Precise trimming die for forging engine connecting rod
By designing an adjustable precision cutting die for engine connecting rod forging, the problems of operational obstruction and insufficient precision during connecting rod cutting were solved, achieving efficient and stable cutting operations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-15
- Publication Date
- 2026-03-13
AI Technical Summary
In the existing process of trimming engine connecting rods, workers need to operate in the gaps between the various components of the mold, which hinders the operation, affects work efficiency, and makes it difficult to remove the trimmed connecting rods, thus making it difficult to maintain high precision.
A precision edge-cutting die for forging engine connecting rods was designed. By setting a drive motor and a threaded rod, the horizontal position of the first die can be adjusted. Combined with components such as a buffer plate, a limit rod, and a lubrication sleeve, the flexibility and stability of the die are improved, ensuring the precise positioning and convenient operation of the connecting rod.
It improves the efficiency of engine connecting rod trimming, extends the service life of the mold, reduces maintenance requirements, and enhances trimming accuracy and stability.
Smart Images
Figure CN223989020U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of engine connecting rod trimming technology, specifically a precision trimming mold for engine connecting rod forging. Background Technology
[0002] Engine connecting rod is one of the main transmission mechanisms of automobile engine. Its production process requires sequential steps such as blanking, bar heating, roll forging, closed die forging, trimming and punching, and shaping. After closed die forging, excess blanks will appear around the connecting rod, forming flash. In order to separate the connecting rod from the flash, it needs to enter the next trimming process.
[0003] The existing method for trimming engine connecting rods mostly involves manually clamping the connecting rod with flash and placing it in the lower trimming die of the trimming machine for stamping, ultimately separating the connecting rod from the flash. However, during the process of placing the engine connecting rod, the operator needs to operate in the gaps between the various components of the die, which will be obstructed by the components of the die and affect work efficiency.
[0004] Therefore, this utility model provides a precision edge-cutting die for engine connecting rod forging. Utility Model Content
[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.
[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A precision trimming die for engine connecting rod forging, comprising a trimming table, with feet fixedly connected to the bottom of the trimming table, and multiple feet arranged correspondingly; a support column fixedly connected to the top of the trimming table, and multiple support columns arranged correspondingly; a fixing plate fixedly connected to the top of the multiple support columns; a hydraulic cylinder fixedly connected to the top of the fixing plate, and a second die fixedly connected to the output end of the hydraulic cylinder; a first die provided on the top of the trimming table; and a first fixing block fixedly connected to the bottom of the first die. Furthermore, the first fixing block is threadedly connected to a threaded rod; a drive motor is provided at the end of the threaded rod, and the drive motor is fixedly connected to the side wall of the cutting table; a placement groove is opened on the surface of the first mold, and multiple placement grooves are arranged in a linear array; a square groove is opened at the bottom of the cutting table; this step, by setting the drive motor and the threaded rod, realizes the horizontal position adjustment of the first mold, improves the flexibility of the traditional engine connecting rod cutting mold, provides convenience for the workers' feeding and unloading operations, helps to solve the problem of connecting rods being difficult to remove after cutting, and increases work efficiency.
[0007] Preferably, a movable rod is slidably connected to the top of the trimming table, and multiple movable rods are arranged correspondingly; a buffer plate is fixedly connected to the top of the movable rod, and the buffer plate is positioned corresponding to the positions of the second mold and the first mold; a return spring is fixedly connected between the buffer plate and the trimming table, and multiple return springs are positioned corresponding to the positions of the movable rods; this step, by setting the buffer plate to assist the first mold in bearing stress, helps to prevent the second mold from directly impacting the top of the first mold, thereby providing protection for the first mold, the second mold and their adjacent components, which helps to extend the service life of each component, reduce maintenance requirements, and improve the accuracy of the trimming operation of the engine connecting rod forging.
[0008] Preferably, a second fixing block is fixedly connected to the bottom of the first mold, and the two second fixing blocks are symmetrically arranged; a first limiting rod is slidably connected inside the two second fixing blocks, and the two ends of the two first limiting rods are fixed to the inner sidewall of the cutting table; this step restricts the movement direction and posture of the first mold by setting the second fixing block and the first limiting rod, which helps to avoid the first mold from tilting or detaching, improves the stability and durability of the mold, helps to extend its service life, reduce maintenance needs, and maintain the cutting accuracy.
[0009] Preferably, a connecting block is fixedly connected to the top of the second mold, and multiple connecting blocks are arranged in a corresponding manner; a second limiting rod is fixedly connected to the top of the multiple connecting blocks, and the second limiting rod passes through the top of the fixing plate; this step restricts the movement of the second mold by setting the second limiting rod, thereby making the movement of the second mold more stable, which helps to avoid the second mold tilting during the movement and helps to improve the cutting accuracy.
[0010] Preferably, a limiting post is fixedly connected to the top of the placement groove, and the size settings of the multiple limiting posts correspond to the connecting rod. This step, by using the limiting post fixedly connected to the top of the placement groove to assist the worker in positioning the connecting rod, reduces the difficulty of placing the connecting rod, which is conducive to improving the accuracy of the connecting rod cutting edge and improving the efficiency of the connecting rod cutting edge operation.
[0011] Preferably, a connecting piece is fixed to the bottom of the foot support; the top of the connecting piece is provided with a through hole, and the two through holes are arranged symmetrically; this step improves the stability of the cutting mold by setting the connecting piece to connect the mold to the ground, which helps to reduce mold shaking, maintain the horizontal posture of the mold, and maintain the high precision of the cutting operation.
[0012] Preferably, the fixed plate is provided with a lubrication sleeve inside, and multiple lubrication sleeves are arranged corresponding to the positions of the second limiting rod. This step reduces the friction coefficient between components by setting the lubrication sleeve, which helps to alleviate the wear of the fixed plate and the second limiting rod, extend their service life, and reduce the maintenance requirements of the mold.
[0013] The beneficial effects of this utility model are as follows:
[0014] 1. The precision trimming die for engine connecting rod forging described in this utility model achieves adjustable horizontal position of the first die by setting a drive motor and a threaded rod, which improves the flexibility of traditional engine connecting rod trimming dies, provides convenience for workers in feeding and unloading materials, helps solve the problem of connecting rods being difficult to remove after trimming, and increases work efficiency.
[0015] 2. The precision trimming die for engine connecting rod forging described in this utility model, by setting a buffer plate to assist the first die in bearing stress, helps to prevent the second die from directly impacting the top of the first die, thereby providing protection for the first die, the second die and their adjacent components, which helps to extend the service life of each component, reduce maintenance requirements, and improve the precision of engine connecting rod forging trimming operations. Attached Figure Description
[0016] The present invention will be further described below with reference to the accompanying drawings.
[0017] Figure 1 This is a perspective view of the present invention;
[0018] Figure 2 This is a schematic diagram of the cutting edge stage in this utility model;
[0019] Figure 3 This is a schematic diagram of the structure of the first mold in this utility model;
[0020] Figure 4 This is a structural schematic diagram of the fixing plate in this utility model.
[0021] In the diagram: 1. Trimming table; 2. Support column; 3. Fixing plate; 4. Hydraulic cylinder; 5. First mold; 6. Placement slot; 7. First fixing block; 8. Second fixing block; 9. Limiting column; 10. Foot support; 11. Connecting piece; 12. Movable rod; 13. Return spring; 14. Buffer plate; 15. Drive motor; 16. Threaded rod; 17. First limiting rod; 18. Square groove; 19. Second mold; 20. Connecting block; 21. Second limiting rod; 22. Lubrication sleeve. Detailed Implementation
[0022] 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 skilled in the art without creative effort are within the protection scope of the present utility model.
[0023] Specific implementation examples are given below.
[0024] like Figures 1 to 4 As shown, an embodiment of the present invention provides a precision trimming die for forging engine connecting rods, comprising a trimming table 1, with foot supports 10 fixedly connected to the bottom of the trimming table 1, and multiple foot supports 10 being arranged in a corresponding manner; a support column 2 is fixedly connected to the top of the trimming table 1, and multiple support columns 2 being arranged in a corresponding manner; a fixing plate 3 is fixedly connected to the top of the multiple support columns 2; a hydraulic cylinder 4 is fixedly connected to the top of the fixing plate 3, and a second die 19 is fixedly connected to the output end of the hydraulic cylinder 4; a first die 5 is provided on the top of the trimming table 1; a first fixing block 7 is fixedly connected to the bottom of the first die 5, and the first... The fixing block 7 is threadedly connected to a threaded rod 16; a drive motor 15 is provided at the end of the threaded rod 16, and the drive motor 15 is fixedly connected to the side wall of the trimming table 1; the surface of the first mold 5 is provided with a placement groove 6, and multiple placement grooves 6 are arranged in a linear array; the bottom of the trimming table 1 is provided with a square groove 18; during operation, the operator can use the stamping structure composed of the hydraulic cylinder 4, the first mold 5, and the second mold 19 to perform the trimming operation of the engine connecting rod. During the process, the operator can first place the engine connecting rod with flash on the first mold 5. In the multiple placement slots 6 at the top, since the bottom of the first mold 5 is fixedly connected to the first fixing block 7, and the first fixing block 7 is threadedly connected to the threaded rod 16, the operator can adjust the position of the first mold 5 by controlling the drive motor 15, thereby making it easier to place and pick up the engine connecting rod. Subsequently, the operator can drive the hydraulic cylinder 4, causing the second mold 19 fixed to the output end of the hydraulic cylinder 4 to move downward and finally contact the first mold 5, thereby completing the connecting rod trimming operation. In addition, the multiple support columns 2 fixed between the trimming table 1 and the support column 2 serve to fix the fixing plate 3 and the connecting components of the fixing plate 3. The multiple foot supports 10 fixed to the bottom of the trimming table 1 provide overall support. The trimming debris accumulated on the top of the trimming table 1 can fall to the ground through the square groove 18. This step, by setting the drive motor 15 and the threaded rod 16, makes the horizontal position of the first mold 5 adjustable, improves the flexibility of the traditional engine connecting rod trimming mold, provides convenience for the operator's feeding and unloading operations, helps to solve the problem of the connecting rod being difficult to remove after trimming, and increases work efficiency.
[0025] like Figure 2As shown, a movable rod 12 is slidably connected to the top of the cutting table 1, and multiple movable rods 12 are arranged correspondingly; a buffer plate 14 is fixedly connected to the top of the corresponding movable rod 12, and the buffer plate 14 is positioned corresponding to the second mold 19 and the first mold 5; a return spring 13 is fixedly connected between the buffer plate 14 and the cutting table 1, and multiple return springs 13 are arranged corresponding to the positions of the movable rods 12; during operation, whenever the second mold 19 begins to move downwards, since the height of the two buffer plates 14 is higher than that of the first mold 5, the two buffer plates 14 located at the top of the cutting table 1 will first contact the bottom of the second mold 19, and the contact occurs. Subsequently, the second mold 19 will descend further, and during this process, multiple return springs 13 will be gradually compressed, reducing the stress on the second mold 19 from the hydraulic cylinder 4. Ultimately, the stress on the engine connecting rod from the second mold 19 will also be reduced. This step, by setting a buffer plate 14 to assist the first mold 5 in bearing stress, helps to prevent the second mold 19 from directly impacting the top of the first mold 5, thereby protecting the first mold 5, the second mold 19, and their adjacent components, extending the service life of each component, reducing maintenance requirements, and improving the accuracy of the engine connecting rod forging and trimming operation.
[0026] like Figure 2 As shown, a second fixing block 8 is fixedly connected to the bottom of the first mold 5, and the two second fixing blocks 8 are symmetrically arranged. A first limiting rod 17 is slidably connected inside the two second fixing blocks 8, and the two ends of the two first limiting rods 17 are fixed to the inner side wall of the cutting table 1. During operation, whenever the first mold 5 slides on the top of the cutting table 1, the two second fixing blocks 8 fixed to the bottom of the cutting table 1 will contact and rub against the first limiting rods 17 fixed to the inner side wall of the cutting table 1. At this time, the first limiting rods 17 can restrict the movement and posture of the second fixing blocks 8 by themselves, so as to prevent the second fixing blocks 8 from shifting. This step, by setting the second fixing blocks 8 and the first limiting rods 17 to restrict the movement direction and posture of the first mold 5, helps to prevent the first mold 5 from tilting or falling off, improves the stability and durability of the mold, helps to extend its service life, reduce maintenance needs, and maintain the cutting accuracy.
[0027] like Figure 4As shown, a connecting block 20 is fixedly connected to the top of the second mold 19, and multiple connecting blocks 20 are arranged correspondingly; a second limiting rod 21 is fixedly connected to the top of the multiple connecting blocks 20, and the second limiting rod 21 passes through the top of the fixing plate 3; during operation, whenever the second mold 19 is driven by the output end of the hydraulic cylinder 4 to move vertically, the second limiting rod 21 fixed to the top of the second mold 19 will contact the fixing plate 3, thereby restricting the movement of the second mold 19. The connecting block 20 fixed between the second mold 19 and the second limiting rod 21 increases the connection strength between the two by increasing the contact area between them; this step, by setting the second limiting rod 21 to restrict the movement of the second mold 19, makes the movement of the second mold 19 more stable, which helps to prevent the second mold 19 from tilting during the movement and helps to improve the cutting accuracy.
[0028] like Figure 3 As shown, the top of the placement groove 6 is fixed with limiting posts 9, and the size of the multiple limiting posts 9 corresponds to the size of the connecting rod. During operation, when the operator places the connecting rod inside the placement groove 6, the two through holes of the connecting rod can be aligned with the corresponding limiting posts 9 to fix the position of the connecting rod. The size of the limiting post 9 is smaller than the size of the through hole of the connecting rod. This step, by fixing the limiting posts 9 to the top of the placement groove 6 to assist the operator in positioning the connecting rod, reduces the difficulty of placing the connecting rod, and helps to improve the accuracy of the connecting rod cutting edge and improve the efficiency of the connecting rod cutting edge operation.
[0029] like Figure 1 and Figure 2 As shown, a connecting piece 11 is fixedly connected to the bottom of the foot support 10; the top of the connecting piece 11 has a through hole, and the two through holes are symmetrically arranged; during operation, the operator can use bolts to pass through the through holes of the connecting piece 11 to fix the connecting piece 11 to the ground, thereby connecting the mold to the ground; this step, by setting the connecting piece 11 to connect the mold to the ground, improves the stability of the cutting mold, helps to reduce mold shaking, maintain the horizontal posture of the mold, and maintain the high precision of the cutting operation.
[0030] like Figure 1 and Figure 4 As shown, the fixed plate 3 is provided with a lubrication sleeve 22 inside, and multiple lubrication sleeves 22 are arranged corresponding to the positions of the second limiting rod 21. During operation, whenever the second limiting rod 21 moves together with the second mold 19, the multiple lubrication sleeves 22 inside the fixed plate 3 will replace the fixed plate 3 to rub against the second limiting rod 21, thereby reducing the friction force on the second limiting rod 21. This step reduces the friction coefficient between components by setting the lubrication sleeves 22, which helps to alleviate the wear of the fixed plate 3 and the second limiting rod 21, extend their service life, and reduce the maintenance requirements of the mold.
[0031] During operation, workers can use a stamping structure consisting of a hydraulic cylinder 4, a first mold 5, and a second mold 19 to trim the engine connecting rod. First, the worker places the engine connecting rod with the trimmed edge into multiple slots 6 on the top of the first mold 5. Since a first fixing block 7 is fixed to the bottom of the first mold 5, and the first fixing block 7 is threadedly connected to a threaded rod 16, the worker can adjust the position of the first mold 5 by controlling the drive motor 15, thus facilitating the placement and removal of the engine connecting rod. Then, the worker drives the hydraulic cylinder 4, causing the second mold 19, fixed to the output end of the hydraulic cylinder 4, to move downwards and eventually contact the first mold 5, thus completing the trimming process. In the connecting rod edge trimming operation, multiple support columns 2 fixed between the edge trimming table 1 and the support column 2 serve to fix the fixing plate 3 and the connecting components of the fixing plate 3. Multiple foot supports 10 fixed to the bottom of the edge trimming table 1 provide overall support. Edge trimming debris accumulated on the top of the edge trimming table 1 can fall to the ground through the square groove 18. Whenever the second mold 19 begins to move downward, since the height of the two buffer plates 14 is higher than that of the first mold 5, the two buffer plates 14 located on the top of the edge trimming table 1 will first contact the bottom of the second mold 19. After contact, the second mold 19 will further descend. During this process, multiple return springs 13 will be gradually compressed, and the stress on the second mold 19 from the hydraulic cylinder 4 will decrease. Ultimately, the stress on the engine connecting rod from the second mold 19 is also reduced. Whenever the first mold 5 slides on the top of the cutting table 1, the two second fixing blocks 8 fixed to the bottom of the cutting table 1 will contact and rub against the first limiting rod 17 fixed to the inner wall of the cutting table 1. At this time, the first limiting rod 17 can restrict the movement and posture of the second fixing blocks 8 by itself, preventing the second fixing blocks 8 from shifting. Whenever the second mold 19 is driven by the output end of the hydraulic cylinder 4 to move vertically, the second limiting rod 21 fixed to the top of the second mold 19 will contact the fixing plate 3, thereby restricting the movement of the second mold 19. Among them, the second limiting rod 21 fixed to the top of the second mold 19 and the fixing plate 3 will contact the fixing plate 3, thereby restricting the movement of the second mold 19. The connecting block 20 between the second limiting rods 21 increases the connection strength by increasing the contact area between the two. When the operator places the connecting rod inside the placement groove 6, the two through holes of the connecting rod can be aligned with the corresponding limiting posts 9 to fix the position of the connecting rod. The size of the limiting post 9 is smaller than the size of the through hole of the connecting rod. The operator can use bolts to pass through the through hole of the connecting piece 11 to fix the connecting piece 11 to the ground, thereby connecting the mold to the ground. Whenever the second limiting rod 21 moves together with the second mold 19, the multiple lubrication sleeves 22 set inside the fixing plate 3 will replace the fixing plate 3 to rub against the second limiting rod 21, thereby reducing the friction force on the second limiting rod 21.
[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. An engine connecting rod precision trimming die for forging, comprising a trimming table (1), characterized in that: The bottom of the trimming table (1) is fixedly connected with a stretcher (10), and a plurality of the stretchers (10) are correspondingly arranged; the top of the trimming table (1) is fixedly connected with a support column (2), and a plurality of the support columns (2) are correspondingly arranged; the top of a plurality of the support columns (2) is fixedly connected with a fixed plate (3); the top of the fixed plate (3) is fixedly connected with a hydraulic cylinder (4), and the output end of the hydraulic cylinder (4) is fixedly connected with a second mold (19); the top of the trimming table (1) is provided with a first mold (5); the bottom of the first mold (5) is fixedly connected with a first fixed block (7), and the first fixed block (7) is threadedly connected with a threaded rod (16); the end of the threaded rod (16) is provided with a driving motor (15), and the driving motor (15) is fixedly connected to the side wall of the trimming table (1); the surface of the first mold (5) is provided with a placing groove (6), and a plurality of the placing grooves (6) are linearly arranged; the bottom of the trimming table (1) is provided with a square groove (18).
2. An engine connecting rod precision trimming die for forging as set forth in claim 1, wherein: The top of the trimming table (1) is slidably connected with a movable rod (12), and a plurality of the movable rods (12) are correspondingly arranged; the top of the movable rod (12) is fixedly connected with a buffer plate (14), and the buffer plate (14) is arranged corresponding to the positions of the second mold (19) and the first mold (5); the buffer plate (14) and the trimming table (1) are fixedly connected with a reset spring (13), and a plurality of the reset springs (13) are arranged corresponding to the positions of the movable rods (12).
3. The precision trimming die for forging a connecting rod of an engine as set forth in claim 1, wherein: The bottom of the first mold (5) is fixedly connected with a second fixed block (8), and two second fixed blocks (8) are symmetrically arranged; the inside of the two second fixed blocks (8) is slidably connected with a first limiting rod (17), and the two ends of the two first limiting rods (17) are fixedly connected to the inner side wall of the trimming table (1).
4. The precision trimming die for forging a connecting rod of an engine as set forth in claim 2, wherein: The top of the second mold (19) is fixedly connected with a connecting block (20), and a plurality of the connecting blocks (20) are correspondingly arranged; the top of a plurality of the connecting blocks (20) is fixedly connected with a second limiting rod (21), and the second limiting rod (21) penetrates through the top of the fixed plate (3).
5. The precision trimming die for forging a connecting rod of an engine as set forth in claim 1, wherein: The top of the placing groove (6) is fixedly connected with a limiting column (9), and a plurality of the limiting columns (9) are arranged corresponding to the sizes of the connecting rods.
6. The precision trimming die for forging a connecting rod of an engine as set forth in claim 1, wherein: The bottom of the stretcher (10) is fixedly connected with a connecting piece (11); the top of the connecting piece (11) is provided with a through hole, and two through holes are symmetrically arranged.
7. The precision trimming die for forging a connecting rod of an engine as set forth in claim 1, wherein: The inside of the fixed plate (3) is provided with a lubricating sleeve (22), and a plurality of the lubricating sleeves (22) are arranged corresponding to the positions of the second limiting rods (21).