CN217752571U

CN217752571U - Vacuum extraction system of injection mold

Info

Publication number: CN217752571U
Application number: CN202221899362.5U
Authority: CN
Inventors: 陈良进; 方宏机
Original assignee: Guangdong Qixin Auto Parts Co ltd
Current assignee: Guangdong Qixin Auto Parts Co ltd
Priority date: 2022-07-22
Filing date: 2022-07-22
Publication date: 2022-11-08
Anticipated expiration: 2032-07-22

Abstract

The utility model provides an injection mold's vacuum extraction system, includes a vacuum extraction equipment and a plurality of injection mold, the vacuum extraction equipment is a plurality of through pipe connection injection mold's gas outlet intercommunication. The utility model discloses in, pass through pipe connection with all injection mold on same vacuum extraction equipment to reduce the purchase and the installation of vacuum extraction equipment, save the space that equipment put and reduce purchasing cost. When worth mentioning the utility model discloses in cavity extraction equipment is powerful 2BE liquid ring vacuum pump, can satisfy a plurality of injection mold's the evacuation demand of moulding plastics.

Description

Vacuum extraction system of injection mold

Technical Field

The utility model relates to a mould injection technical field, especially an injection mold's vacuum extraction system.

Background

In order to improve the internal quality of a die-casting product and improve the problem of air holes of the product, vacuum extraction equipment is generally adopted to perform positive air extraction treatment on a die during injection molding, so that the content of air in the die is reduced, the air holes and dissolved gas in a die-casting piece are eliminated or obviously reduced, and the purpose of improving the internal quality of the die-casting product is achieved.

The vacuum mode that the tradition adopted is that every die casting machine is furnished with a vacuum machine alone, during injection moulding production, links to each other the exhaust port of vacuum machine and mould. After the die is closed, the vacuum machine works to generate negative pressure, so that air in the cavity of the die is pumped out; this approach has the following drawbacks: 1) Each die casting machine is provided with a vacuum machine, so that the cost is high; 2) A plurality of vacuum machines are adopted, so that the maintenance is inconvenient; 3) A plurality of vacuum machines are adopted, so that the occupied factory space is large; 4) And a plurality of vacuum machines are adopted, so that the monitoring is difficult.

SUMMERY OF THE UTILITY MODEL

To the above defect, the utility model aims to provide an injection mold's vacuum extraction system reduces purchase and installation of vacuum extraction equipment, saves the space that equipment was put and reduces purchasing cost.

To achieve the purpose, the utility model adopts the following technical proposal: the utility model provides an injection mold's vacuum extraction system, includes a vacuum extraction equipment and a plurality of injection mold, the vacuum extraction equipment is a plurality of through pipe connection injection mold's gas outlet intercommunication.

Preferably, the injection mold comprises an upper mold and a lower mold, the upper mold is provided with a first model concave part, the lower mold is provided with a second model concave part, after the upper mold and the lower mold are combined, the outer wall of the first model concave part is abutted to the inner wall of the second model concave part, and the second model concave part and the first model concave part are coincided to form an injection molding cavity.

Preferably, the top end surface of the upper die is provided with an air outlet penetrating through the upper die, and the bottom end surface of the lower die is provided with an injection molding port penetrating through the lower die;

and the top end in the upper die is sunken to form a hollow part in the direction deviating from the injection molding cavity.

Preferably, the opening of the hollow part is located at the highest position of the injection molding cavity, and the width of the hollow part is gradually increased from the blind end of the hollow part to the opening direction of the hollow part.

Preferably, one of the outer wall of the concave portion of the first model and the inner wall of the concave portion of the second model is provided with a sealing strip in an annular mode, the other ring of the concave portion of the first model is provided with a sealing strip clamping groove, and the sealing strip corresponds to the sealing strip clamping groove in position.

Preferably, the pipeline comprises a main pipe and branch pipes extending from one end of the main pipe to the air outlets of the injection molds, the other end of the main pipe is connected with the vacuum extraction equipment, and the branch pipes are also provided with valves used for adjusting the communication states of the branch pipes.

Preferably, the valve is a remote electronic valve

One of the above technical solutions has the following advantages or beneficial effects: the utility model discloses in, pass through pipe connection with all injection mold on same vacuum extraction equipment to reduce the purchase and the installation of vacuum extraction equipment, save the space that equipment put and reduce purchasing cost. When worth mentioning the utility model discloses in cavity extraction equipment is powerful 2BE liquid ring vacuum pump, can satisfy a plurality of injection mold's the evacuation demand of moulding plastics.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic structural view of an injection mold according to an embodiment of the present invention.

Wherein: the device comprises a vacuum extraction device 1, an injection mold 2, an upper mold 2a, a first model concave part 2aa, a lower mold 2b, a second model concave part 2ba, an air outlet 3, an injection molding opening 4, a blank part 5, a sealing strip 6, a sealing strip clamping groove 7, a pipeline 8, a main pipe 8a, a branch pipe 8b and a valve 9.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-2, a vacuum extraction system of an injection mold comprises a vacuum extraction device (1) and a plurality of injection molds (2), wherein the vacuum extraction device (1) is connected with a plurality of air outlets (3) of the injection molds (2) through pipelines (8) to communicate with each other.

The utility model discloses in, connect all injection mold (2) on same vacuum extraction equipment (1) through pipeline (8) to reduce the purchase and the installation of vacuum extraction equipment (1), save the space that equipment was put and reduce purchasing cost. When worth mentioning the utility model discloses in cavity extraction equipment is powerful 2BE liquid ring vacuum pump, can satisfy the evacuation demand of moulding plastics of a plurality of injection mold (2).

Preferably, the injection mold (2) comprises an upper mold (2 a) and a lower mold (2 b), the upper mold (2 a) is provided with a first model concave portion (2 aa), the lower mold (2 b) is provided with a second model concave portion (2 ba), after the upper mold (2 a) and the lower mold (2 b) are combined, the outer wall of the first model concave portion (2 aa) is abutted to the inner wall of the second model concave portion (2 ba), and the second model concave portion (2 ba) and the first model concave portion (2 aa) are overlapped to form an injection molding cavity.

The utility model discloses in, it is in to go up mould (2 a) direct combination in lower mould (2 b), the outer wall and the lower inner wall of going up mould (2 a) offset, the tip of going up mould (2 a) with the bottom face of lower mould (2 b) offsets, and greatly increased goes up the compactness of being connected between mould (2 a) and lower mould (2 b), avoids when moulding plastics, and the air enters into the intracavity of moulding plastics from the gap between last mould (2 a) and lower mould (2 b), influences the quality of moulding plastics.

Preferably, the top end surface of the upper die (2 a) is provided with an air outlet (3) penetrating through the upper die (2 a), and the bottom end surface of the lower die (2 b) is provided with an injection port (4) penetrating through the lower die (2 b);

the top end surface in the upper die (2 a) is sunken to form a hollow part (5) in the direction away from the injection molding cavity.

Because in the utility model discloses in, vacuum extraction equipment (1) has connected a plurality ofly injection mold (2), when a plurality of injection mold (2) start together, the power of vacuum extraction equipment (1) is probably not enough, when leading to injection mold (2) to mould plastics, inside still can have a small amount of air, for this the utility model discloses in go up the interior top end face of mould (2 a) and be provided with sunken portion of staying (5), because mouth (4) of moulding plastics is in the bottom of lower mould (2 b), when moulding plastics, along with the continuous input of injection molding material, the air is upwards extruded, finally falls into in the portion of staying (5). Avoid the air to stay in the injection molding intracavity, influence the shaping quality of die casting.

Preferably, the opening of the hollow part (5) is positioned at the highest position of the injection molding cavity, the width of the hollow part (5) is gradually increased from the blind end of the hollow part (5) to the opening direction of the hollow part (5).

Although the amount of material fed per injection is precisely controlled by a computer in the prior art, for better injection, the amount of material is typically slightly greater than the volume of the injection cavity. Causing a part of the injection molding material to flow into the recess (5). Therefore, the empty part (5) is arranged at the highest position of the injection molding cavity, and the situation can be avoided as much as possible. Simultaneously the dead end of staying idle portion (5) extremely stay idle portion (5) opening direction, the width of staying idle portion (5) increases gradually, even if partial injection molding material enters into when staying idle portion (5) shaping, also can the drawing of patterns smoothly, only need after the drawing of patterns polish the product in the unnecessary place of staying idle portion (5) formation can, can not influence finished product quality.

Preferably, one of the outer wall of the first model concave part (2 aa) or the inner wall of the second model concave part is annularly provided with a sealing strip (6), the other ring is provided with a sealing strip clamping groove (7), and the sealing strip (6) corresponds to the sealing strip clamping groove (7).

Sealing strip (6) are the rubber strip, have certain deformability go up mould (2 a) and lean on downwards to when lower mould (2 b) make up, the rubber strip can be extruded, until make up the back completely, sealing strip draw-in groove (7) arrive at sealing strip (6) department, sealing strip (6) resume deformation, fill sealing strip draw-in groove (7) to the air on both sides flows about separation sealing strip draw-in groove (7), has improved injection mold (2) airtight after the combination greatly. The quality of the finished product is ensured. Preferably, the diameter of the sealing strip (6) is selected to be 0.5-1.5 cm, so that the sealing strip (6) is prevented from being damaged by pressing when the upper die (2 a) and the lower die (2 b) are combined due to overlarge diameter.

Preferably, the pipeline (8) is composed of a main pipe (8 a) and a branch pipe (8 b) extending from one end of the main pipe (8 a) to the air outlet (3) of each injection mold (2), the other end of the main pipe (8 a) is connected with the vacuum extraction device (1), the branch pipe (8 b) is also provided with a valve (9), and the valve (9) is used for adjusting the communication state of the branch pipe (8 b).

Preferably, the valve (9) is a remote electronic valve (9).

In order to facilitate the movement of workers in the production environment, the branch pipe (8 b) and the subjectives are usually arranged at the top of a factory building, so that the height of the branch pipe (8 b) is relatively high, and a general manual valve (9) is not convenient for workers to operate, so that the valve (9) is provided with a remote electronic valve (9) and can be remotely controlled through a mobile phone or a remote controller.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like 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 present invention. 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.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The vacuum extraction system of the injection mold is characterized by comprising a vacuum extraction device (1) and a plurality of injection molds (2), wherein the vacuum extraction device (1) is connected with a plurality of air outlets (3) of the injection molds (2) through pipelines (8).

2. The vacuum extraction system of an injection mold according to claim 1, wherein the injection mold (2) comprises an upper mold (2 a) and a lower mold (2 b), the upper mold (2 a) defines a first mold recess (2 aa), the lower mold (2 b) defines a second mold recess (2 ba), after the upper mold (2 a) and the lower mold (2 b) are combined, an outer wall of the first mold recess (2 aa) abuts against an inner wall of the second mold recess (2 ba), and the second mold recess (2 ba) and the first mold recess (2 aa) are overlapped to form an injection molding cavity.

3. The vacuum extraction system of an injection mold of claim 2,

the top end face of the upper die (2 a) is provided with an air outlet (3) penetrating through the upper die (2 a), and the bottom end face of the lower die (2 b) is provided with an injection port (4) penetrating through the lower die (2 b);

4. An injection mold vacuum extraction system as claimed in claim 3, characterized in that the opening of the hollow portion (5) is located at the highest position of the injection molding cavity, and the width of the hollow portion (5) is gradually increased from the blind end of the hollow portion (5) to the opening direction of the hollow portion (5).

5. An injection mold vacuum extraction system as claimed in claim 2, characterized in that the outer wall of the first mold recess (2 aa) or the inner wall of the second mold recess is provided with a sealing strip (6) and the other ring is provided with a sealing strip slot (7), the sealing strip (6) and the sealing strip slot (7) are corresponding in position.

6. An injection mould vacuum extraction system as claimed in claim 1, characterized in that the conduit (8) consists of a main pipe (8 a) and a branch pipe (8 b) extending from one end of the main pipe (8 a) to the air outlet (3) of the respective injection mould (2), the other end of the main pipe (8 a) being connected to the vacuum extraction device (1), the branch pipe (8 b) being further provided with a valve (9), the valve (9) being used to regulate the communication state of the branch pipe (8 b).

7. An injection mold vacuum extraction system as claimed in claim 6, wherein said valve (9) is a remote electronic valve (9).