High-precision timing chain cover cap mold
By combining the push rod and the unloading rod structure, the high-precision timing chain cover mold can be quickly and automatically unloaded, solving the safety hazards of manual unloading and the high cost of robotic arms, and realizing a safe and efficient production process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING BINGXIAN MASCH MFG CO LTD
- Filing Date
- 2025-04-23
- Publication Date
- 2026-05-05
AI Technical Summary
The existing high-precision timing chain cover mold needs to be unloaded quickly after mold opening, but manual unloading poses safety hazards, while robotic arm unloading is costly and detrimental to production efficiency.
It adopts a structure of a pair of ejector rods and multiple feed rods, combined with hydraulic and electric push rods, to enable the cover to quickly detach from the mold cavity after the mold opens and be taken out by the feed rods. Combined with temperature sensor monitoring, the feed is carried out at a safe temperature.
This avoids the risk of worker burns, shortens material preparation time, reduces production costs, and ensures work efficiency and safety.
Smart Images

Figure CN224197241U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mold technology, and in particular to a high-precision timing chain cover mold. Background Technology
[0002] The high-precision timing chain cover mold is a precision injection mold used to manufacture the sealing cover of the engine timing chain system. Its core features are the use of micron-level tolerance control and integrated molding technology for complex structures to ensure the sealing performance, dimensional stability and assembly accuracy of the cover.
[0003] After the existing cover mold is opened, it needs to be unloaded quickly to ensure work efficiency. However, the newly formed cover is in a high temperature state, and manual unloading poses a significant safety hazard. On the other hand, unloading and maintenance by means of a robotic arm is too costly and not conducive to production efficiency. Utility Model Content
[0004] This utility model aims to provide a high-precision timing chain cover mold to solve the problems mentioned in the background art. This solution, through the coordinated use of a pair of ejector rods and multiple feed rods, can cause the cover to detach from the mold cavity immediately after the mold opens, and use the feed rods to quickly remove the cover, avoiding manual feeding by workers, eliminating the risk of burns, and shortening the feeding time, thus ensuring work efficiency. The overall structure of the device is simple and easy to maintain. Compared with automated equipment such as robotic arms, it has a lower cost and is more conducive to controlling production costs. At the same time, the temperature of the removed cover can be monitored by a temperature sensor, and feeding can only be done after the temperature drops to a safe range, further ensuring the personal safety of workers.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A high-precision timing chain cover mold includes a first support, a second support, a feeding platform, an upper mold, and a lower mold. Two sets of first hydraulic cylinders are connected to the first support, symmetrically arranged vertically. The upper mold and lower mold are respectively connected to the output ends of the two sets of first hydraulic cylinders. A pair of second hydraulic cylinders, symmetrically arranged vertically, are connected to the first support. The output ends of the second hydraulic cylinders are connected to push rods, which pass through the upper mold and lower mold respectively and extend into their respective cavities. An electric actuator is connected to the second support, with its output end connected to a base. A mounting plate is provided on the side of the base near the upper and lower molds. Multiple feeding rods are connected to one end of the mounting plate, positioned on one side of the middle section between the upper and lower molds.
[0007] Preferably, the upper mold has an injection hole that communicates with the mold cavity.
[0008] Preferably, the ends of the pair of push rods that are close to each other form a complete plane with the inner walls of the upper mold and the lower mold cavity, respectively.
[0009] Preferably, the number of feeding rods is set to four, and the four feeding rods are divided into two symmetrical groups in the vertical direction.
[0010] Preferably, the top rod is positioned between multiple feed rods.
[0011] Preferably, a temperature sensor is connected to the outer end of the first bracket, and the sensing end of the temperature sensor is aligned with the location of the feeding rod.
[0012] Preferably, the feeding platform is located directly below the feeding rod.
[0013] Preferably, a servo motor is connected to the base, and the mounting plate is connected to the output end of the servo motor.
[0014] The beneficial effects of this technical solution compared to existing technologies are as follows:
[0015] This solution utilizes a pair of ejector rods and multiple feed rods to detach the cover from the mold cavity immediately after mold opening. The feed rods then quickly remove the cover, eliminating the risk of burns by manual feeding and shortening the feeding time, thus ensuring work efficiency. The device has a simple overall structure, is easy to maintain, and is less expensive than automated equipment such as robotic arms, making it more conducive to controlling production costs. Furthermore, the temperature of the removed cover can be monitored by a temperature sensor, and feeding can only resume after the temperature has dropped to a safe range, further ensuring the personal safety of workers. Attached Figure Description
[0016] Figure 1 A schematic diagram of the overall structure of this utility model;
[0017] Figure 2 A schematic diagram of the unfolded state of the upper and lower molds provided by this utility model;
[0018] Figure 3 This is a schematic diagram of the arrangement of the feeding rods provided by this utility model;
[0019] Figure 4 This is a schematic diagram illustrating the process of removing the cover provided by this utility model.
[0020] Reference numerals in the attached drawings: 1. First support; 2. First hydraulic cylinder; 3. Upper mold; 4. Lower mold; 5. Second hydraulic cylinder; 6. Push rod; 7. Second support; 8. Electric push rod; 9. Base; 10. Servo motor; 11. Mounting plate; 12. Unloading rod; 13. Unloading platform; 14. Temperature sensor. Detailed Implementation
[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:
[0022] like Figure 1-4 The high-precision timing chain cover mold shown includes a first support 1, a second support 7, a feeding platform 13, an upper mold 3, and a lower mold 4. Two sets of first hydraulic cylinders 2 are connected to the first support 1. The two sets of first hydraulic cylinders 2 are symmetrical to each other in the vertical direction. The upper mold 3 and the lower mold 4 are respectively connected to the output ends of the two sets of first hydraulic cylinders 2. A pair of second hydraulic cylinders 5 are connected to the first support 1. The output ends of the second hydraulic cylinders 5 are connected to push rods 6. The pair of push rods 6 pass through the upper mold 3 and the lower mold 4 and extend into the mold cavities of the upper mold 3 and the lower mold 4. An electric push rod 8 is connected to the second support 7. The output end of the electric push rod 8 is connected to a base 9. An mounting plate 11 is provided on the side of the base 9 near the upper mold 3 and the lower mold 4. A plurality of feeding rods 12 are connected to one end of the mounting plate 11. The plurality of feeding rods 12 are located on one side of the middle position of the upper mold 3 and the lower mold 4.
[0023] High-precision timing chain cover mold is a precision injection mold used to manufacture sealing covers for engine timing chain systems. Its core features are the use of micron-level tolerance control and integrated molding technology for complex structures to ensure the cover's sealing performance, dimensional stability, and assembly accuracy. Existing cover molds require rapid unloading after mold opening to ensure work efficiency. However, the newly formed cover is at a high temperature, and manual unloading poses significant safety hazards. On the other hand, unloading and maintenance using robotic arms is too costly and detrimental to production efficiency.
[0024] In this scheme, the opening and closing of the upper mold 3 and the lower mold 4 are controlled by two sets of first hydraulic cylinders 2. During mold opening, the two sets of first hydraulic cylinders 2 control the upper mold 3 and the lower mold 4 to move away from each other. At this time, a pair of ejector rods 6 remain stationary, forcing the cover inside the mold cavity to be confined between the pair of ejector rods 6. Figure 2As shown in Figure 00, this setup ensures that the cover immediately detaches from the mold cavities of the upper mold 3 and lower mold 4 after mold opening, preventing adhesion. The user then activates the electric push rod 8 to move the base 9, causing multiple ejector rods 12 to enter between the upper mold 3 and lower mold 4 and reach the upper and lower sides of the cover. Next, the user activates a pair of second hydraulic cylinders 5, forcing a pair of ejector rods 6 to move away from each other. At this point, the cover detaches from the ejector rods 6 and naturally falls onto the ejector rods 12. The user can then use the electric push rod 8 to reset the ejector rods 12 and the cover to move to the outside of the mold 34 and lower mold 4 for cooling. This allows the upper mold 3 and lower mold 4 to continue injection molding. This setup completely eliminates the need for manual ejection, reducing the risk of burns. It also allows the cover to be removed immediately after mold opening, shortening ejection time and ensuring work efficiency. During the cover's cooling process, other methods, such as the use of a fan, can be used to accelerate cooling.
[0025] The upper mold 3 has an injection hole that communicates with the mold cavity.
[0026] In this solution, after the upper mold 3 and the lower mold 4 are closed, the user can inject molten material into the mold cavity through the injection hole to form the cover.
[0027] The ends of a pair of ejector pins 6 that are close to each other form a complete plane with the inner walls of the upper mold 3 and the lower mold 4 respectively.
[0028] In this design, the ejector pin 6 forms a complete plane with the inner walls of the upper mold 3 and the lower mold 4, thus avoiding leaving marks on the molded cover.
[0029] The number of feeding rods 12 is set to four, and the four feeding rods 12 are divided into two symmetrical groups in the vertical direction. The top rod 6 is set between the multiple feeding rods 12.
[0030] In this design, after multiple feed rods 12 extend between the upper mold 3 and the lower mold 4, the multiple feed rods 12 will be distributed symmetrically on the upper and lower sides of the cover. Thus, when a pair of push rods 6 move away from each other, even if the cover and the push rods 6 are stuck together, they will be blocked by the feed rods 12 on the upper and lower sides, causing the cover to fall off and ensuring that the cover is stably stopped on the feed rods 12.
[0031] A temperature sensor 14 is connected to the outer end of the first bracket 1. The sensing end of the temperature sensor 14 is aligned with the position of the feeding rod 12. The feeding platform 13 is located directly below the feeding rod 12. A servo motor 10 is connected to the base 9. The mounting plate 11 is connected to the output end of the servo motor 10.
[0032] In this solution, the temperature sensor 14 and the servo motor 10 are connected through a processor. After the multiple unloading rods 12 move the cover out of the upper mold 3 and the lower mold 4, the temperature sensor 14 can monitor the cover temperature in real time. Once the temperature drops to a safe range, the temperature sensor 14 can send a command to the processor, which in turn starts the servo motor 10 to rotate, forcing the multiple unloading rods 12 to tilt, thereby causing the cover to fall onto the unloading platform 13. The operator can then safely retrieve the cover from the unloading platform 13.
[0033] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A high-precision timing chain cover mold, characterized in that: The system includes a first support (1), a second support (7), a feeding platform (13), an upper mold (3), and a lower mold (4). Two sets of first hydraulic cylinders (2) are connected to the first support (1), and the two sets of first hydraulic cylinders (2) are symmetrical about each other in the vertical direction. The upper mold (3) and the lower mold (4) are respectively connected to the output ends of the two sets of first hydraulic cylinders (2). A pair of second hydraulic cylinders (5) that are symmetrical about each other in the vertical direction are connected to the first support (1). A push rod (6) is connected to the output end of each of the second hydraulic cylinders (5). The push rod (6) passes through the upper mold (3) and the lower mold (4) respectively and extends into the mold cavity of the upper mold (3) and the lower mold (4). The second bracket (7) is connected to an electric push rod (8). The output end of the electric push rod (8) is connected to a base (9). The base (9) is provided with a mounting plate (11) on the side close to the upper mold (3) and the lower mold (4). One end of the mounting plate (11) is connected to a plurality of feeding rods (12). The plurality of feeding rods (12) are located on one side of the middle position of the upper mold (3) and the lower mold (4).
2. The high-precision timing chain cover mold as described in claim 1, characterized in that: The upper mold (3) has an injection hole that communicates with the mold cavity.
3. The high-precision timing chain cover mold as described in claim 1, characterized in that: The ends of the pair of push rods (6) that are close to each other form a complete plane with the inner wall of the mold cavity of the upper mold (3) and the lower mold (4), respectively.
4. The high-precision timing chain cover mold as described in claim 1, characterized in that: The number of the feeding rods (12) is set to four, and the four feeding rods (12) are divided into two symmetrical groups in the vertical direction.
5. A high-precision timing chain cover mold as described in claim 1, characterized in that: The top rod (6) is positioned between multiple feed rods (12).
6. The high-precision timing chain cover mold as described in claim 1, characterized in that: A temperature sensor (14) is connected to the outer end of the first bracket (1), and the sensing end of the temperature sensor (14) is aligned with the position of the feeding rod (12).
7. A high-precision timing chain cover mold as described in claim 1, characterized in that: The feeding platform (13) is located directly below the feeding rod (12).
8. A high-precision timing chain cover mold as described in claim 1, characterized in that: A servo motor (10) is connected to the base (9), and the mounting plate (11) is connected to the output end of the servo motor (10).