CN212045740U

CN212045740U - Reverse reducing injection mold structure

Info

Publication number: CN212045740U
Application number: CN202020326752.8U
Authority: CN
Inventors: 徐浩宇
Original assignee: Jiangsu Aiyuan Medical Technology Corp
Current assignee: Jiangsu Yangzi River Medical Technology Co ltd
Priority date: 2020-03-17
Filing date: 2020-03-17
Publication date: 2020-12-01
Anticipated expiration: 2030-03-17

Abstract

The utility model discloses a reverse reducing injection mold structure, including cover half and movable mould, the cover half includes the roof, the purt mouth, fixed die plate and mould benevolence, the movable mould includes the movable mould board, backup pad and bottom plate, the middle outside of roof is equipped with the holding ring, the purt mouth is located on the fixed die plate, the bottom of fixed die plate is equipped with runner and mould benevolence, the movable mould board, backup pad and bottom plate pass through bolted connection together, the surface of movable mould board is equipped with separable die joint, be equipped with separable die cavity in the middle of the die joint, the position of die cavity and the position of fixed die plate bottom mould benevolence are corresponding on the die joint, the movable mould board side is equipped with cold. The utility model discloses an injection molding is injection moulding in the die cavity, consequently makes the goods surface joint line that generates few, and the wholeness of goods is good, accomplishes the drawing of patterns by the ejecting injection molding of thimble, has avoided dismantling the mould because of spring wear to cause the damage to the mould, has improved production efficiency, reduction in production cost.

Description

Reverse reducing injection mold structure

Technical Field

The utility model relates to an injection mold technical field specifically is a reverse reducing injection mold structure.

Background

The traditional injection mold adopts a spring to eject out an injection molding part, the spring has short service life and is easy to wear and consume, the design requirement of parts with variable diameters of the appearance cannot be met, the joint of a product is easy to break, the mold loss is large, the cost is high, and the risk is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a reverse reducing injection mold structure to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a reverse reducing injection mold structure, includes cover half and movable mould, the cover half includes roof, purt mouth, fixed die plate and mould benevolence, the movable mould includes movable mould board, backup pad and bottom plate, the middle outside of roof is equipped with the holding ring, purt mouth is located on the fixed die plate, the bottom of fixed die plate is equipped with runner and mould benevolence, movable mould board, backup pad and bottom plate pass through bolted connection together, the surface of movable mould board is equipped with separable die joint, be equipped with separable die cavity in the middle of the die joint, the position of die cavity is corresponding with the position of fixed die plate bottom mould benevolence on the die joint, the movable mould board side is equipped with cold water course, be equipped with ejection mechanism in the inner chamber of backup pad, ejection mechanism includes the thimble, the thimble passes the bottom that.

Preferably, the ejection mechanism further comprises a return spring and a push plate, one end of the return spring is connected with the top of the inner cavity of the support plate, the other end of the return spring is connected with the push plate, and the push plate is connected with the ejector pin.

Preferably, the lower bottom surface of the fixed template and the upper bottom surface of the movable template form a parting surface, and the parting surface is of a trapezoidal structure.

Preferably, the ejector pin comprises an ejector sleeve and an ejector pin, the ejector sleeve is sleeved on the ejector pin, the bottom of the ejector pin is fixed on the bottom plate, and the bottom of the ejector sleeve is arranged on the push plate.

Preferably, guide sleeves are arranged on the periphery of the fixed die plate, and matched guide pillars are arranged on the surface of the movable die plate.

Compared with the prior art, the beneficial effects of the utility model are as follows:

this mould is inseparabler when making movable mould and cover half closed through trapezoidal die joint design, and injection moulding is filled into in the die cavity of injection molding on the die joint, consequently makes the goods surface compound die line that generates few, and the wholeness of goods is good, accomplishes the drawing of patterns by the ejecting injection molding of thimble, has avoided dismantling the mould because of spring wear and has caused the damage to the mould, has improved production efficiency, reduction in production cost.

Drawings

FIG. 1 is a schematic structural view of the mold closing state of the present invention;

FIG. 2 is a schematic structural view of the present invention combined with a movable mold;

fig. 3 is a schematic structural diagram of the fixed mold of the present invention.

Fig. 4 is a schematic view of the structure of the thimble according to the present invention.

In the figure: 1. a top plate; 2. a squirt nozzle; 3. fixing a template; 4. parting surfaces; 5. moving the template; 6. a support plate; 7. a base plate; 8. a positioning ring; 9. a flow channel; 10. a mold core; 11. a cold water channel; 12. a thimble; 13. a return spring; 14. pushing the plate; 15. a guide sleeve; 16. a guide post; 17. a ejector sleeve; 18. a ejector pin; 19. a mold cavity.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "connected", and the like are to be construed broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, a reverse reducing injection mold structure comprises a fixed mold and a movable mold, wherein the fixed mold comprises a top plate 1, a sprue bush 2, a fixed mold plate 3 and a mold core, the movable mold comprises a movable mold plate 5, a support plate 6 and a bottom plate 7, a positioning ring 8 is arranged on the outer side of the middle of the top plate 1, the top plate 1 and the fixed mold plate 3 are connected together through a bolt, the sprue bush 2 is arranged on the fixed mold plate 3, a runner 9 and the mold core are arranged at the bottom of the fixed mold plate 3, the runner 9 is communicated with the sprue bush 2, raw materials are fed through the runner 9 and flow into the mold core 10, a separable parting surface 4 is arranged on the surface of the movable mold plate 5, the parting surface 4 adopts a trapezoidal structure design, the bottom surface shape of the fixed mold plate 3 is matched with the parting surface 4, the parting surface 4 designed by the trapezoidal structure can enable the movable mold and the fixed mold to be closed, the surface of the parting surface 4 is provided with a separable die cavity 19, the side edge of the parting surface is provided with a cold water channel 11, the die cavity 19 is arranged in the die cavity 10 after die assembly, the die cavity 19 wraps the die cavity 10, the die cavity 10 and the die cavity 19 form a die cavity, an injection molding part is injection molded in the die cavity, an ejection mechanism is arranged in the inner cavity of the supporting plate 6 and comprises an ejector pin 12, a return spring 13 and a push plate 14, the ejector pin 12 comprises a driver cylinder 17 and a driver needle 18, the driver cylinder 17 is sleeved on the driver needle 18 and moves up and down on the driver needle 18, the bottom of the driver needle 18 is fixed on the bottom plate 7, the bottom of the driver cylinder 17 is installed on the push plate 14, the driver needle 18 is used for inserting an interface injection molding. One end of the reset spring 13 is connected with the top of the inner cavity of the supporting plate 6, the other end of the reset spring is connected with the push plate 14, the guide sleeve 15 is arranged on the periphery of the fixed die plate 3, the surface of the movable die plate 5 is provided with the guide pillar 16 which is matched with the guide pillar, and the guide pillar 16 and the guide sleeve 15 play a role in guiding and positioning the matched die.

The utility model discloses an application principle does: firstly, moving the movable die to the right, entering the guide sleeve 15 through the guide post 16 to carry out die assembly positioning on the movable die and the fixed die; after the mold core 10 enters the mold cavity 19 and is attached together, the injection molding machine injects materials into the flow channel 9 through the sprue bush 2, the materials are injected into the mold core 10 through the flow channel 9 and are gathered into the mold cavity, and the materials are cooled and molded through cooling circulating water in the cold water channel 11; when the mold is opened, the movable mold moves leftwards, the parting surface 4 is separated under the action of the oil cylinder, the separable mold cavity 19 is transversely opened to the maximum limit of the size of the injection molding part, the push plate 14 is pushed to move the ejector sleeve 17 upwards, the ejector pin 18 is fixed on the mold bottom plate 7 and does not move, so that the ejector sleeve 17 ejects and demolds the injection molding part wrapped on the ejector pin 18, and then the return spring 13 rebounds, and the ejector pin 12 is reset. This mould makes movable mould and cover half closely closed through 4 designs on trapezoidal die joint, and injection moulding in the die cavity of injection molding on the die joint consequently makes the goods surface joint line that generates few, and the wholeness of goods is good, finishes the drawing of patterns by the ejecting injection molding of thimble, has avoided dismantling the mould because of spring wear to cause the damage to the mould, has improved production efficiency, reduction in production cost.

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

Claims

1. The utility model provides a reverse reducing injection mold structure which characterized in that: including cover half and movable mould, the cover half includes roof (1), sprue bush (2), fixed die plate (3) and mould benevolence (10), the movable mould includes movable mould board (5), backup pad (6) and bottom plate (7), the centre outside of roof (1) is equipped with holding ring (8), sprue bush (2) are located on fixed die plate (3), the bottom of fixed die plate (3) is equipped with runner (9) and mould benevolence (10), movable mould board (5), backup pad (6) and bottom plate (7) are in the same place through bolted connection, the surface of movable mould board (5) is equipped with separable die joint (4), be equipped with separable die cavity (19) in the middle of die joint (4), the position of die cavity (19) is corresponding with the position of fixed die plate (3) bottom mould benevolence (10) on die joint (4), movable mould board (5) side is equipped with cold water course (11), an ejection mechanism is arranged in an inner cavity of the supporting plate (6), the ejection mechanism comprises an ejector pin (12), and the ejector pin (12) penetrates through the movable template (5) and penetrates through the bottom of the mold cavity (19).

2. The reverse reducing injection mold structure according to claim 1, wherein: the ejection mechanism further comprises a return spring (13) and a push plate (14), one end of the return spring (13) is connected with the top of the inner cavity of the supporting plate (6), the other end of the return spring is connected with the push plate (14), and the push plate (14) is connected with the ejector pin (12).

3. The reverse reducing injection mold structure according to claim 1, wherein: the parting surface (4) is of a trapezoidal structure.

4. The reverse reducing injection mold structure according to claim 1, wherein: the thimble (12) comprises an ejector sleeve (17) and an ejector pin (18), the ejector sleeve (17) is sleeved on the ejector pin (18), the bottom of the ejector pin (18) is fixed on the bottom plate (7), and the bottom of the ejector sleeve (17) is arranged on the push plate (14).

5. The reverse reducing injection mold structure according to claim 1, wherein: guide sleeves (15) are arranged on the periphery of the fixed die plate (3), and guide posts (16) matched with each other are arranged on the surface of the movable die plate (5).