Die-casting forming die structure for rear cover of lightweight speed reducer

Abstract

The utility model provides a light-weight reducer rear cover die-casting forming die structure, which comprises a lower die and an upper die, the lower die is provided with a lower cavity, the upper die is provided with an upper cavity, a total cavity is formed between the upper cavity and the lower cavity, the total cavity is connected with an exhaust structure, the lower cavity is provided with an inner concave part, and the lower concave part is provided with an exhaust structure. The upper mold is provided with a pouring opening, the lower mold is provided with a main runner, a first runner and a second runner, one end of the main runner is communicated with the pouring opening, one end of the first runner is communicated with the main runner, the other end of the first runner is communicated with the lower cavity through a first connecting opening, one end of the second runner is communicated with the main runner, and the other end of the second runner is communicated with the lower cavity through a second connecting opening. And the other end of the second runner is communicated with the lower cavity through the second connecting port, and the first connecting port and the second connecting port face the inward concave position, so that the purpose of improving the production quality is achieved.

Description

Technical Field

[0001] The utility model relates to a mold, and in particular to a die-casting mold structure for a lightweight reducer rear cover. Background Technique

[0002] A mold is various molds and tools used in industrial production to obtain required products by methods such as injection molding, blow molding, extrusion, die casting, or forging, smelting, stamping, etc.

[0003] Currently, a Chinese patent with the authorization announcement number CN214562363U discloses a mold pouring device, including a mold pouring box. A cover is provided on the top of the mold pouring box. The center of the upper end of the cover is fixedly welded with a pouring port. A main switch is provided on the right front side of the pouring port and is fixed on the cover by screws. A pouring liquid level indicator is provided on the right rear side of the main switch and penetrates and is fixed on the cover. A pouring liquid level indicator switch is provided on the right rear side of the pouring liquid level indicator and is fixed on the cover by screws. An expansion rod control switch is provided below the pouring liquid level indicator switch and is fixed on the cover by screws. Support columns are fixedly welded at the four corners of the cover. The bottom of the support columns is fixedly welded with a base. Slide rails are fixedly welded on the left and right sides above the base. Four sliders are provided above each slide rail and are sleeved on the four corners of the bottom of the mold pouring box; this mold pouring device has the advantages of reducing mold defects and waste of pouring liquid, reducing labor consumption, and being safe and convenient.

[0004] However, when pouring a lightweight reducer rear cover 100 as shown in the Figure 1 accompanying figure, since there is a relatively long protrusion 101 in the middle of the lightweight reducer rear cover 100, in order to facilitate exhaust, the pouring port is usually located below the cavity. After the pouring liquid enters the cavity, the concave part corresponding to the protrusion 101 is often not filled, thus affecting the production quality. Content of the Utility Model

[0005] In view of this, the purpose of the utility model is to provide a die-casting mold structure for a lightweight reducer rear cover to achieve the purpose of improving production quality.

[0006] To solve the above technical problems, the technical solution of the present utility model is: a die-casting forming die structure for a lightweight reducer rear cover, including a lower die and an upper die. The lower die is provided with a lower cavity, and the upper die is provided with an upper cavity. A total cavity is formed between the upper cavity and the lower cavity. The total cavity is connected with an exhaust structure. The lower cavity is provided with a concave portion. The upper die is provided with a pouring port. The lower die is provided with a main runner, a first runner and a second runner. One end of the main runner is communicated with the pouring port. One end of the first runner is communicated with the main runner, and the other end of the first runner is communicated with the lower cavity through a first connection port. One end of the second runner is communicated with the main runner, and the other end of the second runner is communicated with the lower cavity through a second connection port. Both the first connection port and the second connection port face the concave portion.

[0007] To implement the above technical solution, the pouring liquid is injected into the main runner from the pouring port, and then injected into the total cavity along the first runner and the second runner. Since the first connection port and the second connection port face the concave portion, the pouring liquid can be first injected into the concave portion, and then the pouring liquid fills the total cavity. The air in the total cavity is discharged from the exhaust structure, so as to achieve the purpose of improving the production quality.

[0008] As a preferred solution of the present utility model, the lower die is provided with a blanking cavity, the upper die is provided with a feeding cavity corresponding to the blanking cavity, and the blanking cavity is communicated with the lower cavity through a connection channel.

[0009] To implement the above technical solution, a small amount of waste residue will remain in the total cavity. After the pouring liquid is injected into the total cavity, the waste residue will be pushed into the feeding cavity and the blanking cavity to further improve the production quality.

[0010] As a preferred solution of the present utility model, it further includes a core-pulling mechanism and a power mechanism. The power mechanism is connected to the lower die, and the core-pulling mechanism is connected to the power mechanism and penetrates into the total cavity.

[0011] To implement the above technical solution, when the core-pulling mechanism is pulled out from the total cavity, an installation hole can be formed on the lightweight reducer rear cover, so as to eliminate the subsequent process of drilling holes in the lightweight reducer rear cover and improve the production efficiency.

[0012] As a preferred solution of the present utility model, the upper die is provided with an auxiliary cavity, the power mechanism is provided with a connection groove, the auxiliary cavity corresponds to the connection groove, the lower die is provided with a slag discharge channel communicated with the auxiliary cavity, and the slag discharge channel is communicated with the exhaust structure through a guiding groove. The guiding groove is opened on the upper die.

[0013] To implement the above technical solution, a small amount of waste residue is pushed into the auxiliary cavity by the pouring liquid. The air and a small amount of waste residue enter the exhaust structure along the slag discharge channel and the guiding groove. The waste residue remains in the exhaust structure, and the air passes through the exhaust structure.

[0014] As a preferred embodiment of the present utility model, the exhaust structure includes a lower exhaust block and an upper exhaust block. The lower exhaust block is fixedly connected to the lower mold, and the upper exhaust block is fixed to the upper mold. A plurality of triangular protrusions are connected to one side of the upper exhaust block facing the lower exhaust block. A plurality of triangular grooves are formed on the lower exhaust block. The triangular protrusions are located within the triangular grooves, and there is a gap between the triangular protrusions and the triangular grooves.

[0015] Implementing the above technical solution, the gap is wavy, so that the waste residue remains in the triangular groove, and air can pass through the gap and be discharged to improve the exhaust effect.

[0016] As a preferred embodiment of the present utility model, the distance of the gap gradually decreases in the direction away from the total cavity.

[0017] Implementing the above technical solution, the waste residue cannot pass through the gap.

[0018] As a preferred embodiment of the present utility model, the lower mold is provided with a lower communication groove, and the upper mold is provided with an upper communication groove. One end of the lower communication groove is communicated with the lower cavity, the other end of the lower communication groove is communicated with the upper communication groove, and the upper communication groove is communicated with the lower exhaust block.

[0019] Implementing the above technical solution, the pouring liquid is injected into the total cavity, and air enters the upper communication groove from the lower communication groove and then is injected into the lower exhaust block from the upper communication groove, thereby achieving the exhaust effect and improving the exhaust efficiency.

[0020] As a preferred embodiment of the present utility model, a partition is fixedly connected to the lower exhaust block. A pouring area is formed between the partition and the triangular groove. The guiding groove, the upper communication groove are communicated with the pouring area.

[0021] Implementing the above technical solution, the utilization rate of the lower exhaust block is improved. When the guiding groove or the upper communication groove is blocked, the upper communication groove or the guiding groove can achieve the exhaust function and improve the practicability.

[0022] As a preferred embodiment of the present utility model, both the first flow channel and the second flow channel have two. A storage area is formed between the first flow channel and the second flow channel and between the two second flow channels. A blanking cavity is provided in the storage area.

[0023] Implementing the above technical solution, the pouring efficiency is improved. At the same time, the waste residue in the total cavity is fully introduced into the blanking cavity to improve the production quality. Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram showing a lightweight reducer rear cover;

[0025] Figure 2 It is a schematic structural diagram of the lower mold to show;

[0026] Figure 3 To show Figure 2 An enlarged view of part A;

[0027] Figure 4 It is a schematic structural diagram of the upper mold to show;

[0028] Figure 5 It is a schematic sectional view of the exhaust structure to show.

[0029] Reference numerals: 11, lower mold; 111, concave part; 12, upper mold; 121, pouring port; 13, lower cavity; 14, upper cavity; 21, main runner; 22, first runner; 23, second runner; 24, first connection port; 25, second connection port; 3, stock storage area; 41, blanking cavity; 42, feeding cavity; 51, core-pulling; 52, power mechanism; 53, auxiliary cavity; 54, connection groove; 55, slag discharge channel; 56, guiding groove; 6, exhaust structure; 61, lower exhaust block; 62, upper exhaust block; 63, triangular convex part; 64, triangular groove; 7, partition board; 71, pouring area; 81, lower connecting groove; 82, upper connecting groove; 9, gap; 10, waste residue; 100, lightweight reducer rear cover; 101, protrusion; 102, mounting hole. Specific embodiments

[0030] The following further details the specific embodiments of the present invention in conjunction with the accompanying drawings, so that the technical solutions of the present invention are easier to understand and master.

[0031] A die-casting mold structure for a lightweight reducer rear cover includes a lower mold 11 and an upper mold 12. When in use, the lower mold 11 is placed vertically. A lower cavity 13 is formed in the lower mold 11, and an upper cavity 14 is formed in the upper mold 12. A total cavity is formed between the upper cavity 14 and the lower cavity 13. A concave part 111 is formed in the center of the lower cavity 13, and a pouring port 121 is formed in the upper mold 12. The pouring port 121 is located below the total cavity.

[0032] A main runner 21, a first runner 22 and a second runner 23 are formed in the lower mold 11. One end of the main runner 21 is communicated with the pouring port 121. One end of the first runner 22 is communicated with the main runner 21, and the other end of the first runner 22 is communicated with the lower cavity 13 through a first connection port 24. One end of the second runner 23 is communicated with the main runner 21, and the other end of the second runner 23 is communicated with the lower cavity 13 through a second connection port 25. Both the first connection port 24 and the second connection port 25 face the concave part 111.

[0033] Among them, there are two first runners 22 and two second runners 23, and one main runner 21. The two second runners 23 are located below the two first runners 22. Stock storage areas 3 are formed between the first runner 22 and the second runner 23 and between the two second runners 23, with a total of three stock storage areas 3.

[0034] A blanking cavity 41 is provided in the lower die 11, and a feeding cavity 42 corresponding to the blanking cavity 41 is provided in the upper die 12. The blanking cavity 41 communicates with the lower cavity 13 through a connecting channel. Waste residue 10 is placed in the feeding cavity 42 and the blanking cavity 41. Each stock storage area 3 has a blanking cavity 41.

[0035] The power mechanism 52 is fixedly connected to the lower die 11, and the core-pulling member 51 is connected to the power mechanism 52 and penetrates into the total cavity. The core-pulling member 51 is vertically placed. The core-pulling member 51 is used to form a mounting hole 102 on the lightweight reducer rear cover 100.

[0036] An auxiliary cavity 53 is provided in the upper die 12, and a connecting groove 54 is provided on the power mechanism 52. The auxiliary cavity 53 corresponds to the connecting groove 54. The waste residue 10 enters the auxiliary cavity 53 along the connecting groove 54. The lower die 11 is provided with a slag discharge channel 55 communicating with the auxiliary cavity 53. The slag discharge channel 55 is connected to the exhaust structure 6 through a guiding groove 56, and the guiding groove 56 is provided on the side of the upper die 12 facing the lower die 11.

[0037] Air enters the connecting groove 54 from the total cavity, then enters the auxiliary cavity 53 from the connecting groove 54, then enters the slag discharge channel 55 from the auxiliary cavity 53, and then enters the exhaust structure 6 from the guiding groove 56. Subsequently, the waste residue 10 enters the exhaust structure 6 along the guiding groove 56.

[0038] The exhaust structure 6 includes a lower exhaust block 61 and an upper exhaust block 62. The lower exhaust block 61 is fixedly connected to the side of the lower die 11 facing the upper die 12, and the upper exhaust block 62 is fixed to the side of the upper die 12 facing the lower die 11.

[0039] A plurality of triangular protrusions 63 are connected to the side of the upper exhaust block 62 facing the lower exhaust block 61, and the plurality of triangular protrusions 63 are arranged along the length direction of the upper exhaust block 62. A plurality of triangular grooves 64 are provided in the lower exhaust block 61, and the plurality of triangular grooves 64 are arranged along the length direction of the lower exhaust block 61. The triangular protrusions 63 are located in the triangular grooves 64, and there is a gap 9 between the triangular protrusions 63 and the triangular grooves 64. The cross-section of the gap 9 is wavy.

[0040] In order to prevent the waste residue 10 from easily passing through the lower exhaust block 61, the distance of the gap 9 gradually decreases in the direction away from the total cavity.

[0041] A lower communication groove 81 is formed in the lower die 11, and an upper communication groove 82 is formed in the upper die 12. One end of the lower communication groove 81 communicates with the lower cavity 13, and the other end of the lower communication groove 81 communicates with the upper communication groove 82. The upper communication groove 82 communicates with the lower exhaust block 61.

[0042] A partition plate 7 is fixedly connected to the middle of the lower exhaust block 61. The partition plate 7 is arranged along the length direction of the lower exhaust block 61, so that two pouring areas 71 are formed between the partition plate 7 and the triangular groove 64. The guide groove 56 and the upper communication groove 82 respectively communicate with the two pouring areas 71.

[0043] Of course, the above are only typical examples of the present invention. In addition, the present invention can also have many other specific implementation manners. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A die-casting mold structure for a lightweight reducer rear cover, comprising a lower mold (11) and an upper mold (12), wherein the lower mold (11) is provided with a lower mold cavity (13), the upper mold (12) is provided with an upper mold cavity (14), a main mold cavity is formed between the upper mold cavity (14) and the lower mold cavity (13), the main mold cavity is connected to an exhaust structure (6), the lower mold cavity (13) is provided with an inner concave portion (111), and the upper mold (12) is provided with a pouring port (121), wherein: The lower mold (11) is provided with a main flow channel (21), a first flow channel (22) and a second flow channel (23); one end of the main flow channel (21) is connected to the pouring port (121); one end of the first flow channel (22) is connected to the main flow channel (21); the other end of the first flow channel (22) is connected to the lower mold cavity (13) via a first connecting port (24); one end of the second flow channel (23) is connected to the main flow channel (21); the other end of the second flow channel (23) is connected to the lower mold cavity (13) via a second connecting port (25); the first connecting port (24) and the second connecting port (25) are both facing the inner recess (111).

2. According to claim 1, a lightweight reducer rear cover die-casting mold structure is characterized by: The lower mold (11) is provided with a lower material cavity (41), and the upper mold (12) is provided with an upper material cavity (42) corresponding to the lower material cavity (41), and the lower material cavity (41) is connected with the lower mold cavity (13) through a connecting channel.

3. The die-casting mold structure for the rear cover of a lightweight reducer according to claim 1 is characterized in that: It also includes a core puller (51) and a power mechanism (52), wherein the power mechanism (52) is connected to the lower mold (11), and the core puller (51) is connected to the power mechanism (52) and penetrates into the main mold cavity.

4. The die-casting mold structure for the rear cover of a lightweight reducer according to claim 3 is characterized in that: The upper mold (12) is provided with an auxiliary cavity (53), the power mechanism (52) is provided with a connecting groove (54), the auxiliary cavity (53) corresponds to the connecting groove (54), the lower mold (11) is provided with a slag discharge channel (55) connected to the auxiliary cavity (53), the slag discharge channel (55) is connected to the exhaust structure (6) through a guide groove (56), and the guide groove (56) is provided on the upper mold (12).

5. The die-casting mold structure for the rear cover of a lightweight reducer according to claim 4 is characterized in that: The exhaust structure (6) comprises a lower exhaust block (61) and an upper exhaust block (62); the lower exhaust block (61) is fixedly connected to the lower mold (11); the upper exhaust block (62) is fixed to the upper mold (12); a plurality of triangular protrusions (63) are connected to the side of the upper exhaust block (62) facing the lower exhaust block (61); a plurality of triangular grooves (64) are provided on the lower exhaust block (61); the triangular protrusions (63) are located in the triangular grooves (64); and a gap (9) is provided between the triangular protrusions (63) and the triangular grooves (64).

6. The die-casting mold structure for the rear cover of a lightweight reducer according to claim 5 is characterized in that: The distance of the gap (9) gradually decreases in the direction away from the main cavity.

7. The die-casting mold structure for the rear cover of a lightweight reducer according to claim 6 is characterized in that: The lower mold (11) is provided with a lower connecting groove (81), and the upper mold (12) is provided with an upper connecting groove (82). One end of the lower connecting groove (81) is connected to the lower cavity (13), and the other end of the lower connecting groove (81) is connected to the upper connecting groove (82). The upper connecting groove (82) is connected to the lower exhaust block (61).

8. The die-casting mold structure for the rear cover of a lightweight reducer according to claim 7 is characterized in that: A partition plate (7) is fixedly connected to the lower exhaust block (61), a pouring area (71) is formed between the partition plate (7) and the triangular groove (64), and the guide groove (56) and the upper connecting groove (82) are connected to the pouring area (71).

9. The die-casting mold structure for a lightweight reducer rear cover according to claim 2 is characterized in that: There are two first flow channels (22) and two second flow channels (23), and a material storage area (3) is formed between the first flow channel (22) and the second flow channel (23) and between the two second flow channels (23), and a material discharge cavity (41) is provided in the material storage area (3).

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