An automatic punching system and method for a water pump motor stator core

Abstract

The application belongs to the technical field of motor production, and particularly relates to an automatic punching system and method for a water pump motor stator core, which comprises a punching assembly and a pressure bearing assembly; the punching assembly comprises an upper hydraulic push rod, a mounting plate, a secondary punching block and a primary punching rod; and the pressure bearing assembly comprises a secondary pressure bearing block, a bottom plate, a guide rod, a movable plate, a primary pressure bearing pipe, a sliding material plate, an inclination adjusting push rod, a hinged lug plate and a lower hydraulic push rod. The automatic punching system for the water pump motor stator core is reasonable in design, mainly comprises the punching assembly and the pressure bearing assembly, adopts a secondary punching mode, first punches a round punching hole, and then punches a stator punching sheet, so that batch automatic punching processing of the stator punching sheet can be realized, the demand of a straight bar punching method process is met, and the utilization rate of materials can be greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of motor manufacturing technology, specifically relating to an automated stamping system and method for the stator core of a water pump motor. Background Technology

[0002] Electric motors are widely used in various electrical devices in industrial production and daily life. Existing water pump motors include a stator and a rotor. In traditional manufacturing methods, the stator core of a water pump motor is formed by stacking stator laminations, which are directly stamped into rings from steel plates. That is, the stator laminations are made by stamping a single ring. The center of the stator lamination has a central hole through which the motor rotor passes. Thus, for each ring-shaped stator lamination stamped, a circular plate with an outer diameter equal to the inner diameter of the central hole must be punched out from the raw material plate, thereby reducing material utilization and increasing the cost of motor manufacturing.

[0003] To address the aforementioned problems, existing technologies have proposed a method for straight-strip stamping of stator laminations. This involves stamping straight stator laminations onto a raw material plate and then connecting multiple stator laminations in a circular fashion to form polygonal stator laminations. For example, Chinese patent application CN104993622B discloses a stator core and a strip-shaped laminated body that can be bent to form the stator core. This stator core includes multiple lamination layers, which are stacked sequentially. Each lamination layer includes multiple laminations arranged around a circumference. Each lamination extends a connecting portion to one side, wherein the connecting portions of adjacent lamination layers extend in opposite directions. The connecting portions of two adjacent lamination layers that are staggered in position are opposite to each other and hinged. Two adjacent lamination layers that are opposite in position are laminated together as a single unit.

[0004] Existing technologies lack automated stamping systems for stator cores suitable for straight bar stamping methods, resulting in low levels of automation that cannot meet the batch stamping requirements of water pump motor stator cores. Therefore, structural optimization and improvement are necessary. Summary of the Invention

[0005] The purpose of this invention is to overcome at least one of the above-mentioned problems in the prior art and to provide an automated stamping system and method for the stator core of a water pump motor.

[0006] To achieve the above-mentioned technical objectives and effects, the present invention is implemented through the following technical solution:

[0007] This invention provides an automated stamping system for the stator core of a water pump motor, comprising:

[0008] A stamping assembly, comprising an upper hydraulic push rod, a mounting plate, secondary stamping blocks, and a primary stamping rod, wherein the lower end of the upper hydraulic push rod is fixed with a mounting plate, and a row of staggered and closely arranged secondary stamping blocks are fixed on the lower side of the mounting plate, and a primary stamping rod protruding outward is mounted on the secondary stamping blocks;

[0009] A pressure-bearing assembly includes a secondary pressure-bearing block, a base plate, a guide rod, a movable plate, a primary pressure-bearing pipe, a sliding plate, an adjusting push rod, a hinged lug plate, and a lower hydraulic push rod. A guide rod is installed between the base plate and the secondary pressure-bearing block. A movable plate is slidably installed on the outer side of the guide rod. A primary pressure-bearing pipe is installed on the upper side of the movable plate. A sliding plate is rotatably connected to the side end of the movable plate. An adjusting push rod is installed on the lower side of the movable plate. The movable end of the adjusting push rod is connected to the movable plate via a hinged lug plate. A lower hydraulic push rod is fixed on the base plate, and the movable end of the lower hydraulic push rod is fixedly connected to the movable plate.

[0010] Furthermore, in the above-mentioned automated stamping system for the stator core of the water pump motor, the shape of the secondary stamping block matches the shape of the stator lamination prepared by the straight bar stamping method, and the outer diameter of the primary stamping rod matches the diameter of the punched hole in the stator lamination.

[0011] Furthermore, in the aforementioned automated stamping system for the stator core of the water pump motor, the secondary pressure-bearing block is provided with grooves that correspond to the shape of each secondary stamping block.

[0012] Furthermore, in the above-mentioned automated stamping system for the stator core of the water pump motor, the position of the primary pressure-bearing pipe corresponds one-to-one with the position of the primary stamping rod, and the primary pressure-bearing pipe has a through hole that cooperates with the primary stamping rod.

[0013] Furthermore, in the aforementioned automated stamping system for the stator core of the water pump motor, the movable plate is provided with a material discharge hole that mates with the inner cavity of the primary pressure-bearing pipe.

[0014] Furthermore, in the aforementioned automated stamping system for the stator core of the water pump motor, guide rods are installed between the four corners of the base plate and the secondary pressure block, and sliding holes that cooperate with the guide rods are opened at the four corners of the movable plate.

[0015] Furthermore, in the above-mentioned automated stamping system for the stator core of the water pump motor, the sliding plate is provided with a push plate on the outside of the rotating part near the movable plate, the included angle between the push plate and the sliding plate is 90 to 150 degrees, and the hinged ear plate is installed on the push plate.

[0016] This invention also provides an automated stamping method for the stator core of a water pump motor. This method is based on the automated stamping system for the stator core of a water pump motor described above, and includes the following steps:

[0017] 1) The strip pulled out by the unwinding mechanism enters the stamping zone between the stamping assembly and the pressure-bearing assembly through the leveling mechanism, and the position of the strip remains fixed;

[0018] 2) In the pressure-bearing assembly, the lower hydraulic push rod drives the movable plate and the first-level pressure-bearing pipe on it to move upward, so that the first-level pressure-bearing pipe enters the second-level pressure-bearing block; in the stamping assembly, the upper hydraulic push rod moves downward for the first stamping, so that the first-level stamping rod passes through the material strip and pushes the round punch into the first-level pressure-bearing pipe, forming a round punch hole on the material strip, and the upper hydraulic push rod resets.

[0019] 3) In the pressure-bearing assembly, the lower hydraulic push rod drives the movable plate and the first-level pressure-bearing pipe on it to move down. The tilting push rod moves to make the sliding plate rotate to the area between the second-level pressure block and the movable plate. In the stamping assembly, the upper hydraulic push rod moves down for the second stamping, so that the second-level stamping block passes through the material strip. The stator lamination falls on the sliding plate through the second-level pressure block. The sliding plate and the upper hydraulic push rod are reset in sequence.

[0020] 4) After the material strip has shifted a certain distance, it remains fixed. Repeat steps 2) and 3) to achieve continuous automated stamping.

[0021] The beneficial effects of this invention are:

[0022] The automated stamping system for the stator core of the water pump motor provided by this invention is reasonably designed. It mainly consists of a stamping component and a pressure-bearing component. It adopts a two-stage stamping method, first stamping to form a circular punch, and then stamping to obtain stator laminations. It can realize the batch automated stamping processing of stator laminations, meet the process requirements of straight strip stamping method, and can greatly improve the utilization rate of materials.

[0023] Of course, any product implementing this invention does not necessarily need to achieve all of the above advantages at the same time. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram illustrating the usage state of the present invention;

[0026] Figure 2 This is a flowchart illustrating the stamping process of the strip material using a straight strip stamping method in this invention.

[0027] Figure 3 This is a schematic diagram of the stator lamination prepared by the straight bar stamping method of the present invention;

[0028] Figure 4This is a schematic diagram of the stamping system of the present invention during a single stamping operation;

[0029] Figure 5 This is a schematic diagram of the stamping system of the present invention during secondary stamping;

[0030] Figure 6 This is a schematic diagram of the structure of the secondary pressure-bearing block in this invention;

[0031] Figure 7 This is a schematic diagram of the structure of the movable plate and its components in this invention;

[0032] Figure 8 This is a top view of the pressure-bearing component in this invention.

[0033] The attached diagram lists the components represented by each number as follows:

[0034] 1-Upper hydraulic push rod, 2-Mounting plate, 3-Secondary stamping block, 4-Primary stamping rod, 5-Secondary pressure block, 6-Base plate, 7-Guide rod, 8-Movable plate, 9-Primary pressure pipe, 10-Sliding plate, 11-Tilt adjustment push rod, 12-Hinged ear plate, 13-Lower hydraulic push rod, 14-Unwinding mechanism, 15-Rewinding mechanism, 16-Leveling mechanism, 17-Strip material, 171-Round punch, 172-Stator punch, 18-Stator lamination. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] like Figures 1-8 As shown in the figure, this embodiment provides an automated stamping system for the stator core of a water pump motor, including a stamping assembly and a pressure-bearing assembly.

[0037] In this embodiment, the stamping assembly includes an upper hydraulic push rod 1, a mounting plate 2, a secondary stamping block 3, and a primary stamping rod 4. The bottom end of the upper hydraulic push rod 1 is fixed with the mounting plate 2, and a row of staggered and closely arranged secondary stamping blocks 3 are fixed on the lower side of the mounting plate 2. The primary stamping rod 4 protruding outward is installed on the secondary stamping block 3.

[0038] In this embodiment, the pressure-bearing assembly includes a secondary pressure-bearing block 5, a base plate 6, a guide rod 7, a movable plate 8, a primary pressure-bearing pipe 9, a sliding plate 10, an adjusting push rod 11, a hinged ear plate 12, and a lower hydraulic push rod 13. A guide rod 7 is installed between the base plate 6 and the secondary pressure-bearing block 5, and a movable plate 8 is slidably installed on the outer side of the guide rod 7. A primary pressure-bearing pipe 9 is installed on the upper side of the movable plate 8, and a sliding plate 10 is rotatably connected to the side end of the movable plate 8. An adjusting push rod 11 is installed on the lower side of the movable plate 8, and the movable end of the adjusting push rod 11 is connected to the movable plate via the hinged ear plate 12. A lower hydraulic push rod 13 is fixed on the base plate 6, and the movable end of the lower hydraulic push rod 13 is fixedly connected to the movable plate 8.

[0039] In this embodiment, the shape of the secondary stamping block 3 matches the shape of the stator lamination 18 prepared by the straight bar stamping method, and the outer diameter of the primary stamping rod 4 matches the diameter of the punched hole in the stator lamination 18. The secondary pressure-bearing block 5 has grooves that correspond to the shapes of each secondary stamping block 3. The position of the primary pressure-bearing tube 9 corresponds one-to-one with the position of the primary stamping rod 4, and the primary pressure-bearing tube 9 has through holes that mate with the primary stamping rod 4.

[0040] In this embodiment, the movable plate 8 has a discharge hole that mates with the inner cavity of the primary pressure-bearing pipe 9. Guide rods 7 are installed between the four corners of the base plate 6 and the secondary pressure-bearing block 5, and sliding holes that mate with the guide rods 7 are provided at the four corners of the movable plate 8.

[0041] In this embodiment, the sliding plate 10 is provided with a push plate on the outer side of the rotating part near the movable plate 8. The included angle between the push plate and the sliding plate is 90 to 150 degrees, and the hinge ear plate 12 is installed on the push plate.

[0042] This embodiment also provides an automated stamping method for the stator core of a water pump motor, including the following steps:

[0043] 1) The strip 17 pulled out by the unwinding mechanism 14 enters the stamping area between the stamping assembly and the pressure bearing assembly through the leveling mechanism 16, and the position of the strip 17 remains fixed; the other end of the strip 17 is wound up by the winding mechanism 15, which facilitates the recycling of waste materials and also helps to control the position of the strip 17.

[0044] 2) In the pressure-bearing assembly, the lower hydraulic push rod 13 drives the movable plate 8 and the first-level pressure-bearing pipe 9 on it to move upward, so that the first-level pressure-bearing pipe 9 enters the second-level pressure-bearing block 5; in the stamping assembly, the upper hydraulic push rod 1 moves downward for the first stamping, so that the first-level stamping rod 4 passes through the material strip 17 and pushes the round punch into the first-level pressure-bearing pipe 9, and a round punch hole 171 is formed on the material strip 17, and the upper hydraulic push rod 1 is reset.

[0045] 3) In the pressure-bearing assembly, the lower hydraulic push rod 13 drives the movable plate 8 and the first-level pressure-bearing pipe 9 on it to move downward. The tilting push rod 11 moves to make the sliding plate 10 rotate to the area between the second-level pressure block 5 and the movable plate 8. In the stamping assembly, the upper hydraulic push rod 1 moves downward for the second stamping, so that the second-level stamping block 3 passes through the material strip 17. The material strip 17 forms a stator punch 172. The stator lamination 18 falls on the sliding plate 10 through the second-level pressure block 5. The sliding plate 10 and the upper hydraulic push rod 1 reset in sequence. The stator lamination 18 enters the product collection area under the outward flipping action of the sliding plate 10.

[0046] 4) The strip 17 is displaced under the action of the unwinding mechanism 14 and the winding mechanism 15, and remains fixed after a certain displacement. Steps 2) and 3) are repeated to achieve continuous automated stamping.

[0047] The automated stamping system for the stator core of the water pump motor provided by this invention is reasonably designed. It mainly consists of a stamping component and a pressure-bearing component. It adopts a two-stage stamping method, first stamping to form a circular punch, and then stamping to obtain stator laminations. It can realize the batch automated stamping processing of stator laminations, meet the process requirements of straight strip stamping method, and can greatly improve the utilization rate of materials.

[0048] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An automated stamping method for the stator core of a water pump motor, characterized in that, This method is based on an automated stamping system for the stator core of a water pump motor. The automated stamping system includes a stamping assembly and a pressure-bearing assembly. The stamping assembly includes an upper hydraulic push rod, a mounting plate, secondary stamping blocks, and a primary stamping rod. The bottom end of the upper hydraulic push rod is fixed to the mounting plate, and a row of closely arranged, staggered secondary stamping blocks are fixed to the lower side of the mounting plate. The secondary stamping blocks are equipped with outwardly protruding primary stamping rods. The pressure-bearing assembly includes secondary pressure-bearing blocks, a base plate, guide rods, and a movable... The system comprises a movable plate, a primary pressure-bearing pipe, a sliding plate, an adjusting push rod, a hinged lug plate, and a lower hydraulic push rod. A guide rod is installed between the base plate and the secondary pressure-bearing block. A movable plate is slidably installed on the outer side of the guide rod. A primary pressure-bearing pipe is installed on the upper side of the movable plate. A sliding plate is rotatably connected to the side end of the movable plate. An adjusting push rod is installed on the lower side of the movable plate. The movable end of the adjusting push rod is connected to the movable plate via a hinged lug plate. A lower hydraulic push rod is fixed on the base plate, and the movable end of the lower hydraulic push rod is fixedly connected to the movable plate. The method includes the following steps: 1) The strip pulled out by the unwinding mechanism enters the stamping zone between the stamping assembly and the pressure-bearing assembly through the leveling mechanism, and the position of the strip remains fixed; 2) In the pressure-bearing assembly, the lower hydraulic push rod drives the movable plate and the first-level pressure-bearing pipe on it to move upward, so that the first-level pressure-bearing pipe enters the second-level pressure-bearing block; in the stamping assembly, the upper hydraulic push rod moves downward for the first stamping, so that the first-level stamping rod passes through the material strip and pushes the round punch into the first-level pressure-bearing pipe, forming a round punch hole on the material strip, and the upper hydraulic push rod resets. 3) In the pressure-bearing assembly, the lower hydraulic push rod drives the movable plate and the first-level pressure-bearing pipe on it to move down. The tilting push rod moves to make the sliding plate rotate to the area between the second-level pressure block and the movable plate. In the stamping assembly, the upper hydraulic push rod moves down for the second stamping, so that the second-level stamping block passes through the material strip. The stator lamination falls on the sliding plate through the second-level pressure block. The sliding plate and the upper hydraulic push rod are reset in sequence. 4) After the material strip has shifted a certain distance, keep it fixed and repeat steps 2) and 3) to achieve continuous automated stamping.

2. The automated stamping method for the stator core of a water pump motor according to claim 1, characterized in that: The shape of the secondary stamping block is compatible with the shape of the stator lamination prepared by the straight bar stamping method, and the outer diameter of the primary stamping rod is compatible with the diameter of the punched hole in the stator lamination.

3. The automated stamping method for the stator core of a water pump motor according to claim 2, characterized in that: The secondary pressure-bearing block has grooves that correspond to the shape of each secondary stamping block.

4. The automated stamping method for the stator core of a water pump motor according to claim 3, characterized in that: The position of the first-stage pressure-bearing pipe corresponds one-to-one with the position of the first-stage stamping rod, and the first-stage pressure-bearing pipe has a through hole that cooperates with the first-stage stamping rod.

5. The automated stamping method for the stator core of a water pump motor according to claim 4, characterized in that: The movable plate has a discharge hole that matches the inner cavity of the primary pressure pipe.

6. The automated stamping method for the stator core of a water pump motor according to claim 5, characterized in that: Guide rods are installed between the four corners of the base plate and the secondary bearing block, and sliding holes that cooperate with the guide rods are opened at the four corners of the movable plate.

7. The automated stamping method for the stator core of a water pump motor according to claim 6, characterized in that: The sliding plate is provided with a push plate on the outside of the rotating part near the movable plate. The included angle between the push plate and the sliding plate is 90 to 150 degrees. The hinge ear plate is installed on the push plate.

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