Low-pressure casting mold for aluminum alloy automobile chassis casting

Abstract

The invention relates to the technical field of automobile molds, and discloses an aluminum alloy automobile chassis casting low-pressure casting mold which comprises an upper pressing mold. Rotating the mold; a die sleeve; the switching module is used for automatically switching the rotating dies; the auxiliary module is used for carrying out die casting on the chassis part on the rotating die; and the upper pressing die is pressed by the hydraulic part to drive the switching module to carry out automatic rotation switching on the rotating die. According to the low-pressure casting mold for the aluminum alloy automobile chassis castings, the multiple molds can be driven by single pressure to act through the arranged rotating mold, so that rotating alternate type pressure casting is achieved, and forming, secondary corner cutting or secondary forming, automatic discharging and final automatic lubricating and cooling are achieved in the whole pressure casting process; according to the aluminum alloy chassis die-casting forming device, the die-casting forming is achieved on one rotating die in a unified mode, the problem of multiple procedures during chassis forming in a traditional technology is solved, the labor intensity of operators during aluminum alloy chassis machining is reduced, the automation degree is high, and the aluminum alloy chassis die-casting forming efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile molds, in particular to a low-pressure casting mold for an aluminum alloy automobile chassis casting. Background Art

[0002] The automobile chassis consists of four parts: transmission system, running system, steering system and braking system. The function of the chassis is to support and install the automobile engine and its components and assemblies to form the overall shape of the car, and to receive the power of the engine to make the car move and ensure normal driving.

[0003] At present, during the die-casting process of automobile chassis, it may need multiple die-castings, and multiple die-castings require multiple sets of molds to be operated in multiple processes. In addition, during the die-casting, there are still pressed edges on the corners, which require operators to manually knock them off or grind them away, wasting working hours and reducing the die-casting efficiency of the product. At the same time, during the die-casting, there will be a certain degree of die jamming. The traditional method is to rely on the operator to apply lubricating fluid to the mold from time to time to ensure smooth demolding of the mold. However, manual operation will increase the labor intensity of the operator, and at the same time, the mold cannot be effectively cared for in time, resulting in the risk of die jamming when the product is demolded. Therefore, a low-pressure casting mold for aluminum alloy automobile chassis castings is proposed to solve the above-mentioned problems. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a low-pressure casting mold for an aluminum alloy automobile chassis casting, which solves the problems in the prior art of processing an aluminum alloy chassis with multiple steps, which requires multiple material transfers to multiple molds and multiple processing, resulting in low processing efficiency, and the traditional mold requires operators to apply lubricating oil when demolding, which increases labor intensity and causes unstable demolding.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a low-pressure casting mold for aluminum alloy automobile chassis castings, comprising an upper pressure mold; a rotary mold; a mold sleeve; a switching module for automatically switching the rotary mold; an auxiliary module for die-casting the chassis parts on the rotary mold; the upper pressure mold is pressed down by a hydraulic component, driving the switching module to automatically rotate and switch the rotary mold.

[0006] Preferably, the rotary mold is provided with a lower mold 1, a lower mold 2 and a lower mold 3, and the lower mold 1, the lower mold 2 and the lower mold 3 are distributed in a circular array with the center of the rotary mold.

[0007] Preferably, the mold sleeve is connected to a pressure mold 1 and a mold box, the pressure mold 1 corresponds to the lower mold 2, and the mold box corresponds to the lower mold 3.

[0008] Preferably, a material drop port is provided below the mold sleeve, a sponge sheet is provided in the mold box, two oil pots are connected to the mold box, and a material receiving box is provided below the mold sleeve.

[0009] Preferably, the switching module includes a side mold frame, the side mold frame is connected to a connecting plate, the connecting plate is connected to a power column through a driving device, the power column is connected to the rotating mold, the power column is rotatably connected to a connecting frame, and the connecting frame is connected to the mold sleeve.

[0010] Preferably, the driving device includes a support, the support is connected to a guide rod, one end of the guide rod is slidably connected to a connecting frame, the support is connected to a sliding shaft rod, the sliding shaft rod is slidably connected in a sliding groove opened in a connecting plate, the support is rotatably connected to a rotating rod, the bottom of the rotating rod is slidably connected in a spiral groove opened in a power column through a sliding pin, one side of the support is connected to a first spring, and the other end of the first spring is connected to one side of the rotating rod.

[0011] Preferably, a guide groove is provided on the side mold frame, and a pressure rod is slidably connected inside the guide groove, and the pressure rod is connected to the side surface of the first pressure mold.

[0012] Preferably, the auxiliary module includes a rotating wheel, which is connected to a power column, a pressure plate abutting the bottom of the rotating wheel, a rack connected to the bottom of the pressure plate, a gear meshing on the rack, a rocker arm connected to both ends of the gear through an axle, and a striker rod connected to the bottom of the rocker arm.

[0013] Preferably, the swing arm is connected to a compression spring, one end of the compression spring is connected to a connection box, and the connection box is fixed on a connection frame.

[0014] Preferably, a driving wheel is connected to the power column, the driving wheel is connected to two transmission wheels through a toothed belt, and the transmission wheel is connected to the mold sleeve through a wheel frame.

[0015] Compared with the prior art, the present invention provides a low-pressure casting mold for aluminum alloy automobile chassis castings, which has the following beneficial effects: 1. The low-pressure casting mold for aluminum alloy automobile chassis casting can use a single pressure to drive multiple molds to move through the set rotary mold, so as to realize rotary alternating die casting. The entire die casting is formed, secondary corner cutting or secondary molding, automatic discharge and final automatic lubrication and cooling are uniformly realized on a rotary mold, which not only solves the multi-process of chassis molding in traditional technology, but also reduces the labor intensity of operators during the processing of aluminum alloy chassis. The overall degree of automation is high, thereby improving the die-casting efficiency of aluminum alloy chassis.

[0016] 2. The low-pressure casting mold for the aluminum alloy automobile chassis casting can provide a certain elastic impact on the rotating mold through the auxiliary module, so that the formed aluminum alloy chassis is looser, so that the rotating mold can automatically fall off when rotating, without the need for manual peeling or removal by the operator, thereby improving the smoothness of the product demolding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a low-pressure casting mold for an aluminum alloy automobile chassis casting proposed by the present invention; Figure 2 This is a schematic structural diagram of a rotary die in a low-pressure casting die for an aluminum alloy automobile chassis casting proposed by the present invention; Figure 3 This is a schematic diagram of the connection structure of a die sleeve in a low-pressure casting die for an aluminum alloy automobile chassis casting proposed by the present invention; Figure 4 This is a structural schematic diagram of a switching module in a low-pressure casting mold for an aluminum alloy automobile chassis casting proposed by the present invention; Figure 5 This is a schematic diagram of the structure of a driving device in a low-pressure casting mold for an aluminum alloy automobile chassis casting proposed by the present invention; Figure 6 This is a schematic structural diagram of an auxiliary module in a low-pressure casting mold for an aluminum alloy automobile chassis casting proposed by the present invention; Figure 7 The present invention provides a schematic diagram of the connection structure of a driving wheel in a low-pressure casting mold for an aluminum alloy automobile chassis casting.

[0018] In the figure: 1. upper die; 2. rotating die; 21. lower die one; 22. lower die two; 23. lower die three; 3. die sleeve; 31. die one; 32. die box; 33. oil pot; 34. sponge sheet; 35. drop opening; 4. switching module; 41. power column; 42. side die frame; 43. connecting plate; 44. sliding groove; 45. connecting frame; 46. driving device; 461. support; 462. sliding shaft rod; 463. guide rod; 464. rotating rod; 465. first spring; 47. spiral groove; 48. pressure rod; 49. guide groove; 5. auxiliary module; 51. rotating wheel; 52. rack; 53. pressure plate; 54. gear; 55. swing rod; 56. impact rod; 57. extrusion spring; 58. connecting box; 6. receiving box; 7. driving wheel; 8. transmission wheel; 9. wheel frame. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0020] See also Figure 1 , Figure 2 and Figure 3 , a low-pressure casting mold for aluminum alloy automobile chassis castings, including an upper die 1; a rotary die 2; the upper die 1 is arranged above the rotary die 2. And the upper die 1 is connected to a hydraulic cylinder, and the hydraulic cylinder is used to press the upper die 1. The rotary die 2 is provided with a lower die 1 21, a lower die 22 and a lower die 3 23, and the lower die 1 21, the lower die 22 and the lower die 3 23 are distributed in a circular array with the center of the rotary die 2. Through the three lower dies, three times of pressing of a single stroke can be achieved, and each lower die will correspond to a different processing procedure. Die sleeve 3; the die sleeve 3 is connected with a die 1 31 and a die box 32, the die 1 31 corresponds to the lower die 22, and the die box 32 corresponds to the lower die 3 23. In this embodiment, the cooperation of the die 1 31 and the lower die 2 22 is used to achieve secondary molding or corner trimming, and the cooperation of the die box 32 will automatically lubricate and cool the mold cavity.

[0021] In this embodiment, the switching module 4 is used to automatically switch the rotating module 2; See also Figure 1 , Figure 3 and Figure 4 The switching module 4 includes a side mold frame 42, a connecting plate 43 is connected to the side mold frame 42, and the connecting plate 43 is connected to a power column 41 through a driving device 46. The power column 41 is connected to the rotary mold 2, and a connecting frame 45 is rotatably connected to the power column 41. The connecting frame 45 is connected to the mold sleeve 3. The downward movement of the side mold frame 42 will drive the intermittent rotation of the power column 41 as a whole, and then the rotation of the rotary mold 2 is driven by the power column 41, so that it can rotate to the corresponding position of the die 1 31 and the mold box 32. During the overall movement process, the power column 41 will not move when pressing down, and will only drive the power column 41 to rotate when it moves up and resets. Because the mold needs to be stably fixed during the pressing process, the entire rotary mold 2 will not move when the upper die 1 is pressed down. After that, when the upper die 1 rises, it means that the pressing is completed, and the rotary mold 2 will be rotated and shifted.

[0022] For further information, see Figure 3 , Figure 4 and Figure 5The driving device 46 includes a support 461, a guide rod 463 is connected to the support 461, one end of the guide rod 463 is slidably connected to the connecting frame 45, a sliding shaft rod 462 is connected to the support 461, and the sliding shaft rod 462 is slidably connected to the sliding groove 44 provided on the connecting plate 43, and a rotating rod 464 is rotatably connected to the support 461. The bottom of the rotating rod 464 is slidably connected to the spiral groove 47 provided on the power column 41 through a sliding pin. When the side mold frame 42 moves up, the connecting plate 43 will move up with it. Then, when moving up, the sliding shaft rod 462 will slide in the sliding groove 44. After the inclined design of the sliding groove 44, the sliding shaft rod 46 will be driven at this time. 2 moves forward and backward, thereby driving the rotating rod 464 to move forward and backward. One end of the rotating rod 464 slides on the power column 41 through a sliding pin, so it will slide in the surface spiral groove 47 of the power column 41, thereby driving the rotation of the power column 41, and then it will synchronously drive the rotating mold 2 to rotate 120°, and rotate the initially formed aluminum alloy chassis to the position of the die 1 31. As the hydraulic parts continue to press, the side mold frame 42 will be driven to move downward, and then the two pressing rods 48 will be driven to slide obliquely in the guide groove 49, so that the die 1 31 and the mold box 32 are correspondingly extruded and pressed, and the die 1 31 is extruded on the initially formed aluminum alloy chassis. A first spring 465 is connected to one side of the support 461, and the other end of the first spring 465 is connected to one side of the rotating rod 464. The first spring 465 is set to provide a certain elastic force to the rotating rod 464, so that when it reaches the top of the spiral groove 47, it will produce a small rotation, so that the sliding pin can smoothly enter the inclined spiral groove 47, thereby avoiding the situation where the sliding pin slides at the same position and cannot enter the inclined groove, resulting in the failure of the power column 41 to rotate.

[0023] For further information, see Figure 3 and Figure 4 The side mold frame 42 is provided with a guide groove 49, and a pressure rod 48 is slidably connected inside the guide groove 49. The pressure rod 48 is connected to the side of the die 1 31. Because the whole side mold frame 42 moves downward, it will drive the two pressure rods 48 to drive the die 1 31 and the mold box 32 to slide on the mold sleeve 3 through the guide groove 49 to form an extruded state, and the die 1 31 is extruded on the initially formed aluminum alloy chassis, which can be pressed and trimmed or punched for secondary forming, and is appropriately processed according to the actual chassis forming process. The extrusion of the mold box 32 is to extrude the sponge sheet 34 inside it onto the corresponding mold. Because the sponge sheet 34 absorbs the lubricating oil inside the oil pot 33, the extrusion at this time will automatically apply a certain amount of lubricating oil into the inner cavity of the mold, thereby lubricating the mold cavity and cooling it at the same time.

[0024] In addition, the auxiliary die set 5 is used to die-cast the chassis parts on the rotating die 2; See also Figure 1 and Figure 6 The auxiliary module 5 includes a rotating wheel 51, which is connected to the power column 41. A pressing plate 53 is abutted below the rotating wheel 51. A rack 52 is connected to the bottom of the pressing plate 53. A gear 54 is meshed on the rack 52. The two ends of the gear 54 are connected to a swing rod 55 through an axle rod. A striker 56 is connected to the bottom of the swing rod 55. When the power column 41 rotates each time, the rotating wheel 51 will be driven to rotate. The rotating wheel 51 will be pressed and contacted with the pressing plate 53, thereby driving the pressing plate 53 to move downward. The swing rod 55 will be driven to rotate through the meshing of the gear 54. After rotating a certain angle, the convex plate position of the rotating wheel 51 is separated from the pressing plate 53. The swing rod 55 is affected by gravity and will instantly drive the striker 56 to hit the rotating mold 2, transmitting the vibration force to multiple molds, so as to make the product in the mold cavity looser, and then more smoothly demold and automatically fall.

[0025] In addition, see Figure 6 The swing arm 55 is connected with an extrusion spring 57, one end of which is connected with a connection box 58, which is fixed on the connection frame 45. The purpose of arranging the extrusion spring 57 on the impact rod 56 is to enable the impact rod 56 to have a stronger impact force when it rotates or is released instantly, thereby ensuring that the internal chassis can be loosened.

[0026] It is worth noting that see Figure 6 and Figure 7 A driving wheel 7 is connected to the power column 41, and the driving wheel 7 is connected to the two transmission wheels 8 through a toothed belt. The transmission wheel 8 is connected to the mold sleeve 3 through a wheel frame 9. When the power column 41 rotates, the driving wheel 7 will be driven to rotate. Through the transmission of the belt, the two transmission wheels 8 will be driven to rotate. Therefore, the operator can place the blank on the belt and load it. Because manual discharge may result in a small space between the upper and lower molds, manual discharge is inconvenient, and safety accidents may occur, so the external conveying feeding method is used to make it smoother and more stable. At the same time, a whole plate is placed on the belt. With the first die-casting, the outer frame will remain, and it will move out of the working range with the movement of the conveyor belt.

[0027] Working principle: first, when the overall mold is being processed, the aluminum alloy blank will be in the position of the lower mold 21, and then the hydraulic component drives the upper mold 1 to press down, so that it acts on the position of the lower mold 21, and the upper mold 1 and the lower mold 21 are molded together, so that the aluminum alloy blank is initially die-casted, and then the hydraulic component drives the upper mold 1 to move up and reset, at this time, it will synchronously drive the side mold frame 42 to move up, and the connecting plate 43 will follow the upward movement, and then when moving up, the sliding shaft rod 462 will slide in the sliding groove 44, and through the inclined design of the sliding groove 44, at this time, it will drive the support 461 on the sliding shaft rod 462 to move back and forth, and then drive the rotating rod 464 to move back and forth, one end of the rotating rod 464 slides on the power column 41 through the sliding pin, so it will slide in the spiral groove 47 on the surface of the power column 41, and then through the spiral design, it drives the rotation of the power column 41 during the rise, and when the overall side mold frame 42 is pressed down, at this time, the rotating rod 464 slides on the spiral groove 47 through the shaft pin When the spiral groove 47 is in the horizontal groove and reaches the apex position of the spiral groove 47, the side mold frame 42 will drive the rotating rod 464 to pull back, so that the sliding pin slides in the inclined groove of the spiral groove 47. Therefore, during the overall movement process, the power column 41 will not move when pressed down, and will only drive the power column 41 to rotate when it moves up and resets. The guide rod 463 provided will directly limit the movement of the support 461 in the front and rear directions. After that, the rotation of the power column 41 will drive the rotating mold 2 to rotate 120°, and rotate the initially formed aluminum alloy chassis to the position of the die 1 31. As the hydraulic parts continue to press down, the side mold frame 42 will be driven to move downward, and then the two pressing rods 48 will be driven to slide obliquely in the guide groove 49, so that the die 1 31 and the mold box 32 are correspondingly extruded and pressed. The die 1 31 is extruded on the initially formed aluminum alloy chassis, which can be pressed and sliced ​​or punched for secondary forming, and is appropriately processed according to the actual chassis forming process. The extrusion of the mold box 32 is to squeeze the sponge sheet 34 inside it onto the corresponding mold. Because the sponge sheet 34 absorbs the lubricating oil inside the oil pot 33, the extrusion at this time will automatically apply a certain amount of lubricating oil into the inner cavity of the mold, thereby lubricating the mold cavity and cooling it. After that, with each re-pressing, the rotating mold 2 will be driven to move intermittently. When it rotates 180 degrees, the aluminum alloy chassis will be affected by gravity and will fall from the position of the drop port 35 to the inside of the receiving box 6 for collection.In order to prevent the chassis from getting stuck, the auxiliary module 5 is set. When the power column 41 rotates each time, it will drive the rotation of the rotating wheel 51. The rotation of the rotating wheel 51 will squeeze and contact with the pressure plate 53, thereby driving the pressure plate 53 to move downward, and the pressure plate 53 will drive the rack 52 to move downward. The rack 52 is slidably connected in the connecting frame 45, so the engagement of the gear 54 will drive the swing rod 55 to rotate. After rotating a certain angle, the convex plate position of the rotating wheel 51 is separated from the pressure plate 53. The swing rod 55 is affected by gravity and will instantly drive the striker 56 to hit the rotating mold 2, transmitting the vibration force to multiple molds, so as to make the product in the mold cavity looser, and then more smoothly demold and automatically fall. The purpose of setting the extrusion spring 57 on the striker 56 is to have a strong impact force when the striker 56 rotates or is released instantly, so as to ensure that the internal chassis can be looser. Therefore, the automatic switching of molds is realized as a whole, and the effect of multi-mold synchronous operation during single-step operation is achieved, thereby improving the forming efficiency of the aluminum alloy chassis during die-casting.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A low-pressure casting mold for aluminum alloy automobile chassis castings, characterized in that: include: Upper die (1); Rotary mold (2); Mold sleeve (3); A switching module (4) for automatically switching the rotating module (2); An auxiliary die set (5) is used for die-casting chassis parts on the rotary die (2); The upper pressing die (1) is pressed downward by the hydraulic component, driving the switching die set (4) to automatically rotate and switch the rotating die (2).

2. The low-pressure casting mold for aluminum alloy automobile chassis casting according to claim 1, characterized in that: The rotary mold (2) is provided with a lower mold 1 (21), a lower mold 2 (22) and a lower mold 3 (23), wherein the lower mold 1 (21), the lower mold 2 (22) and the lower mold 3 (23) are distributed in a circular array with the center of the rotary mold (2).

3. The low-pressure casting mold for aluminum alloy automobile chassis casting according to claim 2, characterized in that: The mold sleeve (3) is connected to a compression mold 1 (31) and a mold box (32); the compression mold 1 (31) corresponds to the lower mold 2 (22), and the mold box (32) corresponds to the lower mold 3 (23).

4. The low-pressure casting mold for aluminum alloy automobile chassis casting according to claim 3, characterized in that: A material drop opening (35) is provided below the mold sleeve (3), a sponge sheet (34) is provided inside the mold box (32), two oil pots (33) are connected to the mold box (32), and a material receiving box (6) is provided below the mold sleeve (3).

5. The low-pressure casting mold for aluminum alloy automobile chassis casting according to claim 3, characterized in that: The switching module (4) comprises a side mold frame (42), the side mold frame (42) is connected to a connecting plate (43), the connecting plate (43) is connected to a power column (41) via a driving device (46), the power column (41) is connected to the rotating mold (2), the power column (41) is rotatably connected to a connecting frame (45), and the connecting frame (45) is connected to the mold sleeve (3).

6. The low-pressure casting mold for aluminum alloy automobile chassis casting according to claim 5, characterized in that: The driving device (46) comprises a support (461), the support (461) is connected to a guide rod (463), one end of the guide rod (463) is slidably connected to the connecting frame (45), the support (461) is connected to a sliding shaft rod (462), the sliding shaft rod (462) is slidably connected in a sliding groove (44) provided on the connecting plate (43), the support (461) is rotatably connected to a rotating rod (464), the bottom of the rotating rod (464) is slidably connected in a spiral groove (47) provided on the power column (41) via a sliding pin, and one side of the support (461) is connected to a first spring (465), the other end of the first spring (465) is connected to one side of the rotating rod (464).

7. The low-pressure casting mold for aluminum alloy automobile chassis casting according to claim 5, characterized in that: The side mold frame (42) is provided with a guide groove (49), the interior of the guide groove (49) is slidably connected with a pressure rod (48), and the pressure rod (48) is connected to the side surface of the first pressure mold (31).

8. The low-pressure casting mold for aluminum alloy automobile chassis casting according to claim 5, characterized in that: The auxiliary module (5) comprises a rotating wheel (51), the rotating wheel (51) is connected to the power column (41), a pressure plate (53) is abutted below the rotating wheel (51), a rack (52) is connected to the bottom of the pressure plate (53), a gear (54) is meshed on the rack (52), two ends of the gear (54) are connected to a swing rod (55) via a shaft, and a striker (56) is connected to the bottom of the swing rod (55).

9. The low-pressure casting mold for aluminum alloy automobile chassis casting according to claim 8, characterized in that: The swing rod (55) is connected to a compression spring (57), one end of the compression spring (57) is connected to a connection box (58), and the connection box (58) is fixed on the connection frame (45).

10. The low-pressure casting mold for aluminum alloy automobile chassis casting according to claim 9, characterized in that: The power column (41) is connected to a driving wheel (7), the driving wheel (7) is connected to two transmission wheels (8) via a toothed belt, and the transmission wheels (8) are connected to the mold sleeve (3) via a wheel frame (9).

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