CN116423764A

CN116423764A - Mould easy to demould

Info

Publication number: CN116423764A
Application number: CN202310367003.8A
Authority: CN
Inventors: 巫森彬; 何云霞; 吴俊华; 梁茂; 李晓
Original assignee: Kunshan Shenkai Mould Co ltd
Current assignee: Kunshan Shenkai Mould Co ltd
Priority date: 2023-04-07
Filing date: 2023-04-07
Publication date: 2023-07-14

Abstract

The invention discloses a die easy to demould, which comprises an upper die and a lower die, wherein the upper die is provided with an upper die core, the lower die is provided with a lower die core matched with the upper die core, the inside of the lower die is provided with a movable ejector plate, one side of the ejector plate is connected with an ejector pin which can extend out of the lower die core, the other side of the ejector plate is connected with an inclined ejector assembly which can extend out of the lower die core, a buffer assembly is matched between the inclined ejector assembly and the lower die, the ejector plate is connected with an air blowing assembly which can extend out of the lower die core between the inclined ejector assembly and the ejector pin, the air blowing assembly is externally connected with a first hydraulic cylinder, and the ejector plate is externally connected with a second hydraulic cylinder.

Description

Mould easy to demould

Technical Field

The invention relates to the technical field of injection molds, in particular to a mold easy to demold.

Background

The injection mold is a tool for producing plastic products; is also a tool for endowing the plastic product with complete structure and precise size; injection molding is a processing method used in mass production of parts with complex shapes; specifically, the heated and melted plastic is injected into a die cavity under high pressure by an injection molding machine, and a formed product is obtained after cooling and solidification.

The existing injection mold adopts an ejection structure, a thimble or an inclined ejection block is generally adopted to directly eject a product from a mold core, and then in the actual production process, the following problems often occur: (1) After the upper die and the lower die are separated, the workpiece is adhered to the die core due to poor cooling effect, and the die is not easy to be demolded;

(2) The ejector pin or the inclined ejector block is adopted to directly eject the product out of the die core, so that the product is damaged due to overlarge stress.

In order to solve the problems, the invention discloses a mold which is easy to release.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention discloses a die easy to demould.

In order to achieve the above purpose, the present invention is realized by the following technical scheme: the utility model provides a mould of easily drawing of patterns, includes mould and lower mould, be provided with the mould benevolence on the last mould, be provided with on the lower mould with last mould benevolence matched with lower mould benevolence, the inside movable thimble board that is provided with of lower mould, one side of thimble board is connected with the thimble that can stretch out from the lower mould benevolence, the opposite side of thimble board is connected with the oblique top subassembly that can stretch out from the lower mould benevolence, the cooperation is provided with buffer unit between oblique top subassembly and the lower mould, the thimble board is provided with the subassembly of blowing that can stretch out from the lower mould benevolence between oblique top subassembly and thimble, the external first pneumatic cylinder that has of subassembly of blowing, the outside second pneumatic cylinder that has of thimble board.

Further, the upper die assembly comprises an upper die fixing plate and an upper die plate arranged on the upper die fixing plate, and the upper die core is arranged on the upper die plate.

Further, the lower die assembly comprises a lower die fixing plate and a lower die plate, die legs are respectively arranged on two sides of the lower die plate and connected with the lower die fixing plate, a lower die core is arranged on the lower die plate, and the thimble plate is movably arranged between the two die legs.

Further, the oblique top assembly comprises an oblique top block and an oblique column, the oblique top block is connected with the thimble plate through the oblique column, a guide hole for the oblique column to move is formed in the lower die plate, and a guide groove for the oblique top block to move is formed in the lower die core.

Further, the buffer assembly comprises a buffer spring and a limiting ring, wherein the limiting ring is fixed with the inclined column below the lower die plate, and the buffer spring is sleeved on the inclined column between the lower die plate and the limiting ring.

Further, the air blowing assembly comprises a T-shaped hollow pipe, T-shaped holes are formed in the lower die core and the lower die plate, the T-shaped hollow pipe is movably installed in the T-shaped holes, the bottom of the T-shaped hollow pipe is connected with the thimble plate, and a plurality of air blowing holes are formed in the circumference of the top of the T-shaped hollow pipe in an annular array.

Further, the T-shaped hollow tube is externally connected with a high-pressure pump for supplying cold air.

Further, the lower die core and the lower die plate are internally provided with linear holes for enabling the ejector pins to pass through.

The invention has the following beneficial effects:

according to the invention, the air blowing assembly can be used for blowing and cooling a molded product, and when the ejector pin plate drives the ejector pin and the inclined ejection assembly to lift, the product can be rapidly demoulded, and in addition, the buffer assembly is arranged between the inclined ejection assembly and the lower die, so that damage to the product caused by overlarge stress can be avoided.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

FIG. 1 is a schematic diagram of the overall structure of the present disclosure;

fig. 2 is a schematic structural view of an air blowing assembly according to the present disclosure.

Detailed Description

The following description of the embodiments of the present invention 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 invention, but not all embodiments.

Examples

Referring to fig. 1 and 2, a mold easy to be demolded includes an upper mold 10 and a lower mold 20, an upper mold core 13 is provided on the upper mold, a lower mold core 24 matched with the upper mold core is provided on the lower mold, a movable ejector plate 30 is provided inside the lower mold, one side of the ejector plate is connected with an ejector pin 40 which can extend from the lower mold core, the other side of the ejector plate is connected with an inclined ejector assembly 60 which can extend from the lower mold core, a buffer assembly 70 is matched between the inclined ejector assembly and the lower mold, the ejector plate is connected with an air blowing assembly 50 which can extend from the lower mold core between the inclined ejector assembly and the ejector pin, the air blowing assembly is externally connected with a first hydraulic cylinder (not shown), the ejector plate is externally connected with a second hydraulic cylinder (not shown), the molded product can be cooled through the air blowing assembly, the ejector plate is driven by the ejector pin and the inclined ejector assembly to demold when the inclined ejector assembly is lifted, and the buffer assembly can buffer the product when the inclined ejector assembly is lifted, and the product can not be damaged due to overlarge stress.

And in the die opening state, the first hydraulic cylinder drives the blowing assembly to lift, the blowing assembly blows air to cool the product, and then the second hydraulic cylinder drives the jacking plate to lift so as to demould the product.

Wherein, the upper die assembly includes upper die fixed plate 11 and upper die plate 12 that sets up on the upper die fixed plate, and the upper die benevolence sets up on the upper die plate.

The lower die assembly comprises a lower die fixing plate 21 and a lower die plate 23, die legs 22 are respectively arranged on two sides of the lower die plate and connected with the lower die fixing plate, a lower die core is arranged on the lower die plate, and a thimble plate is movably arranged between the two die legs.

It will be appreciated that the oblique jacking assembly comprises an oblique jacking block 62 and an oblique column 61, the oblique jacking block is connected with the thimble board through the oblique column, a guide hole 28 for the oblique jacking block to move is arranged in the lower die plate, a guide groove 27 for the oblique jacking block to move is arranged in the lower die core, when the thimble board drives the oblique jacking assembly to move, the oblique column and the oblique jacking block move upwards together, and when the oblique jacking block stretches out of the lower die core, the oblique jacking block can be matched with the thimble to jack up a product, so that the product is demolded, and in addition, the top of the oblique jacking block is flush with the top of the guide groove in a die clamping state.

In order to enable the inclined ejection assembly to achieve the buffering function, the buffering assembly comprises a buffering spring 72 and a limiting ring 71, the limiting ring is fixed with the inclined column below the lower die plate, the buffering spring is sleeved on the inclined column corresponding to the limiting ring, when the ejector pin plate drives the inclined ejection assembly to lift, the buffering spring is matched with the lower die plate to enable the inclined column to perform buffering movement, and when a product is lifted and demoulded, the product cannot be damaged due to the problem of overlarge stress.

As one of the preferred embodiments, the blowing assembly comprises a T-shaped hollow pipe, a T-shaped hole 26 is commonly arranged in the lower die core and the lower die plate, the T-shaped hollow pipe is movably arranged in the T-shaped hole, the bottom of the T-shaped hollow pipe is connected with a thimble plate, a plurality of blowing holes are circumferentially arranged at the top of the T-shaped hollow pipe in an annular array, the top of the T-shaped hollow pipe is flush with the top of the T-shaped hole in a die closing state, the T-shaped hollow pipe is lifted from the T-shaped hole in a die opening state, at the moment, the plurality of blowing holes on the T-shaped hollow pipe leak out, at the moment, the T-shaped hollow pipe is ventilated, gas is discharged from the blowing holes, and therefore cooling of a product can be realized quickly.

In accordance with the above, the lower core and the lower die plate are internally provided with the linear holes 25 for the ejector pins to pass through, and in the die closing state, the top parts of the ejector pins are flush with the top parts of the linear holes.

The foregoing embodiments are merely illustrative of the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the present invention and to implement the same according to the present invention, not to limit the scope of the present invention. All changes and modifications that come within the meaning and range of equivalency of the invention are to be embraced within their scope.

Claims

1. The utility model provides a mould of easily drawing of patterns, its characterized in that includes mould and lower mould, be provided with the mould benevolence on the last mould, be provided with on the lower mould with last mould benevolence matched with lower mould benevolence, the inside movable thimble board that is provided with of lower mould, one side of thimble board is connected with the thimble that can stretch out from the lower mould benevolence, the opposite side of thimble board is connected with the oblique top subassembly that can stretch out from the lower mould benevolence, the cooperation is provided with buffer unit between oblique top subassembly and the lower mould, the thimble board is provided with the subassembly of blowing that can stretch out from the lower mould benevolence between oblique top subassembly and thimble, the external first pneumatic cylinder that has of subassembly of blowing, the outside second pneumatic cylinder that has of thimble board.

2. The easy-to-release mold according to claim 1, wherein the upper mold assembly comprises an upper mold fixing plate and an upper mold plate provided on the upper mold fixing plate, and the upper mold core is provided on the upper mold plate.

3. The mold easy to demold according to claim 1, wherein the lower mold assembly comprises a lower mold fixing plate and a lower mold plate, mold legs are respectively arranged on two sides of the lower mold plate and connected with the lower mold fixing plate, the lower mold core is arranged on the lower mold plate, and the ejector pin plate is movably arranged between the two mold legs.

4. The mold easy to demold according to claim 3, wherein the oblique top assembly comprises an oblique top block and an oblique column, the oblique top block is connected with the thimble plate through the oblique column, a guide hole for the oblique column to move is formed in the lower mold plate, and a guide groove for the oblique top block to move is formed in the lower mold core.

5. The easy-to-demold mold according to claim 4, wherein the buffer assembly comprises a buffer spring and a limiting ring, the limiting ring is fixed with the inclined column below the lower die plate, and the buffer spring is sleeved on the corresponding inclined column between the lower die plate and the limiting ring.

6. The mold easy to demold according to claim 3, wherein the air blowing assembly comprises a T-shaped hollow tube, T-shaped holes are formed in the lower mold core and the lower mold plate, the T-shaped hollow tube is movably installed in the T-shaped holes, the bottom of the T-shaped hollow tube is connected with the thimble plate, and a plurality of air blowing holes are formed in the circumference of the top of the T-shaped hollow tube in an annular array.

7. The easy-to-demold mold according to claim 6, wherein the T-shaped hollow tube is externally connected with a high pressure pump for supplying cool air.

8. The easy-to-release mold according to claim 1, wherein the lower core and the lower die plate are internally provided with linear holes for the ejector pins to pass through.