A die-casting cooling device for automotive parts

Abstract

The present invention relates to the technical field of die-casting production and processing, and specifically to a die-casting cooling device for automotive parts, comprising a chain conveyor and a cooling fan arranged above the chain conveyor, a cooling box being arranged at the bottom of the chain conveyor, a bracket connected to the chain conveyor being fixedly arranged on the cooling box, coolant being arranged in the cooling box, the chain conveyor being triangular as a whole and the bottom immersed in the cooling box, and further comprising: an air box being arranged in the chain conveyor and located at the bottom of the conveying part, a fan being arranged at the bottom of the air box, the fan being connected to the air box; a fixed block and a movable block, so that the die-casting cooling device for automotive parts, the cooling fan above forms convection with the air outlet on the conveying plate, thereby enhancing the cooling effect, and at the same time the design of the fixed cylinder utilizes the low-temperature airflow around the chain conveyor, provides the fan with air of lower temperature, and further improves the cooling efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of die casting production and processing, in particular to a die casting cooling device for automobile parts. Background Art

[0002] In the field of automotive parts manufacturing, die-casting technology is widely used to efficiently produce key components such as gearbox housings. The temperature of newly-baked die-cast parts is relatively high, and natural cooling not only takes a long time, but may also affect the efficiency of subsequent processing processes. Therefore, factories generally adopt forced cooling measures to accelerate the cooling process.

[0003] For die-castings made of certain special materials, due to their high melting point and significant thermal expansion characteristics, water cooling may cause rapid temperature changes and induce internal thermal stress, which in turn causes deformation or cracking. Therefore, air cooling becomes a more suitable option. Air cooling dissipates heat through natural convection of air, and its gentle heat transfer method helps maintain the geometric and dimensional accuracy of die-castings.

[0004] Currently, mainstream air cooling systems typically utilize a chain conveyor coupled with a fan, placed above the conveyor to promote air flow and achieve cooling. However, this type of system has inherent drawbacks: the workpiece's bottom surface is in close contact with the conveyor's metal plate, significantly restricting air circulation underneath. This results in poor cooling and a significant temperature difference between the upper and lower surfaces, impacting overall cooling quality. Furthermore, due to its excellent thermal conductivity, the metal conveyor plate continuously absorbs heat released by the die-casting during long-term load and transport of high-temperature die-castings. This heat is rapidly conducted and accumulated within the metal conveyor plate, causing the overall conveyor plate temperature to gradually increase. As operating time increases, the increasing conveyor plate temperature further narrows the temperature difference between the conveyor plate and the die-casting, reducing heat transfer efficiency. Especially during continuous production operations, the metal conveyor plate is unable to effectively dissipate the absorbed heat, causing heat accumulation and further exacerbating heat exchange barriers during the die-casting cooling process. Therefore, we propose a die-casting cooling device for automotive parts. Summary of the Invention

[0005] To solve the above technical problems, the present application provides a die-casting cooling device for automotive parts, comprising a chain conveyor and a cooling fan arranged above the chain conveyor. A cooling box is provided at the bottom of the chain conveyor, a bracket connected to the chain conveyor is fixedly provided on the cooling box, and coolant is provided in the cooling box. The chain conveyor is triangular in shape as a whole and its bottom is immersed in the cooling box. The chain conveyor includes chains on both sides and multiple conveyor plates arranged between the chains, and further includes:

[0006] An air box is provided in the chain conveyor and is located at the bottom of the conveying part. A fan is provided at the bottom of the air box and is connected to the air box.

[0007] A fixed block and a movable block, the fixed block is fixedly set on the conveying plate, the movable block is slidably set on the conveying plate, the upper surface of the air box is stepped, when the conveying plate drives the movable block to move, the bottom of the movable block contacts the upper surface of the air box and moves up and down, cooperating with the fixed block to realize alternating support of the die-casting.

[0008] In some embodiments, the chain conveyor includes a conveying section, a descending section, and an ascending section. The bottom connection between the descending section and the ascending section is immersed in a cooling box, and the fan is arranged at the ascending section.

[0009] In some embodiments, the fixing block is a hollow structure with a closed top and an open bottom, and a plurality of through holes are opened on the outside of the fixing block, and the plurality of through holes are arranged in a circular array on the outside of the fixing block.

[0010] In some embodiments, the movable block is slidably arranged on the conveying plate, a connecting ring is fixedly arranged on the bottom of the movable block, a slot for placing the connecting ring is opened at the bottom of the conveying plate, the movable block is a hollow structure with a closed top and an open bottom, a reset spring is arranged on the connecting ring, a limiting block is arranged on the outer side of the top of the movable block, and a plurality of air outlet holes are also opened on the movable block.

[0011] In some embodiments, the air outlet is located on a side of the movable block facing the conveying direction of the chain conveyor, and the through hole and the air outlet are both arranged to be inclined upward.

[0012] In some embodiments, a plurality of grooves are provided on the upper surface of the air box, and the plurality of grooves are all located on the moving route of the movable block, and inclined surfaces are provided on both sides of the grooves.

[0013] In some embodiments, a plurality of connecting holes are provided on the air box, and the plurality of connecting holes are arranged along the conveying direction of the fixed block and the movable block, and the connecting holes arranged along the fixed block track and the connecting holes arranged along the movable block track are staggered on the air box, and connecting parts are provided in the connecting holes. When the fixed block and the movable block contact the connecting parts, the connecting parts open the connecting holes to connect them with the fixed block and the movable block.

[0014] In some embodiments, the connecting member includes a fixing ring fixedly arranged on the inner wall of the connecting hole, a blocking block is slidably arranged in the fixing ring, vertical rods sliding through the fixing ring are fixedly connected on both sides of the blocking block, the top of the vertical rod is provided with a slope, a horizontal plate is fixedly arranged in the connecting hole, a V-shaped spring plate is provided on the horizontal plate, and the top of the V-shaped spring plate abuts the bottom of the blocking block.

[0015] In some embodiments, the suction side of the fan is connected to a fixed cylinder, which is set on a bracket. The ascending section of the chain conveyor moves through the fixed cylinder. An air duct is opened in the fixed cylinder, and the air duct is connected to the suction side of the fan. The top opening of the fixed cylinder is larger than its bottom opening.

[0016] In some embodiments, a brush for wiping off residual coolant on the conveying plate is fixedly provided on the bracket, and the brush is located in the ascending section of the chain conveyor.

[0017] The present invention has at least the following beneficial effects:

[0018] 1. Improve cooling efficiency: The cooling box and heat exchange circulation equipment installed at the bottom of the chain conveyor effectively reduce the temperature of the conveyor plate, thereby improving the heat transfer efficiency between the die castings and the conveyor plate and accelerating the cooling process of the die castings;

[0019] 2. Ensure cooling uniformity: The fixed blocks and movable blocks set on the conveying plate, and their cooperation with the air box, realize alternating support and all-round cooling of the bottom of the die casting, avoid local temperature differences and improve cooling quality;

[0020] 3. Optimize airflow utilization: The cooling fan above forms convection with the air outlet holes on the conveyor plate, which enhances the cooling effect. At the same time, the design of the fixed cylinder utilizes the low-temperature airflow around the chain conveyor, providing the fan with lower temperature air, further improving the cooling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a side structural schematic diagram of the present invention;

[0023] Figure 3 It is a schematic diagram of the partial structure of the chain conveyor of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the conveying plate of the present invention;

[0025] Figure 5 It is a schematic diagram of a partial cross-sectional structure of a conveying plate of the present invention;

[0026] Figure 6 This is a schematic diagram of the movable block structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the air box structure of the present invention;

[0028] Figure 8 This is a schematic diagram of the cross-sectional structure of the air box of the present invention;

[0029] Figure 9 For the present invention Figure 8 A in the middle is an enlarged structural diagram;

[0030] Figure 10 This is a schematic diagram of the fixed cylinder structure of the present invention;

[0031] Figure 11 It is a structural schematic diagram of the ascending section of the chain conveyor of the present invention.

[0032] In the figure: 1-chain conveyor; 101-conveyor section; 102-descendant section; 103-ascendant section; 2-cooling fan; 3-cooling box; 4-conveyor plate; 5-air box; 6-fan; 7-fixed block; 8-movable block; 9-connecting piece; 91-fixed ring; 92-blocking block; 93-vertical rod; 94-horizontal plate; 95-V-shaped spring clip; 10-through hole; 11-connecting ring; 12-reset spring clip; 13-limiting block; 14-air outlet; 15-groove; 16-connecting hole; 17-fixed cylinder; 18-air duct; 19-brush. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] Example 1: Please refer to Figures 1-10The present invention provides a technical solution: a die-casting cooling device for automotive parts, comprising a chain conveyor 1 and a cooling fan 2 arranged above the chain conveyor 1. When the chain conveyor 1 drives the die-casting to move, the cooling fan 2 above will cool the die-casting. Since the chain conveyor 1 is made of metal, its heat conductivity is relatively strong. During long-term operation, it absorbs heat from the die-casting, resulting in a high heat content. Therefore, a cooling box 3 is provided at the bottom of the chain conveyor 1. A bracket connected to the chain conveyor 1 is fixedly provided on the cooling box 3. Coolant is provided in the cooling box 3. The chain conveyor 1 is triangular in shape as a whole. And the bottom is immersed in the cooling box 3, so that a section of the chain conveyor 1 is immersed in the coolant, which can be cooled. The cooling box 3 is connected to the existing heat exchange circulation equipment to ensure the temperature of the coolant. It should be noted that in order to avoid the situation where the temperature difference between the chain conveyor 1 and the die-casting is too high, resulting in defects in the die-casting, the heat exchange circulation equipment needs to be equipped with a temperature control system to make the temperature of the chain conveyor 1 after being immersed in the coolant suitable to avoid the temperature difference between the chain conveyor 1 and the die-casting being too high. The chain conveyor 1 includes chains on both sides and multiple conveying plates 4 arranged between the chains. The multiple conveying plates 4 move along the chain direction to realize the conveyance of the die-casting.

[0035] The chain conveyor 1 includes a conveying section 101, a descending section 102 and an ascending section 103. The bottom connection between the descending section 102 and the ascending section 103 is immersed in the cooling box 3. The fan 6 is arranged at the ascending section 103. An air box 5 is arranged below the bottom of the conveying section 101. The fan 6 is connected to the air box 5, and air is transported to the air box 5 through the fan 6.

[0036] A fixed block 7 and a movable block 8 are provided on the conveying plate 4. The fixed block 7 is fixedly connected to the conveying plate 4, and the movable block 8 is slidably set on the conveying plate 4. The upper surface of the air box 5 is stepped. When the conveying plate 4 drives the movable block 8 to move, the bottom of the movable block 8 contacts the upper surface of the air box 5 and moves up and down, cooperating with the fixed block 7 to realize alternating support of the die-casting.

[0037] The fixed block 7 is a hollow structure with a closed top and an open bottom, and a plurality of through holes 10 are provided on the outside of the fixed block 7. The plurality of through holes 10 are arranged in a circular array on the outside of the fixed block 7. When the fixed block 7 is connected to the air box 5, the gas in the air box 5 is ejected through the through holes 10 on the fixed block 7 to cool the bottom of the die-cast part.

[0038] A plurality of grooves 15 are formed on the upper surface of the air box 5 . The plurality of grooves 15 are all located on the moving path of the movable block 8 , and both sides of the grooves 15 are provided with inclined surfaces.

[0039] The movable block 8 is slidably arranged on the conveying plate 4, and a connecting ring 11 is fixedly arranged at the bottom of the movable block 8. A notch for placing the connecting ring 11 is provided at the bottom of the conveying plate 4. The movable block 8 is a hollow structure with a closed top and an open bottom. A reset spring 12 is provided on the connecting ring 11, and a limit block 13 is provided on the outer side of the top of the movable block 8. A plurality of air outlet holes 14 are also provided on the movable block 8. When the conveying plate 4 moves, the movable block 8 is driven to move. When the movable block 8 passes the surface of the air box 5, its bottom is squeezed and drives the connecting ring 11 to move upward. The connecting ring 11 squeezes the reset spring 12 and drives the movable block 8 to move upward at the same time. At this time, the top of the movable block 8 It abuts against the top of the die-casting to support it, and at the same time the fixed block 7 no longer supports the die-casting. At this time, the air in the air box 5 is ejected through the air outlet 14 on the movable block 8 to cool the bottom of the die-casting, and also cools the places that the through hole 10 cannot reach. The two cooperate with each other to achieve comprehensive cooling of the bottom of the die-casting to avoid local temperature differences. When the conveying plate 4 drives the movable block 8 to continue to move into the groove 15, the reset spring 12 drives the movable block 8 to reset, and the die-casting is supported by the fixed block 7 again. In this way, alternating support and all-round cooling of the bottom of the die-casting are achieved.

[0040] The air outlet 14 is located on the side of the movable block 8 toward the conveying direction of the chain conveyor 1. During cooling, the air flow blown out by the cooling fan 2 above can convect with the air flow blown out of the air outlet 14, and the through hole 10 and the air outlet 14 are both arranged to be inclined upward, so that the air flow can be blown toward the bottom surface of the die-casting.

[0041] A plurality of connecting holes 16 are provided on the air box 5, and the plurality of connecting holes 16 are arranged along the conveying direction of the fixed block 7 and the movable block 8, and the connecting holes 16 arranged along the track of the fixed block 7 and the connecting holes 16 arranged along the track of the movable block 8 are staggered on the air box 5, and a connecting member 9 is provided in the connecting hole 16. When the fixed block 7 and the movable block 8 contact the connecting member 9, the connecting member 9 opens the connecting hole 16 to connect it with the fixed block 7 and the movable block 8.

[0042] The connecting member 9 includes a fixing ring 91 fixedly arranged on the inner wall of the connecting hole 16, a blocking block 92 is slidably arranged in the fixing ring 91, and vertical rods 93 sliding through the fixing ring 91 are fixedly connected on both sides of the blocking block 92. The top of the vertical rod 93 is provided with an inclined surface, and a horizontal plate 94 is fixedly arranged in the connecting hole 16. A V-shaped spring piece 95 is provided on the horizontal plate 94, and the top of the V-shaped spring piece 95 abuts the bottom of the blocking block 92.

[0043] When the chain conveyor 1 is running, the conveying plate 4 drives the fixed block 7 and the movable block 8 to move. When the fixed block 7 and the movable block 8 pass above the connecting hole 16, the bottom of the fixed block 7 and the movable block 8 will abut the vertical rod 93 to move it downward. The vertical rod 93 drives the blocking block 92 to move downward so that the blocking block 92 is staggered with the fixed ring 91, thereby realizing the conduction of the connecting hole 16, and allowing the air in the air box 5 to be ejected from the fixed block 7 or the movable block 8 through the connecting hole 16.

[0044] The suction side of the fan 6 is connected to a fixed cylinder 17, which is set on the bracket. The rising section 103 of the chain conveyor 1 moves through the fixed cylinder 17. An air duct 18 is opened in the fixed cylinder 17, and the air duct 18 is connected to the suction side of the fan 6. The top opening of the fixed cylinder 17 is larger than its bottom opening. When the fan 6 is started, the fan 6 will inhale the air flow and then blow it out. If the temperature of the inhaled air flow is low, the temperature of the blown air flow is also low. Therefore, the suction side of the fan 6 is set at the rising section 103. This is because the chain conveyor 1 is When cooled by the coolant, its own temperature will drop and the surrounding temperature will also drop. At the same time, coolant will remain on the conveying plate 4 of the chain conveyor 1. The air flow is driven by the fan 6, and the air duct 18 of the fixed cylinder 17 is arranged on both sides of its interior. The coolant remaining on the conveying plate 4 can be separated from the conveying plate 4 by the air flow, and then no coolant will remain on the surface of the conveying plate 4, avoiding the coolant directly contacting the die-casting, causing it to cool down quickly and produce defects. At the same time, it can also provide air with a lower temperature for the fan 6.

[0045] The working principle of the present invention is that the die casting is driven by the chain conveyor 1, while the cooling fan 2 above provides preliminary cooling for the die casting. The chain conveyor 1 is designed as a triangle, with the bottom immersed in the cooling box 3. The conveyor plate 4 is maintained at an appropriate temperature by coolant and heat exchange circulation equipment. The conveyor plate 4 is provided with fixed blocks 7 and movable blocks 8. They cooperate with the air box 5 to achieve alternating support and all-round cooling of the bottom of the die casting. When the conveyor plate 4 drives the fixed blocks 7 and movable blocks 8 to move, they will contact the connector 9 in the connection hole 16 of the air box 5, causing the air in the air box 5 to be ejected through the through hole 10 and the air outlet 14 on the fixed block 7 or the movable block 8, cooling the bottom of the die casting. At the same time, the fan 6 at the rising section 103 of the chain conveyor 1 draws in the low-temperature airflow cooled by the surrounding coolant and blows it out through the air duct 18, forming convection with the cooling fan 2 above, enhancing the cooling effect. The entire cooling process is both efficient and uniform, ensuring the cooling quality of the die casting.

[0046] Example 2: Please refer to Figure 11, Example 2 has the same main structure as Example 1, except that a brush 19 for wiping off the residual coolant on the conveying plate 4 is fixedly provided on the bracket. The brush 19 is located in the ascending section 103 of the chain conveyor 1. The setting of the brush 19 can effectively wipe off the residual coolant water stains on the conveying plate 4, preventing these residues from contaminating the die-casting or affecting the cooling effect during the subsequent conveying process. At the same time, the brush 19 can also brush off the dust remaining on the surface of the die-casting, ensuring the cleanliness of the surface of the die-casting, which is beneficial to subsequent processing and quality inspection.

[0047] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0048] While the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions, and alterations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A die-cast cooling device for automobile parts, comprising a chain conveyor (1) and a cooling fan (2) arranged above the chain conveyor (1), characterized in that: A cooling box (3) is provided at the bottom of the chain conveyor (1), a bracket connected to the chain conveyor (1) is fixedly provided on the cooling box (3), and a cooling liquid is provided in the cooling box (3). The chain conveyor (1) is triangular in shape as a whole and its bottom is immersed in the cooling box (3). The chain conveyor (1) includes chains on both sides and a plurality of conveying plates (4) arranged between the chains, and further includes: An air box (5) is arranged in the chain conveyor (1) and is located at the bottom of the conveying part. A fan (6) is provided at the bottom of the air box (5), and the fan (6) is connected to the air box (5); A fixed block (7) and a movable block (8), wherein the fixed block (7) is fixedly arranged on the conveying plate (4), and the movable block (8) is slidably arranged on the conveying plate (4); the upper surface of the air box (5) is stepped; when the conveying plate (4) drives the movable block (8) to move, the bottom of the movable block (8) contacts the upper surface of the air box (5) and moves up and down, thereby cooperating with the fixed block (7) to realize alternating support of the die casting; The chain conveyor (1) comprises a conveying section (101), a descending section (102), and an ascending section (103); the bottom connection between the descending section (102) and the ascending section (103) is immersed in a cooling box (3); and the fan (6) is arranged at the ascending section (103); The fixed block (7) is a hollow structure with a closed top and an open bottom, and a plurality of through holes (10) are provided on the outside of the fixed block (7), and the plurality of through holes (10) are arranged in a circular array on the outside of the fixed block (7); The movable block (8) is slidably arranged on the conveying plate (4), a connecting ring (11) is fixedly arranged on the bottom of the movable block (8), a slot for the connecting ring (11) to be placed is provided on the bottom of the conveying plate (4), the movable block (8) is a hollow structure with a closed top and an open bottom, a reset spring (12) is provided on the connecting ring (11), a limiting block (13) is provided on the outer side of the top of the movable block (8), and a plurality of air outlet holes (14) are also provided on the movable block (8); The air outlet (14) is located on the side of the movable block (8) facing the conveying direction of the chain conveyor (1), and the through hole (10) and the air outlet (14) are both arranged to be inclined upward; The air box (5) is provided with a plurality of connecting holes (16), and the plurality of connecting holes (16) are arranged along the conveying direction of the fixed block (7) and the movable block (8), and the connecting holes (16) arranged along the track of the fixed block (7) and the connecting holes (16) arranged along the track of the movable block (8) are staggered on the air box (5), and a connecting member (9) is arranged in the connecting hole (16). When the fixed block (7) and the movable block (8) contact the connecting member (9), the connecting member (9) opens the connecting hole (16) to communicate with the fixed block (7) and the movable block (8).

2. The die casting cooling device for automobile parts according to claim 1, characterized in that: The upper surface of the air box (5) is provided with a plurality of grooves (15), the plurality of grooves (15) are all located on the moving route of the movable block (8), and inclined surfaces are provided on both sides of the grooves (15).

3. The die casting cooling device for automobile parts according to claim 1, characterized in that: The connecting member (9) includes a fixing ring (91) fixedly arranged on the inner wall of the connecting hole (16), a blocking block (92) slidably arranged in the fixing ring (91), vertical rods (93) slidably passing through the fixing ring (91) are fixedly connected to both sides of the blocking block (92), and the top of the vertical rod (93) is provided with an inclined surface, and a horizontal plate (94) is fixedly arranged in the connecting hole (16), and a V-shaped spring piece (95) is provided on the horizontal plate (94), and the top of the V-shaped spring piece (95) abuts against the bottom of the blocking block (92).

4. The die casting cooling device for automobile parts according to claim 1, characterized in that: The suction side of the fan (6) is connected to a fixed cylinder (17), the fixed cylinder (17) is arranged on a bracket, the ascending section (103) of the chain conveyor (1) movably passes through the fixed cylinder (17), an air duct (18) is opened in the fixed cylinder (17), the air duct (18) is communicated with the suction side of the fan (6), and the top opening of the fixed cylinder (17) is larger than the bottom opening thereof.

5. The die casting cooling device for automobile parts according to claim 1, characterized in that: A brush (19) for wiping off residual coolant on the conveying plate (4) is fixedly provided on the bracket, and the brush (19) is located at the ascending section (103) of the chain conveyor (1).

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