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

Mold core with ultrasonic vibration device

Technical Field

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

Background

In order to keep pace with the beat of energy conservation and emission reduction, the popularization of a supercharger in fuel vehicles is always under development, and the competitiveness is strong; wherein, the aluminum alloy compressor shell at one end of the supercharger is easy to generate air holes in the production process of metal mold gravity casting, which seriously influences the product percent of pass; the traditional lower die degassing method still only depends on the top end of a die core of the lower die to exhaust, the position of the lower die degassing method is just below a pouring gate, and the lower die degassing method is blocked when being filled with high-temperature aluminum liquid, so that unsmooth air exhaust is caused, bubbles and pinholes remain in a product, an operator cannot easily find the lower die degassing method at that time, the lower die degassing method can be produced only by disassembling a die, disassembling the die and replacing the degassing plug after detection, the workload of die maintenance is increased, and the productivity and the qualification rate are reduced; in the industry, although an ultrasonic vibration device is adopted to carry out degassing treatment on the aluminum liquid or mount the aluminum liquid on an upper die and retract after the treatment, the degassing effect is not great, the crystallization effect is not obvious, and the structure is complex.

SUMMERY OF THE UTILITY MODEL

The application aims at the problems and provides the mold core with the ultrasonic vibration device, which is arranged in the lower mold of the metal mold and acts on the center of a product, improves the exhaust speed, is not easy to block and has good crystallization effect.

According to the technical scheme of the application: 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 the entry of cooling air, not only can cool the transducer, but also can cool the mold core and the mold core head, replaces the existing manual operation, accelerates the product condensation speed, and improves the product quality;

the pressure of the pressure spring (7) after installation is larger than the vibration force of the transducer, so that the mold core head can transmit the vibration force of the transducer; the pressure spring (7) is a device which is convenient for taking the die core head (3) as a product after the product is solidified and resetting after acting with other ejector rods simultaneously, so that the product is convenient to demould, and the product is prevented from deforming;

the top end of the die core head is provided with an outcrop hole, so that a thermocouple (4) is convenient to install;

after the thermocouple (4) is installed, the top end of the thermocouple (4) is flush with the top end of the die core head, and anti-sticking aluminum heat-conducting coating for casting is sprayed for protection when the thermocouple is used, so that the sensitivity of the thermocouple is ensured;

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

the embossing exhaust channel (6) of the exhaust mechanism is in a lateral direction and is positioned on the reverse side of the die core head (3), the depth of the embossing exhaust channel is preferably set within 0.08-0.14 mm, and the embossing distance is within 1-3 mm;

the parameters of the prior setting of the depth of the embossing exhaust channel on the outer surface of the die core rod are within 0.08-0.14 mm, and the embossing interval is within 1-3 mm;

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;

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

the control mode of the transducer in the mold core is that a thermocouple (4) arranged in the top end of a mold core head is used for sensing the temperature of injected aluminum liquid in real time, when the temperature is higher than about 2 ℃ of 485 ℃, a microswitch at a normally-open point of a temperature controller is closed, an ultrasonic generator connected with the microswitch works to vibrate the transducer, the aluminum liquid injected into the metal mold is subjected to ultrasonic vibration treatment, the filling and forming are accelerated, the ordered exhaust speed is accelerated, crystal grains are refined, and the product quality is improved; when the temperature is lower than 470 ℃, the aluminum liquid is condensed, and the ultrasonic generator stops working; at the moment, an electromagnetic valve connected with a temperature controller is opened for cooling air inlet, the mold core and the ultrasonic generator are cooled, the exhaust speed and the exhaust rate are improved in an automatic mode, and crystalline grains are refined to form automatic casting equipment without residual air holes;

when the thermocouple (4) measures that the temperature of the product mold core is reduced to the hardening temperature, the temperature controller can instruct the metal mold to open the mold, and the old process control mode that the solidification hardness of the product is not guaranteed, the fixed length is easy to deform and the fixed length yield is low due to the fact that the mold opening of the existing timer is set is changed, so that the production quality is better;

the mold core fixed in the lower mold of the metal mold and provided with the ultrasonic vibration device is adopted to carry out ultrasonic vibration on the injected aluminum liquid, so that the filling and forming are accelerated, the ordered exhaust speed is accelerated, and the product forming quality is improved; the thermocouple arranged at the top end of the die core head is adopted to enable the ultrasonic vibration device to automatically work, so that energy consumption is reduced; the lower part of the die core head is exhausted by adopting the exhaust mechanism arranged on the lower side surface of the die core head, so that the exhaust surface and the exhaust speed are increased, the die core head is not easy to block, the long-term use can be kept, the air holes formed by residual air are eliminated, the continuous production can be realized, and the maintenance cost is reduced; the composite channel which is arranged in the temperature measuring line pore channel, the cooling channel and the cooling air inlet channel is used as a cooling air inlet channel for the mold core after the outgoing line channel and the transducer are condensed with the aluminum liquid, so that the service life of the transducer can be ensured, the mold core can be automatically and quickly cooled, the cooling crystallization speed of a product is improved, the air cooling process of manual operation is omitted, and the quality and the yield of the product are improved; the compression spring arranged at the upper part of the generator rod is adopted to facilitate the solidification of the product, and the mold core head is used as a product ejecting and releasing device and is reset after the product and other ejector rods simultaneously act, so that the product is convenient to demould, and the product is prevented from deforming; the method adds reliable equipment guarantee for the automatic intelligent high-speed high-quality production of metal mold gravity casting of the aluminum alloy compressor casing.

Drawings

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

Fig. 2 is a schematic top view of the structure of fig. 1.

Fig. 3 is a schematic view of the structure of the embossing vent channel (6) provided on the top and reverse side of the die core print (3).

Fig. 4 is a schematic structural diagram of an embossed vent channel (6) arranged on the outer surface of the lower core rod of the core head (3).

Fig. 5 is a schematic view of the structure of the present invention installed in a lower mold of a mold.

Detailed Description

The following description of the embodiments of the present application will be made with reference to the accompanying drawings.

The device comprises a mold core (1), mold core holes (2), a mold core head (3), a thermocouple (4), a temperature measuring line pore passage (5), an embossing exhaust passage (6), a pressure spring (7), a transducer chamber (8), a connecting pin (9), a cooling exhaust passage (10), a transducer cavity (11), a transducer (12), a wire inlet passage (13), a cooling passage (14), a transducer lead (15), a composite passage (16), a temperature measuring line (17), a compressor shell product (18), an upper mold (19), a mold heating pipe (20), an ejector rod (21), a lower mold composite passage (22), a lower mold (23), a compressor shell product passage (24), a sprue cup (25), a pouring gate (26), a composite passage interface (27), a connecting pin mounting hole (28), a top plate (29) provided with the ejector rod and a reset spring and the like.

FIG. 1 shows a mold core with an ultrasonic vibration device;

according to the technical scheme of the application, the mold core with the ultrasonic vibration device comprises a mold core mechanism, an exhaust mechanism, an energy converter cooling mechanism and a channel mechanism;

the mold core mechanism comprises a mold core (1), a mold core hole (2), a mold core head (3), a mold core rod, a temperature measuring line pore passage (5), a thermocouple (4), a positioning hole for a connecting pin (9), a temperature measuring line pore passage (5) side port, a connecting pin mounting hole (28) and a temperature measuring line (17); the die core hole (2) is arranged in the die core (1), the die core rod with the die core head (3) is arranged in the die core hole (2), the temperature measuring line pore canal (5) is arranged in the die core rod with the die core head (3), the thermocouple (4) is arranged in the top end of the pore canal (5), the positioning hole of the connecting pin (9) is arranged at the lower side of the die core rod, and the side opening of the temperature measuring line pore canal (5) is arranged at the other side of the positioning hole; the temperature measuring line (17) is arranged in the pore canal (5); the connecting pin mounting hole (28) is arranged on one side of the middle part of the mold core (1) and corresponds to the positioning hole of the connecting pin (9);

the exhaust mechanism comprises embossing exhaust channels (6) which are arranged on the reverse side of the mold core head (3) and the outer surface of the mold core rod and are communicated with each other after being manufactured;

the transducer cooling mechanism is arranged at the lower end part of the die core rod;

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

the connecting pins (9) are arranged in the positioning holes of the connecting pins (9) at the upper part of the cooling air outlet channel (10) and the positioning holes at the lower side of the mold core rod;

the 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); the cooling channel (14) is arranged at one side of the lower part of the die core hole (2), the composite channel (16) is arranged at one side of the lower part of the cooling channel (14), and the two channels are communicated;

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, the temperature measuring line (17) is arranged in the composite channel (16), and the transducer lead (15) is arranged in the composite channel (16);

the composite channel (16) is used for the entry of cooling air, not only can cool the transducer, but also can cool the mold core and the mold core head, replaces the existing manual operation, accelerates the product condensation speed, and improves the product quality;

the pressure of the pressure spring (7) after installation is larger than the vibration force of the transducer;

the pressure spring (7) can enable the mold core head (3) to be used as a product ejecting and releasing device after the product is solidified, and the mold core head and other ejector rods simultaneously act and then reset, so that the product is conveniently released from the mold, and the product is prevented from deforming;

the top end of the die core head is provided with an outcrop hole, so that a thermocouple (4) is convenient to install;

after the thermocouple (4) is installed, the top end of the thermocouple (4) is flush with the top end of the die core head, and anti-sticking aluminum heat-conducting coating for casting is sprayed for protection when the thermocouple is used, so that the sensitivity of the thermocouple is ensured;

the embossing exhaust channel (6) of the exhaust mechanism is in a lateral direction and is positioned on the reverse side of the die core head (3), the depth of the embossing exhaust channel is preferably set within 0.08-0.14 mm, and the embossing distance is within 1-3 mm;

the parameters of the prior setting of the depth of the embossing exhaust channel on the outer surface of the die core rod are within 0.08-0.14 mm, and the embossing interval is within 1-3 mm;

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;

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

when the thermocouple (4) measures that the temperature of the product mold core is reduced to the hardening temperature, the temperature controller can instruct the metal mold to open the mold, and the old process control mode that the solidification hardness of the product is not guaranteed, the fixed length is easy to deform and the fixed length yield is low due to the fact that the mold opening of the existing timer is set is changed, so that the production quality is better;

the mold core with the ultrasonic vibration device is positioned in a lower mold of a metal mold with a mold heating pipe (20), the metal mold is heated to a process value, when the gas compressor shell product runner (24) is arranged on the lower die core, the upper die (19) and the lower die (23) are closed, the sprue cup (25) is arranged in the upper die, molten aluminum is poured into the pouring cup, a thermocouple (4) in the top end of the mold core head senses the temperature of the poured molten aluminum in real time, when the temperature is more than 485 deg.C plus or minus 2 deg.C, the microswitch at the normal open point of the temperature controller is closed, the connected ultrasonic generator will work to vibrate the transducer, the aluminum liquid injected into the metal mold is subjected to ultrasonic vibration treatment, the mixed gas is discharged from an embossing exhaust channel (6) on the reverse side of the mold core head (3), the filling and forming are accelerated, the ordered exhaust speed is accelerated, the crystal grains are refined, and the product quality is improved; when the temperature is lower than 470 ℃, the aluminum liquid is condensed, and the ultrasonic generator stops working; at the moment, an electromagnetic valve connected with a temperature controller is opened for cooling and air inlet, a mold core and an ultrasonic generator are cooled from a composite channel interface (27) connected with the port of a lower mold composite channel (22), crystalline grains are refined in an automatic mode, and a compressor shell product (18) with a sprue (26) is cast to form automatic casting equipment without residual air holes;

the ultrasonic vibration device fixed in the lower die of the metal die is adopted to carry out ultrasonic vibration on the injected aluminum liquid, so that the filling and forming are accelerated, the ordered exhaust speed is accelerated, and the product forming quality is improved; the thermocouple arranged at the top end of the die core head is adopted to enable the ultrasonic vibration device to automatically work, so that energy consumption is reduced; the exhaust mechanism arranged on the reverse side of the mold core head is adopted to exhaust the mixed gas in the molten aluminum poured on the lower part of the mold core head, so that the exhaust surface and the exhaust rate are increased, the blockage is not easy to occur, the long-term use can be kept, the air holes formed by residual gas are eliminated, the continuous production can be realized, and the maintenance cost is reduced; the composite channel which is arranged in the temperature measuring line pore channel, the cooling channel and the cooling air inlet channel is used as a cooling air inlet channel for the mold core after the outgoing line channel and the transducer are condensed with the aluminum liquid, so that the service life of the transducer can be ensured, the mold core can be automatically and quickly cooled, the cooling crystallization speed of a product is improved, the air cooling process of manual operation is omitted, and the quality and the yield of the product are improved; the compression spring arranged at the upper part of the generator rod is adopted to facilitate the solidification of the product, and then the mold core head is used as a product ejecting and releasing device and is reset after simultaneously acting with a top plate (29) provided with a top rod (21) and a reset spring, so that the product is convenient to release from the mold, and the product is prevented from deforming; the method adds reliable equipment guarantee for the automatic intelligent high-speed high-quality production of metal mold gravity casting of the aluminum alloy compressor casing.

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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