CN217258134U

CN217258134U - Mould benevolence assembly of shaping major arc product

Info

Publication number: CN217258134U
Application number: CN202221008124.0U
Authority: CN
Inventors: 卢文质; 卢小华
Original assignee: Dg Kaibo Plastic Molding Co ltd
Current assignee: Dg Kaibo Plastic Molding Co ltd
Priority date: 2022-04-27
Filing date: 2022-04-27
Publication date: 2022-08-23
Anticipated expiration: 2032-04-27

Abstract

The utility model belongs to the technical field of injection mold technique and specifically relates to a mould benevolence assembly of shaping major arc product is related to, including front mould benevolence and back mould benevolence, front mould benevolence and back mould benevolence are covered each other and are closed, be provided with half circular product profile modeling groove on the lid face of front mould benevolence, the shaping has the product profile modeling block of inferior arcuation on the lid face of back mould benevolence, still inlay the ejecting mold insert that docks in product profile modeling block on the back mould benevolence, the one end shaping of ejecting mold insert has the major arc compensation piece that links up in product profile modeling block, the upper portion of major arc compensation piece exposes in back mould benevolence, the lower half of major arc compensation piece inlays inside the back mould benevolence, and is provided with major arc compensation clearance between the lower half of major arc compensation piece and the back mould benevolence; the injection moulding that can realize major arc column structure product is with in the same direction as the drawing of patterns, can not lead to drawing of patterns in-process to cause the strain to the product, and can the shaping have the product of fretwork column structure, can reduce the setting of slide mechanism or type core mechanism.

Description

Mould benevolence assembly of shaping major arc product

Technical Field

The utility model belongs to the technical field of the injection mold technique and specifically relates to a mould benevolence assembly of shaping major arc product is related to.

Background

Injection molding, also known as injection molding, is a method of molding by injection and molding. The injection molding method has the advantages of high production speed, high efficiency, automation of operation, various colors, various shapes from simple to complex, small sizes, accurate product size, easy replacement of products, capability of molding products with complex shapes, suitability for the molding processing fields of mass production, products with complex shapes and the like; stirring the completely molten plastic material by a screw at a certain temperature, injecting the plastic material into a mold cavity by high pressure, and cooling and solidifying to obtain a molded product. The method is suitable for mass production of parts with complex shapes, and is one of important processing methods.

The injection molding product needs to use a corresponding injection mold, the injection mold generally comprises a front mold, a rear mold and a mold core assembly assembled between the front mold and the rear mold, the mold core assembly is arranged according to the shape of the product, products with different shapes can have the mold core assembly matched with the structure of the product, the mold core assembly mainly comprises a product profiling cavity formed by combining the front mold core and the rear mold core, and the mold core assembly is also provided with an ejection mechanism or an ejection insert to assist the forming and demolding of the product aiming at some complex products which are inconvenient to demold or are inconvenient to form at a certain part; with diversification of markets, some products introduce some unique creatives in design, so that the structural design is more complicated, at present, when the products with the major arc-shaped structures are manufactured, as shown in fig. 1, the radian of the products is greater than 180 degrees, and direct ejection and demolding are not convenient, the products are ejected out along the vertical direction in a traditional mode, but the dragging degree of the products in the ejection process is larger, in addition, if the products are designed into structures with small radiuses at two ends and large radiuses in the middle, the products cannot be ejected out along the vertical direction, and therefore a new technical means is needed to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an it is not enough to overcome above-mentioned condition, aims at providing the technical scheme that can solve above-mentioned problem.

The utility model provides a mould benevolence assembly of shaping major arc product, including front mould benevolence and back mould benevolence, front mould benevolence and back mould benevolence cover each other and close, be provided with the product profile modeling groove of semicircle form on the face that closes of the lid of front mould benevolence, the shaping has the product profile modeling block of bad arcuation on the face that closes of back mould benevolence, still inlay the ejecting mold insert that docks in the product profile modeling block on the back mould benevolence, the one end shaping of ejecting mold insert has the major arc compensation piece that links up in the product profile modeling block, the upper portion of major arc compensation piece exposes in back mould benevolence, the lower half of major arc compensation piece is inlayed inside the back mould benevolence, and be provided with the major arc compensation clearance between the lower half of major arc compensation piece and the back mould benevolence, be formed with the semicircle clearance between the first portion of product profile modeling groove, product profile modeling block and major arc compensation piece, major arc compensation clearance and semicircle clearance form the product profile modeling cavity of major arc column structure jointly.

Preferably, the ejection insert is obliquely embedded in the rear mold core, an oblique ejection sliding block is arranged at the other end of the ejection insert, a T-shaped horizontal sliding groove is formed in the oblique ejection sliding block, a T-shaped horizontal sliding block matched with the T-shaped horizontal sliding groove is arranged at the other end of the ejection insert, and the ejection insert and the oblique ejection sliding block are in sliding fit through the T-shaped horizontal sliding block and the T-shaped horizontal sliding groove.

Preferably, an ejector pin mechanism is arranged between the butt joint surfaces of the major arc compensation block and the product contour block, the ejector pin mechanism comprises an inclined plane chute arranged on the product contour block, an accommodating groove arranged on the major arc compensation block, a fixing plate arranged in the accommodating groove, a side ejector pin movably connected to the fixing plate, and a reset spring arranged in the accommodating groove and elastically connected to the side ejector pin, one end of the side ejector pin penetrates through the major arc compensation block and is in butt joint with the major arc compensation gap, and the other end of the side ejector pin penetrates through the fixing plate and is in sliding fit with the inclined plane chute.

Preferably, a spring groove used for accommodating the reset spring is formed in the bottom of the accommodating groove corresponding to the major arc compensation block, a spring stop block located in the spring groove is arranged on the side thimble, and the reset spring is elastically matched with the spring stop block.

Preferably, one end of the side thimble, which is butted with the inclined chute, is a spherical surface, and the side thimble is in sliding fit with the inclined chute through the spherical surface.

Preferably, two ends of the product contour block are respectively provided with a limit block butted with the major arc compensation block, and the major arc compensation block is limited between the two limit blocks.

Preferably, the rear mold core is further provided with square ejector rods at two sides corresponding to the ejection inserts, and the square ejector rods are butted at the lower end of the major arc compensation gap.

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

the upper part of the major arc compensation block and the product profiling block jointly form a semicircular structure exposed out of the rear mold core, the lower part of the major arc compensation block is embedded into the rear mold core, a major arc compensation gap is formed between the rear mold core and is used for compensating the part of the product after the product is more than 180 degrees, in the demoulding process, the ejecting insert is directly ejected upwards, so that the inner side of the product is firstly separated from the product profiling block, after the part of the product positioned in the major arc compensation gap is sent out by the ejecting insert, the product is taken down along the side part, by the design, the injection molding and the demolding of the product with the major arc structure can be realized, the product is not damaged by pulling in the demolding process, and the product with a hollow structure can be molded, and the arrangement of a slide mechanism or a core molding mechanism can be reduced.

Through setting up thimble mechanism, in the die sinking in-process, ejecting mold insert up moves, produce sliding fit between messenger ejecting mold insert and the product profile modeling piece, utilize this sliding fit relation, set up an inclined plane spout on the product profile modeling piece, side thimble also slides along the inclined plane spout when making between ejecting mold insert and the product profile modeling piece slide, the side thimble will withstand the product and outwards stretch out this moment, make the product break away from with major arc compensation piece, thereby be convenient for take out of product, when taking out the product and ejecting mold insert moves back, because reset spring's effect will drive the side thimble and move back, make the side thimble get back to original position.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic structural view of a molded product of the present invention;

fig. 2 is a schematic structural diagram of the present invention;

FIG. 3 is a schematic structural view of the present invention in the open state;

fig. 4 is a schematic cross-sectional structure of the present invention;

fig. 5 is a schematic structural diagram of a in fig. 4 according to the present invention.

The reference numerals and names in the figures are as follows:

the mold comprises a front mold core 10, a rear mold core 20, an ejection insert 30, a product profiling cavity 40, an ejector pin mechanism 50, a product profiling groove 11, a product profiling block 21, a limiting block 22, a square ejector rod 23, a major arc compensation block 31, an inclined ejector slide block 32, a T-shaped horizontal slide groove 33, a T-shaped horizontal slide block 34, a major arc compensation gap 41, a semicircular gap 42, an inclined plane slide groove 51, an accommodating groove 52, a fixing plate 53, a side ejector pin 54, a return spring 55, a spring groove 56 and a spring stop 57.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but 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. 2-5, in an embodiment of the present invention, a mold insert assembly for molding a product with a major arc includes a front mold insert 10 and a rear mold insert 20, the front mold insert 10 and the rear mold insert 20 are covered with each other, a semicircular product contour groove 11 is formed on a covering surface of the front mold insert 10, a product contour block 21 with a minor arc shape is formed on a covering surface of the rear mold insert 20, an ejection insert 30 butted to the product contour block 21 is further mounted on the rear mold insert 20, a major arc compensation block 31 connected to the product contour block 21 is formed at one end of the ejection insert 30, an upper portion of the major arc compensation block 31 is exposed from the rear mold insert 20, a lower portion of the major arc compensation block 31 is mounted inside the rear mold insert 20, a major arc compensation gap 41 is formed between a lower portion of the major arc compensation block 31 and the rear mold insert 20, a semicircular gap 42 is formed between the product contour groove 11, the product contour block 21 and an upper portion of the major arc compensation block 31, the major arc compensation gap 41 and the semicircular gap 42 together form a product profiling chamber 40 of a major arc-like structure.

In the above technical solution, by providing a mold core assembly, the front mold core 10 is mainly formed on the outer surface of the product, the rear mold core 20 is mainly formed on the inner surface of the product, a product profiling chamber 40 for forming a profile structure is formed by providing a major arc compensation gap 41 in the rear mold core 20 and communicating with a semicircular gap 42 formed between the front mold core 10 and the rear mold core 20, for the demolding operation after the product is formed, by configuring the inner surface of the formed product as a product profiling block 21 and a major arc compensation block 31 which are butted with each other, the upper portion of the major arc compensation block 31 and the product profiling block 21 together form a semicircular structure exposed outside the rear mold core 20, the lower portion of the major arc compensation block 31 is embedded in the rear mold core 20, and the major arc compensation gap 41 is formed between the major arc compensation block and the rear mold core 20 for compensating the portion of the product after being greater than 180 degrees, during the demolding process, directly through upwards ejecting mold insert 30, make the product inboard break away from with product contour block 21 earlier, treat that the part that the product is located major arc compensation clearance 41 is seen off the back by ejecting mold insert 30, take off the product along the lateral part again, through this design, can realize the injection moulding of major arc column structure product and in the same direction the drawing of patterns, can not lead to drawing of patterns in-process to cause the strain to the product, and can form the product that has fretwork column structure, can reduce the setting of line position mechanism or type core mechanism.

As shown in fig. 2-4, since the part corresponding to the front and rear positions of the semicircular gap 42 is demolded at 90 degrees from the product profiling cavity 40 during the product demolding process, and if the product is demolded at 90 degrees directly during the demolding process, the product is damaged, in design, the ejecting insert 30 is obliquely embedded on the rear mold core 20, an oblique-ejecting slide block 32 is arranged at the other end of the ejecting insert 30, a T-shaped horizontal slide groove 33 is arranged on the oblique-ejecting slide block 32, a T-shaped horizontal slide block 34 matched with the T-shaped horizontal slide groove 33 is arranged at the other end of the ejecting insert 30, and the ejecting insert 30 and the oblique-ejecting slide block 32 are in sliding fit through the T-shaped horizontal slide block 34 and the T-shaped horizontal slide groove 33.

As further shown in fig. 4-5, after the product is ejected by the ejection insert 30, the product will adhere to the major arc compensation block 31, if the product is removed by the manipulator, the precision of the fit between the manipulator and the mold needs to be considered, and the manipulator needs a large force to remove the product, therefore, by arranging the thimble mechanism 50 between the abutting surfaces of the major arc compensation block 31 and the product contour block 21, the thimble mechanism 50 includes a slope chute 51 arranged on the product contour block 21, an accommodating groove 52 arranged on the major arc compensation block 31, a fixing plate 53 mounted in the accommodating groove 52, a side thimble 54 movably connected to the fixing plate 53, and a return spring 55 arranged in the accommodating groove 52 and elastically connected to the side thimble 54, one end of the side thimble 54 penetrates through the major arc compensation block 31 and abuts against the major arc compensation gap 41, and the other end of the side thimble 54 penetrates through the fixing plate 53 and is in sliding fit with the slope chute 51.

In the mold opening process, the ejection insert 30 moves upwards to enable the ejection insert 30 and the product shape block 21 to generate sliding fit, and by utilizing the sliding fit relation, an inclined plane chute 51 is arranged on the product shape block 21, so that a side thimble 54 slides along the inclined plane chute 51 when the ejection insert 30 and the product shape block 21 slide, the side thimble 54 props against the product and extends outwards, the product is separated from a major arc compensation block 31, the product is convenient to take out, and when the product is taken out and the ejection insert 30 retreats, the side thimble 54 is driven to retreat under the action of a return spring 55, so that the side thimble 54 returns to the original position; specifically, a spring groove 56 for accommodating a return spring 55 is formed at the bottom of the major arc compensation block 31 corresponding to the accommodating groove 52, a spring stopper 57 located in the spring groove 56 is arranged on the side ejector pin 54, when the return spring 55 and the spring stopper 57 are elastically matched to eject the ejection insert 30, the inclined chute 51 exposes the major arc compensation block 31 through the inclined guide side ejector pin 54, the return spring 55 is pressed by the spring stopper 57 to be in a compressed state, when the ejection insert 30 retreats, the inclined chute 51 retreats to retract the side ejector pin 54, and the power for retracting the side ejector pin 54 is provided by the return spring 55 abutting against the spring stopper 57; further, one end of the side needle 54 abutting on the inclined slide groove 51 is formed into a spherical surface, and the side needle 54 is slidably engaged with the inclined slide groove 51 through the spherical surface, so that the degree of the sliding engagement between the side needle 54 and the inclined slide groove 51 can be increased.

As shown in fig. 2-3, in order to improve the degree of fit between the ejecting insert 30 and the product contour block 21 and to make the ejecting insert 30 more stable during the ejecting process, two stoppers 22 abutting against the major arc compensation block 31 are respectively formed at two ends of the product contour block 21, and the major arc compensation block 31 is limited between the two stoppers 22.

As shown in fig. 2-3, the two sides of the rear mold core 20 corresponding to the ejecting insert 30 are respectively provided with a square ejecting rod 23, and the square ejecting rod 23 is butted at the lower end of the major arc compensation gap 41, so that the product does not indent toward the major arc compensation gap 41 during the demolding process, thereby improving the demolding effect.

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 mould benevolence assembly of shaping major arc product, including front mould benevolence and back mould benevolence, its characterized in that, front mould benevolence and back mould benevolence are closed each other, be provided with half circular product profile groove on the face of closing of the lid of front mould benevolence, the shaping has the product profile block of bad arcuation on the face of closing of back mould benevolence, still inlay the ejecting mold insert that docks in product profile block on the back mould benevolence, the one end shaping of ejecting mold insert has the major arc compensation piece that links up in product profile block, the upper portion of major arc compensation piece exposes in back mould benevolence, the lower half of major arc compensation piece is inlayed inside the back mould benevolence, and be provided with the major arc compensation clearance between the lower half of major arc compensation piece and the back mould benevolence, be formed with the semicircle clearance between the first portion of product profile groove, product profile block and major arc compensation piece, major arc compensation clearance forms the product profile cavity chamber of major arc column structure jointly.

2. The die core assembly for molding a major arc product according to claim 1, wherein the ejecting insert is obliquely embedded on the rear die core, an oblique top slide block is arranged at the other end of the ejecting insert, a T-shaped horizontal chute is arranged on the oblique top slide block, a T-shaped horizontal slide block matched with the T-shaped horizontal chute is arranged at the other end of the ejecting insert, and the ejecting insert and the oblique top slide block are in sliding fit through the T-shaped horizontal slide block and the T-shaped horizontal chute.

3. The mold insert assembly of claim 1, wherein a pin mechanism is disposed between the abutting surfaces of the major arc compensation block and the product contour block, the pin mechanism includes an inclined chute disposed on the product contour block, an accommodating groove disposed on the major arc compensation block, a fixing plate mounted in the accommodating groove, a side pin movably connected to the fixing plate, and a return spring disposed in the accommodating groove and elastically connected to the side pin, one end of the side pin penetrates through the major arc compensation block and abuts against the major arc compensation gap, and the other end of the side pin penetrates through the fixing plate and is in sliding fit with the inclined chute.

4. The die insert assembly for molding a high-profile product according to claim 3, wherein a spring slot for accommodating a return spring is formed at the bottom of the high-profile compensation block corresponding to the accommodating slot, a spring stop block is disposed on the side thimble and located in the spring slot, and the return spring is elastically matched with the spring stop block.

5. The mold insert assembly of claim 3, wherein the end of the side pin abutting the inclined groove is a spherical surface, and the side pin is slidably engaged with the inclined groove through the spherical surface.

6. The mold insert assembly for molding a major arc product as claimed in claim 1, wherein two ends of the product mold insert are respectively molded with a stopper abutting against the major arc compensation block, and the major arc compensation block is limited between the two stoppers.

7. The mold core assembly for molding a product with a major arc according to claim 1, wherein the rear mold core is further provided with square ejector rods at two sides corresponding to the ejector inserts, and the square ejector rods are butted at the lower end of the major arc compensation gap.