A high-precision cavity exhaust assembly of a die special for automobile parts

Abstract

The utility model discloses a high accuracy automobile parts special mould's cavity exhaust component, including upper mould core and lower mould core, all be equipped with a plurality of discharge groove and exhaust groove in upper mould core and lower mould core, the detachable exhaust pipe of discharge groove, the inside one end of exhaust pipe is fixedly equipped with the seal frame, and the seal frame one side swing is equipped with the seal cover, and the seal frame one side fixedly connected is equipped with the middle through pipe, and the seal cover slidingly covers and is equipped in the middle through pipe outside, and the seal cover one side is connected and is equipped with a plurality of connecting rods, and the connecting rod other end is connected and is equipped with the top cover, and the seal frame is equipped with the seal groove in, and the seal cover inboard is fixedly equipped with the sealing ring, and the spring of the middle through pipe outside swing cover is equipped, and spring both ends are connected with seal cover and top cover respectively, the utility model provides the active cleaning mechanism, avoids the exhaust groove cleaning maintenance work frequently.

Description

Technical Field

[0001] This utility model relates to the field of cavity venting technology for special molds for automotive parts, and more specifically, it relates to a cavity venting assembly for a high-precision special mold for automotive parts. Background Technology

[0002] In existing technologies, cavity venting components for high-precision automotive parts molds primarily address the gas emission problem during the stamping process. The performance of the venting system significantly impacts stamping quality and part precision. Typically, venting devices are needed to promptly remove gases and lubricating oil mist generated during rapid material deformation and extrusion within the cavity. This prevents gas accumulation that could hinder the sheet metal's adherence to the mold, and avoids stamping defects such as unclear indentations, localized bulges, and incomplete forming on the part surface. This ensures that the dimensional accuracy and surface quality of the stamped parts meet the technical requirements of high-precision automotive parts. However, existing venting components generally only involve simple venting grooves or holes on the sidewalls of the stamping mold cavity or at the parting line. These venting channels are directly exposed to the external environment. Without any one-way sealing or protective mechanism, the venting grooves on both sides of the mold core are completely exposed to the workshop environment when the mold is not in operation or during stamping production breaks. Dust particles, metal shavings, fiber impurities, and other foreign objects in the outside air will gradually enter the venting grooves on both sides of the mold core under the influence of airflow disturbance. Over time, this can easily lead to blockage inside the venting grooves or a significant reduction in the cross-sectional area of ​​the venting channel, resulting in a significant decrease in venting efficiency or even complete loss of venting function. Not only will it be unable to expel the high-pressure gas and lubricating oil mist inside the cavity in a timely manner, but poor venting will also cause a decline in the surface quality of stamped parts and an increase in forming defects, affecting the pass rate and production stability of high-precision automotive parts. At the same time, frequent cleaning and maintenance of the venting grooves will also increase mold maintenance costs and downtime, adversely affecting production efficiency and economic benefits. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the problems existing in the prior art, this utility model provides a cavity venting assembly for a high-precision automotive parts mold, thereby solving the technical problems mentioned in the background art.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: a cavity venting assembly for a high-precision automotive parts mold, comprising an upper mold core and a lower mold core, both of which have multiple discharge grooves and venting slots. A detachable venting pipe is provided in each discharge groove. A sealing frame is fixedly installed at one end of the venting pipe. A sealing cover is movably installed on one side of the sealing frame. A central tube is fixedly connected to one side of the sealing frame. The sealing cover is slidably sleeved on the outside of the central tube. Multiple connecting rods are connected to one side of the sealing cover, and a top cover is connected to the other end of each connecting rod. A sealing groove is provided in the sealing frame. A sealing ring is fixedly installed inside the sealing cover. A spring is movably sleeved on the outside of the central tube, with both ends of the spring connected to the sealing cover and the top cover, respectively.

[0007] The present invention is further configured such that the exhaust groove is located at a non-surface intersection.

[0008] The present invention is further configured such that the discharge groove is connected to the exhaust groove.

[0009] The present invention is further configured such that both the inner wall and the top cover of the sealing cover are designed with a conical structure.

[0010] The present invention is further configured such that a central channel groove is provided inside the central channel pipe.

[0011] The present invention is further configured such that the side wall of the central tube is provided with multiple side passage grooves.

[0012] The present invention is further configured such that a connecting frame is fixedly provided in the exhaust pipe, and the other end of the central pipe is fixedly connected to the connecting frame.

[0013] The present invention is further configured such that multiple sealing rings and sealing grooves are provided, and the sealing rings are made of rubber.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a cavity venting assembly for a high-precision automotive parts mold, which has the following advantages:

[0016] 1. By detachably installing an exhaust pipe in the exhaust groove and fixing a sealing frame inside one end of the exhaust pipe, a sealing cover is movably installed on one side of the sealing frame, and a central tube is fixedly connected to one side of the sealing frame so that the sealing cover slides on the outside of the central tube. When gas is discharged from the exhaust groove, the gas will push the inner conical sealing cover to slide along the central tube and drive multiple sealing rings on one side to disengage from the sealing groove opened on one side of the sealing frame. Then, part of the gas enters the central groove opened on the inside of the central tube through the side groove and flows, while the other part of the gas enters the exhaust pipe through the outside of the sealing cover. This one-way opening exhaust mechanism can timely discharge the gas and lubricating oil mist generated inside the cavity due to the rapid deformation and extrusion of the material during the stamping process, avoid the accumulation of gas inside the cavity and hinder the molding effect of the sheet metal, effectively prevent stamping defects such as unclear indentations, local protrusions and incomplete forming on the surface of the parts, and improve the dimensional accuracy and surface quality of the stamped parts.

[0017] 2. By connecting multiple connecting rods to one side of the sealing cover and a conical top cover to the other end of the connecting rods, when the gas pushes the sealing cover to slide, the sealing cover will drive the multiple connecting rods on one side to slide, causing the connecting rods to drive the conical top cover connected to the other end to slide outward. Even if some dust and foreign objects enter the discharge groove, they will be pushed out of the discharge groove by the conical top cover. Then the gas will be discharged through the gap between the exhaust pipe and the top cover to achieve the discharge function. This active cleaning mechanism can automatically remove dust particles, metal debris, fiber impurities and other foreign objects that may enter the discharge groove during each exhaust process. It solves the problem that in traditional exhaust components, foreign objects gradually enter the discharge groove under the influence of airflow disturbance due to the direct connection between the exhaust channel and the external environment, causing blockage inside the exhaust groove or a significant reduction in the cross-sectional area of ​​the exhaust channel. It avoids the situation where the surface quality of stamped parts decreases and the forming defects increase due to a significant reduction in exhaust efficiency or even complete loss of exhaust function, thus improving the reliability of the exhaust system and the pass rate of high-precision automotive parts.

[0018] 3. By installing a spring on the outside of the central tube and connecting its two ends to the sealing cover and the top cover respectively, after the gas is discharged, the spring returns to its original position and pushes the sealing cover to slide back along the central tube. The sealing cover, through multiple connecting rods on one side, drives the top cover to slide back, thus resealing one end of the exhaust pipe to prevent foreign objects and dust from entering the exhaust pipe and thus preventing foreign objects and dust from entering the exhaust groove. At the same time, the sealing cover will drive multiple sealing rings on one side to re-engage into multiple sealing grooves on one side of the sealing frame to form a multi-layer seal, thereby resealing the exhaust pipe and ensuring airtightness. This one-way sealing protection mechanism allows the exhaust pipe to automatically close the exhaust channel and form a multi-layer sealing barrier when the mold is not working or during the stamping production interval. This eliminates the risk of foreign objects such as dust particles, metal debris, and fiber impurities in the outside air entering the exhaust grooves on both sides of the mold core under the influence of airflow disturbance. It avoids the situation of increasing mold maintenance costs and downtime due to frequent exhaust groove cleaning and maintenance work, and improves the long-term stability and production efficiency of the exhaust system. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a cavity venting assembly for a high-precision automotive parts mold according to the present invention.

[0020] Figure 2 This is a schematic diagram of the dispersed structure of the upper mold core and the lower mold core in this utility model;

[0021] Figure 3 This is a schematic diagram of the exhaust pipe section in this utility model;

[0022] Figure 4 This is a cross-sectional view of the exhaust pipe, top cover, and sealing cover in this utility model.

[0023] Figure 5 This is a schematic diagram of the top cover and sealing cover in this utility model.

[0024] In the diagram: 1. Upper mold core; 2. Lower mold core; 3. Exhaust groove; 4. Exhaust groove; 5. Exhaust pipe; 6. Sealing frame; 7. Sealing cover; 8. Central through pipe; 9. Connecting rod; 10. Top cover; 11. Sealing groove; 12. Sealing ring; 13. Spring; 14. Central through groove; 15. Side through groove; 16. Connecting frame. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0027] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0028] Please see Figures 1-5 A cavity venting assembly for a high-precision automotive parts mold includes an upper mold core 1 and a lower mold core 2. The assembly is characterized by multiple discharge grooves 3 and venting grooves 4 in both the upper and lower mold cores 1 and 2. A detachable venting pipe 5 is provided in each discharge groove 3. A sealing frame 6 is fixedly installed at one end of the venting pipe 5. A sealing cover 7 is movably installed on one side of the sealing frame 6. A central tube 8 is fixedly connected to one side of the sealing frame 6. The sealing cover 7 is slidably sleeved on the outside of the central tube 8. Multiple connecting rods 9 are connected to one side of the sealing cover 7, and a top cover 10 is connected to the other end of each connecting rod 9. A sealing groove 11 is provided in the sealing frame 6. A sealing ring 12 is fixedly installed inside the sealing cover 7. A spring 13 is movably sleeved on the outside of the central tube 8, with both ends of the spring 13 connected to the sealing cover 7 and the top cover 10, respectively.

[0029] The exhaust groove 4 is located at the non-surface intersection.

[0030] Discharge trough 3 is connected to exhaust trough 4.

[0031] In this embodiment, when gas is discharged from the exhaust groove 4, the gas flows through the exhaust groove 4 to the exhaust pipe 5 in the discharge groove 3. Then, the gas pushes the inner conical sealing cover 7, causing the sealing cover 7 to slide along the central tube 8. The sealing cover 7 also causes multiple sealing rings 12 on one side to disengage from the sealing groove 11 on one side of the sealing frame 6. The sealing cover 7 and the connecting frame 16 cooperate to squeeze the spring 13 sleeved on the outside of the central tube 8. Then, part of the gas will enter the central groove 14 on the inside of the central tube 8 through the transverse groove, and another part of the gas will enter the exhaust pipe 5 through the outside of the sealing cover 7. At the same time, the sealing cover 7 will cause multiple connecting rods 9 on one side to slide, causing the connecting rods 9 to drive the conical top cover 10 connected to the other end to slide. The top cover 10 slides outward, so that even if some dust and foreign objects enter the discharge groove 3, they will be pushed out of the discharge groove 3 by the conical top cover 10. Then, the gas will be discharged through the gap between the exhaust pipe 5 and the top cover 10, thus realizing the discharge function.

[0032] Please see Figures 3-5As a further implementation of the overall equipment: the inner wall of the sealing cover 7 and the top cover 10 are both designed with a conical structure.

[0033] The central through pipe 8 has a central through groove 14 inside.

[0034] The central tube 8 has multiple side passage grooves 15 on its side wall.

[0035] A connecting bracket 16 is fixedly installed in the exhaust pipe 5, and the other end of the central pipe 8 is fixedly connected to the connecting bracket 16.

[0036] Multiple sealing rings 12 and sealing grooves 11 are provided, and the sealing rings 12 are made of rubber.

[0037] More specifically, after the gas is completely discharged, the spring 13 returns to its original function. Then, the spring 13 pushes the sealing cover 7 to slide and reset along the central tube 8, so that the sealing cover 7 drives the top cover 10 to slide and reset through multiple connecting rods 9 on one side. This causes the top cover 10 to re-seal one end of the exhaust pipe 5, preventing foreign objects and dust from entering the exhaust pipe 5, thereby preventing foreign objects and dust from entering the exhaust groove 4. At the same time, the sealing cover 7 will drive multiple sealing rings 12 set on one side to re-clamp into multiple sealing grooves 11 opened on one side of the sealing frame 6, forming a multi-layer seal, realizing the re-sealing of the exhaust pipe 5, and ensuring airtightness.

[0038] In summary, during use or operation of the overall equipment: when gas is discharged from the exhaust trough 4, the gas flows through the exhaust trough 4 to the exhaust pipe 5 in the discharge trough 3. The gas then pushes the inner conical sealing cover 7, causing the sealing cover 7 to slide along the central tube 8. The sealing cover 7 also causes multiple sealing rings 12 on one side to disengage from the sealing groove 11 on one side of the sealing frame 6. The sealing cover 7, together with the connecting frame 16, compresses the spring 13 fitted on the outside of the central tube 8. Then, part of the gas flows through the transverse groove into the central groove 14 on the inner side of the central tube 8, while the other part flows through the outside of the sealing cover 7 into the exhaust pipe 5. At the same time, the sealing cover 7 causes multiple connecting rods 9 on one side to slide, causing the connecting rods 9 to slide the conical top cover 10 connected to the other end. This causes the top cover 10 to slide outward, so that even if some dust and foreign objects enter the discharge trough 3, they will be pushed out of the discharge trough 3 by the conical top cover 10. Then, the gas will be discharged through the gap between the exhaust pipe 5 and the top cover 10, thus achieving the discharge function.

[0039] After the gas is completely discharged, the spring 13 returns to its original function. Then, the spring 13 pushes the sealing cover 7 to slide back along the central tube 8, so that the sealing cover 7 drives the top cover 10 to slide back through multiple connecting rods 9 on one side. This causes the top cover 10 to re-seal one end of the exhaust pipe 5, preventing foreign objects and dust from entering the exhaust pipe 5, thus preventing foreign objects and dust from entering the exhaust groove 4. At the same time, the sealing cover 7 will drive multiple sealing rings 12 set on one side to re-clamp into multiple sealing grooves 11 opened on one side of the sealing frame 6, forming a multi-layer seal, realizing the re-sealing of the exhaust pipe 5, and ensuring airtightness.

[0040] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A cavity venting assembly for a high-precision automotive parts mold, comprising an upper mold core (1) and a lower mold core (2), characterized in that: The upper mold core (1) and the lower mold core (2) are provided with multiple discharge grooves (3) and exhaust grooves (4). The discharge groove (3) is provided with a detachable exhaust pipe (5). A sealing frame (6) is fixedly provided at one end of the exhaust pipe (5). A sealing cover (7) is movably provided on one side of the sealing frame (6). A central tube (8) is fixedly connected to one side of the sealing frame (6). The sealing cover (7) is slidably sleeved on the outside of the central tube (8). Multiple connecting rods (9) are connected to one side of the sealing cover (7). A top cover (10) is connected to the other end of the connecting rods (9). A sealing groove (11) is provided in the sealing frame (6). A sealing ring (12) is fixedly provided on the inside of the sealing cover (7). A spring (13) is movably sleeved on the outside of the central tube (8). The two ends of the spring (13) are connected to the sealing cover (7) and the top cover (10) respectively.

2. The cavity venting assembly of a high-precision automotive parts special mold according to claim 1, characterized in that: The exhaust groove (4) is located at the non-surface junction.

3. The cavity venting assembly of a high-precision automotive parts special mold according to claim 2, characterized in that: The discharge groove (3) is connected to the exhaust groove (4).

4. A cavity venting assembly for a high-precision automotive parts mold according to any one of claims 1-3, characterized in that: The inner wall of the sealing cover (7) and the top cover (10) are both designed with a conical structure.

5. The cavity venting assembly of a high-precision automotive parts special mold according to claim 4, characterized in that: The central through pipe (8) has a central through groove (14) inside.

6. The cavity venting assembly of a high-precision automotive parts special mold according to claim 5, characterized in that: The central tube (8) has multiple side passage grooves (15) on its side wall.

7. The cavity venting assembly of a high-precision automotive parts special mold according to claim 6, characterized in that: A connecting frame (16) is fixedly provided in the exhaust pipe (5), and the other end of the central pipe (8) is fixedly connected to the connecting frame (16).

8. The cavity venting assembly of a high-precision automotive parts special mold according to claim 7, characterized in that: Multiple sealing rings (12) and sealing grooves (11) are provided, and the sealing rings (12) are made of rubber.

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