CN219522907U

CN219522907U - Flip core-pulling die

Info

Publication number: CN219522907U
Application number: CN202320165642.1U
Authority: CN
Inventors: 陈炎; 苏朋龙; 黄经浮
Original assignee: Dongguan Dongxin Mould Co ltd
Current assignee: Dongguan Dongxin Mould Co ltd
Priority date: 2023-02-09
Filing date: 2023-02-09
Publication date: 2023-08-15
Anticipated expiration: 2033-02-09

Abstract

The utility model discloses a flip core-pulling mold, which relates to the technical field of injection molds, wherein molten plastic ejected from a nozzle hole of an injection molding machine is firstly communicated with a cavity and then flows into the cavity, and a molded product is obtained after cooling; the air grains generated by the reason that the nozzle hole is too small, the material droops or is drawn at the nozzle, the nozzle hole is provided with barriers or burrs and the like are transferred to the forming part in the communicating cavity, so that the air grains of the forming product in the cavity are reduced, and the quality of the forming product is ensured to be better; the communication cavity is arranged behind the slide insert, so that the width occupied by the slide insert is overlapped with the width occupied by the communication cavity, the whole width is reduced, the material consumption for preparing the flip core-pulling die is effectively reduced, and the preparation cost is reduced; after the die is opened, the inclined guide post drives the slide insert to move outwards, so that the communicating cavity is in an open state after the die is opened, and the molded part in the communicating cavity is more convenient to take out.

Description

Flip core-pulling die

Technical Field

The utility model relates to the technical field of injection molds, in particular to a flip core-pulling mold.

Background

Injection molding dies generally refer to dies used to injection mold finished products. Injection molding, also known as injection molding, is a method of injection and molding. The injection molding method has the advantages of high production speed, high efficiency, automation in operation, multiple patterns, various shapes, large size, accurate product size, easy updating of the product, and capability of forming parts with complex shapes, and is suitable for the field of mass production, products with complex shapes and other molding processing.

When preparing flat plastic shell or similar flat plastic shell, the water gap is arranged on the side edge of the cavity as much as possible, so that the influence of the water gap on the surface attractiveness of the flat plastic shell is reduced. In order to avoid the reasons that the nozzle hole is too small, the material drips or is drawn at the nozzle, the nozzle hole has barriers or burrs and the like: causing air streaks to occur in the area of the molded product near the nozzle hole of the injection molding machine. The mold is also provided with a communication cavity corresponding to the side edge of the cavity, the glue injected from the nozzle hole of the injection molding machine enters the communication cavity again, the communication cavity is used for performing a transition function, the molding part with air patterns in the communication cavity is unnecessary waste material by transferring the air patterns from the cavity to the communication cavity, and the molding part can be removed from the molding product in the subsequent processing procedure, so that the quality of the molding product is ensured to be better.

Because the water gap has the requirement of setting up on the side of die cavity, the intercommunication chamber can not be designed into and corresponds from top to bottom (when going up mould, lower mould) with the die cavity, or when corresponding from front to back (when preceding mould, back mould), the intercommunication chamber can only juxtapose (width direction) setting with the die cavity, consequently, when designing this kind of injection mold, need reserve the space of intercommunication chamber, this directly leads to the whole width increase of mould, and when the product that needs the preparation is bigger, the width that the intercommunication chamber took just is bigger.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a technical scheme capable of solving the problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the flip core pulling mold comprises an A plate, a B plate and a slide mechanism, wherein the slide mechanism comprises a slide insert and an inclined guide post, the slide insert is provided with an inclined insertion hole matched with the inclined guide post, the inclined guide post is arranged on the A plate, the slide insert is arranged on the B plate, the slide insert is provided with an insert small block for forming part of a product, the A plate is provided with a front mold core, the B plate is provided with a rear mold core, and the front mold core, the rear mold core and the slide insert are assembled to form a cavity; the rear mold core is also provided with a groove communicated with the side edge of the cavity, and when the front mold core, the rear mold core and the slide insert are assembled to form the cavity, the slide insert and the inner wall of the groove form a communication cavity communicated with the side edge of the cavity, one part of the communication cavity is positioned behind the slide insert, and the other part of the communication cavity is positioned between the rear mold core and the side surface of the slide insert corresponding to the cavity; the nozzle hole for injecting glue is arranged on the rear mould core and corresponds to the communication cavity positioned at the rear of the slide insert.

As a further scheme of the utility model: the slide mechanism further comprises a shovel machine arranged on the A plate, one side, far away from the cavity, of the slide insert is an inclined plane, and the shovel machine is provided with a positioning inclined plane matched with the inclined plane of the slide insert; when the die is assembled, the positioning inclined plane of the shovel abuts against the inclined plane of the slide insert, so that the slide insert is abutted against the forming cavity.

As a further scheme of the utility model: a hemispherical positioning groove is formed on the rear side surface of the slide insert, and the position of the hemispherical positioning groove on the rear side surface of the slide insert is free from intersection with the position on the rear side surface of the slide insert corresponding to the communication cavity; and a spring ball plunger corresponding to the hemispherical positioning groove is arranged on the front side surface of the B plate, and after the die is assembled, the positioning ball head of the spring ball plunger is tightly propped against the hemispherical positioning groove.

As a further scheme of the utility model: the ejector mechanism comprises a driving piece, an ejector plate and an ejector pin arranged on the ejector plate; the ejector pin penetrates through the cavity from the rear direction of the B plate to correspond to the cavity, and the driving piece is arranged on the B plate and used for driving the ejector pin plate forwards and backwards.

As a further scheme of the utility model: the driving piece is a hydraulic cylinder arranged on the B plate, and a telescopic rod of the hydraulic cylinder extends backwards and is connected with the thimble plate.

Compared with the prior art, the utility model has the following beneficial effects:

the communication cavity is arranged behind the slide insert, so that the width occupied by the slide insert is overlapped with the width occupied by the communication cavity, the whole width is reduced, the material consumption for preparing the flip core-pulling die is effectively reduced, and the preparation cost is reduced;

after the die is opened, the inclined guide post drives the slide insert to move outwards, so that the communicating cavity is in an open state after the die is opened, and the molded part in the communicating cavity is more convenient to take out.

Drawings

FIG. 1 is a perspective view of the structure of the present utility model;

FIG. 2 is a front elevational view of the structure of the present utility model;

FIG. 3 is a cross-sectional view of the structure of FIG. 2 taken along the direction A-A;

FIG. 4 is an enlarged schematic view of a part of the structure at C in FIG. 3;

FIG. 5 is another cross-sectional view of the structure of FIG. 2 taken along the direction A-A;

fig. 6 is an enlarged schematic view of a partial structure at D in fig. 5.

Reference numerals and names in the drawings are as follows:

a plate A-1, a front mould core 11,

b plate-2, rear mould core-21,

a row position mechanism-3, a row position insert-31, an inclined guide post-32, a jack-33, a shovel-34 and a positioning inclined plane-341,

the cavity-4 is provided with a cavity,

the connecting cavity-5 is provided with a connecting cavity,

a semi-spherical positioning groove-6,

a spring ball plunger-7,

an ejection mechanism-8, a hydraulic cylinder-801, a thimble plate-802, a thimble-803,

nozzle hole-100.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-6, a flip core-pulling mold comprises an a plate 1, a plate B2 and a slide mechanism 3, wherein the slide mechanism 3 comprises a slide insert 31 and an inclined guide post 32, an inclined insertion hole 33 which is matched with the inclined guide post 32 is formed in the slide insert 31, the inclined guide post 32 is arranged on the plate a 1, the slide insert 31 is slidably arranged on the plate B2, an insert small block which is used for forming a part of a product is arranged on the slide insert 31, a front mold core 11 is arranged on the plate a 1, a rear mold core 21 is arranged on the plate B2, and the front mold core 11, the rear mold core 21 and a part of the slide insert 31 with the insert small block are clamped to form a cavity 4.

The rear mold insert 21 is further provided with a groove communicated with the side edge of the cavity 4, when the front mold insert 11, the rear mold insert 21 and the slide insert 31 are assembled to form the cavity 4, the slide insert 31 and the inner wall of the groove form a communication cavity 5 communicated with the side edge of the cavity 4, one part of the communication cavity 5 is positioned at the rear of the slide insert 31, and the other part of the communication cavity 5 is positioned between the rear mold insert 21 and the side surface of the slide insert 31 corresponding to the cavity 4.

The nozzle hole 100 for injecting glue is provided on the rear mold core 21 and corresponds to the communication cavity 5, and corresponds to the communication cavity 5 located at the rear of the slide insert 31.

The molten plastic injected from the nozzle hole 100 of the injection molding machine is first communicated with the cavity 5 and then flows into the cavity 4, and is cooled to obtain a molded product. Through transferring the air vein generated by the reason that the nozzle hole is too small, the material droops or is drawn at the nozzle, the nozzle hole has barriers or burrs and the like to the forming part in the communicating cavity 5, the air vein of the forming product in the cavity 4 is reduced, and the quality of the forming product is ensured to be better.

Through setting up the rear of line position mold insert 31 with the intercommunication chamber 5, make the width that line position mold insert 31 occupy coincide or overlap to a great extent with the width that the intercommunication chamber 5 occupy to reduce holistic width, effectively reduce the material quantity of this flip-chip loose core mould of preparation, reduce manufacturing cost.

After the die is opened, the inclined guide post 32 drives the slide insert 31 to move outwards, so that the communication cavity 5 is in an open state after the die is opened, and the molded part in the communication cavity 5 is more convenient to take out.

Further, the slide mechanism 3 further comprises a shovel 34 mounted on the a plate 1, an inclined surface is arranged on one side, far away from the cavity 4, of the slide insert 31, and a positioning inclined surface 341 matched with the inclined surface of the slide insert 31 is arranged on the shovel 34; at the time of mold closing, the positioning inclined surface 341 of the shovel 34 abuts against the inclined surface of the slide insert 31, and the slide insert 31 is abutted against the cavity 4. A hemispherical positioning groove 6 is formed on the rear side surface of the slide insert 31, and the position of the hemispherical positioning groove 6 on the rear side surface of the slide insert 31 is not intersected with the position on the rear side surface of the slide insert 31 corresponding to the communication cavity 5; and a spring ball plunger 7 corresponding to the hemispherical positioning groove 6 is arranged on the front side surface of the B plate 2, and after the die is assembled, the positioning ball of the spring ball plunger 7 is propped against the hemispherical positioning groove 6 by an internal spring. The slide insert 31 is subjected to double positioning through the shovel 34, the hemispherical positioning groove 6 and the spring ball plunger 7, so that glue is not easy to run.

The flip core-pulling die is also provided with an ejection mechanism 8, wherein the ejection mechanism 8 comprises a driving piece, an ejector plate 802 and an ejector 803 arranged on the ejector plate 802; the ejector pins 803 penetrate forward from the rear direction of the B plate 2 to correspond to the cavity 4, and the driving member is disposed on the B plate 2 and is used for driving the ejector pins 302 forward and backward, so that the ejector pins can penetrate out of the cavity to eject the molded product out of the cavity. Preferably, the method comprises the steps of,

the driving part is a hydraulic cylinder 801 arranged on the B plate 2, and a telescopic rod of the hydraulic cylinder 801 extends backwards and is connected with an ejector plate 802. After the molded product is molded and opened, the ejector plate 802 is driven to move forward by the hydraulic cylinder 801, so that the ejector pin ejects the molded product.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model 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. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The flip core-pulling die is characterized by comprising an A plate, a B plate and a slide mechanism, wherein the slide mechanism comprises a slide insert and an inclined guide post, the slide insert is provided with an inclined insertion hole which is matched with the inclined guide post, the inclined guide post is arranged on the A plate, the slide insert is arranged on the B plate, the slide insert is provided with an insert small block for forming part of a product, the A plate is provided with a front die core, the B plate is provided with a rear die core, and the front die core, the rear die core and the slide insert are clamped to form a die cavity;

the rear mold core is also provided with a groove communicated with the side edge of the cavity, and when the front mold core, the rear mold core and the slide insert are assembled to form the cavity, the slide insert and the inner wall of the groove form a communication cavity communicated with the side edge of the cavity, one part of the communication cavity is positioned behind the slide insert, and the other part of the communication cavity is positioned between the rear mold core and the side surface of the slide insert corresponding to the cavity;

the nozzle hole for injecting glue is arranged on the rear mould core and corresponds to the communication cavity positioned at the rear of the slide insert.

2. The flip core-pulling mold according to claim 1, wherein the slide mechanism further comprises a shovel mounted on the plate A, wherein an inclined surface is arranged on one side, far away from the cavity, of the slide insert, and a positioning inclined surface matched with the inclined surface of the slide insert is arranged on the shovel; when the die is assembled, the positioning inclined plane of the shovel abuts against the inclined plane of the slide insert, so that the slide insert is abutted against the forming cavity.

3. The flip-chip core pulling mold according to any one of claims 1 to 2, wherein a hemispherical positioning groove is formed on the rear side surface of the slide insert, and a part of the hemispherical positioning groove on the rear side surface of the slide insert is free from intersection with a part on the rear side surface of the slide insert corresponding to the communication cavity;

and a spring ball plunger corresponding to the hemispherical positioning groove is arranged on the front side surface of the B plate, and after the die is assembled, the positioning ball head of the spring ball plunger is tightly propped against the hemispherical positioning groove.

4. The flip-chip core-pulling mold according to claim 1, wherein an ejector mechanism is provided, the ejector mechanism comprising a driving member, an ejector plate, and an ejector pin provided on the ejector plate;

the ejector pin penetrates through the cavity from the rear direction of the B plate to correspond to the cavity, and the driving piece is arranged on the B plate and used for driving the ejector pin plate forwards and backwards.

5. The flip-chip core pulling mold according to claim 4, wherein the driving member is a hydraulic cylinder installed on the B plate, and a telescopic rod of the hydraulic cylinder extends backwards and is connected with the thimble plate.