Improved exhaust structure of clutch shell mold

Abstract

The utility model discloses an improved exhaust structure of a clutch shell mold, which relates to the technical field and comprises a front mold, a rear mold, an exhaust component and an air extractor. A cavity is formed between the rear mold and the front mold; the exhaust assembly comprises a front exhaust part and a rear exhaust part, the front exhaust part is connected with the front mold, the rear exhaust part is connected with the rear mold, an exhaust flow channel is arranged between the rear exhaust part and the front exhaust part, the exhaust flow channel is communicated with the cavity, and a baffling part is arranged on the inner wall of the exhaust flow channel and used for increasing the distance of airflow passing through the exhaust flow channel; the air extractor is detachably connected to the front exhaust part and the rear exhaust part and used for extracting air in the exhaust flow channel. The aluminum spraying prevention device can prevent aluminum spraying accidents in the production process.

Description

Technical Field

[0001] This utility model relates to the technical field, and in particular to an improved exhaust structure for a clutch housing mold. Background Technology

[0002] Clutches are widely used in the automotive industry and are important components of automobiles, playing an indispensable role in the transmission of power and movement. Due to the complex shape of the clutch housing, the forming of automotive clutch housings has progressed from traditional gravity casting to pressure casting. In the process of die casting clutch housings, molten metal is injected into the mold cavity under pressure and cooled to solidify. Although the venting structure of existing die casting molds can meet the process requirements of rapid venting, the sealing distance of the existing venting structure is insufficient. This can easily lead to aluminum spraying accidents in the production of products, resulting in insufficient pressure holding parameters, internal residual gas, poor sealing performance, and low yield. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an improved exhaust structure for a clutch housing mold, which can prevent aluminum spraying accidents during the production process.

[0004] An improved venting structure for a clutch housing mold according to a first aspect of the present invention includes: a front mold, a rear mold, a venting assembly, and an air extraction device. A cavity is provided between the rear mold and the front mold. The venting assembly includes a front venting section and a rear venting section. The front venting section is connected to the front mold, and the rear venting section is connected to the rear mold. An venting channel is provided between the rear venting section and the front venting section. The venting channel communicates with the cavity. A baffle is provided on the inner wall of the venting channel to increase the distance the airflow travels through the venting channel. The air extraction device is detachably connected to the front venting section and the rear venting section and is used to extract air from the venting channel.

[0005] An improved venting structure for a clutch housing mold according to an embodiment of this utility model has at least the following beneficial effects: When molten aluminum alloy is injected into the cavity, the air inside the cavity is compressed and discharged from the venting channel. The baffles in the venting channel increase the contact area between the venting channel and the air. After the air is completely discharged, the molten aluminum alloy enters the venting channel. Due to the presence of the baffles, the molten aluminum alloy needs to flow a relatively long distance to be discharged. As the molten aluminum alloy passes through the venting channel, it is cooled by the front and rear venting sections. After cooling in the venting channel, the venting channel is blocked, preventing aluminum spraying accidents during production. An air extraction device is installed to accelerate the air discharge speed and prevent cavitation in the cavity. This improves the molding quality of the cast clutch housing product.

[0006] According to some embodiments of the present invention, the exhaust channel includes a main channel and multiple branch channels, and the multiple branch channels are respectively connected to the overflow groove provided at the edge of the cavity.

[0007] According to some embodiments of the present invention, the thickness of the exhaust channel is 0.05 mm to 0.1 mm.

[0008] According to some embodiments of the present invention, the deflector includes a plurality of front protrusions and a plurality of rear protrusions. The front protrusions are disposed on the side of the front exhaust section near the rear exhaust section. The plurality of front protrusions are spaced apart along the extension direction of the exhaust channel. The rear protrusions are disposed on the side of the rear exhaust section near the front exhaust section. The plurality of rear protrusions are spaced apart along the extension direction of the exhaust channel. The front protrusions and rear protrusions are staggered.

[0009] According to some embodiments of the present invention, the air extraction device includes a vacuum pump and a quick-release connector. A connecting hole communicating with the exhaust channel is formed between the front exhaust section and the rear exhaust section. The quick-release connector is snapped into the connecting hole. The vacuum pump is connected to the quick-release connector through an air extraction pipe.

[0010] According to some embodiments of the present invention, a snap-fit ​​groove is provided in the connecting hole, and the snap-fit ​​part is provided on the quick-release connector. The snap-fit ​​part can be embedded in the snap-fit ​​groove to prevent the quick-release connector from detaching from the connecting hole.

[0011] According to some embodiments of the present invention, a sliding hole is provided on the side wall of the snap-fit ​​groove, and a slider is movably disposed in the snap-fit ​​groove. The slider part extends into the sliding hole, and an elastic element is provided in the sliding hole. The elastic element is used to push the slider to press the snap-fit ​​part, and the slider can push the snap-fit ​​part to move closer to the exhaust channel.

[0012] According to some embodiments of this utility model, both the snap-fit ​​portion and the slider are provided with matching chamfers.

[0013] According to some embodiments of the present invention, an annular ring is provided around the outer peripheral wall of the quick-release connector, the annular ring abuts against the end of the exhaust assembly, and a sealing ring is provided on the side of the annular ring near the exhaust assembly, the sealing ring being used to seal the gap between the exhaust assembly and the annular ring.

[0014] According to some embodiments of the present invention, the air extraction device is provided with a magnetic suction part, which can be attracted to the front exhaust part.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 This is a schematic diagram of the front mold of one embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the rear mold of one embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of an exhaust assembly according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of an air extraction device according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the front exhaust section according to an embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of the rear exhaust section according to an embodiment of the present invention;

[0023] Figure 7 This is a cross-sectional schematic diagram of an exhaust assembly according to an embodiment of the present invention;

[0024] Figure 8 for Figure 7 Enlarged view of point A in the middle;

[0025] Figure 9 for Figure 7 Enlarged view of point B in the middle.

[0026] Icon labels:

[0027] Front mold 100;

[0028] Rear mold 200, cavity 210, overflow groove 220;

[0029] Exhaust assembly 300, front exhaust section 310, rear exhaust section 320, exhaust flow channel 330, main flow channel 331, branch flow channel 332, deflection section 340, front boss 341, multiple rear bosses 342, connecting hole 350, snap-fit ​​groove 351, sliding hole 352, slider 353, elastic element 354;

[0030] The components include: a vacuum pump 400, a magnetic suction part 401, a vacuum pump 410, a vacuum pipe 411, a quick-release connector 420, a snap-fit ​​part 421, and an annular ring 422. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0032] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0034] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0035] Reference Figures 1 to 9As shown, an improved venting structure for a clutch housing mold according to an embodiment of this utility model includes: a front mold 100, a rear mold 200, a venting assembly 300, and a suction device 400. The rear mold 200 and the front mold 100 can be closed and separated under the drive of a casting equipment. When the rear mold 200 and the front mold 100 are closed, the gap between them forms a cavity 210. Injecting molten aluminum alloy into the cavity 210 can form a clutch housing of a corresponding shape. The specific structures of the front mold 100 and the rear mold 200 are prior art and will not be described in detail. The venting assembly 300 includes a front venting section 310 and a rear venting section 320. The front venting section 310 is connected to the front mold 100 by welding. The rear venting section 320 is connected to the rear mold 200 by welding. The front vent 310 and the rear vent 320 are aligned in the front-to-back direction. When the front mold 100 and the rear mold 200 are closed, the front vent 310 and the rear vent 320 are pressed together. After the front vent 310 and the rear vent 320 are pressed together, the gap between the rear vent 320 and the front vent 310 forms an exhaust channel 330, which is connected to the cavity 210. When molten aluminum alloy is injected into the cavity 210, the air in the cavity 210 is compressed and discharged from the exhaust channel 330. The inner wall of the exhaust channel 330 is provided with a baffle 340, which increases the distance the air travels through the exhaust channel 330. The baffle 340 reduces the cross-sectional area of ​​the exhaust channel 330 and increases the air travel distance in the exhaust channel 330. The baffle 340 also increases the contact area between the exhaust channel 330 and the air. After all the air is expelled, the molten aluminum alloy enters the exhaust channel 330. Due to the presence of the baffle 340, the molten aluminum alloy needs to flow a relatively long distance to be discharged. As the molten aluminum alloy passes through the exhaust channel 330, it is cooled by the front exhaust section 310 and the rear exhaust section 320. After cooling in the exhaust channel 330, the exhaust channel 330 is blocked, preventing aluminum spraying accidents during production. The air extraction device 400 is detachably connected to the front exhaust section 310 and the rear exhaust section 320. The air extraction device 400 is used to extract air from the exhaust channel 330. Because the baffle 340 reduces the cross-sectional area of ​​the exhaust channel 330, the resistance to air passing through the exhaust channel 330 increases, which may affect the final molding quality of the cast clutch housing product. Therefore, the air extraction device 400 is provided to assist in air discharge and improve the molding quality of the cast clutch housing product.

[0036] Reference Figures 1 to 6As shown, it can be understood that the exhaust channel 330 includes a main channel 331 and three branch channels 332. The three branch channels 332 are respectively connected to the overflow grooves 220 provided at the edge of the cavity 210. The specific structure of the overflow grooves 220 is prior art, so it will not be described in detail. In the prior art, there are a large number of overflow grooves 220. In order to avoid setting too many front exhaust parts 310 and rear exhaust parts 320, a single main channel 331 is connected to three overflow grooves 220 through three branch channels 332 to receive the discharged gas.

[0037] Reference Figures 1 to 9 As shown, it can be understood that the thickness of the venting channel 330 is between 0.05 mm and 0.1 mm. If the thickness of the venting channel 330 is too large, the molten aluminum alloy will not have enough time to cool before flowing out of the venting channel 330. If the thickness of the venting channel 330 is too small, the venting channel 330 will generate greater resistance to the flowing air, preventing the air from being discharged and forming a cavity in the mold cavity 210, which will affect the quality of the casting.

[0038] Reference Figures 4 to 8 As shown, the deflector 340 includes multiple front protrusions 341 and multiple rear protrusions 342. The front protrusions 341 are located on the side of the front exhaust section 310 near the rear exhaust section 320, and the multiple front protrusions 341 are spaced apart along the extension direction of the exhaust channel 330. The rear protrusions 342 are located on the side of the rear exhaust section 320 near the front exhaust section 310, and the multiple rear protrusions 342 are spaced apart along the extension direction of the exhaust channel 330. When the front exhaust section 310 and the rear exhaust section 320 are in close contact, the positions of the front protrusions 341 and the rear protrusions 342 are staggered. The rear protrusions 342 and the front protrusions 341 cause the exhaust channel 330 to bend into a wavy shape, thereby increasing the total length of the exhaust channel 330 within a limited space.

[0039] Reference Figures 1 to 9 As shown, the vacuum pump 400 includes a vacuum pump 410 and a quick-release connector 420. The specific structure of the vacuum pump 410 is existing technology and will not be described in detail. A connecting hole 350 communicating with the exhaust channel 330 is formed between the front exhaust section 310 and the rear exhaust section 320. The cross-sectional area of ​​the connecting hole 350 is larger than that of the exhaust channel 330. The connecting hole 350 is a rectangular hole, and the quick-release connector 420 is snapped into the connecting hole 350. The vacuum pump 410 is connected to the quick-release connector 420 through a vacuum pipe 411. The vacuum pipe 411 can be a flexible hose. It is foreseeable that the same vacuum pump 410 can be connected to multiple quick-release connectors 420 through multiple vacuum pipes 411 to save equipment costs. By setting a rectangular connecting hole 350 and quick-release connector 420 for connection, the installation speed of the front mold 100 and the rear mold 200 is improved compared with the use of threaded connection, which is beneficial to improving production efficiency.

[0040] Reference Figures 1 to 9 As shown, it can be understood that a snap-fit ​​groove 351 is provided in the connecting hole 350, and a snap-fit ​​portion 421 is provided on the quick-release connector 420. When the front vent 310 and the rear vent 320 are tightly abutted, the snap-fit ​​portion 421 can be inserted into the snap-fit ​​groove 351 to prevent the quick-release connector 420 from disengaging from the connecting hole 350. By providing the snap-fit ​​groove 351 and the snap-fit ​​portion 421 for connection, the installation speed of the front mold 100 and the rear mold 200 is improved compared to the use of threaded connection, which is beneficial to improving production efficiency. It is foreseeable that multiple sets of snap-fit ​​grooves 351 and snap-fit ​​portions 421 are symmetrically arranged to improve the stability after installation.

[0041] Reference Figures 7 to 9 As shown, it can be understood that a sliding hole 352 is provided on the side wall of the snap-fit ​​groove 351 away from the exhaust channel 330. The sliding hole 352 extends in a direction away from the exhaust channel 330. A slider 353 is movably disposed in the snap-fit ​​groove 351, with part of the slider 353 extending into the sliding hole 352. An elastic element 354 is provided in the sliding hole 352 for the slider 353. The elastic element 354 is made of metal spring or rubber block. One end of the elastic element 354 abuts against the slider 353, and the other end abuts against the bottom wall of the sliding hole 352. The elastic element 354 is used to push the slider 353 to press the snap-fit ​​part 421. The slider 353 can push the snap-fit ​​part 421 to move closer to the exhaust channel 330. The elastic element 354 plays a pressing role, which increases the pre-tightening force for the quick-release connector 420 to be inserted into the connection hole 350, which is beneficial to improving the sealing effect.

[0042] Reference Figures 1 to 9 As shown, both the snap-fit ​​part 421 and the slider 353 have matching chamfers. The snap-fit ​​part 421 and the slider 353 are positioned to match each other. As the front exhaust part 310 and the rear exhaust part 320 approach each other, the snap-fit ​​part 421 gradually extends into the snap-fit ​​groove 351. The chamfer on the slider 353 contacts the chamfer on the snap-fit ​​part 421, allowing the snap-fit ​​part 421 to push the slider 353 away from the exhaust channel 330. The elastic element 354 is compressed. After the front exhaust part 310 and the rear exhaust part 320 are pressed together, the elastic element 354 pushes the slider 353 to press the snap-fit ​​part 421 tightly. The slider 353 can then push the snap-fit ​​part 421 towards the exhaust channel 330. The movement of the front exhaust part 310 and the rear exhaust part 320 achieves the fixation of the quick-release connector 420, increasing the installation speed of the quick-release connector 420 and improving production efficiency.

[0043] Reference Figures 1 to 9As shown, it can be understood that an annular ring 422 is integrally formed with the quick-release connector 420, and the outer peripheral wall of the quick-release connector 420 is surrounded by the annular ring 422. The annular ring 422 can abut against the end of the exhaust assembly 300, and the annular ring 422 plays a positioning role, limiting the distance that the quick-release connector 420 is inserted into the connection hole 350. A sealing ring is provided on the side of the annular ring 422 near the exhaust assembly 300. The sealing ring is made of rubber or silicone and is used to seal the gap between the exhaust assembly 300 and the annular ring 422.

[0044] Reference Figures 1 to 4 As shown, the suction device 400 is equipped with a magnetic suction part 401, which is bolted to the outside of the annular ring 422. Two magnetic suction parts 401 are symmetrically arranged in the front-to-back direction. The two magnetic suction parts 401 are respectively used to adhere to the front exhaust part 310 or the rear exhaust part 320. Both the front exhaust part 310 and the rear exhaust part 320 are made of H13 mold steel. When installing the quick-release connector 420, the front exhaust part 310 and the rear exhaust part 320 are in a separated state. First, the magnetic suction part 401 is adhered to the front exhaust part 310, serving as a pre-positioning mechanism. Then, the front exhaust part 310 and the rear exhaust part 320 are closed to complete the installation of the quick-release connector 420.

[0045] Usage steps: With the front mold 100 and rear mold 200 in a separated state, and the front exhaust part 310 and rear exhaust part 320 in a separated state, first attach the magnetic part 401 to the front exhaust part 310 to achieve pre-quick positioning. Then, the front mold 100 and rear mold 200 are closed, which drives the front exhaust part 310 and rear exhaust part 320 to close, thus completing the installation of the quick-release connector 420. As the front exhaust section 310 and the rear exhaust section 320 approach each other, the snap-fit ​​part 421 gradually extends into the snap-fit ​​groove 351. The chamfer on the slider 353 contacts the chamfer on the snap-fit ​​part 421, allowing the snap-fit ​​part 421 to push the slider 353 to move away from the exhaust channel 330. The elastic element 354 is compressed. After the front exhaust section 310 and the rear exhaust section 320 are pressed together, the elastic element 354 pushes the slider 353 to press the snap-fit ​​part 421. The slider 353 can push the snap-fit ​​part 421 to move closer to the exhaust channel 330, so that the annular ring 422 can press against the end of the exhaust assembly 300, achieving a seal between the quick-release connector 420 and the connecting hole 350.

[0046] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An improved exhaust structure for a clutch housing mold, characterized in that, include: Front mold (100); A rear mold (200) is provided with a cavity (210) between the rear mold (200) and the front mold (100). An exhaust assembly (300) includes a front exhaust section (310) and a rear exhaust section (320). The front exhaust section (310) is connected to the front mold (100), and the rear exhaust section (320) is connected to the rear mold (200). An exhaust channel (330) is provided between the rear exhaust section (320) and the front exhaust section (310). The exhaust channel (330) is connected to the cavity (210). A baffle (340) is provided on the inner wall of the exhaust channel (330). The baffle (340) is used to increase the distance that the airflow passes through the exhaust channel (330). An air extraction device (400) is detachably connected to the front exhaust section (310) and the rear exhaust section (320), and the air extraction device (400) is used to extract air from the exhaust channel (330).

2. The improved exhaust structure of the clutch housing mold according to claim 1, characterized in that: The exhaust channel (330) includes a main channel (331) and multiple branch channels (332), and the multiple branch channels (332) are respectively connected to the overflow groove (220) provided at the edge of the cavity (210).

3. The improved exhaust structure of the clutch housing mold according to claim 1, characterized in that: The thickness of the exhaust channel (330) is 0.05 mm to 0.1 mm.

4. The improved exhaust structure of the clutch housing mold according to claim 3, characterized in that: The deflector (340) includes a plurality of front protrusions (341) and a plurality of rear protrusions (342). The front protrusions (341) are disposed on the side of the front exhaust section (310) near the rear exhaust section (320). The plurality of front protrusions (341) are spaced apart along the extension direction of the exhaust channel (330). The rear protrusions (342) are disposed on the side of the rear exhaust section (320) near the front exhaust section (310). The plurality of rear protrusions (342) are spaced apart along the extension direction of the exhaust channel (330). The front protrusions (341) and the rear protrusions (342) are staggered.

5. The improved exhaust structure of the clutch housing mold according to claim 4, characterized in that: The air extraction device (400) includes a vacuum pump (410) and a quick-release connector (420). A connection hole (350) communicating with the exhaust channel (330) is formed between the front exhaust section (310) and the rear exhaust section (320). The quick-release connector (420) is snapped into the connection hole (350). The vacuum pump (410) is connected to the quick-release connector (420) through an air extraction pipe (411).

6. The improved exhaust structure of the clutch housing mold according to claim 5, characterized in that: The connecting hole (350) is provided with a snap-fit ​​groove (351), and the quick-release connector (420) is provided with a snap-fit ​​part (421). The snap-fit ​​part (421) can be embedded in the snap-fit ​​groove (351) to prevent the quick-release connector (420) from detaching from the connecting hole (350).

7. The improved exhaust structure of the clutch housing mold according to claim 6, characterized in that: The snap-fit ​​groove (351) has a sliding hole (352) on its side wall. A slider (353) is movably disposed in the snap-fit ​​groove (351). The slider (353) extends into the sliding hole (352). An elastic element (354) is provided in the sliding hole (352). The elastic element (354) is used to push the slider (353) to press the snap-fit ​​part (421). The slider (353) can push the snap-fit ​​part (421) to move closer to the exhaust channel (330).

8. The improved exhaust structure of the clutch housing mold according to claim 7, characterized in that: Both the snap-fit ​​part (421) and the slider (353) are provided with matching chamfers.

9. The improved exhaust structure of the clutch housing mold according to claim 8, characterized in that: The quick-release connector (420) has an annular ring (422) surrounding its outer peripheral wall. The annular ring (422) abuts against the end of the exhaust assembly (300). A sealing ring is provided on the side of the annular ring (422) near the exhaust assembly (300). The sealing ring is used to seal the gap between the exhaust assembly (300) and the annular ring (422).

10. The improved exhaust structure of the clutch housing mold according to claim 9, characterized in that: The air extraction device (400) is provided with a magnetic suction part (401), which can be attracted to the front exhaust part (310).

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