Inner and outer tooth assembling mechanism of rotor and oil pump production equipment

Abstract

The invention discloses a rotor internal and external tooth assembling mechanism and oil pump production equipment, the rotor internal and external tooth assembling mechanism comprises a workbench, the workbench is provided with an internal and external tooth press-fitting mechanism, the internal and external tooth press-fitting mechanism comprises a transfer part arranged on the surface of the workbench and a press-fitting part arranged on the transfer part; the transferring part comprises a sliding rail assembly arranged on the table top of the working table, and a rotor mold and an inner and outer tooth mold which are arranged on the sliding rail assembly in a sliding mode, and the press-fitting part comprises a supporting assembly and a press-fitting supporting platform which are arranged on the two sides of the middle of the sliding rail assembly in a crossing mode; the press-fitting supporting platform is provided with a grabbing, clamping and press-fitting assembly facing the sliding rail assembly, the grabbing, clamping and press-fitting assembly moves up and down along the supporting assembly, and the grabbing, clamping and press-fitting assembly is provided with an inner gear inner ring positioning part, an outer gear outer ring positioning part and an inner and outer tooth bottom face limiting part. By the adoption of the inner and outer tooth assembling mechanism, the assembling efficiency can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of automated production of oil pumps, and in particular to an internal and external tooth assembly mechanism of an oil pump rotor. Background Art

[0002] During the production and assembly process of the oil pump for new energy vehicles, it is necessary to install the internal gear and the external gear on the rotor shaft of the oil pump rotor. Among them, the internal gear of the oil pump is tightly matched with the rotor shaft, and the external gear is eccentrically meshed with the internal gear. However, in the existing production procedures, since the external gear and the internal gear are eccentrically meshed, the usual assembly steps are to first install the internal gear on the rotor shaft of the rotor, and then manually put the external gear on the internal gear to achieve eccentric meshing. This assembly method will result in low assembly efficiency and high labor costs. And this assembly method cannot ensure that the assembly posture of the external gear remains consistent. In this way, when the next process, that is, installing the pump head, is carried out, it is necessary to add the steps of detecting and adjusting the posture in the previous step of installing the pump head. This further leads to cumbersome production and assembly procedures, increased equipment manufacturing costs, and low production efficiency. Summary of the invention

[0003] The present invention aims to provide an internal and external gear assembly mechanism for an oil pump rotor with high installation accuracy and high efficiency.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an internal and external gear assembly mechanism of a rotor, characterized in that: it includes a workbench, on which an internal and external gear press-fitting mechanism is arranged, and the internal and external gear press-fitting mechanism includes a transfer part arranged on the workbench surface and a press-fitting part arranged above the transfer part; the transfer part includes a slide rail assembly arranged on the workbench surface and a rotor mold and an internal and external gear mold respectively slidably arranged on the slide rail assembly, the rotor mold and the internal and external gear mold are arranged in parallel up and down and the internal and external gear mold is located above the rotor mold; the press-fitting part includes a support assembly spanning both sides of the middle part of the slide rail assembly, a press-fitting support platform is arranged on the support assembly, and the press-fitting support platform is provided with a gripping clamp and a press-fitting assembly facing the slide rail assembly, and the press-fitting part is also provided with a press-fitting drive assembly, and the press-fitting drive assembly drives the gripping clamp and the press-fitting assembly to move up and down along the support assembly, and the gripping clamp and the press-fitting assembly are provided with an inner gear inner ring positioning portion, an outer gear outer ring positioning portion and an inner and outer gear height limiting portion. By adopting such a setting method, the internal gear and the external gear can be eccentrically meshed in advance, and then the internal and external teeth can be grasped by the clamping and pressing assembly of the internal and external gear pressing mechanism and then pressed onto the rotor shaft. In addition, the position accuracy of the internal and external teeth can be guaranteed by positioning the inner ring of the internal gear, the outer ring of the external gear, and the upper and lower end faces of the internal and external gear assembly. The internal gear and the external gear can be assembled on the rotor shaft at the same time through one process, thereby improving the installation efficiency.

[0005] Furthermore, the slide rail assembly includes a rotor slide rail assembly and an inner-outer-tooth slide rail assembly, the slide rail assembly includes a slide rail support plate fixedly connected to the workbench surface; the rotor slide rail assembly includes an inner double slide rail arranged on the slide rail support plate, a rotor slider arranged on the inner double slide rail, and the rotor mold arranged on the rotor slider, and also includes a rotor motor driving the rotor slider to slide along the inner double slide rail; the inner-outer-tooth slide rail assembly includes an outer double slide rail arranged on the slide rail support plate, an inner-outer-tooth slider arranged on the outer double slide rail, and the inner-outer-tooth mold arranged on the inner-outer-tooth slider, and also includes a cylinder driving the inner-outer-tooth slider to slide along the outer double slide rail.

[0006] In order to further improve the positioning accuracy and facilitate grasping, an internal and external gear mold base plate is provided on the internal and external gear slider, the internal and external gear mold is provided on the internal and external gear mold base plate, an external gear accommodating cavity is provided on the internal and external gear mold, and a transverse groove running across the external gear accommodating cavity is provided on the internal and external gear mold, the depth of the transverse groove is greater than the depth of the external gear accommodating cavity, and the width of the transverse groove is less than the outer diameter of the internal gear.

[0007] In order to further improve the pressing accuracy, a rotor mold bottom plate is provided on the rotor slider, the rotor mold is a concave block and is fixed on the rotor mold bottom plate, a rotor positioning hole is provided on the top surface of one side of the concave block, and inner and outer tooth positioning claws are provided on the mold bottom plate on the left and right sides of the concave block, the inner and outer tooth positioning claws include an inner and outer tooth left positioning claw and an inner and outer tooth right positioning claw with an arc-shaped inner side surface, and an inner and outer tooth positioning claw slideway is provided on the rotor mold bottom plate on one side of the rotor mold, the inner and outer tooth left positioning claw and the inner and outer tooth right positioning claw are respectively slidably arranged on the inner and outer tooth positioning claw slideway through an L-shaped slider, and the inner and outer tooth left positioning claw and the inner and outer tooth right positioning claw are driven by a cylinder to move toward or oppositely; infrared sensing devices for detecting the position of the rotor end face and the inner and outer tooth end face are also provided on both sides of the rotor mold.

[0008] Preferably, the support assembly includes four linear guide pillars arranged on both sides of the slide rail assembly, the press-fit support platform includes an upper fixed platform and a lower sliding platform, the upper fixed platform is fixedly installed on the top of the four linear guide pillars and an electric cylinder is installed on the top surface of the upper fixed platform, the lower sliding platform is fixedly connected to a sliding sleeve arranged on the outside of the four linear guide pillars, the lower sliding platform is connected to the piston of the electric cylinder, and the gripping and press-fitting assembly is arranged on the bottom surface of the lower sliding platform.

[0009] In order to further ensure the position accuracy of the internal and external gear components during the press-fitting process, the clamping and press-fitting assembly includes an external gear positioning column connected to the bottom surface of the lower sliding platform, the bottom surface of the external gear positioning column is provided with two external gear positioning petals opposite to each other on the left and right, and the inner side walls of the two external gear positioning petals are arc-shaped walls that match the outer ring of the external gear; the external gear positioning column is provided with a stepped inner hole along the axis, the inner diameter of the upper hole of the stepped inner hole is larger than the inner diameter of the lower hole, a spring is provided in the upper hole, and an internal gear positioning pin is provided in the lower hole, the head of the internal gear positioning pin is located in the upper hole and abuts against the spring, the tail of the internal gear positioning pin extends out of the stepped hole and the outer diameter of the pin column of the internal gear positioning pin is consistent with the inner diameter of the internal gear; the lower slide The bottom surface of the moving platform is located on one side of the external gear positioning column and is connected to a vertical connecting plate, a horizontal slide is arranged at the lower part of the vertical connecting plate, and an inner and outer tooth clamping jaw is slidably provided on the horizontal slide, and the inner and outer tooth clamping jaw comprises an inner and outer tooth left clamping jaw and an inner and outer tooth right clamping jaw, and the inner and outer tooth left clamping jaw and the inner and outer tooth right clamping jaw comprise cantilevers parallel to each other extending from the horizontal slide toward the internal and outer gear positioning column, and a downward L-shaped claw is arranged at the tail end of the cantilever, and the L-shaped claws of the inner and outer tooth left clamping jaw and the inner and outer tooth right clamping jaw are arranged opposite to each other and both face the axis of the internal gear positioning pin, and the claw parts of the L-shaped claws of the inner and outer tooth left clamping jaw and the inner and outer tooth right clamping jaw are at a distance from the bottom surface of the external gear positioning column that is consistent with the height of the inner and outer teeth, and the inner and outer tooth left clamping jaw and the inner and outer tooth right clamping jaw are driven by a cylinder to move toward or oppositely.

[0010] In order to further detect the height of the gear, it also includes an internal and external tooth height detection mechanism, which is arranged on the workbench and behind the internal and external tooth pressing mechanism. The internal and external tooth height detection mechanism includes a vertical fixed frame fixed on the workbench, and a height detection sensing device is arranged on the vertical fixed frame. The height detection sensing device is slidably arranged on the vertical fixed frame and driven by a cylinder to slide up and down. The height sensing device includes a plurality of vertically arranged sensing heads located in the same sensing plane; the lower part of the height detection device is provided with a slide rail and a rotor and an internal and external tooth assembly mold slidably arranged on the slide rail.

[0011] Preferably, it also includes an internal and external gear oil spraying mechanism, which is arranged on the workbench and located behind the internal and external gear height detection mechanism. The internal and external gear oil spraying mechanism includes an oil spraying gun arranged on the workbench, and the lower part of the oil spraying gun is a slide rail and a rotor and an internal and external gear assembly mold slidably arranged on the slide rail.

[0012] To further ensure product reliability, it also includes a defective product recovery mechanism, which includes a press-fitting unqualified recovery chamber and a gear height unqualified recovery chamber. The press-fitting unqualified recovery chamber is connected to the internal and external gear press-fitting workstation through a first recovery conveying line, and the gear height unqualified recovery chamber is connected to the internal and external gear height detection workstation through a second recovery conveying line.

[0013] An oil pump production device comprises the above-mentioned rotor internal and external gear assembly mechanism.

[0014] Beneficial effects:

[0015] 1. The internal and external gear assembly mechanism of the rotor of the present invention adopts a new assembly process, that is, the internal gear and the external gear are eccentrically meshed and assembled into an internal and external gear assembly before the materials are received, and then the grasping clamp and pressing assembly of the internal and external gear pressing mechanism of the present invention are used to grasp the assembled internal and external gears, and the grasping clamp and pressing assembly of the present invention can position the inner ring (inner diameter) of the internal gear, the outer ring (outer diameter) of the external gear, and the upper and lower end faces of the internal and external gear assembly of the assembled internal and external gear assembly, and then the internal and external gear assembly is assembled to the rotor shaft of the rotor assembly at the same time, thereby improving the installation accuracy and efficiency.

[0016] 2. The present invention can move the rotor assembly and the internal and external gear assembly to be in the same straight line with the central axis of the gripping and pressing assembly through the rotor slide rail assembly and the internal and external gear slide rail assembly. The internal and external gear slider is located above the rotor slider, so that the internal gear positioning pin can be accurately inserted into the central hole of the internal gear during grasping, and at the same time, it is ensured that the internal gear positioning pin is against the rotor shaft during press fitting, thereby ensuring that the internal gear can be accurately sleeved on the rotor shaft, further improving the installation accuracy.

[0017] 3. The invention provides a height detection mechanism to detect the height of the top surface of the external gear, making preparations for the subsequent pump casing installation. The external gear that does not meet the gear height requirement is recycled, thereby improving the reliability of the product.

[0018] 4. The present invention is provided with a defective product recovery mechanism, which recovers and processes defective products that are not properly pressed into place during the internal and external gear press-fitting process and defective products whose gear height does not meet the standard during the internal and external gear height detection process, thereby further improving the reliability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an isometric view of the internal and external gear assembly mechanism of the rotor in the embodiment;

[0020] Figure 2 A top view of the internal and external gear assembly mechanism of the rotor in the embodiment;

[0021] Figure 3 It is the axonometric view of the internal and external gear press-fitting mechanism;

[0022] Figure 4 It is an isometric view of the transfer part of the internal and external gear press-fitting mechanism;

[0023] Figure 5 It is a partial enlarged view of the internal and external gear slide rail assembly of the transfer part;

[0024] Figure 6 It is a partial enlarged view of the slide rail assembly of the transfer part;

[0025] Figure 7 It is a front view of the internal and external gear press-fitting mechanism;

[0026] Figure 8 for Figure 7 A cross-sectional view of

[0027] Fig. 9 A view of the gripping and pressing components of the internal and external gear pressing mechanism;

[0028] Fig.10 is a cross-sectional view of the gripper and press-fit assembly;

[0029] Fig.11 This is the axonometric view of the internal and external gear height detection mechanism. DETAILED DESCRIPTION

[0030] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings, but the present invention is not limited to these implementation modes, and any improvement or substitution based on the basic spirit of the present embodiment still falls within the scope of protection required by the claims of the present invention.

[0031] Example: Figure 1-11 As shown, this embodiment provides an internal and external teeth assembly mechanism of a rotor, which is mainly used to complete the process of installing the internal and external teeth assembly 500 of the oil pump onto the rotor shaft 601 of the rotor assembly 600. Among them, the internal and external teeth assembly mechanism of the rotor includes a workbench 100, and the workbench is provided with an internal and external teeth pressing mechanism 200. As another implementation method of this embodiment, an internal and external teeth height detection mechanism 300 and an internal and external teeth oil injection mechanism 400 can also be set on the workbench at the same time. The internal and external teeth height detection is used to perform height detection on the external gears of the assembled rotor and the internal and external teeth assembly, and defective products are found and recycled; the internal and external teeth oil injection mechanism is used to spray oil and lubricate the rotor and the internal and external teeth assembly that pass the height detection. As another implementation method of this embodiment, a pump head assembly process can also be set after the internal and external teeth oil injection mechanism on the workbench.

[0032] Specifically, a carrier transmission line 101 for product flow can be set on one side of the workbench surface, and a loading and transporting module 102 and a unloading and transporting module 103 perpendicular to the carrier transmission line are set on the workbench surface, and the loading and transporting module and the unloading and transporting module are arranged at both ends of the carrier transmission line. A transfer transport module 104 is also arranged between the loading and transporting module and the unloading and transporting module, a first horizontal working line 105 is arranged between the transfer transport module and the loading and transporting module, and a second horizontal working line 106 is arranged between the transfer transport module and the unloading and transporting module. The internal and external gear pressing mechanism is arranged at the first horizontal working line, and the internal and external gear height detection mechanism and the internal and external gear oil injection mechanism are arranged at the second horizontal working line. As another implementation method in this embodiment, a pump head assembly mechanism is also arranged on the second horizontal working line behind the internal and external gear oil injection mechanism.

[0033] Among them, the carrier flow line, the first transverse working line and the second transverse working line all include a lower slide rail arranged on the work table and a lower slider slid on the lower slide rail, and the lower slider is provided with a mold for carrying objects, including a rotor mold and an internal and external gear mold. For the second transverse working line, since the internal and external gears have been installed on the rotor, it is only necessary to set the rotor mold. At this time, the rotor mold can also be called a rotor and internal and external gear assembly mold. In addition, the loading and handling module, the unloading and handling module and the transfer and handling module all include a horizontal frame erected on the workbench, and the horizontal frame is provided with an upper slide and an upper slider, and the upper slider is provided with a gripper for grabbing the rotor assembly and the internal and external gear assembly. The gripper is driven by a cylinder / electric cylinder / oil cylinder / motor to move up and down and left and right along the horizontal frame to realize the grabbing and moving of the products on the carrier flow line, the first transverse working line and the second transverse working line. For the loading and handling module, two types of grippers need to be set for the internal and external gear assemblies and the rotor assemblies. For the transfer and handling module and the unloading and handling module, since the internal and external gear assemblies have been installed on the rotor, only one type of gripper for the rotor assembly is required. At this time, the rotor gripper can also be called the rotor and internal and external gear assembly gripper.

[0034] Regarding the internal and external gear press-fitting mechanism 200, it includes a transfer part 201 arranged on the workbench surface and a press-fitting part 202 arranged above the transfer part. Among them, the transfer part is the first horizontal working line, and the transfer part, i.e., the first horizontal working line, includes a slide rail assembly, and the slide rail assembly includes a rotor slide rail assembly and an internal and external gear slide rail assembly, and the rotor slide rail assembly is arranged parallel to the internal and external gear slide rail assembly up and down, and the internal and external gear slide rail assembly is located above the rotor slide rail assembly. Specifically, the slide rail assembly includes a slide rail support plate 203 fixedly connected to the workbench surface; the rotor slide rail assembly includes an inner double slide rail 204 arranged on the slide rail support plate, a rotor slider 205 arranged on the inner double slide rail, and a rotor mold 206 arranged on the rotor slider; the internal and external gear slide rail assembly includes an outer double slide rail 207 arranged on the slide rail support plate, an internal and external gear slider 208 arranged on the outer double slide rail, and an internal and external gear mold 209 arranged on the internal and external gear slider; wherein the internal and external gear slider is higher than the rotor slider. In this embodiment, the rotor slider and the inner and outer gear sliders are driven to slide by means of a motor / cylinder / electric cylinder / oil cylinder, etc., and can slide on the inner double slide rails and the outer double slide rails and stop at the loading point and the pressing point respectively. The rotor slider can also stop electrically at the unloading point.

[0035] Among them, an internal and external gear mold base plate 210 is provided on the internal and external gear slider, the internal and external gear mold 209 is provided on the internal and external gear mold base plate, an external gear accommodating cavity 211 is provided on the internal and external gear mold, and a transverse groove 212 is provided on the internal and external gear mold that crosses the external gear accommodating cavity, the depth of the transverse groove is greater than the depth of the external gear accommodating cavity, and the width of the transverse groove is less than the outer diameter of the internal gear. A rotor mold base plate 213 is provided on the rotor slider, the rotor mold 206 is a concave block and is fixed on the rotor mold base plate, a rotor positioning hole is provided on the top surface of one side of the concave block, and inner and outer tooth positioning claws are provided on the mold base plate on the left and right sides of the concave block, and the inner and outer tooth positioning claws include an inner and outer tooth left positioning claw 214a and an inner and outer tooth right positioning claw 214b whose inner side surfaces are arc-shaped, and an inner and outer tooth positioning claw slideway 215 is provided on the rotor mold base plate on one side of the rotor mold, and the inner and outer tooth left positioning claw and the inner and outer tooth right positioning claw are respectively slidably arranged on the inner and outer tooth positioning claw slideways through L-shaped sliders 216, and the inner and outer tooth left positioning claw and the inner and outer tooth right positioning claw are driven by cylinders to move toward or oppositely; infrared sensing devices A for detecting the position of the rotor and infrared sensing devices B for detecting the position of the inner and outer teeth are also provided on both sides of the rotor mold.

[0036] In addition, the press-fitting part 202 includes a support assembly spanning both sides of the middle of the double slide rail assembly, a press-fitting support platform is provided on the support assembly, the press-fitting support platform is provided with a gripper and a press-fitting assembly facing the slide rail assembly, and the press-fitting part is also provided with a press-fitting drive assembly, which drives the gripper and the press-fitting assembly to move up and down along the support assembly. In this embodiment, the support assembly includes four linear guide posts 217 provided on both sides of the middle of the slide rail assembly, that is, two linear guide posts are provided on one side and are arranged in a square shape. The press-fitting support platform includes an upper fixed platform 218 and a lower sliding platform 219, the upper fixed platform is fixedly installed on the top of the four linear guide posts, and an electric cylinder / air cylinder / oil cylinder is installed on the top surface of the upper fixed platform. In this embodiment, an electric cylinder is used. The lower sliding platform is fixedly connected to the sliding sleeve 221 provided on the outside of the four linear guide pillars, the lower sliding platform is connected to the piston 222 of the electric cylinder / air cylinder / oil cylinder or the output shaft of the motor, and the bottom surface of the lower sliding platform is provided with the gripping and pressing assembly 223. In this embodiment, the driving mechanism adopts the electric cylinder 220, and the air cylinder is used to drive the lower sliding platform to slide up and down.

[0037] In this embodiment, the clamping and pressing assembly includes an external gear positioning column 224 connected to the bottom surface of the lower sliding platform. The external gear positioning column has two opposite side walls that are flat and the other two opposite side walls that are arc-shaped columns. The bottom surface of the external gear positioning column is provided with two external gear positioning petals 225 that are opposite to each other on the left and right. The two external gear positioning petals are formed by extending downward along the two opposite arc-shaped side walls of the external gear positioning column. The inner side walls of the two external gear positioning petals are arc-shaped walls that match the outer ring of the external gear. In addition, the external gear positioning column is provided with a stepped inner hole 226 along the axis. The inner diameter of the upper hole of the stepped inner hole is greater than the inner diameter of the lower hole. A spring 227 is provided in the upper hole. An internal gear positioning pin 228 is provided in the lower hole. The head of the internal gear positioning pin is located in the upper hole and abuts against the spring. The tail of the internal gear positioning pin extends out of the stepped hole and the outer diameter of the pin column of the internal gear positioning pin is consistent with the inner diameter of the internal gear.

[0038] Moreover, the bottom surface of the lower sliding platform is located on one side of the external gear positioning column and is connected to a vertical connecting plate 229, a horizontal slideway 230 is arranged at the lower part of the vertical connecting plate, and an inner and outer tooth jaw is slidably arranged on the horizontal slideway, and the inner and outer tooth jaws include an inner and outer tooth left jaw 231a and an inner and outer tooth right jaw 231b, and the inner and outer tooth left jaw and the inner and outer tooth right jaw include cantilevers parallel to each other extending from the horizontal slideway toward the internal and outer gear positioning column, and a downward L-shaped claw is arranged at the tail end of the cantilever, and the L-shaped claws of the inner and outer tooth left jaw and the inner and outer tooth right jaw are arranged opposite to each other and both face the axis of the internal gear positioning pin, and the distance between the claws of the L-shaped claws of the inner and outer tooth left jaw and the inner and outer tooth right jaw and the bottom surface of the external gear positioning column is consistent with or slightly greater than the height of the inner and outer teeth, and the inner and outer tooth left jaw and the inner and outer tooth right jaw are driven by a cylinder to move toward or oppositely.

[0039] Moreover, in this embodiment, the rotor slide rail assembly is driven by a motor, and the rotor slider can slide along the inner double slide rail and stop at any position. The inner and outer gear slide rail assembly is driven by a cylinder, and a limit block 232 is set on both sides of the middle part of the outer double slide rail. The limit block is used to limit the inner and outer gear slider. The inner and outer gear slider stops at the loading work point and the middle work point under the drive of the cylinder. When the rotor slider and the inner and outer gear slider stop at the loading work point, the loading and handling module grabs and moves the rotor assembly and the inner and outer gear assembly on the carrier flow line, respectively, and places them on the rotor mold on the rotor slider and the inner and outer gear mold on the inner and outer gear slider. When the rotor slider and the inner and outer gear slider slide to the middle press-fitting work point, the rotor slider stops under the action of the motor, and the inner and outer gear slider stops due to the limit of the limit block, and the press-fitting work point is located in the middle and lower part of the grab and press-fitting assembly. It is necessary to ensure that when the rotor slider and the inner and outer gear slider slide to the press-fitting station, the axis of the inner gear positioning pin, the axis of the inner gear of the inner and outer gear assembly and the axis of the rotor shaft of the rotor assembly are in the same straight line. At this time, the electric cylinder on the upper fixed platform is started and the lower sliding platform is driven downward by its piston. During the downward movement, the inner gear positioning pin is inserted into the inner hole of the inner gear to realize the positioning of the inner ring of the inner gear. The two outer gear positioning petals of the outer gear positioning column position the outer ring of the outer gear. The inner and outer gear clamps include an inner and outer gear left clamp and an inner and outer gear right clamp driven by the cylinder to be inserted into the transverse groove of the inner and outer gear mold to support the inner and outer gear assembly. Then the cylinder on the upper fixed platform is started and the lower sliding platform is driven upward by the piston to realize the positioning and grabbing of the inner and outer gear assembly. In this embodiment, the positioning of the assembled inner and outer gear assembly is realized by the inner gear positioning pin and the outer gear positioning column, and the height positioning of the inner and outer gear assembly is realized by the inner and outer gear clamp and the bottom surface of the outer gear positioning column, and the inner and outer gear assembly is grabbed. After the positioning and clamping action of the internal and external gear assembly is completed, the internal and external gear slider slides down to the loading work station under the drive of the cylinder and waits for the next work. The rotor slider continues to stop at the middle working point and waits for the internal and external gears to be pressed. After the clamping and pressing assembly grabs the internal and external gear assembly, wait for the internal and external gear slider to slide away, the cylinder on the upper fixed platform is started, and the lower sliding platform moves down under the action of the piston. During the downward movement, the internal gear positioning pin abuts against the rotor shaft of the rotor assembly and retracts into the inner hole of the step and compresses the spring under the action of the continuous downward movement of the lower sliding platform, and the internal and external gear assembly continues to move down and is sleeved on the rotor shaft until the bottom surface of the internal and external gear assembly abuts against the end surface of the rotor assembly, and then the pressing action is stopped, and then the lower sliding platform is driven to move up. In this way, the pressing action of the internal and external gear assembly is completed, and it is pressed onto the rotor shaft of the rotor assembly.After completing the internal and external gear press-fitting action, the rotor slider continues to be driven by the motor to slide to the feeding work station, and then is transported to the second horizontal working line through the transfer transport module to continue the height detection action and the oil injection action.

[0040] As another implementation in this embodiment, the second transverse working line includes a second transverse slide rail, on which a slider, a rotor and an internal and external gear assembly mold are arranged. Since the internal and external gear assembly has been installed on the rotor, the slider and the internal and external gear assembly mold in this embodiment can directly adopt the rotor slider and rotor mold in the internal and external gear press-fitting step, and the intermediate transfer module grabs, moves and places the rotor and the internal and external gear assembly on the rotor mold on the second transverse slide rail. A height detection point is arranged on the second transverse slide rail, and the internal and external gear height detection mechanism is arranged at the height monitoring point. The internal and external gear height detection mechanism includes a vertical fixed frame 301 fixed on the workbench, and a height detection sensing device 302 is arranged on the vertical fixed frame. The height detection sensing device is slidably arranged on the vertical fixed frame and driven up and down by a cylinder. The height sensing device includes a plurality of vertically arranged sensing heads 303 located in the same sensing plane. An oil spraying point is also arranged on the second transverse slide rail and after the height detection point. The internal and external gear oil spraying mechanism is arranged on the workbench where the oil spraying point is located, and the internal and external gear oil spraying includes an oil spray gun arranged on the workbench. The sensor head of the height detection mechanism is a distance sensor, and 5 sensor heads are provided. When the height detection sensor device moves down and contacts the upper end surface of the outer gear, the height of the upper end surface of the outer gear can be detected by the distance detection of each sensor head. Both the sensor head and the oil spray gun are prior art, and are not described in detail in this embodiment.

[0041] As another implementation in this embodiment, a pump head mounting point is also provided on the second transverse slide rail, and the pump head mounting point is located after the oil injection point. A pump head mounting mechanism is provided at the pump head mounting point, and the pump head mounting mechanism adopts the same vertical fixing frame as the height detection mechanism, and a vertical pump head slide rail is provided on the vertical fixing frame, and a pump head slider is provided on the pump head slide rail, and a pump head gripper is provided on the pump body slider. The pump head slider can be driven by a cylinder to move up and down along the vertical fixing frame and install the pump head on the rotor and the internal and external gear assembly. Of course, the pump head mounting mechanism can also be set at other process positions. The pump head installation is a conventional means, and the specific structure is not repeated here.

[0042] As another implementation in this embodiment, it also includes a defective product recovery mechanism 700, which includes a press-fitting unqualified recovery chamber 701 and a gear height unqualified recovery chamber 702. The press-fitting unqualified recovery chamber is connected to the intermediate transfer module through a first recovery and conveying line 703. The unqualified products of press-fitting are captured and placed on the first recovery and conveying line through the intermediate transfer module and sent back to the press-fitting unqualified recovery chamber. The gear height unqualified recovery chamber is connected to the second transfer module through a second recovery and conveying line. The products with unqualified external gear height are captured and placed on the second recovery and conveying line through the intermediate transfer module and sent back to the gear height unqualified recovery chamber. In this embodiment, the first horizontal working line is located at the press-fitting station and is provided with an infrared position detection device for detecting the height position of the internal and external teeth after press-fitting. The rotor mold is also provided with a pressure feedback mechanism for feedback of the pressure of the internal and external teeth pressed onto the rotor. After the press-fitting is completed, it is necessary to detect whether the press-fitting position and the press-fitting pressure are qualified, and the unqualified products will be sent to the press-fitting unqualified recovery chamber. The pressure detection and infrared position detection are both existing technologies and are not described in detail in this embodiment.

[0043] The internal and external gear assembly mechanism of the rotor of this embodiment is different from the prior art in which the internal gear is first installed on the rotor shaft and then the external gear is eccentrically meshed and installed on the internal gear. This embodiment adopts a new assembly process, that is, the internal gear and the external gear are pre-assembled into an internal and external gear assembly by eccentric meshing before the incoming materials are received, and then the internal and external gear press-fitting mechanism of this embodiment is used to grab the assembled internal and external teeth, and the grabbing and pressing assembly of the internal and external gear press-fitting mechanism of this embodiment can position the inner ring (inner diameter) of the internal gear, the outer ring (outer diameter) of the external gear, and the upper and lower end faces of the internal and external gear assembly of the assembled internal and external gear assembly, and then the internal and external gear assembly is assembled on the rotor shaft of the rotor assembly at the same time, which improves the installation accuracy and efficiency. In addition, the press-fitting parameters are detected in real time in this embodiment, and defective products are immediately recycled once they are found.

[0044] In addition, since the internal and external gear components are installed on the rotor shaft of the rotor component at one time in this embodiment, the position of the external gear can be controlled at the same time, so that the next process, namely the process of installing the pump head, can proceed more smoothly.

[0045] This embodiment also provides an oil pump production device, including the internal and external gear assembly mechanism of the rotor described above.

[0046] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An internal and external gear assembly mechanism of a rotor, characterized in that: It comprises a workbench, on which an internal and external gear press-fitting mechanism is arranged, and the internal and external gear press-fitting mechanism comprises a transfer part arranged on the workbench surface and a press-fitting part arranged above the transfer part; The transfer part comprises a slide rail assembly arranged on the workbench table, and a rotor mold and an inner and outer gear mold respectively slidably arranged on the slide rail assembly, wherein the rotor mold and the inner and outer gear mold are arranged in parallel up and down, and the inner and outer gear mold is located above the rotor mold; The press-fitting part includes a support assembly spanning both sides of the middle part of the slide rail assembly, a press-fitting support platform is arranged on the support assembly, and the press-fitting support platform is provided with a grabbing clamp and a press-fitting assembly facing the slide rail assembly. The press-fitting part is also provided with a press-fitting drive assembly, and the press-fitting drive assembly drives the grabbing clamp and the press-fitting assembly to move up and down along the support assembly, and the grabbing clamp and the press-fitting assembly are provided with an inner gear inner ring positioning portion, an outer gear outer ring positioning portion and an inner and outer tooth height limiting portion.

2. The internal and external gear assembly mechanism of the rotor according to claim 1, characterized in that: The slide rail assembly includes a rotor slide rail assembly and an inner and outer gear slide rail assembly, and the slide rail assembly includes a slide rail support plate fixedly connected to the workbench surface; The rotor slide rail assembly comprises an inner double slide rail arranged on the slide rail support plate, a rotor slider arranged on the inner double slide rail, and the rotor mold arranged on the rotor slider, and also comprises a rotor motor driving the rotor slider to slide along the inner double slide rail; The internal and external tooth slide rail assembly includes an outer double slide rail arranged on the slide rail support plate, an internal and external tooth slider arranged on the outer double slide rail, and the internal and external tooth mold arranged on the internal and external tooth slider, and also includes a cylinder that drives the internal and external tooth slider to slide along the outer double slide rail.

3. The internal and external gear assembly mechanism of the rotor according to claim 2, characterized in that: An internal and external gear mold bottom plate is provided on the internal and external gear slider, the internal and external gear mold is provided on the internal and external gear mold bottom plate, an external gear accommodating cavity is provided on the internal and external gear mold, a transverse groove that crosses the external gear accommodating cavity is provided on the internal and external gear mold, the depth of the transverse groove is greater than the depth of the external gear accommodating cavity, and the width of the transverse groove is less than the outer diameter of the internal gear.

4. The internal and external gear assembly mechanism of the rotor according to claim 3, characterized in that: A rotor mold bottom plate is arranged on the rotor slider, the rotor mold is a concave block and is fixed on the rotor mold bottom plate, a rotor positioning hole is arranged on the top surface of one side of the concave block, and inner and outer tooth positioning claws are arranged on the mold bottom plate on the left and right sides of the concave block, the inner and outer tooth positioning claws include an inner and outer tooth left positioning claw and an inner and outer tooth right positioning claw whose inner side surfaces are arc-shaped, an inner and outer tooth positioning claw slideway is arranged on the rotor mold bottom plate on one side of the rotor mold, the inner and outer tooth left positioning claw and the inner and outer tooth right positioning claw are respectively slidably arranged on the inner and outer tooth positioning claw slideway through an L-shaped slider, and the inner and outer tooth left positioning claw and the inner and outer tooth right positioning claw are driven by a cylinder to move toward or oppositely; infrared sensing devices for detecting the position of the rotor end face and the inner and outer tooth end face are also arranged on both sides of the rotor mold.

5. The rotor internal and external gear assembly mechanism according to claim 4, characterized in that: The support assembly includes four linear guide pillars arranged on both sides of the slide rail assembly, and the press-fit support platform includes an upper fixed platform and a lower sliding platform. The upper fixed platform is fixedly installed on the top of the four linear guide pillars and an electric cylinder is installed on the top surface of the upper fixed platform. The lower sliding platform is fixedly connected to a sliding sleeve arranged on the outside of the four linear guide pillars, and the lower sliding platform is connected to the output shaft of the electric cylinder. The gripping clamp and press-fitting assembly are arranged on the bottom surface of the lower sliding platform.

6. The rotor internal and external gear assembly mechanism according to claim 5, characterized in that: The clamping and pressing assembly includes an external gear positioning column connected to the bottom surface of the lower sliding platform, the bottom surface of the external gear positioning column is provided with two external gear positioning petals opposite to each other on the left and right, and the inner side walls of the two external gear positioning petals are arc-shaped walls that match the outer ring of the external gear; the external gear positioning column is provided with a stepped inner hole along the axis, the inner diameter of the upper hole of the stepped inner hole is larger than the inner diameter of the lower hole, a spring is provided in the upper hole, and an internal gear positioning pin is provided in the lower hole, the head of the internal gear positioning pin is located in the upper hole and abuts against the spring, the tail of the internal gear positioning pin extends out of the stepped hole and the outer diameter of the pin column of the internal gear positioning pin is consistent with the inner diameter of the internal gear; the bottom surface of the lower sliding platform is located at the outer gear A vertical connecting plate is connected to one side of the positioning column, and a horizontal slide is arranged at the lower part of the vertical connecting plate, and an inner and outer tooth jaw is slidably provided on the horizontal slide, and the inner and outer tooth jaw comprises an inner and outer tooth left jaw and an inner and outer tooth right jaw, and the inner and outer tooth left jaw and the inner and outer tooth right jaw comprise cantilevers parallel to each other extending from the horizontal slide toward the inner and outer tooth positioning column, and a downward L-shaped claw is arranged at the tail end of the cantilever, and the L-shaped claws of the inner and outer tooth left jaw and the inner and outer tooth right jaw are arranged opposite to each other and both face the axis of the internal gear positioning pin, and the claw parts of the L-shaped claws of the inner and outer tooth left jaw and the inner and outer tooth right jaw are at a distance consistent with the height of the inner and outer tooth assembly from the bottom surface of the external gear positioning column, and the inner and outer tooth left jaw and the inner and outer tooth right jaw are driven by a cylinder to move toward or oppositely.

7. The internal and external gear assembly mechanism of a rotor according to claim 1, 2, 3, 4, 5 or 6, characterized in that: It also includes an internal and external tooth height detection mechanism, which is arranged on the workbench and behind the internal and external tooth pressing mechanism, and includes a vertical fixed frame fixed on the workbench, on which a height detection sensing device is arranged, and the height detection sensing device is slidably arranged on the vertical fixed frame and driven by a cylinder to slide up and down, and includes a plurality of vertically arranged sensing heads located in the same sensing plane; a slide rail and a rotor and an internal and external tooth assembly mold slidably arranged on the slide rail are arranged at the lower part of the height detection device.

8. The internal and external gear assembly mechanism of a rotor as claimed in claim 7, characterized in that: It also includes an internal and external gear oil spraying mechanism, which is arranged on the workbench and located behind the internal and external gear height detection mechanism. The internal and external gear oil spraying mechanism includes an oil spraying gun arranged on the workbench, and the lower part of the oil spraying gun is a slide rail and a rotor and an internal and external gear assembly mold slidably arranged on the slide rail.

9. The internal and external gear assembly mechanism of a rotor as claimed in claim 8, characterized in that: It also includes a defective product recovery mechanism, which includes a press-fitting unqualified recovery chamber and a gear height unqualified recovery chamber. The press-fitting unqualified recovery chamber is connected to the internal and external gear press-fitting workstation through a first recovery conveying line, and the gear height unqualified recovery chamber is connected to the internal and external gear height detection workstation through a second recovery conveying line.

10. An oil pump production equipment, characterized in that: An internal and external gear assembly mechanism for a rotor comprising any one of the above claims.

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