Vehicle bumper machining die
By introducing spring and limit ring assemblies into the automotive bumper processing mold to regulate the flow rate, the problem of material waste caused by excessive flow rate during injection molding is solved, resulting in more efficient production and higher quality products.
Patent Information
- Application Number
- CN202422895130.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2034-11-27
AI Technical Summary
Existing automotive bumper processing molds have excessively high flow rates during injection molding, causing plastic melt to overflow, resulting in material waste and increased cleaning work and costs.
A mold for processing automotive bumpers was designed. By introducing a spring and a limiting ring assembly into the mold, the flow rate of the feed pipe is adjusted to prevent the plastic melt from overflowing. The gas emission is controlled by a guide rod to prevent product deformation and warping.
It effectively regulates injection flow rate, avoids material waste, reduces production costs, and improves product dimensional accuracy and safety.
Smart Images
Figure CN223820993U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of processing mold technology, and in particular to a processing mold for automotive bumpers. Background Technology
[0002] Automotive bumper processing molds are tools that, through specific structures and cavities, process molten plastic raw materials into car bumpers with specific shapes, sizes, and precision requirements during injection molding. They impart precise shapes and dimensions to the plastic raw materials, ensuring the consistency and quality stability of the car bumpers and meeting the demands of large-scale, high-efficiency, and high-quality automotive production. Furthermore, the design and manufacturing precision of the molds directly affect the bumper's appearance quality, assembly performance, and mechanical properties.
[0003] In existing technologies, when most automotive bumper processing molds are injection molded after mold closing, if the flow rate is too fast, the molten plastic may overflow from the mold parting surface, gate, and other parts under strong pressure. This not only wastes materials but also increases subsequent cleaning work and costs. Therefore, in order to address the above shortcomings, a new automotive bumper processing mold is proposed to solve the above problems. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides a car bumper processing mold, which aims to improve the problem that some existing car bumper processing molds cannot adjust the flow rate during injection molding, resulting in plastic melt overflow and waste.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A car bumper processing mold includes a lower mold, with positioning rods fixedly connected to the four corners of the top side of the lower mold, a top plate fixedly connected to the top side of a plurality of positioning rods, cylinders fixedly connected to the left and right ends of the top plate, an upper mold fixedly connected to the drive ends of two cylinders, sliding plates fixedly connected to the left and right ends of the top side of the upper mold, a disc fixedly connected to the middle of the upper mold, a feed pipe rotatably connected to the middle of the upper mold, a misalignment disc fixedly connected to the inner wall of the feed pipe, a limit ring fixedly connected to the outer wall of the feed pipe, reset components for limiting the rotation of the limit ring provided on the inner walls of the four sides of the limit ring, positioning pins fixedly connected to the opposite sides of a plurality of reset components, and a feed pipe fixedly connected to the inside of the feed pipe.
[0007] As a further description of the above technical solution:
[0008] The upper mold is slidably connected to both the front and rear ends with guide rods. The top of the guide rods is provided with air vents around its perimeter. The bottom of the guide rods is fixedly connected to a positioning plate. A spring is sleeved on the outside of the guide rods.
[0009] As a further description of the above technical solution:
[0010] Both the disc and the misaligned disc have multiple feeding openings inside. The bottom side of the disc is in contact with the top side of the misaligned disc. Multiple gripping plates are fixedly connected to the outer wall of the feed pipe.
[0011] As a further description of the above technical solution:
[0012] The reset assembly includes a spring, with one end of each spring being fixedly connected to the inner wall of the limiting ring, and the other ends of each spring being fixedly connected to a limiting plate.
[0013] As a further description of the above technical solution:
[0014] The limiting ring has cavities on all four sides, the upper mold has multiple arc-shaped openings, the positioning post is slidably connected to the inside of the arc-shaped openings, and the far sides of the multiple limiting discs are respectively fixedly connected to the near sides of the multiple positioning posts.
[0015] As a further description of the above technical solution:
[0016] The upper mold has cylindrical cavities at both the front and rear ends, and the bottom end of the second spring is fixedly connected to the top side of the positioning plate.
[0017] As a further description of the above technical solution:
[0018] The outer sides of the two positioning discs are slidably connected to the inner walls of the front and rear ends of the upper mold, and the top ends of the two springs are fixedly connected to the inner walls of the front and rear ends of the upper mold, respectively.
[0019] As a further description of the above technical solution:
[0020] The top side of the lower mold is in contact with the bottom side of the upper mold, and the outer sides of the plurality of positioning rods are respectively slidably connected to the inner walls of the front and rear ends of the two sliding plates.
[0021] This utility model has the following beneficial effects:
[0022] 1. In this utility model, the spring can store elastic potential energy, and then give the positioning post a force in the opposite direction to reset it and lock it into the arc-shaped opening again. As the limiting ring rotates, it will also drive the misalignment disk to rotate, so that the misalignment disk and the feeding opening inside the disc are misaligned to adjust the flow rate of the raw material injected by the feed pipe, so as to avoid the plastic melt overflowing and causing waste due to excessive flow rate, thereby reducing production costs.
[0023] 2. In this utility model, after the internal pressure is reduced, the second spring will slowly return to its original position and push the positioning plate to slide, thereby driving the guide rod to slide until the top of the guide rod returns to the inside of the upper mold, at which point the gas emission will stop, thus avoiding problems such as deformation and warping, which would affect the dimensional accuracy and assembly performance of the product, thereby improving the safety of the product during use. Attached Figure Description
[0024] Figure 1 This is a perspective view of a vehicle bumper processing mold proposed in this utility model;
[0025] Figure 2 This is a schematic diagram of the sliding plate of a vehicle bumper processing mold proposed in this utility model.
[0026] Figure 3 This is a schematic diagram of the feed tube of a vehicle bumper processing mold proposed in this utility model.
[0027] Figure 4 for Figure 3 Enlarged view of point A in the middle;
[0028] Figure 5 This is a schematic diagram of the positioning column of a car bumper processing mold proposed in this utility model;
[0029] Figure 6 for Figure 3 Enlarged view of section B in the middle.
[0030] Legend:
[0031] 1. Lower mold; 2. Positioning rod; 3. Top plate; 4. Cylinder; 5. Upper mold; 6. Sliding plate; 7. Disc; 8. Feed pipe; 9. Offset plate; 10. Feeding opening; 11. Arc-shaped opening; 12. Holding plate; 13. Limiting ring; 14. Cavity; 15. Positioning pin; 16. Limiting plate; 17. Spring 1; 18. Feed pipe; 19. Guide rod; 20. Air outlet; 21. Cylindrical cavity; 22. Positioning plate; 23. Spring 2. Detailed Implementation
[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0033] Reference Figures 1 to 3 This utility model provides an embodiment of a vehicle bumper processing mold, including a lower mold 1. The lower mold 1 serves as the foundation of the entire mold structure, providing stable bottom support for the bumper molding. Positioning rods 2 are fixedly connected to the four corners of the top side of the lower mold 1. These positioning rods 2 are firmly bonded to the lower mold 1 through welding, providing a precise reference for subsequent mold assembly and positioning, ensuring the stability and accuracy of the mold during operation. A top plate 3 is fixedly connected to the top side of multiple positioning rods 2. The welding method between the top plate 3 and the positioning rods 2 ensures the integrity of the entire structure and allows it to withstand significant pressure and impact. Cylinders 4 are fixedly connected to both ends of the top plate 3. These two cylinders 4 provide power and stroke to meet the opening and closing requirements of the mold. An upper mold 5 is fixedly connected to the drive end of the two cylinders 4. The upper mold 5 can move smoothly up and down under the drive of the cylinders 4, realizing the opening and closing action of the mold, providing conditions for the injection molding and demolding of the bumper. The top side of the lower mold 1 is in contact with the bottom side of the upper mold 5. Sliding plates 6 are fixedly connected to both the left and right ends of the top side of the upper mold 5, and the sliding plates 6 provide guidance for the sliding of the upper mold 5. The outer sides of multiple positioning rods 2 are slidably connected to the inner walls of the front and rear ends of the two sliding plates 6, so that the upper mold 5 can slide along the positioning rods 2 during the up and down movement, which further improves the accuracy and stability of the mold opening and closing.
[0034] Reference Figures 3 to 5A disc 7 is fixedly connected to the center of the upper mold 5. The disc 7 is one of the components for conveying and distributing raw materials inside the mold. A feed pipe 8 is rotatably connected to the center of the upper mold 5. The feed pipe 8 can rotate flexibly to drive the rotation of subsequent components. A misalignment disc 9 is fixedly connected to the inner wall of the feed pipe 8. The misalignment disc 9 is connected to the inner wall of the feed pipe 8 by welding, ensuring stability during the injection molding process. Both the disc 7 and the misalignment disc 9 have multiple discharge openings 10 inside. These discharge openings 10 control the flow rate and direction of raw materials entering the mold from the feed pipe 8, ensuring uniform distribution of raw materials within the mold cavity and preventing waste caused by molten plastic overflow. Multiple arc-shaped openings 11 are provided inside the upper mold 5, providing the necessary space and conditions for subsequent positioning and motion control. The bottom side of the disc 7 contacts the top side of the misalignment disc 9, allowing the discharge openings 10 inside the disc 7 and misalignment disc 9 to adjust the injection flow rate when they intersect. Multiple grip plates 12 are fixedly connected to the outer wall of the feed pipe 8, which facilitates manual operation of the feed pipe 8 by the operator.
[0035] A limiting ring 13 is fixedly connected to the outer wall of the feed pipe 8, ensuring the stability of the feed pipe 8's rotation. Reset components are provided on the inner walls of all four sides of the limiting ring 13 to restrict its rotation. The design of the reset components allows the limiting ring 13 to return to its initial position after being subjected to a certain external force, ensuring the normal operation of the mold. Cavities 14 are provided inside all four sides of the limiting ring 13, providing space for the movement of subsequent components. Positioning pins 15 are fixedly connected to the opposite sides of multiple reset components. The external parts of the positioning pins 15 are slidably connected to the inside of the arc-shaped opening 11, allowing the positioning pins 15 to slide freely within the arc-shaped opening 11. Simultaneously, the arc-shaped opening 11 guides and restricts the movement of the positioning pins 15.
[0036] The reset assembly includes springs 17, with the proximal ends of multiple springs 17 fixedly connected to the inner walls of the limiting ring 13. Springs 17 can deform appropriately under external force and quickly return to their original shape after the force disappears. The distal ends of multiple springs 17 are fixedly connected to limiting plates 16, which transmit the spring force and cooperate with other components to achieve limiting and reset functions. The distal sides of multiple limiting plates 16 are fixedly connected to the proximal sides of multiple positioning pins 15, transmitting the spring force of the springs 17 to the positioning pins 15, ensuring that the positioning pins 15 maintain a stable position within the arc-shaped opening 11 or accurately reset under external force. A feed pipe 18 is fixedly connected inside the feed pipe 8, serving as the entry channel for raw materials into the mold.
[0037] Reference Figure 2 , Figure 3 and Figure 6The upper mold 5 has guide rods 19 slidably connected to both its front and rear ends, providing movement guidance for the guide rods 19. Each guide rod 19 has an air vent 20 around its top edge. The air vent 20 is designed to expel air from the mold cavity during injection molding, preventing air accumulation that could affect product quality. Both the front and rear ends of the upper mold 5 have cylindrical cavities 21. These cavities provide space for the movement of the guide rods 19, and their size and shape match the guide rods 19, ensuring that the guide rods 19 do not wobble or jam during movement. A positioning plate 22 is fixedly connected to the bottom end of the guide rod 19. The positioning plate 22 is connected to the guide rod 19 by welding, providing limitation and stability during the movement of the guide rod 19, preventing it from detaching from the mold. The two positioning plates 22 are slidably connected to the inner walls of the front and rear ends of the upper mold 5. This sliding connection ensures that the positioning plates 22 can move smoothly up and down inside the mold, while also limiting the range of motion of the guide rods 19. A second spring 23 is fitted around the outside of the guide rod 19 to restrict the force on the second spring 23, ensuring that the second spring 23 is evenly stressed. The top ends of the two second springs 23 are fixedly connected to the inner walls of the front and rear ends of the upper mold 5, respectively, to ensure the stability of the second springs 23. The bottom ends of the second springs 23 are fixedly connected to the top side of the positioning plate 22, so that the elastic force of the second springs 23 can be accurately applied to the positioning plate 22, thereby controlling the movement and reset of the guide rod 19.
[0038] Working principle: Start cylinder 4 and push upper mold 5 downward until it fits with lower mold 1. Then, manually hold the grip plate 12 on feed pipe 8 and rotate feed pipe 8. As feed pipe 8 rotates, it will drive limit ring 13 to rotate. At the same time, positioning post 15 will be blocked. At this time, positioning post 15 will slide and push limit plate 16 to slide synchronously. Then, squeeze spring 17, so that spring 17 can store elastic potential energy, and then give positioning post 15 a force in the opposite direction to reset and lock it into the arc opening 11 again. As limit ring 13 rotates, it will also drive misalignment plate 9 to rotate, so that misalignment plate 9 and the material discharge opening 10 inside disc 7 are misaligned to adjust the flow rate of raw material injected by feed pipe 18, avoid the plastic melt overflowing due to excessive flow rate and waste, and thus reduce production costs.
[0039] As the upper mold 5 and lower mold 1 close, a sealed space is formed inside. The pressure of this sealed space presses against the positioning plate 22, causing the positioning plate 22 to drive the guide rod 19 to slide upward and compress the spring 23. This allows the spring 23 to store elastic potential energy, which in turn gives the positioning plate 22 a force in the opposite direction to reset it. As the guide rod 19 slides upward, the vent 20 at the top of the guide rod 19 is exposed to the outside. At this time, the gas inside will pass through the guide rod 19 and be discharged to the outside through the vent 20. After the internal pressure decreases, the spring 23 will slowly reset and push the positioning plate 22 to slide, thereby driving the guide rod 19 to slide until the top of the guide rod 19 is reset inside the upper mold 5, at which point the gas discharge will stop. This avoids problems such as deformation and warping, which would affect the dimensional accuracy and assembly performance of the product, and thus improves the safety of the product during use.
[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A bumper processing die for vehicles, comprising a lower die (1), characterized in that: The top side of the lower mold (1) is fixedly connected with positioning rods (2), the top side of the plurality of positioning rods (2) is fixedly connected with a top plate (3), the left and right ends of the top plate (3) are fixedly connected with air cylinders (4), the driving end of the two air cylinders (4) is fixedly connected with an upper mold (5), the top side left and right ends of the upper mold (5) are fixedly connected with sliding plates (6), the middle part of the upper mold (5) is fixedly connected with a disc (7), the middle part of the upper mold (5) is rotatably connected with a feeding pipe (8), the inner wall of the feeding pipe (8) is fixedly connected with a staggered disc (9), the outer side wall of the feeding pipe (8) is fixedly connected with a limiting ring (13), the periphery of the inner wall of the limiting ring (13) is provided with a reset assembly for limiting the rotation of the limiting ring (13), the far side of the plurality of reset assemblies is fixedly connected with a positioning column (15), and the inside of the feeding pipe (8) is fixedly connected with a feeding pipe (18).
2. The bumper processing die for a vehicle according to claim 1, characterized by: The front and rear ends of the upper mold (5) are slidably connected with guide rods (19), the top end of the guide rod (19) is provided with a gas outlet opening (20), the bottom end of the guide rod (19) is fixedly connected with a positioning disc (22), and the outside of the guide rod (19) is sleeved with a spring (23).
3. The bumper processing die for a vehicle according to claim 1, characterized by: The inside of the disc (7) and the staggered disc (9) is provided with a plurality of discharge openings (10), the bottom side of the disc (7) is in contact with the top side of the staggered disc (9), and the outer side wall of the feeding pipe (8) is fixedly connected with a plurality of holding plates (12).
4. The bumper processing die for vehicles according to claim 1, characterized by: The reset assembly comprises a spring (17), the periphery of the limiting ring (13) is fixedly connected with a plurality of springs (17), and the far side of the plurality of springs (17) is fixedly connected with a limiting disc (16).
5. The bumper processing die for a vehicle according to claim 4, characterized by: The periphery of the limiting ring (13) is provided with a cavity (14), the inside of the upper mold (5) is provided with a plurality of arc-shaped openings (11), the outside of the positioning column (15) is slidably connected in the arc-shaped opening (11), and the far side of the plurality of limiting discs (16) is fixedly connected with the proximal side of the plurality of positioning columns (15).
6. The bumper processing die for a vehicle according to claim 2, characterized by: The front and rear ends of the upper mold (5) are provided with cylindrical cavities (21), and the bottom end of the spring (23) is fixedly connected to the top side of the positioning disc (22).
7. The bumper processing die for a vehicle according to claim 6, characterized by: The outside of the two positioning discs (22) is slidably connected to the inner wall of the front and rear ends of the upper mold (5), and the top end of the two springs (23) is fixedly connected to the inner wall of the front and rear ends of the upper mold (5).
8. The bumper processing die for vehicles according to claim 1, characterized by: The top side of the lower mold (1) is in contact with the bottom side of the upper mold (5), and the outside of the plurality of positioning rods (2) is slidably connected to the inner wall of the front and rear ends of the two sliding plates (6).