Stator stamping die

Abstract

The utility model discloses a stator stamping die which comprises a movable die base, a fixed die base, a stamping die head and a die supporting disc, the stamping die head and the die supporting disc are arranged on the bottom face of the movable die base and the surface of the fixed die base respectively, the stamping die head and the die supporting disc are oppositely arranged, the opposite faces of the stamping die head and the die supporting disc are respectively provided with a stamping knife and a profiled groove which are correspondingly arranged, and a rotating shaft rod is rotationally installed on the inner side of the die supporting disc. The rotating shaft rod is fixedly connected with the output end of the indexing driving assembly and used for driving the stator material pieces to rotate in an indexing mode. According to the utility model, the indexing driving assembly is arranged to carry out stamping kinetic energy transduction and convert the stamping kinetic energy into indexing rotation of the stator material sheet, and only one area wire slot or a single wire slot is punched in each stamping, so that the torque required by Jiangxi blanking is effectively reduced, the abrasion of a cutter body is reduced, and the blanking effect and stability are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to stator processing technical field, concretely is a kind of stator stamping die. BACKGROUND

[0002] The existing stator stamping die usually adopts one-time forming blanking mode, that is, all line grooves of stator sheet are blanked synchronously in single stamping. The structure is mainly composed of fixed movable die holder and fixed die holder, and punch head and die holder plate are installed between movable die holder and fixed die holder. When stamping, punch head presses stator sheet on die holder plate, and all line grooves are punched out. However, this scheme requires blanking machine to have larger blanking torque, so that the load of the equipment itself is higher, and the blanking tool is subjected to larger pressure in the blanking process, which is easy to wear or damage, resulting in shorter tool life. In addition, due to excessive blanking force, stator sheet is easy to deform or bend, thereby affecting the processing quality of sheet.

[0003] Therefore, the existing problems are researched and improved, and a stator stamping die is provided to solve the existing problems, so as to solve the problems and improve the practical value. CONTENT OF UTILITY MODEL

[0004] The utility model aims at solving the technical problems existing in prior art or related art.

[0005] A kind of stator stamping die, comprising: movable die holder, fixed die holder and punch head and die holder plate arranged on the bottom surface of movable die holder and the surface of fixed die holder respectively, the punch head and die holder plate are oppositely arranged, and the opposite faces are respectively provided with corresponding arranged punch and die groove, the inner side of die holder plate is rotatably installed with rotating shaft rod, the rotating shaft rod is fixedly connected with the output end of index driving assembly, for driving stator sheet index rotation.

[0006] In the structure, the output end of index driving assembly is fixedly connected with rotating shaft rod, so that the accurate indexing of stator sheet can be realized, one line groove is blanked each time, the required torque for blanking is significantly reduced, tool wear is reduced, and the accuracy and consistency of blanking are improved.

[0007] The utility model discloses a further configuration in a preferable example can be: the index drive assembly includes ratchet disc, escapement claw and rotates and installs in the deflection lever and the punch lever of fixed mould base surface, the ratchet disc rotates and installs in the inside of fixed mould base of the mould tray, the bottom of the rotating shaft lever is fixedly connected with the axle surface of ratchet disc, the escapement claw rotates and installs in the fixed mould base surface and one side with the surface of ratchet disc is abutted, the bottom of the deflection lever is fixedly connected with the deflection axle of escapement claw, the bottom of the punch lever is equipped with the resistance tooth, the top surface of the deflection lever is equipped with the inclined surface of corresponding arrangement with resistance tooth. The structure design makes ratchet disc and escapement claw control through cooperation and index, thereby realizes the gradual rotation of stator sheet to the designated position, ensures the accurate blanking of every wire slot, improves the stability of blanking effect.

[0008] The utility model discloses a further configuration in a preferable example can be: the number of inclined surface and resistance tooth is two groups and about escapement claw and the axial line origin symmetry arrangement of deflection lever, when resistance tooth is down on the inclined surface abutment, promotes the deflection motion of deflection lever. Through setting up the symmetry arrangement of double sets of inclined surface and resistance tooth, can effectively disperse blanking stress, ensures the stability and durability of equipment when high frequency stamping, prolongs the service life of mould.

[0009] The utility model discloses a further configuration in a preferable example can be: the telescopic guide rod for guiding the downlink movement of movable die holder is equipped between movable die holder and fixed mould base, the bottom surface of movable die holder is equipped with the pressure bar for resistance pressure punch lever downlink, and pressure bar, deflection lever, punch lever are on same vertical line and are arranged in parallel with telescopic guide rod. Through the guiding design of telescopic guide rod, can guarantee movable die holder to keep accurate downlink path in the stamping process, makes punch lever realize accurate downlink control under the action of pressure bar, thereby improves the blanking accuracy of mould.

[0010] The utility model discloses a further configuration in a preferable example can be: the escapement claw includes the claw of contact with the surface of ratchet disc and vertical claw, and the claw and vertical claw are respectively located the two sides of escapement claw deflection axle, and alternately abut with the surface of ratchet disc. The structure design can realize free conversion between the different positions of escapement claw, make the claw and vertical claw can alternate contact, thereby form continuous index movement, ensure the coherence and automation of blanking process, and the fixed mould base surface is equipped with the extension spring of the claw surface connection of escapement claw, is used for realizing the elastic deflection reset of escapement claw after escapement claw deflection.

[0011] The utility model discloses a further configuration in a preferable example can be: the top of rotating shaft lever is equipped with magnetism, is used for adsorbing stator sheet and driving its deflection motion. The design fixes stator sheet by the mode of magnetic adsorption, ensures the stability of sheet in the blanking process, realizes automatic deflection after blanking simultaneously, improves the efficiency and precision of stamping.

[0012] The utility model discloses the beneficial effect obtained has:

[0013] 1. In the utility model, through setting index drive assembly carries out stamping kinetic energy conversion, and the index rotation of stator sheet is converted, only carries out the blanking work of a certain area line slot or single line slot in each stamping, effectively Jiangxi blanking required torque reduces cutter body wear, improves blanking effect and stability.

[0014] 2. In the utility model, the deflection of the pawl is realized by the cooperation of the deflection rod and the punch rod, and the intermittent index rotation of the shaft rod is realized by the movement cooperation of the pawl and the ratchet disc, and then the stamping effect of the movable die holder is conducted to form the index rotation of the stator sheet, that is, one line slot is blanked each time, and after blanking one line slot, it is automatically deflected by a certain angle to blank the next line slot, and the movement is coherent and the degree of automation is high. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the overall structure schematic diagram of an embodiment of the utility model;

[0016] Figure 2 It is the structure schematic diagram of the die head and the die holder disc of an embodiment of the utility model;

[0017] Figure 3 It is the structure schematic diagram of the index drive assembly of an embodiment of the utility model;

[0018] Figure 4 It is the structure schematic diagram of the deflection rod and the punch rod of an embodiment of the utility model.

[0019] Reference signs:

[0020] 100, movable die holder;110, telescopic guide rod;120, die head;130, die holder disc;121, punch;131, die groove;140, shaft rod;200, fixed die holder;

[0021] 300, index drive assembly;310, ratchet disc;320, pawl;330, deflection rod;340, punch rod;321, tension spring;331, inclined guide surface;341, tooth. DETAILED DESCRIPTION

[0022] To make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further explained in detail below by combining with specific implementation manners and referring to the drawings. It should be explained that the embodiments of the utility model and the features in the embodiments can be combined mutually without conflict.

[0023] It is understood that these descriptions are only exemplary, and are not intended to limit the scope of the utility model.

[0024] The utility model discloses a stator stamping die. Figures 1-4 Some embodiments of the utility model provide a kind of stator stamping die. Embodiment 1

[0025] In the embodiment, the movable die holder 100 and the fixed die holder 200 are connected by corresponding assembly methods to perform indexing blanking operations on the stator blank. The movable die holder 100 is provided with a punch head 120 on the bottom surface, and a telescopic guide rod 110 is used to achieve accurate downward guidance during the stamping process, thereby driving the punch 121 to punch the slot of the stator blank. The inner side of the supporting die disc 130 is rotatably installed with a rotating shaft rod 140, and the rotating shaft rod 140 is fixedly connected to the output end of the indexing drive assembly 300 to drive the rotation of the stator blank, thereby ensuring the accurate punching of one slot during each punching process.

[0026] In this structure, after each punching action is completed, the blank is rotated by the rotating shaft rod 140 to achieve indexing rotation, thereby aligning the position of the next slot with the punch 121, facilitating subsequent punching operations. Through this structure, the required torque for punching can be effectively reduced, the tool wear can be reduced, and the accuracy and efficiency of the punching action can be ensured.

[0027] In the embodiment, the indexing drive assembly 300 includes a ratchet disc 310, a pallet lever 320, a deflection lever 330, and a punch rotating lever 340. During the punching process, the combination of the ratchet disc 310 and the pallet lever 320 is used to drive the operation by alternately contacting the surface of the ratchet disc 310 with the pawl and vertical jaw structure of the pallet lever 320. After each punching action is completed, the punch rotating lever 340 is pushed by the deflection lever 330 to produce deflection movement under the action force of the engaging tooth 341 and the inclined guide surface 331. The surface of the fixed die holder 200 is provided with a tension spring 321 connected to the surface of the pawl of the pallet lever 320, which is used to reset the elastic deflection of the pallet lever 320 after the deflection of the pallet lever 320. At the same time, the pallet lever 320 is reset by the elastic stretching action of the tension spring 321 during the deflection process, thereby completing the indexing rotation in the gap of the punching.

[0028] Through this design, the stator blank can be indexed and rotated by a fixed angle after each punching action, ensuring the accurate positioning of the next slot, making the punching action stable and reliable, and improving the automation level of the equipment. Embodiment 2

[0029] In this embodiment, a telescopic guide rod 110 is installed between the movable die holder 100 and the fixed die holder 200, which is used to guide the downward movement of the movable die holder 100 during the punching process. The telescopic guide rod 110 ensures that the movable die holder 100 can move accurately in the vertical direction in the fixed track, so that the punch 121 is aligned with the punching position of the stator sheet. Through the guiding design of the telescopic guide rod 110, the accuracy of the entire punching process is ensured, so that the punch rotating rod 340 and the pressing rod maintain a consistent vertical downward path during the punching process, thereby improving the stability and punching accuracy of the mold.

[0030] The arrangement of the guide assembly not only improves the accuracy during the punching process, but also reduces deviations and errors, so that the mold maintains a stable operating state during high-frequency punching operations.

[0031] In this embodiment, the escapement pawl 320 adopts a combined design of a catch and a vertical pawl, which is installed on one side of the surface of the ratchet disc 310. In each punching action, the punch rotating rod 340 drives the deflection rod 330 to produce a deflection movement, which causes the escapement pawl 320 to deflect, and the catch and the vertical pawl alternately contact the surface of the ratchet disc 310, so that the indexing rotation of the stator sheet is smoothly realized. At the same time, through the elastic reset function of the tension spring 321, when the deflection is completed, the escapement pawl 320 automatically returns to the initial position, waiting for the next punching deflection operation.

[0032] The design of this structure ensures that the stator sheet can rotate by a fixed angle after each punching operation, thereby realizing the step-by-step punching of each slot position and improving the continuity and operation efficiency of the mold.

[0033] In this embodiment, the top end of the rotating shaft rod 140 has magnetism, which is used to adsorb the stator sheet and drive its deflection movement. Through this magnetic adsorption structure, the stator sheet can be firmly adsorbed on the surface of the rotating shaft rod 140, ensuring the stability during the punching process. After each punching operation, through the rotation of the rotating shaft rod 140, the stator sheet can be indexed and rotated by a preset angle, automatically aligning the next slot to be punched with the punch 121, thereby realizing continuous and automatic punching operation.

[0034] Through this magnetic adsorption fixing method, the stator sheet can maintain stable positioning during operation, ensuring the accuracy of the punching position, improving the overall operation efficiency, and effectively improving the automation degree and applicability of the equipment.

[0035] Through the above embodiments, the structure design and working effect of the stator punching mold are effectively embodied. Each punching action is accompanied by automatic indexing rotation of the stator sheet, realizing efficient and accurate stator slot punching, effectively reducing the moment demand, and prolonging the service life of the mold.

[0036] The working principle and use process of the utility model are as follows:

[0037] In the process of stator stamping, the indexing drive assembly 300 with appropriate indexing is selected according to the stator specification, the stator blank is fixed on the surface of the rotating shaft rod 140 by magnetic attraction, and the stator blank is guaranteed to coincide with the axis of the rotating shaft rod 140; under the action of the stamping machine, the movable die holder 100 is driven to stamping movement under the guidance of the telescopic guide rod 110, the punch 121 is used to punch the surface of the stator blank, and the punch rod 340 is pushed down synchronously in the punching movement, the deflection rod 330 and the escapement pawl 320 are deflected by the effect of the abutting tooth 341 and the surface of the inclined guide surface 331, the escapement pawl of the deflection rod 330 is in contact with the surface of the ratchet disc 310, and the longitudinal pawl is separated from the surface of the ratchet disc 310, and further in the upward retreat of the movable die holder 100, the escapement pawl 320 is pulled back by the tension spring 321, the longitudinal pawl of the escapement pawl 320 is in contact with the surface of the ratchet disc 310 again and pushes the ratchet disc 310 to rotate by a certain angle, drives the stator blank to deflect, and the position of the next punching line groove on the surface of the stator blank is opposite to the punch 121, waiting for the next punching; repeat the above operation to punch each line groove, improve the stability of the punching work.

[0038] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "a specific embodiment" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0039] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A stator stamping die, characterized in that, include: The moving mold base (100) and the fixed mold base (200) are respectively arranged on the bottom surface of the moving mold base (100) and the surface of the fixed mold base (200). The moving mold base (120) and the fixed mold base (200) are arranged opposite to each other and the opposite surfaces are respectively provided with corresponding punches (121) and grooves (131). A rotating shaft (140) is rotatably installed on the inner side of the mold base (130). The rotating shaft (140) is fixedly connected to the output end of the indexing drive assembly (300) to drive the stator sheet to rotate in an indexing manner. The indexing drive assembly (300) includes a ratchet disc (310), an escape pawl (320), and a deflector rod (330) and a punch rod (340) rotatably mounted on the surface of the fixed mold base (200). The ratchet disc (310) is rotatably mounted on the inner side of the mold support plate (130) and the fixed mold base (200). The bottom end of the rotating shaft rod (140) is fixedly connected to the axial surface of the ratchet disc (310). The escape pawl (320) is rotatably mounted on the surface of the fixed mold base (200) and one side abuts against the surface of the ratchet disc (310). The bottom end of the deflector rod (330) is fixedly connected to the deflection axis of the escape pawl (320). The bottom end of the punch rod (340) is provided with a stop tooth (341). The top surface of the deflector rod (330) is provided with an inclined guide surface (331) corresponding to the stop tooth (341).

2. The stator stamping die according to claim 1, characterized in that, The number of inclined guide surfaces (331) and abutment teeth (341) are both two sets and are symmetrically arranged about the origin of the axis of the escape pawl (320) and the deflection rod (330). When the abutment teeth (341) move down and abut against the surface of the inclined guide surfaces (331), they push the deflection rod (330) to deflect.

3. A stator stamping die according to claim 1, characterized in that, A telescopic guide rod (110) is provided between the moving mold base (100) and the fixed mold base (200) to guide the moving mold base (100) to move downward. The bottom surface of the moving mold base (100) is provided with a pressure rod to press against the downward movement of the punching rod (340). The pressure rod, the deflection rod (330), and the punching rod (340) are located on the same vertical line and are arranged parallel to the telescopic guide rod (110).

4. A stator stamping die according to claim 1, characterized in that, The escape pawl (320) includes an escape pawl and a longitudinal pawl that are in contact with the surface of the ratchet disc (310), and the escape pawl and the longitudinal pawl are located on both sides of the deflection axis of the escape pawl (320) and alternately abut against the surface of the ratchet disc (310).

5. A stator stamping die according to claim 4, characterized in that, The fixed mold base (200) is provided with a tension spring (321) connected to the surface of the escape pawl (320) to achieve elastic deflection reset of the escape pawl (320) after the escape pawl (320) deflects.

6. A stator stamping die according to claim 1, characterized in that, The top end of the rotating shaft (140) is magnetic, which is used to attract the stator sheet and drive the stator sheet to deflect.

Images