Die-casting forming machine for automobile parts and using method of die-casting forming machine

Abstract

The invention discloses an automobile part die-casting forming machine and a using method thereof. The die-casting forming machine comprises an outer frame, a lower die assembly arranged at the bottom of the outer frame and an upper die assembly arranged at the top of the outer frame. The lower die assembly comprises a containing groove formed in the outer frame, a lower die movably arranged on the inner side of the containing groove and an ejection piece arranged at the bottom of the lower die, and the ejection piece is used for ejecting out the formed die casting. The ejection part is arranged, after the upper die and the lower die are closed, the ejection part moves to the bottom plate through cooperation of first strip-shaped teeth, a gear set and second strip-shaped teeth, the forming effect of a die casting is prevented from being affected, and after the upper die and the lower die are separated, resilience force of an elastic telescopic rod and a spring is matched with the gear set for transmission; thrust is provided for the ejection piece to eject out the die casting, power equipment is not needed, and the production cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical fields of automobiles and non-ferrous metal casting, and particularly to a die-casting machine for automobile parts and its usage method. Background Art

[0002] For die-casting of automobile parts, a die-casting machine is generally used to perform die-casting. The non-ferrous metal blank is placed in the mold for cold die-casting. After die-casting and forming by the existing die-casting machine, the die-casting part is easily embedded in the mold and difficult to take out. Generally, tools are used to pry out the die-casting part, or power equipment is used to eject the die-casting part. Using tools is likely to damage the die-casting part and the mold, so tools are generally not used. However, using power equipment requires cooperation with a control system and a power supply for driving, increasing production costs. Therefore, the present invention provides a die-casting machine for automobile parts and its usage method to solve the above problems. Summary of the Invention

[0003] The purpose of the present invention is to provide a die-casting machine for automobile parts and its usage method to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A die-casting machine for automobile parts, comprising an outer frame, a lower die assembly arranged at the bottom of the outer frame, and an upper die assembly arranged at the top of the outer frame; The lower die assembly includes a placement groove installed in the outer frame, a lower die movably arranged inside the placement groove, and an ejector arranged at the bottom of the lower die, and the ejector is used to eject the formed die-casting part; The upper die assembly includes an upper die movably arranged directly above the lower die and a pusher, the pusher is installed on the outer frame, and the output end of the pusher is connected to the upper die.

[0005] As a preferred solution of the present invention, wherein: the ejector includes a bottom plate slidably arranged in the placement groove and an ejector seat inserted through the middle of the bottom plate; Elastic telescopic rods are arranged around the bottom of the bottom plate, one end of the elastic telescopic rod is connected to the bottom plate, the other end of the elastic telescopic rod is connected to the outer frame, baffles are arranged on the front and rear sides of the ejector seat, guide rods are arranged at the bottom of the baffles, springs are sleeved outside the guide rods, and the bottom ends of the guide rods penetrate the outer frame, and the springs are located between the baffles and the outer frame.

[0006] As a preferred solution of the present invention, wherein: the ejector further includes gear sets symmetrically arranged on both sides of the bottom of the bottom plate, first strip teeth arranged on both sides inside the placement groove, and second strip teeth arranged on the left and right sides of the ejector seat, and the gear sets are respectively meshed with the first strip teeth and the second strip teeth.

[0007] As a preferred embodiment of the present invention, wherein: the gear set includes a driving gear, a large transmission gear, a small transmission gear and a driven gear, the large transmission gear and the small transmission gear are coaxially arranged, the driving gear meshes with the first strip tooth and the large transmission gear respectively, and the driven gear meshes with the second strip tooth and the small transmission gear respectively; A bearing shaft is inserted through the middle parts of the driving gear, the large transmission gear, the small transmission gear and the driven gear, and bearing plates are connected to both ends of the bearing shaft, and the top ends of the bearing plates are connected to the bottom plate.

[0008] As a preferred embodiment of the present invention, wherein: the driving gear, the large transmission gear and the driven gear are of the same size, the small transmission gear has the same module as the large transmission gear, and the tooth number ratio of the small transmission gear to the large transmission gear is 2:1.

[0009] As a preferred embodiment of the present invention, wherein: positioning shafts are arranged around the top of the bottom plate, positioning grooves matching the positioning shafts are arranged around the lower die, the lower die is placed on the top of the bottom plate, and the positioning shafts of the bottom plate are inserted into the positioning grooves of the lower die; Grooves are arranged on both sides of the bottom plate, the lower die and the upper die, and the grooves are on the same side as the first strip tooth.

[0010] As a preferred embodiment of the present invention, wherein: the ejector seat is composed of a square plate and a square shell, the baffle and the second strip tooth are arranged outside the square shell, a square hole matching the square plate is arranged in the middle of the bottom plate, and the ejector seat is arranged in the square hole of the bottom plate.

[0011] As a preferred embodiment of the present invention, wherein: the pressing member is a hydraulic rod, the hydraulic rod is installed on the outer frame, and the output shaft of the hydraulic rod penetrates through the outer frame and is connected to the upper die.

[0012] A method for using a die-casting molding machine for automobile parts includes the following steps: S1. Place the blank in the lower die, start the hydraulic rod, and make the output end of the hydraulic rod push the upper die to move down until the upper die contacts the blank and pushes the lower die to move down. When the lower die moves, the lower die pushes the bottom plate to move and compress the elastic telescopic rod; S2. When the bottom plate moves, the bottom plate drives the gear set to move. The driving gear cooperates with the first strip tooth and rotates clockwise during the downward movement. The driving gear drives the large transmission gear and the small transmission gear to rotate counterclockwise, and the small transmission gear drives the driven gear to rotate clockwise. The driven gear cooperates with the second strip tooth to make the ejector seat move down and compress the spring; S3. The hydraulic rod continues to push the upper mold to move until the square plate at the top of the ejection seat is inserted into the square hole of the bottom plate. The elastic telescopic rod contracts to the shortest size and supports the bottom plate. The upper mold and the lower mold are closed to die-cast the blank. S4. After the blank is die-cast, the upper mold is lifted by the hydraulic rod. The elastic telescopic rod rebounds and pushes the bottom plate and the lower mold to move upward. Through the cooperation of the first strip teeth, the gear set and the second strip teeth transmission, and the resilience of the spring, the ejection seat moves upward to eject the die-cast part.

[0013] The present invention is provided with an ejection member. After the upper mold and the lower mold are closed, the ejection member moves to the bottom plate through the cooperation of the first strip teeth, the gear set and the second strip teeth, avoiding affecting the forming effect of the die-cast part. After the upper mold and the lower mold are separated, the resilience of the elastic telescopic rod and the spring cooperates with the gear set transmission to provide a thrust for the ejection member to eject the die-cast part, eliminating the need to use power equipment and reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the structure of the lower mold and the bottom plate of the present invention; Figure 3 is a schematic diagram of the internal structure of the lower mold assembly of the present invention; Figure 4 For the present invention Figure 3 is an enlarged schematic diagram of the structure at A in the present invention.

[0015] In the figure: 1. Outer frame; 2. Lower mold assembly; 21. Placing groove; 22. Lower mold; 23. Ejection member; 231. Bottom plate; 2311. Positioning shaft; 232. Ejection seat; 233. Elastic telescopic rod; 234. Baffle; 235. Guide rod; 236. Spring; 237. Gear set; 2371. Driving gear; 2372. Large transmission gear; 2373. Small transmission gear; 2374. Driven gear; 2375. Bearing shaft; 2376. Bearing plate; 238. First strip teeth; 239. Second strip teeth; 3. Upper mold assembly; 31. Upper mold; 32. Hydraulic rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0017] Please refer to Figures 1-4, An automotive parts die-casting machine, comprising an outer frame 1, a lower die assembly 2 provided at the bottom of the outer frame 1, and an upper die assembly 3 provided at the top of the outer frame 1; The lower die assembly 2 includes a placement groove 21 installed inside the outer frame 1, a lower die 22 movably arranged inside the placement groove 21, and an ejector 23 provided at the bottom of the lower die 22, and the ejector 23 is used to eject the formed die-casting part; The upper die assembly 3 includes an upper die 31 movably arranged directly above the lower die 22 and a pressing member. The pressing member is installed on the outer frame 1, and the output end of the pressing member is connected to the upper die 31.

[0018] In this embodiment, the ejector 23 includes a bottom plate 231 slidably arranged in the placement groove 21 and an ejector seat 232 inserted through the middle of the bottom plate 231; Elastic telescopic rods 233 are arranged around the bottom of the bottom plate 231. One end of the elastic telescopic rod 233 is connected to the bottom plate 231, and the other end of the elastic telescopic rod 233 is connected to the outer frame 1. Baffles 234 are arranged on the front and rear sides of the ejector seat 232. A guide rod 235 is arranged at the bottom of the baffle 234. A spring 236 is sleeved outside the guide rod 235. The bottom end of the guide rod 235 penetrates the outer frame 1. The spring 236 is located between the baffle 234 and the outer frame 1. Specifically, the guide rod 235 is of a round rod structure. The inner diameter of the spring 236 is larger than the diameter of the guide rod 235. Round holes are provided in the outer frame 1 below the two guide rods 235. One end of the guide rod 235 is inserted through the through hole provided in the outer frame 1; Specifically, the ejector 23 further includes gear sets 237 symmetrically arranged on both sides of the bottom of the bottom plate 231, first strip teeth 238 arranged on both sides inside the placement groove 21, and second strip teeth 239 arranged on the left and right sides of the ejector seat 232. The gear sets 237 are respectively meshed with the first strip teeth 238 and the second strip teeth 239; Among them, the gear set 237 includes a driving gear 2371, a large transmission gear 2372, a small transmission gear 2373, and a driven gear 2374. The large transmission gear 2372 and the small transmission gear 2373 are coaxially arranged. The driving gear 2371 is respectively meshed with the first strip teeth 238 and the large transmission gear 2372. The driven gear 2374 is respectively meshed with the second strip teeth 239 and the small transmission gear 2373; Load-bearing shafts 2375 are inserted through the middle of the driving gear 2371, the large transmission gear 2372, the small transmission gear 2373, and the driven gear 2374. Both ends of the load-bearing shaft 2375 are connected with load-bearing plates 2376. The top ends of the load-bearing plates 2376 are connected to the bottom plate 231; Specifically, the driving gear 2371, the large transmission gear 2372 and the driven gear 2374 are of the same size. The small transmission gear 2373 has the same module as the large transmission gear 2372, and the tooth ratio of the small transmission gear 2373 to the large transmission gear 2372 is 2:1. It should be noted that the number of the small transmission gears 2373 is two, which are respectively located on both sides of the large transmission gear 2372. The small transmission gears 2373 and the large transmission gear 2372 rotate coaxially and synchronously. The number of the driven gears 2374 is two, which are respectively meshed with the small transmission gears 2373. The number of the second strip teeth 239 arranged on one side of the ejection seat 232 is two, which are respectively meshed with the two driven gears 2374. The driving gear 2371 cooperates with the first strip teeth 238 to provide power for the driven gear 2374. The rotation speed of the driven gear 2374 is reduced and the torque force is increased through the large transmission gear 2372 and the small transmission gear 2373.

[0019] In this embodiment, positioning shafts 2311 are arranged around the top of the bottom plate 231, and positioning grooves matched with the positioning shafts 2311 are arranged around the lower die 22. The lower die 22 is placed on the top of the bottom plate 231, and the positioning shafts 2311 of the bottom plate 231 are inserted into the positioning grooves of the lower die 22, so as to facilitate the replacement of different lower dies 22. Grooves are arranged on both sides of the bottom plate 231, the lower die 22 and the upper die 31, and the grooves are on the same side as the first strip teeth 238, so that the bottom plate 231 and the lower die 22 are not blocked by the first strip teeth 238 when moving downwards.

[0020] In this embodiment, the ejection seat 232 is composed of a square plate and a square shell. The baffle 234 and the second strip teeth 239 are arranged outside the square shell. A square hole matched with the square plate is arranged in the middle of the bottom plate 231, and the ejection seat 232 is arranged in the square hole of the bottom plate 231.

[0021] In this embodiment, the pressing member is a hydraulic rod 32. The hydraulic rod 32 is installed on the outer frame 1, and the output shaft of the hydraulic rod 32 penetrates through the outer frame 1 and is connected to the upper die 31.

[0022] The using method of the die-casting forming machine for automobile parts of the present invention includes the following steps: S1. Place the blank in the lower die 22, start the hydraulic rod 32, and make the output end of the hydraulic rod 32 push the upper die 31 to move downwards until the upper die 31 contacts the blank and pushes the lower die 22 to move downwards. When the lower die 22 moves, the lower die 22 pushes the bottom plate 231 to move and compress the elastic telescopic rod 233. S2. When the bottom plate 231 moves, the bottom plate 231 drives the gear set 237 to move. The driving gear 2371 rotates clockwise during the downward movement in cooperation with the first strip tooth 238. The driving gear 2371 drives the large transmission gear 2372 and the small transmission gear 2373 to rotate counterclockwise, and the small transmission gear 2373 drives the driven gear 2374 to rotate clockwise. The driven gear 2374 cooperates with the second strip tooth 239 to move the ejection seat 232 downward and compress the spring 236; S3. The hydraulic rod 32 continues to push the upper mold 31 to move until the square plate at the top of the ejection seat 232 is inserted into the square hole of the bottom plate 231. The elastic telescopic rod 233 contracts to the shortest dimension and supports the bottom plate 231. The upper mold 31 and the lower mold 22 are closed to die-cast the blank; S4. After the blank is die-cast, the upper mold 31 is lifted by the hydraulic rod 32. The elastic telescopic rod 233 rebounds and pushes the bottom plate 231 and the lower mold 22 to move upward. Through the transmission of the first strip tooth 238 in cooperation with the gear set 237 and the second strip tooth 239, and the resilience of the spring 236, the ejection seat 232 moves upward to eject the die-casting part.

[0023] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A die-casting forming machine for automobile parts, characterized in that: It includes an outer frame (1), a lower die assembly (2) provided at the bottom of the outer frame (1), and an upper die assembly (3) provided at the top of the outer frame (1); The lower die assembly (2) includes a placement groove (21) installed inside the outer frame (1), a lower die (22) movably arranged inside the placement groove (21), and an ejector (23) provided at the bottom of the lower die (22), and the ejector (23) is used to eject the formed die-casting part; The upper die assembly (3) includes an upper die (31) movably arranged directly above the lower die (22) and a pushing member, the pushing member is installed on the outer frame (1), and the output end of the pushing member is connected to the upper die (31).

2. The die-casting forming machine for automobile parts according to claim 1, wherein: The ejector (23) includes a bottom plate (231) slidably arranged in the placement groove (21) and an ejector seat (232) inserted through the middle of the bottom plate (231); Elastic telescopic rods (233) are arranged around the bottom of the bottom plate (231), one end of the elastic telescopic rod (233) is connected to the bottom plate (231), the other end of the elastic telescopic rod (233) is connected to the outer frame (1), baffles (234) are arranged on the front and rear sides of the ejector seat (232), a guide rod (235) is arranged at the bottom of the baffle (234), a spring (236) is sleeved outside the guide rod (235), the bottom end of the guide rod (235) penetrates the outer frame (1), and the spring (236) is located between the baffle (234) and the outer frame (1).

3. The die-casting molding machine for automotive parts according to claim 2, characterized in that: The ejector (23) further includes gear sets (237) symmetrically arranged on both sides of the bottom of the bottom plate (231), first strip teeth (238) arranged on both sides inside the placement groove (21), and second strip teeth (239) arranged on the left and right sides of the ejector seat (232), and the gear sets (237) are respectively meshed with the first strip teeth (238) and the second strip teeth (239).

4. The die-casting molding machine for automotive parts according to claim 3, characterized in that: The gear set (237) includes a driving gear (2371), a large transmission gear (2372), a small transmission gear (2373), and a driven gear (2374), the large transmission gear (2372) and the small transmission gear (2373) are coaxially arranged, the driving gear (2371) is respectively meshed with the first strip teeth (238) and the large transmission gear (2372), and the driven gear (2374) is respectively meshed with the second strip teeth (239) and the small transmission gear (2373); A bearing shaft (2375) is inserted through the middle of the driving gear (2371), the large transmission gear (2372), the small transmission gear (2373), and the driven gear (2374), and bearing plates (2376) are connected to both ends of the bearing shaft (2375), and the top ends of the bearing plates (2376) are connected to the bottom plate (231).

5. The die-casting forming machine for automotive parts according to claim 4, wherein: The driving gear (2371), the large transmission gear (2372), and the driven gear (2374) are of the same size, the small transmission gear (2373) has the same module as the large transmission gear (2372), and the tooth number ratio of the small transmission gear (2373) to the large transmission gear (2372) is 2:

1.

6. The die-casting molding machine for automotive parts according to claim 5, wherein: Positioning shafts (2311) are provided around the top of the bottom plate (231). Positioning grooves that cooperate with the positioning shafts (2311) are provided around the lower mold (22). The lower mold (22) is placed on the top of the bottom plate (231), and the positioning shafts (2311) of the bottom plate (231) are inserted into the positioning grooves of the lower mold (22). Grooves are provided on both sides of the bottom plate (231), the lower mold (22), and the upper mold (31). These grooves are on the same side as the first strip teeth (238).

7. The die-casting molding machine for automotive parts according to claim 6, wherein: The ejector seat (232) is composed of a square plate and a square shell. The baffle (234) and the second strip teeth (239) are provided outside the square shell. A square hole that cooperates with the square plate is provided in the middle of the bottom plate (231). The ejector seat (232) is arranged in the square hole of the bottom plate (231).

8. The die-casting molding machine for automotive parts according to claim 7, characterized in that: The pressing member is a hydraulic rod (32). The hydraulic rod (32) is installed on the outer frame (1). The output shaft of the hydraulic rod (32) penetrates the outer frame (1) and is connected to the upper mold (31).

9. The method of using the die-casting machine for automotive parts according to claim 8, characterized in that: It includes the following steps: S1. Place the blank in the lower mold (22), start the hydraulic rod (32), and make the output end of the hydraulic rod (32) push the upper mold (31) downward until the upper mold (31) contacts the blank and pushes the lower mold (22) downward. When the lower mold (22) moves, the lower mold (22) pushes the bottom plate (231) to move and compress the elastic telescopic rod (233). S2. When the bottom plate (231) moves, the bottom plate (231) drives the gear set (237) to move. The driving gear (2371) rotates clockwise during the downward movement in cooperation with the first strip teeth (238). The driving gear (2371) drives the large transmission gear (2372) and the small transmission gear (2373) to rotate counterclockwise. The small transmission gear (2373) drives the driven gear (2374) to rotate clockwise. The driven gear (2374) cooperates with the second strip teeth (239) to make the ejector seat (232) move downward and compress the spring (236). S3. The hydraulic rod (32) continues to push the upper mold (31) to move until the square plate at the top of the ejector seat (232) is stuck into the square hole of the bottom plate (231). The elastic telescopic rod (233) shrinks to the shortest size and supports the bottom plate (231). The upper mold (31) and the lower mold (22) are closed to press the blank into a mold. S4. After the blank is pressed into a mold, the upper mold (31) is lifted by the hydraulic rod (32). The elastic telescopic rod (233) rebounds and pushes the bottom plate (231) and the lower mold (22) upward. Through the transmission of the first strip teeth (238) in cooperation with the gear set (237) and the second strip teeth (239), and the resilience of the spring (236), the ejector seat (232) moves upward to eject the castings.

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