CN215750529U

CN215750529U - Exhaust structure for plastic mould

Info

Publication number: CN215750529U
Application number: CN202121759918.6U
Authority: CN
Inventors: 何宁宁
Original assignee: Heyuan Xipin Precision Mould Co ltd
Current assignee: Guangdong Xiqin Precision Mold Co ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2022-02-08
Anticipated expiration: 2031-07-30

Abstract

The utility model relates to the technical field of plastic molds, in particular to an exhaust structure for a plastic mold, which comprises a first mold, wherein a second mold is arranged on the bottom surface of the first mold, an open slot is formed in the top surface of the first mold, an exhaust seat which is in contact with a mold cavity of the second mold is arranged in the open slot, a connecting slot is formed in the bottom of the side surface of the exhaust seat, a plurality of exhaust fins are arranged on the inner side surface of the connecting slot, a first exhaust groove is formed in the bottom of the side surface of each exhaust fin, and a second exhaust groove is formed in the top surface of the first exhaust groove. According to the utility model, the first exhaust groove is formed in the bottom of the side face of the exhaust fin, so that when gas trapping is locally small due to the limitation of a product structure in the plastic molding process, the gas trapping with small area in the mold cavity can be exhausted by utilizing the first exhaust groove and the second exhaust groove, the exhaust effect is better, the design of the exhaust fin is smaller, the deformation is prevented, and the first exhaust groove and the second exhaust groove are closer to the glue site, so that the exhaust is facilitated and the use is convenient.

Description

Exhaust structure for plastic mould

Technical Field

The utility model relates to the technical field of plastic molds, in particular to an exhaust structure for a plastic mold.

Background

In industrial production, parts and products of desired shapes can be manufactured from metallic or non-metallic materials by means of various presses and special tools, which are called molds, wherein the mold dedicated to the production of plastic is called plastic mold, and the plastic mold is composed of several sets of parts, and the inclined combination has a molding cavity, and when injection molding is carried out, molten plastic is injected into the molding cavity and cooled and shaped in the cavity to form the plastic product.

When the existing mold is used, in the molding process, a small area is easy to generate in the local part of the mold cavity to trap air, and the periphery of the mold cavity is provided with the pitched roof mechanism, so that the design of the traditional exhaust mold insert is limited, and the appearance of the product is affected by bubbles, so that the appearance of the product is poor.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical problems, the utility model aims to provide an exhaust structure for a plastic mold, wherein a first exhaust groove is formed in the bottom of the side surface of an exhaust sheet, so that when a small area is locally trapped due to the limitation of a product structure in the plastic molding process, the small area trapped air in a mold cavity can be exhausted by using the first exhaust groove and a second exhaust groove, the exhaust effect is good, the design of the exhaust sheet is small, the deformation is prevented, and the first exhaust groove and the second exhaust groove are close to a glue site, so that the exhaust is facilitated and the use is convenient.

The purpose of the utility model can be realized by the following technical scheme:

an exhaust structure for a plastic mold comprises a first mold, a second mold is arranged on the bottom surface of the first mold, an open slot is formed in the top surface of the first mold, an exhaust seat which is in contact with a mold cavity of the second mold is arranged in the open slot, a connecting slot is formed in the bottom of the side surface of the exhaust seat, a plurality of exhaust fins are arranged on the inner side surface of the connecting slot, a first exhaust slot is formed in the bottom of the side surface of the exhaust fin, a second exhaust slot is formed in the inner top surface of the first exhaust slot, when a local small area is trapped in the plastic molding process due to the limitation of a product structure, the small area trapped air in the mold cavity can be exhausted by utilizing the first exhaust slot and the second exhaust slot, the exhaust fins are designed to be small in size and are prevented from deforming, the first exhaust slot and the second exhaust slot are close to the glue position, the exhaust is favorable for exhaust and convenient to use, two pins which are in sliding connection with the exhaust fins, are spliced on the exhaust seat through the pins, the exhaust sheet and the exhaust seat are assembled simply, the exhaust sheet and the exhaust seat are convenient to process, and the exhaust sheet and the exhaust seat are convenient to use.

Further, the method comprises the following steps: a top surface of the die is fixedly connected with a positioning ring.

Further, the method comprises the following steps: the top surface of the first mold corresponds to the exhaust seat and is provided with a first fixing groove, three openings are formed in the top of the side surface of the exhaust seat and correspond to the first fixing groove, three openings are formed in the top surface of the exhaust seat and correspond to the second fixing groove, the first fixing groove, the second fixing groove and the third fixing groove can be inserted through bolts and the like, the exhaust seat is fixed on the first mold, and the first mold is simple to fix and convenient to use.

Further, the method comprises the following steps: the length of the first fixing groove is 26-28mm, and the length of the second fixing groove is 8-9 mm.

Further, the method comprises the following steps: the exhaust seat arc bottom surface is located one side of exhaust piece and has seted up constant head tank one, is located the exhaust piece arc bottom surface adjacent with constant head tank one and has seted up constant head tank two corresponding to constant head tank one, two medial surfaces fixedly connected with locating pieces of mould, constant head tank one and constant head tank two medial surfaces all with locating piece sliding connection, the locating piece can be through the position of constant head tank one with the restriction exhaust seat of constant head tank two, convenient to use.

Further, the method comprises the following steps: the thickness of the first exhaust groove is smaller than 0.05mm, the thickness of the second exhaust groove is 0.1mm, the width of the second exhaust groove is the same as that of the bottom of the exhaust sheet, and the thicknesses of the first exhaust groove and the second exhaust groove are smaller, so that molten plastic cannot flow out of the die cavity through the first exhaust groove and the second exhaust groove, and the use is convenient.

Further, the method comprises the following steps: the width of the exhaust sheet is 0.8-1mm, and the exhaust sheet is small in width and convenient to assemble and produce.

Further, the method comprises the following steps: the length of pin equals the width of exhaust seat, avoids the longer installation that influences the exhaust seat of pin length.

The utility model has the beneficial effects that:

1. the method is characterized in that an exhaust seat which is in contact with a mold cavity of a mold II is arranged in an open groove, a connecting groove is formed in the bottom of the side face of the exhaust seat, a plurality of exhaust fins are arranged on the inner side face of the connecting groove, an exhaust groove I is formed in the bottom of the side face of the exhaust fin, an exhaust groove II is formed in the top face of the exhaust groove I, and an exhaust groove I is formed in the bottom of the side face of the exhaust fin;

2. two pins which are connected with the exhaust sheet in a sliding way are connected to the side face of the exhaust seat in a sliding way, and the exhaust sheet can be spliced on the exhaust seat through the pins, so that the exhaust sheet and the exhaust seat are assembled simply, the exhaust sheet and the exhaust seat are convenient to process, and the exhaust sheet and the exhaust seat are convenient to use.

Drawings

The utility model will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic view of an overall structure of an exhaust structure for a plastic mold according to the present invention;

FIG. 2 is a schematic structural view of a second mold in the present invention;

FIG. 3 is an enlarged view at A of FIG. 2;

FIG. 4 is a schematic view of the exhaust seat of the present invention;

FIG. 5 is a schematic view of an alternative perspective structure of the exhaust seat of the present invention;

fig. 6 is a schematic view of the structure of the vent sheet in the present invention.

In the figure: 1. a first mould; 11. positioning rings; 2. a second die; 3. an exhaust seat; 31. a pin; 32. connecting grooves; 33. a first fixing groove; 34. a second fixing groove; 35. positioning a first groove; 4. an exhaust sheet; 41. positioning a second groove; 42. a first exhaust groove; 43. and a second exhaust groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, an exhaust structure for a plastic mold comprises a mold 1, a mold 2 is disposed on the bottom surface of the mold 1, an open slot is disposed on the top surface of the mold 1, an exhaust seat 3 contacting with the mold cavity of the mold 2 is disposed inside the open slot, a connecting slot 32 is disposed at the bottom of the side surface of the exhaust seat 3, a plurality of exhaust fins 4 are disposed on the inner side surface of the connecting slot 32, a first exhaust slot 42 is disposed at the bottom of the side surface of the exhaust fin 4, a second exhaust slot 43 is disposed on the top surface of the first exhaust slot 42, when a local small area is trapped due to the limitation of the product structure during the plastic molding process, the small area gas in the mold cavity can be exhausted by using the first exhaust slot 42 and the second exhaust slot 43, the exhaust fin 4 is designed to be small to prevent deformation, the first exhaust slot 42 and the second exhaust slot 43 are both closer to the glue position, which is favorable for exhausting gas and convenient to use, two pins 31 slidably connected with the exhaust fin 4 are slidably connected to the side surface of the exhaust seat 3, exhaust piece 4 can be inlayed and pieced together on exhaust seat 3 through pin 31, and it is comparatively simple to assemble exhaust piece 4 and exhaust seat 3 like this, and makes things convenient for the processing of exhaust piece 4 and exhaust seat 3, convenient to use.

The top surface of the first die 1 is fixedly connected with a positioning ring 11. The top surface of the first die 1 is provided with a third fixing groove corresponding to the exhaust seat 3, the top of the side surface of the exhaust seat 3 is provided with a first fixing groove 33 corresponding to the third fixing groove, the top surface of the exhaust seat 3 is provided with a second fixing groove 34 corresponding to the third fixing groove, the first fixing groove 33, the second fixing groove 34 and the third fixing groove can be inserted through bolts and the like to fix the exhaust seat 3 on the first die 1, and the first fixing groove 3, the second fixing groove 34 and the third fixing groove are simple and convenient to use. The length of the first fixing groove 33 is 26-28mm, and the length of the second fixing groove 34 is 8-9 mm.

The first positioning groove 35 is formed in one side, located at the exhaust sheet 4, of the arc-shaped bottom surface of the exhaust seat 3, the second positioning groove 41 is formed in the position, located at the position, adjacent to the first positioning groove 35, of the arc-shaped bottom surface of the exhaust sheet 4, the inner side surface of the mold 2 is fixedly connected with a positioning block, the inner side surfaces of the first positioning groove 35 and the second positioning groove 41 are both in sliding connection with the positioning block, and the positioning block can limit the position of the exhaust seat 3 through the first positioning groove 35 and the second positioning groove 41 and is convenient to use. The thickness of the first exhaust groove 42 is less than 0.05mm, the thickness of the second exhaust groove 43 is 0.1mm, the width of the second exhaust groove 43 is the same as that of the bottom of the exhaust sheet 4, and the thicknesses of the first exhaust groove 42 and the second exhaust groove 43 are smaller, so that the molten plastic cannot flow out of the mold cavity through the first exhaust groove 42 and the second exhaust groove 43, and the use is convenient. The width of the exhaust sheet 4 is 0.8-1mm, and the width of the exhaust sheet 4 is small, so that the assembly and the production are convenient. The length of the pin 31 is equal to the width of the exhaust seat 3, so that the long length of the pin 31 is prevented from influencing the installation of the exhaust seat 3.

The working principle is as follows: during the use, can insert a plurality of exhaust fins 4 in spread groove 32, then inlay through pin 31 with exhaust fin 4 and piece together on exhaust seat 3, it is comparatively simple to assemble exhaust fin 4 and exhaust seat 3, and make things convenient for the processing of exhaust fin 4 and exhaust seat 3, then insert exhaust seat 3 in the open slot, inject fixed slot one 33 through bolt etc., fix exhaust seat 3 on mould one 1 in fixed slot two 34 and the fixed slot three, because of product structure restriction in the plastic forming process, when local small area is stranded, can utilize exhaust groove one 42 and exhaust groove two 43 to discharge the little area stranded gas in the mould intracavity, exhaust fin 4 designs lessly, prevent to warp, exhaust groove one 42 and exhaust groove two 43 all are close with the glue position distance, be favorable to the exhaust, convenient to use.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the utility model to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the utility model as defined in the following claims.

Claims

1. The utility model provides an exhaust structure for plastic mould, its characterized in that, includes mould (1), mould (1) bottom surface is provided with mould two (2), the open slot has been seted up to mould (1) top surface, inside exhaust seat (3) that are provided with the die cavity contact with mould two (2) of open slot, spread groove (32) have been seted up to exhaust seat (3) side bottom, spread groove (32) medial surface is provided with a plurality of exhaust piece (4), exhaust groove (42) have been seted up to exhaust piece (4) side bottom, exhaust groove two (43) have been seted up to the top surface in exhaust groove (42), exhaust seat (3) side sliding connection have with two pins (31) of exhaust piece (4) sliding connection.

2. The venting structure for plastic molds according to claim 1, wherein a positioning ring (11) is fixedly connected to the top surface of the first mold (1).

3. The venting structure for plastic molds according to claim 1, wherein a third fixing groove is formed on the top surface of the first mold (1) corresponding to the venting seat (3), a third fixing groove (33) is formed on the top surface of the side surface of the venting seat (3) corresponding to the third fixing groove, and a second fixing groove (34) is formed on the top surface of the venting seat (3) corresponding to the third fixing groove.

4. The venting structure for plastic molds according to claim 3, wherein the length of the first fixing groove (33) is 26-28mm, and the length of the second fixing groove (34) is 8-9 mm.

5. The exhaust structure for the plastic mold according to claim 1, wherein the first positioning groove (35) is formed in the arc-shaped bottom surface of the exhaust seat (3) on one side of the exhaust sheet (4), the second positioning groove (41) is formed in the arc-shaped bottom surface of the exhaust sheet (4) adjacent to the first positioning groove (35) and corresponds to the first positioning groove (35), the positioning block is fixedly connected to the inner side surface of the second mold (2), and the inner side surfaces of the first positioning groove (35) and the second positioning groove (41) are both connected with the positioning block in a sliding manner.

6. The venting structure for plastic molds according to claim 1, wherein the thickness of the first venting groove (42) is less than 0.05mm, the thickness of the second venting groove (43) is 0.1mm, and the width of the second venting groove (43) is the same as the width of the bottom of the venting sheet (4).

7. The venting structure for plastic molds according to claim 1, wherein the width of the venting sheet (4) is 0.8-1 mm.

8. The venting structure for plastic molds according to claim 1, wherein the length of the pin (31) is equal to the width of the venting seat (3).