A die casting machine die casting mold spraying cooling device

Abstract

The application discloses a die-casting machine die-casting die spraying cooling device applied to the technical field of die-casting dies, and the traditional spray head is often blocked and cannot spray water, and uneven spraying leads to product deformation and cold separation, which occurs from time to time, after improvement, the water outlet hole and the atomizing hole are increased in diameter, the spray head is uniformly sprayed and is not prone to blockage, product quality is stable and problems are not prone to occur, in addition, after improvement, the number of spray heads, pipeline distribution and maintenance are clear and convenient, and the improved spray head is directly opened by compressed air of the atomizing hole, paint and gas are sprayed out at the same time, after improvement, only one valve is needed in each spraying area, the spray heads are independently divided, isolation control is not needed, after improvement, only 10 pipelines are needed for each spraying machine, construction and maintenance are facilitated, and compared with the original traditional spraying process, the cycle time of each die is 70-75s, the cycle time is saved by 25s, and the efficiency is high.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of die casting molds, in particular to a die casting mold spraying and cooling device of a die casting machine. BACKGROUND

[0002] In the die casting production process, the spraying process, the selection of the nozzle shape, signal online, logic control, the whole production process, capacity efficiency and product quality have a decisive factor, which is directly related to the problems of product cold separation undercasting, deformation and injury.

[0003] At present, the nozzle used in part of the workshop contains a control gas hole, the compressed gas controls the opening of the piston in the nozzle, realizes the spraying of the coating, and each single spraying area needs a control gas valve and a gas pipe, and the spraying valve plate also needs to be controlled separately, which is complicated and increases the construction amount, and each spraying machine needs 26 pipes of different sizes, which is very inconvenient for maintenance.

[0004] Therefore, the applicant supposes that the control gas hole is cancelled by improving the nozzle, the compressed air of the atomizing hole directly pushes open the piston in the nozzle, realizes the spraying of the coating and the gas at the same time, after the improvement, only one valve is needed for each spraying area, and the nozzles are independently divided, and separate control is not needed, which is convenient for construction and maintenance. SUMMARY

[0005] The application aims to solve the problem that the compressed gas controls the opening of the piston in the nozzle, realizes the spraying of the coating, each single spraying area needs a control gas valve and a gas pipe, and the spraying valve plate also needs to be controlled separately, which is complicated and increases the construction amount, compared with the prior art, a die casting mold spraying and cooling device of a die casting machine is provided, which comprises movable and fixed mold plates, a plurality of nozzle bodies installed on one side of the movable and fixed mold plates, two upper and lower cavities vertically and communicatively arranged in the nozzle body, a sealing assembly movably blocking between the upper and lower cavities, a plurality of atomizing holes arranged on the outer side of the lower cavity bottom, and a water outlet hole communicating between the atomizing hole and the lower cavity.

[0006] After improvement, the number of spray heads, pipeline distribution, clear and easy to maintain, time is greatly shortened, and the improved spray head is directly opened by compressed air of the atomizing hole, realizing the simultaneous spraying of paint and gas, and only one valve is needed for each spraying area after improvement, and the spray heads are independently divided without isolation control.

[0007] Optionally, the water outlet hole diameter is set to 4mm, and the atomizing hole diameter is set to 3mm.

[0008] Optionally, a pressure receiving air bag is placed above the piston, and the pressure receiving air bag is annular, and the first rod body passes through the middle part of the pressure receiving air bag.

[0009] Optionally, the spray head body is provided with a movable plugging assembly for plugging the water outlet hole, and the movable plugging assembly comprises a plugging block and a pneumatic disc, the plugging block is in sliding connection with the spray head body, and the pneumatic disc is located above the plugging block.

[0010] Optionally, a driving groove is formed in the pneumatic disc, and a pneumatic rod is rotatably connected in the middle part of the driving groove, a driving port is formed in the driving groove, and the driving port is communicated with the pressure receiving air bag through a hose.

[0011] Optionally, a second rod body is movably penetrated through the top of the plugging block, and the second rod body penetrates through the pneumatic disc at the top and is fixed with the pneumatic rod.

[0012] Optionally, the first rod body and the second rod body are both hexagonal, and the plugging block is made of rubber material.

[0013] Optionally, a torsional spring is arranged in the middle part of the trigger disc, and the torsional spring is sleeved outside the trigger rod.

[0014] Optionally, the spray head body is signal connected with a control cabinet, and the control cabinet is signal connected with the die casting machine, and the control cabinet is electrically connected with an intermediate relay and a time relay.

[0015] Optionally, a second guide groove is formed in the outside of the plugging block, a second guide rod is slidably connected in the second guide groove, and the end of the second guide rod away from the second guide groove is fixed with the inner wall of the spray head body.

[0016] Compared with the prior art, the advantages of the present application are:

[0017] (1) The traditional nozzle is often blocked and does not spray water, which leads to uneven spraying and product deformation. After improvement, the nozzle spraying is uniform and not easy to block by increasing the water outlet hole and atomizing hole diameter. The product quality is stable and not prone to problems. In addition, after improvement, the number of nozzles and pipeline distribution are clear and easy to maintain, and the time is greatly shortened. The improved nozzle directly opens the piston in the nozzle with compressed air from the atomizing hole, which realizes the simultaneous spraying of paint and gas. After improvement, only one valve is needed for each spraying area, and the nozzles are independently divided without isolation control. After improvement, each spraying machine only needs 10 pipelines, which is convenient for construction and maintenance. Through the above improvement, compared with the original traditional spraying process, the cycle time of each mold is 70-75s; the cycle time is saved by 25s, and the efficiency is high.

[0018] (2) The present design selects a large-diameter nozzle, the water outlet hole is expanded to 4mm, and the atomizing hole is 3mm to strengthen the atomizing effect and prevent the nozzle from being blocked. In addition, the traditional nozzle has a small water outlet hole, which does not reach the total water outlet amount, and needs to stack nozzles. The dynamic and static mold combination needs 70-90 nozzles. After improvement, the diameter is increased and the water outlet amount is increased. The dynamic and static mold combination only needs 30 nozzles, which is convenient and simple to control.

[0019] (3) The improved nozzle directly opens the piston in the nozzle with compressed air from the atomizing hole, which realizes the simultaneous spraying of paint and gas. After improvement, only one valve is needed for each spraying area, and the nozzles are independently divided without isolation control. After improvement, each spraying machine only needs 10 pipelines, which is convenient for construction and maintenance.

[0020] (4) After improvement, the water outlet amount of the nozzle is increased, so the spraying time is greatly reduced, and a lot of time is saved in the spraying process.

[0021] (5) The nozzle is connected with the signal of the die casting machine through the control cabinet. When the die casting machine is opened to the position, the signal is controlled, assisted by intermediate relays, time relays, and combined logic. After the opening to position signal is connected, the key high temperature area of the flow divider cone and the sprue bushing is sprayed separately, completely eliminating the spraying machine step, and the cycle time of each mold can be reduced by 4-8s. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic view of the three-dimensional structure of the present application;

[0023] Figure 2 is a schematic view of the cross-sectional structure of the nozzle body of the present application;

[0024] Figure 3 is a schematic view of the Figure 2 A enlarged structure diagram of the present application;

[0025] Figure 4Figure 1 is a schematic diagram of the piston up-moving motion structure of the present application;

[0026] Figure 5 Figure 2 is a schematic diagram of the trigger disc explosion structure of the present application;

[0027] Figure 6 Figure 3 is a schematic diagram of the trigger disc profile top view structure of the present application;

[0028] Figure 7 Figure 4 is a schematic diagram of the trigger rod motion structure of the present application;

[0029] Figure 8 Figure 5 is a schematic diagram of the piston solid structure of the present application;

[0030] Figure 9 Figure 6 is a schematic diagram of the pneumatic rod top view structure of the present application;

[0031] Figure 10 Figure 7 is a schematic diagram of the pneumatic rod motion structure of the present application.

[0032] Figure 8 is a legend of the figures;

[0033] 1, stationary die plate; 2, nozzle body; 3, atomizing hole; 4, water outlet hole; 5, trigger disc; 6, piston; 7, upper opening; 8, lower opening; 9, trigger rod; 10, first rod body; 11, first guide rod; 12, first guide slot; 13, pressure receiving air bag; 14, blocking block; 15, pneumatic disc; 16, pneumatic rod; 17, driving port; 18, second rod body. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0035] Embodiment 1

[0036] The present application discloses a die casting machine die casting mold spraying cooling device, please refer to Figures 1-8, including a dynamic template 1, a plurality of installation in dynamic template 1 one side of the nozzle body 2, the nozzle body 2 inside vertically provided with two upper cavity and lower cavity, and the upper cavity and lower cavity between the movable plug has a sealing assembly, the lower cavity bottom outside is provided with a plurality of atomizing holes 3, and the atomizing hole 3 and the lower cavity are communicated through the water outlet hole 4; the sealing assembly includes a trigger disc 5 and a piston 6 below the trigger disc 5, the trigger disc 5 is fixed in the upper cavity, the trigger disc 5 top and bottom are provided with upper opening 7 and lower opening 8 respectively, and the upper opening 7 and the lower opening 8 are staggered, the trigger disc 5 is rotatably connected with the trigger rod 9, and the trigger rod 9 is below the upper opening 7 for pushing the trigger rod 9 to rotate by compressed gas; the piston 6 top is movably penetrated by the first rod body 10, and the first rod body 10 top penetrates the trigger disc 5 and is fixed with the trigger rod 9, the upper cavity inner wall is provided with a sliding slot for accommodating the piston 6 sliding, and the sliding slot inner wall is fixed with the first guide rod 11 symmetrically, the piston 6 outside is provided with a first guide groove 12 matched with the first guide rod 11, the water outlet hole 4 is 4mm in diameter, the atomizing hole 3 is 3mm in diameter, the trigger disc 5 is provided with a torsional spring, and the torsional spring is sleeved outside the trigger rod 9, the nozzle body 2 is signal connected with the control cabinet, and the control cabinet is signal connected with the die casting machine, and the control cabinet is electrically connected with the intermediate relay and the time relay.

[0037] Among them, the traditional nozzle is more complicated in control mode, and the water outlet hole 4 is smaller, most of which is controlled in 0.4-0.7mm, and the atomizing hole 3 is in 0.4-0.5mm, although the required atomization effect is achieved, but in the die casting coating, there are silicon oil, paraffin, synthetic ester, which is easy to form block and adhere to the pipeline, and fall off under the repeated impact of spraying pressure, which is easy to block the nozzle, resulting in uneven spraying, affecting the quality of die casting, the present design selects the large diameter nozzle, the water outlet hole 4 is expanded to 4mm, the atomizing hole 3 is expanded to 3mm, and the length of the aperture is shortened to 10mm, so as to reduce the loss and strengthen the atomization effect, which is verified by production practice, and the nozzle blocking situation almost does not occur, in addition, the traditional nozzle, because the water outlet hole 4 is too small, the total water outlet is not reached, the nozzle needs to be stacked, the dynamic and static mold combination needs 70-90 nozzles, after improvement, the diameter is increased, the water outlet is increased, the dynamic and static mold combination only needs 30 nozzles, which is convenient and simple, and easy to control;

[0038] In addition, when in use, the gas and paint can enter the trigger disc 5 from the upper cavity, and then the trigger rod 9 can rotate to a preset angle under the pushing of the gas pressure, so as to expose the lower opening 8, so that the gas and paint can enter the upper cavity, and when the trigger rod 9 rotates, the first rod body 10 can synchronously drive the piston 6 to rotate, and when the piston 6 rotates, the first guide groove 12 on the outer side is extruded by the first guide rod 11, so that the piston 6 is pushed upward to be opened, and then the gas flows into the lower cavity. It should be noted that the first rod body 10 movably penetrates the top of the piston 6, so that the first rod body 10 does not interfere with the movement of the piston 6 when the piston 6 rises. In addition, the improved spray head cancels the gas control hole, and the compressed air of the atomizing hole 3 directly pushes open the piston 6 in the spray head, so that the paint and the gas are sprayed at the same time. After the improvement, only one valve is needed for each spraying area, and the spray heads are independently separated, so that the isolation control is not needed. After the improvement, only 10 pipelines are needed for each spraying machine, which is convenient for construction and maintenance.

[0039] In addition, in the production process of the stepped die casting mold, the high-temperature area is mainly concentrated in the fixed mold gate sleeve and the fan-shaped area with a radius of 300 mm diverging to the four directions, the dynamic mold flow cone, camber and corner, and these areas can reach 300-350 DEG C after the part is taken out, which is the focus of spraying. Since the water output of the improved spray head is increased, the spraying time is greatly reduced. The spraying time of the tooth tip part is 1.5-2.5 s, and now it is 0.1-0.5 s. The original spraying time of the tread is 2.5-4 s, and now it is 1-1.5 s. The original spraying time of the camber is 2.5-4 s, and now it is 1-1.5 s. The original spraying time of the flow cone gate sleeve is 4-8 s, and now it does not need to be sprayed. The original running speed is 0.5-1 m / s, and now it is all changed to 1.5-1.8 m / s. The running time is shortened by 60%-70%, and the running speed is increased by 50%-60%. A large amount of time is saved in the spraying process.

[0040] Finally, in the production process of the stepped die casting mold, because the molten aluminum alloy liquid 600 DEG C-700 DEG C first flows into the flow cone and the gate sleeve, and has the longest contact time with the metal liquid, the temperature of the flow cone and the gate sleeve is always the highest, which can reach 400 DEG C. In the traditional process, the flow cone and the gate sleeve are cooled by relying on the spraying machine, and the cooling water hole is increased. The spraying time is generally 4-8 s, which wastes time and reduces production efficiency. Now, the improved spray head is used. The die casting machine is opened to the position, the signal control is assisted by the intermediate relay, the time relay and the combined logic. After the opening to the position signal is connected, the key high-temperature area of the flow cone and the gate sleeve is sprayed separately, and the spraying machine step is completely omitted. The cycle time of each mold can be reduced by 4-8 s.

[0041] Embodiment 2

[0042] Compared with embodiment 1, the movable plugging assembly is added in embodiment 2 of the application, which effectively avoids that the dust in the outside world blocks the water outlet hole 4. Please refer toFigures 2-4 And Figures 9-10 , the piston 6 is placed above the pressure bag 13, and the pressure bag 13 is annular, the first rod body 10 passes through the middle of the pressure bag 13, the movable plugging assembly for plugging the water outlet hole 4 is installed in the nozzle body 2, the movable plugging assembly comprises a plugging block 14 and a pneumatic disc 15, the plugging block 14 is in sliding connection with the nozzle body 2, the pneumatic disc 15 is located above the plugging block 14, a driving groove is formed in the pneumatic disc 15, a pneumatic rod 16 is rotatably connected in the middle of the driving groove, a driving port 17 is formed in the driving groove, and the driving port 17 is communicated with the pressure bag 13 through a hose, a second rod body 18 is movably penetrated through the top of the plugging block 14, and the second rod body 18 is penetrated through the pneumatic disc 15 and fixed with the pneumatic rod 16 at the top, the first rod body 10 and the second rod body 18 are hexagonal, the plugging block 14 is made of rubber material, a second guide groove is formed in the outer side of the plugging block 14, a second guide rod is slidably connected in the second guide groove, and the end of the second guide rod away from the second guide groove is fixed with the inner wall of the nozzle body 2, it should be noted that the first guide rod 11, the first guide groove 12 and the second guide rod and the second guide groove are the same structure.

[0043] When the piston 6 rises, the pressure bag 13 is squeezed, the gas in the pressure bag 13 enters the driving groove through the hose, and the gas pressure increases to drive the pneumatic rod 16 to rotate, and the pneumatic rod 16 drives the plugging block 14 to rotate synchronously through the fixed second rod body 18, the plugging block 14 moves upward under the action of the second guide groove and the second guide rod, so as to open the water outlet hole 4, and the water outlet hole 4 is well sealed, effectively avoiding the penetration of dust or impurities in the outside to cause the plugging problem.

[0044] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the improvement concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A die casting machine die casting mold spray cooling device, comprising a movable and fixed mold plate (1), a plurality of spray head bodies (2) installed on one side of the movable and fixed mold plate (1), characterized in that, The upper cavity and the lower cavity are vertically and mutually communicated in the nozzle body (2), and the sealing assembly is movably blocked between the upper cavity and the lower cavity; a plurality of atomizing holes (3) are formed on the outside of the bottom of the lower cavity, and the atomizing holes (3) are communicated with the lower cavity through water outlet holes (4); The sealing assembly comprises a trigger disc (5) and a piston (6) below the trigger disc (5); the trigger disc (5) is fixed in the upper cavity; upper and lower openings (7, 8) are respectively formed on the top and bottom of the trigger disc (5), and the upper and lower openings (7, 8) are staggered; a trigger rod (9) is rotatably connected to the middle of the trigger disc (5), and the trigger rod (9) is below the upper opening (7) for being pushed to rotate by compressed gas. The top of the piston (6) is movably penetrated by a first rod body (10), and the top of the first rod body (10) penetrates the trigger disc (5) and is fixed with the trigger rod (9); a sliding groove for accommodating the sliding of the piston (6) is formed on the inner wall of the upper cavity, and first guide rods (11) are symmetrically fixed on the inner wall of the sliding groove; a first guide groove (12) matched with the first guide rods (11) is formed on the outside of the piston (6). A pressure receiving air bag (13) is placed above the piston (6), and the pressure receiving air bag (13) is annular; the first rod body (10) penetrates the middle of the pressure receiving air bag (13); a movable plugging assembly for plugging the water outlet holes (4) is installed in the nozzle body (2); the movable plugging assembly comprises a plugging block (14) and a pneumatic disc (15); the plugging block (14) is slidably connected with the nozzle body (2); the pneumatic disc (15) is above the plugging block (14); a driving groove is formed in the pneumatic disc (15), and a pneumatic rod (16) is rotatably connected to the middle of the driving groove; a driving port (17) is formed in the driving groove, and the driving port (17) is communicated with the pressure receiving air bag (13) through a hose; a second rod body (18) is movably penetrated through the top of the plugging block (14), and the top of the second rod body (18) penetrates the pneumatic disc (15) and is fixed with the pneumatic rod (16).

2. The die casting die spraying cooling device of claim 1, wherein, The diameter of the water outlet hole (4) is 4 mm, and the diameter of the atomizing hole (3) is 3 mm.

3. The die casting die spraying cooling device of claim 1, wherein, The first rod body (10) and the second rod body (18) are both hexagonal, and the plugging block (14) is made of rubber material.

4. The die casting die spraying cooling device of claim 1, wherein, A torsional spring is arranged in the middle of the trigger disc (5), and the torsional spring is sleeved on the outside of the trigger rod (9).

5. The die casting die spraying cooling device of claim 4, wherein, The nozzle body (2) is signal connected with a control cabinet, and the control cabinet is signal connected with a die casting machine; the control cabinet is electrically connected with an intermediate relay and a time relay.

6. The die casting die spraying cooling device of claim 1, wherein, A second guide groove is formed on the outside of the plugging block (14), and a second guide rod is slidably connected in the second guide groove, and the end of the second guide rod away from the second guide groove is fixed with the inner wall of the nozzle body (2).

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