CN114042888A

CN114042888A - Cooling system of cold chamber die casting machine

Info

Publication number: CN114042888A
Application number: CN202111344850.XA
Authority: CN
Inventors: 李仁智
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-15
Filing date: 2021-11-15
Publication date: 2022-02-15

Abstract

The invention discloses a cooling system of a cold chamber die casting machine, which comprises a base, wherein a fixed base plate and a fixed plate are fixedly arranged on the base from left to right, a die-casting mechanism is arranged between the fixed plate and the fixed base plate, the die-casting mechanism can punch heated molten metal into a die, an injection cylinder is fixedly arranged on the fixed plate, a pressure chamber is fixedly arranged on the fixed base plate, an exhaust groove in the die can be pre-cooled, the molten metal can be cooled and solidified in time after flowing into the exhaust groove, high-temperature molten metal is prevented from flowing outwards, an auxiliary cooling effect is achieved on the periphery of the die, when the molten metal completely enters the die, the cooling system can be automatically switched into cooling of the inner periphery and the outer periphery of the die, the molten metal in the die is rapidly cooled, the cooling time required by die-casting of a workpiece is reduced, and the die-casting work efficiency is improved.

Description

Cooling system of cold chamber die casting machine

Technical Field

The invention relates to the field of displays, in particular to a cooling system of a cold chamber die casting machine.

Background

The cold chamber die casting machine is a die casting machine which pours quantitative molten metal into an injection chamber without immersing the injection chamber and an injection punch in the molten metal, and then injects the molten metal, the molten metal injected into a die needs to be cooled and changed into solid metal again to be changed into a new die-casting workpiece, the die heat dissipation is quicker, the time required by die-casting of a single workpiece is shorter, the existing heat dissipation system needs to be started until the molten metal completely enters a grinding tool, so that the molten metal is prevented from being cooled and solidified in advance to block the subsequent molten metal to fill the die, and the overheated molten metal can overflow out of the die through an overflow groove and an exhaust groove if the molten metal cannot be cooled in time to cause certain potential safety hazard, and therefore, a heat dissipation system of the cold chamber die casting machine needs to be designed to solve the problems

Disclosure of Invention

The invention aims to provide a cooling system of a cold chamber die casting machine, which improves the efficiency of the cold chamber die casting machine in cooling molten metal and prevents the reduction of die casting quality caused by the overflow of overheated molten metal from an exhaust hole.

The invention is realized by the following technical scheme.

The cooling system of the cold chamber die casting machine comprises a base, wherein a fixed seat plate and a fixed plate are fixedly installed on the base from left to right in sequence, a die-casting mechanism is installed between the fixed plate and the fixed seat plate and can punch heated molten metal into a die, an injection cylinder is fixedly installed on the fixed plate, a pressure chamber is fixedly installed on the fixed seat plate, the left end of the injection cylinder is slidably installed with an injection rod inserted into the inner cavity of the pressure chamber, the left end of the injection rod is fixedly installed with an injection piston which can slide in the inner cavity of the pressure chamber, and a funnel is fixedly installed at the upper end of the pressure chamber.

In a preferred embodiment, a fixed die fixing plate is fixedly arranged at the left end of the fixed die fixing plate, a casting heat dissipation mechanism is arranged in the fixed die fixing plate, the left end of the fixed die fixing plate is fixedly provided with a fixed die, four heat conducting pads and casting radiating blocks which are uniformly distributed are fixedly arranged between the fixed die and the fixed die fixing plate from front to back in sequence, the heat conducting pad can transfer the heat on the fixed die to the casting radiating block, an S-shaped water flow passage is processed in the casting radiating block, so that cooling water can fully absorb the heat in the casting radiating block, three overflow chutes which are uniformly distributed are processed on the left end surface of the fixed die and can be connected with the inner cavity of the fixed die, an exhaust groove communicated with the overflow groove is processed on the left end surfaces of the fixed die and the fixed die fixing plate together, and the left end of the fixed die fixing plate is fixedly provided with an exhaust groove heat dissipation block which is in contact with the exhaust groove.

In the preferred embodiment, inlet tube, outlet pipe are installed from left to right in proper order to cover half fixed plate lower extreme, it has the control chamber to process in the cover half fixed plate, slidable mounting has control slider, it has the head and the tail respectively with the control chamber to process in the cover half fixed plate the connection of outlet pipe switch-on is three the air discharge duct water pipe of air discharge duct radiating block, it has the head and the tail respectively with the control chamber to process in the cover half fixed plate outlet pipe connection installs and communicates four the foundry goods water pipe of foundry goods radiating block, the inlet tube can with the control chamber intercommunication.

In a preferred embodiment, four pull rods which are symmetrical up and down and back and forth are fixedly mounted at the left end of the fixed seat plate, a movable seat plate is mounted on each pull rod in a sliding mode, the lower end of the movable seat plate can slide along the upper surface of the base, the left end of the movable seat plate is hinged with the elbow mechanism, a movable mold fixed plate is fixedly mounted at the right end of the movable seat plate, a movable mold is fixedly mounted at the right end of the movable mold fixed plate, a mold core is fixedly mounted in the movable mold, a connecting groove is jointly processed at the lower side of the right end of the movable mold fixed plate, a communicating pipe is fixedly mounted between the left end and the right end of the fixed mold fixed plate, the connecting groove and an inlet pipe of an inner cavity of a pressure chamber are fixedly mounted in the movable seat plate, and a hydraulic control ejector rod penetrating through the movable seat plate, the movable mold fixed plate and the mold core is mounted in the movable seat plate in a sliding mode.

In a preferred embodiment, a heat dissipation control mechanism is mounted at the lower end of the fixed die fixing plate, a sliding rod is slidably mounted at the lower end of the fixed die fixing plate, the upper end of the sliding rod is fixedly connected with the control slider, a push rod is fixedly mounted on the injection rod, and the push rod can push the sliding rod to move upwards.

In a preferred embodiment, a water tank heat dissipation mechanism is installed at the upper end of the base, and a water pump, a water tank and an industrial fan are fixedly installed at the upper end of the base from left to right in sequence.

In a preferred embodiment, a partition board is fixedly mounted at the upper end of the inner cavity of the water tank, the inner cavity of the water tank is divided into a left water chamber and a right water chamber by the partition board, the inner cavity on the left side is a cold water chamber, the inner cavity on the right side is a cooling chamber, the upper end of the right cavity is connected with the lower end of the water outlet pipe, a water pipe is connected and mounted between the lower side of the left cavity of the water tank and the water pump, and the left end of the water pump is connected with the lower end of the water inlet pipe.

In a preferred embodiment, the front end and the rear end of the water tank are fixedly provided with radiating fins, and the industrial fan can drive air flow to take away heat on the radiating fins.

In a preferred embodiment, the toggle mechanism is started to push the movable seat plate to move rightwards so that the movable mold fixed plate is tightly attached to the fixed mold fixed plate, a sufficient amount of cooling liquid is injected into the water tank, molten metal after being heated and melted is poured into an inner cavity of the pressure chamber through the funnel, the injection cylinder is started to drive the injection rod to move leftwards, the injection rod moves leftwards to drive the injection piston to move leftwards, the injection piston moves leftwards to enable the molten metal to enter a cavity formed between the fixed mold and the movable mold and between the fixed mold and the mold core through the feeding pipe and the connecting groove, when the injection cylinder is started, the start drives the cooling liquid to circulate in the exhaust groove heat dissipation block to cool the exhaust groove heat dissipation block in advance, and when the molten metal flows into the exhaust groove through the overflow groove, the exhaust groove heat dissipation block can cool and solidify the molten metal in the exhaust groove in time, the molten metal is prevented from continuously overflowing out of the fixed die fixing plate, when the injection piston moves to the limit position leftwards, the molten metal completely enters the die, the injection piston keeps a certain pressure in the die, the solidified metal in the exhaust groove can ensure that the pressure does not leak, when the injection piston moves to the limit position, the injection rod drives the push rod to move leftwards to the limit position, the push rod moves leftwards to push the slide rod to move upwards, the slide rod moves upwards to drive the control slide block to move upwards, the control slide block moves upwards to enable the water inlet pipe to be communicated with the exhaust groove water pipe and the casting water pipe simultaneously, the water pump increases power, the cooling liquid can cool the casting heat dissipation block through the casting water pipe while cooling the exhaust groove heat dissipation block, and the casting heat dissipation block can absorb the heat of the molten metal in the fixed die through the heat conduction pad, the metal liquid in the fixed die is rapidly cooled into solid metal, the cooling efficiency is improved, if the fixed die is cooled at the beginning, the metal liquid entering in advance is easily rapidly cooled and solidified, subsequent metal liquid is blocked, and the die-casting failure is caused, the toggle mechanism drives the movable seat plate to move leftwards so that the die is opened, the ejector rod moves rightwards to push the die-casting block out of the movable die, and the die-casting operation is completed.

In a preferred embodiment, the cooling liquid after absorbing heat flows into the right cavity in the water tank through the water outlet pipe, the industrial fan is started to drive airflow to flow through the heat dissipation fins to take away the heat on the cooling liquid in the water tank, the liquid after the hot liquid lower layer in the right cavity of the partition plate is cooled flows into the water tank through the crack at the lower end of the partition plate and is pumped out by the water pump to continue cooling the fixed die, if the size of a die-cast workpiece is too large, the heat dissipation mechanism of the water tank cannot meet the heat dissipation requirement, and the water inlet pipe and the water outlet pipe can be externally connected with a cooling tower to perform heat dissipation and cooling.

The invention has the beneficial effects that: the cooling system of the cold chamber die casting machine provided by the invention can pre-cool the exhaust groove in the die, and the molten metal is cooled and solidified in time after flowing into the exhaust groove, so that the high-temperature molten metal is prevented from flowing out, and meanwhile, the auxiliary cooling effect is exerted on the periphery of the die.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

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

FIG. 2 is a schematic structural diagram at A-A in FIG. 1 according to an embodiment of the present invention;

FIG. 3 is an enlarged schematic view of the embodiment of the present invention at B in FIG. 1;

FIG. 4 is an enlarged schematic view of the embodiment of the present invention at C in FIG. 1;

FIG. 5 is a schematic structural diagram at D-D in FIG. 1 according to an embodiment of the present invention.

Detailed Description

The invention will now be described in detail with reference to fig. 1-5, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

Combine fig. 1-5 a cold chamber die casting machine cooling system, including base 10, from left to right fixed mounting has fixed bedplate 20, fixed plate 12 in proper order on base 10, fixed plate 12 with install die-casting mechanism 80 between the fixed bedplate 20, die-casting mechanism 80 can be with in the metal liquid punching press die feeding after the heating, fixed mounting has injection cylinder 13 on the fixed plate 12, fixed mounting has on the fixed bedplate 20 and presses room 19, injection cylinder 13 left end slidable mounting has and inserts press the injection pole 16 of pressing the room 19 inner chamber, 16 left end fixed mounting of injection pole have press the injection piston 17, the injection piston 17 can press the room 19 inner chamber to slide, press room 19 upper end fixed mounting to have funnel 18.

A fixed die fixing plate 21 is fixedly mounted at the left end of the fixed die fixing plate 20, a casting heat dissipation mechanism 70 is arranged in the fixed die fixing plate 21, a fixed die 29 is fixedly mounted at the left end of the fixed die fixing plate 21, four heat conduction pads 45 and casting heat dissipation blocks 44 which are uniformly distributed are fixedly mounted between the fixed die 29 and the fixed die fixing plate 21 from front to back in sequence, the heat conduction pads 45 can transfer heat on the fixed die 29 to the casting heat dissipation blocks 44, S-shaped water flow passages are processed in the casting heat dissipation blocks 44, so that cooling water can fully absorb heat in the casting heat dissipation blocks 44, three overflow grooves 37 which are uniformly distributed are processed on the left end surface of the fixed die 29, the overflow grooves 37 can be connected with an inner cavity of the fixed die 29, and an exhaust groove 38 which is communicated with the overflow grooves 37 is processed on the left end surfaces of the fixed die 29 and the fixed die fixing plate 21 together, and an exhaust groove radiating block 39 in contact with the exhaust groove 38 is fixedly mounted at the left end of the fixed die fixing plate 21.

Inlet tube 31, outlet pipe 36 are installed from left to right in proper order to cover half fixed plate 21 lower extreme, it has control chamber 42 to process in the cover half fixed plate 21, slidable mounting has control slider 43 in 42, process in the cover half fixed plate 21 have the head and the tail respectively with control chamber 42 the connection of outlet pipe 36 switch-on is three the air discharge duct water pipe 40 of air discharge duct radiating block 39, process in the cover half fixed plate 21 have the head and the tail respectively with control chamber 42 outlet pipe 36 connects and installs four the intercommunication the foundry goods water pipe 41 of foundry goods radiating block 44, inlet tube 31 can with control chamber 42 intercommunication.

Fixed base plate 20 left end fixed mounting has four pull rods 22 of symmetry from top to bottom, slidable mounting has movable base plate 25 on pull rod 22, movable base plate 25 lower extreme can along base 10 upper surface slides, the articulated elbow mechanism 26 of installing of movable base plate 25 left end, movable base plate 25 right-hand member fixed mounting has movable mould fixed plate 27, movable mould fixed plate 27 right-hand member fixed mounting has movable mould 24, fixed mounting has core 23 in the movable mould 24, movable mould fixed plate 27 with movable mould 24 right-hand member downside processes jointly has spread groove 46, fixed mounting has the intercommunication between the end about fixed base plate 21 spread groove 46 with the inlet pipe 30 of pressing the room 19 inner chamber, slidable mounting has hydraulic control in the movable base plate 25 run through movable base plate 25 movable mould fixed plate 27 the ejector pin 28 of core 23.

The heat dissipation control mechanism 60 is installed at the lower end of the fixed die fixing plate 21, the sliding rod 32 is installed at the lower end of the fixed die fixing plate 21 in a sliding mode, the upper end of the sliding rod 32 is fixedly connected with the control slider 43, the push rod 14 is fixedly installed on the injection rod 16, and the push rod 14 can push the sliding rod 32 to move upwards.

The water tank heat dissipation mechanism 50 is installed to base 10 upper end, base 10 upper end from left to right in proper order fixed mounting have water pump 33, water tank 34, industry fan 11.

34 inner chamber upper end fixed mounting of water tank has baffle 35, baffle 35 will two hydroeciums about the 34 inner chambers of water tank are cut apart into, and the left side inner chamber is the cold water room, and the right side inner chamber is the cooling chamber, the right side chamber upper end with 36 lower extremes of outlet pipe are connected, 34 left side chamber downside of water tank with connect between the water pump 33 and install the water pipe, the water pump 33 left end with the inlet tube 31 lower extreme is connected.

The front end and the rear end of the water tank 34 are fixedly provided with radiating fins 47, and the industrial fan 11 can drive air flow to take away heat on the radiating fins 47.

In one embodiment, the toggle mechanism 26 is actuated to push the movable seat plate 25 to move rightwards so that the movable mold fixed plate 27 is tightly attached to the fixed mold fixed plate 21, a sufficient amount of coolant is injected into the water tank 34, molten metal heated and melted is poured into the inner cavity of the pressure chamber 19 through the funnel 18, the injection cylinder 13 is actuated to drive the injection rod 16 to move leftwards, the injection rod 16 moves leftwards to drive the injection piston 17 to move leftwards, the injection piston 17 moves leftwards to introduce the molten metal into the cavity formed between the fixed mold 29 and the movable mold 24 and the core 23 through the feed pipe 30 and the connecting groove 46, when the injection cylinder 13 is actuated, the 3 actuation drives the coolant to circulate in the vent groove heat dissipation block 39 to cool the vent groove heat dissipation block 39 in advance, when the molten metal flows into the vent groove 38 after passing through the overflow groove 37, the exhaust groove heat dissipation block 39 can timely cool and solidify the molten metal in the exhaust groove 38, prevent the molten metal from continuously overflowing to the outside of the fixed die fixing plate 21, when the injection piston 17 moves to the left to the limit position, the molten metal completely enters the die, the injection piston 17 keeps a certain pressure, the molten metal in the die keeps a certain pressure, the solidified metal in the exhaust groove 38 can ensure that the pressure does not leak, when the injection piston 17 moves to the limit position, the injection rod 16 drives the push rod 14 to move to the left to the limit position, the push rod 14 moves to the left to push the slide rod 32 to move upwards, the slide rod 32 moves upwards to drive the control slider 43 to move upwards, the control slider 43 moves upwards to make the water inlet pipe 31 simultaneously connect the exhaust groove water pipe 40 and the casting water pipe 41, and the water pump 33 increases power, the cooling liquid cools down in the time of exhaust duct radiating block 39, can pass through foundry goods water pipe 41 cools down foundry goods radiating block 44, foundry goods radiating block 44 can pass through heat conduction pad 45 absorbs the heat of the interior metal liquid of cover half 29, the metal liquid quick cooling in the cover half 29 becomes solid metal, improves cooling efficiency, and is right at the beginning cover half 29 cools off, causes the metal liquid quick cooling solidification that gets into in advance easily, plugs up subsequent metal liquid, causes the failure of die-casting, toggle mechanism 26 drives movable seat board 25 removes left and makes the mould open, ejector pin 28 removes right and releases the die-casting piece the movable mould 24 accomplishes the die-casting operation.

In another embodiment, the cooling liquid after absorbing heat flows into the right cavity of the water tank 34 through the water outlet pipe 36, the industrial fan 11 is started to drive the air flow to flow through the heat dissipation fins 47 to take away the heat therefrom so as to cool the cooling liquid in the water tank 34, the liquid after cooling the hot liquid lower layer in the right cavity of the partition 35 flows into the water tank 34 through the gap at the lower end of the partition 35 and is pumped out by the water pump 33 to continue cooling the fixed mold 29, if the size of the die-cast workpiece is too large, the water tank heat dissipation mechanism 50 cannot meet the heat dissipation requirement, and the water inlet pipe 31 and the water outlet pipe 36 can be externally connected with a cooling tower for heat dissipation and cooling.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a cold chamber die casting machine cooling system, includes base (10), its characterized in that: base (10) are gone up from left to right fixed mounting in proper order and are decided bedplate (20), fixed plate (12) with it installs die-casting mechanism (80) to decide between bedplate (20), die-casting mechanism (80) can be with in the metal liquid stamping die-feed after the heating, fixed mounting has injection jar (13) on fixed plate (12), it goes up fixed mounting and has presses room (19) to decide bedplate (20), injection jar (13) left end slidable mounting has and inserts press injection pole (16) of pressing room (19) inner chamber, injection pole (16) left end fixed mounting have press injection piston (17), press injection piston (17) can press room (19) inner chamber to slide, press room (19) upper end fixed mounting to have funnel (18).

2. The cooling system of a cold chamber die casting machine of claim 1, wherein: the fixed die heat dissipation structure is characterized in that a fixed die fixing plate (21) is fixedly mounted at the left end of the fixed die plate (20), a casting heat dissipation mechanism (70) is arranged in the fixed die fixing plate (21), a fixed die (29) is fixedly mounted at the left end of the fixed die fixing plate (21), four heat conduction pads (45) and casting heat dissipation blocks (44) which are uniformly distributed are fixedly mounted between the fixed die (29) and the fixed die fixing plate (21) from front to back in sequence, the heat conduction pads (45) can transfer heat on the fixed die (29) to the casting heat dissipation blocks (44), S-shaped water circulation channels are processed inside the casting heat dissipation blocks (44), cooling water can fully absorb heat in the casting heat dissipation blocks (44), three overflow grooves (37) which are uniformly distributed are processed on the left end face of the fixed die (29), and the overflow grooves (37) can be connected with the inner cavity of the fixed die (29), an exhaust groove (38) communicated with the overflow groove (37) is machined on the left end faces of the fixed die (29) and the fixed die fixing plate (21), and an exhaust groove heat dissipation block (39) in contact with the exhaust groove (38) is fixedly installed at the left end of the fixed die fixing plate (21).

3. The cooling system of a cold chamber die casting machine of claim 2, wherein: inlet tube (31), outlet pipe (36) are installed from left to right in proper order to cover half fixed plate (21) lower extreme, processing has control chamber (42) in cover half fixed plate (21), slidable mounting has control slider (43) in (42), processing has the head and the tail respectively with control chamber (42) in cover half fixed plate (21) the connection of outlet pipe (36) switch-on is three exhaust duct water pipe (40) of exhaust duct radiating block (39), processing has the head and the tail respectively in cover half fixed plate (21) with control chamber (42) outlet pipe (36) are connected and are installed and communicate four the foundry goods water pipe (41) of foundry goods radiating block (44), inlet tube (31) can with control chamber (42) intercommunication.

4. The cooling system of a cold chamber die casting machine of claim 1, wherein: fixed seat board (20) left end fixed mounting has four pull rod (22) of symmetry from top to bottom, slidable mounting has movable bedplate (25) on pull rod (22), movable bedplate (25) lower extreme can along base (10) upper surface slides, movable bedplate (25) left end articulates installs toggle mechanism (26), movable bedplate (25) right-hand member fixed mounting has movable mould fixed plate (27), movable mould fixed plate (27) right-hand member fixed mounting has movable mould (24), fixed mounting has core (23) in movable mould (24), movable mould fixed plate (27) with movable mould (24) right-hand member downside coprocessing has spread groove (46), fixed mounting has the intercommunication between the end about fixed mould fixed plate (21) spread groove (46) with inlet pipe (30) of pressing room (19) inner chamber, slidable mounting has hydraulic control's running through in movable bedplate (25), The movable mold fixing plate (27) and an ejector rod (28) of the mold core (23).

5. The cooling system of claim 3, wherein: the heat dissipation control mechanism (60) is installed to cover half fixed plate (21) lower extreme, cover half fixed plate (21) lower extreme slidable mounting has slide bar (32), slide bar (32) upper end with control slider (43) fixed connection, fixed mounting has push rod (14) on injection pole (16), push rod (14) can promote slide bar (32) rebound.

6. The cooling system of a cold chamber die casting machine of claim 1, wherein: water tank heat dissipation mechanism (50) are installed to base (10) upper end, base (10) upper end from left to right in proper order fixed mounting have water pump (33), water tank (34), industry fan (11).

7. The cooling system of claim 6, wherein: water tank (34) inner chamber upper end fixed mounting has baffle (35), baffle (35) will two hydroeciums about water tank (34) inner chamber is cut apart into, and the left side inner chamber is the cold water room, and the right side inner chamber is the cooling chamber, the right side chamber upper end with outlet pipe (36) lower extreme is connected, water tank (34) left side chamber downside with connect between water pump (33) and install the water pipe, water pump (33) left end with inlet tube (31) lower extreme is connected.

8. The cooling system of claim 6, wherein: the heat dissipation device is characterized in that heat dissipation fins (47) are fixedly mounted at the front end and the rear end of the water tank (34), and the industrial fan (11) can drive air flow to take away heat on the heat dissipation fins (47).