High-precision punching equipment for stator integrated plastic package body

Abstract

The invention discloses high-precision punching equipment for a stator integrated plastic package body, and relates to the field of post-processing of motor components. When the high-precision punching equipment is used, a pull plate is pulled to deflect, a displacement assembly is pressed down when the pull plate deflects, a positioning assembly is matched with a positioning cover through an insertion rod to position a plastic package cover, and a drill bit of a path plate positioning drilling and tapping module is located at a first drilling position; the pressing assembly applies elastic pressure to the clamp and the drill bit until the drill bit penetrates through the plastic package cover under the elastic pressure, the elastic pressure is released instantly, the drill bit axially reciprocates at high frequency after penetrating through the plastic package cover, and when the drill bit is reset, the guide assembly guides the drill bit of the drilling and tapping module to automatically position a second drilling position under the guide of the displacement groove in the path plate; by means of the mode, primary positioning of the plastic package cover and secondary positioning of the drill bit are matched, accurate positioning of the first drilling position is achieved, meanwhile, the drill bit can conduct multiple times of accurate positioning of the second drilling position or the third drilling position, and accurate and deviation-free forming of multiple hole positions during operation is achieved.

Description

Technical Field

[0001] The present invention relates to the field of post-processing of motor components, and in particular to high-precision punching equipment for an integrated plastic-sealed stator. Background Art

[0002] In industrial control, especially in motor drive control applications, speed detection is important feedback data for achieving precise motor drive control. It is often necessary to detect the motor's speed, provide speed feedback, and form a closed-loop speed control. Precision-controlled motors generally have a circuit board installed inside. Conventional circuit board and stator assembly designs have poor waterproofing, leading to the widespread use of related plastic-encapsulated structures in such motors. However, during plastic encapsulation, the Hall element integrated into the circuit board needs to maintain the ability to measure the speed of the stator or rotor. This Hall element needs to pass through the plastic encapsulation for detection. To ensure durability and data accuracy, multiple Hall elements are often deployed at multiple points within the same radius. This also requires precise openings at multiple points in the plastic encapsulation during post-processing.

[0003] Due to the high cost of automated equipment and the actual production quantity limit, the basic mainstream is still to use semi-automatic post-processing operations with manual cooperation, which is low-cost and stable and reliable. For small-sized plastic-sealed bodies, after manual positioning, the detection holes corresponding to multiple Hall elements need to be positioned multiple times. During multiple positioning operations, manual deviations are very likely to cause hole position offsets. In particular, the manual positioning accuracy of smaller plastic-sealed bodies is more difficult to guarantee, resulting in a lower yield rate.

[0004] After the plastic package is positioned, the detection holes corresponding to multiple Hall elements need to be positioned multiple times. When the sensor automatic calibration control is not used, positioning deviations are very likely to occur during multiple manual positioning operations, causing hole position offsets and blocking of the Hall elements. Especially for smaller plastic packages, it is impossible to use multiple drill bits for parallel synchronous drilling operations. In the process of hole position calibration that requires the drill bits to be calibrated in sequence, it is even more difficult to maintain a high pass rate with manual positioning accuracy, which cannot meet the needs of use.

[0005] And under the premise of ensuring the accurate positioning of the drill bit, the accurate positioning and clamping of the plastic package body is crucial. At this time, the individual control of the positioning and clamping of the plastic package body, as well as the continuous replacement of multiple plastic package bodies, will undoubtedly greatly increase the workload. Summary of the Invention

[0006] The purpose of the present invention is to propose a high-precision punching device for stator integrated plastic packaging body in order to solve the problem that non-automatic processing can effectively reduce costs but has low yield and efficiency during the post-processing of plastic packaging body.

[0007] In order to achieve the above-mentioned object, the present invention adopts the following technical solution: a high-precision punching device for a stator integrated plastic package, comprising an external component and a sliding component fixed at the bottom thereof, the sliding component comprising a plastic package cover, the external component comprising a housing and a path plate embedded in the side wall of the housing, a displacement component for axial displacement installed in the housing, the displacement component comprising a top plate and a driver mounted thereon, and a driving gear installed at the output end of the driver, A positioning assembly is installed on the lower surface of the top plate, and the positioning assembly includes an insertion rod fixed to the top plate, a gear cylinder meshing with the driving gear is rotatably provided on the surface of the insertion rod, and a positioning cover is slidably passed through the bottom end of the insertion rod; A drilling and tapping module is provided on one side of the top plate, and the drilling and tapping module includes a guide assembly that is limitedly slidable on one side of the top plate, and a pressure assembly that passes through the surface of the guide assembly, and a clamp for clamping a drill bit is rotatably installed on the surface of the pressure assembly, and a driven gear that meshes with the inner wall of the gear cylinder is provided on the top of the clamp; When the displacement assembly is pressed down, the positioning assembly positions the plastic cover, the path plate positions the drilling module, and the pressure assembly applies elastic pressure to the fixture until the drill bit penetrates the plastic cover. The elastic pressure is released, and the drill bit performs high-frequency axial reciprocating motion after penetrating the plastic cover. When resetting, the guide assembly automatically positions the drilling module to the next drilling position under the guidance of the path plate. After drilling is completed, the drilling module is reset under the action of the inertia force of the meshing of the gear cylinder and the driven gear.

[0008] As a further description of the above technical solution: the external component also includes a side frame fixed on the outside of the shell and used to limit the path plate. The surface of the shell is movably connected with a pull plate, and a through hole is opened through the surface of the pull plate.

[0009] As a further description of the above technical solution: the path plate includes a plurality of guide grooves formed on the plate body and the inner side wall thereof, a displacement groove is connected between two adjacent guide grooves, and a reset groove is connected between the guide groove and the top of the displacement groove that are farthest apart on the plate body; Both sides of the plate body are provided with clamping edges which are engaged and fixed with the shell.

[0010] As a further description of the above technical solution: the displacement assembly also includes a guide rod fixed on the inner wall of the shell, the top plate slides through the surface of the guide rod, the lower surface of the top plate is fixedly connected to the slide rail, the upper surface of the top plate is fixedly connected to the pressure plate, and one end of the pressure plate slides in the through hole.

[0011] As a further description of the above technical solution: the guide assembly includes a connecting plate, the upper surface of the connecting plate is fixedly connected to a sliding part that slides in cooperation with the slide rail, the surface of the connecting plate is provided with a limiting fixture, a pin slides in the limiting fixture, and a top spring is provided on one side of the pin.

[0012] As a further description of the above technical solution: the pressure-applying assembly includes a retaining frame, and two threaded columns are symmetrically fixed on the upper surface of the retaining frame. The threaded columns slide through the surface of the connecting plate, and retaining springs are symmetrically arranged on both sides of the connecting plate on the surface of the threaded columns, and the top threads of the threaded columns are fitted with nuts.

[0013] As a further description of the above technical solution: the positioning assembly also includes a positioning spring fixed on the surface of the insertion rod, the bottom end of the positioning spring is fixedly connected to the top end of the positioning cover, the insertion rod and the gear cylinder are connected through a rotating part, and the inner wall of the gear cylinder is engaged with the driving gear.

[0014] As a further description of the above technical solution: one side of the positioning cover is set in an open shape, and the bottom of the positioning cover is in a flared shape.

[0015] As a further description of the above technical solution: the depth of the displacement groove gradually becomes shallower from bottom to top until the depth is consistent with the guide groove.

[0016] As a further description of the above technical solution: the sliding assembly includes a slide fixed to the shell for sliding the plastic cover, the inner wall of the slide is provided with a drop opening, and a collecting tray is provided below the drop opening.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: When the present invention is used, the pull plate is pulled to deflect, and the displacement component is pressed down when the pull plate is deflected. The positioning component cooperates with the insertion rod and the positioning cover to position the plastic cover. The path plate positions the drill bit of the drilling and tapping module in the first drilling position, and the pressure-applying component applies elastic pressure to the fixture and the drill bit until the drill bit penetrates the plastic cover under the elastic pressure. The elastic pressure is instantly released, and the drill bit performs high-frequency axial reciprocating motion after penetrating the plastic cover. When resetting, the guide component guides the drill bit of the drilling and tapping module down in the displacement groove of the path plate to automatically position the second drilling position. This method realizes one-time positioning of the plastic cover, and the positioning cover presses down the plastic cover to cooperate with the axial positioning of its expansion to realize secondary positioning. The plastic cover performs three-time positioning cooperation after the drill bit passes through, so as to realize precise positioning of the first drilling position, and combines the cooperation of the path plate and the displacement component to realize precise positioning of multiple detection holes, realize precise positioning of the workpiece and precise positioning of the hole position, and realize precise and deviation-free forming of multiple hole positions under simple manual operation. And when penetrating, the plastic cover can, under the maximum pressure holding state of the positioning component, make rapid axial reciprocating motion after the drill bit penetrates, quickly smooth the inner wall of the hole and discharge debris. When the drill bit is moved out and reset, as the pressure of the positioning component on the plastic cover gradually decreases, the inner wall of the drilled inspection hole is relatively smooth and will not be displaced under the action of friction as the drill bit is moved out, thereby adapting to the synchronously reduced pressure of the plastic cover. This method smoothes the inside of the hole through the axial reciprocating motion of the drill bit, making it slide out more smoothly. The plastic cover does not need a large holding force to be positioned, so that when it is switched after drilling is completed, it will not be displaced as the drill bit is moved out. This method abandons the traditional clamp coordination method, can guarantee accuracy to the greatest extent, and improve the efficiency and convenience of personnel operation.

[0018] After drilling and tapping is completed, the driven gear of the drilling and tapping module engages with the gear cylinder. Based on the friction between the gear cylinder and the driven gear, the drilling and tapping module has a reset inertia force. When the punch slides into the reset groove, it can be quickly reset under the action of the inertia force, thereby maintaining the continuity of the processing of multiple plastic covers. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the present invention; Figure 2 A three-dimensional schematic diagram of another viewing angle of the present invention; Figure 3 It is a schematic cross-sectional view of the present invention; Figure 4 is a schematic sectional view of a three-dimensional external component of the present invention; Figure 5 is a schematic sectional view of a three-dimensional external component of the present invention; Figure 6 This is a schematic diagram of the structure of the internal installation of the external shell of the present invention; Figure 7 Schematic diagram of the coordination of the displacement assembly and the positioning assembly of the present invention; Figure 8 This is a schematic diagram of the installation state of the drilling and tapping module of the present invention; Figure 9 A three-dimensional schematic diagram of the drilling and tapping module of the present invention; Figure 10 It is a structural schematic diagram of the guide assembly and the pressure assembly of the present invention; Figure 11 is a three-dimensional schematic diagram of the path plate of the present invention; Figure 12 It is a partial explosion diagram of the present invention; Figure 13 Schematic diagram of an automated implementation method of the present invention.

[0020] Legend: 10. External components; 11. Housing; 12. Path plate; 121. Plate body; 122. Guide groove; 123. Displacement groove; 124. Reset groove; 125. Clamping edge; 13. Side frame; 14. Pull plate; 15. Through hole; 20. Displacement assembly; 21. Top plate; 22. Driver; 23. Driving gear; 24. Guide rod; 25. Press plate; 26. Slide rail; 30. Drilling and tapping module; 31. Guide assembly; 311. Connecting plate; 312. Slide; 313. Limiting fixture; 314. Ejector head; 315. Ejector spring; 32. Pressure assembly; 321. Retainer; 322. Threaded column; 323. Nut; 324. Retaining spring; 33. Clamp; 34. Driven gear; 35. Drill bit; 40. Sliding assembly; 41. Slideway; 42. Dropping port; 43. Collecting tray; 44. Plastic cover; 50. Positioning assembly; 51. Insert rod; 52. Rotating member; 53. Gear cylinder; 54. Positioning spring; 55. Positioning cover. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Most of the current motor application scenarios do not require high driving accuracy. During production, precision-controlled motors and ordinary motor workpieces are all standard parts produced in a unified manner. The difference is that precision-controlled motors are achieved through speed monitoring. Speed ​​detection is the core link of precise motor drive control. Hall elements are used for speed detection and need to pass through the plastic package for data collection. Therefore, for some customer groups with precision control, the speed monitoring function can be added through post-processing of the plastic package and then a controller can be installed. This method can produce motor components of various specifications without changing the production line. However, adding processing procedures to the existing mature production lines is costly and easy to cause problems, which is difficult. Therefore, for limited motor specification requirements, manual local post-processing of components is the most economical option.

[0023] like Figure 1 - Figure 13As shown, the present invention provides: a stator integrated plastic package body high-precision punching device, including an external component 10 and a sliding component 40 fixed at the bottom thereof, the sliding component 40 includes a plastic cover 44, the external component 10 includes a shell 11 and a path plate 12 embedded in the side wall of the shell 11, a displacement component 20 for axial displacement is installed in the shell 11, the displacement component 20 includes a top plate 21 and a driver 22 installed thereon, and a driving gear 23 is installed at the output end of the driver 22. A positioning assembly 50 is mounted on the lower surface of the top plate 21. The positioning assembly 50 includes an insertion rod 51 fixed to the top plate 21. A gear cylinder 53 is rotatably provided on the surface of the insertion rod 51 and meshes with the driving gear 23. A positioning cover 55 is slidably passed through the bottom end of the insertion rod 51. A drilling and tapping module 30 is provided on one side of the top plate 21. The drilling and tapping module 30 includes a guide assembly 31 that is limitedly slidable on one side of the top plate 21, and a pressure assembly 32 that passes through the surface of the guide assembly 31. A fixture 33 for holding a drill bit 35 is rotatably mounted on the surface of the pressure assembly 32. A driven gear 34 is provided on the top of the fixture 33 and meshes with the inner wall of the gear cylinder 53. When the displacement assembly 20 is pressed down, the positioning assembly 50 positions the plastic cover 44, the path plate 12 positions the drilling and tapping module 30, and the pressure assembly 32 applies elastic pressure to the clamp 33 until the drill bit 35 penetrates the plastic cover 44. The elastic pressure is released, and the drill bit 35 penetrates the plastic cover 44 and performs high-frequency axial reciprocating motion. When resetting, the guide assembly 31 automatically positions the drilling and tapping module 30 to the next drilling and tapping position under the guidance of the path plate 12. After drilling and tapping is completed, the drilling and tapping module 30 is reset under the action of the inertia force of the meshing of the gear cylinder 53 and the driven gear 34.

[0024] Specifically, such as Figure 1 As shown: the external component 10 also includes a side frame 13 fixed outside the shell 11 and used to limit the path plate 12. A pull plate 14 is movably connected to the surface of the shell 11, and a through hole 15 is opened on the surface of the pull plate 14.

[0025] By providing the shell 11 , the shell 11 can protect the interior to prevent operators from accidentally touching the interior and causing potential safety hazards. The shell 11 is fixed to the guide rod 24 and can support the top plate 21 to slide through the guide rod 24 .

[0026] The side frame 13 on the surface of the shell 11 can press the path plate 12 on one side of the shell 11, and can perform maintenance operations such as oiling the path plate 12 when necessary, and can replace the path plate 12 with different drilling spacing when necessary.

[0027] The pulling plate 14 can control the displacement of the top plate 21 by pushing and pulling. When the top plate 21 is in the reset state, continuous pushing can release the blocking of the positioning cover 55 on the plastic cover 44, allowing it to slide in the slide 41. After a small pull, the positioning cover 55 blocks the plastic cover 44. Continuous pulling allows the insertion rod 51 to cooperate with the initial positioning of the positioning cover 55 and then penetrate the plastic cover 44 for secondary precise positioning.

[0028] Specifically, such as Figure 11 As shown, the path plate 12 includes a plate body 121 and a plurality of guide grooves 122 formed on its inner side wall. A displacement groove 123 is connected between two adjacent guide grooves 122. A reset groove 124 is connected between the top ends of the guide grooves 122 and the displacement grooves 123 on the plate body 121 that are farthest apart. Both sides of the plate body 121 are provided with a clamping edge 125 that is fixedly engaged with the housing 11 .

[0029] By providing the guide groove 122 , the ejector head 314 can slide in the guide groove 122 under the pressure of the ejector spring 315 . When the ejector head 314 moves to the displacement groove 123 , the ejector head 314 slides out and is partially engaged under the action of the ejector spring 315 , preventing it from moving in the reverse direction.

[0030] The design of the path plate 12 has a lower threshold for use than the method of using a stepper motor combined with a sensor, is more reliable for processing workpieces of fixed models, and has low subsequent maintenance costs.

[0031] Specifically, such as Figure 8 As shown: the displacement assembly 20 also includes a guide rod 24 fixed to the inner wall of the shell 11, the top plate 21 penetrates and slides on the surface of the guide rod 24, the lower surface of the top plate 21 is fixedly connected to the slide rail 26, and the upper surface of the top plate 21 is fixedly connected to the pressure plate 25, and one end of the pressure plate 25 is limited and slides in the through hole 15.

[0032] The guide rod 24 is provided to limit the displacement direction and distance of the top plate 21. In subsequent equipment upgrades, the guide rod 24 may be equipped with an auxiliary spring, which eliminates the need to manually push or pull the pull plate 14. Instead, the pull plate 14 only needs to be pulled. The lower surface of the top plate 21 is provided with an arc-shaped slide rail 26 , which can slide in cooperation with the arc-shaped slide member 312 , and the connecting plate 311 can move under the cooperation of the slide rail 26 and the slide member 312 .

[0033] Specifically, such as Figure 10 As shown: the guide assembly 31 includes a connecting plate 311, the upper surface of the connecting plate 311 is fixedly connected to a slide 312 that slides in cooperation with the slide rail 26, the surface of the connecting plate 311 is provided with a limit clamp 313, a push head 314 slides in the limit clamp 313, and a push spring 315 is provided on one side of the push head 314.

[0034] By providing the limiting fixture 313 , the limiting fixture 313 can limit the small sliding out and contraction of the plug 314 to adapt to the depth change of the displacement groove 123 .

[0035] Specifically, such as Figure 9 and Figure 10 As shown: the pressure assembly 32 includes a retaining frame 321, and two threaded columns 322 are symmetrically fixed on the upper surface of the retaining frame 321. The threaded columns 322 slide through the surface of the connecting plate 311, and retaining springs 324 are symmetrically arranged on both sides of the connecting plate 311 on the surface of the threaded column 322. The top thread of the threaded column 322 is equipped with a nut 323.

[0036] By rotating the nut 323 , the pressure of the two retaining springs 324 on the connecting plate 311 can be controlled so that the elastic force thereof is increased and varied, and the amplitude of the reciprocating vibration of the drill bit 35 is reduced and the frequency is increased.

[0037] The surface of the threaded column 322 on the retaining frame 321 clamps the connecting plate 311 through two symmetrical retaining springs 324. When the retaining frame 321 moves, the threaded column 322 slides on the connecting plate 311. The two retaining springs 324 provide an elastic force, one stretched and the other compressed, and apply an elastic pressure to the drill bit 35 through the elastic force to maintain the drilling operation on the plastic package body. After penetration, the elastic force is released. Based on the lack of damping, the retaining springs 324 can carry the retaining frame 321 for reciprocating axial movement and stop quickly, so that the drill bit 35 can clear the hole multiple times after drilling through.

[0038] Specifically, such as Figure 7 As shown: the positioning assembly 50 also includes a positioning spring 54 fixed on the surface of the insertion rod 51, the bottom end of the positioning spring 54 is fixedly connected to the top end of the positioning cover 55, the insertion rod 51 is connected to the gear cylinder 53 through a rotating member 52, and the inner wall of the gear cylinder 53 is engaged with the driving gear 23.

[0039] The positioning spring 54 is located on the surface of the insertion rod 51 and is fixed at one end, and the other end is fixed on the positioning cover 55. When the insertion rod 51 passes through the plastic cover 44, the positioning spring 54 can apply pressure to the positioning cover 55. This fixing method can accurately position the axial position of the plastic cover 44 through the insertion rod 51. At the same time, the positioning cover 55 can apply pressure after the initial blocking positioning to avoid small axial movement of the plastic cover 44, thereby ensuring the stability of the drilling process. This fixing method is stable and reliable, easy to operate, and does not require a separate clamp 33 to cooperate.

[0040] Specifically, such as Figure 6 As shown, one side of the positioning cover 55 is open, and the bottom of the positioning cover 55 is flared.

[0041] The opening on one side of the positioning cover 55 can block the plastic cover 44 sliding in the slide 41, and the flared shape at the bottom can gather the plastic cover 44 and align it axially with the insertion rod 51 when pressed down.

[0042] Specifically, such as Figure 11 As shown, the depth of the displacement groove 123 gradually becomes shallower from bottom to top until the depth is consistent with the guide groove 122.

[0043] Through the transition change in depth from deep to shallow, the displacement groove 123 can be separated from the previous guide groove 122 and transition to the next guide groove 122 .

[0044] Specifically, such as Figure 3 As shown, the sliding assembly 40 includes a slideway 41 fixed to the housing 11 for sliding the plastic cover 44 , the inner wall of the slideway 41 is provided with a drop opening 42 , and a collecting tray 43 is provided below the drop opening 42 .

[0045] By setting up the slide 41, the inclined slide 41 can maintain the sliding guide of the plastic cover 44. When drilling, the drop-out port 42 on the slide 41 can prevent the drill bit 35 from touching after passing through, and can drop the drilling waste and collect it in the collecting tray 43. When the drilling is in reciprocating axial rapid motion, the waste can be discharged to keep the hole smoother.

[0046] Due to the small size of the plastic package, simultaneous drilling with multiple drill bits 35 is difficult. Therefore, each hole must be calibrated and drilled sequentially, further reducing processing efficiency and increasing the risk of error. However, this solution deflects the pull plate 14 to drive the displacement assembly 20 downward, allowing the positioning assembly 50 to secure and precisely position the plastic package 44 via the insertion rod 51 and the positioning cover 55. Guided by the path plate 12, the drill bit 35 accurately completes the first drilling position and automatically adjusts to the second and third drilling positions, achieving high-precision positioning for multiple hole positions and avoiding deviations caused by multiple manual positioning.

[0047] The electric clamp 33 and the automatic drilling machine of the automated equipment can coordinate with each other to ensure processing accuracy and efficiency; however, in manual operation, if clamping and drilling are to be controlled simultaneously, coordination is difficult, and the workload of the workers is significantly increased, which reduces the efficiency and stability of the operation. This solution performs a positioning operation after the plastic cover 44 sliding down the slide 41 is blocked by the positioning cover 55. Then, when the positioning cover 55 is pressed down, it is positioned twice under the action of the flaring below, so that it is aligned with the insertion rod 51. Then, after the insertion rod 51 passes through, it is positioned three times to ensure the positioning accuracy. After the three positioning operations, the positioning cover 55 presses the plastic cover 44 under the pressure of the positioning spring 54 to maintain the final pressure after the three positioning operations.

[0048] When using this solution, first place the plastic cover 44 on the slide 41 in the specified direction, so that it slides down and is blocked by the insertion rod 51. After the plastic cover 44 is placed in order, lift the pull plate 14 and keep the pull plate 14 moving up with the top plate 21. The top plate 21 slides to the level of the reset groove 124 through the slide rail 26 and the slide 312 with the top head 314 of the displacement assembly 20. The insertion rod 51 moves up at this time, and the plastic cover 44 is blocked by the positioning cover 55. The driver 22 is started, and the driver 22 drives the driving gear 23 and the gear The wheel drum 53 rotates with the driven gear 34, and the driven gear 34 rotates with the drill bit 35 through the clamp 33. By pulling the pull plate 14, when the pull plate 14 deflects, the end of the pressure plate 25 slides in the through hole 15 to eliminate lateral displacement, keeping the pressure plate 25 only able to move axially. When the pressure plate 25 moves, it also moves with the top plate 21. The top plate 21 directly passes the insertion rod 51 through the plastic cover 44, so that the plastic cover 44 is positioned. At the same time, the positioning spring 54 is continuously compressed to keep the positioning cover 55 pressing the plastic cover 44. During the downward pressing process, the top plate 21 slides with the ejector head 314 in the rightmost guide groove 122. After moving to a certain distance, the ejector head 314 slides into the bottom of the displacement groove 123 under the elastic force of the ejector spring 315. The bottom of the displacement groove 123 is deeper than the guide groove 122, and its top is consistent with the depth of the guide groove 122 and presents an inclined surface. During the continuous downward pressing process, the ejector head 314 is stuck in the displacement groove 123 and continues to move axially. Then, when the pressure is continuously pressed down, the drill bit 35 contacts the plastic cover 44 and drills a hole while rotating at high speed. The drilling speed is different based on the material thickness or material difference of different plastic covers 44. If the material is more difficult to penetrate, the drill bit 35 will encounter greater resistance, so the greater the resistance, the greater the obstruction to the drill bit 35, the greater the deformation of its two retaining springs 324, and the pressure on the drill bit 35 increases. When the drill bit 35 penetrates, the instantaneous loss of pressure causes the retaining springs 324 to rebound back and forth. The drill bit 35 reciprocates in the detection hole and maintains the adaptation of its inner wall. When the detection hole is separated from the drill bit 35, the pressure of the positioning spring 54 on the positioning cover 55 also decreases.

[0049] When the top plate 21 is reset, its head 314 slides in the displacement groove 123, first sliding axially for a certain distance and then sliding diagonally. The head 314 slides and simultaneously brings the slide 312 on the connecting plate 311 to slide horizontally on the slide rail 26, so that the drill bit 35 slides out of the detection hole and then moves horizontally until it is positioned in the other guide groove 122. After drilling is completed, the plug 314 slides into the reset groove 124. At this time, due to the high-speed engagement of the gear cylinder 53 with the driven gear 34, a clockwise inertia force is generated, causing the plug 314 to slide horizontally in the reset groove 124 to achieve reset. Because multiple Hall elements are placed within the plastic package, precise holes must be drilled at multiple points along the same radius. However, existing methods rely primarily on manual processing coupled with semi-automatic equipment. While this method is cost-effective, maintaining precise positioning poses challenges when machining small plastic packages. Repeated manual positioning can easily lead to deviations, resulting in offset or inaccurate hole positions.

[0050] This solution uses the fixed motion trajectory of the path plate 12 to accurately locate the drill bit at more than 35 positions and perform drilling operations, solving the problem of positioning deviation in the post-processing process, which leads to offset or inaccurate hole positions. There is no overall intelligent control, low requirements for operators, and the operating steps are simple, so employees can get started quickly.

[0051] Especially when drilling holes in smaller plastic-encapsulated bodies, manual positioning accuracy is difficult to guarantee, and offset hole positions can easily obstruct Hall effect elements, affecting detection accuracy and product yield. Furthermore, traditional methods increase processing complexity and uncertainty through multiple manual positioning operations. This solution, however, involves the operator repeatedly pulling and pushing the pull plate 14 to precisely position and form multiple detection holes. This approach offers ease of operation, high processing accuracy, and guaranteed efficiency.

[0052] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A high-precision punching device for a stator integrated plastic package, comprising an external component (10) and a sliding component (40) fixed at the bottom thereof, wherein the sliding component (40) comprises a plastic package cover (44), characterized in that: The external component (10) comprises a housing (11) and a path plate (12) embedded in a side wall of the housing (11); a displacement component (20) for axial displacement is installed in the housing (11); the displacement component (20) comprises a top plate (21) and a driver (22) installed thereon, and a driving gear (23) is installed at the output end of the driver (22); A positioning assembly (50) is installed on the lower surface of the top plate (21), and the positioning assembly (50) comprises an insertion rod (51) fixed to the top plate (21), a gear cylinder (53) meshing with the driving gear (23) being rotatably provided on the surface of the insertion rod (51), and a positioning cover (55) slidingly penetrates the bottom end of the insertion rod (51); A drilling module (30) is provided on one side of the top plate (21), and the drilling module (30) comprises a guide component (31) which is limitedly slidable on one side of the top plate (21), and a pressure component (32) which is located on the surface of the guide component (31) and penetrates through the surface of the guide component (31), and a clamp (33) for clamping a drill bit (35) is rotatably mounted on the surface of the pressure component (32), and a driven gear (34) which meshes with the inner wall of the gear cylinder (53) is provided at the top end of the clamp (33); When the displacement assembly (20) is pressed down at the initial position, the positioning assembly (50) positions the plastic cover (44), the path plate (12) positions the drilling module (30), and the pressure-applying assembly (32) applies elastic pressure to the clamp (33) until the drill bit (35) penetrates the plastic cover (44). The elastic pressure is then released, and the drill bit (35) performs high-frequency axial reciprocating motion after penetrating the plastic cover (44). When resetting, the guide assembly (31) automatically positions the drilling module (30) at the next drilling position under the guidance of the path plate (12). After drilling is completed, the drilling module (30) is reset to the initial position under the action of the inertial force of the meshing of the gear cylinder (53) and the driven gear (34).

2. The high-precision punching device for stator integrated plastic package according to claim 1, characterized in that: The external component (10) further comprises a side frame (13) which is fixed outside the shell (11) and is used to limit the path plate (12). A pull plate (14) is movably connected to the surface of the shell (11), and a through hole (15) is formed through the surface of the pull plate (14).

3. The high-precision punching device for stator integrated plastic package according to claim 2, characterized in that: The path plate (12) comprises a plate body (121) and a plurality of guide grooves (122) formed on its inner side wall, a displacement groove (123) is connected between two adjacent guide grooves (122), a reset groove (124) is connected at the top of the guide groove (122) and the displacement groove (123) that are farthest apart on the plate body (121), and clamping edges (125) that engage with the housing (11) are provided on both sides of the plate body (121).

4. The high-precision punching device for stator integrated plastic package according to claim 2, characterized in that: The displacement assembly (20) further comprises a guide rod (24) fixed to the inner wall of the housing (11); the top plate (21) penetrates and slides on the surface of the guide rod (24); a slide rail (26) is fixedly connected to the lower surface of the top plate (21); a pressure plate (25) is fixedly connected to the upper surface of the top plate (21); one end of the pressure plate (25) slides in a limited position in the through hole (15).

5. The high-precision punching device for stator integrated plastic package according to claim 4, characterized in that: The guide assembly (31) comprises a connecting plate (311), the upper surface of which is fixedly connected to a slide member (312) that slides in cooperation with the slide rail (26), a limit clamp (313) being provided on the surface of the connecting plate (311), a top head (314) slidingly disposed in the limit clamp (313), and a top spring (315) being provided on one side of the top head (314).

6. The high-precision punching device for stator integrated plastic package according to claim 5, characterized in that: The pressure-applying assembly (32) comprises a retaining frame (321), two threaded columns (322) being symmetrically fixed on the upper surface of the retaining frame (321), the threaded columns (322) penetrating and sliding on the surface of the connecting plate (311), and retaining springs (324) fixed on the surfaces of the threaded columns (322) being symmetrically arranged on both sides of the connecting plate (311), and the top threads of the threaded columns (322) being fitted with nuts (323).

7. The high-precision punching device for stator integrated plastic package according to claim 1, characterized in that: The positioning assembly (50) further comprises a positioning spring (54) fixed on the surface of the insertion rod (51), the bottom end of the positioning spring (54) being fixedly connected to the top end of the positioning cover (55), the insertion rod (51) being connected to the gear cylinder (53) via a rotating member (52), and the inner wall of the gear cylinder (53) being meshed with the driving gear (23).

8. The high-precision punching device for stator integrated plastic package according to claim 7, characterized in that: One side of the positioning cover (55) is arranged in an open shape, and the bottom of the positioning cover (55) is in a flared shape.

9. The high-precision punching device for stator integrated plastic package according to claim 3, characterized in that: The depth of the displacement groove (123) gradually decreases from bottom to top until the depth is consistent with that of the guide groove (122).

10. The high-precision punching equipment for stator integrated plastic package according to claim 1, characterized in that: The sliding material assembly (40) comprises an inclined slideway (41) for supporting the sliding of the plastic sealing cover (44); a material drop opening (42) is provided on the inner wall of the slideway (41); and a material collecting tray (43) is provided below the material drop opening (42).

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