CN111375740A

CN111375740A - Vacuum suction device for mold

Info

Publication number: CN111375740A
Application number: CN202010199625.0A
Authority: CN
Inventors: 马广兴; 刘桂平; 奚道伟; 焦亚林
Original assignee: Suzhou Guangxing Mold Co Ltd
Current assignee: Suzhou Guangxing Mold Co Ltd
Priority date: 2020-03-20
Filing date: 2020-03-20
Publication date: 2020-07-07

Abstract

The invention discloses a vacuum suction device for a mold, which comprises: the movable template is provided with a movable mold core; the fixed die plate is provided with a fixed die core, and the movable die core and the fixed die core are combined to form a die cavity; the vacuum absorbing piece comprises a first vacuum absorbing piece embedded with the fixed template and a second vacuum absorbing piece embedded with the movable template; when the movable mould plate and the fixed mould plate are closed, the first vacuum suction piece and the second vacuum suction piece are combined together to form an air flow channel, and the air flow channel is communicated with the mould cavity to discharge air in the mould cavity to form a vacuum state. The vacuum suction device for the mold has the advantages that the vacuum suction piece is arranged to suck a large amount of air in the mold cavity out of the mold cavity to form a vacuum state, so that the bubbling phenomenon is reduced in the product forming process, and the service life of the product is prolonged.

Description

Vacuum suction device for mold

Technical Field

The invention relates to the field of molds, in particular to a mold vacuum suction device.

Background

The die casting is a metal casting process and is characterized by that it utilizes the inner cavity of die to apply high pressure to molten metal to cast the required workpiece.

In the field of die casting, it is well known to use different structures of a mold vacuum suction device to achieve a vacuum state in a cavity. In the process of researching and realizing the vacuum state of the cavity, the inventor finds that the mold vacuum suction device in the prior art has at least the following problems:

firstly, in the process of high-pressure casting with molten metal, a large amount of gas exists in a mold cavity, and the gas can cause high gas content in a product formed by casting molten metal, so that bubbles are generated in the product, and the mechanical property of the product is influenced.

In view of the above, it is necessary to develop a mold vacuum apparatus to solve the above problems.

Disclosure of Invention

Aiming at the defects in the prior art, the invention mainly aims to provide the mould vacuum suction device, which is used for sucking a large amount of air in a mould cavity out of the mould cavity by arranging the vacuum suction piece so as to form a vacuum state, and the service life of a product is prolonged.

To achieve the above objects and other advantages in accordance with the present invention, there is provided a mold vacuum suction apparatus, comprising:

the movable mould plate is internally provided with a movable mould core;

the fixed die plate is internally provided with a fixed die core, and the movable die core is matched with the fixed die core to form a die cavity;

the vacuum absorbing piece comprises a first vacuum absorbing piece embedded with the fixed template and a second vacuum absorbing piece embedded with the movable template;

when the movable mold plate and the fixed mold plate are closed, the first vacuum absorbing piece and the second vacuum absorbing piece are combined together to form an air flow channel, and the air flow channel is communicated with the mold cavity to discharge air in the mold cavity to form a vacuum state.

Preferably, the first vacuum absorbing piece is provided with first bulges which are arranged in an array shape and are upwards sunken towards the movable template;

second bulges which are arranged in an array manner are arranged on the surface of the second vacuum absorbing piece facing the first vacuum absorbing piece;

wherein the first protrusion is matched with the second protrusion.

Preferably, the side wall of the first vacuum absorbing part is provided with a vacuum absorbing hole;

wherein, the vacuum suction hole is communicated with the airflow channel.

Preferably, a first cooling channel is arranged in the first vacuum absorbing piece;

preferably, a second cooling channel is arranged in the second vacuum suction piece.

Preferably, a second sealing groove is further formed on the surface of the first vacuum absorbing part facing the second vacuum absorbing part.

Preferably, a first sealing groove is formed in the intersection joint of the fixed die plate/the movable die plate and the movable die plate/the fixed die plate, and a first sealing ring is arranged in the first sealing groove.

Preferably, a sliding structure is further provided, the sliding structure including:

a connector;

the pressing block is arranged right above the connector;

and a fourth sealing groove is formed in the surface of the pressing block, which is in contact with the connector.

Preferably, the surface of the connector facing the fixed die plate and/or the movable die plate is provided with a third sealing ring.

Preferably, the first sealing groove, the second sealing groove and the fourth sealing groove are tightly connected;

the first sealing ring is arranged in the first sealing groove, the second sealing groove and the fourth sealing groove.

One of the above technical solutions has the following advantages or beneficial effects: a large amount of air in the die cavity is sucked out of the die cavity by arranging the vacuum sucking piece to form a vacuum state, so that the bubbling phenomenon is reduced in the product forming process, and the service life of the product is prolonged.

Drawings

Fig. 1 is a perspective view of a mold vacuum suction apparatus according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a vacuum absorbing member according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of a vacuum absorbing member according to one embodiment of the present invention;

fig. 4 is a perspective view of a first vacuum absorbing member according to an embodiment of the present invention;

FIG. 5 is a perspective view of a second vacuum absorbing member according to an embodiment of the present invention;

fig. 6 is a top cross-sectional view of a first vacuum absorbing member according to an embodiment of the present invention;

FIG. 7 is a top cross-sectional view of a second vacuum absorbing member according to an embodiment of the present invention;

fig. 8 is a bottom view of the movable platen according to an embodiment of the present invention;

FIG. 9 is a perspective view of a partial mold vacuum apparatus according to one embodiment of the present invention;

fig. 10 is a perspective view of a proposed connector according to an embodiment of the present invention;

FIG. 11 is a perspective view of a proposed compact according to one embodiment of the present invention;

FIG. 12 is a perspective view of a partial mold vacuum apparatus according to one embodiment of the present invention;

fig. 13 is a perspective view of a slider according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in 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 obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the drawings, the shape and size may be exaggerated for clarity, and the same reference numerals will be used throughout the drawings to designate the same or similar components.

In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc., are defined with respect to the configurations shown in the respective drawings, and in particular, "height" corresponds to a dimension from top to bottom, "width" corresponds to a dimension from left to right, "depth" corresponds to a dimension from front to rear, which are relative concepts, and thus may be varied accordingly depending on the position in which it is used, and thus these or other orientations should not be construed as limiting terms.

Terms concerning attachments, coupling and the like (e.g., "connected" and "attached") refer to a relationship wherein structures are secured or attached, either directly or indirectly, to one another through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise.

According to an embodiment of the present invention, as shown in fig. 1 and 2, it can be seen that the mold vacuum sucking means includes:

a stationary platen 22 provided with a stationary core 162; a movable die plate 21 provided with a movable die core 161 and a core 163 located between the fixed die core 162 and the movable die core 161; a vacuum suction member 15 including a first vacuum suction member 151 embedded in the fixed mold plate 21 and a second vacuum suction member 151 embedded in the movable mold plate 22; after the fixed die plate 22 and the movable die plate 21 are closed, the fixed die core 162 in the fixed die plate 22 and the movable die core 161 in the movable die plate 21 are also closed, and the mold core 163 slides to a position between the fixed die core 162 and the movable die core 163 to form a mold cavity.

Referring now to fig. 3, it can be clearly understood that the first vacuum absorbing member 151 and the second vacuum absorbing member 151 are oppositely disposed to form an air flow channel 154, and the air flow channel 154 is communicated with the cavity to realize a vacuum state inside the cavity.

Referring now to fig. 4 and 5, it is more clearly illustrated that the first vacuum absorbing member 151 is provided with first protrusions 1511 arranged in an array recessed upward toward the second vacuum absorbing member 152; the second vacuum absorbing piece 152 is closely attached to the first vacuum absorbing piece 151, and second protrusions 1522 arranged in an array are arranged on the surface of the second vacuum absorbing piece 152 facing the first vacuum absorbing piece 151; specifically, the first protrusion 1511 and the second protrusion 1522 cooperate to form the airflow channel 154.

Further, the airflow channel 154 is communicated with the cavity, the first vacuum absorbing part 151 is provided with a vacuum absorbing hole 1512, and the vacuum absorbing hole 1512 is communicated with the airflow channel 154, so that smooth outflow of air in the cavity can be ensured; the shapes of the first protrusion 1511 and the second protrusion 1522 are preferably wave-shaped, the wave-shaped airflow channel 154 formed by the matching of the wave-shaped first protrusion 1511 and the wave-shaped second protrusion 1522 increases the path through which the airflow passes, and when the outside air passes through the airflow channel 154 and enters the cavity, the path is lengthened and the direction of the path is tortuous, so that the energy consumption of the outside air can be accelerated, the outside air is prevented from entering the cavity, the airflow is prevented from flowing out, the air content of the product is reduced, and the service life of the product is prolonged.

Referring to fig. 2 again, specifically, a vacuum absorbing hole 1512 is formed in a side wall of the first vacuum absorbing part 151, and after an external vacuum absorbing device is connected to the vacuum absorbing hole 1512, the vacuum absorbing device is turned on, air inside the cavity flows out along the airflow channel 154, and a vacuum state is formed in the cavity, specifically, the vacuum absorbing hole 1512 is located above the airflow channel 154, so that the air inside the cavity can be ensured to flow out smoothly, and meanwhile, it is ensured that the external air is not easy to enter the cavity through the airflow channel 154, and the cavity is further maintained in the vacuum state.

Referring to fig. 6 and 7, in particular, a first cooling channel 1513 is provided in the first vacuum absorbing member 151; a second cooling channel 1521 is arranged in the second vacuum absorbing piece 152, and cooling liquid is introduced into the first cooling channel 1513 and the second cooling channel 1512, so that the temperature of the mold can be reduced, the cooling molding of the molten metal in the cavity can be accelerated, the molding time is shortened, and the production efficiency is improved; and bubbles separated out from the product can be reduced, so that the mechanical property of the surface of the product is deteriorated.

Referring now to fig. 4, it is clearly shown that the first vacuum-absorbing member 151 is further provided with a second sealing groove 1512 on the surface facing the second vacuum-absorbing member 152. Further, referring to fig. 8, the fixed die plate 21/the movable die plate 22 is provided with a first sealing groove at the intersection of the fixed die plate 22/the movable die plate 21, and the first sealing ring 12 is arranged in the first sealing groove.

Referring now to fig. 9, it can be noted that the mold vacuum suction device is further provided with a sliding structure 13 fixedly connected to the core 163, said sliding structure 13 comprising: a connector 132; a pressing block 131 provided right above the connector 132; the sliding block 133 is fixedly connected with the connector 132, a protrusion 1311 is arranged on the rear side wall of the sliding block 133, and first guide pieces 1332 are arranged on two sides of the sliding block 133; and guide rails 134 disposed at both sides of the slider 133, wherein a fourth sealing groove 1311 (shown in fig. 10) is disposed on a surface of the guide rail 134, which is matched with the first guide 1322, where the pressing block 131 contacts the connector 132.

A third gasket 1321 (shown in fig. 11) is provided on the surface of the connector 132 facing the movable die plate 21 and/or the fixed die plate 22. Referring now again to fig. 7, in particular, the first, second, and

fourth seal grooves

1512, 1311 are close together; the first seal ring 12 is mounted in a first, second, and

fourth seal grooves

1512, 1311.

Furthermore, the first sealing groove, the second sealing groove 1512 and the fourth sealing groove 1311 are separately arranged to facilitate mounting and dismounting of each component of the mold, and the first sealing groove, the second sealing groove 1512 and the fourth sealing groove 1311 are tightly connected to facilitate integral mounting of the first sealing ring 12, the first sealing ring 12 separates a gap between each sealing groove to further separate air in an external environment, and the first sealing ring surrounds the movable mold core and the fixed mold core to keep the interior of the first sealing ring sealed.

Although the position of the first seal groove is not shown in the drawings, it should be understood that the path of the first seal groove is the same as the path of the first seal ring 12 and is on the stationary platen 21.

Referring to fig. 12, it can be understood that, the fitting position of the core block 162 and the slider 133 is provided with a fifth sealing groove 1621 on the core block 162, a fifth sealing strip is provided in the fifth sealing groove 1621, and the fifth sealing strip and the third sealing strip 1321 on the connector 132 isolate the movable surface in the mold, which can contact with the outside, from the cavity, thereby preventing the air tightness between the sliding structure 16 and the cavity.

Referring now to fig. 13, it can be noted that the core 163 is provided with a groove 1631, and the groove 1631 matches with the protrusion 1331 on the slider 133, so as to enhance the fixing strength between the slider 133 and the movable die core 163, reduce the bearing capacity of the threaded connection, and enhance the service life of the threads.

Referring now to fig. 2 again, in an embodiment, the top surface of the connector 132 is provided with a pull rod groove, and the pull rod groove is connected to a driving device by a pull rod, so as to drive the slide block 133 to move away from or close to the fixed mold plate 22 and the movable mold plate 21, and further move the mold core 163 away from or close to the movable mold core 161 and the fixed mold core 162.

Further, after the vacuum absorbing piece 15 is connected with an external vacuum absorbing device, the vacuum device is started to enable the cavity of the mold to be in a vacuum state, and molten metal is injected from the pouring gate 14; although a flow passage is not shown in the drawings, it should be understood that a flow passage should be provided between the gate 14 and the cavity, and the molten metal enters the cavity through the flow passage, and because the cavity formed by the core insert 161 and the core insert 162 is provided with sealing rings or sealing strips everywhere, it is ensured that air does not easily enter the cavity; when the molten metal is cooled, the driving device is started to drive the connector 132 to enable the slide block 133 to slide on the slide rail 134, so that the mold core 163 is far away from the movable mold core 161 and the fixed mold core 162, and the workpiece is taken out.

Referring to fig. 1 again, it can be noted that through holes are formed at four corners of the movable mold plate 22 and the fixed mold plate 21, and guide rods are sleeved in the through holes, so that the whole mold can slide in a set direction, and the mold is not easy to turn, and the manufacturing or demolding of a workpiece is affected.

The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.

While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims

1. A mold vacuum suction device, comprising:

a movable mould plate (22) which is internally provided with a movable mould core (162);

the fixed die plate (21) is internally provided with a fixed die core (161), and the movable die core (162) is matched with the fixed die core (161) to form a die cavity;

a vacuum suction member (15) including a first vacuum suction member (151) embedded in the fixed mold plate (21) and a second vacuum suction member (151) embedded in the movable mold plate (22);

when the movable mould plate (22) and the fixed mould plate (21) are closed, the first vacuum suction piece (151) and the second vacuum suction piece (151) are also combined to form an air flow channel (154), and the air flow channel (154) is communicated with the mould cavity to exhaust air in the mould cavity so as to form a vacuum state.

2. The mold vacuum suction device according to claim 1, wherein the first vacuum suction member (151) is recessed upward toward the movable platen (22) with first protrusions (1511) arranged in an array;

second bulges (1522) arranged in an array are arranged on the surface of the second vacuum absorbing piece (152) facing the first vacuum absorbing piece (151);

wherein the first protrusion (1511) mates with the second protrusion (1522).

3. The mold vacuum suction device according to claim 2, wherein the first vacuum suction member (151) is provided with vacuum suction holes (1512) on a sidewall thereof;

wherein the vacuum suction holes (1512) are in communication with the airflow channel (154).

4. The mold vacuum suction device according to claim 2, wherein the first vacuum suction member (151) is provided with a first cooling passage (1513).

5. The mold vacuum chuck as claimed in claim 2, wherein a second cooling channel (1521) is provided in the second vacuum chuck (152).

6. The mold vacuum suction device according to claim 2, wherein a second sealing groove (1512) is further provided on a surface of the first vacuum suction member (151) facing the second vacuum suction member (152).

7. The vacuum suction device for the mold according to claim 1, wherein a first sealing groove is formed at the intersection of the fixed mold plate (21)/the movable mold plate (22) and the movable mold plate (22)/the fixed mold plate (21), and a first sealing ring (12) is arranged in the first sealing groove.

8. The mold vacuum suction device according to claim 1, characterized in that a sliding structure (13) is further provided, the sliding structure (13) comprising:

a connector (132);

a pressing block (131) provided directly above the connector (132);

and a fourth sealing groove (1311) is arranged on the contact surface of the pressing block (131) and the connector (132).

9. The mold vacuum suction device according to claim 8, wherein a third sealing ring (1321) is provided on a surface of the connector (132) facing the stationary platen (21) and/or the movable platen (22).

10. The vacuum suction apparatus according to claim 7, wherein the first, second and fourth sealing grooves (1512, 1311) are tightly connected;

the first seal ring (12) is mounted in a first seal groove, a second seal groove (1512) and a fourth seal groove (1311).