Pump assembling equipment and pump assembling method

Abstract

According to the pump assembling equipment and the pump assembling method, the assembling steps can be simplified, the assembling efficiency is improved, and high-temperature transfer is not needed. The pump assembling equipment comprises a heating device, a press-fitting mold and a driving assembly, the press-fitting mold comprises a press-fitting mechanism, a pump shell base and a stator base, the pump shell base and the stator base are arranged on the press-fitting mechanism, and the pump shell base is located above the stator base; the driving assembly comprises a power part and a force transmission part, and the power part can drive the pump shell base to move through the force transmission part so as to drive the pump shell base to move towards the heating device; the power part can further drive the stator base to move towards the pump shell base.

Description

Technical Field

[0001] This invention relates to the field of pump assembly technology, and more specifically to a pump assembly device and a pump assembly method. Background Technology

[0002] A pump generally consists of a pump housing assembly and a stator assembled within the housing assembly. The stator is typically press-fitted into the inner cavity of the housing assembly. In related assembly techniques, the pump housing assembly is first heated to induce thermal expansion. Then, the stator is press-fitted into the housing assembly. After cooling, based on the principle of thermal contraction, the stator will be reliably assembled within the housing assembly. The heating process is generally performed in an oven, followed by press-fitting on a press-fitting fixture. This assembly process is cumbersome, inefficient, and requires sophisticated handling equipment and installation procedures for transporting the high-temperature pump housing assembly. Summary of the Invention

[0003] The purpose of this application is to provide a pump assembly device and a pump assembly method that can simplify assembly steps, improve assembly efficiency, and eliminate the need for high-temperature transfer.

[0004] The pump assembly equipment provided in this application includes a heating device, a pressing mold, and a drive assembly. The pressing mold includes a pressing mechanism and a pump housing seat and a stator seat installed on the pressing mechanism. The pump housing seat is located above the stator seat.

[0005] The drive assembly includes a power unit and a force transmission unit. The power unit can drive the pump housing to move through the force transmission unit, thereby moving the pump housing towards the heating device. The power unit can also drive the stator base to move towards the pump housing.

[0006] The drive assembly in this application includes a power unit and a force transmission unit. The power unit drives the pressing mechanism to move through the force transmission unit, thereby moving the pump housing seat towards the heating device to heat the pump housing assembly on the pump housing seat. After heating, the power unit continues to push upwards. The force transmission unit eliminates the transmission effect between the power unit and the pressing mechanism, allowing the power unit to independently drive the stator located on the stator seat towards the pump housing assembly on the pump housing seat, thereby independently moving and pressing the stator towards the pump housing assembly. In this way, the pump assembly equipment can complete the heating and pressing of the pump housing assembly in one station, simplifying the assembly process, improving assembly efficiency, and eliminating the need for high-temperature transfer. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the pump assembly equipment in the embodiments of this application;

[0008] Figure 2 for Figure 1 A diagram from another perspective;

[0009] Figure 3 for Figure 1 Schematic diagram of the structure of the intermediate pressure fitting mold;

[0010] Figure 4 for Figure 3 A cross-sectional view of the intermediate pressure fitting mold along its height.

[0011] Figure 5 for Figure 3 A schematic diagram of the pressing mechanism of the intermediate pressing mold;

[0012] Figure 6 for Figure 5 Another structural diagram from another perspective;

[0013] Figure 7 for Figure 1 A schematic diagram of the structure of the drive component;

[0014] Figure 8 for Figure 7 A cross-sectional view of the drive component along the height direction;

[0015] Figure 9 for Figure 1 Assembly diagram of the drive assembly and pressing mechanism;

[0016] Figure 10 From Figure 9 A schematic diagram of the drive component viewed from the bottom of the central frame;

[0017] Figure 11 for Figure 1 A schematic diagram of the heating element installed on the mounting frame;

[0018] Figure 12 for Figure 1 A structural schematic diagram of the heating device, mounting frame, and pressing mechanism;

[0019] Figure 13 This is a schematic diagram of the pump assembly equipment in the first position state in an embodiment of this application;

[0020] Figure 14 This is a schematic diagram of the pump assembly equipment in the second position state in an embodiment of this application;

[0021] Figure 15 This is a schematic diagram of the pump assembly equipment in the third position state in an embodiment of this application, showing the pump at this time;

[0022] Figure 16 This is a schematic diagram of the pump assembly equipment in the fourth position state in an embodiment of this application.

[0023] The reference numerals in the above figures are explained as follows:

[0024] 10-Heating device; 101-Drive component; 102-Heating element;

[0025] 20-Pressure fitting mold; 20'-Pressure fitting mechanism; 201-Top support plate; 201a-Second through hole; 202-First base plate; 202a-First through hole; 203-Lifting rod; 204-First mounting plate; 204a-First mounting hole; 205-Pump housing seat; 206-Second mounting plate; 206a-Second mounting hole; 206b-Guide hole; 207-Stator seat; 208-Reset spring; 209-Guide rod; 210-Sliding sleeve; 211-Support rod; 212-Connecting rod; 213-Slide plate; 214-Sliding sleeve;

[0026] 30-Drive assembly; 301-Push plate; 301a-Fourth through hole; 302-Power unit; 3021-Servo press; 30211-Drive end; 303-Push rod; 304-Fixing rod; 305-Force transmission unit; 3051-Cylinder; 30511-Cylinder barrel; 30512-Cylinder rod; 306-Limit ring; 307-Force transmission plate; 308-Second base plate; 309-Guide column;

[0027] 40-Mounting bracket; 401-Frame body; 402-Pressure support;

[0028] 50 - Base frame; 50a - Third through hole;

[0029] 60-turntable;

[0030] 001-Pump housing assembly; 002-Stator. Detailed Implementation

[0031] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the pump assembly equipment in the embodiments of this application; Figure 2 for Figure 1 A diagram from another perspective.

[0033] The pump assembly equipment in this embodiment is used to assemble a pump, such as an oil pump. The pump includes a pump housing assembly 001 and a stator 002 located within the pump housing assembly 001. The pump housing assembly 001 can be an integral structure, or it can be a component consisting of a pump housing, a pump cover, an electronic stator, inner and outer rotors, etc., or it may not include a pump cover. The pump assembly equipment is used to assemble the stator 002 into the pump housing assembly 001. The assembly method is to first heat the pump housing assembly 001, then press the stator 002 into the pump housing assembly 001, and cool it after pressing. This reliably assembles the pump housing assembly 001 and the stator 002 together.

[0034] The pump assembly equipment includes a heating device 10, a pressing mold 20, and a drive assembly 30. The equipment also includes a base frame 50, which serves as the foundation for the entire device. The drive assembly 30 and the heating device 10 are both mounted on the base frame 50. Figure 1 As shown, the drive assembly 30 is located below the base frame 50, the heating device 10 is located above the base frame 50, the pump housing assembly 001 and the stator 002 are both mounted on the pressing mold 20, and the drive assembly 30 can drive the pressing mold 20 to move upward so that the pump housing assembly 001 on the pressing mold 20 moves toward the heating device 10.

[0035] The following describes the three parts of the pump assembly equipment in sequence: the press mold 20, the drive assembly 30, and the heating device 10.

[0036] You can continue to refer to this. Figure 3-6 As shown, Figure 3 for Figure 1 Schematic diagram of the structure of the intermediate pressure mold 20; Figure 4 for Figure 3 A cross-sectional view of the intermediate pressure mold 20 along its height. Figure 5 for Figure 3 A schematic diagram of the pressing mechanism 20' of the intermediate pressing mold 20; Figure 6 for Figure 5 A structural diagram from another perspective.

[0037] The press-fit mold 20 includes a pump housing seat 205, a stator seat 207, and a press-fit mechanism 20'. Both the pump housing seat 205 and the stator seat 207 are mounted on the press-fit mechanism 20'. The pump housing seat 205 is used to mount the pump housing assembly 001, and the stator seat 207 is used to mount the stator 002. The pump housing seat 205 is located above the stator seat 207. After the pump housing assembly 001 on the pump housing seat 205 is heated by the heating device 10, the stator 002 on the lower stator seat 207 can move upward to approach the pump housing assembly 001 and finally be press-fitted into the pump housing assembly 001.

[0038] like Figure 4The pressing mechanism 20' in this embodiment includes a first mounting plate 204 and a second mounting plate 206. The pump housing seat 205 is mounted on the first mounting plate 204, and the stator seat 207 is mounted on the second mounting plate 206. The mounting method is either a fixed connection or a limiting connection, ensuring that the pump housing cannot detach downwards from the corresponding mounting plate. For example, it can be pressed onto the corresponding mounting plate. Figure 5 , 6 In this design, the first mounting plate 204 is provided with a first mounting hole 204a, and the second mounting plate 206 is provided with a second mounting hole 206a, for press-fitting the pump housing 205 and the stator seat 207, respectively. Of course, other mounting methods can also be used, such as welding, snap-fitting, or bolt fastening. The first mounting plate 204 is located above the second mounting plate 206, so that the pump housing 205 is located above the stator seat 207 after installation.

[0039] The pressing mechanism 20' also includes a first base plate 202 and a support rod 211, such as Figure 3 As shown, the first mounting plate 204 and the first base plate 202 are connected by support rods 211. Multiple support rods 211 can be provided for a stable connection; the number of support rods 211 is not limited. In this embodiment, both the first mounting plate 204 and the first base plate 202 are approximately rectangular plate structures. A support rod 211 is provided at each of the four corners of the first mounting plate 204 and the first base plate 202. The connection method between the support rods 211 and the first mounting plate 204 and the first base plate 202 can also be press-fitting, fastener connection, welding, etc. This embodiment does not impose any limitations. Thus, the first mounting plate 204 and the first base plate 202 form the frame of the press-fitting mechanism 20'. Considering the subsequent assembly process, it can be understood that the first base plate 202 can be omitted in this embodiment, but by providing the first base plate 202, support rods 211, and assembling the first mounting plate 204 into a frame, support can be provided for the guide rods 209 and other components described below, resulting in better overall structural stability.

[0040] In addition, such as Figure 3 , 4 As shown, the pressing mechanism 20' also includes a guide rod 209. The aforementioned second mounting plate 206 is located between the first mounting plate 204 and the first base plate 202 in the height direction. The guide rod 209 is also located between the first mounting plate 204 and the first base plate 202. One end of the guide rod 209 is connected to the first mounting plate 204, and the other end is connected to the first base plate 202. The connection method with the first mounting plate 204 and the first base plate 202 is either a fixed connection or a height-limiting connection. The connection method is also not limited. Figure 4The specific connection method is bolt fixing. At this time, the second mounting plate 206 is provided with a guide hole 206b, and the guide rod 209 slides in conjunction with the guide hole 206b. As will be understood from the working process described later, in this embodiment, the second mounting plate 206 can move up and down relative to the first mounting plate 204 to drive the stator 002 closer to the pump housing assembly 001 on the first mounting plate 204. Therefore, the guide rod 209 is provided so that the second mounting plate 206 can slide along the guide rod 209, thereby improving the stability of the up and down movement of the second mounting plate 206. In addition, in the initial state, the second mounting plate 206 is limited by the guide rod 209 and can be hooked onto the first base plate 202 without detaching from the pressing mechanism 20'. The number of guide rods 209 can be one or more, and the specific number is not limited. However, it is also possible to omit the guide rods 209.

[0041] Furthermore, the pressing mechanism 20' also includes a sliding sleeve 210, which is inserted into the guide hole 206b of the second mounting plate 206. The guide rod 209 directly slides against the inner wall of the sliding sleeve 210. The height of the sliding sleeve 210 can be greater than the thickness of the second mounting plate 206, which can increase the contact area with the guide rod 209 and improve the guiding stability. The sliding sleeve 210 can also be made of wear-resistant material to ensure the reliability of sliding and reduce wear.

[0042] Let's look again. Figure 3 , 5The pressing mechanism 20' also includes a top support plate 201 and a connecting rod 212. The connecting rod 212 connects the second mounting plate 206 and the top support plate 201. Two or more connecting rods 212 can be provided to make the connection between the connecting rod 212 and the second mounting plate 206 more reliable. The connection method between the connecting rod 212, the second mounting plate 206, and the top support plate 201 is a fixed connection or a limiting connection. The specific connection method can be pressing, snap-fitting, welding, or bolt fastening, etc. The main function of the connecting rod 212 is to provide a transmission connection between the second mounting plate 206 and the top support plate 201 in the height direction. At this time, the first base plate 202 is provided with a first through hole 202a, and the top support plate 201 can pass through the first through hole 202a. That is, the top support plate 201 can be located below the first base plate 202, or inside the first through hole 202a, or pass through the first through hole 202a of the first base plate 202 and be located above the first base plate 202. The top support plate 201 and the second mounting plate 206 are connected by a connecting rod 212. The top support plate 201 supports the upward thrust from the drive assembly 30, thereby driving the pressing mechanism 20' to move upward. It can be understood that the first base plate 202 does not necessarily have to be provided with a first through hole 202a for the top support plate 201 to pass through. As long as the stroke is sufficient, it is possible for the top support plate 201 not to pass through the first base plate 202. However, it is set to be able to pass through the first base plate 202, and the space above the first base plate 202 is also used as the stroke space of the top support plate 201, so that the pressing mechanism 20' occupies less space and the structure can be relatively compact.

[0043] Please continue to refer to this. Figure 3 The pressing mechanism 20' also includes a lifting rod 203. The top support plate 201 is provided with a second through hole 201a. One end of the lifting rod 203 can pass through the second through hole 201a, and the other end of the lifting rod 203 is limitedly connected to the stator seat 207. Figure 3 In the stator base 207, there is a stepped through hole, which includes a large-diameter hole and a small-diameter hole. The wall portion corresponding to the stepped hole will correspondingly include a stepped surface. The large-diameter hole is used to accommodate at least a portion of the stator 002. A portion of the lifting rod 203 is located in the small-diameter hole, and the upper end of the lifting rod 203 is located in the large-diameter hole. The upper end of the lifting rod 203 has an annular flange, which is supported on the stepped surface of the stator base 207. In this way, the lifting rod 203 and the stator base 207 are connected in a limiting manner. When the annular flange and the stepped surface abut, the lifting rod 203 will not disengage downward from the stator base 207, and the lifting rod 203 can move upward relative to the stator base 207. In addition, the press mold 20 is also equipped with a return spring 208. When the lifting rod 203 pushes the stator 002 upward and presses it into the pump housing assembly 001, under the reset action of the return spring 208, the lifting rod 203 can return to its position until its annular flange abuts against the stepped surface of the stator seat 207.

[0044] like Figure 4-6As shown, the pressing mechanism 20' in this embodiment also includes a sliding plate 213, which is located on the top support plate 201. Both the sliding plate 213 and the top support plate 201 can pass through the first through hole 202a of the first base plate 202. The sliding plate 213 and the connecting rod 212 are slidably connected. The sliding plate 213 can be provided with a through hole, through which the connecting rod 212 passes. The aforementioned lifting rod 203 is fixedly connected to or limited by the sliding plate 213, that is, it is limited by the axial direction of the lifting rod 203. In this way, when the sliding plate 213 slides up and down along the connecting rod 212, it will drive the lifting rod 203 to move. On the one hand, it guides the movement of the lifting rod 203. On the other hand, as the lifting rod 203 is lifted, the stator 002 is pushed out of the stator seat 207. A sliding sleeve 214 can be provided at the through hole of the sliding plate 213. The sliding sleeve 214 and the connecting rod 212 slide directly together, which helps to reduce sliding wear and ensure smooth sliding.

[0045] You can continue to refer to this. Figure 7-10 As shown, Figure 7 for Figure 1 A schematic diagram of the structure of the drive component 30; Figure 8 for Figure 7 A cross-sectional view of the drive assembly 30 along the height direction; Figure 9 for Figure 1 Assembly diagram of the drive assembly 30 and the pressing mechanism 20'; Figure 10 From Figure 9 A schematic diagram of the drive assembly 30 viewed from the bottom of the central frame 50.

[0046] In this embodiment, the drive assembly 30 includes a power unit 302 and a force transmission unit 305. The power unit 302 is located in... Figure 7 , 8 Specifically, this includes a servo press 3021, which is a press driven and controlled by a servo motor, offering advantages such as large thrust and stable, controllable stroke. The power unit 302 generates thrust to move the pressing mechanism 20'. As mentioned above, the pressing mechanism 20' is equipped with a pump housing seat 205. When the pressing mechanism 20' moves upward, the pump housing assembly 001 on the pump housing seat 205 can be moved towards the heating device 10 to heat the pump housing assembly 001. Therefore, the power unit 302 only needs to generate thrust. The power unit 302 is not limited to the servo press 3021; ​​it can also include general hydraulic cylinders, pneumatic cylinders, and thrust assemblies composed of motors and lead screws. In this embodiment, the force transmission part 305 of the drive assembly 30 includes a cylinder 3051, such as... Figure 8 As shown, cylinder 3051 includes cylinder barrel 30511 and cylinder rod 30512. The volume of pressurized gas in cylinder barrel 30511 is constant. As an example, Figure 8The cylinder rod 30512 is located at the uppermost end of the cylinder barrel 30511, which is filled with pressurized gas. At this point, the cylinder 3051 functions as a rigid structure. For example, the pressing mechanism 20' also includes a force transmission plate 307. The drive end 30211 of the servo press 3021 is connected to the force transmission plate 307. The cylinder barrel 30511 of the cylinder 3051 and the force transmission plate 307 are fixedly connected or connected at the upper limit in the height direction. Thus, when the drive end 30211 of the servo press 3021 extends upwards, the cylinder barrel 30511 and the cylinder rod 30512 of the cylinder 3051 also move upwards together. Of course, the force transmission plate 307 can be omitted, and the drive end 30211 can directly push the cylinder barrel 30511. The force transmission plate 307 is provided here to facilitate the drive end 30211 driving multiple cylinders 3051 simultaneously.

[0047] Let's look again. Figure 8 The drive assembly 30 includes a push plate 301 and a push rod 303. The cylinder rod 30512 of the cylinder 3051, which serves as the force transmission part 305, is connected to the push plate 301. The servo press 3021 drives the force transmission plate 307 to move upward, and the force transmission plate 307 drives the cylinder barrel 30511 to move upward. Since the cylinder rod 30512 and the cylinder barrel 30511 remain stationary under the action of internal air pressure, the cylinder rod 30512 and the cylinder barrel 30511 of the cylinder 3051 move upward synchronously. The cylinder rod 30512 can also push the push plate 301 to move upward. The push plate 301 is arranged opposite to the top support plate 201 of the pressing mechanism 20' in the vertical height direction, so the push plate 301 can push the top support plate 201 to move upward. Figure 9 As shown, the base frame 50 of the pump assembly equipment has a third through hole 50a. The push plate 301 of the drive assembly 30 located below the base frame 50 can pass upward through the third through hole 50a and abut against the top support plate 201 of the pressing mechanism 20'. (The last sentence appears to be incomplete and possibly refers to a different device.) Figure 4 When the top support plate 201 moves upward, it can drive the second mounting plate 206 to move towards the direction of the first mounting plate 204. After moving a certain distance, the stator seat 207 on the second mounting plate 206 can abut against the bottom of the first mounting plate 204, thereby driving the pump housing seat 205 to move towards the heating device 10. After moving to the position where the pump housing assembly 001 cooperates with the heating device 10 for heating, the servo press 3021 can temporarily stop driving so that the heating device 10 can heat the pump housing assembly 001.

[0048] It is understood that the movement is not limited to the stator seat 207 driving the first mounting plate 204 upward. For example, if the bottom of the first mounting plate 204 is provided with an abutment boss, the second mounting plate 206 can directly push against the abutment boss to drive the first mounting plate 204 upward. That is, the second mounting plate 206 can directly or indirectly push the first mounting plate 204. In fact, the top support plate 201 is not limited to pushing the second mounting plate 206 and then pushing the first mounting plate 204. For example, the connecting rod 212 is directly connected to the first mounting plate 204, but the second mounting plate 206 and the stator seat 207 are pushed first, and then the first mounting plate 201 and the pump housing seat 205 are pushed. This can save stroke, and both the stator seat 207 and the pump housing seat 205 can rise to the heating position. After heating is completed, the rising stroke of the stator seat 207 only needs to meet the pressing stroke, which can reduce the stroke requirement of the power unit 302.

[0049] Please continue to refer to this. Figure 11 and Figure 12 , Figure 11 for Figure 1 A schematic diagram of the structure of the heating device 10 mounted on the mounting bracket 40; Figure 12 for Figure 1 A schematic diagram of the structure of the heating device 10, the mounting bracket 40, and the pressing mechanism 20'.

[0050] The pump assembly equipment also includes a mounting frame 40, which includes a frame body 401 and a pressing part 402. The frame body 401 is also mounted on the base frame 50 and can be located above the base frame 50. The pressing part 402 is located on the top of the frame body 401. A heating device 10 is mounted on the frame body 401. The heating device 10 includes a heating element 102 and a driving component 101. The driving component 101 specifically includes a drive motor. The driving component 101 is used to drive the heating element 102 to move to a specific position above the pump housing seat 205. At the heating station, the heating element 102 can surround the pump housing assembly 001. The pressing mechanism 20' drives the pump housing assembly 001 to move upward and into the interior of the heating element 102. After the heating element 102 is energized, it can heat the inner pump housing assembly 001.

[0051] After the pump housing assembly 001 is heated, the pump assembly equipment continues to press-fit the heated pump housing assembly 001 and the stator 002. Specifically, as follows... Figure 1As shown, the top of the mounting bracket 40 is also provided with a pressing part 402. The pressing part 402 and the pump housing seat 205 are arranged opposite to each other. Specifically, the pressing part 402 is located above the pump housing seat 205 and also above the heating element 102. After the pump housing assembly 001 is heated, the drive assembly 30 can continue to drive the pressing mechanism 20' to move upward, and make the pump housing assembly 001 and the pressing part 402 abut against each other. The pump housing assembly 001 cannot move upward further. The structure of the pressing part 402 is not limited and can be set to a structure that matches the pump housing assembly 001 to better clamp the pump housing assembly 001 and facilitate stable pressing with the stator 002. Figure 4 It is understood that when the pump housing assembly 001 can no longer move upward, the pump housing base 205 and the first mounting plate 204 can no longer move upward, and the stator base 207, due to being blocked at the bottom of the first mounting plate 204, can no longer move upward. The second mounting plate 206 connected to the stator base 207, the connecting rod 212, the top support plate 201, and the first base plate 202 connected to the first mounting plate 204 will also no longer continue to move upward.

[0052] Afterwards, combined Figure 8 , 9 Understandably, if the top support plate 201 cannot move, the push plate 301 also cannot move. However, the drive end 30211 of the servo press 3021 will continue to lift upwards, carrying the force transmission plate 307. Since the cylinder rod 30512 is unable to move as it abuts against the bottom of the push plate 301, the piston end of the cylinder rod 30512 located inside the cylinder 30511 pushes the pressurized gas inside the cylinder 30511 downwards. The pressurized gas will experience a large downward thrust. The cylinder 3051 can be connected to a pressure reducing valve (not shown in the figure). The pressure reducing valve is set with a preset pressure value. When the pressurized gas inside the cylinder 30511 continues to be pressurized until the pressure exceeds the preset pressure value of the pressure reducing valve, the pressure reducing valve... When the pressure relief valve is opened, the pressurized gas inside cylinder 30511 can be released. At this time, cylinder 3051 is no longer a rigid structure, but an elastic structure with telescopic capability. It will not interfere with the continued pushing of the drive end 30211 of the servo press 3021. It can be understood that the state change of cylinder 3051 is not limited to being achieved through connection with the pressure relief valve. An electromagnetic switch valve can also be set in the circuit of cylinder 3051. A sensor can be set to detect whether the pump housing assembly 001 and the pressure-blocking part 402 are in contact. When they are in contact, the controller receives a signal from the sensor and can control the electromagnetic switch valve to open to release the pressurized gas inside cylinder 30511, so as to allow the drive end 30211 to continue pushing upward. In comparison, setting a pressure relief valve does not require a corresponding control system, and the structure is simpler and more reliable.

[0053] When the pressure reducing valve opens, the cylinder barrel 30511 and cylinder rod 30512 of cylinder 3051 can move relative to each other, corresponding to... Figure 8The cylinder 30511 moves upward with the force transmission plate 307, gradually approaching the push plate 301. Correspondingly, the push rod 303 of the drive assembly 30 passes through the fourth through hole 301a of the push plate 301 under the direct push of the drive end 30211 or the indirect push of the force transmission plate 307, and then contacts the lifting rod 203 of the pressing mechanism 20', thus combining... Figure 4 It is understood that push rod 303 can pass through the fourth through hole 301a and then continue through the second through hole 201a to contact the lifting rod 203. Alternatively, the lifting rod 203 can be initially positioned at or passing downwards through the second through hole 201a, and push rod 303 can contact the lifting rod 203 after passing through the fourth through hole 301a. Clearly, the fourth through hole 301a and the second through hole 201a form a clearance channel, allowing push rod 303 to contact the lifting rod 203 and continue pushing it upwards. It can be seen that the fourth through hole 301a is not necessary, as long as push plate 301 does not interfere with the continued lifting of push rod 303. However, the fourth through hole 301a serves to provide clearance and guidance for push rod 303.

[0054] like Figure 4 As shown, at least a portion of the stator 002 is located within the stator base 207 and supported at the upper end of the lifting rod 203. The upward movement of the lifting rod 203 is not interfered with by the stator base 207. The stator base 207 cannot move upward due to the restriction of the pressing part 402, but this does not affect the upward movement of the lifting rod 203. When the lifting rod 203 continues to move upward, it can push the stator 002 to continue to move upward. Since the pump housing assembly 001 is pressed and limited by the pressing part 402 on the mounting bracket 40, the stator 002 can be gradually pressed into the pump housing assembly 001 during the upward movement, thereby completing the assembly of the stator 002 and the pump housing assembly 001.

[0055] like Figure 8 As shown, the drive assembly 30 also includes a limiting ring 306, which is sleeved on the upper end of the cylinder rod 30512. The limiting ring 306 is fixedly connected to the push plate 301 or the cylinder rod 30512, or is connected to the upper limit in the height direction. After the cylinder barrel 30511 moves upward relative to the cylinder rod 30512 for a certain distance, it will abut against the limiting ring 306. That is, the limiting ring 306 can limit the distance of the push rod 303 extending out of the push plate 301 to avoid over-pressing.

[0056] Therefore, the drive assembly 30 in this embodiment includes a power unit 302 and a force transmission unit 305. The power unit 302 drives the pressing mechanism 20' to move through the force transmission unit 305, thereby moving the pump housing seat 205 toward the heating device 10 to heat the pump housing assembly 001 on the pump housing seat 205. After heating, the power unit 302 continues to push upward, and the force transmission unit 305 eliminates the transmission effect between the power unit 302 and the pressing mechanism 20'. The power unit 302 can then independently drive the stator 002 located on the stator seat 207 to move toward the pump housing assembly 001 on the pump housing seat 205 for pressing. In this way, the pump assembly equipment can complete the heating and pressing of the pump housing assembly 001 in one station, simplifying the assembly process, improving assembly efficiency, and eliminating the need for high-temperature transfer.

[0057] In the above embodiment, the force transmission part 305 includes a cylinder 3051. During the process of pushing the entire pressing mechanism 20' to move upward, the cylinder 3051 maintains the transmission of thrust. When the force transmission of the cylinder 3051 is not needed, the pressurized gas in the cylinder 3051 can be released. It can be seen that the force transmission part 305 is not limited to the cylinder 3051. For example, the force transmission part 305 can also include a spring. One end of the spring is connected to the push plate 301, and the other end of the spring can be connected to the force transmission plate 307. In the initial stage, the power part 302 drives the spring to press the top support plate 201 of the pressing mechanism 20' upward to drive the entire pressing mechanism 20' to move upward. When the top support plate 201 can no longer move upward due to the action of the pressing part 402, the push rod 303 continues to move upward and drives the force transmission plate 307 to compress the spring. In other words, theoretically, the force transmission unit 305 can lift the stator 002 independently without interfering with the continued pushing of the power unit 302. This can be achieved using a spring or the aforementioned cylinder 3051, or other structural forms. For example, it can also drive the force transmission unit 305 to change position, moving it away from its original position transmitting force to the push plate 301. In comparison, the cylinder 3051, as the force transmission unit 305, can provide reliable holding force during force transmission and lifting. This holding force only needs to be sufficient to lift the pressing mechanism 20' upwards. When a larger thrust is provided to push the push rod 303 to press the stator 002, the pressurized gas inside the cylinder 30511 is released. Throughout the process, the force transmission fluctuation of the cylinder 3051 is small, resulting in minimal impact on the force feedback of the power unit 302 during assembly.

[0058] In addition, in this embodiment, the cylinder 50311 is connected to the force transmission plate 307, and the cylinder rod 50312 is connected to the push plate 301. It can be seen that the cylinder 50311 and the cylinder rod 50312 are two parts that can move relative to each other. Therefore, they can also be arranged in reverse, that is, the cylinder 50311 is connected to the push plate 301, and the cylinder rod 50312 is connected to the force transmission plate 307.

[0059] Please continue to refer to this. Figure 1 and combined Figure 3 In this embodiment, the pressing mold 20 is pushed upward by the drive assembly 30. To further ensure the stability of the upward movement of the pressing mold 20, the pump assembly equipment also includes a turntable 60. The support rod 211 of the pressing mechanism 20' can be inserted into the positioning hole of the turntable 60. In this way, the support rod 211 also serves to guide the upward movement of the entire pressing mold 20. The turntable 60 is set on the base frame 50. The turntable 60 can cooperate with the drive component to drive the turntable 60 to rotate, so as to rotate the pressing mold 20 above the drive assembly 30. After pressing is completed, it can also be rotated to make the pressing mold 20 leave the pressing position, so as to reinstall a new set of pump housing assembly 001 and stator 002. Multiple mounting positions can be set on the turntable 60 to simultaneously install the pump housing assembly 001, stator 002 and pressing mold 20, as well as press the stator 002 and pump housing assembly 001.

[0060] Let's look again. Figure 10 The drive assembly 30 includes a second base plate 308 and a fixing rod 304, which can be one or more. One end of the fixing rod 304 is connected to the second base plate 308, and the other end is connected to the bottom of the base frame 50, allowing the drive assembly 30 to be mounted on the base frame 50. However, the mounting method of the drive assembly 30 and the base frame 50 is not limited to this. Additionally, the drive assembly 30 includes a guide post 309, which is fixedly or partially connected to the second base plate 308. The force transmission plate 307 and the guide post 309 are slidably engaged. One end of the guide post 309 can be connected to the push plate 301, and the guide post 309 guides the movement of the force transmission plate 307 relative to the push plate 301.

[0061] This application also provides a pump assembly method, based on the pump assembly equipment described in the above embodiments, including:

[0062] The power unit 302 of the drive assembly 30 drives the force transmission unit 305 to move, and the force transmission unit 305 drives the pump housing 205 and the pump housing assembly 001 on it to move toward the heating device 10. In this embodiment, the force transmission unit 305 initially drives the entire pressing mold 20 to move toward the heating device 10.

[0063] After being moved into place, the heating device 10 heats the pump housing assembly 001 installed in the pump housing seat 205;

[0064] After heating is complete, the power unit 302 drives the stator 002, which is installed in the stator base 207, to move toward the pump housing base 205 and gradually press it into the pump housing base 205.

[0065] The pump assembly method achieves the same effect as the pump assembly equipment described above, and will not be repeated here. In one specific embodiment, the pump assembly method includes the following steps:

[0066] S1. Install the pump housing assembly 001 on the pump housing seat 205 of the pump assembly equipment, and install the stator 002 on the stator seat 207 of the pump assembly equipment.

[0067] At this time, the pump assembly equipment is in the following state: Figure 13 As shown, Figure 13 This is a schematic diagram of the pump assembly equipment in the first position state in the embodiment of this application, which is also the initial state of the pump assembly equipment.

[0068] S2. The drive end 30211 of the servo press 3021 of the drive assembly 30 starts to push upward, specifically by pushing the force transmission plate 307. The force transmission plate 307 drives the cylinder 3051 to push the push plate 301 upward. The push plate 301 moves upward and pushes the top support plate 201 of the pressing mechanism 20'. The top support plate 201 pushes the second mounting plate 206 upward through the connecting rod 212. The second mounting plate 206 drives the stator seat 207 to move upward.

[0069] S3. After the stator seat 207 moves upward a certain distance, it comes into contact with the bottom of the first mounting plate 204, and then pushes the first mounting plate 204 upward. The first mounting plate 204 drives the pump housing seat 205 and the pump housing assembly 001 on it to move upward until they move to the inside of the heating element 102 of the heating device 10 for heating.

[0070] like Figure 14 As shown, Figure 14 This is a schematic diagram showing the pump assembly equipment in its second position according to an embodiment of this application. In this position, the upper part of the pump housing assembly 001 is heated by the heating element 102. In this embodiment, the heating element 102 heats the pump housing assembly 001 in two stages: first, the upper part of the pump housing assembly 001 is heated, and then the lower part is heated. That is, in… Figure 14 After the predetermined heating time is completed, the servo press 3021 continues to push upwards, pushing the pressing mechanism 20' and the pump housing assembly 001 to the designated position. Figure 15 The location shown Figure 15 This is a schematic diagram of the pump assembly equipment in the third position state in this embodiment of the application. At this time, the lower part of the pump housing assembly 001 is heated by the heating element 102, and the servo press 3021 is also temporarily stopped from driving. It can be seen that the heating element 102 can heat the pump housing assembly 001 in a whole-section heating, two-section heating, or more-section heating, which can be set according to the requirements.

[0071] S4. After heating is complete, the servo press 3021 continues to push until the pump housing assembly 001 presses against the upper pressing part 402, as shown. Figure 16 As shown, Figure 16This is a schematic diagram of the pump assembly equipment in the fourth position state in this embodiment of the application. As mentioned above, after the pump housing assembly 001 stops moving upward due to the pressure of the pressure part 402, the top support plate 201 and the second mounting plate 206 also cannot move upward. However, the lifting rod 203 in the pressing mechanism 20' can still move upward relative to the stator seat 207 under the push of the push rod 303 of the drive assembly 30, thereby pressing the stator 002 into the pump housing assembly 001. After cooling, the assembly of the stator 002 and the pump housing assembly 001 is completed.

[0072] In this embodiment, the pump housing assembly 001 may not include a pump cover. In this case, a pump cover is still provided. Before assembly, the stator 002 is installed on the stator seat 207, the pump housing assembly 001 is installed on the pump housing seat 205, and the pump cover is installed on the pressing part 402. The pressing part 402 can specifically be a claw used to grip the pressing part 402. At this time, in step S4, after heating is completed, the servo press 3021 continues to push until the pump housing assembly 001 and the pump cover gripped by the pressing part 402 above are pressed together, completing the assembly of the pump housing assembly 001 and the pump cover. Then, the lifting rod 203 continues to move upward under the push of the push rod 303 of the drive assembly 30, pressing the stator 002 into the pump housing of the pump housing assembly 001, completing the assembly of the stator 002 and the pump housing assembly 001.

[0073] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A pump assembly device, characterized in that, It includes a heating device, a pressing mold, and a drive assembly. The pressing mold includes a pressing mechanism and a pump housing seat and a stator seat mounted on the pressing mechanism. The pump housing seat is located above the stator seat. The drive assembly includes a power unit and a force transmission unit. The power unit can drive the pump housing to move through the force transmission unit, thereby moving the pump housing towards the heating device. The power unit can also drive the stator base to move towards the pump housing.

2. The pump assembly equipment according to claim 1, characterized in that, The force transmission unit includes a cylinder, the power unit includes a servo press, and the drive assembly also includes a push plate and a push rod. The cylinder includes a cylinder barrel and a cylinder rod. The drive end of the servo press is connected to the push rod. One of the cylinder barrel and the cylinder rod is connected to the push plate, and the other is directly or indirectly connected to the drive end. The push plate is used to directly or indirectly drive the pump housing seat to move toward the heating device. The push rod can drive the stator to move toward the pump housing seat.

3. The pump assembly equipment according to claim 1 or 2, characterized in that, The push plate is provided with a fourth through hole, and the push rod can pass through the fourth through hole to drive the stator seat to move toward the pump housing seat.

4. The pump assembly equipment according to claim 3, characterized in that, The drive assembly further includes a force transmission plate, the drive end is connected to the force transmission plate, one end of the push rod is connected to the force transmission plate, and the other end can pass through the fourth through hole; the cylinder rod or the cylinder barrel of the cylinder is connected to the force transmission plate.

5. The pump assembly equipment according to any one of claims 1-4, characterized in that, The pressing mechanism includes a first mounting plate and a second mounting plate. The pump housing seat is mounted on the first mounting plate, and the stator seat is mounted on the second mounting plate. The push plate can push the second mounting plate close to the first mounting plate and directly or indirectly abut against the first mounting plate to drive the pump housing seat to move toward the heating device.

6. The pump assembly equipment according to claim 5, characterized in that, The pressing mechanism further includes a top support plate and a connecting rod. The connecting rod connects the second mounting plate and the top support plate. The push plate pushes the top support plate to bring the second mounting plate closer to the first mounting plate. The second mounting plate causes the stator seat to abut against the first mounting plate.

7. The pump assembly equipment according to claim 6, characterized in that, The pressing mechanism further includes a guide rod and a base plate. The second mounting plate is located between the first mounting plate and the base plate. One end of the guide rod is connected to the base plate and the other end is connected to the first mounting plate. The second mounting plate is provided with a guide hole, and the guide rod and the guide hole are slidably engaged. The base plate is provided with a first through hole, through which the top support plate can pass to push the stator seat closer to and abut against the first mounting plate.

8. The pump assembly equipment according to claim 6, characterized in that, The pressing mechanism further includes a sliding plate and a lifting rod. The sliding plate and the connecting rod are slidably connected, and the lifting rod and the sliding plate are fixedly connected or limitedly connected. The top support plate is provided with a second through hole. The push rod or the lifting rod can pass through the second through hole and abut against each other. The push rod pushes the lifting rod to move relative to the stator seat so as to push the stator out of the stator seat.

9. The pump assembly equipment according to claim 8, characterized in that, The stator base has a stepped through hole, which includes a large-diameter hole and a small-diameter hole. The large-diameter hole is used to accommodate at least a portion of the stator. The upper end of the lifting rod has an annular flange, which is supported on the stepped surface corresponding to the stepped through hole. The lower end of the lifting rod can abut against the push rod.

10. The pump assembly equipment according to any one of claims 1-4, characterized in that, The pump assembly equipment also includes a mounting frame, the heating device is mounted on the mounting frame, the mounting frame is also provided with a pressing part arranged opposite to the pump housing seat, the pump housing assembly includes a pump housing, the pressing part is used to install a pump cover, and the pump housing on the pump housing seat can be press-fitted with the pump cover.

11. A pump assembly method, characterized in that, The pump assembly equipment according to any one of claims 1-12 includes: The power unit of the drive assembly drives the force transmission unit to move, and the force transmission unit drives the pump housing base and the pump housing assembly on it to move toward the heating device. After being moved into place, the heating device heats the pump housing assembly installed in the pump housing seat; After heating is complete, the power unit drives the stator installed in the stator seat to move toward the pump housing seat and gradually presses it into the pump housing seat.

12. A pump assembly method, characterized in that, The pump assembly equipment according to claim 11 includes: Install the pump cover to the pressure-resistant part, install the stator to the stator seat, and install the pump casing assembly to the pump casing seat; The power unit of the drive assembly drives the force transmission unit to move, and the force transmission unit drives the pump housing base and the pump housing assembly on it to move toward the heating device. After being moved into place, the heating device heats the pump housing assembly installed in the pump housing seat; After a predetermined heating time, the power unit drives the pump housing seat to approach the pump cover and presses it against the pump cover; The power unit drives the stator, which is installed in the stator seat, to move toward the pump housing seat and is gradually pressed into the pump housing assembly.

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