CN106863715B

CN106863715B - Double-color mold

Info

Publication number: CN106863715B
Application number: CN201710142344.XA
Authority: CN
Inventors: 谢世武
Original assignee: Shenzhen Ronghuiwang Plastic Rubber Electronics Co ltd
Current assignee: Shenzhen Ronghuiwang Plastic Rubber Electronics Co ltd
Priority date: 2017-03-10
Filing date: 2017-03-10
Publication date: 2022-12-23
Anticipated expiration: 2037-03-10
Also published as: CN106863715A

Abstract

The invention relates to a double-color die which comprises a first front die assembly, a second front die assembly and a rear die assembly, wherein the first front die assembly comprises a first front die plate and a first front die, the second front die assembly comprises a second front die plate and a second front die, the rear die assembly comprises a rear die plate, a rear die and a slide block, a loose core is arranged on the slide block, the outer side surface of the slide block is an inclined surface, a driving block is arranged on one side of the first front die plate, elastic mechanisms are symmetrically arranged at the left end and the right end of the inclined surface of the slide block, an inclined chute is formed between each elastic mechanism and the slide block, a pulling-out block is arranged on one side of the second front die plate, the pulling-out block is clamped with the inclined chute in a sliding fit manner, and the slide block outwards performs a core pulling-out action when moving upwards along with the pulling-out block under the action of the elastic mechanisms. The core-pulling mechanism has the advantages of reasonable and simple structural design, low cost, reliable operation of the die, no need of adopting a hydraulic structure for core pulling, and very convenient use and maintenance, and the core-pulling action can be realized through normal die opening action.

Description

Double-color mold

Technical Field

The invention belongs to the technical field of injection molds, and particularly relates to a double-color mold.

Background

The double-color mold is a mold which is formed by injecting two plastic materials on the same injection molding machine in two times, but the product is only demoulded once. Generally, the first injection molding is used for hard glue, and the second injection molding is used for soft glue. The double-color mold with the internal core pulling structure is required to rotate after a first injection molding product and then carry out second injection molding, ejection is not required during the first injection molding product, and the first injection molding product is always kept still before the mold opening is completed during the second injection molding.

At present, a double-color mold mainly adopts a hydraulic structure for core pulling, the hydraulic core pulling mechanism consists of a slide block and a hydraulic cylinder, the matching of an injection molding machine is needed, the structure is complex, and the production cost is high; the distance of the core pulling of the mold is long, and the used hydraulic cylinder is also long, so that the size of the assembled mold is too large, the mold is inconvenient to mount or dismount on an injection molding machine, and the transportation is inconvenient; in addition, the power of the hydraulic cylinder comes from the hydraulic pressure of the injection molding machine, and online debugging is very inconvenient.

Disclosure of Invention

The invention aims to solve the technical problem of providing a double-color mold which is convenient to use, low in cost and reliable in core pulling action.

In order to solve the technical problems, the invention adopts the following technical scheme:

a double-color die comprises a first front die assembly, a second front die assembly and a rear die assembly, wherein the first front die assembly comprises a first front die plate and a first front die arranged on the first front die plate, the second front die assembly comprises a second front die plate and a second front die arranged on the second front die plate, the rear die assembly comprises a rear die plate, a rear die arranged on the rear die plate and a slide block, a loose core is arranged on the slide block, the outer side surface of the slide block is an inclined surface, a driving block matched with the slide block and driving the slide block to slide inwards is arranged on one side of the first front die plate, elastic mechanisms are symmetrically arranged at the left end and the right end of the inclined surface of the slide block, an inclined sliding groove is formed between each elastic mechanism and the slide block, a pulling block is arranged on one side of the second front die plate and clamped and matched with the inclined sliding groove in a sliding manner, and the slide block outwards performs a core pulling action when moving upwards along with the pulling block under the action of the elastic mechanisms; the elastic mechanism comprises an inner sliding rod, an outer sliding block and a spring, wherein the outer sliding block and the spring are connected to the outer side of the inner sliding rod; the width of the driving block is smaller than the distance between the inner ends of the two inclined chutes; the above-mentioned take out from a piece bottom width slightly be less than between two oblique spout outer ends apart from, take out from a piece upper portion and middle part width all be greater than between two oblique spout outer ends apart from.

Preferably, the inner slide bar and the outer slide block are of an integral structure.

Preferably, the outer side of the front end of the inner slide bar is provided with an inner slide bar notch, and a limiting pressing block fixedly connected with the slide block is arranged at the notch of the inner slide bar.

Preferably, the rear end of the inner sliding rod extends into the transverse sliding groove corresponding to the protruding part.

Preferably, the inner side of the front end of the outer sliding block is provided with an outer sliding block notch, and the outer sliding block notch and the outer side surface of the slide sliding block form an inclined sliding groove.

Preferably, the slide block and the protrusion are of an integral structure.

Compared with the prior art, the invention has the following remarkable effects:

the double-color mold is reasonable and simple in structural design and low in cost, the core pulling action can be realized through normal mold opening action by arranging the pulling-off block and the elastic mechanism on the pulling-off sliding block, the mold is reliable in operation, the core pulling is not required to be carried out by adopting a hydraulic structure, and the double-color mold is very convenient to use and maintain.

Drawings

FIG. 1 is a schematic view of the internal structure of a first front mold assembly and a rear mold assembly in a mold closing state according to the present invention;

FIG. 2 is a schematic view of the internal structure of the first front mold assembly and the rear mold assembly in a closed state according to the present invention;

FIG. 3 is a schematic view of the internal structure of the first front mold assembly and the rear mold assembly in the mold opening state;

FIG. 4 is a schematic view of the internal structure of a second front mold assembly and a second rear mold assembly in a mold-closed state according to the present invention;

FIG. 5 is a schematic view of the internal structure of a second front mold assembly and a rear mold assembly in a closed state according to the present invention;

FIG. 6 is a schematic view of the internal structure of a second front mold assembly and a rear mold assembly of the present invention in the open state;

FIG. 7 is a schematic view of a three-dimensional structure of the slide block, the core pulling and elastic mechanism in the installation state of the invention;

FIG. 8 is a schematic view of the three-dimensional structure of the inner slide bar and the outer slide block of the present invention;

FIG. 9 is a schematic view of the internal structure of the driving block, slide block and elastic mechanism of the present invention in a top view;

FIG. 10 is a schematic view of the internal structure of the pulling-out block, the slide block and the elastic mechanism of the present invention in a top view.

Description of the drawings:

1 first front mould assembly 11 first front mould 12 first front mould 13 driving block 2 second front mould assembly 21 second front mould 23 back mould assembly 31 back mould assembly 32 back mould 33 slide block 331 horizontal slide slot 332 bulge 34 core pulling 4 elastic mechanism 40 inclined slide slot 41 inner slide bar 411 inner slide bar slot 42 outer slide bar 43 spring 5 limit press block.

Detailed Description

For the understanding of those skilled in the art, the structural principles of the present invention will be described in further detail below with reference to specific embodiments and the attached drawings, wherein:

as shown in fig. 1-10, a double-color mold includes a first front mold assembly 1, a second front mold assembly 2 and a rear mold assembly 3, the first front mold assembly 1 includes a first front mold plate 11 and a first front mold 12 mounted on the first front mold plate 11, the second front mold assembly 2 includes a second front mold plate 21 and a second front mold 22 mounted on the second front mold plate 21, the rear mold assembly 3 includes a rear mold plate 31, a rear mold 32 mounted on the rear mold plate 31 and a slide block 33, the slide block 33 is slidably connected to the rear mold plate 31, and a core pulling 34 is mounted on the slide block 33; the left end and the right end of the inclined plane of the slide block 33 are symmetrically provided with an elastic mechanism 4, and an inclined chute 40 is formed between the elastic mechanism 4 and the slide block 33.

In this embodiment, the outer side surface of the slide block 33 is an inclined surface, one side of the first front template 11 is provided with a driving block 13 matched with the slide block 33, and the width of the driving block 13 is smaller than the distance between the inner ends of the two inclined chutes 40, as shown in fig. 1 and 9; when the first front mold assembly 1 works, the driving block 13 moves downwards along with the first front mold plate 11, in the process of closing the first front mold 12 and the rear mold 32, the driving block 13 drives the slide block 33 to slide inwards through the matching of the slide block 33 and the slide surface of the slide block 33, namely, the driving block 13 directly acts on the slide surface of the slide block 33, after the slide block 33 slides in place, the driving block 13 presses the slide block 33, then, the plastic is injected by the injection molding machine, and the first molding injection molding is completed, as shown in fig. 2; after the first injection, the first front mold 12 is separated, and since the driving block 13 and the slide block 33 are only in surface contact, and the driving block 13 is not connected with the elastic mechanism 4, the driving block 13 moves upwards along with the first front mold plate 11, and the slide block 33 is kept stationary, as shown in fig. 3.

As shown in fig. 7-8, the elastic mechanism 4 includes an inner sliding rod 41, an outer sliding block 42 connected to the outer side of the inner sliding rod 41, and a spring 43, wherein a horizontal sliding slot 331 is provided on the inclined surface of the slide block 33, and the inner sliding rod 41 is transversely installed in the horizontal sliding slot 331; in order to ensure that the inner slide bar 41 slides smoothly in the transverse slide groove 331, an inner slide bar notch 411 is arranged on the outer side of the front end of the inner slide bar 41, a limiting pressing block 5 is arranged at the position of the inner slide bar notch 411, and the limiting pressing block 5 is fixedly connected with the slide block 33; and the rear end of the inner slide bar 41 extends into the transverse slide slot 411 corresponding to the protruding part 332, and under the combined action of the limiting pressing block 5 and the protruding part 332, the inner slide bar 41 cannot be separated from the transverse slide slot 331 in the direction of the inclined plane of the slide block 33. The two ends of the inclined plane of the slide block 33 are extended with a convex part 332, and the spring 43 is arranged between the outer slide block 42 and the inner side of the convex part 332. Here, the inner slide rod 41 and the outer slide block 42 are integrated, and the protrusion 332 and the slide block 33 are also integrated, so as to facilitate the manufacturing, ensure the connection reliability of the elastic mechanism 4 and the slide block 33, and ensure the reliability of the movement of the elastic mechanism 4; when the two outer sliders 42 are pressed by an external force, the outer slider 42 compresses the spring 43, and the inner slide bar 41 and the outer slider 42 move outward together.

In this embodiment, the inner side of the front end of the outer slider 42 is provided with an outer slider slot, the outer slider slot and the outer side surface of the slide block 33 form an inclined sliding groove 40, one side of the second front template 21 is provided with a drawing block 23, the mounting position of the drawing block 23 corresponds to the mounting position of the driving block 13, the width of the bottom of the drawing block 23 is slightly smaller than the distance between the outer ends of the two inclined sliding grooves 40, the widths of the upper part and the middle part of the drawing block 23 are both greater than the distance between the outer ends of the two inclined sliding grooves 40, so as to ensure that the drawing block 23 can be smoothly inserted into the inclined sliding groove 40, and the drawing block 23 is in clamping sliding fit with the inclined sliding groove 40.

When the rear mold 2 is rotated for the second injection molding, as shown in fig. 4; the drawing block 23 moves downwards along with the second front template 21, the lower part of the drawing block 23 is firstly inserted into the inclined chute 40 in the process of closing the second front mold 22 and the rear mold 32, the upper part of the drawing block 23 and the middle part of the drawing block 23 extrude the outer slide block 42, the compression spring, the inner slide rod 41 and the outer slide block 42 move outwards together in the downward process of the drawing block 23, the elastic mechanism 4 gives an internal contraction force to the drawing block 23, and after the drawing block 23 moves downwards in place, the injection molding machine injects glue to complete the secondary molding injection molding, as shown in figure 5; after the second injection molding is completed, a mold opening action is performed, the pulling-off block 23 moves upwards along with the second front mold plate 21, the pulling-off block 23 drives the elastic mechanism 4 to move outwards in the upward process, the elastic mechanism 4 drives the slide block 33 to perform a core pulling action outwards, and after the pulling-off block 23 moves upwards in place, the core pulling action of the slide block 33 is also completed.

The core-pulling mechanism has the advantages of reasonable and simple structural design, low cost, no need of adopting a hydraulic structure for core pulling, realization of core-pulling action through normal die opening action, reliable operation of the die, and very convenient use and maintenance.

The above-described embodiments are preferred embodiments of the present invention, and are not intended to be exhaustive or to limit the invention to the precise forms disclosed, and other modifications and variations may be resorted to without departing from the scope of the invention.

Claims

1. The utility model provides a double-colored mould, includes first front mould subassembly (1), second front mould subassembly (2) and back mould subassembly (3), first front mould subassembly includes first front mould board (11) and installs first front mould (12) on first front mould board, second front mould subassembly includes second front mould board (21) and installs second front mould (22) on the second front mould board, back mould subassembly includes back template (31), installs back mould (32) and the position slider (33) of going on the back template, goes to install on the position slider and looses core (34), its characterized in that: the outer side surface of the slide block is an inclined surface, one side of the first front template is provided with a driving block (13) which is matched with the slide block and drives the slide block to slide inwards, the left end and the right end of the inclined surface of the slide block are symmetrically provided with an elastic mechanism (4), an inclined sliding groove (40) is formed between the elastic mechanism and the slide block, one side of the second front template is provided with a drawing block (23), the drawing block is clamped and matched with the inclined sliding groove in a sliding manner, and the slide block moves outwards when moving upwards along with the drawing block under the action of the elastic mechanism; the elastic mechanism comprises an inner sliding rod (41), an outer sliding block (42) and a spring (43), the outer sliding block (42) is connected to the outer side of the inner sliding rod, a transverse sliding groove (331) is formed in the inclined plane of the slide block at the slide position, the inner sliding rod is transversely installed in the transverse sliding groove, protruding portions (332) are arranged at two ends of the inclined plane of the slide block at the slide position in an extending mode, and the spring is arranged between the outer sliding block and the inner side of the protruding portions; the width of the driving block is smaller than the distance between the inner ends of the two inclined chutes; the width of the bottom of the drawing block is slightly smaller than the distance between the outer ends of the two inclined sliding grooves, and the width of the upper part and the width of the middle part of the drawing block are both larger than the distance between the outer ends of the two inclined sliding grooves.

2. The bi-color mold of claim 1, wherein: the inner sliding rod and the outer sliding block are of an integrated structure.

3. The bi-color mold of claim 1, wherein: an inner slide bar notch (411) is arranged on the outer side of the front end of the inner slide bar, and a limiting pressing block (5) fixedly connected with the slide block is arranged at the notch of the inner slide bar.

4. The bi-color mold of claim 1, wherein: the rear end of the inner sliding rod extends into the transverse sliding groove corresponding to the protruding part.

5. The bi-color mold of claim 1, wherein: the outer slider front end inboard is equipped with outer slider and lacks the groove, and outer slider lacks the groove and forms oblique spout with slide slider lateral surface.

6. The bi-color mold of claim 1, wherein: the slide block and the bulge are of an integral structure.