A stator core production mold

Abstract

The present invention belongs to the technical field of stator core production, and specifically relates to a production mold for a stator core, which includes a base. A first mold base and a second mold base form a mold body. A plurality of forming holes are provided at the bottom of the forming cavity. The output end of the hydraulic rod extends out of the support frame and is equipped with a pressing plate. A support and rebound mechanism is assembled on the lower side of the sealing plate. A material storage mechanism is assembled on the upper side of the pressing plate. A plurality of discharge pipes communicating with the inside of the cavity are assembled on the lower side of the pressing plate. The length of the discharge pipes extending downward is lower than the length of the stamped parts. A discharge one-way valve is assembled on each of the plurality of discharge pipes. A plurality of blanking holes corresponding to the positions of the plurality of discharge pipes are provided on the upper side of the pressing plate. The present invention can automatically inject glue between two adjacent cores during the stamping process of the core, and then use the stamping pressure to press the overlapping cores together. Such a design can fix the cores in piles during the stamping process, reducing the processing steps of the cores and improving the processing efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of stator core production, and particularly relates to a production mold for a stator core. Background Art

[0002] The stator core is one of the most core components in current motors. The production and manufacturing process of the stator core includes two parts: punching sheet manufacturing and core pressing. The general process is to punch multiple cores, punch the cores into an annular state, and there are several winding holes on the inner wall (as Figure 1 shown), then stack multiple punched cores neatly together, then press the stacked cores, and fix the stacked cores by using glue or winding. However, separating the two steps will greatly extend the production time and delay the processing time, directly affecting the production efficiency;

[0003] Therefore, it is very necessary to propose a core production mold that presses while punching the sheet. Summary of the Invention

[0004] The purpose of the present invention is to provide a production mold for a stator core to solve the problems existing in the background art.

[0005] To achieve the above technical purpose, the technical solution adopted by the present invention is as follows:

[0006] A production mold for a stator core includes a base. A first mold base is provided on the upper side of the base. A second mold base is hinged to the front side of the first mold base. The first mold base and the second mold base form a mold body. A forming cavity is provided in the middle of the mold body. Several forming holes are provided at the bottom of the forming cavity. A support frame is fixedly connected to the upper side of the first mold base. A hydraulic rod is assembled on the upper side of the support frame. The output end of the hydraulic rod extends out of the support frame and is assembled with a pressing plate. A punching part corresponding to each of the several forming holes is assembled on the lower side of the pressing plate. A cavity is provided inside the pressing plate. An air vent communicating with the cavity is provided on the upper side of the pressing plate. A sealing plate is slidably and sealingly assembled in the cavity. A support and rebound mechanism is assembled on the lower side of the sealing plate. The lower end of the support and rebound mechanism is assembled with an annular plate located below the punching part. The annular plate surrounds the several punching parts for one week. The size of the annular plate matches the size of the forming cavity. A material storage mechanism is assembled on the upper side of the pressing plate. A feeding pipe is assembled between the material storage mechanism and the inner wall of the lower side of the cavity. The feeding pipe is equipped with an inlet one-way valve. Several discharging pipes communicating with the inside of the cavity are assembled on the lower side of the pressing plate. The length of the discharging pipes extending downward is lower than the length of the punching parts. Each of the several discharging pipes is equipped with an outlet one-way valve. Several blanking holes corresponding to the positions of the several discharging pipes are provided on the upper side of the pressing plate.

[0007] The support and rebound mechanism includes a number of connecting rods. The number of the connecting rods are evenly arranged in a ring on the upper side of the annular plate. Springs are sleeved on the outer surfaces of the connecting rods. The upper ends of the connecting rods extend into the cavity and are fixedly connected to the sealing plate. The connecting rods are all slidably and sealingly connected to the pressing plate.

[0008] The material storage mechanism includes a material storage cylinder arranged on the upper side of the pressing plate. Glue is stored inside the material storage cylinder. A sealing cover is assembled on the upper side of the material storage cylinder. The sealing cover is equipped with a through hole communicating with the inside of the material storage cylinder. The upper end of the feeding pipe is communicated with the lower side of the material storage cylinder.

[0009] A transparent observation port is arranged on the outer surface of the material storage cylinder.

[0010] A limiting mechanism is assembled between the first die base and the second die base. The limiting mechanism includes two fixing blocks. The two fixing blocks are respectively fixedly connected to the first die base and the second die base. The two fixing blocks are both located on the side far from the hinged side of the first die base and the second die base. A threaded hole is arranged in the middle of one of the fixing blocks. The other fixing block is threadedly connected with a screw rod matching the threaded hole. A handle is assembled at one end of the screw rod away from the threaded hole.

[0011] An armrest is assembled on the side of the second die base away from the first die base.

[0012] A first on-off valve assembled with the feeding pipe is fixedly connected to the outer surface of the pressing plate. A ventilation pipe communicating with the outside is also assembled between the first on-off valve and the feeding one-way valve. A second on-off valve is also assembled on the ventilation pipe.

[0013] Notch chutes matching the feeding pipe, the first on-off valve, the ventilation pipe and the second on-off valve are arranged on the inner wall of the forming cavity.

[0014] The annular plate is provided with a number of through holes corresponding to the stamping parts one by one.

[0015] The structure of the present invention is simple and reasonably designed. During the process of stamping the iron core, glue can be automatically injected between two adjacent iron cores, and then the overlapping iron cores can be pressed tightly by the stamping pressure. Such a design can realize the fixation of the iron cores in a pile during the stamping process, reduce the processing steps of the iron cores, and improve the processing efficiency. Brief Description of the Drawings

[0016] The present invention can be further illustrated by the non-limiting embodiments given in the drawings.

[0017] Figure 1 It is a schematic structural diagram of the iron core in an embodiment of a stator iron core production mold of the present invention;

[0018] Figure 2 It is a schematic structural diagram of an embodiment of a stator iron core production mold of the present invention;

[0019] Figure 3 Another structural schematic diagram of an embodiment of a stator core production mold of the present invention;

[0020] Figure 4 is Figure 3 The enlarged structural schematic diagram of part A in

[0021] Figure 5 A partial structural schematic diagram of an embodiment of a stator core production mold of the present invention;

[0022] Figure 6 A partial sectional structural schematic diagram of an embodiment of a stator core production mold of the present invention;

[0023] The main element symbols are explained as follows:

[0024] Base 1, first mold base 11, second mold base 12, mold body 13, forming cavity 14, forming hole 15, support frame 2, hydraulic rod 21, pressing plate 22, stamping part 221, cavity 23, vent hole 231, sealing plate 24, annular plate 25, feeding pipe 26, inlet check valve 27, discharging pipe 28, outlet check valve 29, blanking hole 291, connecting rod 3, spring 31, storage cylinder 32, sealing cover 33, through hole 34, transparent observation port 35, fixing block 4, threaded hole 41, screw rod 42, handle 43, armrest 44, first on-off valve 45, ventilation pipe 46, second on-off valve 47, notch chute 48, through hole 49. Specific embodiments

[0025] In order to enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0026] Embodiment 1

[0027] Such as Figure 2-6As shown in the figure, a production mold for a stator core of the present invention includes a base 1. A first mold base 11 is provided on the upper side of the base 1. A second mold base 12 is hinged to the front side of the first mold base 11. The first mold base 11 and the second mold base 12 form a mold body 13. A forming cavity 14 is provided in the middle of the mold body 13. A number of forming holes 15 are provided at the bottom of the forming cavity 14. A support frame 2 is fixedly connected to the upper side of the first mold base 11. A hydraulic rod 21 is assembled on the upper side of the support frame 2. The output end of the hydraulic rod 21 extends out of the support frame 2 and is assembled with a pressing plate 22. A number of stamping parts 221 corresponding to the forming holes 15 one by one are assembled on the lower side of the pressing plate 22. A cavity 23 is provided inside the pressing plate 22. A vent hole 231 communicating with the cavity 23 is provided on the upper side of the pressing plate 22. A sealing plate 24 is slidably and sealingly assembled in the cavity 23. A support and spring-back mechanism is assembled on the lower side of the sealing plate 24. The lower end of the support and spring-back mechanism is assembled with an annular plate 25 located below the stamping parts 221. The annular plate 25 surrounds the number of stamping parts 221 in a circle. The size of the annular plate 25 matches that of the forming cavity 14. A material storage mechanism is assembled on the upper side of the pressing plate 22. A feeding pipe 26 is assembled between the material storage mechanism and the inner wall of the lower side of the cavity 23. The feeding pipe 26 is assembled with an inlet one-way valve 27. A number of discharging pipes 28 communicating with the inside of the cavity 23 are assembled on the lower side of the pressing plate 22. The length of the discharging pipes 28 extending downward is lower than the length of the stamping parts 221. A number of discharging pipes 28 are all assembled with discharging one-way valves 29. A number of blanking holes 291 corresponding to the positions of the number of discharging pipes 28 one by one are provided on the upper side of the pressing plate 22.

[0028] Workers can place the core to be stamped in the forming cavity 14, and then start the hydraulic rod 21 to extend. The hydraulic rod 21 drives the pressing plate 22 to move downward. The pressing plate 22 extends into the forming cavity 14. Before the pressing plate 22 contacts the core, the annular plate 25 first contacts the core. Since the support and spring-back mechanism is compressed during the continuous downward movement of the pressing plate 22, the annular plate 25 drives the sealing plate 24 in the cavity 23 to move upward through the support and spring-back mechanism until the pressing plate 22 moves downward. A number of stamping parts 221 pass through the annular plate 25 and the core and extend into the forming holes 15, thus completing the stamping of the core.

[0029] Driven by the contact of the annular plate 25, the sealing plate 24 moves upward in the cavity 23, so that a negative pressure is formed in the space of the cavity 23 on the lower side of the sealing plate 24. The glue in the storage mechanism is sucked into the cavity 23 through the feeding pipe 26 and is located on the lower side of the sealing plate 24. After the iron core is stamped, the hydraulic rod 21 contracts, driving the pressing plate 22 to move upward and reset. In the initial process of the upward movement of the pressing plate 22, due to the resilient support of the support resilient mechanism, it is ensured that the annular plate 25 still contacts the upper surface of the iron core. Thus, the pressing plate 22 moves upward relative to the annular plate 25, and the annular plate 25 drives the sealing plate 24 to move downward in the cavity 23 through the support resilient mechanism. In this way, the glue in the cavity 23 can be extruded out of the cavity 23 through the discharge pipe 28. The glue passes through the discharge pipe 28 and is extruded out of the cavity 23 and then passes through the blanking hole 291 and falls on the surface of the iron core until the sealing plate 24 moves to the inner wall on the lower side of the cavity 23. At this time, the annular plate 25 will follow the pressing plate 22 to move upward and separate from the iron core. At this time, a new iron core can be placed into the forming cavity 14 and stacked on the upper side of the already stamped iron core. During the stamping process, due to the pressure of the pressing plate 22, the two iron cores on the lower side will be pressed together and fixed with glue. Similarly, iron cores can be placed in turn. During the stamping process, glue is dropped on the iron core at the top, and then all the iron cores below are pressed tightly during the next stamping;

[0030] After stamping is completed, in the initial state when the pressing plate 22 moves upward, the annular plate 25 will continuously press the iron core for a period of time. Professional design can prevent the stamped iron core from being stuck on the surface of the stamping part 221 and prevent the iron core from moving upward with the stamping part 221;

[0031] When the number of overlapping iron cores reaches the requirement, the operator can rotate the second die base 12 to separate one side of the second die base 12 from the first die base 11. At this time, the inside of the forming cavity 14 is exposed. At this time, the operator can take out the iron core, and then the second die base 12 and the first die base 11 can be rotated to form the die body 13.

[0032] The support resilient mechanism includes a plurality of connecting rods 3. The plurality of connecting rods 3 are annularly and uniformly arranged on the upper side of the annular plate 25. Springs 31 are sleeved on the outer surfaces of the plurality of connecting rods 3. The upper ends of the connecting rods 3 extend into the cavity 23 and are fixedly connected to the sealing plate 24. The plurality of connecting rods 3 are all slidably and sealingly connected to the pressing plate 22.

[0033] When the annular plate 25 first contacts the iron core, the sealing plate 24 is driven to move upward in the cavity 23 through the connecting rod 3, and the spring 31 is compressed. When the pressing plate 22 moves upward, it can abut against the annular plate 25 downward under the action of the extension of the spring 31, driving the annular plate 25 to move downward, and driving the sealing plate 24 to move downward and reset through the connecting rod 3.

[0034] The glue storage mechanism includes a glue storage cylinder 32 disposed above the pressing plate 22. Glue is stored inside the glue storage cylinder 32. A sealing cover 33 is assembled on the upper side of the glue storage cylinder 32. The sealing cover 33 is equipped with a through hole 34 communicating with the inside of the glue storage cylinder 32. The upper end of the feeding pipe 26 communicates with the lower side of the glue storage cylinder 32. The staff can open the sealing cover 33 to replenish glue into the glue storage cylinder 32. The design of the through hole 34 enables the air pressure inside the glue storage cylinder 32 to be the same as that of the outside world.

[0035] A transparent observation port 35 is provided on the outer surface of the glue storage cylinder 32. The design of the transparent observation port 35 facilitates the staff to observe the remaining amount of glue inside the glue storage cylinder 32.

[0036] A limiting mechanism is assembled between the first die base 11 and the second die base 12. The limiting mechanism includes two fixing blocks 4. The two fixing blocks 4 are respectively fixedly connected to the first die base 11 and the second die base 12. The two fixing blocks 4 are both located away from the side where the first die base 11 and the second die base 12 are hinged to each other. A threaded hole 41 is provided in the middle of one of the fixing blocks 4, and the other fixing block 4 is threadedly connected with a screw rod 42 that matches the threaded hole 41. A handle 43 is assembled at one end of the screw rod 42 away from the threaded hole 41.

[0037] When the screw rod 42 is screwed into the threaded hole 41, the first die base 11 and the second die base 12 can be limited to prevent the first die base 11 and the second die base 12 from separating. When the screw rod 42 is screwed out of the threaded hole 41, the first die base 11 and the second die base 12 can be separated. The design of the handle 43 facilitates the staff to rotate the screw rod 42.

[0038] An armrest 44 is assembled on the side of the second die base 12 away from the first die base 11. The design of the armrest 44 facilitates the staff to rotate the second die base 12.

[0039] Embodiment 2

[0040] As Figure 4-6 shown, a first on-off valve 45 assembled with the feeding pipe 26 is fixedly connected to the outer surface of the pressing plate 22. A ventilation pipe 46 communicating with the outside world is also assembled between the first on-off valve 45 and the feeding one-way valve 27. A second on-off valve 47 is also assembled on the ventilation pipe 46.

[0041] During the process of pressing the iron core, the first on-off valve 45 is opened and the second on-off valve 47 is closed, and the glue can enter the inside of the cavity 23 through the feeding pipe 26. When stamping the last iron core, the staff can close the first on-off valve 45 and open the second on-off valve 47. At this time, when the sealing plate 24 moves upward in the cavity 23, the outside air can be sucked into the cavity 23 through the feeding pipe 26 and the ventilation pipe 46, and then when the sealing plate 24 moves downward, the air can be discharged from the cavity 23. Such a design will not drip glue on the surface of the uppermost iron core.

[0042] The inner wall of the forming cavity 14 is provided with a notch chute 48 that matches the feeding pipe 26, the first on-off valve 45, the ventilation pipe 46, and the second on-off valve 47. With such a design, the feeding pipe 26, the first on-off valve 45, the ventilation pipe 46, and the second on-off valve 47 can enter the forming cavity 14 through the notch chute 48.

[0043] Embodiment III

[0044] As Figure 5 shown, the annular plate 25 is provided with a number of through holes 49 that correspond one-to-one to the stamping parts 221. With such a design, both the left and right sides of each punching of the iron core can be pressed by the annular plate 25, so that the deformation of the iron core during the punching process can be prevented.

[0045] The above embodiments only exemplarily illustrate the principles and effects of the present invention, rather than limiting the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A stator core production mold, including a base, characterized in that: A first mold base is provided on the upper side of the base, a second mold base is hinged to the front side of the first mold base, the first mold base and the second mold base form a mold body, a forming cavity is provided in the middle of the mold body, and a number of forming holes are provided at the bottom of the forming cavity. A support frame is fixedly connected to the upper side of the first mold base, a hydraulic rod is assembled on the upper side of the support frame, the output end of the hydraulic rod extends out of the support frame and is assembled with a pressing plate, a number of stamping parts corresponding to the forming holes one by one are assembled on the lower side of the pressing plate, a cavity is provided inside the pressing plate, a vent hole communicating with the cavity is provided on the upper side of the pressing plate, a sealing plate is slidably and sealingly assembled in the cavity, a support and rebound mechanism is assembled on the lower side of the sealing plate, and the lower end of the support and rebound mechanism is assembled with an annular plate located below the stamping parts. The annular plate surrounds the stamping parts in a circle, the size of the annular plate matches the forming cavity, a material storage mechanism is assembled on the upper side of the pressing plate, a feeding pipe is assembled between the material storage mechanism and the inner wall of the lower side of the cavity, the feeding pipe is equipped with an inlet check valve, a number of discharge pipes communicating with the inside of the cavity are assembled on the lower side of the pressing plate, the length of the discharge pipes extending downward is lower than the length of the stamping parts, and a number of the discharge pipes are all equipped with outlet check valves. A number of blanking holes corresponding to the positions of the discharge pipes one by one are provided on the upper side of the pressing plate. The support and rebound mechanism includes a number of connecting rods, the connecting rods are annularly and evenly arranged on the upper side of the annular plate, springs are sleeved on the outer surfaces of the connecting rods, the upper ends of the connecting rods all extend into the cavity and are fixedly connected with the sealing plate, and the connecting rods are all slidably and sealingly connected with the pressing plate. The material storage mechanism includes a material storage cylinder provided on the upper side of the pressing plate, glue is stored inside the material storage cylinder, a sealing cover is assembled on the upper side of the material storage cylinder, the sealing cover is equipped with a through hole communicating with the inside of the material storage cylinder, and the upper end of the feeding pipe is communicated with the lower side of the material storage cylinder.

2. A stator core production mold according to claim 1, characterized in that: A transparent observation port is provided on the outer surface of the material storage cylinder.

3. A stator core production mold according to claim 1, characterized in that: A limiting mechanism is assembled between the first mold base and the second mold base. The limiting mechanism includes two fixing blocks, the two fixing blocks are respectively fixedly connected with the first mold base and the second mold base, and the two fixing blocks are both located on the side far from the hinged side of the first mold base and the second mold base. A threaded hole is provided in the middle of one of the fixing blocks, and a screw rod matching the threaded hole is threadedly connected to the other fixing block. A handle is assembled at one end of the screw rod away from the threaded hole.

4. A stator core production mold according to claim 1, characterized in that: An armrest is assembled on the side of the second mold base away from the first mold base.

5. A stator core production mold according to claim 1, characterized in that: A first on-off valve assembled with the feeding pipe is fixedly connected to the outer surface of the pressing plate. A ventilation pipe communicating with the outside is also assembled between the first on-off valve and the inlet check valve, and the ventilation pipe is also equipped with a second on-off valve.

6. A stator core production mold according to claim 1, It is characterized in that: The inner wall of the forming cavity is provided with notch chutes that match the feeding pipe, the first on-off valve, the ventilation pipe, and the second on-off valve.

7. A stator core production mold according to claim 1, It is characterized in that: The annular plate is provided with a number of through holes corresponding one by one to the stamping parts.

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