CN111645275A

CN111645275A - Cover body rapid forming injection mold and sideslip insert mechanism thereof

Info

Publication number: CN111645275A
Application number: CN202010508657.4A
Authority: CN
Inventors: 刘展
Original assignee: Zhejiang Taixin Plastic Mould Co ltd
Current assignee: Zhejiang Taixin Plastic Mould Co ltd
Priority date: 2020-06-06
Filing date: 2020-06-06
Publication date: 2020-09-11

Abstract

The invention discloses a cover body rapid molding injection mold, which is characterized in that: the device comprises a front die, a rear die and a side-slipping insert mechanism; the mould is characterized in that a front mould core is arranged in the front mould, a rear mould core and a mould core group are arranged in the rear mould, a cover body cavity with a transverse flow channel forming cavity and a vertical flow channel forming cavity is formed between the front mould core, the rear mould core, the mould core group and a first insert and a second insert of the side-sliding insert mechanism, and the transverse flow channel forming cavity is communicated with the vertical flow channel forming cavity. The side-slipping mold insert mechanism is convenient and fast in mold opening and mold closing, can quickly form a mold cavity, is convenient for quick molding of an injection molding piece, can quickly separate from the mold cavity in the mold opening process, and is convenient for quick demolding of the injection molding piece.

Description

Cover body rapid forming injection mold and sideslip insert mechanism thereof

Technical Field

The invention relates to an injection mold, in particular to a cover body rapid forming injection mold and a side-slipping insert mechanism thereof.

Background

An injection mold is a tool for producing plastic products and also a tool for giving the plastic products complete structure and precise dimensions. Injection molding is a process used to mass produce parts of some complex shapes. Specifically, the plastic melted by heating is injected into a mold cavity from an injection molding machine at high pressure, and a formed product is obtained after cooling and solidification.

The injection mold in the prior art can only inject some conventional bottle cap bodies, but cannot inject the bottle cap bodies with the curved flow channels, so that the bottle cap bodies with the curved flow channels on the market are troublesome to produce and high in production cost.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a cover body rapid forming injection mold and a sideslip insert mechanism thereof, which can rapidly inject a cover body with a curved runner.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a side slip mold insert mechanism which characterized by: the automatic positioning device comprises a bottom plate, a rear side sliding block, a front side sliding block, an insert assembly, an inclined guide rod and an elastic limiting assembly;

the rear side sliding block is in sliding fit with the bottom plate, a first limiting hole and a second limiting hole which extend forwards and backwards and are arranged left and right are formed in the rear side sliding block, a first limiting pin and a second limiting pin are movably arranged in the first limiting hole and the second limiting hole, the front end of the first limiting pin is a triangular inclined guide surface, and the rear end of the second limiting pin is an inclined guide surface;

the elastic limiting assembly comprises a first elastic group and a second elastic group, the first elastic group penetrates through the bottom plate and pushes towards the rear side sliding block, and can enter the first limiting hole and push the front end of the unloaded first limiting pin out of the rear side sliding block; the second elastic group is arranged on the front side sliding block, pushes towards the rear side sliding block and can push the rear end of the second limiting pin into a positioning groove formed in the bottom plate;

the insert assembly comprises a first insert and a second insert, the first insert is fixed on the rear side sliding block, the second insert is of an arc structure, a connecting pin and a hinged arm extending towards the circle center of the second insert are arranged at the tail end of the second insert, and the hinged arm is hinged to the first insert;

the front side sliding block is in sliding fit with the rear side sliding block, the rear side face of the front side sliding block is provided with a guide groove and an avoiding groove, the guide groove is matched with the connecting pin, when the front side sliding block moves relative to the rear side sliding block, the guide groove drives the second insert to rotate around a hinge point of the hinge arm, the avoiding groove corresponds to the first limiting pin, and in the moving process of the front side sliding block relative to the rear side sliding block, the groove wall of the avoiding groove can press the front end of the first limiting pin into the first limiting hole and press the first elastic group out of the first limiting hole;

the front side sliding block is provided with an oblique guide hole, the rear side sliding block is provided with an avoiding opening, and the oblique guide hole corresponds to the avoiding opening in the front-back direction and is used for the oblique guide rod to penetrate through.

Preferably, the first elastic group and the second elastic group both comprise a pressing block and a spring, and the spring is arranged at the end part of the pressing block and can press the pressing block to the rear side sliding block.

Preferably, the diameter of the pressing block is larger than the diameters of the first limiting hole and the second limiting hole, and a protruding part capable of extending into the first limiting hole or the second limiting hole is arranged at one end, back to the spring, of the pressing block.

Preferably, the side walls of the first limiting pin and the second limiting pin are provided with limiting strips, and the inner side walls of the first limiting hole and the second limiting hole are provided with limiting grooves for matching the limiting strips.

Preferably, the second insert has two parts and is symmetrically disposed on the first insert.

Preferably, the rear side surface of the front side slider has a first step, and the front side surface of the rear side slider has a second step matching with the first step.

The utility model provides a lid rapid prototyping injection mold, characterized by: the device comprises a front die, a rear die and a side-slipping insert mechanism; the front mold is provided with a front mold core, the rear mold is provided with a rear mold core and a mold core group, a cover body cavity with a transverse flow channel molding cavity and a vertical flow channel molding cavity is formed among the front mold core, the rear mold core, the mold core group, the first mold insert and the second mold insert, and the transverse flow channel molding cavity is communicated with the vertical flow channel molding cavity.

Preferably, the mold core group includes mold core and ejector pin, have the through-hole in the mold core, the front end of through-hole has the widening district, the ejector pin cooperates in the through-hole to the front end of ejector pin forms vertical runner molding chamber with the widening district.

The invention has the advantages that: the mold opening and closing are convenient, the cavity can be formed quickly, the injection molding part can be molded quickly, the side-slipping mold insert mechanism can be separated from the cavity quickly in the mold opening process, and the injection molding part can be rapidly demolded conveniently.

Drawings

Fig. 1 is a schematic view of a cover rapid-forming injection mold provided in this embodiment;

FIG. 2 is a schematic view of the side-slipping insert mechanism provided in the present embodiment;

FIG. 3 is another schematic view of the side-slipping insert mechanism provided in the present embodiment;

FIG. 4 is a top view of the side-slipping insert mechanism provided in the present embodiment;

fig. 5 is a schematic view of a second insert provided in this embodiment;

FIG. 6 is a schematic diagram of a rear slider provided in this embodiment;

FIG. 7 is a schematic view of the guide groove provided in the present embodiment on the front slider;

fig. 8 is a schematic view of the injection molded part provided in the present embodiment.

Detailed Description

The fast molding injection mold for cap and the side-slipping insert mechanism thereof according to the present invention will be further described with reference to fig. 1 to 8.

The utility model provides a lid rapid prototyping injection mold, characterized by: the mold comprises a front mold 1, a rear mold 2 and a side-slipping insert mechanism 3.

The front die 1 is provided with a front die core 11, the rear die 2 sequentially comprises a push plate 21, a backing plate 22, a fixing plate 23, a supporting plate 24 and a rear bottom plate 25 from front to back, a moving cavity 26 is formed among the fixing plate 23, the supporting plate 24 and the rear bottom plate 25, and a top plate 27 is arranged in the moving cavity 26. A rear mold core 211 and a mold core group 212 are embedded in the mounting groove of the push plate 21. A cavity is formed among the front die core, the rear die core and the die core group.

The side-slipping insert mechanism 3 comprises a bottom plate 33, a rear side slide block 32, a front side slide block 31, an insert assembly 35, a bevel guide rod 36 and an elastic limiting assembly 34.

The bottom plate 33 is fixed in the groove at the front side of the push plate 21 by a bolt, the outer side of the bottom plate 33 is provided with a positioning groove 331, the outer side groove wall 3312 of the positioning groove 331 is vertically arranged, and the inner side groove wall 3311 is obliquely arranged.

The rear slider 32 is slidably fitted to the base plate 33, and the rear slider 32 has a first limiting hole 324 and a second limiting hole 325 extending forward and backward and arranged left and right, the first limiting hole and the second limiting hole are respectively movably fitted with a first limiting pin 321 and a second limiting pin 322, the front end of the first limiting pin 321 is a triangular inclined guide surface 3211, and the rear end of the second limiting pin 322 is an inclined guide surface 3221.

The elastic limit component 34 comprises a first elastic group 341 and a second elastic group 342, the first elastic group 341 is fixed between the push plate 21 and the bottom plate 33, and the front end of the first elastic group 341 passes through the bottom plate 33 and pushes towards the rear side slide block 32, can enter into the first limit hole and can push the front end of the unloaded first limit pin 321 out of the rear side slide block 32; the second elastic set 342 is disposed on the front slider 31 and pushes toward the rear slider 32, and pushes the rear end of the second stopper pin 322 into the positioning slot 331 on the bottom plate 33 when the rear slider 32 slides outward.

The insert assembly 35 includes a first insert 352 and a second insert 351, the first insert 352 is fixed on the rear slide 32 by bolts, a receiving groove 3521 for receiving the second insert 351 is formed in a front side wall of the first insert 352, the second insert 351 is of an arc-shaped structure, a connecting pin 3511 and a hinge arm 3512 extending towards the center of the second insert 351 are arranged at a tail end of the second insert 351, and the hinge arm 3512 is hinged in the receiving groove of the first insert 352.

The front slider 31 is slidably fitted to the rear slider 32, the rear side surface of the front slider 31 has a guide groove 311 and an escape groove 312, the guide groove 311 is fitted to the upper end of the connecting pin 3511, and when the front slider 31 moves relative to the rear slider 32, the guide groove 311 drives the second insert 351 to rotate about the hinge arm 3512, so that the second insert 351 enters and exits the cavity, and when the second insert 351 enters the cavity, an arc-shaped transverse flow passage molding cavity can be formed in the cavity. The avoiding groove 312 corresponds to the first limit pin 321, and after the front slider 31 moves outwards for a certain distance relative to the rear slider 32, the groove wall 3121 of the avoiding groove 312 can press the front end of the first limit pin 321 into the first limit hole and press the first elastic assembly 341 out of the first limit hole.

The front side slider has an inclined guide hole 313, the base plate 33 and the rear side slider have an escape opening 326, the inclined guide hole and the escape opening 324 correspond to each other in the front-rear direction and allow the inclined guide rod 36 to pass through, and the rear end of the front guide rod is fixed in the front mold 1.

A cover body cavity with a transverse flow channel forming cavity and a vertical flow channel forming cavity is formed among the front mold core, the rear mold core, the mold core group, the first mold insert 352 and the second mold insert 351, the transverse flow channel forming cavity is communicated with the vertical flow channel forming cavity, and the transverse flow channel forming cavity and the vertical flow channel forming cavity can form a transverse curved flow channel 41 and a vertical flow channel 42 in the injection molding piece.

In a mold closing state, the front side slide block 31, the rear side slide block 32 and the insert assembly 35 are positioned at the innermost side of the sideslip range, and a cover body cavity with a transverse flow channel molding cavity and a vertical flow channel molding cavity is formed among the front mold core 11, the rear mold core 211, the mold core group 212, the first insert 352 and the second insert 351 in the state so as to mold a cover body; meanwhile, the first elastic group 341 corresponds to the first limit hole, and the front end part of the first elastic group 341 is located in the first limit hole to limit the sliding of the rear slider 32; the connecting pin 3511 is located at an outer end position 3112 of the guide groove 311.

When the mold is opened, the injection molding machine drives the rear mold 2 to move relative to the front mold 1, the inclined guide rod 36 drives the front side slide block 31 to move outwards through matching with the inclined guide hole, and the guide groove 311 of the front side slide block 31 pulls the second insert 351 to rotate back to the cavity through the connecting pin 3511 so as to pull the second insert 351 out of the cavity; when the second insert 351 is separated from the cavity, the hinge arm 3512 of the second insert 351 is attached to the inner wall 35211 of the accommodating groove 3521 and cannot continuously rotate outwards, meanwhile, the upper end of the connecting pin 3511 also slides to the inner end 3111 of the guide groove 311 and cannot continuously slide, the inner groove wall 3121 of the avoiding groove 312 contacts with the front end of the first limit pin 321, the first limit pin 321 is pressed into the first positioning hole, the first elastic group 341 is extruded out of the first limit hole by the rear end of the first limit pin, and the rear slide block 32 is unlocked; therefore, when the inclined guide rod 36 drives the front slide block 31 to slide outwards, the front slide block 31 drives the insert assembly 35 and the rear slide block 32 to move outwards synchronously, so that the first insert 352 is separated from the cavity, and the injection molded part 4 can be smoothly demolded. When the front side slider 31 moves relative to the rear side slider 32, the second elastic set 342 moves to the position corresponding to the second limit pin 322, the front side slider 31 and the rear side slider 32 move synchronously, and when the rear side slider 32 moves to the position where the second limit pin 322 corresponds to the positioning groove 331, the rear end of the second elastic set 342 enters the second limit hole and pushes the second limit pin 322 to enter the positioning groove 331, so that the rear side slider 32 is limited, and the rear side slider 32 is prevented from moving outwards excessively.

During die assembly, the inclined guide rod 36 drives the front side slide block 31 to slide inwards, and the front side slide block 31 drives the rear side slide block 32 to synchronously move inwards as the rear end part of the second elastic group 342, namely the boss part 6, is positioned in the second limiting hole; in the synchronous movement process, after the rear end of the second stopper pin 322 passes through the inclined groove wall 3311 of the positioning groove 331, the second stopper pin 322 is separated from the positioning groove 331, and the rear slider 32 slides in place; the second limit pin 322 pushes the second elastic set 342 out of the second limit hole, so that the front slider 31 slides independently relative to the rear slider 32, and the guide slot 311 drives the first insert 352 to rotate reversely into the cavity through the connecting pin 3511, thereby forming a transverse runner molding cavity.

In the structure, the mold opening and the mold closing are convenient, the cavity can be quickly formed, the injection molding part 4 can be quickly molded, and the side-slipping mold insert mechanism 3 can be quickly separated from the cavity in the mold opening process, so that the injection molding part 4 can be quickly demolded.

The side facing the cavity is an inner side, the side facing away from the cavity is an outer side, the side facing the front mold is a front end, and the side facing away from the front mold is a rear end.

Further, each of the first elastic group 341 and the second elastic group 342 includes a

pressing piece

3411, 3421 and a

spring

3412, 3422, which is provided at an end of the pressing piece and can press the pressing piece toward the rear slider 32. In the first elastic group 341, the spring 3412 is installed in the push plate 21, the rear end of the pressing block 3411 is located in the push plate 21, and the front end of the pressing block penetrates through the bottom plate 33 and abuts against the rear side wall of the rear side sliding block 32 or enters into the first limit hole; in the second elastic set 342, the spring 3422 is installed in the front slider 31, the front end of the pressing block 3421 is located in the front slider 31, and the rear end abuts against the front sidewall of the rear slider 32 or enters the second limiting hole. Through the structural arrangement of the first elastic group 341 and the second elastic group 342, the front slider 31 and the rear slider 32 can be successively opened and reset.

Furthermore, the diameter of the pressing block is larger than the diameters of the first limiting hole and the second limiting hole, and a protruding portion 6 capable of extending into the first limiting hole or the second limiting hole is arranged at one end, back to the spring, of the pressing block. Under the structure. Can inject the degree of depth that the briquetting got into first spacing hole or the spacing hole of second to guarantee the stability that whole side slipping insert mechanism 3 sideslips.

Further, the side walls of the first limiting pin 321 and the second limiting pin 322 are provided with limiting strips 3211, the inner side walls of the first limiting hole and the second limiting hole are provided with limiting grooves 323, under the structure, the first limiting pin and the second limiting pin can be limited in the first limiting hole and the second limiting hole respectively, the problem that the limiting pins are separated from the limiting holes is avoided, and the stability of the side-sliding insert mechanism 3 is improved.

Further, the second insert members 351 are provided in two and are symmetrically disposed on the first insert member 352. Under this structure, can form two horizontal runner molding chambers on injection molding 4 in step.

Further, the rear side surface of the front slider 31 has a first step 316, and the front side surface of the rear slider 32 has a second step matching with the first step. The setting of first step and second step can play limiting displacement to front side slider 31, prevents that front side slider 31 from moving inwards excessively.

Further, the mold core set comprises a mold core 2122 and a push rod 2121, a through hole is formed in the mold core, a widening area is formed at the front end of the through hole, the push rod is fitted in the through hole, and the front end of the push rod and the widening area form a vertical flow channel forming cavity 7. Under this structure, can realize the shaping of vertical runner, can be ejecting through this ejector pin with injection molding 4 after the shaping again for the quick formation of die cavity, and the quick drawing of patterns of injection molding 4.

Unless otherwise specified, in the present invention, if there is an orientation or positional relationship indicated by terms of "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.

Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass, for example, being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. The utility model provides a side slip mold insert mechanism which characterized by: the automatic positioning device comprises a bottom plate, a rear side sliding block, a front side sliding block, an insert assembly, an inclined guide rod and an elastic limiting assembly;

2. The slide insert mechanism according to claim 1, wherein: the first elastic group and the second elastic group both comprise pressing blocks and springs, and the springs are arranged at the end parts of the pressing blocks and can press the pressing blocks to the rear side sliding blocks.

3. The slide insert mechanism according to claim 2, wherein: the diameter of the pressing block is larger than the diameters of the first limiting hole and the second limiting hole, and a protruding portion capable of extending into the first limiting hole or the second limiting hole is arranged at one end, back to the spring, of the pressing block.

4. The slide insert mechanism according to claim 3, wherein: the side walls of the first limiting pin and the second limiting pin are provided with limiting strips, and the inner side walls of the first limiting hole and the second limiting hole are provided with limiting grooves for matching the limiting strips.

5. The slide insert mechanism according to claim 1, wherein: the two second inserts are symmetrically arranged on the first insert.

6. The slide insert mechanism according to claim 1, wherein: the back side surface of the front side sliding block is provided with a first step, and the front side surface of the back side sliding block is provided with a second step matched with the first step.

7. The utility model provides a lid rapid prototyping injection mold, characterized by: comprising a front mold, a back mold and the side-slip insert mechanism of any of claims 1-6; the front mold is provided with a front mold core, the rear mold is provided with a rear mold core and a mold core group, a cover body cavity with a transverse flow channel molding cavity and a vertical flow channel molding cavity is formed among the front mold core, the rear mold core, the mold core group, the first mold insert and the second mold insert, and the transverse flow channel molding cavity is communicated with the vertical flow channel molding cavity.

8. The cover body rapid prototyping injection mold of claim 7, the mold core set comprises a mold core and a push rod, a through hole is arranged in the mold core, the front end of the through hole is provided with a widening area, the push rod is fitted in the through hole, and the front end of the push rod and the widening area form a vertical flow channel forming cavity.