Integrated forming and curing equipment for self-adhesive iron core

Abstract

The invention discloses a self-adhesive iron core integrated molding and curing device, which comprises a rack, a self-adhesive iron core tool, a pressurizing assembly, a heating assembly and a control module, and is characterized in that the rack is provided with at least one hot pressing station; the self-adhesion iron core tool is arranged on the hot pressing station in a replaceable mode. The self-adhesion iron core tool comprises an upper die and a lower die, wherein the upper die and the lower die are detachably matched and can move relative to each other. The pressurizing assembly is arranged on the rack and used for applying pressure to at least one of the upper die and the lower die; the heating assembly is arranged on the rack and used for heating the self-adhesive iron core tool; the control module is used for controlling the pressurization assembly and the heating assembly to work according to set hot pressing parameters. According to the technical scheme, the integrated forming and curing equipment for the self-adhesive iron core has the advantages that the yield of the iron core is increased, the production efficiency is improved, and machining requirements of various specifications are met.

Description

Technical Field

[0001] The present invention relates to the technical field of stator core manufacturing, and particularly to an integrally formed and cured self-adhesive core device. Background Art

[0002] With the wide application of motors and generators in industries, transportation, and household appliances, as an important component of the motor, the processing quality and production efficiency of the stator core directly affect the overall performance and market competitiveness of the motor. The traditional stator core processing technology usually includes multiple steps such as lamination, gluing, pressing, and curing, and different links rely on manual operation or the cooperation of multiple devices to complete. This production method is prone to having numerous steps and lacking automated control, resulting in low production efficiency.

[0003] Therefore, there is an urgent need to propose a new stator core production device to achieve the automated production of stator cores. Summary of the Invention

[0004] The main object of the present invention is to propose an integrally formed and cured self-adhesive core device, aiming to solve the technical problem of low production efficiency of the traditional stator core production process.

[0005] To achieve the above object, the integrally formed and cured self-adhesive core device proposed by the present invention includes a frame, a self-adhesive core tooling, a pressurizing component, a heating component, and a control module. Among them,

[0006] The frame has at least one hot pressing station;

[0007] The self-adhesive core tooling is removably disposed at the hot pressing station. The self-adhesive core tooling includes an upper mold and a lower mold that are detachably engaged and relatively movable. The upper mold and the lower mold cooperate to form a hot pressing cavity, and the hot pressing cavity is used to accommodate stator core laminations;

[0008] The pressurizing component is disposed on the frame and is used to apply pressure to at least one of the upper mold and the lower mold to cause the upper mold and the lower mold to cooperate to press the stator core laminations;

[0009] The heating component is disposed on the frame and is used to heat the self-adhesive core tooling;

[0010] The control module is in control connection with the pressurizing component and the heating component, and the control module is used to control the operation of the pressurizing component and the heating component according to the set hot pressing parameters.

[0011] The self-adhesive iron core integrated molding and curing equipment of the technical solution of this application provides a closed processing space through the hot pressing cavity formed by the cooperation of the upper die and the lower die, effectively avoiding the deviation of the surface deformation of the iron core blank during the pressing process, thus ensuring the accuracy of the shape of each part of the iron core and improving the yield rate of the stator iron core. At the same time, the control module can accurately regulate the temperature, pressure and time parameters in each stage, not only ensuring the accuracy of the finished product size, but also greatly improving the production efficiency. In addition, by replacing different self-adhesive iron core tooling and adjusting the hot pressing parameters, the equipment can quickly adapt to the processing requirements of different specifications of stator iron cores and achieve flexible production. In summary, the self-adhesive iron core integrated molding and curing equipment of the technical solution of this application has the advantages of improving the yield rate of iron cores, enhancing the production efficiency and adapting to the processing requirements of various specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention, and for those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0013] Figure 1 Structural schematic diagram of an embodiment of the self-adhesive iron core integrated molding and curing equipment of the present invention;

[0014] Figure 2 is Figure 1 front view of the self-adhesive iron core integrated molding and curing equipment shown;

[0015] Figure 3 Internal structural schematic diagram of an embodiment of the self-adhesive iron core integrated molding and curing equipment of the present invention;

[0016] Figure 4 Structural schematic diagram of the lower pressing assembly, heating footprint and unloading assembly in four hot pressing stations in an embodiment of the self-adhesive iron core integrated molding and curing equipment of the present invention;

[0017] Figure 5 Structural schematic diagram of the lower pressing assembly, heating footprint and unloading assembly in two hot pressing stations in an embodiment of the self-adhesive iron core integrated molding and curing equipment of the present invention;

[0018] Figure 6 Structural schematic diagram of the pressing assembly in an embodiment of the self-adhesive iron core integrated molding and curing equipment of the present invention;

[0019] Figure 7 Structural schematic diagram of the unloading assembly in an embodiment of the self-adhesive iron core integrated molding and curing equipment of the present invention;

[0020] Figure 8 Schematic diagram of the structure of the heating component in an embodiment of the self-adhesive iron core integrated molding and curing equipment of the present invention;

[0021] Figure 9 For Figure 8 Exploded view of the heating component shown;

[0022] Figure 10 For Figure 8 Cross-sectional view of the heating component shown;

[0023] Figure 11 Schematic diagram of the structure of the self-adhesive iron core tooling in an embodiment of the self-adhesive iron core integrated molding and curing equipment of the present invention;

[0024] Figure 12 For Figure 11 Schematic diagram of the state when the upper mold exits the lower mold of the self-adhesive iron core tooling shown;

[0025] Figure 13 For Figure 11 Cross-sectional view of the self-adhesive iron core tooling shown;

[0026] Figure 14 For Figure 11 Another cross-sectional view of the self-adhesive iron core tooling shown;

[0027] Figure 15 For Figure 11 Cross-sectional view of the lower mold of the self-adhesive iron core tooling shown;

[0028] Figure 16 For Figure 11 Schematic diagram of the structure of the upper mold of the self-adhesive iron core tooling shown.

[0029] Explanation of the reference numerals in the drawings:

[0030] 10. Frame; 10a. Hot pressing station; 11. Table board; 12. Base; 13. Protective cover; 20. Self-adhesive iron core tooling; 20a. Hot pressing cavity; 20b. First positioning structure; 20c. Detection channel; 21. Upper die; 211. Force application structure; 212. Pressure cover; 213. Stripping pad sleeve; 22. Lower die; 221. Positioning pad sleeve; 2211. Upper pad sleeve; 2212. Middle pad sleeve; 2213. Lower pad sleeve; 2214. Card slot; 222. Ejecting pad sleeve; 2221. First slot; 2222. Second slot; 23. Limiting structure; 231. First limiting post; 232. Second limiting post; 24. Die sleeve; 30. Pressurizing assembly; 31. First driving part; 32. Pressing head; 33. Pressure sensor; 40. Heating assembly; 41. Outer mold; 41a. Accommodating cavity; 411. Outer mold cover plate; 412. Outer mold sleeve; 413. Outer mold backing plate; 42. Heating coil; 43. Heat insulation cover; 431. Heat insulation cover plate; 432. Heat insulation side plate; 433. Heat insulation backing plate; 44. Outer bottom plate; 45. Temperature sensor; 46. Second positioning structure; 50. Stripping assembly; 51. Second driving part; 52. Ejecting part; 60. Control module; 70. Stator core laminations

[0031] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0034] In addition, if the embodiments of the present invention involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0035] The present invention provides a self-adhesive iron core integrated molding and curing device.

[0036] In an embodiment of the present invention, as Figures 1 to 16 shown, the self-adhesive iron core integrated molding and curing device includes a frame 10, a self-adhesive iron core tooling 20, a pressurizing assembly 30, a heating assembly 40, and a control module 60.

[0037] Among them, at least one hot pressing station 10a is provided on the frame 10, and this hot pressing station 10a is used to place the self-adhesive iron core tooling 20 to complete the hot pressing and forming operation of the stator core.

[0038] Specifically, the self-adhesive iron core tooling 20 is replaceably provided at the hot pressing station 10a. The self-adhesive iron core tooling 20 includes an upper die 21 and a lower die 22 that are detachably engaged and relatively movable. After the upper die 21 and the lower die 22 are closed, the two can cooperate to form a hot pressing cavity 20a, and this hot pressing cavity 20a is used to accommodate the stator core laminations 70. Herein, the stator core laminations 70 refer to the rough core obtained by laminating silicon steel sheets, and at least one side surface of the silicon steel sheet is pre-coated with a self-adhesive coating, and these self-adhesive coatings can be melted and cured under the action of a specific temperature and pressure to achieve self-adhesion of adjacent silicon steel sheets.

[0039] It should be noted that according to the different models of the stator core required to be manufactured, different self-adhesive iron core toolings 20 can be selected, such as a toothed stator core tooling, a circular stator core tooling, etc.

[0040] Specifically, the pressurizing assembly 30 is provided on the frame 10 and is used to apply pressure to at least one of the upper die 21 and the lower die 22 so that the upper die 21 and the lower die 22 cooperate to press the stator core laminations 70. For example, the pressurizing assembly 30 can push the upper die 21 towards the lower die 22 through a hydraulic cylinder, a pneumatic cylinder, or a servo mechanism to achieve the pressing effect.

[0041] The heating component 40 is also installed on the frame 10 and is used to heat the self-adhesive iron core tooling 20. Optionally, the heating component 40 can use methods such as electric heating sheets, heat pipes, and induction heating to heat the upper die 21 and the lower die 22, so that the temperature inside the tooling reaches the set value, thereby enabling the self-adhesive iron core material to complete bonding and curing at high temperatures.

[0042] Furthermore, the control module 60 is respectively connected to the pressurizing component 30 and the heating component 40 for control. The control module 60 is used to control the operation of the pressurizing component 30 and the heating component 40 according to the set hot pressing parameters. During the hot pressing process, the control module 60 can monitor the real-time data of the die temperature and the applied pressure to ensure that the process parameters are consistent with the preset values, thereby ensuring the forming quality of the iron core.

[0043] Specifically, the hot pressing parameters include pressure parameters, temperature parameters, and time parameters.

[0044] Specifically, the control module 60 internally integrates a PLC (Programmable Logic Controller) or a single-chip microcomputer and is equipped with corresponding algorithm software, which can preset and store the pressure, temperature, and time parameters at different stages. During the forming process of the self-adhesive iron core, the control module 60 will monitor in real time and automatically adjust the working states of pressurization and heating to ensure that the process is stable and meets the expected parameter requirements.

[0045] Exemplarily, the control module 60 can control the pressurizing component 30 and the heating component 40 according to the following hot pressing forming stages and parameters of the stator core laminations 70:

[0046] The first stage, the pressurization and heating stage:

[0047] In the first stage, the control module 60 sets the heating component 40 to an initial temperature of 100 °C, and the pressurizing component 30 applies a pressure of 0.1 N / mm 2 - 0.3 N / mm 2 This stage is mainly used to preheat and pre-press the stator core laminations to avoid stress concentration inside the stator core laminations caused by sudden changes in temperature and pressure. In addition, in this stage, the materials of each layer of the iron core blank can be initially bonded, and the self-adhesive materials inside it begin to soften. The control module 60 controls the time of this stage to be 30 seconds to 3 minutes to ensure that the materials will not deform due to premature adhesion.

[0048] The second stage, the pressurization, heating, and bonding stage:

[0049] After completing the first stage, the control module 60 increases the pressure of the pressurizing component 30 to 1 N / mm 2 - 2 N / mm 2, and raise the heating temperature to 180°C - 200°C. This stage is mainly used to further promote the complete flow of the self-adhesive material and bond various parts of the iron core laminations, making the material evenly distributed and fully cured. The heating time is controlled within 3 to 5 minutes to ensure the bonding strength.

[0050] The third stage, the pressure heating and bonding stage:

[0051] In the third stage, the control module 60 raises the pressure of the pressing component 30 to 3 N / mm 2 - 4 N / mm 2 , continue to maintain a high temperature of 180°C - 200°C, and maintain for 3 to 5 minutes. The high-pressure and high-temperature conditions in this stage further compress various parts of the iron core laminations, eliminate internal voids, and make the iron core reach the optimal structural density and strength.

[0052] The fourth stage, the pressure cooling and curing stage:

[0053] In the third stage, the control module 60 stops the operation of the heating component 40, maintains a pressure of 1 N / mm 2 - 2 N / mm 2 , and allows the mold to cool naturally. During the cooling process, the control module 60 will monitor the gradual decrease in the mold temperature to ensure that the temperature evenly drops to room temperature. The pressure maintenance in this stage can prevent shrinkage deformation during the cooling of the material and ensure the dimensional accuracy and shape stability of the finished product.

[0054] It can be understood that the self-adhesive iron core integrated forming and curing equipment of the technical solution of the present application provides a closed processing space through the hot pressing cavity 20a formed by the cooperation of the upper mold 21 and the lower mold 22, effectively avoiding the deviation of the surface deformation of the iron core blank during the pressing process, thereby ensuring the accuracy of the shape of each part of the iron core and improving the yield rate of the stator iron core.

[0055] At the same time, the control module 60 can accurately regulate the temperature, pressure and time parameters of each stage, not only ensuring the dimensional accuracy of the finished product, but also greatly improving the production efficiency. In addition, by replacing different self-adhesive iron core toolings 20 and adjusting the hot pressing parameters, the equipment can quickly adapt to the processing requirements of different specifications of stator iron cores and achieve flexible production.

[0056] In summary, the self-adhesive iron core integrated forming and curing equipment of the technical solution of the present application has the advantages of improving the yield rate of the iron core, enhancing the production efficiency, and adapting to the processing requirements of various specifications.

[0057] In some embodiments, four hot pressing stations 10a are spaced apart on the frame 10, and each hot pressing station 10a can be independently used for the hot pressing work of the self-adhesive iron core.

[0058] Specifically, a self-adhesive iron core tooling 20 is provided on each hot pressing station 10a, and each hot pressing station 10a is provided with an independent pressing assembly 30 and a heating assembly 40. Meanwhile, the control module 60 can control the pressing assembly 30 and the heating assembly 40 of each hot pressing station 10a respectively.

[0059] With such a setting, it can adapt to the parallel production of multiple stations, significantly improving the production efficiency of the equipment; at the same time, the tooling can be flexibly replaced and the hot pressing parameters can be adjusted at each station to meet the production requirements of stator cores of different specifications. Since each station is independently controlled, the entire equipment operates more efficiently and flexibly, reducing the impact on the overall production progress when a single station fails. This design realizes the high-efficiency and modular management of the equipment, further improving the yield rate and production efficiency of the stator core, and meeting the requirements of multi-variety and high-precision production.

[0060] In some embodiments, the frame 10 includes a table top 11, and the heating station is formed on the table top 11. Correspondingly, the heating assembly 40 is provided on the table top 11. With such a design, it is convenient for the assembly of the heating assembly 40 and the installation of the self-adhesive iron core tooling 20 in the heating assembly 40, facilitating the operation of the staff.

[0061] Of course, the design of the present application is not limited thereto. In other embodiments, the hot pressing station 10a can be formed on the lower side of the table top 11.

[0062] In some embodiments, the frame 10 further includes a protective cover 13 and a base 12. Among them, the table top 11 is arranged on the base 12, and the protective cover 13 covers the table top 11 and forms a processing window corresponding to the hot pressing station 10a.

[0063] By arranging the table top 11 on the base 12, the vertical space of the curing equipment can be increased, thereby providing installation space and protection for other mechanisms to save the floor area of the curing equipment. At the same time, the heating assembly 40 can be separated from the operation area through the protective cover 13, avoiding the influence of the high-temperature area on the operators and improving the safety and stability of the equipment.

[0064] In some embodiments, the heating assembly 40 includes an outer mold 41 and a heating coil 42.

[0065] Specifically, the outer mold 41 is arranged at the hot pressing station 10a. The outer mold 41 encloses to form a receiving cavity 41a for receiving the self-adhesive iron core tooling 20. The outer mold 41 is further provided with a first opening (not labeled) communicating with the receiving cavity 41a, and this first opening is used for the self-adhesive iron core tooling 20 to enter and leave the receiving cavity 41a.

[0066] Specifically, the outer mold 41 includes structures such as an outer mold sleeve 412, an outer mold cover plate 411, and an outer mold backing plate 413. These structures enclose each other to form a receiving cavity 41a. Among them, the outer mold sleeve 412 is sleeved on the outside of the self-adhesive iron core tooling 20, and the outer mold cover plate 411 and the outer mold backing plate 413 are respectively arranged on the upper and lower sides of the self-adhesive iron core tooling 20.

[0067] Furthermore, the heating coil 42 is sleeved on the outside of the outer mold 41 and is electrically connected to the control module 60. The heating coil 42 is used to heat the self-adhesive iron core tooling 20. Specifically, the heating coil 42 is sleeved on the outside of the outer mold sleeve 41 and is used to uniformly heat the outer mold 41 and the self-adhesive iron core tooling 20 inside it. The closed outer mold 41 and the heating coil 42 closely attached to its outside cooperate to improve the heat conduction efficiency and make the heating process more uniform and stable.

[0068] Optionally, the heating coil 42 can be a resistance wire type heating coil 42, a ceramic heating coil 42, a cast aluminum heating coil 42, etc.

[0069] It can be understood that due to the combined design of the outer mold 41 and the heating coil 42, while ensuring the thermal energy utilization efficiency, this equipment provides a stable heating environment for the self-adhesive iron core tooling 20. The closed outer mold 41 structure not only improves the heating uniformity but also avoids the interference of the external environment on the process.

[0070] It is worth noting that the design of this application is not limited to this. In other embodiments, the heating component 40 can also heat the self-adhesive iron core tooling 20 by means of inductive heating.

[0071] In some embodiments, the heating component 40 further includes a heat insulation cover 43, and the heat insulation cover 43 surrounds the outside of the outer mold 41.

[0072] Specifically, the heat insulation cover 43 includes structures such as a heat insulation cover plate 431, heat insulation side plates 432, and a heat insulation backing plate 433. Among them, the heat insulation side plates 432 enclose the periphery of the heating coil 42, and the heat insulation cover plate 431 and the heat insulation backing plate 433 are respectively arranged on the upper and lower sides of the outer mold 41.

[0073] Optionally, the heat insulation cover 43 is made of high-temperature resistant materials (such as ceramic fiber board or composite heat insulation materials), which can effectively block the outward diffusion of heat, reduce energy loss, and improve the overall thermal efficiency of the equipment. At the same time, this structure ensures that the external environmental temperature will not rise due to the heating of the tooling, avoiding the impact of high temperature on the operators and surrounding equipment.

[0074] To facilitate the entry and exit of the self-adhesive iron core tooling 20, a second opening (not labeled) is provided on the heat shield 43, which communicates with the first opening of the outer mold 41. When the upper mold 21 needs to be replaced, the self-adhesive iron core tooling 20 can smoothly complete the entry and exit operations through the two openings. In addition, the opening design of the heat shield 43 not only ensures a convenient replacement process but also minimizes heat leakage in the opening area, maintaining a stable internal temperature.

[0075] It can be understood that by adding the heat shield 43 outside the heating coil 42 and the outer mold 41, the equipment further optimizes the thermal energy utilization efficiency, ensuring temperature uniformity and stability during the heating process. At the same time, the design of the heat shield 43 effectively reduces the rise of the external ambient temperature, improving the safety and energy efficiency of the equipment.

[0076] Furthermore, the heating assembly 40 further includes an outer bottom plate 44, which is provided on the lower side of the heat insulation pad 433 for installing the heat insulation side plate 432.

[0077] In some embodiments, a first positioning structure 20b is provided on the outer wall of the self-adhesive iron core tooling 20.

[0078] Further, the heating assembly 40 further includes a second positioning structure 46 provided on the side wall of the accommodation cavity 41a. The first positioning structure 20b and the second positioning structure 46 cooperate along the direction in which the self-adhesive iron core tooling 20 enters the accommodation cavity 41a to position the self-adhesive iron core tooling 20 in the accommodation cavity 41a.

[0079] Optionally, the first positioning structure 20b can be in the form of a raised guide bar, a positioning groove, or a snap bump, etc. Correspondingly, the second positioning structure 46 can be a guide rail groove corresponding to the raised guide bar of the stator core tooling, or a bump cooperating with the tooling positioning groove, or a groove structure 2214 cooperating with the tooling snap, etc.

[0080] Specifically, when the tooling enters the accommodation cavity 41a, the first positioning structure 20b and the second positioning structure 46 are smoothly engaged, ensuring that the tooling slides along a fixed path and is positioned at the designated position. This design not only improves the installation accuracy but also reduces the time for manual adjustment. At the same time, in the case of multiple replacements of the tooling, the cooperation of the positioning structures ensures the consistency of each operation, avoiding processing problems caused by errors.

[0081] In some embodiments, the self-adhesive iron core tooling 20 is further provided with a temperature detection channel 20c and a channel entrance communicating with the temperature detection channel 20c. The temperature detection channel 20c is provided on the side wall of the hot pressing cavity 20a for transmitting the real-time temperature inside the tooling, and the channel entrance is formed on the surface of the self-adhesive iron core tooling 20 to facilitate the insertion of an external sensor for temperature measurement.

[0082] Optionally, the channel inlet is provided on the upper surface of the lower die 22.

[0083] Furthermore, the heating assembly 40 further includes a temperature sensor 45. The temperature sensor 45 is electrically connected to the control module 60 and partially extends into the temperature detection channel 20c. A part of the temperature sensor 45 extends into the temperature detection channel 20c from the outside and fits closely with the channel to ensure the accuracy of temperature data. And the measured temperature is transmitted to the control module 60 in real time for temperature monitoring and adjustment during the hot pressing process of the self-adhesive iron core.

[0084] Specifically, after receiving the data fed back by the temperature sensor 45, the control module 60 will automatically adjust the output power of the heating assembly 40 to ensure that the temperature inside the hot pressing cavity 20a is always maintained within a preset range. If the temperature deviates from the target parameters, the control module 60 will quickly adjust the power of the heating coil 42.

[0085] It can be understood that the design of the temperature detection channel 20c makes the temperature sensor 45 close to the hot pressing cavity 20a, avoiding the possible errors caused by surface temperature measurement, further improving the temperature measurement accuracy, so as to realize accurate temperature monitoring, and then realize accurate temperature control during the hot pressing process of the stator core, ensuring that the self-adhesive iron core material is bonded and cured within the optimal temperature range.

[0086] In some embodiments, the pressing assembly 30 includes a first driving member 31 and a pressing head 32. The first driving member 31 is provided on one side of the hot pressing operation (in this embodiment, the first driving member 31 is provided on the upper side of the table board 11), and is electrically connected to the control module 60. The pressing head 32 is drivingly connected to the first driving member 31 and approaches or moves away from the hot pressing station 10a (i.e., approaches or moves away from the table board 11) under the drive of the first driving member 31.

[0087] Optionally, the first driving member 31 can adopt an actuator such as a hydraulic cylinder, a pneumatic cylinder or a servo motor to provide sufficient pressure and achieve precise control.

[0088] Specifically, in this embodiment, when the self-adhesive iron core tooling 20 is disposed in the accommodating cavity 41a of the outer mold 41, its lower die 22 is at the bottom, and the upper die 21 faces the pressing head 32 of the pressing assembly 30. Therefore, in this embodiment, the pressing assembly 30 presses against the upper die 21 of the self-adhesive iron core tooling 20 to make the upper die 21 and the lower die 22 of the self-adhesive iron core tooling 20 cooperate to press the stator core laminations 70.

[0089] It can be understood that by adopting driving methods such as hydraulic cylinders, air cylinders or servo motors, the curing equipment is equipped with high-precision pressure control capabilities, can adapt to the processing requirements of stator cores of different specifications, and improves the production consistency and the yield rate of good products. At the same time, this design places the main actuator of the pressurizing assembly 30 on the upper side of the table board 11, avoiding the influence of the high-temperature environment on the drive system, extending the service life of the equipment, and improving the convenience of maintenance and production efficiency.

[0090] In some embodiments, the pressurizing assembly 30 further includes a pressure sensor 33. One side of the pressure sensor 33 is connected to the power output end of the second driving member 51, the other side is connected to the pressing head 32, and the pressure sensor 33 is electrically connected to the control module 60.

[0091] Specifically, during the process of the driving member applying pressure, the pressure sensor 33 senses the magnitude of the force applied by the pressing head 32 in real time and transmits the data to the control module 60.

[0092] Specifically, the pressure sensor 33 is electrically connected to the control module 60 and transmits the real-time pressure data collected during the pressing process to the control module 60. The control module 60 compares the real-time data with the preset process parameters. If it detects that the pressure is insufficient or exceeds the target range, it will immediately adjust the power output of the second driving member 51 to ensure that the pressure in each stage is within the set range.

[0093] It can be understood that the pressure sensor 33 in the present application realizes real-time monitoring and precise feedback of the pressing process through its connection with the second driving member 51 and the pressing head 32. The control module 60 performs dynamic adjustment based on the data of the pressure sensor 33 to ensure that the pressure applied in each stage is consistent with the preset parameters, thereby improving the quality of the finished product.

[0094] In some embodiments, the lower die 22 of the self-adhesive iron core tooling 20 includes a positioning bushing 221 and an ejecting bushing 222. The positioning bushing 221 is hollow. The upper die 21 is inserted into the lower die 22 and exposes from the opening at one end of the positioning bushing 221 (i.e., the upper end of the positioning bushing 221 (the end facing the pressurizing assembly 30 / the end facing away from the table board 11)). The ejecting bushing 222 is arranged in the positioning bushing 221. One end of the ejecting bushing 222 abuts against the upper die 21, and the other end exposes from the opening at the other end of the positioning bushing 221 (i.e., the lower end of the positioning bushing 221 (the end facing away from the pressurizing assembly 30 / the end facing the table board 11)).

[0095] Specifically, the ejecting bushing 222 can move in the positioning bushing 221 and can be disengaged from the opening at the upper end of the positioning bushing 221. At the same time, the upper die 21 can also enter or disengage from the positioning bushing 221 through the opening at the upper end of the positioning bushing 221.

[0096] Furthermore, the self-adhesive iron core integrated molding and curing equipment of the present application further includes a material discharging assembly 50. The material discharging assembly 50 includes a second driving member 51 and an ejecting member 52. The second driving member 51 is installed on the other side of the hot pressing station 10a (in this embodiment, the second driving member 51 is installed on the lower side of the table board 11), and is electrically connected to the control module 60. The ejecting member 52 is drivingly connected to the second driving member 51, and under the drive of the second driving member 51, abuts against the ejecting pad sleeve 222 to eject the upper mold 21 from the lower mold 22 (the table board 11 is provided with an ejecting channel for the ejecting member 52 to rise).

[0097] Optionally, the second driving member 51 can be selected from actuators such as hydraulic cylinders, pneumatic cylinders or servo motors.

[0098] Specifically, after the stator iron core molding and curing is completed, the control module 60 issues an instruction to drive the second driving member 51 to start the ejecting member 52. The ejecting member 52 moves upward and abuts against the ejecting pad sleeve 222 to eject the formed stator iron core and the upper mold 21 from the positioning pad sleeve 221, thereby realizing the material discharging of the stator iron core. This design not only automates the material discharging process, but also prevents misalignment and damage that may be caused by manual operation, avoids the error of manual disassembly, and improves the automation level and efficiency of the production process.

[0099] It should be noted that the design of the present application is not limited to this. In other embodiments, the lower mold 22 may be inserted into the upper mold 21, or the end faces of the upper mold 21 and the lower mold 22 may be mutually attached to form a hot pressing cavity 20a.

[0100] In some embodiments, the self-adhesive iron core tooling 20 further includes a limiting structure 23 and a die sleeve 24. Among them,

[0101] The limiting structure 23 is at least partially disposed in the hot pressing cavity 20a. The limiting structure 23 is used for the stator iron core laminations 70 to be inserted, and is used for pressing the inner side surfaces of the stator iron core laminations 70 during the hot pressing process of the stator iron core laminations 70.

[0102] It should be noted that the limiting structure 23 can be selectively provided. In some embodiments, the limiting structure 23 is at least partially located in the hot pressing cavity 20a for the stator iron core laminations 70 to be inserted. In another embodiment, the limiting structure 23 is entirely located in the hot pressing cavity 20a for the stator iron core laminations 70 to be inserted. In short, as long as the stator iron core laminations 70 can be inserted, it can be specifically set according to the actual situation, and the present application does not make specific limitations on this.

[0103] The die sleeve 24 is at least partially disposed in the hot pressing cavity 20a. The die sleeve 24 is used for sleeving on the outer surface of the stator iron core laminations 70, and is used for pressing the outer surface of the stator iron core laminations 70 during the hot pressing process of the stator iron core laminations 70.

[0104] Among them, the die sleeve 24 can be selectively provided. In some embodiments, at least a part of the die sleeve 24 is located inside the hot pressing cavity 20a, and the part of the die sleeve 24 located inside the hot pressing cavity 20a is sleeved on the outer surface of the stator core laminations 70. In another embodiment, the entire die sleeve 24 is located inside the hot pressing cavity 20a, and the entire die sleeve 24 is sleeved on the outer surface of the stator core laminations 70. In short, as long as the die sleeve 24 can be completely sleeved on the outer surface of the stator core laminations 70, it can be specifically set according to the actual situation, and the present application does not make specific restrictions on this.

[0105] Specifically, in the self-adhesive core tooling 20, the upper die 21 and the lower die 22 respectively form the upper wall surface and the lower wall surface of the hot pressing cavity 20a. During the hot pressing forming process of the stator core, the upper wall surface of the hot pressing cavity 20a is attached to the upper surface of the stator core laminations 70, and the lower wall surface of the hot pressing cavity 20a is attached to the lower surface of the stator core laminations 70 to prevent the upper surface and the lower surface of the stator core laminations 70 from deforming beyond expectations. In addition, the outer side surface of the limiting structure 23 is pressed against the inner side surface of the stator core laminations 70 to prevent the inner side surface of the stator core laminations 70 from deforming beyond expectations. At the same time, during the hot pressing process of the stator core laminations 70, the inner side surface of the die sleeve 24 is attached to the outer side surface of the stator core laminations 70 to prevent the inner side surface of the stator core laminations 70 from deforming beyond expectations.

[0106] In this way, the upper wall surface, the lower wall surface, the limiting structure 23 and the die sleeve 24 can be used to limit the stator core laminations 70 in the up-down direction and the inside-out direction, and then realize the all-round limitation of the stator core laminations 70. In this way, when hot pressing the stator core laminations 70, it is possible to prevent the stator core laminations 70 from deforming towards a certain side, and the yield rate of the hot-pressed formed stator core can be improved.

[0107] In some embodiments, the material of the die sleeve 24 is tungsten alloy. As we know, tungsten alloy is a high-temperature material with good heat resistance and pressure resistance. Therefore, choosing tungsten alloy material to make the die sleeve 24 can make the deformations (deformation direction and amount of deformation) of the stator core laminations 70 and the die sleeve 24 basically the same under the same temperature conditions and pressure conditions. Thus, it is possible to avoid the problem that the size accuracy of the finished stator core does not meet the standard (such as uneven upper surface, uneven inner surface, uneven outer surface, uneven lower surface, etc.) due to the inconsistent deformation of the die sleeve 24 and the core blank during the hot pressing forming process of the stator core, and further improve the yield rate of the product.

[0108] Optionally, the material of the die sleeve 24 is tungsten steel.

[0109] In some embodiments, a card slot 2214 is provided on the inner wall of the positioning pad sleeve 221, the die sleeve 24 is embedded in the card slot 2214, and the inner side surface of the die sleeve 24 is flush with the inner wall of the positioning pad sleeve 221.

[0110] With such a design, the inner wall of the positioning pad sleeve 221, the inner wall of the die sleeve 24, the side wall of the upper die 21, and the stator core laminations 70 can be closely fitted, thereby ensuring the hot pressing accuracy of the stator core laminations 70. At the same time, this design also facilitates the detachment of the formed stator core and the upper die 21 from the lower die 22.

[0111] Furthermore, the positioning pad sleeve 221 includes an upper pad sleeve 2211 and a middle pad sleeve 2212 that are sequentially connected along the direction in which the upper die 21 is inserted into the lower die 22. The upper pad sleeve 2211 forms the upper wall of the card slot 2214 and fits against the upper end face of the die sleeve 24. The middle pad sleeve 2212 forms the side wall of the card slot 2214 and fits against the outer side face of the die sleeve 24. The upper pad sleeve 2211 and the middle pad sleeve 2212 are detachably connected.

[0112] Specifically, when installing and disassembling the die sleeve 24, the upper pad sleeve 2211 and the middle pad sleeve 2212 can be separated so that a notch is formed at the upper end of the card slot 2214. Workers can take out the die sleeve 24 from the card slot 2214 through this notch or put the die sleeve 24 into the card slot 2214 through this notch. This reduces the difficulty of assembling and disassembling the die sleeve 24. Among them, the upper pad sleeve 2211 and the middle pad sleeve 2212 can be connected by means of snap connection, threaded fasteners, etc.

[0113] Furthermore, the positioning pad sleeve 221 further includes a lower pad sleeve 2213. The upper pad sleeve 2211, the middle pad sleeve 2212, and the lower pad sleeve 2213 are sequentially connected along the direction in which the upper die 21 is inserted into the lower die 22. The lower pad sleeve 2213 forms the lower wall of the card slot 2214 and fits against the lower end face of the die sleeve 24. The lower pad sleeve 2213 and the middle pad sleeve 2212 are detachably connected. That is, the upper pad sleeve 2211, the middle pad sleeve 2212, and the lower pad sleeve 2213 are sequentially connected and cooperate to form the card slot 2214 along the direction in which the upper die 21 is inserted into the lower die 22. When it is necessary to install and disassemble the die sleeve 24, the lower pad sleeve 2213 or the upper pad sleeve 2211 can be removed so that a notch is formed at one end of the card slot 2214. Workers can take out the die sleeve 24 from the card slot 2214 through this notch or put the die sleeve 24 into the card slot 2214 through this notch. This reduces the difficulty of assembling and disassembling the die sleeve 24. Among them, the lower pad sleeve 2213 and the middle pad sleeve 2212 can be connected by means of snap connection, threaded fasteners, etc. Of course, in other embodiments, one of the lower pad sleeve 2213 and the upper pad sleeve 2211 is fixedly connected to the middle pad sleeve 2212, and the other is detachably connected to the middle pad sleeve 2212.

[0114] In some embodiments, the limiting structure 23 includes a first limiting post 231 and a plurality of second limiting posts 232. One end of the first limiting post 231 and the plurality of second limiting posts 232 is provided on the upper die 21, and the other end extends downward to the lower die 22 and extends into the hot pressing cavity 20a. The first limiting post 231 is used to be inserted into the central hole of the stator core laminations 70 and is used to press the end face of the winding post during the hot pressing process of the stator core laminations 70. A plurality of second limiting posts 232 are arranged around the circumference of the first limiting post 231. The second limiting posts 232 are used to be inserted into the tooth grooves of the stator core laminations 70 and are used to press the side faces of the winding posts during the hot pressing process of the stator core laminations 70.

[0115] Specifically, the stator core laminations 70 are inserted into the first limiting post 231 through the central hole, and the outer side surface of the first limiting post 231 is attached to the end face of the winding post. During the hot pressing process of the stator core laminations 70, the outer side surface of the first limiting post 231 is pressed against the end face of the winding post. In this way, the deformation of the end face of the winding post of the stator core laminations 70 can be prevented by the limitation of the first limiting post 231.

[0116] Adjacent two winding posts on the stator core laminations 70 are spaced apart to form tooth grooves. The number of the second limiting posts 232 is the same as the number of the tooth grooves. The stator core laminations 70 are inserted into the second limiting posts 232 through the tooth grooves. The outer side surface of the second limiting post 232 is attached to the side face of the winding post. During the hot pressing process of the stator core laminations 70, the outer side surface of the second limiting post 232 is pressed against the side face of the winding post. In this way, the deformation of the end face and the side face of the winding post can be prevented by the limitation of the first limiting post 231 and the plurality of second limiting posts 232. That is, the end face and the side face of the winding post of the stator core formed by hot pressing are relatively flat, which is beneficial to improving the yield rate of the hot pressing of the stator core.

[0117] In some embodiments, a first slot 2221 and a plurality of second slots 2222 are provided on the ejector pad sleeve 222. The other end of the first limiting post 231 is inserted into the first slot 2221, and the other ends of the plurality of second limiting posts 232 are respectively inserted into the plurality of second slots 2222.

[0118] Specifically, both the first slot 2221 and the second slot 2222 extend along the direction in which the upper die 21 is inserted into the lower die 22. The first limiting post 231 is inserted into the first slot 2221 and moves within the first slot 2221. The second limiting post 232 is inserted into the second slot 2222 and moves within the second slot 2222. During the hot pressing process, the first limiting post 231 and the second limiting post 232 gradually penetrate into the first slot 2221 and the second slot 2222 to ensure the hot pressing direction and improve the hot pressing accuracy.

[0119] In some embodiments, the upper die 21 includes a gland 212 and a stripper pad sleeve 213 that are stacked in sequence along the direction in which the upper die 21 is inserted into the lower die 22. The first limit post 231 and the second limit post 232 are fixed to the gland 212. The stripper pad sleeve 213 is provided with through holes for inserting the first limit post 231 and the second limit post 232. The stripper pad sleeve 213 can move along the length direction of the first limit post 231, and the stripper pad sleeve 213 forms the upper wall surface of the hot pressing cavity 20a.

[0120] It can be understood that the temperature of the stator core after hot pressing is relatively high. The stripper pad sleeve 213 is movably arranged. When it is necessary to remove the stator core after hot pressing from the first limit post 231 and the second limit post 232, the stripper pad sleeve 213 can be toggled to push the stator core to move through the stripper pad sleeve 213, so as to remove the stator core after hot pressing from the first limit post 231 and the second limit post 232. In this way, the staff's hand will not directly contact the stator core, and the staff's hand can be prevented from being scalded.

[0121] In some embodiments, a part of the upper die 21 is located outside the lower die 22, and a force application structure 211 is provided on the part of the upper die 21 located outside the lower die 22. The force application structure 211 is used for external force application when separating the upper die 21 and the lower die 22. Specifically, the force application structure 211 can be set as a convex block protruding from the upper die 21. The convex block can be held by the staff's hand or abutted by a tool. That is, when separating the upper die 21 and the lower die 22, the staff can grasp the convex block to separate the upper die 21 and the lower die 22, or can push the convex block by a tool to drive the separation of the upper die 21 and the lower die 22, so as to avoid the situation that when the user applies a pulling force, the upper die 21 cannot be pulled open due to the smooth surface of the upper die 21, and thus the upper die 21 and the lower die 22 cannot be separated.

[0122] Of course, the force application structure 211 can also be set as a groove recessed on the outer side surface of the upper die 21. That is, when separating the upper die 21 and the lower die 22, the staff can insert a tool into the groove and apply a pulling force to separate the upper die 21 and the lower die 22.

[0123] In this embodiment, the force application structure 211 is set as a groove. After the stator core laminations 70 are hot pressed and clamped, due to heating, the upper die 21 also has a certain temperature. Setting the force application structure 211 as a groove enables the staff to complete the separation of the upper die 21 and the lower die 22 through a tool when needed, without having to grasp with the hand, and can avoid the occurrence of scalding.

[0124] In addition, during the hot pressing process, the upper die 21 will continuously extend into the lower die 22. Setting the force application structure 211 as a groove can also avoid interference between the force application structure 211 and the lower die 22 when the upper die 21 extends into the lower die 22. Of course, in other embodiments, the upper die 21 may not be provided with the force application structure 211.

[0125] In some embodiments, force - applying structures 211 are provided on the outer sides of both the gland 212 and the knockout pad sleeve 213. That is, both the gland 212 and the knockout pad sleeve 213 are exposed outside the lower die 22. Workers can separate the upper die 21 and the lower die 22 through the force - applying structure 211 on the gland 212, or can also separate the upper die 21 and the lower die 22 through the force - applying structure 211 on the knockout pad sleeve 213. The gland 212 and the knockout pad sleeve 213 are stacked in sequence in the direction in which the upper die 21 is inserted into the lower die 22, that is, the knockout pad sleeve 213 is located below the gland 212. During the hot - pressing process, the upper die 21 will continuously insert into the lower die 22. By providing the force - applying structures 211 on both the gland 212 and the knockout pad sleeve 213 at the same time, when the knockout pad sleeve 213 extends into the lower die 22, workers can use tools to engage with the force - applying structure 211 on the gland 212 to separate the upper die 21 and the lower die 22, improving the operational convenience for workers. Of course, in other embodiments, the force - applying structure 211 is only provided on the gland 212.

[0126] The above - mentioned are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the inventive concept of the present invention, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A self-adhesive iron core integrated molding and curing equipment, characterized in that: include: A frame having at least one hot pressing station; A self-adhesive core tooling is replaceably arranged at the hot pressing station, the self-adhesive core tooling comprises an upper die and a lower die which are detachably matched and relatively movable, the upper die and the lower die cooperate to form a hot pressing cavity, and the hot pressing cavity is used to accommodate the stator core loose sheets; A pressurizing assembly, provided on the frame, for applying pressure to at least one of the upper die and the lower die, so that the upper die and the lower die cooperate to press the stator core fragments; A heating assembly, arranged on the frame, for heating the self-adhesive core tooling; as well as The control module is connected to the pressurizing component and the heating component, and is used to control the operation of the pressurizing component and the heating component according to set hot pressing parameters.

2. The self-adhesive core integrated molding and curing equipment according to claim 1, characterized in that: The heating assembly includes an outer mold and a heating coil, wherein: The outer mold is arranged at the hot pressing station, and the outer mold is enclosed to form a receiving cavity for receiving the self-adhesive core tooling. The outer mold is also provided with a first opening connected to the receiving cavity, and the first opening is used for the self-adhesive core tooling to enter and leave the receiving cavity; The heating coil is sleeved on the outside of the outer mold and is electrically connected to the control module. The heating coil is used to heat the self-adhesive iron core tooling.

3. The self-adhesive core integrated molding and curing equipment according to claim 2, characterized in that: The heating assembly further includes a heat insulation cover, which surrounds the outer side of the outer mold and is formed with a second opening communicating with the first opening.

4. The self-adhesive core integrated molding and curing equipment according to claim 2, characterized in that: The outer wall of the self-adhesive iron core tooling is provided with a first positioning structure; The heating component also includes a second positioning structure arranged on the side wall of the accommodating cavity, and the first positioning structure and the second positioning structure cooperate along the direction in which the self-adhesive iron core tooling enters the accommodating cavity to locate the position of the self-adhesive iron core tooling in the accommodating cavity.

5. The self-adhesive iron core integrated molding and curing equipment according to any one of claims 2 to 4, characterized in that: The self-adhesive core tooling is also provided with a temperature detection channel and a channel entrance connected to the temperature detection channel, the temperature detection channel is provided on the side cavity wall of the hot pressing cavity, and the channel entrance is formed on the surface of the self-adhesive core tooling; The heating component also includes a temperature sensor, which is electrically connected to the control module and partially extends into the temperature detection channel.

6. The self-adhesive core integrated molding and curing equipment according to claim 5, characterized in that: The pressurizing assembly includes a first driving member and a pressure head. The first driving member is arranged at one side of the hot pressing station and is electrically connected to the control module. The pressure head is driven by the first driving member and approaches or moves away from the hot pressing station under the drive of the first driving member.

7. The self-adhesive core integrated molding and curing equipment according to claim 6, characterized in that: The pressurizing component also includes a pressure sensor, one side of the pressure sensor is connected to the power output end of the second driving member, the other side of the pressure sensor is connected to the pressure head, and the pressure sensor is electrically connected to the control module.

8. The self-adhesive iron core integrated molding and curing equipment according to claim 6, characterized in that: The self-adhesive iron core integral molding and curing equipment also includes a material stripping component, which is arranged on the frame and electrically connected to the control module. The material stripping component is used to separate the upper mold from the lower mold.

9. The self-adhesive iron core integrated molding and curing equipment according to claim 1, characterized in that: The lower mold comprises a positioning sleeve and an ejection sleeve, the positioning sleeve is hollow, the upper mold is inserted into the lower mold and exposed from an opening at one end of the positioning sleeve, the ejection sleeve is arranged in the positioning sleeve, one end of the ejection sleeve abuts against the upper mold, and the other end is exposed from an opening at the other end of the positioning sleeve; The material stripping assembly includes a second driving member and an ejector member. The second driving member is installed on the other side of the hot pressing station. The ejector member is driven and connected to the second driving member and, driven by the second driving member, presses against the ejector sleeve to eject the upper mold from the lower mold.

10. The self-adhesive core integrated molding and curing equipment according to claim 1, characterized in that: The self-adhesive core tooling also includes a limiting structure and a mold sleeve, wherein: The limiting structure is at least partially arranged in the hot pressing cavity, and the limiting structure is used for inserting the stator core loose sheets and for pressing the inner side surfaces of the stator core loose sheets during the hot pressing process of the stator core loose sheets. The mold sleeve is at least partially arranged in the hot pressing chamber, and the mold sleeve is used to be sleeved on the outer surface of the stator core loose sheets, and is used to press the outer surface of the stator core loose sheets during the hot pressing process of the stator core loose sheets.

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