Die device capable of exhausting smoke under negative pressure

Abstract

The utility model discloses a mold device capable of exhausting smoke under negative pressure, which comprises a mold assembly, a mold assembly, a mold cover, a mold cover, a mold cover and a mold cover, the mold assembly comprises an upper mold, a lower mold and a sand core positioned between the upper mold and the lower mold, a cavity is formed among the upper mold, the lower mold and the sand core, and the cavity is filled with metal liquid to form a required casting, a smoke exhaust channel is arranged on one horizontal side of the lower mold or the upper mold, and the cavity is communicated with the outside through the smoke exhaust channel; the smoke exhaust assembly comprises a negative pressure pipe extending in the horizontal direction, a ventilation pipe located in the negative pressure pipe and air supply equipment used for supplying air to the ventilation pipe, one end of the negative pressure pipe is connected with the smoke exhaust channel, the ventilation pipe extends along the negative pressure pipe, an air outlet of the ventilation pipe is arranged back to the smoke exhaust channel, and the air supply equipment is used for supplying air to the ventilation pipe. A negative pressure channel is formed between the ventilation pipe and the negative pressure pipe, and the ventilation pipe conducts ventilation so that smoke can flow to the negative pressure channel from the smoke exhaust channel. According to the utility model, the flue gas can be quickly discharged, and the product yield is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of casting, in particular to a mold device capable of exhausting smoke under negative pressure. Background Art

[0002] Since high-temperature molten metal will produce gas and smoke during the casting process, the die-casting mold will be equipped with an exhaust channel. The exhaust channel of the die-casting mold is the channel for discharging the high-temperature and high-pressure gas that is displaced in the mold cavity during the process of high-temperature and high-pressure molten metal filling the mold cavity. That is, its main function is to discharge the high-temperature and high-pressure gas in the mold cavity.

[0003] In the past, the exhaust methods designed for this type of casting molds were generally exhaust grooves, ejector pins, and inserts. These exhaust methods are all natural exhaust. The large amount of smoke generated by the high temperature of the mold's coated sand cannot be effectively and quickly discharged, which will cause the casting to have poor appearance and poor internal quality due to trapped air. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a mold device capable of exhausting smoke under negative pressure, which can quickly exhaust smoke, improve product yield, and reduce production costs.

[0005] According to the first aspect of the utility model, a mold device capable of exhausting smoke under negative pressure comprises: a mold assembly, comprising an upper mold, a lower mold, and a sand core located between the upper mold and the lower mold, a cavity is formed between the upper mold, the lower mold and the sand core, the cavity is filled with metal liquid to form a desired casting, and a smoke exhaust channel is arranged on a horizontal side of the lower mold or the upper mold, and the smoke exhaust channel connects the cavity with the outside; a smoke exhaust assembly comprises a negative pressure pipe extending in a horizontal direction, a ventilation pipe located inside the negative pressure pipe, and an air supply device for supplying air to the ventilation pipe, one end of the negative pressure pipe is connected to the smoke exhaust channel, the ventilation pipe extends along the negative pressure pipe, the air outlet of the ventilation pipe is arranged back to the smoke exhaust channel, a negative pressure channel is formed between the ventilation pipe and the negative pressure pipe, and the ventilation pipe ventilates so that smoke flows from the smoke exhaust channel to the negative pressure channel.

[0006] A mold device capable of exhausting smoke under negative pressure according to an embodiment of the utility model has at least the following beneficial effects:

[0007] 1. The utility model sets a negative pressure pipe, a vent pipe and an air supply device, uses the air supply device to supply air to the vent pipe, and the vent pipe vents to the negative pressure pipe, so that the smoke flows to the outside, and a low-pressure area is formed near the air outlet of the vent pipe. The smoke generated by the cavity die-casting of the mold is discharged through the smoke exhaust channel, and a high-pressure area is formed inside the smoke exhaust channel. Therefore, the smoke flows from the high-pressure area to the low-pressure area, so that the smoke generated by high temperature is quickly discharged, reducing the problem of poor appearance and internal quality of castings caused by smoke.

[0008] 2. The utility model makes the negative pressure pipe extend in the horizontal direction, and the ventilation pipe extends along the negative pressure pipe, thereby avoiding the negative pressure pipe and the ventilation pipe extending in the upward direction. Therefore, even under the condition of small negative pressure, the smoke in the cavity of the mold can be quickly discharged, and the horizontally extended negative pressure pipe can greatly improve the efficiency of smoke emission, so that lower power consumption gas supply equipment can be used for gas supply.

[0009] According to some embodiments of the utility model, the smoke exhaust assembly includes a 7-shaped air supply pipe, which is arranged on the horizontal outer side of the lower mold, one end of the air supply pipe is connected to the air supply equipment, and the other end of the air supply pipe is connected to the ventilation pipe after passing through the negative pressure pipe.

[0010] According to some embodiments of the utility model, the air supply pipe has a first connecting pipe portion connected to the air supply equipment, and a support block is provided on a horizontal side of the lower mold, and the support block is used to support the first connecting pipe portion.

[0011] According to some embodiments of the present utility model, the air supply pipe has a second connecting pipe portion, the second connecting pipe portion connects the first connecting pipe portion and the ventilation pipe, and the diameter of the second connecting pipe portion is smaller than the diameter of the negative pressure pipe.

[0012] According to some embodiments of the present invention, the first connecting pipe portion is provided with a quick connector, the gas supply device is provided with an output pipe, and the output pipe is provided with an interface for quick connection with the quick connector.

[0013] According to some embodiments of the present utility model, the sand core is one of a rod body extending in a curved manner, a rod body extending in a straight line, or a rod body extending in a combination of a straight line and a curved manner.

[0014] According to some embodiments of the present utility model, the cavity is a strip-shaped cavity, one end of the strip-shaped cavity is a pouring port, and the other end of the strip-shaped cavity is connected to the smoke exhaust channel.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 This is a schematic structural diagram of a mold device capable of exhausting smoke under negative pressure according to an embodiment of the utility model;

[0018] Figure 2 for Figure 1 An exploded view of a mold device capable of exhausting smoke under negative pressure is shown;

[0019] Figure 3 for Figure 1 A cross-sectional view of a smoke exhaust component of a mold device capable of exhausting smoke under negative pressure is shown.

[0020] Figure markings: 100 - lower mold, 110 - sand core, 120 - cavity, 130 - smoke exhaust channel, 140 - negative pressure pipe, 150 - ventilation pipe, 160 - negative pressure channel, 170 - air supply pipe, 180 - first connecting pipe part, 190 - support block, 200 - second connecting pipe part, 210 - quick connector, 220 - pouring gate. DETAILED DESCRIPTION

[0021] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0022] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] A mold device capable of exhausting smoke under negative pressure according to an embodiment of the utility model will be described below in conjunction with the accompanying drawings.

[0026] Reference Figure 1 A mold device capable of exhausting smoke under negative pressure according to an embodiment of the utility model comprises a mold component and a smoke exhaust component.

[0027] Among them, refer to Figure 1 and Figure 2 The mold assembly includes an upper mold, a lower mold 100, and a sand core 110 located between the upper mold and the lower mold 100. A cavity 120 is formed between the upper mold, the lower mold 100 and the sand core 110. The cavity 120 is filled with metal liquid to form a desired casting. A smoke exhaust channel 130 is provided on a horizontal side of the lower mold 100 or the upper mold, and the smoke exhaust channel 130 connects the cavity 120 with the outside.

[0028] It can be understood that the upper mold is configured to be movable up and down (the upper mold is not shown in the diagram), and the lower mold 100 is configured to be fixed. The lower mold 100 can hold a sand core 110. When the upper mold and the lower mold 100 are closed, a cavity 120 is formed between the upper mold, the lower mold 100 and the sand core 110, and the cavity 120 is filled with liquid metal to form the desired casting.

[0029] In order to facilitate the arrangement of the external pipe communicating with the smoke exhaust channel 130 , the smoke exhaust channel 130 may be disposed in the lower mold 100 , so that the external pipe can be easily fixed.

[0030] Specifically, the sand core 110 is a rod body extending in a curved manner, a rod body extending in a straight line, or a rod body extending in a straight line and in a curved manner. Therefore, the cast part is a curved pipe or a straight pipe, and the smoke exhaust assembly can be applied to a mold for casting pipe fittings.

[0031] In a further embodiment of the present invention, the cavity 120 is a strip-shaped cavity, one end of the strip-shaped cavity is a pouring port 220 , and the other end of the strip-shaped cavity is connected to the smoke exhaust channel 130 .

[0032] The metal liquid enters the strip-shaped cavity from the pouring port 220 , and at the same time, the smoke generated by the high temperature flows from the pouring port 220 to the smoke exhaust channel 130 , so that the smoke is quickly discharged.

[0033] Among them, refer to Figure 1 and Figure 3 The smoke exhaust component includes a negative pressure pipe 140 extending in a horizontal direction, a ventilation pipe 150 located inside the negative pressure pipe 140, and an air supply device for supplying air to the ventilation pipe 150. One end of the negative pressure pipe 140 is connected to the smoke exhaust channel 130. The ventilation pipe 150 extends along the negative pressure pipe 140. The air outlet of the ventilation pipe 150 is arranged to face away from the smoke exhaust channel 130. A negative pressure channel 160 is formed between the ventilation pipe 150 and the negative pressure pipe 140. The ventilation pipe 150 is ventilated to allow smoke to flow from the smoke exhaust channel 130 to the negative pressure channel 160.

[0034] An air supply device is used to supply air to the ventilation pipe 150 (the air supply device is not shown in the diagram), and the ventilation pipe 150 ventilates the negative pressure pipe 140 to allow the smoke to flow to the outside. A low-pressure area is formed near the air outlet of the ventilation pipe 150, and the smoke generated by die-casting in the cavity 120 of the mold is discharged through the smoke exhaust channel 130. A high-pressure area is formed inside the smoke exhaust channel 130. As a result, the smoke flows from the high-pressure area to the low-pressure area, so that the smoke generated by high temperature is quickly discharged, reducing the problem of poor appearance and internal quality of castings caused by smoke.

[0035] In some embodiments of the present invention, referring to Figure 1 The smoke exhaust assembly includes a 7-shaped air supply pipe 170, which is arranged on the horizontal outer side of the lower mold 100. One end of the air supply pipe 170 is connected to the air supply device, and the other end of the air supply pipe 170 passes through the negative pressure pipe 140 and is connected to the ventilation pipe 150.

[0036] The air supply pipe 170 is arranged in a 7-shape on the horizontal outer side of the lower mold 100, so that the smoke exhaust component structure is more compact and the space occupied by the smoke exhaust component is reduced.

[0037] In some specific embodiments of the present invention, the air supply pipe 170 has a first connecting pipe portion 180 connected to the air supply device, and a support block 190 is provided on a horizontal side of the lower mold 100, and the support block 190 is used to support the first connecting pipe portion 180.

[0038] Therefore, the support block 190 is used to support the air supply pipe 170 to prevent the air supply pipe 170 from being suspended in the air and causing bending and deformation.

[0039] In some specific embodiments of the present invention, the first connecting pipe portion 180 is provided with a quick connector 210, the gas supply equipment is provided with an output pipe, and the output pipe is provided with an interface for quick connection with the quick connector 210, so that the output pipe of the gas supply equipment and the gas supply pipe 170 are detachable.

[0040] In a further embodiment of the present invention, the air supply pipe 170 has a second connecting pipe portion 200, which connects the first connecting pipe portion 180 and the ventilation pipe 150. The diameter of the second connecting pipe portion 200 is smaller than the diameter of the negative pressure pipe 140, thereby avoiding the diameter of the second connecting pipe portion 200 being too large and ensuring that the negative pressure channel 160 has sufficient space for smoke exhaust.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A mold device capable of exhausting smoke under negative pressure, characterized in that: include: A mold assembly comprises an upper mold, a lower mold (100), and a sand core (110) located between the upper mold and the lower mold (100); a cavity (120) is formed between the upper mold, the lower mold (100), and the sand core (110); the cavity (120) is filled with metal liquid to form a desired casting; a smoke exhaust channel (130) is provided on a horizontal side of the lower mold (100) or the upper mold; the smoke exhaust channel (130) connects the cavity (120) with the outside; A smoke exhaust component comprises a negative pressure pipe (140) extending in a horizontal direction, a ventilation pipe (150) located inside the negative pressure pipe (140), and an air supply device for supplying air to the ventilation pipe (150); one end of the negative pressure pipe (140) is connected to the smoke exhaust channel (130); the ventilation pipe (150) extends along the negative pressure pipe (140); an air outlet of the ventilation pipe (150) is arranged to face away from the smoke exhaust channel (130); a negative pressure channel (160) is formed between the ventilation pipe (150) and the negative pressure pipe (140); the ventilation pipe (150) is ventilated so that smoke flows from the smoke exhaust channel (130) to the negative pressure channel (160).

2. A mold device capable of exhausting smoke under negative pressure according to claim 1, characterized in that: The smoke exhaust assembly comprises a 7-shaped air supply pipe (170), wherein the air supply pipe (170) is arranged on the horizontal outer side of the lower mold (100), one end of the air supply pipe (170) is connected to the air supply device, and the other end of the air supply pipe (170) passes through the negative pressure pipe (140) and is connected to the ventilation pipe (150).

3. A mold device capable of exhausting smoke under negative pressure according to claim 2, characterized in that: The air supply pipe (170) has a first connecting pipe portion (180) connected to the air supply device, and a support block (190) is provided on a horizontal side of the lower mold (100), and the support block (190) is used to support the first connecting pipe portion (180).

4. A mold device capable of exhausting smoke under negative pressure according to claim 3, characterized in that: The air supply pipe (170) has a second connecting pipe portion (200), the second connecting pipe portion (200) connecting the first connecting pipe portion (180) and the ventilation pipe (150), and the diameter of the second connecting pipe portion (200) is smaller than the diameter of the negative pressure pipe (140).

5. The mold device capable of exhausting smoke under negative pressure according to claim 3, characterized in that: The first connecting pipe portion (180) is provided with a quick connector (210), the gas supply device is provided with an output pipe, and the output pipe is provided with an interface for quick connection with the quick connector (210).

6. The mold device capable of exhausting smoke under negative pressure according to claim 1, characterized in that: The sand core (110) is one of a rod body extending in a curved manner, a rod body extending in a straight line, or a rod body extending in a straight line and in a curved manner.

7. A mold device capable of exhausting smoke under negative pressure according to claim 6, characterized in that: The cavity (120) is a strip-shaped cavity, one end of the strip-shaped cavity is a pouring port (220), and the other end of the strip-shaped cavity is in communication with the smoke exhaust channel (130).

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