CN214188318U

CN214188318U - Double-colored injection mold's mechanism of loosing core

Info

Publication number: CN214188318U
Application number: CN202023125903.2U
Authority: CN
Inventors: 王�华
Original assignee: Shenzhen Jisheng Mould Co ltd
Current assignee: Shenzhen Jisheng Mould Co ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-09-14
Anticipated expiration: 2030-12-23

Abstract

The utility model discloses a double-colored injection mold's mechanism of loosing core, including roof, movable mould and cover half, the cover half aligns with the movable mould each other and arranges, the top of cover half and movable mould all is equipped with the one shot cavity that is used for the stereoplasm injection molding, the cover half all is equipped with the secondary cavity who is used for the soft injection molding with the bottom of movable mould, secondary cavity and the mutual symmetrical arrangement of one shot cavity, the roof is arranged between one shot cavity and secondary cavity, runs through perpendicularly on the cover half and arranges and be used for the ejecting and pivoted ejector pin of roof. The utility model discloses acting as the flexible slider of loosing core that drives of power supply actuating cylinder and drive behind the external air supply of gas distribution pipe and moving, simple structure is practical, and the slider of loosing core is along with moulding together transporting, and the slider motion of just loosing core is controllable, is favorable to realizing once loosing core of double-colored in-process and accomplishes the processing of moulding and use, and the in-process vibration noise of loosing core also descends by a wide margin, is favorable to the high-quality processing of double-colored product to use.

Description

Double-colored injection mold's mechanism of loosing core

Technical Field

The utility model relates to a double-colored injection mold technical field specifically is a double-colored injection mold's mechanism of loosing core.

Background

The double-color injection molding is a molding process for injecting two different materials into the same set of mold, so that the injection molded part is formed by the two materials, and some materials are different in color and other materials are different in hardness, so that the attractiveness and the assembly performance of the product are improved.

The core-pulling mechanism can be understood as that the product is incapable of being demoulded due to the characteristic that the product can interfere with the direction of separating from the mould, and in such places, the steel material which can interfere with the product needs to be pulled out firstly after the mould is opened (sometimes before the mould is opened) so as to ensure that the product is taken out from the mould smoothly.

The mechanism of loosing core that has double-colored injection mold at present generally function singleness, and realize that above-mentioned product is generally comparatively complicated or can not realize the single and loose core before the shaping structure of only loosing core once, the mechanism that can not realize the single and loose core generally can loose core twice at the in-process that double-colored was moulded plastics, then causes wearing and tearing to influence the quality of injection moulding product easily, for this reason, we provide one kind and can conveniently carry out the double-colored in-process single of moulding plastics of product and loose core, and still possess the position of loosing core and accelerate the mechanism of loosing core of cooling design function.

Disclosure of Invention

An object of the utility model is to provide a double-shot injection mold's mechanism of loosing core to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a core pulling mechanism of a double-color injection mold comprises a top plate, a movable mold and a fixed mold, wherein the fixed mold and the movable mold are arranged in an aligned mode, a primary cavity for forming a hard injection molding part is arranged at the top ends of the fixed mold and the movable mold, a secondary cavity for forming a soft injection molding part is arranged at the bottom ends of the fixed mold and the movable mold, the secondary cavity and the primary cavity are symmetrically arranged, the top plate is arranged between the primary cavity and the secondary cavity, ejector rods for ejecting and rotating the top plate vertically penetrate through the fixed mold, fixed cavities matched with the top plate are arranged on the fixed mold and the movable mold, guide grooves are arranged at two ends inside the top plate, a core pulling slide block is arranged inside each guide groove, a piston matched with each guide groove is arranged at the bottom end of the core pulling slide block, a pair of air cylinders are symmetrically arranged between the piston outside the core pulling slide block and each guide groove, and the two air cylinders are all parallel to the slide block core pulling arrangement, be connected with the gas distribution pipe on the roof, the end of giving vent to anger of gas distribution pipe extends to both ends guide way position department respectively, be equipped with on the roof lateral wall with gas distribution pipe matched with recess, the gas distribution pipe is buried underground inside the recess, and is connected with the air duct that is used for intercommunication cylinder on the gas distribution pipe, two the guide way all is connected with forced air cooling pipe on being close to the gas distribution pipe of one side each other, forced air cooling pipe and guide way communicate mutually, all install the solenoid valve on forced air cooling pipe and the air duct, two the guide way is close to the inside exhaust hole that all is equipped with of roof of one side each other, and the one end and the guide way in exhaust hole communicate mutually, and the one end that the guide way was kept away from in the exhaust hole extends to roof lateral wall position department and is linked together with the external world.

Preferably, the inside of the core-pulling slider is provided with a hollow cavity, the bottom end of the hollow cavity extends to the position below the piston and is communicated with the guide groove, an exhaust pipe is arranged inside the hollow cavity, a gap exists between the outer side of the exhaust pipe and the hollow cavity, the bottom end of the exhaust pipe is connected with a hose, and the exhaust hole is communicated with the guide groove through the hose and the exhaust pipe.

Preferably, the fixed disk is evenly arranged between the outer side of the exhaust pipe and the core-pulling sliding block at equal intervals, and the air filtering holes are evenly arranged on the fixed disk at equal intervals along the circumferential direction of the fixed disk.

Preferably, the inside of recess is equipped with the buckle that is used for increasing the gas distribution pipe stability.

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

1: utilize acting as the flexible slider of loosing core that drives of power supply drive actuating cylinder behind the external air supply of gas distribution pipe to carry out the motion of loosing core, simple structure is practical, and the slider of loosing core is along with moulding the piece and together transporting, and the slider motion of loosing core is controllable, is favorable to realizing once loosing core among the double-colored injection molding process and accomplishes promptly and mould a processing use, and the in-process vibration noise of loosing core also descends by a wide margin, is favorable to the high-quality processing of double-colored product to use.

2: the air distribution pipe is communicated with the guide groove by the air cooling pipe, and the hollow cavity and the exhaust pipe are respectively arranged in the core-pulling slide block, when in use, the air source of the air distribution pipe is fully utilized to cool the inside of the core-pulling slide block, the outer wall of the core-pulling slide block is directly contacted with the core-pulling part of the plastic part, so that the cooling in the core-pulling slide block can effectively increase the forming efficiency and the forming quality of the inside of the core-pulling part of the plastic part, the production efficiency of products is increased, and the core-pulling damage caused by poor cooling and shaping effects possibly generated by the deep core-pulling part of the products is avoided, on the other hand, the exhaust pipe extends to the position of the top end inside the core-pulling slide block, the stability of the core-pulling slide block is increased by the exhaust pipe, the circulation of gas must flow through a gap part generated between the exhaust pipe and the core-pulling slide block, and the air filtering holes on the fixed disc of the gap part improve the uniformity of the distribution of the cooling gas, and the gap part interval is smaller, and the cooling effect generated by gas circulation is better.

Drawings

FIG. 1 is a schematic view of the internal structure of the lower side surface in the mold-opened state of the present invention;

FIG. 2 is a schematic view of the internal structure of the lower side surface in the mold closing state of the present invention;

fig. 3 is a schematic view of the internal structure of the top plate side of the present invention;

fig. 4 is a schematic side view of the top plate of the present invention;

fig. 5 is a schematic view of the enlarged structure inside the local side of the top plate of the present invention.

In the figure: 1. a primary cavity; 2. a top plate; 3. a secondary cavity; 4. moving the mold; 5. a top rod; 6. a fixed cavity; 7. fixing a mold; 8. a core-pulling slide block; 9. an exhaust hole; 10. an air distribution pipe; 11. a groove; 12. a cylinder; 13. a piston; 14. a hose; 15. a guide groove; 16. a hollow cavity; 17. an exhaust pipe; 18. an air-cooled pipe; 19. an electromagnetic valve; 20. an air duct; 21. a wind filtering hole; 22. fixing the disc; 23. and (5) buckling.

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.

Referring to fig. 1-5, the present invention provides an embodiment: a core pulling mechanism of a double-color injection mold comprises a top plate 2, a movable mold 4 and a fixed mold 7, wherein the fixed mold 7 and the movable mold 4 are arranged in an aligned mode, primary cavities 1 for molding hard injection molding parts are arranged at the top ends of the fixed mold 7 and the movable mold 4, secondary cavities 3 for molding soft injection molding parts are arranged at the bottom ends of the fixed mold 7 and the movable mold 4, the secondary cavities 3 and the primary cavities 1 are symmetrically arranged, the top plate 2 is arranged between the primary cavities 1 and the secondary cavities 3, ejector rods 5 for ejecting and rotating the top plate 2 are vertically arranged on the fixed mold 7 in a penetrating mode, fixed cavities 6 matched with the top plate 2 are arranged on the fixed mold 7 and the movable mold 4, guide grooves 15 are arranged at two ends inside the top plate 2, a core pulling slide block 8 is arranged inside the guide grooves 15, a piston 13 matched with the guide grooves 15 is arranged at the bottom end of the core pulling slide block 8, a pair of air cylinders 12 is symmetrically arranged between the piston 13 outside the core pulling slide block 8 and the guide grooves 15, the two cylinders 12 are arranged in parallel with the core-pulling slide block 8, the top plate 2 is connected with an air distribution pipe 10, the air outlet end of the air distribution pipe 10 extends to the positions of guide grooves 15 at two ends respectively, the outer side wall of the top plate 2 is provided with a groove 11 matched with the air distribution pipe 10, the air distribution pipe 10 is embedded in the groove 11, the groove 11 is internally provided with a buckle 23 used for increasing the stability of the air distribution pipe 10, the air distribution pipe 10 is connected with an air duct 20 used for communicating the cylinders 12, the air distribution pipe 10 at one side, close to each other, of the two guide grooves 15 is connected with an air cooling pipe 18, the air cooling pipe 18 is communicated with the guide grooves 15, the air cooling pipe 18 and the air duct 20 are both provided with electromagnetic valves 19, the top plate 2 at one side, close to each other, of the two guide grooves 15 is provided with an air exhaust hole 9, one end of the exhaust hole 9 is communicated with the guide grooves 15, and one end, far away from the guide grooves 15, extends to the outer side wall of the top plate 2 and is communicated with the outside, the inside of loosing core slider 8 is equipped with cavity 16 in the bottom of cavity 16 extends to piston 13 below and is linked together with guide way 15, the inside of cavity 16 is equipped with blast pipe 17 in, there is the clearance in the outside of blast pipe 17 and between the cavity 16, equidistant even arranged fixed disk 22 between the outside of blast pipe 17 and the slider 8 of loosing core, equidistant even arranged along its circumferencial direction has strained wind hole 21 on fixed disk 22, the bottom of blast pipe 17 is connected with hose 14, and exhaust hole 9 is linked together through hose 14 and blast pipe 17 and guide way 15.

The working principle is as follows: when a double-color product needs to be injected, the air distribution pipe 10 is externally connected with an air pump, after mold closing, injection molding of a first hard rubber part is carried out by using the primary cavity 1, injection molding of a second soft rubber part is carried out by using the secondary cavity 3, the air cooling pipe 18 can be selectively opened in the plastic cooling molding process to enable air to sequentially flow through the guide groove 15, the hollow cavity 16, the exhaust pipe 17 and the hose 14 and finally be discharged from the exhaust hole 9 part, air cooling is carried out on a plastic part at the core-pulling slide block 8 part, the core-pulling part molding effect is improved, mold opening is carried out after mold closing, the movable mold 7 moves towards one side far away from the fixed mold 4, the ejector rod 5 ejects the top plate 2 under the driving of the external hydraulic cylinder and the rotating assembly, after ejection, the core-pulling slide block 8 at the primary cavity 1 part is kept fixed, the core-pulling slide block 8 at the secondary cavity 3 part is contracted for core pulling, the product after core pulling falls due to dead weight for stripping, after contraction of the core-pulling of the product, the core-pulling slide block 8 is opened by the electromagnetic valve 19 at the position 20, the air guide pipe is ventilated to drive the air cylinder 12 to extend and extend Driven, then the roof 2 rotates 180 degrees and carries out the circulation processing, and the rotation of roof 2 can be the positive and negative rotation.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention 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.

Claims

1. The utility model provides a double-colored injection mold's mechanism of loosing core, includes roof (2), movable mould (4) and cover half (7), cover half (7) and movable mould (4) are aimed at each other and are arranged, the top of cover half (7) and movable mould (4) all is equipped with and is used for fashioned one shot cavity (1) of stereoplasm injection molding, the bottom of cover half (7) and movable mould (4) all is equipped with and is used for fashioned secondary cavity (3) of soft injection molding, secondary cavity (3) and the mutual symmetrical arrangement of one shot cavity (1), roof (2) are arranged between one shot cavity (1) and secondary cavity (3), run through perpendicularly on cover half (7) and have been arranged and be used for ejecting and pivoted ejector pin (5) of roof (2), and all be equipped with on cover half (7) and movable mould (4) with roof (2) matched with fixed chamber (6), its characterized in that: the core-pulling device is characterized in that guide grooves (15) are arranged at two ends of the inner part of the top plate (2), a core-pulling sliding block (8) is arranged in the guide grooves (15), a piston (13) matched with the guide grooves (15) is arranged at the bottom end of the core-pulling sliding block (8), a pair of air cylinders (12) are symmetrically arranged between the piston (13) and the guide grooves (15) on the outer side of the core-pulling sliding block (8), the two air cylinders (12) are arranged in parallel to the core-pulling sliding block (8), an air distribution pipe (10) is connected onto the top plate (2), the air outlet end of the air distribution pipe (10) extends to the positions of the guide grooves (15) at the two ends respectively, grooves (11) matched with the air distribution pipe (10) are formed in the outer side wall of the top plate (2), the air distribution pipe (10) is embedded into the grooves (11), and the air distribution pipe (10) is connected with an air guide pipe (20) used for communicating the air cylinders (12), two all be connected with air-cooled pipe (18) on air distribution pipe (10) that guide way (15) are close to one side each other, air-cooled pipe (18) are linked together with guide way (15), all install solenoid valve (19), two on air-cooled pipe (18) and air duct (20) guide way (15) are close to roof (2) inside of one side each other and all are equipped with exhaust hole (9), and the one end and guide way (15) of exhaust hole (9) are linked together, and exhaust hole (9) keep away from the one end of guide way (15) and extend to roof (2) lateral wall position department and be linked together with the external world.

2. The core-pulling mechanism of the two-color injection mold according to claim 1, characterized in that: the utility model discloses a core pulling device, including loose core slider (8), the inside of loosing core slider (8) is equipped with well cavity (16) the bottom of well cavity (16) extends to piston (13) below and is linked together with guide way (15), the inside of well cavity (16) is equipped with blast pipe (17), there is the clearance between the outside of blast pipe (17) and well cavity (16), and the bottom of blast pipe (17) is connected with hose (14), and exhaust hole (9) are linked together through hose (14) and blast pipe (17) and guide way (15).

3. The core-pulling mechanism of the two-color injection mold according to claim 2, characterized in that: the fixed disk (22) is evenly arranged between the outer side of the exhaust pipe (17) and the core-pulling sliding block (8) at equal intervals, and the air filtering holes (21) are evenly arranged on the fixed disk (22) along the circumferential direction of the fixed disk at equal intervals.

4. The core-pulling mechanism of the two-color injection mold according to claim 1, characterized in that: the inside of recess (11) is equipped with buckle (23) that are used for increasing gas distribution pipe (10) stability.