Motor iron core sheet recoil device
By designing a floating die table and a bolt in the stamping equipment and setting avoidance holes on the stamping head, the problem of opposite directions of the outer edge and shaft hole burrs of the iron chip are solved, and the quality improvement of subsequent stacking processing and the smooth removal of the iron chip are achieved.
Patent Information
- Application Number
- CN202422212936.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-09-10
AI Technical Summary
The burr directions of the outer edge of the motor iron chip processed by existing stamping equipment are opposite to the shaft hole, which affects subsequent stacking processing.
A motor iron chip recoil device is designed. By setting a floating die table and a bolt in the stamping die groove and setting a avoiding hole on the stamping head, the burr directions of the outer edge of the iron chip and the shaft hole are consistent.
The consistency between the outer edge of the iron chip and the burr direction of the shaft hole is achieved, ensuring the quality of subsequent stacking processing, and the smooth removal of the iron chip is achieved through spring thrust.
Smart Images
Figure CN222999485U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of stamping equipment, and particularly relates to a reverse punching device for motor iron cores. Background Art
[0002] The iron core is one of the most important components of a motor. Structurally, it includes a shaft hole at the center and a plurality of wire grooves distributed circumferentially on the outer edge. The wire grooves are used for winding the windings. There are mainly two production methods for motor iron cores. The first is to perform cutting on a whole blank. The iron core obtained by this method has good structural stability, but the processing difficulty is relatively large. The second is to perform stamping on iron core sheets and then stack them. This method can effectively reduce the processing difficulty, especially suitable for complex special-shaped iron core structures.
[0003] When using the second production method to process the motor iron core, stamping equipment and stacking equipment are required. The main structure of the stamping equipment includes a stamping base and a stamping head located above the stamping base. A stamping die groove is provided on the upper side of the stamping base, and a punch for punching the shaft hole and an outer die for punching the outer edge of the iron core sheet are integrated on the lower side of the stamping head. When the strip is fed between the stamping head and the stamping die groove, the stamping head descends for stamping. At this time, the outer die presses the strip downward so that the outer edge of the iron core sheet contacts the outer edge of the stamping die groove to achieve punching, and the punch punches downward at the center of the iron core sheet to form the shaft hole of the iron core sheet.
[0004] However, it is found in the actual production process that, on the one hand, the iron core sheet moves downward relative to the stamping die groove, so burrs will be generated upward on the outer edge of the iron core sheet due to the action of the outer edge of the stamping die groove. On the other hand, the punch moves downward relative to the iron core sheet, so burrs will be generated downward on the shaft hole of the iron core sheet due to the action of the punch, that is, the burr directions of the outer edge and the shaft hole of the iron core sheet are opposite, affecting the subsequent stacking processing. Content of the Utility Model
[0005] The purpose of the utility model is to solve the problem that the burr directions of the outer edge and the shaft hole of the iron core sheet processed by the existing stamping equipment are opposite, affecting the subsequent stacking processing.
[0006] To solve the above problems, the utility model provides a reverse punching device for motor iron core sheets, including:
[0007] A lower punching assembly, including a stamping base, a punch and a floating die table. The stamping base is fixedly arranged, and a stamping die groove is opened on the upper end surface of the stamping base. The punch is fixed in the middle of the stamping die groove. The floating die table is located in the stamping die groove and can move vertically. The stamping base is provided with a spring acting on the floating die table and applying an upward thrust so that a gap is formed between the lower side surface of the floating die table and the bottom of the stamping die groove. The floating die table is vertically provided with a through hole for the punch to pass through;
[0008] The upper punching component includes a punching head and a lifting driving member. The punching head is located above the punching die groove. The punching head is provided with an outer die corresponding to the punching die groove. A relief hole for the punch to pass through is vertically opened in the middle of the outer die. The punching head is driven by the lifting driving member to realize lifting and lowering.
[0009] Compared with the prior art, in the above solution, the punch is arranged in the punching die groove of the punching seat, and at the same time, a floating die table that can move vertically is arranged in the punching die groove. A through hole for the punch to pass through is vertically opened in the floating die table. The relief hole for the punch to pass through is vertically opened in the outer die of the punching head. Thus, when the punching head punches downward, the outer die cooperates with the punching die groove to punch the outer edge of the iron chip, and the relief hole of the outer die cooperates with the punch to punch the shaft hole of the iron chip. At this time, the iron chip moves downward relative to both the punching die groove and the punch. Therefore, the burrs generated on the outer edge and the shaft hole of the iron chip are all upward, ensuring the quality of the subsequent stacking and processing of the iron chip. At the same time, by arranging a spring in the punching seat that acts on the floating die table and applies an upward thrust, the floating die table can be pushed down by the punching head during the downward punching process of the punching head. After the punching is completed and the punching head returns upward, the floating die table can push the iron chip upward to facilitate the removal of the iron chip from the punching die groove.
[0010] In an improved solution, when only under the action of the spring thrust, the upper end surface of the floating die table is flush with the upper end surface of the punch and the upper end surface of the punching seat, so that the iron chip can directly separate from the punching die groove and the punch, facilitating subsequent transportation.
[0011] In an improved solution, a plurality of grooves are circumferentially arranged on the outer edge of the lower end surface of the outer die, and the grooves penetrate to the outer peripheral wall of the outer die. By arranging grooves on the outer die, strip-shaped connecting ribs can be formed at the positions corresponding to the grooves between the outer edge of the iron chip and the strip. The iron chip is not completely separated from the strip, that is, the iron chip can continue to be transported to the subsequent workstations with the strip, and the strip-shaped connecting ribs are cut off at the subsequent workstations, effectively improving the processing efficiency.
[0012] In an improved solution, a receiving cavity is provided at the position of the punching seat below the punching die groove. The spring is vertically arranged in the receiving cavity. A guide hole vertically penetrating to the receiving cavity is opened at the bottom of the punching die groove. A guide post is slidably inserted in the guide hole. The lower end of the guide post is connected to the spring and the upper end is connected to the floating die table. Thus, the sliding direction of the guide post is limited to the vertical direction through the guide hole, so that the elastic force of the spring received by the floating die table is always in the vertical direction, ensuring the stability of the floating die table during vertical movement.
[0013] In an improved solution, there are multiple guide holes which are circumferentially distributed around the punch, and a guide post is slidably inserted into each guide hole, thereby further improving the stability of the floating die table when moving vertically.
[0014] In an improved solution, the lower part of the punch is detachably connected to the stamping seat by bolts, thereby facilitating the disassembly, replacement and installation of the punch.
[0015] In an improved solution, the lifting drive member is a cylinder or an oil cylinder. The cylinder body of the lifting drive member is fixedly arranged and located above the stamping seat, and the cylinder rod of the lifting drive member extends downward and is connected to the stamping head. Description of the Drawings
[0016] Figure 1 It is an overall schematic diagram of a motor iron core chip recoiling device;
[0017] Figure 2 It is a schematic diagram of another embodiment of the stamping head of a motor iron core chip recoiling device.
[0018] Description of the Reference Numerals
[0019] 1. Stamping seat; 11. Stamping die groove; 12. Accommodating cavity; 13. Guide hole; 14. Guide post; 2. Punch; 3. Floating die table; 31. Through hole; 4. Spring; 5. Stamping head; 51. Outer die; 52. Avoidance hole; 53. Groove; 6. Lifting drive member. Detailed Embodiments
[0020] Those skilled in the art should understand that the following embodiments are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments according to needs to adapt to specific application scenarios.
[0021] In the description of the following embodiments, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.
[0022] In the embodiments of the present application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the horizontal height of the first feature is less than that of the second feature.
[0023] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0024] Please refer to Figure 1 , a motor iron core chip recoil device provided by an embodiment of the present utility model, comprising:
[0025] A lower punching assembly, including a punching base 1, a punch 2 and a floating die table 3. The punching base 1 is fixedly arranged, and a punching die groove 11 is formed on the upper end surface of the punching base 1. The punch 2 is fixed in the middle of the punching die groove 11. The floating die table 3 is located in the punching die groove 11 and can move vertically. The punching base 1 is provided with a spring 4 acting on the floating die table 3 and applying an upward thrust force so that a gap is formed between the lower side surface of the floating die table 3 and the bottom of the punching die groove 11. A through hole 31 is formed in the floating die table 3 along the vertical direction, and the through hole 31 is used for the punch 2 to pass through;
[0026] An upper punching assembly, including a punching head 5 and a lifting driving member 6. The punching head 5 is located above the punching die groove 11. The punching head 5 is provided with an outer die 51 corresponding to the punching die groove 11. An avoidance hole 52 for the punch 2 to pass through is formed in the middle of the outer die 51 along the vertical direction. The punching head 5 is driven by the lifting driving member 6 to realize lifting.
[0027] In the above solution, the punch 2 is arranged in the stamping die groove 11 of the stamping seat 1. Meanwhile, a floating die table 3 that can move vertically is arranged in the stamping die groove 11. A through hole 31 for the punch 2 to pass through is vertically formed in the floating die table 3. And an avoidance hole 52 for the punch 2 to pass through is vertically formed in the outer die 51 of the punching head 5. Thus, when the punching head 5 punches downward, the outer die 51 cooperates with the stamping die groove 11 to punch the outer edge of the iron chip. The avoidance hole 52 of the outer die 51 cooperates with the punch 2 to punch the shaft hole of the iron chip. At this time, the iron chip moves downward relative to both the stamping die groove 11 and the punch 2. Therefore, the burrs generated on the outer edge and the shaft hole of the iron chip are all upward, ensuring the quality of the subsequent stacking and processing of the iron chip. At the same time, by arranging a spring 4 in the stamping seat 1 that acts on the floating die table 3 and applies an upward thrust, during the downward punching process of the punching head 5, the floating die table 3 can be pushed down by the punching head 5. And when the punching is completed and the punching head 5 resets upward, the floating die table 3 can push the iron chip upward to facilitate the removal of the iron chip from the stamping die groove 11.
[0028] More specifically, in this embodiment, when only under the thrust of the spring 4, the upper end surface of the floating die table 3 is flush with the upper end surface of the punch 2 and the upper end surface of the stamping seat 1, so that the iron chip can directly break away from the stamping die groove 11 and the punch 2, facilitating subsequent transportation.
[0029] As an extended solution to the above embodiment, as Figure 2 shown, a plurality of grooves 53 are circumferentially arranged along the outer edge of the lower end surface of the outer die 51, and the grooves 53 penetrate through to the outer peripheral wall of the outer die 51. Due to the arrangement of the grooves 53 on the outer die 51, strip-shaped connecting ribs can be formed at the positions corresponding to the grooves 53 between the outer edge of the iron chip and the strip, so that the iron chip is not completely separated from the strip, that is, the iron chip can continue to be transported to the subsequent workstations along with the strip, and the strip-shaped connecting ribs are cut off at the subsequent workstations, effectively improving the processing efficiency.
[0030] In this embodiment, a receiving cavity 12 is provided at the position of the stamping seat 1 below the stamping die groove 11. The spring 4 is vertically arranged in the receiving cavity 12. A guide hole 13 that vertically penetrates through to the receiving cavity 12 is opened at the bottom of the stamping die groove 11. A guide post 14 is slidably inserted in the guide hole 13. The lower end of the guide post 14 is connected to the spring 4 and the upper end is connected to the floating die table 3. Thus, the sliding direction of the guide post 14 is restricted to the vertical direction through the guide hole 13, so that the elastic force of the spring 4 acting on the floating die table 3 is always in the vertical direction, ensuring the stability of the floating die table 3 during vertical movement.
[0031] Furthermore, there are multiple guide holes 13 and they are circumferentially distributed around the punch 2. Each guide hole 13 is slidably inserted with a guide post 14, further improving the stability of the floating die table 3 during vertical movement.
[0032] In this embodiment, the lower part of the punch 2 is detachably connected to the stamping seat 1 by bolts, facilitating the disassembly, assembly and replacement of the punch 2.
[0033] The lifting driving member 6 is preferably a cylinder or an oil cylinder. The cylinder body of the lifting driving member 6 is fixedly arranged and located above the stamping seat 1. The cylinder rod of the lifting driving member 6 extends downward and is connected to the stamping head 5.
[0034] It should be noted that in the description of this application, terms such as "inner" and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to this application; all directional indications (such as up, down, left, right, front, back, inner, outer) are only used to explain the relative positional relationships and movement conditions between components in a specific posture. If this specific posture changes, then the directional indications will also change accordingly.
[0035] In the description of this application, descriptions with reference to terms such as "one embodiment", "some embodiments", "in this embodiment", "specific examples", or "some examples", etc. mean that the specific features, mechanisms, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.
[0036] The above is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in this application should be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.
Claims
1. A motor lamination recoil device, characterized in that: include: A lower punch assembly comprises a punch seat (1), a punch (2) and a floating die table (3); the punch seat (1) is fixedly arranged and a punch die groove (11) is provided on the upper end surface of the punch seat (1); the punch (2) is fixed in the middle of the punch die groove (11); the floating die table (3) is located in the punch die groove (11) and can move vertically; the punch seat (1) is provided with a spring (4) which acts on the floating die table (3) and applies an upward thrust so that a gap is formed between the lower side surface of the floating die table (3) and the bottom of the punch die groove (11); the floating die table (3) is provided with a through hole (31) in the vertical direction, and the through hole (31) is used for the punch (2) to pass through; The upper punch assembly comprises a punch head (5) and a lifting drive member (6), wherein the punch head (5) is located above the punching die groove (11), the punch head (5) is provided with an outer die (51) corresponding to the punching die groove (11), and a avoidance hole (52) for the punch (2) to pass through is vertically opened in the middle of the outer die (51), and the punch head (5) is driven by the lifting drive member (6) to achieve lifting.
2. The motor core sheet recoil device according to claim 1, characterized in that: When only the thrust of the spring (4) is applied, the upper end surface of the floating die table (3) is flush with the upper end surface of the punch (2) and the upper end surface of the punch seat (1).
3. The motor core sheet recoil device according to claim 2, characterized in that: The outer edge of the lower end surface of the outer mold (51) is provided with a plurality of grooves (53) along the circumferential direction, and the grooves (53) penetrate to the outer peripheral wall of the outer mold (51).
4. The motor core sheet recoil device according to any one of claims 1 to 3, characterized in that: The stamping seat (1) is provided with a receiving cavity (12) at a position below the stamping die groove (11); the spring (4) is vertically arranged in the receiving cavity (12); the bottom of the stamping die groove (11) is provided with a guide hole (13) vertically penetrating to the receiving cavity (12); a guide column (14) is slidably inserted in the guide hole (13); the lower end of the guide column (14) is connected to the spring (4) and the upper end is connected to the floating die table (3).
5. The motor core sheet recoil device according to claim 4, characterized in that: The guide holes (13) are multiple and distributed circumferentially around the male mold (2), and a guide column (14) is slidably inserted in each of the guide holes (13).
6. The motor core sheet recoil device according to claim 1, characterized in that: The lower part of the punch (2) is detachably connected to the punch seat (1) via bolts.
7. The motor lamination recoil device according to claim 1, characterized in that: The lifting drive member (6) is a pneumatic cylinder or an oil cylinder. The cylinder body of the lifting drive member (6) is fixedly arranged and located above the punching seat (1). The cylinder rod of the lifting drive member (6) is downward and connected to the punching head (5).