Die-casting die for producing reduction gearbox body

Abstract

The utility model relates to a die-casting die for producing a reduction gearbox body, which comprises an upper die frame and a lower die frame, an upper die core and a lower die core are arranged between the upper die frame and the lower die frame, an upper die cavity is arranged at the lower end of the upper die core, an upper insert and a lower insert which are stacked up and down are obliquely embedded in the side edge of the upper die cavity, and a supporting leg concave forming part is arranged at the lower end of the lower insert. A round through hole is formed in the middle between the upper insert and the lower insert, a hole position rod horizontally and obliquely sliding is installed in the round through hole, a hole position oil cylinder connected with the hole position rod is installed at the front end of the upper die frame, long bolts are installed at the positions, located on the two sides of the upper insert, of the upper end of the upper die core respectively, and one ends of the long bolts penetrate through the upper insert from top to bottom to be connected with the lower insert. A lower die cavity is formed in the upper end of the lower die core, the lower die cavity and the upper die cavity are spliced to form a cavity, and a main cavity embedding column is arranged in the middle of the lower die cavity. According to the utility model, a splicing structure of the upper insert and the lower insert is designed and is matched with the hole position oil cylinder to control the hole position rod, so that the structural forming of the supporting legs, the sunken grooves and the through holes is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile reduction gear boxes, in particular to a die-casting mold for producing reduction gear boxes. Background Art

[0002] The motor of an automobile outputs power through a motor shaft. However, due to the high rotational speed of the motor shaft, it usually cannot be directly used to drive the automobile. Instead, it needs to be decelerated by a reduction gear box and then the power is output.

[0003] The reduction gear box body is an important component of the reduction gear box. As Figure 5 shown, the reduction gear box body includes a box body main body 7. A main chamber 29 is provided at the lower part of the box body main body 7. A support leg 31 and a side chamber 30 communicating with the main chamber 29 are provided on one side of the box body main body 7. A recessed groove 32 is formed in the middle of the upper end of the support leg 31, and a through hole 33 is provided on the side of the support leg 31. The structures of the support leg 31, the recessed groove 32 and the through hole 33 are relatively difficult to form, and corresponding die structures need to be designed to assist in forming to improve the product qualification rate. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a die-casting mold for producing a reduction gear box body. A splicing structure of an upper insert block and a lower insert block is designed, and a hole position rod is controlled by a hole position oil cylinder, so as to realize the forming of the structures of the support leg, the recessed groove and the through hole. The splicing structure of the upper insert block and the lower insert block reduces the difficulty of later maintenance, and only simple disassembly and assembly are required.

[0005] The technical solution adopted by the utility model to solve its technical problem is: to provide a die-casting mold for producing a reduction gear box body, which includes an upper die frame and a lower die frame. An upper die core and a lower die core stacked up and down are installed between the upper die frame and the lower die frame. An upper die cavity is formed at the lower end of the upper die core. An upper insert block and a lower insert block stacked up and down are obliquely embedded and installed on the side of the upper die cavity. A support leg recessed forming part is provided at the lower end of the lower insert block. A circular through hole is formed in the middle between the upper insert block and the lower insert block. A hole position rod sliding horizontally and obliquely is installed in the circular through hole. A hole position oil cylinder connected to the hole position rod is installed at the front end of the upper die frame. A long bolt is installed in each of the two sides of the upper die core above the upper insert block. One end of the long bolt passes through the upper insert block from top to bottom and is connected to the lower insert block. A lower die cavity is formed at the upper end of the lower die core. The lower die cavity and the upper die cavity are spliced to form a cavity. A main cavity insert column is provided in the middle of the lower die cavity. A side core-pulling device is installed at the upper end of the lower die frame on the right side of the lower die core.

[0006] As a supplement to the technical solution described in the utility model, a diverter cone is installed in the middle of the upper end of the lower mold frame in front of the lower mold core, a barrel is installed in the upper part of the upper mold frame and is sleeved outside the diverter cone, and a flow channel is provided at the lower end of the upper mold core between the barrel and the upper mold cavity, and one end of the flow channel is also connected to the recessed molding part of the support foot.

[0007] As a supplement to the technical solution described in the utility model, a socket is embedded in the side of the upper mold core, and a guide sleeve is arranged inside the upper mold core between the upper insert and the socket. The hole rod slides back and forth along the inner wall of the guide sleeve. One end of the hole rod passes through the hole rod, and the other end of the hole rod is connected to the piston rod of the hole cylinder through a coupling.

[0008] As a supplement to the technical solution described in the utility model, the side core pulling device includes a side cavity column, a slider seat and a core pulling cylinder. The upper end of the lower mold frame is located on the right side of the lower mold core and is equipped with a laterally sliding slider seat. One end of the slider seat is equipped with a side cavity column that is connected to the side of the main cavity column. The other end of the slider seat is connected to the core pulling cylinder installed on the right side of the lower mold frame.

[0009] As a supplement to the technical solution described in the utility model, a mold foot is installed on each side of the lower end of the lower mold frame, a top plate assembly is arranged between the two mold feet, and the top plate assembly is provided with a plurality of ejector rods inserted into the mold cavity.

[0010] As a supplement to the technical solution described in the utility model, a slag bag is provided in the middle of the upper end of the main cavity column.

[0011] Beneficial effects: The utility model relates to a die-casting mold for producing a reduction gearbox body. One end of the hole rod passes through the upper insert and the lower insert and is inserted into the upper mold cavity. The hole rod assists in forming the through hole, and the support foot recessed forming part at the lower part of the lower insert assists in forming the recessed groove. The splicing structure of the upper insert and the lower insert is designed. The hole rod is controlled by the hole oil cylinder to realize the structural forming of the support foot, the recessed groove and the through hole. The splicing structure of the upper insert and the lower insert reduces the difficulty of later maintenance, and only requires simple disassembly and assembly. The utility model also has the advantages of simple structure, easy use, and low production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 It is a structural schematic diagram of the upper mold frame and the upper mold core described in the utility model;

[0014] Figure 3 It is a structural schematic diagram of the lower mold frame and the lower mold core described in the utility model;

[0015] Figure 4 It is a schematic structural diagram of the lower insert block, card seat, hole position rod, upper insert block and hole position oil cylinder described in the present utility model;

[0016] Figure 5 It is a schematic structural diagram of the product produced by the present utility model.

[0017] Illustration: 1. Upper die frame, 2. Lower die frame, 3. Die feet, 4. Top plate assembly, 5. Ejector rod, 6. Side core-pulling device, 7. Box body main body, 8. Hole position oil cylinder, 9. Upper die core, 10. Upper die cavity, 11. Lower insert block, 12. Support foot recess forming part, 13. Runner, 14. Barrel, 15. Card seat, 16. Hole position rod, 17. Upper insert block, 18. Circular through hole, 19. Guide sleeve, 20. Coupling, 21. Lower die core, 22. Lower die cavity, 23. Dividing cone, 24. Main cavity insert column, 25. Scab, 26. Side cavity insert column, 27. Slide block seat, 28. Core-pulling oil cylinder, 29. Side cavity, 30. Side cavity, 31. Support foot, 32. Recess groove, 33. Through hole. Specific embodiments

[0018] The following further elaborates the present utility model in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present utility model and not to limit the scope of the present utility model. In addition, it should be understood that after reading the content taught by the present utility model, those skilled in the art can make various changes or modifications to the present utility model, and these equivalent forms also fall within the scope defined by the appended claims of this application.

[0019] The embodiment of the present utility model relates to a die-casting mold for producing a reduction gearbox housing. As Figures 1-5 shown, it includes an upper die frame 1 and a lower die frame 2. An upper die core 9 and a lower die core 21 stacked up and down are installed between the upper die frame 1 and the lower die frame 2. The lower end of the upper die core 9 is provided with an upper die cavity 10. The side of the upper die cavity 10 is obliquely embedded with an upper insert block 17 and a lower insert block 11 stacked up and down. The lower end of the lower insert block 11 is provided with a support foot recess forming part 12. A circular through hole 18 is opened in the middle between the upper insert block 17 and the lower insert block 11. A hole position rod 16 that slides horizontally and obliquely is installed in the circular through hole 18. The front end of the upper die frame 1 is installed with a hole position oil cylinder 8 connected to the hole position rod 16. One long bolt is installed in each of the two sides of the upper die core 9 above the upper insert block 17. One end of the long bolt passes through the upper insert block 17 from top to bottom and is connected to the lower insert block 11. The upper end of the lower die core 21 is provided with a lower die cavity 22. The lower die cavity 22 and the upper die cavity 10 are spliced to form a cavity. A main cavity insert column 24 is provided in the middle of the lower die cavity 22. A side core-pulling device 6 is installed on the upper end of the lower die frame 2 on the right side of the lower die core 21.

[0020] The lower mold frame 2 has a diverter cone 23 installed in the middle of the upper end in front of the lower mold core 21, and the upper mold frame 1 has a barrel 14 installed on the outside of the diverter cone 23. The upper mold core 9 has a flow channel 13 at the lower end between the barrel 14 and the upper mold cavity 10, and one end of the flow channel 13 is also connected to the support foot recessed molding portion 12.

[0021] A holder 15 is embedded in the side of the upper mold core 9, and a guide sleeve 19 is arranged inside the upper mold core 9 between the upper insert 17 and the holder 15. The hole rod 16 slides back and forth along the inner wall of the guide sleeve 19. One end of the hole rod 16 passes through the hole rod 16, and the other end of the hole rod 16 is connected to the piston rod of the hole cylinder 8 through a coupling 20.

[0022] The side core pulling device 6 includes a side cavity column 26, a slider seat 27 and a core pulling cylinder 28. The upper end of the lower mold frame 2 is located on the right side of the lower mold core 21 and is equipped with a slider seat 27 that slides laterally. One end of the slider seat 27 is equipped with a side cavity column 26 that is connected to the side of the main cavity column 24. The other end of the slider seat 27 is connected to the core pulling cylinder 28 installed on the right side of the lower mold frame 2.

[0023] When it is necessary to produce the reduction gear box, first insert the side cavity insert column 26 horizontally into the lower mold cavity 22, the side cavity insert column 26 and the main cavity insert column 24 are butted together, one end of the hole rod 16 passes through the upper insert block 17 and the lower insert block 11 and is inserted into the upper mold cavity 10, and the upper mold frame 1 and the upper mold core 9 are controlled to close with the lower mold frame 2 and the lower mold core 21, and the box body 7 is assisted by the mold cavity, the side cavity insert column 26 is used to assist in forming the side cavity 30, and the main cavity insert column 24 is used to assist in forming the main cavity. The chamber 29 is assisted by the hole rod 16 to form the through hole 33, and the support foot recessed forming part 12 at the lower part of the lower insert 11 is assisted to form the recessed groove 32. The splicing structure of the upper insert 17 and the lower insert 11 is designed, and the hole rod 16 is controlled by the hole cylinder 8 to realize the structural forming of the support foot 31, the recessed groove 32 and the through hole 33. The splicing structure of the upper insert 17 and the lower insert 11 reduces the difficulty of later maintenance, and only simple disassembly and assembly are required.

[0024] Afterwards, the molten metal enters the mold from the barrel 14, and is diverted by the diverter cone 23 to fill the mold cavity, and is maintained under pressure in the mold by the die-casting machine. After the product is formed, the hole position cylinder 8 is started first, and the hole position cylinder 15 controls the hole position rod 16 to move tilted outward, and the hole position rod 16 is separated from the formed through hole 33. Then the mold is opened, the upper mold frame 1 and the upper mold core 9 move up, and the core pulling cylinder 28 controls the side cavity column 26 to slide to the right, and the side cavity column 26 is separated from the side chamber 30. Then the top plate assembly 14 controls the ejector rod 5 to eject the product.

[0025] On both sides of the lower end of the lower die frame 2, a die foot 3 is installed respectively. Between the two die feet 3, a top plate assembly 4 is arranged. On the top plate assembly 4, a plurality of ejector rods 5 inserted into the cavity are provided.

[0026] In the middle of the upper end of the main cavity insert 24, a slag pocket 25 is provided. The setting of the slag pocket 25 reduces defects such as air bubbles at the top of the main cavity 29.

[0027] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0028] For the convenience of description, spatial relative terms such as "above...", "above...", "on the upper surface of...", "above" can be used here to describe the spatial positional relationship between a device or feature shown in the figure and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation except the orientation described in the figure for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "under other devices or structures" afterwards. Thus, the exemplary term "above..." can include two orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding explanations are made for the spatial relative descriptions used here.

[0029] In addition, it should be noted that the use of words such as "first", "second" to limit the components is only for the convenience of distinguishing the corresponding components. Without otherwise stating, the above words have no special meanings. Therefore, it cannot be understood as a limitation on the protection scope of the present invention.

[0030] The above has introduced in detail a die-casting mold for producing a reduction gearbox provided by the present application. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A die-casting mold for producing a reduction gearbox, comprising an upper mold frame (1) and a lower mold frame (2), wherein an upper mold core (9) and a lower mold core (21) stacked up and down are installed between the upper mold frame (1) and the lower mold frame (2), characterized in that: The upper mold core (9) is provided with an upper mold cavity (10) at the lower end, and an upper insert (17) and a lower insert (11) stacked up and down are obliquely embedded in the side of the upper mold cavity (10), and a support foot recessed molding portion (12) is provided at the lower end of the lower insert (11), and a circular through hole (18) is provided in the middle between the upper insert (17) and the lower insert (11), and a hole rod (16) that slides horizontally and obliquely is installed in the circular through hole (18), and a hole connected to the hole rod (16) is installed at the front end of the upper mold frame (1). The upper mold core (9) is located at the upper insert (17) and is provided with a long bolt on both sides thereof. One end of the long bolt passes through the upper insert (17) from top to bottom and is connected to the lower insert (11). The upper end of the lower mold core (21) is provided with a lower mold cavity (22). The lower mold cavity (22) is spliced ​​with the upper mold cavity (10) to form a mold cavity. A main cavity column (24) is provided in the middle of the lower mold cavity (22). The upper end of the lower mold frame (2) is located at the right side of the lower mold core (21) and is provided with a side core pulling device (6).

2. A die-casting mold for producing a reduction gearbox according to claim 1, characterized in that: The upper end of the lower mold frame (2) is provided with a diverter cone (23) in the middle part in front of the lower mold core (21), and the upper part of the upper mold frame (1) is provided with a barrel (14) sleeved outside the diverter cone (23). The lower end of the upper mold core (9) is provided with a flow channel (13) between the barrel (14) and the upper mold cavity (10), and one end of the flow channel (13) is also connected to the support foot recessed molding part (12).

3. The die-casting mold for producing a reduction gearbox according to claim 1, characterized in that: A holder (15) is embedded in the side of the upper mold core (9), and a guide sleeve (19) is arranged inside the upper mold core (9) between the upper insert (17) and the holder (15). The hole rod (16) slides back and forth along the inner wall of the guide sleeve (19). One end of the hole rod (16) passes through the hole rod (16), and the other end of the hole rod (16) is connected to the piston rod of the hole cylinder (8) through a coupling (20).

4. The die-casting mold for producing a reduction gearbox according to claim 1, characterized in that: The side core pulling device (6) comprises a side cavity column (26), a slider seat (27) and a core pulling cylinder (28); the upper end of the lower mold frame (2) is located on the right side of the lower mold core (21) and is equipped with a slider seat (27) that slides laterally; one end of the slider seat (27) is equipped with a side cavity column (26) that is connected to the side of the main cavity column (24); the other end of the slider seat (27) is connected to the core pulling cylinder (28) installed on the right side of the lower mold frame (2).

5. The die-casting mold for producing a reduction gearbox according to claim 1, characterized in that: A mold foot (3) is installed on each side of the lower end of the lower mold frame (2), a top plate assembly (4) is arranged between the two mold feet (3), and a plurality of ejector rods (5) inserted into the mold cavity are arranged on the top plate assembly (4).

6. The die-casting mold for producing a reduction gearbox according to claim 1, characterized in that: A slag bag (25) is provided in the middle of the upper end of the main cavity column (24).

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