plate; 17. pressing a plate; 18. a taper pin guide block; 19. an upper die holder; 20. a cavity; 21. a core; 22. a thimble; 23. a core plate; 24. a limiting column; 25. a guide sleeve; 26 guide posts.

Detailed Description

The invention will be further described with reference to specific examples, but the scope of the invention is not limited thereto:

referring to the attached drawings, the injection molding model of the mouse cover comprises an upper die base 19, a lower die base 1, a pouring system, a main runner cold charge system, an injection molding part, a positioning and guiding mechanism, a pushing and demolding mechanism, a core pulling mechanism and a resetting mechanism;

the gating system includes: the sprue runner, the sprue bush 7 and the locating ring 6; the main flow passage is conical, and the cross section of the main flow passage is circular; the main runner is arranged in a sprue bush 7, the sprue bush 7 is sleeved in a positioning ring 6, base holes are matched, and the positioning ring 6 and the sprue bush 7 are fixed on an upper die base 19 through screws respectively; one end of the main runner is matched with a nozzle of the injection machine, and the other end of the main runner is communicated with the sub-runner; the sub-runners are communicated with the cavity 20; when the mould is installed and debugged, the positioning ring 6 is placed in the positioning hole of the fixed mould plate of the injection machine and is applied to the installation and positioning of the injection machine and the mould.

The injection molded part includes: cavity plate 16, cavity 20, core plate 23, core 21 and platen 17; a cavity plate 16 is arranged below the upper die holder 19, and a cavity 20 is arranged in the cavity plate 16; the lower die base 1 is provided with a spacing plate 11 and a support column 15, and the spacing plate 11 is connected with the lower die base 1 through a first inner hexagon screw 2; the top surfaces of the partition plate 11 and the support columns 15 are provided with core plates 23, the core plates 23 are internally provided with cores 21, and the bottom surfaces of the cores 21 are provided with press plates 17; an injection molding mouse cover is formed between the cavity 20 and the core 21; the cavity 20 is a molding part on the outer surface of the plastic part, and the core 21 and the cavity 20 are integrally embedded;

the positioning guide mechanism comprises: guide post 26 and guide sleeve 25; the guide post 26 is arranged on the lower die holder 1, the lower die holder 1 is connected with the lower ejector plate 13 through the guide post 26, and a guide sleeve 25 is arranged at the joint of the lower ejector plate 13 and the guide post 26; the front end of the guide post 26 is designed to be a frustum shape, and the guide post enters a matched guide hole in the lower ejector plate 13. The material of the guide sleeve 25 is SUJ2 steel, the fixed ends of the lower die holder 1 and the guide post 26 are in transition fit, and when the die is completely closed, the accurate positions of the upper die holder 19 and the lower die holder 1 are ensured.

the number of the partition plates 11 is two, and an upper ejector plate 14 and a lower ejector plate 13 are arranged between the two partition plates 11; the bottom surfaces of the supporting columns 15 are fixedly connected with the lower die holder 1, and the supporting columns 15 penetrate through the upper ejector plate 14 and the lower ejector plate 13 and are supported below the core plate 23; the support posts 15 prevent the core plate 23 from deforming;

the reset mechanism includes: the garbage disposal device comprises a reset rod 10, a rectangular spring 9 and a garbage nail 12, wherein the reset rod 10 is installed on an upper ejector plate 14, the top surface of the reset rod 10 penetrates through a core plate 23 to be in contact with a cavity plate 16, and the rectangular spring 9 is sleeved on the reset rod 10; the lower die holder 1 is connected with a lower ejector plate 13 through a garbage pin 12; the upper ejector plate 14 is provided with a spacing column 24. The reset rod 10 is an auxiliary device for pushing out the injection mould, and after the product is demoulded every time, the push-out mechanism returns to the original position, and the garbage nails 12 are positioned at the top of the lower die holder and can not be reset. The limiting column 24 prevents the reinforcing ribs and the engraving punch from being damaged.

The embodiments described in this specification are merely illustrative of implementations of the inventive concept and the scope of the present invention should not be considered limited to the specific forms set forth in the embodiments but rather by the equivalents thereof as may occur to those skilled in the art upon consideration of the present inventive concept.

Claims

1. The utility model provides a mouse lid injection mould which characterized in that: the injection molding machine comprises an upper die holder (19), a lower die holder (1), a pouring system, a main runner cold material system, injection molding parts, a positioning guide mechanism, a pushing and demolding mechanism, a core pulling mechanism and a resetting mechanism;

the gating system includes: the sprue runner comprises a main runner, a branch runner, a sprue bush (7) and a positioning ring (6); the main runner is arranged in a sprue bush (7), the sprue bush (7) is sleeved in a positioning ring (6) and matched with a base hole, and the positioning ring (6) and the sprue bush (7) are respectively fixed on an upper die base (19) through screws; one end of the main runner is matched with a nozzle of the injection machine, and the other end of the main runner is communicated with the sub-runner; the sub-channel is communicated with the cavity (20);

the injection molded part includes: a cavity plate (16), a cavity (20), a core plate (23), a core (21) and a pressure plate (17); a cavity plate (16) is arranged below the upper die holder (19), and a cavity (20) is arranged in the cavity plate (16); the lower die holder (1) is provided with a partition plate (11) and a support column (15), the top surfaces of the partition plate (11) and the support column (15) are provided with a core plate (23), a core (21) is arranged in the core plate (23), and the bottom surface of the core (21) is provided with a press plate (17); an injection molding mouse cover is formed between the cavity (20) and the core (21);

the positioning guide mechanism comprises: a guide post (26) and a guide sleeve (25); the guide post (26) is arranged on the lower die holder (1), the lower die holder (1) is connected with the lower ejector plate (13) through the guide post (26), and a guide sleeve (25) is arranged at the joint of the lower ejector plate (13) and the guide post (26);

the push-out demolding mechanism comprises: an upper ejector plate (14), a lower ejector plate (13) and an ejector pin (22); the upper ejector plate (14) is connected with an ejector pin (22), and the ejector pin (22) penetrates through the core plate (23) and the core (21) to be in contact with the mouse cover;

the number of the partition plates (11) is two, and an upper ejector plate (14) and a lower ejector plate (13) are arranged between the two partition plates (11); the bottom surfaces of the supporting columns (15) are fixedly connected with the lower die holder (1), and the supporting columns (15) penetrate through the upper ejector plate (14) and the lower ejector plate (13) to be supported below the core plate (23);

the core pulling mechanism includes: the device comprises an inclined pin seat (5), an inclined pin (4) and an inclined pin guide block (18); the angle pin guide block (18) is arranged in the bottom of the core plate (23); the inclined pin seat (5) is arranged on the upper ejector plate (14), and the upper surface of the inclined pin seat (5) is provided with a sliding groove; the lower end of the angle pin (4) is arranged in a sliding groove of the angle pin seat (5), and the upper end of the angle pin (4) is sequentially penetrated with an angle pin guide block (18) and a core plate (23);

the reset mechanism includes: the garbage disposal device comprises a reset rod (10), a rectangular spring (9) and a garbage nail (12), wherein the reset rod (10) is installed on an upper ejector plate (14), the top surface of the reset rod (10) penetrates through a core plate (23) to be in contact with a cavity plate (16), and the rectangular spring (9) is sleeved on the reset rod (10); the lower die holder (1) is connected with the lower ejector plate (13) through a garbage nail (12);

the cold material system of sprue includes: a material pulling rod (8) used for pulling out the condensed material in the main flow channel; the upper ejector plate (14) is connected with a material pulling rod (8), and the material pulling rod (8) corresponds to the position of the sprue bush (7).

2. The mouse cover injection mold of claim 1, wherein: the main runner is conical, and the cross section of main runner is circular.

3. The mouse cover injection mold of claim 1, wherein: and the upper ejector plate (14) is provided with a limiting column (24).