A housing stator hot sleeve apparatus

Abstract

The application provides a shell stator hot mounting device, and belongs to the technical field of motor hot mounting, and comprises: a base provided with a frame body; a shell moving assembly comprising a shell moving seat and a shell moving driving element; a heating assembly comprising a heating element and a heating lifting driving element; a stator moving assembly comprising a stator moving seat and a stator moving driving element; and a grabbing assembly comprising a grabbing element and a grabbing lifting driving element. In the application, the shell moving assembly can convey the shell to a heating position or a mounting position, the stator moving assembly can convey the stator to a feeding position or a taking position, and the grabbing assembly can be lifted through the mounting hole on the frame body, the stator can be grabbed from the taking position and pressed into the shell in the mounting position, the shell heating and the stator press fitting are integrated automatic operation, the safety risk caused by manual carrying of the high-temperature shell is avoided, the assembly precision and efficiency are improved, and the automatic continuous operation of the hot mounting process is realized.

Description

Technical Field

[0001] This invention belongs to the field of motor heat fitting technology, and relates to a heat fitting device for a stator housing. Background Technology

[0002] With the continuous development of mechatronic products such as motors, pumps, and compressors, the requirements for the assembly precision and automation of core components are increasing. Among them, the thermal fitting of the housing and stator is one of the key processes in motor manufacturing. This process utilizes the thermal expansion and contraction characteristics of metal materials to heat the motor housing to expand its inner diameter, and then press the stator in. After cooling, a tight interference fit is formed, thereby ensuring the structural stability, concentricity, and heat dissipation performance of the motor during operation.

[0003] Currently, traditional heat fitting of stator and outer casing mostly adopts manual or semi-automatic operation. The typical process includes: manually placing the outer casing into the heating furnace for heating, quickly transporting it to the pressing station after removal, manually aligning it with the stator, and pressing it in using a hydraulic press. However, there are many problems: for example, the separation of heating equipment and pressing equipment causes the temperature of the workpiece to drop during the transfer process, affecting the assembly quality, and even causing jamming or damage to the insulation; the high temperature outer casing is difficult to handle, which can easily cause burns to the operators, and the low alignment accuracy of manual operation can easily lead to eccentric pressing, affecting the performance of the motor, etc. Therefore, there is considerable room for improvement. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the prior art by proposing a heat-shrinking device for a stator housing.

[0005] The objective of this invention can be achieved through the following technical solution: a heat-shrinking device for a stator housing, comprising:

[0006] A base platform, including a heating position and an installation position, is provided with a frame, which is located above the base platform. The frame includes a feeding position and a picking position, with the picking position located above the installation position. The frame is provided with an installation hole, which penetrates the frame and corresponds to the area directly above the installation position.

[0007] A housing moving assembly includes a housing moving base and a housing moving drive element. The housing moving base is connected to the housing moving drive element, and the housing moving drive element is connected to the base. The housing moving drive element can drive the housing moving base to move to the heating position or the installation position.

[0008] A heating assembly is connected to the base. The heating assembly includes a heating element and a heating lifting drive element. The heating element is connected to the heating lifting drive element. When the housing moving seat is in the heating position, the heating lifting drive element can drive the heating element to rise and fall to heat the housing on the housing moving seat.

[0009] A stator moving assembly includes a stator moving base and a stator moving drive element. The stator moving base is connected to the stator moving drive element, and the stator moving drive element is connected to the frame. The stator moving drive element can drive the stator moving base to the loading position or the unloading position.

[0010] The gripping assembly includes a gripping element and a gripping lifting drive element. The gripping element is connected to the gripping lifting drive element, which is connected to the base. The gripping element is used to grip the stator, and the gripping lifting drive element can drive the gripping element to pass through the mounting hole and rise to the material picking position or descend to the mounting position.

[0011] In the aforementioned heat-shrinking device for a stator housing, the gripping element includes a deformation column and a spreading drive element. The deformation column is connected to the gripping lifting drive element, and the spreading drive element is connected to the deformation column. The deformation column is provided with a deformation part, and the spreading drive element is provided with a spreading block. The spreading drive element can drive the spreading block to contact the deformation part and push the deformation part to expand radially.

[0012] In the aforementioned heat-shrinking device for a stator housing, the deformation section includes at least two deformation plates, each of which is connected to the deformation column and is centrally distributed around the fixed column, with a deformation gap formed between adjacent deformation plates.

[0013] In the aforementioned heat-shrinking device for a stator housing, the deformable sheet is an elastic sheet.

[0014] In the aforementioned heat-shrinking device for a stator housing, the expansion block is provided with an expansion ramp, and the expansion driving element can drive the expansion block to contact the deformed part through the expansion ramp and push the deformed part to expand radially.

[0015] In the aforementioned shell stator heat-shrinking device, a cooling assembly is further included. The shell movable seat is provided with a receiving cavity, a cooling tank, and a first cooling channel. The cooling tank is located on the side of the receiving cavity and communicates with the receiving cavity. One end of the first cooling channel is disposed on the side surface of the shell movable seat, and the other end of the first cooling channel communicates with the cooling tank. The cooling assembly includes a cooling movable seat, a cooling moving drive element, and a water inlet connector. The cooling movable seat is connected to the cooling moving drive element, and the cooling moving drive element is connected to the base. The water inlet connector is connected to the cooling movable seat. The cooling movable seat is provided with a second cooling channel and a water inlet channel. One end of the water inlet channel communicates with the second cooling channel, and the other end of the water inlet channel is connected to the water inlet connector. When the shell movable seat is in the cooling position, the cooling moving drive element can drive the cooling movable seat to move until the cooling movable seat contacts the shell movable seat and one end of the second cooling channel communicates with the first cooling channel.

[0016] In the aforementioned heat-shrinking device for a stator housing, the cooling assembly further includes a water receiving element connected to the cooling movable seat. The water receiving element is provided with a water receiving groove. When the cooling movable seat contacts the housing movable seat and one end of the second cooling channel communicates with the first cooling channel, the water receiving element is located below the housing movable seat and the water receiving groove is located below one end of the cooling groove near the bottom surface of the housing movable seat. The cooling assembly also includes a return water connector, and the water receiving element is further provided with a return water channel. One end of the return water channel communicates with the water receiving groove, and the other end of the return water channel is connected to the return water connector.

[0017] In the aforementioned heat-shrinking device for a stator housing, the cooling assembly further includes an air inlet connector, which is connected to the cooling movable seat. The cooling movable seat is provided with an air inlet channel, one end of which is connected to the second cooling channel, and the other end of which is connected to the air inlet connector. The connection point between the air inlet channel and the second cooling channel is located at one end of the second cooling channel, and the connection point between the water inlet channel and the second cooling channel is located in the middle of the second cooling channel.

[0018] In the aforementioned heat-shrinking device for a housing stator, the housing moving seat is further provided with a pressure plate, an elastic element, and a contact pin. The middle part of the pressure plate is rotatably connected to the housing moving seat. The two ends of the elastic element are in contact with the housing moving seat and the contact pin, respectively. The contact pin is in contact with one end of the pressure plate, and the other end of the pressure plate is used to press the housing.

[0019] In the aforementioned housing stator heat fitting device, a detachment component is also included. The base also includes a feeding position. The product movement drive element can drive the housing moving seat to move to the feeding position. When the housing moving seat is located at the feeding position, the detachment component contacts the pressure plate and pushes the pressure plate and the contact pin to squeeze the elastic element.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: the housing moving assembly can transport the housing to the heating position or the installation position, the stator moving assembly can transport the stator to the loading position or the unloading position, and the gripping assembly can be lifted and lowered through the mounting hole on the frame to grip the stator from the unloading position and press it into the housing at the installation position, realizing the integrated automatic operation of housing heating and stator pressing. This structure avoids the safety risks caused by manual handling of high-temperature housings, improves assembly accuracy and efficiency, and realizes the automated continuous operation of the heat fitting process; the gripping element adopts a combination structure of deformation column and expansion drive element. The expansion drive element pushes the expansion block to act on the deformation part, causing the deformation column to expand radially, thereby tightly adhering to the inner hole of the stator to achieve reliable clamping. This inner hole expansion gripping method distributes force evenly and avoids damage to the stator winding; the deformation part is composed of multiple deformation plates distributed around the center of the positioning column. The gripping element is designed with a deformation gap between adjacent deformation plates, allowing each plate to expand outward synchronously and uniformly under the spreading action. This prevents uneven loading or jamming due to uneven force distribution, ensuring stable and reliable clamping. The deformation gap also provides space for material deformation, reducing stress concentration and extending the service life of the gripping element. The deformation plates themselves have elastic recovery capabilities. When the spreading drive element removes its thrust, the deformation plates can automatically return to their original contracted state based on material elasticity, thereby releasing the clamping force on the stator inner hole without the need for additional return springs or drive mechanisms. This simplifies the gripping element structure and enables automatic clamping and release cycles. The spreading block contacts the deformation part through a spreading inclined surface, converting the axial thrust of the spreading drive element into radial expansion force, achieving a smooth and gradual spreading action. The inclined surface structure transmits force smoothly, reducing impact and friction, and lowering the risk of damage to the deformation plates. Attached Figure Description

[0021] Figure 1 This is a schematic diagram showing the housing movable seat of the present invention in the heated position.

[0022] Figure 2 This is a schematic diagram showing the housing movable base of the present invention in the installation position.

[0023] Figure 3 This is a schematic diagram of the housing movable seat of the present invention in the cooling position.

[0024] Figure 4 This is a schematic diagram showing the housing moving seat of the present invention in the unloading position.

[0025] Figure 5 This is a cross-sectional view of the heating assembly of the present invention.

[0026] Figure 6 for Figure 5 An enlarged view of part A.

[0027] Figure 7 This is a top view of the housing movable seat of the present invention.

[0028] Figure 8 for Figure 7 A cross-sectional view from the perspective of a BB (Black and White) camera.

[0029] Figure 9 This is a schematic diagram of the cooling movable base and water receiving element of the present invention.

[0030] Figure 10 This is a top view of the cooling movable base and water receiving element of the present invention.

[0031] Figure 11 for Figure 10 A cross-sectional view from the CC perspective.

[0032] In the figure, 100 is the base; 110 is the frame; 111 is the mounting hole; 200 is the housing moving assembly; 210 is the housing moving seat; 211 is the receiving cavity; 212 is the cooling tank; 213 is the first cooling channel; 220 is the housing moving drive element; 230 is the pressure plate; 240 is the elastic element; 250 is the contact pin; 300 is the heating assembly; 310 is the heating element; 320 is the heating lifting drive element; 400 is the stator moving assembly; 410 is the stator moving seat; 420 is the stator moving drive element; 500 is the gripping assembly; 51 is the... 0. Gripping element; 511. Deformation column; 512. Deformation plate; 513. Spreading drive element; 514. Spreading block; 515. Spreading ramp; 520. Gripping lifting drive element; 600. Cooling assembly; 610. Cooling moving seat; 611. Second cooling channel; 612. Water inlet channel; 613. Air inlet channel; 620. Cooling moving drive element; 630. Water inlet connector; 640. Water receiving element; 641. Water receiving tank; 642. Water return channel; 650. Water return connector; 660. Air inlet connector; 700. Disengagement component. Detailed Implementation

[0033] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0034] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0035] Furthermore, in this invention, descriptions involving terms such as "first," "second," and "a" are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0037] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0038] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

[0039] like Figures 1-11 As shown, a shell and stator heat fitting device includes: a base 100, a shell moving assembly 200, a heating assembly 300, a stator moving assembly 400, and a gripping assembly 500.

[0040] The base 100 includes a heating position and an installation position. The base 100 is provided with a frame 110, which is located above the base 100. The frame 110 includes a feeding position and a picking position, with the picking position located above the installation position. The frame 110 is provided with a mounting hole 111, which penetrates the frame 110 and corresponds to the position directly above the installation position.

[0041] The housing moving assembly 200 includes a housing moving base 210 and a housing moving drive element 220. The housing moving base 210 is connected to the housing moving drive element 220, and the housing moving drive element 220 is connected to the base 100. The housing moving drive element 220 can drive the housing moving base 210 to move to the heating position or the installation position.

[0042] Specifically, the housing movement drive element 220 can be a pneumatic cylinder, an electric cylinder, a hydraulic cylinder, or other linear drive element.

[0043] The heating assembly 300 is connected to the base 100. The heating assembly 300 includes a heating element 310 and a heating lifting drive element 320. The heating element 310 is connected to the heating lifting drive element 320. When the housing moving seat 210 is in the heating position, the heating lifting drive element 320 can drive the heating element 310 to rise and fall and heat the housing on the housing moving seat 210.

[0044] Specifically, the heating and lifting drive element 320 can be a pneumatic cylinder, an electric cylinder, a hydraulic cylinder, or other linear drive elements.

[0045] The stator moving assembly 400 includes a stator moving base 410 and a stator moving drive element 420. The stator moving base 410 is connected to the stator moving drive element 420, and the stator moving drive element 420 is connected to the frame 110. The stator moving drive element 420 can drive the stator moving base 410 to move to the loading position or the unloading position.

[0046] The gripping assembly 500 includes a gripping element 510 and a gripping lifting drive element 520. The gripping element 510 is connected to the gripping lifting drive element 520, and the gripping lifting drive element 520 is connected to the base 100. The gripping element 510 is used to grip the stator, and the gripping lifting drive element 520 can drive the gripping element 510 through the mounting hole 111 and rise to the material picking position or fall to the mounting position.

[0047] Specifically, the gripping and lifting drive element 520 can be a pneumatic cylinder, an electric cylinder, a hydraulic cylinder, or other linear drive elements.

[0048] In this embodiment, the housing moving assembly 200 can transport the housing to the heating position or the installation position, the stator moving assembly 400 can transport the stator to the loading position or the unloading position, and the gripping assembly 500 can be lifted and lowered through the mounting hole 111 on the frame 110 to grip the stator from the unloading position and press it into the housing at the installation position. This realizes the integrated automatic operation of housing heating and stator pressing. This structure avoids the safety risks caused by manual handling of high-temperature housing, improves assembly accuracy and efficiency, and realizes the automated continuous operation of the heat fitting process.

[0049] like Figures 1-11 As shown, based on the above embodiments, in the above-mentioned shell stator heat fitting device, the gripping element 510 includes a deformation column 511 and a spreading drive element 513. The deformation column 511 is connected to the gripping lifting drive element 520, and the spreading drive element 513 is connected to the deformation column 511. The deformation column 511 is provided with a deformation part, and the spreading drive element 513 is provided with a spreading block 514. The spreading drive element 513 can drive the spreading block 514 to contact the deformation part and push the deformation part to expand radially.

[0050] In this embodiment, the gripping element 510 adopts a combination structure of deformation column 511 and expansion drive element 513. The expansion drive element 513 pushes the expansion block 514 to act on the deformation part, causing the deformation column 511 to expand radially, thereby tightly adhering to the inner hole of the stator to achieve reliable clamping. This inner hole expansion gripping method distributes force evenly and avoids damage to the stator winding.

[0051] like Figures 1-11 As shown, based on the above embodiment, the deformable part includes at least two deformable pieces 512, each of the deformable pieces 512 is connected to the deformable column 511 and is centrally distributed around the fixed column, and a deformable gap is formed between two adjacent deformable pieces 512.

[0052] In this embodiment, the deformation part is composed of multiple deformation pieces 512 distributed around the center of the positioning post, and a deformation gap is provided between adjacent deformation pieces 512 so that each deformation piece 512 can expand outward synchronously and uniformly under the expansion action, avoiding uneven load or jamming due to uneven force, making the clamping stable and reliable. At the same time, the deformation gap provides space for material deformation, reduces stress concentration, and extends the service life of the gripping element 510.

[0053] like Figures 1-11 As shown, based on the above embodiment, the deformable sheet 512 is an elastic sheet.

[0054] Specifically, the deformation plate 512 can be a resettable structure made of elastic materials such as spring steel.

[0055] In this embodiment, the deformation sheet 512 itself has the ability to elastically reset. When the driving element 513 is opened and the thrust is removed, the deformation sheet 512 can automatically return to its original contracted state by relying on the elasticity of the material, thereby releasing the clamping force on the inner hole of the stator without the need for an additional reset spring or driving mechanism. This simplifies the structure of the gripping element 510 and realizes the automatic cycle of clamping and releasing.

[0056] like Figures 1-11 As shown, based on the above embodiment, the spreading block 514 is provided with a spreading inclined surface 515, and the spreading driving element 513 can drive the spreading block 514 to contact the deformed part through the spreading inclined surface 515 and push the deformed part to expand radially.

[0057] In this embodiment, the spreading block 514 contacts the deformable part through the spreading inclined surface 515, converting the axial thrust of the spreading drive element 513 into radial expansion force, thereby achieving a smooth and gradual spreading action. The inclined surface structure transmits force smoothly, reducing impact and friction, and lowering the risk of damage to the deformable sheet 512.

[0058] like Figures 1-11 As shown, based on the above embodiment, a cooling assembly 600 is also included. The housing movable base 210 is provided with a receiving cavity 211, a cooling groove 212, and a first cooling channel 213. The cooling groove 212 is located on the side of the receiving cavity 211 and communicates with the receiving cavity 211. One end of the first cooling channel 213 is disposed on the side surface of the housing movable base 210, and the other end of the first cooling channel 213 communicates with the cooling groove 212. The cooling assembly 600 includes a cooling movable base 610, a cooling movable drive element 620, and a water inlet connector 630. The cooling movable base 610 is connected to the cooling movable drive element 620. The drive element 620 is connected to the base 100, and the water inlet connector 630 is connected to the cooling movable seat 610. The cooling movable seat 610 is provided with a second cooling channel 611 and a water inlet channel 612. One end of the water inlet channel 612 is connected to the second cooling channel 611, and the other end of the water inlet channel 612 is connected to the water inlet connector 630. When the housing movable seat 210 is in the cooling position, the cooling movable drive element 620 can drive the cooling movable seat 610 to move until the cooling movable seat 610 contacts the housing movable seat 210 and one end of the second cooling channel 611 is connected to the first cooling channel 213.

[0059] Specifically, the cooling moving drive element 620 can be a pneumatic cylinder, an electric cylinder, a hydraulic cylinder, or other linear drive element.

[0060] In this embodiment, the cooling assembly 600 docks with the housing moving seat 210 via the cooling moving seat 610, so that the second cooling channel 611 is connected to the first cooling channel 213, thereby realizing the directional delivery of coolant to the housing. The coolant is cooled around the side of the housing via the cooling tank 212, which accelerates the cooling speed of the housing after heat fitting, realizes continuous operation of heating-press fitting-cooling, and improves the overall level of automation.

[0061] like Figures 1-11 As shown, based on the above embodiment, the cooling assembly 600 further includes a water receiving element 640, which is connected to the cooling movable seat 610. The water receiving element 640 is provided with a water receiving groove 641. When the cooling movable seat 610 contacts the housing movable seat 210 and one end of the second cooling channel 611 is connected to the first cooling channel 213, the water receiving element 640 is located below the housing movable seat 210 and the water receiving groove 641 is located below the end of the cooling groove 212 near the bottom surface of the housing movable seat 210. The cooling assembly 600 also includes a water return connector 650. The water receiving element 640 is also provided with a water return channel 642, one end of which is connected to the water receiving groove 641, and the other end of which is connected to the water return connector 650.

[0062] In this embodiment, the water receiving tank 641 of the water receiving element 640 is located below the cooling tank 212, which can effectively collect the coolant discharged from the shell, ensure that the high-temperature cooling water is discharged in an orderly manner, and prevent it from remaining on the surface of the product or the fixed bracket. This not only protects the equipment from being clean, but also prevents hot water from flowing back or dripping and causing secondary heating or temperature difference shock. The return water channel 642 leads the collected coolant to the return water connector 650, realizing the centralized recycling of coolant.

[0063] like Figures 1-11 As shown, based on the above embodiment, the cooling assembly 600 further includes an air inlet connector 660, which is connected to the cooling movable seat 610. The cooling movable seat 610 is provided with an air inlet channel 613, one end of which is connected to the second cooling channel 611, and the other end of which is connected to the air inlet connector 660. The connection point between the air inlet channel 613 and the second cooling channel 611 is located at one end of the second cooling channel 611, and the connection point between the water inlet channel 612 and the second cooling channel 611 is located in the middle of the second cooling channel 611.

[0064] In this embodiment, after water cooling is completed, compressed gas is introduced for purging. On the one hand, this removes residual moisture in the cooling channel to prevent water from corroding the motor housing or affecting subsequent assembly. On the other hand, the airflow itself has a cooling effect, which can perform secondary air cooling on the outer surface that is still at a high temperature, further reducing the product temperature to a safe range. This achieves a "water cooling + air cooling" composite cooling mode, which significantly improves the overall cooling efficiency and thoroughness.

[0065] like Figures 1-11 As shown, based on the above embodiment, the housing moving seat 210 is further provided with a pressure plate 230, an elastic element 240 and a contact pin 250. The middle part of the pressure plate 230 is rotatably connected to the housing moving seat 210. The two ends of the elastic element 240 are in contact with the housing moving seat 210 and the contact pin 250 respectively. The contact pin 250 is in contact with one end of the pressure plate 230, and the other end of the pressure plate 230 is used to press the housing.

[0066] In this embodiment, the pressure plate 230 on the housing moving seat 210 automatically presses the product under the action of the elastic member 240 and the contact pin 250. The elastic member 240 pushes the pressure plate 230 to rotate through the contact pin 250 to press the product, ensuring that its position is fixed and tightly fitted during the cooling process, and avoiding poor cooling due to vibration or thermal deformation.

[0067] like Figures 1-11 As shown, based on the above embodiment, it also includes a detachment member 700, and the base 100 also includes a feeding position. The product moving drive element can drive the housing moving seat 210 to move to the feeding position. When the housing moving seat 210 is located at the feeding position, the detachment member 700 contacts the pressure plate 230 and pushes the pressure plate 230 and the contact pin 250 to squeeze the elastic member 240.

[0068] In this embodiment, when the housing moving seat 210 moves to the unloading position, the detachment member 700 contacts the pressure plate 230 and pushes it to rotate, compressing the elastic member 240, thereby releasing the pressure on the housing and realizing the automatic release of the pressure mechanism without manual intervention, which facilitates the subsequent removal of the heat-fitted workpiece by a robot or by a person.

[0069] like Figures 1-11 As shown, the overall working principle is as follows:

[0070] The operator or automatic feeding mechanism places the housing to be assembled into the receiving cavity 211 of the housing moving seat 210. Subsequently, the housing moving drive element 220 is activated, driving the housing moving seat 210 to move from the initial position to the heating position. At this time, the heating lifting drive element 320 drives the heating element 310 and heats the housing on the housing moving seat 210, causing its inner diameter to expand due to heat, creating interference fit conditions for the subsequent stator pressing.

[0071] While the housing is being heated, another station prepares the stator. The operator or the automatic feeding device places the stator on the stator moving seat 410, which is in the loading position. Then, the stator moving drive element 420 drives the stator moving seat 410 to move from the loading position to the unloading position, which is directly above the installation position, to ensure the alignment accuracy of the subsequent gripping action.

[0072] When the stator moves to the material picking position, the gripping lifting drive element 520 drives the gripping element 510 to rise, so that it enters the material picking position and is ready to grip the stator. The spreading drive element 513 is activated, pushing the spreading block 514 on it to apply axial pressure to the deformation part along the spreading inclined surface 515, so that the deformation plate 512 of the deformation column 511 is radially expanded. The expanded deformation plate 512 is tightly attached to the inner wall of the stator, so as to achieve reliable clamping.

[0073] After the stator is gripped, the gripping lifting drive element 520 drives the gripping element 510 and the stator as a whole to descend, pass through the mounting hole 111 on the frame 110, and enter the installation position. At this time, the housing moving drive element 220 has moved the heated housing from the heating position to the installation position and aligned it with the stator coaxially. The gripping element 510 continues to descend and smoothly presses the stator into the housing, completing the thermal assembly.

[0074] During the pressing process, the pressure plate 230 on the housing moving seat 210 presses the housing at one end under the action of the elastic element 240 and the contact pin 250 to prevent it from shifting under the pressing force; the middle part of the pressure plate 230 is rotatably connected to form a floating pressing structure, which can adapt to the height tolerance of the housing, ensure reliable pressing and not damage the housing.

[0075] After the heat fitting is completed, the housing movement drive element 220 moves the housing movement seat 210 from the installation position to the cooling position. At the same time, the cooling movement drive element 620 drives the cooling movement seat 610 to approach the housing movement seat 210, so that the second cooling channel 611 on the cooling movement seat 610 is connected to the first cooling channel 213 on the housing movement seat 210. External cooling water enters the water inlet channel 612 through the water inlet connector 630, flows into the second cooling channel 611, and then enters the cooling tank 212 on the side of the housing movement seat 210 through the first cooling channel 213 to cool the housing, accelerate its cooling and shrinkage, and complete the interference fit shaping. After the coolant is discharged from the bottom of the cooling tank 212, it is collected by the water receiving tank 641 of the water receiving element 640 located below, and is led out to the water return connector 650 through the water return channel 642 to realize the recovery of coolant.

[0076] After the water cooling stage is completed, the system switches to air cooling mode. Compressed gas enters the air intake channel 613 through the air intake connector 660 and is injected from one end of the second cooling channel 611. Since the water inlet channel 612 is connected to the middle of the second cooling channel 611, after the gas enters from the end, it can continue to push the water remaining in the second cooling channel 611 to participate in air cooling, so as to achieve mixed gas-liquid cooling.

[0077] Meanwhile, the high-speed airflow continues to absorb the residual heat of the outer shell during its flow, performing secondary air cooling to further reduce the product temperature to a safe range and ensure thorough cooling. This composite cooling mode of "water cooling first, then air cooling" improves cooling efficiency.

[0078] After cooling is complete, the housing moving drive element 220 moves the housing moving seat 210 to the unloading position. At this time, the detachment member 700 fixed to the base 100 contacts one end of the pressure plate 230, pushing the pressure plate 230 to rotate around its middle part, thereby compressing the contact pin 250 and the elastic member 240, and releasing the clamping force on the housing.

[0079] Subsequently, the gripping element 510 rises and resets, the stator disengages from the gripping element 510, the deformation sheet 512 self-resets and retracts, and the motor assembly that has completed the heat fitting can be removed by a robotic arm or manually, completing one work cycle.

Claims

1. A heat-shrinking device for a stator housing, characterized in that, include: A base platform, including a heating position and an installation position, is provided with a frame, which is located above the base platform. The frame includes a feeding position and a picking position, with the picking position located above the installation position. The frame is provided with an installation hole, which penetrates the frame and corresponds to the area directly above the installation position. A housing moving assembly includes a housing moving base and a housing moving drive element. The housing moving base is connected to the housing moving drive element, and the housing moving drive element is connected to the base. The housing moving drive element can drive the housing moving base to move to the heating position or the installation position. A heating assembly is connected to the base. The heating assembly includes a heating element and a heating lifting drive element. The heating element is connected to the heating lifting drive element. When the housing moving seat is in the heating position, the heating lifting drive element can drive the heating element to rise and fall to heat the housing on the housing moving seat. A stator moving assembly includes a stator moving base and a stator moving drive element. The stator moving base is connected to the stator moving drive element, and the stator moving drive element is connected to the frame. The stator moving drive element can drive the stator moving base to the loading position or the unloading position. A gripping assembly includes a gripping element and a gripping lifting drive element. The gripping element is connected to the gripping lifting drive element, which is connected to the base. The gripping element is used to grip the stator, and the gripping lifting drive element can drive the gripping element to pass through the mounting hole and rise to the material picking position or fall to the mounting position. The gripping element includes a deformation column and a spreading drive element. The deformation column is connected to the gripping lifting drive element, and the spreading drive element is connected to the deformation column. The deformation column is provided with a deformation part, and the spreading drive element is provided with a spreading block. The spreading drive element can drive the spreading block to contact the deformation part and push the deformation part to expand radially. The expanding block is provided with an expanding inclined surface, and the expanding driving element can drive the expanding block to contact the deformable part through the expanding inclined surface and push the deformable part to expand radially.

2. The shell stator heat fitting device as described in claim 1, characterized in that: The deformable part includes at least two deformable plates, each of which is connected to the deformable column and is centrally distributed around the deformable column, with a deformable gap formed between adjacent two deformable plates.

3. The shell stator heat fitting device as described in claim 2, characterized in that: The deformable sheet is an elastic sheet.

4. The shell stator heat fitting device as described in claim 1, characterized in that: It also includes a cooling assembly. The housing movable seat is provided with a receiving cavity, a cooling tank, and a first cooling channel. The cooling tank is located on the side of the receiving cavity and communicates with the receiving cavity. One end of the first cooling channel is provided on the side surface of the housing movable seat, and the other end of the first cooling channel communicates with the cooling tank. The cooling assembly includes a cooling movable seat, a cooling moving drive element, and a water inlet connector. The cooling movable seat is connected to the cooling moving drive element, the cooling moving drive element is connected to the base, and the water inlet connector is connected to the cooling movable seat. The cooling movable seat is provided with a second cooling channel and a water inlet channel. One end of the water inlet channel communicates with the second cooling channel, and the other end of the water inlet channel is connected to the water inlet connector. When the housing movable seat is in the cooling position, the cooling moving drive element can drive the cooling movable seat to move until the cooling movable seat contacts the housing movable seat and one end of the second cooling channel communicates with the first cooling channel.

5. The shell stator heat fitting device as described in claim 4, characterized in that: The cooling assembly further includes a water receiving element connected to the cooling movable seat. The water receiving element is provided with a water receiving groove. When the cooling movable seat contacts the housing movable seat and one end of the second cooling channel communicates with the first cooling channel, the water receiving element is located below the housing movable seat and the water receiving groove is located below one end of the cooling groove near the bottom surface of the housing movable seat. The cooling assembly also includes a water return connector. The water receiving element is also provided with a water return channel. One end of the water return channel communicates with the water receiving groove, and the other end of the water return channel is connected to the water return connector.

6. The shell stator heat fitting device as described in claim 4, characterized in that: The cooling assembly also includes an air inlet connector connected to the cooling movable seat. The cooling movable seat is provided with an air inlet channel, one end of which is connected to the second cooling channel, and the other end of which is connected to the air inlet connector. The connection point between the air inlet channel and the second cooling channel is located at one end of the second cooling channel, and the connection point between the water inlet channel and the second cooling channel is located in the middle of the second cooling channel.

7. The stator heat-shrinking device as described in claim 1, characterized in that: The housing movable seat is also provided with a pressure plate, an elastic element and a contact pin. The middle part of the pressure plate is rotatably connected to the housing movable seat. The two ends of the elastic element are in contact with the housing movable seat and the contact pin respectively. The contact pin is in contact with one end of the pressure plate and the other end of the pressure plate is used to press the housing.

8. The shell stator heat fitting device as described in claim 7, characterized in that: It also includes a release element, and the base also includes a feeding position. The housing moving drive element can drive the housing moving seat to move to the feeding position. When the housing moving seat is located at the feeding position, the release element contacts the pressure plate and pushes the pressure plate and the contact pin to squeeze the elastic element.

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