Circulating cooling system for die-casting die

Abstract

The invention discloses a die-casting die circulating cooling system, and relates to the technical field of die cooling, the die-casting die circulating cooling system comprises a conveying belt, a lifting assembly is arranged at one end of the conveying belt, a clamping assembly is arranged above the lifting assembly, an air cooling treatment box is arranged at the middle section position of the conveying belt in a crossing manner, and a water cooling treatment box is arranged at the other end of the conveying belt in a crossing manner; a cooling liquid circulating box is arranged on one side of the water cooling treatment box, and a liquid spraying driving box is arranged at the top of the water cooling treatment box; a first position sensor and a second position sensor are arranged on the conveying belt. According to the circulating cooling system for the die-casting die, the clamping assembly is arranged to fix the die-casting die, and the situation that the cooling effect is affected due to movement of the die-casting die in the cooling process is avoided; the two cooling procedures of air cooling and water cooling are arranged, the cooling time is shortened, the cooling efficiency is improved, air cooling is conducted firstly, then water cooling is conducted, and the situation that the die-casting die is damaged due to the fact that water cooling is conducted directly, and the temperature difference is too large is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of mold cooling, and particularly relates to a die-casting mold circulating cooling system. Background Art

[0002] Die casting is an important means of metal forming, generally carried out through a die-casting mold; during the die-casting forming process, under the influence of molten metal, the mold will generate a large amount of heat. If the heat cannot be discharged in time, it will have a certain impact on the use of the mold, and indirectly also affect the quality of die-cast products, thus wasting resources.

[0003] Most of the existing die-casting molds are naturally cooled, with a long cooling time, which reduces the production efficiency of castings, and the incomplete cooling of die-casting molds affects the quality of castings. Summary of the Invention

[0004] The purpose of the present invention is to provide a die-casting mold circulating cooling system to solve the problem that most of the existing die-casting molds are naturally cooled, with a long cooling time, which reduces the production efficiency of castings.

[0005] To achieve the above purpose, the present invention provides a die-casting mold circulating cooling system, including a conveyor belt. One end of the conveyor belt is provided with a lifting component, above which a clamping component is arranged. A crosswise air-cooling treatment box is arranged at the middle section position of the conveyor belt, and a crosswise water-cooling treatment box is arranged at the other end of the conveyor belt. A coolant circulation box is arranged on one side of the water-cooling treatment box, and a liquid spraying drive box is arranged on the top of the water-cooling treatment box; A first position sensor and a second position sensor are arranged on the conveyor belt. The second position sensor is arranged below the water-cooling treatment box, and the first position sensor is arranged below the air-cooling treatment box.

[0006] Preferably, the lifting component includes a bottom plate arranged on the conveyor belt. A plurality of lifting cylinders are arranged on the bottom plate, and the output ends of the plurality of lifting cylinders are connected to a workbench, which is arranged in a stepped structure.

[0007] Preferably, the clamping component includes a clamping frame arranged on the top of the workbench and two special-shaped parts. The two special-shaped parts are respectively hinged to both sides of the clamping frame. A slideway is opened above the clamping frame, and two sliding blocks are symmetrically arranged on the slideway. The two sliding blocks are respectively hinged to the two special-shaped parts.

[0008] Preferably, a circular groove is formed in the slideway, a connecting plate is arranged in the circular groove, a connecting rod is arranged below the connecting plate, a sliding sleeve is sleeved on the connecting rod, two connecting blocks are symmetrically arranged on the sliding sleeve, the two connecting blocks are respectively hinged to the two special-shaped parts, a clamping cylinder is arranged below the connecting block, and two ends of the clamping cylinder are respectively hinged to the two special-shaped parts.

[0009] Preferably, air-cooling machines are arranged on both side walls of the air-cooling treatment box, the air outlets of the air-cooling machines are arranged obliquely, and the air outlets form an included angle of 30°-45° with the upper wall of the air-cooling treatment box; A ventilation opening is formed in the top of the air-cooling treatment box, and a filter screen is arranged on the ventilation opening.

[0010] Preferably, a water collecting plate is arranged in the water-cooling treatment box, a water collecting box is arranged in the water collecting plate, a plurality of through holes are formed in the top of the water collecting box, the through holes are communicated with water collecting holes, the water collecting holes are uniformly arranged on the upper part of the water collecting plate, the other end of the water collecting box is hermetically connected with one end of a drain pipe, and the other end of the drain pipe penetrates through the inner wall cavity of the water-cooling treatment box and is communicated in the coolant circulation box; A rectangular groove is formed in the middle position of the water collecting plate.

[0011] Preferably, a telescopic cylinder is arranged inside the liquid spraying driving box, a fixed sleeve is connected to the telescopic rod of the telescopic cylinder, the fixed sleeve is penetrated by a portal frame, two ends of the portal frame extend into the water-cooling treatment box and are connected with an annular liquid spraying pipe, and a plurality of spray heads are connected to the annular liquid spraying pipe; Both sides of the portal frame are sleeved on auxiliary rods, and the auxiliary rods are fixedly arranged inside the liquid spraying driving box.

[0012] Preferably, a water inlet is formed at the end of the annular liquid spraying pipe, the water inlet is connected with one end of a water inlet pipe, the water inlet pipe is hung on the inner side wall of the water-cooling treatment box through a hanging rope, and the other end of the water inlet pipe penetrates through the water-cooling treatment box and is connected in the coolant circulation box; The water inlet pipe is a metal braided hose.

[0013] Preferably, a water replenishing pipe is arranged on the top of the coolant circulation box, a circulating water pump is arranged inside the coolant circulation box, one end of the circulating water pump is connected with the water inlet pipe, and the other end is connected with the drain pipe; A plurality of semiconductor refrigeration plates are arranged around the outer wall surface of the coolant circulation box.

[0014] Preferably, the lifting cylinder, the clamping cylinder, the air-cooling machine, the telescopic cylinder, the circulating water pump, the conveyor belt, the first position sensor and the second position sensor are all electrically connected to the PLC controller and controlled by the PLC controller.

[0015] Therefore, the present invention adopts the above-mentioned die-casting mold circulating cooling system. By setting the clamping assembly to fix the die-casting mold, it avoids the movement of the die-casting mold during the cooling process and affects the cooling effect. By setting two cooling processes of air-cooling and water-cooling, it reduces the cooling time and improves the cooling efficiency. First, air-cooling is carried out and then water-cooling is carried out to avoid directly carrying out water-cooling, which may cause the die-casting mold to be damaged due to excessive temperature difference.

[0016] Next, through the drawings and embodiments, the technical solutions of the present invention will be further described in detail. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of an embodiment of a die-casting mold circulating cooling system of the present invention; Figure 2 It is a schematic structural diagram of the clamping assembly of a die-casting mold circulating cooling system of the present invention; Figure 3 It is a cross-sectional view of the clamping assembly of a die-casting mold circulating cooling system of the present invention; Figure 4 It is a cross-sectional view of the water-cooling treatment box of a die-casting mold circulating cooling system of the present invention; Figure 5 It is a partial structural schematic diagram of the water-cooling treatment box of a die-casting mold circulating cooling system of the present invention; Figure 6 It is a schematic structural diagram of the annular liquid spraying pipe of a die-casting mold circulating cooling system of the present invention; Reference Signs: 1, conveyor belt; 2, lifting assembly; 21, bottom plate; 22, lifting cylinder; 23, workbench; 3, clamping assembly; 31, clamping frame; 32, special-shaped part; 33, slideway; 34, sliding block; 35, connecting plate; 36, connecting rod; 37, sliding sleeve; 38, connecting block; 39, clamping cylinder; 4, air-cooling treatment box; 41, air-cooling machine; 42, ventilation opening; 5, water-cooling treatment box; 51, water collecting plate; 52, water collecting box; 53, water collecting hole; 54, drain pipe; 55, temperature sensor; 6, coolant circulation box; 61, water replenishing pipe; 62, semiconductor refrigeration plate; 7, liquid spraying drive box; 71, telescopic cylinder; 72, fixed sleeve; 73, gantry; 74, annular liquid spraying pipe; 741, water inlet; 75, spray head; 76, auxiliary rod; 77, water inlet pipe; 78, hanging rope; 8, first position sensor; 9, second position sensor; 10, die-casting mold. Detailed Embodiments

[0018] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Unless otherwise defined, the technical terms or scientific terms used in the present invention should have the ordinary meanings understood by those of ordinary skill in the field to which the present invention belongs. The "first", "second" and similar terms used in the present invention do not denote any order, quantity or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left", "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0020] Embodiment Please refer to Figures 1-6 , the present invention provides a die-casting mold circulating cooling system, including a conveyor belt 1, a lifting assembly 2 is arranged at one end of the conveyor belt 1, a clamping assembly 3 is arranged above the lifting assembly 2, an air-cooling treatment box 4 is arranged across the middle position of the conveyor belt 1, a water-cooling treatment box 5 is arranged across the other end of the conveyor belt 1, a coolant circulation tank 6 is arranged on one side of the water-cooling treatment box 5, and a liquid spraying drive box 7 is arranged on the top of the water-cooling treatment box 5.

[0021] A first position sensor 8 and a second position sensor 9 are provided on the conveyor belt 1. The second position sensor 9 is arranged below the water-cooling treatment tank 5, and the first position sensor 8 is arranged below the air-cooling treatment tank 4. When the bottom plate 21 of the lifting assembly 2 is conveyed by the conveyor belt 1 to the position where the first position sensor 8 is located, the first position sensor 8 transmits a signal to the PLC controller. While the PLC controller controls the driving member of the conveyor belt 1 to stop driving, it starts the lifting cylinder 22 to drive the workbench 23 to move upward to a specified position, and then starts the air-cooling machines 41 on both sides to air-cool the die-casting mold. When the bottom plate 21 of the lifting assembly 2 is conveyed by the conveyor belt 1 to the position where the second position sensor 9 is located, when the second position sensor 9 transmits a signal to the PLC controller, the PLC controller controls the driving member of the conveyor belt 1 to stop driving and at the same time starts the lifting cylinder 22 to drive the workbench 23 to move upward until the upper part of the workbench 23 is clamped into the rectangular groove, and the lifting cylinder 22 stops lifting. The PLC controller controls the circulating water pump to start, supplies coolant to the annular liquid spraying pipe 74 through the water inlet pipe 77, and sprays it through the nozzles 75 to water-cool the die-casting mold 10. Then it starts the telescopic cylinder 71 to make reciprocating up and down movements, so that the coolant is sprayed more evenly onto the die-casting mold 10.

[0022] The lifting assembly 2 includes a bottom plate 21 arranged on the conveyor belt 1. A plurality of lifting cylinders 22 are arranged on the bottom plate 21. The lifting cylinders 22 in this embodiment are electric cylinders. The output ends of the plurality of lifting cylinders 22 are connected to the workbench 23. The workbench 23 is arranged in a stepped structure, and the upper structure of the workbench 23 is adapted to the rectangular groove. This design avoids a large amount of coolant flowing down, affecting the use of the lifting cylinder 22 or the conveyor belt 1.

[0023] The clamping assembly 3 includes a clamping frame 31 arranged on the top of the workbench 23 and two special-shaped parts 32. The special-shaped parts 32 are arranged in a bow shape. The two special-shaped parts 32 are respectively hinged to both sides of the clamping frame 31. A slideway 33 is provided above the clamping frame 31. Two sliding blocks 34 are symmetrically arranged on the slideway 33. The two sliding blocks 34 are respectively hinged to the two special-shaped parts 32. As Figure 2 shown, the lower parts of the slideway 33 and the sliding blocks 34 in this embodiment are both trapezoidal structures, avoiding the situation that the sliding blocks 34 come out of the slideway 33 when they are clamped, resulting in clamping failure.

[0024] A circular groove is formed in the slideway 33. A connecting plate 35 is arranged in the circular groove. A connecting rod 36 is arranged below the connecting plate 35. A sliding sleeve 37 is sleeved on the connecting rod 36. Two connecting blocks 38 are symmetrically arranged on the sliding sleeve 37. The two connecting blocks 38 are respectively hinged to the two special-shaped parts 32. A clamping cylinder 39 is arranged below the connecting block. The clamping cylinder 39 in this embodiment is a hydraulic cylinder. The two ends of the clamping cylinder 39 are respectively hinged to the two special-shaped parts 32. When the clamping cylinder 39 is controlled by the PLC controller to start, the clamping cylinder 39 continuously extends, driving the two special-shaped parts 32 on both sides to rotate outward around the hinge connection points connected to the clamping frame 31, so that the two sliding blocks 34 on the upper part of the clamping frame 31 move inward to clamp the die-casting mold. During this process, the sliding sleeve 37 slides downward along the connecting rod 36, and its two connecting blocks 38 are connected to the two special-shaped parts 32 on both sides, ensuring that the two special-shaped parts 32 on both sides are synchronized, so that the two sliding blocks 34 clamp the die-casting mold synchronously.

[0025] Air-cooling machines 41 are arranged on both side walls of the air-cooling treatment box 4. The air outlets of the air-cooling machines 41 are inclined, and the air outlets form an angle of 30° - 45° with the upper wall of the air-cooling treatment box 4. A ventilation opening 42 is formed at the top of the air-cooling treatment box 4, and a filter screen is arranged on the ventilation opening 42. When the air outlets of the air-cooling machines form an angle of 30° - 45° with the upper wall of the treatment box, the air flow directions blown out at the same time have both upward and horizontal components, and the ventilation opening 42 is installed at the top. Such a design is conducive to guiding the heated air upward. By means of the principle that hot air naturally rises, the hot air is more likely to gather in the upper area of the treatment box, which is conducive to discharging the hot air from the air-cooling treatment box 4.

[0026] A water-collecting plate 51 is arranged in the water-cooling treatment box 5. A water-collecting box 52 is arranged in the water-collecting plate 51. A plurality of through holes are formed at the top of the water-collecting box 52, and the through holes are communicated with water-collecting holes 53. The water-collecting holes 53 are uniformly arranged on the upper part of the water-collecting plate 51. The other end of the water-collecting box 52 is hermetically connected to one end of a drain pipe 54. The other end of the drain pipe 54 passes through the inner wall cavity of the water-cooling treatment box 5 and is communicated with a coolant circulation box 6. The coolant flowing down by spraying will flow into the water-collecting box 52 through the water-collecting holes 53 and enter the coolant circulation box 6 through the drain pipe 54. A rectangular groove is formed at the middle position of the water-collecting plate 51, and the rectangular groove is matched with the workbench 23 for positioning.

[0027] A temperature sensor 55 is also arranged on the inner wall of the water-cooling treatment box 5, which is used to detect the temperature in the water-cooling treatment box 5 and transmit the signal to the PLC controller. When the temperature reaches the cooling target temperature value, the PLC controller controls the circulating water pump to stop pumping and drives the lifting assembly 2 to descend, and conveys the die-casting mold to the end of the conveyor belt 1 through the conveyor belt 1 to complete the cooling.

[0028] Inside the liquid spraying drive box 7, a telescopic cylinder 71 is provided. A fixed sleeve 72 is connected to the telescopic rod of the telescopic cylinder 71. The fixed sleeve 72 is penetrated by a gantry 73. The two ends of the gantry 73 extend into the water-cooling treatment box 5 and are connected to an annular liquid spraying pipe 74. A plurality of nozzles 75 are connected to the annular liquid spraying pipe 74. Both sides of the gantry 73 are sleeved on the auxiliary rod 76, and the auxiliary rod 76 is fixedly arranged inside the liquid spraying drive box 7.

[0029] The annular liquid spraying pipes 74 are symmetrically arranged, and can spray the cooling liquid on the die-casting mold within the largest range. An inlet 741 is opened at the end of the annular liquid spraying pipe 74. The inlet 741 is connected to one end of a water inlet pipe 77. The water inlet pipe 77 is hung on the inner box wall of the water-cooling treatment box 5 through a hanging rope 78. The other end of the water inlet pipe 77 passes through the water-cooling treatment box 5 and is connected to the coolant circulation box 6. The water inlet pipe 77 is a metal braided hose. The metal braided hose can still maintain its shape when swinging and is not easily bent, ensuring the supply of the cooling liquid.

[0030] A water replenishing pipe 61 is arranged at the top of the coolant circulation box 6. A circulation water pump is arranged inside the coolant circulation box 6. One end of the circulation water pump is connected to the water inlet pipe, and the other end is connected to a drain pipe. A plurality of semiconductor refrigeration plates 62 are arranged around the outer wall surface of the coolant circulation box 6. The temperature of the coolant in the coolant circulation box 6 is controlled by the semiconductor refrigeration plates 62 to prevent the temperature of the circulated coolant from being too high and affecting the cooling effect. In addition to using the semiconductor refrigeration plates 62, a compressor refrigerating machine can also be installed inside the coolant circulation box 6 to adjust the temperature of the coolant.

[0031] The lifting cylinder 22, the clamping cylinder 39, the air-cooling machine 41, the telescopic cylinder 71, the circulation water pump, the conveyor belt 1, the temperature sensor 55, the first position sensor 8 and the second position sensor 9 are all electrically connected to the PLC controller, and the PLC controller controls the shutdown, startup and working parameters.

[0032] During specific use, after die casting is completed, the clamping assembly 3 clamps the die-casting mold 10, and it is conveyed by the conveyor belt 1. When the die-casting mold 10 is conveyed into the air-cooling treatment box 4 and detected by the first position sensor 8, the first position sensor 8 transmits a signal to the PLC controller. The PLC controller controls the lifting assembly 2 to lift to a certain height, and then starts the air-cooling machines 41 on both sides to perform air-cooling on the die-casting mold 10. After a period of time, the PLC controller controls the lifting assembly 2 to drop to the original height and starts the conveyor belt 1 to convey the die-casting mold 10 into the water-cooling treatment box 5, where it is detected by the second position sensor 9. The second position sensor 9 transmits a signal to the PLC controller. After the PLC controller controls the lifting assembly 2 to lift to the specified position, it controls the circulating water pump to start, supplies coolant to the annular liquid spraying pipe 74, and at the same time starts the telescopic cylinder 71 to move reciprocally. The coolant is sprayed through the nozzles 75 to perform water-cooling on the die-casting mold. After a period of time, when the temperature detected by the temperature sensor 55 reaches the cooling target temperature value, the PLC controller controls the circulating water pump to stop pumping coolant, drives the lifting assembly 2 to descend to the original height, conveys the die-casting mold to the end of the conveyor belt 1 through the conveyor belt 1, and releases the clamping of the clamping assembly 3 to complete the cooling.

[0033] Therefore, the present invention adopts the above-mentioned die-casting mold circulating cooling system. By setting the clamping assembly to fix the die-casting mold, it avoids the movement of the die-casting mold during the cooling process, which affects the cooling effect. By setting two cooling processes of air-cooling and water-cooling, the cooling time is reduced and the cooling efficiency is improved. First, air-cooling is carried out and then water-cooling is carried out to avoid directly performing water-cooling, which may cause the die-casting mold to be damaged due to too large a temperature difference.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that they can still modify or equivalently replace the technical solutions of the present invention, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A die-casting mold circulating cooling system, characterized in that: It comprises a conveyor belt, a lifting assembly is arranged at one end of the conveyor belt, a clamping assembly is arranged above the lifting assembly, an air cooling treatment box is arranged across the middle section of the conveyor belt, a water cooling treatment box is arranged across the other end of the conveyor belt, a coolant circulation box is arranged on one side of the water cooling treatment box, and a liquid spray driving box is arranged on the top of the water cooling treatment box; The conveyor belt is provided with a first position sensor and a second position sensor, wherein the second position sensor is provided below the water-cooling treatment box, and the first position sensor is provided below the air-cooling treatment box.

2. A die-casting mold circulating cooling system according to claim 1, characterized in that: The lifting assembly comprises a bottom plate arranged on the conveyor belt, a plurality of lifting cylinders are arranged on the bottom plate, the output ends of the plurality of lifting cylinders are connected to a workbench, and the workbench is arranged in a stepped structure.

3. A die-casting mold circulating cooling system according to claim 2, characterized in that: The clamping assembly includes a clamping frame and two special-shaped parts arranged on the top of the workbench. The two special-shaped parts are respectively hingedly connected to the two sides of the clamping frame. A slideway is opened above the clamping frame. Two sliding blocks are symmetrically arranged on the slideway. The two sliding blocks are respectively hingedly connected to the two special-shaped parts.

4. A die-casting mold circulating cooling system according to claim 3, characterized in that: A circular groove is provided on the slideway, a connecting plate is provided in the circular groove, a connecting rod is provided below the connecting plate, a sliding sleeve is sleeved on the connecting rod, two connecting blocks are symmetrically provided on the sliding sleeve, the two connecting blocks are respectively hingedly connected to the two special-shaped parts, a clamping cylinder is provided below the connecting block, and both ends of the clamping cylinder are respectively hingedly connected to the two special-shaped parts.

5. A die-casting mold circulating cooling system according to claim 4, characterized in that: Air coolers are arranged on both sides of the air cooling treatment box, the air outlet of the air cooler is arranged at an angle, and the air outlet is arranged at an angle of 30° to 45° with the upper wall of the air cooling treatment box; A vent is provided on the top of the air cooling treatment box, and a filter is provided on the vent.

6. A die-casting mold circulating cooling system according to claim 5, characterized in that: A water collecting plate is provided in the water cooling treatment box, a water collecting box is provided in the water collecting plate, a plurality of through holes are provided on the top of the water collecting box, the through holes are connected with the water collecting holes, the water collecting holes are evenly arranged on the upper part of the water collecting plate, the other end of the water collecting box is sealedly connected with one end of the drain pipe, and the other end of the drain pipe passes through the inner wall cavity of the water cooling treatment box and is connected to the coolant circulation box; A rectangular groove is provided at the middle position of the water collecting plate.

7. A die-casting mold circulating cooling system according to claim 6, characterized in that: A telescopic cylinder is arranged inside the liquid spray drive box, a fixed sleeve is connected to the telescopic rod of the telescopic cylinder, the fixed sleeve is passed through by a portal frame, both ends of the portal frame extend into the water cooling treatment box and are connected to an annular liquid spray pipe, and a plurality of nozzles are connected to the annular liquid spray pipe; Both sides of the door frame are sleeved on auxiliary rods, and the auxiliary rods are fixedly arranged in the liquid spraying driving box.

8. A die-casting mold circulating cooling system according to claim 7, characterized in that: The end of the annular liquid spraying pipe is provided with a water inlet, the water inlet is connected to one end of a water inlet pipe, the water inlet pipe is hung on the inner wall of the water cooling treatment box through a hanging rope, and the other end of the water inlet pipe passes through the water cooling treatment box and is connected to the coolant circulation box; The water inlet pipe is a metal braided hose.

9. A die-casting mold circulating cooling system according to claim 8, characterized in that: A water supply pipe is arranged on the top of the coolant circulation box, and a circulating water pump is arranged inside the coolant circulation box, one end of the circulating water pump is connected to the water inlet pipe, and the other end is connected to the drain pipe; A plurality of semiconductor refrigeration plates are arranged around the outer wall surface of the cooling liquid circulation box.

10. A die-casting mold circulating cooling system according to claim 9, characterized in that: The lifting cylinder, the clamping cylinder, the air cooler, the telescopic cylinder, the circulating water pump, the conveyor belt, the first position sensor and the second position sensor are all electrically connected to the PLC controller and controlled by the PLC controller.

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