CN211194740U

CN211194740U - Quick demolding mould of dysmorphism piece

Info

Publication number: CN211194740U
Application number: CN201921711573.XU
Authority: CN
Inventors: 刘裕春
Original assignee: Suzhou Yayiyou Mould Technology Co ltd
Current assignee: Suzhou Yayiyou Mould Technology Co ltd
Priority date: 2019-10-14
Filing date: 2019-10-14
Publication date: 2020-08-07
Anticipated expiration: 2029-10-14

Abstract

The utility model provides a quick demoulding mould for special-shaped parts, wherein two first symmetrically arranged inserts are arranged in a mould core, and the first inserts are connected with a cylinder which is fixed outside a lower template; the mould is characterized in that the ejector pin is connected with a rotating mechanism, the rotating mechanism is connected with a second insert, the second insert is clamped on the mould core and is positioned at the lower part of the injection molding cavity, the mould is opened when the mould is opened through the specially-made first insert, meanwhile, the first insert is pulled out of the mould core respectively through the cylinders at two sides, the problem that an E-shaped injection molding part can be released, the ejector pin is upwards ejected out, the E-shaped injection molding part can be rapidly ejected out, the E-shaped structure cannot be clamped, in addition, the baffle plates are inserted at two sides of the injection molding cavity, on one hand, the tightness of the side edge of the mould cavity and the mould plate can be increased, and meanwhile, the vent holes are additionally formed, so that gas generated by high temperature in.

Description

Quick demolding mould of dysmorphism piece

Technical Field

The utility model relates to a mould field especially relates to quick demolding mould of dysmorphism piece.

Background

An injection mold is a tool for producing plastic products; and is also a tool for giving the plastic product complete structure and accurate dimension. 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.

In the existing injection mold, a product is usually ejected from a mold cavity in a mode of an ejector pin, when some special-shaped parts need to be processed, as shown in the structure shown in fig. 1, the two sides of the injection mold are provided with structures with E-shaped sections, the bottom of the injection mold is provided with a grid-shaped structure in a circular part, and the injection mold is of a rectangular structure, the ejector pin is difficult to eject during mold opening, and due to the E-shaped structures, gas in the mold cavity can be difficult to discharge, so that the injection molding quality is affected, and because an injection molding cavity is formed by matching a plurality of insert pieces and a mold plate, if the injection molding cavity is not matched, glue overflows at the edge.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a quick demolding die for a special-shaped piece, which comprises an upper fixing plate and a lower fixing plate, wherein the upper fixing plate is connected with an upper template, the lower fixing plate is connected with a mold foot and a top plate, the top plate is provided with a thimble, the mold foot is connected with a lower template, a mold core is arranged between the upper template and the lower template, an injection molding cavity is arranged in the mold core, two first mold inserts which are symmetrically arranged are arranged in the mold core, the first mold inserts are connected with a cylinder, and the cylinder is fixed outside the lower template; the ejector pin is connected with a rotating mechanism, the rotating mechanism is connected with a second insert, and the second insert is clamped on the mold core and is positioned at the lower part of the injection molding cavity.

Preferably, four baffles are arranged on the upper template, the baffles extend to the side wall of the injection molding cavity, a plurality of air outlet holes are formed in the surfaces, facing the injection molding cavity, of the baffles, and the air outlet holes extend along the baffles and are connected with an air suction device.

Preferably, the rotating mechanism comprises a rotating block fixed on the ejector pin, a rotating pin is arranged on the rotating block and connected to the lower template, and a second insert is connected to the rotating block.

Preferably, the thimble is provided with a protruding part, and a position of the protruding part corresponding to the lower template is provided with a limit groove.

Preferably, the second insert comprises a spherical crown block body, and a grid-shaped structure is arranged on the surface of the spherical crown block body.

The utility model provides a quick demolding mould of dysmorphism piece has following beneficial effect: this mould is through purpose-built first mold insert for go up the mould and open when the die sinking, simultaneously, pull out from mould benevolence respectively through the first mold insert of cylinder pulling of both sides, the injection molding of having solved E shape can release, upwards ejecting through the thimble, can the demolding fast, the structure of E shape can not block, in addition, insert the baffle in the chamber both sides of moulding plastics and can increase the compactness of die cavity side and template on the one hand, simultaneously, the venthole has been add, can be with the gas outgoing of the interior high temperature production of die cavity, the efficiency of moulding plastics is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.

FIG. 1 is a side sectional view of the mold of the present invention;

FIG. 2 is a top view of the lower plate and the mold insert of the present invention;

wherein, 1, an upper fixing plate; 2. a lower fixing plate; 3. mounting a template; 4. a lower template; 5. a mould leg; 6. a top plate; 7. a thimble; 8. a mold core; 9. an injection molding cavity; 10. a first insert; 11. a cylinder; 12. a baffle plate; 13. an air outlet; 14. an air suction device; 15. rotating the block; 16. rotating the pin; 17. a second insert; 18. a protrusion; 19. a limiting groove.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 1 to 2, the utility model provides a quick demolding mold for a special-shaped piece, which comprises an upper fixing plate 1 and a lower fixing plate 2, wherein the upper fixing plate 1 is connected with an upper template 3, the lower fixing plate 2 is connected with a mold foot 5 and a top plate 6, the top plate 6 is provided with a thimble 7, the mold foot 5 is connected with a lower template 4, a mold core 8 is arranged between the upper template 3 and the lower template 4, an injection molding cavity 9 is arranged in the mold core 8, the injection molding cavity 9 of the upper mold core 8 and the injection molding cavity 9 of the lower mold core 8 form an upper part and a lower part of an E, the middle part of the E is formed by two symmetrically arranged first mold inserts 10 arranged in the mold core 8, the side edge of the first mold insert 10 is provided with a groove part, the injection molding cavity 9 of the E is formed by matching with the upper template 3, the first mold insert 10 is connected with a cylinder 11, the air cylinders 11 are fixed outside the lower template 4, and the air cylinders 11 on the two sides stretch out and draw out of the injection molding product when the first insert 10 is driven to be matched or the mold is removed, so that the injection molding part is prevented from being clamped.

And it is to be noted that: if the cooperation is not good between 9 lateral walls of injection molding chamber of E shape part and the template, have the clout to be extruded and run out when moulding plastics for final product has unnecessary plain edge, in order to solve this problem, sets up baffle 12 at 9 lateral walls of injection molding chamber of E shape part, be equipped with four baffles 12 on the cope match-plate pattern 3, baffle 12 stretch in 9 lateral walls of injection molding chamber, baffle 12 towards be equipped with a plurality of ventholes 13 on the face of injection molding chamber 9, venthole 13 extends along baffle 12 and is connected with induced draft device 14, inserts when by last mould compound die, and vertical baffle 12 can be closed with injection molding chamber 9 side, and simultaneously, venthole 13 on the baffle 12 can be with the injection molding in the chamber 9 a large amount of gas discharge that produces.

When the mold is opened, firstly, the upper mold is opened, the baffle plate 12 is pulled out, the air cylinders 11 on the two sides are contracted, the first insert is pulled out from the injection molding piece and then is jacked up through the thimble 7 on the lower part, the thimble 7 is connected with a rotating mechanism, the rotating mechanism is connected with a second insert 17, the second insert 17 is clamped on the mold core 8 and is positioned on the lower part of the injection molding cavity 9, the rotating mechanism comprises a rotating block 15 fixed on the thimble 7, the rotating block 15 is provided with a rotating pin 16, the rotating pin 16 is connected on the lower template 4, the rotating block 15 is connected with a second insert 17, the second insert 17 is in a spherical crown structure, in order to obtain a net-shaped structure on the lower part of the injection molding piece, the spherical crown surface is arranged in a grid shape, the thimble 7 is spaced from one end of the injection molding cavity 9, when the upper mold is upward, the rotating block 15 is driven to rotate along the rotating pin 16, so that, the injection molding piece is separated from the injection molding piece, adhesion is effectively prevented when the net-shaped structure at the lower part of the injection molding piece is ejected, after the injection molding piece is pulled out, the ejector pins 7 continue to eject out the whole injection molding piece, the integrity of the detail part of the injection molding piece in the whole process is high, and the defective percentage is low.

The thimble 7 is provided with a protrusion 18, the protrusion 18 is provided with a limit groove 19 at a position corresponding to the lower template 4, the protrusion 18 is used for fixing the rotating block 15, and the limit groove 19 can limit the ejection stroke of the thimble 7 to prevent excessive ejection.

Various modifications to the embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A quick die-stripping die for a special-shaped part comprises an upper fixing plate and a lower fixing plate, wherein an upper die plate is connected onto the upper fixing plate, a die pin and a top plate are connected onto the lower fixing plate, an ejector pin is arranged on the top plate, a lower die plate is connected onto the die pin, and a die core is arranged between the upper die plate and the lower die plate;

the ejector pin is connected with a rotating mechanism, the rotating mechanism is connected with a second insert, and the second insert is clamped on the mold core and is positioned at the lower part of the injection molding cavity.

2. A profile rapid stripping mold according to claim 1, wherein the upper mold plate is provided with four baffle plates, the baffle plates extend out of the side wall of the injection molding cavity, and the surface of the baffle plates facing the injection molding cavity is provided with a plurality of air outlet holes, and the air outlet holes extend along the baffle plates and are connected with an air suction device.

3. The quick stripping die for the special-shaped part according to claim 1, wherein the rotating mechanism comprises a rotating block fixed on the ejector pin, a rotating pin is arranged on the rotating block and connected to the lower template, and the rotating block is connected with the second insert.

4. The quick special-shaped piece demolding die according to claim 1, wherein the ejector pin is provided with a protruding portion, and a limiting groove is formed in a position, corresponding to the lower template, of the protruding portion.

5. The quick stripping die for the special-shaped part according to claim 1 or 3, characterized in that the second insert comprises a spherical crown-shaped block body, and the surface of the spherical crown-shaped block body is provided with a grid-shaped structure.