A multi-station punching die for motor stator laminations

Abstract

This utility model relates to the field of mold technology, specifically a multi-station punching mold for motor stator laminations. It includes a frame, with a hydraulic telescopic rod fixedly mounted on the top of the frame. The driving end of the hydraulic telescopic rod passes through the frame and extends into its interior. A moving mold is fixedly mounted on the driving end of the hydraulic telescopic rod. This multi-station punching mold for motor stator laminations utilizes the coordinated use of a frame, worktable, groove, servo motor, fixed mold, moving mold, hydraulic telescopic rod, Geneva wheel mechanism, drive plate, slot, rotating arm, drive pin, rotating shaft, Geneva wheel, drive groove, and positioning groove. It employs a collaborative working mode between the moving mold and multiple fixed molds. The intermittent rotation of the worktable is achieved by switching between continuous rotation of the drive plate and intermittent rotation of the Geneva wheel, allowing the fixed molds to be sequentially conveyed to the area below the moving mold. The punching process is completed during the self-locking period of the Geneva wheel mechanism, ensuring processing efficiency while providing workers with ample time for loading and unloading.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically a multi-station punching mold for motor stator laminations. Background Technology

[0002] In modern industrial production, electric motors, as key equipment for converting electrical energy into mechanical energy, are widely used in many fields such as automobiles, home appliances, and aerospace. The performance of an electric motor directly affects the operating efficiency and stability of various equipment, and the stator laminations, as one of the core components of an electric motor, play a crucial role in the overall performance of the motor due to their quality and production efficiency.

[0003] Traditional motor stator lamination punching dies mainly adopt a one-to-one fixed die and moving die structure, that is, each stator lamination requires a corresponding fixed die and moving die. This results in the punching efficiency being directly linked to the efficiency of manual loading and unloading, which limits the processing efficiency and prevents it from being improved. This not only wastes time, but also increases processing and production costs.

[0004] Therefore, it is necessary to provide a multi-station punching die for motor stator laminations to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a multi-station punching die for motor stator laminations to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A multi-station punching die for motor stator laminations includes:

[0008] A frame, on the top of which a hydraulic telescopic rod is fixedly installed, and the driving end of the hydraulic telescopic rod passes through the frame and extends into the interior of the frame. A moving mold is fixedly installed at the driving end of the hydraulic telescopic rod. A rotating shaft is rotatably installed at the bottom of the interior of the frame. A worktable is fixedly installed at the top of the rotating shaft. Several fixed molds are fixedly installed on the side of the worktable.

[0009] The bottom of the frame is provided with a groove on the rear side of the rotating shaft. A servo motor is fixedly installed inside the groove, and a grooved wheel mechanism is provided between the drive end of the servo motor and the rotating shaft.

[0010] Preferably, a guide rod is fixedly installed at the rear inside the frame, a sliding sleeve is slidably sleeved on the outer wall of the guide rod, and a connecting arm is fixedly installed between the sliding sleeve and the moving mold.

[0011] Preferably, a support platform is fixedly installed on the rear side of the bottom inside the frame, and the top of the support platform slides in contact with the bottom of the workbench.

[0012] Preferably, a plurality of ball bearings are movably mounted on the top of the support platform, and the ball bearings are in rolling contact with the bottom of the worktable.

[0013] Preferably, the grooved wheel mechanism includes a drive plate and a grooved wheel, and the grooved wheel is fixedly installed on the outer wall of the rotating shaft. The drive plate is fixedly connected to the drive end of the servo motor. The outer side of the grooved wheel is respectively provided with drive grooves and positioning grooves corresponding to the fixed mold position and quantity. The outer side of the drive plate is provided with a slot. The bottom of the drive plate is fixedly installed with a rotating arm corresponding to the slot position, and the top of the rotating arm is fixedly installed with a drive pin.

[0014] Preferably, the drive plate slides in contact with the positioning groove, and the position of the drive pin is adapted to the position of the drive groove.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model utilizes a frame, worktable, groove, servo motor, fixed mold, moving mold, hydraulic telescopic rod, Geneva wheel mechanism, drive plate, slot, rotating arm, drive pin, rotating shaft, Geneva wheel, drive groove, and positioning groove in coordination. It employs a collaborative working mode between the moving mold and multiple fixed molds. The intermittent rotation of the worktable is achieved by switching between continuous rotation of the drive plate and intermittent rotation of the Geneva wheel, allowing the fixed molds to be sequentially conveyed to the bottom of the moving mold. The punching process is completed during the self-locking period of the Geneva wheel mechanism, ensuring processing efficiency while providing ample loading and unloading time for workers. Furthermore, it effectively reduces processing and production costs without sacrificing efficiency, thus improving the practicality and economy of the equipment.

[0017] 2. This utility model utilizes the coordinated use of a guide rod, a sliding sleeve, and a connecting arm. During the punching operation, driven by a hydraulic telescopic rod, the moving die moves vertically and engages with the fixed die. The vertical displacement of the moving die causes the connecting arm to move synchronously. The connecting arm is connected to the sliding sleeve, and its movement causes the sliding sleeve to slide relative to the outer wall of the guide rod. The sliding pair formed by the guide rod and the sliding sleeve provides precise guidance and limitation for the vertical movement of the moving die, effectively constraining the degrees of freedom of the moving die during movement. This reduces potential instability factors such as lateral offset and swaying during vertical movement, significantly improving the stability of the moving die's vertical movement. This, in turn, ensures the relative positional accuracy between the moving die and the fixed die during the punching operation, enhancing the stability and reliability of the punching process.

[0018] 3. This utility model utilizes the combined use of ball bearings and a support platform. During punching operations, the worktable is subjected to downward pressure applied by the hydraulic telescopic rod. To address this, a support platform is installed below the worktable's processing area. The support platform works in conjunction with the worktable's processing area, providing effective support and limiting. During punching operations, this support and limiting mechanism effectively prevents the worktable's processing area from tilting or becoming unstable due to prolonged downward pressure. By preventing abnormal deformation and displacement of the worktable's processing area, the support platform ensures the stability and reliability of the worktable throughout the entire punching process. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the grooved wheel mechanism in this utility model;

[0021] Figure 3 This is a bottom view of the structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the support platform in this utility model.

[0023] In the diagram: 1. Frame; 2. Worktable; 3. Groove; 4. Servo motor; 5. Fixed mold; 6. Moving mold; 7. Hydraulic telescopic rod; 8. Guide rod; 9. Sliding sleeve; 10. Connecting arm; 11. Ball bearing; 12. Support platform; 13. Geneva wheel mechanism; 14. Drive plate; 15. Groove; 16. Rotating arm; 17. Drive pin; 18. Rotating shaft; 19. Geneva wheel; 20. Drive groove; 21. Positioning groove. Detailed Implementation

[0024] Please see Figures 1-4 One embodiment provided by this utility model:

[0025] A multi-station punching die for motor stator laminations includes:

[0026] A frame 1 is provided. A hydraulic telescopic rod 7 is fixedly installed on the top of the frame 1. The drive end of the hydraulic telescopic rod 7 passes through the frame 1 and extends into the interior of the frame 1. A moving mold 6 is fixedly installed on the drive end of the hydraulic telescopic rod 7. A rotating shaft 18 is rotatably installed at the bottom of the interior of the frame 1. A worktable 2 is fixedly installed on the top of the rotating shaft 18. Several fixed molds 5 are fixedly installed on the side of the worktable 2.

[0027] The bottom of the frame 1 is provided with a groove 3 on the rear side of the rotating shaft 18. A servo motor 4 is fixedly installed inside the groove 3. A groove wheel mechanism 13 is provided between the drive end of the servo motor 4 and the rotating shaft 18.

[0028] A guide rod 8 is fixedly installed at the rear inside the frame 1. A sliding sleeve 9 is slidably sleeved on the outer wall of the guide rod 8. A connecting arm 10 is fixedly installed between the sliding sleeve 9 and the moving mold 6. This effectively restricts the degree of freedom of the moving mold 6 during movement, reduces unstable factors such as lateral offset and swaying that may occur when the moving mold 6 moves vertically, and significantly improves the stability of the moving mold 6 during vertical movement.

[0029] In one embodiment, a support platform 12 is fixedly installed on the rear side of the bottom inside the frame 1, and the top of the support platform 12 slides in contact with the bottom of the worktable 2. The support platform 12 and the processing area of ​​the worktable 2 cooperate with each other to provide effective support and limiting function. During the punching operation, this support and limiting mechanism can effectively prevent the processing area of ​​the worktable 2 from tilting or becoming unstable due to long-term downward pressure.

[0030] In one preferred embodiment, a plurality of balls 11 are movably mounted on the top of the support platform 12, and the balls 11 roll in contact with the bottom of the worktable 2, which transforms the original sliding friction between the worktable 2 and the support platform 12 into rolling friction, greatly reducing the friction force, making the worktable 2 rotate more smoothly, reducing wear, and extending the service life of the equipment.

[0031] In one embodiment, the Geneva mechanism 13 includes a drive plate 14 and a Geneva wheel 19, with the Geneva wheel 19 fixedly mounted on the outer wall of the rotating shaft 18. The drive plate 14 is fixedly connected to the drive end of the servo motor 4. The outer surface of the Geneva wheel 19 is provided with drive grooves 20 and positioning grooves 21 corresponding to the position and quantity of the fixed mold 5. The outer surface of the drive plate 14 is provided with slots 15. The bottom of the drive plate 14 is fixedly mounted with a rotating arm 16 corresponding to the position of the slots 15, and the top of the rotating arm 16 is fixedly mounted with a drive pin 17, thereby realizing the intermittent rotation of the worktable 2.

[0032] In one preferred embodiment, the drive plate 14 slides in contact with the positioning groove 21, which can ensure accurate positioning when the grooved wheel 19 stops rotating. The position of the drive pin 17 is matched with the position of the drive groove 20, ensuring that the drive plate 14 can smoothly drive the grooved wheel 19 to rotate. Together, they ensure that the intermittent rotation of the worktable 2 is accurate and reliable, and improve the stability and accuracy of the punching operation.

[0033] The working principle of this utility model is as follows: All electrical components mentioned are electrically connected to the main controller and power supply. The main controller can be a conventional, known device such as a computer for control, and existing publicly available power connection technologies are not elaborated here. Parts not mentioned in this device are the same as or can be implemented using existing technologies. When using this device, first, the workpiece to be processed is placed on each fixed mold 5 at the top of the worktable 2. Then, the hydraulic telescopic rod 7 is activated, and its drive end drives the moving mold 6 to move vertically in a straight line. The moving mold 6 moves downward and cooperates with the fixed mold 5 directly below, performing a punching operation on the workpiece within the fixed mold 5. After the punching process is completed, the drive end of the servo motor 4 drives the drive plate 14 to rotate at a uniform speed. When the drive pin 17 on the drive plate 14 rotates to engage with the drive groove 20 on the grooved wheel 19, the engagement of the drive pin 17 and the drive groove 20 transmits the circumferential motion of the drive plate 14 to the grooved wheel 19, causing the grooved wheel 19 to generate angular displacement and begin to rotate. The rotation of the Geneva wheel 19 is transmitted to the worktable 2 via the rotating shaft 18, which in turn drives the worktable 2 and the fixed mold 5 mounted on it to rotate synchronously until the next fixed mold 5 rotates to directly below the moving mold 6. At this time, the drive pin 17 disengages from the drive groove 20, the drive plate 14 continues to rotate, and the Geneva wheel 19 stops rotating due to the loss of the driving action of the drive pin 17. At the same time, the positioning groove 21 on the Geneva wheel 19 engages with the outer side of the drive plate 14 to ensure that the Geneva wheel 19 remains stationary in this position. By switching between the continuous rotation of the drive plate 14 and the intermittent rotation of the Geneva wheel 19, the intermittent rotation function of the worktable 2 is realized. This intermittent rotation mode allows the fixed molds 5 on the top of the worktable 2 to be sequentially transported to the bottom of the moving mold 6, and during the self-locking time period of the Geneva wheel mechanism 13, the moving mold 6 and the fixed mold 5 complete the punching process of the workpiece. This working mode allows one moving mold 6 to work in conjunction with multiple fixed molds 5, providing workers with ample time for loading and unloading operations, and effectively reducing processing and production costs without compromising equipment processing efficiency.

[0034] During the punching operation, driven by the hydraulic telescopic rod 7, the moving die 6 moves vertically and cooperates with the fixed die 5 to complete the workpiece punching operation. The vertical displacement of the moving die 6 drives the connecting arm 10 to move synchronously. The connecting arm 10 is connected to the sliding sleeve 9, and its movement drives the sliding sleeve 9 to slide relative to the outer wall of the guide rod 8. The sliding pair formed by the guide rod 8 and the sliding sleeve 9 provides precise guidance and limiting for the vertical movement of the moving die 6, effectively constraining the degree of freedom of the moving die 6 during the movement, reducing unstable factors such as lateral offset and swaying that may occur during the vertical movement of the moving die 6, significantly improving the stability of the vertical movement of the moving die 6, and thus ensuring the relative positional accuracy between the moving die 6 and the fixed die 5 during the punching operation, improving the stability and reliability of the punching operation. During the punching operation, the worktable 2 will be subjected to the downward pressure applied by the hydraulic telescopic rod 7. To cope with this situation, a support platform 12 is set below the processing area of ​​the worktable 2. The support platform 12 works in conjunction with the processing area of ​​the worktable 2, providing effective support and limiting. During the punching operation, this support and limiting mechanism effectively prevents the processing area of ​​the worktable 2 from tilting or becoming unstable due to long-term downward pressure. By avoiding abnormal deformation and displacement of the processing area of ​​the worktable 2, the support platform 12 ensures the stability and reliability of the worktable 2 throughout the entire punching operation.

Claims

1. A multi-station blanking die for motor stator laminations, characterized by: The device includes a frame, with a hydraulic telescopic rod fixedly mounted on the top of the frame. The drive end of the hydraulic telescopic rod passes through the frame and extends into the interior of the frame. A moving mold is fixedly mounted on the drive end of the hydraulic telescopic rod. A rotating shaft is rotatably mounted on the bottom of the frame. A worktable is fixedly mounted on the top of the rotating shaft. Several fixed molds are fixedly mounted on the sides of the worktable. A groove is formed at the bottom of the frame, behind the rotating shaft. A servo motor is fixedly mounted inside the groove. A groove wheel mechanism is provided between the drive end of the servo motor and the rotating shaft.

2. A multi-station punching die for motor stator lamination as claimed in claim 1, wherein: A guide rod is fixedly installed at the rear inside the frame, and a sliding sleeve is slidably sleeved on the outer wall of the guide rod. A connecting arm is fixedly installed between the sliding sleeve and the moving mold.

3. A multi-station punching die for motor stator lamination as claimed in claim 1, wherein: A support platform is fixedly installed on the rear side of the bottom inside the frame, and the top of the support platform slides in contact with the bottom of the workbench.

4. A multi-station punching die for motor stator lamination as claimed in claim 3, wherein: Several ball bearings are movably installed on the top of the support platform, and the ball bearings make rolling contact with the bottom of the worktable.

5. A multi-station punching die for motor stator lamination as claimed in claim 1, wherein: The grooved wheel mechanism includes a drive plate and a grooved wheel. The grooved wheel is fixedly installed on the outer wall of the rotating shaft. The drive plate is fixedly connected to the drive end of the servo motor. The outer side of the grooved wheel is respectively provided with drive grooves and positioning grooves corresponding to the fixed mold position and quantity. The outer side of the drive plate is provided with a slot. The bottom of the drive plate is fixedly installed with a rotating arm corresponding to the slot position. The top of the rotating arm is fixedly installed with a drive pin.

6. A multi-station punching die for motor stator lamination as claimed in claim 5 wherein: The drive plate slides in contact with the positioning groove, and the position of the drive pin is adapted to the position of the drive groove.

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