CN213533587U

CN213533587U - Injection molding hole site anti-sticking upper die mold structure

Info

Publication number: CN213533587U
Application number: CN202022308331.5U
Authority: CN
Inventors: 钟永军
Original assignee: Kunshan Leiju Chuang Xinda Plastic Products Co ltd
Current assignee: Kunshan Leiju Chuang Xinda Plastic Products Co ltd
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2021-06-25
Anticipated expiration: 2030-10-16

Abstract

The utility model discloses an antiseized mould structure of going up of injection molding hole site, including last mould benevolence and the fashioned a plurality of die cavities of lower mould benevolence compound die, run through a plurality of taper pins that the lower mould benevolence extends to the die cavity bottom surface, locate the elastic plate of the elastic connection upper die core top elastic connection cope match-plate pattern, connect the elastic plate to run through a plurality of bracing pieces that the mould benevolence butt connects to lower mould benevolence surface, connect the elastic plate to run through the last mold insert that the mould benevolence extends to the die cavity in and locate the thimble that extends to the die cavity in the mould benevolence, the through-hole position of the bottom shaping injection molding of thimble, the thimble runs through-hole position butt taper. The utility model discloses an injection molding through-hole position quasi is confirmed ejecting, the not damaged problem.

Description

Injection molding hole site anti-sticking upper die mold structure

Technical Field

The utility model belongs to the technical field of the mould, especially, relate to an antiseized mould structure of going up of injection molding hole site.

Background

An injection molding part in the mold is connected with a plurality of cavities by hot runners for injection molding, the through hole position in the existing injection molding part is usually directly molded by an upper insert, the injection molding part is easy to adhere to an upper template after being demolded, and the material taking is difficult; the injection molding part is easy to glue at the position of the upper insert molding through hole, and has the problems of difficult ejection or ejection damage.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the technical problem, and provide the antiseized mould structure of going up of injection molding hole site to realize that the injection molding through-hole position quasi is ejecting certainly, the not damaged problem. In order to achieve the above purpose, the utility model discloses technical scheme as follows:

mould structure on antiseized mould structure in injection molding hole site, including last mould benevolence and lower mould benevolence compound die fashioned a plurality of die cavities, run through a plurality of taper pins that the lower mould benevolence extends to the die cavity bottom surface, locate the elastic plate of upper mould benevolence top elastic connection cope match-plate pattern, connect the elastic plate and run through a plurality of bracing pieces that the mould benevolence butt is to lower mould benevolence surface, connect the elastic plate and run through the last mold insert that the mould benevolence extends to the die cavity in and locate the thimble that extends to the die cavity in the mould benevolence, the through-hole position of the bottom shaping injection molding of thimble, the thimble runs through a through-hole position butt taper pin, go.

Specifically, in the lower bolster was located to the lower mould benevolence, still was equipped with lift removal's thimble board in the lower bolster, the bottom of taper pin is connected to the thimble board.

Specifically, the bottom of the lower template is provided with a lower backing plate, a lower push plate is arranged below the lower backing plate, and the lower push plate is provided with a plurality of push rods for pushing the ejector retainer plate.

Specifically, a plurality of first guide pillars penetrating through the lower backing plate and the lower template are arranged on the lower ejector plate, a lower fixing plate embedded into the lower template is attached to the bottom of the ejector plate, and a plurality of second guide pillars penetrating through the lower fixing plate and extending to the side edge of the lower die core are arranged on the ejector plate.

Specifically, an upper die base is arranged at the top of the upper die plate, the elastic plate is installed at the bottom of the upper die base through a spring, and a gap is reserved between the elastic plate and the upper die core.

Specifically, the injection molding includes the casing of back-off, locates the through-hole position of casing surface apex angle position, the corner all around of casing is the fillet.

Compared with the prior art, the utility model discloses the beneficial effect of antiseized mould structure of going up of injection molding hole site mainly embodies:

through setting up the taper pin and the thimble of mutually supporting, realize the accurate shaping of the logical hole site of injection molding, set up the last mold insert that has the ejecting effect of kick-backing at the side of through-hole position, guarantee the drawing of patterns stability of logical hole site, effectively avoid the strain.

Drawings

FIG. 1 is a schematic cross-sectional view of an embodiment of the present invention;

FIG. 2 is a schematic view of a lower mold core structure in the present embodiment;

FIG. 3 is a schematic view of the injection-molded article of the present embodiment;

FIG. 4 is a schematic cross-sectional view of the thimble and the taper pin in the present embodiment;

the figures in the drawings represent:

1 upper die core, 11 upper die plate, 12 elastic plate, 13 support rod, 14 upper die holder, 15 spring, 2 lower die core, 21 lower die plate, 22 ejector plate, 23 lower backing plate, 24 lower ejector plate, 25 push rod, 26 lower fixing plate, 3 taper pin, 4 upper insert, 5 ejector pins, 6 injection molding piece, 61 through hole position, 62 shell, 7 first guide pillar, 71 second guide pillar.

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, and not all embodiments.

Example (b):

referring to fig. 1-4, the present embodiment is an anti-sticking upper mold structure for injection molding hole sites, which includes a plurality of cavities formed by closing an upper mold core 1 and a lower mold core 2, a plurality of taper pins 3 extending through the lower mold core 2 to the bottom surface of the cavity, an elastic plate 12 disposed above the upper mold core 1 and elastically connected to an upper mold plate 11, a plurality of support rods 13 connected to the elastic plate 12 and extending through the upper mold core 1 to the surface of the lower mold core 2, an upper insert 4 connected to the elastic plate 12 and extending through the upper mold core 1 to the cavity, and a thimble 5 disposed in the upper mold core 1 and extending into the cavity, a through hole 61 of a bottom molding injection molding 6 of the thimble 5, the thimble 5 extends through the hole 61 and abuts against the taper pin 3, and the upper insert 4 is disposed at the side of the through hole 61 and forms.

The lower die core 2 is arranged in a lower template 21, an ejector plate 22 which can move up and down is also arranged in the lower template 21, and the bottom of the taper pin 3 is connected to the ejector plate 22.

The bottom of the lower template 21 is provided with a lower backing plate 23, a lower push plate 24 is arranged below the lower backing plate 23, and the lower push plate 24 is provided with a plurality of push rods 25 for pushing the ejector plate 22.

The lower push plate 24 is provided with a plurality of first guide posts 7 which penetrate through the lower backing plate 23 and the lower template 21. The bottom of the ejector plate 22 is attached with a lower fixing plate 26 embedded into the lower template 21, and the ejector plate 22 is provided with a plurality of second guide posts 71 which penetrate through the lower fixing plate 26 and extend to the side edge of the lower die core 2.

An upper die holder 14 is arranged at the top of the upper die plate 11, an elastic plate 12 is installed at the bottom of the upper die holder 14 through a spring 15, and a gap is reserved between the elastic plate 12 and the upper die core 1.

The lower die core 2 is provided with a glue injection runner, and the tail ends of all branches of the glue injection runner are connected with the die cavity. And molding the injection molding part 6 in the cavity, wherein the injection molding part 6 comprises an inverted shell 62 and a through hole position 61 arranged at the surface vertex angle of the shell 62. The corners of the housing 62 are rounded.

The top of the angle pin 3 corresponds to the through hole 61, and the surface of the housing 62 is clamped between the upper insert 4 and the angle pin 3.

When the mold is closed, the upper mold core 1 and the lower mold core 2 are closed, the angle pin 3 and the thimble 5 are butted to form a through hole 61 of the injection molded part 6, meanwhile, a shell 62 of the injection molded part 6 is formed between the upper insert 4 and the angle pin 3, and the elastic plate 12 is compressed and abutted against the upper mold base 14; when the mold is opened, the upper mold core 1 is separated from the lower mold core 2, the ejector pin 5 is separated from the hole 61, the elastic plate 12 rebounds to eject the upper mold core 4, the upper mold core 4 ejects the injection molding piece 6 to prevent the upper mold core 1 from being adhered, the injection molding piece 6 is left on the lower mold core 2, the lower ejector plate 24 drives the push rod 25 to eject the ejector pin plate 22, and the ejector pin plate 22 drives the angle pin 3 to eject the injection molding piece 6 for demolding.

Through setting up cotter 3 and thimble 5 of mutually supporting in this embodiment, realize the accurate shaping of the 6 logical hole sites 61 of injection molding, set up the last mold insert 4 that has the ejecting effect of resilience at the side of through-hole site 61, guarantee the drawing of patterns stability of logical hole site 61, effectively avoid the strain.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims

1. Mould structure on antiseized mould in injection molding hole site, its characterized in that: including last mould benevolence and lower mould benevolence compound die fashioned a plurality of die cavities, run through a plurality of taper pins that the lower mould benevolence extends to the die cavity bottom surface, locate the elastic plate of upper mould benevolence top elastic connection cope match-plate pattern, connect the elastic plate and run through a plurality of bracing pieces that the mould benevolence supports to lower mould benevolence surface, connect the elastic plate and run through the last mold insert that the mould benevolence extends to the die cavity in and locate the thimble that extends to the die cavity in the mould benevolence, the through-hole position of the bottom shaping injection molding of thimble, the thimble runs through a through-hole position butt taper pin, go up the mold insert be located.

2. The anti-sticking upper die structure for injection molding holes as claimed in claim 1, wherein: the lower die core is arranged in the lower template, an ejector plate which can move up and down is further arranged in the lower template, and the bottom of the taper pin is connected to the ejector plate.

3. The anti-sticking upper die structure of injection molding hole site of claim 2, characterized in that: the bottom of the lower template is provided with a lower backing plate, a lower push plate is arranged below the lower backing plate, and the lower push plate is provided with a plurality of push rods for pushing the ejector plate.

4. The anti-sticking upper die structure of injection molding hole site of claim 3, characterized in that: the lower push plate is provided with a plurality of first guide pillars penetrating through the lower backing plate and the lower template, the bottom of the ejector plate is attached with a lower fixing plate embedded into the lower template, and the ejector plate is provided with a plurality of second guide pillars penetrating through the lower fixing plate and extending to the side edge of the lower die core.

5. The anti-sticking upper die structure for injection molding holes as claimed in claim 1, wherein: the top of the upper die plate is provided with an upper die base, the elastic plate is arranged at the bottom of the upper die base through a spring, and a gap is reserved between the elastic plate and the upper die core.

6. The anti-sticking upper die structure for injection molding holes as claimed in claim 1, wherein: the injection molding piece comprises a reversed casing and a through hole position arranged at the top angle position of the surface of the casing, and the corners around the casing are fillets.