Automatic die-casting equipment for automobile aluminum alloy motor housing

Abstract

The present invention relates to the field of housing die-casting technology, and more specifically, to an automatic die-casting device for automotive aluminum alloy motor housings. The device comprises a frame and a die-casting roller, wherein a lower die is disposed on the die-casting roller; an arcuate groove is formed on the frame along the axis of the die-casting roller; a bracket is slidably disposed on the arcuate groove along the extension direction of the arcuate groove, and the bracket can rotate synchronously with the die-casting roller; an upper die is disposed below the bracket, which moves radially along the die-casting roller; a linear actuator is disposed on the bracket for driving the upper die to descend and close with the lower die; a cooling unit is disposed within the die-casting roller; the arcuate groove has a higher end, referred to as a first end, and a lower end, referred to as a second end; when the bracket is at the first end, the upper and lower dies are closed; when the bracket is at the second end, the upper and lower dies are separated. During the die-casting process, the die-casting roller is always in a rotating state, which is more efficient than conventional automatic die-casting processes.

Description

Technical Field

[0001] The present invention relates to the technical field of housing die-casting, in particular to automatic die-casting equipment for automobile aluminum alloy motor housings. Background Art

[0002] The die-casting process is mainly used in the production of automotive aluminum alloy motor housings. At present, the die-casting equipment can only achieve semi-automatic production and can only die-cast a single aluminum shell. After die-casting, manual subsequent removal is required, and the overall production efficiency needs to be improved.

[0003] Chinese patent announcement number CN220574695U discloses an automatic die-casting equipment for producing aluminum shells of automobile compressors, including a compressor circulation die-casting machine, a vibration motor, an assembly line conveyor belt and a shell placement box. The vibration motors are fixedly installed on both sides of the upper part of the compressor circulation die-casting machine, and an assembly line conveyor belt is provided below the compressor circulation die-casting machine. Shell placement boxes are distributed on the assembly line conveyor belt; the compressor circulation die-casting machine includes a frame, a horizontal plate, a die-casting cylinder, an upper mold die-casting plate, an upper mold, a pouring assembly, a die-casting machine shell, a die-casting slot, a discharge cylinder, a die-casting roller body, a lower mold, a die-casting motor, an outer frame, a cleaning air pump and a cleaning nozzle group. A horizontal plate is fixedly installed in the middle of the upper part of the frame, and a vibration motor is fixedly installed on the outer side of the upper part. A die-casting cylinder is fixedly installed on the horizontal plate, and an upper mold die-casting cylinder is fixedly installed on the output end of the die-casting cylinder. Plate, several upper molds are fixedly installed on the upper mold die-casting plate, the upper mold is connected to the casting assembly, and the casting assembly is installed on the horizontal plate; the die-casting machine casing is fixedly installed between the frames, and a die-casting slot adapted to the upper mold die-casting plate is opened on the top of the die-casting machine casing, and a discharge cylinder is fixedly installed at the bottom of the die-casting machine casing. The number of discharge cylinders is the same as that of the upper mold, and a die-casting roller body is rotatably installed inside the die-casting machine casing. Either end of the die-casting roller body rotates through the die-casting machine casing, the frame and the outer frame and is fixedly connected to the output end of the die-casting motor, and a lower mold is fixedly installed on the surface of the die-casting roller body; the die-casting motor is fixedly installed on the outer frame, the outer frame is fixedly installed on the frame, and a cleaning air pump is fixedly installed on the outer frame. The cleaning air pump is connected to the cleaning nozzle group through a pipeline, and the cleaning nozzle group is fixedly installed on one side of the inner part of the die-casting machine casing, and an assembly line conveyor belt is arranged below the die-casting machine casing.

[0004] The above scheme provides a circulating automatic die-casting equipment, which mainly relies on the rotation of the die-casting roller to achieve automatic die-casting and discharge. However, after die-casting, the molten metal needs to be cooled to make the molten metal solidify. The existing circulating automatic die-casting equipment needs to stop rotating while waiting for the molten metal to cool down. The rotating conveying advantage of the die-casting roller is greatly reduced due to the cooling of the molten metal. At the same time, in order to ensure the efficiency of automatic die-casting, the waiting time for the metal to cool is shorter than the traditional die-casting cooling time. This results in a higher temperature of the motor casing just discharged from the lower mold, which places high requirements on the heat resistance of the conveyor belt. The conveyor belt is in a high-temperature working loop for a long time, and its service life will also be reduced. Summary of the Invention

[0005] In response to the above problems, an automatic die-casting equipment for automobile aluminum alloy motor casings is provided. The equipment comprises an arc-shaped groove formed on a frame and a bracket provided on the arc-shaped groove. When the die-casting roller drives the lower mold to rotate to the bottom of the upper mold, the bracket rotates synchronously with the die-casting roller, and the bracket moves from the first end of the arc-shaped groove to the second end. At the same time, the linear drive drives the upper mold to descend, and the upper mold and the lower mold are closed to form a mold cavity. Molten metal is then injected into the mold cavity. After the molten metal fills the mold cavity, the molten metal is cooled. The cooling of the molten metal is completed before the bracket reaches the second end of the arc-shaped groove. After cooling, the upper mold and the lower mold are separated. The die-casting roller continues to rotate, and the bracket is reset from the second end of the arc-shaped groove to the first end. The automobile aluminum alloy motor casing is discharged from the lower mold which continues to rotate with the die-casting cabinet.

[0006] In order to solve the problems of the prior art, the present invention provides an automatic die-casting device for an automobile aluminum alloy motor casing, comprising a frame and a die-casting roller body rotatably arranged on the frame, wherein a lower mold is arranged on the die-casting roller body; an arc-shaped groove is opened on the frame along the axis of the die-casting roller body, and a bracket is slidingly arranged on the arc-shaped groove along the extension direction of the arc-shaped groove, and the bracket can rotate synchronously with the die-casting roller body, and an upper mold moving along the radial direction of the die-casting roller body is arranged below the bracket, and a linear drive for driving the upper mold to descend and close with the lower mold is arranged on the bracket, and a cooling unit is arranged in the die-casting roller body, the higher end of the arc-shaped groove is called the first end, and the lower end is called the second end, when the bracket is located at the first end, the upper mold and the lower mold are closed, and when the bracket is located at the second end, the upper mold and the lower mold are separated.

[0007] Preferably, an extension rod is vertically arranged on one side of the upper mold and rises and falls synchronously with the upper mold, a pushing block that can push the extension rod is fixed on the die-casting roller body, and the lower end height of the extension rod is lower than the lower end height of the upper mold.

[0008] Preferably, a reset unit is provided at one end of the bracket, and the reset unit includes a rotating arm hingedly provided at the end of the bracket, the length direction of the rotating arm is parallel to the radial direction of the die-casting roller body, and the rotating arm rotates around the axis of the die-casting roller body, and a weight is provided on one side of the frame for movement in the vertical direction, and a transmission unit is provided between the weight and the rotating arm, and the weight drives the rotating arm to rotate through the transmission unit.

[0009] Preferably, the transmission unit includes a gear ring that rotates along the axis of the die-casting roller body, the gear ring is fixedly connected to the end of the rotating arm, and a rack is vertically fixedly provided at the lower part of the weight, and the rack is engaged with the gear.

[0010] Preferably, a damping shell is vertically fixed on the frame, a vent is penetrated through the side wall of the damping shell, a damping rod is vertically fixed at the bottom of the weight, the damping rod extends into the damping shell and slides with the damping shell.

[0011] Preferably, a switch valve is provided at the lower portion of the damping shell.

[0012] Preferably, a pressure sensor for detecting the pressure of the bracket is provided above the second end portion of the arc-shaped groove.

[0013] Preferably, a spring is vertically arranged between the pressure sensor and the second end of the arc-shaped slot, and both ends of the spring are fixedly connected to the second end of the arc-shaped slot and the pressure sensor respectively.

[0014] Preferably, a discharge plate is obliquely provided below the frame, and a plurality of rollers are rotatably provided on the discharge plate along an extension direction of the discharge plate.

[0015] Preferably, a plurality of fans are provided on the frame for blowing air to the lower mold after unloading.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention provides an arcuate groove on the frame and arranges a bracket on the arcuate groove. When the die-casting roller drives the lower mold to rotate to directly below the upper mold, the bracket rotates synchronously with the die-casting roller, moving from the first end of the arcuate groove to the second end. At the same time, the linear drive drives the upper mold to descend, and the upper and lower molds close to form a mold cavity. Molten metal is then injected into the mold cavity. After the molten metal fills the mold cavity, the molten metal is cooled. The molten metal is cooled before the bracket reaches the second end of the arcuate groove. After cooling, the upper and lower molds separate, and the die-casting roller continues to rotate. The bracket returns from the second end of the arcuate groove to the first end, and the lower mold, which continues to rotate with the die-casting cabinet, discharges the automotive aluminum alloy motor housing. In summary, during the die-casting process, the die-casting roller of the present invention is always in a rotating state, which is more efficient than traditional automatic die-casting processes.

[0018] 2. By setting a push block and an extension rod and changing the extension length of the output end of the linear drive, it is possible to control the closing or separation of the upper and lower molds while making the bracket rotate synchronously with the die-casting roller body. Before the bracket reaches the second end of the arc groove, the extension rod is withdrawn from the annular sweeping area of ​​the push block, thereby achieving the effect of the die-casting roller body continuing to rotate and the bracket resetting and rotating.

[0019] 3. By providing a damping shell and damping rod, when the weight descends, the damping rod descends synchronously with the weight, squeezing the air in the damping shell, which is then discharged through the vent. Due to the small diameter of the vent, the vent overflows the discharged air, thereby decelerating the weight as it descends and preventing the bracket from colliding with the first end of the arc groove due to excessive movement. Furthermore, an on-off valve is provided at the bottom of the damping shell. When the bracket rotates synchronously with the die-casting roller, the on-off valve opens, and the vent does not damp the rotating bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a three-dimensional schematic diagram of an automatic die-casting equipment for automobile aluminum alloy motor housing of the present invention Figure 1 .

[0021] Figure 2 This invention is an automatic die-casting equipment for automobile aluminum alloy motor shell Figure 1 A local enlarged schematic diagram of point A in the middle.

[0022] Figure 3 It is a side view of an automatic die-casting device for automobile aluminum alloy motor housing according to the present invention.

[0023] Figure 4 This invention is an automatic die-casting equipment for automobile aluminum alloy motor shell Figure 3 Schematic cross-sectional view at the middle BB.

[0024] Figure 5 This invention is an automatic die-casting equipment for automobile aluminum alloy motor shell Figure 4 A partial enlarged schematic diagram of point C in the middle.

[0025] Figure 6 The present invention is a schematic cross-sectional perspective view of an automatic die-casting device for an automotive aluminum alloy motor housing.

[0026] Figure 7 This invention is an automatic die-casting equipment for automobile aluminum alloy motor shell Figure 6 A local enlarged schematic diagram of point D in the middle.

[0027] Figure 8 This is a three-dimensional schematic diagram of an automatic die-casting equipment for automobile aluminum alloy motor housing of the present invention Figure 2.

[0028] Figure 9 The present invention is a three-dimensional schematic diagram of an automatic die-casting device for an automobile aluminum alloy motor housing with the housing removed.

[0029] Figure 10 The present invention is a three-dimensional schematic diagram of an automatic die-casting device for an automobile aluminum alloy motor housing with the housing removed and the output end portion of a linear drive extended.

[0030] Figure 11 This invention is an automatic die-casting equipment for automobile aluminum alloy motor shell Figure 10 A partial enlarged schematic diagram of point E in the middle.

[0031] The numbers in the figure are:

[0032] 1. Frame; 11. Arc groove; 111. Pressure sensor; 112. Spring; 12. Bracket; 13. Linear drive; 14. Upper mold; 15. Extension rod; 16. Push block; 17. Reset unit; 171. Rotating arm; 172. Weight; 173. Transmission unit; 1731. Gear ring; 1732. Rack; 174. Damping shell; 1741. Vent; 175. Damping rod; 176. Switch valve; 18. Discharge plate; 181. Roller; 19. Fan; 2. Die-casting roller body; 21. Lower mold; 22. Cooling unit; 3. Motor shell. DETAILED DESCRIPTION

[0033] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Reference Figure 1-Figure 4 and Figure 7 : An automatic die-casting equipment for automobile aluminum alloy motor casing, comprising a frame 1 and a die-casting roller body 2 rotatably arranged on the frame 1, and a lower mold 21 is arranged on the die-casting roller body 2; an arc-shaped groove 11 is opened on the frame 1 along the axis of the die-casting roller body 2, and a bracket 12 is slidably arranged on the arc-shaped groove 11 along the extension direction of the arc-shaped groove 11, and the bracket 12 can rotate synchronously with the die-casting roller body 2, and an upper mold 14 that moves along the radial direction of the die-casting roller body 2 is arranged below the bracket 12, and a linear drive 13 for driving the upper mold 14 to descend and close with the lower mold 21 is arranged on the bracket 12, and a cooling unit 22 is arranged in the die-casting roller body 2, the higher end of the arc-shaped groove 11 is called the first end, and the lower end is called the second end, when the bracket 12 is at the first end, the upper mold 14 and the lower mold 21 are closed, and when the bracket 12 is at the second end, the upper mold 14 and the lower mold 21 are separated.

[0035] In the process of processing the aluminum alloy motor housing 3 of automobiles, the existing processing methods mostly adopt a single die-casting method for processing. After the die-casting is completed, the staff needs to take out the die-cast aluminum alloy motor housing 3 of automobiles, and the output is limited. In order to increase the output and meet the market demand, the existing technology has designed a device that can automatically die-cast the aluminum alloy motor housing 3 of automobiles, such as the automatic die-casting equipment for producing aluminum housings of automobile compressors disclosed in Chinese Patent Publication No. CN220574695U, which includes a die-casting roller body 2, and the lower mold 21 is set on the die-casting roller body 2. At the same time, the upper mold 14 is set above the die-casting roller body 2, and the die-casting roller body 2 is rotated. When the die-casting roller body 2 drives the lower mold 21 to rotate to the bottom of the upper mold 14, the upper mold 14 closes on the lower mold 21. At this time, the die-casting roller body 2 stops rotating, and the upper mold 14 and the lower mold 21 form a mold cavity. Molten metal is injected into the mold cavity. After the molten metal cools, the upper mold 14 and the lower mold 21 are separated, and the die-casting roller body 2 drives the lower mold 21 to rotate. The lower mold 2 1 The aluminum alloy motor housing 3 of the automobile that has cooled and solidified is rotated 180 degrees, and then the aluminum alloy motor housing 3 is discharged from the lower mold 21. Although the equipment avoids the need for staff to unload materials and reduces work intensity, the preparation efficiency is still not improved. This is because after the upper mold 14 and the lower mold 21 are closed, the die-casting roller body 2 needs to stop rotating. The die-casting roller body 2 needs to wait for the molten metal to be filled and cooled and solidified. Moreover, after the upper mold 14 and the lower mold 21 are separated, the rotation speed of the die-casting roller body 2 cannot be too fast, otherwise the aluminum alloy motor housing 3 of the automobile in the lower mold 21 is easily thrown out, thereby causing damage to the aluminum alloy motor housing 3. Therefore, the overall preparation efficiency is low. At the same time, the discharged aluminum alloy motor housing 3 is transported by a belt conveyor, which requires high high temperature resistance of the conveyor belt and has a short service life.

[0036] In order to avoid the above situation, the existing automatic die-casting equipment is redesigned so that the die-casting roller 2 does not need to be stopped when injecting molten metal and cooling the molten metal, thereby improving the die-casting efficiency. The specific structure and working process of the present invention are as follows:

[0037] The die-casting roller body 2 is driven by a magnetic ring drive, and can also be driven by other drive devices according to actual conditions. The higher end of the arc groove 11 is called the first end, and the lower end is called the second end. When the bracket 12 is located at the first end, the linear drive 13 provided on the bracket 12 is in a vertical state. When the bracket 12 is located at the second end, the linear drive 13 provided on the bracket 12 is in a horizontal state. The cooling unit 22 is mainly composed of cooling pipes. The cooling unit 22 is a prior art and will not be described in detail here. During the die-casting operation, the die-casting roller body 2 is in a state of continuous rotation. Two groups of lower molds 21 are provided on the die-casting roller body 2, and each group is provided with a plurality of lower molds 21 arranged along the axis direction of the die-casting roller body 2. Before the lower mold 21 reaches directly below the upper mold 14, the linear drive 13 is in a retracted state and the upper mold 14 is in a raised state. The bracket 12 is now located at the first end of the arc groove 11. When the die-casting roller body 2 drives one group of lower molds 21 to rotate to directly below the upper mold 14, the bracket 12 begins to rotate synchronously with the die-casting roller body 2, and at this time the linear drive 13 drives the upper mold 14 to descend. Since the bracket 12 rotates synchronously with the die-casting roller body 2, the bracket 12 and the die-casting roller body 2 are relatively stationary, and the upper mold 14 and the lower mold 21 are always aligned. When the upper mold 14 and the lower mold 21 are closed, the mold cavity is formed, and then the molten metal is injected into the mold cavity. After the molten metal fills the mold cavity, the cooling unit 22 starts to start, and the cooling unit 22 cools the molten metal in the mold cavity. The molten metal injection process described above is the existing technology, and the specific working principle will not be described in detail. Because the die-casting roller 2 rotates slowly, the molten metal in the die cavity cools and solidifies as the bracket 12 rotates with the die-casting roller 2 from the first end of the arc-shaped slot 11 to the second end. By the time the bracket 12 reaches the second end of the arc-shaped slot 11, the upper mold 14 and lower mold 21 have separated. The die-casting roller 2 continues to rotate, while the bracket 12 drives the upper mold 14 from the second end of the arc-shaped slot 11 back to the first end. The bracket 12 stops moving after reaching the first end of the arc-shaped slot 11. It is worth noting that when the bracket 12 is at the first end of the arc-shaped slot 11, the linear actuator 13 is in a vertical position. When the bracket 12 is at the second end of the arc-shaped slot 11, the linear actuator 13 is in a horizontal position, meaning that the opening of the lower mold 21 is also horizontal. As the die-casting roller 2 continues to rotate, the opening of the lower mold 21, which receives the motor housing 3, begins to tilt downward, allowing the motor housing 3 contained in the lower mold 21 to be ejected from the lower mold 21.

[0038] By opening an arcuate groove 11 on the frame 1 and arranging a bracket 12 on the arcuate groove 11, when the die-casting roller body 2 drives the lower mold 21 to rotate to the position directly below the upper mold 14, the bracket 12 rotates synchronously with the die-casting roller body 2, and the bracket 12 moves from the first end of the arcuate groove 11 to the second end. At the same time, the linear drive 13 drives the upper mold 14 to descend, and the upper mold 14 and the lower mold 21 close to form a mold cavity. Molten metal is then injected into the mold cavity. After the molten metal fills the mold cavity, the molten metal is cooled. The molten metal is cooled before the bracket 12 reaches the second end of the arcuate groove 11. After cooling, the upper mold 14 and the lower mold 21 separate, and the die-casting roller body 2 continues to rotate. The bracket 12 returns to the first end along the second end of the arcuate groove 11, and the lower mold 21 continues to rotate with the die-casting cabinet to discharge the automotive aluminum alloy motor housing 3. In summary, during the die-casting process of the present invention, the die-casting roller body 2 is always in a rotating state, which is more efficient than the traditional automatic die-casting process.

[0039] Reference Figure 11 : An extension rod 15 is vertically arranged on one side of the upper mold 14 and rises and falls synchronously with the upper mold 14. A pushing block 16 that can push the extension rod 15 is fixedly arranged on the die-casting roller body 2. The lower end height of the extension rod 15 is lower than the lower end height of the upper mold 14.

[0040] The push block 16 provided on the die-casting roller body 2 forms an annular sweeping area when the die-casting roller body 2 rotates. The linear drive 13 has three states when driving the upper mold 14 to move. The first state is that the output end of the linear drive 13 is completely retracted. At this time, the upper mold 14 and the lower mold 21 are separated from each other, and the lower end of the extension rod 15 does not invade the annular sweeping area of ​​the push block 16; the second state is that the output end of the linear drive 13 is partially retracted. At this time, the upper mold 14 and the lower mold 21 are still in a state of separation from each other, but the lower end of the extension rod 15 invades the annular sweeping area of ​​the push block 16. When the die-casting roller body 2 rotates, the push block 16 can separate from the extension rod 15. 15 is in contact, and when the pushing block 16 is in contact with the extension rod 15, the upper mold 14 and the lower mold 21 are aligned. After the pushing block 16 is in contact with the extension rod 15, the pushing block 16 pushes the extension rod 15, so that the bracket 12 rotates synchronously with the die-casting roller body 2; the third is that the output end of the linear drive 13 is fully extended, and the upper mold 14 and the lower mold 21 are completely closed. At this time, the extension rod 15 is still in the annular sweeping area of ​​the pushing block 16, and the pushing block 16 can still push the extension rod 15, so that the bracket 12 rotates synchronously with the die-casting roller body 2.

[0041] During the processing, the bracket 12 is first placed at the first end of the arc groove 11. At this time, the output end of the linear drive 13 is partially extended, and the lower end of the extension rod 15 invades the annular sweeping area of ​​the push block 16. As the die-casting roller body 2 rotates, the push block 16 contacts the extension rod 15 and pushes the bracket 12 to rotate synchronously. At the same time, the linear drive 13 begins to push the upper mold 14 to move toward the lower mold 21 and finally closes. At this time, the output end of the linear drive 13 is completely extended. When the molten metal is injected into the mold cavity and completed cooling, the output end of the linear drive 13 is completely retracted, the upper mold 14 is separated from the lower mold 21, and the extension rod 15 is withdrawn from the annular sweeping area of ​​the push block 16. The bracket 12 can then be reset from the second end of the arc groove 11 to the first end of the arc groove 11.

[0042] By providing the push block 16 and the extension rod 15 and by changing the extension length of the output end of the linear drive 13, it is achieved that while controlling the closing or separation of the upper mold 14 and the lower mold 21, the bracket 12 can also rotate synchronously with the die-casting roller body 2, and before the bracket 12 reaches the second end of the arc groove 11, the extension rod 15 is withdrawn from the annular sweeping area of ​​the push block 16, thereby achieving the effect of the die-casting roller body 2 continuing to rotate and the bracket 12 performing reset rotation.

[0043] Reference Figure 9 and Figure 10 : A reset unit 17 is provided at one end of the bracket 12, and the reset unit 17 includes a rotating arm 171 hingedly provided at the end of the bracket 12. The length direction of the rotating arm 171 is parallel to the radial direction of the die-casting roller body 2, and the rotating arm 171 rotates around the axis of the die-casting roller body 2. A weight 172 is provided on one side of the frame 1 for movement in the vertical direction, and a transmission unit 173 is provided between the weight 172 and the rotating arm 171. The weight 172 drives the rotating arm 171 to rotate through the transmission unit 173.

[0044] Reference Figure 9 : The transmission unit 173 includes a gear ring 1731 that rotates along the axis of the die-casting roller body 2. The gear ring 1731 is fixedly connected to the end of the rotating arm 171. A rack 1732 is vertically fixed at the lower part of the weight 172, and the rack 1732 is engaged with the gear.

[0045] When the bracket 12 rotates synchronously with the die-casting roller body 2, the bracket 12 moves from the first end of the arc groove 11 to the second end of the arc groove 11, and the moving bracket 12 drives the rotating arm 171 to rotate. The gear ring 1731 starts to rotate under the drive of the rotating arm 171, and the gear ring 1731 drives the rack 1732 to rise in the vertical direction. The weight 172 gradually rises under the action of the rack 1732. When the extension rod 15 is withdrawn from the annular sweeping area of ​​the push block 16, the weight 172 generates a rotational force on the gear ring 1731 through the rack 1732, so that the rotating arm 171 drives the bracket 12 to reset from the second end of the arc groove 11 to the first end of the arc groove 11.

[0046] Reference Figure 5 and Figure 6 : A damping shell 174 is vertically fixed on the frame 1, and a vent hole 1741 is opened through the side wall of the damping shell 174. A damping rod 175 is vertically fixed at the bottom of the weight 172. The damping rod 175 extends into the damping shell 174 and slides with the damping shell 174.

[0047] Since the reset movement of the bracket 12 is achieved by the weight of the weight 172 itself, when the weight 172 descends, the descending speed of the weight 172 will gradually increase, resulting in the bracket 12 gradually increasing its rotation speed during the reset process. It is easy for the bracket 12 to collide with the first end of the arc groove 11 when it reaches the first end of the arc groove 11. In order to avoid the collision of the bracket 12 with the first end of the arc groove 11, a damping shell 174 and a damping rod 175 are provided. When the weight 172 descends, the damping rod 175 descends synchronously with the weight 172, and the damping rod 175 squeezes the air in the damping shell 174, and the air in the damping shell 174 is discharged from the vent 1741. Since the aperture of the vent 1741 is small, the vent 1741 produces an overflow effect on the discharged air, thereby achieving a deceleration effect on the descent of the weight 172, and avoiding the bracket 12 from colliding with the first end of the arc groove 11 due to excessive movement speed.

[0048] Reference Figure 5 : A switch valve 176 is provided at the lower portion of the damping shell 174.

[0049] If the switch valve 176 is not provided at the bottom of the damping shell 174, when the bracket 12 rotates synchronously with the die-casting roller body 2, the outside air can only enter the damping shell 174 through the vent hole 1741. The vent hole 1741 produces an overflow effect on the outside air, causing the die-casting roller body 2 to be easily affected by damping when driving the bracket 12 to rotate, which in turn causes a larger force between the push block 16 and the extension rod 15. After the switch valve 176 is provided, when the bracket 12 needs to rotate synchronously with the die-casting roller body 2, the switch valve 176 provided at the bottom of the damping shell 174 is opened, and the outside air enters the damping shell 174 through the switch valve 176, and the vent hole 1741 no longer overflows the outside air. When the bracket 12 needs to be reset, the switch valve 176 is closed and the vent hole 1741 overflows.

[0050] Reference Figure 2 : A pressure sensor 111 for detecting the pressure of the bracket 12 is provided above the second end of the arc-shaped groove 11.

[0051] By arranging a pressure sensor 111 above the second end of the arc groove 11, when the bracket 12 rotates with the die-casting roller body 2 and presses the pressure sensor 111, the linear drive 13 drives the upper mold 14 to fully retract, so that the upper mold 14 is separated from the lower mold 21, and at the same time the extension rod 15 is withdrawn from the annular sweeping area of ​​the push block 16.

[0052] Reference Figure 2 : A spring 112 is vertically arranged between the pressure sensor 111 and the second end of the arc-shaped slot 11, and both ends of the spring 112 are fixedly connected to the second end of the arc-shaped slot 11 and the pressure sensor 111 respectively.

[0053] After the spring 112 is set, the bracket 12 rotates with the die-casting roller body 2 and triggers the pressure sensor 111. The die-casting roller body 2 does not need to stop rotating. During the process of separating the upper mold 14 and the lower mold 21, the spring 112 is gradually compressed, and the bracket 12 rotates synchronously with the die-casting roller body 2. When the extension rod 15 is completely withdrawn from the annular sweeping area of ​​the push block 16, the bracket 12 starts to reset and the spring 112 recovers from the compressed state.

[0054] Reference Figure 8 A discharge plate 18 is obliquely provided below the frame 1 , and a plurality of rollers 181 are rotatably provided on the discharge plate 18 along the extending direction of the discharge plate 18 .

[0055] When the die-casting roller body 2 drives the lower mold 21 to rotate and discharges the formed motor housing 3, the motor housing 3 falls on the roller 181 instead of directly falling on the belt conveyor. A belt conveyor is provided below the discharge plate 18. The motor housing 3 is transported by the roller 181 so that the motor housing 3 is cooled again in the air, thereby reducing the thermal damage to the belt conveyor caused by the temperature of the motor housing 3.

[0056] Reference Figure 6 and Figure 8 : A plurality of fans 19 are provided on the frame 1 for blowing air to the lower mold 21 after unloading.

[0057] Working principle: During the die-casting operation, the die-casting roller body 2 is in a state of continuous rotation. Two groups of lower molds 21 are provided on the die-casting roller body 2, and each group is provided with multiple lower molds 21 arranged along the axis direction of the die-casting roller body 2. Before the lower mold 21 reaches directly below the upper mold 14, the linear drive 13 is in a retracted state and the upper mold 14 is in a raised state. The bracket 12 is now located at the first end of the arc groove 11. When the die-casting roller body 2 drives one group of lower molds 21 to rotate to directly below the upper mold 14, the bracket 12 begins to rotate synchronously with the die-casting roller body 2, and at this time the linear drive 13 drives the upper mold 14 to descend. Since the bracket 12 rotates synchronously with the die-casting roller body 2, the bracket 12 and the die-casting roller body 2 are relatively stationary, and the upper mold 14 and the lower mold 21 are always aligned. When the upper mold 14 and the lower mold 21 are closed, the mold cavity is formed, and then the molten metal is injected into the mold cavity. After the molten metal fills the mold cavity, the cooling unit 22 starts to start, and the cooling unit 22 cools the molten metal in the mold cavity. The molten metal injection process described above is the existing technology, and the specific working principle will not be described in detail. Because the die-casting roller 2 rotates slowly, the molten metal in the die cavity cools and solidifies as the bracket 12 rotates with the die-casting roller 2 from the first end of the arc-shaped slot 11 to the second end. By the time the bracket 12 reaches the second end of the arc-shaped slot 11, the upper mold 14 and lower mold 21 have separated. The die-casting roller 2 continues to rotate, while the bracket 12 drives the upper mold 14 from the second end of the arc-shaped slot 11 back to the first end. The bracket 12 stops moving after reaching the first end of the arc-shaped slot 11. It is worth noting that when the bracket 12 is at the first end of the arc-shaped slot 11, the linear actuator 13 is in a vertical position. When the bracket 12 is at the second end of the arc-shaped slot 11, the linear actuator 13 is in a horizontal position, meaning that the opening of the lower mold 21 is also horizontal. As the die-casting roller 2 continues to rotate, the opening of the lower mold 21, which receives the motor housing 3, begins to tilt downward, allowing the motor housing 3 contained in the lower mold 21 to be ejected from the lower mold 21.

[0058] The above embodiments merely represent one or more embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of the present invention. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present invention, and such modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the appended claims.

Claims

1. An automatic die-casting device for an automotive aluminum alloy motor housing, comprising a frame (1) and a die-casting roller (2) rotatably arranged on the frame (1), wherein a lower mold (21) is arranged on the die-casting roller (2); It is characterized in that An arc groove (11) is provided on the frame (1) along the axis of the die-casting roller body (2), a bracket (12) is provided on the arc groove (11) so as to slide along the extension direction of the arc groove (11), the bracket (12) can rotate synchronously with the die-casting roller body (2), an upper mold (14) is provided below the bracket (12) and moves along the radial direction of the die-casting roller body (2), a linear drive (13) is provided on the bracket (12) for driving the upper mold (14) to descend and close with the lower mold (21), a cooling unit (22) is provided in the die-casting roller body (2), the higher end of the arc groove (11) is called the first end, and the lower end is called the second end, when the bracket (12) is located at the first end, the upper mold (14) and the lower mold (21) are closed, and when the bracket (12) is located at the second end, the upper mold (14) and the lower mold (21) are separated; An extension rod (15) is vertically arranged on one side of the upper mold (14) and is synchronously raised and lowered with the upper mold (14). A pushing block (16) capable of pushing the extension rod (15) is fixedly arranged on the die-casting roller body (2). The lower end height of the extension rod (15) is lower than the lower end height of the upper mold (14). A reset unit (17) is provided at one end of the bracket (12), and the reset unit (17) includes a rotating arm (171) hingedly provided at the end of the bracket (12). The length direction of the rotating arm (171) is parallel to the radial direction of the die-casting roller body (2), and the rotating arm (171) rotates around the axis of the die-casting roller body (2). A weight (172) is provided on one side of the frame (1) so as to move in the vertical direction. A transmission unit (173) is provided between the weight (172) and the rotating arm (171), and the weight (172) drives the rotating arm (171) to rotate through the transmission unit (173).

2. The automatic die-casting equipment for automobile aluminum alloy motor housing according to claim 1 is characterized in that: The transmission unit (173) includes a gear ring (1731) that rotates along the axis of the die-cast roller body (2), the gear ring (1731) is fixedly connected to the end of the rotating arm (171), and a rack (1732) is vertically fixedly provided at the lower part of the weight (172), and the rack (1732) is engaged with the gear.

3. The automatic die-casting equipment for automobile aluminum alloy motor housing according to claim 1 is characterized in that: A damping shell (174) is vertically fixed on the frame (1), a vent hole (1741) is provided through the side wall of the damping shell (174), and a damping rod (175) is vertically fixed on the bottom of the weight (172), the damping rod (175) extends into the damping shell (174) and is slidably engaged with the damping shell (174).

4. The automatic die-casting equipment for automobile aluminum alloy motor housing according to claim 3 is characterized in that: A switch valve (176) is provided at the lower portion of the damping shell (174).

5. The automatic die-casting equipment for automobile aluminum alloy motor housing according to claim 1 is characterized in that: A pressure sensor (111) for detecting the pressure of the bracket (12) is provided above the second end of the arc-shaped groove (11).

6. The automatic die-casting equipment for automobile aluminum alloy motor housing according to claim 5, characterized in that: A spring (112) is vertically arranged between the pressure sensor (111) and the second end of the arc-shaped slot (11), and two ends of the spring (112) are fixedly connected to the second end of the arc-shaped slot (11) and the pressure sensor (111), respectively.

7. The automatic die-casting equipment for automobile aluminum alloy motor housing according to claim 1, characterized in that: A discharge plate (18) is obliquely arranged below the frame (1), and a plurality of rollers (181) are rotatably arranged on the discharge plate (18) along the extension direction of the discharge plate (18).

8. The automatic die-casting equipment for automobile aluminum alloy motor housing according to claim 1, characterized in that: A plurality of fans (19) for blowing air onto the lower mold (21) after unloading are arranged on the frame (1).

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