Die-casting device for producing a steering gear housing

Abstract

The present application relates to the technical fields of aluminum alloy material pressure casting, and particularly relates to a pressure casting device for steering gear housing production, which comprises a bottom plate, a machine box arranged on the top of the bottom plate, rectangular holes opened on the left sides of the front and rear sidewalls of the machine box, a fixing base arranged on the top of the bottom plate, the fixing base located in the machine box, a male mold plate arranged on the left side of the fixing base, and a fixing seat arranged on the right side of the fixing base. The device is provided with a spray pipe with a bendable angle matched with a cylindrical air cylinder, and the mold release agent can be accurately sprayed to each part of the cavity of the fixed mold and the movable mold, so as to avoid the dead angle and waste phenomenon existing in the traditional spraying.

Description

Technical Field

[0001] This invention relates to the field of aluminum alloy die casting technology, and in particular to a die casting apparatus for producing steering gear housings. Background Technology

[0002] The steering gear housing is a core load-bearing component of the automotive steering system, and its structural precision and mechanical strength directly affect the vehicle's steering stability and driving safety. Because this component needs to adapt to complex assembly scenarios, it is typically designed with an irregular cavity structure and requires high strength and high density molding quality. Die casting, due to its high molding efficiency, excellent dimensional accuracy, and suitability for mass production, has become the mainstream processing method for steering gear housings.

[0003] In the current die-casting production of steering gear housings, there are still many technical pain points that restrict production efficiency and product quality: First, the release agent spraying process often uses fixed-direction nozzles or manual-assisted spraying, which makes it difficult to accurately cover the complex curved surfaces of the cavity, and is prone to problems such as uneven spraying and missed spraying, resulting in sticking to the mold, surface scratches, and even affecting the cavity filling effect when the product is demolded; Second, the material handling operation often relies on a single adsorption or clamping mechanism. For the irregular structure and round hole design on both sides of the steering gear housing, the existing material handling device is prone to unstable clamping and material deviation. Moreover, the coordination between material handling, mold closing, and spraying processes is poor, which prolongs the production cycle. The automation integration of some die-casting devices is low, and the action connection of spraying, liquid injection, and material handling processes relies on manual intervention, which not only reduces production efficiency, but also easily affects product consistency due to human operation errors.

[0004] In addition, the existing die-casting equipment lacks sufficient control over mold preheating, stability of hydraulic injection of metal, and coordination of various auxiliary processes, making it difficult to meet the comprehensive requirements of molding accuracy, production efficiency, and environmental protection in the mass production of steering gear housings. Therefore, it is necessary to design a die-casting equipment for steering gear housing production that can accurately spray and stably pick up materials. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, the present invention provides a die-casting apparatus for producing steering gear housings.

[0006] The technical solution is as follows: A die-casting device for producing steering gear housings includes a base plate, a housing, a fixed base, guide shafts, a male mold plate, a fixed seat, a female mold plate, a fixed mold, a moving mold, a hydraulic cylinder, a fixed frame, an injection rod, a mounting base, a swing assembly, a material handling assembly, a spraying assembly, and a liquid injection assembly. A housing is mounted on the top of the base plate. Rectangular holes are opened on the left side of both the front and rear side walls of the housing. A fixed base is mounted on the top of the base plate, located inside the housing. A male mold plate is mounted on the left side of the fixed base, and a fixed seat is mounted on the right side of the fixed base. Guide shafts are symmetrically arranged laterally at the bottom and top of the male mold plate and the fixed seat. Female mold plates are slidably mounted on the four guide shafts. A hydraulic cylinder is installed on the fixed base. The telescopic rod of the hydraulic cylinder is connected to the center of the right end face of the female template. A moving mold is installed on the female template, and a fixed mold is installed on the male template. When the male and female templates are closed, the moving mold and the fixed mold form the cavity of the steering gear housing. A fixed frame is installed on the top left side of the base plate. An injection rod is installed on the fixed frame and connects to the fixed mold. A mounting base is installed on the top left side of the fixed base. A swing assembly is installed on the rear side of the mounting base. A material picking assembly is installed on the swing assembly. The material picking assembly is located outside the rectangular hole on the rear side wall of the machine box. A spraying assembly is installed on the front side of the mounting base. A liquid injection assembly is installed on the front side of the machine box. The liquid injection assembly is connected and cooperates with the spraying assembly.

[0007] More preferably, the swing assembly includes a first rotating ring, a first arc frame, a connecting plate, and a first cylinder. The first rotating ring is rotatably mounted on the lower rear guide shaft, the first arc frame is mounted on the first rotating ring, the connecting plate is mounted on the upper front side of the first arc frame, and the first cylinder is rotatably mounted on the top rear side inside the mounting base. The telescopic rod of the first cylinder is rotatably connected to the bottom of the first arc frame.

[0008] More preferably, the material handling assembly includes a second cylinder, a fixed plate, a suction cup, a double-headed cylinder, an insert rod, and a vacuum pump. Four second cylinders are provided on the front side of the connecting plate, and a fixed plate is provided between the telescopic rods of the second cylinders. A suction cup is embedded in the middle of the fixed plate. A double-headed cylinder is provided at the bottom of the suction cup housing. An insert rod is installed on each of the two telescopic rods of the double-headed cylinder. A vacuum pump is provided on the fixed plate and is connected to the suction cup.

[0009] More preferably, the spraying assembly includes a second rotating ring, a second arc-shaped frame, a third cylinder, a rectangular cavity, a cylindrical air cylinder, and a spray pipe. The second rotating ring is rotatably mounted on the lower front guide shaft, and the second arc-shaped frame is mounted on the second rotating ring. The third cylinder is rotatably mounted on the top front side inside the mounting base. The telescopic rod of the third cylinder is rotatably connected to the bottom of the second arc-shaped frame. A rectangular cavity is provided on the upper rear side of the first arc-shaped frame. Cylindrical air cylinders are connected to the rectangular cavity at intervals on the left and right sides. A bendable spray pipe is mounted on the cylindrical air cylinder.

[0010] More preferably, the liquid injection assembly includes a liquid tank, a bracket, a pump body, and hoses. The liquid tank is located on the front side of the casing, the bracket is located on the upper left side wall of the liquid tank, and the pump body is located on the upper left side wall of the liquid tank. Both the outlet and inlet ends of the pump body are equipped with hoses. The hose at the outlet end is wound around the bracket, and the other end is connected to the rectangular cavity. The hose at the inlet end passes through the liquid tank, and the other end is located in the lower part of the liquid tank.

[0011] More preferably, it also includes a deflector plate, with deflectors plated on both the left and right sides of the mounting base.

[0012] More preferably, it also includes a control panel, which is installed on the front side wall of the chassis. The control panel contains a controller, which is connected to the hydraulic cylinder, the first cylinder, the second cylinder, the double-headed cylinder, the third cylinder, the pump body, and other power components via wiring.

[0013] More preferably, it also includes liquid collection frames, with two liquid collection frames provided on the upper left side of the fixed base, and the liquid collection frames are located below the guide plate.

[0014] Beneficial effects: This device, by using a flexible nozzle and a cylindrical air cylinder, allows the release agent to be precisely sprayed into all parts of the cavities of the fixed and moving molds, avoiding the dead corners and waste that exist in traditional spraying. This significantly improves the release effect and cavity cleanliness. The material handling component adopts a dual fixing method of suction cup adsorption and insertion rod positioning. It uses a vacuum pump to create negative pressure to adsorb the workpiece surface, and a double-headed cylinder to drive the insertion rod to insert into the round hole of the workpiece. This avoids the problems of workpiece falling off or surface damage that are easily caused by a single material handling method, further ensuring the product processing quality. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a partial three-dimensional structural schematic diagram of the present invention.

[0017] Figure 3 This is a schematic diagram of the installation structure of the swing assembly of the present invention.

[0018] Figure 4 This is a schematic diagram of the installation structure of the spraying assembly of the present invention.

[0019] Figure 5 This is a schematic diagram of the installation structure of the liquid injection assembly of the present invention.

[0020] Figure 6 This is a three-dimensional structural diagram of the spraying assembly of the present invention.

[0021] The components in the attached diagram are labeled as follows: 1: Base plate, 2: Chassis, 3: Fixed base, 4: Guide shaft, 5: Male template, 6: Fixed seat, 7: Female template, 8: Fixed mold, 9: Moving mold, 10: Hydraulic cylinder, 11: Fixed frame, 12: Injection rod, 13: Mounting seat, 14: Swing assembly, 141: First rotating ring, 142: First arc frame, 143: Connecting plate, 144: First cylinder, 15: Material handling assembly, 151: Second cylinder, 152 153: Fixed plate; 154: Suction cup; 155: Double-headed cylinder; 16: Insert rod; 17: Air pump; 18: Spraying assembly; 19: Second rotating ring; 10: Second arc frame; 110: Third cylinder; 12: Rectangular cavity; 13: Columnar air cylinder; 14: Spray nozzle; 151: Liquid injection assembly; 152: Liquid tank; 163: Hanger; 174: Pump body; 18: Hose; 19: Guide plate; 20: Control panel; 21: Liquid collection frame. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0023] Example: Figures 1-6As shown, a die-casting apparatus for producing steering gear housings includes a base plate 1, a housing 2, a fixed base 3, a guide shaft 4, a male template 5, a fixed seat 6, a female template 7, a fixed mold 8, a moving mold 9, a hydraulic cylinder 10, a fixed frame 11, an injection rod 12, a mounting base 13, a swing assembly 14, a material handling assembly 15, a spraying assembly 16, and a liquid injection assembly 17. The housing 2 is mounted on the top of the base plate 1. Rectangular holes are opened on the left side of both the front and rear side walls of the housing 2. The fixed base 3 is located inside the housing 2 and has a rectangular hole on its left side. A male template 5 is provided, and a fixed seat 6 is provided on the right side of the fixed base 3. Guide shafts 4 are symmetrically arranged horizontally at the bottom and top of both the male template 5 and the fixed seat 6. Female templates 7 are slidably mounted on the four guide shafts 4. A hydraulic cylinder 10 is provided on the fixed seat 6. The telescopic rod of the hydraulic cylinder 10 is connected to the center of the right end face of the female template 7. A moving mold 9 is installed on the female template 7, and a fixed mold 8 is installed on the male template 5. When the male template 5 and female template 7 are closed, the moving mold 9 and the fixed mold 8 form the cavity of the steering gear housing. A fixing frame 11 is provided on the top left side of the base plate 1 for fixing... An injection rod 12 is installed on the frame 11, which is connected to the fixed mold 8. The base plate 1 is also equipped with a cooling system, injection system, and molten metal conveying mechanism for a horizontal die-casting machine of the same type as the fixed mold 8 and the moving mold 9. A mounting base 13 is located on the top left side of the fixed base 3. A swing assembly 14 is located behind the mounting base 13. The swing assembly 14 includes a first rotating ring 141, a first arc-shaped frame 142, a connecting plate 143, and a first cylinder 144. The first rotating ring 141 is rotatably mounted on the lower rear guide shaft 4. The rotating ring 141 and the lower rear guide shaft 4 are rotated using a deep groove ball bearing (model 6204). The inner ring of the bearing is interference-fitted with the guide shaft 4 (fit tolerance H7 / k6), and the outer ring of the bearing is transition-fitted with the inner wall of the first rotating ring 141 (fit tolerance H8 / f7). To prevent the first rotating ring 141 from moving axially along the guide shaft 4, an annular mounting groove (groove width 3mm, groove depth 1.5mm) is provided on both sides of the guide shaft (4) corresponding to the first rotating ring 141. The mounting holes in the groove are fitted with elastic retaining rings (model GB / T894).1-1986 (specification φ20), the inner side of the retaining ring fits against the end face of the outer ring of the bearing to form an axial limit. A first arc-shaped frame 142 is provided on the first rotating ring 141. A connecting plate 143 is provided on the upper front side of the first arc-shaped frame 142. A first cylinder 144 is rotatably provided on the top rear side of the mounting base 13. The telescopic rod of the first cylinder 144 is rotatably connected to the bottom of the first arc-shaped frame 142. A material picking assembly 15 is provided on the swing assembly 14. The material picking assembly 15 includes a second cylinder 151, a fixing plate 152, a suction cup 153, a double-headed cylinder 154, an insertion rod 155, and a vacuum pump 156. Four second cylinders 151 are provided on the front side of the connecting plate 143. A fixing rod is provided between the telescopic rods of the second cylinders 151. Plate 152 has a stepped hole (large hole diameter 50mm, small hole diameter 30mm, recessed platform depth 5mm) in the middle. The suction cup 153 is made of nitrile rubber, and its top is integrally formed with a circular flange (diameter 50mm, thickness 5mm). The flange is evenly fixed to the recessed platform of the stepped hole by hexagonal head screws. A double-headed cylinder 154 is set at the bottom of the suction cup 153 shell. Insert rods 155 are installed on the two telescopic rods of the double-headed cylinder 154. An air pump 156 is set on the fixed plate 152. The air suction interface (inner diameter 8mm) at the bottom of the suction cup 153 is connected to the air suction port of the air pump 156 through a PU tube (inner diameter 6mm, wall thickness 2mm). The material picking component 15 is located at the rear of the chassis 2. On the outside of the rectangular hole in the sidewall, a spraying assembly 16 is provided on the front side of the mounting base 13. The spraying assembly 16 includes a second rotating ring 161, a second arc-shaped frame 162, a third cylinder 163, a rectangular cavity 164, a cylindrical air cylinder 165, and a spray pipe 166. The second rotating ring 161 is rotatably mounted on the guide shaft 4 at the lower front side, and the installation method is the same as that of the first rotating ring 141. The second arc-shaped frame 162 is mounted on the second rotating ring 161. The third cylinder 163 is rotatably mounted on the top front side inside the mounting base 13. The telescopic rod of the third cylinder 163 is rotatably connected to the bottom of the second arc-shaped frame 162. A rectangular cavity 164 is provided on the upper rear side of the first arc-shaped frame 142. A cylindrical air cylinder is connected to the rectangular cavity 164 at intervals on the left and right sides. A cylindrical air cylinder 165 is equipped with a bendable nozzle 166. A liquid injection assembly 17 is located on the front side of the casing 2. The liquid injection assembly 17 includes a liquid tank 171, a bracket 172, a pump body 173, and a hose 174. The liquid tank 171 is located on the front side of the casing 2. The bracket 172 is located on the upper left side wall of the liquid tank 171. The pump body 173 is located on the upper left side wall of the liquid tank 171. Both the outlet and inlet ends of the pump body 173 are equipped with hoses 174. The outlet hose 174 is wound around the bracket 172, and its other end communicates with a rectangular cavity 164. The liquid hose 174 passes through the liquid tank 171, and its other end is located in the lower part of the liquid tank 171. The liquid injection assembly 17 is connected and cooperates with the spraying assembly 16.

[0024] like Figure 5As shown, it also includes a control panel 19. The control panel 19 is installed on the front side wall of the housing 2. The control panel 19 contains a controller. The controller is connected to the hydraulic cylinder 10, the first cylinder 144, the second cylinder 151, the double-headed cylinder 154, the third cylinder 163, the pump body 173 and other power components via wiring.

[0025] like Figure 2 and Figure 3 As shown, it also includes a guide plate 18 and a collection frame 20. Guide plates 18 are provided on both the left and right sides of the mounting base 13, and two collection frames 20 are provided on the upper left side of the fixed base 3, located below the guide plates 18. The guide plates 18 can guide the dripping release agent, which is then collected and processed through the collection frames 20.

[0026] When this device is needed, the operator controls the spraying assembly 16 via the control panel 19. The third cylinder 163 extends, thereby causing the lower part of the second arc frame 162 to swing forward. The second arc frame 162 rotates around the guide shaft 4 via the second rotating ring 161. The upper side of the second arc frame 162 causes the rectangular cavity 164 to swing backward. The rectangular cavity 164, the cylindrical air cylinder 165, and the spray nozzle 166 are located between the fixed mold 8 and the moving mold 9. Then, the third cylinder 163 is stopped, and the pump body 173 is started. The pump body 173 pumps the release agent from the liquid tank 171 into the rectangular cavity 164, and then sprays it out through the cylindrical air cylinder 165 and the spray nozzle 166. The release agent is sprayed out through the spray nozzle. The release agent is sprayed into the cavity between the fixed mold 8 and the moving mold 9. Because the nozzle 166 can be bent to adjust its angle, the release agent can be precisely sprayed into the cavity. After spraying, the third cylinder 163 is shortened, causing the second arc-shaped frame 162 to reset the rectangular cavity 164. Then, the controller on the control panel 19 controls the hydraulic cylinder 10 to work, causing the fixed mold 8 and the moving mold 9 to close. Simultaneously, the cooling system is activated to preheat the mold to a suitable temperature, typically 150-250℃. Then, the injection system and molten metal conveying mechanism of this device inject the liquefied aluminum molten metal flowing from the melting furnace into the cavity at high speed. The cooling system cools it. After the molten aluminum solidifies, the injection rod... 12. During the return stroke, the hydraulic cylinder 10 drives the mother mold 7 and the moving mold 9 to reset. The controller of the control panel 19 controls the first cylinder 144 to start. The first cylinder 144 extends, and the first arc frame 142 swings forward around the first rotating ring 141. The connecting plate 143 drives the material picking assembly 15 to be positioned between the fixed mold 8 and the moving mold 9. The second cylinder 151 is started to extend, and the second cylinder 151 drives the fixed plate 152 and the suction cup 153 to move to the left. The suction cup 153 adheres to the steering gear housing. The air pump 156 is started to extract the gas in the suction cup 153, thereby adsorbing the steering gear housing. At the same time, the double-headed cylinder 154 is started to work. The lifting rod of the double-headed cylinder 154 drives the... The insertion rod 155 moves backward and is inserted into the round holes on both sides of the steering gear housing. At this time, the controller controls the second cylinder 151 to shorten, which drives the suction cup 153 to reset, thereby causing the steering gear housing to detach from the fixed mold 8. Then, the controller controls the first cylinder 144 to shorten and the third cylinder 163 to extend, causing the first arc frame 142 to swing backward around the first rotating ring 141. The connecting plate 143 drives the material picking assembly 15 to swing to the outside of the machine box 2. The controller controls the vacuum pump 156 to work and pump in gas, so that the suction cup 153 is no longer in a negative pressure state. The controller controls the double-headed cylinder 154 to reset, causing the insertion rod 155 to detach from the steering gear housing, so that the steering gear housing can be removed for the next step of processing. The extension of the third cylinder 163 can drive the spraying assembly 16 to be positioned between the fixed mold 8 and the moving mold 9 again, and spray the release agent again to prepare for the next die casting operation. The guide plate 18 can guide the dripping release agent and collect it through the liquid collection frame 20.

[0027] Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that various changes or modifications can be made to the invention without departing from the principles and spirit of the invention as defined by the claims. Therefore, the detailed description of the embodiments in this disclosure is for illustrative purposes only and is not intended to limit the invention; rather, the scope of protection is defined by the content of the claims.

Claims

1. A die-casting apparatus for producing steering gear housings, comprising a base plate (1), a housing (2) disposed on the top of the base plate (1), rectangular holes being provided on the left side of the front and rear side walls of the housing (2), a fixed base (3) disposed on the top of the base plate (1), the fixed base (3) being located inside the housing (2), a male template (5) disposed on the left side of the fixed base (3), a fixed seat (6) disposed on the right side of the fixed base (3), guide shafts (4) being symmetrically arranged laterally on the lower and upper parts of the male template (5) and the fixed seat (6), and female templates (4) being slidably disposed on the four guide shafts (4). 7), a hydraulic cylinder (10) is provided on the fixed seat (6), the telescopic rod of the hydraulic cylinder (10) is connected to the center of the right end face of the female template (7), a moving mold (9) is installed on the female template (7), a fixed mold (8) is installed on the male template (5), when the male template (5) and the female template (7) are closed, the moving mold (9) and the fixed mold (8) form the cavity of the steering gear housing, a fixed frame (11) is provided on the top left side of the bottom plate (1), an injection rod (12) is provided on the fixed frame (11), and the injection rod (12) is connected to the fixed mold (8), characterized in that: It also includes a mounting base (13), the mounting base (3) is provided on the top left side of the fixed base (3), the mounting base (13) is provided on the rear side of the mounting base (13) and the swing component (14) is provided on the swing component (14) and the material picking component (15) is provided on the swing component (14) and the material picking component (15) is located outside the rectangular hole on the rear side wall of the chassis (2), the front side of the mounting base (13) is provided with a spraying component (16), the front side of the chassis (2) is provided with a liquid injection component (17), and the liquid injection component (17) is connected and cooperated with the spraying component (16); The swing assembly (14) includes a first rotating ring (141), the first rotating ring (141) is rotatably mounted on the guide shaft (4) at the lower rear side, the first rotating ring (141) is mounted on a first arc frame (142), the upper front side of the first arc frame (142) is mounted on a connecting plate (143), the top rear side of the mounting base (13) is rotatably mounted on a first cylinder (144), and the telescopic rod of the first cylinder (144) is rotatably connected to the bottom of the first arc frame (142); The material handling assembly (15) includes a second cylinder (151). Four second cylinders (151) are provided on the front side of the connecting plate (143). A fixing plate (152) is provided between the telescopic rods of the second cylinders (151). A suction cup (153) is embedded in the middle of the fixing plate (152). A double-headed cylinder (154) is provided at the bottom of the outer shell of the suction cup (153). Insert rods (155) are installed on the two telescopic rods of the double-headed cylinder (154). A vacuum pump (156) is provided on the fixing plate (152). The vacuum pump (156) is connected to the suction cup (153). The spraying assembly (16) includes a second rotating ring (161), and the second rotating ring (161) is rotatably mounted on the guide shaft (4) at the lower front side. The second rotating ring (161) is mounted on a second arc frame (162). The third cylinder (163) is rotatably mounted on the top front side inside the mounting base (13). The telescopic rod of the third cylinder (163) is rotatably connected to the bottom of the second arc frame (162). The first arc frame (142) is mounted on the upper rear side with a rectangular cavity (164). The rectangular cavity (164) is connected to the left and right sides with cylindrical air cylinders (165). The cylindrical air cylinders (165) are mounted with bendable spray pipes (166).

2. The die-casting apparatus for producing steering gear housings as described in claim 1, characterized in that: The liquid injection assembly (17) includes a liquid tank (171). The liquid tank (171) is provided on the front side of the housing (2). A bracket (172) is provided on the upper part of the left side wall of the liquid tank (171). A pump body (173) is provided on the upper part of the left side wall of the liquid tank (171). Both the outlet end and the inlet end of the pump body (173) are provided with hoses (174). The hose (174) at the outlet end is wound around the bracket (172), and the other end is connected to the rectangular cavity (164). The hose (174) at the inlet end passes through the liquid tank (171), and the other end is located in the lower part of the liquid tank (171).

3. The die-casting apparatus for producing steering gear housings as described in claim 2, characterized in that: It also includes a guide plate (18), and the guide plate (18) is provided on both the left and right sides of the mounting base (13).

4. The die-casting apparatus for producing steering gear housings as described in claim 3, characterized in that: It also includes a control panel (19), which is provided on the front side wall of the chassis (2). The control panel (19) contains a controller, which is connected to the hydraulic cylinder (10), the first cylinder (144), the second cylinder (151), the double-headed cylinder (154), the third cylinder (163), the pump body (173), and other power components via wiring.

5. The die-casting apparatus for producing steering gear housings as described in claim 4, characterized in that: It also includes a liquid collection frame (20), and two liquid collection frames (20) are provided on the upper left side of the fixed base (3). The liquid collection frames (20) are located below the guide plate (18).

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