Stamping die for producing stator core

Abstract

The utility model provides a stamping die for producing a stator core, which comprises an upper die and a lower die which are matched with each other, the upper die can be close to or far away from the lower die, the upper end of the lower die is provided with a support table top for conveying coiled materials, the support table top is provided with a first end and a second end which are arranged along the length direction of the support table top, a first end and a second end are arranged on the upper die, a spraying station and a blanking station are sequentially arranged between the first end and the second end, a spraying device and a stamping device are arranged on the upper die, the spraying device comprises a nozzle, the nozzle is opposite to the spraying station, the stamping device comprises a punch, and the punch is opposite to the blanking station. When segmentation is needed, the adhesive removing agent is sprayed through the nozzle, so that the self-bonding coating on the silicon steel sheet loses the bonding function, the silicon steel sheet and other silicon steel sheets are not bonded after being overlapped, and the technical problem of solidification segmentation can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the production technical field of stator core especially relates to a stamping die for producing stator core. BACKGROUND

[0002] With the rapid development of new energy automobile industry, market competition is increasingly fierce, and the performance requirement of automobile driving motor is more and more strict. High efficiency, high power, high speed and other characteristics become the important direction of driving motor design, and the improvement of these performances depends on the selection and optimization of motor material to a great extent. As the main material of motor core, the performance of silicon steel sheet has a decisive influence on the overall performance of motor.

[0003] In recent years, in order to meet the demand of motor performance improvement, the use trend of silicon steel sheet gradually turns to thinner and higher strength material. The thickness of traditional silicon steel sheet is mostly 0.5mm, but with the progress of technology, it has gradually transitioned to 0.35mm, 0.27mm, 0.2mm, 0.15mm and even 0.10mm. The lamination between the silicon steel sheets is generally carried out in the following two ways, the first way is to use mechanical buckling points to laminate multiple silicon steel sheets together, this way has obvious defects: 1. It interferes with and destroys the magnetic circuit of the motor, which has a great influence on the limit performance of the motor; 2. The silicon steel sheet is extremely thin, and the strength will certainly be affected, the buckling force after using mechanical buckling points is insufficient, the lamination effect is poor, which leads to low lamination coefficient and affects the performance of the motor. The other way is to use self-bonding coating for bonding and lamination, which directly solves the defects caused by mechanical buckling points, but it also has certain shortcomings, that is, after punching the silicon steel sheet from the silicon steel sheet coil, multiple silicon steel sheets are directly laminated together and enter the curing device for heating and curing, it is impossible to control which silicon steel sheet is not cured to realize the segmentation of the silicon steel sheet. Since the production of stator core is a continuous operation of the whole production line until the whole silicon steel sheet coil is punched and cured, that is, the silicon steel sheet is continuously transmitted to the stamping die and the curing device for punching and curing, when the thickness of the laminated and cured silicon steel sheet needs to be controlled, that is, a certain number of silicon steel sheets are laminated and cured, the whole production line needs to be stopped and the punched silicon steel sheets are sent into the curing device for curing, or after the whole silicon steel sheet coil is punched, the number of silicon steel sheets is counted manually and sent into the curing device for curing in batches, which brings great inconvenience. Compared with the simple through piece isolation of mechanical buckling points, the self-bonding coating bonding method cannot realize the isolation and segmentation effect, therefore, it is urgent to solve the problem of isolation and segmentation of silicon steel sheets bonded by self-bonding coating. SUMMARY

[0004] In order to solve the problems in the prior art, the utility model provides a stamping die for producing stator core, through spraying the adhesive remover to make the self -bonding coating on the sheet lose the self -bonding function, realize the sectional function on the silicon steel sheet, solve the technical problem of solidification section.

[0005] The utility model discloses adopt the following technical scheme:

[0006] The utility model provides a stamping die for producing stator core, including the upper die and lower die of suitable adaptation, the upper die can be close to or far from the lower die, the lower die upper end is equipped with the support mesa for transmission coiled material, the support mesa has the first end and second end along its length direction is equipped with spraying station and blanking station in proper order between the first end with the second end, be equipped with spraying device and stamping device on the upper die, the spraying device includes the nozzle, the nozzle with spraying station is opposite, the stamping device includes the punch, the punch with blanking station is opposite.

[0007] Further, the nozzle is a plurality of, a plurality of nozzles are spaced and arranged on the same circumferential line.

[0008] Further, a pair of collecting grooves are arranged on the support mesa, the collecting grooves extend along the length direction of the support mesa, and the pair of collecting grooves are adjacent to both sides of the spraying station.

[0009] Further, the collecting grooves are recessed downward from the support mesa.

[0010] Further, the collecting grooves include guide side walls, the guide side walls extend along the length direction of the support mesa, the guide side walls are adjacent to the spraying station, and the spacing between the guide side walls corresponding to the pair of collecting grooves gradually increases from top to bottom.

[0011] Further, a suction station is further arranged between the spraying station and the blanking station, and a suction device is further arranged between the spraying device and the stamping device, the suction device includes a suction nozzle, the suction nozzle is arranged on the upper die, and the suction nozzle is opposite to the suction station.

[0012] Further, a blanking hole and a punching sheet collecting channel located below the blanking hole are arranged on the blanking station.

[0013] Further, a guide column is arranged in the punching sheet collecting channel, and the guide column, the punch and the punching sheet collecting channel are coaxially arranged.

[0014] Further, a curing device is arranged below the punching sheet collecting channel.

[0015] By adopting the technical scheme, the following technical effects are achieved: when segmentation is needed, the self-bonding coating on the silicon steel sheet loses the bonding function by spraying the adhesive removing agent, so that the silicon steel sheet and other silicon steel sheets are not bonded after being stacked, and the technical problem of solidification segmentation is solved. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application and are not a limitation on the present application.

[0017] Figure 1 is a structural schematic view of a stamping die for producing a stator core in the present application.

[0018] Figure 2 is Figure 1 a partial structural schematic view of a support table surface.

[0019] Figure 3 is another structural schematic view of a stamping die for producing a stator core in the present application.

[0020] Figure 4 is Figure 3 a partial structural schematic view of a support table surface.

[0021] Figure 5 is still another structural schematic view of a stamping die for producing a stator core in the present application.

[0022] Figure 6 is Figure 5 a partial structural schematic view of a support table surface.

[0023] Figure 7 is still another structural schematic view of a stamping die for producing a stator core in the present application.

[0024] Figure 8 is Figure 7 a partial structural schematic view of a support table surface.

[0025] Figure 9 is a sectional view of a spraying station and a collecting groove. DETAILED DESCRIPTION

[0026] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the present application will be further described in detail below with reference to the drawings. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of the present application.

[0027] It should be noted that like numerals and letters refer to like items throughout the accompanying drawings, and therefore, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0028] Unless otherwise defined, the technical terms or scientific terms used in the patent document should be understood as the usual meanings understood by those of ordinary skill in the art to which the present application belongs. The terms "first", "second" and similar words used in the patent specification and claims of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. Similarly, "one", "an" or "the" and similar words do not represent a quantity limitation, but represent the existence of at least one. "Including" or "containing" and similar words mean that the elements or objects appearing before "including" or "containing" cover the elements or objects listed after "including" or "containing" and their equivalents, and do not exclude other elements or objects. "Center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are only used to represent relative positional relationships, which may change accordingly when the absolute position of the described object changes, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0029] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] Some embodiments of the present application will be described in detail below with reference to the drawings. The features in the following embodiments can be combined with each other without conflict.

[0031] Please refer to Figures 1 to 9As shown, the utility model provides a kind of stamping die for producing stator core, including the upper die 1 and lower die 2 of adaptation, the upper die 1 can be close to or away from the lower die 2, the lower die 2 upper end is equipped with the support mesa 3 for transmission coil material, the length direction of the support mesa 3 is same with the transmission direction of coil material, the support mesa 3 has first end and second end along its length direction, coil material is transmitted from the first end to the second end direction, spraying station 4 and blanking station 5 are equipped in order between the first end and the second end, the upper die 1 is equipped with spraying device and stamping device, the spraying device includes nozzle 6, the nozzle 6 is opposite the spraying station 4, the stamping device includes punch 7, the punch 7 is opposite the blanking station 5.

[0032] The nozzle 6 can be one, at this time, the nozzle 6 can be similar to the form of shower, disperses and sprays glue remover, of course, the nozzle 6 can also be multiple, multiple nozzle 6 is spaced and arranged on the same circumferential line, at this time, adjacent nozzle 6 is opposite, to spray as far as possible to the upper whole piece coil material located in the spraying station 4, of course, it can also be irregular distribution, as long as it can spray to the self-adhesive coating on the whole piece coil material located in the spraying station 4 or the whole piece coil material on the spraying station avoiding the corresponding part of punch.

[0033] The nozzle 6 is equipped with control valve, so that it can be opened or closed according to the set program Nozzle 6.

[0034] In another embodiment, please refer to Figure 5 、 7 , 9 shows that the support mesa 3 is equipped with a pair of collection groove 8, the collection groove 8 extends along the length direction of the support mesa 3, a pair of collection groove 8 is next to the both sides of the spraying station 4, namely a pair of collection groove 8 is located on the both sides of coil material transmission path respectively.

[0035] The collection groove 8 is recessed from the support mesa 3, which includes a bottom wall 9 and a guide side wall 10, the guide side wall 10 extends along the length direction of the support mesa 3 and is next to the spraying station 4, and the spacing between a pair of guide side wall 8 corresponding to the collection groove 8 gradually increases from top to bottom.

[0036] Among them, the length of the collection groove 8 is preferably greater than the length of the spraying station 4 along the transmission direction of coil material.

[0037] By setting a pair of collecting grooves 8, the overflowed degreasing agent during spraying can overflow into the collecting grooves 8, and the overflowed degreasing agent and / or the mixture of the degreasing agent and the self-bonding coating mixture can be recycled by setting discharge holes 17 in the bottom wall 9 of the collecting grooves 8, or a suitable collecting frame is assembled in the collecting grooves 8, and the collecting frame is movably assembled with the collecting grooves 8, when the collecting frame collects a certain amount of the degreasing agent or the mixture of the degreasing agent and the coating, the collecting frame is manually taken out for cleaning, and in the embodiment, the discharge holes 17 are directly set in the bottom wall 9 of the collecting grooves 8 to collect the degreasing agent and the mixture of the degreasing agent and the self-bonding coating.

[0038] In another embodiment, as shown in FIGS. 4 and 5, Figure 3 、 7 The spraying station 4 and the blanking station 5 are further provided with a suction station 11, and the spraying device and the punching device are further provided with a suction device, the suction device includes a suction nozzle 12, the suction nozzle 12 is arranged on the upper die 1, and the suction nozzle 12 is opposite to the suction station 11.

[0039] The suction nozzle 12 is in communication with a pump body, when suction is needed, the pump body starts to work to extract the degreasing agent and the mixture of the degreasing agent and the self-bonding coating on the coiled material, the suction station 11 is preferably next to the spraying station 4, of course, the suction station 11 can also be spaced apart from the spraying station 4 by a certain distance, so that the degreasing agent can have sufficient contact time with the self-bonding coating to ensure the degreasing effect, and the distance between the suction station 11 and the spraying station 4 is determined according to the properties of the degreasing agent and the self-bonding coating to ensure the effective removal of the self-bonding coating.

[0040] The blanking station 5 is provided with a blanking hole 13 and a punching piece collecting channel 14 below the blanking hole 13, and the punching piece collecting channel 14 is further provided with a curing device 15 below, and the silicon steel punching piece punched by the punch 7 falls into the curing device 15 for heating and curing.

[0041] The punching piece collecting channel 14 is provided with a guide column 16, the guide column 16 vertically extends downward from the blanking station 5 to above the curing device 15, and the guide column 16, the punch 7 and the punching piece collecting channel 14 are coaxially arranged. Of course, the guide column 16 is not necessary.

[0042] The punching device, the curing device and the punching piece collecting channel 14 are the same as the prior art, and will not be described here.

[0043] When the solidification segmentation is needed, the control valve opens the nozzle 6, the nozzle 6 sprays the desmear agent to the coil in the spraying station 4, the overflowed desmear agent is collected by the collecting groove 8, the excess desmear agent on the coil and the mixture of the desmear agent and the self-bonding coating are sucked by the suction nozzle 12 and then transmitted to the blanking station 5, the punch 7 punches the coil, the punched pieces are transmitted downward along the guide column 16 and the punched piece collecting channel 14 into the solidification device 15 for heating and solidification, so that the solidification segmentation effect is realized. The coil needing desmear can be sprayed with the desmear agent through the program control, and then the subsequent solidification is segmented, the operation of the whole line does not need to be stopped, manual counting of the number of silicon steel sheet punched pieces is not needed, the coil of silicon steel sheet can be operated until all the punched pieces are completed after the coil of silicon steel sheet is put on line, and the production efficiency is greatly improved.

[0044] The above is only a specific implementation manner of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A stamping die for producing a stator core, characterized by, The device comprises a matched upper die and lower die, the upper die can be close to or away from the lower die, the upper end of the lower die is provided with a support table for conveying a coil material, the support table has a first end and a second end arranged along the length direction thereof, a spraying station and a blanking station are sequentially arranged between the first end and the second end, the upper die is provided with a spraying device and a stamping device, the spraying device comprises a nozzle, the nozzle is opposite to the spraying station, the stamping device comprises a punch, the punch is opposite to the blanking station.

2. The press die for producing a stator core according to claim 1, characterized by The nozzle is a plurality of nozzles, and the plurality of nozzles are arranged on the same circumferential line in a spaced manner.

3. The press die for producing a stator core according to claim 1, characterized by A pair of collecting grooves are arranged on the support table, the collecting grooves extend along the length direction of the support table, and the pair of collecting grooves are close to the two sides of the spraying station.

4. The press die for producing a stator core according to claim 3, characterized by The collecting grooves are recessed downward from the support table.

5. The press die for producing a stator core according to claim 3, characterized by The collecting grooves comprise guide side walls, the guide side walls extend along the length direction of the support table, the guide side walls are close to the spraying station, and the distance between the guide side walls corresponding to the pair of collecting grooves gradually increases from top to bottom.

6. The press die for producing a stator core according to claim 1, characterized by A suction station is further arranged between the spraying station and the blanking station, a suction device is further arranged between the spraying device and the stamping device, the suction device comprises a suction nozzle, the suction nozzle is arranged on the upper die, and the suction nozzle is opposite to the suction station.

7. The press die for producing a stator core according to claim 1, characterized by The blanking station is provided with a blanking hole, and the blanking hole is in communication with a punch sheet collecting channel located below the blanking hole.

8. The press die for producing a stator core according to claim 7, characterized by A guide column is arranged in the punch sheet collecting channel, and the guide column, the punch and the punch sheet collecting channel are coaxially arranged.

9. The press die for producing a stator core according to claim 7, characterized by A curing device is arranged below the punch sheet collecting channel.

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