CN210098891U - Mold core with ultrasonic vibration device - Google Patents

Abstract

A mold core with an ultrasonic vibration device is characterized by comprising a mold core mechanism, an exhaust mechanism, a transducer cooling mechanism and a channel mechanism; the die core mechanism is characterized in that a die core hole is formed in a die core, a die core head and a die core rod are arranged in the die core hole, pore passages for temperature measuring wires are arranged in the die core head and the die core rod, a thermocouple for temperature measurement is arranged at the top ends of the pore passages, an exhaust mechanism is arranged on the reverse side of the die core head and on the outer surface of the die core rod, and an energy converter cooling mechanism is arranged at the lower part of the die core rod; an ultrasonic transducer is arranged at the lower end of the mold core rod; the ultrasonic vibration device fixed in the lower die of the metal die is used for carrying out ultrasonic vibration on the injected aluminum liquid, so that the filling and forming are accelerated, the ordered exhaust speed is accelerated, the product forming quality is improved, the die core is automatically and quickly cooled, the air cooling process of manual operation is omitted, and the product quality and yield are improved.

Description

A mold core with ultrasonic vibration device

technical field

The application relates to a mold for gravity casting of metal molds in the field of aluminum alloy casting, in particular to a mold core with an ultrasonic vibration device used in a lower mold of a metal mold.

Background technique

In order to keep up with the rhythm of energy saving and emission reduction, the popularity of superchargers in fuel vehicles has been developing and has strong competitiveness; the aluminum alloy compressor casing at one end of the supercharger is in the production process of metal mold gravity casting. And it is easy to generate air holes, which seriously affects the product qualification rate; up to now, the traditional lower mold degassing method still only relies on setting the exhaust plug at the top of the core of the lower mold for exhausting, and its position is just below the gate, which is often compared. Blockage occurs when the high-temperature aluminum liquid is poured, resulting in poor exhaust, resulting in air bubbles and pinholes remaining in the product, and the operator is not easy to detect at the time. After detection and detection, only the mold can be removed, the mold removed, and the exhaust plug can be replaced. Production, resulting in increased mold maintenance workload, reduced production capacity and qualified rate; although ultrasonic vibration devices are used in this industry to degas liquid aluminum or install it on the upper mold and retract after treatment, but its degassing effect It is not large, and the crystallization effect is not obvious, and the structure is complex.

Utility model content

In view of the above problems, the present application provides a mold core with an ultrasonic vibration device, which is arranged in the lower mold of the metal mold, acts on the center of the product, increases the exhaust speed, is not easy to block, and has a good crystallization effect.

According to the technical solution of the present application: a mold core with an ultrasonic vibration device, characterized in that it includes a mold core mechanism, an exhaust mechanism, a transducer cooling mechanism, and a channel mechanism;

The core mechanism comprises a core (1), a core hole (2) is arranged in the core (1), a core head (3) and a core rod are arranged in the core hole (2), A hole (5) for temperature measurement is arranged in the core head (3) and the core rod, a thermocouple (4) for temperature measurement is arranged in the top of the hole (5), and a connection is arranged on the lower side of the core rod. The positioning hole of the pin (9), the other side of the positioning hole is provided with the side opening of the hole (5) for temperature measurement; The lower end of the core rod is provided with a transducer cooling mechanism;

The exhaust mechanism includes an embossed exhaust channel (6) provided on the reverse side of the core head (3) and the outer surface of the core rod;

The transducer cooling mechanism comprises an ultrasonic transducer chamber (8) provided at the lower end of the core rod, a transducer cavity (11) is provided in the transducer chamber (8), and the transducer chamber ( 8) A compression spring (7) is arranged at the upper end, a transducer (12) is arranged in the transducer chamber (11), and a cooling air inlet channel (13) is arranged in the lower part of the transducer chamber (8). One side of the transducer chamber (8) is provided with a cooling air outlet (10), the upper part of the cooling air outlet (10) is provided with a positioning hole for a connecting pin (9), and the other side is provided with a hole (10). 5) Transition holes that communicate with the side ports;

A connecting pin (9) is provided in the upper positioning hole of the cooling air outlet (10) and the positioning hole at the lower side of the core rod;

a transducer wire (15) provided in the cooling air inlet channel (13);

The channel mechanism includes a cooling channel (14) and a composite channel (16) provided on the lower side of the mold core (1);

A gap is provided between the outer side of the transducer chamber (8) and the lower part of the core hole (2), the embossed exhaust passage (6), the cooling outlet passage (10), and the transducer cavity (11) It communicates with the gap at the lower part of the core hole (2), which is convenient for the exhaust and cooling exhaust of the exhaust channel;

The temperature measuring line is connected to the cooling channel (14) and the composite channel (16) by the hole channel (5), the exhaust channel transition hole and the cooling channel (14), and the composite channel (16) is connected to each other, wherein a temperature measuring line (17) is arranged, and the composite channel (16) is in the middle. A transducer wire (15) is provided;

The composite channel (16) is used for cooling air to enter, which can not only cool the transducer, but also cool the mold core and the mold core head, replace the existing manual operation, accelerate the condensation speed of the product, and improve the production quality;

The installed pressure of the compression spring (7) is greater than the vibration force of the transducer, so that the core head can transmit the vibration force of the transducer; ) is used as the ejection device of the product, and it is reset after the simultaneous action with other ejectors, which is convenient for product demoulding and avoids product deformation;

The top of the die core head is an outcropping hole, which is convenient for installing the thermocouple (4);

After the thermocouple (4) is installed, the top of the thermocouple (4) is flush with the top of the die core head, and is sprayed with anti-sticking aluminum heat-conducting paint for casting during use to ensure the sensitivity of the thermocouple;

The mold core provided with the ultrasonic generator is positioned in the lower mold;

The embossed exhaust passage (6) of the exhaust mechanism is lateral, located on the reverse side of the die core head (3), and the parameters for the depth priority setting are within 0.08 to 0.14 mm, and the embossing spacing is within 1 to 3 mm;

The parameters of the depth of the embossed exhaust channel on the outer surface of the core rod are preferably set within 0.08 to 0.14 mm, and the embossed spacing is within 1 to 3 mm;

The embossing on the reverse side of the core head (3) is connected with the upper plane of the core hole (2) to form a lateral exhaust channel;

The embossed exhaust passage (6) on the reverse side of the die core head (3) and the indentations of the embossed exhaust passage (6) provided on the outer surface of the die core rod are all connected to each other;

The transducer in the transducer cavity is pressed into the bottom of the transducer cavity by the lower end of the core rod;

The control method of the transducer in the mold core adopts the thermocouple (4) arranged in the top of the mold core head to sense the temperature of the molten aluminum injected in real time, and the temperature is controlled when the temperature sense is greater than about 485 degrees Celsius by 2 degrees. The microswitch of the normally open point of the instrument is closed, and the ultrasonic generator connected to it will work to make the transducer vibrate, and ultrasonic vibration treatment is performed on the molten aluminum that is being injected into the metal mold, which speeds up the filling and forming at the same time. The orderly exhaust speed and refinement of the crystal grains improve the quality of the product; when the temperature is lower than 470 degrees Celsius, the aluminum liquid has condensed, and the ultrasonic generator will stop working; at this moment, it is connected to the temperature controller. The solenoid valve opens the cooling air intake, cools the mold core and the ultrasonic generator, increases the exhaust speed and exhaust rate in an automated form, refines the crystal grains, and makes it an automatic casting equipment without residual pores;

When the thermocouple (4) measures that the temperature of the product mold core drops to the hardening temperature, the temperature controller can instruct the metal mold to open the mold, and changing the existing setting timer to open the mold results in no guarantee of the solidification hardness of the product, and it is short and easy to deform. The old process control mode with low fixed length and low output makes the product quality better;

In this application, the mold core fixed in the lower mold of the metal mold and provided with an ultrasonic vibration device is used to ultrasonically vibrate the molten aluminum being injected, so as to speed up the filling and forming, and at the same time speed up the orderly exhaust speed, and improve the product forming. Quality; the thermocouple set at the top of the die core head is used to make the ultrasonic vibration device work automatically to reduce energy consumption; the exhaust mechanism set on the underside of the die core head is used to exhaust the molten aluminum at the lower part of the die core head, which not only increases the The exhaust surface and exhaust rate are not easy to be blocked, and it can be used for a long time. It not only eliminates the pores formed by residual gas, but also enables continuous production and reduces maintenance costs. The composite channel of the cooling channel and the cooling air inlet channel is used as the lead-out channel and the cooling air inlet channel for the mold core after the transducer and the aluminum liquid condense, which can not only ensure the service life of the transducer, but also make the The mold core automatically and rapidly cools down, improves the cooling and crystallization speed of the product, eliminates the manual air-cooling process, and improves product quality and output; the compression spring set on the upper part of the generator rod is used to facilitate the product to be solidified. The device, and other ejector rods move at the same time and then reset, which is convenient for product demoulding and avoids product deformation; it adds a reliable equipment guarantee for the automatic, intelligent, high-speed and high-quality production of metal mold gravity casting of aluminum alloy compressor casings.

Description of drawings

FIG. 1 is a schematic structural diagram of the present application.

FIG. 2 is a schematic plan view of the structure of FIG. 1 .

Fig. 3 is a schematic structural diagram of the embossed exhaust passage (6) provided on the reverse side of the top of the die core head (3).

Figure 4 is a schematic structural diagram of the embossed exhaust passage (6) provided on the outer surface of the lower core rod of the core head (3).

FIG. 5 is a schematic structural diagram of the present application disposed in the lower mold of the metal mold.

Detailed ways

The specific embodiments of the present application will be further described below with reference to the accompanying drawings.

In the figure, it includes the mold core (1), the mold core hole (2), the mold core head (3), the thermocouple (4), the hole for the temperature measurement line (5), the embossed exhaust channel (6), the compression spring (7), transducer chamber (8), connecting pin (9), cooling outlet duct (10), transducer cavity (11), transducer (12), wire inlet duct (13), cooling duct (14), transducer wire (15), composite channel (16), temperature measuring wire (17), compressor casing product (18), upper mold (19), mold heating tube (20), ejector rod (21) ), lower mold composite channel (22), lower mold (23), compressor casing product flow channel (24), sprue cup (25), gate (26), composite channel interface (27), connecting pin mounting holes (28), a top plate (29) equipped with a top rod and a return spring, etc.

Figure 1 shows a mold core with an ultrasonic vibration device;

According to the technical solution of the present application, a mold core with an ultrasonic vibration device includes a mold core mechanism, an exhaust mechanism, a transducer cooling mechanism, and a channel mechanism;

The mold core mechanism includes a mold core (1), a mold core hole (2), a mold core head (3), a mold core rod, a hole (5) for a temperature measuring wire, a thermocouple (4), and a connecting pin (9). ), the side opening of the hole (5) for the temperature measuring wire, the connecting pin mounting hole (28), and the temperature measuring wire (17); the core hole (2) is arranged in the core (1), and the The core rod with the core head (3) is arranged in the core hole (2), the hole (5) for the temperature measuring wire is set in the core rod with the core head (3), the thermoelectric The coupler (4) is arranged in the top end of the hole (5), the positioning hole of the connecting pin (9) is arranged on the lower side of the core rod, and the side opening of the hole (5) for the temperature measurement line is arranged in the positioning hole The temperature measuring wire (17) is arranged in the hole (5); the connecting pin mounting hole (28) is arranged on one side of the middle of the mold core (1), and the positioning of the connecting pin (9) hole corresponding;

The exhaust mechanism includes embossed exhaust channels (6) arranged on the reverse side of the die core head (3) and on the outer surface of the die core rod, and communicated with each other after being manufactured;

the transducer cooling mechanism is arranged on the lower end of the core rod;

The transducer cooling mechanism includes a transducer chamber (8), a transducer cavity (11), a compression spring (7), a transducer (12), a cooling air inlet channel (13), a cooling outlet an air duct (10), a connecting pin (9), a transition hole; the transducer chamber (8) is arranged at the lower part of the core rod, and the transducer chamber (11) is arranged in the transducer chamber (8) , the compression spring (7) is arranged on the top of the transducer chamber (8), the transducer (12) is arranged in the transducer cavity (11), and the cooling air inlet channel (13) ) is arranged at the lower part of the transducer chamber (8), the cooling air outlet (10) is arranged on one side of the transducer chamber (8), and the positioning hole of the connecting pin (9) is arranged at the cooling outlet In the upper part of the channel (10), the transition hole communicated with the side opening of the channel (5) is arranged on the other side of the positioning hole;

The connecting pin (9) is arranged in the positioning hole of the connecting pin (9) on the upper part of the cooling air outlet (10) and the positioning hole on the lower side of the core rod;

The transducer wire (15) is arranged in the cooling air inlet channel (13);

The channel mechanism includes a cooling channel (14) and a composite channel (16); the cooling channel (14) is arranged on one side of the lower part of the core hole (2), and the composite channel (16) is arranged on the lower part of the cooling channel (14). On one side, two holes pass through;

A gap is provided between the outer side of the transducer chamber (8) and the lower part of the core hole (2), the embossed exhaust passage (6), the cooling outlet passage (10), and the transducer cavity (11) It communicates with the gap at the lower part of the core hole (2), which is convenient for the exhaust and cooling exhaust of the exhaust channel;

The temperature measuring line is connected with the cooling channel (14) and the composite channel (16) by the hole channel (5), the exhaust channel transition hole and the cooling channel (14), and the composite channel (16) is connected to each other, and a temperature measuring line (17) is arranged therein, and the transducer wire (15) ) is arranged in the composite channel (16);

The composite channel (16) is used for cooling air to enter, which can not only cool the transducer, but also cool the mold core and the mold core head, replace the existing manual operation, accelerate the condensation speed of the product, and improve the production quality;

The installed pressure of the compression spring (7) is greater than the vibration force of the transducer;

The compression spring (7) enables the core head (3) to be used as the ejection device of the product after the product is solidified, and resets after the simultaneous action with other ejector pins, which facilitates the product ejection and avoids the deformation of the product;

The top of the die core head is an outcropping hole, which is convenient for installing the thermocouple (4);

After the thermocouple (4) is installed, the top of the thermocouple (4) is flush with the top of the die core head, and is sprayed with anti-sticking aluminum heat-conducting paint for casting during use to ensure the sensitivity of the thermocouple;

The embossed exhaust passage (6) of the exhaust mechanism is lateral, located on the reverse side of the die core head (3), and the parameters for the depth priority setting are within 0.08 to 0.14 mm, and the embossing spacing is within 1 to 3 mm;

The parameters of the depth of the embossed exhaust channel on the outer surface of the core rod are preferably set within 0.08 to 0.14 mm, and the embossed spacing is within 1 to 3 mm;

The embossing on the reverse side of the core head (3) is connected with the upper plane of the core hole (2) to form a lateral exhaust channel;

The embossed exhaust passage (6) on the reverse side of the die core head (3) and the indentations of the embossed exhaust passage (6) provided on the outer surface of the die core rod are all connected to each other;

The transducer in the transducer cavity is pressed into the bottom of the transducer cavity by the lower end of the core rod;

When the thermocouple (4) measures that the temperature of the product mold core drops to the hardening temperature, the temperature controller can instruct the metal mold to open the mold, and changing the existing setting timer to open the mold results in no guarantee of the solidification hardness of the product, and it is short and easy to deform. The old process control mode with low fixed length and low output makes the product quality better;

The mold core with the ultrasonic vibration device is positioned in the lower mold of the metal mold with the mold heating tube (20), the metal mold is first heated to the process value, and the lower mold core is placed in the compressor casing product flow channel (24) After the upper mold (19) and the lower mold (23) are closed, the pouring cup (25) is placed in the upper mold, and the molten aluminum is injected into the pouring cup. For real-time sensing, when the temperature is greater than 485 degrees Celsius, plus or minus 2 degrees Celsius, the micro switch of the normally open point of the temperature controller is closed, and the ultrasonic generator connected to this will work to make the transducer vibrate, and the metal mold is being injected. The molten aluminum is ultrasonically vibrated, and the entrained gas is discharged from the embossed exhaust channel (6) on the reverse side of the die core head (3), which speeds up the filling and forming, and also accelerates the orderly exhaust speed and refinement. The crystal grains are improved, and the quality of the product is improved; when the temperature is lower than 470 degrees Celsius, the molten aluminum has condensed, and the ultrasonic generator will stop working; at this moment, the solenoid valve connected to the temperature controller opens the cooling and air intake, from the connection Cool the core and ultrasonic generator in the composite channel interface (27) of the lower mold composite channel (22) port, refine the crystal grains in an automated manner, and cast the compressor casing with the gate (26). Product (18), making it an automated casting equipment with no residual pores;

In this application, the ultrasonic vibration device fixed in the lower mold of the metal mold is used to ultrasonically vibrate the molten aluminum being injected, so as to speed up the filling and forming, speed up the orderly exhaust speed, and improve the product forming quality; The thermocouple at the top of the core head makes the ultrasonic vibration device work automatically, reducing energy consumption; the exhaust mechanism set on the reverse side of the core head is used to exhaust the inclusion gas poured in the molten aluminum at the lower part of the core head, which not only increases the The exhaust surface and exhaust rate are not easy to be blocked, and it can be used for a long time. It not only eliminates the pores formed by residual gas, but also enables continuous production and reduces maintenance costs. The composite channel of the cooling channel and the cooling air inlet channel is used as the lead-out channel and the cooling air inlet channel for the mold core after the transducer and the aluminum liquid condense, which can not only ensure the service life of the transducer, but also make the The mold core automatically and rapidly cools down, improves the cooling and crystallization speed of the product, eliminates the manual air-cooling process, and improves product quality and output; the compression spring set on the upper part of the generator rod is used to facilitate the product to be solidified. The device, and the top plate (29) equipped with the ejector rod (21) and the return spring move at the same time and then reset, which facilitates product demoulding and avoids product deformation; it is an automatic, intelligent, high-speed, and high-quality gravity casting for the metal mold of the aluminum alloy compressor casing. The production adds reliable equipment support.

Claims (1)

1. A mold core with an ultrasonic vibration device is characterized by comprising a mold core mechanism, an exhaust mechanism, a transducer cooling mechanism and a channel mechanism;

the mold core mechanism comprises a mold core (1), a mold core hole (2) is formed in the mold core (1), a mold core head (3) and a mold core rod are arranged in the mold core hole (2), a temperature measuring pore channel (5) is formed in the mold core head (3) and the mold core rod, a temperature measuring thermocouple (4) is arranged in the top end of the pore channel (5), a positioning hole of a connecting pin (9) is formed in the lower side of the mold core rod, and a side opening of the temperature measuring pore channel (5) is formed in the other side of the positioning hole; an exhaust mechanism is arranged on the reverse side of the die core head (3) and the outer surface of the die core rod, and an energy converter cooling mechanism is arranged at the lower end part of the die core rod;

the exhaust mechanism comprises an embossing exhaust channel (6) arranged on the reverse side of the die core head (3) and the outer surface of the die core rod;

the transducer cooling mechanism comprises an ultrasonic transducer chamber (8) arranged at the lower end part of a mold core rod, a transducer cavity (11) is arranged in the transducer chamber (8), a pressure spring (7) is arranged at the upper end of the transducer chamber (8), a transducer (12) is arranged in the transducer cavity (11), a cooling air inlet line channel (13) is arranged in the lower part of the transducer chamber (8), a cooling air outlet channel (10) is arranged in one side of the transducer chamber (8), a positioning hole of a connecting pin (9) is arranged at the upper part of the cooling air outlet channel (10), and a transition hole communicated with a side port of the pore channel (5) is arranged in the other side of the cooling air outlet channel (10);

a connecting pin (9) is arranged in a positioning hole at the upper part of the cooling air outlet channel (10) and a positioning hole at the lower side of the core rod;

a transducer lead (15) is arranged in the cooling air inlet line (13);

the channel mechanism comprises a cooling channel (14) and a composite channel (16) which are arranged on one side of the lower part of the mold core (1);

gaps are formed between the outer side of the energy converter chamber (8) and the lower parts of the die core holes (2), and the embossing exhaust channel (6), the cooling exhaust channel (10), the energy converter cavity (11) and the gaps at the lower parts of the die core holes (2) are communicated through inertia, so that exhaust and cooling exhaust of the exhaust channel are facilitated;

the temperature measuring line is communicated with the cooling channel (14) and the composite channel (16) through the pore channel (5) and the exhaust channel transition hole, wherein the temperature measuring line (17) is arranged, and the transducer lead (15) is arranged in the composite channel (16);

the composite channel (16) is used for cooling air to enter, not only can cool the transducer, but also can ensure the sensitivity of the thermocouple by keeping the top end of the thermocouple (4) flush with the top end of the die core head after the thermocouple (4) is installed and spraying anti-sticking aluminum heat-conducting coating for casting to protect the thermocouple when in use;

the mold core provided with the ultrasonic generator is positioned in the lower mold;

the embossing on the reverse side of the die core head (3) is connected with the upper plane of the die core hole (2) to form a lateral exhaust channel;

the embossing exhaust channel (6) on the reverse side of the die core head (3) is communicated with the concave grains of the embossing exhaust channel (6) arranged on the outer surface of the die core rod.

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